Battery device and electric device

Abstract

The utility model belongs to the technical field of batteries, and provides a battery device and a power utilization device.The battery device comprises a box body, a battery monomer, a first fan and a second fan; the battery monomers are arranged in the box body; the first fan is arranged in the box body; the second fan is arranged outside the box body so that external airflow can drive the second fan to rotate, and the second fan is in driving connection with the first fan so that the second fan can drive the first fan to rotate under the rotating condition. The utility model aims to reduce the temperature of some electrical parts with higher temperature in the discharging process of the vehicle battery device in the running process of a vehicle and improve the energy output efficiency.

Description

TECHNICAL FIELD

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

[0002] With the rise of new energy equipment represented by new energy vehicles, a battery device has become a key power source. The battery device comprises a box body, a battery monomer and electrical components arranged in the box body. The battery monomer is a charging and discharging energy storage device. In the charging and discharging process, the temperature of the battery monomer will rise. In order to keep the battery monomer in a suitable temperature range, a water cooling plate is usually arranged. The water cooling plate is arranged on the surface of the battery monomer in a manner of adhesion to cool the battery monomer.

[0003] However, the battery device also comprises some other devices that generate more heat. In particular, when the battery device is installed on a vehicle and the battery device is used as the driving power source of the vehicle, the output current of the battery device is large during the driving of the vehicle. The devices connected in the high-voltage circuit, in particular, the high-voltage connector, the copper bar adapter plate and the like, have a significant temperature rise with the increase of the output current. After the temperature rises, the resistance value increases significantly, which affects the energy output efficiency of the battery device. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the application provides a battery device and a power utilization device, which aims to reduce the temperature of some electrical components with high temperature in the discharging process of the vehicle battery device during the driving of the vehicle and improve the energy output efficiency.

[0005] To solve the above problems, in a first aspect, the application provides a battery device, comprising:

[0006] a box body;

[0007] a battery monomer arranged in the box body;

[0008] a first fan arranged in the interior of the box body;

[0009] a second fan arranged outside the box body, so that the external airflow drives the second fan to rotate, and the second fan is drivingly connected with the first fan, so that the second fan can drive the first fan to rotate under the condition of rotation.

[0010] The effect of the embodiment is that the battery device can be installed on a vehicle as a driving power source of the vehicle. When the vehicle is driving, the external second fan rotates under the driving of the airflow, so that the internal first fan rotates, and the gas flow in the box body is strengthened. In this way, the temperature of some high-temperature heating devices in the battery device is reduced to a certain extent, the energy output efficiency is improved, and the rotation is realized by means of wind energy, thereby reducing the energy consumption.

[0011] In one embodiment of the first aspect,

[0012] The second fan is magnetically connected with the first fan, so that the second fan can drive the first fan to rotate in a rotating manner.

[0013] The effect of the embodiment is that the kinetic energy is transmitted between the external second fan and the internal first fan through the magnetic field force without direct contact, so that the opening on the cabinet is avoided, and the sealing of the cabinet is not affected.

[0014] In one embodiment of the first aspect,

[0015] The first fan comprises a first fan body, a first rotating shaft, and a first magnetic assembly, the first fan body is connected to the first rotating shaft, and the first rotating shaft is connected to the first magnetic assembly.

[0016] The second fan comprises a second fan body, a second rotating shaft, and a second magnetic assembly, the second fan body is connected to the second rotating shaft, and the second rotating shaft is connected to the second magnetic assembly.

[0017] The first magnetic assembly and the second magnetic assembly are magnetically connected to transmit driving force.

[0018] The effect of the embodiment is that the external second fan can drive the internal first fan to rotate without contact by setting the linkage structure and the magnetic assembly, which is simple in structure, easy to operate, and has obvious effect.

[0019] In one embodiment of the first aspect,

[0020] The first magnetic assembly comprises:

[0021] A first rotating disc is rotatably arranged relative to the cabinet; and

[0022] A plurality of first magnets are arranged on the first rotating disc in a circumferential array around a first center, adjacent first magnets have opposite polarities, the first rotating shaft is connected to the first rotating disc, and a first axis of the first rotating shaft passes through the first center.

[0023] The second magnetic assembly comprises:

[0024] A second rotating disc is rotatably arranged relative to the cabinet; and

[0025] A plurality of second magnets are arranged on the second rotating disc in a circumferential array around a second center, adjacent second magnets have opposite polarities, the second rotating shaft is connected to the second rotating disc, and a second axis of the second rotating disc passes through the second center.

[0026] The first rotating disc and the second rotating disc are oppositely arranged and the first axis and the second axis are coincident.

[0027] The effect of the embodiment is that during the driving of the vehicle, the second fan rotates to drive the first fan to rotate, the blowing of the air in the box by the first fan strengthens the internal air flow, thereby reducing the temperature of the heating device to a certain extent, the stability is better than that of the contact type heat dissipation, the heat dissipation efficiency is improved, the structure is also more simple and practical, the manufacturing cost is reduced, and the energy consumption is reduced by driving with the wind energy during the driving of the vehicle, and the internal and external are driven by the non-contact type, which does not affect the sealing of the box. The embodiment reduces the temperature of the device with large current during the driving of the vehicle.

[0028] In one embodiment of the first aspect,

[0029] The first rotating disc includes a first position in a rotation-stopping state, the second rotating disc includes a second position in a rotation-stopping state, and when the first rotating disc is in the first position and the second rotating disc is in the second position, the first magnets on the first rotating disc and the second magnets on the second rotating disc are one-to-one aligned in the direction of the first axis.

[0030] The effect of the embodiment is that the two groups of magnets with magnetic force are arranged in the same structure and symmetrically, which increases the magnetic field force effect and promotes the follow-up ability.

[0031] In one embodiment of the first aspect, the battery device further includes a driving member arranged in the interior of the box, and the driving member is used to drive the first fan to rotate. The driving member is arranged in the interior of the box and is used to drive the first fan to rotate. The effect of the driving member is to drive the first fan when the vehicle is in a parked state. For example, when the vehicle is in a parked charging state, there are some devices prone to heating, thereby reducing the temperature thereof.

[0032] In one embodiment of the first aspect, the battery device further includes a driving member arranged in the interior of the box, and the driving member is used to drive the first fan body to rotate, and the first fan body is connected to the first rotating shaft and the driving member through a clutch to switch the driving source.

[0033] The embodiment provides a driving member. When the second fan is not blown by wind in a non-driving state of the vehicle, the rotation of the second fan is stopped. When the battery device of the vehicle is charged, a large current is generated in some devices, so that the temperature of the devices is increased. Therefore, the embodiment drives the first fan body in another mode, that is, the driving member. The first fan body is switched by the clutch, so that the first fan body can rotate by the driving member when the first fan body is charged, so that the temperature of the device with high temperature is reduced.

[0034] In one embodiment of the first aspect, the clutch comprises an inner gear, an outer gear and a pawl, the first rotating shaft is connected to the inner gear of the clutch, the power output end of the driving member is connected to the outer gear of the clutch, the pawl is arranged between the inner gear and the outer gear, and the first fan body is connected to the outer gear.

[0035] The embodiment has the effect that the clutch is a ratchet clutch, which is simple and reliable in structure and can smoothly complete the switching operation.

[0036] In one embodiment of the first aspect, the driving member comprises a motor.

[0037] The embodiment has the effect that the driving member is a motor, the motor driving is reliable and convenient, and the power taking is convenient.

[0038] In one embodiment of the first aspect, the box further comprises a temperature sensor, a speed sensor and a controller, the temperature sensor and the speed sensor are electrically connected to the controller, the controller is electrically connected to the driving member, the speed sensor is used for detecting the rotating speed of the first fan body, and the temperature sensor is used for detecting the temperature in the box.

[0039] The embodiment has the effect that the rotating speed and start-stop of the first fan body can be controlled according to the temperature condition, so that the heat dissipation of the device prone to heating is effectively and accurately controlled.

[0040] In one embodiment of the first aspect, the first fan and the second fan are arranged on the box wall of the box, and sealing members are arranged between the first fan, the second fan and the box. The first fan and the second fan are arranged on the box wall of the box, and the sealing members are arranged, so that the closed property of the inside of the fan is maintained, and the fan is prevented from being disturbed by the outside.

[0041] In one embodiment of the first aspect,

[0042] The first magnetic assembly further comprises a first housing having a first housing cavity, the first rotating disc is arranged in the first housing cavity, a cavity opening side of the first housing cavity is connected with a box wall of the box body and the two are provided with the sealing element, and the first rotating shaft extends into the first housing cavity on a side of the first housing away from the cavity opening of the first housing to connect the first rotating disc.

[0043] The second magnetic assembly further comprises a second housing having a second housing cavity, the second rotating disc is arranged in the second housing cavity, a cavity opening side of the second housing cavity is connected with a box wall of the box body and the two are provided with the sealing element, and the second rotating shaft extends into the second housing cavity on a side of the second housing away from the cavity opening of the second housing to connect the second rotating disc.

[0044] The effect of the embodiment is to provide a housing, which supports the rotating disc and the rotating shaft to meet the rotation requirements of the two, and provides a closed operation environment for the magnet to reduce external interference and increase the stability of the magnetic action.

[0045] In one embodiment of the first aspect, the first magnet is arranged on a side of the first rotating disc facing the box body, and the second magnet is arranged on a side of the second rotating disc facing the box body.

[0046] The arrangement of the embodiment makes the first magnet and the second magnet closer and avoids the obstruction of related structures to strengthen the magnetic force.

[0047] In one embodiment of the first aspect, the battery device further comprises a high-voltage power distribution device electrically connected with the battery monomer, the box body has an energy cavity and an electrical cavity separated from each other, the high-voltage power distribution device is accommodated in the electrical cavity, the battery monomer is accommodated in the energy cavity, and the first fan is arranged in the electrical cavity.

[0048] The effect of the embodiment is to separate the battery monomer and the high-voltage power distribution device to avoid mutual interference, to independently play their respective roles, and the first fan is in the same chamber as the high-voltage power distribution device including the easy-to-heat device, i.e. the electrical cavity, which can better reduce the temperature of the easy-to-heat device.

[0049] In one embodiment of the first aspect, the battery device further comprises a heat exchange assembly, and the first fan and at least part of the heat exchange assembly located in the same chamber or different chambers in communication in the box body.

[0050] The first fan and the heat exchange assembly are arranged in the same chamber or in different chambers which are communicated with each other. When the first fan blows, the air blown by the first fan can flow to the heat exchange assembly, so that the air is cooled, thereby improving the cooling speed of the air in the chamber and achieving the cooling effect of the device which is easy to heat.

[0051] In one embodiment of the first aspect,

[0052] The first magnetic assembly further comprises a first annular tray, the first tray is provided with a first groove for accommodating the first magnet, and the first tray is arranged on the first turntable.

[0053] The second magnetic assembly further comprises a second annular tray, the second tray is provided with a second groove for accommodating the second magnet, and the second tray is arranged on the second turntable.

[0054] The effect of the embodiment is to provide a tray, arrange the magnets on the tray, and arrange the magnets along the annular tray. The tray provides support for the magnets, which facilitates the arrangement of the magnets and improves the accuracy of the arrangement of the magnets.

[0055] In one embodiment of the first aspect, a first magnetic guide is arranged between the first tray and the first turntable and is matched with the shape of the first tray; and a second magnetic guide is arranged between the second tray and the second turntable and is matched with the shape of the second tray.

[0056] The magnetic guide of the embodiment can better conduct the magnetic field, increase the magnetic effect, and increase the driving effect of the second fan on the first fan.

[0057] In the second aspect, the application further provides an electric device comprising the battery device of any one of the embodiments. The use stability and safety of the electric device are improved.

[0058] In one embodiment of the second aspect, the electric device comprises an air duct, the air duct has an air inlet and an air outlet, the air inlet and the air outlet are communicated with each other, and the air outlet is arranged opposite to the second fan.

[0059] The effect of the embodiment is to provide an air duct, which further improves the effect that the second fan can be blown by the wind when the vehicle is running.

[0060] The above description is only a summary of the technical solutions of the application. In order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0063] Figure 2 This is an exploded structural diagram of a battery device provided in some embodiments of this application;

[0064] Figure 3 A schematic diagram of the structure of a battery device housing with a second fan and a first fan provided for some embodiments of this application;

[0065] Figure 4 for Figure 3 Structural diagrams of the second and first fans;

[0066] Figure 5 for Figure 4 A cross-sectional view of the first and second magnetic components.

[0067] Figure 6 for Figure 4 A front view of the first magnetic component;

[0068] Figure 7 for Figure 4 A schematic diagram of the structure of the first fan body, clutch, and drive components;

[0069] Figure 8 for Figure 7 A sectional view along the AA direction.

[0070] The reference numerals in the detailed embodiments are as follows:

[0071] 1000, vehicles;

[0072] 100. Battery assembly; 200. Controller; 300. Motor;

[0073] 10, box; 11, battery cell; 12, first fan; 121, first fan body; 122, first rotating shaft; 123, first magnetic assembly; 124, first rotating disc; 125, first magnet; 13, second fan; 131, second fan body; 132, second rotating shaft; 133, second magnetic assembly; 134, second rotating disc; 135, second magnet; 14, driving member; 15, clutch; 16, inner gear; 17, outer gear; 18, pawl; 19, spring; 20, sealing member; 21, first housing; 22, first housing cavity; 23, second housing; 24, second housing cavity; 25, high-voltage power distribution device; 26, electrical cavity; 27, energy cavity; 28, gear. DETAILED DESCRIPTION

[0074] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0076] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0077] In this paper, the phrase "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment that is not mutually exclusive with other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0078] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents a "or" relationship between the front and rear associated objects.

[0079] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0080] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0081] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0082] At present, from the development of market situation, the application of battery device is more and more extensive. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and military and police equipment, aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0083] The battery device is a complete structural whole, including a box body, a plurality of battery monomers are arranged in the box body, and in some special scenes, a battery monomer can also be arranged in the box body. When the battery monomers are multiple, the same row of battery monomers can form a battery monomer assembly.

[0084] In some embodiments, the box body can be part of the chassis structure of the vehicle. For example, part of the box body can be at least part of the floor of the vehicle, or part of the box body can be at least part of the cross beam and longitudinal beam of the vehicle.

[0085] The battery device can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection by a busbar, where the mixed connection refers to a mixture of series and parallel connections.

[0086] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0087] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into a separate module. As an example, the battery cell assembly can be formed by bundling a plurality of battery cells with a cable tie.

[0088] In some embodiments, the battery device can be a battery pack including a box and one or more battery cell assemblies accommodated in the box.

[0089] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box by fixing the battery module in the box.

[0090] As an example, the battery cell assembly can also be accommodated in the box by directly fixing a plurality of battery cells in the box.

[0091] Embodiments of the present application provide an electric device with the battery device 100, i.e., an electric device using the battery device 100 as a power source.

[0092] The technical solutions described in the embodiments of the present application are applicable to electric devices using the battery device 100, where the electric device can be a vehicle. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric vehicle, a hybrid electric vehicle, or a range extended vehicle, etc.

[0093] The battery device 100 disclosed in the present application can be used in, but is not limited to, electric devices such as vehicles, ships, or aircraft. The electric device can use a power supply system with the battery device 100 disclosed in the present application, which is conducive to improving the use reliability of the electric device.

[0094] The following embodiments are described for convenience with the electric device provided by the embodiments of the present application as a vehicle 1000.

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

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

[0097] As Figure 2 The battery device 100 provided for the embodiments of the present application, the battery monomer 11 of the battery device 100 is an energy storage component, which can perform charge and discharge reactions, and at least one battery monomer 11 forms a battery monomer assembly, which is arranged in the form of a battery monomer assembly in the box body 10, and the stability of the fixed battery monomer assembly needs to be ensured.

[0098] The vehicle 1000 can be powered by a driving motor, and the driving motor needs the battery device 100 to provide the required electric energy, and the battery device 100 simultaneously supplies power to the electrical load on the vehicle 1000. Among them, the high-voltage power distribution device 25 is an energy distribution unit for the battery device 100 to distribute energy to the electrical load such as the driving motor, and plays an irreplaceable important role for the whole vehicle 1000.

[0099] The high-voltage power distribution device 25 includes high-voltage connectors, copper bar adapter plates, and other devices for current output. During the driving process of the vehicle 1000 using the battery device 100 as a driving power supply, the current is large, the temperature of these devices rises, the resistance increases, and the energy output efficiency is reduced.

[0100] In the related art, a contact type mode such as a heat-conducting pad or other heat-conducting structure is used to directly contact the connector / copper bar to the water cooling device, the heat generated on the connector / copper bar due to overcurrent is transmitted to the water cooling device in the form of contact type heat diffusion, and then the heat is dissipated through water circulation in the water cooling device to achieve the cooling of the high-voltage power distribution device. The contact type heat dissipation has a limited contact area and is prone to contact gaps, and the effect is poor. In addition, the heat-conducting pad, heat-conducting structure or water cooling device specially arranged for these devices has a complex structure, complicated manufacturing process, high cost and may affect the sealing of the battery device in some cases.

[0101] Based on this, the battery device 100 is provided to effectively reduce the temperature of some devices of the battery device 100 when a large current flows therethrough during the driving of the vehicle 1000.

[0102] Please refer to Figures 2-4 The battery device 100 includes a box body 10, a battery cell 11, a first fan 12 and a second fan 13.

[0103] The battery cell 11 is arranged in the box body 10, the first fan 12 is arranged inside the box body 10, and the second fan 13 is arranged outside the box body 10, so that the external airflow drives the second fan 13 to rotate, and the second fan 13 is drivingly connected with the first fan 12, so that the second fan 13 can drive the first fan 12 to rotate under the condition of rotation.

[0104] Specifically, the box body 10 has a cavity capable of accommodating the battery cell 11, the first fan 12 is arranged inside the box body 10, and the second fan 13 is arranged outside the box body 10, so that when the external airflow drives the second fan 13 to rotate, the second fan 13 drives the first fan 12 inside the box body 10 to rotate, and the rotation of the first fan 12 promotes the circulation of the gas inside the box body 10.

[0105] The battery device 100 of the embodiment can include a plurality of battery cells 11, which can exist in the form of a battery cell assembly, and the battery cells 11 can be arranged in the cavity of the box body 10, and the plurality of battery cells 11 are connected with each other in parallel or in series to output and store electric energy.

[0106] The electric energy of the battery cell 11 needs to be reasonably distributed, and the battery device 100 of the embodiment can include a high-voltage power distribution device 25 which can reasonably distribute the electric energy of the battery cell 11 to the equipment in need of power, such as a driving motor, an electric air conditioner compressor, a PTC heater, a DC / DC and other high-voltage electrical equipment.

[0107] The high-voltage power distribution device 25 can be arranged in a separate chamber of the box 10, which can be in communication with the chamber in which the battery monomer 11 is arranged, and in some cases, the battery monomer 11 can be arranged in the same chamber. The high-voltage power distribution device 25 has some devices that generate more heat.

[0108] Based on this, the first fan 12 in the box 10 can rotate, which can promote the air flow in the box 10 when the first fan 12 rotates, thereby strengthening the air flow near the device with higher temperature, thereby cooling it. The flowing air can contact the water-cooled plate of the battery monomer 11, thereby reducing the air temperature.

[0109] The effect of the present embodiment is that the battery device 100 can be installed on the vehicle 1000 as a driving power source of the vehicle 1000, and when the vehicle 1000 is running, the external second fan 13 rotates under the action of the airflow, thereby rotating the internal first fan 12, thereby strengthening the airflow in the box 10. The temperature of some high-temperature heat-generating devices in the battery device 100 is reduced to a certain extent, thereby improving the energy output efficiency, and the rotation is realized by means of wind energy, thereby reducing the energy consumption.

[0110] In some embodiments, referring to Figures 2-6 , the second fan 13 is magnetically connected to the first fan 12, so that the second fan 13 can drive the first fan 12 to rotate under the action of rotation.

[0111] Specifically, the magnetic connection refers to the connection formed by the interaction between the devices with magnetism through the magnetic field force, and the kinetic energy is transmitted through the magnetic field force without contact.

[0112] The effect of the present embodiment is that the kinetic energy is transmitted between the external second fan 13 and the internal first fan 12 through the magnetic field force without direct contact, thereby avoiding opening on the box 10, and not affecting the sealing of the box 10.

[0113] In some embodiments, referring to Figures 2-6 , the first fan 12 includes a first fan body 121, a first rotating shaft 122, and a first magnetic component 123, the first fan body 121 is connected to the first rotating shaft 122, and the first rotating shaft 122 is connected to the first magnetic component 123.

[0114] The second fan 13 includes a second fan body 131, a second rotating shaft 132, and a second magnetic component 133, the second fan body 131 is connected to the second rotating shaft 132, and the second rotating shaft 132 is connected to the second magnetic component 133;

[0115] The first magnetic assembly 123 and the second magnetic assembly 133 are magnetically connected to transmit driving force.

[0116] Specifically, the first fan body 121 and the second fan body 131 refer to parts with fan blades that can rotate to promote gas flow, the first rotating shaft 122 and the second rotating shaft 132 are respectively connected to the first fan body 121 and the second fan body 131, and the two can be respectively connected to the central position of the fan body. When the rotating shaft rotates, the fan body can follow, and when the fan body rotates, the rotating shaft can also follow.

[0117] The first magnetic assembly 123 and the second magnetic assembly 133 can respectively generate a magnetic field, and generate mutual magnetic field force. When the second fan body 131 rotates to drive the second rotating shaft 132 to rotate, the second rotating shaft 132 drives the second magnetic assembly 133 to rotate, and the second magnetic assembly 133 interacts with the first magnetic assembly 123 to make the first magnetic assembly 123 follow, and the first magnetic assembly 123 rotates to drive the first fan body 121 to rotate.

[0118] The effect of the embodiment is that by setting the linkage structure and the magnetic assembly, the external second fan 13 can drive the internal first fan 12 to rotate without contact, the structure is simple and easy to operate, and the effect is obvious.

[0119] In some embodiments, referring to Figures 2-6 , the first magnetic assembly 123 includes a first rotating disc 124 and a plurality of first magnets 125.

[0120] The first rotating disc 124 is rotatably arranged relative to the box body 10; the plurality of first magnets 125 are arranged on the first rotating disc 124 in a circumferential array around a first center, adjacent first magnets 125 have opposite polarities, the first rotating shaft 122 is connected to the first rotating disc 124, and a first axis of the first rotating shaft 122 passes through the first center.

[0121] The second magnetic assembly 133 includes a second rotating disc 134 and a plurality of second magnets 135.

[0122] The second rotating disc 134 is rotatably arranged relative to the box body 10; the plurality of second magnets 135 are arranged on the second rotating disc 134 in a circumferential array around a second center, adjacent second magnets 135 have opposite polarities, the second rotating shaft 132 is connected to the second rotating disc 134, and a second axis of the second rotating disc 134 passes through the second center.

[0123] The first rotating disc 124 and the second rotating disc 134 are oppositely arranged and the first axis coincides with the second axis.

[0124] Specifically, the first magnetic assembly 123 and the second magnetic assembly 133 are oppositely arranged, both of which are arranged at the inner and outer walls of the cabinet 10 and oppositely arranged, specifically, the first rotating disc 124 and the second rotating disc 134 are oppositely arranged, the first rotating shaft 122 and the second rotating shaft 132 are connected to the faces of the first rotating disc 124 and the second rotating disc 134 away from each other, and the first rotating shaft 122 is connected to the first fan body 121, and the second rotating shaft 132 is connected to the second fan body 131.

[0125] Regarding the second magnetic assembly 133, the second fan body 131 is connected to the second rotating shaft 132 of the second magnetic assembly 133, when the second fan body 131 rotates, the second rotating disc 134 is driven to rotate by the second rotating shaft 132, the second rotating shaft 132 and the second rotating disc 134 are coaxially rotated, the second magnet 135 is arranged on the second rotating disc 134, and is arranged in a circumferential array around the second center, since the second axis of the second rotating shaft 132 passes through the second center, when the second rotating disc 134 rotates, the plurality of second magnets 135 revolve around the second center. The polarities of adjacent second magnets 135 are opposite, and adjacent second magnets 135 refer to two second magnets 135 adjacent in the circumferential direction of the plurality of second magnets 135 arranged around the second center.

[0126] Regarding the first magnetic assembly 123, when the second rotating disc 134 rotates, the second rotating disc 134 drives the first rotating disc 124 to rotate under the action of the magnetic field force, the first rotating disc 124 rotates to drive the first rotating shaft 122 to rotate coaxially, so as to drive the first fan body 121 to follow. The plurality of first magnets 125 are arranged on the first rotating disc 124 and arranged in a circumferential array around the first center, the polarities of adjacent first magnets 125 are opposite, the first rotating shaft 122 is connected to the first rotating disc 124, and the first axis of the first rotating shaft 122 passes through the first center. Therefore, when the plurality of second magnets 135 revolves around the second center, the plurality of first magnets 125 will be driven to revolve around the first center through the magnetic field force between the second magnet 135 and the first magnet 125, so as to drive the first rotating disc 124 to rotate.

[0127] The first axis of the first rotating shaft 122 of the first magnetic assembly 123 and the second axis of the second rotating shaft 132 of the second magnetic assembly 133 are coincident, so the first center and the second center are on the first axis and the second axis, and the first rotating disc 124 and the second rotating disc 134 are oppositely arranged in the direction of the first axis.

[0128] Specifically, the plurality of second magnets 135 revolve, and generate a force on the plurality of first magnets 125 inside, that is, power can be transmitted without contact by using the interaction of magnetic force. When the second magnets 135 revolve around the second center, a changing magnetic field is generated between the gap with the first magnets 125, and the changing magnetic field generates eddy current or magnetic torque on the first magnets 125 inside, so that the first magnets 125 rotate following the rotation of the second magnets 135, and the first turntable 124 rotates following the rotation of the first magnets 125, and then the first shaft 122 of the first turntable 124 also rotates, thereby finally rotating the first fan body 121 inside.

[0129] The effect of the embodiment is that during the driving of the vehicle 1000, the second fan 13 rotates, thereby driving the first fan 12 to rotate, and the blowing of the air inside the box 10 by the first fan 12 strengthens the internal air flow, thereby reducing the temperature of the heating device to a certain extent, and the stability is better, the heat dissipation efficiency is improved, the structure is also more simple and practical, the manufacturing cost is reduced, and the energy consumption is reduced by driving with the wind energy during the driving of the vehicle 1000, and the internal and external are driven by non-contact, which does not affect the sealing of the box 10. The embodiment reduces the temperature of the device with large current during the driving of the vehicle 1000.

[0130] In some embodiments, please refer to Figure 5 、 Figure 6 The first turntable 124 includes a first position in a rotation-stopping state, and the second turntable 134 includes a second position in a rotation-stopping state, and when the first turntable 124 is in the first position and the second turntable 134 is in the second position, the plurality of first magnets 125 located on the first turntable 124 and the plurality of second magnets 135 located on the second turntable 134 are one-to-one aligned in the first axis direction.

[0131] Specifically, the embodiment provides that the number of the first magnets 125 and the second magnets 135 is the same, the shape is the same, the extension arrangement path is the same, and the spacing of adjacent magnets is the same. That is, they can be one-to-one aligned.

[0132] The first turntable 124 can rotate, and the first turntable 124 can stop at any position, and the second turntable 134 can also stop at any position.

[0133] The first position is one of the rotation-stopping positions of the first turntable 124, and the second position is one of the rotation-stopping positions of the second turntable 134. When they are in the two positions respectively, the plurality of first magnets 125 and the plurality of second magnets 135 are one-to-one aligned. That is, there are such first and second positions that can make them one-to-one aligned.

[0134] The effect of the embodiment is that the two groups of magnets with magnetic force are symmetrically arranged and have the same structure, which increases the magnetic field force effect and promotes the following ability.

[0135] In some embodiments, referring to Figure 4 , Figure 7 , Figure 8 The battery device 100 further comprises a driving member 14 arranged in the interior of the box 10, which is used to drive the first fan 12 to rotate.

[0136] The box 10 further comprises a driving member 14 arranged in the interior of the box 10, which is used to drive the first fan 12 to rotate. For example, when the vehicle 1000 is in the parking charging state, some devices are prone to heat, thereby reducing the temperature thereof.

[0137] In some embodiments, referring to Figure 4 , Figure 7 , Figure 8 The battery device 100 further comprises a driving member 14 arranged in the interior of the box 10, which is used to drive the first fan body 121 to rotate, and the first fan body 121 is connected to the first rotating shaft 122 and the driving member 14 through the clutch 15 to switch the driving source.

[0138] Specifically, the box 10 comprises a driving member 14, which can be used to drive the first fan body 121, that is, the first fan body 121 can rotate under the driving of the driving member 14 in addition to the first rotating shaft 122. The clutch 15 can be used to switch the driving source, which refers to the structure driving the first fan body 121 to rotate.

[0139] The embodiment provides the driving member 14. When the second fan 13 is not blown by the wind in the non-running state of the vehicle 1000, the rotation is stopped. When the battery device 100 of the vehicle 1000 is charged, some devices generate a large current, thereby increasing the temperature thereof. Therefore, for this case, the embodiment adopts another form to drive the first fan body 121, that is, the driving member 14. Through the switching of the clutch 15, the first fan body 121 can rotate by means of the driving member 14 during the charging, thereby reducing the temperature of the device with high temperature.

[0140] In some embodiments, referring to Figure 4 , Figure 7 , Figure 8The clutch 15 comprises an inner gear 16, an outer gear 17 and a pawl 18, the first rotating shaft 122 is connected to the inner gear 16 of the clutch 15, the power output end of the driving member 14 is connected to the outer gear 17 of the clutch 15, the pawl 18 is arranged between the inner gear 16 and the outer gear 17, and the first fan body 121 is connected to the outer gear 17.

[0141] Specifically, the clutch 15 can be a ratchet clutch, the clutch 15 comprises an outer gear 17, an inner gear 16 and a pawl 18, the first rotating shaft 122 is inserted into the wheel hole of the inner gear 16 and connected to the inner gear 16, the outer gear 17 is sleeved on the outer periphery of the inner gear 16, the outer periphery of the inner gear 16 is provided with the pawl 18, the spring 19 is arranged between the pawl 18 and the outer periphery of the inner gear 16, and the pawl 18 is clamped on the inner teeth of the outer gear 17. For example, when the inner gear 16 rotates relative to the outer gear 17 in the counterclockwise direction, the outer gear 17 can be driven to rotate counterclockwise by the pawl 18, so that the first fan body 121 rotates, and the first fan body 121 can be coaxially connected to the outer gear 17. When the inner gear 16 rotates in the clockwise direction, the spring 19 of the pawl 18 is compressed, and the pawl 18 cannot drive the outer gear 17 to rotate clockwise. The power output end of the driving member 14 is connected to the outer gear 17 of the clutch 15, and specifically, the power output end of the driving member 14 can be coaxially connected to a gear 28, the gear 28 is engaged with the outer teeth of the outer gear 17, and the gear 28 is used to drive the outer gear 17 to rotate in the counterclockwise direction, and at this time the inner gear 16 does not follow, only the outer gear 17 rotates and drives the first fan body 121 to rotate. When the driving member 14 is in a stopped state, when the inner gear 16 drives the outer gear 17 to rotate counterclockwise, the gear 28 connected to the power output end of the driving member 14 can follow, and the power output end of the driving member 14 can follow.

[0142] The effect of the embodiment is that the clutch 15 adopted is a ratchet clutch, which is simple in structure and reliable, and can smoothly complete the switching operation.

[0143] In some embodiments, the driving member 14 comprises an electric motor.

[0144] Specifically, the driving member 14 can be an electric motor arranged in the box body 10, and the power output shaft of the electric motor can be provided with a gear 28 engaged with the outer gear 17 of the clutch 15. The electric motor can be powered by a low-voltage circuit in the battery device 100, and the electric energy comes from the battery monomer 11.

[0145] The effect of the embodiment is that the driving member 14 is an electric motor, which is reliable and convenient to drive, and is convenient to take power.

[0146] In some embodiments, the box 10 is further provided with a temperature sensor, a speed sensor and a controller 200, the temperature sensor and the speed sensor are electrically connected to the controller 200, the controller 200 is electrically connected to the driving member 14, the speed sensor is used to detect the rotating speed of the first fan 12, and the temperature sensor is used to detect the temperature in the box 10.

[0147] Specifically, the temperature sensor can detect the temperature in the box 10, and can detect the temperature of the gas around the easy-to-heat device, and can be arranged adjacent to the easy-to-heat device, such as being placed in the high-voltage power distribution device 25, so that the temperature of the gas near the easy-to-heat device can be obtained in time. The easy-to-heat device refers to the device that needs to pass through a large current in the above embodiments. In the parking charging state, the controller 200 can receive the signal transmitted from the temperature sensor, and control whether the driving member 14 operates, and can also control the operating speed of the driving member 14, etc. The operating speed of the first fan body 121 can be started and adjusted in time, the air flow is promoted, and the temperature of the easy-to-heat device is reduced. At the same time, the speed sensor is used to detect the rotating speed of the first fan body 121 and transmit a signal value to the controller 200, and the controller 200 can adjust the rotating speed of the first fan body 121 in real time according to the signal.

[0148] The effect of the embodiment is that the rotating speed and start-stop of the first fan body 121 can be controlled according to the temperature condition, so that the heat dissipation of the easy-to-heat device can be effectively and accurately controlled.

[0149] In some embodiments, please refer to Figures 2-6 The first fan 12 and the second fan 13 are arranged on the box wall of the box 10, and the sealing member 20 is arranged between the first fan 12 and the second fan 13 and the box 10.

[0150] Specifically, the first fan 12 and the second fan 13 are arranged on the box wall of the box 10 and are provided with the sealing member 20, so as to maintain the closed nature of the inside of the fan and avoid external interference.

[0151] In some embodiments, please refer to Figures 4-6 The first magnetic assembly 123 further comprises a first housing 21, the first housing 21 has a first housing cavity 22, the first rotating disc 124 is arranged in the first housing cavity 22, the cavity opening side of the first housing cavity 22 is connected to the box wall of the box 10 and the sealing member 20 is arranged between the cavity opening side of the first housing cavity 22 and the box wall of the box 10, and the first rotating shaft 122 extends into the first housing cavity 22 on the side of the first housing 21 away from the cavity opening to connect the first rotating disc 124.

[0152] The second magnetic assembly 133 further comprises a second housing 23, the second housing 23 has a second housing cavity 24, the second rotating disc 134 is arranged in the second housing cavity 24, the cavity opening side of the second housing cavity 24 is connected with the cabinet wall of the cabinet 10 and a sealing element 20 is arranged between the two, and the second rotating shaft 132 extends into the second housing cavity 24 on the side of the second housing 23 away from the cavity opening to connect the second rotating disc 134.

[0153] Specifically, regarding the first magnetic assembly 123, the first rotating disc 124 and the first rotating shaft 122 are connected with each other and can rotate independently, and the first housing 21 provides support, the first housing 21 has a first housing cavity 22, the shape of the first housing cavity 22 can be matched with the shape of the first rotating disc 124, the first rotating disc 124 is arranged in the first housing cavity 22, the first housing cavity 22 has a cavity opening, the cavity opening faces the cabinet wall of the cabinet 10, the cavity opening side is attached to the cabinet wall, and a sealing element 20 is arranged between the cavity opening and the cabinet wall to seal the cavity opening and maintain the operating environment of the first rotating disc 124 inside the first housing cavity 22, the first rotating shaft 122 is connected to the side of the first rotating disc 124 away from the cabinet wall, and an opening is arranged on the first housing 21 for the first rotating shaft 122 to extend out, the first rotating shaft 122 and the inner wall of the opening are also sealed, and the side of the first rotating disc 124 facing the cabinet wall is provided with the first magnet 125.

[0154] Regarding the second magnetic assembly 133, the arrangement form of the second magnetic assembly 133 is the same as that of the first magnetic assembly 123 described above.

[0155] The effect of the embodiment is to provide a housing to support the rotating disc and the rotating shaft to meet the rotation requirements of the two, and to provide a closed operating environment for the magnet to reduce external interference and increase the stability of the magnetic action.

[0156] In some embodiments, referring to Figure 5 、 Figure 6 , the first magnet 125 is arranged on the side of the first rotating disc 124 facing the cabinet 10, and the second magnet 135 is arranged on the side of the second rotating disc 134 facing the cabinet 10.

[0157] The arrangement form of the embodiment makes the first magnet 125 and the second magnet 135 closer and avoids the obstruction of related structures, thereby strengthening the magnetic force.

[0158] In some embodiments, referring to Figure 2 、 Figure 3 , the battery device 100 further comprises a high-voltage power distribution device 25 electrically connected with the battery cell 11, the cabinet 10 has an energy cavity 27 and an electrical cavity 26 separated from each other, the high-voltage power distribution device 25 is accommodated in the electrical cavity 26, the battery cell 11 is accommodated in the energy cavity 27, and the first fan 12 is arranged in the electrical cavity 26.

[0159] Specifically, the chamber includes an energy chamber 27 and an electrical chamber 26, both of which are chambers, the battery monomer 11 is arranged in the energy chamber 27, and the high-voltage power distribution device 25 and the first fan 12 are arranged in the electrical chamber 26.

[0160] The high-voltage power distribution device 25 has heat-prone devices for flowing through the current inside, and the battery device 100 is provided with the first fan 12, and the air flow inside the box 10 can be enhanced by means of the blowing of the first fan 12, so as to reduce the temperature of the heat-prone devices and increase the use stability of the high-voltage power distribution device 25. Therefore, the first fan 12 and the high-voltage power distribution device 25 are arranged in the same electrical chamber 26.

[0161] The effect of the embodiment is that the battery monomer 11 and the high-voltage power distribution device 25 are arranged separately to avoid mutual interference, to independently play their respective roles, and the first fan 12 is also in the same chamber as the high-voltage power distribution device 25 including heat-prone devices, i.e. the electrical chamber 26, which can better reduce the temperature of the heat-prone devices.

[0162] In some embodiments, the battery device 100 further comprises a heat exchange assembly, and the first fan 12 and at least part of the heat exchange assembly are located in the same chamber or different chambers in communication in the box 10.

[0163] Specifically, the battery monomer 11 has a heat exchange assembly, which can be a water-cooled plate, and the water-cooled plate is attached to the battery monomer 11 to cool the battery monomer 11. The surface of the water-cooled plate has a lower temperature, which can not only exchange heat with the battery monomer 11, but also exchange heat with the air in the space. The embodiment provides that the air in the chamber where the first fan 12 is located and the chamber where the heat exchange assembly is located can flow, so the first fan 12 and the heat exchange assembly are arranged in the same chamber or are arranged in different chambers in communication. When the first fan 12 blows, the air blown by the first fan 12 can flow to the heat exchange assembly, thereby cooling the air, thereby being able to improve the cooling speed of the air in the box, so as to achieve the effect of cooling the heat-prone devices.

[0164] In some embodiments, the first magnetic assembly further comprises a ring-shaped first tray, the first tray is provided with a first groove for accommodating the first magnet 125, and the first tray is arranged on the first turntable 124.

[0165] The second magnetic assembly further comprises a ring-shaped second tray, the second tray is provided with a second groove for accommodating the second magnet 135, and the second tray is arranged on the second turntable 134.

[0166] Hereinafter, the first tray and the second tray are collectively referred to as a tray, the first magnet 125 and the second magnet 135 are collectively referred to as a magnet, the first groove and the second groove are collectively referred to as a groove, and the first turntable 124 and the second turntable 134 are collectively referred to as a turntable, in order to describe.

[0167] Specifically, the magnets are arranged on the rotating disc in a circumferential array. In order to facilitate the arrangement of the magnets, the embodiment provides a tray, which is a circular ring and extends in the arrangement direction of the magnets. The magnets can be arranged on the tray, and then the tray is fixed on the rotating disc, so as to realize the installation of the magnets. Specifically, a groove can be formed on the tray, and the shape of the groove is matched with the shape of the magnet, so that the groove can be exactly placed in the magnet. The shape of the magnet can be a cuboid. The tray is arranged on the rotating disc.

[0168] The effect of the embodiment is to provide a tray, arrange the magnets on the tray, and arrange the magnets along the ring. The tray provides support for the magnets, facilitates the arrangement of the magnets, and improves the accuracy of the arrangement of the magnets.

[0169] In some embodiments, a first magnetic guide matched with the shape of the first tray is arranged between the first tray and the first rotating disc 124; and a second magnetic guide matched with the shape of the second tray is arranged between the second tray and the second rotating disc 134.

[0170] Specifically, the two magnetic guides can be annular copper discs, and the shapes of the two magnetic guides are matched with the shapes of the first tray and the second tray respectively. The two magnetic guides can be mutually attached to and connected with the first tray and the second tray respectively. The two magnetic guides are also connected with the first rotating disc 124 and the second rotating disc 134 respectively, so as to position the first tray and the second tray.

[0171] The embodiment provides the magnetic guides to better conduct the magnetic field, increase the magnetic effect, and increase the driving effect of the second fan 13 on the first fan 12.

[0172] The application also provides a power consumption device comprising the battery device 100 provided in any one of the embodiments.

[0173] Specifically, the power consumption device can be a vehicle 1000, a ship, an aircraft, or the like powered by the battery device 100. The output current of the battery cell 11 is used as the energy source. When the power consumption device is provided with the battery device 100 of the embodiment, the first fan 12 is driven to rotate by the second fan 13 during driving, so as to reduce the temperature of the easily-heated components in the battery device 100, thereby improving the use stability and safety of the power consumption device.

[0174] In some embodiments, the power consumption device comprises an air duct having an air inlet and an air outlet. The air inlet and the air outlet are in communication with each other, and the air outlet is arranged opposite to the second fan 13.

[0175] For example, when the electrical device is the vehicle 1000, a wind channel is arranged on the vehicle 1000, the wind channel has two side ports, which are an air inlet and an air outlet respectively, the two side ports are communicated with each other, the wind channel can be a channel structure assembled by a plate material and the like, or a channel structure formed based on the structure of the vehicle 1000. The air inlet of the wind channel is located at the front end of the vehicle 1000, so that the wind in the running vehicle can be blown into the wind channel, and the air outlet is arranged opposite to the second fan 13, so as to blow the gas to the second fan 13.

[0176] The effect of the embodiment is to provide the wind channel, and further improve the effect that the second fan 13 can be blown by the wind in the running vehicle 1000.

[0177] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a box body; a battery cell arranged in the box body; a first fan arranged in the interior of the box body; and a second fan arranged outside the box body, wherein an external airflow drives the second fan to rotate, and the second fan is drivingly connected with the first fan so that the second fan can drive the first fan to rotate when the second fan rotates. The second fan is magnetically connected with the first fan so that the second fan can drive the first fan to rotate when the second fan rotates.

2. The battery device of claim 1, wherein 3. The battery device according to claim 1, wherein the first fan comprises a first fan body, a first rotating shaft and a first magnetic assembly, the first fan body is connected with the first rotating shaft, and the first rotating shaft is connected with the first magnetic assembly; the second fan comprises a second fan body, a second rotating shaft and a second magnetic assembly, the second fan body is connected with the second rotating shaft, and the second rotating shaft is connected with the second magnetic assembly; the first magnetic assembly and the second magnetic assembly are magnetically connected to transmit driving force.

4. The battery device according to claim 3, wherein the first magnetic assembly comprises: a first rotating disc arranged to rotate relative to the box body; and a plurality of first magnets arranged on the first rotating disc and arranged in a circumferential array around a first center, adjacent first magnets have opposite polarities, the first rotating shaft is connected with the first rotating disc, and a first axis of the first rotating shaft passes through the first center; the second magnetic assembly comprises: a second rotating disc arranged to rotate relative to the box body; and a plurality of second magnets arranged on the second rotating disc and arranged in a circumferential array around a second center, adjacent second magnets have opposite polarities, the second rotating shaft is connected with the second rotating disc, and a second axis of the second rotating disc passes through the second center; the first rotating disc and the second rotating disc are arranged oppositely, and the first axis coincides with the second axis.

5. The battery device according to claim 4, wherein the first rotating disc comprises a first position in a rotation-stopping state, the second rotating disc comprises a second position in a rotation-stopping state, and when the first rotating disc is in the first position and the second rotating disc is in the second position, the first magnets on the first rotating disc and the second magnets on the second rotating disc are aligned one by one in the direction of the first axis. The battery device further comprises a driving member arranged in the interior of the box body, and the driving member is used to drive the first fan to rotate.

6. The battery device of any one of claims 1-5, wherein, The battery device further comprises a driving member arranged in the interior of the box body, and the driving member is used to drive the first fan body to rotate, the first fan body is connected with the first rotating shaft and the driving member through a clutch to switch driving sources.

7. The battery device of any one of claims 3-5, wherein, The clutch comprises an inner gear, an outer gear and a pawl, the first rotating shaft is connected with the inner gear of the clutch, a power output end of the driving member is connected with the outer gear of the clutch, the pawl is arranged between the inner gear and the outer gear, and the first fan body is connected with the outer gear.

8. The battery device of claim 7, wherein ​ 9. The battery device of claim 7, wherein The driving member comprises a motor.

10. The battery device of claim 7, wherein The box further comprises a temperature sensor, a speed sensor and a controller, the temperature sensor and the speed sensor are electrically connected to the controller, and the controller is electrically connected to the driving member, the speed sensor is used to detect the rotating speed of the first fan body, and the temperature sensor is used to detect the temperature in the box.

11. The battery device of claim 4 or 5, wherein The first fan and the second fan are arranged on the box wall of the box, and a sealing member is arranged between the first fan, the second fan and the box.

12. The battery device of claim 11, wherein, The first magnetic assembly further comprises a first shell having a first shell cavity, the first rotating disc is arranged in the first shell cavity, one side of the cavity opening of the first shell cavity is connected to the box wall of the box and a sealing member is arranged therebetween, and the first rotating shaft extends into the first shell cavity on the side of the first shell away from the cavity opening of the first shell to connect the first rotating disc. The second magnetic assembly further comprises a second shell having a second shell cavity, the second rotating disc is arranged in the second shell cavity, one side of the cavity opening of the second shell cavity is connected to the box wall of the box and a sealing member is arranged therebetween, and the second rotating shaft extends into the second shell cavity on the side of the second shell away from the cavity opening of the second shell to connect the second rotating disc.

13. The battery device of claim 12, wherein, The first magnet is arranged on the side of the first rotating disc facing the box, and the second magnet is arranged on the side of the second rotating disc facing the box.

14. The battery device of any one of claims 1-5, wherein, The battery device further comprises a high-voltage power distribution device electrically connected to the battery monomer, the box has an energy cavity and an electrical cavity separated from each other, the high-voltage power distribution device is accommodated in the electrical cavity, the battery monomer is accommodated in the energy cavity, and the first fan is arranged in the electrical cavity.

15. The battery device of any one of claims 1-5, wherein, The battery device further comprises a heat exchange assembly, and the first fan and at least part of the heat exchange assembly are located in the same chamber or different chambers connected in communication in the box.

16. The battery device of claim 4 or 5, wherein, The first magnetic assembly further comprises an annular first tray provided with a first groove for accommodating the first magnet, and the first tray is arranged on the first rotating disc. The second magnetic assembly further comprises an annular second tray provided with a second groove for accommodating the second magnet, and the second tray is arranged on the second rotating disc.

17. The battery device of claim 16, wherein, A first magnetic guide member matched with the shape of the first tray is arranged between the first tray and the first rotating disc, and a second magnetic guide member matched with the shape of the second tray is arranged between the second tray and the second rotating disc.

18. An electrical device, comprising: The battery device comprises the battery device of any one of claims 1-17.

19. The powered device of claim 18, wherein, The power consumption device comprises an air duct having an air inlet and an air outlet, the air inlet and the air outlet are in communication with each other, and the air outlet is arranged opposite to the second fan.

Images