Battery device and electric appliance

Abstract

This application relates to a battery device and an electrical appliance. The battery device of this application includes at least one battery cell and a relay. The relay is electrically connected to the battery cell. The relay includes a housing and a relay body. At least a portion of the relay body is disposed inside the housing. The relay body includes a coil assembly and a magnet assembly. The coil assembly includes a coil that generates a magnetic field when energized. The magnet assembly includes a first conductive element and a second conductive element, which are respectively disposed inside the same housing. The coil includes a first coil and a second coil. The first conductive element is configured to move away from the first coil under the influence of the magnetic field when the first coil is energized. The second conductive element is configured to move away from the second coil under the influence of the magnetic field when the second coil is energized. According to the battery device of this application, the space occupied by the relay can be reduced, thereby reducing the size of the battery device.

Description

Technical Field

[0001] This application belongs to the field of battery equipment technology, specifically relating to a battery device and electrical equipment. Background Technology

[0002] Relays are used to control the on / off state of high-voltage circuits in electric vehicles. After the relay is energized, current is conducted through its stationary and moving contacts. Traditional single-contact relays are prone to arcing during high-frequency disconnection, leading to contact welding or reduced lifespan. To address the issue of arcing during disconnection in traditional single-contact relays, causing contact wear or failure, current designs generally employ multi-stage relay circuits. This involves connecting multiple relays in series or parallel, allowing for phased circuit disconnection, reducing arcing, and extending lifespan. However, using multiple relays simultaneously increases their space occupancy. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the purpose of this application is to provide a battery device and electrical equipment that can effectively reduce the problem of increased space occupancy caused by the combined use of multiple relays:

[0004] In a first aspect, this application provides a battery device, comprising:

[0005] At least one battery cell;

[0006] The relay is electrically connected to a single battery cell;

[0007] The relay includes a housing and a relay body, with at least a portion of the relay body located inside the housing. The relay body includes:

[0008] A coil assembly, comprising a coil that generates a magnetic field when energized;

[0009] A magnet assembly, comprising a first conductive element and a second conductive element, wherein the first conductive element and the second conductive element are respectively disposed inside the same housing;

[0010] The coil assembly includes a first coil assembly and a second coil assembly. The coil includes a first coil forming the first coil assembly and a second coil forming the second coil assembly. The first conductive element is configured to move away from the first coil under the influence of the magnetic field when the first coil is energized, and the second conductive element is configured to move away from the second coil under the influence of the magnetic field when the second coil is energized.

[0011] According to the battery device of this application, the circuit can be connected by the first conductive element and / or the second conductive element, thereby realizing the function of multiple relays used in combination. Moreover, the first conductive element and the second conductive element are respectively disposed inside the same housing. Compared with the first conductive element and the second conductive element being disposed inside different housings, the number of housings and the space occupied by the housings can be reduced, thereby reducing the space occupancy rate of the relays and thus reducing the size of the battery device.

[0012] In some embodiments of this application, the relay body further includes a plurality of stationary contacts, including a first stationary contact, a second stationary contact, a third stationary contact, and a fourth stationary contact. A first conductive element is configured to be electrically connected to the first stationary contact and the second stationary contact, respectively, and a second conductive element is configured to be electrically connected to the third stationary contact and the fourth stationary contact, respectively.

[0013] By electrically connecting the first conductive element to the first and second stationary contacts respectively, one of the first and second stationary contacts can serve as a circuit input terminal, and the other as a circuit output terminal, thereby forming a conductive circuit through the first conductive element, the first stationary contact, and the second stationary contact. Similarly, by electrically connecting the second conductive element to the third and fourth stationary contacts respectively, one of the third and fourth stationary contacts can serve as a circuit input terminal, and the other as a circuit output terminal, thereby forming a conductive circuit through the second conductive element, the third stationary contact, and the fourth stationary contact.

[0014] In some embodiments of this application, the first conductive element and the second conductive element each have a first position when the coil is not energized, and the first conductive element and the second conductive element each have a second position away from the coil under the action of the magnetic field when the coil is energized. When the first conductive element is in the second position, the first conductive element is electrically connected to the first stationary contact and the second stationary contact respectively. When the second conductive element is in the second position, the second conductive element is electrically connected to the third stationary contact and the fourth stationary contact respectively.

[0015] When the coil is energized, the first conductive element can be driven to the second position under the influence of the coil's magnetic field, and is used to conductively connect the first stationary contact and the second stationary contact, thereby forming a conductive circuit through the first conductive element, the first stationary contact, and the second stationary contact. When the coil is energized, the second conductive element can be driven to the second position under the influence of the coil's magnetic field, and is used to conductively connect the third stationary contact and the fourth stationary contact, thereby forming a conductive circuit through the second conductive element, the third stationary contact, and the fourth stationary contact.

[0016] In some embodiments of this application, the first stationary contact and the third stationary contact are spaced apart along the first direction, the second stationary contact and the fourth stationary contact are spaced apart along the first direction, and the second stationary contact and the fourth stationary contact are respectively located on the same side of the first stationary contact and the third stationary contact along the second direction, wherein the first direction, the second direction and the axis of the coil are perpendicular to each other.

[0017] By arranging the first stationary contact, the second stationary contact, the third stationary contact, and the fourth stationary contact in a roughly square structure as described above, the size of the relay can be reduced in either the first or the second direction, thereby reducing the space occupancy of the relay.

[0018] In some embodiments of this application, the first conductive element and the second conductive element are spaced apart along a first direction, and the first conductive element and the second conductive element extend along a second direction, respectively.

[0019] By arranging the first conductive element and the second conductive element at intervals along the first direction, with the first conductive element located on one side of the first stationary contact and the second stationary contact, and the second conductive element located on one side of the third stationary contact and the fourth stationary contact, and with the first conductive element and the second conductive element extending along the second direction respectively, the first conductive element can be electrically connected to the first stationary contact and the second stationary contact respectively, and the second conductive element can be electrically connected to the third stationary contact and the fourth stationary contact respectively.

[0020] In some embodiments of this application, the relay body further includes a conductive connector, which is detachably electrically connected to the second stationary contact and the fourth stationary contact, respectively.

[0021] When the conductive connector is electrically connected to both the second and fourth stationary contacts simultaneously, one of the first and third stationary contacts can be used as the circuit input terminal, and the other of the first and third stationary contacts and the conductive connector can be used as the circuit output terminal. This allows the first and second conductive components to be connected in series, enabling voltage division in the circuit. Alternatively, the conductive connector can be used as the circuit input terminal, and the first and third stationary contacts can be used as circuit output terminals respectively. This allows the first and second conductive components to be connected in parallel, enabling current shunting in the circuit. This reduces the generation of arcs when the relay disconnects, reduces wear or failure of the stationary contacts, and improves the operational reliability of the battery device.

[0022] In some embodiments of this application, the conductive connector is provided with a plurality of first connection holes at intervals on the side away from the magnet assembly, and the first connection holes are used for electrical connection with external conductive components.

[0023] By providing multiple first connection holes, the external conductive component can be selectively electrically connected to any one of the first connection holes, thereby facilitating the connection between the external conductive component and the conductive connector.

[0024] In some embodiments of this application, the second stationary contact and the fourth stationary contact are respectively disposed inside the housing, the housing is provided with a through-hole, and at least a portion of the conductive connector is configured to extend through the through-hole into the interior of the housing and be electrically connected to the second stationary contact and the fourth stationary contact.

[0025] By placing at least a portion of the conductive connector inside the housing and electrically connecting it to the second and fourth stationary contacts respectively, it is possible to reduce accidental contact between the conductive connector and external conductive components and reduce the occurrence of short circuits. At the same time, by providing mounting ports corresponding to the conductive connectors, the conductive connectors can be inserted into the housing through the mounting ports, thereby facilitating the disassembly or connection of the conductive connectors to the second and fourth stationary contacts respectively.

[0026] In some embodiments of this application, the relay further includes a plurality of connecting pieces, including a first connecting piece, a second connecting piece, and a third connecting piece, wherein the first connecting piece is electrically connected to a first stationary contact, the second connecting piece is electrically connected to a third stationary contact, and the third connecting piece is electrically connected to a conductive connector.

[0027] By setting multiple connecting pieces, the relay can be electrically connected to a battery cell through a number of connecting pieces, and the relay can also be electrically connected to other electrical components through another number of connecting pieces, thereby completing the power supply to other electrical components.

[0028] In some embodiments of this application, at least one connecting piece includes a first connecting portion, a transition portion, and a second connecting portion arranged sequentially, with the first connecting portion and the second connecting portion respectively located on opposite sides of the plate surface of the transition portion.

[0029] By placing the first connecting part and the second connecting part on opposite sides of the transition plate, the connecting piece can be electrically connected to the stationary contact through the first connecting part and the second connecting part on either side of the transition plate, thereby facilitating the electrical connection between the connecting piece and the stationary contact.

[0030] In some embodiments of this application,

[0031] The first connecting part has multiple second connecting holes extending through its plate surface; and / or,

[0032] The second connecting part has multiple second connecting holes through its plate surface.

[0033] By providing multiple second connection holes, the first connection part can selectively connect to the stationary contact using any one of the second connection holes, or the second connection part can selectively connect to the stationary contact using any one of the second connection holes, thereby facilitating the electrical connection between the connecting piece and the stationary contact.

[0034] In some embodiments of this application,

[0035] A portion of the first stationary contact extends into the interior of the housing and is configured to be electrically connected to a first conductive element; another portion of the first stationary contact is located on the exterior of the housing and is configured to be electrically connected to an external conductive element; and / or,

[0036] A portion of the third stationary contact extends into the interior of the housing and is configured to be electrically connected to the second conductive element, while another portion of the third stationary contact is located on the exterior of the housing and is configured to be electrically connected to the external conductive element.

[0037] By extending a portion of the first stationary contact into the interior of the housing, it facilitates electrical connection between the first stationary contact and the first conductive element. The other portion of the first stationary contact is located on the exterior of the housing, facilitating electrical connection between the first stationary contact and an external conductive element. Similarly, by extending a portion of the third stationary contact into the interior of the housing, it facilitates electrical connection between the third stationary contact and the second conductive element. The other portion of the third stationary contact is located on the exterior of the housing, facilitating electrical connection between the third stationary contact and an external conductive element.

[0038] In some embodiments of this application, the outer surface of the housing is provided with protruding ribs, and at least two stationary contacts are provided with partial protruding ribs.

[0039] By providing ribs between at least two stationary contacts, short circuits between the stationary contacts on both sides of the ribs can be reduced when an external conductive component is connected to the stationary contacts.

[0040] In some embodiments of this application, the first conductive element and / or the second conductive element includes an armature that is conductive.

[0041] The armature is magnetic and can be driven by the magnetic field generated by the energized coil. At the same time, the armature is also conductive, so that the circuit can be connected through the first conductive element and / or the second conductive element.

[0042] In some embodiments of this application, the magnet assembly includes a first magnet assembly and a second magnet assembly, the first magnet assembly having a first conductive element and the second magnet assembly having a second conductive element.

[0043] When the first coil of the first coil assembly is energized, it can drive the first conductive element to move, thereby conducting the circuit through the first conductive element. When the second coil of the second coil assembly is energized, it can drive the second conductive element to move, thereby conducting the circuit through the second conductive element, thus enabling the first and second conductive elements to be used to conduct the circuit respectively.

[0044] In some embodiments of this application,

[0045] Along the axial direction of the first coil, the projection of the first conductive element at least partially overlaps with the projection of the first coil; and / or,

[0046] Along the axial direction of the second coil, the projection of the second conductive element at least partially overlaps with the projection of the second coil.

[0047] By at least partially overlapping the projection of the first conductive element with the projection of the first coil, the magnetic force generated by the first coil on the first conductive element when energized can be increased, thereby driving the first conductive element to move. Similarly, by at least partially overlapping the projection of the second conductive element with the projection of the second coil, the magnetic force generated by the second coil on the second conductive element when energized can be increased, thereby driving the second conductive element to move.

[0048] In some embodiments of this application,

[0049] The first coil assembly further includes a first housing, which is disposed inside the outer casing, and the first coil is disposed inside the first housing; and / or,

[0050] The second coil assembly also includes a second housing, which is located inside the outer casing, and the second coil is located inside the second housing.

[0051] By placing the first housing inside the outer casing and the first coil inside the first housing, assembly can be performed by first placing the first coil inside the first housing and then assembling the first housing into the outer casing, thus facilitating the modular assembly of the relay. Similarly, by placing the second housing inside the outer casing and the second coil inside the second housing, assembly can be performed by first placing the second coil inside the second housing and then assembling the second housing into the outer casing, thus facilitating the modular assembly of the relay.

[0052] In some embodiments of this application,

[0053] The relay also includes a first coil terminal penetrating the housing and a first wire passing through the first coil terminal, the first coil being electrically connected to a single battery cell via the first wire; and / or,

[0054] The relay also includes a second coil terminal that passes through the housing and a second wire that passes through the second coil terminal. The second coil is electrically connected to the battery cell through the second wire.

[0055] The first coil is electrically connected to a battery cell via a first wire, thereby supplying power to the first coil through the battery cell and causing the first coil to generate a magnetic field force acting on the first conductive element when energized. The second coil is electrically connected to a battery cell via a second wire, thereby supplying power to the second coil through the battery cell and causing the second coil to generate a magnetic field force acting on the second conductive element when energized.

[0056] In some embodiments of this application,

[0057] The first magnet assembly also includes a first ceramic housing, which is disposed inside the outer shell, and a first conductive element is disposed inside the first ceramic housing;

[0058] And / or, the second magnet assembly further includes a second ceramic housing disposed inside the outer casing, and the second conductive element disposed inside the second ceramic housing.

[0059] By placing the first conductive element inside the first ceramic housing, the arc generated when the first conductive element breaks the stationary contact can be effectively isolated, reducing the risk of the arc breaking down the first ceramic housing and damaging other components within the relay. Simultaneously, the integration of the first magnet assembly is improved; during assembly, the first conductive element can be placed inside the first ceramic housing first, and then the first ceramic housing can be assembled into the outer casing, facilitating modular assembly of the relay. Similarly, by placing the second conductive element inside the second ceramic housing, the arc generated when the second conductive element breaks the stationary contact can be effectively isolated, reducing the risk of the arc breaking down the second ceramic housing and damaging other components within the relay. Furthermore, the integration of the second magnet assembly is improved; during assembly, the second conductive element can be placed inside the second ceramic housing first, and then the second ceramic housing can be assembled into the outer casing, facilitating modular assembly of the relay.

[0060] In some embodiments of this application, the relay includes multiple relay bodies, and the coil assemblies and magnet assemblies of the multiple relay bodies are respectively disposed inside the same housing.

[0061] By housing multiple relay bodies together inside the same housing, the extra space occupied by each relay body in its own housing can be reduced, thereby reducing the space occupancy rate of the relays and improving their integration, making overall assembly easier.

[0062] In some embodiments of this application, the first conductive element and the second conductive element of any relay body are spaced apart along a first direction, and the first conductive element and the second conductive element of any relay body extend along a second direction respectively. Multiple relay bodies are arranged side by side along the second direction, wherein the first direction, the second direction and the axis of the coil are perpendicular to each other.

[0063] By arranging multiple relay bodies side by side along the second direction, the space occupied by multiple relay bodies along the first direction can be reduced, and the space occupancy rate of the relays along the second direction can be increased.

[0064] Secondly, this application proposes an electrical device that includes the battery device described above.

[0065] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0066] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0067] Figure 1 This is a structural schematic diagram of a vehicle provided in one embodiment of this application;

[0068] Figure 2 This is a schematic diagram of the structure of a battery device provided in one embodiment of this application;

[0069] Figure 3 This is a schematic diagram of the structure of a battery cell assembly provided in one embodiment of this application;

[0070] Figure 4 This is an exploded structural diagram of a battery cell provided in one embodiment of this application;

[0071] Figure 5 This is a schematic diagram of the structure of a relay provided in one embodiment of this application;

[0072] Figure 6 yes Figure 5 A schematic diagram of the relay structure after removing the connecting piece;

[0073] Figure 7 yes Figure 6 A schematic diagram of the disassembled structure of the relay in the diagram;

[0074] Figure 8 yes Figure 6 A schematic diagram of the relay body after removing the outer casing;

[0075] Figure 9 This is a schematic diagram of the structure of the third connecting piece provided in another embodiment of this application;

[0076] Figure 10 This is a schematic diagram of the structure of a relay provided in another embodiment of this application;

[0077] Figure 11 yes Figure 10 A schematic diagram of the relay structure after removing the connecting piece;

[0078] Figure 12 yes Figure 11 A schematic diagram of the relay after removing its outer casing;

[0079] Figure 13 This is a schematic diagram of the electrical connection between a single battery cell and multiple relays in a battery device provided in one embodiment of this application.

[0080] The reference numerals in the detailed embodiments are as follows:

[0081] 1. Vehicles;

[0082] 10. Battery assembly; 11. Controller; 12. Motor;

[0083] 20. Battery cell assembly; 21. Battery cell; 211. End cap; 212. Housing; 213. Electrode assembly; 214. Electrode terminal;

[0084] 30. Box; 301. First box; 302. Second box;

[0085] 40. Relay; 401. First relay; 402. Second relay; 403. Relay body;

[0086] 41. Outer shell; 411. Outer shell body; 4111. Protruding rib; 4112. Mounting port; 4113. First coil wiring port; 4114. Second coil wiring port; 412. Base plate;

[0087] 42. Coil assembly; 421. First coil assembly; 4211. First coil; 4212. First housing; 422. Second coil assembly; 4221. Second housing;

[0088] 43. Magnet assembly; 431. First magnet assembly; 4311. First conductive element; 4312. First ceramic housing; 4313. First magnet; 4314. First support plate; 4315. First spring; 4316. First body part; 4317. First sealing plate; 432. Second magnet assembly; 4321. Second conductive element; 4322. Second ceramic housing; 4323. Second magnet; 4324. Second support plate; 4325. Second spring; 4326. Second body part; 4327. Second sealing plate;

[0089] 441. First stationary contact; 442. Second stationary contact; 443. Third stationary contact; 444. Fourth stationary contact;

[0090] 45. Conductive connector; 451. First connecting hole;

[0091] 461. First connecting piece; 462. Second connecting piece; 463. Third connecting piece; 4631. First connecting part; 4632. Transition part; 4633. Second connecting part; 4634. Second connecting hole; 4635. Positioning protrusion;

[0092] 47. Electronic control board;

[0093] X, coil axis; Y, first direction; Z, second direction. Detailed Implementation

[0094] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0095] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0096] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0097] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0098] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0099] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0100] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other indications of orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0101] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0102] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0103] Relays are used to control the on / off state of high-voltage circuits in electric vehicles. After the relay is energized, current is conducted through its stationary and moving contacts. Traditional single-contact relays are prone to arcing during high-frequency disconnection, leading to contact welding or reduced lifespan. To address the issue of arcing during disconnection in traditional single-contact relays, causing contact wear or failure, current designs generally employ multi-stage relay circuits. This involves connecting multiple relays in series or parallel, allowing for phased circuit disconnection, reducing arcing, and extending lifespan. However, using multiple relays simultaneously increases their space occupancy.

[0104] To reduce the increased space occupancy caused by using multiple relays in combination, this application proposes a battery device and an electrical appliance including the battery device. According to the battery device and electrical appliance of this application, the number of housings and the space occupied by the housings can be reduced, thereby reducing the space occupancy of the relays and consequently reducing the size of the battery device.

[0105] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0106] In some implementations, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0107] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0108] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.

[0109] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0110] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0111] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0112] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.

[0113] In some embodiments, the battery device refers to an energy storage device, which includes a housing with a door on at least one side. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0114] In some embodiments, the 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.

[0115] 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 when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application can be any power system that requires energy storage devices.

[0116] The technical solutions described in this application are applicable to various electrical devices and energy storage devices that use battery cells and battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, spacecraft and energy storage containers, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0117] Figure 1 This is a structural schematic diagram of vehicle 1 provided for some embodiments of this application. For example... Figure 1 As shown, vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 10 is installed inside vehicle 1, and the battery device 10 can be located at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1; for example, the battery device 10 can serve as the operating power source for vehicle 1. Vehicle 1 may also include a controller 11 and a motor 12. The controller 11 is used to control the battery device 10 to supply power to the motor 12, for example, to meet the power needs of vehicle 1 during starting, navigation, and driving.

[0118] In some embodiments of this application, the battery device 10 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0119] Figure 2 This is a schematic diagram of the structure of a battery device 10 according to an embodiment of this application. Figure 3 This is a schematic diagram of the structure of a battery cell assembly 20 according to one embodiment of this application. (In conjunction with...) Figure 2 and Figure 3 As shown, to meet different power demands, the battery device 10 may include multiple battery cells 21, where each battery cell 21 is the smallest unit constituting the battery device 10. Multiple battery cells 21 can be connected in series and / or in parallel via electrode terminals for various applications. Furthermore, the multiple battery cells 21 can be connected in series, in parallel, or in a mixed configuration, where a mixed configuration refers to a combination of series and parallel connections.

[0120] Combination Figure 2 and Figure 3As shown, the battery device 10 may include multiple battery cell assemblies 20 and a housing 30, with the multiple battery cell assemblies 20 housed inside the housing 30. The housing 30 is used to house the battery cells 21 or battery cell assemblies 20 to reduce the impact of liquids or other foreign objects on the charging or discharging of the battery cells 21. The housing 30 may be a simple three-dimensional structure such as a single cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders, or spheres. The material of the housing 30 may be an alloy material such as aluminum alloy or iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0121] In some embodiments, the housing 30 may include a first housing 301 and a second housing 302, which overlap each other, and together define a space for accommodating the battery cell 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, with the first housing 301 covering the open side of the second housing 302 so that the first housing 301 and the second housing 302 together define a space for accommodating the battery cell 21; alternatively, the first housing 301 and the second housing 302 may both be hollow structures with one side open, with the open side of the first housing 301 covering the open side of the second housing 302.

[0122] The battery cell assembly 20 may include multiple battery cells 21. These battery cells 21 may be connected in series, parallel, or a combination thereof to form the battery cell assembly 20. The multiple battery cell assemblies 20 may then be connected in series, parallel, or a combination thereof to form the battery device 10. The battery cell 21 may be cylindrical, flat, cuboid, or other shapes, and this application does not limit this. Battery cells 21 are generally classified into three types according to their packaging method: cylindrical battery cells, cuboid battery cells, and pouch battery cells, and this application does not limit this either. However, for the sake of brevity, the following embodiments will use a cuboid lithium-ion battery cell 21 as an example for explanation.

[0123] Figure 4 This is an exploded structural diagram of a battery cell 21 provided for some embodiments of this application. The battery cell 21 refers to the smallest unit constituting the battery device 10. For example... Figure 4 The battery cell 21 includes an end cap 211, a housing 212, and an electrode assembly 213.

[0124] End cap 211 refers to a component that covers the opening of housing 212 to isolate the internal environment of battery cell 21 from the external environment. The shape of end cap 211 can be adapted to the shape of housing 212 to fit it. Optionally, end cap 211 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 211 is not easily deformed under pressure and impact, giving battery cell 21 higher structural strength and improved safety performance. Functional components such as electrode terminals 214 can be provided on end cap 211. Electrode terminals 214 can be used for electrical connection with electrode assembly 213 to output or input electrical energy to battery cell 21. In some embodiments, end cap 211 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 21 reaches a threshold. In some embodiments, an insulating element may be provided on the inner side of the end cap 211. The insulating element can be used to isolate the electrical connection components inside the housing 212 from the end cap 211 to reduce the risk of short circuit. For example, the insulating element may be made of plastic, rubber, etc.

[0125] The housing 212 is a component used to cooperate 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 in the figure), and other components. The housing 212 and the end cap 211 can be independent components. An opening can be provided on the housing 212, and the end cap 211 can be used to close 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 connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 212, the end cap 211 closes the housing 212. The housing 212 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 212 can be determined according to the specific shape and size of the electrode assembly 213. The housing 212 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0126] Electrode assembly 213 is the component in the battery cell 21 where the electrochemical reaction occurs. The casing 212 may contain one or more electrode assemblies 213. Electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of electrode assembly 213, while the portions of the positive and negative electrode sheets without active material each constitute a tab (not shown in the figure). The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 214 to form a current loop.

[0127] Combination Figure 2 , Figures 5 to 8 As shown, in some embodiments of this application, the battery device 10 includes at least one battery cell 21 and a relay 40, with the relay 40 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 and a magnet assembly 43. The coil assembly 42 includes a coil that generates a magnetic field when energized. The magnet assembly 43 includes a first conductive element 4311 and a second conductive element 4321, which are respectively disposed inside the same housing 41. The coil assembly 42 includes a first coil assembly 421 and a second coil assembly 422. The coil includes a first coil 4211 forming the first coil assembly 421, and the coil also includes a second coil (not shown) forming the second coil assembly 422. The first conductive element 4311 is configured to move away from the first coil 4211 under the influence of the magnetic field when the first coil 4211 is energized, and the second conductive element 4321 is configured to move away from the second coil under the influence of the magnetic field when the second coil is energized.

[0128] Specifically, there can be multiple battery cells 21, forming a battery cell assembly 20. At least one battery cell 21 is electrically connected to a relay 40, thereby increasing the output voltage or output current of the battery device 10. Optionally, the relay 40 can be located inside the housing 30 and directly connected to the battery cell 21 via a conductive element, such as a conductive tab. Alternatively, the relay 40 can be located inside the housing 30 and electrically connected to the battery cell 21 via a fuse.

[0129] The coil assembly 42 includes at least one coil, which has an axial direction, hereinafter referred to as the coil axis X. When energized, the coil generates a magnetic field along its own axis, thereby driving the first conductive element 4311 and the second conductive element 4321 to move along the coil axis X. In this application, the first conductive element 4311 and the second conductive element 4321 can move away from the coil under the influence of the coil's magnetic field.

[0130] A portion of the structure in the magnet assembly 43 is magnetic, and the direction of its magnetic field is opposite to the direction of the magnetic field generated when the coil is energized. The magnetic component is driven by the magnetic field of the coil, thereby moving away from the coil. Optionally, the first conductive element 4311 and the second conductive element 4321 are magnetic, and are thus directly driven by the magnetic force of the coil. Alternatively, at least one of the first conductive element 4311 and the second conductive element 4321 is non-magnetic, and the non-magnetic conductive element is connected to the magnetic element in the magnet assembly 43. The magnetic element is directly driven by the magnetic force of the coil, and drives the conductive element to move together. For ease of description, this application only describes the case where the first conductive element 4311 and the second conductive element 4321 are magnetic and can be directly driven by the magnetic force of the coil.

[0131] The first coil assembly 421 includes a first coil 4211, and the second coil assembly 422 includes a second coil. The first coil 4211 and the second coil have the same axial direction. A first conductive element 4311 is disposed corresponding to the first coil 4211 along the coil axial direction X, and the first conductive element 4311 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 element 4321 is disposed corresponding to the second coil along the coil axial direction X, and the second conductive element 4321 is configured to move away from the second coil under the influence of the magnetic field when the second coil is energized. Optionally, the first conductive element 4311 and the second conductive element 4321 are spaced apart along a first direction Y, and correspondingly, the first coil assembly 421 and the second coil assembly 422 are also spaced apart along the first direction Y.

[0132] According to the battery device 10 of this application, the circuit can be connected by the first conductive element 4311 and / or the second conductive element 4321, thereby realizing the function of multiple relays used in combination. Moreover, the first conductive element 4311 and the second conductive element 4321 are respectively disposed inside the same housing 41. Compared with the first conductive element 4311 and the second conductive element 4321 being disposed inside different housings 41, the number of housings 41 and the space occupied by the housings 41 can be reduced, thereby reducing the space occupancy rate of the relays 40, and thus reducing the volume of the battery device 10.

[0133] Combination Figures 5 to 8As shown, in some embodiments of this application, the relay body 403 further includes a plurality of stationary contacts, including a first stationary contact 441, a second stationary contact 442, a third stationary contact 443 and a fourth stationary contact 444. A first conductive element 4311 is configured to be electrically connected to the first stationary contact 441 and the second stationary contact 442 respectively, and a second conductive element 4321 is configured to be electrically connected to the third stationary contact 443 and the fourth stationary contact 444 respectively.

[0134] Specifically, the multiple stationary contacts include a first stationary contact 441, a second stationary contact 442, a third stationary contact 443, and a fourth stationary contact 444. A first conductive element 4311 can abut against and be electrically connected to both the first stationary contact 441 and the second stationary contact 442. In this case, one of the first stationary contact 441 and the second stationary contact 442 can be electrically connected to an external power source, such as a battery cell 21, and serve as a circuit input terminal; the other can be electrically connected to an external electrical device and serve as a circuit output terminal, thereby completing the circuit switching through the first stationary contact 441, the first conductive element 4311, and the second stationary contact 442. A second conductive element 4321 can abut against and be electrically connected to both the third stationary contact 443 and the fourth stationary contact 444. At this time, one of the third stationary contact 443 and the fourth stationary contact 444 can be electrically connected to an external power source such as a battery cell 21 and serve as a circuit input terminal, while the other can be electrically connected to an external electrical device and serve as a circuit output terminal, thereby completing the circuit switching through the third stationary contact 443, the second conductive element 4321 and the fourth stationary contact 444.

[0135] By electrically connecting the first conductive element 4311 to the first stationary contact 441 and the second stationary contact 442 respectively, one of the first stationary contact 441 and the second stationary contact 442 can serve as a circuit input terminal, and the other can serve as a circuit output terminal, thereby forming a conductive circuit through the first conductive element 4311, the first stationary contact 441 and the second stationary contact 442. By electrically connecting the second conductive element 4321 to the third stationary contact 443 and the fourth stationary contact 444 respectively, one of the third stationary contact 443 and the fourth stationary contact 444 can serve as a circuit input terminal, and the other can serve as a circuit output terminal, thereby forming a conductive circuit through the second conductive element 4321, the third stationary contact 443 and the fourth stationary contact 444.

[0136] Combination Figures 5 to 8As shown, in some embodiments of this application, the first conductive element 4311 and the second conductive element 4321 respectively have a first position when the coil is not energized. The first conductive element 4311 and the second conductive element 4321 also have a second position away from the coil under the action of the magnetic field when the coil is energized. When the first conductive element 4311 is in the second position, the first conductive element 4311 is electrically connected to the first stationary contact 441 and the second stationary contact 442 respectively. When the second conductive element 4321 is in the second position, the second conductive element 4321 is electrically connected to the third stationary contact 443 and the fourth stationary contact 444 respectively.

[0137] Specifically, when the coil is not energized, i.e., when the magnet assembly 43 is not subjected to the magnetic force of the coil, the first conductive element 4311 and the second conductive element 4321 are respectively in the first position, and the first conductive element 4311 and the second conductive element 4321 in the first position are disconnected from the stationary contact, and the relay 40 cannot be used to connect the circuit. When the coil is energized, i.e., when the first conductive element 4311 and the second conductive element 4321 are subjected to the magnetic field of the coil, the first conductive element 4311 and the second conductive element 4321 move away from the coil to the second position under the influence of the magnetic field. When the first conductive element 4311 is in the second position, the first conductive element 4311 is electrically connected to the first stationary contact 441 and the second stationary contact 442, respectively. When the second conductive element 4321 is in the second position, the second conductive element 4321 is electrically connected to the third stationary contact 443 and the fourth stationary contact 444, respectively.

[0138] When the coil is energized, the first conductive element 4311 can be driven to the second position under the magnetic field of the coil, and is used to conductively connect the first stationary contact 441 and the second stationary contact 442, thereby forming a conductive circuit through the first conductive element 4311, the first stationary contact 441 and the second stationary contact 442. When the coil is energized, the second conductive element 4321 can be driven to the second position under the magnetic field of the coil, and is used to conductively connect the third stationary contact 443 and the fourth stationary contact 444, thereby forming a conductive circuit through the second conductive element 4321, the third stationary contact 443 and the fourth stationary contact 444.

[0139] Combination Figures 5 to 8 As shown, in some embodiments of this application, the first stationary contact 441 and the third stationary contact 443 are spaced apart along the first direction Y, and the second stationary contact 442 and the fourth stationary contact 444 are spaced apart along the first direction Y. The second stationary contact 442 and the fourth stationary contact 444 are respectively located on the same side of the first stationary contact 441 and the third stationary contact 443 along the second direction Z. The first direction Y, the second direction Z and the coil axis X are perpendicular to each other.

[0140] Specifically, to reduce short circuits between the first stationary contact 441 and the third stationary contact 443, the first stationary contact 441 and the third stationary contact 443 are spaced apart along the first direction Y. To reduce short circuits between the second stationary contact 442 and the fourth stationary contact 444, the second stationary contact 442 and the fourth stationary contact 444 are spaced apart along the first direction Y. Furthermore, the second stationary contact 442 and the fourth stationary contact 444 are respectively located on the same side of the first stationary contact 441 and the third stationary contact 443 along the second direction Z, thus forming a roughly square structure. Optionally, the coil axis X can be the height direction of the outer casing 41, the first direction Y can be one of the length and width directions of the outer casing 41, and the second direction Z can be the other of the length and width directions of the outer casing 41.

[0141] By arranging the first stationary contact 441, the second stationary contact 442, the third stationary contact 443, and the fourth stationary contact 444 in a roughly square structure as described above, the size of the relay 40 can be reduced in either the first direction Y or the second direction Z, thereby reducing the space occupancy rate of the relay 40.

[0142] Combination Figures 5 to 8 As shown, in some embodiments of this application, the first conductive element 4311 and the second conductive element 4321 are spaced apart along the first direction Y, and the first conductive element 4311 and the second conductive element 4321 extend along the second direction Z, respectively.

[0143] Specifically, the first conductive element 4311 and the second conductive element 4321 are spaced apart along the first direction Y, thereby reducing the possibility of short circuits caused by contact between the first conductive element 4311 and the second conductive element 4321. The first conductive element 4311 and the second conductive element 4321 can each be a strip-shaped element, extending along the second direction Z.

[0144] By arranging the first conductive element 4311 and the second conductive element 4321 at intervals along the first direction Y, the first conductive element 4311 is located on the side where the first stationary contact 441 and the second stationary contact 442 are located, and the second conductive element 4321 is located on the side where the third stationary contact 443 and the fourth stationary contact 444 are located. The first conductive element 4311 and the second conductive element 4321 extend along the second direction Z, respectively. Thus, the first conductive element 4311 can be electrically connected to the first stationary contact 441 and the second stationary contact 442, respectively, and the second conductive element 4321 can be electrically connected to the third stationary contact 443 and the fourth stationary contact 444, respectively.

[0145] Combination Figures 5 to 8As shown, in some embodiments of this application, the relay body 403 further includes a conductive connector 45, which is electrically connected to the second stationary contact 442 and the fourth stationary contact 444 in a detachable manner.

[0146] Specifically, the conductive connector 45 is detachably electrically connected to the second stationary contact 442 and the fourth stationary contact 444, respectively, and the connection method includes, but is not limited to, bolt connection, snap-fit, or adhesive bonding. Optionally, the conductive connector 45 can be a strip structure and extend along the first direction Y, thereby facilitating the electrical connection of the conductive connector 45 to the second stationary contact 442 and the fourth stationary contact 444, respectively.

[0147] When the conductive connector 45 is electrically connected to both the second stationary contact 442 and the fourth stationary contact 444, one of the first stationary contact 441 and the third stationary contact 443 can be used as the circuit input terminal, and the other of the first stationary contact 441 and the third stationary contact 443 and the conductive connector 45 can be used as the circuit output terminal. This allows the first conductive element 4311 and the second conductive element 4321 to be connected in series, enabling voltage division of the circuit. Alternatively, the conductive connector 45 can be used as the circuit input terminal, and the first stationary contact 441 and the third stationary contact 443 can be used as the circuit output terminals, allowing the first conductive element 4311 and the second conductive element 4321 to be connected in parallel, enabling current shunting of the circuit. This reduces the generation of arc when the relay 40 is disconnected, reduces wear or failure of the stationary contacts, and improves the operational reliability of the battery device 10.

[0148] Combination Figures 5 to 8 As shown, in some embodiments of this application, the conductive connector 45 is provided with a plurality of first connection holes 451 at intervals on the side opposite to the magnet assembly 43. The first connection holes 451 are used for electrical connection with external conductive components.

[0149] Specifically, multiple first connecting holes 451 are spaced apart along the first direction Y. Optionally, the first connecting holes 451 can be through holes or blind holes. Optionally, the first connecting holes 451 can be threaded holes or smooth holes. External fasteners can be inserted into the first connecting holes 451 to electrically connect the external conductive parts to the conductive connectors 45. Optionally, the number of first connecting holes 451 can be two.

[0150] By providing multiple first connection holes 451, the external conductive component can be selectively electrically connected to any one of the first connection holes 451, thereby facilitating the connection between the external conductive component and the conductive connector 45.

[0151] Combination Figures 5 to 8As shown, in some embodiments of this application, the second stationary contact 442 and the fourth stationary contact 444 are respectively disposed inside the housing 41. The housing 41 is provided with a mounting opening 4112. At least a portion of the conductive connector 45 is configured to extend through the mounting opening 4112 into the interior of the housing 41 and be electrically connected to the second stationary contact 442 and the fourth stationary contact 444.

[0152] Specifically, the housing 41 has an internal cavity, in which most of the structure of the relay body 403 is housed. For example, the coil assembly 42, magnet assembly 43, second stationary contact 442, and fourth stationary contact 444 are located inside the housing 41, thus protecting the coil assembly 42 and magnet assembly 43. Some conductive connectors 45 can extend into the housing 41 through the mounting port 4112 and are electrically connected to the second stationary contact 442 and the fourth stationary contact 444, respectively. Other conductive connectors 45 can extend out of the housing 41 through the mounting port 4112, facilitating electrical connection to external conductive components.

[0153] Optionally, the housing 41 includes a housing body 411 and a base plate 412. The housing body 411 encloses a receiving cavity with an opening at one end, and the base plate 412 is connected to the housing body 411 and is used to seal the opening. Optionally, the housing 41 may be made of insulating material, thereby giving the housing 41 good insulation properties, enabling electrical isolation between the internal components of the relay 40 and external components.

[0154] By placing at least a portion of the conductive connector 45 inside the housing 41 and electrically connecting it to the second stationary contact 442 and the fourth stationary contact 444 respectively, it is possible to reduce accidental contact between the conductive connector 45 and external conductive components and reduce the occurrence of short circuits. At the same time, a mounting port 4112 corresponding to the conductive connector 45 is provided, through which the conductive connector 45 can extend into the housing 41, thereby facilitating the disassembly or connection of the conductive connector 45 to the second stationary contact 442 and the fourth stationary contact 444 respectively.

[0155] Combination Figures 5 to 8 As shown, in some embodiments of this application, the relay 40 further includes a plurality of connecting pieces, including a first connecting piece 461, a second connecting piece 462 and a third connecting piece 463, wherein the first connecting piece 461 is electrically connected to the first stationary contact 441, the second connecting piece 462 is electrically connected to the third stationary contact 443, and the third connecting piece 463 is electrically connected to the conductive connector 45.

[0156] Specifically, the connecting pieces are conductive pieces. The first connecting piece 461 can be fixed to the side of the first stationary contact 441 opposite to the first conductive element 4311 by bolts, and is in contact with and conductively connected to the first stationary contact 441. The second connecting piece 462 can be fixed to the side of the third stationary contact 443 opposite to the second conductive element 4321 by bolts, and is in contact with and conductively connected to the third stationary contact 443. The third connecting piece 463 can be fixed to the side of the conductive connector 45 opposite to the first conductive element 4311 by bolts, and is in contact with and conductively connected to the conductive connector 45.

[0157] By setting multiple connecting pieces, the relay 40 can be electrically connected to the battery cell 21 through a number of connecting pieces, and the relay 40 can also be electrically connected to other electrical devices through another number of connecting pieces, thereby completing the power supply to other electrical devices.

[0158] Combination Figures 5 to 9 As shown, in some embodiments of this application, at least one connecting piece includes a first connecting portion 4631, a transition portion 4632, and a second connecting portion 4633 arranged sequentially, and the first connecting portion 4631 and the second connecting portion 4633 are respectively disposed on opposite sides of the plate surface of the transition portion 4632.

[0159] For ease of description, this application will only use the third connecting piece 463 as an example.

[0160] Specifically, the third connecting piece 463 has a roughly Z-shaped structure, including a first connecting portion 4631, a transition portion 4632, and a second connecting portion 4633 arranged sequentially. One of the first connecting portion 4631 and the second connecting portion 4633 is electrically connected to the conductive connector 45, and the other of the first connecting portion 4631 and the second connecting portion 4633 is electrically connected to other electrical components. Optionally, the structures of the first connecting piece 461, the second connecting piece 462, and the third connecting piece 463 may be the same or different.

[0161] Optionally, the first connecting portion 4631 and the second connecting portion 4633 are arranged symmetrically about the center of the transition portion 4632. The structures of the first connecting portion 4631 and the second connecting portion 4633 are identical.

[0162] By disposing the first connecting part 4631 and the second connecting part 4633 on opposite sides of the plate surface of the transition part 4632, the connecting piece can be electrically connected to the stationary contact through the first connecting part 4631 and the second connecting part 4633 on either side of the transition part, thereby facilitating the electrical connection between the connecting piece and the stationary contact.

[0163] Combination Figures 5 to 9 As shown in some embodiments of this application,

[0164] The first connecting part 4631 has a plurality of second connecting holes 4634 extending through its plate surface; and / or,

[0165] The second connecting part 4633 has multiple second connecting holes 4634 through its plate surface.

[0166] Specifically, the second connecting hole 4634 is a light hole. Optionally, the first connecting part 4631 and the second connecting part 4633 are respectively provided with two second connecting holes 4634. When the first connecting part 4631 is connected to the conductive connector 45, one of the two second connecting holes 4634 can be selectively set to correspond to one of the two first connecting holes 451, and the third connecting piece 463 is fixedly connected to the conductive connector 45 by fasteners passing through the corresponding second connecting hole 4634 and first connecting hole 451, and the second stationary contact 442 and the fourth stationary contact 444 are electrically connected through the conductive connector 45.

[0167] Optionally, the side of the first connecting portion 4631 is provided with at least one positioning protrusion 4635; and / or, the side of the second connecting portion 4633 is provided with at least one positioning protrusion 4635.

[0168] Specifically, the positioning protrusion 4635 is provided on the side of the first connecting part 4631 and the side of the second connecting part 4633, and can abut against other components, thereby positioning the first connecting part 4631 and the second connecting part 4633 and reducing the rotation and displacement of the third connecting piece 463.

[0169] By providing multiple second connection holes 4634, the first connection part 4631 can selectively connect to the stationary contact using any one of the second connection holes 4634, or the second connection part 4633 can selectively connect to the stationary contact using any one of the second connection holes 4634, thereby facilitating the electrical connection between the connecting piece and the stationary contact.

[0170] Combination Figures 5 to 8 As shown, in some embodiments of this application, a portion of the first stationary contact 441 extends into the interior of the housing 41 and is configured to be electrically connected to the first conductive element 4311, while another portion of the first stationary contact 441 is located outside the housing 41 and is configured to be electrically connected to an external conductive element; and / or, a portion of the third stationary contact 443 extends into the interior of the housing 41 and is configured to be electrically connected to the second conductive element 4321, while another portion of the third stationary contact 443 is located outside the housing 41 and is configured to be electrically connected to an external conductive element.

[0171] Specifically, a first stationary contact 441 is positioned above the first conductive element 4311 along the coil axis X. One end of the first stationary contact 441, facing the first conductive element 4311 along the coil axis X, extends into the interior of the housing 41 and can contact and electrically connect with the first conductive element 4311 in the second position. The other end of the first stationary contact 441, away from the first conductive element 4311, is located outside the housing 41 and is used for electrical connection to external conductive elements, such as the first connecting piece 461. A third stationary contact 443 is positioned above the second conductive element 4321 along the coil axis X. One end of the third stationary contact 443, facing the second conductive element 4321 along the coil axis X, extends into the interior of the housing 41 and can contact and electrically connect with the second conductive element 4321 in the second position. The other end of the third stationary contact 443, away from the second conductive element 4321, is located outside the housing 41 and is used for electrical connection to external conductive elements, such as the second connecting piece 462.

[0172] By extending a portion of the first stationary contact 441 into the interior of the housing 41, it facilitates electrical connection between the first stationary contact 441 and the first conductive element 4311. The other portion of the first stationary contact 441 is located on the exterior of the housing 41, facilitating electrical connection between the first stationary contact 441 and an external conductive element. Similarly, by extending a portion of the third stationary contact 443 into the interior of the housing 41, it facilitates electrical connection between the third stationary contact 443 and the second conductive element 4321. The other portion of the third stationary contact 443 is located on the exterior of the housing 41, facilitating electrical connection between the third stationary contact 443 and an external conductive element.

[0173] Combination Figures 5 to 8 As shown, in some embodiments of this application, the outer surface of the housing 41 is provided with protruding ribs 4111, and at least two stationary contacts are provided with partial protruding ribs 4111.

[0174] 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 stationary contacts. Optionally, the rib 4111 has a roughly T-shaped structure, with a portion of the rib 4111 extending along the first direction Y and positioned along the second direction Z on the side of the conductive connector 45 facing the first stationary contact 441 and the third stationary contact 443. Another portion of the rib 4111 extends along the second direction Z and is positioned along the first direction Y between the first stationary contact 441 and the third stationary contact 443, thereby separating the first stationary contact 441, the third stationary contact 443, and the conductive connector 45 through the rib 4111, and further separating the first connecting piece 461, the second connecting piece 462, and the third connecting piece 463, reducing the possibility of short circuits between the first connecting piece 461, the second connecting piece 462, and the third connecting piece 463.

[0175] By providing a raised rib 4111 between at least two stationary contacts, when an external conductive element is connected to the stationary contacts, the short circuit phenomenon between the stationary contacts on both sides of the raised rib 4111 through the external conductive element can be reduced.

[0176] Combination Figures 5 to 8 As shown, in some embodiments of this application, the first conductive element 4311 and / or the second conductive element 4321 include an armature that is conductive.

[0177] Specifically, the armature is magnetic and conductive. Optionally, the first conductive element 4311 and the second conductive element 4321 each include a conductive armature. When the coil is energized, the magnetic field generated by the coil can directly act on the first conductive element 4311 and the second conductive element 4321, driving them to move together. In some other embodiments of this application, a support member connected to the first conductive element 4311 and the second conductive element 4321 can also be provided, wherein the first conductive element 4311 and the second conductive element 4321 are metal conductive elements, the support member is the armature, and an insulating element is provided between the first conductive element 4311 and the second conductive element 4321 and the support member to reduce the occurrence of short circuits. The support member can move away from the coil under the influence of the magnetic field when the coil is energized, and position the first conductive element 4311 and the second conductive element 4321 in a second position. In some other embodiments of this application, one of the first conductive element 4311 and the second conductive element 4321 may be configured as a conductive armature, and the other may be configured as a metal conductive element. The metal conductive element may be connected to a magnetic support element, and the support element may drive the metal conductive element to move under the action of the coil magnetic field.

[0178] The armature is magnetic and can be driven by the magnetic field generated by the energized coil. At the same time, the armature is also conductive, so that the circuit can be connected through the first conductive element and / or the second conductive element.

[0179] Combination Figures 5 to 8 As shown, in some embodiments of this application, the magnet assembly 43 includes a first magnet assembly 431 and a second magnet assembly 432. The first magnet assembly 431 is provided with a first conductive element 4311, and the second magnet assembly 432 is provided with a second conductive element 4321.

[0180] Specifically, the first magnet assembly 431 includes a first conductive element 4311, which is disposed corresponding to the first coil 4211 along the coil axis X. The first conductive element 4311 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 magnet assembly 432 includes a second conductive element 4321, which is disposed corresponding to the second coil along the coil axis X. The second conductive element 4321 is configured to move away from the second coil under the influence of the magnetic field when the second coil is energized. Optionally, the first conductive element 4311 and the second conductive element 4321 are spaced apart along a first direction Y. Correspondingly, the first coil assembly 421 and the second coil assembly 422 are also spaced apart along the first direction Y.

[0181] When energized, the first coil 4211 of the first coil assembly 421 drives the first conductive element 4311 to move and is electrically connected to the first stationary contact 441 and the second stationary contact 442, thereby connecting the circuit through the first conductive element 4311. When energized, the second coil of the second coil assembly 422 drives the second conductive element 4321 to move and is electrically connected to the third stationary contact 443 and the fourth stationary contact 444, thereby connecting the circuit through the second conductive element 4321. Thus, the first conductive element 4311 and the second conductive element 4321 can be used to connect the circuit respectively.

[0182] Combination Figures 5 to 8 As shown, in some embodiments of this application, along the axial direction of the first coil 4211, the projection of the first conductive element 4311 at least partially overlaps with the projection of the first coil 4211; and / or, along the axial direction of the second coil, the projection of the second conductive element 4321 at least partially overlaps with the projection of the second coil.

[0183] Specifically, along the coil axis X, the first conductive element 4311 and the first coil 4211 are arranged opposite to each other, and their projections at least partially overlap. Along the coil axis X, the second conductive element 4321 and the second coil are arranged opposite to each other, and their projections at least partially overlap.

[0184] By at least partially overlapping the projection of the first conductive element 4311 with the projection of the first coil 4211, the magnetic force generated by the first coil 4211 on the first conductive element 4311 when energized can be increased, thereby driving the first conductive element 4311 to move to the second position. Similarly, by at least partially overlapping the projection of the second conductive element 4321 with the projection of the second coil, the magnetic force generated by the second coil on the second conductive element 4321 when energized can be increased, thereby driving the second conductive element 4321 to move to the second position.

[0185] Combination Figures 5 to 8As shown, in some embodiments of this application, the first coil assembly 421 further includes a first housing 4212, which is disposed inside the outer shell 41, and the first coil 4211 is disposed inside the first housing 4212; and / or, the second coil assembly 422 further includes a second housing 4221, which is disposed inside the outer shell 41, and the second coil is disposed inside the second housing 4221.

[0186] Specifically, the first housing 4212 has an internal mounting cavity, and the first coil 4211 is fixed within the mounting cavity of the first housing 4212. Optionally, the first coil assembly 421 further includes a first iron core (not shown in the figure), which is fixed inside the first housing 4212, and the first coil 4211 is wound around the outer circumferential surface of the first iron core. Optionally, the first housing 4212 can be an insulating component, thereby reducing the possibility of short circuits between the first housing 4212 and the energized first coil 4211.

[0187] The second housing 4221 has an internal mounting cavity, and the second coil is fixed within the mounting cavity of the second housing 4221. Optionally, the second coil assembly 422 further includes a second iron core (not shown in the figure), which is fixed inside the second housing 4221, and the second coil is wound around the outer circumferential surface of the second iron core. Optionally, the second housing 4221 can be an insulating component, thereby reducing the possibility of short circuits between the second housing 4221 and the energized second coil.

[0188] By placing the first housing 4212 inside the outer casing 41 and the first coil 4211 inside the first housing 4212, during assembly, the first coil 4211 can be placed inside the first housing 4212 first, and then the first housing 4212 can be assembled into the outer casing 41, thus facilitating the modular assembly of the relay 40. Similarly, by placing the second housing 4221 inside the outer casing 41 and the second coil inside the second housing 4221, during assembly, the second coil can be placed inside the second housing 4221 first, and then the second housing 4221 can be assembled into the outer casing 41, thus facilitating the modular assembly of the relay 40.

[0189] Combination Figures 5 to 8 As shown, in some embodiments of this application, the relay 40 further includes a first coil terminal 4113 penetrating the housing 41 and a first wire (not shown in the figure) passing through the first coil terminal 4113, the first coil 4211 being electrically connected to the battery cell 21 through the first wire; and / or, the relay 40 further includes a second coil terminal 4114 penetrating the housing 41 and a second wire (not shown in the figure) passing through the second coil terminal 4114, the second coil being electrically connected to the battery cell 21 through the second wire.

[0190] Specifically, a first coil connection port 4113 is provided through the outer casing 41. A first wire can pass through the first coil connection port 4113, and the two ends of the first wire are electrically connected to the battery cell 21 and the first coil 4211, respectively, thereby supplying power to the first coil 4211 and causing the energized first coil 4211 to generate a magnetic force acting on the first conductive element 4311, thus driving the first conductive element 4311 to move. A second coil connection port 4114 is also provided through the outer casing 41. A second wire can pass through the second coil connection port 4114, and the two ends of the second wire are electrically connected to the battery cell 21 and the second coil, respectively, thereby supplying power to the second coil and causing the energized second coil to generate a magnetic force acting on the second conductive element 4321, thus driving the second conductive element 4321 to move.

[0191] Optionally, the relay body 403 also includes an electronic control board 47, with the first wire and the second wire electrically connected to the electronic control board. Optionally, the electronic control board 47 may be disposed on the same side of the first coil assembly 421 and the second coil assembly 422 along the second direction Z, and electrically connected to the first coil 4211 and the second coil, respectively, for controlling the input current to the first coil 4211 and the second coil, thereby driving the first conductive element 4311 and the second conductive element 4321 to move through the magnetic field generated by the first coil 4211 and the second coil, thereby controlling the relay 40 to connect or disconnect the circuit.

[0192] The first coil 4211 is electrically connected to the battery cell 21 via a first wire, thereby supplying power to the first coil 4211 through the battery cell 21 and causing the first coil 4211 to generate a magnetic field force acting on the first conductive element 4311 when energized. The second coil is electrically connected to the battery cell 21 via a second wire, thereby supplying power to the second coil through the battery cell 21 and causing the second coil to generate a magnetic field force acting on the second conductive element 4321 when energized.

[0193] Combination Figures 5 to 8 As shown, in some embodiments of this application, the first magnet assembly 431 further includes a first ceramic housing 4312, which is disposed inside the outer shell 41, and a first conductive element 4311 is disposed inside the first ceramic housing 4312; and / or, the second magnet assembly 432 further includes a second ceramic housing 4322, which is disposed inside the outer shell 41, and a second conductive element 4321 is disposed inside the second ceramic housing 4322.

[0194] Specifically, the ceramic housing has insulating properties, which can effectively reduce the arcing that occurs when the static contact breaks down, thus reducing the risk of the housing being damaged.

[0195] Optionally, the interior of the first ceramic housing 4312 forms a mounting cavity for mounting the first conductive element 4311, and the first conductive element 4311 can move along the coil axis X within the mounting cavity. Optionally, the first ceramic housing 4312 includes a first body portion 4316 and a first sealing plate 4317, the first body portion 4316 surrounding the mounting cavity. The first sealing plate 4317 is connected to the first body portion 4316 and is used to seal the opening of the first body portion 4316. Optionally, the first sealing plate 4317 is a ceramic sealing plate. Optionally, the first magnet assembly 431 further includes a first spring 4315, the first spring 4315 being connected to the side of the first conductive element 4311 away from the stationary contact and used to support the movement of the first conductive element 4311. Optionally, the first body portion 4316 has an opening communicating with the mounting cavity at one end facing the first coil assembly 421, and a through hole is provided through the first sealing plate 4317. The end of the first spring 4315 facing away from the first conductive member 4311 can pass through the through hole on the first sealing plate 4317 and be inserted into the interior of the first coil assembly 421, and abut or connect with the internal structure of the first coil assembly 421, thereby improving the smoothness of the first conductive member 4311 moving along the coil axis X.

[0196] Optionally, the interior of the second ceramic housing 4322 forms a mounting cavity for mounting the second conductive element 4321, and the second conductive element 4321 can move along the coil axis X within the mounting cavity. Optionally, the second ceramic housing 4322 includes a second body portion 4326 and a second sealing plate 4327, the second body portion 4326 surrounding the mounting cavity. The second sealing plate 4327 is connected to the second body portion 4326 and is used to seal the opening of the second body portion 4326. Optionally, the second sealing plate 4327 is a ceramic sealing plate. Optionally, the second magnet assembly 432 further includes a second spring 4325, the second spring 4325 being connected to the side of the second conductive element 4321 opposite to the stationary contact and used to support the movement of the second conductive element 4321. Optionally, the second body part 4326 has an opening communicating with the mounting cavity at one end facing the second coil assembly 422, and a through hole is provided through the second sealing plate 4327. The end of the second spring 4325 away from the second conductive member 4321 can pass through the through hole on the second sealing plate 4327 and be inserted into the interior of the second coil assembly 422, and abut or connect with the internal structure of the second coil assembly 422, thereby improving the smoothness of the movement of the second conductive member 4321 along the coil axis X.

[0197] By placing the first conductive element 4311 inside the first ceramic housing 4312, the electric arc generated when the first conductive element 4311 is disconnected from the stationary contact can be effectively isolated, reducing the risk of the electric arc breaking down the first ceramic housing 4312 and damaging other components inside the relay 40. At the same time, the integration of the first magnet assembly 431 is improved. During assembly, the first conductive element 4311 can be placed inside the first ceramic housing 4312 first, and then the first ceramic housing 4312 can be assembled into the inside of the outer shell 41, thereby facilitating the modular assembly of the relay 40. By placing the second conductive element 4321 inside the second ceramic housing 4322, the arc generated when the second conductive element 4321 is disconnected from the stationary contact can be effectively isolated, reducing the risk of the arc breaking through the second ceramic housing 4322 and damaging other components inside the relay 40. At the same time, the integration of the second magnet assembly 432 is improved. During assembly, the second conductive element 4321 can be placed inside the second ceramic housing 4322 first, and then the second ceramic housing 4322 can be assembled into the inside of the outer shell 41, thereby facilitating the modular assembly of the relay 40.

[0198] Combination Figures 5 to 8 As shown, in some embodiments of this application, the first magnet assembly 431 further includes at least one first magnet 4313, which is disposed outside the first ceramic housing 4312, and the magnetic field direction of the first magnet 4313 is perpendicular to the axis of the first coil 4211.

[0199] Specifically, the first magnet 4313 is disposed on the outside of the first ceramic housing 4312 in a direction perpendicular to the coil axis X, and the magnetic field direction of the first magnet 4313 is perpendicular to the magnetic field direction of the first coil 4211. Optionally, the first magnet 4313 can be directly attached to the outside of the first ceramic housing 4312, such as by bonding; or, the first magnet 4313 can be disposed on the first support plate 4314, and the first support plate 4314 can be disposed on the outside of the first ceramic housing 4312, such as by connecting the first support plate 4314 to the outer shell body 411. Optionally, there can be multiple first support plates 4314, which are spaced apart and arranged in a ring around the outside of the first ceramic housing 4312, and each first support plate 4314 is provided with multiple first magnets 4313.

[0200] By placing the first magnet 4313 outside the first ceramic housing 4312, when the first conductive element 4311 breaks with the stationary contact and generates an electric arc, the first magnet 4313 can generate a magnetic field in the direction perpendicular to the coil axis X. The electric arc current interacts with the magnetic field to generate a force that pushes the electric arc to move outward and cools it out, thereby achieving the purpose of magnetic blowout arc extinguishing.

[0201] Combination Figures 5 to 8As shown, in some embodiments of this application, the second magnet assembly 432 further includes at least one second magnet 4323, which is disposed outside the second ceramic housing 4322, and the magnetic field direction of the second magnet 4323 is perpendicular to the axis of the second coil.

[0202] Specifically, the second magnet 4323 is disposed on the outside of the second ceramic housing 4322 in a direction perpendicular to the coil axis X, and the magnetic field direction of the second magnet 4323 is perpendicular to the magnetic field direction of the second coil. Optionally, the second magnet 4323 can be directly attached to the outside of the second ceramic housing 4322, such as by bonding; or, the second magnet 4323 can be disposed on the second support plate 4324, and the second support plate 4324 can be disposed on the outside of the second ceramic housing 4322, such as by connecting the second support plate 4324 to the outer shell body 411. Optionally, there can be multiple second support plates 4324, which are spaced apart and arranged in a ring around the outside of the second ceramic housing 4322, and each second support plate 4324 is provided with multiple second magnets 4323.

[0203] By placing the second magnet 4323 outside the second ceramic housing 4322, when the second conductive element 4321 breaks with the stationary contact and generates an electric arc, the second magnet 4323 can generate a magnetic field in the direction perpendicular to the coil axis X. The electric arc current interacts with the magnetic field to generate a force that pushes the electric arc to move outward and cools it out, thereby achieving the purpose of magnetic blowout arc extinguishing.

[0204] Combination Figures 5 to 12 As shown, in some embodiments of this application, the relay 40 includes a plurality of relay bodies 403, and the coil assembly 42 and magnet assembly 43 of the plurality of relay bodies 403 are respectively disposed inside the same housing 41.

[0205] Specifically, the number of relay bodies 403 can be two or more. For ease of description, we will only take two relay bodies 403 arranged side by side and opposite each other inside the same housing 41 as an example.

[0206] The arrangement of either of the two relay bodies 403 can be the same as the arrangement of the relay body 403 and the housing 41 in any of the above embodiments.

[0207] By housing multiple relay bodies 403 together inside the same housing 41, the extra space occupied by each relay body 403 in its own housing 41 can be reduced, thereby reducing the space occupancy rate of the relay 40 and improving the integration of the relay 40, which facilitates overall assembly.

[0208] Combination Figures 5 to 12As shown, in some embodiments of this application, the first conductive element 4311 and the second conductive element 4321 are spaced apart along the first direction Y, and the first conductive element 4311 and the second conductive element 4321 extend along the second direction Z respectively. 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 X are perpendicular to each other.

[0209] Specifically, the two relay bodies 403 are arranged opposite each other along the second direction Z, that is, the conductive connector 45 of one relay body 403 is located on the side away from the other relay body 403 along the second direction Z, and the first stationary contact 441 of one relay body 403 and the third stationary contact 443 of the other relay body 403 are arranged opposite each other along the second direction Z. Optionally, each of the two relay bodies 403 may be provided with an electronic control board 47, and the two electronic control boards 47 are arranged between the two relay bodies 403 along the second direction Z; or, the two relay bodies 403 are electrically connected to a common electronic control board 47, and the electronic control board 47 is arranged between the two relay bodies 403 along the second direction Z.

[0210] By arranging multiple relay bodies 403 side by side along the second direction Z, the space occupied by multiple relay bodies 403 along the first direction Y can be reduced, and the space occupancy rate of relay 40 along the second direction Z can be increased.

[0211] Combination Figures 5 to 8 as well as Figure 13 As shown, the battery device 10 includes a plurality of relays 40. The plurality of relays 40 includes at least a first relay 401 and a second relay 402 that are sequentially connected to the battery cell 21. The second stationary contact 442 and the fourth stationary contact 444 of the first relay 401 are electrically connected to the battery cell 21 through the conductive connector 45 of the first relay 401. The first stationary contact 441 of the first relay 401 is electrically connected to the third stationary contact 443 of the second relay 402. The third stationary contact 443 of the first relay 401 is electrically connected to the first stationary contact 441 of the second relay 402. The second stationary contact 442 and the fourth stationary contact 444 of the second relay 402 are electrically connected to the conductive connector 45 of the second relay 402.

[0212] 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 other relays connected in series or 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.

[0213] By connecting the battery cell 21, the first relay 401, and the second relay 402 in sequence, the electrical energy output by the battery cell 21 is first shunted by the first relay 401, thereby reducing the arc generated when the first relay 401 is disconnected. The shunted electrical energy is then combined by the second relay 402, thereby achieving electrical energy that can meet the load power and thus meet the load's power demand.

[0214] Combination Figure 1 , Figure 2 , Figures 5 to 13 As shown, in a second aspect, this application proposes an electrical device that includes the battery device 10 of any of the above embodiments.

[0215] Since the electrical device in this application has the same technical features as the battery device 10 in any of the above embodiments and can achieve the same technical effect, it will not be described again here.

[0216] like Figure 1 As shown, in some embodiments of this application, the electrical device can 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.

[0217] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0218] Combination Figure 2 , Figures 5 to 12As shown, in some embodiments of this application, the battery device 10 includes at least one battery cell 21 and a relay 40. 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 structure of the relay body 403 is disposed inside the housing 41. The relay body 403 includes a coil assembly 42 and a magnet assembly 43. The coil assembly 42 includes a coil that can generate a magnetic field when energized. The magnet assembly 43 includes a first conductive element 4311 and a second conductive element 4321. The first conductive element 4311 and the second conductive element 4321 are respectively disposed inside the same housing 41. The coil assembly 42 includes a first coil assembly 421 and a second coil assembly 422. The coil includes a first coil 4211 forming the first coil assembly 421, and the coil also includes a second coil (not shown) forming the second coil assembly 422. The first conductive element 4311 is configured to move away from the first coil 4211 under the influence of the magnetic field when the first coil 4211 is energized, and the second conductive element 4321 is configured to move away from the second coil under the influence of the magnetic field when the second coil is energized.

[0219] Optionally, the relay body 403 further includes multiple stationary contacts, including a first stationary contact 441, a second stationary contact 442, a third stationary contact 443, and a fourth stationary contact 444. The first conductive element 4311 and the second conductive element 4321 each have a first position when the coil is not energized. The first conductive element 4311 and the second conductive element 4321 also each have a second position away from the coil under the influence of the magnetic field when the coil is energized. When the first conductive element 4311 is in the second position, it is electrically connected to the first stationary contact 441 and the second stationary contact 442. When the second conductive element 4321 is in the second position, it is electrically connected to the third stationary contact 443 and the fourth stationary contact 444. The first stationary contact 441 and the third stationary contact 443 are spaced apart along the first direction Y, and the second stationary contact 442 and the fourth stationary contact 444 are spaced apart along the first direction Y. The second stationary contact 442 and the fourth stationary contact 444 are respectively located on the same side of the first stationary contact 441 and the third stationary contact 443 along the second direction Z. The first direction Y, the second direction Z and the coil axis X are perpendicular to each other.

[0220] Optionally, the first conductive element 4311 and the second conductive element 4321 are spaced apart along the first direction Y, and the first conductive element 4311 and the second conductive element 4321 extend along the second direction Z, respectively.

[0221] Optionally, the relay body 403 further includes a conductive connector 45, which is detachably electrically connected to the second stationary contact 442 and the fourth stationary contact 444, respectively. The conductive connector 45 has a plurality of first connection holes 451 spaced apart on the side facing away from the magnet assembly 43, which are used for electrical connection with external conductive components.

[0222] Optionally, the second stationary contact 442 and the fourth stationary contact 444 are respectively located inside the housing 41. The housing 41 has a through-hole 4112. At least a portion of the conductive connector 45 is configured to extend through the through-hole 4112 into the housing 41 and be electrically connected to the second stationary contact 442 and the fourth stationary contact 444. A portion of the first stationary contact 441 extends into the housing 41 and is configured to be electrically connected to the first conductive member 4311. Another portion of the first stationary 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 stationary contact 443 extends into the housing 41 and is configured to be electrically connected to the second conductive member 4321. Another portion of the third stationary contact 443 is located outside the housing 41 and is configured to be electrically connected to an external conductive member.

[0223] Optionally, the relay 40 also includes multiple connecting pieces, including a first connecting piece 461, a second connecting piece 462, and a third connecting piece 463. The first connecting piece 461 is electrically connected to the first stationary contact 441, the second connecting piece 462 is electrically connected to the third stationary contact 443, and the third connecting piece 463 is electrically connected to the conductive connector 45.

[0224] Optionally, at least one connecting piece includes a first connecting portion 4631, a transition portion 4632, and a second connecting portion 4633 arranged sequentially, with the first connecting portion 4631 and the second connecting portion 4633 respectively located on opposite sides of the plate surface of the transition portion 4632. The plate surface of the first connecting portion 4631 is provided with a plurality of second connecting holes 4634, and the plate surface of the second connecting portion 4633 is also provided with a plurality of second connecting holes 4634.

[0225] Optionally, the outer surface of the housing 41 is provided with protruding ribs 4111, and at least two stationary contacts are provided with partial protruding ribs 4111.

[0226] Optionally, the magnet assembly 43 includes a first magnet assembly 431 and a second magnet assembly 432. The first magnet assembly 431 is provided with a first conductive element 4311, and the second magnet assembly 432 is provided with a second conductive element 4321. The first conductive element 4311 and the second conductive element 4321 each include a conductive armature.

[0227] Optionally, along the axial direction of the first coil 4211, the projection of the first conductive element 4311 at least partially overlaps with the projection of the first coil 4211. Along the axial direction of the second coil, the projection of the second conductive element 4321 at least partially overlaps with the projection of the second coil.

[0228] Optionally, the first coil assembly 421 further includes a first housing 4212, which is disposed inside the outer casing 41, and the first coil 4211 is disposed inside the first housing 4212. The second coil assembly 422 further includes a second housing 4221, which is disposed inside the outer casing 41, and the second coil is disposed inside the second housing 4221.

[0229] Optionally, the relay 40 further includes a first coil terminal 4113 penetrating the housing 41 and a first wire passing through the first coil terminal 4113, wherein the first coil 4211 is electrically connected to the battery cell 21 via the first wire. The relay 40 also includes a second coil terminal 4114 penetrating the housing 41 and a second wire passing through the second coil terminal 4114, wherein the second coil is electrically connected to the battery cell 21 via the second wire.

[0230] Optionally, the first magnet assembly 431 further includes a first ceramic housing 4312, which is disposed inside the outer casing 41, and a first conductive element 4311 is disposed inside the first ceramic housing 4312. The second magnet assembly 432 further includes a second ceramic housing 4322, which is disposed inside the outer casing 41, and a second conductive element 4321 is disposed inside the second ceramic housing 4322. 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 disposed inside the same outer casing 41. The first conductive element 4311 and the second conductive element 4321 of any relay body 403 are respectively spaced apart along a first direction Y, and the first conductive element 4311 and the second conductive element 4321 of any relay body 403 extend along a second direction Z, and the plurality of relay bodies 403 are arranged side by side along the second direction Z.

[0231] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery device, characterized in that, include: At least one battery cell; The relay is electrically connected to the battery cell; The relay includes a housing and a relay body, with at least a portion of the relay body disposed inside the housing. The relay body includes: A coil assembly, the coil assembly comprising a coil that generates a magnetic field when energized; A magnet assembly, the magnet assembly including a first conductive element and a second conductive element, the first conductive element and the second conductive element being respectively disposed inside the same housing; The coil assembly includes a first coil assembly and a second coil assembly. The coil includes a first coil forming the first coil assembly and a second coil forming the second coil assembly. The first conductive element is configured to move away from the first coil under the influence of a magnetic field when the first coil is energized. The second conductive element is configured to move away from the second coil under the influence of a magnetic field when the second coil is energized. The relay body also includes a plurality of stationary contacts, including a first stationary contact, a second stationary contact, a third stationary contact, and a fourth stationary contact that are independently arranged. The first conductive element is configured to be electrically connected to the first stationary contact and the second stationary contact, respectively. The second conductive element is configured to be electrically connected to the third stationary contact and the fourth stationary contact, respectively.

2. The battery device according to claim 1, characterized in that, The first conductive element and the second conductive element each have a first position when the coil is not energized. The first conductive element and the second conductive element also each have a second position away from the coil under the influence of the magnetic field when the coil is energized. When the first conductive element is in the second position, the first conductive element is electrically connected to the first stationary contact and the second stationary contact respectively. When the second conductive element is in the second position, the second conductive element is electrically connected to the third stationary contact and the fourth stationary contact respectively.

3. The battery device according to claim 1, characterized in that, The first stationary contact and the third stationary contact are spaced apart along a first direction, and the second stationary contact and the fourth stationary contact are spaced apart along the first direction. The second stationary contact and the fourth stationary contact are respectively located on the same side of the first stationary contact and the third stationary contact along a second direction. The first direction, the second direction and the axis of the coil are perpendicular to each other.

4. The battery device according to claim 3, characterized in that, The first conductive element and the second conductive element are spaced apart along the first direction, and the first conductive element and the second conductive element extend along the second direction respectively.

5. The battery device according to claim 1, characterized in that, The relay body also includes a conductive connector, which is detachably electrically connected to the second stationary contact and the fourth stationary contact respectively.

6. The battery device according to claim 5, characterized in that, The conductive connector has a plurality of first connection holes spaced apart on the side opposite to the magnet assembly. The first connection holes are used for electrical connection with external conductive components.

7. The battery device according to claim 6, characterized in that, The second stationary contact and the fourth stationary contact are respectively located inside the housing. The housing has a through-hole for mounting. At least a portion of the conductive connector is configured to extend through the mounting hole into the housing and be electrically connected to the second stationary contact and the fourth stationary contact.

8. The battery device according to claim 5, characterized in that, The relay further includes multiple connecting pieces, including a first connecting piece, a second connecting piece, and a third connecting piece, wherein the first connecting piece is electrically connected to the first stationary contact, the second connecting piece is electrically connected to the third stationary contact, and the third connecting piece is electrically connected to the conductive connector.

9. The battery device according to claim 8, characterized in that, At least one of the connecting pieces includes a first connecting portion, a transition portion, and a second connecting portion arranged sequentially, with the first connecting portion and the second connecting portion respectively located on opposite sides of the plate surface of the transition portion.

10. The battery device according to claim 9, characterized in that, The first connecting part has a plurality of second connecting holes extending through its plate surface; and / or, The second connecting part has multiple second connecting holes through its plate surface.

11. The battery device according to claim 1, characterized in that, A portion of the first stationary contact extends into the interior of the housing and is configured to be electrically connected to the first conductive element; another portion of the first stationary contact is located on the exterior of the housing and is configured to be electrically connected to an external conductive element. And / or, A portion of the third stationary contact extends into the interior of the housing and is configured to be electrically connected to the second conductive element, while another portion of the third stationary contact is located on the exterior of the housing and is configured to be electrically connected to an external conductive element.

12. The battery device according to claim 1, characterized in that, The outer surface of the housing is provided with raised ribs, and at least two of the raised ribs are provided between the two stationary contacts.

13. The battery device according to any one of claims 1 to 12, characterized in that, The first conductive element and / or the second conductive element includes an armature that is conductive.

14. The battery device according to any one of claims 1 to 12, characterized in that, The magnet assembly includes a first magnet assembly and a second magnet assembly, wherein the first magnet assembly is provided with the first conductive element and the second magnet assembly is provided with the second conductive element.

15. The battery device according to any one of claims 1 to 12, characterized in that, Along the axial direction of the first coil, the projection of the first conductive element at least partially overlaps with the projection of the first coil; and / or, Along the axial direction of the second coil, the projection of the second conductive element at least partially overlaps with the projection of the second coil.

16. The battery device according to any one of claims 1 to 12, characterized in that, The first coil assembly further includes a first housing disposed inside the outer casing, and the first coil disposed inside the first housing; and / or, The second coil assembly further includes a second housing, which is disposed inside the outer casing, and the second coil is disposed inside the second housing.

17. The battery device according to any one of claims 1 to 12, characterized in that, The relay further includes a first coil terminal penetrating the housing and a first wire passing through the first coil terminal, the first coil being electrically connected to the battery cell via the first wire; and / or, The relay also includes a second coil terminal that passes through the housing and a second wire that passes through the second coil terminal. The second coil is electrically connected to the battery cell through the second wire.

18. The battery device according to claim 14, characterized in that, The first magnet assembly further includes a first ceramic housing, which is disposed inside the outer shell, and the first conductive element is disposed inside the first ceramic housing; And / or, the second magnet assembly further includes a second ceramic housing disposed inside the outer casing, and the second conductive element disposed inside the second ceramic housing.

19. The battery device according to any one of claims 1 to 12, characterized in that, The relay includes multiple relay bodies, and the coil assemblies and magnet assemblies of the multiple relay bodies are respectively disposed inside the same housing.

20. The battery device according to claim 19, characterized in that, The first conductive element and the second conductive element of any one of the relay bodies are spaced apart along a first direction, and the first conductive element and the second conductive element of any one of the relay bodies extend along a second direction respectively. A plurality of relay bodies are arranged side by side along the second direction, wherein the first direction, the second direction and the axis of the coil are perpendicular to each other.

21. An electrical appliance, characterized in that, The electrical equipment includes the battery device according to any one of claims 1 to 20.

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