Battery device and electric equipment

Abstract

The invention relates to a battery device and electric equipment. The battery device comprises at least one battery monomer and a relay, the relay is electrically connected with the battery monomer, the relay comprises a shell, a coil assembly and a magnet assembly, a containing cavity is formed in the shell, the coil assembly is arranged in the containing cavity, and the coil assembly comprises a first coil and a second coil which can generate magnetic fields after being electrified. The first coil and the second coil are arranged in a spaced mode in the first direction, the magnet assembly is arranged in the containing cavity and comprises at least one conductive connecting piece, and the conductive connecting piece is arranged between the first coil and the second coil in the first direction; the first coil and the second coil are configured to move along a first direction under the action of a magnetic field in a power-on state of at least one of the first coil and the second coil, and the axial direction of at least one of the first coil and the second coil is the same as the first direction. According to the battery device, the size of the relay can be reduced, so that the size of the battery device is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery device, and particularly relates to a battery device and an electric equipment. BACKGROUND

[0002] The relay is used for controlling the on-off of the high-voltage loop of the electric vehicle, and after the relay is attracted, the current is conducted through the static contact and the dynamic contact of the relay. In order to improve the stroke of the internal conductive part of the relay, the power of the coil assembly generally needs to be increased, so as to improve the powerful magnetic field to drive the conductive connecting part to move. However, increasing the power will cause the size of the coil assembly to increase, thereby increasing the size of the relay. SUMMARY

[0003] In view of the defects of the prior art, the purpose of the application is to provide a battery device and an electric equipment which can effectively solve the problem of increasing the stroke of the conductive part while increasing the size of the relay: In a first aspect, the application provides a battery device, which comprises: at least one battery monomer; a relay electrically connected with the battery monomer; The relay comprises: a housing, an accommodating cavity is formed in the inside of the housing; a coil assembly, the coil assembly is arranged in the accommodating cavity, the coil assembly comprises a first coil and a second coil which can respectively generate a magnetic field after being energized, and the first coil and the second coil are arranged at intervals along a first direction; a magnet assembly, the magnet assembly is arranged in the accommodating cavity, the magnet assembly comprises at least one conductive connecting part, the conductive connecting part is arranged between the first coil and the second coil along the first direction, and is configured to be capable of moving along the first direction under the action of the magnetic field of at least one of the first coil and the second coil in the energized state, and the axial direction of at least one of the first coil and the second coil is the same as the first direction; a plurality of static contacts, the plurality of static contacts at least comprises a first static contact, the first static contact is electrically connected with the battery monomer, and the conductive connecting part is configured to maintain electrical connection with the first static contact within the moving range along the first direction.

[0004] According to the battery device of the application, the conductive connecting part can always be electrically connected with the battery monomer through the first static contact within the moving range along the first direction, and can be electrically connected with other static contacts during the movement, so as to realize the conduction of the circuit, and the conductive connecting part is driven to move along the first direction by the first coil and the second coil, which can improve the moving range of the conductive connecting part along the first direction, and compared with driving the conductive connecting part to move the same range by a single coil, the power and the size of the first coil and the second coil can be effectively reduced, thereby reducing the size of the relay and the size of the battery device.

[0005] In some embodiments of the application, the plurality of stationary contacts further comprises a second stationary contact and a third stationary contact, and the electrically conductive connecting piece has a first position in a state that the first coil is not energized and the second coil is energized, and when the electrically conductive connecting piece is in the first position, the electrically conductive connecting piece is electrically connected to the second stationary contact and the third stationary contact at the same time.

[0006] When the electrically conductive connecting piece is in the first position, the electrically conductive connecting piece is electrically connected to the battery cell through the first stationary contact, and the electrically conductive connecting piece is electrically connected to the second stationary contact and the third stationary contact at the same time, at this time the first stationary contact serves as the circuit input terminal, and the second stationary contact and the third stationary contact serve as the circuit output terminals respectively, so that the current shunt of the circuit can be realized, and then the generation of electric arc during the breaking of the relay is reduced, the wear or failure of the stationary contact is reduced, and the working reliability of the battery device is improved.

[0007] In some embodiments of the application, the second stationary contact and the third stationary contact are arranged in a second direction, and at least part of the electrically conductive connecting piece is arranged between the second stationary contact and the third stationary contact along the second direction, and the first direction and the second direction intersect.

[0008] By arranging at least part of the electrically conductive connecting piece between the second stationary contact and the third stationary contact along the second direction, the electrically conductive connecting piece can be electrically connected to the second stationary contact and the third stationary contact at the same time when the electrically conductive connecting piece is in the first position.

[0009] In some embodiments of the application, the electrically conductive connecting piece further has a second position in a state that the first coil is energized and the second coil is not energized, and when the electrically conductive connecting piece is in the second position, the electrically conductive connecting piece is electrically connected to the second stationary contact.

[0010] In the state that the first coil is energized and the second coil is not energized, the electrically conductive connecting piece can move to the second position with the largest spacing size from the first position under the action of the attractive force or the repulsive force generated by the first coil, and the electrically conductive connecting piece is electrically connected to the second stationary contact at the second position, so that the circuit is conducted through the first stationary contact and the second stationary contact.

[0011] In some embodiments of the application, the side of the second stationary contact facing the magnet assembly is provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end are arranged in a first direction and are electrically connected, and when the electrically conductive connecting piece is in the first position, the electrically conductive connecting piece is electrically connected to the first connecting end, and when the electrically conductive connecting piece is in the second position, the electrically conductive connecting piece is electrically connected to the second connecting end.

[0012] By providing the first connecting end and the second connecting end on the side of the second stationary contact facing the magnet assembly, when the electrically conductive connecting piece is in the first position, the electrically conductive connecting piece can be electrically connected to the second stationary contact through the first connecting end, and when the electrically conductive connecting piece is in the second position, the electrically conductive connecting piece can be electrically connected to the second stationary contact through the second connecting end, so that the electrically conductive connecting piece can be electrically connected to the second stationary contact when the electrically conductive connecting piece is in the first position or the second position.

[0013] In some embodiments of the present application, the second stationary contact is provided with a first output end on a side facing away from the magnet assembly, the first output end is configured to be electrically connected with an external conductive member, and the first output end, the first connecting end and the second connecting end are integrally formed.

[0014] By integrally forming the first output end, the first connecting end and the second connecting end, the conductive connecting member can be electrically connected with the second stationary contact in the first position or the second position, and the number of stationary contacts can be reduced.

[0015] In some embodiments of the present application, the conductive connecting member is arranged on a side of the second stationary contact along a third direction, the conductive connecting member is configured to abut against the first connecting end along the second direction or the third direction within a movement range along the first direction, and the conductive connecting member is further configured to abut against the second connecting end along the second direction or the third direction within the movement range along the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0016] The conductive connecting member can abut against the first connecting end along the second direction or the third direction, so as to realize the electrical connection between the conductive connecting member and the second stationary contact in the first position. The conductive connecting member can abut against the second connecting end along the second direction or the third direction, so as to realize the electrical connection between the conductive connecting member and the second stationary contact in the second position.

[0017] In some embodiments of the present application, the magnetic field directions of the first coil and the second coil are the same, and the first coil and the second coil are arranged along the first direction, respectively.

[0018] By setting the magnetic field directions of the first coil and the second coil to be the same, the first coil and the second coil can respectively generate different directions of attractive force or different directions of repulsive force on the magnet assembly arranged between the first coil and the second coil when the first coil and the second coil are energized, so as to drive the conductive connecting member in the magnet assembly to move towards the first coil or the second coil, and improve the movement range of the conductive connecting member.

[0019] In some embodiments of the present application, the magnetic field strength of the first coil in the energized state is less than the magnetic field strength of the second coil in the energized state, the conductive connecting member further has a third position in a simultaneous energized state of the first coil and the second coil, and the conductive connecting member is electrically connected with a third stationary contact in the third position.

[0020] In the state that the first coil and the second coil are simultaneously energized, due to the magnetic field strength in the state that the first coil is energized being less than the magnetic field strength in the state that the second coil is energized, the conductive connecting piece moves to a position close to the second coil, i.e., a third position, under the joint action of the attractive force of the first coil and the second coil, or the conductive connecting piece moves to a position close to the first coil, i.e., a third position, under the joint action of the repulsive force of the first coil and the second coil, and the conductive connecting piece is electrically connected with the third stationary contact when being in the third position, so as to conduct the circuit through the first stationary contact and the third stationary contact.

[0021] In some embodiments of the present application, a side of the third stationary contact facing the magnet assembly is provided with a third connecting end and a fourth connecting end, the third connecting end and the fourth connecting end are spaced apart along the first direction and electrically connected, and the conductive connecting piece is electrically connected with the third connecting end when being in the first position and is electrically connected with the fourth connecting end when being in the third position.

[0022] By providing the third connecting end and the fourth connecting end on the side of the third stationary contact facing the magnet assembly, the conductive connecting piece can be electrically connected with the third stationary contact through the third connecting end when being in the first position and can be electrically connected with the third stationary contact through the fourth connecting end when being in the third position, so that the conductive connecting piece can be electrically connected with the third stationary contact when being in the first position or the third position.

[0023] In some embodiments of the present application, a side of the third stationary contact facing away from the magnet assembly is provided with a second output end, the second output end is configured to be electrically connected with an external conductive piece, and the second output end, the third connecting end and the fourth connecting end are integrally formed.

[0024] By integrally forming the second output end, the third connecting end and the fourth connecting end, it is convenient for the conductive connecting piece to be electrically connected with the third stationary contact when being in the first position or the third position, and the number of stationary contacts can be reduced.

[0025] In some embodiments of the present application, the conductive connecting piece is arranged on one side of the third stationary contact along a third direction, the conductive connecting piece is configured to abut against the third connecting end along the second direction or the third direction within a movement range along the first direction, the conductive connecting piece is further configured to abut against the fourth connecting end along the second direction or the third direction within the movement range along the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0026] The conductive connecting piece can abut against the third connecting end along the second direction or the third direction, so as to realize the electrical connection between the conductive connecting piece and the third stationary contact when being in the first position. The conductive connecting piece can abut against the fourth connecting end along the second direction or the third direction, so as to realize the electrical connection between the conductive connecting piece and the third stationary contact when being in the third position.

[0027] In some embodiments of the application, the relay further comprises an elastic member, at least part of the elastic member is arranged on the side of the conductive connecting member facing the first coil, and the conductive connecting member further has a fourth position when neither the first coil nor the second coil is energized and the elastic member is in a natural state, and the conductive connecting member is disconnected from the second stationary contact and the third stationary contact when in the fourth position.

[0028] When neither the first coil nor the second coil is energized, the conductive connecting member is not affected by the magnetic field, the elastic member arranged on the conductive connecting member returns to the natural state, i.e. the state of not being compressed or stretched, the conductive connecting member moves to the fourth position under the action of the elastic member, and the conductive connecting member is disconnected from the second stationary contact and the third stationary contact when in the fourth position, i.e. the relay cannot be used to conduct the circuit.

[0029] In some embodiments of the application, the conductive connecting member is configured to move towards the first coil when the first coil is energized and the second coil is not energized, and the conductive connecting member is further configured to move towards the second coil when the first coil is not energized and the second coil is energized.

[0030] When the first coil is energized and the second coil is not energized, the conductive connecting member moves towards the first coil under the action of the magnetic field force of the first coil, i.e. the first coil generates an attractive force on the conductive connecting member when energized. When the first coil is not energized and the second coil is energized, the conductive connecting member moves towards the second coil under the action of the magnetic field force of the second coil, i.e. the second coil generates an attractive force on the conductive connecting member when energized.

[0031] In some embodiments of the application, the magnetic field directions of the first coil, the second coil and the conductive connecting member are the same, and are arranged along the first direction respectively.

[0032] By setting the magnetic field directions of the first coil, the second coil and the conductive connecting member to be the same, the first coil and the second coil are respectively used to generate an attractive force on the conductive connecting member and drive the conductive connecting member to move along the first direction.

[0033] In some embodiments of the application, the magnet assembly further comprises a mounting plate, the conductive connecting member is arranged between the mounting plate and at least part of the number of stationary contacts along a third direction, the side of the mounting plate facing the stationary contacts is provided with a guide structure extending along the first direction, the conductive connecting member is connected to the guide structure in a sliding manner along the first direction, and the conductive connecting member is electrically connected to the first stationary contact through the guide structure, and the third direction intersects the first direction.

[0034] The conductive connecting piece is matched with the guide structure and is movable along the first direction, and is kept in electrical connection with the first stationary contact through the guide structure during the movement of the conductive connecting piece along the first direction, so that the relay conducting circuit can be turned on when the conductive connecting piece contacts any one of the second stationary contact and the third stationary contact during the movement.

[0035] In some embodiments of the present application, the mounting plate is a metal plate, the first stationary contact is fixed to the mounting plate, and part of the mounting plate is protrudingly arranged along the third direction and forms the guide structure, and the conductive connecting piece is formed with a sliding groove matched with the guide structure.

[0036] The first stationary contact can be directly connected in contact with the metal plate, that is, the electrical connection between the first stationary contact and the guide structure can be realized, so that the arrangement of the conductive circuit is reduced, and the conductive structure of the first stationary contact and the conductive connecting piece is simplified.

[0037] In some embodiments of the present application, the conductive connecting piece comprises an armature having electrical conductivity.

[0038] The armature has magnetism and can move under the action of the magnetic field generated by the energized coil, and the armature also has electrical conductivity and can keep electrical connection with the first stationary contact.

[0039] In some embodiments of the present application, the magnet assembly further comprises a ceramic housing, and the conductive connecting piece is arranged inside the ceramic housing.

[0040] By arranging the conductive connecting piece inside the ceramic housing, the electric arc generated when the conductive connecting piece and the stationary contact are disconnected can be effectively isolated, the electric arc breaking through the ceramic housing and damaging other components in the relay is reduced, and the integration of the magnet assembly is improved, so that the conductive connecting piece can be arranged inside the ceramic housing first during assembly, and then the ceramic housing is assembled into the relay, thereby facilitating the modular assembly of the relay.

[0041] In some embodiments of the present application, the ceramic housing comprises a body portion and first and second sealing plates, the body portion surrounds to form a mounting cavity with openings arranged at two ends along the first direction, the first and second sealing plates are connected with the body portion and block the openings at the two ends, the conductive connecting piece is arranged in the mounting cavity, and the projection of the conductive connecting piece along the first direction is respectively within the projection range of the first and second sealing plates.

[0042] By arranging the conductive connecting piece in the mounting cavity and arranging the projection of the conductive connecting piece along the first direction respectively within the projection range of the first and second sealing plates, that is, arranging the conductive connecting piece completely inside the ceramic housing, the electric arc generated when the conductive connecting piece and the stationary contact are disconnected can be effectively isolated by the ceramic housing.

[0043] In some embodiments of the present application, the magnet assembly further comprises at least one magnet, the magnet is arranged outside the ceramic shell, and the magnetic field direction of the magnet is perpendicular to the first direction respectively.

[0044] By arranging the magnet outside the ceramic shell, when the electric arc is generated by breaking the contact between the conductive connecting piece and the stationary contact, the magnet can generate a magnetic field perpendicular to the first direction, the electric arc current interacts with the magnetic field to generate a force to drive the movement of the electric arc, so as to stretch it outward and cool it down to extinguish, thereby achieving the purpose of magnetic blowout arc extinguishing.

[0045] In some embodiments of the present application, the coil assembly comprises a first coil assembly and a second coil assembly, wherein the first coil assembly comprises a first shell and a first coil arranged in the first shell, the second coil assembly comprises a second shell and a second coil arranged in the second shell, the first shell and the second shell are arranged in the first direction, and the magnet assembly is arranged between the first shell and the second shell in the first direction.

[0046] By arranging the first coil inside the first shell, the first coil can generate a magnetic field when energized to drive the movement of the conductive connecting piece in the first direction, and at the same time, the integration of the first coil assembly can be improved, and the first coil can be arranged inside the first shell during assembly, and then the first shell is assembled into a relay, thereby facilitating the modular assembly of the relay. By arranging the second coil inside the second shell, the second coil can generate a magnetic field when energized to drive the movement of the conductive connecting piece in the second direction, and at the same time, the integration of the second coil assembly can be improved, and the second coil can be arranged inside the second shell during assembly, and then the second shell is assembled into a relay, thereby facilitating the modular assembly of the relay.

[0047] In some embodiments of the present application, the relay further comprises a plurality of connecting pieces, and the plurality of connecting pieces are connected to the plurality of stationary contacts one by one respectively.

[0048] By arranging the plurality of connecting pieces, the relay can be electrically connected to the battery monomer through a part of the connecting pieces, and the relay can be electrically connected to other electrical devices through another part of the connecting pieces, thereby completing the power supply to the other electrical devices.

[0049] In some embodiments of the present application, at least one connecting piece comprises a first connecting portion, a transition portion and a second connecting portion arranged in sequence, and the first connecting portion and the second connecting portion are arranged on opposite sides of the plate surface of the transition portion respectively.

[0050] By arranging the first connecting portion and the second connecting portion on opposite sides of the plate surface of the transition portion respectively, the connecting piece can be electrically connected to the stationary contact through the first connecting portion and the second connecting portion on either side of the transition portion, thereby facilitating the electrical connection between the connecting piece and the stationary contact.

[0051] In some embodiments of the present application, The plate surface of the first connecting part is provided with a plurality of first connecting holes; and / or, The plate surface of the second connecting part is provided with a plurality of first connecting holes.

[0052] By providing a plurality of second connecting holes, the first connecting part can selectively adopt any first connecting hole to be connected with the static contact, or the second connecting part can selectively adopt any first connecting hole to be connected with the static contact, thereby facilitating the electrical connection between the connecting piece and the static contact.

[0053] In some embodiments of the present application, the number of conductive connecting pieces is at least two, and the at least two conductive connecting pieces are respectively configured to maintain electrical connection with the first static contact within the movement range along the first direction.

[0054] By providing at least two conductive connecting pieces, and the at least two conductive connecting pieces respectively maintaining electrical connection with the first static contact, at least one of the at least two conductive connecting pieces can be electrically connected with other static contacts except the first static contact, thereby realizing the conduction of the relay, or the at least two conductive connecting pieces can be respectively electrically connected with different static contacts except the first static contact, thereby conducting the circuit through multiple different static contacts and realizing the shunt of the relay.

[0055] In a second aspect, the present application provides a power consumption device, which comprises the battery device of any one of the above.

[0056] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0057] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the attached drawings indicate the same or similar components. In the drawings: Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application; Figure 2 is a structural schematic diagram of a battery device provided by an embodiment of the present application; Figure 3 is a structural schematic diagram of a battery monomer assembly provided by an embodiment of the present application; Figure 4 is an exploded structural schematic diagram of a battery monomer provided by an embodiment of the present application; Figure 5is a structural schematic diagram of a relay in an embodiment of the present application; Figure 6 is Figure 5 is a structural schematic diagram of a relay after removing a connecting piece in the relay in Figure 7 is Figure 6 is a structural schematic diagram of a relay from another angle in the relay in Figure 8 is Figure 7 is a structural schematic diagram of a relay in the relay in Figure 9 is Figure 7 is a structural schematic diagram of a relay after removing a housing body in the relay in Figure 10 is Figure 6 is a structural schematic diagram of a relay in the relay in Figure 11 is Figure 6 is a structural schematic diagram of a relay in the relay in Figure 12 is Figure 6 is a structural schematic diagram of a relay in the relay in Figure 13 is Figure 6 is a structural schematic diagram of a relay in the relay in Figure 14 is a structural schematic diagram of a second connecting piece in some other embodiments of the present application.

[0058] The reference signs in the detailed description are as follows: 1, vehicle; 10, battery device; 11, controller; 12, motor; 20, battery cell assembly; 21, battery cell; 211, end cover; 212, housing; 213, electrode assembly; 214, electrode terminal; 30, box; 301, first box; 302, second box; 40, relay; 41, housing; 411, housing body; 4111, first coil wiring port; 4112, second coil wiring port; 412, bottom plate; 42, coil assembly; 421, first coil assembly; 4211, first coil; 4212, first housing; 422, second coil assembly; 4221, second coil; 4222, second housing; 43, magnet assembly; 431, conductive connecting piece; 432, elastic piece; 433, mounting plate; 4331, guide structure; 434, ceramic housing; 4341, body part; 4342, first sealing plate; 4343, second sealing plate; 435, magnet; 436, support plate; 441, first static contact; 442, second static contact; 4421, first connecting end; 4422, second connecting end; 4423, first output end; 443, third static contact; 4431, third connecting end; 4432, fourth connecting end; 4433, second output end; 451, first connecting piece; 452, second connecting piece; 4521, first connecting part; 4522, transition part; 4523, second connecting part; 4524, first connecting hole; 4525, positioning protrusion; 453, third connecting piece; 461, first electric control board; 462, second electric control board; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0059] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising" and "having," and any variations thereof, as used herein are intended to cover a non-exclusive inclusion.

[0061] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0062] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0063] In the description of the embodiments of the present application, the term "and / or" is only to describe the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0064] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0065] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] At present, from the development of market situation, the application of power battery is more and more extensive. The power battery is not only applied to the energy storage power supply system of hydraulic, thermal, wind and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0068] The relay is used to control the on-off of the high-voltage loop of the electric vehicle. After the relay is attracted, the current is conducted through the static contact and the moving contact of the relay. In order to improve the stroke of the internal conductive connecting piece of the traditional relay, the power of the coil assembly generally needs to be increased, so as to improve the stronger magnetic field to drive the conductive connecting piece to move. However, increasing the power will increase the size of the coil assembly, thereby increasing the size of the relay.

[0069] In order to solve the problem of increasing the stroke of the conductive connector while increasing the size of the relay, the present application proposes a battery device and an electrical equipment. According to the battery device and the electrical equipment of the present application, the movement range of the conductive connector can be increased, and the size of the relay can be reduced, thereby reducing the size of the battery device.

[0070] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0071] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. For example, the battery cell assembly may be a battery module, which is formed by arranging and securing multiple battery cells to form a single module. For example, a battery module may be formed by bundling multiple battery cells using cable ties.

[0072] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies housed in the case.

[0073] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0074] As an example, the battery cell assembly may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0075] As an example, the housing may include a first housing and a second housing. The first housing and the second housing engage to form an enclosed space within the housing to house the battery cell assembly. Enclosed here means covered or closed, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0076] As an example, the box may include a top cover, a frame, and a bottom plate, wherein the top cover and the bottom plate are respectively connected to the frame to form a closed space inside the box to accommodate the battery cell assembly.

[0077] As an example, the box body can be used as a part of the chassis structure of the vehicle. For example, the top cover of the box body can become at least a part of the floor of the vehicle, or the frame of the box body can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0078] In some embodiments, the battery device refers to an energy storage device, which includes a box with a door on at least one side. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0079] In some embodiments, an energy storage device includes one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery modules connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0080] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it at the appropriate time. For example, an energy storage device can store electrical energy during periods of low electricity consumption and provide it to relevant users or electrical equipment during periods of peak electricity consumption. The energy storage system provided in the embodiments of the present application can be any power system that requires an energy storage device.

[0081] The technical solutions described in the embodiments of the present application are applicable to various electrical devices and energy storage devices that use battery cells and battery devices, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships, spacecraft and energy storage containers, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0082] Figure 1 This is a schematic diagram of the structure of the vehicle 1 provided in some embodiments of the present application. Figure 1 As shown, vehicle 1 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. A battery device 10 is disposed within vehicle 1. Battery device 10 can be located at the bottom, front, or rear of vehicle 1. Battery device 10 can be used to power vehicle 1. For example, battery device 10 can serve as an operating power source for vehicle 1. Vehicle 1 can also include a controller 11 and a motor 12. Controller 11 is used to control battery device 10 to power motor 12, for example, to meet the power requirements of vehicle 1 during startup, navigation, and driving.

[0083] In some embodiments of the present application, the battery device 10 can serve not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0084] Figure 2 FIG. 1 is a schematic structural diagram of a battery device 10 according to an embodiment of the present application. Figure 3 This is a schematic structural diagram of a battery cell assembly 20 according to an embodiment of the present application. Figure 2 and Figure 3As shown, in order to meet different power requirements, the battery device 10 can include a plurality of battery cells 21, which are the smallest units that make up the battery device 10. The plurality of battery cells 21 can be connected in series and / or in parallel via electrode terminals to be applied to various application occasions. Among them, the plurality of battery cells 21 can be connected in series or in parallel or in a mixed connection, which means a mixture of series and parallel connections.

[0085] In combination Figure 2 And Figure 3 As shown, the battery device 10 can include a plurality of battery cell assemblies 20 and a box 30, and the plurality of battery cell assemblies 20 are accommodated inside the box 30. The box 30 is used to accommodate the battery cells 21 or the battery cell assemblies 20 to reduce the influence of liquid or other foreign matters on the charging or discharging of the battery cells 21. The box 30 can be a simple solid structure such as a cuboid or a cylinder or a sphere, or a complex solid structure composed of a simple solid structure such as a cuboid or a cylinder or a sphere. The material of the box 30 can be an alloy material such as an aluminum alloy or a ferrous alloy, a polymer material such as polycarbonate or polyisocyanurate foam plastic, or a composite material such as glass fiber reinforced epoxy resin.

[0086] In some embodiments, the box 30 can include a first box 301 and a second box 302, and the first box 301 and the second box 302 are mutually coverable, and the first box 301 and the second box 302 together define a space for accommodating the battery cells 21. The second box 302 can be a hollow structure with one end open, and the first box 301 can be a plate-shaped structure, and the first box 301 is coverable on the open side of the second box 302 to make the first box 301 and the second box 302 together define the space for accommodating the battery cells 21; the first box 301 and the second box 302 can also be hollow structures with one side open, and the open side of the first box 301 is coverable on the open side of the second box 302.

[0087] The battery cell assembly 20 can include a plurality of battery cells 21, which can be connected in series or in parallel or in a mixed connection to form the battery cell assembly 20, and the plurality of battery cell assemblies 20 are connected in series or in parallel or in a mixed connection to form the battery device 10. The battery cells 21 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, and the present application is not limited thereto. The battery cells 21 are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft package battery cells, and the present application is not limited thereto. However, for the sake of simplicity, the following embodiments will be described taking the square lithium ion battery cells 21 as an example.

[0088] Figure 4The figure is a schematic diagram of the exploded structure of the battery cell 21 provided in some embodiments of the present application. The battery cell 21 refers to the smallest unit that constitutes the battery device 10. Figure 4 The battery cell 21 includes an end cover 211 , a shell 212 and an electrode assembly 213 .

[0089] The end cap 211 refers to a component that covers the opening of the shell 212 to isolate the internal environment of the battery cell 21 from the external environment. Without limitation, the shape of the end cap 211 can be adapted to the shape of the shell 212 to match the shell 212. Optionally, the end cap 211 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 211 is less likely to deform when squeezed or collided, so that the battery cell 21 can have higher structural strength and improved safety performance. Functional components such as electrode terminals 214 can be provided on the end cap 211. The electrode terminal 214 can be used to electrically connect to the electrode assembly 213 for outputting or inputting electrical energy from the battery cell 21. In some embodiments, the end cap 211 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. In some embodiments, an insulating member may be provided inside the end cap 211 to isolate the electrical connection components in the housing 212 from the end cap 211 to reduce the risk of short circuits. For example, the insulating member may be made of plastic, rubber, or the like.

[0090] The housing 212 is a component that cooperates with the end cap 211 to form the internal environment of the battery cell 21. This internal environment can accommodate the electrode assembly 213, electrolyte (not shown), and other components. The housing 212 and the end cap 211 can be separate components. An opening can be provided in the housing 212, and the end cap 211 can be placed over the opening to form the internal environment of the battery cell 21. Alternatively, the end cap 211 and the housing 212 can be integrated. Specifically, the end cap 211 and the housing 212 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 212 is to be enclosed, the end cap 211 is placed over the housing 212. The housing 212 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylinder, or a hexagonal prism. Specifically, the shape of the housing 212 can be determined based on the specific shape and size of the electrode assembly 213. The housing 212 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic.

[0091] The electrode assembly 213 is a component in which an electrochemical reaction occurs in the battery cell 21. One or more electrode assemblies 213 can be included inside the case 212. The electrode assembly 213 is mainly formed by winding or layering a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have portions with active materials that constitute a main body of the electrode assembly 213, and portions without active materials that each constitute a tab (not shown in the figure). The positive electrode tab and the negative electrode tab can be located together at one end of the main body or at opposite ends of the main body. During charging and discharging of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminal 214 to form a current loop.

[0092] In combination Figure 2 , Figures 5 to 13 As shown in FIG. 1, in some embodiments of the present application, the battery device 10 includes at least one battery cell 21 and a relay 40 electrically connected to the battery cell 21. The relay 40 includes a housing 41, a coil assembly 42, a magnet assembly 43, and a plurality of static contacts. The housing 41 has an accommodation cavity formed inside, and the coil assembly 42 is arranged in the accommodation cavity. The coil assembly 42 includes a first coil 4211 and a second coil 4221 that can respectively generate a magnetic field after being energized. The first coil 4211 and the second coil 4221 are arranged along a first direction X. The magnet assembly 43 is arranged in the accommodation cavity. The magnet assembly 43 includes at least one electrically conductive connecting piece 431 arranged between the first coil 4211 and the second coil 4221 along the first direction X. The electrically conductive connecting piece 431 is configured to move along the first direction X under the action of a magnetic field of at least one of the first coil 4211 and the second coil 4221 in an energized state. The axis of at least one of the first coil 4211 and the second coil 4221 is the same as the first direction X. The plurality of static contacts includes at least a first static contact 441 electrically connected to the battery cell 21. The electrically conductive connecting piece 431 is configured to maintain electrical connection with the first static contact 441 within a range of movement along the first direction X.

[0093] For the convenience of description, in some embodiments of the present application, only one electrically conductive connecting piece 431 is exemplified. Specifically, the number of at least one battery cell 21 can be multiple. The multiple battery cells 21 form a battery cell assembly 20 and are electrically connected to the relay 40 through at least one battery cell 21, thereby increasing the output voltage or output current of the battery device 10. Alternatively, the relay 40 can be arranged inside the box 30 and directly connected to the battery cell 21 through an electrically conductive connecting piece, such as an electrically conductive tab. Alternatively, the relay 40 can be arranged inside the box 30 and electrically connected to the battery cell 21 through a fuse.

[0094] The shell 41 comprises a shell body 411 and a bottom plate 412. The shell body 411 is provided with an accommodating cavity with one end opening. The bottom plate 412 is connected to the shell body 411 and is used to block the opening. Optionally, the shell 41 can be made of insulating material, so that the shell 41 has good insulation and can electrically isolate the internal components of the relay 40 from the external components. The shell body 411 is also provided with a first coil connecting port 4111 and a second coil connecting port 4112. The first coil connecting port 4111 is used for the first wire to pass through. The two ends of the first wire are electrically connected to the battery monomer 21 and the first coil 4211 respectively, so as to supply power to the first coil 4211. The second coil connecting port 4112 is used for the second wire to pass through. The two ends of the second wire are electrically connected to the battery monomer 21 and the second coil 4221 respectively, so as to supply power to the second coil 4221.

[0095] The coil assembly 42 at least comprises the first coil 4211 and the second coil 4221. The first coil 4211 and the second coil 4221 respectively have an axial direction, and are in the same straight line. The axial direction of the first coil 4211 and the axial direction of the second coil 4221 are the same, and are collectively referred to as the coil axial direction, and the coil axial direction is the same as the first direction X. The first coil 4211 can generate a magnetic field along the first direction X in the energized state, so as to drive the conductive connecting piece 431 to move along the first direction X. The second coil 4221 can generate a magnetic field along the first direction X in the energized state, so as to drive the conductive connecting piece 431 to move along the first direction X.

[0096] Part of the structure in the magnet assembly 43 has magnetism. The part of the structure with magnetism is driven by the magnetic field of the first coil 4211 and / or the second coil 4221, so as to move along the first direction X. Optionally, the conductive connecting piece 431 itself has magnetism, so as to be directly driven under the action of the magnetic force of the first coil 4211 and / or the second coil 4221. Alternatively, the conductive connecting piece 431 has no magnetism, and the non-magnetic conductive connecting piece 431 is connected with a magnetic part in the magnet assembly 43. The magnetic part is directly driven under the action of the magnetic force of the first coil 4211 and / or the second coil 4221, and drives the conductive connecting piece 431 to move together. For the convenience of description, only the conductive connecting piece 431 with magnetism and capable of being directly driven under the action of the magnetic force of the first coil 4211 and / or the second coil 4221 is described in this application.

[0097] The plurality of static contacts can be respectively used for electrically connecting the conductive connecting piece 431 and the external conductive part, and realizing the conduction of the relay 40. Among them, the plurality of static contacts at least comprises a first static contact 441. The first static contact 441 always maintains electrical connection with the conductive connecting piece 431, and the first static contact 441 is electrically connected with the battery monomer 21.

[0098] According to the battery device 10 of the present application, the conductive connecting piece 431 can be electrically connected with the battery cell 21 through the first stationary contact 441 at all times within the moving range along the first direction X, and can be electrically connected with other stationary contacts during the movement, so as to realize the conduction of the circuit, and the first coil 4211 and the second coil 4221 jointly drive the conductive connecting piece 431 to move along the first direction X, which can improve the moving range of the conductive connecting piece 431 along the first direction X, and compared with driving the conductive connecting piece 431 to move the same range by using a single coil, the power and size of the first coil 4211 and the second coil 4221 can be effectively reduced, so as to reduce the size of the relay 40, and further reduce the size of the battery device 10.

[0099] In combination Figures 5 to 13 As shown in the drawings, in some embodiments of the present application, the plurality of stationary contacts further includes a second stationary contact 442 and a third stationary contact 443, and the conductive connecting piece 431 has a first position in the state that the first coil 4211 is not powered and the second coil 4221 is powered, and when the conductive connecting piece 431 is in the first position, the conductive connecting piece 431 is electrically connected with the second stationary contact 442 and the third stationary contact 443 at the same time.

[0100] Specifically, in the state that the first coil 4211 is not powered and the second coil 4221 is powered, that is, the magnet assembly 43 is not affected by the magnetic field force of the first coil 4211, the magnet assembly 43 moves to the first position under the action of the magnetic field force of the second coil 4221, as shown in the drawings. Figure 10 When the conductive connecting piece 431 is in the first position, the conductive connecting piece 431 is also electrically connected with the second stationary contact 442 and the third stationary contact 443 at the same time. At this time, the first stationary contact 441 serves as the input end of the circuit, and the second stationary contact 442 and the third stationary contact 443 serve as the output end of the circuit respectively, so as to realize the current shunt of the circuit, and further reduce the generation of arc when the relay 40 is broken, reduce the wear or failure of the stationary contact, and improve the working reliability of the battery device 10.

[0101] When the conductive connecting piece 431 is in the first position, the conductive connecting piece 431 is electrically connected with the battery cell 21 through the first stationary contact 441, and the conductive connecting piece 431 is electrically connected with the second stationary contact 442 and the third stationary contact 443 at the same time. At this time, the first stationary contact 441 serves as the input end of the circuit, and the second stationary contact 442 and the third stationary contact 443 serve as the output end of the circuit respectively, so as to realize the current shunt of the circuit, and further reduce the generation of arc when the relay 40 is broken, reduce the wear or failure of the stationary contact, and improve the working reliability of the battery device 10.

[0102] In combination Figures 5 to 13As shown, in some embodiments of the present application, the second stationary contact 442 and the third stationary contact 443 are spaced apart along the second direction Y, and the at least partially conductive connecting piece 431 is arranged between the second stationary contact 442 and the third stationary contact 443 along the second direction Y, and the first direction X and the second direction Y are intersected.

[0103] Specifically, when the conductive connecting piece 431 is in the first position, in order to facilitate the conductive connecting piece 431 to be electrically connected with the second stationary contact 442 and the third stationary contact 443 respectively, the conductive connecting piece 431 is arranged between the second stationary contact 442 and the third stationary contact 443 along the second direction Y, so that the conductive connecting piece 431 can abut against and be electrically connected with the second stationary contact 442 and the third stationary contact 443 along the second direction Y respectively. Optionally, the second direction Y can be the width direction of the shell 41.

[0104] By arranging the at least partially conductive connecting piece 431 between the second stationary contact 442 and the third stationary contact 443 along the second direction Y, it is facilitated that the conductive connecting piece 431 is electrically connected with the second stationary contact 442 and the third stationary contact 443 simultaneously when the conductive connecting piece 431 is in the first position.

[0105] In combination Figures 5 to 13 As shown, in some embodiments of the present application, the conductive connecting piece 431 also has a second position in a state that the first coil 4211 is energized and the second coil 4221 is not energized, and the conductive connecting piece 431 is electrically connected with the second stationary contact 442 when the conductive connecting piece 431 is in the second position.

[0106] Specifically, in the state that the first coil 4211 is energized and the second coil 4221 is not energized, that is, the magnet assembly 43 is not subjected to the magnetic field force of the second coil 4221, the magnet assembly 43 moves to the second position under the action of the magnetic field force of the first coil 4211, as shown in FIG. 4B. Figure 11 As shown, when the conductive connecting piece 431 is in the second position, the conductive connecting piece is electrically connected with the second stationary contact 442.

[0107] In the state that the first coil 4211 is energized and the second coil 4221 is not energized, the conductive connecting piece 431 can move to the second position with the largest interval size from the first position under the action of the attractive force or the repulsive force generated by the first coil 4211, and be electrically connected with the second stationary contact 442 at the second position, so as to conduct the circuit through the first stationary contact 441 and the second stationary contact 442.

[0108] In combination Figures 5 to 13As shown, in some embodiments of the present application, the second stationary contact 442 is provided with a first connecting end 4421 and a second connecting end 4422 on the side facing the magnet assembly 43, the first connecting end 4421 and the second connecting end 4422 are spaced apart and electrically connected along the first direction X, and the conductive connecting piece 431 is electrically connected to the first connecting end 4421 when the conductive connecting piece 431 is in the first position, and is electrically connected to the second connecting end 4422 when the conductive connecting piece 431 is in the second position.

[0109] Specifically, the side of the second stationary contact 442 away from the magnet assembly 43 is electrically connected to the external conductive member, and the side of the second stationary contact 442 facing the magnet assembly 43 is electrically connected to the conductive connecting piece. To facilitate the conductive connecting piece 431 to be electrically connected to the second stationary contact 442 in the first position and the second position respectively, the side of the second stationary contact 442 facing the magnet assembly 43 is provided with a first connecting end 4421 and a second connecting end 4422, the first connecting end 4421 and the second connecting end 4422 are respectively protruding from the end face of the second stationary contact 442 and form a protruding structure.

[0110] By providing the side of the second stationary contact 442 facing the magnet assembly 43 with a first connecting end 4421 and a second connecting end 4422, the conductive connecting piece 431 can be electrically connected to the second stationary contact 442 through the first connecting end 4421 when the conductive connecting piece 431 is in the first position, and can be electrically connected to the second stationary contact 442 through the second connecting end 4422 when the conductive connecting piece 431 is in the second position, so that the conductive connecting piece 431 can be electrically connected to the second stationary contact 442 in the first position or the second position.

[0111] In combination with Figures 5 to 13 As shown, in some embodiments of the present application, the side of the second stationary contact 442 away from the magnet assembly 43 is provided with a first output end 4423, the first output end 4423 is configured to be electrically connected to the external conductive member, and the first output end 4423, the first connecting end 4421 and the second connecting end 4422 are integrally formed.

[0112] Specifically, the side of the second stationary contact 442 away from the magnet assembly 43 extends to the outside of the housing 41 and forms a first output end 4423, and the first output end 4423 is used for electrical connection with the external conductive member. The first output end 4423, the first connecting end 4421 and the second connecting end 4422 are integrally formed. In some other embodiments of the present application, two spaced stationary contacts can also be connected to the conductive member, wherein at least one stationary contact is detachably connected to the conductive member, so that when the two stationary contacts are connected to the conductive member respectively, the second stationary contact 442 is formed, and the second stationary contact 442 has two connecting ends.

[0113] By integrally forming the first output end 4423, the first connecting end 4421 and the second connecting end 4422, the conductive connecting piece 431 can be electrically connected with the second static contact 442 in the first position or the second position, and the number of static contacts can be reduced.

[0114] In combination Figures 5 to 13 As shown in the drawings, in some embodiments of the present application, the conductive connecting piece 431 is located on one side of the second static contact 442 along a third direction Z, and the conductive connecting piece 431 is configured to abut against the first connecting end 4421 along the second direction Y or the third direction Z within a movement range along the first direction X, and the conductive connecting piece 431 is further configured to abut against the second connecting end 4422 along the second direction Y or the third direction Z within the movement range along the first direction X, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0115] Specifically, in order to facilitate the abutment and electrical connection between the conductive connecting piece 431 and the first connecting end 4421, the conductive connecting piece 431 can abut against the first connecting end 4421 along the second direction Y or the third direction Z during movement. In order to facilitate the abutment and electrical connection between the conductive connecting piece 431 and the second connecting end 4422, the conductive connecting piece 431 can abut against the second connecting end 4422 along the second direction Y or the third direction Z during movement. Optionally, the second direction Y can be the width direction of the shell 41, and the third direction Z can be the height direction of the shell 41.

[0116] The conductive connecting piece 431 can abut against the first connecting end 4421 along the second direction Y or the third direction Z, thereby realizing the electrical connection between the conductive connecting piece 431 and the second static contact 442 in the first position. The conductive connecting piece 431 can abut against the second connecting end 4422 along the second direction Y or the third direction Z, thereby realizing the electrical connection between the conductive connecting piece 431 and the second static contact 442 in the second position.

[0117] In combination Figures 5 to 13 As shown in the drawings, in some embodiments of the present application, the magnetic field directions of the first coil 4211 and the second coil 4221 are the same, and the first coil 4211 and the second coil 4221 are arranged along the first direction X, respectively.

[0118] Specifically, the magnetic field directions of the first coil 4211 and the second coil 4221 are the same, and the conductive connecting piece 431 is arranged between the first coil 4211 and the second coil 4221 along the first direction X. When the magnetic field direction of the conductive connecting piece 431 is the same as the magnetic field directions of the first coil 4211 and the second coil 4221, the first coil 4211 and the second coil 4221 respectively generate an attractive force on the conductive connecting piece 431 after being powered on. When the magnetic field direction of the conductive connecting piece 431 is opposite to the magnetic field directions of the first coil 4211 and the second coil 4221, the first coil 4211 and the second coil 4221 respectively generate a repulsive force on the conductive connecting piece 431 after being powered on. Therefore, regardless of the magnetic field direction of the conductive connecting piece 431, the first coil 4211 and the second coil 4221 respectively generate an action force in opposite directions on the conductive connecting piece 431 after being powered on, and the conductive connecting piece 431 moves along the first direction X under the action of the magnetic field force.

[0119] When the first coil 4211 is not powered on and the second coil 4221 is powered on, the conductive connecting piece 431 moves to the first position under the action of the magnetic field of the second coil 4221. Correspondingly, when the first coil 4211 is powered on and the second coil 4221 is not powered on, the conductive connecting piece 431 moves to a position with the largest interval size from the first position, i.e., the second position, under the action of the magnetic field of the first coil 4211. For the convenience of description, in the embodiments of the present application, only the case that the magnetic field direction of the conductive connecting piece 431 is the same as the magnetic field directions generated by the first coil 4211 and the second coil 4221 after being powered on is taken as an example for description, and the conductive connecting piece 431 can move towards the first coil 4211 under the action of the magnetic field of the first coil 4211, and the conductive connecting piece 431 can move towards the second coil 4221 under the action of the magnetic field of the second coil 4221.

[0120] By setting the magnetic field directions of the first coil 4211 and the second coil 4221 to be the same, the first coil 4211 and the second coil 4221 respectively generate an attractive force in different directions on the magnet assembly 43 arranged therebetween after being powered on, or respectively generate a repulsive force in different directions on the magnet assembly 43 arranged therebetween, so as to drive the conductive connecting piece 431 in the magnet assembly 43 to move towards the first coil 4211 or towards the second coil 4221, thereby improving the moving range of the conductive connecting piece 431.

[0121] In combination Figures 5 to 13 As shown in the drawings, in some embodiments of the present application, the magnetic field strength of the first coil 4211 in the powered-on state is less than the magnetic field strength of the second coil 4221 in the powered-on state, and the conductive connecting piece 431 further has a third position in a simultaneous powered-on state of the first coil 4211 and the second coil 4221, and the conductive connecting piece 431 is electrically connected to the third stationary contact 443 when being in the third position.

[0122] Specifically, the magnetic field intensity in the energized state of the first coil 4211 is less than the magnetic field intensity in the energized state of the second coil 4221, that is, in the state that the first coil 4211 and the second coil 4221 are energized at the same time, the attractive force of the second coil 4221 on the conductive connecting piece 431 is greater than the attractive force of the first coil 4211 on the conductive connecting piece 431, therefore, the conductive connecting piece 431 can move to the third position under the joint action of the magnetic field forces of the two coils, as shown in FIG. 4C. When the conductive connecting piece 431 is in the third position, the interval size between the conductive connecting piece 431 and the second coil 4221 is less than the interval size between the conductive connecting piece 431 and the first coil 4211, and the conductive connecting piece 431 is electrically connected with the third static contact 443. Figure 12 In some other embodiments of the present application, the magnetic field direction of the conductive connecting piece 431 is opposite to the magnetic field direction of the first coil 4211 and the second coil 4221, and the magnetic field intensity in the energized state of the first coil 4211 is less than the magnetic field intensity in the energized state of the second coil 4221, in the state that the first coil 4211 and the second coil 4221 are energized at the same time, the repulsive force of the second coil 4221 on the conductive connecting piece 431 is greater than the repulsive force of the first coil 4211 on the conductive connecting piece 431, therefore, the conductive connecting piece 431 can move to the third position under the joint action of the magnetic field forces of the two coils. When the conductive connecting piece 431 is in the third position, the interval size between the conductive connecting piece 431 and the second coil 4221 is greater than the interval size between the conductive connecting piece 431 and the first coil 4211, and the conductive connecting piece 431 is electrically connected with the third static contact 443.

[0123] In the state that the first coil 4211 and the second coil 4221 are energized at the same time, since the magnetic field intensity in the energized state of the first coil 4211 is less than the magnetic field intensity in the energized state of the second coil 4221, the conductive connecting piece 431 moves to the position close to the second coil 4221, that is, the third position, under the joint action of the attractive forces of the first coil 4211 and the second coil 4221, or the conductive connecting piece 431 moves to the position close to the first coil 4211, that is, the third position, under the joint action of the repulsive forces of the first coil 4211 and the second coil 4221, and the conductive connecting piece is electrically connected with the third static contact 443 in the third position, thereby connecting the circuit through the first static contact 441 and the third static contact 443.

[0124] In combination with Figures 5 to 13As shown, in some embodiments of the present application, the third stationary contact 443 is provided with a third connecting end 4431 and a fourth connecting end 4432 on the side facing the magnet assembly 43, the third connecting end 4431 and the fourth connecting end 4432 are spaced apart along the first direction X and electrically connected, and the conductive connecting piece 431 is electrically connected to the third connecting end 4431 when the conductive connecting piece 431 is in the first position, and is electrically connected to the fourth connecting end 4432 when the conductive connecting piece 431 is in the third position.

[0125] Specifically, the side of the third stationary contact 443 away from the magnet assembly 43 is electrically connected to the external conductive member, and the side of the third stationary contact 443 facing the magnet assembly 43 is electrically connected to the conductive connecting piece 431. Among them, in order to facilitate the conductive connecting piece 431 to be electrically connected to the third stationary contact 443 in the first position and the third position respectively, the side of the third stationary contact 443 facing the magnet assembly 43 is provided with a third connecting end 4431 and a fourth connecting end 4432, the third connecting end 4431 and the fourth connecting end 4432 are respectively protruding from the end face of the third stationary contact 443, and form a protruding structure.

[0126] By providing the third connecting end 4431 and the fourth connecting end 4432 on the side of the third stationary contact 443 facing the magnet assembly 43, the conductive connecting piece 431 can be electrically connected to the third stationary contact 443 through the third connecting end 4431 when the conductive connecting piece 431 is in the first position, and the conductive connecting piece 431 can be electrically connected to the third stationary contact 443 through the fourth connecting end 4432 when the conductive connecting piece 431 is in the third position, so that the conductive connecting piece 431 can be electrically connected to the third stationary contact 443 in the first position or the third position.

[0127] In combination with Figures 5 to 13 As shown, in some embodiments of the present application, the side of the third stationary contact 443 away from the magnet assembly 43 is provided with a second output end 4433, the second output end 4433 is configured to be electrically connected to the external conductive member, and the second output end 4433, the third connecting end 4431 and the fourth connecting end 4432 are integrally formed.

[0128] Specifically, the side of the third stationary contact 443 away from the magnet assembly 43 extends to the outside of the housing 41 and forms a second output end 4433, and the second output end 4433 is used for electrically connecting the external conductive member. Among them, the second output end 4433, the third connecting end 4431 and the fourth connecting end 4432 are integrally formed. In some other embodiments of the present application, two spaced stationary contacts can also be connected to the conductive member, wherein at least one stationary contact is detachably connected to the conductive member, so that when the two stationary contacts are connected to the conductive member respectively, the third stationary contact 443 is formed, and the third stationary contact 443 has two connecting ends.

[0129] By integrally forming the second output end 4433, the third connecting end 4431 and the fourth connecting end 4432, the conductive connecting piece 431 can be electrically connected with the third static contact 443 in the first position or the third position, and the number of static contacts can be reduced.

[0130] In combination Figures 5 to 13 As shown in some embodiments of the present application, the conductive connecting piece 431 is arranged on one side of the third static contact 443 along the third direction Z, and the conductive connecting piece 431 is configured to abut against the third connecting end 4431 along the second direction Y or the third direction Z within a movement range along the first direction X, and the conductive connecting piece 431 is further configured to abut against the fourth connecting end 4432 along the second direction Y or the third direction Z within the movement range along the first direction X, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0131] Specifically, in order to facilitate the abutment and electrical connection between the conductive connecting piece 431 and the third connecting end 4431, the conductive connecting piece 431 can abut against the third connecting end 4431 along the second direction Y or the third direction Z during movement. In order to facilitate the abutment and electrical connection between the conductive connecting piece 431 and the fourth connecting end 4432, the conductive connecting piece 431 can abut against the fourth connecting end 4432 along the second direction Y or the third direction Z during movement. Optionally, the second direction Y can be the width direction of the shell 41, and the third direction Z can be the height direction of the shell 41.

[0132] The conductive connecting piece 431 can abut against the third connecting end 4431 along the second direction Y or the third direction Z, thereby realizing the electrical connection between the conductive connecting piece 431 and the third static contact 443 in the first position. The conductive connecting piece 431 can abut against the fourth connecting end 4432 along the second direction Y or the third direction Z, thereby realizing the electrical connection between the conductive connecting piece 431 and the third static contact 443 in the third position.

[0133] In combination Figures 5 to 13 As shown in some embodiments of the present application, the relay 40 further comprises an elastic member 432, at least part of the elastic member 432 is arranged on one side of the conductive connecting piece 431 facing the first coil 4211, and the conductive connecting piece 431 further has a fourth position in a natural state of the elastic member 432 when neither the first coil 4211 nor the second coil 4221 is energized, and the conductive connecting piece 431 is disconnected from the second static contact 442 and the third static contact 443 in the fourth position.

[0134] Specifically, the elastic member 432 is arranged on the side of the conductive connecting member 431 facing the first coil 4211 and abuts against the coil assembly 42 or other support members, thereby providing elastic force for the conductive connecting member 431. When at least one of the first coil 4211 and the second coil 4221 is in an energized state, the conductive connecting member 431 is moved in the first direction X under the magnetic field force, in the process, the elastic member 432 is stretched or compressed to generate elastic force, when the first coil 4211 and the second coil 4221 are both de-energized, the elastic member 432 restores to the natural state by its own elastic deformation and drives the conductive connecting member 431 to move to the fourth position, and when the conductive connecting member 431 is in the fourth position, it is disconnected from the second static contact 442 and the third static contact 443, respectively. The fourth position is arranged between the second position and the third position, as shown in Figure 13

[0135] When neither the first coil 4211 nor the second coil 4221 is energized, the conductive connecting member 431 is not subjected to the magnetic field force, the elastic member 432 arranged on the conductive connecting member 431 restores to the natural state, i.e., the state of not being compressed or stretched, the conductive connecting member 431 moves to the fourth position under the action of the elastic member 432, and when the conductive connecting member 431 is in the fourth position, it is disconnected from the second static contact 442 and the third static contact 443, respectively, i.e., the relay 40 cannot be used to conduct the circuit.

[0136] In combination with Figures 5 to 13 In some embodiments of the present application, the conductive connecting member 431 is configured to move towards the first coil 4211 when the first coil 4211 is energized and the second coil 4221 is not energized, and the conductive connecting member 431 is also configured to move towards the second coil 4221 when the first coil 4211 is not energized and the second coil 4221 is energized.

[0137] Specifically, the conductive connecting member 431 can move to the second position in the direction of the first coil 4211 under the magnetic field force of the first coil 4211, the conductive connecting member 431 can move to the first position in the direction of the first coil 4211 under the magnetic field force of the second coil 4221, and the conductive connecting member 431 can move to the third position under the combined action of the magnetic field forces of the first coil 4211 and the second coil 4221.

[0138] ​In the state that the first coil 4211 is energized and the second coil 4221 is not energized, the conductive connecting piece 431 moves towards the first coil 4211 under the action of the magnetic force of the first coil 4211, that is, the first coil 4211 generates an attractive force to the conductive connecting piece 431 in the energized state. In the state that the first coil 4211 is not energized and the second coil 4221 is energized, the conductive connecting piece 431 moves towards the second coil 4221 under the action of the magnetic force of the second coil 4221, that is, the second coil 4221 generates an attractive force to the conductive connecting piece 431 in the energized state.

[0139] In combination Figures 5 to 13 As shown in some embodiments of the present application, the magnetic field directions of the first coil 4211, the second coil 4221 and the conductive connecting piece 431 are the same, and are arranged along the first direction X respectively.

[0140] Specifically, the magnetic field directions of the first coil 4211, the second coil 4221 and the conductive connecting piece 431 are the same, and any one of the first coil 4211 and the second coil 4221 in the energized state can generate an attractive force to the conductive connecting piece 431.

[0141] By setting the magnetic field directions of the first coil 4211, the second coil 4221 and the conductive connecting piece 431 to be the same, the first coil 4211 and the second coil 4221 are respectively used to generate an attractive force to the conductive connecting piece 431, and drive the conductive connecting piece 431 to move along the first direction X.

[0142] In combination Figures 5 to 13 As shown in some embodiments of the present application, the magnet assembly 43 further comprises a mounting plate 433, the conductive connecting piece 431 is arranged between the mounting plate 433 and the at least part of the plurality of static contacts along the third direction Z, the side of the mounting plate 433 facing the static contacts is provided with a guide structure 4331 extending along the first direction X, the conductive connecting piece 431 is connected with the guide structure 4331 in a manner capable of sliding along the first direction X, and the conductive connecting piece 431 is electrically connected with the first static contact 441 through the guide structure 4331, the third direction Z intersects with the first direction X.

[0143] Specifically, the mounting plate 433 is a plate structure, and the surface of the mounting plate 433 facing the plurality of static contacts is provided with the guide structure 4331. The guide structure 4331 extends along the first direction X, and the conductive connecting piece 431 is arranged on the surface of the mounting plate 433 facing the plurality of static contacts and can cooperate with the guide structure 4331. The first static contact 441 is arranged on the mounting plate 433, including but not limited to being welded to the plate surface of the mounting plate 433, or being fixed to the plate surface of the mounting plate 433 through a connecting piece, and being kept in electrical connection with the conductive connecting piece 431 at all times through the guide structure 4331.

[0144] The conductive connecting piece 431 cooperates with the guide structure 4331 and is movable along the first direction X, and is electrically connected with the first stationary contact 441 through the guide structure 4331 during the movement of the conductive connecting piece 431 along the first direction X, so that the relay 40 is able to conduct a circuit when the conductive connecting piece 431 contacts any one of the second stationary contact 442 and the third stationary contact 443 during the movement.

[0145] In combination Figures 5 to 13 As shown in some embodiments of the present application, the mounting plate 433 is a metal plate, the first stationary contact 441 is fixed to the mounting plate 433, and part of the mounting plate 433 is protrudingly arranged along the third direction Z and forms the guide structure 4331, and the conductive connecting piece 431 is formed with a sliding groove matched with the guide structure 4331.

[0146] Specifically, the mounting plate 433 is a metal plate with electrical conductivity, and part of the mounting plate 433 is protrudingly arranged along the direction of the plurality of stationary contacts and forms a strip-shaped guide structure 4331. The first stationary contact 441 can be directly electrically connected with the mounting plate 433, so as to be electrically connected with the conductive connecting piece 431 through the guide structure 4331 at all times. Alternatively, the first stationary contact 441 can be welded to the surface of the mounting plate 433 facing the plurality of stationary contacts.

[0147] The first stationary contact 441 can be directly connected with the metal plate, that is, the electrical connection between the first stationary contact 441 and the guide structure 4331 can be achieved, so as to reduce the setting of the conductive circuit and simplify the conductive structure of the first stationary contact 441 and the conductive connecting piece 431.

[0148] In combination Figures 5 to 13 As shown in some embodiments of the present application, the conductive connecting piece 431 includes an armature with electrical conductivity.

[0149] Specifically, the armature has magnetic and conductive properties. When the first coil 4211 and / or the second coil 4221 is in an energized state, the magnetic field generated by the first coil 4211 and / or the second coil 4221 can directly act on the conductive connecting piece 431 and drive the conductive connecting piece 431 to move along the first direction X.

[0150] In some other embodiments of the present application, a support connected with the conductive connecting piece 431 can also be provided, wherein the conductive connecting piece 431 is a metal conductive piece, the support is an armature, and an insulating piece is arranged between the conductive connecting piece 431 and the support to reduce the occurrence of short circuit. The support is able to move along the first direction X under the action of the magnetic field of the first coil 4211 and / or the second coil 4221 in an energized state, and drive the conductive connecting piece 431 to move together.

[0151] The armature has magnetism and can move under the action of the magnetic field generated by the energized coil. The armature also has electrical conductivity and can maintain electrical connection with the first stationary contact 441.

[0152] In combination Figures 5 to 13 As shown in some embodiments of the present application, the magnet assembly 43 further comprises a ceramic housing 434, and the conductive connecting piece 431 is arranged inside the ceramic housing 434.

[0153] Specifically, the ceramic housing 434 has insulation and can effectively reduce the arc generated when the stationary contact is broken, which can break through the ceramic housing 434. The inside of the ceramic housing 434 is formed with an accommodating cavity, and the conductive connecting piece 431 is arranged in the accommodating cavity and can move in the first direction X in the accommodating cavity.

[0154] By arranging the conductive connecting piece 431 inside the ceramic housing 434, the conductive connecting piece 431 can be effectively isolated from the arc generated when the stationary contact is broken, reducing the arc breaking through the ceramic housing 434 and causing damage to other components in the relay 40. At the same time, the integration of the magnet assembly 43 is improved, and the conductive connecting piece 431 can be arranged inside the ceramic housing 434 during assembly, and then the ceramic housing 434 is assembled into the relay 40, thereby facilitating the modular assembly of the relay 40.

[0155] In combination Figures 5 to 13 As shown in some embodiments of the present application, the ceramic housing 434 comprises a body portion 4341 and first and second sealing plates 4342 and 4343. The body portion 4341 is arranged to form a mounting cavity with openings at both ends in the first direction X. The first and second sealing plates 4342 and 4343 are connected to the body portion 4341 and block the openings at both ends, respectively. The conductive connecting piece 431 is arranged in the mounting cavity and projects within the projection range of the first and second sealing plates 4342 and 4343 in the first direction X.

[0156] Specifically, the ceramic housing 434 comprises a body portion 4341, a first sealing plate 4342 and a second sealing plate 4343. The body portion 4341 is arranged to form a mounting cavity with openings at both ends in the first direction X. The first and second sealing plates 4342 and 4343 are arranged at the openings at both ends of the body portion 4341 in the first direction X, respectively, and are connected to the body portion 4341, respectively, and are used to block the openings at both ends of the body portion 4341. Optionally, the first and second sealing plates 4342 and 4343 are ceramic sealing plates, respectively.

[0157] By arranging the electrically conductive connecting piece 431 in the mounting cavity and projecting the electrically conductive connecting piece 431 in the projection range of the first sealing plate 4342 and the second sealing plate 4343 respectively, that is, arranging the electrically conductive connecting piece 431 completely inside the ceramic shell 434, the electrically conductive connecting piece 431 can be effectively isolated from the electric arc generated when the static contact is broken by the ceramic shell 434.

[0158] In combination Figures 5 to 13 As shown in some embodiments of the present application, the magnet assembly 43 further comprises at least one magnet 435, the magnet 435 is arranged outside the ceramic shell 434, and the magnetic field direction of the magnet 435 is perpendicular to the first direction X respectively.

[0159] Specifically, the magnet 435 is arranged outside the ceramic shell 434 along a direction perpendicular to the first direction X, that is, along a direction perpendicular to the axial direction of the first coil 4211 and the axial direction of the second coil 4221. Optionally, the magnet 435 can be directly attached outside the ceramic shell 434, such as bonding, or the magnet 435 can be arranged on the support plate 436, and the support plate 436 is arranged outside the ceramic shell 434, such as connecting the support plate 436 with the inner wall surface of the shell 41. Optionally, the number of support plates 436 can be multiple, and are arranged outside the ceramic shell 434 at intervals, and any one of the support plates 436 is respectively provided with multiple magnets 435.

[0160] By arranging the magnet 435 outside the ceramic shell 434, when the electrically conductive connecting piece 431 is broken with the static contact to generate an electric arc, the magnet 435 can generate a magnetic field perpendicular to the first direction X, the electric arc current interacts with the magnetic field to generate a force to push the electric arc to move, so as to stretch outward and cool down and extinguish, thereby achieving the purpose of magnetic blowout arc extinguishing.

[0161] In combination Figures 5 to 13 As shown in some embodiments of the present application, the coil assembly 42 comprises a first coil assembly 421 and a second coil assembly 422, wherein the first coil assembly 421 comprises a first shell 4212 and a first coil 4211 arranged in the first shell 4212, the second coil assembly 422 comprises a second shell 4222 and a second coil 4221 arranged in the second shell 4222, the first shell 4212 and the second shell 4222 are arranged at intervals along the first direction X, and the magnet assembly 43 is arranged between the first shell 4212 and the second shell 4222 along the first direction Y.

[0162] Specifically, the coil assembly 42 comprises a first coil assembly 421 and a second coil assembly 422. The first coil assembly 421 comprises a first shell 4212 and a first coil 4211 arranged in the first shell 4212. The first shell 4212 is internally provided with a mounting cavity, and the first coil 4211 is arranged in the mounting cavity. Optionally, the first coil assembly 421 further comprises a first iron core fixed in the mounting cavity, and the first coil 4211 is wound around the outer circumferential surface of the first iron core. Optionally, the first shell 4212 can be an insulating piece, so as to reduce the short circuit phenomenon between the first shell 4212 and the first coil 4211 after being electrified.

[0163] The second coil assembly 422 comprises a second shell 4222 and a second coil 4221 arranged in the second shell 4222. The second shell 4222 is internally provided with a mounting cavity, and the second coil 4221 is arranged in the mounting cavity. Optionally, the second coil assembly 422 further comprises a second iron core fixed in the mounting cavity, and the second coil 4221 is wound around the outer circumferential surface of the second iron core. Optionally, the second shell 4222 can be an insulating piece, so as to reduce the short circuit phenomenon between the second shell 4222 and the second coil 4221 after being electrified.

[0164] By arranging the first coil 4211 in the interior of the first shell 4212, the first coil 4211 can generate a magnetic field when electrified, so as to drive the conductive connecting piece 431 to move along the first direction X, and meanwhile, the integration of the first coil assembly 421 can be improved. When assembling, the first coil 4211 can be arranged in the interior of the first shell 4212 first, and then the first shell 4212 is assembled into the relay 40, so as to facilitate the modular assembly of the relay 40. By arranging the second coil 4221 in the interior of the second shell 4222, the second coil 4221 can generate a magnetic field when electrified, so as to drive the conductive connecting piece 431 to move along the second direction Y, and meanwhile, the integration of the second coil assembly 422 can be improved. When assembling, the second coil 4221 can be arranged in the interior of the second shell 4222 first, and then the second shell 4222 is assembled into the relay 40, so as to facilitate the modular assembly of the relay 40.

[0165] In combination with Figures 5 to 14 As shown in the drawings, in some embodiments of the present application, the relay 40 further comprises a plurality of connecting pieces, and the plurality of connecting pieces are respectively connected in one-to-one correspondence with the plurality of static contacts.

[0166] Specifically, the connecting pieces are conductive pieces, including a first connecting piece 451, a second connecting piece 452, and a third connecting piece 453. The first connecting piece 451 can be fixed to one side of the first stationary contact 441 away from the conductive connecting piece 431 by a bolt, and is in contact and conductive connection with the first stationary contact 441. The second connecting piece 452 can be fixed to one side of the second stationary contact 442 away from the conductive connecting piece 431 by a bolt, and is in contact and conductive connection with the second stationary contact 442. The third connecting piece 453 can be fixed to one side of the third stationary contact 443 away from the conductive connecting piece 431 by a bolt, and is in contact and conductive connection with the third stationary contact 443.

[0167] By arranging multiple connecting pieces, the relay 40 can be electrically connected to the battery monomer 21 through a part of the connecting pieces, and the relay 40 can also be electrically connected to other electrical devices through another part of the connecting pieces, thereby completing the power supply to the other electrical devices.

[0168] In combination Figures 5 to 13 As shown, in some embodiments of the present application, at least one connecting piece includes a first connecting portion 4521, a transition portion 4522, and a second connecting portion 4523 arranged in sequence, and the first connecting portion 4521 and the second connecting portion 4523 are respectively arranged on opposite sides of the plate surface of the transition portion 4522.

[0169] For the sake of convenience, the present application only takes the second connecting piece 452 as an example for description.

[0170] Specifically, the second connecting piece 452 is a generally Z-shaped structure, including a first connecting portion 4521, a transition portion 4522, and a second connecting portion 4523 arranged in sequence. One of the first connecting portion 4521 and the second connecting portion 4523 is electrically connected to the second stationary contact 442, and the other of the first connecting portion 4521 and the second connecting portion 4523 is electrically connected to other electrical devices. Optionally, the structures of the first connecting piece 451, the second connecting piece 452, and the third connecting piece 453 can be consistent or inconsistent.

[0171] Optionally, the first connecting portion 4521 and the second connecting portion 4523 are symmetrically arranged about the center of the transition portion 4522. Among them, the structures of the first connecting portion 4521 and the second connecting portion 4523 are consistent.

[0172] By symmetrically arranging the first connecting portion 4521 and the second connecting portion 4523 about the center of the transition portion 4522, when the second stationary contact 442 is connected to other electrical devices through the second connecting piece 452, any one of the first connecting portion 4521 and the second connecting portion 4523 can be connected to the second stationary contact 442, and the other of the first connecting portion 4521 and the second connecting portion 4523 can be connected to other electrical devices, thereby improving the convenience of use of the second connecting piece 452.

[0173] By arranging the first connecting portion 4521 and the second connecting portion 4523 on opposite sides of the plate surface of the transition portion 4522, the connecting sheet can be electrically connected to the static contact through the first connecting portion 4521 and the second connecting portion 4523 on either side of the transition portion, thereby facilitating electrical connection between the connecting sheet and the static contact.

[0174] In some embodiments of the present application, The plate surface of the first connecting portion 4521 is provided with a plurality of first connecting holes 4524; and / or, The plate surface of the second connecting portion 4523 is provided with a plurality of first connecting holes 4524.

[0175] Specifically, the first connecting hole 4524 is a through hole. Optionally, the plate surface of the first connecting portion 4521 and the second connecting portion 4523 is provided with two first connecting holes 4524, respectively. When the first connecting portion 4521 is connected to the second static contact 442, one of the two first connecting holes 4524 can be selectively connected to the second static contact 442, thereby facilitating adjustment of the mounting position of the second connecting sheet 452.

[0176] By providing a plurality of first connecting holes 4524, the first connecting portion 4521 can selectively use any one of the first connecting holes 4524 to connect to the static contact, or the second connecting portion 4523 can selectively use any one of the first connecting holes 4524 to connect to the static contact, thereby facilitating electrical connection between the connecting sheet and the static contact.

[0177] In some embodiments of the present application, the side surface of the first connecting portion 4521 is provided with a positioning protrusion 4525, which can abut against other components, thereby positioning the first connecting portion 4521 and reducing rotation and displacement of the second connecting sheet 452.

[0178] In some embodiments of the present application, the side surface of the second connecting portion 4523 is provided with a positioning protrusion 4525, which can abut against other components, thereby positioning the second connecting portion 4523 and reducing rotation and displacement of the second connecting sheet 452.

[0179] By providing the positioning protrusion 4525, the positioning protrusion 4525 can abut against the housing 41 or other components, thereby positioning the first connecting portion 4521 and / or the second connecting portion 4523 and reducing rotation and displacement of the connecting sheet.

[0180] In combination Figures 5 to 13 As shown, in some embodiments of the present application, the number of conductive connecting members 431 is at least two, and the at least two conductive connecting members 431 are respectively configured to maintain electrical connection with the first static contact 441 within the movement range along the first direction X.

[0181] For the convenience of description, only two conductive connecting pieces 431 are taken as an example in the embodiment.

[0182] Specifically, the two conductive connecting pieces 431 are arranged between the first coil 4211 and the second coil 4221 along the first direction X, wherein the two conductive connecting pieces 431 can be independently arranged and respectively capable of moving along the first direction X under the magnetic field of the first coil 4211 and / or the second coil 4221. Alternatively, the two conductive connecting pieces 431 can be connected by a connecting piece and jointly capable of moving along the first direction X under the magnetic field of the first coil 4211 and / or the second coil 4221. The connecting piece can be a conductive piece or a non-conductive piece. When the connecting piece is a conductive piece, the two conductive connecting pieces 431 connected by the connecting piece are equivalent to one conductive connecting piece 431. When the connecting piece is a non-conductive piece, such as a plastic or ceramic connecting piece, the two conductive connecting pieces 431 can be respectively used to conduct the circuit. Alternatively, when one of the conductive connecting pieces 431 is in the first position and respectively electrically connected with the second static contact 442 and the third static contact 443, and the other conductive connecting piece 431 is in the fourth position, the relay 40 only conducts the circuit through one of the conductive connecting pieces 431. Alternatively, when one of the conductive connecting pieces 431 is in the second position or the third position, and the other conductive connecting piece 431 is in the fourth position, the relay 40 only conducts the circuit through one of the conductive connecting pieces 431. Alternatively, when one of the conductive connecting pieces 431 is in the second position, and the other conductive connecting piece 431 is in the third position, the relay 40 conducts the circuit through the two conductive connecting pieces 431 together, and can achieve shunt.

[0183] By arranging at least two conductive connecting pieces 431, and at least two conductive connecting pieces 431 respectively maintaining electrical connection with the first static contact 441, at least one of the at least two conductive connecting pieces 431 can be electrically connected with other static contacts except the first static contact 441, thereby realizing the conduction of the relay 40, or the at least two conductive connecting pieces 431 can be respectively electrically connected with different static contacts except the first static contact 441, thereby conducting the circuit through multiple different static contacts, and realizing the shunt of the relay 40.

[0184] In combination Figure 1As shown in the drawings, in some embodiments of the present application, the relay 40 further comprises a first electric control board 461 and a second electric control board 462, which are respectively arranged in the accommodating cavity of the shell 41. The first electric control board 461 is electrically connected with the first coil 4211 and is used for controlling the input of current to the first coil 4211. The second electric control board 462 is electrically connected with the second coil 4221 and is used for controlling the input of current to the second coil 4221, so as to drive the conductive connecting piece 431 to move by the magnetic field generated by the first coil 4211 and / or the second coil 4221, thereby controlling the communication mode or the disconnection of the circuit of the relay 40. Optionally, the first wire is electrically connected with the first coil 4211 through the first electric control board 461, and the second wire is electrically connected with the second coil 4221 through the second electric control board 462.

[0185] In combination Figure 2 , Figures 5 to 13 , Figure 1 As shown in the drawings, in the second aspect, the present application provides a power consumption device, which comprises the battery device 10 of any of the above embodiments.

[0186] Since the power consumption device in the present application has the same technical features as the battery device 10 of any of the above embodiments, the same technical effects can be achieved, and here it will not be repeated.

[0187] As Figure 2 shown, in some embodiments of the present application, the power consumption device can be a vehicle 1, which comprises the battery device 10 of any of the above embodiments. The battery device 10 is used for providing electric energy for the vehicle 1 and is used for driving the vehicle 1 to walk.

[0188] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application, the above description can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described.

[0189] In combination Figures 5 to 14 , ​As shown, in some embodiments of the present application, the battery device 10 comprises at least one battery cell 21 and a relay 40 electrically connected with the battery cell 21, the relay 40 comprises a housing 41, a coil assembly 42, a magnet assembly 43 and a plurality of static contacts, the housing 41 has an accommodating cavity formed in the interior thereof, the coil assembly 42 is arranged in the accommodating cavity, the coil assembly 42 comprises a first coil 4211 and a second coil 4221 which can respectively generate a magnetic field after being energized, the first coil 4211 and the second coil 4221 are arranged in a first direction X, the magnet assembly 43 is arranged in the accommodating cavity, the magnet assembly 43 comprises at least one electrically conductive connecting piece 431, the electrically conductive connecting piece 431 is arranged between the first coil 4211 and the second coil 4221 along the first direction X and is configured to be capable of moving along the first direction X under the action of the magnetic field of the energized state of at least one of the first coil 4211 and the second coil 4221, the axis of at least one of the first coil 4211 and the second coil 4221 is the same as the first direction X, the plurality of static contacts comprises at least a first static contact 441, the first static contact 441 is electrically connected with the battery cell 21, and the electrically conductive connecting piece 431 is configured to maintain electrical connection with the first static contact 441 within the moving range along the first direction X.

[0190] Optionally, the plurality of static contacts further comprises a second static contact 442 and a third static contact 443, the electrically conductive connecting piece 431 has a first position in the state that the first coil 4211 is not energized and the second coil 4221 is energized, and when the electrically conductive connecting piece 431 is in the first position, the electrically conductive connecting piece 431 is electrically connected with the second static contact 442 and the third static contact 443 at the same time.

[0191] Optionally, the second static contact 442 and the third static contact 443 are arranged in a second direction Y, at least part of the electrically conductive connecting piece 431 is arranged between the second static contact 442 and the third static contact 443 along the second direction Y, and the first direction X and the second direction Y intersect.

[0192] Optionally, the electrically conductive connecting piece 431 further has a second position in the state that the first coil 4211 is energized and the second coil 4221 is not energized, and when the electrically conductive connecting piece 431 is in the second position, the electrically conductive connecting piece 431 is electrically connected with the second static contact.

[0193] Optionally, the second static contact 442 is provided with a first connecting end 4421 and a second connecting end 4422 on the side facing the magnet assembly 43, the first connecting end 4421 and the second connecting end 4422 are arranged in the first direction X and are electrically connected, and when the electrically conductive connecting piece 431 is in the first position, the electrically conductive connecting piece 431 is electrically connected with the first connecting end 4421, and when the electrically conductive connecting piece 431 is in the second position, the electrically conductive connecting piece 431 is electrically connected with the second connecting end 4422.

[0194] Optionally, the second static contact 442 is provided with a first output end 4423 on the side away from the magnet assembly 43, the first output end 4423 is configured to be electrically connected with an external conductive part, and the first output end 4423, the first connecting end 4421 and the second connecting end 4422 are integrally formed.

[0195] Optionally, the conductive connecting part 431 is arranged on one side of the second static contact 442 along the third direction Z, the conductive connecting part 431 is configured to abut against the first connecting end 4421 along the second direction Y or the third direction Z within a moving range along the first direction X, and the conductive connecting part 431 is further configured to abut against the second connecting end 4422 along the second direction Y or the third direction Z within the moving range along the first direction X, and the first direction, the second direction Y and the third direction Z are perpendicular to each other.

[0196] Optionally, the magnetic field directions of the first coil 4211, the second coil 4221 and the conductive connecting part 431 are the same, and the first coil 4211, the second coil 4221 and the conductive connecting part 431 are arranged along the first direction X respectively.

[0197] Optionally, the magnetic field intensity of the first coil 4211 in the energized state is less than the magnetic field intensity of the second coil 4221 in the energized state, the conductive connecting part 431 further has a third position in the state that the first coil 4211 and the second coil 4221 are simultaneously energized, and the conductive connecting part 431 is electrically connected with the third static contact 443 when being in the third position.

[0198] Optionally, the third static contact 443 is provided with a third connecting end 4431 and a fourth connecting end 4432 on the side facing the magnet assembly 43, the third connecting end 4431 and the fourth connecting end 4432 are arranged along the first direction X and electrically connected, and the conductive connecting part 431 is electrically connected with the third connecting end 4431 when being in the first position, and the conductive connecting part 431 is electrically connected with the fourth connecting end 4432 when being in the third position.

[0199] Optionally, the third static contact 443 is provided with a second output end 4433 on the side away from the magnet assembly 43, the second output end 4433 is configured to be electrically connected with an external conductive part, and the second output end 4433, the third connecting end 4431 and the fourth connecting end 4432 are integrally formed.

[0200] Optionally, the conductive connecting part 431 is arranged on one side of the third static contact 443 along the third direction Z, the conductive connecting part 431 is configured to abut against the third connecting end 4431 along the second direction Y or the third direction Z within a moving range along the first direction X, and the conductive connecting part 431 is further configured to abut against the fourth connecting end 4432 along the second direction Y or the third direction Z within the moving range along the first direction X.

[0201] Optionally, the relay 40 further comprises an elastic member 432, at least part of the elastic member 432 is arranged on a side of the conductive connecting member 431 facing the first coil 4211, the conductive connecting member 431 further has a fourth position in a state that neither the first coil 4211 nor the second coil 4221 is energized and the elastic member 432 is in a natural state, and the conductive connecting member 431 is disconnected from the second static contact 442 and the third static contact 443 respectively when being in the fourth position.

[0202] Optionally, the conductive connecting member 431 is configured to move towards the first coil 4211 in a state that the first coil 4211 is energized and the second coil 4221 is not energized, and the conductive connecting member 431 is further configured to move towards the second coil 4221 in a state that the first coil 4211 is not energized and the second coil 4221 is energized.

[0203] Optionally, the magnet assembly 43 further comprises a mounting plate 433, the conductive connecting member 431 is arranged between the mounting plate 433 and the at least part of the static contacts along the third direction Z, a side of the mounting plate 433 facing the static contacts is provided with a guide structure 4331 extending along the first direction X, the conductive connecting member 431 is connected with the guide structure 4331 in a manner that can slide along the first direction X, and the conductive connecting member 431 is electrically connected with the first static contact 441 through the guide structure 4331.

[0204] Optionally, the mounting plate 433 is a metal plate, the first static contact 441 is fixed on the mounting plate 433, part of the mounting plate 433 is arranged protruding along the third direction Z and forms the guide structure 4331, and the conductive connecting member 431 is formed with a sliding groove matched with the guide structure 4331.

[0205] Optionally, the conductive connecting member 431 comprises an armature having electrical conductivity.

[0206] Optionally, the magnet assembly 43 further comprises a ceramic housing 434, and the conductive connecting member 431 is arranged inside the ceramic housing 434.

[0207] Optionally, the ceramic housing 434 comprises a body portion 4341 and first and second sealing plates 4342 and 4343, the body portion 4341 is arranged to form an installation cavity having two ends respectively provided with openings along the first direction X, the first and second sealing plates 4342 and 4343 are respectively connected with the body portion 4341 and block the openings at the two ends, the conductive connecting member 431 is arranged in the installation cavity and the projection of the conductive connecting member 431 is respectively within the projection range of the first and second sealing plates 4342 and 4343 along the first direction X.

[0208] Optionally, the magnet assembly 43 further comprises at least one magnet 435, the magnet 435 is arranged outside the ceramic housing 434, and the magnetic field direction of the magnet 435 is perpendicular to the first direction X respectively.

[0209] Optionally, the coil assembly 42 comprises a first coil assembly 421 and a second coil assembly 422, wherein the first coil assembly 421 comprises a first housing 4212 and a first coil 4211 arranged in the first housing 4212, and the second coil assembly 422 comprises a second housing 4222 and a second coil 4221 arranged in the second housing 4222; the first housing 4212 and the second housing 4222 are arranged in the first direction X; and the magnet assembly 43 is arranged between the first housing 4212 and the second housing 4222 in the first direction X.

[0210] Optionally, the relay 40 further comprises a plurality of connecting pieces, and the plurality of connecting pieces are respectively connected to the plurality of static contacts in one-to-one correspondence.

[0211] Optionally, the at least one connecting piece comprises a first connecting portion 4521, a transition portion 4522 and a second connecting portion 4523 arranged in sequence, and the first connecting portion 4521 and the second connecting portion 4523 are respectively arranged on opposite sides of the plate surface of the transition portion 4522.

[0212] Optionally, the plate surface of the first connecting portion 4521 is provided with a plurality of first connecting holes 4524. The plate surface of the second connecting portion 4523 is provided with a plurality of first connecting holes 4524. The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery device, characterized in that: include: at least one battery cell; a relay, electrically connected to the battery cell; Wherein, the relay comprises: a housing, wherein a receiving cavity is formed inside the housing; a coil assembly disposed in the accommodating cavity, the coil assembly comprising a first coil and a second coil capable of generating a magnetic field respectively when energized, the first coil and the second coil being spaced apart along a first direction; a magnet assembly disposed in the accommodating cavity, the magnet assembly comprising at least one conductive connector disposed between the first coil and the second coil along the first direction and configured to move along the first direction under the action of a magnetic field in an energized state of at least one of the first coil and the second coil, wherein an axial direction of at least one of the first coil and the second coil is aligned with the first direction; A plurality of static contacts, the plurality of static contacts including at least a first static contact, the first static contact being electrically connected to the battery cell, and the conductive connector being configured to maintain electrical connection with the first static contact within a range of movement along the first direction.

2. The battery device according to claim 1, wherein: The multiple static contacts also include a second static contact and a third static contact, and the conductive connecting member has a first position when the first coil is not energized and the second coil is energized, and when the conductive connecting member is in the first position, the conductive connecting member is electrically connected to the second static contact and the third static contact at the same time.

3. The battery device according to claim 2, characterized in that The second stationary contact and the third stationary contact are spaced apart along a second direction, at least part of the conductive connecting member is arranged between the second stationary contact and the third stationary contact along the second direction, and the first direction and the second direction intersect.

4. The battery device according to claim 2, wherein: The conductive connecting member further has a second position when the first coil is energized and the second coil is not energized, and the conductive connecting member is electrically connected to the second static contact when in the second position.

5. The battery device according to claim 4, characterized in that The second static contact is provided with a first connection end and a second connection end on the side facing the magnet assembly. The first connection end and the second connection end are spaced apart along the first direction and are electrically connected. When the conductive connecting member is in the first position, it is electrically connected to the first connection end. When the conductive connecting member is in the second position, it is electrically connected to the second connection end.

6. The battery device according to claim 5, characterized in that A first output end is provided on a side of the second static contact away from the magnet assembly. The first output end is configured to be electrically connected to an external conductive member. The first output end, the first connecting end and the second connecting end are integrally formed.

7. The battery device according to claim 5, characterized in that The conductive connecting member is arranged on one side of the second static contact along the third direction, and the conductive connecting member is configured to be able to abut against the first connecting end along the second direction or the third direction within the moving range along the first direction. The conductive connecting member is also configured to be able to abut against the second connecting end along the second direction or the third direction within the moving range along the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.

8. The battery device according to claim 2, wherein: The magnetic field directions of the first coil and the second coil are the same and are respectively arranged along the first direction.

9. The battery device according to claim 8, characterized in that The magnetic field strength when the first coil is energized is less than the magnetic field strength when the second coil is energized. The conductive connecting member also has a third position when the first coil and the second coil are energized at the same time, and the conductive connecting member is electrically connected to the third static contact when in the third position.

10. The battery device according to claim 9, characterized in that The third static contact is provided with a third connection end and a fourth connection end on the side facing the magnet assembly. The third connection end and the fourth connection end are spaced apart along the first direction and are electrically connected. When the conductive connector is in the first position, it is electrically connected to the third connection end. When the conductive connector is in the third position, it is electrically connected to the fourth connection end.

11. The battery device according to claim 10, characterized in that A second output end is provided on a side of the third static contact away from the magnet assembly. The second output end is configured to be electrically connected to an external conductive member. The second output end, the third connection end and the fourth connection end are integrally formed.

12. The battery device according to claim 10, wherein: The conductive connector is arranged on one side of the third static contact along the third direction, and the conductive connector is configured to be able to abut against the third connection end along the second direction or the third direction within the range of movement along the first direction. The conductive connector is also configured to be able to abut against the fourth connection end along the second direction or the third direction within the range of movement along the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.

13. The battery device according to claim 2, characterized in that The relay also includes an elastic member, at least part of which is arranged on a side of the conductive connecting member facing the first coil. The conductive connecting member also has a fourth position when the first coil and the second coil are not energized and the elastic member is in a natural state. When the conductive connecting member is in the fourth position, it is disconnected from the second static contact and the third static contact respectively.

14. The battery device according to any one of claims 1 to 13, characterized in that The conductive connector is configured to move toward the first coil when the first coil is energized and the second coil is not energized, and is further configured to move toward the second coil when the first coil is not energized and the second coil is energized.

15. The battery device according to claim 14, characterized in that The magnetic field directions of the first coil, the second coil and the conductive connecting member are the same and are respectively arranged along the first direction.

16. The battery device according to any one of claims 1 to 13, characterized in that The magnet assembly also includes a mounting plate, the conductive connector is arranged between the mounting plate and at least a part of the static contacts along a third direction, and a guide structure extending along the first direction is provided on the side of the mounting plate facing the static contacts. The conductive connector is connected to the guide structure in a manner that can slide along the first direction and is electrically connected to the first static contact through the guide structure. The third direction intersects with the first direction.

17. The battery device according to claim 16, characterized in that The mounting plate is a metal plate, the first static contact is fixed to the mounting plate, a portion of the mounting plate is protruded along the third direction and forms the guide structure, and the conductive connector is formed with a sliding groove matching the guide structure.

18. The battery device according to any one of claims 1 to 13, characterized in that The conductive connecting member includes an armature having conductivity.

19. The battery device according to any one of claims 1 to 13, characterized in that The magnet assembly further includes a ceramic shell, and the conductive connecting member is arranged inside the ceramic shell.

20. The battery device according to claim 19, wherein: The ceramic shell includes a main body and a first sealing plate and a second sealing plate. The main body is surrounded by a mounting cavity with openings at both ends along the first direction. The first sealing plate and the second sealing plate are respectively connected to the main body and seal the openings at both ends. The conductive connector is arranged in the mounting cavity, and along the first direction, the projection of the conductive connector is respectively within the projection range of the first sealing plate and the second sealing plate.

21. The battery device according to claim 19, wherein: The magnet assembly further includes at least one magnet, which is arranged outside the ceramic shell, and the magnetic field directions of the magnet are respectively perpendicular to the first direction.

22. The battery device according to any one of claims 1 to 13, characterized in that The coil assembly includes a first coil assembly and a second coil assembly, wherein the first coil assembly includes a first shell and the first coil arranged in the first shell, and the second coil assembly includes a second shell and the second coil arranged in the second shell, the first shell and the second shell are arranged at intervals along the first direction, and the magnet assembly is arranged between the first shell and the second shell along the first direction.

23. The battery device according to any one of claims 1 to 13, characterized in that The relay further includes a plurality of connecting pieces, and the plurality of connecting pieces are respectively connected to the plurality of static contacts in a one-to-one correspondence.

24. The battery device according to claim 23, characterized in that At least one of the connecting pieces includes a first connecting portion, a transition portion, and a second connecting portion which are sequentially arranged, and the first connecting portion and the second connecting portion are respectively arranged on opposite sides of the plate surface of the transition portion.

25. The battery device according to claim 24, characterized in that A plurality of first connection holes are formed through the plate surface of the first connection portion; and / or, A plurality of first connection holes are formed through the plate surface of the second connection portion.

26. The battery device according to any one of claims 1 to 13, characterized in that The number of the conductive connecting members is at least two, and the at least two conductive connecting members are respectively configured to maintain electrical connection with the first static contact within a movement range along the first direction.

27. An electrical device, characterized in that: The electric device comprises the battery device according to any one of claims 1 to 26.

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