Battery device and electric equipment

Abstract

The utility model relates to the technical field of electric appliance devices, and discloses a battery device and electric equipment, the battery device comprises a box body, at least one battery monomer assembly and a sampling assembly, the battery monomer assembly is arranged in the box body, and the battery monomer assembly is provided with a plurality of sampling point positions; the sampling assembly is used for collecting state information of the battery monomer assembly and comprises a sampler and a flat cable structure, the flat cable structure comprises a plurality of core wires which are insulated from one another, one end of each core wire is connected with the sampler, and the other end of any core wire is connected with one sampling point; the plurality of core wires comprise at least one fixed-length core wire pair, one fixed-length core wire pair comprises two core wires, and the sum of the lengths of the two core wires of each fixed-length core wire pair is a preset length. The core wire strip can be cut into the equal-length core wire segments with the preset length in advance, the cutting length does not need to be corrected frequently, operation is convenient, cutting efficiency is high, and waste of the core wire is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electrical devices, and in particular to a battery device and electrical equipment. Background Art

[0002] This section merely provides background information related to the present application and is not necessarily prior art.

[0003] In a battery device, it is usually necessary to collect relevant parameters of the battery device (such as temperature, voltage, etc.) in order to manage the battery device. The battery device is usually provided with multiple sampling points. In some technologies, a wiring structure with multiple core wires can be used to connect multiple sampling points to simplify the layout of the sampling lines. Due to the large differences in the layout of the sampling points, the lengths of the core wires of the wiring structure are also different. In the process of processing the wiring structure, the core wires can only be cut in sections according to different size requirements. Not only is cutting inconvenient and the processing efficiency low, but a lot of cables are wasted when cutting. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical equipment to at least alleviate the problem of inconvenience in cutting the core wires of the cable arrangement structure.

[0005] The first aspect of the present application provides a battery device, which includes a box, at least one battery cell assembly and a sampling assembly, wherein the at least one battery cell assembly is arranged in the box, and the battery cell assembly has a plurality of sampling points; the sampling assembly is used to collect status information of the battery cell assembly, and includes a sampler and a wiring structure, wherein the wiring structure includes a plurality of core wires insulated from each other, one end of each of the plurality of core wires is connected to the sampler, and the other end of any one of the core wires is connected to one of the sampling points; the plurality of core wires include at least one fixed-length core wire pair, one fixed-length core wire pair includes two core wires, and the sum of the lengths of the two core wires of each fixed-length core wire pair is a preset length; the battery cell assembly includes a plurality of battery cells arranged in sequence along a first direction, a plurality of sampling points are arranged into at least one row of point rows, each row of the point rows includes a plurality of sampling points arranged at intervals along the first direction, and in the same row of the point rows connected by the wiring structure, the core wires connected to at least two of the sampling points constitute the fixed-length core wire pair, and the first direction is an arbitrary direction.

[0006] According to the battery device of the technical solution of the present application, the sum of the lengths of the two core wires of each fixed-length core wire pair of its wiring structure is a preset length. In this way, during the core wire cutting process, the entire core wire line can be cut into core wire segments of equal length with a preset length first, and then the core wire segments of equal length can be cut as needed to obtain core wires of required lengths. Since the entire core wire line can be pre-cut into core wire segments of equal length with a preset length, in this process, the cutting length is a fixed value, and there is no need to frequently correct the cutting length. The operation is convenient and the cutting efficiency is high. Moreover, since the lengths of the pre-cut core wire segments are the same, the number of cutting segments of the entire core wire line can be planned more accurately and conveniently, thereby reducing the waste of cables and reducing the production cost of the battery device. The core wires connecting the multiple sampling points in each row of points are set as fixed-length core wire pairs. In this way, two core wires with complementary distances can be used to form a fixed-length core wire pair according to the different positions of the sampling points. For example, the core wires connecting the sampling points that are farther away and the core wires connecting the sampling points that are closer can be used to form a fixed-length core wire pair, which is conducive to the rational use of the core wires and reduces the problem of cluttered wire bundles due to the excessive length of the core wires.

[0007] In addition, the battery device according to the present application may also have the following additional technical features:

[0008] In some embodiments of the present application, in all the core wires connected to the point position row in the same row: the number of sampling points is set to N, and N is a positive integer greater than or equal to 2; wherein N is set to an even number and all core wires are set to N / 2 fixed-length core wire pairs, or N is set to an odd number and all core wires are set to (N-1) / 2 fixed-length core wire pairs. The multiple core wires connected to the point position row in the same row are set to fixed-length core wire pairs as much as possible, so that during the cutting process of the core wires, core wire segments of equal length with preset lengths can be used, and then the core wire segments of equal lengths can be cut as needed to obtain core wires of required lengths. The operation is convenient and the cutting efficiency is high. Since the lengths of the pre-cut core wire segments are the same, the number of cutting segments of the entire core wire line can be planned more accurately and conveniently, thereby reducing the waste of cables and reducing the production cost of battery devices.

[0009] In some embodiments of the present application, the battery cell assembly has a first side and a second side that are oppositely arranged along the first direction, and the sampler is arranged on the first side; in the same row of the points connected by the wiring structure, along the direction from the first side to the second side, the lengths of the core wires connected to the plurality of sampling points are arranged to increase in sequence. The sampler is located on the first side, and along the direction from the first side to the second side, the farther the sampling point is from the first side, the farther it is from the sampler. The core wires are arranged to increase in sequence, which can reasonably utilize the length of the core wires and reduce the possibility of core wire clutter.

[0010] In some embodiments of the present application, at one end connected to the sampler, all the core wires of the cable arrangement structure are arranged along a second direction, and the first direction intersects the second direction. By arranging all the core wires of the cable arrangement structure along the second direction, the neatness of the core wires is improved, the disorder of multiple core wires is reduced, the possibility of mutual interference between the core wires is reduced, the connection between the cable arrangement structure and the sampler is facilitated, and each core wire is conveniently connected to the corresponding sampling point.

[0011] In some embodiments of the present application, along the second direction, the lengths of the multiple core wires connected to the same row of points are sequentially increased or decreased. By sequentially increasing or decreasing the lengths of the multiple core wires connected to the same row of points, the neatness of the core wires is improved, the disorder of the multiple core wires is reduced, the possibility of mutual interference between the core wires is reduced, the connection between the wiring structure and the sampler is facilitated, and the connection between each core wire and the corresponding sampling point is facilitated.

[0012] In some embodiments of the present application, the plurality of sampling points are arranged into at least two rows of point rows along the second direction, and one wiring structure is configured to connect two adjacent rows of point rows. The two rows of point rows are connected by one sampling point row, which has a simple structure and improves the integration of the battery device.

[0013] In some embodiments of the present application, along the second direction, the wiring structure is arranged between two corresponding adjacent rows of point positions. The wiring structure is arranged between two adjacent point positions, which can reduce the mutual interference of components and improve the space utilization. At the same time, the core wire group on one side of the wiring structure along the second direction can be connected to the point position row on the same side, and the core wire group on the other end of the wiring structure along the second direction can be connected to the point position row on the corresponding side, which has a simple structure and reduces the wiring complexity.

[0014] In some embodiments of the present application, along the second direction, all the core wires of the wiring structure are divided into a first core wire group and a second core wire group, one of the two adjacent rows of point rows is connected to the first core wire group, and the other row of the point rows is connected to the second core wire group; along the direction from the first core wire group away from the second core wire group to the direction close to the second core wire group, the lengths of all the core wires of the first core wire group increase sequentially, and along the direction from the second core wire group away from the first core wire group to the direction close to the first core wire group, the lengths of all the core wires of the second core wire group increase sequentially; or, along the direction from the first core wire group away from the second core wire group to the direction close to the second core wire group, the lengths of all the core wires of the first core wire group decrease sequentially, and along the direction from the second core wire group away from the first core wire group to the direction close to the first core wire group, the lengths of all the core wires of the second core wire group decrease sequentially. The lengths of multiple core wires in the core wire group of the wire arrangement structure are sequentially increased or decreased, which improves the neatness of the core wires, reduces the clutter of the multiple core wires, reduces the possibility of mutual interference between the core wires, facilitates the connection between the wire arrangement structure and the sampler, and facilitates the connection between each core wire and the corresponding sampling point.

[0015] In some embodiments of the present application, the cable arrangement structure further includes an integrally constructed conjoined layer, the conjoined layer includes a plurality of wrapping parts, the outer sides of all the core wires are at least partially covered with the wrapping parts, the conjoined layer is provided with a connecting section between two adjacent wrapping parts, the connecting section is provided with a separation guide part extending along the length direction of the core wire, the separation guide part is used to locate the separation position of the connecting section. By providing the separation guide part on the connecting section, when the cable arrangement structure needs to separate some core wires, the connecting section can be separated along the separation guide part between the core wire to be separated and the adjacent core wire, so that the corresponding core wire and the wrapping part wrapping the core wire are separated together, which improves the convenience of the cable arrangement separation operation, and under the guidance of the separation guide part, the accuracy of the separation position of the connecting section of the core wire can be improved, and the possibility of damage to the wrapping part due to the deviation of the separation position, thereby affecting the performance of the cable arrangement structure, can be reduced.

[0016] In some embodiments of the present application, the separation guide portion is configured as a groove extending along the length direction of the core wire.

[0017] A second aspect of the present application provides an electrical device, which includes the wiring structure provided in the present application or any embodiment of the present application, or the electrical device includes the battery device provided in the present application or any embodiment of the present application.

[0018] The electrical equipment of the present application has the same beneficial effects as the wiring structure proposed in the present application or any embodiment of the present application.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0022] Figure 2 A schematic diagram of the structure of a battery device proposed in some embodiments of the present application;

[0023] Figure 3 A schematic diagram of a battery cell according to some embodiments of the present application;

[0024] Figure 4 A schematic diagram of a perspective of connecting a sampling component and a confluence component according to some embodiments of the present application;

[0025] Figure 5 A structural schematic diagram of another perspective of the connection between the sampling component and the confluence component proposed in some embodiments of the present application;

[0026] Figure 6 for Figure 5 A magnified view of part A;

[0027] Figure 7 A simplified schematic diagram of the connection between the core wire and the point arrangement of the cable arrangement structure proposed in some embodiments of the present application;

[0028] Figure 8 A simplified schematic diagram of the connection between the core wire and the point arrangement of the cable arrangement structure proposed in some other embodiments of the present application;

[0029] Fig. 9 A structural diagram of a wiring structure from one perspective proposed in some embodiments of the present application;

[0030] Fig.10 for Fig. 9 A partial enlarged schematic diagram of .

[0031] The reference numerals in the specific implementation manner are as follows:

[0032] 1000, vehicle; 100, battery device; 200, controller; 300, motor;

[0033] 11. Battery cell assembly; 12. Busbar assembly; 1201. Busbar component; 1202. Support plate; 1203. Sampling point; 121. First point; 122. Second point; 123. Third point; 124. Fourth point; 125. Fifth point; 126. Sixth point; 127. Seventh point; 128. Eighth point; 129. Ninth point; 130. Tenth point; 1204. Point row; 1205. First point row; 1206. Second point row; 13. Box; 131. First box; 132. Second box; 20. Battery cell; 21. Shell; 211. Shell; 212. End cover; 213. Electrode terminal; 22. Electrode assembly; 221. Ear;

[0034] 30. Sampling assembly; 31. Sampler; 32. Cable arrangement structure; 321. Core wire; 3201. First section; 3202. Second section; 3211. First core wire; 3212. Second core wire; 3213. Third core wire; 3214. Fourth core wire; 3215. Fifth core wire; 3216. Sixth core wire; 3217. Seventh core wire; 3218. Eighth core wire; 3219. Ninth core wire; 3220. Tenth core wire; 322. Conjoined layer; 3221. Wrapping part; 3222. Connecting section; 3223. Guide section; 3224. First side section; 3225. Second side section; 3226. Separation guide; 3227. First surface; 3228. Second surface; 323. First core wire group; 324. Second core wire group;

[0035] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0042] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] Battery devices can not only be used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding. In order to facilitate the management of battery devices, it is usually necessary to collect relevant parameters of the battery devices, such as the voltage or temperature of multiple battery cells that make up the battery. The battery device is usually equipped with multiple sampling points. For example, sampling points can be set for multiple battery cells respectively, so as to understand the corresponding status information of each battery cell during use. Each sampling point needs to be connected to the sampler through a suitable connecting member to transmit the collected information.

[0045] In some technologies, the battery device can be equipped with a wiring structure, through which the sampler is connected to each sampling point to collect the corresponding status information of the battery cell during use. The wiring structure integrates multiple core wires, each of which can be set one by one corresponding to the sampling point and connected between the sampler and the corresponding sampling point. The wiring structure can reduce the clutter of the wiring harness and improve the assembly efficiency and convenience of the battery device.

[0046] Since the distances between the various sampling points of the battery device and the sampler are often different, the required lengths of the core wires are often different. If all the core wires of the wiring structure are processed according to the longest size, the production cost of the wiring structure will increase, and the core wires will become messy due to being too long. Therefore, the core wires of the wiring structure will be processed into unequal lengths. Studies have found that due to the different lengths of the core wires, the wiring structure needs to be cut and processed separately according to the core wires of various sizes during the processing process. Not only does it require multiple debugging and correction of the appropriate core wire size, the cutting process is time-consuming and labor-intensive, and the operation convenience is poor. Moreover, due to the different lengths of the core wires, it is difficult to make reasonable use of all the lengths of the core wires, and it is easy to have a lot of short core wire waste, resulting in a waste of core wire materials, which increases the production cost of the wiring structure, and thus increases the preparation cost of the battery device using the wiring structure.

[0047] In order to alleviate the problem of inconvenient cutting of the core wires of the wiring structure, waste of core wires, and resulting in high production costs, the present application provides a battery device, which includes a wiring structure. The multiple core wires of the wiring structure can be divided into fixed-length core wire pairs, the fixed-length core wire pairs include two core wires, and the sum of the lengths of the two core wires of any fixed-length core wire pair is a preset length.

[0048] That is to say, both core wires of each fixed-length core wire pair can be cut by a core wire segment of a preset length. In this way, during the core wire cutting process, the entire core wire line can be cut into core wire segments of equal length with a preset length first, and then the core wire segments of equal length can be cut as needed to obtain core wires of required lengths. For example, a core wire segment of a preset length can be cut into a longer core wire and a shorter core wire. The shorter core wire can be connected to a sampling point closer to the sampler, and the longer core wire can be connected to a sampling point farther from the sampler.

[0049] Since the entire core wire strip can be pre-cut into core wire segments of equal length with a preset length, in this process, the cutting length is a fixed value, and there is no need to frequently correct the cutting length. The operation is convenient and the cutting efficiency is high. Moreover, since the pre-cut core wire segments have the same length, the number of cutting segments of the entire core wire strip can be planned more accurately and conveniently, thereby reducing the waste of cables and reducing the production cost of the battery device.

[0050] The wiring structure proposed in this application or in the embodiments of this application can be used for connecting between mobile components and mainboards, between mainboards (e.g., PCB boards, i.e., printed circuit boards) and mainboards, and in miniaturized electrical appliances and other electrical devices. The wiring structure can be connected to the battery cells of the battery device to collect information such as the temperature and pressure of the battery cells. The wiring structure can also be applied to other locations of the battery device that require multi-line connections. Naturally, the wiring structure proposed in this application or in the embodiments of this application can also be applied to other electrical devices.

[0051] The battery device proposed in the present application or the embodiments of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft. The battery device can be used as a power source for electrical equipment, and the electrical equipment can be, but not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0052] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0053] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle provided in some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for the working power demand of the vehicle 1000 during startup, navigation and driving.

[0054] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000 , but also serve as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0055] like Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a battery device proposed in some embodiments of the present application. The battery device 100 mentioned in the embodiments of the present application may include one or more battery cell assemblies 11 for providing voltage and capacity. The battery cell assembly 11 may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel, or in mixed connection through a busbar component 1201.

[0056] In some embodiments, the battery cell assembly 11 is generally formed by arranging a plurality of battery cells 20 .

[0057] As an example, the battery cell assembly 11 may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0058] In some embodiments, the battery device 100 may be a battery pack, which includes a box 13 and one or more battery cell assemblies 11 . The battery cell assemblies 11 are accommodated in the box 13 .

[0059] As an example, the battery cell assembly 11 may be a battery module, and the battery cell assembly 11 may be accommodated in the box body 13 by fixing the battery module in the box body 13 .

[0060] As an example, the battery cell assembly 11 may also be accommodated in the case 13 by directly fixing the plurality of battery cells 20 to the case 13 .

[0061] As an example, the box 13 may include a first box 131 and a second box 132. The first box 131 and the second box 132 are buckled together to form a closed space inside the box 13 to accommodate the battery cell assembly 11. The closed space here means covering or closing, which can be sealed or unsealed. The first box 131 can be a top cover or a bottom plate.

[0062] As an example, the box body 13 may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body 13 to accommodate the battery cell assembly 11.

[0063] In some embodiments, the box 13 can be used as a part of the chassis structure of the vehicle. For example, part of the box 13 can become at least a part of the floor of the vehicle, or part of the box 13 can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0064] In the embodiment of the present application, the battery cell 20 may be a secondary battery. A secondary battery refers to a battery cell 20 that can be continuously used by activating active materials by charging after the battery cell 20 is discharged.

[0065] The battery cell 20 may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, or the like.

[0066] like Figure 3 As shown, Figure 3 This is a schematic diagram of a battery cell proposed in some embodiments of the present application. The battery cell 20 may include an electrode assembly 22 and a shell 21. The electrode assembly 22 is arranged in the shell 21, including a positive electrode, a negative electrode and a separator, and the separator is arranged between the negative electrode and the positive electrode; the electrode assembly 22 is provided with a pole ear 221, and the pole ear 221 can lead the current from the electrode assembly 22. The pole ear 221 includes a positive pole ear and a negative pole ear. At least one electrode terminal 213 is arranged on the shell 21, and the electrode terminal 213 is electrically connected to the pole ear 221. The electrode terminal 213 can be directly connected to the pole ear 221, and can also be indirectly connected to the pole ear 221 through a current collecting member. The shell 21 includes a shell 211 with an opening and an end cover 212 covering the opening. The electrode terminal 213 can be arranged on the end cover 212 or on the shell 211.

[0067] like Figure 2 , and combined with Figure 4 and Figure 5 As shown, Figure 4 A schematic diagram of a perspective of connecting a sampling component and a confluence component proposed in some embodiments of the present application, Figure 5A structural schematic diagram of another perspective of the connection between the sampling assembly and the busbar assembly proposed in some embodiments of the present application; the battery device 100 also includes a sampling assembly 30 and a battery management system, namely a BMS (Battery Management System), which can intelligently manage and maintain each battery cell 20, reduce the possibility of overcharging and overdischarging of the battery device 100, extend the service life of the battery device 100, monitor the status of the battery device 100, etc. The sampling assembly 30 includes a sampler 31 and a wiring structure 32, the sampler 31 is connected to the battery management system, namely the BMS (Battery Management System), the wiring structure 32 includes a core wire 321 and a conjoined layer 322 that wraps the core wire 321, and the conjoined layer 322 connects the core wire into one. One end of the core wire 321 is connected to the sampler 31, and the other end of the core wire 321 of the wiring structure 32 can be connected to the electrode terminal 213 of the battery cell 20 through the busbar component 1201, wherein the core wire 321 and the battery cell 20 can be set one-to-one. The sampling component 30 is used to collect parameter information such as temperature and / or voltage and / or current of the battery cell 20. The parameter information is transmitted in the sampling component 30 in the form of a signal, and the sampler 31 transmits the collected signal (ie, parameter information) to the battery management system.

[0068] Reference 2. Figure 4 and Figure 5 As shown, combined with Figure 6 As shown, Figure 6 for Figure 5 The enlarged view of part A of the embodiment shows that a battery device 100 is provided, comprising a casing 13, at least one battery cell assembly 11 and a sampling assembly 30, wherein the at least one battery cell assembly 11 is arranged in the casing 13, and the battery cell assembly 11 has a plurality of sampling points 1203; the sampling assembly 30 is used to collect status information of the battery cell assembly 11, and comprises a sampler 31 and a wiring structure 32, the wiring structure 32 comprises a plurality of core wires 321 insulated from each other, one end of the plurality of core wires 321 is connected to the sampler 31, and the other end of any core wire 321 is connected to one of the sampling points 1203; the plurality of core wires 321 comprises at least one fixed-length core wire pair, a fixed-length core wire pair comprises two core wires 321, and the sum of the lengths of the two core wires 321 of each fixed-length core wire pair is a preset length.

[0069] The battery cell assembly 11 may include one or more battery cells 20. The battery cell assembly 11 may also include a busbar assembly 12, which may include a plurality of busbar components 1201, which are configured as conductors, and the plurality of busbar components 1201 are respectively connected to the electrode terminals 213 of the battery cells 20 to achieve series or parallel connection of the battery cells 20. The electrode terminals 213 of the battery cells 20 generally include a positive terminal and a negative terminal, and the positive terminal and the negative terminal of the battery cells 20 are each connected to a busbar component 1201.

[0070] Exemplarily, two battery cells 20 arranged adjacently may be connected by a pair of busbars 1201, so that the two battery cells 20 are connected in series or in parallel. For example, in two battery cells 20 arranged adjacently, the positive terminals of the two battery cells 20 are connected through one busbar 1201, and the negative terminals of the two battery cells 20 are connected through another busbar 1201, so that the two battery cells 20 are arranged in parallel; for another example, in two battery cells 20 arranged adjacently, for the convenience of description, the two battery cells 20 are defined as a first battery cell 20 and a second battery cell 20, respectively, the negative terminal of the first battery cell 20 and the positive terminal of the second battery cell 20 are connected through one busbar 1201, and the negative terminal of the second battery cell 20 and the positive terminal of the first battery cell 20 are connected through another busbar 1201, so that the two battery cells 20 are arranged in series.

[0071] The multiple current collecting components 1201 are usually arranged relatively spaced apart to reduce the possibility of electrical interference. Figures 4 to 6 As shown, the busbar assembly 12 further includes a support plate 1202 , which is an insulating plate. The plurality of busbar components 1201 can be mounted on the support plate 1202 , and electrical isolation is achieved through the support plate 1202 .

[0072] The status information of the battery cell assembly 11 refers to the status information of each battery cell 20 during the use of the battery device 100 , and the status information may include at least one of the temperature, charge and discharge current, and charge and discharge voltage of the battery cell 20 .

[0073] The sampling point 1203 is generally a conductive part of the battery cell assembly 11, so as to establish a sampling loop through the sampling point 1203, thereby collecting the status information of the battery cell assembly 11. Exemplarily, the sampling point 1203 can be set on the electrode terminal 213, and the core wire 321 is directly electrically connected to the electrode terminal 213. Exemplarily, the sampling point 1203 can also be set on the busbar 1201, and the core wire 321 is electrically connected to the busbar 1201, so as to collect the parameter information of the battery cell 20 connected to the busbar 1201.

[0074] The specific positions and numbers of the sampling points 1203 can be arranged as required.

[0075] Exemplarily, a plurality of battery cells 20 may be respectively provided with corresponding sampling points 1203 .

[0076] Exemplarily, when two adjacent battery cells 20 are connected via a busbar 1201 , a sampling point 1203 may be set on the busbar 1201 of the two adjacent battery cells 20 , and the parameter information collected by the sampling point 1203 may be used as sampling information of the two battery cells 20 .

[0077] The wiring structure 32 and the sampler 31 can be connected by plugging or other means. The sampler 31 and the wiring structure 32 can be arranged in the box 13. For example, the sampler 31 can be arranged on one side of the battery cell assembly 11, and the wiring structure 32 can be arranged above the battery cell assembly 11.

[0078] For example, the wiring structure 32 can be arranged on the support plate 1202 and located on the side of the support plate 1202 away from the battery cell 20. A limiting structure is arranged on the support plate 1202, and the limiting structure is used for the wiring structure 32 to move relative to the support plate 1202. Specifically, the limiting structure can be a limiting protrusion, a limiting groove or a buckle.

[0079] It should be noted that in some other implementations, the sampler 31 can also be arranged outside the box 13, and the wiring structure 32 is located inside the box 13. One end of the wiring structure 32 extends out of the box 13 or is connected to the sampler 31 outside the box 13 through a wire or the like.

[0080] The core wire 321 is a wire used by the wiring structure 32 to electrically connect to the electrical components. It can be a conductor, specifically, a core of a conductive wire, a core of a communication wire, etc. The core wire 321 can be a wire with a circular cross section. In some other embodiments, the core wire 321 can also be a wire with a polygonal, irregular, elliptical, etc. cross section. The multiple core wires 321 of the wiring structure 32 can be relatively electrically isolated from each other. The exemplary core wires 321 and the core wires 321 can be insulated and isolated by a wrapping portion 3221, and the wrapping portion 3221 can be made of plastic, rubber, resin, etc.

[0081] The core wires 321 and the sampling points 1203 may be arranged in a one-to-one correspondence.

[0082] The fixed-length core wire pair refers to a pair of core wires 321, and the length of one core wire 321 of the pair of core wires 321 and the length of the other core wire 321 are the preset lengths. When the core wires 321 of the cable arrangement structure 32 are set to an even number, all the core wires 321 can form a fixed-length core wire pair one by one, and when the core wires 321 of the cable arrangement structure 32 are set to an odd number, all the core wires 321 can form a fixed-length core wire pair one by one, and the length of the remaining core wire 321 can be set as needed.

[0083] The preset length refers to a fixed length. The sum of the lengths of the two core wires 321 of each fixed-length core wire pair is the preset length, which can be understood as the sum of the lengths of the two core wires 321 of each fixed-length core wire pair being the same size, that is, the fixed length.

[0084] The preset length can be determined based on the arrangement relationship between the sampling points 1203 of the battery cell assembly 11 and the sampler 31. The preset length is greater than the required wiring length between the sampling point 1203 farthest from the sampler 31 and the sampler 31. For example, before processing the wiring structure 32, two suitable sampling points 1203 can be selected based on the preset positions of the sampling points 1203 of the battery device 100 and the preset positions of the sampler 31, and the planned wiring lengths required for the core wires 321 corresponding to the two sampling points 1203 are estimated to determine the preset length. For example, the wiring length required between the sampling point 1203 closest to the sampler 31 and the sampler 31 (first estimated wiring length) and the wiring length required between the sampling point 1203 closest to the sampler 31 and the sampler 31 (second estimated wiring length) can be estimated to determine the preset length. The preset length can be set to be equal to or greater than the sum of the first estimated wiring length and the second estimated wiring length.

[0085] It should be noted that in actual processing, in order to avoid the existence of processing errors, it should be understood that any reasonable deviation size range of the preset length can be considered as the preset length. For example, any range of plus or minus 20 mm of the preset length can be considered as the preset length.

[0086] In the battery device 100 of the present embodiment, during the cutting process, the core wire 321 of the wiring structure 32 can first be cut into core wire 321 segments of equal length with a preset length, and then the core wire 321 segments of equal length can be divided into core wires 321 of required lengths as needed. For example, the core wire 321 segment of the preset length can be cut into a longer core wire 321 and a shorter core wire 321. The shorter core wire 321 can be connected to a sampling point 1203 closer to the sampler 31, and the longer core wire 321 can be connected to a sampling point 1203 farther from the sampler 31.

[0087] Since the entire core wire 321 can be pre-cut into core wire segments 321 of equal length with a preset length, in this process, the cutting length is a fixed value and there is no need to frequently calibrate the cutting length. The operation is convenient and the cutting efficiency is high. Moreover, since the pre-cut core wire 321 segments have the same length, the number of cutting segments of the entire core wire 321 can be planned more accurately and conveniently, thereby reducing cable waste and reducing the production cost of the battery device 100.

[0088] According to some embodiments of the present application, optionally, reference Figure 2 , Figures 4 to 6 As shown, the battery cell assembly 11 includes a plurality of battery cells 20 arranged in sequence along a first direction X, a plurality of sampling points 1203 are arranged into at least one row of point positions 1204, each row of point positions 1204 includes a plurality of sampling points 1203 arranged at intervals along the first direction X, in the same row of point positions 1204 connected by the wiring structure 32, at least two core wires 321 connected to the sampling points 1203 constitute a fixed-length core wire pair, and the first direction X is an arbitrary direction.

[0089] When the dot array 1204 is provided in multiple rows, the multiple dot arrays 1204 may be sequentially arranged along the second direction Y, where the second direction Y intersects with the first direction X.

[0090] Exemplarily, in a square-shell battery device 100, the box body 13 is roughly rectangular, the battery cell assembly 11 includes a plurality of battery cells 20 arranged along the length direction of the box body 13, the point rows 1204 are arranged as a plurality of rows arranged along the width direction of the box body 13, each row of the point rows 1204 includes a plurality of sampling points 1203 arranged along the length direction of the box body 13, the length direction of the box body 13 is used as the first direction X, and the width direction of the box body 13 is used as the second direction Y.

[0091] Exemplarily, the setting positions of the multiple sampling points 1203 in each row of point rows 1204 can be arranged in a mirror-symmetrical manner. For example, they can be arranged in a mirror-symmetrical manner with respect to the center line of the battery cell assembly 11 in the first direction X (the center line passes through the center of the battery cell assembly 11 along the first direction X and extends along the second direction Y).

[0092] The core wires 321 connecting the multiple sampling points 1203 in each row of point positions 1204 are set as fixed-length core wire pairs. In this way, two core wires with complementary distances can form a fixed-length core wire pair according to the different positions of the sampling points 1203. For example, the core wires 321 connected to the sampling points 1203 that are farther away can be combined with the core wires connected to the sampling points 1203 that are closer to form a fixed-length core wire pair, which is conducive to the rational use of the core wires 321 and also reduces the problem of a messy wire bundle caused by the excessive length of the core wires 321.

[0093] According to some embodiments of the present application, optionally, in the same row of point position row 1204 and all core wires 321 connected to the point position row 1204: the number of sampling points 1203 is set to N, N is a positive integer greater than or equal to 2; wherein, N is set to an even number and all core wires 321 are set to N / 2 fixed-length core wire pairs, or, N is set to an odd number and all core wires 321 are set to (N-1) / 2 fixed-length core wire pairs.

[0094] For example, Figure 7 and Figure 8 As shown, Figure 7 This is a simplified schematic diagram of the connection between the core wire and the point arrangement of the cable arrangement structure proposed in some embodiments of the present application. Figure 8 This is a simplified schematic diagram of the connection between the core wire of the wiring structure and the point row proposed in some other embodiments of the present application. The same point row 1204 has N sampling points 1203, where N is an even number (in Figure 7 and Figure 8 In the example, N is specifically 10), each sampling point 1203 of the point row 1204 is connected to N core wires 321 in a one-to-one correspondence, and any one of the N core wires 321 is in a one-to-one correspondence with another core wire 321, forming N / 2 fixed-length core wire pairs (in Figure 7 and Figure 8 In the figure, the core wires 321 corresponding to each row of point positions 1204 form 5 pairs of fixed-length core wire pairs).

[0095] It should be noted that Figure 7 and Figure 8 The wiring structure 32 only shows the arrangement of the core wire 321, and omits the conjoined layer 322. Figure 7 and Figure 8 The dotted line B in FIG. 3 represents the boundary between the first core wire group 323 and the second core wire group 324 , that is, one side of the dotted line B is the first core wire group 323 , and the other side of the dotted line B is the second core wire group 324 .

[0096] Exemplarily, the same row of point positions 1204 has N sampling point positions 1203, N is an odd number, and each sampling point position 1203 of the point position row 1204 is connected to N core wires 321 in a one-to-one correspondence. Any one of the N core wires 321 has another core wire 321 in a one-to-one correspondence, forming (N-1) / 2 fixed-length core wire pairs. One of the N core wires 321 is independently set and is not formed into a fixed-length core wire pair. The length of the independently set core wire 321 can be set as needed. In some embodiments, the independently set core wire 321 can form a fixed-length core wire pair with the independently set core wires 321 of other wiring structures 32 to improve the utilization rate of the core wires 321.

[0097] The multiple core wires 321 connected to the same row of point positions 1204 are set as fixed-length core wire pairs as much as possible, so that during the cutting process of the core wires 321, equal-length segments of the core wires 321 with preset lengths can be used, and then the equal-length segments of the core wires 321 are cut as needed to obtain the core wires 321 of the required length. The operation is convenient and the cutting efficiency is high. Moreover, since the pre-cut core wires 321 segments have the same length, the number of cutting segments of the entire core wire 321 can be planned more accurately and conveniently, thereby reducing the waste of cables and reducing the production cost of the battery device 100.

[0098] According to some embodiments of the present application, optionally, Figures 4 to 8 As shown, the battery cell assembly 11 has a first side and a second side that are oppositely arranged along the first direction X, and the sampler 31 is arranged on the first side; in the same row of point positions 1204 connected by the wiring structure 32, the lengths of the core wires 321 connected to the multiple sampling point positions 1203 are arranged to increase in sequence along the direction from the first side to the second side.

[0099] The first side is one of the two opposite sides of the battery cell assembly 11 along the first direction X. The direction from the first side to the second side can be understood as a direction from the sampler 31 to away from the sampler 31 .

[0100] Along the direction from the first side to the second side, the lengths of the core lines 321 connected to the plurality of sampling points 1203 are sequentially increased. It can be understood that, along the first direction X, in the same row of points 1204, the length of the core line 321 connected to the sampling points 1203 close to the first side of two adjacent sampling points 1203 is less than the length of the core line 321 connected to the sampling points 1203 close to the second side.

[0101] like Figure 7 and Figure 8As shown, in the same row of points 1204 connected by the wiring structure 32, along the direction from the first side to the second side, the lengths of the core lines 321 connected to the plurality of sampling points 1203 are sequentially increased, so that two sampling points 1203 that are mirror-symmetrical along the first direction X can constitute a pair of sampling points 1203. Specifically, the sampling point 1203 closest to the sampler 31 is the first point 121, and the core line 321 connected to the first point 121 is the first core line 3211. Along the direction away from the sampler 31, the sampling points 1203 after the first point 121 are the second point 122, the third point 123, the fourth point 124, the fifth point 125, the sixth point 126, the seventh point 127, the eighth point 128, the ninth point 129 and the tenth point 130, the core line 321 connected to the second point 122 is the second core line 3212, the third point 123 is the fourth point 124, the fifth point 125, the sixth point 126, the seventh point 127, the eighth point 128, the ninth point 129 and the tenth point 130, the core line 321 connected to the second point 122 is the second core line 3212, the third point 124 is the fifth point 125, the sixth point 126, the seventh point 127, the eighth point 128, the ninth point 129 and the tenth point 130, The core line 321 connected at point 123 is the third core line 3213, the core line 321 connected at point 124 is the fourth core line 3214, the core line 321 connected at point 125 is the fifth core line 3215, the core line 321 connected at point 126 is the sixth core line 3216, the core line 321 connected at point 127 is the seventh core line 3217, the core line 321 connected at point 128 is the eighth core line 3218, the core line 321 connected at point 129 is the ninth core line 3219, and the core line 321 connected at point 130 is the tenth core line 3220. Among them, the tenth point 130 is farthest from the sampler 31, the distance between the tenth point 130 and the first point 121 is complementary, the tenth core wire 3220 and the first core wire 3211 constitute a fixed-length core wire pair, the ninth point 129 and the second point 122 are complementary, the ninth core wire 3219 and the second core wire 3212 also constitute a fixed-length core wire pair, similarly, the eighth core wire 3218 corresponding to the eighth point 128 and the third core wire 3213 corresponding to the third point 123 constitute a fixed-length core wire pair, the seventh core wire 3217 corresponding to the seventh point 127 and the fourth core wire 3214 corresponding to the fourth point 124 constitute a fixed-length core wire pair, the sixth core wire 3216 corresponding to the sixth point 126 and the fifth core wire 3215 corresponding to the fifth point 125 constitute a fixed-length core wire pair.

[0102] The sampler 31 is located on the first side, and points in the direction from the first side to the second side. The farther the sampling point 1203 is from the first side, the farther it is from the sampler 31. The core wire 321 is set to increase in sequence, which can reasonably utilize the length of the core wire 321 and reduce the possibility of the core wire 321 being messy.

[0103] According to some embodiments of the present application, optionally, Figures 4 to 8 As shown, at one end connected to the sampler 31 , all the core wires 321 of the wiring structure 32 are arranged along the second direction Y, and the first direction X intersects with the second direction Y.

[0104] Optionally, the second direction Y may be perpendicular or substantially perpendicular to the first direction X.

[0105] For example, Figures 4 to 8 As shown, each core wire 321 includes a first section 3201 extending along a first direction X and a second section 3202 bent relative to the first direction X toward a sampling point 1203. One end of the first section 3201 of all core wires 321 can be aligned and arranged, and used to connect with the sampler 31. The other end of the first section 3201 of all core wires 321 is respectively connected to the second section 3202, and the second section 3202 is used to connect with the corresponding sampling point 1203. The first section 3201 of each core wire 321 can extend in a straight line substantially along the first direction X, and the first sections 3201 of all core wires 321 can be arranged sequentially along the second direction Y.

[0106] By arranging all the core wires 321 of the wiring structure 32 along the second direction Y, the neatness of the core wires 321 is improved, the clutter of the multiple core wires 321 is reduced, and the possibility of mutual interference between the core wires 321 is reduced, which facilitates the connection between the wiring structure 32 and the sampler 31 and facilitates the connection between each core wire 321 and the corresponding sampling point 1203.

[0107] According to some embodiments of the present application, optionally, Figures 7 and 8 As shown, along the second direction Y, the lengths of the plurality of core wires 321 connected to the same row of point positions 1204 increase or decrease sequentially.

[0108] For example, in some implementations, referring to Figure 7 As shown, the wiring structure 32 is configured as two groups of point rows 1204, namely a first point row 1205 and a second point row 1206, all core wires 321 connected to the first point row 1205 are the first core wire group 323, all core wires 321 connected to the second point row 1206 are the second core wire group 324, the first core wire group 323 and the second core wire group 324 respectively include 10 core wires 321, wherein, along the direction from the first core wire group 323 to the second core wire group 324 (the second direction Y has two opposite directions, the direction from the first core wire group 323 to the second core wire group 324 is one of the directions of the second direction Y, and the direction from the second core wire group 324 to the first core wire group 323 is the other direction of the second direction Y), the lengths of the multiple core wires 321 of the first core wire group 323 increase sequentially; along the direction from the second core wire group 324 to the first core wire group 323, the lengths of the multiple core wires 321 of the second core wire group 324 increase sequentially.

[0109] For example, in some other implementations, refer to Figure 8As shown, the wiring structure 32 is configured as two groups of point rows 1204, namely a first point row 1205 and a second point row 1206, all core wires 321 connected to the first point row 1205 are the first core wire group 323, all core wires 321 connected to the second point row 1206 are the second core wire group 324, the first core wire group 323 and the second core wire group 324 respectively include 10 core wires 321, wherein, along the direction from the first core wire group 323 to the second core wire group 324 (the second direction Y has two opposite directions, the direction from the first core wire group 323 to the second core wire group 324 is one of the directions of the second direction Y, and the direction from the second core wire group 324 to the first core wire group 323 is the other direction of the second direction Y), the lengths of the multiple core wires 321 of the first core wire group 323 decrease sequentially; along the direction from the second core wire group 324 to the first core wire group 323, the lengths of the multiple core wires 321 of the second core wire group 324 decrease sequentially.

[0110] By sequentially increasing or decreasing the lengths of the multiple core wires 321 connected to the same row of points 1204, the neatness of the core wires 321 is improved, the clutter of the multiple core wires 321 is reduced, and the possibility of mutual interference between the core wires 321 is reduced, which facilitates the connection between the wiring structure 32 and the sampler 31 and facilitates the connection between each core wire 321 and the corresponding sampling point 1203.

[0111] like Figures 4 to 8 As shown, according to some embodiments of the present application, optionally, a plurality of sampling points 1203 are arranged into at least two rows of point rows 1204 along the second direction Y, and a wiring structure 32 is configured to connect two adjacent rows of point rows 1204 .

[0112] That is to say, one wiring structure 32 can connect two adjacent rows of point arrays 1204 .

[0113] The two rows of point positions 1204 are connected by a sampling point number row, which has a simple structure and improves the integration of the battery device 100.

[0114] According to some embodiments of the present application, optionally, along the second direction Y, the wiring structure 32 is disposed between two corresponding adjacent rows of point positions 1204 .

[0115] Exemplarily, the wiring structure 32 may be disposed in the middle of two adjacent rows of point arrays 1204 along the second direction Y.

[0116] The arrangement of the wiring structure 32 between two adjacent point rows 1204 can reduce the mutual interference of components and improve the space utilization. At the same time, the core wire group of the wiring structure 32 on one side along the second direction Y can be connected to the point row 1204 on the same side, and the core wire group of the wiring structure 32 on the other end along the second direction Y can be connected to the point row 1204 on the corresponding side, which has a simple structure and reduces the complexity of wiring.

[0117] According to some embodiments of the present application, optionally, along the second direction Y, all the core wires 321 of the wiring structure 32 are divided into a first core wire group 323 and a second core wire group 324, one of the two adjacent rows of point positions 1204 is connected to the first core wire group 323, and the other row of point positions 1204 is connected to the second core wire group 324; along the direction from the first core wire group 323 away from the second core wire group 324 to the direction close to the second core wire group 324, the lengths of all the core wires 321 of the first core wire group 323 increase sequentially, and along the second core wire group 324, the lengths of all the core wires 321 of the first core wire group 323 increase sequentially, and along the second core wire group 324, the lengths of all the core wires 321 of the first core wire group 321 ... The lengths of all the core wires 321 of the second core wire group 324 increase sequentially from the direction away from the first core wire group 323 to the direction close to the first core wire group 323; or, the lengths of all the core wires 321 of the first core wire group 323 decrease sequentially from the direction away from the second core wire group 324 to the direction close to the second core wire group 324, and the lengths of all the core wires 321 of the second core wire group 324 decrease sequentially from the direction away from the first core wire group 323 to the direction close to the first core wire group 323.

[0118] The first core wire group 323 and the second core wire group 324 can be arranged substantially along the second direction Y in a mirror-symmetrical manner.

[0119] For example, in some implementations, referring to Figure 7 As shown, the wiring structure 32 is configured as two groups of point rows 1204, namely a first point row 1205 and a second point row 1206, all core wires 321 connected to the first point row 1205 are the first core wire group 323, all core wires 321 connected to the second point row 1206 are the second core wire group 324, the first core wire group 323 and the second core wire group 324 respectively include 10 core wires 321, wherein, along the direction from the first core wire group 323 to the second core wire group 324 (the second direction Y has two opposite directions, the direction from the first core wire group 323 to the second core wire group 324 is one of the directions of the second direction Y, and the direction from the second core wire group 324 to the first core wire group 323 is the other direction of the second direction Y), the lengths of the multiple core wires 321 of the first core wire group 323 increase sequentially; along the direction from the second core wire group 324 to the first core wire group 323, the lengths of the multiple core wires 321 of the second core wire group 324 increase sequentially.

[0120] For example, in some other implementations, refer to Figure 8 As shown, the wiring structure 32 is configured as two groups of point rows 1204, namely a first point row 1205 and a second point row 1206, all core wires 321 connected to the first point row 1205 are the first core wire group 323, all core wires 321 connected to the second point row 1206 are the second core wire group 324, the first core wire group 323 and the second core wire group 324 respectively include 10 core wires 321, wherein, along the direction from the first core wire group 323 to the second core wire group 324 (the second direction Y has two opposite directions, the direction from the first core wire group 323 to the second core wire group 324 is one of the directions of the second direction Y, and the direction from the second core wire group 324 to the first core wire group 323 is the other direction of the second direction Y), the lengths of the multiple core wires 321 of the first core wire group 323 decrease sequentially; along the direction from the second core wire group 324 to the first core wire group 323, the lengths of the multiple core wires 321 of the second core wire group 324 decrease sequentially.

[0121] The lengths of the multiple core wires 321 in the core wire group of the wire arrangement structure 32 are sequentially increased or decreased, which improves the neatness of the core wires 321, reduces the clutter of the multiple core wires 321, reduces the possibility of mutual interference between the core wires 321, facilitates the connection between the wire arrangement structure 32 and the sampler 31, and facilitates the connection between each core wire 321 and the corresponding sampling point 1203.

[0122] like Fig. 9 and Fig.10 As shown, Fig. 9 This is a structural diagram of a wiring structure from one perspective proposed in some embodiments of the present application. Fig.10 for Fig. 9 A partially enlarged schematic diagram; according to some embodiments of the present application, optionally, the wiring structure 32 also includes an integrally constructed connected layer 322, the connected layer 322 includes a plurality of wrapping portions 3221, the outer sides of all core wires 321 are at least partially covered with the wrapping portions 3221, the connected layer 322 is provided with a connecting section 3222 between two adjacent wrapping portions 3221, and the connecting section 3222 is provided with a separation guide portion 3226 along the length direction of the core wire 321 (can refer to the first direction X), and the separation guide portion 3226 is used to locate the separation position of the connecting section 3222.

[0123] The integrally constructed conjoined layer 322 can be understood as an integral structure of the wrapping portion 3221 and the connecting section 3222. The conjoined layer 322 is a structure that connects multiple core wires 321 into one, which can be processed into an integral structure, specifically, an integral structure formed by a molding process such as injection molding.

[0124] In some implementations, the core wire 321 can be wrapped and fixed during the molding process of the connecting layer 322. For example, the core wire 321 is first placed in a mold at a predetermined position, and then the mold is injected to form slurry, so that the slurry is wrapped around the outside of the core wire 321 to form the connecting layer 322.

[0125] The wrapping portion 3221 can be wrapped around the outside of the core wire 321. Along the length direction of the core wire 321 (refer to the first direction), the wrapping portion 3221 covers at least a portion of the length of the core wire 321. Along the circumference of the core wire 321, the wrapping portion 3221 can cover the entire outer peripheral surface of the corresponding area of ​​the core wire 321. The wrapping portion 3221 of the conjoined layer 322 can make the multiple core wires 321 relatively spaced apart to reduce the possibility of mutual influence between the core wires 321. Exemplarily, the conjoined layer 322 can be made of insulating material, such as plastic, rubber, resin, etc., to achieve a better insulation and isolation effect.

[0126] The connecting section 3222 is a portion of the connected layer 322 located between two adjacent wrapping portions 3221 , and the connecting section 3222 connects the two adjacent wrapping portions 3221 into an integrated structure.

[0127] The separation guide 3226 is a component used to guide and locate the separation position of the connection section 3222, wherein when the two adjacent core wires 321 of the connection section 3222 need to be separated, the connection section 3222 needs to be at least partially disconnected. For example, when the sampling point 1203 and part of the core wire 321 of the wiring structure 32 are offset in position, the end of the connection section 3222 corresponding to the core wire 321 can be torn, so that the core wire 321 and the end of the wrapping layer wrapping the core wire 321 are released as a whole and can be offset, so that the core wire 321 can be effectively connected to the corresponding sampling point. The separation position located by the separation guide 3226 is a relatively ideal disconnection position of the connection section. When the connection section 3222 is disconnected at the separation position located by the separation guide 3226, the wrapping parts 3221 at both ends of the connection section 3222 can better retain their integrity. The separation guide portion 3226 can extend continuously from one end of the connecting section 3222 along the length direction of the core wire 321 (can refer to the first direction) to the other end, or the separation guide portion 3226 can extend intermittently from one end of the connecting section 3222 along the length direction of the core wire 321 (can refer to the first direction) to the other end.

[0128] Exemplarily, the separation guide 3226 may be a separation marking line provided on the surface of the connection section 3222. By cutting or cutting tools, the connection section 3222 may be separated along the separation marking line to separate the corresponding core wire 321. Exemplarily, the separation guide 3226 may also be a weak structure. Compared with other positions of the connection section 3222, the separation guide 3226 is easier to be damaged. When the operator applies a destructive force (such as a tearing force, etc.) to the connection section 3222, the connection section 3222 may be separated along the separation guide 3226.

[0129] It should be noted that the separation length of the core wire 321 can be determined as needed, that is, the connecting section 3222 can be divided into two independent parts along the separation guide 3226, or only part of the connecting section 3222 can be separated along the separation guide 3226.

[0130] By providing a separation guide portion 3226 on the connecting segment 3222, when the wiring structure 32 needs to separate part of the core wires 321, the connecting segment 3222 can be separated along the separation guide portion 3226 between the core wire 321 to be separated and the adjacent core wire 321, so that the corresponding core wire 321 and the wrapping portion 3221 wrapping the core wire 321 are separated together, thereby improving the convenience of the wiring separation operation. Under the guidance of the separation guide portion 3226, the accuracy of the separation position of the connecting segment 3222 of the core wire 321 can be improved, thereby reducing the possibility of damage to the wrapping portion 3221 due to the deviation of the separation position, thereby affecting the performance of the wiring structure 32.

[0131] Optionally, the tear strength of the corresponding area of ​​the connecting segment 3222 and the separation guide portion 3226 (refer to the guide segment 3223 for understanding) is smaller than the tear strength of other areas of the connecting segment 3222 (refer to the first side segment 3224 and the second side segment 3225 for understanding).

[0132] The connecting section 3222 can be configured to be a soft material that is easily torn, and can be a material with relatively weak rigidity, such as resin, plastic, rubber, silicone, etc.

[0133] Tear strength refers to the material's ability to resist tearing force. The smaller the tear strength, the easier it is to tear.

[0134] The other areas of the connecting section 3222 refer to the areas of the connecting section 3222 located outside the corresponding areas of the separation guide portion 3226. Exemplarily, the connecting section 3222 includes a first side section 3224, a guide section 3223 and a second side section 3225 which are connected in sequence. The separation guide portion 3226 is arranged on the guide section 3223, the guide section 3223 is the area corresponding to the separation guide portion 3226, and the first side section 3224 and the second side section 3225 are other areas of the connecting section 3222.

[0135] Exemplarily, the connecting section 3222 can be designed to reduce the thickness h of the area where the separation guide portion 3226 is located, so that the tear strength of the corresponding area of ​​the connecting section 3222 and the separation guide portion 3226 (refer to the guide section 3223 for understanding) is less than the tear strength of other areas of the connecting section 3222 (refer to the first side section 3224 and the second side section 3225 for understanding).

[0136] Exemplarily, the connecting section 3222 may also be provided with microstructures such as tear marks or lines on the connecting section 3222 to form a separation guide portion 3226, so that the separation guide portion is easier to tear, thereby making the tear strength of the corresponding area of ​​the connecting section 3222 and the separation guide portion 3226 (refer to the guide section 3223 for understanding) less than the tear strength of other areas of the connecting section 3222.

[0137] In some other implementations, other areas of the connecting segment 3222 and the corresponding areas of the connecting segment 3222 and the separation guide portion 3226 (refer to the guide segment 3223 for understanding) may also use different materials to make the tear strength of the corresponding areas of the connecting segment 3222 and the separation guide portion 3226 (refer to the guide segment 3223 for understanding) smaller than the tear strength of other areas of the connecting segment 3222 (refer to the first side segment 3224 and the second side segment 3225).

[0138] By setting the tear strength of the corresponding area of ​​the connecting section 3222 and the separation guide portion 3226 (refer to the guide section 3223) to be smaller than the tear strength of other areas of the connecting section 3222 (refer to the first side section 3224 and the second side section 3225), the operator can apply a tearing force to the connecting section 3222 to tear the core wire 321 along the separation guide portion 3226, which is easy to operate and can reduce the possibility of affecting the performance of the cable arrangement structure 32 due to damage of the wrapping portion 3221 due to the offset of the separation position.

[0139] According to some embodiments of the present application, optionally, Fig. 9 and Fig.10 As shown, the separation guide portion is configured as a groove extending along the length direction of the core wire.

[0140] The groove refers to a groove structure that is recessed inward relative to the surface of other areas of the connecting section 3222, and the groove can be set to any shape.

[0141] By setting the groove as the separation multi-lead portion, the thickness h of the area corresponding to the connecting section 3222 and the separation guide portion 3226 (i.e., the guide section 3223) can be made smaller than the thickness H of other areas of the connecting section 3222 (i.e., the first side section 3224 and the second side section 3225), so that the tear strength of the area corresponding to the connecting section 3222 and the separation guide portion 3226 is smaller than the tear strength of other areas of the connecting section 3222. The operator can apply a tearing force to the connecting section 3222 to tear the core wire 321 along the separation guide portion 3226, which is easy to operate and can reduce the possibility of the separation position being offset and causing the wrapping portion 3221 to be damaged, thereby affecting the performance of the wiring structure 32. At the same time, the separation guide 3226 in the form of a groove can be used as a positioning structure. When the operator uses a tool to cut, the tool can be inserted into the groove, and the groove can locate the position of the tool, further improving the operational accuracy of the separation of the core wire 321; the groove can also be used as an obvious indicator. After the separation of the core wire 321 is completed, by observing the separation of the groove, it is relatively convenient to judge whether the separation of the core wire 321 has a large deviation, thereby reducing the problem of unqualified core wires 321 being incorrectly assembled and affecting the quality of electrical devices.

[0142] Optionally, the separation guide portion 3226 is configured as an arc groove or a V-shaped groove.

[0143] For example, Fig. 9 and Fig.10 As shown, the groove can be configured as an arc-shaped groove.

[0144] Exemplarily, the groove may also be configured as a V-shaped groove.

[0145] An arc-shaped groove refers to a groove structure in which the cross section of the groove (the cross section perpendicular to the length direction of the core wire 321, where the length direction can refer to the first direction) is at least partially arc-shaped. The groove can be an arc-shaped groove, such as a semicircular groove, or an elliptical arc-shaped groove; the groove can also be a U-shaped groove, etc.

[0146] The V-shaped groove refers to a groove structure in which the cross section of the groove (the cross section perpendicular to the length direction of the core wire 321, where the length direction can refer to the first direction) is at least partially V-shaped, and the bottom of the groove can be set to be V-shaped.

[0147] The separation guide portion 3226 is configured as an arc-shaped groove, a V-shaped groove or a U-shaped groove, which is convenient for processing and easy demolding if the injection molding process is adopted; at the same time, the groove structure of these shapes can form the weakest position at the bottom of the groove, so that the connecting section 3222 can be separated along the bottom of the groove, thereby realizing the separation of the core wire 321, and further improving the operational accuracy of the separation of the core wire 321.

[0148] Optionally, along the arrangement direction of two adjacent core wires 321 (which may be referred to as the second direction), the separation guide portion 3226 is disposed in the middle of the connecting section 3222 .

[0149] Among them, the arrangement direction of the two core wires 321 (can refer to the second direction) is also the arrangement direction of the two wrapping parts 3221 connected by the connecting section 3222. Along the arrangement direction (can refer to the second direction) of the corresponding two wrapping parts 3221 (the corresponding two wrapping parts 3221 refer to the two wrapping parts 3221 located at the two ends of the connecting section 3222 and connected by the connecting section 3222), a separation guide part 3226 is provided in the middle part of the connecting section 3222.

[0150] The middle part of the connecting section 3222 refers to a region extending to both sides of a certain range from the center line of the connecting section 3222 along the arrangement direction (which can refer to the second direction) (the center line extends along the first direction of the core line 321). Exemplarily, the connecting section 3222 can be roughly divided into three equal parts along the arrangement direction (which can refer to the second direction), wherein the middle part can be the middle part.

[0151] Exemplarily, the two corresponding wrapping portions 3221 may be arranged approximately in mirror symmetry with respect to the center line of the connecting section 3222 .

[0152] Optionally, the separation guide portion 3226 may also be arranged in a roughly mirror-symmetrical manner with respect to the center line of the connecting section 3222 .

[0153] Alternatively, if Fig. 9 and Fig.10 As shown, the connection section 3222 is provided with separation guides 3226 on both sides of the third direction Z, and the separation guides 3226 on both sides are arranged opposite to each other along the third direction Z. The third direction Z, the first direction and the second direction intersect each other.

[0154] That is to say, a separation guide portion 3226 can be provided on the first surface 3227, and a separation guide portion 3226 can also be provided on the second surface 3228, and the separation guide portions 3226 of the first surface 3227 and the second surface 3228 are aligned. When the core wire 321 is separated, the connecting section 3222 will be separated from the connecting line between the separation guide portions 3226 of the first surface 3227 and the second surface 3228.

[0155] Exemplarily, the first surface 3227 and the second surface 3228 may be aligned and provided with grooves, and the grooves of the two surfaces may be arranged in a mirror-symmetrical manner.

[0156] By providing the separation guide 3226 on both sides of the connecting section 3222, both sides of the connecting section 3222 can have a separation guide function, and the core wire 321 can be separated from any side of the connecting section 3222, which is convenient to operate. In some implementations, for example, when the separation guide 3226 is provided as a groove, the thickness of the corresponding area of ​​the connecting section 3222 and the separation guide 3226 (i.e., the guide section 3223) can be further reduced, thereby reducing the difficulty of separation.

[0157] like Figures 2 to 7 , Fig. 9 and Fig.10As shown, this embodiment provides a battery device 100, including a box 13, a battery cell assembly 11 and a sampling assembly 30. The battery cell assembly 11 is arranged in the box 13, including a plurality of battery cells 20 arranged in sequence along a first direction X. The battery cell assembly 11 is provided with four rows of point positions 1204 arranged at intervals along a second direction Y, and each row of point positions 1204 includes a plurality of sampling points 1203 arranged at intervals along the first direction X. The sampling assembly 30 is arranged in the box 13, including a sampler 31 and a wiring structure 32. The wiring structure 32 is connected to the sampler 31. The sampling assembly 30 is provided in two, wherein the wiring structure 32 of one sampling assembly 30 is arranged between two adjacent rows of point positions 1204, and the wiring structure 32 of the other sampling assembly 30 is arranged between two other adjacent rows of point positions 1204. The battery cell assembly 11 has a first side and a second side that are oppositely arranged along the first direction X, and the sampler 31 is arranged on the first side; in the same row of point positions 1204 connected to the wiring structure 32, the lengths of the core wires 321 connected to the plurality of sampling points 1203 are arranged in increasing order along the direction from the first side to the second side. At the end connected to the sampler 31, all the core wires 321 of the wiring structure 32 are arranged along the second direction Y, and the first direction X intersects with the second direction Y. Along the second direction Y, all the core wires 321 of the wiring structure 32 are divided into a first core wire group 323 and a second core wire group 324, one of the two adjacent rows of point positions 1204 is connected to the first core wire group 323, and the other row of point positions 1204 is connected to the second core wire group 324; along the direction from the first core wire group 323 away from the second core wire group 324 to the direction close to the second core wire group 324, the lengths of all the core wires 321 of the first core wire group 323 increase sequentially, and along the direction from the second core wire group 324 away from the first core wire group 323 to the direction close to the first core wire group 323, the lengths of all the core wires 321 of the second core wire group 324 increase sequentially. The wiring structure 32 also includes an integrally constructed conjoined layer 322, which includes a plurality of wrapping portions 3221. The outer sides of all core wires 321 are at least partially wrapped with the wrapping portions 3221. A separation guide portion 3226 is provided on the connecting section 3222. The separation guide portion 3226 is used to locate the separation position of the connecting section 3222. The same row of point positions 1204 has N sampling points 1203, where N is an even number (in Figure 7 and Figure 8 In the example, N is specifically 10), each sampling point 1203 of the point row 1204 is connected to N core wires 321 in a one-to-one correspondence, and any one of the N core wires 321 is in a one-to-one correspondence with another core wire 321, forming N / 2 fixed-length core wire pairs (in Figure 7 and Figure 8 In the figure, each row of point positions 1204 forms 5 pairs of fixed-length core wire pairs), and the sum of the lengths of the two core wires 321 of each pair of core wires 321 is a preset length.

[0158] The present embodiment also provides a wiring structure 32, which includes a plurality of core wires 321 insulated from each other, the plurality of core wires 321 including at least one fixed-length core wire pair, a fixed-length core wire pair including two core wires 321, and the sum of the lengths of the two core wires 321 of each fixed-length core wire pair is a preset length.

[0159] The wiring structure 32 of this embodiment may be the wiring structure 32 of the battery device 100 proposed in this application or any embodiment of this application.

[0160] The wiring structure 32 of this embodiment has the same beneficial effects as the battery device 100 proposed in this application or any embodiment of this application.

[0161] Some embodiments of the present application further provide an electrical device, which includes the wiring structure 32 proposed in the present application or any embodiment of the present application, or the electrical device includes the battery device 100 proposed in the present application or any embodiment of the present application.

[0162] Exemplarily, the electrical device may include the wiring structure 32 proposed in the present application or any embodiment of the present application, and the wiring structure 32 may be used to realize the connection of the conductive circuit or communication circuit of the electrical device.

[0163] Exemplarily, the electrical device may include the battery device 100 proposed in the present application or any embodiment of the present application, the battery device 100 includes the wiring structure 32 proposed in the present application or any embodiment of the present application, and the battery device 100 is used to provide electrical energy to the electrical device.

[0164] The electrical equipment of this embodiment has the same beneficial effects as the wiring structure 32 proposed in this application or any embodiment of this application.

[0165] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0166] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Box; At least one battery cell assembly is disposed in the box, and the battery cell assembly has a plurality of sampling points; A sampling assembly, used to collect the status information of the battery monomer assembly, including a sampler and a wiring structure, wherein the wiring structure includes a plurality of core wires insulated from each other, one end of each of the core wires is connected to the sampler, and the other end of any one of the core wires is connected to one of the sampling points; The plurality of core wires include at least one fixed-length core wire pair, one fixed-length core wire pair includes two core wires, and the sum of the lengths of the two core wires of each fixed-length core wire pair is a preset length; The battery cell assembly includes a plurality of battery cells arranged in sequence along a first direction, a plurality of the sampling points are arranged into at least one row of point rows, each row of the point rows includes a plurality of the sampling points arranged at intervals along the first direction, in the same row of the point rows connected by the wiring structure, the core wires connected to at least two of the sampling points constitute the fixed-length core wire pair, and the first direction is an arbitrary direction.

2. The battery device according to claim 1, characterized in that: In all the core wires connected to the point row in the same row: the number of sampling points is set to N, and N is a positive integer greater than or equal to 2; wherein N is set to an even number and all the core wires are set to N / 2 fixed-length core wire pairs, or, N is set to an odd number and all the core wires are set to (N-1) / 2 fixed-length core wire pairs.

3. The battery device according to claim 1, characterized in that: The battery cell assembly has a first side and a second side that are oppositely disposed along the first direction, and the sampler is disposed on the first side; In the same row of points connected by the wiring structure, along the direction from the first side to the second side, the lengths of the core wires connected to the plurality of sampling points are arranged to increase sequentially.

4. The battery device according to claim 1, characterized in that: At one end connected to the sampler, all the core wires of the cable arrangement structure are arranged along a second direction, and the first direction intersects with the second direction.

5. The battery device according to claim 4, characterized in that: Along the second direction, the lengths of the plurality of core wires connected in the same row of the point positions increase or decrease sequentially.

6. The battery device according to claim 4, characterized in that: The plurality of sampling points are arranged into at least two rows of the point rows along the second direction, and one wiring structure is configured to connect two adjacent rows of the point rows.

7. The battery device according to claim 6, characterized in that: Along the second direction, the wiring structure is disposed between two corresponding adjacent rows of the point positions.

8. The battery device according to claim 6, characterized in that: Along the second direction, all the core wires of the cable arrangement structure are divided into a first core wire group and a second core wire group, one of the two adjacent rows of point rows is connected to the first core wire group, and the other row of the point rows is connected to the second core wire group; Along the direction from the first core wire group away from the second core wire group to the direction close to the second core wire group, the lengths of all the core wires of the first core wire group increase sequentially, and along the direction from the second core wire group away from the first core wire group to the direction close to the first core wire group, the lengths of all the core wires of the second core wire group increase sequentially; Alternatively, along the direction from the first core wire group away from the second core wire group to the direction close to the second core wire group, the lengths of all the core wires of the first core wire group decrease sequentially, and along the direction from the second core wire group away from the first core wire group to the direction close to the first core wire group, the lengths of all the core wires of the second core wire group decrease sequentially.

9. The battery device according to any one of claims 1 to 8, characterized in that: The cable arrangement structure also includes an integrally constructed connected layer, which includes a plurality of wrapping parts, and the outer sides of all the core wires are at least partially covered with the wrapping parts. The connected layer is provided with a connecting section between two adjacent wrapping parts, and the connecting section is provided with a separation guide part extending along the length direction of the core wire, and the separation guide part is used to locate the separation position of the connecting section.

10. The battery device according to claim 9, characterized in that: The separation guide portion is provided as a groove extending along the length direction of the core wire.

11. An electrical device, characterized in that: The electrical equipment comprises the battery device according to any one of claims 1-10.

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