Battery device and electric device

Abstract

The application discloses a battery device and an electric device, and belongs to the technical field of batteries. The battery device comprises a circuit board and a first connector. The first connector is mounted on the circuit board. The first connector comprises a shell and a plurality of connecting terminals. The shell is made of insulating material. The plurality of connecting terminals are connected to the shell and are insulated from each other by the shell. Each connecting terminal comprises a first terminal part and a second terminal part which are formed separately. The first terminal part is welded to the circuit board. The second terminal part is electrically connected to the first terminal part and a sampling component. By setting the connecting terminal as the first terminal part and the second terminal part which are formed separately, the first terminal part and the second terminal part are convenient to process. The processing precision of the first terminal part and the second terminal part is convenient to control. The tolerance of the connecting terminal as a whole is reduced. The distance between the plurality of connecting terminals and the circuit board is convenient to control within the range required by welding. The risk of false welding between the connecting terminal and the circuit board is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery device and a power utilization device. BACKGROUND

[0002] Batteries are widely used in the field of new energy, such as electric vehicles, new energy vehicles, etc. New energy vehicles and electric vehicles have become a new trend in the development of the automobile industry. In order to facilitate the management of the battery device, it is necessary to collect the voltage and temperature of each battery monomer in the battery device through a sampling device. The sampling device is electrically connected to the circuit board of the control mechanism through the connecting terminals of the connector. The connecting terminals need to be bent multiple times, and then the tolerance is accumulated at the end of the connecting terminals and the circuit board for welding, so that it is not convenient to control the distance between the connecting terminals and the circuit board, thereby increasing the risk of virtual welding of the connecting terminals and the circuit board, thereby reducing the reliability of the battery device. SUMMARY

[0003] The battery device and the power utilization device provided by the embodiments of the present application can reduce the risk of virtual welding of the connecting terminals and the circuit board, thereby improving the reliability of the battery device.

[0004] In a first aspect, the embodiments of the present application provide a battery device including a circuit board and a first connector; the first connector is mounted on the circuit board, and the first connector includes a housing and a plurality of connecting terminals; the housing is made of insulating material, and the plurality of connecting terminals are connected to the housing and are insulated from each other by the housing; wherein each connecting terminal includes a first terminal piece and a second terminal piece formed separately, the first terminal piece is welded to the circuit board, and the second terminal piece is used to electrically connect the first terminal piece and a sampling assembly.

[0005] In the above technical solution, the connecting terminal includes a first terminal piece and a second terminal piece formed separately, the first terminal piece is welded to the circuit board, and the second terminal piece is electrically connected to the first terminal piece and the sampling assembly, so that the connecting terminal can be electrically connected to the circuit board and the sampling assembly; at the same time, compared with the case where the connecting terminal is integrally formed, the connecting terminal is provided as two parts, and a plurality of structures that need to be bent are arranged in the first terminal piece and the second terminal piece respectively, thereby reducing the number of times that need to be bent on a single part. On the one hand, it is convenient for the processing of the first terminal piece and the second terminal piece; on the other hand, it is convenient to control the processing precision of the first terminal piece and the second terminal piece, thereby reducing the tolerance of the connecting terminal as a whole, so that it is convenient to control the distance between the plurality of connecting terminals and the circuit board to be within the range required for welding, thereby reducing the risk of virtual welding of the connecting terminals and the circuit board, thereby improving the reliability of the battery device.

[0006] In some embodiments, the first terminal piece is in a bent shape, and the second terminal piece is in a straight shape.

[0007] In the above technical solution, the first terminal piece is in a bent shape, and the second terminal piece is in a straight shape, that is, the first terminal piece is formed by one-time bending, and the second terminal piece does not need to be formed by bending, thereby reducing the total number of bending required for the connection terminal, thereby reducing the accumulation of tolerances, thereby further reducing the overall tolerance of the connection terminal, thereby facilitating control of the distance between the plurality of connection terminals and the circuit board within the range required for welding, thereby further reducing the risk of false welding of the connection terminal and the circuit board, thereby improving the reliability of the battery device.

[0008] In some embodiments, the length direction of the second terminal piece intersects the thickness direction of the circuit board.

[0009] In the above technical solution, the length direction of the second terminal piece intersects the thickness direction of the circuit board, thereby causing the second terminal piece to extend in a direction that is not perpendicular to the circuit board, and thereby facilitating the setting of the sampling assembly when the sampling assembly is electrically connected to the second terminal piece, and facilitating the installation of the battery device.

[0010] In some embodiments, the first terminal piece and the second terminal piece abut.

[0011] In the above technical solution, the first terminal piece and the second terminal piece abut, thereby reducing one bending structure of the connection terminal, thereby reducing the total number of bending required for the connection terminal, thereby reducing the accumulation of tolerances, thereby further reducing the overall tolerance of the connection terminal, thereby facilitating control of the distance between the plurality of connection terminals and the circuit board within the range required for welding, thereby further reducing the risk of false welding of the connection terminal and the circuit board, thereby improving the reliability of the battery device.

[0012] In some embodiments, the first terminal piece includes a main body and an elastic portion, the main body is welded to the circuit board, and the elastic portion abuts the second terminal piece.

[0013] In the above technical solution, the elastic portion abuts the second terminal piece, on the one hand, the elastic portion can be elastically deformed to be attached to the peripheral side of the second terminal piece, thereby increasing the abutting area at the abutting portion of the first terminal piece and the second terminal piece, thereby increasing the electrical connection reliability between the first terminal piece and the second terminal piece; on the other hand, when the second terminal piece moves relative to the first terminal piece due to an external force such as a sampling assembly or other components, the elastic portion can elastically deform to maintain the abutment of the first terminal piece and the second terminal piece, thereby increasing the electrical connection reliability between the first terminal piece and the second terminal piece.

[0014] In some embodiments, the elastic part is a cantilever structure with one end connected to the main body.

[0015] In the above technical solution, the elastic part is simple in structure, one end of the elastic part is connected to the main body, the other end of the elastic part is in a suspended state as a free end and is used to abut against the second terminal piece, so that the elastic part and the main body part have a certain space for elastic deformation of the elastic part, thereby facilitating the elastic part to be better attached to the periphery of the second terminal, thereby increasing the abutting area of the abutting place of the first terminal piece and the second terminal piece, thereby increasing the reliability of the electrical connection between the first terminal piece and the second terminal piece.

[0016] In some embodiments, the main body includes a welding part and a connecting part, the welding part is welded with the circuit board, the connecting part is arranged at an angle with the welding part, one end of the connecting part is connected to the welding part, and the elastic part is arranged at the other end of the connecting part.

[0017] In the above technical solution, the connecting part and the welding part are arranged at an angle, one end of the connecting part is connected to the welding part, that is, the main body is in a bent shape, the elastic part is arranged at the other end of the connecting part and is used to abut against the second terminal piece, so that the elastic part can absorb the tolerance caused by the bending of the main body through elastic deformation, thereby further reducing the tolerance of the whole connecting terminal, thereby facilitating the distance between the plurality of connecting terminals and the circuit board to be within the range required for welding, thereby further reducing the risk of virtual welding of the connecting terminal and the circuit board, thereby improving the reliability of the battery device.

[0018] In some embodiments, the length direction of the welding part is perpendicular to the thickness direction of the circuit board, and the length direction of the connecting part is parallel to the thickness direction of the circuit board.

[0019] In the technical solution, the length direction of the welding portion is perpendicular to the thickness direction of the circuit board, so that the welding portion can extend in a direction parallel to the circuit board, thereby increasing the area of the welding portion by extending the length of the welding portion when the width dimension of the welding portion is constant, thereby increasing the connection area of the first terminal member and the circuit board, and further reducing the risk of false welding of the connection terminal and the circuit board, thereby improving the reliability of the battery device; the length direction of the connecting portion is parallel to the thickness direction of the circuit board, so that the connecting portion can extend in the thickness direction of the circuit board, and further so that the second terminal member abutting against the connecting portion can have a certain distance between the circuit board in the thickness direction of the circuit board, thereby giving the sampling assembly a certain installation space, facilitating the electrical connection of the sampling assembly and the second terminal member, and being conducive to simplifying the installation of the battery device, and compared with the case where the length direction of the connecting portion is not parallel to the thickness direction of the circuit board, when the second terminal member can have a certain distance between the circuit board in the thickness direction of the circuit board, the length of the connecting portion is reduced, thereby reducing the material required for the production of the connecting portion and reducing the production cost of the main body.

[0020] In some embodiments, the length direction of the welding portion is parallel to the length direction of the second terminal member.

[0021] In the technical solution, the length direction of the welding portion is parallel to the length direction of the second terminal member, thereby reducing the volume occupied by the first terminal member in the first direction (the first direction, the length direction of the second terminal member, and the thickness direction of the circuit board are perpendicular to each other) compared with the case where the length direction of the welding portion intersects the length direction of the second terminal member, and further reducing the volume occupied by the connection terminal in the first direction, thereby facilitating the arrangement of multiple connection terminals in the first direction.

[0022] In some embodiments, along the thickness direction of the circuit board, the side of the welding portion facing away from the circuit board abuts against the housing.

[0023] In the technical solution, along the thickness direction of the circuit board, the side of the welding portion facing away from the circuit board abuts against the housing, thereby limiting the welding portion of the first terminal member of the multiple connection terminals by the housing, and absorbing the tolerance of the first terminal member in the thickness direction of the circuit board by the elastic portion, so that the side of the welding portion of the multiple connection terminals facing the circuit board is located on the same reference surface, thereby further reducing the risk of false welding of the connection terminal and the circuit board, thereby improving the reliability of the battery device.

[0024] In some embodiments, the housing has a first mounting hole and a second mounting hole, the second mounting hole is in communication with the first mounting hole, the connecting portion is accommodated in the first mounting hole, and a part of the second terminal member is accommodated in the second mounting hole.

[0025] In the technical solution, the second mounting hole is in communication with the first mounting hole, the connecting portion is accommodated in the first mounting hole, and a portion of the second terminal member is accommodated in the second mounting hole, so that the abutting position of the elastic portion and the second terminal member is located in the first mounting hole and the second mounting hole, and the first mounting hole and the second mounting hole protect the elastic portion in structure, thereby reducing the risk that the remaining structural members of the battery device extend between the elastic portion and the second terminal member to cause the first terminal member and the second terminal member to be electrically connected in failure, and improving the reliability of the battery device.

[0026] In some embodiments, an outer surface of the connecting portion forms a limiting protrusion, and the limiting protrusion is in interference fit with the first mounting hole.

[0027] In the technical solution, the limiting protrusion is in interference fit with the second mounting hole, so that the connecting portion is relatively fixed in the axial direction of the second mounting hole relative to the second mounting hole, thereby limiting the movement of the connecting portion in the axial direction of the second mounting hole due to the elastic force generated after the abutting of the elastic portion and the second terminal member, and further reducing the risk that the sides of the welding portions of the plurality of connecting terminals facing the circuit board are not located on the same reference surface due to the movement of the connecting portion in the axial direction of the second mounting hole, thereby further reducing the risk of virtual welding of the connecting terminals and the circuit board, and improving the reliability of the battery device.

[0028] In some embodiments, the plurality of first terminal members are arranged at intervals in a first direction, and an outer surface of the shell protrudes a plurality of blocking portions between adjacent two first terminal members, and the first direction is perpendicular to a thickness direction of the circuit board.

[0029] In the technical solution, the blocking portion is located between adjacent two first terminal members, thereby reducing the risk of internal short circuit of the battery device caused by the abutting of adjacent two first terminal members in the first direction.

[0030] In some embodiments, the plurality of connecting terminals include a plurality of first connecting terminals and a plurality of second connecting terminals, the first connecting terminals and the second connecting terminals are arranged alternately in a first direction, the second terminal members of the plurality of first connecting terminals are arranged in one row, the second terminal members of the plurality of second connecting terminals are arranged in another row, and the two rows of second terminal members are arranged at intervals in a thickness direction of the circuit board, and the first direction is perpendicular to the thickness direction of the circuit board.

[0031] In the technical solution, the second terminal pieces of the plurality of first connecting terminals are arranged in one row, the second terminal pieces of the plurality of second connecting terminals are arranged in another row, and the two rows of second terminal pieces are arranged in the thickness direction of the circuit board, so that the second terminal pieces of the plurality of connecting terminals make full use of the space of the connector in the thickness direction of the circuit board, thereby reducing the size of the connecting piece in the first direction compared with the case that the second terminal pieces of the plurality of connecting terminals are arranged in one row in the first direction.

[0032] In some embodiments, the first terminal piece and the second terminal piece abut in the thickness direction of the circuit board; and the size of the first terminal piece of the first connecting terminal is not equal to the size of the first terminal piece of the second connecting terminal in the thickness direction of the circuit board.

[0033] In the technical solution, the size of the first terminal piece of the first connecting terminal is not equal to the size of the first terminal piece of the second connecting terminal in the thickness direction of the circuit board, so that the first terminal piece of the first connecting terminal and the first terminal piece of the second connecting terminal can respectively abut with the two rows of second terminal pieces arranged in the thickness direction of the circuit board, and the structure is simple and easy to implement.

[0034] In some embodiments, the first connector further comprises a fixing piece connected to the housing, and the fixing piece is welded to the circuit board.

[0035] In the technical solution, the fixing piece is connected to the housing, and the fixing piece is welded to the circuit board, so that the movement of the housing relative to the circuit board is limited by the fixing piece, thereby reducing the risk of connection failure between the first terminal piece and the circuit board caused by the movement of the housing relative to the circuit board due to external force, and improving the reliability of the battery device.

[0036] In some embodiments, the plurality of first terminal pieces are arranged in the first direction, and the fixing piece is provided with two fixing pieces, and the two fixing pieces are respectively located at the two ends of the housing in the first direction.

[0037] In the technical solution, the two fixing pieces are respectively located at the two ends of the housing in the first direction, so that the support force of the fixing piece on the housing is more uniform, thereby further reducing the risk of connection failure between the first terminal piece and the circuit board caused by the movement of the housing relative to the circuit board due to external force, and improving the reliability of the battery device.

[0038] In some embodiments, a positioning column is formed on the housing, a positioning hole is formed on the circuit board, and the positioning column cooperates with the positioning hole.

[0039] In the technical solution, the positioning column is formed on the shell, the positioning hole is formed on the circuit board, and the positioning column cooperates with the positioning hole. On one hand, the first connector can be positioned conveniently through the positioning column and the positioning hole during assembly, thereby facilitating assembly of the battery device. On the other hand, the positioning column cooperates with the positioning hole, thereby limiting movement of the shell relative to the circuit board in a direction parallel to the circuit board through the positioning column, thereby reducing the risk of disconnection of the first terminal member from the circuit board due to movement of the shell relative to the circuit board caused by external force, and thereby improving the reliability of the battery device.

[0040] In some embodiments, the battery device further comprises a plurality of battery monomers, a busbar, and a sampling assembly. The busbar is used to electrically connect the plurality of battery monomers. The sampling assembly comprises a second connector and a sampling lead. The second connector is plugged with the first connector. The sampling lead has a sampling end and a connecting end. The sampling end is connected with the busbar or the battery monomers. The connecting end is connected with the second connector.

[0041] In the technical solution, the second connector can quickly connect the sampling lead and the first connector, thereby facilitating electrical connection of the sampling assembly and the circuit board, and being conducive to simplifying installation of the battery device.

[0042] In a second aspect, the embodiments of the present application further provide a power utilization device comprising the battery device described above, and the battery device is used to provide electric energy. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0044] Figure 1 A structural schematic diagram of a vehicle is provided for some embodiments of the present application;

[0045] Figure 2 An exploded view of a battery device is provided for some embodiments of the present application;

[0046] Figure 3 Another exploded view of a battery device is provided for some embodiments of the present application;

[0047] Figure 4 An exploded view of a first connector is provided for some embodiments of the present application;

[0048] Figure 5 An exploded view of a connecting terminal is provided for some embodiments of the present application;

[0049] Figure 6 This application provides a schematic diagram of the structure of a connection terminal according to some embodiments;

[0050] Figure 7 This is a schematic diagram of another connection terminal provided in some embodiments of this application;

[0051] Figure 8 This is a schematic diagram of the structure of another connection terminal provided in some embodiments of this application;

[0052] Figure 9 This is a schematic diagram of another connection terminal provided in some embodiments of this application;

[0053] Figure 10 This application provides schematic diagrams of the structure of a first connector and circuit board according to some embodiments;

[0054] Figure 11 for Figure 10 Sectional view of AA;

[0055] Figure 12 for Figure 11 Enlarged view of point C in the middle;

[0056] Figure 13 for Figure 11 Enlarged view at point D;

[0057] Figure 14 This is a schematic diagram of another first mounting hole provided in some embodiments of this application;

[0058] Figure 15 for Figure 10 Enlarged view of point B in the middle;

[0059] Figure 16 This application provides schematic diagrams of the structure of a first connecting terminal and a second connecting terminal in some embodiments.

[0060] Figure 17 A cross-sectional view of a first connector provided for some embodiments of this application;

[0061] Figure 18 An exploded view of the structure of another first connector provided in some embodiments of this application.

[0062] Icons: 1000 - Vehicle; 100 - Battery unit; 200 - Controller; 300 - Motor;

[0063] 10 - Box body; 11 - Conductive terminals of the first box; 12 - Conductive terminals of the second box;

[0064] 20 - Battery cell; 21 - Busbar;

[0065] 30 - circuit board; 31 - positioning hole;

[0066] 40 - first connector; 41 - housing; 41A - first mounting hole; 41B - second mounting hole; 41C - slot; 41D - third protrusion; 41E - second guide surface; 41F - second stop surface; 41G - insertion hole; 411 - first wall; 411A - first protrusion; 411B - second protrusion; 411C - barrier; 42 - connection terminal; 42A - first connection terminal; 42B - second connection terminal; 421 - first terminal piece; 4211 - main body; 42111 - soldering portion; 42112 - connecting portion; 42112A - limiting protrusion; 42112B - first guide surface; 42112C - first stop surface; 4212 - elastic portion; 422 - second terminal piece; 43 - fixing piece; 44 - positioning column;

[0067] 50 - second connector;

[0068] 60 - sampling assembly;

[0069] X - thickness direction of the circuit board; Y - length direction of the second terminal piece; Z - first direction. DETAILED DESCRIPTION

[0070] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0071] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, and are not intended to describe a particular order or primary and secondary relationship.

[0072] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments.

[0073] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "attached" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] The term "and / or" in the present application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects have an "or" relationship.

[0075] In the embodiments of the present application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length and width of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0076] "Multiple" appearing in the present application means two or more (including two).

[0077] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0078] The battery cell includes but is not limited to lithium ion battery, sodium ion battery, sodium lithium ion battery, lithium metal battery, sodium metal battery, lithium sulfur battery, magnesium ion battery, nickel hydrogen battery, nickel cadmium battery, lead-acid battery, etc.

[0079] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode and a separator. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can reduce the risk of short circuit of the positive and negative electrodes, and at the same time allow the active ions to pass through.

[0080] The battery device (Battery Apparatus) 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 (Battery Cell Assembly) can include a battery cell, and the battery cell is connected in series, parallel or mixed connection through a busbar component.

[0081] In some embodiments, the battery cell assembly is typically formed by an arrangement of battery cell assemblies; as an example, the battery cell assembly can be a battery module, which is formed by an arrangement and fixation of battery cell assemblies into a separate module. As an example, the battery module can be formed by binding the battery cell assemblies with a cable tie.

[0082] In some embodiments, the battery device can be a battery pack, which includes a case assembly and one or more battery cell assemblies, the battery cell assemblies are contained in the case assembly.

[0083] As an example, the battery cell assembly can be a battery module, which can be contained in the case assembly by fixing the battery module in the case assembly.

[0084] As an example, the battery cell assembly can also be contained in the case assembly by directly fixing the battery cell assembly in the case assembly.

[0085] As an example, the case assembly can include a first case conductive terminal and a second case conductive terminal. The first case conductive terminal and the second case conductive terminal are fastened so that an enclosed space is formed inside the case assembly to accommodate the battery cell assembly. Here, enclosed means covered or closed, which can be sealed or unsealed. The first case conductive terminal can be a top cover or a bottom plate.

[0086] As an example, the case assembly can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected with the frame so that an enclosed space is formed inside the case assembly to accommodate the battery cell assembly.

[0087] In some embodiments, the electrical device can be a vehicle.

[0088] As an example, the case assembly can be part of the chassis structure of the vehicle. For example, the top cover of the case assembly can be at least part of the floor of the vehicle, or the frame of the case assembly can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0089] In some embodiments, the battery device refers to an energy storage device, which includes a case assembly, at least one side of the case assembly is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0090] In recent years, electric vehicles have made great progress. In the field of electric vehicles, battery devices serve as the power source of electric vehicles and play an irreplaceable important role. Battery devices, as core components of electric vehicles, have high requirements in terms of energy density. In order to facilitate the management of the battery device, it is necessary to collect the voltage and temperature of each battery monomer in the battery device through a sampling device. The sampling device is electrically connected to the circuit board of the control mechanism through the connecting terminals of the connector. The connecting terminals are generally bent multiple times to provide a certain distance between the end of the connecting terminal for electrical connection with the sampling assembly and the circuit board to provide installation space for the structure of the connecting terminal and the sampling assembly. Since the end of the connecting terminal for electrical connection with the sampling assembly needs to be relatively fixed to facilitate the assembly of the battery device, the tolerance accumulated by the multiple bending of the connecting terminal is at the end of the connecting terminal for welding with the circuit board. Since the connecting terminals are multiple, the side of the end of the multiple connecting terminals for welding with the circuit board facing the circuit board is difficult to be located on the same plane, thereby causing a large distance between the other part of the connecting terminal and the circuit board when the part of the connecting terminal abuts against the circuit board, thereby causing a virtual welding phenomenon when the part of the connecting terminal is welded with the circuit board, and thereby causing electrical connection failure, thereby reducing the reliability of the battery device.

[0091] Based on the above considerations, in order to solve the problem of virtual welding of part of the connecting terminal and the circuit board due to the tolerance accumulated by the multiple bending of the connecting terminal. The battery device provided by the embodiment of the present application comprises a circuit board and a first connector; the first connector is mounted on the circuit board, the first connector comprises a housing and a plurality of connecting terminals, the housing is made of insulating material, and the plurality of connecting terminals are connected to the housing and are isolated from each other by the housing; wherein each connecting terminal comprises a first terminal piece and a second terminal piece formed in two parts, the first terminal piece is welded with the circuit board, and the second terminal piece electrically connects the first terminal piece and a sampling assembly.

[0092] In the battery device with such a structure, the connecting terminal comprises a first terminal piece and a second terminal piece formed in two parts, the first terminal piece is welded with the circuit board, and the second terminal piece electrically connects the first terminal piece and the sampling assembly, so that the connecting terminal can electrically connect the circuit board and the sampling assembly. At the same time, compared with the case where the connecting terminal is integrally formed, the connecting terminal is provided in two parts, and the multiple structures that need to be bent are arranged in the first terminal piece and the second terminal piece respectively, thereby reducing the number of times the single part needs to be bent. On the one hand, it is convenient for the processing of the first terminal piece and the second terminal piece; on the other hand, it is convenient for controlling the processing precision of the first terminal piece and the second terminal piece, thereby reducing the tolerance of the connecting terminal as a whole, so as to facilitate controlling the distance between the multiple connecting terminals and the circuit board to be within the range required for welding, thereby reducing the risk of virtual welding of the connecting terminal and the circuit board, and thereby improving the reliability of the battery device.

[0093] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery devices, for example, mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft including airplanes, rockets, space shuttles and spaceships.

[0094] The following embodiments are described for convenience with a vehicle as an example of an electric device in an embodiment of the present application.

[0095] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel car, a gas car or a new energy car, and the new energy car can be a pure electric car, a hybrid car or a range extended car, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom of the vehicle 1000, or at the head of the vehicle 1000, or at the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as an operating power source or a use power source of the vehicle 1000, etc. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0096] In some embodiments of the present application, the battery device 100 can not only be used as an operating power source or a use power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0097] Please refer to Figure 2 , Figure 2 A structural exploded view of a battery device 100 is provided for some embodiments of the present application. The battery device 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is used to be accommodated in the box body 10.

[0098] The box 10 is configured to provide an assembly space for the battery cell 20. The box 10 can have various structures. In some embodiments, the box 10 can include a first box conductive terminal 11 and a second box conductive terminal 12. The first box conductive terminal 11 and the second box conductive terminal 12 are overlapped with each other, and together define an assembly space for accommodating the battery cell 20. The second box conductive terminal 12 can be a hollow structure with one end open, and the first box conductive terminal 11 can be a plate structure. The first box conductive terminal 11 is overlapped with the open side of the second box conductive terminal 12, so that the first box conductive terminal 11 and the second box conductive terminal 12 together define the assembly space. Alternatively, the first box conductive terminal 11 and the second box conductive terminal 12 can both be hollow structures with one side open, and the open side of the first box conductive terminal 11 is overlapped with the open side of the second box conductive terminal 12.

[0099] Of course, the box 10 formed by the first box conductive terminal 11 and the second box conductive terminal 12 can have various shapes, such as a cylinder, a cuboid, or a square, etc. For example, in some embodiments, the box 10 has a cuboid shape. Figure 2

[0100] In the battery device 100, the battery cell 20 arranged in the box 10 can be one or multiple. When the battery cell 20 arranged in the box 10 is multiple, the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that the multiple battery cells 20 are connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole is accommodated in the box 10. Of course, the battery device 100 can also be that the multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection to form a battery module, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and the whole is accommodated in the box 10.

[0101] In some embodiments, the battery device 100 can further include other structures. For example, the battery device 100 can further include a current collecting component configured to connect the multiple battery cells 20 to achieve electrical connection between the multiple battery cells 20.

[0102] Each battery cell 20 can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can have a cuboid, a cylinder, a prism, or other shapes, etc. For example, in some embodiments, the battery cell 20 has a cuboid shape. Figure 3

[0103] Please refer to Figure 3 and Figure 4 , Figure 3 ​​Another structural exploded view of a battery device 100 provided for some embodiments of the present application, Figure 4 A structural exploded view of a first connector 40 provided for some embodiments of the present application. Embodiments of the present application provide a battery device 100 comprising a circuit board 30 and a first connector 40; the first connector 40 is mounted on the circuit board 30, and the first connector 40 comprises a housing 41 and a plurality of connection terminals 42; the housing 41 is made of insulating material, and the plurality of connection terminals 42 are connected to the housing 41 and are insulated from each other by the housing 41; wherein each connection terminal 42 comprises a first terminal piece 421 and a second terminal piece 422 which are formed separately; the first terminal piece 421 is welded to the circuit board 30, and the second terminal piece 422 is used to electrically connect the first terminal piece 421 and a sampling assembly 60.

[0104] The circuit board 30 includes, but is not limited to, a printed circuit board 30 or a flexible circuit board 30, etc.

[0105] The first connector 40 is mounted on the circuit board 30, and it is noted that the mounting can mean that the first connector 40 is detachably mounted on the circuit board 30, or the mounting can also mean that the first connector 40 is non-detachably mounted on the circuit board 30, for example, the first connector 40 is welded or bonded to the circuit board 30, or the first connector 40 is connected to the circuit board 30 through a slot 41C, a snap connection, etc.

[0106] The housing 41 is a protective structure that is sleeved outside the plurality of connection terminals 42; exemplary, the structure of the housing 41 includes, but is not limited to, a shell structure, a frame structure, etc., and of course the housing 41 can also include other special-shaped structures. The housing 41 allows the connection terminals 42 to be fixed and correctly aligned, and the housing 41 can also play a role in dust and dirt prevention for the connection terminals 42.

[0107] The housing 41 is made of insulating material, which means that the housing 41 can be made of insulating material from the inside to the outside, or only have an insulating layer on the surface. Exemplary, the housing 41 is entirely made of one of PET (polyethylene terephthalate), PBT (polybutylene terephthalate), PC (polycarbonate), or PS (polystyrene); for example, the housing 41 includes a conductive terminal made of metal material and an insulating layer wrapping the conductive terminal.

[0108] The connection terminal 42 is a conductive piece for electrically connecting the sampling assembly 60 and the circuit board 30; exemplary, one end of the connection terminal 42 can be directly connected to the sampling assembly 60 through welding, clamping, and plugging, etc., or indirectly connected to the sampling assembly 60 through the remaining conductive pieces; the other end of the connection terminal 42 can be connected to the circuit board 30 through welding or bonding, thereby electrically connecting the sampling assembly 60 and the circuit board 30.

[0109] It can be understood that the connection terminal 42 can be made of a conductive metal such as copper, iron, or aluminum.

[0110] The plurality of connection terminals 42 are connected to the housing 41 and are insulated from each other by the housing 41. It can be understood that the housing 41 is used to fix the connection terminals 42, and at least part of the housing 41 is arranged between adjacent connection terminals 42 to limit the mutual overlap between the connection terminals 42, thereby insulating the connection terminals 42.

[0111] In some embodiments, the housing 41 is provided with a slot 41C, the housing 41 is used to fix the connection terminals 42, and the end of the plurality of connection terminals 42 for electrically connecting the sampling assembly 60 is located in the slot 41C and in the same reference plane, so as to facilitate the sampling assembly 60 or the conductive part connected to the sampling assembly 60 to be connected to the circuit board 30 through the plurality of connection terminals 42 at the same time when being inserted into the slot 41C. Furthermore, the tolerances caused by the multiple bending of the connection terminals 42 are accumulated at the end of the connection terminals 42 for welding with the circuit board 30. Since there are multiple connection terminals 42, it is difficult to make the side of the end of the plurality of connection terminals 42 for welding with the circuit board 30 face the same plane, thereby causing a large distance between the other part of the connection terminals 42 and the circuit board 30 when the part of the connection terminals 42 abuts against the circuit board 30, and thus causing a virtual welding phenomenon when the part of the connection terminals 42 is welded with the circuit board 30, and further causing an electrical connection failure, thereby reducing the reliability of the battery device 100.

[0112] The first terminal part 421 and the second terminal part 422 are two conductive terminals of the connection terminal 42, wherein the first terminal part 421 is a structural part of the connection terminal 42 for welding or bonding with the circuit board 30, and the second terminal part 422 is a structural part of the connection terminal 42 for connecting with the sampling assembly 60 or the conductive part connected to the sampling assembly 60.

[0113] It can be understood that the first terminal part 421 and the second terminal part 422 can be electrically connected by directly abutting or indirectly abutting through a conductive part.

[0114] In the embodiment, the connecting terminal 42 includes a first terminal piece 421 and a second terminal piece 422, the first terminal piece 421 is welded with the circuit board 30, and the second terminal piece 422 is electrically connected with the first terminal piece 421 and the sampling assembly 60, so that the connecting terminal 42 can electrically connect the circuit board 30 and the sampling assembly 60. Compared with the case that the connecting terminal 42 is integrally formed, the connecting terminal 42 is provided as two parts, and the structures that need to be bent are arranged in the first terminal piece 421 and the second terminal piece 422 respectively, so that the number of bending on a single part is reduced, on the one hand, the machining of the first terminal piece 421 and the second terminal piece 422 is facilitated, and on the other hand, the machining precision of the first terminal piece 421 and the second terminal piece 422 is controlled, so that the tolerance of the connecting terminal 42 as a whole is reduced, and the distance between the plurality of connecting terminals 42 and the circuit board 30 is controlled to be within the welding range, so that the risk of false welding between the connecting terminal 42 and the circuit board 30 is reduced, and the reliability of the battery device 100 is improved.

[0115] Please refer to Figure 5 , Figure 5 The structure explosion diagram of the connecting terminal 42 provided for some embodiments of the application is shown in the figure.

[0116] The first terminal piece 421 is bent, which means that the first terminal piece 421 has two parts connected with each other, and the extension directions of the two parts form an included angle.

[0117] The second terminal piece 422 is straight, which means that the second terminal piece 422 extends along a direction.

[0118] In the embodiment, the first terminal piece 421 is bent, and the second terminal piece 422 is straight, that is, the first terminal piece 421 is formed by one bending, and the second terminal piece 422 does not need to be bent, so that compared with the case that the connecting terminal 42 is integrally formed, the total number of bending of the connecting terminal 42 is reduced, the accumulation of tolerance is reduced, the tolerance of the connecting terminal 42 as a whole is further reduced, the distance between the plurality of connecting terminals 42 and the circuit board 30 is controlled to be within the welding range, the risk of false welding between the connecting terminal 42 and the circuit board 30 is further reduced, and the reliability of the battery device 100 is improved.

[0119] Please refer to Figure 5 According to some embodiments of the application, the length direction Y of the second terminal piece intersects with the thickness direction X of the circuit board.

[0120] The length direction Y of the second terminal member intersects the thickness direction X of the circuit board, which can be understood as that the length direction Y of the second terminal member forms an angle with the thickness direction X of the circuit board, or that the length direction Y of the second terminal member is perpendicular to the thickness direction X of the circuit board.

[0121] In the embodiment, the length direction Y of the second terminal member intersects the thickness direction X of the circuit board, so that the second terminal member 422 extends in a direction that is not perpendicular to the circuit board 30, and thus when the sampling assembly 60 is electrically connected to the second terminal member 422, a certain distance can be formed between the sampling assembly 60 and the circuit board 30 in a direction perpendicular to the thickness direction X of the circuit board, so that the sampling assembly 60 is facilitated to be arranged, and the installation of the battery device 100 is facilitated to be simplified.

[0122] Please refer to Figure 5 , and please refer to Figures 6-8 , Figures 6-8 Three structure schematic diagrams of the connecting terminal 42 are provided for some embodiments of the application. According to some embodiments of the application, the first terminal member 421 and the second terminal member 422 abut.

[0123] The abutting of the first terminal member 421 and the second terminal member 422 can be that the first terminal member 421 and the second terminal member 422 are pressed by the abutting force of interaction between them, or that the first terminal member 421 and the second terminal member 422 are attached without interaction force.

[0124] It can be understood that the first terminal member 421 and the second terminal member 422 can abut in any direction.

[0125] In some embodiments, please refer to Figure 6 , one end of the first terminal member 421 away from the circuit board (not shown in the figure) in the thickness direction X of the circuit board abuts the side of the second terminal member 422 facing the circuit board (not shown in the figure) in the thickness direction X of the circuit board.

[0126] In some embodiments, please refer to Figure 7 , one end of the second terminal member 422 close to the first terminal member 421 in the length direction Y of the second terminal member abuts the side of the first terminal member 421 facing the second terminal member 422 in the length direction Y of the second terminal member.

[0127] In some embodiments, please refer to Figure 8The side of the first terminal piece 421 facing the second terminal piece 422 in the first direction Z abuts against the side of the second terminal piece 422 facing the first terminal piece 421 in the first direction Z, and the first direction Z, the length direction Y of the second terminal piece, and the thickness direction of the circuit board are perpendicular to each other.

[0128] In the embodiment, the first terminal piece 421 abuts against the second terminal piece 422 to replace the bending structure of the connection terminal 42, thereby reducing the number of bending structures of the connection terminal 42, reducing the total number of bending of the connection terminal 42, reducing the accumulation of tolerances, further reducing the tolerances of the connection terminal 42 as a whole, facilitating the control of the distance between the plurality of connection terminals 42 and the circuit board 30 within the range required for welding, further reducing the risk of false welding of the connection terminal 42 and the circuit board 30, and improving the reliability of the battery device 100.

[0129] Please refer to Figure 4 and Figure 9 , and refer to Figure 10 , Figure 9 Another structure of the connection terminal 42 provided by some embodiments of the present application is shown in the following structure diagram, Figure 10 The structure diagram of the first connector 40 and the circuit board 30 provided by some embodiments of the present application is shown in the following structure diagram. According to some embodiments of the present application, the first terminal piece 421 includes a main body 4211 and an elastic part 4212, the main body 4211 is welded with the circuit board 30, and the elastic part 4212 abuts against the second terminal piece 422.

[0130] The main body 4211 is the part of the first terminal piece 421 for connecting with the circuit board 30.

[0131] The elastic part 4212 can be the part of the first terminal piece 421 capable of elastic deformation, and the elastic part 4212 can be integrally formed with the main body 4211 or separately arranged and connected by other means, such as welding, bonding or clamping.

[0132] For example, the elastic part 4212 can be a spring, an elastic sheet or other elastic elements.

[0133] It can be understood that the elastic part 4212 is made of conductive metal (such as copper, iron, aluminum) so that the elastic part 4212 can electrically connect the second terminal piece 422 and the main body 4211.

[0134] In the embodiment, by abutting the elastic part 4212 against the second terminal member 422, on the one hand, the elastic part 4212 can be deformed elastically to be attached to the side of the second terminal member 422, thereby increasing the abutting area of the abutting part of the first terminal member 421 and the second terminal member 422, thereby increasing the reliability of the electrical connection between the first terminal member 421 and the second terminal member 422; on the other hand, when the second terminal member 422 moves relative to the first terminal member 421 due to an external force such as the sampling assembly 60 or other components, the elastic part 4212 can keep the abutting of the first terminal member 421 and the second terminal member 422 by elastic deformation, thereby increasing the reliability of the electrical connection between the first terminal member 421 and the second terminal member 422.

[0135] Please refer to Figure 5 and Figure 9 According to some embodiments of the present application, the elastic part 4212 is a cantilever structure connected to the main body 4211 at one end.

[0136] The cantilever structure can mean that one end of the elastic part 4212 is connected to the side or end surface of the main body 4211, and the other end is in a free state. The elastic part 4212 can be in a strip shape, one end of the elastic part 4212 is connected to the side or end surface of the main body 4211, and the other end of the elastic part 4212 is in a free state and extends away from the end of the second terminal member 422 connected to the sampling assembly 60.

[0137] In some embodiments, in a plane perpendicular to the first direction Z, the orthographic projection of the second terminal member 422 partially overlaps the orthographic projection of the main body 4211, one end of the elastic part 4212 is connected to the side of the main body 4211 facing the second terminal member 422 in the first direction Z, the other end of the elastic part 4212 is in a free state, and there is a gap between the main body 4211 in the first direction Z, and extends away from the end of the second terminal member 422 connected to the sampling assembly 60.

[0138] In some embodiments, please refer to Figure 9 On the circuit board 30, the orthographic projection of the second terminal member 422 partially overlaps the orthographic projection of the main body 4211, one end of the elastic part 4212 is connected to the end surface of the main body 4211 facing the second terminal member 422 in the thickness direction X of the circuit board, the other end of the elastic part 4212 is in a free state, and there is a gap between the main body 4211 in the thickness direction X of the circuit board, and extends away from the end of the second terminal member 422 connected to the sampling assembly 60.

[0139] In the embodiment, the elastic part 4212 is simple in structure, one end of the elastic part 4212 is connected with the main body 4211, the other end of the elastic part 4212 is in a suspended state as a free end and is used to abut against the second terminal piece 422, so that the elastic part 4212 and the main body 4211 have a certain space for elastic deformation of the elastic part 4212, thereby facilitating the elastic part 4212 to be better attached to the periphery of the second terminal, thereby increasing the abutting area of the abutting position of the first terminal piece 421 and the second terminal piece 422, thereby increasing the reliability of the electrical connection between the first terminal piece 421 and the second terminal piece 422.

[0140] Please refer to Figure 5 and Figure 9 , and please refer to Figure 10 , according to some embodiments of the application, the main body 4211 includes a welding part 42111 and a connecting part 42112, the welding part 42111 is welded with the circuit board 30, the connecting part 42112 is arranged at an angle with the welding part 42111, one end of the connecting part 42112 is connected with the welding part 42111, and the elastic part 4212 is arranged at the other end of the connecting part 42112.

[0141] The welding part 42111 is a part of the main body 4211 for connecting with the circuit board 30 by welding.

[0142] In some implementations, please refer to Figure 10 , part of the welding part 42111 is located outside the shell 41 to facilitate welding with the circuit board 30.

[0143] The connecting part 42112 is a part of the main body 4211 for arranging the elastic part 4212 to electrically connect the second terminal piece 422.

[0144] It can be understood that the connecting part 42112 is arranged at an angle with the welding part 42111, that is, the main body 4211 is a bent mechanism.

[0145] In some embodiments, please refer to Figure 9On the circuit board 30, the orthographic projection of the second terminal member 422 overlaps the orthographic projection of the main body 4211, one end of the elastic portion 4212 is connected to the end surface of the main body 4211 facing the second terminal member 422 in the thickness direction X of the circuit board, the elastic portion 4212 is in a strip shape, and the side of the elastic portion 4212 facing the second terminal member 422 is a curved surface, the curvature center of the curved surface is located on the side of the elastic portion 4212 away from the second terminal member 422, and the curved surface is connected to the side surface of the main body 4211 part facing the second terminal member 422 in the length direction Y of the second terminal member. The other end of the elastic portion 4212 is in a free hanging state, and there is a gap between the main body 4211 in the thickness direction X of the circuit board, and extends towards the direction away from the end of the second terminal member 422 connected to the sampling assembly 60. Thus, when the operator fixes the first terminal member 421 and pushes the second terminal member 422 along the length direction Y of the second terminal member to make the second terminal member 422 and the first terminal member 421 abut, the second terminal member 422 can move along the side of the elastic portion 4212 facing the second terminal member 422, and the free end of the elastic portion 4212 is deformed towards the main body 4211.

[0146] In the present embodiment, the connecting portion 42112 is arranged at an angle with the welding portion 42111, one end of the connecting portion 42112 is connected to the welding portion 42111, that is, the main body 4211 is in a bent shape, and the elastic portion 4212 is arranged at the other end of the connecting portion 42112 and used to abut against the second terminal member 422, so that the elastic portion 4212 can absorb the tolerance caused by the bending of the main body 4211 through elastic deformation, and further reduce the tolerance of the entire connecting terminal 42, so as to facilitate controlling the distance between the plurality of connecting terminals 42 and the circuit board 30 within the range required for welding, thereby further reducing the risk of virtual welding between the connecting terminal 42 and the circuit board 30, and improving the reliability of the battery device 100.

[0147] Please refer to Figures 4-10 According to some embodiments of the present application, the length direction of the welding portion 42111 is perpendicular to the thickness direction X of the circuit board, and the length direction of the connecting portion 42112 is parallel to the thickness direction X of the circuit board.

[0148] In the embodiment, the length direction of the welding portion 42111 is perpendicular to the thickness direction X of the circuit board, so that the welding portion 42111 can extend in a direction parallel to the circuit board 30, thereby increasing the area of the welding portion 42111 by extending the length of the welding portion 42111 when the width dimension of the welding portion 42111 is constant, thereby increasing the connection area of the first terminal member 421 and the circuit board 30, further reducing the risk of virtual welding of the connection terminal 42 and the circuit board 30, thereby improving the reliability of the battery device 100; the length direction of the connecting portion 42112 is parallel to the thickness direction X of the circuit board, so that the connecting portion 42112 can extend in the thickness direction X of the circuit board, and further so that the second terminal member 422 abutting against the connecting portion 42112 can have a certain distance between the circuit board 30 in the thickness direction X of the circuit board, thereby giving the sampling assembly 60 a certain installation space, facilitating the electrical connection of the sampling assembly 60 and the second terminal member 422, and being conducive to simplifying the installation of the battery device 100. Meanwhile, compared with the case where the length direction of the connecting portion 42112 is not parallel to the thickness direction X of the circuit board, when the second terminal member 422 can have a certain distance between the circuit board 30 in the thickness direction X of the circuit board, the length of the connecting portion 42112 is reduced, thereby reducing the material required for the production of the connecting portion 42112, and further reducing the production cost of the main body 4211.

[0149] Please refer to Figures 4-10 According to some embodiments of the present application, the length direction of the welding portion 42111 is parallel to the length direction Y of the second terminal member.

[0150] In the embodiment, the length direction of the welding portion 42111 is parallel to the length direction Y of the second terminal member, so that compared with the case where the length direction of the welding portion 42111 intersects the length direction Y of the second terminal member, the volume occupied by the first terminal member 421 in the first direction Z (the first direction Z, the length direction of the second terminal, and the thickness direction X of the circuit board are perpendicular to each other) is reduced, thereby facilitating the arrangement of the plurality of connection terminals 42 in the first direction Z.

[0151] Please refer to Figure 11 and Figure 12 , Figure 11 is a sectional view of A-A in Figure 10 , and Figure 12 is an enlarged view of C in Figure 11 According to some embodiments of the present application, the side of the welding portion 42111 facing away from the circuit board 30 abuts against the shell 41 in the thickness direction X of the circuit board.

[0152] It can be understood that, when the size of the soldering portion 42111 of the first terminal of the plurality of connection terminals 42 in the thickness direction X of the circuit board is fixed, the side of the soldering portion 42111 away from the circuit board 30 is in abutment with the housing 41, so that the side of the soldering portion 42111 for soldering with the circuit board 30 is located on the same plane with the side of the housing 41 in abutment with the soldering portion 42111 as the reference.

[0153] In some embodiments, referring to Figures 11-12 In the length direction Y of the second terminal piece, the housing 41 has a first wall 411 away from the opening of the slot 41C, and the outer surface of the first wall 411 is convex to form a first convex portion 411A, and in the thickness direction X of the circuit board, the first convex portion 411A is in abutment with the side of the soldering portion 42111 away from the circuit board 30.

[0154] In the embodiment, the side of the soldering portion 42111 away from the circuit board 30 is in abutment with the housing 41 in the thickness direction X of the circuit board, and the soldering portion 42111 of the first terminal piece 421 of the plurality of connection terminals 42 is further limited by the housing 41, and the tolerance of the first terminal piece 421 in the thickness direction of the circuit board 30 is absorbed by the elastic portion 4212, so that the side of the soldering portion 42111 of the plurality of connection terminals 42 facing the circuit board 30 is located on the same reference plane while the first terminal piece 421 and the second terminal piece 422 are electrically connected, thereby further reducing the risk of false welding of the connection terminal 42 and the circuit board 30, thereby improving the reliability of the battery device 100.

[0155] In some embodiments, referring to Figure 11 and Figure 13 , Figure 13 for Figure 11 is an enlarged view of D in FIG. 10. According to some embodiments of the present application, the housing 41 has a first mounting hole 41A and a second mounting hole 41B, the second mounting hole 41B is in communication with the first mounting hole 41A, the connecting portion 42112 is accommodated in the first mounting hole 41A, and a part of the second terminal piece 422 is accommodated in the second mounting hole 41B.

[0156] The first mounting hole 41A and the second mounting hole 41B are two hole portions communicated with each other on the housing 41, and the first mounting hole 41A and the second mounting hole 41B can be provided on the housing 41 by machining, or can be formed by integral molding with the housing 41.

[0157] It can be understood that the axis of the first mounting hole 41A should be parallel to the length direction of the connecting piece, and the axis of the second mounting hole 41B should be parallel to the length direction Y of the second terminal piece, and the axis of the first mounting hole 41A and the axis of the second mounting hole 41B are exemplary at an angle.

[0158] In some embodiments, referring to Figure 11 and Figure 13 In the length direction Y of the second terminal member, the housing 41 has a first wall 411 away from the opening of the slot 41C, the outer surface of the first wall 411 is convex to form a first convex portion 411A, and the inner surface of the first wall 411 is provided with a second mounting hole 41B. The first mounting hole 41A is provided on the side of the first convex portion 411A facing the circuit board 30. Understandably, part of the first mounting hole 41A and the second mounting hole 41B is arranged in the first convex portion 411A to reduce the strength weakening of the first mounting hole 41A and the second mounting hole 41B to the housing 41, thereby improving the reliability of the first connector 40.

[0159] In the embodiment in which the first terminal member 421 has the elastic portion 4212, the elastic portion 4212 is located between the first mounting hole 41A and the second mounting hole 41B, so that the first mounting hole 41A and the second mounting hole 41B are structurally limited and protected at the abutting position of the elastic portion 4212 and the second terminal member 422, thereby improving the reliability of the connection between the elastic portion 4212 and the second terminal member 422.

[0160] In some embodiments, the connecting portion 42112 can be interference fit with the first mounting hole 41A, so that when the elastic portion 4212 is elastically deformed to generate an elastic force on the connecting portion 42112 in the thickness direction X of the circuit board due to being driven by the second terminal member 422, the first mounting hole 41A can limit the connecting portion 42112 from moving away from the second terminal member 422 in the thickness direction X of the circuit board, thereby causing the side of the soldering portion 42111 of the plurality of connecting terminals 42 facing the circuit board 30 to not be located on the same reference plane.

[0161] In some embodiments, the first mounting hole 41A can also be provided with a single-row limiting mechanism, so that when the elastic portion 4212 is elastically deformed to generate an elastic force on the connecting portion 42112 in the thickness direction X of the circuit board due to being driven by the second terminal member 422, the first mounting hole 41A can limit the connecting portion 42112 from moving away from the second terminal member 422 in the thickness direction X of the circuit board, thereby causing the side of the soldering portion 42111 of the plurality of connecting terminals 42 facing the circuit board 30 to not be located on the same reference plane.

[0162] In some embodiments, the second terminal member 422 can be interference fit with the second mounting hole 41B, so that when the elastic portion 4212 is elastically deformed to generate an elastic force on the second terminal member 422 in the length direction Y of the second terminal member due to being driven by the second terminal member 422, the second mounting hole 41B can limit the second terminal member 422 from moving away from the first terminal member 421 in the length direction Y of the second terminal member, thereby causing the risk of disconnection of the connecting terminal 42.

[0163] In the present embodiment, the second mounting hole 41B is in communication with the first mounting hole 41A, the connecting portion 42112 is accommodated in the first mounting hole 41A, and a portion of the second terminal member 422 is accommodated in the second mounting hole 41B, so that the abutment between the elastic portion 4212 and the second terminal member 422 is located within the first mounting hole 41A and the second mounting hole 41B, and further, the first mounting hole 41A and the second mounting hole 41B provide structural protection for the elastic portion 4212, thereby reducing the risk that the remaining structural members of the battery device 100 will extend between the elastic portion 4212 and the second terminal member 422 to cause the first terminal member 421 and the second terminal member 422 to fail to electrically connect, thereby improving the reliability of the battery device 100.

[0164] Please refer to Figure 11 and Figure 13 , and please refer to Figure 14 , Figure 14 Another structural schematic diagram of the first mounting hole 41A provided for some embodiments of the present application. According to some embodiments of the present application, the outer surface of the connecting portion 42112 forms a limiting protrusion 42112A, and the limiting protrusion 42112A is in interference fit with the first mounting hole 41A.

[0165] The limiting protrusion 42112A is a protrusion formed on the outer circumferential side of the connecting portion 42112.

[0166] It can be understood that, compared to the case where the entire connecting portion 42112 is in interference fit with the first mounting hole 41A, the interference fit between the limiting portion and the first mounting hole 41A reduces the deformation of the first mounting hole 41A and reduces the risk of crushing the hole wall of the first mounting hole 41A.

[0167] Exemplarily, the limiting protrusion 42112A can be configured to be provided on two opposite sides of the connecting portion 42112 in a direction perpendicular to the thickness direction X of the circuit board; the limiting protrusion 42112A can also be configured to be provided around the outer surface of the connecting portion 42112 and connected end to end.

[0168] In some embodiments, please refer to Figure 13, the first guide surface 42112B of the limiting protrusion 42112A is arranged on the side of the circuit board 30 close to the second terminal member 422 in the thickness direction X of the circuit board 30, and the first guide surface 42112B is inclined away from the connecting portion 42112 in the direction away from the second terminal member 422, so that when the limiting protrusion 42112A enters the first mounting hole 41A, the first guide surface 42112B of the limiting protrusion 42112A can guide the hole wall of the first mounting hole 41A to elastically deform away from the connecting portion 42112, thereby facilitating the insertion of the connecting portion 42112 into the first mounting hole 41A. The first stop surface 42112C of the limiting protrusion 42112A is arranged on the side of the circuit board 30 away from the second terminal member 422 in the thickness direction X of the circuit board 30, and the first stop surface 42112C is parallel to the circuit board 30, so that when the elastic portion 4212 is elastically deformed by being driven by the second terminal member 422 to generate an elastic force on the connecting portion 42112 in the thickness direction X of the circuit board 30, the first stop surface 42112C can cooperate with the hole wall of the first mounting hole 41A to limit the connecting portion 42112 from moving away from the second terminal member 422 in the thickness direction X of the circuit board 30, thereby avoiding the risk that the welding portions 42111 of the plurality of connecting terminals 42 facing the side of the circuit board 30 are not located on the same reference plane.

[0169] In some embodiments, please refer to Figure 14 , the hole wall of the first mounting hole 41A protrudes to form a third protrusion 41D, the second guide surface 41E of the third protrusion 41D is arranged on the side of the circuit board 30 close to the circuit board 30 in the thickness direction X of the circuit board 30, and the second guide surface 41E is inclined towards the connecting portion 42112 in the direction away from the circuit board 30, so that when the limiting protrusion 42112A enters the first mounting hole 41A, the second guide surface 41E can guide the hole wall provided with the first mounting hole 41A to elastically deform away from the connecting portion 42112, thereby facilitating the insertion of the connecting portion 42112 into the first mounting hole 41A. The second stop surface 41F of the third protrusion 41D is arranged on the side of the circuit board 30 away from the circuit board 30 in the thickness direction X of the circuit board 30, and the second stop surface 41F is parallel to the circuit board 30, so that when the elastic portion 4212 is elastically deformed by being driven by the second terminal member 422 to generate an elastic force on the connecting portion 42112 in the thickness direction X of the circuit board 30, the second stop surface 41F can abut against the first stop surface 42112C in the thickness direction X of the circuit board 30, to limit the connecting portion 42112 from moving away from the second terminal member 422 in the thickness direction X of the circuit board 30, thereby avoiding the risk that the welding portions 42111 of the plurality of connecting terminals 42 facing the side of the circuit board 30 are not located on the same reference plane.

[0170] In some embodiments, the limiting protrusion 42112A is a plurality of limiting protrusions arranged at intervals in the thickness direction X of the circuit board 30.

[0171] In the present embodiment, the limiting protrusion 42112A is in interference fit with the second mounting hole 41B, so that the connecting portion 42112 can be relatively fixed in the axial direction of the second mounting hole 41B, thereby limiting the movement of the connecting portion 42112 in the axial direction of the second mounting hole 41B due to the elastic force generated after the elastic portion 4212 and the second terminal member 422 abut, and further reducing the risk that the welding portions 42111 of the plurality of connecting terminals 42 face the side of the circuit board 30 not located on the same reference surface due to the movement of the connecting portion 42112 in the axial direction of the second mounting hole 41B, thereby further reducing the risk of false welding of the connecting terminals 42 and the circuit board 30, thereby improving the reliability of the battery device 100.

[0172] Please refer to Figure 15 , Figure 15 for Figure 10 an enlarged view of B. According to some embodiments of the present application, the plurality of first terminal members 421 are spaced apart in the first direction Z, and the outer surface of the shell 41 is provided with a plurality of barrier portions 411C located between adjacent two first terminal members 421, and the first direction Z is perpendicular to the thickness direction X of the circuit board.

[0173] The barrier portion 411C is a structural member of the shell 41 for separating the part of the connecting terminal 42 located outside the shell 41. Exemplarily, the barrier portion 411C is provided between the welding portions 42111 of adjacent two first terminal members 421.

[0174] In some embodiments, the first protrusion 411A protrudes from the surface of the shell 41 in the length direction Y of the second terminal member to form the barrier portion 411C, the welding portion 42111 has a part protruding from the first protrusion 411A in the length direction Y of the second terminal member, and the barrier portion 411C is provided between the welding portions 42111 of adjacent two first terminal members 421.

[0175] In the present embodiment, the barrier portion 411C is located between adjacent two first terminal members 421, thereby reducing the risk of internal short circuit of the battery device 100 caused by abutment of adjacent two first terminal members 421 in the first direction Z.

[0176] Please refer to Figure 16 , Figure 16 ​A structure diagram of the first connection terminal 42A and the second connection terminal 42B is provided for some embodiments of the present application. According to some embodiments of the present application, the plurality of connection terminals 42 includes a plurality of first connection terminals 42A and a plurality of second connection terminals 42B, the first connection terminals 42A and the second connection terminals 42B are arranged alternately along a first direction Z, the second terminal pieces 422 of the plurality of first connection terminals 42A are arranged in one row, the second terminal pieces 422 of the plurality of second connection terminals 42B are arranged in another row, the two rows of second terminal pieces 422 are arranged spaced apart along the thickness direction X of the circuit board, and the first direction Z is perpendicular to the thickness direction X of the circuit board.

[0177] The first direction Z is a direction perpendicular to the thickness direction X of the circuit board and at an angle with the length direction Y of the second terminal piece. Exemplarily, the first direction Z, the thickness direction X of the circuit board, and the length direction Y of the second terminal piece are perpendicular to each other two by two.

[0178] In some embodiments, the second terminal piece 422 and the first terminal piece 421 abut against each other at a side facing each other in the first direction Z or in the length direction Y of the second terminal piece, the structure of the first terminal piece 421 of the first connection terminal 42A and the first terminal piece 421 of the second connection terminal 42B is consistent, and the abutment position of the second terminal piece 422 of the first connection terminal 42A and the first terminal piece 421 of the first connection terminal 42A is located between the abutment position of the second terminal piece 422 of the second connection terminal 42B and the first terminal piece of the second connection terminal 42B and the circuit board 30.

[0179] In the present embodiment, the second terminal pieces 422 of the plurality of first connection terminals 42A are arranged in one row, the second terminal pieces 422 of the plurality of second connection terminals 42B are arranged in another row, and the two rows of second terminal pieces 422 are arranged spaced apart along the thickness direction X of the circuit board, so that the second terminal pieces 422 of the plurality of connection terminals 42 make full use of the space of the connector in the thickness direction X of the circuit board, thereby reducing the size of the connector in the first direction Z compared with the case where the second terminal pieces 422 of the plurality of connection terminals 42 are arranged in one row and spaced apart along the first direction Z.

[0180] Please refer to Figure 16 , and please refer to Figure 17 , Figure 17 A sectional view of the first connector 40 is provided for some embodiments of the present application. According to some embodiments of the present application, the first terminal piece 421 and the second terminal piece 422 abut against each other along the thickness direction X of the circuit board; in the thickness direction X of the circuit board, the size of the first terminal piece 421 of the first connection terminal 42A is not equal to the size of the first terminal piece 421 of the second connection terminal 42B.

[0181] In the thickness direction X of the circuit board, the size of the first terminal piece 421 of the first connecting terminal 42A is not equal to the size of the first terminal piece 421 of the second connecting terminal 42B. It can be understood that the size of the first terminal piece 421 of the first connecting terminal 42A is smaller than the size of the first terminal piece 421 of the second connecting terminal 42B. It can also be understood that the size of the first terminal piece 421 of the first connecting terminal 42A is larger than the size of the first terminal piece 421 of the second connecting terminal 42B.

[0182] In some embodiments, referring to Figure 16 , the second terminal piece 422 and the first terminal piece 421 abut against each other on the side facing each other in the thickness direction X of the circuit board. In the thickness direction X of the circuit board, the size of the first terminal piece 421 of the first connecting terminal 42A is smaller than the size of the first terminal piece 421 of the second connecting terminal 42B. This is to make the abutting position of the second terminal piece 422 of the first connecting terminal 42A and the first terminal piece 421 of the first connecting terminal 42A be located between the abutting position of the second terminal piece 422 of the second connecting terminal 42B and the first terminal piece 421 of the second connecting terminal 42B and the circuit board 30.

[0183] In some embodiments, referring to Figure 16 , in the thickness direction X of the circuit board, the size of the connecting portion 42112 of the first connecting terminal 42A is not equal to the size of the connecting portion 42112 of the second connecting terminal 42B.

[0184] In some embodiments, referring to Figure 11 and 17In the length direction Y of the second terminal piece, the housing 41 has a first wall 411 away from the opening of the slot 41C, the outer surface of the first wall 411 is convex to form a first convex part 411A and a second convex part 411B, the first convex part 411A is located between the second convex part 411B and the circuit board 30 along the thickness direction X of the circuit board, the inner surface of the first wall 411 is provided with a second mounting hole 41B, the part of the second mounting hole 41B through which the second terminal piece 422 of the first connecting terminal 42A passes is located in the first convex part 411A, and the part of the second mounting hole 41B through which the second terminal piece 422 of the second connecting terminal 42B passes is located in the second convex part 411B. The side of the first convex part 411A facing the circuit board 30 is provided with a first mounting hole 41A. The first mounting hole 41A through which the first terminal piece 421 of the first connecting terminal 42A passes is in communication with the second mounting hole 41B through which the second terminal piece 422 of the first connecting terminal 42A passes. The first mounting hole 41A through which the first terminal piece 421 of the second connecting terminal 42B passes penetrates the first convex part 411A and extends to the second convex part 411B to be in communication with the second mounting hole 41B through which the second terminal piece 422 of the second connecting terminal 42B passes. Thus, the first mounting hole 41A through which the first terminal piece 421 of the second connecting terminal 42B passes is divided into a part located in the first convex part 411A and a part located in the second convex part 411B. This facilitates separate processing and reduces the processing difficulty of the housing 41.

[0185] In the present embodiment, the size of the first terminal piece 421 of the first connecting terminal 42A is not equal to the size of the first terminal piece 421 of the second connecting terminal 42B in the thickness direction X of the circuit board, so that the first terminal piece 421 of the first connecting terminal 42A and the first terminal piece 421 of the second connecting terminal 42B are respectively in abutment with the two rows of second terminal pieces 422 arranged at intervals along the thickness direction X of the circuit board, and the structure is simple and easy to implement.

[0186] Please refer to Figure 18 , Figure 18 Another structure explosion diagram of the first connector 40 provided for some embodiments of the present application. According to some embodiments of the present application, the first connector 40 further comprises a fixing member 43 connected to the housing 41, and the fixing member 43 is welded to the circuit board 30.

[0187] The fixing member 43 is a structural member for connecting the circuit board 30 and the housing 41. Exemplarily, the fixing member 43 can be made of a metal material, so that the fixing member 43 has a certain structural strength and reduces the risk of deformation of the fixing member 43.

[0188] In some embodiments, please refer to Figure 18The housing 41 has a hole 41G penetrating the housing 41 along the thickness direction of the circuit board 30, and the fixing member 43 is inserted into the hole 41G and welded with the circuit board 30.

[0189] In the embodiment, the fixing member 43 is connected to the housing 41, and the fixing member 43 is welded with the circuit board 30, so as to limit the movement of the housing 41 relative to the circuit board 30 through the fixing member 43, thereby reducing the risk of the connection failure of the first terminal member 421 with the circuit board 30 caused by the movement of the housing 41 relative to the circuit board 30 due to external force, and improving the reliability of the battery device 100.

[0190] Please refer to Figure 18 According to some embodiments of the present application, the plurality of first terminal members 421 are arranged at intervals along the first direction Z, and the fixing member 43 is provided with two, and the two fixing members 43 are respectively located at the two ends of the housing 41 along the first direction Z.

[0191] In the embodiment, the two fixing members 43 are respectively located at the two ends of the housing 41 along the first direction Z, so that the support force of the fixing member 43 on the housing 41 is more uniform, thereby further reducing the risk of the connection failure of the first terminal member 421 with the circuit board 30 caused by the movement of the housing 41 relative to the circuit board 30 due to external force, and improving the reliability of the battery device 100.

[0192] Please refer to Figure 18 According to some embodiments of the present application, the housing 41 is formed with a positioning column 44, and the circuit board 30 is formed with a positioning hole 31, and the positioning column 44 cooperates with the positioning hole 31.

[0193] The positioning column 44 is a structural member for limiting the relative movement of the circuit board 30 and the housing 41. For example, the positioning column 44 can be made of metal material, so as to have a certain structural strength and reduce the risk of deformation of the positioning column 44.

[0194] In some embodiments, the positioning column 44 cooperates with the positioning hole 31 and can be welded with the circuit board 30.

[0195] In the embodiment, the housing 41 is formed with a positioning column 44, and the circuit board 30 is formed with a positioning hole 31, and the positioning column 44 cooperates with the positioning hole 31. On the one hand, during assembly, the first connector 40 can be conveniently positioned through the positioning column 44 and the positioning hole 31, thereby facilitating the assembly of the battery device 100. On the other hand, the positioning column 44 cooperates with the positioning hole 31, so as to limit the movement of the housing 41 relative to the circuit board 30 along the direction parallel to the circuit board 30 through the positioning column 44, thereby reducing the risk of the connection failure of the first terminal member 421 with the circuit board 30 caused by the movement of the housing 41 relative to the circuit board 30 due to external force, and improving the reliability of the battery device 100.

[0196] Please refer to Figure 3 According to some embodiments of the present application, the battery device 100 further comprises a plurality of battery cells 20, a busbar 21 and a sampling assembly 60; the sampling assembly 60 comprises a second connector 50 and a sampling lead, the second connector 50 is plugged with the first connector 40; the sampling lead has a sampling end and a connecting end, the sampling end is connected with the busbar 21 or the battery cell 20, and the connecting end is connected with the second connector 50.

[0197] The battery cell 20 can include a lithium ion secondary battery cell 20, a lithium ion primary battery cell 20, a lithium-sulfur battery cell 20, a sodium lithium ion battery cell 20, a sodium ion battery cell 20 or a magnesium ion battery cell 20, etc., which is not limited by the embodiments of the present application. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc., which is also not limited by the embodiments of the present application. The battery cell 20 is generally divided into three types according to the packaging method: cylindrical battery cell 20, square battery cell 20 and soft package battery cell 20, which is also not limited by the embodiments of the present application.

[0198] The busbar 21 is a component that can connect a plurality of battery cells 20 in series or in parallel to realize the electrical connection between the plurality of battery cells 20. The busbar 21 can also be called a busbar, a tab or a busbar, which is generally a metal sheet that can be welded to the electrode terminal of the battery cell 20 to connect a plurality of battery cells 20 in series or in parallel.

[0199] The sampling lead is a component for collecting electrical data of the sampling component. The sampling lead can be used to collect the voltage and / or temperature of the battery cell 20. The sampling lead can be a copper lead, an aluminum lead, a silver lead or an alloy lead, etc.

[0200] In some embodiments, the second connector 50 comprises a conductive terminal having an insertion hole for inserting the second terminal component 422. The shape of the insertion hole can have multiple options, such as a circular hole, a triangular hole, a rectangular hole, an oval hole, etc. The shape of the insertion hole can be selected according to actual needs. The shape of the insertion hole can also be selected according to the shape of the second terminal component 422, for example, the second terminal component 422 is cylindrical, and the insertion hole can be a circular hole. Of course, the shape of the insertion hole and the second terminal component 422 can also be different, for example, the second terminal component 422 is cylindrical, and the insertion hole can be a triangular hole.

[0201] The material of the conductive terminal can be a conductive material, such as aluminum, copper, etc. The connecting end is connected with the conductive terminal to electrically connect the sampling lead and the circuit board 30.

[0202] In the present embodiment, the second connector 50 can quickly connect the sampling lead and the first connector, thereby facilitating the electrical connection between the sampling assembly 60 and the circuit board 30, and being conducive to simplifying the installation of the battery device 100.

[0203] According to some embodiments of the present application, the present application also provides a power-using device, the power-using device comprising the battery device 100 of any of the above solutions, and the battery device 100 is used to provide electric energy for the power-using device.

[0204] Wherein, the power-using device can be the equipment or system of any of the above application battery devices 100.

[0205] According to some embodiments of the present application, please refer to Figures 3-18The battery device 100 includes a circuit board 30 and a first connector 40. The first connector 40 is mounted on the circuit board 30. The first connector 40 includes a housing 41 and a plurality of connection terminals 42. The housing 41 is made of insulating material. The plurality of connection terminals 42 are connected to the housing 41 and are insulated from each other by the housing 41. Each connection terminal 42 includes a first terminal piece 421 and a second terminal piece 422 which are formed separately. The first terminal piece 421 is welded to the circuit board 30. The second terminal piece 422 is electrically connected to the first terminal piece 421 and a sampling component 60. The first terminal piece 421 is in a bent shape. The second terminal piece 422 is in a straight shape. The length direction Y of the second terminal piece intersects the thickness direction X of the circuit board. The first terminal piece 421 abuts against the second terminal piece 422. The first terminal piece 421 includes a main body 4211 and an elastic portion 4212. The main body 4211 is welded to the circuit board 30. The elastic portion 4212 abuts against the second terminal piece 422. The elastic portion 4212 is in a cantilever structure connected to the main body 4211 at one end. The main body 4211 includes a welding portion 42111 and a connecting portion 42112. The welding portion 42111 is welded to the circuit board 30. The length direction of the welding portion 42111 is perpendicular to the thickness direction X of the circuit board. One end of the connecting portion 42112 is connected to the welding portion 42111. The elastic portion 4212 is arranged at the other end of the connecting portion 42112. The length direction of the welding portion 42111 is parallel to the length direction Y of the second terminal piece. Along the thickness direction X of the circuit board, one side of the welding portion 42111 away from the circuit board 30 abuts against the housing 41. The housing 41 has a first mounting hole 41A and a second mounting hole 41B. The second mounting hole 41B is in communication with the first mounting hole 41A. The connecting portion 42112 is arranged in the first mounting hole 41A. A part of the second terminal piece 422 is arranged in the second mounting hole 41B. An outer surface of the connecting portion 42112 forms a limiting protrusion 42112A. The limiting protrusion 42112A is in interference fit with the first mounting hole 41A. A plurality of first terminal pieces 421 are arranged at intervals along a first direction Z. An outer surface of the housing 41 protrudes a plurality of blocking portions 411C. The blocking portions 411C are arranged between adjacent two first terminal pieces 421. The first direction Z is perpendicular to the thickness direction X of the circuit board. The plurality of connection terminals 42 include a plurality of first connection terminals 42A and a plurality of second connection terminals 42B. The first connection terminals 42A and the second connection terminals 42B are arranged alternately along the first direction Z. The second terminal pieces 422 of the plurality of first connection terminals 42A are arranged in one row. The second terminal pieces 422 of the plurality of second connection terminals 42B are arranged in another row. The two rows of second terminal pieces 422 are arranged at intervals along the thickness direction X of the circuit board. The first direction Z is perpendicular to the thickness direction X of the circuit board. Along the thickness direction X of the circuit board, the size of the first terminal piece 421 of the first connection terminal 42A is not equal to the size of the first terminal piece 421 of the second connection terminal 42B.The first connector 40 further comprises a fixing member 43 connected to the housing 41, and the fixing member 43 is welded to the circuit board 30. A plurality of first terminal members 421 are arranged at intervals in the first direction Z, and the fixing member 43 is provided with two, which are respectively located at both ends of the housing 41 in the first direction Z. The housing 41 is formed with a positioning column 44, and the circuit board 30 is formed with a positioning hole 31, and the positioning column 44 cooperates with the positioning hole 31. The battery device further comprises a plurality of battery monomers 20, a bus member 21 and a sampling assembly 60; the sampling assembly 60 comprises a second connector 50 and a sampling lead wire, the second connector 50 is plugged with the first connector 40, and the second connector 50 comprises a plurality of conductive terminals; the sampling lead wire has a sampling end and a connecting end, the sampling end is connected with the bus member 21 or the battery monomer 20, and the connecting end is connected with the second connector 50.

[0206] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0207] The above embodiments are only used to illustrate the technical solutions of the present application, and are not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery device, characterized by, The application relates to a circuit board, a first connector mounted on the circuit board, the first connector comprising a housing and a plurality of connecting terminals, the housing being made of insulating material, and the connecting terminals being connected to the housing and insulated from each other by the housing. Each connecting terminal comprises a first terminal part and a second terminal part formed separately, the first terminal part being welded to the circuit board, and the second terminal part being used for electrically connecting the first terminal part and a sampling component. The first terminal part is in a bent shape, and the second terminal part is in a straight shape. The length direction of the second terminal part intersects the thickness direction of the circuit board.

2. The battery device according to claim 1, characterized by The first terminal part and the second terminal part abut against each other.

3. The battery device of claim 2, wherein, The first terminal part comprises a main body and an elastic part, the main body being welded to the circuit board, and the elastic part abutting against the second terminal part.

4. The battery device of claim 1, wherein The elastic part is in a cantilever structure with one end connected to the main body.

5. The battery device of claim 4, wherein, The main body comprises a welding part and a connecting part, the welding part being welded to the circuit board, the connecting part being arranged at an angle with the welding part, one end of the connecting part being connected to the welding part, and the elastic part being arranged at the other end of the connecting part.

6. The battery device of claim 5, wherein, The length direction of the welding part is perpendicular to the thickness direction of the circuit board, and the length direction of the connecting part is parallel to the thickness direction of the circuit board.

7. The battery device of claim 5, wherein The length direction of the welding part is parallel to the length direction of the second terminal part.

8. The battery device of claim 7, wherein, In the thickness direction of the circuit board, one side of the welding part, which faces away from the circuit board, abuts against the housing.

9. The battery device of claim 8, wherein, The housing has a first mounting hole and a second mounting hole, the second mounting hole being in communication with the first mounting hole, the connecting part being arranged in the first mounting hole, and a part of the second terminal part being arranged in the second mounting hole.

10. The battery device of claim 7, wherein, An outer surface of the connecting part forms a limiting protrusion, and the limiting protrusion is in interference fit with the first mounting hole.

11. The battery device of claim 7, wherein A plurality of first terminal parts are arranged at intervals in a first direction, an outer surface of the housing is provided with a plurality of blocking parts, the blocking parts are arranged between adjacent two first terminal parts, and the first direction is perpendicular to the thickness direction of the circuit board.

12. The battery device of claim 11, wherein, The plurality of connecting terminals comprise a plurality of first connecting terminals and a plurality of second connecting terminals, the first connecting terminals and the second connecting terminals are arranged alternately in a first direction, the second terminal parts of the plurality of first connecting terminals are arranged in one row, the second terminal parts of the plurality of second connecting terminals are arranged in another row, and the two rows of second terminal parts are arranged at intervals in the thickness direction of the circuit board.

13. The battery device of claim 1, wherein, The first terminal part and the second terminal part abut against each other in the thickness direction of the circuit board.

14. The battery device of claim 1, wherein, In the thickness direction of the circuit board, the size of the first terminal part of the first connecting terminal is not equal to the size of the first terminal part of the second connecting terminal.

15. The battery device of claim 14, wherein, The first connector further comprises a fixing part connected to the housing, and the fixing part is welded to the circuit board. A plurality of first terminal parts are arranged at intervals in a first direction, and the fixing part is provided with two fixing parts, and the two fixing parts are arranged at two ends of the housing in the first direction, respectively.

16. The battery device of claim 1, wherein ​ 17. The battery device of claim 16, wherein, ​ 18. The battery device of claim 1, wherein, A positioning column is formed on the shell, and a positioning hole is formed on the circuit board, and the positioning column is matched with the positioning hole.

19. The battery device of claim 1, wherein, The battery device further comprises: a plurality of battery monomers; a current collecting member for electrically connecting the plurality of battery monomers; The sampling assembly comprises: a second connector which is plugged with the first connector; a sampling lead wire having a sampling end and a connecting end, the sampling end being connected with the current collecting member or the battery monomer, and the connecting end being connected with the second connector.

20. An electrical device, comprising: The battery device according to any one of claims 1-19 is used for providing electric energy.

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