Battery device and electric equipment

Abstract

The invention discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a box body, a battery monomer group, conductive connecting pieces, 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, and the two ends of the relay are electrically connected with the conductive connecting pieces respectively; each sampling terminal assembly comprises a sampling wire harness and at least two sampling terminals, each sampling terminal comprises a crimping part and a connecting part which are connected with each other, all the connecting parts of one sampling terminal assembly are connected and installed on a conductive connecting piece, and the sampling wire harness is electrically connected with the crimping part and the signal acquisition module. And the signal acquisition module is electrically connected with the battery management module. The manufacturing efficiency of the battery device can be improved, the occupied space is reduced, and the manufacturing cost of the conductive connecting piece is reduced.

Description

Technical Field

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

[0002] The data collection of the battery cell group in the power battery is mainly done by electrically connecting the output pole of the battery cell group and the sampling terminal through a conductive connector, and then transmitting the signal through the sampling harness and finally transmitting it to the battery management module. In the related technology, the installation of the sampling terminal structure is relatively cumbersome, the assembly consumes time, and reduces production efficiency. Summary of the invention

[0003] The main purpose of the present application is to provide a battery device and an electrical device, aiming to at least improve the technical problem that the installation of the sampling terminal in the battery device consumes time and leads to low production efficiency.

[0004] According to some embodiments of the present application, the present application provides a battery device, including a case, a battery cell group, a conductive connector, a high-voltage box, a signal acquisition module and a battery management module, the case is provided with a accommodating chamber and a high-voltage chamber, the battery cell group is arranged in the accommodating chamber, the high-voltage box is arranged in the high-voltage chamber, a relay and at least one sampling terminal assembly are arranged in the high-voltage box, the two ends of the relay are respectively electrically connected to the conductive connector, each of the sampling terminal assemblies includes a sampling harness and at least two sampling terminals, each of the sampling terminals includes a crimping portion and a connecting portion connected to each other, all the connecting portions of a sampling terminal assembly are connected and installed on a conductive connector, the sampling 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 the sampling terminal assembly to include a sampling harness and at least two sampling terminals, each sampling terminal includes a crimping portion and a connecting portion connected to each other, and all the connecting portions of each sampling terminal are connected and installed on a conductive connector. During production, the connecting portions of the sampling terminals can be pre-connected together and then installed together on a sampling point of the conductive connector, which can simplify the production process and improve the production efficiency of the battery device. In addition, the connecting portions of multiple sampling terminals are all installed on a sampling point, which can reduce the number of sampling points arranged on the conductive connector, thereby reducing the area of ​​the required conductive connector, which plays a role in reducing space occupation and reducing the production cost of the conductive connector.

[0006] In some embodiments, the relay includes a positive relay and a negative relay, and 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 conductive connectors; 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 conductive connectors, and each conductive connector is electrically connected to a sampling terminal assembly.

[0007] By setting the two ends of the positive relay to be electrically connected to the positive electrode of the battery cell group and the positive output end of the high-voltage box through conductive connectors, and the two ends of the negative relay to be electrically connected to the negative electrode of the battery cell group and the negative output end of the high-voltage box through conductive connectors, and each conductive connector is electrically connected to a sampling terminal assembly, signals can be collected from both ends of each relay to achieve 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 wiring harness includes a first wiring harness and a second wiring 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 wiring harness, the second crimping portion is electrically connected to the signal acquisition module through the second wiring harness, the first connecting portion and the second connecting portion are clamped and installed on the conductive connector.

[0009] By snapping the connecting parts of each sampling terminal together and then installing them on a conductive connector, the installation process of the sampling terminal can be simplified, the assembly efficiency can be improved, and the crimping parts of each sampling terminal can be independently transmitted through a wiring harness to reduce the possibility of mutual interference between signals.

[0010] In some embodiments, the first connecting portion is provided with a first connecting hole and a snap-on portion, the second connecting portion is provided with a second connecting hole and a snap-on position, the snap-on portion is snap-on with the snap-on position, the first connecting hole and the second connecting hole are provided correspondingly, and the battery device further includes a fastener, the fastener passes through the second connecting hole and the first connecting hole to install the second connecting portion and the first connecting portion on the conductive connecting member.

[0011] By providing a first connecting hole and a clamping part on the first connecting part, and providing a second connecting hole and a clamping position on the second connecting part, the first connecting hole and the second connecting hole are provided for fasteners to lock the connecting parts on the conductive connecting part, and the clamping part and the clamping position are used for clamping to achieve pre-installation of the first connecting part and the second connecting part, which is convenient for installing the connecting parts on the conductive connecting part and can achieve clamping of the connecting parts.

[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 the first body and the second body to be both annular, the first connecting hole and the second connecting hole respectively formed in an annular shape are correspondingly arranged, so that the two connecting parts can be fixed from the middle position by fasteners, and the clamping part and the clamping position are arranged at the edge position, thereby reducing the possibility of interference between the fastener and the clamping part or the clamping position.

[0020] In some embodiments, a first limiting member is further disposed on the first connection portion, and a second limiting member is disposed on the second connection portion. 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.

[0021] By providing the first limiting member and the second limiting member, the space for relative rotation of the first body and the second body can be limited, or the first body and the second body can be prevented from rotating relative to each other, thereby improving the reliability of the connection.

[0022] In some embodiments, 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, 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 so as to be able to limit the first body from rotating clockwise or counterclockwise 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 arranging the first limiting plates and the second limiting plates alternately, the relative rotation of the first body and the second body can be restricted from multiple points, thereby 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 number of the second limiting plates are both two, 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.

[0025] By setting the number of the first limiting plates and the second limiting plates to be two, the two groups of the first limiting plates and the second limiting plates are in abutment with each other at the same time, which can play a blocking role at the two abutment points at the same time, thereby 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 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.

[0027] By arranging the elastic buckle, the opening, the first limiting member and the second limiting member on the same arc, a torque to prevent relative rotation can be applied from the tangent direction of the arc, thereby improving the reliability of the connection.

[0028] In some embodiments, a side of the first limiting plate away from the first body is further provided with an extension end extending in the direction of the first connecting hole, the first limiting plate, the extension 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.

[0029] By arranging the extended end on the first limiting plate, the risk of the second body falling off can be reduced and the reliability of the connection can be improved.

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

[0031] By arranging 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 arranged in the gap, and the two sides of the first limiting plate are respectively abutted against the two second limiting plates to be able to limit the clockwise and counterclockwise rotation of the first body relative to the second body.

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

[0034] In some embodiments, the first connection portion is provided with an extension section, the conductive connection member is provided with a mounting hole, the extension section is snap-connected to 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 member.

[0035] By arranging the cooperation between the protruding end and the mounting hole, the role 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 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

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0038] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application; Figure 2 A schematic diagram of the exploded structure of a battery device according to some embodiments of the present application; Figure 3 A schematic diagram of the connection relationship between a battery cell group, a high-voltage box, a conductive connector and a vehicle body in some embodiments of the present application; Figure 4 A schematic diagram of a three-dimensional structure showing a first sampling terminal and a second sampling terminal of a battery device in some embodiments of the present application being engaged from one perspective; Figure 5 A schematic diagram of a three-dimensional structure of a battery device according to some embodiments of the present application showing the first sampling terminal and the second sampling terminal being engaged with each other from another perspective; Figure 6 It is a schematic diagram of the structure of a conductive connector and a sampling terminal assembly in the related art; Figure 7 This is a schematic diagram of the structure of the conductive connector and the sampling terminal assembly of the battery device in some embodiments of the present application; Figure 8 A schematic structural diagram of a first sampling terminal of a battery device according to some embodiments of the present application from one perspective; Fig. 9 A schematic structural diagram of a first sampling terminal of a battery device according to some embodiments of the present application from another perspective; Fig.10 A schematic structural diagram of a second sampling terminal of a battery device according to some embodiments of the present application from one perspective; Fig.11 This is a schematic structural diagram of the second sampling terminal of the battery device according to some embodiments of the present application from another perspective.

[0039] Description of Figure Numbers: 1000. Vehicles; 100, battery device; 200, controller; 300, motor; 10. Box body; 11. Upper cover; 12. Box body; 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.

[0040] 2. First sampling terminal; 21. First connecting part; 210. Snap-fit ​​part; 211. First body; 212. First connecting hole; 213. First elastic snap-fit ​​part; 214. First opening; 215. Extended section; 22. First crimping part; 3. Second sampling terminal; 31. Second connecting part; 310. Snap-fit ​​position; 311. Second body; 3112. Protruding end; 312. Second connecting hole; 313. Second elastic snap-fit ​​part; 314. Second opening; 32. Second crimping part; 4. Sampling harness; 41. First harness; 42. Second harness; 5. Conductive connector; 52. Mounting hole; 6. Fastener; 7. First limit plate; 8. Second limit plate; 9. Extended end; 101. Snap-fit ​​groove.

[0041] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] It should be noted that all directional indications in this embodiment (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory 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 here are only used to explain this application and are not used to limit this application.

[0047] The descriptions of directions such as "up", "down", "front", "back", "left" and "right" in this application are based on the directions shown in the drawings and are only used to explain the relative positional relationship between the components in the postures shown in the drawings. If the specific posture changes, the directional indication will also change accordingly.

[0048] At present, from the perspective of market development, 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 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 power batteries, the market demand is also constantly expanding. The sampling terminal is used in the power battery for signal sampling, which leads to low production efficiency of the battery device.

[0049] After careful research, the applicant found that in the high-voltage box of the battery device, a sampling terminal will be set to connect with the conductive connector. The conductive connector can be a bar, and the sampling terminal collects signals from both ends of the relay. Specifically, a sampling terminal assembly includes a wiring harness and multiple sampling terminals. Multiple sampling terminals will be connected to a conductive connector, and multiple sampling points will be set on the conductive connector accordingly, and 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 the risk of wrong wiring due to the large number of sampling points and sampling terminals.

[0050] To this end, the present application provides a battery device, including a box, a battery cell group, a conductive connector, a high-voltage box, a signal acquisition module and a battery management module, the box is provided with a receiving chamber and a high-voltage chamber, the battery cell group is provided in the receiving chamber, the high-voltage box is provided in the high-voltage chamber, a relay and at least one sampling terminal assembly are provided in the high-voltage box, the two ends of the relay are respectively electrically connected with conductive connectors, each sampling terminal assembly includes a sampling harness and at least two sampling terminals, each sampling terminal includes a crimping portion and a connecting portion connected to each other, all connecting portions of a sampling terminal assembly are connected and installed on a conductive connector, the sampling 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. By setting the sampling terminal assembly to include a sampling harness and at least two sampling terminals, each sampling terminal includes a crimping portion and a connecting portion connected to each other, all connecting portions of a sampling terminal assembly are connected and installed on a conductive connector, the connecting portions of the sampling terminals can be pre-connected together during production, and then installed together at a sampling point of the conductive connector, which can simplify the production process and improve the production efficiency of the battery device. Furthermore, the connection parts of the plurality of sampling terminals are all installed at one sampling point, which can reduce the number of sampling points arranged on the conductive connector, thereby reducing the area of ​​the required conductive connector, thereby reducing space occupation and reducing the manufacturing cost of the conductive connector.

[0051] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The electrical equipment may be a vehicle 1000, and 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 starting, navigation and driving.

[0052] 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.

[0053] Please refer to Figure 2 , Figure 2Schematic diagram of the exploded structure of the battery device 100 provided in some embodiments of the present application. The battery device 100 includes a box body 10 and a battery cell, and the battery cell is contained in the box body 10. Among them, the box body 10 is used to provide a storage space for the battery cell, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include an upper cover 11 and a box body 12, and the upper cover 11 and the box body 12 cover each other, and the upper cover 11 and the box body 12 jointly define a storage space for accommodating the battery cell. 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 a storage space; the upper cover 11 and the box body 12 can also 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 in a variety of shapes, such as a cylinder, a cuboid, etc.

[0054] The battery device 100 mentioned in the embodiment of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0055] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0056] As an example, the battery cell assembly may be a battery cell group 20, wherein a plurality of battery cells are arranged and fixed to form an independent module. As an example, the battery cell group 20 may be formed by bundling a plurality of battery cells by a cable tie.

[0057] In some embodiments, the battery device 100 may be a battery pack, which includes a case 10 and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case 10 .

[0058] As an example, the battery cell assembly may be a battery cell group 20 , and the battery cell assembly may be accommodated in the case 10 by fixing the battery cell group 20 in the case 10 .

[0059] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing a plurality of battery cells to the case 10 .

[0060] In the battery device 100, there may be multiple battery cells, which may be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells may be accommodated in the box 10; of course, the battery device 100 may also be a battery module formed by connecting multiple battery cells in series, in parallel, or in a mixed connection, and then the multiple battery modules may be connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between multiple battery cells.

[0061] Each battery cell may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell may be cylindrical, flat, rectangular, or in other shapes.

[0062] Reference 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 connector 5, a high-voltage box 30, a signal acquisition module 40 and a battery management module. The box body 10 is provided with a accommodating chamber and a high-voltage chamber. The battery cell group 20 is arranged in the accommodating chamber, and the high-voltage box 30 is arranged in the high-voltage chamber. A relay and at least one sampling terminal assembly are arranged in the high-voltage box 30. The two ends of the relay are respectively electrically connected with the conductive connector 5. Each sampling terminal assembly includes a sampling harness 4 and at least two sampling terminals. Each sampling terminal includes a crimping portion and a connecting portion connected to each other. All connecting portions of a sampling terminal assembly are connected and installed on a conductive connector 5. The sampling harness 4 is electrically connected to the crimping portion and the signal acquisition module 40. The signal acquisition module 40 is electrically connected to the battery management module.

[0063] The battery cell group 20 includes a plurality of battery cells. The number of battery cell groups 20 in the box 10 may be one or more. The battery cell groups 20 are connected in series or in parallel to form an output pole, which is electrically connected to the relay in the high-voltage box 30. The other end of the relay is electrically connected to the output port of the high-voltage box 30, and the output port can be used to connect to the vehicle body 70. Specifically, a conductive connector 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, and the sampling terminal assembly is used to electrically connect to the conductive connector 5 to obtain 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 corresponds to one conductive connector 5. The sampling harness 4 electrically connects 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 connecting 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 harness 4. The signal acquisition module 40 can realize signal acquisition, processing and conversion, and send the converted signal to the battery management module, so as to realize real-time monitoring of the battery cell group 20 by the battery management module.

[0064] The conductive connecting member 5 here can be a copper bar, or a bar sheet. Figure 6 Generally, sampling points of sampling terminals are set on the copper bus. The number of sampling points is consistent with the number of sampling terminals. If there are two sampling terminals, two sampling points are set. The sampling points are the positions connected to the sampling terminals set on the conductive connector 5. The sampling terminals are set in a one-to-one correspondence with the sampling points, and a sampling terminal is set at each sampling point. In the solution of the present application, the sampling terminal assembly includes a wiring harness and at least two sampling terminals. Figure 7 , also taking the case where there are two sampling terminals as an example, each sampling terminal includes a crimping portion and a connecting portion, the two connecting portions are connected to each other and electrically connected to a sampling point, and the two crimping portions are respectively connected to the wiring harness, where the two crimping portions are respectively connected to the wiring harness, so the signal transmission 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 portions of the three sampling terminals can also be connected together. Or the sampling terminals can be grouped, such as when the number of sampling terminals is five, they can be divided into two groups, one group is the connecting portions of two sampling terminals connected together, and the other group is the connecting portions of three sampling terminals connected together. Of course, ordinary terminals can also be included. For ordinary terminals, one ordinary terminal is electrically connected to one sampling point, and only one ordinary terminal is set at one sampling point.

[0065] During production, the two connecting parts can be spliced ​​together in advance, such as the sampling terminals with the pre-spliced ​​connecting parts connected to each other that 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 making the high-voltage box 30, and also improve the production efficiency of the battery device 100. In addition, the technical solution of the present application can reduce the number of sampling points on the copper bar and reduce the area of ​​the required copper bar, thereby simplifying the manufacturing process of the copper bar, reducing space occupancy and reducing the manufacturing cost of the copper bar. It should also be noted that the method of pre-assembling the connecting parts also has an anti-foolproof function, which can reduce the risk of wrong wiring due to excessive installation of the sampling terminals and sampling points, or overly tight production.

[0066] By setting the sampling terminal assembly to include a sampling harness 4 and at least two sampling terminals, each sampling terminal includes a crimping portion and a connecting portion connected to each other, and all the connecting portions of a sampling terminal assembly are connected and installed on a conductive connector 5, the connecting portions of the sampling terminals can be pre-connected together during production, and then installed together on a sampling point of the conductive connector 5, which can simplify the production process and improve the production efficiency of the battery device 100. In addition, the connecting portions 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, thereby reducing the area of ​​the required conductive connector 5, thereby reducing the space occupied and reducing the production cost of the conductive connector 5.

[0067] In some embodiments, the relay includes a positive relay 50 and a negative relay 60, and the two ends of the positive relay 50 are electrically connected to the positive electrode 201 of the battery cell group 20 and the positive output terminal 301 of the high-voltage box 30 through the conductive connector 5; the two ends of the negative relay 60 are electrically connected to the negative electrode 202 of the battery cell group 20 and the negative 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.

[0068] The number of battery cell groups 20 can be one or more. Multiple battery cell groups 20 are connected in series or in parallel and finally output from two output poles, which are respectively a positive pole 201 and a negative pole 202. At least two relays are arranged in the high-voltage box 30, which are respectively a positive relay 50 and a 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 another two different conductive connectors 5. A sampling terminal assembly is respectively connected to each conductive connector 5, that is, the number of sampling terminal assemblies is four, and the connection position of the connection part of the sampling terminal is the two ends of the relay. Figure 3 In the example, samples are collected from four positions A1, A2, A3 and A4 on the conductive connector 5. The wiring harnesses of the four sampling terminal assemblies are all connected to the signal acquisition module 40, so that the signals of each conductive connector 5 connected to the relay in the high-voltage box 30 can be collected, and the real-time monitoring of the parameter information of the battery cell group 20 can be realized.

[0069] By setting the two ends of the positive relay 50 to be electrically connected to the positive electrode 201 of the battery cell group 20 and the positive output terminal 301 of the high-voltage box 30 through the conductive connecting member 5, and the two ends of the negative relay 60 to be electrically connected to the negative electrode 202 of the battery cell group 20 and the negative output terminal 302 of the high-voltage box 30 through the conductive connecting member 5, and each conductive connecting member 5 is electrically connected to a sampling terminal assembly, and signals can be collected from the two ends of each relay respectively, so as to realize real-time monitoring of various parameter information of the battery cell group 20.

[0070] Reference 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 harness 4 includes a first harness 41 and a second harness 42, the first sampling terminal 2 includes a first connecting portion 21 and a first crimping portion 22, the second sampling terminal 3 includes a second connecting portion 31 and a second crimping portion 32, the first crimping portion 22 is electrically connected to the signal acquisition module 40 through the first harness 41, the crimping portion of the second sampling terminal 3 is electrically connected to the signal acquisition module 40 through the second harness 42, the first connecting portion 21 and the second connecting portion 31 are clamped and installed on the conductive connector 5.

[0071] A sampling terminal assembly may include at least two sampling terminals, that is, the number of sampling terminals may be two, three, four or more. For ease of description, this embodiment specifically describes the structure and connection relationship of the sampling terminal 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 that two is a preferred solution. Specifically, when the number of sampling terminals is two, the number of crimping parts and connecting parts are also two. At this time, the two connecting parts of the two sampling terminals are connected together and installed together at the same sampling point of the conductive connector 5. The crimping parts do not interfere with each other. The first crimping part 22 is electrically connected to the signal acquisition module 40 through the first wiring harness 41, and the crimping part of the second sampling terminal 3 is electrically connected to the signal acquisition module 40 through the second wiring harness 42. The first wiring harness 41 and the second wiring harness 42 are routed separately and transmit signals independently, and the signals of the two will not interfere with each other. As for the connection method of the crimping part and the connecting part, it can be splicing, card connection, fixed connection or other connection methods, which are not specifically limited in this application. The card connection can facilitate installation and disassembly.

[0072] By snapping the connecting parts of each sampling terminal together and then installing them on the conductive connector 5, the installation process of the sampling terminal can be simplified, the assembly efficiency can be improved, and the crimping parts of each sampling terminal can be independently transmitted through the wiring harness to reduce the possibility of mutual interference between signals.

[0073] Reference Figure 4 and Figure 7 In some embodiments, the first connecting portion 21 is provided with a first connecting hole 212 and a snap-on portion 210, the second connecting portion 31 is provided with a second connecting hole 312 and a snap-on position 310, the snap-on portion 210 is snap-on with the snap-on position 310, the first connecting hole 212 and the second connecting hole 312 are correspondingly arranged, and the battery device 100 also includes a fastener 6, which passes through the second connecting hole 312 and the first connecting hole 212 to install the second connecting portion 31 and the first connecting portion 21 on the conductive connecting member 5.

[0074] The first connecting hole 212 and the second connecting hole 312 are both through holes and are correspondingly arranged. In a specific embodiment, the first connecting hole 212 and the second connecting hole 312 are concentrically arranged and have the same size. A connecting hole is also correspondingly arranged at the sampling point of the conductive connector 5, so that the fastener 6 can pass through the second connecting hole 312. The first connecting hole 212 is installed on the connecting hole to fix the first connecting part 21 and the second connecting part 31 on the conductive connector 5. The fastener 6 here can be a screw or a rivet. The first connecting 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 connecting 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, so that the first connecting part 21 and the second connecting part 31 are clamped together by the clamping position 310 and the clamping part 210.

[0075] By providing a first connecting hole 212 and a snap-fitting portion 210 on the first connecting portion 21, and providing a second connecting hole 312 and a snap-fitting position 310 on the second connecting portion 31, the first connecting hole 212 and the second connecting hole 312 are provided for the fastener 6 to lock each connecting portion on the conductive connecting member 5, and the snap-fitting portion 210 and the snap-fitting position 310 are used for snapping to realize the pre-installation of the first connecting portion 21 and the second connecting portion 31, which is convenient for installing each connecting portion on the conductive connecting member 5 and can realize the snap-fitting of each connecting portion.

[0076] In some embodiments, the snap-fitting portion 210 is provided with a first opening 214, the snap-fitting position 310 is provided with a second elastic snap 313, and the second elastic snap 313 is snap-fitted with the first opening 214; or, the snap-fitting portion 210 is provided with a first elastic snap 213, the snap-fitting position 310 is provided with a second opening 314, and the first elastic snap 213 is snap-fitted with the second opening 314.

[0077] Regarding the specific form of the clamping of the clamping portion 210 and the clamping position 310, it can be that a first opening 214 is provided on the clamping portion 210, and a second elastic buckle 313 is provided on the clamping position 310, and the clamping of the two connecting portions is achieved by 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 portion 210, and a second opening 314 is provided on the clamping position 310, and the clamping of the two connecting portions is achieved by the clamping of the first elastic buckle 213 and the second opening 314. In actual production, the connecting portion and the crimping portion are generally made of thinner metal with a certain elastic margin, and the first elastic buckle 213 and the second elastic buckle 313 here can be elastic sheets.

[0078] 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.

[0079] Reference Figure 4 , Figure 8 and Fig.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.

[0080] 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.

[0081] 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.

[0082] 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 40 through the third wiring harness, the first connecting portion 21, the second connecting portion 31, and the connecting portion of the third sampling terminal are connected and installed on the conductive connector 5, 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 313 or the first elastic buckle 213; or, the third elastic buckle is clamped with the first opening 214 or the second opening 314.

[0083] Continuing from the above embodiment, when the number of sampling terminals is three, the third opening of the third sampling terminal can be snapped with the unconnected second elastic buckle 313, or the third opening of the third sampling terminal can be snapped with the first elastic buckle 213; the third elastic buckle of the third sampling terminal can be snapped with the first opening 214, or the third elastic buckle of the third sampling terminal can be snapped with the second opening 314, thereby achieving three connection parts firmly snapped together and installed at a sampling point of the conductive connector 5. Of course, the sampling harness 4 also includes a third harness to reduce the risk of signal interference.

[0084] 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 snapped together and provided at the same sampling point of the conductive connector 5 .

[0085] Reference Figure 4 , Figure 8 and Fig.10 In some embodiments, the first connecting portion 21 includes a first body 211 and a snap-on portion 210, the second connecting portion 31 includes a second body 311 and a snap-on position 310, the first body 211 and the second body 311 are both annular, the first body 211 surrounds a first connecting hole 212, and the snap-on portion 210 is arranged at the outer edge of the first body 211; the second body 311 surrounds a second connecting hole 312, and the snap-on position 310 is arranged at the outer edge of the second body 311.

[0086] The first body 211 and the second body 311 can be similar in shape, roughly annular, and substantially equal in size. The inner circle of the annular shape of the first body 211 is the first connecting hole 212, and the inner circle of the annular shape of the second body 311 is the second connecting hole 312. The first connecting hole 212 and the second connecting hole 312 are substantially the same in size and are arranged nearly concentrically, which is convenient for installing 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.

[0087] By setting the first body 211 and the second body 311 to be annular, the first connecting hole 212 and the second connecting hole 312 respectively formed in annular shapes are correspondingly arranged, so that the two connecting parts can be fixed from the middle position by the fastener 6, and the clamping part 210 and the clamping position 310 are arranged at the edge position, thereby reducing the possibility of interference between the fastener 6 and the clamping part 210 or the clamping position 310.

[0088] Reference Figure 4 and Figure 5 In some embodiments, 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 rotation of the first body 211 relative to the second body 311 .

[0089] As described above, the elastic buckle and the opening can be provided to snap the connection parts together, and the connection parts can be fixed to the conductive connection part 5 by the fastener 6. However, during the use or transportation of the battery device 100, the wiring harness may move. In actual use, there is a large amount of movement between the connection parts, and relative rotation is particularly prone to occur, which reduces the reliability of the connection. To this end, a first limiter and a second limiter are respectively provided on the first connection part 21 and the second connection part 31. Between the connection parts, or when the first body 211 and the second body 311 are about to rotate relative to each other or rotate a very small distance relative to each other, the first limiter and the second limiter abut against each other in the rotation direction, which can reduce the possibility of the connection parts continuing to rotate relative to each other.

[0090] By providing the first limiting member and the second limiting member, the space for relative rotation of the first body 211 and the second body 311 can be limited, or the first body 211 and the second body 311 can be prevented from rotating relative to each other, thereby improving the reliability of the connection.

[0091] Reference Figure 4 and Figure 5 In some embodiments, the first limiting member includes at least two first limiting plates 7 that are spaced apart, and the second limiting member includes at least two second limiting plates 8 that are spaced apart. At least two first limiting plates 7 and at least two second limiting plates 8 are alternately arranged and located on the same circle, so as to limit the clockwise or counterclockwise rotation of the first body 211 relative to the second body 311.

[0092] At least two first limit plates 7 can be arranged on the outer edge of the first body 211, and at least two second limit plates 8 can also be arranged on the outer edge of the second body 311. The first limit plates 7 and the second limit 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 the first body 211 has a tendency to rotate relative to the second body 311, the first limit plates 7 and the second limit plates 8 will abut against each other to prevent the first body 211 and the second body 311 from rotating clockwise or counterclockwise relative to each other. Here, the number of the first limit plates 7 and the second limit plates 8 is set to at least two, so that restrictions can be made from multiple points to improve the reliability of the connection. Of course, the first limit plates 7 and the second limit plates 8 are respectively arranged at the edge positions of the first body 211 and the second body 311 to increase the torque to prevent rotation and further enhance the effect of limiting rotation.

[0093] By setting the number of the first limiting plates 7 and the second limiting plates 8 to be at least two, and the first limiting plates 7 and the second limiting plates 8 are arranged alternately, the relative rotation of the first body 211 and the second body 311 can be restricted from multiple points, thereby improving the reliability of the connection of the connecting part and reducing the risk of loosening of the sampling terminal.

[0094] Reference Figure 4 and Figure 5 In some embodiments, the number of the first limiting plates 7 and the number of the second limiting plates 8 are both two, and when one first limiting plate 7 abuts against one of the second limiting plates 8, the other limiting plate abuts against the other second limiting plate 8.

[0095] There are two first limit plates 7 and two second limit plates 8. When one set of first limit plates 7 and second limit plates 8 are in contact, the other set of first limit plates 7 and second limit plates 8 are also in contact at the same time. In this way, limiting torques in the same direction are provided to the first body 211 and the second body 311 from two positions, thereby preventing the first body 211 and the second body 311 from rotating clockwise or counterclockwise relative to each other.

[0096] By setting the number of the first limit plates 7 and the second limit plates 8 to be two, the two groups of the first limit plates 7 and the second limit plates 8 are in abutment with each other at the same time, which can play a blocking role at the two abutment points at the same time, thereby improving the reliability of the connection.

[0097] Reference Figure 8 and Fig.10In some embodiments, the first elastic buckle 213, the first opening 214, and the two first limiting plates 7 are all located on the same arc with the center of the first connecting hole 212 as the center; the second elastic buckle 313, the second opening 314, and the two second limiting plates 8 are all located on the same arc with the center of the second connecting hole 312 as the center, and the first connecting hole 212 and the second connecting hole 312 are concentrically arranged.

[0098] Specifically, the first connecting hole 212 and the second connecting hole 312 are concentrically arranged, and the radius of the two arcs is the same. In other words, 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 arc, so that the same torque can be applied in the same direction of the arc to limit the relative rotation of the first body 211 and the second body 311.

[0099] By arranging the elastic buckle, the opening, the first limiting member and the second limiting member on the same arc, a torque to prevent relative rotation can be applied from the tangent direction of the arc, thereby improving the reliability of the connection.

[0100] Reference Figure 8 and Fig. 9 In some embodiments, a side of the first limiting plate 7 away from the first body 211 is further provided with an extension end 9 extending toward the first connecting hole 212, and the first limiting plate 7, the extension end 9 and the first body 211 are configured in cooperation with each other to form a second body 311, a portion of the second body 311 is disposed in the snap-fit ​​groove 101, the first connecting portion 21 is mounted on the conductive connecting member 5, and the second connecting portion 31 is snap-fitted 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 extension end 9 may 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 snap-fit ​​groove 101 for snap-fitting the third body of the third sampling terminal.

[0101] The first limit plate 7 is provided with an extension end 9, and the first limit plate 7 and the extension end 9 together form a bending structure, the bending direction is toward the direction of the first connecting hole 212, the bending structure cooperates with the first body 211 to form a clamping groove 101, and the second body 311 is partially provided in the clamping groove 101, and the bottom surface of the extension 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 connection parts of the two sampling terminals can be connected and then installed on the sampling point of the conductive connector 5, so that the method of pre-connecting the connection parts can improve production efficiency.

[0102] By providing the protruding 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.

[0103] Reference Fig.10 and Fig.11 In some embodiments, a protruding end 3112 is provided on the second body 311 , and the protruding end 3112 is located in the snap-fit ​​groove 101 . The protruding end 3112 is used to abut against the groove wall of the snap-fit ​​groove 101 to limit the relative rotation of the first body 211 and the second body 311 .

[0104] The protruding end 3112 is provided on the second body 311, and 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, 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 other embodiments, the protruding end 3112 can also be provided on the first body 211.

[0105] 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 improve the reliability of the connection.

[0106] 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 spaced apart to form a gap. The first limiting plate 7 is arranged in the gap, and the two sides of the first limiting plate 7 are respectively abutted against the two second limiting plates 8 to limit the clockwise and counterclockwise rotation of the first body 211 relative to the second body 311.

[0107] In this embodiment, there is only one first limiting plate 7. When the first connecting portion 21 and the second connecting portion 31 are snapped together, the first limiting plate 7 is located between the two second limiting plates 8. There is no space between the two sides of the first limiting plate 7 and the two second limiting plates 8, or there is only a small gap. In this way, when the first body 211 and the second body 311 rotate clockwise relative to each other, 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 clockwise relative to each other, the other side of the first limiting plate 7 will abut against the other second limiting plate 8 to limit the counterclockwise rotation, thereby limiting the clockwise and counterclockwise rotation of the first body 211 relative to the second body 311.

[0108] By disposing a first limiting plate 7 between the two second limiting plates 8 , the relative rotation between the first body 211 and the second body 311 can be limited, thereby improving the reliability of the connection.

[0109] Reference Figure 7 and Figure 8 In some embodiments, an extension section 215 is provided on the first connection portion 21, a mounting hole 52 is provided on the conductive connection member 5, the extension section 215 is snapped into the mounting hole 52, and the second connection portion 31 of the sampling terminal is provided on a side of the first connection portion 21 of the sampling terminal away from the conductive connection member 5.

[0110] The first sampling terminal 2 here refers to the sampling terminal located at the bottom, and is also the sampling terminal directly installed on the conductive connector 5. The protruding end 9 and the mounting hole 52 on the conductive connector 5 can play a positioning role as well as a mounting role, so as to facilitate further fixation by the fastener 6 later.

[0111] By arranging the cooperation between the protruding end 9 and the mounting hole 52, the role of positioning and preliminary installation can be achieved.

[0112] According to some embodiments of the present application, the present application provides a battery device 100, a box body 10, a battery cell group 20, a conductive connector 5, a high-voltage box 30, a signal acquisition module 40 and a battery management module, the box body 10 is provided with a accommodating chamber and a high-voltage chamber, the battery cell group 20 is arranged in the accommodating chamber, the high-voltage box 30 is arranged in the high-voltage chamber, a relay and at least one sampling terminal assembly are arranged in the high-voltage box 30, both ends of the relay are electrically connected with a conductive connector 5, each sampling terminal assembly includes a sampling harness 4 and at least two sampling terminals, each sampling terminal includes a crimping portion and a connecting portion connected to each other, all connecting portions of a sampling terminal assembly are connected and installed on a conductive connector 5, the sampling 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 harness 4 includes a first harness 41 and a second harness 42, the first crimping portion 22 is electrically connected to the signal acquisition module 40 through the first harness 41, the crimping portion of the second sampling terminal 3 is electrically connected to the signal acquisition module 40 through the second harness 42, the first connecting portion 21 includes a first body 211 and a clamping portion 210, the second connecting portion 31 includes a second body 311 and a clamping position 310, the first body 211 and the second body 31 1 are both annular, the first body 211 surrounds the first connecting hole 212, and the clamping portion 210 is arranged at the outer edge of the first body 211; the second body 311 surrounds the second connecting hole 312, and the clamping position 310 is arranged at the outer edge of the second body 311. The first connecting hole 212 and the second connecting hole 312 are arranged correspondingly, and the battery device 100 also includes a fastener 6, which passes through the second connecting hole 312 and the first connecting hole 212 to install the second connecting portion 31 and the first connecting portion 21 on the conductive connector 5. In a further embodiment, a first limit member is further provided on the first connection portion 21, and a second limit member is provided on the second connection portion 31. The first limit member and the second limit member can abut against each other to limit the rotation of the first body 211 relative to the second body 311. A protruding end 9 extending toward the first connecting hole 212 is also provided on the side of the first limit plate 7 away from the first body 211. The first limit plate 7, the protruding end 9 and the first body 211 are cooperated to form a snap-in groove 101. The second body 311 is partially arranged in the snap-in groove 101. The first connection portion 21 is installed on the conductive connecting member 5, and the second connection portion 31 is snap-connected to the first connection portion 21. A protruding end 3112 is provided on the second body 311. The protruding end 3112 is located in the snap-in groove 101. The protruding end 3112 is used to abut against the protruding 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, reducing the risk of incorrect connection of sampling terminals, saving copper bars, and reducing occupied space.

[0113] According to some embodiments of the present application, the present application provides an electric device, which includes an equipment body and the above-mentioned battery device 100, and the battery device 100 is arranged in the equipment body. The above-mentioned electric device can be a vehicle 1000. Since the electric device includes any technical solution of all the above-mentioned embodiments, it has at least all the beneficial effects brought by any of the above-mentioned technical solutions, which will not be repeated here one by one.

[0114] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields are 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; The sampling terminal assembly comprises a sampling wire harness and at least two sampling terminals, each of the sampling terminals comprises a crimping portion and a connecting portion connected to each other, and all the connecting portions of a sampling terminal assembly are connected and mounted on a conductive connector; A signal acquisition module, wherein the sampling harness is electrically connected to the crimping portion and the signal acquisition module; 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 at least two sampling terminals include a first sampling terminal and a second sampling terminal, the sampling wiring harness includes a first wiring harness and a second wiring 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 wiring harness, the second crimping portion is electrically connected to the signal acquisition module through the second wiring harness, the first connecting portion and the second connecting portion are clamped and installed on the conductive connector.

3. The battery device according to claim 2, characterized in that: The first connecting part is provided with a first connecting hole and a clamping part, the second connecting part is provided with a second connecting hole and a clamping position, the clamping part is clamped with the clamping position, the first connecting hole and the second connecting hole are arranged correspondingly, and the battery device also includes a fastener, which passes through the second connecting hole and the first connecting hole to install the second connecting part and the first connecting part on the conductive connecting member.

4. The battery device according to claim 3, 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.

5. The battery device according to claim 3, 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.

6. The battery device according to claim 5, 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.

7. The battery device according to claim 6, 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.

8. The battery device according to claim 7, 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.

9. The battery device according to claim 8, 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.

10. The battery device according to claim 9, 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.

11. The battery device according to claim 8, 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.

12. The battery device according to claim 11, 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.

13. The battery device according to claim 7, 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.

14. The battery device according to claim 5, 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.

15. The battery device according to any one of claims 2 to 14, 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.

16. 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.

17. 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 16, wherein the battery device is arranged in the equipment body.

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