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 electrically connected with the battery monomer, the relay comprises a shell and a relay body, at least part of the structure of the relay body is arranged in the shell, and the relay body comprises a coil assembly, a magnet assembly and a plurality of static contacts. The coil assembly comprises a coil capable of generating a magnetic field after being electrified, the magnet assembly comprises a first conductive part and a second conductive part, the first conductive part and the second conductive part are arranged in the same shell, and the first conductive part and the second conductive part are configured to be driven under the action of the magnetic field when the coil is in an electrified state; the plurality of static contacts comprise a first static contact, a second static contact and a third static contact; the first conductive part is configured to be electrically connected with the first static contact and the second static contact, and the second conductive part is configured to be electrically connected with the second static contact and the third static contact. The battery device can reduce the space occupancy rate of the relay.

Description

Technical Field

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

[0002] Relays control the on / off switching of high-voltage circuits in electric vehicles. When the relay is closed, current is conducted through the relay's static and moving contacts. Traditional single-contact relays are prone to arcing during high-frequency disconnection, causing contact welding or shortening their service life. To address the potential arcing and contact wear or failure associated with traditional single-contact relay designs, current designs generally utilize multi-stage relay circuits. These circuits connect multiple relays in series or parallel, allowing for phased disconnection to reduce arcing and extend service life. However, using multiple relays together increases the space required for the relays. Summary of the Invention

[0003] In view of the defects of the prior art, the purpose of this application is to provide a battery device and an electrical device, which can effectively reduce the problem of increased space occupancy when multiple relays are used in combination: In a first aspect, the present application provides a battery device, comprising: at least one battery cell; a relay electrically connected to the battery cell; The relay includes a housing and a relay body. At least part of the structure of the relay body is arranged inside the housing. The relay body includes: A coil assembly, the coil assembly including a coil capable of generating a magnetic field when energized; The magnet assembly includes a first conductive member and a second conductive member, the first conductive member and the second conductive member are respectively disposed inside the same housing, and the first conductive member and the second conductive member are configured to be driven by the magnetic field when the coil is energized; A plurality of static contacts, including a first static contact, a second static contact, and a third static contact; In which, the first conductive member is configured to be electrically connected to the first static contact and the second static contact, the second conductive member is configured to be electrically connected to the second static contact and the third static contact, the coil includes a first coil and a second coil, the first conductive member is configured to be driven under the action of the magnetic field when the first coil is energized, and the second conductive member is configured to be driven under the action of the magnetic field when the second coil is energized.

[0004] According to the battery device of the present application, the first conductive member and the second conductive member are respectively arranged inside the same shell. Compared with arranging the first conductive member and the second conductive member inside different shells, the number of shells and the space occupied by the shells can be reduced, thereby reducing the space occupancy rate of the relay and further reducing the volume of the battery device. At the same time, the first conductive member is electrically connected to the first static contact and the second static contact respectively, and the second conductive member is electrically connected to the second static contact and the third static contact respectively, so that the first static contact, the second static contact and the third static contact are mutually conductive. At this time, one of the first static contact and the third static contact can be used as the circuit input end, and the other of the first static contact and the third static contact and the second static contact can be used as the circuit output end, so that the first conductive member and the second conductive member are connected in series, and the voltage of the circuit can be realized. Voltage division can be achieved, thereby realizing the effect of multiple relays being connected in series. Alternatively, the second static contact can be used as the circuit input end, and the first static contact and the third static contact can be used as the circuit output ends respectively, so that the first conductive member and the second conductive member are connected in parallel, and the current of the circuit can be divided, thereby realizing the effect of multiple relays being connected in parallel, and the generation of arcs when the relays are disconnected, the wear or failure of the static contacts can be reduced, and the working reliability of the battery device can be improved. The first coil can independently drive the first conductive member to move when it is energized, and the second coil can independently drive the second conductive member to move when it is energized, thereby realizing the separate driving of the first conductive member and the second conductive member, and then conducting the circuit through the first conductive member, the first static contact and the second static contact, or conducting the circuit through the second conductive member, the second static contact and the third static contact.

[0005] In some embodiments of the present application, The first conductive member has a first position when the first coil is not energized, and the first conductive member also has a second position away from the first coil under the action of the magnetic field when the first coil is energized, and when the first conductive member is in the second position, the first conductive member is electrically connected to the first static contact and the second static contact, respectively; and / or, The second conductive member has a first position when the second coil is not energized, and the second conductive member also has a second position away from the second coil under the action of the magnetic field when the second coil is energized, and when the second conductive member is in the second position, the second conductive member is electrically connected to the second static contact and the third static contact, respectively.

[0006] When the first coil is energized, the first conductive member can be driven to the second position under the influence of the magnetic field of the first coil, and is used to electrically connect the first and second static contacts, thereby forming a conductive circuit through the first conductive member, the first and second static contacts. When the second coil is energized, the second conductive member can be driven to the second position under the influence of the magnetic field of the second coil, and is used to electrically connect the second and third static contacts, thereby forming a conductive circuit through the second conductive member, the second and third static contacts.

[0007] In some embodiments of the present application, the coil assembly includes a first coil assembly and a second coil assembly, the first coil assembly includes a first shell and a first coil disposed in the first shell, the first shell is disposed inside the shell, the second coil assembly includes a second shell and a second coil disposed in the second shell, the second shell is disposed inside the shell.

[0008] By arranging the first housing inside the outer shell and the first coil inside the first housing, during assembly, the first coil can be first arranged inside the first housing to form a first coil assembly, and then the first coil assembly can be assembled inside the outer shell, thereby facilitating modular assembly of the relay. By arranging the second housing inside the outer shell and the second coil inside the second housing, during assembly, the second coil can first be arranged inside the second housing to form a second coil assembly, and then the second coil assembly can be assembled inside the outer shell, thereby facilitating modular assembly of the relay.

[0009] In some embodiments of the present application, Along the axial direction of the first coil, the projection of the first conductive member at least partially overlaps with the projection of the first coil; and / or, Along the axial direction of the second coil, a projection of the second conductive member at least partially overlaps with a projection of the second coil.

[0010] By at least partially overlapping the projection of the first conductive member with the projection of the first coil, the magnetic field force generated on the first conductive member when the first coil is energized can be increased, thereby driving the first conductive member to move. By at least partially overlapping the projection of the second conductive member with the projection of the second coil, the magnetic field force generated on the second conductive member when the second coil is energized can be increased, thereby driving the second conductive member to move.

[0011] In some embodiments of the present application, The relay further includes a first coil connection port penetrating the housing and a first wire passing through the first coil connection port, wherein the first coil is electrically connected to the battery cell via the first wire; and / or, The relay further includes a second coil connection port penetrating the housing and a second wire passing through the second coil connection port. The second coil is electrically connected to the battery cell via the second wire.

[0012] The first coil is electrically connected to the battery cell via a first conductor, so that power is supplied to the first coil by the battery cell, and when energized, the first coil generates a magnetic field force acting on the first conductive member. The second coil is electrically connected to the battery cell via a second conductor, so that power is supplied to the second coil by the battery cell, and when energized, the second coil generates a magnetic field force acting on the second conductive member.

[0013] In some embodiments of the present application, a first connection end and a second connection end are provided on the side of the second static contact facing the magnet assembly, the first connection end and the second connection end are electrically connected, and the first connection end is configured to be electrically connected to the first conductive member, and the second connection end is configured to be electrically connected to the second conductive member.

[0014] By providing a first connecting end and a second connecting end on the side of the second static contact facing the magnet assembly, the second static contact can be electrically connected to the first conductive member through the first connecting end, and electrically connected to the second conductive member through the second connecting end, thereby realizing electrical connection between the second static contact and the first conductive member and the second conductive member respectively.

[0015] In some embodiments of the present application, a first output end is provided on a side of the second static contact facing away from the magnet assembly, and the first output end, the first connecting end, and the second connecting end are integrally formed.

[0016] By integrally forming the first output end, the first connection end, and the second connection end, the electrical connection between the second static contact and the first conductive member and the second conductive member is facilitated, and the number of static contacts can be reduced.

[0017] In some embodiments of the present application, the first static contact, the second static contact and the third static contact are spaced apart along the first direction, the first output end protrudes from the outer surface of the second static contact, and is arranged between the first connection end and the second connection end along the first direction, and the first direction intersects with the axial direction of the coil.

[0018] By arranging the first static contact, the second static contact and the third static contact at intervals along the first direction, the space occupancy rate of the first static contact, the second static contact and the third static contact along the first direction can be increased, thereby reducing the space occupancy rate of the first static contact, the second static contact and the third static contact along the direction perpendicular to the first direction, and arranging the first output end between the first connection end and the second connection end along the first direction, further reducing the space occupancy rate of the first static contact, the second static contact and the third static contact along the direction perpendicular to the first direction.

[0019] In some embodiments of the present application, the first conductive member and the second conductive member are spaced apart along the first direction, and the first conductive member and the second conductive member extend along the first direction respectively.

[0020] By arranging the first conductive member and the second conductive member at intervals along the first direction and aligning them with the arrangement direction of the plurality of static contacts, it is convenient to electrically connect the first conductive member to the first static contact and the second static contact, and it is convenient to electrically connect the second conductive member to the second static contact and the third static contact, and by extending the first conductive member and the second conductive member respectively along the first direction, the space occupancy of the first conductive member and the second conductive member along the direction perpendicular to the first direction can be reduced.

[0021] In some embodiments of the present application, the first output end is provided on the outside of the housing, and the first connection end and the second connection end are respectively plugged into the inside of the housing.

[0022] By respectively plugging the first connection end and the second connection end into the interior of the shell, the first connection end is electrically connected to the first conductive member and the second connection end is electrically connected to the second conductive member. The first output end is arranged outside the shell, which facilitates the electrical connection of the first output end to the external conductive member.

[0023] In some embodiments of the present application, part of the first static contacts extends into the interior of the housing and is configured to be electrically connected to the first conductive member, and another part of the first static contacts is provided outside the housing and is configured to be electrically connected to the external conductive member; and / or, Part of the third static contact extends into the interior of the shell and is configured to be electrically connected to the second conductive member, and another part of the third static contact is arranged outside the shell and is configured to be electrically connected to the external conductive member.

[0024] By extending a portion of the first static contact into the interior of the housing, the first static contact is electrically connected to the first conductive member, and by arranging another portion of the first static contact outside the housing, the first static contact is electrically connected to an external conductive member. By extending a portion of the third static contact into the interior of the housing, the third static contact is electrically connected to the second conductive member, and by arranging another portion of the third static contact outside the housing, the third static contact is electrically connected to an external conductive member.

[0025] In some embodiments of the present application, a convex rib is protruding from the outer surface of the housing, and a portion of the convex rib is provided between at least two static contacts.

[0026] By arranging a rib between at least two static contacts, when the external conductive member is connected to the static contacts, short circuiting of the static contacts on both sides of the rib through the external conductive member can be reduced.

[0027] In some embodiments of the present application, the first conductive member and / or the second conductive member includes an armature having conductivity.

[0028] The armature is magnetic and can be driven under the action of the magnetic field generated by the energized coil. At the same time, the armature is also conductive, so that a circuit can be conducted through the first conductive member and / or the second conductive member.

[0029] In some embodiments of the present application, the magnet assembly further includes a ceramic shell, which is disposed inside the outer shell, and the first conductive member and the second conductive member are respectively disposed inside the ceramic shell.

[0030] By arranging the first conductive part and the second conductive part respectively inside the ceramic shell, the number of ceramic shells can be reduced, thereby reducing the space occupancy of the magnetic assembly. At the same time, the ceramic shell can effectively isolate the arc generated when the first conductive part and / or the second conductive part are disconnected from the static contact, reducing the arc from penetrating the ceramic shell and causing damage to other components in the relay. At the same time, the integration of the magnetic assembly is improved. During assembly, the first conductive part and the second conductive part can be respectively arranged inside the ceramic shell, and then the ceramic shell can be assembled to the inside of the outer shell, thereby facilitating the modular assembly of the relay.

[0031] In some embodiments of the present application, the ceramic shell includes a main body and a sealing plate, the main body is surrounded by an installation cavity with an opening at one end, the sealing plate is connected to the main body and blocks at least part of the opening, the first conductive member and the second conductive member are jointly arranged in the installation cavity, and along the axial direction of the coil, the projections of the first conductive member and the second conductive member are respectively within the projection range of the same sealing plate.

[0032] By arranging the first conductive member and the second conductive member together in the installation cavity, and placing the projections of the first conductive member and the second conductive member within the projection range of the same sealing plate, that is, the first conductive member and the second conductive plate are completely arranged inside the ceramic shell, the arc generated when the first conductive member and / or the second conductive member are disconnected from the static contact can be effectively isolated by the ceramic shell.

[0033] In some embodiments of the present application, an opening is formed on the side of the main body facing the coil assembly, and a plurality of mounting holes are penetrated on the side of the main body facing away from the coil assembly. At least a portion of the structure of any static contact passes through the mounting hole and is inserted into the mounting cavity formed by the main body.

[0034] By passing at least part of the structure of any static contact through the mounting hole and inserting it into the mounting cavity formed by the main body, the static contact can be electrically connected to the first conductive member or the second conductive member, and the connection point is located in the accommodating cavity of the ceramic shell, thereby effectively isolating the arc generated when the first conductive member and / or the second conductive member is disconnected from the static contact through the ceramic shell.

[0035] In some embodiments of the present application, the magnet assembly further includes at least one magnet, which is disposed outside the ceramic shell, and the magnetic field direction of the magnet is perpendicular to the axial direction of the coil.

[0036] By arranging the magnet outside the ceramic shell, when the first conductive part and / or the second conductive part is disconnected from the static contact to generate an arc, the magnet can generate a magnetic field in a direction perpendicular to the axial direction of the coil. The arc current interacts with the magnetic field to generate a force that drives the arc to move, causing it to stretch outward and cool down to extinguish, thereby achieving the purpose of magnetic arc extinguishing.

[0037] In some embodiments of the present application, the relay further includes a plurality of connecting pieces, and the plurality of connecting pieces are connected to the plurality of static contacts in a one-to-one correspondence.

[0038] By providing a plurality of connecting pieces, the relay can be electrically connected to the battery cells through a portion of the connecting pieces, and the relay can also be electrically connected to other electrical components through another portion of the connecting pieces, thereby completing power supply to other electrical components.

[0039] In some embodiments of the present application, at least one connecting piece includes 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 respectively arranged on opposite sides of the plate surface of the transition portion.

[0040] By arranging the first connection part and the second connection part on opposite sides of the plate surface of the transition part, the connecting piece can be electrically connected to the static contact through the first connection part and the second connection part on either side of the transition part, thereby facilitating the electrical connection between the connecting piece and the static contact.

[0041] In some embodiments of the present application, 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.

[0042] By providing a plurality of first connection holes, the first connection portion can selectively adopt any first connection hole to connect with the static contact, or the second connection portion can selectively adopt any first connection hole to connect with the static contact, thereby facilitating electrical connection between the connection piece and the static contact.

[0043] In some embodiments of the present application, the relay includes a plurality of relay bodies, and the coil assemblies and magnet assemblies of the plurality of relay bodies are respectively disposed inside a same housing.

[0044] By arranging multiple relay bodies together inside the same housing, the extra space occupied by the multiple relay bodies configured separately in the housing can be reduced, thereby reducing the space occupancy rate of the relays, and improving the integration of the relays, facilitating overall assembly.

[0045] In some embodiments of the present application, the first conductive member and the second conductive member are spaced apart along the first direction, and the first conductive member and the second conductive member extend respectively along the first direction, and a plurality of relay bodies are arranged side by side along the second direction, wherein the first direction, the second direction and the axial direction of the coil are perpendicular to each other.

[0046] By arranging the multiple relay bodies side by side along the second direction, the space occupied by the multiple relay bodies along the first direction can be reduced, and the space occupancy rate of the relays along the second direction can be improved.

[0047] In some embodiments of the present application, the battery device includes multiple relays, and the multiple relays include at least a first relay and a second relay connected in sequence to the battery cells, wherein the second static contact of the first relay is electrically connected to the battery cell, one of the first static contact and the third static contact of the first relay is electrically connected to the first static contact of the second relay, and the other of the first static contact and the third static contact of the first relay is electrically connected to the third static contact of the second relay.

[0048] By connecting the battery cell, the first relay and the second relay in sequence, the electric energy output by the battery cell is first shunted by the first relay, thereby reducing the arc generated when the first relay is disconnected. The shunted electric energy is then integrated by the second relay, thereby achieving electric energy that can meet the load power and thus meet the power demand of the load.

[0049] In a second aspect, the present application proposes an electrical device, which includes any of the above-mentioned battery devices.

[0050] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings: Figure 1 is a structural schematic diagram of a vehicle provided in one embodiment of the present application; Figure 2 is a schematic structural diagram of a battery device provided in one embodiment of the present application; Figure 3 This is a schematic structural diagram of a battery cell assembly provided in one embodiment of the present application; Figure 4 This is a schematic diagram of the exploded structure of a battery cell provided in one embodiment of the present application; Figure 5 1 is a schematic structural diagram of a relay provided in one embodiment of the present application; Figure 6 yes Figure 5 Schematic diagram of the structure of the relay after removing the connecting piece; Figure 7 yes Figure 6 Schematic diagram of the split structure of the relay in; Figure 8 yes Figure 6 A schematic diagram of the structure of the relay body after the outer shell of the relay is removed; Figure 9 This is a schematic structural diagram of a first connecting piece in another embodiment of the present application; Figure 10 Schematic diagram of electrical connections between a battery cell and multiple relays in a battery device provided in one embodiment of the present application.

[0052] The accompanying drawings in the specific implementation manner are as follows: 1. Vehicle; 10. Battery device; 11. Controller; 12. Motor; 20. Battery cell assembly; 21. Battery cell; 211. End cap; 212. Housing; 213. Electrode assembly; 214. Electrode terminal; 30. Box; 301. First box; 302. Second box; 40. Relay; 401. First relay; 402. Second relay; 403. Relay body; 41. Housing; 411. Housing body; 4111. Raised rib; 4112. First coil connection port; 4113. Second coil connection 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. First conductive member; 432. Second conductive member; 433. Ceramic housing; 4331. Main body; 4332. Sealing plate; 4333. Mounting hole; 434. Magnet; 435. Support plate; 436. First spring; 437. Second spring; 441, first static contact; 442, second static contact; 4421, first connection terminal; 4422, second connection terminal; 4423, first output terminal; 443, third static contact; 451, first connecting piece; 4511, first connecting portion; 4512, transition portion; 4513, second connecting portion; 4514, first connecting hole; 4515, positioning protrusion; 452, second connecting piece; 453, third connecting piece; 46. ​​Electric control panel; X, coil axis; Y, first direction; Z, second direction. DETAILED DESCRIPTION

[0053] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0055] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0056] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0058] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0059] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0060] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0061] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0062] Relays control the on / off switching of high-voltage circuits in electric vehicles. When the relay is closed, current is conducted through the relay's static and moving contacts. Traditional single-contact relays are prone to arcing during high-frequency disconnection, causing contact welding or shortening their service life. To address the potential arcing and contact wear or failure associated with traditional single-contact relay designs, current designs generally utilize multi-stage relay circuits. These circuits connect multiple relays in series or parallel, allowing for phased disconnection to reduce arcing and extend service life. However, using multiple relays together increases the space required for the relays.

[0063] To alleviate the problem of increased space usage when multiple relays are used in combination, this application proposes a battery device and an electrical device including the battery device. The battery device and electrical device of this application can reduce the number of housings and the space occupied by the housings, thereby reducing the space usage of the relays and, in turn, the size of the battery device. Furthermore, they can reduce arcing when the relays are disconnected, reduce wear or failure of the static contacts, and improve the operating reliability of the battery device.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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 .

[0078] 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, to meet different power requirements, the battery device 10 may include multiple battery cells 21. A battery cell 21 is the smallest unit that makes up the battery device 10. Multiple battery cells 21 can be connected in series and / or in parallel via electrode terminals for various applications. Multiple battery cells 21 can be connected in series, in parallel, or in a hybrid connection. Hybrid connection refers to a combination of series and parallel connections.

[0079] Combine Figure 2 and Figure 3 As shown, the battery device 10 may include multiple battery cell assemblies 20 and a housing 30, wherein the multiple battery cell assemblies 20 are housed within the housing 30. The housing 30 is used to house the battery cells 21 or the battery cell assemblies 20 to reduce the impact of liquids or other foreign matter on the charging or discharging of the battery cells 21. The housing 30 may be a simple three-dimensional structure such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as rectangular parallelepipeds, cylinders, or spheres. The housing 30 may be made of an alloy material such as an aluminum alloy or an iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0080] In some embodiments, the housing 30 may include a first housing 301 and a second housing 302. The first housing 301 and the second housing 302 cover each other, and the first housing 301 and the second housing 302 jointly define a space for accommodating the battery cells 21. The second housing 302 may be a hollow structure with one end open, and the first housing 301 may be a plate-like structure. The first housing 301 covers the open side of the second housing 302, so that the first housing 301 and the second housing 302 jointly define a space for accommodating the battery cells 21. The first housing 301 and the second housing 302 may also be hollow structures with one end open, with the open side of the first housing 301 covering the open side of the second housing 302.

[0081] The battery cell assembly 20 may include multiple battery cells 21. Multiple battery cells 21 may be connected in series, in parallel, or in a mixed manner to form the battery cell assembly 20, and multiple battery cell assemblies 20 may then be connected in series, in parallel, or in a mixed manner to form the battery device 10. The battery cell 21 may be cylindrical, flat, rectangular, or in other shapes, and the embodiments of the present application are not limited to this. Battery cells 21 are generally divided into three types according to the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of the present application are not limited to this. However, for the sake of simplicity, the following embodiments are all described using a prismatic lithium-ion battery cell 21 as an example.

[0082] 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 .

[0083] 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.

[0084] 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.

[0085] The electrode assembly 213 is a component in the battery cell 21 where electrochemical reactions occur. One or more electrode assemblies 213 may be contained in the housing 212. The electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 213, and the parts of the positive and negative electrode sheets without active materials each constitute a tab (not shown in the figure). The positive and negative electrode tabs may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs are connected to the electrode terminals 214 to form a current loop.

[0086] Combine Figure 2 、 Figures 5 to 8 As shown, in the first aspect, the present application proposes a battery device 10. In some embodiments of the present application, the battery device 10 includes at least one battery cell 21 and a relay 40, and the relay 40 is electrically connected to the battery cell 21. The relay 40 includes a housing 41 and a relay body 403. At least part of the structure of the relay body 403 is arranged inside the housing 41. The relay body 403 includes a coil assembly 42, a magnet assembly 43 and a plurality of static contacts. The coil assembly 42 includes a coil that can generate a magnetic field when energized. The magnet assembly 43 includes a first conductive member 431 and a second conductive member 432. The first conductive member 431 and the second conductive member 432 are respectively arranged inside the same housing 41, and the first conductive member 431 and the second conductive member 432 are configured to be driven under the action of the magnetic field when the coil is energized. The plurality of static contacts The points include a first static contact 441, a second static contact 442 and a third static contact 443; wherein, the first conductive member 431 is configured to be electrically connected to the first static contact 441 and the second static contact 442, and the second conductive member 432 is configured to be electrically connected to the second static contact 442 and the third static contact 443; the coil includes a first coil 4211 and a second coil 4221, the first conductive member 431 is configured to be driven under the action of the magnetic field when the first coil 4211 is powered on, and the second conductive member 432 is configured to be driven under the action of the magnetic field when the second coil 4221 is powered on.

[0087] Specifically, the at least one battery cell 21 may be provided in multiple numbers, forming a battery cell assembly 20. The battery cell assembly 20 is electrically connected to the relay 40 via at least one battery cell 21, thereby increasing the output voltage or output current of the battery device 10. Alternatively, the relay 40 may be located within the housing 30 and directly connected to the battery cell 21 via a conductive member, such as a conductive tab. Alternatively, the relay 40 may be located within the housing 30 and electrically connected to the battery cell 21 via a fuse.

[0088] The coil assembly 42 includes at least one coil, which has an axial direction, hereinafter referred to as the coil axial direction X. When energized, the coil generates a magnetic field along its own axial direction, thereby driving the first conductive member 431 and the second conductive member 432 to move along the coil axial direction X. In this application, the first conductive member 431 and the second conductive member 432 can move in a direction away from the coil under the action of the coil's magnetic field.

[0089] Part of the structure in the magnet assembly 43 is magnetic, and the magnetic direction is opposite to the direction of the magnetic field generated after the coil is energized. The magnetic component is driven by the magnetic field of the coil, thereby moving in the direction away from the coil. Optionally, the first conductive member 431 and the second conductive member 432 are respectively magnetic, so that they are directly driven under the action of the magnetic field force of the coil. Alternatively, at least one of the first conductive member 431 and the second conductive member 432 is non-magnetic, and the non-magnetic conductive member is connected to the magnetic member in the magnet assembly 43, and the magnetic member is directly driven under the action of the magnetic field force of the coil, and drives the conductive member to move together. For the convenience of description, this application only takes the first conductive member 431 and the second conductive member 432 as an example of being magnetic and being able to be directly driven under the action of the magnetic field force of the coil.

[0090] The plurality of static contacts include a first static contact 441, a second static contact 442, and a third static contact 443. The first conductive member 431 can abut and electrically connect to the first static contact 441 and the second static contact 442, respectively. At this point, one of the first static contact 441 and the second static contact 442 can be electrically connected to an external power source, such as a battery cell 21, and serve as a circuit input, while the other can be electrically connected to an external electrical device and serve as a circuit output, thereby completing the circuit conduction through the first static contact 441, the first conductive member 431, and the second static contact 442. The second conductive member 432 can abut and electrically connect to the second static contact 442 and the third static contact 443, respectively. At this time, one of the second static contact 442 and the third static contact 443 can be electrically connected to an external power source such as a battery cell 21 and serve as a circuit input end, and the other can be electrically connected to an external electrical device and serve as a circuit output end, thereby completing the circuit conduction through the second static contact 442, the second conductive member 432 and the third static contact 443.

[0091] The first conductive member 431 is disposed correspondingly to the first coil 4211 along the coil axis X. The first conductive member 431 is configured to move away from the first coil 4211 under the influence of the magnetic field when the first coil 4211 is energized. The second conductive member 432 is disposed correspondingly to the second coil 4221 along the coil axis X. The second conductive member 432 is configured to move away from the second coil 4221 under the influence of the magnetic field when the second coil 4221 is energized. Optionally, the first conductive member 431 and the second conductive member 432 are spaced apart along the first direction Y. Accordingly, the first coil assembly 421 and the second coil assembly 422 are also spaced apart along the first direction Y. The first direction Y intersects the coil axis X. Optionally, the first direction Y is perpendicular to the coil axis X. The first direction Y may be the length direction of the housing 41. The coil axis X may be the height direction of the housing 41.

[0092] According to the battery device 10 of the present application, the first conductive member 431 and the second conductive member 432 are respectively arranged inside the same shell 41. Compared with arranging the first conductive member 431 and the second conductive member 432 inside different shells 41, the number of shells 41 and the space occupied by the shells 41 can be reduced, thereby reducing the space occupancy rate of the relay 40, and further reducing the volume of the battery device 10. At the same time, the first conductive member 431 is electrically connected to the first static contact 441 and the second static contact 442, respectively, and the second conductive member 432 is electrically connected to the first static contact 441 and the second static contact 442, respectively. The second static contact 442 and the third static contact 443 are electrically connected, so that the first static contact 441, the second static contact 442 and the third static contact 443 are conductive to each other. At this time, one of the first static contact 441 and the third static contact 443 can be used as the circuit input end, and the other of the first static contact 441 and the third static contact 443 and the second static contact 442 can be used as the circuit output end, so that the first conductive member 431 and the second conductive member 432 are connected in series, and the voltage of the circuit can be divided, thereby realizing the effect of multiple relays being connected in series. Alternatively, the second static contact 442 can be used as the circuit input end, and the first static contact 441 and the third static contact 443 can be used as the circuit output end respectively, so that the first conductive member 431 and the second conductive member 432 are connected in parallel, and the current of the circuit can be shunted, thereby realizing the effect of multiple relays being connected in parallel, and reducing the generation of arcs when the relay 40 is disconnected, reducing the wear or failure of the static contacts, and improving the working reliability of the battery device 10. The first coil 4211 can independently drive the first conductive member 431 to move when it is energized, and the second coil 4221 can independently drive the second conductive member 432 to move when it is energized, thereby realizing the separate driving of the first conductive member 431 and the second conductive member 432, and then conducting the circuit through the first conductive member 431, the first static contact 441 and the second static contact 442, or conducting the circuit through the second conductive member 432, the second static contact 442 and the third static contact 443.

[0093] Combine Figures 5 to 8 As shown, in some embodiments of the present application, The first conductive member 431 has a first position when the first coil 4211 is not energized, and the first conductive member 431 also has a second position away from the first coil 4211 under the action of the magnetic field when the first coil 4211 is energized, and when the first conductive member 431 is in the second position, the first conductive member 431 is electrically connected to the first static contact 441 and the second static contact 442 respectively; and / or, The second conductive member 432 has a first position when the second coil 4221 is not energized, and the second conductive member 432 also has a second position away from the second coil 4221 under the action of the magnetic field when the second coil 4221 is energized, and when the second conductive member 432 is in the second position, the second conductive member 432 is electrically connected to the second static contact 442 and the third static contact 443, respectively.

[0094] Specifically, when the first coil 4211 is de-energized, that is, when the first conductive member 431 is not subjected to the magnetic field of the first coil 4211, the first conductive member 431 is in the first position. In the first position, the first conductive member 431 is disconnected from the first static contact 441 and the second static contact 442, respectively. Therefore, the relay 40 cannot conduct a circuit through the first static contact 441, the first conductive member 431, and the second static contact 442. When the first coil 4211 is energized, that is, when the first conductive member 431 is subjected to the magnetic field of the first coil 4211, the first conductive member 431 moves to the second position away from the first coil 4211 under the influence of the magnetic field. When the first conductive member 431 is in the second position, the first conductive member 431 is electrically connected to the first static contact 441 and the second static contact 442, respectively. The relay 40 can conduct a circuit through the first static contact 441, the first conductive member 431, and the second static contact 442.

[0095] When the second coil 4221 is de-energized, that is, when the second conductive member 432 is not subjected to the magnetic field of the second coil 4221, the second conductive member 432 is in the first position. In the first position, the second conductive member 432 is disconnected from the second static contact 442 and the third static contact 443, respectively. Therefore, the relay 40 cannot conduct a circuit through the second static contact 442, the second conductive member 432, and the third static contact 443. When the second coil 4221 is energized, that is, when the second conductive member 432 is subjected to the magnetic field of the second coil 4221, the second conductive member 432 moves to the second position away from the second coil 4221 under the influence of the magnetic field. When the second conductive member 432 is in the second position, it is electrically connected to the second static contact 442 and the third static contact 443, respectively. The relay 40 can conduct a circuit through the second static contact 442, the second conductive member 432, and the third static contact 443.

[0096] When the first coil 4211 is energized, the first conductive member 431 can be driven to the second position under the influence of the magnetic field of the first coil 4211, and is used to electrically connect the first static contact 441 and the second static contact 442, thereby forming a conductive circuit through the first conductive member 431, the first static contact 441, and the second static contact 442. When the second coil 4221 is energized, the second conductive member 432 can be driven to the second position under the influence of the magnetic field of the second coil 4221, and is used to electrically connect the second static contact 442 and the third static contact 443, thereby forming a conductive circuit through the second conductive member 432, the second static contact 442, and the third static contact 443.

[0097] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the coil assembly 42 includes a first coil assembly 421 and a second coil assembly 422, the first coil assembly 421 includes a first shell 4212 and a first coil 4211 disposed in the first shell 4212, the first shell 4212 is disposed inside the outer shell 41, the second coil assembly 422 includes a second shell 4222 and a second coil 4221 disposed in the second shell 4222, the second shell 4222 is disposed inside the outer shell 41.

[0098] Specifically, the first housing 4212 has an interior mounting cavity, and the first coil 4211 is fixed within the mounting cavity of the first housing 4212. Optionally, the first coil assembly 421 also includes a first iron core (not shown), which is fixed within the interior of the first housing 4212, and the first coil 4211 is wound around the outer circumference of the first iron core. Optionally, the first housing 4212 may be an insulating member to reduce the possibility of short circuits between the first housing 4212 and the first coil 4211 when energized.

[0099] The second housing 4222 has an interior mounting cavity, within which the second coil 4221 is secured. Optionally, the second coil assembly 422 also includes a second core (not shown) secured within the second housing 4222, with the second coil 4221 wound around its outer circumference. Optionally, the second housing 4222 may be an insulator to reduce the risk of short circuits between the second housing 4222 and the second coil 4221 when energized.

[0100] By disposing the first housing 4212 inside the housing 41 and the first coil 4211 inside the first housing 4212, during assembly, the first coil 4211 can be first disposed inside the first housing 4212 to form the first coil assembly 421, and then the first coil assembly 421 can be assembled inside the housing 41, thereby facilitating modular assembly of the relay 40. By disposing the second housing 4222 inside the housing 41 and the second coil 4221 inside the second housing 4222, during assembly, the second coil 4221 can first be disposed inside the second housing 4222 to form the second coil assembly 422, and then the second coil assembly 422 can be assembled inside the housing 41, thereby facilitating modular assembly of the relay 40.

[0101] Combine Figures 5 to 8 As shown, in some embodiments of the present application, Along the axial direction of the first coil 4211 , the projection of the first conductive member 431 at least partially overlaps with the projection of the first coil 4211 ; and / or, Along the axial direction of the second coil 4221 , the projection of the second conductive member 432 at least partially overlaps with the projection of the second coil 4221 .

[0102] Specifically, along the coil axis X, the first conductive member 431 and the first coil 4211 are disposed opposite each other, and their projections at least partially overlap. Along the coil axis X, the second conductive member 432 and the second coil 4221 are disposed opposite each other, and their projections at least partially overlap.

[0103] By at least partially overlapping the projection of the first conductive member 431 with the projection of the first coil 4211, the magnetic field force generated by the first coil 4211 on the first conductive member 431 when the first coil 4211 is energized can be increased, thereby driving the first conductive member 431 to move. By at least partially overlapping the projection of the second conductive member 432 with the projection of the second coil 4221, the magnetic field force generated by the second coil 4221 on the second conductive member 432 when the second coil 4221 is energized can be increased, thereby driving the second conductive member 432 to move.

[0104] Combine Figures 5 to 8 As shown, in some embodiments of the present application, The relay 40 further includes a first coil connection port 4112 penetrating the housing 41 and a first wire passing through the first coil connection port 4112 , and the first coil 4211 is electrically connected to the battery cell 21 via the first wire; and / or, The relay 40 further includes a second coil connection port 4113 penetrating the housing and a second wire passing through the second coil connection port 4113 . The second coil 4221 is electrically connected to the battery cell 21 via the second wire.

[0105] Specifically, the housing 41 is provided with a first coil connection port 4112. A first wire can be passed through the first coil connection port 4112, and the two ends of the first wire are electrically connected to the battery cell 21 and the first coil 4211, respectively. This is used to supply power to the first coil 4211, and when the first coil 4211 is energized, it generates a magnetic field force acting on the first conductive member 431, thereby driving the first conductive member 431 to move. The housing 41 is also provided with a second coil connection port 4113. A second wire can be passed through the second coil connection port 4113, and the two ends of the second wire are electrically connected to the battery cell 21 and the second coil 4221, respectively. This is used to supply power to the second coil 4221, and when the second coil 4221 is energized, it generates a magnetic field force acting on the second conductive member 432, thereby driving the second conductive member 432 to move.

[0106] Optionally, the relay body 403 further includes an electronic control board 46, through which the first and second wires are electrically connected to the first and second coils 4211, 4221, respectively. Optionally, the electronic control board 46 can be located on the same side of the first and second coil assemblies 421, 422 along the second direction Z, and electrically connected to the first and second coils 4211, 4221, respectively, to control the current input to the first and second coils 4211, 4221. The magnetic fields generated by the first and second coils 4211, 4221 drive the movement of the first and second conductive members 431, 432, respectively, thereby controlling whether the relay 40 connects or disconnects the circuit.

[0107] The first coil 4211 is electrically connected to the battery cell 21 via a first conductive wire. Power is supplied to the first coil 4211 via the battery cell 21, and when energized, the first coil 4211 generates a magnetic field force acting on the first conductive member 431. The second coil 4221 is electrically connected to the battery cell 21 via a second conductive wire. Power is supplied to the second coil 4221 via the battery cell 21, and when energized, the second coil 4221 generates a magnetic field force acting on the second conductive member 432.

[0108] Combine Figures 5 to 8As shown, in some embodiments of the present application, the second static contact 442 is provided with a first connection end 4421 and a second connection end 4422 on the side facing the magnet assembly 43, the first connection end 4421 and the second connection end 4422 are electrically connected, and the first connection end 4421 is configured to be electrically connected to the first conductive member 431, and the second connection end 4422 is configured to be electrically connected to the second conductive member 432.

[0109] Specifically, along the coil axial direction X, the side of the second static contact 442 facing the magnet assembly 43 can be electrically connected to the first conductive member 431 and the second conductive member 432, respectively. The portion for connecting with the first conductive member 431 forms a first connecting end 4421, and the portion for connecting with the second conductive member 432 forms a second connecting end 4422. Optionally, to facilitate connection with the first conductive member 431 and the second conductive member 432, the first connecting end 4421 and the second connecting end 4422 are respectively provided to protrude from one side surface of the second static contact 442.

[0110] By providing a first connection end 4421 and a second connection end 4422 on the side of the second static contact 442 facing the magnet assembly 43, the second static contact 442 can be electrically connected to the first conductive member 431 through the first connection end 4421, and electrically connected to the second conductive member 432 through the second connection end 4422, thereby realizing electrical connection between the second static contact 442 and the first conductive member 431 and the second conductive member 432 respectively.

[0111] Combine Figures 5 to 8 As shown, in some embodiments of the present application, a first output end 4423 is provided on the side of the second static contact 442 facing away from the magnet assembly 43 , and the first output end 4423 , the first connection end 4421 and the second connection end 4422 are integrally formed.

[0112] Specifically, along the coil axis X, the side of the second static contact 442 facing away from the magnet assembly 43 is used to connect to an external conductive member, forming a first output end 4423. Optionally, to facilitate connection of the second static contact 442 with the external conductive member, the first output end 4423 is provided protruding from the other surface of the second static contact 442. In some other embodiments of the present application, two spaced-apart static contacts may be connected to a conductive member, with at least one of the static contacts being detachably connected to the conductive member. Thus, when the two static contacts are respectively connected to the conductive member, a second static contact 442 is formed, and the second static contact 442 has two connection ends.

[0113] By integrally forming the first output terminal 4423 , the first connection terminal 4421 and the second connection terminal 4422 , the electrical connection between the second static contact 442 and the first conductive member 431 and the second conductive member 432 is facilitated, and the number of static contacts can be reduced.

[0114] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the first static contact 441, the second static contact 442 and the third static contact 443 are arranged at intervals along the first direction Y, the first output end 4423 protrudes from the outer surface of the second static contact 442, and is arranged between the first connection end 4421 and the second connection end 4422 along the first direction Y, and the first direction Y intersects with the coil axis X.

[0115] Specifically, the first stationary contact 441, the second stationary contact 442, and the third stationary contact 443 are arranged sequentially and spaced apart along the first direction Y, thereby reducing the risk of short circuits between the first, second, and third stationary contacts 441, 442, 443. Optionally, the first stationary contact 441, the second, and third stationary contacts 442, 443 may be arranged along the same straight line. The first output terminal 4423 is arranged between the first connection terminal 4421 and the second connection terminal 4422 along the first direction Y. That is, the first stationary contact 441, the first connection terminal 4421, the first output terminal 4423, the second connection terminal 4422, and the third stationary contact 443 are arranged sequentially and spaced apart along the first direction Y. The first direction Y intersects with the coil axis X, and optionally, is perpendicular to the coil axis X. The first direction Y may be the length of the housing 41. The coil axis X may be the height of the housing 41.

[0116] By arranging the first static contact 441, the second static contact 442 and the third static contact 443 at intervals along the first direction Y, the space occupancy rate of the first static contact 441, the second static contact 442 and the third static contact 443 along the first direction Y can be improved, thereby reducing the space occupancy rate of the first static contact 441, the second static contact 442 and the third static contact 443 along the direction perpendicular to the first direction Y, and arranging the first output end 4423 between the first connection end 4421 and the second connection end 4422 along the first direction Y, further reducing the space occupancy rate of the first static contact 441, the second static contact 442 and the third static contact 443 along the direction perpendicular to the first direction Y.

[0117] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the first conductive member 431 and the second conductive member 432 are spaced apart along the first direction Y, and the first conductive member 431 and the second conductive member 432 extend along the first direction Y respectively.

[0118] Specifically, the first conductive member 431 and the second conductive member 432 are spaced apart along the first direction Y, thereby reducing contact and short circuit between the first conductive member 431 and the second conductive member 432. The first conductive member 431 and the second conductive member 432 can be strip-shaped members and extend along the first direction Y respectively.

[0119] By arranging the first conductive member 431 and the second conductive member 432 at intervals along the first direction Y and in accordance with the arrangement direction of multiple static contacts, it is convenient to electrically connect the first conductive member 431 with the first static contact 441 and the second static contact 442, and to electrically connect the second conductive member 432 with the second static contact 442 and the third static contact 443, and by extending the first conductive member 431 and the second conductive member 432 respectively along the first direction Y, the space occupancy rate of the first conductive member 431 and the second conductive member 432 along the direction perpendicular to the first direction Y can be reduced.

[0120] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the first output end 4423 is provided on the outside of the housing 41 , and the first connection end 4421 and the second connection end 4422 are respectively plugged into the inside of the housing 41 .

[0121] Specifically, a housing 41 defines an interior housing cavity, within which most of the relay body 403's components are housed. For example, the coil assembly 42 and the magnet assembly 43 are each housed within the housing 41, thereby protecting the coil assembly 42 and the magnet assembly 43 within the housing 41. A first connection terminal 4421 is positioned above the first conductive member 431 along the coil axial direction X, and a second connection terminal 4422 is positioned above the second conductive member 432 along the coil axial direction X. The first connection terminal 4421 extends into the housing 41 along the coil axial direction X, toward one end of the first conductive member 431, and is capable of contacting and electrically connecting with the first conductive member 431 in its second position. The second connection terminal 4422 extends into the housing 41 along the coil axial direction X, toward one end of the second conductive member 432, and is capable of contacting and electrically connecting with the second conductive member 432 in its second position. A first output terminal 4423 is positioned outside the housing 41 and is used for electrical connection to external conductive members.

[0122] Optionally, the housing 41 includes a housing body 411 and a base plate 412. The housing body 411 encloses a receiving cavity with an open end, and the base plate 412 is connected to the housing body 411 and is used to seal the opening. Optionally, the housing 41 can be made of an insulating material, thereby providing good insulation properties and electrically isolating the internal components of the relay 40 from external components.

[0123] By respectively plugging the first connection end 4421 and the second connection end 4422 into the interior of the shell 41, the first connection end 4421 is electrically connected to the first conductive member 431 and the second connection end 4422 is electrically connected to the second conductive member 432. The first output end 4423 is arranged outside the shell 41 to facilitate electrical connection between the first output end 4423 and the external conductive member.

[0124] Combine Figures 5 to 8As shown, in some embodiments of the present application, part of the first static contact 441 extends into the interior of the housing 41 and is configured to be electrically connected to the first conductive member 431, and another part of the first static contact 441 is provided outside the housing 41 and is configured to be electrically connected to an external conductive member; and / or, Part of the third static contact 443 extends into the interior of the housing 41 and is configured to be electrically connected to the second conductive member 432 , and another part of the third static contact 443 is located outside the housing 41 and is configured to be electrically connected to an external conductive member.

[0125] Specifically, the first static contact 441 is arranged above the first conductive part 431 along the coil axial direction X. One end of the first static contact 441 toward the first conductive part 431 along the coil axial direction X extends into the interior of the housing 41, and can contact and electrically connect with the first conductive part 431 in the second position. The end of the first static contact 441 facing away from the first conductive part 431 is arranged outside the housing 41, and is used for electrical connection with an external conductive part. The third static contact 443 is arranged above the second conductive part 432 along the coil axial direction X. One end of the third static contact 443 toward the second conductive part 432 along the coil axial direction X extends into the interior of the housing 41, and can contact and electrically connect with the second conductive part 432 in the second position. The end of the third static contact 443 facing away from the second conductive part 432 is arranged outside the housing 41, and is used for electrical connection with an external conductive part.

[0126] By extending a portion of the first static contact 441 into the interior of the housing 41, the first static contact 441 is electrically connected to the first conductive member 431. By positioning another portion of the first static contact 441 outside the housing 41, the first static contact 441 is electrically connected to an external conductive member. By extending a portion of the third static contact 443 into the interior of the housing 41, the third static contact 443 is electrically connected to the second conductive member 432. By positioning another portion of the third static contact 443 outside the housing 41, the third static contact 443 is electrically connected to an external conductive member.

[0127] Combine Figures 5 to 8 As shown, in some embodiments of the present application, a convex rib 4111 is protruding from the outer surface of the housing 41, and a portion of the convex rib 4111 is provided between at least two static contacts.

[0128] Specifically, the rib 4111 protrudes from the outer surface of the housing 41, and a portion of the rib 4111 is provided between at least two adjacent static contacts. Optionally, there are two ribs 4111, spaced apart along the first direction Y, with each rib 4111 extending along the second direction Z. One of the two ribs 4111 is provided between the first static contact 441 and the second static contact 442, thereby reducing the risk of short circuits between the first and second static contacts 441, 442 through external conductive components. The other of the two ribs 4111 is provided between the second and third static contacts 442, 443, thereby reducing the risk of short circuits between the second and third static contacts 442, 443 through external conductive components. The first direction Y, the second direction Z, and the coil axis X are perpendicular to each other, and the second direction Z can be the width of the housing 41.

[0129] By providing the rib 4111 between at least two static contacts, when an external conductive member is connected to the static contacts, short circuiting of the static contacts on both sides of the rib 4111 through the external conductive member can be reduced.

[0130] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the first conductive member 431 and / or the second conductive member 432 includes an armature having conductivity.

[0131] Specifically, the armature has magnetism and conductivity. Optionally, the first conductive member 431 and the second conductive member 432 each include an armature with conductivity. When the coil is in the energized state, the magnetic field generated by the coil can directly act on the first conductive member 431 and the second conductive member 432, and drive the first conductive member 431 and the second conductive member 432 to move together. In some other embodiments of the present application, two support members can also be provided, and the two support members are connected to the first conductive member 431 and the second conductive member 432 in a one-to-one correspondence. Among them, the first conductive member 431 and the second conductive member 432 are respectively metal conductive members, the two support members are armatures, and the first conductive member 431 and the second conductive member 432 are respectively provided with insulating members between the support members to reduce the occurrence of short circuits. The support member can move in a direction away from the coil under the action of the magnetic field when the coil is energized, and causes the first conductive member 431 and the second conductive member 432 to be in the second position respectively. In some other embodiments of the present application, one of the first conductive part 431 and the second conductive part 432 can be set as a conductive armature, and the other can be set as a metal conductive part, and the metal conductive part can be connected to a magnetic support part, and the support part drives the metal conductive part to move under the action of the coil magnetic field.

[0132] The armature is magnetic and can be driven by the magnetic field generated by the energized coil. The armature is also conductive, so that a circuit can be conducted through the first conductive member 431 and / or the second conductive member 432 .

[0133] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the magnet assembly 43 further includes a ceramic shell 433 , which is disposed inside the housing 41 , and the first conductive member 431 and the second conductive member 432 are respectively disposed inside the ceramic shell 433 .

[0134] Specifically, the ceramic housing 433 has insulating properties, which can effectively reduce the arc generated when the static contact is disconnected from penetrating the housing.

[0135] Optionally, a mounting cavity for mounting the first conductive member 431 and the second conductive member 432 is formed inside the ceramic housing 433 , and the first conductive member 431 and the second conductive member 432 can move along the coil axial direction X in the mounting cavity.

[0136] By respectively arranging the first conductive part 431 and the second conductive part 432 inside the ceramic shell 433, the number of ceramic shells 433 can be reduced, thereby reducing the space occupancy rate of the magnet assembly 43. At the same time, the ceramic shell 433 can effectively isolate the arc generated when the first conductive part 431 and / or the second conductive part 432 are disconnected from the static contact, reducing the arc breakdown of the ceramic shell 433 and damage to other components in the relay 40. At the same time, the integration of the magnet assembly 43 is improved. During assembly, the first conductive part 431 and the second conductive part 432 can be respectively arranged inside the ceramic shell 433, and then the ceramic shell 433 can be assembled to the inside of the shell 41, thereby facilitating the modular assembly of the relay 40.

[0137] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the ceramic shell 433 includes a main body 4331 and a sealing plate 4332. The main body 4331 is surrounded by a mounting cavity with an opening at one end. The sealing plate 4332 is connected to the main body 4331 and blocks at least part of the opening. The first conductive member 431 and the second conductive member 432 are jointly arranged in the mounting cavity, and along the coil axis X, the projections of the first conductive member 431 and the second conductive member 432 are respectively within the projection range of the same sealing plate 4332.

[0138] Specifically, the ceramic housing 433 includes a main body 4331 and a sealing plate 4332. The main body 4331 is provided with a mounting cavity. The sealing plate 4332 is connected to the main body 4331 and is used to seal the opening of the main body 4331. Optionally, the main body 4331 and the sealing plate 4332 are both ceramic plates.

[0139] Optionally, the magnet assembly 43 further includes a first spring 436, which is connected to the side of the first conductive member 431 facing away from the static contact and is used to support the movement of the first conductive member 431. Optionally, a through hole is provided through the sealing plate 4332, and the end of the first spring 436 facing away from the first conductive member 431 can pass through the through hole in the sealing plate 4332 and be inserted into the interior of the first coil assembly 421, thereby abutting or connecting with the internal structure of the first coil assembly 421, thereby improving the smoothness of the movement of the first conductive member 431 along the coil axis X.

[0140] Optionally, the magnet assembly 43 further includes a second spring 437, which is connected to the side of the second conductive member 432 facing away from the static contact and is used to support the movement of the second conductive member 432. Optionally, a through hole is provided through the sealing plate 4332, and the end of the second spring 437 facing away from the second conductive member 432 can pass through the through hole in the sealing plate 4332 and be inserted into the interior of the second coil assembly 422, thereby abutting or connecting with the internal structure of the second coil assembly 422, thereby improving the smoothness of the movement of the second conductive member 432 along the coil axis X.

[0141] By arranging the first conductive member 431 and the second conductive member 432 together in the installation cavity, and placing the projections of the first conductive member 431 and the second conductive member 432 within the projection range of the same sealing plate 4332, that is, the first conductive member 431 and the second conductive member 432 are completely arranged inside the ceramic shell 433, the arc generated when the first conductive member 431 and / or the second conductive member 432 is disconnected from the static contact can be effectively isolated by the ceramic shell 433.

[0142] Combine Figures 5 to 8 As shown, in some embodiments of the present application, an opening is formed on the side of the main body 4331 facing the coil assembly 42, and a plurality of mounting holes 4333 are penetrated on the side of the main body 4331 facing away from the coil assembly 42, and at least part of the structure of any static contact passes through the mounting hole 4333 and is inserted into the mounting cavity formed by the main body 4331.

[0143] Specifically, the end of the main body 4331 facing away from the opening is a plate-like structure, and the plate-like structure is provided with a plurality of mounting holes 4333. The plurality of mounting holes 4333 are used to allow the plurality of static contacts to extend into the ceramic housing 433. Optionally, the plurality of mounting holes 4333 can be four, and the four mounting holes 4333 are arranged sequentially and spaced apart along the first direction Y, and the four mounting holes 4333 are used to respectively allow the first static contact 441, the first connecting end 4421, the second connecting end 4422, and the third static contact 443 to pass through.

[0144] By passing at least part of the structure of any static contact through the mounting hole 4333 and inserting it into the mounting cavity formed by the main body 4331, the static contact can be electrically connected to the first conductive member 431 or the second conductive member 432, and the connection point is located in the accommodating cavity of the ceramic shell 433, thereby effectively isolating the arc generated when the first conductive member 431 and / or the second conductive member 432 is disconnected from the static contact through the ceramic shell 433.

[0145] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the magnet assembly 43 further includes at least one magnet 434 , which is disposed outside the ceramic shell 433 , and the magnetic field direction of the magnet 434 is perpendicular to the coil axis X.

[0146] Specifically, the magnet 434 is disposed on the outside of the ceramic housing 433 in a direction perpendicular to the coil axial direction X, and the magnetic field direction of the magnet 434 is perpendicular to the coil axial direction X, that is, perpendicular to the magnetic field directions of the first coil 4211 and the second coil 4221. Optionally, the magnet 434 can be directly attached to the outside of the ceramic housing 433, such as by bonding, or the magnet 434 can be disposed on a support plate 435, and the support plate 435 is disposed on the outside of the ceramic housing 433, such as by connecting the support plate 435 to the inner wall surface of the shell body 411. Optionally, there can be multiple support plates 435, which are spaced apart and disposed on the outside of the ceramic housing 433, and each support plate 435 is provided with multiple magnets 434.

[0147] By arranging the magnet 434 outside the ceramic shell 433, when the first conductive part 431 and / or the second conductive part 432 are disconnected from the static contact to generate an arc, the magnet 434 can generate a magnetic field in a direction perpendicular to the coil axis X. The arc current interacts with the magnetic field to generate a force that drives the arc to move, causing it to stretch outward and cool down to extinguish, thereby achieving the purpose of magnetic arc extinguishing.

[0148] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the relay 40 further includes a plurality of connecting pieces, and the plurality of connecting pieces are connected to the plurality of static contacts in a one-to-one correspondence.

[0149] Specifically, the connecting piece can be a conductive piece. The multiple connecting pieces include a first connecting piece 451, a second connecting piece 452 and a third connecting piece 453, wherein the first connecting piece 451 is electrically connected to the first static contact 441, the second connecting piece 452 is electrically connected to the second static contact 442, and the third connecting piece 453 is electrically connected to the third static contact 443.

[0150] Optionally, the first connecting piece 451 can be fixed to the side of the first static contact 441 facing away from the first conductive member 431 via bolts, and can be aligned with and conductively connected to the first static contact 441. The second connecting piece 452 can be fixed to the side of the second static contact 442 facing away from the second conductive member 432 via bolts, and can be aligned with and conductively connected to the first output end of the second static contact 442. The third connecting piece 453 can be fixed to the side of the third static contact 443 facing away from the second conductive member 432 via bolts, and can be aligned with and conductively connected to the third static contact 443.

[0151] By providing a plurality of connecting pieces, the relay 40 can be electrically connected to the battery cells 21 through a portion of the connecting pieces, and the relay 40 can also be electrically connected to other electrical components through another portion of the connecting pieces, thereby completing power supply to other electrical components.

[0152] Combine Figures 5 to 9 As shown, in some embodiments of the present application, at least one connecting piece includes a first connecting portion 4511, a transition portion 4512 and a second connecting portion 4513 arranged in sequence, and the first connecting portion 4511 and the second connecting portion 4513 are respectively arranged on opposite sides of the plate surface of the transition portion 4512.

[0153] For the convenience of description, this application only takes the first connecting piece 451 as an example for illustration.

[0154] Specifically, the first connecting piece 451 has a generally Z-shaped structure, including a first connecting portion 4511, a transition portion 4512, and a second connecting portion 4513, which are sequentially arranged. One of the first connecting portion 4511 and the second connecting portion 4513 is electrically connected to the first static contact 441, and the other of the first connecting portion 4511 and the second connecting portion 4513 is electrically connected to another electrical component. Optionally, the structures of the first connecting piece 451, the second connecting piece 452, and the third connecting piece 453 may be consistent or inconsistent.

[0155] Optionally, the first connection portion 4511 and the second connection portion 4513 are symmetrically arranged about the center of the transition portion 4512. The structures of the first connection portion 4511 and the second connection portion 4513 are consistent.

[0156] By arranging the first connection part 4511 and the second connection part 4513 on opposite sides of the plate surface of the transition part 4512 respectively, the connecting piece can be electrically connected to the static contact through the first connection part 4511 and the second connection part 4513 on either side of the transition part 4512, thereby facilitating the electrical connection between the connecting piece and the static contact.

[0157] Combine Figures 5 to 9 As shown, in some embodiments of the present application, A plurality of first connection holes 4514 are formed through the plate surface of the first connection portion 4511; and / or, A plurality of first connection holes 4514 are formed through the plate surface of the second connection portion 4513 .

[0158] Specifically, the first connection hole 4514 is a light hole. Optionally, two first connection holes 4514 are respectively provided through the surface of the first connection portion 4511 and the second connection portion 4513. When the first connection portion 4511 is connected to the first static contact 441, the first connection portion 4511 can selectively electrically connect to the first static contact 441 through any one of the first connection holes 4514, thereby fixing the first connection piece 451 to the first static contact 441. Alternatively, when the second connection portion 4513 is connected to the first static contact 441, the second connection portion 4513 can selectively electrically connect to the first static contact 441 through any one of the first connection holes 4514, thereby fixing the first connection piece 451 to the first static contact 441.

[0159] Optionally, at least one positioning protrusion 4515 is provided on a side surface of the first connection portion 4511 ; and / or at least one positioning protrusion 4515 is provided on a side surface of the second connection portion 4513 .

[0160] Specifically, a positioning protrusion 4515 is protruded from the side of the first connecting portion 4511, and the positioning protrusion 4515 can abut against other components, such as the rib 4111, so as to position the first connecting portion 4511 and reduce the rotation and displacement of the first connecting piece 451.

[0161] A positioning protrusion 4515 is protruded from the side of the second connecting portion 4513 . The positioning protrusion 4515 can abut against other components, such as the rib 4111 , to position the second connecting portion 4513 and reduce rotation and displacement of the first connecting piece 451 .

[0162] By providing a plurality of first connection holes 4514 , the first connection portion 4511 can selectively adopt any one of the first connection holes 4514 to connect to the static contact, or the second connection portion 4513 can selectively adopt any one of the first connection holes 4514 to connect to the static contact, thereby facilitating electrical connection between the connection piece and the static contact.

[0163] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the relay 40 includes a plurality of relay bodies 403 , and the coil assemblies 42 and the magnet assemblies 43 of the plurality of relay bodies 403 are respectively disposed inside the same housing 41 .

[0164] Specifically, the number of the relay bodies 403 may be two or more. For the convenience of description, the following description is made by taking an example where two relay bodies 403 are disposed inside the same housing 41 .

[0165] The configuration of any one of the two relay bodies 403 may be the same as the configuration of the relay body 403 and the housing 41 in any of the above embodiments.

[0166] By arranging multiple relay bodies 403 together inside the same housing 41, the additional space occupied by the multiple relay bodies 403 configured separately in the housing 41 can be reduced, thereby reducing the space occupancy rate of the relay 40 and improving the integration of the relay 40, facilitating overall assembly.

[0167] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the first conductive member 431 and the second conductive member 432 are arranged at intervals along the first direction Y, and the first conductive member 431 and the second conductive member 432 extend respectively along the first direction Y, and a plurality of relay bodies 403 are arranged side by side along the second direction Z, wherein the first direction Y, the second direction Z and the coil axis Z are perpendicular to each other.

[0168] Specifically, the two relay bodies 403 are arranged relative to each other along the second direction Z, wherein the first conductive member 431 and the second conductive member 432 of any one relay body 403 are respectively arranged at intervals along the first direction Y, and the first conductive member 431 and the second conductive member 432 respectively extend along the first direction Y, that is, the first conductive members 431 of the two relay bodies 403 are arranged relative to each other along the second direction Z, and the second conductive members 432 of the two relay bodies 403 are arranged relative to each other along the second direction Z, thereby reducing the space occupancy rate of the two relay bodies 403 along the first direction Y and increasing the space occupancy rate of the relay 40 along the second direction Z.

[0169] Optionally, the two relay bodies 403 may each be provided with an electric control board 46, and the two electric control boards 46 are arranged between the two relay bodies 403 along the second direction Z; or, the two relay bodies 403 are electrically connected to one electric control board 46, and the electric control board 46 is arranged between the two relay bodies 403 along the second direction Z.

[0170] By arranging the multiple relay bodies 403 side by side along the second direction Z, the space occupied by the multiple relay bodies 403 along the first direction Y can be reduced, and the space occupancy rate of the relay 40 along the second direction Z can be improved.

[0171] Combine Figures 5 to 10As shown, in some embodiments of the present application, the battery device 10 includes multiple relays 40, and the multiple relays 40 include at least a first relay 401 and a second relay 402 connected in sequence to the battery cell 21, wherein the second static contact 442 of the first relay 401 is electrically connected to the battery cell 21, one of the first static contact 441 and the third static contact 443 of the first relay 401 is electrically connected to the first static contact 441 of the second relay 402, and the other of the first static contact 441 and the third static contact 443 of the first relay 401 is electrically connected to the third static contact 443 of the second relay 402.

[0172] Specifically, the multiple relays 40 include a first relay 401 and a second relay 402 connected in series with the battery cell 21. The multiple relays 40 may also include another number of relays connected in series or in parallel with the first relay 401 and the second relay 402. For ease of description, this application only uses the battery cell 21, the first relay 401, and the second relay 402 connected in series as an example.

[0173] By connecting the battery cell 21, the first relay 401 and the second relay 402 in sequence, the electric energy output by the battery cell 21 is first diverted by the first relay 401, thereby reducing the arc generated when the first relay 401 is disconnected. The diverted electric energy is then integrated by the second relay 402, thereby achieving electric energy that can meet the load power and thus meet the power demand of the load.

[0174] Combine Figure 1 、 Figure 2 、 Figures 5 to 10 As shown, in a second aspect, the present application proposes an electrical device, which includes the battery device 10 of any of the above embodiments.

[0175] Since the electrical equipment in the present application has the same technical features as the battery device 10 in any of the above embodiments and can achieve the same technical effects, it will not be described in detail here.

[0176] like Figure 1 As shown, in some embodiments of the present application, the electrical device may be a vehicle 1, which includes a battery device 10 according to any of the above embodiments. The battery device 10 is used to provide electrical energy to the vehicle 1 and to drive the vehicle 1 to move.

[0177] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0178] Combine Figures 5 to 9 As shown, in some embodiments of the present application, the battery device 10 includes at least one battery cell 21 and a relay 40, and the relay 40 is electrically connected to the battery cell 21. The relay 40 includes a housing 41 and a relay body 403. At least a portion of the relay body 403 is disposed inside the housing 41. The relay body 403 includes a coil assembly 42, a magnet assembly 43, and a plurality of static contacts. The coil assembly 42 includes a coil that can generate a magnetic field when energized. The magnet assembly 43 includes a first conductive member 431 and a second conductive member 432. The first conductive member 431 and the second conductive member 432 are respectively disposed inside the same housing 41, and the first conductive member 431 and the second conductive member 432 are configured to be driven by the magnetic field when the coil is energized. The multiple static contacts include a first static contact 441, a second static contact 442, and a third static contact 443, wherein the first conductive member 431 is configured to be electrically connected to the first static contact 441 and the second static contact 442, and the second conductive member 432 is configured to be electrically connected to the second static contact 442 and the third static contact 443, and the coil includes a first coil 4211 and a second coil 4221, and the first conductive member 431 is configured to be driven under the action of the magnetic field when the first coil 4211 is in a power-on state, and the second conductive member 432 is configured to be driven under the action of the magnetic field when the second coil 4221 is in a power-on state.

[0179] Optionally, the first conductive member 431 has a first position when the first coil 4211 is not energized, and further has a second position away from the first coil 4211 under the influence of the magnetic field when the first coil 4211 is energized. When the first conductive member 431 is in the second position, the first conductive member 431 is electrically connected to the first static contact 441 and the second static contact 442, respectively. The second conductive member 432 has a first position when the second coil 4221 is not energized, and further has a second position away from the second coil 4221 under the influence of the magnetic field when the second coil 4221 is energized. When the second conductive member 432 is in the second position, the second conductive member 432 is electrically connected to the second static contact 442 and the third static contact 443, respectively.

[0180] Optionally, the coil assembly 42 includes a first coil assembly 421 and a second coil assembly 422, the first coil assembly 421 includes a first shell 4212 and a first coil 4211 disposed in the first shell 4212, the first shell 4212 is disposed inside the outer shell 41, the second coil assembly 422 includes a second shell 4222 and a second coil 4221 disposed in the second shell 4222, the second shell 4222 is disposed inside the outer shell 41.

[0181] Optionally, along the axial direction of the first coil 4211 , the projection of the first conductive member 431 at least partially overlaps with the projection of the first coil 4211 . Along the axial direction of the second coil 4221 , the projection of the second conductive member 432 at least partially overlaps with the projection of the second coil 4221 .

[0182] Optionally, the relay 40 further includes a first coil connection port 4112 extending through the housing 41 and a first wire extending through the first coil connection port 4112. The first coil 4211 is electrically connected to the battery cell 21 via the first wire. The relay 40 further includes a second coil connection port 4113 extending through the housing 41 and a second wire extending through the second coil connection port 4113. The second coil 4221 is electrically connected to the battery cell 21 via the second wire.

[0183] Optionally, the second static contact 442 is provided with a first connection end 4421 and a second connection end 4422 on the side facing the magnet assembly 43, the first connection end 4421 and the second connection end 4422 are electrically connected, and the first connection end 4421 is configured to be electrically connected to the first conductive member 431, and the second connection end 4422 is configured to be electrically connected to the second conductive member 432.

[0184] Optionally, a first output end 4423 is provided on a side of the second static contact 442 facing away from the magnet assembly 43 , and the first output end 4423 , the first connection end 4421 and the second connection end 4422 are integrally formed.

[0185] Optionally, the first static contact 441, the second static contact 442 and the third static contact 443 are arranged at intervals along the first direction Y, the first output end 4423 protrudes from the outer surface of the second static contact 442, and is arranged between the first connection end 4421 and the second connection end 4422 along the first direction Y, and the first direction Y intersects with the coil axis X.

[0186] Optionally, the first conductive member 431 and the second conductive member 432 are spaced apart along the first direction Y, and the first conductive member 431 and the second conductive member 432 extend along the first direction Y respectively.

[0187] Optionally, the first output end 4423 is provided on the outside of the housing 41 , and the first connection end 4421 and the second connection end 4422 are respectively plugged into the inside of the housing 41 .

[0188] Optionally, a portion of the first static contact 441 extends into the interior of the housing 41 and is configured to be electrically connected to the first conductive member 431, while another portion of the first static contact 441 is located outside the housing 41 and is configured to be electrically connected to an external conductive member. A portion of the third static contact 443 extends into the interior of the housing 41 and is configured to be electrically connected to the second conductive member 432, while another portion of the third static contact 443 is located outside the housing 41 and is configured to be electrically connected to an external conductive member.

[0189] Optionally, a convex rib 4111 is protruding from the outer surface of the housing 41 , and a portion of the convex rib 4111 is provided between at least two static contacts.

[0190] Optionally, the first conductive member 431 and the second conductive member 432 respectively include conductive armatures.

[0191] Optionally, the magnet assembly 43 further includes a ceramic shell 433 . The ceramic shell 433 is disposed inside the outer shell 41 . The first conductive member 431 and the second conductive member 432 are respectively disposed inside the ceramic shell 433 .

[0192] Optionally, the ceramic shell 433 includes a main body 4331 and a sealing plate 4332, the main body 4331 is surrounded by an installation cavity with an opening at one end, the sealing plate 4332 is connected to the main body 4331 and blocks at least part of the opening, the first conductive member 431 and the second conductive member 432 are jointly arranged in the installation cavity, and along the coil axis X, the projections of the first conductive member 431 and the second conductive member 432 are respectively within the projection range of the same sealing plate 4332.

[0193] Optionally, an opening is formed on the side of the main body 4331 facing the coil assembly 42, and a plurality of mounting holes 4333 are penetrated through the side of the main body 4331 facing away from the coil assembly 42. At least part of the structure of any static contact passes through the mounting hole 4333 and is inserted into the mounting cavity formed by the main body 4331.

[0194] Optionally, the magnet assembly 43 further includes at least one magnet 434 , which is disposed outside the ceramic shell 433 , and a magnetic field direction of the magnet 434 is perpendicular to the axial direction X of the coil.

[0195] Optionally, the relay 40 further includes a plurality of connecting pieces, and the plurality of connecting pieces are connected to the plurality of static contacts in a one-to-one correspondence.

[0196] Optionally, at least one connecting piece includes a first connecting portion 4511 , a transition portion 4512 and a second connecting portion 4513 arranged in sequence, and the first connecting portion 4511 and the second connecting portion 4513 are respectively arranged on opposite sides of the plate surface of the transition portion 4512 .

[0197] Optionally, a plurality of first connection holes 4514 are formed through the plate surface of the first connection portion 4511. A plurality of first connection holes 4514 are formed through the plate surface of the second connection portion 4513.

[0198] Optionally, the relay 40 includes a plurality of relay bodies 403, and the coil assemblies 42 and magnet assemblies 43 of the plurality of relay bodies 403 are respectively arranged inside the same housing 41. The first conductive member 431 and the second conductive member 432 are arranged at intervals along the first direction Y, and the first conductive member 431 and the second conductive member 432 extend respectively along the first direction Y, and the plurality of relay bodies 403 are arranged side by side along the second direction Z, wherein the first direction Y, the second direction Z and the coil axis X are perpendicular to each other. The first connection hole, the first connection hole, the first connection hole, the first connection hole, the first connection hole, the first connection hole, the above description is only a preferred specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any person skilled in the art within the technical scope disclosed in the present application should be covered within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection 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; The relay comprises a housing and a relay body, wherein at least part of the structure of the relay body is arranged inside the housing, and the relay body comprises: A coil assembly, the coil assembly comprising a coil capable of generating a magnetic field when energized; a magnet assembly, the magnet assembly comprising a first conductive member and a second conductive member, the first conductive member and the second conductive member being respectively disposed inside the same housing, and the first conductive member and the second conductive member being configured to be driven by a magnetic field when the coil is energized; A plurality of static contacts, including a first static contact, a second static contact, and a third static contact; In which, the first conductive member is configured to be electrically connected to the first static contact and the second static contact, the second conductive member is configured to be electrically connected to the second static contact and the third static contact, the coil includes a first coil and a second coil, the first conductive member is configured to be driven under the action of a magnetic field when the first coil is energized, and the second conductive member is configured to be driven under the action of a magnetic field when the second coil is energized.

2. The battery device according to claim 1, wherein: The first conductive member has a first position when the first coil is not energized, and also has a second position away from the first coil under the action of a magnetic field when the first coil is energized, and when the first conductive member is in the second position, the first conductive member is electrically connected to the first static contact and the second static contact, respectively; and / or, The second conductive member has a first position when the second coil is not energized, and the second conductive member also has a second position away from the second coil under the action of the magnetic field when the second coil is energized. When the second conductive member is in the second position, the second conductive member is electrically connected to the second static contact and the third static contact, respectively.

3. The battery device according to claim 1, wherein: The coil assembly includes a first coil assembly and a second coil assembly. The first coil assembly includes a first shell and the first coil arranged in the first shell. The first shell is arranged inside the shell. The second coil assembly includes a second shell and the second coil arranged in the second shell. The second shell is arranged inside the shell.

4. The battery device according to claim 1, wherein: Along the axial direction of the first coil, the projection of the first conductive member at least partially overlaps with the projection of the first coil; and / or, Along the axial direction of the second coil, a projection of the second conductive member at least partially overlaps with a projection of the second coil.

5. The battery device according to claim 1, wherein: The relay further includes a first coil connection port penetrating the housing and a first wire passing through the first coil connection port, wherein the first coil is electrically connected to the battery cell via the first wire; and / or, The relay further includes a second coil connection port penetrating the housing and a second wire passing through the second coil connection port, and the second coil is electrically connected to the battery cell via the second wire.

6. The battery device according to any one of claims 1 to 5, 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 electrically connected, and the first connection end is configured to be electrically connected to the first conductive member, and the second connection end is configured to be electrically connected to the second conductive member.

7. The battery device according to claim 6, characterized in that A first output end is provided on a side of the second static contact facing away from the magnet assembly, and the first output end, the first connecting end and the second connecting end are integrally formed.

8. The battery device according to claim 7, characterized in that The first static contact, the second static contact and the third static contact are spaced apart along a first direction, the first output end protrudes from the outer surface of the second static contact and is arranged between the first connection end and the second connection end along the first direction, and the first direction intersects with the axial direction of the coil.

9. The battery device according to claim 8, characterized in that The first conductive member and the second conductive member are spaced apart along the first direction, and the first conductive member and the second conductive member extend along the first direction respectively.

10. The battery device according to claim 7, characterized in that The first output end is arranged outside the shell, and the first connection end and the second connection end are respectively plugged into the inside of the shell.

11. The battery device according to any one of claims 1 to 5, characterized in that Part of the first static contacts extends into the interior of the housing and is configured to be electrically connected to the first conductive member, and another part of the first static contacts is provided outside the housing and is configured to be electrically connected to an external conductive member; and / or, Part of the third static contact extends into the interior of the housing and is configured to be electrically connected to the second conductive member, and another part of the third static contact is arranged outside the housing and is configured to be electrically connected to an external conductive member.

12. The battery device according to any one of claims 1 to 5, characterized in that The outer surface of the shell is provided with convex ribs, and a portion of the convex ribs is provided between at least two of the static contacts.

13. The battery device according to any one of claims 1 to 5, characterized in that The first conductive member and / or the second conductive member includes an armature having conductivity.

14. The battery device according to any one of claims 1 to 5, characterized in that The magnet assembly further includes a ceramic shell, which is disposed inside the outer shell. The first conductive member and the second conductive member are respectively disposed inside the ceramic shell.

15. The battery device according to claim 14, characterized in that The ceramic shell includes a main body and a sealing plate. The main body is surrounded by a mounting cavity with an opening at one end. The sealing plate is connected to the main body and blocks at least part of the opening. The first conductive member and the second conductive member are jointly arranged in the mounting cavity, and along the axial direction of the coil, the projections of the first conductive member and the second conductive member are respectively within the projection range of the same sealing plate.

16. The battery device according to claim 15, characterized in that The opening is formed on the side of the main body facing the coil assembly, and a plurality of mounting holes are penetrated through the side of the main body away from the coil assembly. At least part of the structure of any one of the static contacts passes through the mounting hole and is inserted into the mounting cavity formed by the main body.

17. The battery device according to claim 14, wherein: The magnet assembly further includes at least one magnet, which is arranged outside the ceramic shell, and the magnetic field direction of the magnet is perpendicular to the axial direction of the coil.

18. The battery device according to any one of claims 1 to 5, characterized in that The relay further includes a plurality of connecting pieces, and the plurality of connecting pieces are connected to the plurality of static contacts in a one-to-one correspondence.

19. The battery device according to claim 18, wherein: 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.

20. The battery device according to claim 19, wherein: 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.

21. The battery device according to any one of claims 1 to 5, characterized in that The relay comprises a plurality of relay bodies, and the coil components and magnet components of the plurality of relay bodies are respectively arranged inside the same housing.

22. The battery device according to claim 21, characterized in that The first conductive member and the second conductive member are spaced apart along a first direction, and the first conductive member and the second conductive member extend respectively along the first direction, and a plurality of the relay bodies are arranged side by side along a second direction, wherein the first direction, the second direction and the axial direction of the coil are perpendicular to each other.

23. The battery device according to any one of claims 1 to 5, characterized in that The battery device includes a plurality of relays, and the plurality of relays include at least a first relay and a second relay connected in sequence to the battery cells, wherein the second static contact of the first relay is electrically connected to the battery cells, one of the first static contact and the third static contact of the first relay is electrically connected to the first static contact of the second relay, and the other of the first static contact and the third static contact of the first relay is electrically connected to the third static contact of the second relay.

24. An electrical device, characterized in that: The electric device comprises the battery device according to any one of claims 1 to 23.

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