Battery device and electrical equipment

Abstract

The present application discloses a battery device and an electrical equipment, relating to the technical field of batteries. The battery device includes a box body, a battery cell group, a conductive connection member, a high-voltage box, a signal acquisition module and a battery management module. A relay and at least one sampling terminal assembly are arranged in the high-voltage box. Both ends of the relay are electrically connected to the conductive connection member respectively. Each sampling terminal assembly includes a sampling wire harness and at least two sampling terminals. Each sampling terminal includes a crimping part and a connecting part which are connected to each other. All the connecting parts of a sampling terminal assembly are connected and installed on a conductive connection member. The sampling wire harness is electrically connected to the crimping part and the signal acquisition module, and the signal acquisition module is electrically connected to the battery management module. The present application can improve the manufacturing efficiency of the battery device, reduce the space occupation and lower the manufacturing cost of the conductive connection member.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery device and an electrical device. Background Art

[0002] For data acquisition of battery cell groups in power batteries, it is mainly achieved by electrically connecting the output poles of the battery cell groups and the sampling terminals through conductive connectors, and then transmitting signals through sampling wire harnesses and finally delivering them to the battery management module. In related technologies, the installation of the sampling terminal structure is relatively cumbersome, consuming a lot of labor in assembly and reducing production efficiency. Summary of the Invention

[0003] The main purpose of this application is to propose a battery device and an electrical device, aiming to at least improve the technical problem that the installation of sampling terminals in the battery device consumes a lot of labor and results in low production efficiency.

[0004] According to some embodiments of this application, a battery device is provided, including a box body, a battery cell group, a conductive connector, a high-voltage box, a signal acquisition module, and a battery management module. The box body is provided with a receiving cavity and a high-voltage cavity. The battery cell group is disposed in the receiving cavity, and the high-voltage box is disposed in the high-voltage cavity. The high-voltage box is provided with a relay and at least one sampling terminal assembly. Both ends of the relay are electrically connected to the conductive connector. Each sampling terminal assembly includes a sampling wire harness and at least two sampling terminals. Each sampling terminal includes a crimping portion and a connecting portion that are connected to each other. All the connecting portions of one sampling terminal assembly are connected and installed on one conductive connector. The sampling wire harness is electrically connected to the crimping portion and the signal acquisition module, and the signal acquisition module is electrically connected to the battery management module.

[0005] By setting that the sampling terminal assembly includes a sampling wire harness and at least two sampling terminals, and each sampling terminal includes a crimping portion and a connecting portion that are connected to each other, and all the connecting portions of each sampling terminal are connected and installed on one conductive connector, during manufacturing, the connecting portions of the sampling terminals can be pre-connected together and then installed at one sampling point of the conductive connector together, which can simplify the manufacturing process and improve the manufacturing efficiency of the battery device. Moreover, the connecting portions of multiple sampling terminals are all installed at one sampling point, which can reduce the number of sampling points arranged on the conductive connector, and thus can reduce the area of the required conductive connector, playing a role in reducing space occupation and the manufacturing cost of the conductive connector.

[0006] In some embodiments, the relay includes a positive relay and a negative relay. Two ends of the positive relay are respectively electrically connected to the positive electrode of the battery cell group and the positive electrode output terminal of the high-voltage box through a conductive connection member; two ends of the negative relay are respectively electrically connected to the negative electrode of the battery cell group and the negative electrode output terminal of the high-voltage box through the conductive connection member, and a sampling terminal assembly is electrically connected to each conductive connection member.

[0007] By setting that two ends of the positive relay are respectively electrically connected to the positive electrode of the battery cell group and the positive electrode output terminal of the high-voltage box through a conductive connection member, two ends of the negative relay are respectively electrically connected to the negative electrode of the battery cell group and the negative electrode output terminal of the high-voltage box through the conductive connection member, and a sampling terminal assembly is electrically connected to each conductive connection member, signal acquisition can be respectively performed from two ends of each relay, so as to realize real-time monitoring of the battery cell group.

[0008] In some embodiments, the at least two sampling terminals include a first sampling terminal and a second sampling terminal, the sampling wire harness includes a first wire harness and a second wire harness, the first sampling terminal includes a first connection portion and a first crimping portion, the second sampling terminal includes a second connection portion and a second crimping portion, the first crimping portion is electrically connected to the signal acquisition module through the first wire harness, the second crimping portion is electrically connected to the signal acquisition module through the second wire harness, and the first connection portion and the second connection portion are clamped and mounted on the conductive connection member.

[0009] By clamping the connection portions of the sampling terminals together and then mounting them on the conductive connection member, the installation process of the sampling terminals can be simplified, the assembly efficiency can be improved, and the crimping portions of the sampling terminals respectively realize independent signal transmission through the wire harnesses, reducing the possibility of mutual interference between signals.

[0010] In some embodiments, the first connection portion is provided with a first communication hole and a clamping portion, the second connection portion is provided with a second communication hole and a clamping position, the clamping portion is clamped with the clamping position, the first communication hole and the second communication hole are correspondingly arranged, and the battery device further includes a fastener, and the fastener passes through the second communication hole and the first communication hole to mount the second connection portion and the first connection portion on the conductive connection member.

[0011] By providing a first communication hole and a clamping portion on the first connection portion, a second communication hole and a clamping position on the second connection portion, the first communication hole and the second communication hole are for the fastener to pass through to lock each connection portion on the conductive connection member, and the clamping portion and the clamping position are used for clamping to realize pre-installation of the first connection portion and the second connection portion, which is convenient for installing each connection portion on the conductive connection member and can also realize clamping of each connection portion.

[0012] In some embodiments, the snap-fitting portion is provided with a first opening, the snap-fitting position is provided with a second elastic snap-fitting, and the second elastic snap-fitting is snap-fitting with the first opening; or, the snap-fitting portion is provided with a first elastic snap-fitting, the snap-fitting position is provided with a second opening, and the first elastic snap-fitting is snap-fitting with the second opening.

[0013] By setting the opening and the elastic buckle for clamping, the clamping and manufacturing methods are simple, easy to operate, and conducive to improving the clamping efficiency.

[0014] In some embodiments, the snap-fitting portion is provided with a first elastic snap-fitting portion and a first opening, the snap-fitting portion is provided with a second elastic snap-fitting portion and a second opening, the first elastic snap-fitting portion is snap-fitted with the second opening, and the second elastic snap-fitting portion is staggered with the first opening.

[0015] By setting the clamping part to include a first elastic clamp and a first opening, the clamping position is provided with a second elastic clamp and a second opening, and when the first connecting part and the second connecting part are clamped, only one group of openings and the elastic clamp are clamped, and the other group is staggered, which is used to realize the clamping of the connecting parts of more than three sampling terminals.

[0016] In some embodiments, the sampling terminal assembly also includes a third sampling terminal, the wiring harness also includes a third wiring harness, the crimping portion of the third sampling terminal is electrically connected to the signal acquisition module through the third wiring harness, the first connecting portion, the second connecting portion, and the connecting portion of the third sampling terminal are connected and installed on the conductive connector, and a third opening and a third elastic buckle are provided on the third sampling terminal; the third opening is clamped with the second elastic buckle or the first elastic buckle; or, the third elastic buckle is clamped with the first opening or the second opening.

[0017] By providing three sampling terminals and providing a third opening and a third elastic buckle on the third sampling terminal, the connection parts of the three sampling terminals can be clamped together and provided at the same sampling point of the conductive connector.

[0018] In some embodiments, the first connecting portion includes a first body and the clamping portion, the second connecting portion includes a second body and the clamping position, the first body and the second body are both annular, the first body surrounds the first connecting hole, and the clamping portion is arranged at the outer edge of the first body; the second body surrounds the second connecting hole, and the clamping position is arranged at the outer edge of the second body.

[0019] By setting both the first body and the second body to be annular, and the first communication hole and the second communication hole formed by their respective annular enclosures to be correspondingly arranged, it is convenient to fix the two connecting parts from the middle position through fasteners, and the clamping part and the clamping position are arranged at the edge position, reducing the possibility of interference between the fasteners and the clamping part or the clamping position.

[0020] In some embodiments, a first limiting member is further provided on the first connecting part, a second limiting member is provided on the second connecting part, and the first limiting member and the second limiting member can abut against each other to limit the relative rotation of the first body with respect to the second body.

[0021] By providing the first limiting member and the second limiting member, the space for the relative rotation of the first body and the second body can be limited, or the mutual rotation of the first body and the second body can be prevented, improving the reliability of the connection.

[0022] In some embodiments, the first limiting member includes at least two first limiting plates arranged at intervals, the second limiting member includes at least two second limiting plates arranged at intervals, and at least two of the first limiting plates and at least two of the second limiting plates are alternately arranged and located on the same circle to be able to limit the clockwise or counterclockwise rotation of the first body relative to the second body.

[0023] By setting the number of the first limiting plates and the second limiting plates to be at least two, and the first limiting plates and the second limiting plates to be alternately arranged, the relative rotation of the first body and the second body can be restricted from multiple points, improving the reliability of the connection of the connecting part and reducing the risk of loosening of the sampling terminal.

[0024] In some embodiments, the number of the first limiting plates and the second limiting plates is both two. When one of the first limiting plates abuts against one of the second limiting plates, the other of the other limiting plates abuts against the other of the second limiting plates.

[0025] By setting the number of the first limiting plates and the second limiting plates to be both two, and the two groups of first limiting plates and second limiting plates abut simultaneously, the blocking effect can be achieved simultaneously from two abutting points, improving the reliability of the connection.

[0026] In some embodiments, the first elastic buckle, the first opening, and the two first limiting plates are all located on the same arc with the center of the first communication hole as the center of the circle; the second elastic buckle, the second opening, and the two second limiting plates are all located on the same arc with the center of the second communication hole as the center of the circle, and the first communication hole and the second communication hole are concentrically arranged.

[0027] By setting the elastic buckle, the opening, the first limiting member, and the second limiting member on the same arc, a moment for blocking relative rotation can be applied from the tangential direction of the arc, improving the reliability of the connection.

[0028] In some embodiments, an extending end extending toward the direction of the first communication hole is further provided on a side of the first limiting plate away from the first body. The first limiting plate, the extending end, and the first body are cooperatively configured to form a clamping groove. A part of the second body is disposed in the clamping groove. The first connecting portion is mounted on the conductive connecting member, and the second connecting portion is clamped to the first connecting portion.

[0029] By providing an extending end on the first limiting plate, the risk of the second body falling off can be reduced, improving the reliability of the connection.

[0030] In some embodiments, a protruding end is provided on the second body. The protruding end is located in the clamping groove and is used to abut against the groove wall of the clamping groove to limit the relative rotation of the first body and the second body.

[0031] By providing a protruding end on the second body, the protruding end is used to abut against the inner groove wall to limit the relative rotation of the first body and the second body, which is beneficial to improving the reliability of the connection.

[0032] In some embodiments, the first limiting member includes a first limiting plate, and the second limiting member includes two second limiting plates. The two second limiting plates are spaced apart to form a gap. The first limiting plate is disposed in the gap, and both sides of the first limiting plate are respectively abutted against the two second limiting plates to be able to limit the clockwise rotation and counterclockwise rotation of the first body relative to the second body.

[0033] By providing a first limiting plate disposed between two second limiting plates, the relative rotation of the first body and the second body can be limited, improving the reliability of the connection.

[0034] In some embodiments, an extending section is provided on the first connecting portion, and a mounting hole is provided on the conductive connecting member. The extending section is clamped in the mounting hole, and the second connecting portion of the sampling terminal is disposed on a side of the first connecting portion of the sampling terminal away from the conductive connecting member.

[0035] By providing the cooperation between the extending end and the mounting hole, the functions of positioning and preliminary installation can be achieved.

[0036] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically exemplified below. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the structures shown in these drawings.

[0038] Figure 1 Structural schematic diagram of a vehicle according to some embodiments of the present application;

[0039] Figure 2 Exploded structural schematic diagram of a battery device according to some embodiments of the present application;

[0040] Figure 3 Schematic diagram of the connection relationship between a battery cell group, a high-voltage box, a conductive connection member and a vehicle body according to some embodiments of the present application;

[0041] Figure 4 Stereoscopic structural schematic diagram of a perspective of the snap connection between a first sampling terminal and a second sampling terminal of a battery device according to some embodiments of the present application;

[0042] Figure 5 Stereoscopic structural schematic diagram of another perspective of the snap connection between a first sampling terminal and a second sampling terminal of a battery device according to some embodiments of the present application;

[0043] Figure 6 Structural schematic diagram of a conductive connection member and a sampling terminal assembly in the related art;

[0044] Figure 7 Structural schematic diagram of a conductive connection member and a sampling terminal assembly of a battery device according to some embodiments of the present application;

[0045] Figure 8 Structural schematic diagram of a perspective of a first sampling terminal of a battery device according to some embodiments of the present application;

[0046] Figure 9 Structural schematic diagram of another perspective of a first sampling terminal of a battery device according to some embodiments of the present application;

[0047] Figure 10 Structural schematic diagram of a perspective of a second sampling terminal of a battery device according to some embodiments of the present application;

[0048] Figure 11 This is a schematic structural diagram of another perspective of the second sampling terminal of the battery device according to some embodiments of the present application.

[0049] Explanation of the reference numerals in the drawings:

[0050] 1000, vehicle;

[0051] 100, battery device; 200, controller; 300, motor;

[0052] 10, box body; 11, upper cover; 12, box main body;

[0053] 20, battery cell group; 201, positive electrode; 202, negative electrode; 30, high-voltage box; 301, positive electrode output terminal; 302, negative electrode output terminal; 40, signal acquisition module; 50, positive relay; 60, negative relay; 70, vehicle body.

[0054] 2, first sampling terminal; 21, first connection part; 210, clamping part; 211, first main body; 212, first communication hole; 213, first elastic buckle; 214, first opening; 215, extending section; 22, first crimping part; 3, second sampling terminal; 31, second connection part; 310, clamping position; 311, second main body; 3112, protruding end; 312, second communication hole; 313, second elastic buckle; 314, second opening; 32, second crimping part; 4, sampling wire harness; 41, first wire harness; 42, second wire harness; 5, conductive connecting piece; 52, mounting hole; 6, fastener; 7, first limiting plate; 8, second limiting plate; 9, extending end; 101, clamping groove.

[0055] The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0056] Next, the technical solutions in the present embodiment will be clearly and completely described in conjunction with the accompanying drawings in the present embodiment. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0057] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the present embodiment are only used to explain the relative position relationship and movement conditions between the components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0058] In addition, in this application, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] In this application, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In addition, the technical solutions between various embodiments of this application can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0061] In this application, the descriptions of directions such as "up", "down", "front", "back", "left", and "right" are based on the directions shown in the drawings, and are only used to explain the relative positional relationship between components in the posture shown in the drawings. If this specific posture changes, then this directional indication also changes accordingly.

[0062] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power stations, but also widely used in electric transportation tools such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand for them is also constantly increasing. Signal sampling is carried out in power batteries using sampling terminals, which results in low production efficiency of battery devices.

[0063] After careful research, the applicant found that in the high-voltage box of the battery device, a sampling terminal is set to be connected to a conductive connection member. The conductive connection member can be a bus bar, and the sampling terminal collects signals from both ends of the relay. Specifically, a sampling terminal assembly includes a wire harness and multiple sampling terminals. Multiple sampling terminals are connected to one conductive connection member, and multiple sampling points are set on the conductive connection member. One sampling terminal is connected to one sampling point. In this way, one sampling terminal needs to be connected to one sampling point, which not only has low wiring efficiency, but also has a risk of incorrect wiring due to the large number of sampling points and sampling terminals.

[0064] Therefore, the present application provides a battery device, including a box body, a battery cell group, a conductive connection member, a high-voltage box, a signal acquisition module, and a battery management module. The box body is provided with a receiving cavity and a high-voltage cavity. The battery cell group is arranged in the receiving cavity, and the high-voltage box is arranged in the high-voltage cavity. A relay and at least one sampling terminal assembly are arranged in the high-voltage box. Both ends of the relay are respectively electrically connected to a conductive connection member. Each sampling terminal assembly includes a sampling wire harness and at least two sampling terminals. Each sampling terminal includes a crimping part and a connecting part connected to each other. All the connecting parts of a sampling terminal assembly are connected and installed on one conductive connection member. The sampling wire harness is electrically connected to the crimping part and the signal acquisition module, and the signal acquisition module is electrically connected to the battery management module. By setting that the sampling terminal assembly includes a sampling wire harness and at least two sampling terminals, each sampling terminal includes a crimping part and a connecting part connected to each other, and all the connecting parts of a sampling terminal assembly are connected and installed on one conductive connection member, the connecting parts of the sampling terminals can be pre-connected together during manufacturing, and then installed together on one sampling point of the conductive connection member, which can simplify the manufacturing process and improve the manufacturing efficiency of the battery device. Moreover, the connecting parts of multiple sampling terminals are all installed on one sampling point, which can reduce the number of sampling points arranged on the conductive connection member, and thus can reduce the area of the required conductive connection member, playing a role in reducing space occupation and reducing the manufacturing cost of the conductive connection member.

[0065] Please refer to Figure 1 , Figure 1Schematic structural diagram of vehicle 1000 provided by some embodiments of the present application. The electrical device can be vehicle 1000, and vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is disposed inside vehicle 1000, and the battery device 100 can be disposed at the bottom, head or tail of vehicle 1000. The battery device 100 can be used for power supply of vehicle 1000. For example, the battery device 100 can be used as the operating power source of vehicle 1000. Vehicle 1000 can also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300. For example, it is used for the working power requirements during the start, navigation and driving of vehicle 1000.

[0066] In some embodiments of the present application, the battery device 100 can not only be used as the operating power source of vehicle 1000, but also be used as the driving power source of vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for vehicle 1000.

[0067] Please refer to Figure 2 , Figure 2 Exploded structural diagram of battery device 100 provided by some embodiments of the present application. The battery device 100 includes a box body 10 and battery cells, and the battery cells are accommodated in the box body 10. Among them, the box body 10 is used to provide an accommodation space for the battery cells, and the box body 10 can adopt various structures. In some embodiments, the box body 10 can include an upper cover 11 and a box body 12. The upper cover 11 and the box body 12 cover each other, and the upper cover 11 and the box body 12 jointly define an accommodation space for accommodating the battery cells. The box body 12 can be a hollow structure with one end open, and the upper cover 11 can be a plate-like structure. The upper cover 11 covers the open side of the box body 12 so that the upper cover 11 and the box body 12 jointly define an accommodation space; the upper cover 11 and the box body 12 can also both be hollow structures with one side open, and the open side of the upper cover 11 covers the open side of the box body 12. Of course, the box body 10 formed by the upper cover 11 and the box body 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0068] The battery device 100 mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel or in a hybrid connection through a busbar component.

[0069] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells.

[0070] As an example, the battery cell assembly may be the battery cell group 20, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery cell group 20 may be formed by bundling a plurality of battery cells with cable ties.

[0071] In some embodiments, the battery device 100 may be a battery pack, which includes a box body 10 and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body 10.

[0072] As an example, the battery cell assembly may be the battery cell group 20, and the battery cell assembly may be accommodated in the box body 10 by fixing the battery cell group 20 in the box body 10.

[0073] As an example, the battery cell assembly may also be accommodated in the box body 10 by directly fixing a plurality of battery cells to the box body 10.

[0074] In the battery device 100, there may be a plurality of battery cells, and the plurality of battery cells may be connected in series, in parallel, or in a combined series-parallel connection. A combined series-parallel connection means that there are both series and parallel connections among the plurality of battery cells. The plurality of battery cells may be directly connected in series, in parallel, or in a combined series-parallel connection together, and then the whole formed by the plurality of battery cells is accommodated in the box body 10; of course, the battery device 100 may also be such that a plurality of battery cells are first connected in series, in parallel, or in a combined series-parallel connection to form a battery module form, and then a plurality of battery modules are connected in series, in parallel, or in a combined series-parallel connection to form a whole and are accommodated in the box body 10. The battery device 100 may further include other structures. For example, the battery device 100 may further include a busbar component for realizing the electrical connection among the plurality of battery cells.

[0075] Wherein, each battery cell may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell may be in a cylindrical shape, a flat shape, a cuboid shape, or other shapes, etc.

[0076] Refer to Figure 3 and Figure 4 , according to some embodiments of the present application, the present application provides a battery device 100, including a box body 10, a battery cell group 20, a conductive connection member 5, a high-voltage box 30, a signal acquisition module 40, and a battery management module. The box body 10 is provided with a receiving cavity and a high-voltage cavity. The battery cell group 20 is disposed in the receiving cavity, and the high-voltage box 30 is disposed in the high-voltage cavity. A relay and at least one sampling terminal assembly are disposed in the high-voltage box 30. Both ends of the relay are electrically connected to the conductive connection member 5. Each sampling terminal assembly includes a sampling wire harness 4 and at least two sampling terminals. Each sampling terminal includes a crimping portion and a connecting portion that are connected to each other. All the connecting portions of one sampling terminal assembly are connected and installed on one conductive connection member 5. The sampling wire harness 4 is electrically connected to the crimping portion and the signal acquisition module 40, and the signal acquisition module 40 is electrically connected to the battery management module.

[0077] The battery cell group 20 includes a plurality of battery cells. The number of battery cell groups 20 in the box body 10 can be one or more. After the battery cell groups 20 are connected in series or in parallel, an output pole is formed. The output pole is electrically connected to the relay in the high-voltage box 30, and the other end of the relay is electrically connected to the output port of the high-voltage box 30. The output port can be used to connect to the vehicle body 70. Specifically, conductive connectors 5 can be provided at both ends of the relay. One port of the relay is electrically connected to the output pole through the conductive connector 5, and the other port of the relay is electrically connected to the output port through another conductive connector 5. A sampling terminal assembly is provided in the high-voltage box 30. The sampling terminal assembly is used to be electrically connected to the conductive connector 5 to obtain the parameter information of the battery cell group 20. The parameter information includes but is not limited to temperature, current or voltage, etc. One sampling terminal assembly is provided corresponding to one conductive connector 5. The sampling wire harness 4 is electrically connected to the crimping part and the signal acquisition module 40. The signal acquisition module 40 is electrically connected to the battery management module. The electrical signal obtained by the connection part from the conductive connector 5 is transmitted to the crimping part, and then transmitted from the crimping part to the signal acquisition module 40 through the sampling wire harness 4. The signal acquisition module 40 can realize the acquisition, processing and conversion of signals, and send the converted signals to the battery management module to realize the real-time monitoring of the battery cell group 20 by the battery management module.

[0078] The conductive connector 5 here can be a copper bar, or a bus bar. In the related art, referring to Figure 6 , generally, sampling points of the sampling terminals are set on the copper bar. The number of sampling points is the same as the number of sampling terminals. If there are two sampling terminals, two sampling points are set. The sampling point is the position on the conductive connector 5 where the sampling terminal is connected. The sampling terminals and the sampling points are provided in one-to-one correspondence, and one sampling terminal is provided on each sampling point. In the solution of the present application, the sampling terminal assembly includes a wire harness and at least two sampling terminals. Referring to Figure 7 , taking the case where the sampling terminals are two as an example, each sampling terminal includes a crimping part and a connecting part. The two connecting parts are connected together and electrically connected to one sampling point. The two crimping parts are respectively connected to the wire harness. Here, the two crimping parts are respectively connected to the wire harness, so the transmission of signals is not affected. At this time, although there are two sampling terminals, only one sampling point needs to be set on the conductive connector 5. Of course, when the number of sampling terminals is three or more than three, the three connecting parts of the three sampling terminals can also be all connected together. Or the sampling terminals can be grouped. For example, when the number of sampling terminals is five, it can be divided into two groups. One group is the connecting parts of two sampling terminals connected together, and one group is the connecting parts of three sampling terminals connected together. Of course, ordinary terminals can also be included. For an ordinary terminal, one ordinary terminal is electrically connected to one sampling point, and only one ordinary terminal is set on one sampling point.

[0079] During manufacturing, the two connecting parts can be pre - spliced together. For example, the sampling terminals with pre - spliced connecting parts are obtained from the supplier, or the factory can pre - connect the connecting parts of the sampling terminals before assembling the battery device 100. This can improve the wiring efficiency when manufacturing the high - voltage box 30, and thus improve the production efficiency of the battery device 100. In addition, adopting the technical solution of the present application can reduce the number of sampling points on the copper bar, reduce the area of the required copper bar, and further simplify the manufacturing process of the copper bar, reduce the space occupation and lower the manufacturing cost of the copper bar. Additionally, it should be noted that the method of pre - assembling the connecting parts also has an anti - misconnection function, which can reduce the risk of wrong wiring caused by too many installation numbers of sampling terminals and sampling points, or overly intense production.

[0080] By setting that the sampling terminal assembly includes a sampling wire harness 4 and at least two sampling terminals, each sampling terminal includes a crimping part and a connecting part connected to each other, and all the connecting parts of a sampling terminal assembly are connected and installed on a conductive connector 5. During manufacturing, the connecting parts of the sampling terminals can be pre - connected together and then installed together on a sampling point of the conductive connector 5, which can simplify the manufacturing process and improve the manufacturing efficiency of the battery device 100. Moreover, the connecting parts of multiple sampling terminals are all installed on one sampling point, which can reduce the number of sampling points arranged on the conductive connector 5, and further reduce the area of the required conductive connector 5, playing a role in reducing space occupation and lowering the manufacturing cost of the conductive connector 5.

[0081] In some embodiments, the relay includes a positive relay 50 and a negative relay 60. The two ends of the positive relay 50 are respectively electrically connected to the positive electrode 201 of the battery cell group 20 and the positive electrode output terminal 301 of the high - voltage box 30 through the conductive connector 5; the two ends of the negative relay 60 are respectively electrically connected to the negative electrode 202 of the battery cell group 20 and the negative electrode output terminal 302 of the high - voltage box 30 through the conductive connector 5, and each conductive connector 5 is electrically connected to a sampling terminal assembly.

[0082] The number of battery cell groups 20 can be one or multiple. Multiple battery cell groups 20 are connected in series or in parallel and finally output from two output poles, which are the positive pole 201 and the negative pole 202 respectively. At least two relays are provided in the high-voltage box 30, namely the positive relay 50 and the negative relay 60. The high-voltage box 30 is also provided with a positive-pole output terminal 301 electrically connected to the positive relay 50 and a negative-pole output terminal 302 electrically connected to the negative relay 60. The number of conductive connectors 5 is four. The two ends of the positive relay 50 are electrically connected to the positive-pole output terminal 301 and the positive pole 201 respectively through two different conductive connectors 5. The two ends of the negative relay 60 are electrically connected to the negative-pole output terminal 302 and the negative pole 202 respectively through two other different conductive connectors 5. A sampling terminal assembly is connected to each conductive connector 5, that is, the number of sampling terminal assemblies is four, and the connection positions of the connection parts of the sampling terminals are the two ends of the relay. As Figure 3 shown in, sampling is performed at four positions A1, A2, A3, and A4 on the conductive connector 5. And the wire harnesses of the four sampling terminal assemblies are all connected to the signal acquisition module 40. In this way, signal acquisition of each conductive connector 5 connected to the relay in the high-voltage box 30 can be realized, and real-time monitoring of each parameter information of the battery cell group 20 can be realized.

[0083] By setting that the two ends of the positive relay 50 are electrically connected to the positive pole 201 of the battery cell group 20 and the positive-pole output terminal 301 of the high-voltage box 30 respectively through the conductive connector 5, and the two ends of the negative relay 60 are electrically connected to the negative pole 202 of the battery cell group 20 and the negative-pole output terminal 302 of the high-voltage box 30 respectively through the conductive connector 5, and a sampling terminal assembly is electrically connected to each conductive connector 5, signal acquisition can be performed respectively from the two ends of each relay, and real-time monitoring of each parameter information of the battery cell group 20 can be realized.

[0084] Referring to Figure 3 and Figure 7 , in some embodiments, at least two sampling terminals include a first sampling terminal 2 and a second sampling terminal 3. The sampling wire harness 4 includes a first wire harness 41 and a second wire harness 42. The first sampling terminal 2 includes a first connection part 21 and a first crimping part 22. The second sampling terminal 3 includes a second connection part 31 and a second crimping part 32. The first crimping part 22 is electrically connected to the signal acquisition module 40 through the first wire harness 41. The crimping part of the second sampling terminal 3 is electrically connected to the signal acquisition module 40 through the second wire harness 42. The first connection part 21 and the second connection part 31 are clamped and installed on the conductive connector 5.

[0085] A sampling terminal assembly may include at least two sampling terminals. That is to say, the number of sampling terminals can be two, three, four or more. For ease of description, in this embodiment, the structure and connection relationship of the sampling terminals are specifically described with the number of sampling terminals being two, but it does not mean that the number of sampling terminals in a sampling terminal assembly is two, or two is the preferred solution. Specifically, when the number of sampling terminals is two, the number of crimping portions and connecting portions is also two. At this time, the two connecting portions of the two sampling terminals are connected together and are installed at the same sampling point of the conductive connection member 5. The crimping portions do not interfere with each other. The first crimping portion 22 is electrically connected to the signal acquisition module 40 through the first wire harness 41, and the crimping portion of the second sampling terminal 3 is electrically connected to the signal acquisition module 40 through the second wire harness 42. The first wire harness 41 and the second wire harness 42 are routed separately and transmit signals independently, and the signals between the two will not interfere with each other. As for the connection method between the crimping portion and the connecting portion, it can be splicing, clamping, fixed connection or other connection methods, which are not specifically limited in this application. Clamping can facilitate installation and disassembly.

[0086] By clamping the connecting portions of the sampling terminals together and then installing them on the conductive connection member 5, the installation process of the sampling terminals can be simplified, the assembly efficiency can be improved, and the crimping portions of the sampling terminals are respectively used to independently transmit signals through wire harnesses, reducing the possibility of interference between signals.

[0087] Referring to Figure 4 and Figure 7 , in some embodiments, the first connecting portion 21 is provided with a first communication hole 212 and a clamping portion 210, the second connecting portion 31 is provided with a second communication hole 312 and a clamping position 310, the clamping portion 210 is clamped with the clamping position 310, the first communication hole 212 and the second communication hole 312 are correspondingly arranged, and the battery device 100 further includes a fastener 6. The fastener 6 passes through the second communication hole 312 and the first communication hole 212 to install the second connecting portion 31 and the first connecting portion 21 on the conductive connection member 5.

[0088] The first communication hole 212 and the second communication hole 312 are both through holes and are correspondingly arranged. In a specific embodiment, the first communication hole 212 and the second communication hole 312 are concentrically arranged and have the same size. A connection hole is also correspondingly arranged at the sampling point of the conductive connection member 5 to facilitate the fastener 6 to pass through the second communication hole 312. The first communication hole 212 is installed on the connection hole to fix the first connection part 21 and the second connection part 31 on the conductive connection member 5. The fastener 6 here can be a screw or a rivet. The first communication hole 212 is generally arranged at the middle position of the first sampling terminal 2, and the first clamping part 210 is generally arranged at the edge position. Similarly, the second communication hole 312 is generally arranged at the middle position of the second sampling terminal 3, and the clamping position 310 is generally arranged at the edge position, and the clamping part 210 and the clamping position 310 are correspondingly arranged to clamp the first connection part 21 and the second connection part 31 together through the clamping of the clamping position 310 and the clamping part 210.

[0089] By providing the first communication hole 212 and the clamping part 210 on the first connection part 21, and the second communication hole 312 and the clamping position 310 on the second connection part 31, the first communication hole 212 and the second communication hole 312 allow the fastener 6 to pass through to lock each connection part on the conductive connection member 5, and the clamping part 210 and the clamping position 310 are used for clamping to achieve the pre-installation of the first connection part 21 and the second connection part 31, which is convenient for installing each connection part on the conductive connection member 5 and can also achieve the clamping of each connection part.

[0090] In some embodiments, the clamping part 210 is provided with a first opening 214, and the clamping position 310 is provided with a second elastic buckle 313, and the second elastic buckle 313 is clamped with the first opening 214; or, the clamping part 210 is provided with a first elastic buckle 213, and the clamping position 310 is provided with a second opening 314, and the first elastic buckle 213 is clamped with the second opening 314.

[0091] Regarding the specific form of the clamping between the clamping part 210 and the clamping position 310, a first opening 214 can be provided on the clamping part 210, and a second elastic buckle 313 can be provided on the clamping position 310, and the clamping of the two connection parts is achieved through the clamping of the first opening 214 and the second elastic buckle 313. Of course, it can also be that a first elastic buckle 213 is provided on the clamping part 210, and a second opening 314 is provided on the clamping position 310, and the clamping of the two connection parts is achieved through the clamping of the first elastic buckle 213 and the second opening 314. In actual production, the connection part and the crimping part are generally made of relatively thin metal and have a certain elastic margin. The first elastic buckle 213 and the second elastic buckle 313 here can be elastic sheets.

[0092] By setting the way of clamping the opening and the elastic buckle, the clamping and manufacturing methods are simple, easy to operate, and beneficial to improving the clamping efficiency.

[0093] Reference Figure 4 , Figure 8 and Figure 10 In some embodiments, the snap-fitting portion 210 is provided with a first elastic snap-fitting 213 and a first opening 214, and the snap-fitting position 310 is provided with a second elastic snap-fitting 313 and a second opening 314. The first elastic snap-fitting 213 is snap-fitted with the second opening 314, and the second elastic snap-fitting 313 is staggered with the first opening 214.

[0094] In the previous embodiment, the first elastic buckle 213 or the first opening 214 is provided on the clamping portion 210, and one of the two is selected, and the second opening 314 or the second elastic buckle 313 is correspondingly provided on the clamping position 310, and one of the two is correspondingly selected to be clamped with the clamping portion 210. This situation is particularly suitable for the case where the number of sampling terminals in a sampling terminal assembly is two. If the number of sampling terminals is greater than or equal to three, if only one buckle or opening is provided, there is no extra buckle or opening for clamping. Therefore, in the embodiment of the present application, a first elastic buckle 213 and a first opening 214 are provided on the clamping portion 210, and a second elastic buckle 313 and a second opening 314 are provided at the clamping position 310, wherein the first elastic buckle 213 and the second opening 314 are clamped to realize the pre-connection of the first connecting portion 21 and the second connecting portion 31, and the second elastic buckle 313 and the first opening 214 are staggered and not clamped together, which is to reserve the clamping position 310 for the third or fourth sampling terminal, so as to facilitate the sequential clamping of multiple sampling terminals when the number of sampling terminals is multiple. Of course, those skilled in the art can understand that in this embodiment, the first elastic buckle 213 and the second opening 314 can also be staggered, and the second elastic buckle 313 and the first opening 214 can be clamped, and the buckles or openings that are not clamped are reserved for connection with other sampling terminals.

[0095] By setting the clamping part 210 to include a first elastic clamp 213 and a first opening 214, the clamping position 310 is provided with a second elastic clamp 313 and a second opening 314, and when the first connecting part 21 and the second connecting part 31 are clamped, only one group of openings and elastic clamps are clamped, and the other group is staggered, which is used to realize the clamping of the connecting parts of more than three sampling terminals.

[0096] In some embodiments, the sampling terminal assembly further includes a third sampling terminal, and the wire harness further includes a third wire harness. The crimping portion of the third sampling terminal is electrically connected to the signal acquisition module 40 through the third wire harness. The first connection portion 21, the second connection portion 31, and the connection portion of the third sampling terminal are connected and mounted on the conductive connector 5. The third sampling terminal is provided with a third opening and a third elastic buckle; the third opening is clamped with the second elastic buckle 313 or the first elastic buckle 213; or, the third elastic buckle is clamped with the first opening 214 or the second opening 314.

[0097] Continuing with the foregoing embodiments, when the number of sampling terminals is three, it may be that the third opening of the third sampling terminal is clamped with the unconnected second elastic buckle 313, or the third opening of the third sampling terminal is clamped with the first elastic buckle 213; it may be that the third elastic buckle of the third sampling terminal is clamped with the first opening 214, or the third elastic buckle of the third sampling terminal is clamped with the second opening 314, thereby realizing that the three connection portions are firmly clamped together and mounted on one sampling point of the conductive connector 5. Of course, the sampling wire harness 4 also includes a third wire harness, reducing the risk of signal interference with each other.

[0098] By providing three sampling terminals and providing a third opening and a third elastic buckle on the third sampling terminal, the connection portions of the three sampling terminals can be clamped together and arranged at the same sampling point of the conductive connector 5.

[0099] Referring to Figure 4 、 Figure 8 and Figure 10 In some embodiments, the first connection portion 21 includes a first body 211 and a clamping portion 210, and the second connection portion 31 includes a second body 311 and a clamping position 310. Both the first body 211 and the second body 311 are annular. The first body 211 encloses a first communication hole 212, and the clamping portion 210 is arranged on the outer edge of the first body 211; the second body 311 encloses a second communication hole 312, and the clamping position 310 is arranged on the outer edge of the second body 311.

[0100] The first body 211 and the second body 311 may be similar in shape, generally annular, and substantially equal in size. The inner circle of the annular shape of the first body 211 is the first communication hole 212, and the inner circle of the annular shape of the second body 311 is the second communication hole 312. The first communication hole 212 and the second communication hole 312 are substantially the same in size and are arranged almost concentrically, facilitating the installation of the fastener 6. The clamping portion 210 and the clamping position 310 are respectively arranged at the outer edge positions of the first body 211 and the second body 311.

[0101] By setting both the first body 211 and the second body 311 to be annular, and the first communication hole 212 and the second communication hole 312 formed by their respective annular enclosures are correspondingly arranged, it is convenient to fix the two connecting parts from the middle position by the fastener 6, and the clamping part 210 and the clamping position 310 are arranged at the edge position, reducing the possibility of interference between the fastener 6 and the clamping part 210 or the clamping position 310.

[0102] Referring to Figure 4 and Figure 5 , in some embodiments, a first limiting member is further provided on the first connecting part 21, a second limiting member is provided on the second connecting part 31, and the first limiting member and the second limiting member can abut against each other to limit the relative rotation of the first body 211 with respect to the second body 311.

[0103] As previously described, the elastic buckle and the opening can be used to clamp the connecting parts together, and the connecting parts are fixed to the conductive connecting member 5 by the fastener 6. However, during the use or transportation of the battery device 100, the wire harness may move around. In actual use, there is a large amount of movement between the connecting parts, and they are particularly prone to relative rotation, reducing the reliability of the connection. For this reason, a first limiting member and a second limiting member are respectively provided on the first connecting part 21 and the second connecting part 31. Between the connecting parts, that is, just before the first body 211 and the second body 311 start to rotate relative to each other or after they rotate a very small distance relative to each other, the first limiting member and the second limiting member abut against each other in the rotation direction, which can reduce the possibility of the connecting parts continuing to rotate relative to each other.

[0104] By providing the first limiting member and the second limiting member, the space for the relative rotation of the first body 211 and the second body 311 can be restricted, or the relative rotation of the first body 211 and the second body 311 can be prevented, improving the reliability of the connection.

[0105] Referring to Figure 4 and Figure 5 , in some embodiments, the first limiting member includes at least two first limiting plates 7 arranged at intervals, the second limiting member includes at least two second limiting plates 8 arranged at intervals, and the at least two first limiting plates 7 and the at least two second limiting plates 8 are alternately arranged and located on the same circle to be able to limit the clockwise or counterclockwise rotation of the first body 211 relative to the second body 311.

[0106] At least two first limiting plates 7 can be arranged on the outer edge of the first body 211, and at least two second limiting plates 8 can also be arranged on the outer edge of the second body 311. The first limiting plates 7 and the second limiting plates 8 are arranged alternately and are located on the arc of the same circle. In this way, when the first body 211 rotates relative to the second body 311, or when the first body 211 has a tendency to rotate relative to the second body 311, the first limiting plates 7 and the second limiting plates 8 will abut against each other to block the first body 211 and the second body 311 from rotating relative to each other clockwise or counterclockwise. Here, the number of both the first limiting plates 7 and the second limiting plates 8 is set to at least two, so that restrictions can be imposed from multiple points, improving the reliability of the connection. Of course, arranging the first limiting plates 7 and the second limiting plates 8 at the edge positions of the first body 211 and the second body 311 respectively is also to increase the torque for blocking rotation and further enhance the effect of restricting rotation.

[0107] By setting the number of both the first limiting plates 7 and the second limiting plates 8 to be at least two, and arranging the first limiting plates 7 and the second limiting plates 8 alternately, the relative rotation of the first body 211 and the second body 311 can be restricted from multiple points, improving the reliability of the connection of the connecting part and reducing the risk of loosening of the sampling terminals.

[0108] Referring to Figure 4 and Figure 5 , in some embodiments, the number of both the first limiting plates 7 and the second limiting plates 8 is two. When one first limiting plate 7 abuts against one second limiting plate 8, the other limiting plate abuts against the other second limiting plate 8.

[0109] The number of both the first limiting plates 7 and the second limiting plates 8 is two. When one group of the first limiting plates 7 and the second limiting plates 8 abuts, the other group of the first limiting plates 7 and the second limiting plates 8 also abuts simultaneously. In this way, a restricting torque in the same direction is provided to the first body 211 and the second body 311 from two positions, blocking the first body 211 and the second body 311 from rotating relative to each other clockwise or counterclockwise.

[0110] By setting the number of both the first limiting plates 7 and the second limiting plates 8 to be two, and the two groups of the first limiting plates 7 and the second limiting plates 8 abut simultaneously, the blocking effect can be achieved simultaneously from two abutting points, improving the reliability of the connection.

[0111] Referring to Figure 8 and Figure 10, in some embodiments, the first elastic buckle 213, the first opening 214, and the two first limiting plates 7 are all located on the same circular arc with the center of the first communication hole 212 as the center of the circle; the second elastic buckle 313, the second opening 314, and the two second limiting plates 8 are all located on the same circular arc with the center of the second communication hole 312 as the center of the circle, and the first communication hole 212 and the second communication hole 312 are concentrically arranged.

[0112] Specifically, the first communication hole 212 and the second communication hole 312 are concentrically arranged, and the radii of the two circular arcs are the same. That is to say, the first elastic buckle 213, the first opening 214, the two first limiting plates 7, the second elastic buckle 313, the second opening 314, and the two second limiting plates 8 are all located on the same circular arc, so that the same torque can be applied in the same direction of the circular arc to limit the relative rotation of the first body 211 and the second body 311.

[0113] By arranging the elastic buckle, the opening, the first limiting member, and the second limiting member on the same circular arc, the torque blocking the relative rotation can be applied from the tangential direction of the circular arc, improving the reliability of the connection.

[0114] Referring to Figure 8 and Figure 9 , in some embodiments, on the side of the first limiting plate 7 away from the first body 211, there is also an extending end 9 extending in the direction of the first communication hole 212. The first limiting plate 7, the extending end 9, and the first body 211 are configured to form a structure where a part of the second body 311 is arranged in the clamping groove 101, the first connecting portion 21 is installed on the conductive connecting member 5, and the second connecting portion 31 is clamped to the first connecting portion 21. Of course, when more than three sampling terminals need to be connected, such as including a third sampling terminal, a similar extending end 9 can also be provided on the second limiting plate 8 and cooperate with the second body 311 and the second limiting plate 8 to form a similar clamping groove 101 for clamping the third body of the third sampling terminal.

[0115] An extending end 9 is provided on the first limiting plate 7. The first limiting plate 7 and the extending end 9 together form a bent structure, and the bending direction is towards the direction where the first communication hole 212 is located. The bent structure and the first body 211 cooperate to form a clamping groove 101. A part of the second body 311 is arranged in the clamping groove 101, and the bottom surface of the extending end 9 abuts against a part of the top surface of the second body 311, which can reduce the possibility of the second body 311 falling off from the top. During specific installation, the connecting portions of the two sampling terminals can be connected first and then installed at the sampling positions of the conductive connecting member 5. This way of pre-connecting the connecting portions can improve production efficiency.

[0116] By providing the extending end 9 on the first limiting plate 7, the risk of the second body 311 falling off can be reduced, and the reliability of the connection can be improved.

[0117] Reference Figure 10 and Figure 11 Figure 11 In some embodiments, a protruding end 3112 is provided on the second body 311. The protruding end 3112 is located in the clamping groove 101 and is used to abut against the groove wall of the clamping groove 101 to limit the relative rotation of the first body 211 and the second body 311.

[0118]

[0118] The protruding end 3112 is provided on the second body 311. After the second body 311 and the first body 211 are installed, the protruding end 3112 is located in the clamping groove 101, and the protruding end 3112 can abut against the inner groove wall of the clamping groove 101, providing resistance to the relative rotation of the first body 211 and the second body 311. Specifically, the protruding end 3112 is exposed on the surface of the second body 311, and the bottom surface of the protruding end 9 constitutes a part of the inner groove wall, and the top end of the protruding end 3112 abuts against the bottom surface of the protruding end 9. Of course, in some other embodiments, the protruding end 3112 may also be provided on the first body 211.

[0119] By providing the protruding end 3112 on the second body 311, the protruding end 3112 is used to abut against the groove wall of the clamping groove 101 to limit the relative rotation of the first body 211 and the second body 311, which is beneficial to improving the reliability of the connection.

[0120]

[0119] In some embodiments, the first limiting member includes a first limiting plate 7, and the second limiting member includes two second limiting plates 8. The two second limiting plates 8 are arranged at intervals to form a gap. The first limiting plate 7 is arranged in the gap, and both sides of the first limiting plate 7 abut against the two second limiting plates 8 respectively to be able to limit the clockwise rotation and counterclockwise rotation of the first body 211 relative to the second body 311.

[0121] In this embodiment, the number of the first limiting plates 7 is only one. After the first connecting portion 21 and the second connecting portion 31 are clamped, the first limiting plate 7 is located between the two second limiting plates 8, and there is no space or only a tiny interval between both sides of the first limiting plate 7 and the two second limiting plates 8. In this way, when the first body 211 and the second body 311 rotate relative to each other clockwise, one side of the first limiting plate 7 will abut against one of the second limiting plates 8 to limit the clockwise rotation; when the first body 211 and the second body 311 rotate relative to each other counterclockwise, the other side of the first limiting plate 7 will abut against the other second limiting plate 8 to limit the counterclockwise rotation, thereby achieving the purpose of limiting the clockwise rotation and counterclockwise rotation of the first body 211 relative to the second body 311.

[0122]

[0120] By providing one first limiting plate 7 arranged between the two second limiting plates 8, it can play a role in limiting the relative rotation of the first body 211 and the second body 311, and improve the reliability of the connection.

[0123] Refer to Figure 7 and Figure 8 In some embodiments, the first connection portion 21 is provided with an extending section 215, the conductive connecting member 5 is provided with a mounting hole 52, the extending section 215 is snap-fitted into the mounting hole 52, and the second connection portion 31 of the sampling terminal is disposed on a side of the first connection portion 21 of the sampling terminal away from the conductive connecting member 5.

[0124] The first sampling terminal 2 here refers to the sampling terminal located at the bottommost, and is also the sampling terminal directly mounted on the conductive connecting member 5. The extending end 9 and the mounting hole 52 on the conductive connecting member 5 can not only play a positioning role, but also play an installation role, facilitating further fixation by the fastener 6 subsequently.

[0125] By providing the cooperation between the extending end 9 and the mounting hole 52, the positioning and preliminary installation functions can be achieved.

[0126] According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10, a battery cell group 20, a conductive connection member 5, a high-voltage box 30, a signal acquisition module 40, and a battery management module. The box body 10 is provided with a receiving cavity and a high-voltage cavity. The battery cell group 20 is disposed in the receiving cavity, and the high-voltage box 30 is disposed in the high-voltage cavity. A relay and at least one sampling terminal assembly are provided in the high-voltage box 30. Both ends of the relay are electrically connected to the conductive connection member 5 respectively. Each sampling terminal assembly includes a sampling wire harness 4 and at least two sampling terminals. Each sampling terminal includes a crimping portion and a connection portion connected to each other. All the connection portions of a sampling terminal assembly are connected and installed on a conductive connection member 5. The sampling wire harness 4 is electrically connected to the crimping portion and the signal acquisition module 40, and the signal acquisition module 40 is electrically connected to the battery management module. The at least two sampling terminals include a first sampling terminal 2 and a second sampling terminal 3. The sampling wire harness 4 includes a first wire harness 41 and a second wire harness 42. The crimping portion of the first sampling terminal 2 is electrically connected to the signal acquisition module 40 through the first wire harness 41, and the crimping portion of the second sampling terminal 3 is electrically connected to the signal acquisition module 40 through the second wire harness 42. The first connection portion 21 includes a first body 211 and a clamping portion 210, and the second connection portion 31 includes a second body 311 and a clamping position 310. Both the first body 211 and the second body 311 are annular. The first body 211 encloses a first communication hole 212, and the clamping portion 210 is disposed on the outer edge of the first body 211; the second body 311 encloses a second communication hole 312, and the clamping position 310 is disposed on the outer edge of the second body 311. The first communication hole 212 and the second communication hole 312 are correspondingly arranged. The battery device 100 further includes a fastener 6. The fastener 6 passes through the second communication hole 312 and the first communication hole 212 to install the second connection portion 31 and the first connection portion 21 on the conductive connection member 5. In a further embodiment, a first limiting member is further provided on the first connection portion 21, and a second limiting member is provided on the second connection portion 31. The first limiting member and the second limiting member can abut against each other to limit the relative rotation of the first body 211 with respect to the second body 311. An extending end 9 extending in the direction of the first communication hole 212 is further provided on one side of the first limiting plate 7 away from the first body 211. The first limiting plate 7, the extending end 9 and the first body 211 cooperate to form a clamping groove 101. A part of the second body 311 is disposed in the clamping groove 101. The first connection portion 21 is installed on the conductive connection member 5, and the second connection portion 31 is clamped to the first connection portion 21. A protruding end 3112 is provided on the second body 311, and the protruding end 3112 is located in the clamping groove 101. The protruding end 3112 is used to abut against the extending end 9 to limit the relative rotation of the first body 211 and the second body 311. The battery device 100 has the advantages of high production efficiency, being able to reduce the risk of incorrect connection of sampling terminals, saving the amount of copper busbar used, and reducing the occupied space.

[0127] According to some embodiments of the present application, the present application provides an electrical device, which includes a device body and the above-mentioned battery device 100, and the battery device 100 is arranged in the device body. The above-mentioned electrical device may be a vehicle 1000. Since the electrical device includes any technical solution of all the above embodiments, it has at least all the beneficial effects brought by any of the above technical solutions, which will not be elaborated here one by one.

[0128] The above are only optional embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the specification and drawings of the present application under the application concept of the present application, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: include: A box body, wherein the box body is provided with a containing chamber and a high-pressure chamber; A battery cell group, wherein the battery cell group is arranged in the accommodation cavity; Conductive connectors; A high-voltage box, the high-voltage box is arranged in the high-voltage cavity, a relay and at least one sampling terminal assembly are arranged in the high-voltage box, and two ends of the relay are electrically connected to the conductive connecting piece respectively; Signal acquisition module; The sampling terminal assembly includes a sampling harness, a first sampling terminal and a second sampling terminal, the sampling harness includes a first harness and a second harness, the first sampling terminal includes a first connecting portion and a first crimping portion, the second sampling terminal includes a second connecting portion and a second crimping portion, the first crimping portion is electrically connected to the signal acquisition module through the first harness, and the second crimping portion is electrically connected to the signal acquisition module through the second harness; The first connecting portion is provided with a first connecting hole and a clamping portion, the second connecting portion is provided with a second connecting hole and a clamping position, the clamping portion is clamped with the clamping position, and the first connecting hole and the second connecting hole are provided correspondingly; a fastener, the fastener passing through the second communication hole and the first communication hole to mount the second connection portion and the first connection portion on the conductive connection member; A battery management module, wherein the signal acquisition module is electrically connected to the battery management module.

2. The battery device according to claim 1, characterized in that: The clamping portion is provided with a first opening, the clamping position is provided with a second elastic buckle, and the second elastic buckle is clamped with the first opening; or, The clamping portion is provided with a first elastic clamp, the clamping position is provided with a second opening, and the first elastic clamp is clamped with the second opening.

3. The battery device according to claim 1, characterized in that: The clamping portion is provided with a first elastic clamp and a first opening, the clamping position is provided with a second elastic clamp and a second opening, the first elastic clamp is clamped with the second opening, and the second elastic clamp is staggered with the first opening.

4. The battery device according to claim 3, characterized in that: The first connecting part includes a first body and the clamping part, the second connecting part includes a second body and the clamping position, the first body and the second body are both annular, the first body surrounds the first connecting hole, and the clamping part is arranged at the outer edge of the first body; the second body surrounds the second connecting hole, and the clamping position is arranged at the outer edge of the second body.

5. The battery device according to claim 4, characterized in that: The first connection portion is further provided with a first limiting member, and the second connection portion is provided with a second limiting member. The first limiting member and the second limiting member can abut against each other to limit the first body from rotating relative to the second body.

6. The battery device according to claim 5, characterized in that: The first limiting member includes at least two first limiting plates spaced apart from each other, and the second limiting member includes at least two second limiting plates spaced apart from each other. At least two of the first limiting plates and at least two of the second limiting plates are alternately arranged and located on the same circle so as to limit the first body from rotating clockwise or counterclockwise relative to the second body.

7. The battery device according to claim 6, characterized in that: There are two first limiting plates and two second limiting plates, and when one of the first limiting plates abuts against one of the second limiting plates, the other limiting plate abuts against the other of the second limiting plates.

8. The battery device according to claim 7, characterized in that: The first elastic buckle, the first opening, and the two first limiting plates are all located on the same arc with the center of the first connecting hole as the center; the second elastic buckle, the second opening, and the two second limiting plates are all located on the same arc with the center of the second connecting hole as the center, and the first connecting hole and the second connecting hole are concentrically arranged.

9. The battery device according to claim 6, characterized in that: A protruding end extending toward the first connecting hole is also provided on the side of the first limiting plate away from the first body, and the first limiting plate, the protruding end and the first body are cooperated to form a snap-in groove, the second body part is arranged in the snap-in groove, the first connecting part is installed on the conductive connecting piece, and the second connecting part is snap-connected to the first connecting part.

10. The battery device according to claim 9, characterized in that: The second body is provided with a protruding end, the protruding end is located in the clamping groove, and the protruding end is used to abut against the groove wall of the clamping groove to limit the relative rotation of the first body and the second body.

11. The battery device according to claim 9, characterized in that: The first limiting member includes a first limiting plate, and the second limiting member includes two second limiting plates, the two second limiting plates are spaced apart to form a gap, the first limiting plate is arranged in the gap, and the two sides of the first limiting plate are respectively abutted against the two second limiting plates to limit the clockwise and counterclockwise rotation of the first body relative to the second body.

12. The battery device according to claim 3, characterized in that: The sampling terminal assembly further includes a third sampling terminal, the wiring harness further includes a third wiring harness, the crimping portion of the third sampling terminal is electrically connected to the signal acquisition module through the third wiring harness, the first connecting portion, the second connecting portion, and the connecting portion of the third sampling terminal are connected and installed on the conductive connector, and the third sampling terminal is provided with a third opening and a third elastic buckle; The third opening is engaged with the second elastic buckle or the first elastic buckle; or, The third elastic buckle is snap-fitted to the first opening or the second opening.

13. The battery device according to any one of claims 1 to 12, characterized in that: The first connection portion is provided with a protruding section, the conductive connection piece is provided with a mounting hole, the protruding section is clamped in the mounting hole, and the second connection portion of the sampling terminal is provided on a side of the first connection portion of the sampling terminal away from the conductive connection piece.

14. The battery device according to claim 1, characterized in that: The relay comprises a positive relay and a negative relay, and the number of the conductive connecting members is multiple. The two ends of the positive relay are electrically connected to the positive electrode of the battery cell group and the positive output end of the high-voltage box through the conductive connecting members; the two ends of the negative relay are electrically connected to the negative electrode of the battery cell group and the negative output end of the high-voltage box through the conductive connecting members, and each of the conductive connecting members is electrically connected to a sampling terminal assembly.

15. An electrical equipment, characterized in that: The electrical equipment comprises an equipment body and the battery device according to any one of claims 1 to 14, wherein the battery device is arranged in the equipment body.

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