Battery device, insulated connection and electric device

Abstract

The application discloses a battery device, an insulating connecting piece and a power utilization device. The high-voltage box comprises a current collecting component and a fixing piece. The insulating connecting piece comprises a shell, a connecting part and a height adjusting assembly. Opposite two end faces of the shell along an axial direction are provided with first grooves. The connecting part is arranged in the first groove. The connecting part is connected with the side wall of the first groove. The connecting part is connected with the current collecting component and the fixing piece respectively. The height adjusting assembly is accommodated in the first groove. The height adjusting assembly is used for adjusting the axial height of the insulating connecting piece through the connecting part, so that the performance of the battery device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery, more particularly, to a battery device, an insulating connecting piece and a power utilization device. BACKGROUND

[0002] The battery device is usually provided with a high-voltage box, which plays a role of distributing high-voltage direct current of the battery device, detecting voltage and current of the battery device and the like. The busbar components of each interface in the high-voltage box are usually connected with the fixing member through the insulating connecting piece. However, the current insulating connecting piece has the problems of non-uniform processing model, increased cost of production, assembly and maintenance of the battery device, and too many attached components occupying a large volume in the high-voltage box, which leads to the performance degradation of the battery device.

[0003] Therefore, how to improve the performance of the battery device becomes a problem to be solved. SUMMARY

[0004] The embodiments of the present application provide a battery device, an insulating connecting piece and a power utilization device, which can improve the performance of the battery device.

[0005] In a first aspect, a battery device is provided, the battery device comprising a high-voltage box, the high-voltage box comprising a busbar component and a fixing member, and an insulating connecting piece comprising a shell, a connecting part and a height adjusting assembly, the shell being provided with a first groove at each of the two opposite end faces in the axial direction, the connecting part being arranged in the first groove, the connecting part being connected with the side wall of the first groove, and the connecting part being connected with the busbar component and the fixing member respectively; and the height adjusting assembly being accommodated in the first groove, and the height adjusting assembly being configured to adjust the axial height of the insulating connecting piece through the connecting part.

[0006] In the technical scheme provided by the embodiments of the present application, the axial height of the insulating connecting piece is adjusted by the height adjusting assembly accommodated in the first groove of the shell. Since the component for adjusting the height does not need to occupy space outside the insulating connecting piece, the space occupied is small, which meets the needs of the energy density of the battery device, and the energy density of the battery device can be improved. Moreover, since the axial height of the insulating connecting piece is adjustable, the insulating connecting piece can be compatible with high-voltage boxes of multiple models, and the processing of the insulating connecting piece and the high-voltage box is simpler, thereby the manufacturing cost of the battery device can be saved.

[0007] Moreover, in the technical scheme provided by the embodiments of the present application, the connecting part is accommodated in the first groove arranged at each of the two side end faces of the shell, and the connecting part is connected with the busbar component and the fixing member, so that the insulating connecting piece has a larger height adjusting range, thereby the adaptability of the insulating connecting piece can be improved, and the insulating connecting piece is more suitable when connected with interfaces in different height ranges, and is not easy to break and loosen, thereby the stability of the battery device can be improved.

[0008] In some embodiments, the height adjusting assembly comprises: a first height adjusting part arranged on one side of the connecting part facing the side wall of the first groove; and a second height adjusting part arranged on one side of the side wall of the first groove facing the connecting part; the first height adjusting part and the second height adjusting part cooperate to adjust the axial height of the insulating connecting piece.

[0009] In the technical scheme provided by the embodiments of the present application, the outer wall of the connecting part is provided with the first height adjusting part, and the inner wall of the first groove is provided with the second height adjusting part, so that the axial height of the insulating connecting piece is adjusted through cooperation of the two, thereby enabling the insulating connecting piece to adapt to connection of interfaces with different height differences. Meanwhile, since the first height adjusting part and the second height adjusting part are arranged on the outer wall of the connecting part and the inner wall of the first groove respectively, the volume of the insulating connecting piece is not additionally increased, the additional space occupation of the height adjusting assembly is saved, thereby the volume occupation of the insulating connecting piece is reduced, the small space feature of the battery device is met, and the energy density of the battery device is improved.

[0010] In some embodiments, the first groove is a cylindrical groove, and the second height adjusting part comprises a spiral groove, and the first height adjusting part is at least partially accommodated in the spiral groove.

[0011] In the technical scheme provided by the embodiments of the present application, the second height adjusting part comprises a spiral groove, and the first height adjusting part is at least partially accommodated in the spiral groove, so that the axial height of the insulating connecting piece is adjusted through relative rotation between the connecting part and the shell. Since the axial height of the insulating connecting piece is adjusted through rotation, the adjustment is relatively simple and the insulating connecting piece is not easily damaged, thereby the stability of the insulating connecting piece is improved, and the stability of the battery device is improved.

[0012] In some embodiments, the first height adjusting part comprises a first protruding part protruding towards the side wall of the first groove.

[0013] In the technical scheme provided by the embodiments of the present application, the first height adjusting part comprises a first protruding part arranged on the outer wall of the connecting part, and the first protruding part is at least partially accommodated in the spiral groove, so that when the connecting part rotates relative to the shell, the spiral groove pushes the first protruding part, so that the connecting part can move in the axial direction, thereby easily adjusting the axial height of the insulating connecting piece.

[0014] In some embodiments, the side wall of the first groove comprises a first sub-wall and a second sub-wall, the second sub-wall is arranged on the outer side of the connecting part, the first sub-wall is arranged on the outer side of the second sub-wall, the spiral groove is arranged on one side of the first sub-wall facing the connecting part, and the second sub-wall comprises a first limiting groove penetrating through the second sub-wall and extending in the axial direction of the shell; wherein the free end of the first protruding part passes through the first limiting groove to be accommodated in the spiral groove.

[0015] In the technical scheme provided by the embodiment of the application, the free end of the first protruding structure passes through the first limiting groove arranged on the second sub-wall, and in the process of movement of the first protruding part driven by the spiral groove, the first limiting groove can limit the rotation of the connecting part, so that the axial height adjustment of the insulation connecting piece can be realized by only rotating the first sub-wall without rotation of the connecting part. On the one hand, the free end of the first protruding structure passing through the first limiting groove can reduce the possibility of loosening of the connection between the connecting part and the busbar component or the fixing piece. On the other hand, such a design can also adjust the axial height of the insulation connecting piece in the connected state of the insulation connecting piece, thereby further improving the adaptability of the insulation connecting piece.

[0016] In some embodiments, the second sub-wall further comprises: a second limiting groove, the second limiting groove extending through the second sub-wall, the second limiting groove extending along the circumference of the second sub-wall and being in communication with the first limiting groove.

[0017] In the technical scheme provided by the embodiment of the application, by arranging the second limiting groove extending along the circumference of the second sub-wall and being in communication with the first limiting groove, on the one hand, the axial movement amplitude of the connecting part can be limited, and on the other hand, the second limiting groove can have a certain locking capacity for the connecting part, and before the relative rotation between the connecting part and the shell by a certain angle, the first protruding part is in the second limiting groove, thereby reducing the possibility of reduced connection reliability caused by axial movement of the connecting part.

[0018] In some embodiments, the number of the first limiting grooves is two, and the two first limiting grooves are oppositely arranged along the radial direction of the first groove; and at least one of the first limiting grooves extends to the end surface of the shell along the axial direction.

[0019] In the technical scheme provided by the embodiment of the application, by arranging the opposite first limiting grooves and making the first limiting groove on at least one side in communication with the edge of the shell, when the connecting part is assembled to the insulation connecting piece, the first protruding part on one side of the outer wall of the connecting part can be first placed into the first limiting groove on the opposite side, and then the first protruding part on the other side can be placed into the first limiting groove through the gap in the first limiting groove in communication with the side wall of the first groove, so that the connecting part can be easily assembled.

[0020] In some embodiments, the connecting part comprises: a connecting seat, the first height adjusting part is arranged on one side of the connecting seat facing the side wall of the first groove, and the end surface of the connecting seat away from the bottom wall of the first groove is provided with a second groove; an insert, the insert is embedded in the second groove, and the insert is connected to the busbar component or the fixing piece.

[0021] In the technical scheme provided in the embodiments of the present application, the connecting part is provided as an insert and a connecting seat, and the connecting seat and the insert are matched to bear the torsion, so that even when the connecting part bears a large torsion, the insert and the connecting seat will first bear the torsion, so that the structure of the shell can bear a smaller stress, and the structure of the insulating connecting piece is beneficial to be maintained.

[0022] In some embodiments, the first height adjusting part comprises a threaded tooth matched with the helical groove.

[0023] In the technical scheme provided in the embodiments of the present application, the first height adjusting part comprises a threaded tooth, which is matched with the helical groove. On the one hand, the matching of the threaded tooth and the helical groove is more firm, and the connecting part is not easy to slip along the axial direction. On the other hand, the contact area of the threaded tooth and the helical groove is large, heat can be efficiently transferred from the current collecting component to the insulating connecting piece, and further to the fixing piece, so as to alleviate the problem of overheating of the current collecting component, and further to improve the reliability of the battery device.

[0024] In some embodiments, the tooth profile of the threaded tooth is an asymmetric trapezoid or an asymmetric triangle.

[0025] In the technical scheme provided in the embodiments of the present application, the first height adjusting part comprises a threaded tooth arranged on the outer wall of the connecting part, the second height adjusting part comprises a helical groove arranged on the inner wall of the adjusting sleeve, and the tooth profile of the threaded tooth is an asymmetric trapezoid or an asymmetric triangle. The height of the insulating connecting piece can be adjusted by rotating between the connecting part and the side wall of the first groove, and the height of the insulating connecting piece can be self-locked, so as to improve the reliability of the electrical connection of the battery device.

[0026] In some embodiments, the pitch of the threaded tooth decreases along the direction of the opening of the first groove.

[0027] In the technical scheme provided in the embodiments of the present application, the pitch of the threaded tooth decreases along the direction of the opening of the first groove. On the one hand, the closer the connecting part is to the bottom of the first groove, the more stable the connection between the connecting part and the shell, which is beneficial to improve the self-locking ability of the threaded matching. On the other hand, the farther the connecting part is from the bottom of the first groove, the greater the distance of the connecting part moving along the axial direction in one rotation, which is beneficial to the effect of height adjustment.

[0028] In some embodiments, the side wall of the first groove comprises a reinforcing wall sleeved on the outer side of the connecting part; wherein the outer side of the reinforcing wall is provided with a plurality of first protruding structures distributed along the axial direction, and the threads of the surfaces of the plurality of first protruding structures away from the connecting part are provided with threads; wherein the rotation directions of the threads of at least two first protruding structures are opposite.

[0029] In the technical scheme provided by the embodiment of the present application, the side wall of the first groove comprises a reinforcing wall, the reinforcing wall is in threaded connection with the connecting part, the reinforcing wall directly bears the torsion generated by rotation, the outer side of the reinforcing wall is provided with threads in the opposite direction, so that the structure of the shell can bear smaller stress, and the structure of the insulation connecting part is beneficial to be maintained.

[0030] In some embodiments, the connecting part at one end is provided with a third groove away from the side of the bottom wall of the first groove, and the side wall of the third groove is provided with internal threads; the connecting part at the other end is provided with a second protruding part protruding away from the bottom wall of the first groove, and the outer wall of the second protruding part is provided with external threads; wherein the internal threads and the external threads are matched.

[0031] In the technical scheme provided by the embodiment of the present application, the connecting parts at the two ends of the insulation connecting part are respectively provided with a third groove with internal threads and a second protruding part with external threads, so that the insulation connecting parts can be connected with each other, and insulation connecting parts of different heights can be assembled, and the support and switching of the current collecting component under different height differences can be adapted.

[0032] In some embodiments, the base material of the shell is an insulating and heat-conducting material.

[0033] In the technical scheme provided by the embodiment of the present application, the base material of the shell is an insulating and heat-conducting material, the connecting part transmits heat from the current collecting component to the shell through direct or indirect contact, and further transmits heat to the fixing part, so that the current collecting component can be assisted in heat dissipation, and the stability of the battery device can be improved.

[0034] In some embodiments, part between the shell and the connecting part is filled with a heat-conducting medium.

[0035] In some embodiments, the connecting part comprises: a cavity, the cavity is filled with a heat-conducting medium; and a heat-conducting port, the heat-conducting port is arranged on the bottom wall of the first groove of the connecting part, and the heat-conducting port is in communication with the cavity.

[0036] In some embodiments, the part of the shell between the two first grooves is provided with a plurality of third protruding parts, the plurality of third protruding parts protrude radially towards the shell, and the side of the plurality of third protruding parts away from the shell is a plane.

[0037] In a second aspect, an insulation connecting part is provided, which is used in a high-voltage box comprising a current collecting component and a fixing part, and comprises a shell, a connecting part and a height adjusting assembly. The shell is provided with a first groove on the end face in the axial direction. The connecting part is connected with the side wall of the first groove, and is used to connect the current collecting component or the fixing part. The height adjusting assembly is accommodated in the first groove, and is used to adjust the axial height of the insulation connecting part through the connecting part.

[0038] In a third aspect, a power consuming device is provided, the power consuming device comprising the battery device according to any one of the implementations of the first aspect, wherein the battery device is configured to provide electric energy.

[0039] In some embodiments, the power consuming device is a vehicle, a ship or a spacecraft. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 Fig. 1 shows a structural schematic diagram of a vehicle according to an embodiment of the present application;

[0041] Figure 2 Fig. 2 shows a partial structural schematic diagram of a battery device according to an embodiment of the present application;

[0042] Figure 3 Fig. 3 shows a top view schematic diagram of a battery device according to an embodiment of the present application;

[0043] Figure 4 Fig. 4 shows a perspective schematic diagram of a high-voltage box according to an embodiment of the present application;

[0044] Figure 5 Fig. 5 shows a perspective schematic diagram of an insulation connecting piece in a contracted state according to an embodiment of the present application;

[0045] Figure 6 Fig. 6 shows a perspective schematic diagram of an insulation connecting piece in an extended state according to an embodiment of the present application;

[0046] Figure 7 Fig. 7 shows a partial cross-sectional schematic diagram of an insulation connecting piece according to an embodiment of the present application;

[0047] Figure 8 Fig. 8 shows a perspective schematic diagram of an insulation connecting piece in a contracted state according to another embodiment of the present application;

[0048] Figure 9 Fig. 9 shows a perspective schematic diagram of an insulation connecting piece in an extended state according to another embodiment of the present application;

[0049] Figure 10 Fig. 10 shows a partial cross-sectional schematic diagram of an insulation connecting piece according to another embodiment of the present application;

[0050] Figure 11 Fig. 11 shows a perspective schematic diagram of an insulation connecting piece in an extended state according to another embodiment of the present application;

[0051] Figure 12 Fig. 12 shows a partial cross-sectional schematic diagram of an insulation connecting piece in a contracted state according to another embodiment of the present application;

[0052] Figure 13An elongated state partial cross-sectional view of the insulation connector is shown according to another embodiment of the present application;

[0053] Figure 14 An exploded view of the insulation connector is shown according to another embodiment of the present application;

[0054] Figure 15 A perspective view of the insulation connector is shown according to another embodiment of the present application;

[0055] Figure 16 A partial cross-sectional view of the insulation connector is shown according to another embodiment of the present application;

[0056] Figure 17 A partial exploded view of the insulation connector is shown according to another embodiment of the present application;

[0057] Figure 18 A cross-sectional view of the insulation connector is shown according to another embodiment of the present application;

[0058] Figure 19 A cross-sectional view of the insulation connector is shown according to another embodiment of the present application;

[0059] Figure 20 An assembly view of the insulation connector is shown according to another embodiment of the present application;

[0060] Figure 21 Another possible view of the insulation connector is shown according to another embodiment of the present application;

[0061] Figure 22 A cross-sectional view of the insulation connector is shown according to another embodiment of the present application.

[0062] Reference signs:

[0063] 1 - vehicle; 10 - battery device; 11 - box; 20 - battery cell; 30 - controller; 40 - motor; 101 - high voltage box; 111 - first box part; 112 - second box part; 200 - insulation connector; 1011 - confluence member; 1012 - fixing member; 210 - housing; 211 - first recess; 220 - connecting part; 230 - height adjustment assembly; 231 - first height adjustment part; 232 - second height adjustment part; 2311 - first protruding part; 2321 - helical groove; 2121 - first sub wall; 2122 - second sub wall; 233 - first limiting groove; 234 - second limiting groove; 221 - connecting seat; 222 - insert; 2211 - second recess; 2123 - reinforcing wall; 2312 - screw thread; 2124 - first protruding structure; 225 - second protruding part; 223 - third recess; 224 - internal thread; 226 - external thread; 2101 - heat conduction cavity; 228 - cavity; 229 - heat conduction opening; 213 - third protruding part;

[0064] In the drawings, the drawings are not drawn according to the actual proportion. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be described below with reference to the drawings.

[0066] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings. Obviously, the described embodiments are some embodiments of the present application, not all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0067] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" in the specification and claims of the present application and their any variants are intended to cover the non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0068] Reference to an "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments. It is expressly understood that the embodiments described in this application can be combined with each other in their various permutations and combinations.

[0069] In the description of the application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0070] In this application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0071] In the embodiments of the application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are only exemplary and should not constitute any limitation on the application.

[0072] "Multiple" appearing in this application means more than two (including two), and similarly, "multiple groups" means more than two groups (including two groups), and "multiple pieces" means more than two pieces (including two pieces).

[0073] If not specifically stated, all embodiments and optional embodiments of the application can be combined with each other to form new technical solutions.

[0074] In the embodiments of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0075] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The embodiments of the application are not limited in this regard.

[0076] The battery device mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection through a busbar component.

[0077] In some embodiments, the battery device can be a battery pack including a box and one or more battery cell assemblies housed in the box.

[0078] As an example, the battery cell assembly can also be housed in the box by directly fixing the plurality of battery cells to the box.

[0079] In some embodiments, the box can be part of the chassis structure of a vehicle. For example, part of the box can be at least part of the floor of the vehicle, or part of the box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0080] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships, and spacecraft, such as aircraft, rockets, space shuttles, and spacecraft.

[0081] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system of hydroelectric, thermal, wind and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0082] The battery device is usually provided with a high-voltage box, which plays a role of distributing high-voltage direct current of the battery device, detecting voltage and current of the battery device, etc. The busbar components of each interface in the high-voltage box are usually connected with the fixing member through the insulating connecting member. However, the current insulating connecting member has the problems of non-uniform processing model, which leads to the increase of the cost of production, assembly and maintenance of the battery device and the problems of too many attached components occupying a large volume in the high-voltage box, etc., resulting in the performance decline of the battery device.

[0083] Therefore, how to improve the performance of the battery device becomes a problem to be solved.

[0084] The battery device provided by the embodiment of the application comprises a high-voltage box, and the high-voltage box comprises a busbar component and a fixing component. The battery device further comprises an insulating connecting component, and the insulating connecting component comprises a shell, a connecting component and a height adjusting assembly. The shell is provided with a first groove in an axial end face. The connecting component is connected with a side wall of the first groove, and the connecting component is used for connecting the busbar component or the fixing component. The height adjusting assembly is accommodated in the first groove, and the height adjusting assembly is used for adjusting an axial height of the insulating connecting component through the connecting component.

[0085] In the technical scheme provided by the embodiment of the application, the axial height of the insulating connecting component is adjusted by the height adjusting assembly accommodated in the first groove of the shell. Since no additional height adjusting component needs to be attached, the space occupied is small, which meets the requirement of the energy density of the battery device and can improve the energy density of the battery device. Moreover, since the axial height is adjustable, the insulating connecting component can be compatible with high-voltage boxes of various models, and the processing of the insulating connecting component and the high-voltage box is simpler, thereby saving the manufacturing cost of the battery device.

[0086] The technical scheme described in the embodiment of the application is applicable to various electric devices using the battery device.

[0087] The electric device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy and an electric tool, etc. 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 automobile, a hybrid electric automobile or a range extended automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, for example, a game machine, an electric automobile toy, an electric ship toy and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator and an electric planer, etc. The embodiment of the application does not specially limit the above electric devices.

[0088] The following embodiments take the vehicle as an example for convenience of description.

[0089] For example, Figure 1A structural schematic diagram of a vehicle 1 is shown. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The vehicle 1 can be provided with a motor 40, a controller 30 and a battery device 10. The controller 30 is used to control the power supply of the motor 40 by the battery device 10. For example, the battery device 10 can be arranged at the bottom, the front or the rear of the vehicle 1. The battery device 10 can be used for power supply of the vehicle 1. For example, the battery device 10 can be used as an operating power source of the vehicle 1, and can be used for the circuit system of the vehicle 1, for example, for the power demand of the vehicle 1 during starting, navigation and operation. In another embodiment of the present application, the battery device 10 can not only be used as an operating power source of the vehicle 1, but also be used as a driving power source of the vehicle 1, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0090] For example, Figure 2 A partial structural schematic diagram of the battery device 10 is shown. As shown in Figure 2 The battery device 10 can include a plurality of battery monomers 20 to meet different power requirements. The shape of the battery monomer 20 can be set according to actual application. For example, the battery monomer 20 can be a cylinder as shown in Figure 2 or can be a cuboid as shown in Figure 2 or other shapes, and the embodiments of the present application are not limited thereto.

[0091] It should be understood that, as shown in Figure 2 The battery device 10 can also include a box body 11, which can be used to accommodate a plurality of battery monomers 20. The box body 11 is a hollow structure, and the plurality of battery monomers 20 are accommodated in the box body 11. The box body 11 can include two parts, which are referred to as a first box body part 111 and a second box body part 112, respectively. The first box body part 111 and the second box body part 112 are buckled together. The shape of the first box body part 111 and the second box body part 112 can be determined according to the shape of the components accommodated therein, for example, according to the shape of the combination of the plurality of battery monomers 20 accommodated therein. At least one of the first box body part 111 and the second box body part 112 has an opening. For example, as shown in Figure 2As shown, the first box body part 111 and the second box body part 112 can each be a hollow cuboid and each have one face as an open face, the opening of the first box body part 111 and the opening of the second box body part 112 are oppositely arranged, and the first box body part 111 and the second box body part 112 are mutually buckled to form a box 11 having a closed cavity, which can be used to accommodate a plurality of battery monomers 20. The plurality of battery monomers 20 are placed in the box 11 formed by buckling the first box body part 111 and the second box body part 112 after being combined in parallel or in series or in a hybrid combination.

[0092] For another example, unlike the above-mentioned examples, the first box body part 111 and the second box body part 112 can be combined in a different way. Figure 2 As shown, only one of the first box body part 111 and the second box body part 112 can be a hollow cuboid having an opening, and the other can be a plate to cover the opening. Taking the second box body part 112 as a hollow cuboid having an opening and the first box body part 111 as a plate as an example, the first box body part 111 covers the opening of the second box body part 112 to form a box 11 having a closed cavity, which can be used to accommodate a plurality of battery monomers 20.

[0093] In combination with the above-mentioned examples, Figure 3 And Figure 4 The high-voltage box 101 provided by the embodiments of the present application is described.

[0094] Figure 3 A top view of the battery device 10 provided by an embodiment of the present application is shown. Figure 4 A perspective view of the high-voltage box 101 of an embodiment of the present application is shown.

[0095] As shown, the battery device 10 can include a high-voltage box 101, the battery device 10 is electrically connected to the power consumption system of the power consumption device through the high-voltage box 101, and the high-voltage box 101 distributes the output power of the battery device 10.

[0096] The embodiments of the present application exemplarily show that the high-voltage box 101 is arranged in the box 11 of the battery device 10, but the embodiments of the present application are not limited thereto, and the high-voltage box 101 can also be arranged outside the box 11 of the battery device 10, and the high-voltage box 101 can have an independent packaging structure, such as a cover body.

[0097] The high-voltage box 101 can include a relay, and during the charging and discharging of the battery device 10, the connection and disconnection between the battery device 10 and the external power consumption device can be realized by controlling the closing and opening of the relay, thereby realizing overcurrent, overvoltage and undervoltage protection.

[0098] In order to improve the energy density of the battery device 10, the volume occupied by the high-voltage box 101 is usually small, and the volume of the internal components of the high-voltage box 101 is also usually as small as possible.

[0099] The high-voltage box 101 is provided with a busbar 1011, and the high-voltage box 101 can perform high-voltage distribution on the electric energy of the battery device 10. The busbar 1011 is connected to the electrode terminals of the battery monomer 20 and the output terminals of the battery device 10, but the busbar 1011 needs to be connected to interfaces with different heights, and different height insulation connectors 200 can be used to support the busbar 1011.

[0100] For example, the busbar 1011 can be a copper bar, but the embodiments of the present application are not limited thereto.

[0101] The insulation connector 200 can insulate the busbar 1011 and the fixing member 1012. For example, the fixing member 1012 can be a bottom plate of the high-voltage box 101 or other components for fixing the busbar 1011. The insulation connector 200 insulates the busbar 1011 and the fixing member 1012, and provides support for the busbar 1011, thereby improving the reliability of the electrical connection or switching of the busbar 1011.

[0102] In combination Figures 5 to 7 The insulation connector 200 provided by an embodiment of the present application is described.

[0103] Figure 5 A three-dimensional schematic diagram of the insulation connector 200 provided by an embodiment of the present application in a contracted state is shown; Figure 6 A three-dimensional schematic diagram of the insulation connector 200 provided by an embodiment of the present application in an extended state is shown; Figure 7 A partial cross-sectional schematic diagram of the insulation connector 200 provided by an embodiment of the present application is shown.

[0104] The insulation connector 200 provided by an embodiment of the present application is used in a high-voltage box 101, and includes a housing 210, a connecting portion 220, and a height adjusting assembly 230. The housing 210 is provided with a first groove 211 on the end face in the axial direction. The connecting portion 220 is connected to the side wall of the first groove 211, and is used to connect the busbar 1011 or the fixing member 1012. The height adjusting assembly 230 is accommodated in the first groove 211, and is used to adjust the axial height of the insulation connector 200 through the connecting portion 220.

[0105] The fixing member 1012 can be connected to the shell of the high-voltage box 101 or the box body 11 of the battery device 10, so as to conduct the heat of the busbar 1011 to the external environment.

[0106] The first groove 211 can be arranged on one side end surface of the shell 210 in the axial direction, or can be arranged on both side end surfaces of the shell 210 in the axial direction, which is not limited in the embodiments of the present application.

[0107] The two side end surfaces of the shell 210 in the axial direction can be understood as two end surfaces of the shell 210 arranged opposite in the axial direction.

[0108] The axial direction of the shell 210 can also be understood as the height direction of the insulation connecting piece 200. In the drawings, the Z direction is taken as an example of the axial direction of the shell 210, but the embodiments of the present application are not limited thereto.

[0109] The axial direction of the shell 210 can be considered as the direction of the shell 210 connecting the busbar component 1011 and the fixing component 1012 in the high-voltage box 101, or the extension direction of the length of the shell 210. In the drawings, the Z direction is taken as an example of the axial direction of the shell 210, but the embodiments of the present application are not limited thereto.

[0110] The insulation connecting piece 200 can also be called an insulation column, and the name of the insulation connecting piece 200 is not limited in the embodiments of the present application.

[0111] The shape of the first groove 211 is not limited, and in the drawings, the first groove 211 is taken as an example of a cylindrical shape, but the first groove 211 can also be other shapes, for example, the first groove 211 can also be a prism, and the embodiments of the present application are not limited thereto.

[0112] In addition, since the insulation connecting piece 200 needs to realize the insulation connection of the busbar component 1011 and the fixing component 1012, in the case of direct connection of the insulation connecting piece 200 with the busbar component 1011 or the fixing component 1012, the shell 210 of the insulation connecting piece 200 directly bears stress, which causes the insulation connecting piece 200 to be easily damaged, thereby possibly affecting the reliability of the battery device 10.

[0113] By connecting the busbar component 1011 and the fixing component 1012 through the connecting part 220, the connecting part 220 is connected with the side wall of the first groove 211, which can relieve the stress at the connection through the connecting part 220. Even if a larger stress is generated during the assembly and use of the insulation connecting piece 200, the connecting part 220 can absorb part of the stress, thereby protecting the shell 210 of the insulation connecting piece 200.

[0114] In the technical scheme provided by the embodiment of the application, the axial height of the insulation connecting piece 200 is adjusted by the height adjusting assembly 230 accommodated in the first groove 211 of the shell 210. Since no additional height adjusting component needs to be attached to the insulation connecting piece, the space occupied is small, which meets the requirement of the energy density of the battery device 10 and can improve the energy density of the battery device 10. When the insulation connecting high-voltage box 101 has interfaces with different height differences, the height of the insulation connecting piece 200 can be adjusted to meet the connection requirement of different height differences, and no additional insulation connecting pieces of multiple types need to be produced for the high-voltage box. Moreover, since the axial height is adjustable, the insulation connecting piece 200 can be compatible with multiple types of high-voltage boxes 101. The insulation connecting piece 200 and the high-voltage box 101 are simpler to process, thereby saving the manufacturing cost of the battery device 10.

[0115] In some possible embodiments, the high-voltage box 101 includes a busbar component 1011 and a fixing component 1012, the shell 210 is provided with the first groove 211 on the opposite two end faces in the axial direction, and the connecting part 220 at each end is connected to the busbar component 1011 and the fixing component 1012, respectively.

[0116] The connecting part 220 and the busbar component 1011 or the fixing component 1012 can be directly connected or indirectly connected. For example, when multiple insulation connecting pieces 200 are connected end to end, the insulation connecting piece 200 located in the middle position is connected to the busbar component 1011 through other insulation connecting pieces 200 at one end facing the busbar component 1011 and connected to the busbar component 1011 through other insulation connecting pieces 200 at one end facing the fixing component 1012.

[0117] In the case that the shell 210 is provided with the first groove 211 and the connecting part 220 at both ends, the connecting part 220 connected to the busbar component 1011 and the fixing component 1012 can be adjusted in height, thereby being able to adapt to the height difference of the connection interface in the high-voltage box 101 in a larger range.

[0118] In the technical scheme provided by the embodiment of the application, the first groove 211 is arranged on the two side end faces of the shell 210 to accommodate the connecting part 220, and the connecting part 220 is connected to the busbar component 1011 and the fixing component 1012, so that the insulation connecting piece 200 has a larger height adjusting range, thereby being able to increase the adaptability of the insulation connecting piece 200, which is more suitable for connecting interfaces with different height ranges and is less likely to be broken or loose, and thus the stability of the battery device 10 can be improved.

[0119] In some possible embodiments, the height adjustment assembly 230 includes a first height adjustment part 231 and a second height adjustment part 232. The first height adjustment part 231 is arranged on one side of the outer wall of the connecting part 220 facing the side wall of the first recess 211. The second height adjustment part 232 is arranged on one side of the inner wall of the first recess 211 facing the connecting part 220. The first height adjustment part 231 cooperates with the second height adjustment part 232 to adjust the axial height of the insulation connecting piece 200.

[0120] The outer wall of the connecting part 220 is provided with the first height adjustment part 231, and the inner wall of the first recess 211 is provided with the second height adjustment part 232. The axial height of the insulation connecting piece 200 is adjusted through cooperation of the first height adjustment part 231 and the second height adjustment part 232, so that the insulation connecting piece 200 can be adapted to the connection of interfaces with different height differences. At the same time, since the first height adjustment part 231 and the second height adjustment part 232 are arranged on the outer wall of the connecting part 220 and the inner wall of the first recess 211 respectively, the volume of the insulation connecting piece 200 is not additionally increased, the volume occupation of the insulation connecting piece 200 can be reduced, and thus the energy density of the battery device 10 can be improved.

[0121] In the embodiments of the present application, the first height adjustment part 231 includes a first protruding part 2311 arranged on the outer wall of the connecting part 220, and the second height adjustment part 232 includes a helical groove 2321 arranged on the inner wall of the first recess 211, but the embodiments of the present application are not limited thereto. For example, the first height adjustment part 231 and the second height adjustment part 232 can both be threads. For another example, the first height adjustment part 231 can include a protruding structure, and the second height adjustment part 232 can include a I-shaped groove arranged on the side wall of the first recess 211, and the axial height of the insulation connecting piece 200 is adjusted through movement of the protruding structure in the I-shaped groove.

[0122] For another example, the protruding structure can be arranged on the side wall of the first recess 211, and the helical groove 2321 or the I-shaped groove can be arranged on the outer wall of the connecting part 220, but the embodiments of the present application are not limited thereto.

[0123] In the technical scheme provided in the embodiment of the present application, the outer wall of the connecting part 220 is provided with the first height adjusting part 231, the inner wall of the first groove 211 is provided with the second height adjusting part 232, and the axial height of the insulation connecting piece 200 is adjusted through cooperation of the two, so that the insulation connecting piece 200 can be adapted to the connection of interfaces with different height differences. At the same time, since the first height adjusting part 231 and the second height adjusting part 232 are respectively arranged on the outer wall of the connecting part 220 and the inner wall of the first groove 211, the volume of the insulation connecting piece 200 is not additionally increased, the additional space occupation of the height adjusting assembly 230 can be saved, so that the volume occupation of the insulation connecting piece 200 can be reduced, which can be consistent with the small space feature of the battery device 10, and thus the energy density of the battery device 10 can be improved.

[0124] In some possible embodiments, the first groove 211 is a cylindrical groove, the second height adjusting part 232 includes a spiral groove 2321, and the first height adjusting part 231 is at least partially accommodated in the spiral groove 2321.

[0125] Since the first groove 211 is a cylindrical groove, and the spiral groove 2321 is arranged on the side wall of the first groove 211, the first height adjusting part 231 is at least partially accommodated in the spiral groove 2321, when the connecting part 220 and the side wall of the first groove 211 relatively rotate, the spiral groove 2321 and the first height adjusting part 231 accommodated therein can convert the relative rotation movement into axial movement, so that the connecting part 220 can be axially telescoped relative to the shell 210, and thus the axial height of the insulation connecting piece 200 can be more easily adjusted.

[0126] The relative rotation of the shell 210 and the connecting part 220 can be realized by rotating the connecting part 220, and the relative rotation of the shell 210 and the connecting part 220 can also be realized by rotating the shell 210. In the drawings of the embodiment of the present application, the relative rotation of the shell 210 and the connecting part 220 is realized by rotating the shell 210, but the embodiment of the present application is not limited thereto.

[0127] In the technical scheme provided in the embodiment of the present application, the second height adjusting part 232 includes a spiral groove 2321, and the first height adjusting part 231 is at least partially accommodated in the spiral groove 2321, so that the axial height of the insulation connecting piece 200 can be adjusted through the relative rotation movement between the connecting part 220 and the shell 210. Since the axial height of the insulation connecting piece 200 can be adjusted by rotation, the adjustment is relatively simple, and the insulation connecting piece 200 is not easily damaged, so that the stability of the insulation connecting piece 200 can be improved, and thus the stability of the battery device 10 can be improved.

[0128] In some possible embodiments, the first height adjusting part 231 comprises a first protruding part 2311 protruding towards the sidewall of the first groove 211.

[0129] By protruding of the first protruding part 2311 towards the sidewall of the first groove 211 and being at least partially accommodated in the helical groove 2321, the helical groove 2321 can convert the rotary motion into linear displacement by guiding the first protruding part 2311 to move along a specific trajectory. Thus, the connecting part 220 can be moved axially by means of the rotary connecting part 220, so as to adjust the axial height of the insulation connecting piece 200.

[0130] The embodiments of the present application do not limit the relative rotation manner of the connecting part 220 and the shell 210, for example, in some embodiments, the sidewall of the first groove 211 can be rotated, and the sidewall of the first groove 211 can also be rotated to make the connecting part 220 and the shell 210 relatively rotate.

[0131] In the technical scheme provided by the embodiments of the present application, the first height adjusting part 231 comprises the first protruding part 2311 arranged on the outer wall of the connecting part 220, and the first protruding part 2311 is at least partially accommodated in the helical groove 2321. When the connecting part 220 relatively rotates with respect to the shell 210, the helical groove 2321 will push the first protruding part 2311, so that the connecting part 220 can be moved axially, thereby easily adjusting the axial height of the insulation connecting piece 200.

[0132] The following will be described in combination with Figures 8 to 14 the insulation connecting piece 200 provided by another embodiment of the present application.

[0133] Figure 8 a perspective view showing the retracted state of the insulation connecting piece 200 provided by another embodiment of the present application is shown; Figure 9 a perspective view showing the extended state of the insulation connecting piece 200 provided by another embodiment of the present application is shown; Figure 10 a partial cross-sectional view of the insulation connecting piece 200 provided by another embodiment of the present application is shown; Figure 11 a perspective view showing the extended state of the insulation connecting piece 200 provided by another embodiment of the present application is shown; Figure 12 a partial cross-sectional view showing the retracted state of the insulation connecting piece 200 provided by another embodiment of the present application is shown; Figure 13 a partial cross-sectional view showing the extended state of the insulation connecting piece 200 provided by another embodiment of the present application is shown; Figure 14 an exploded view of the insulation connecting piece 200 provided by another embodiment of the present application is shown.

[0134] In some possible embodiments, the side wall of the first groove 211 comprises a first sub-wall 2121 and a second sub-wall 2122, the second sub-wall 2122 is sleeved outside the connecting part 220, the first sub-wall 2121 is arranged outside the second sub-wall 2122, the helical groove 2321 is arranged on one side of the first sub-wall 2121 facing the connecting part 220, and the second sub-wall 2122 comprises a first limiting groove 233, the first limiting groove 233 penetrates through the second sub-wall 2122 and extends in the axial direction of the shell 210; wherein the free end of the first protruding part 2311 passes through the first limiting groove 233 and is accommodated in the helical groove 2321.

[0135] In the case that the connecting part 220 and the shell 210 are relatively rotated, the connecting part 220 can be rotated, and thus the reliability of the connection between the connecting part 220 and the bus component 1011 or the fixing part 1012 can be affected.

[0136] The free end of the first protruding part 2311 passes through the first limiting groove 233 and is accommodated in the helical groove 2321, and in the process that the helical groove 2321 drives the first protruding part 2311, the first limiting groove 233 can limit the rotation of the connecting part 220, and direct the axial linear movement of the connecting part 220.

[0137] In the technical scheme provided by the embodiments of the present application, the free end of the first protruding structure 2124 passes through the first limiting groove 233 arranged on the second sub-wall 2122, and in the process that the helical groove 2321 drives the first protruding part 2311, the first limiting groove 233 can limit the rotation of the connecting part 220, so that the axial height adjustment of the insulating connecting part 200 can be realized by only rotating the first sub-wall 2121 without rotating the connecting part 220. On the one hand, the free end of the first protruding structure 2124 passing through the first limiting groove 233 can reduce the possibility of loosening of the connection between the connecting part 220 and the bus component 1011 or the fixing part 1012. On the other hand, such a design can also adjust the axial height of the insulating connecting part 200 in the connected state of the insulating connecting part 200, so as to further improve the adaptability of the insulating connecting part 200.

[0138] In some possible embodiments, the second sub-wall 2122 further comprises a second limiting groove 234, the second limiting groove 234 penetrates through the second sub-wall 2122, the second limiting groove 234 extends in the circumferential direction of the second sub-wall 2122, and the second limiting groove 234 is in communication with the first limiting groove 233.

[0139] The circumferential direction of the second sub-wall 2122 can be understood as the surrounding direction of the second sub-wall 2122. That is, the circumferential direction of the cross section of the second sub-wall 2122.

[0140] The number of the second limiting grooves 234 can be one or multiple. Exemplarily, the number of the second limiting grooves 234 is two in the embodiment of the application, but the embodiment of the application is not limited thereto.

[0141] In the process that the first protruding part 2311 is driven by the spiral groove 2321 and slides in the first limiting groove 233, when the axial height of the insulating connecting piece 200 meets the preset height, the height of the insulating connecting piece 200 at this time needs to be fixed. By setting the second limiting groove 234 extending along the second sub-wall 2122 in the circumferential direction and communicating with the first limiting groove 233, when the first protruding part 2311 moves to the position where the first limiting groove 233 communicates with the second limiting groove 234, the further relative rotation of the connecting part 220 and the shell 210 can make the first protruding part 2311 enter the second limiting groove 234, thereby limiting the continuous movement of the connecting part 220. When it is needed to contract the insulating connecting piece 200, the relative rotation of the connecting part 220 and the shell 210 in the opposite direction can be performed. After a certain degree of rotation, the first protruding part 2311 can re-enter the first limiting groove 233. Such a design can also make the first protruding part 2311 entering the second limiting groove 234 need to rotate a certain angle before entering the first limiting groove 233, thereby making the insulating connecting piece 200 have a certain self-locking ability.

[0142] In the technical scheme provided by the embodiment of the application, by setting the second limiting groove 234 extending along the second sub-wall 2122 in the circumferential direction and communicating with the first limiting groove 233, on the one hand, the axial movement amplitude of the connecting part 220 can be limited, and on the other hand, the second limiting groove 234 can have a certain locking ability for the connecting part 220. Before the relative rotation between the connecting part 220 and the shell 210 by a certain angle, the first protruding part 2311 is in the second limiting groove 234, which can reduce the possibility of reducing the connection reliability caused by the axial movement of the connecting part 220.

[0143] In some possible embodiments, the number of the first limiting grooves 233 is two, and the two first limiting grooves 233 are oppositely arranged along the radial direction of the first recess 211.

[0144] The radial direction of the first recess 211 can be understood as the direction of the diameter of the first recess 211.

[0145] One end of the at least one first limiting groove 233 extends to the axial end face of the shell 210, thereby generating a notch at the top end of the side wall of the first recess 211, and the two first limiting grooves 233 are oppositely arranged along the radial direction, so that when the connecting part 220 is assembled, the first protruding part 2311 can be easily put into the first limiting groove 233.

[0146] In the technical scheme provided by the embodiment of the present application, the opposite first limiting grooves 233 are arranged, and at least one side of the first limiting grooves 233 is communicated with the edge of the shell 210. When the connecting part 220 is assembled to the insulating connecting piece 200, the first protruding part 2311 on the outer wall side of the connecting part 220 is first placed into the first limiting groove 233 on the opposite side, and then the first protruding part 2311 on the other side is placed into the first limiting groove 233 through the gap of the first limiting groove 233 communicated with the side wall of the first recess 211, so that the connecting part 220 can be easily assembled.

[0147] In some possible embodiments, the connecting part 220 includes a connecting seat 221, the first height adjusting part 231 is arranged on the side wall of the connecting seat 221 facing the first recess 211, and a second recess 2211 is arranged on the end face of the connecting seat 221 away from the bottom wall of the first recess 211. The connecting part 220 further includes an embedded part 222 embedded in the second recess 2211, and the embedded part 222 is connected to the busbar component 1011 or the fixing part 1012.

[0148] Since the connecting part 220 and the side wall of the first recess 211 are matched for height adjustment through the first protruding part 2311 and the spiral groove 2321, when the connecting part 220 is connected to the busbar component 1011 or the fixing part 1012, the groove wall of the spiral groove 2321 may bear the torsion generated in the rotation process, thereby affecting the structure of the spiral groove 2321. By arranging the connecting part 220 as the embedded part 222 and the connecting seat 221, the torsion is borne through the cooperation of the connecting seat 221 and the embedded part 222. Even when the connecting part 220 bears a large torsion, the embedded part 222 and the connecting seat 221 will first bear the torsion, and the embedded part 222 and the connecting seat 221 will slip before the spiral groove 2321 bears the torsion and is damaged, thereby reducing the possibility of damage of the spiral groove 2321.

[0149] In the technical scheme provided by the embodiment of the present application, the connecting part 220 is arranged as the embedded part 222 and the connecting seat 221, and the torsion is borne through the cooperation of the connecting seat 221 and the embedded part 222. Even when the connecting part 220 bears a large torsion, the embedded part 222 and the connecting seat 221 will first bear the torsion, so that the structure of the shell 210 can bear a smaller stress, which is conducive to maintaining the structure of the insulating connecting piece 200.

[0150] In combination Figures 15 to 17 The insulating connecting piece 200 provided by the embodiment of the present application is described.

[0151] Figure 15 A perspective view of the insulating connecting piece 200 provided by the embodiment of the present application is shown; Figure 16A partial cross-sectional view of the insulation connecting piece 200 is shown in the embodiment of the present application. Figure 17 A partial exploded view of the insulation connecting piece 200 is shown in the embodiment of the present application.

[0152] In some possible embodiments, the first height adjusting part 231 comprises a threaded tooth 2312 which is adapted to the helical groove 2321.

[0153] In the technical scheme provided by the embodiment of the present application, the first height adjusting part 231 comprises a threaded tooth 2312 which is adapted to the helical groove 2321. On the one hand, the threaded tooth 2312 and the helical groove 2321 are more firmly adapted to each other, and the connecting part 220 is less likely to slide in the axial direction. On the other hand, the contact area between the threaded tooth 2312 and the helical groove 2321 is large, and heat can be efficiently transferred from the current collecting component 1011 to the insulation connecting piece 200 and further to the fixing part 1012, thereby alleviating the problem of overheating of the current collecting component 1011 and improving the reliability of the battery device 10.

[0154] In some possible embodiments, the tooth shape of the threaded tooth 2312 is an asymmetric trapezoid or an asymmetric triangle.

[0155] The tooth shape of the threaded tooth 2312 is an asymmetric trapezoid or an asymmetric triangle. When the connecting part 220 is subjected to a force in the axial direction of the shell 210, the asymmetric trapezoidal or asymmetric triangular tooth shape can achieve self-locking, thereby reducing the possibility of sliding of the connecting part 220 due to external force.

[0156] In the technical scheme provided by the embodiment of the present application, the first height adjusting part 231 comprises a threaded tooth 2312 arranged on the outer wall of the connecting part 220, the second height adjusting part 232 comprises a helical groove 2321 arranged on the inner wall of the adjusting sleeve, and the tooth shape of the threaded tooth 2312 is an asymmetric trapezoid or an asymmetric triangle. The height of the insulation connecting piece 200 can be adjusted in a rotating manner between the connecting part 220 and the side wall of the first groove 211, and the height of the insulation connecting piece 200 can be self-locked, thereby improving the reliability of the electrical connection of the battery device 10.

[0157] In some possible embodiments, the pitch of the threaded tooth 2312 decreases in the direction in which the first groove 211 opens.

[0158] In the technical scheme provided in the embodiment of the present application, the pitch of the thread tooth 2312 decreases along the direction in which the first groove 211 opens. On the one hand, the closer the connecting part 220 is to the bottom of the first groove 211, the more stable the connection between the connecting part 220 and the shell 210, which is conducive to improving the self-locking ability of the threaded connection. On the other hand, the farther the connecting part 220 is from the bottom of the first groove 211, the greater the distance that the connecting part 220 moves along the axial direction in one rotation, which is conducive to the height adjustment effect.

[0159] In some possible embodiments, the side wall of the first groove 211 comprises a reinforcing wall 2123, which is sleeved on the outer side of the connecting part 220. The outer side of the reinforcing wall 2123 is provided with a plurality of first protruding structures 2124 distributed at intervals along the axial direction, and the threads of the plurality of first protruding structures 2124 are arranged away from the surface of the connecting part 220. At least two of the threads of the first protruding structures 2124 are in opposite directions.

[0160] Since the shell 210 needs to have the function of insulating connection, the material of the shell 210 is usually an insulating material. The direct force on the shell 210 may affect the structure of the shell 210, thereby affecting the insulation performance of the insulating connector 200.

[0161] The reinforcing wall 2123 is provided with a plurality of first protruding structures 2124 on the outer side, and the threads of the plurality of first protruding structures 2124 are arranged away from the surface of the connecting part 220 in opposite directions. When the connecting part 220 bears a torsion, the threads on the outer side of the reinforcing wall 2123 in opposite directions can provide certain support for the connecting part 220. On the other hand, when the connecting part 220 bears an excessive torsion, the threads can provide certain buffering, thereby playing a role in protecting the structure of the shell 210.

[0162] In the technical scheme provided in the embodiment of the present application, the side wall of the first groove 211 comprises a reinforcing wall 2123, which directly bears the torsion generated by rotation through the threaded connection with the connecting part 220. The outer side of the reinforcing wall 2123 is provided with threads in opposite directions, so that the structure of the shell 210 can bear a smaller stress, which is conducive to maintaining the structure of the insulating connector 200.

[0163] In combination with Figures 18 to 21 Another insulating connector 200 provided in the present application is described.

[0164] Figure 18 A cross-sectional view of the insulating connector 200 provided in another embodiment of the present application is shown; Figure 19 A cross-sectional view of the insulating connector 200 provided in another embodiment of the present application is shown; Figure 20 An assembly view of the insulating connector 200 provided in another embodiment of the present application is shown;Figure 21 Another possible schematic view of the insulating connecting piece 200 is provided in an embodiment of the present application.

[0165] In some possible embodiments, the connecting part 220 at one end is provided with a third groove 223 away from the side of the bottom wall of the first groove 211, and the side wall of the third groove 223 is provided with an inner thread 224; the connecting part 220 at the other end is provided with a second protruding part 225 protruding away from the bottom wall of the first groove 211, and the outer wall of the second protruding part 225 is provided with an outer thread 226; wherein the inner thread 224 and the outer thread 226 are adapted.

[0166] In the technical solution provided in the embodiments of the present application, the connecting part 220 at each end of the insulating connecting piece 200 is respectively provided with the third groove 223 with the inner thread 224 and the second protruding part 225 with the outer thread 226, so that the insulating connecting pieces 200 can be connected to each other, and insulating connecting pieces 200 of different heights can be assembled, thereby being able to support and adapt the busbar component 1011 under different height differences.

[0167] The height of the insulating connecting piece 200 can be a non-fixed value, for example, different insulating connecting pieces 200 can be of different heights.

[0168] In some possible embodiments, the insulating connecting pieces 200 can be connected in cooperation between a plurality of insulating connecting pieces 200, for example, as shown in Figure 21 The connecting part 220 at each end of the insulating connecting piece 200 is provided with the third groove 223, and the side wall of the third groove 223 is provided with the inner thread 224. Correspondingly, the other insulating connecting piece 200 can be an insulating connecting piece 200 provided with the outer thread 226 at each end, or can be provided with the second protruding part 225 at one end and the third groove 223 at the other end, and the embodiments of the present application are not limited thereto.

[0169] Further, referring to Figure 18 and Figure 19 The connecting part 220 can be connected with the shell 210 through the height adjusting assembly 230, or the connecting part 220 can be fixedly connected with the shell 210. At this time, since the connecting parts 220 of different single insulating connecting pieces 200 can adjust the axial height of the entire insulating connecting piece 200 in cooperation with each other, the connecting part 220 is the height adjusting assembly 230.

[0170] In some possible embodiments, the base material of the shell 210 is an insulating and heat-conducting material.

[0171] The insulating and heat-conducting material can be, for example, aluminum nitride, silicon nitride, aluminum oxide, silicon carbide ceramic, etc.

[0172] In the technical scheme provided by the embodiment of the application, the base material of the shell 210 is an insulating and heat-conducting material, the connecting part 220 transmits heat from the busbar component 1011 to the shell 210 through direct or indirect contact and further transmits the heat to the fixing part 1012, so that the busbar component 1011 can be assisted in heat dissipation, and the stability of the battery device 10 can be improved.

[0173] Further, the connecting part 220 can be made of metal or ceramic material.

[0174] The metal or ceramic material has good heat-conducting performance on the basis of having certain strength. Therefore, on the one hand, the reliability of the connection of the insulating connecting part 200 can be improved, and on the other hand, the heat dissipation performance of the insulating connecting part 200 can be improved.

[0175] In some possible embodiments, a part between the shell 210 and the connecting part 220 is filled with heat-conducting medium.

[0176] Since the axial height of the insulating connecting part 200 is adjusted through the axial movement of the connecting part 220, after the connecting part 220 extends in the axial direction, the contact area of the connecting part 220 with the first groove 211 is reduced. Since the heat-conducting medium is filled between the shell 210 and the connecting part 220, on the one hand, the heat-conducting medium can effectively conduct the heat of the busbar component 1011, thereby assisting the busbar component 1011 in heat dissipation, and on the other hand, the filled heat-conducting medium increases the contact area of the connecting part 220 with the shell 210, thereby further increasing the heat dissipation amount.

[0177] In some possible embodiments, a bottom wall between the two first grooves 211 on the two sides of the shell 210 is provided with a heat-conducting cavity 2101, and the heat-conducting cavity 2101 can be filled with heat-conducting medium. In this way, the heat transmission efficiency from the bottom wall of the first groove 211 can be accelerated, thereby further assisting the busbar component 1011 in heat dissipation.

[0178] Figure 22 A cross-sectional schematic view of the insulating connecting part 200 provided by another embodiment of the application is shown.

[0179] In some possible embodiments, the connecting part 220 includes: a cavity 228, the cavity 228 being filled with heat-conducting medium; and a heat-conducting port 229, the heat-conducting port 229 being arranged on the bottom wall of the connecting part 220 facing the first groove 211, and the heat-conducting port 229 being in communication with the cavity 228.

[0180] In the case that the height of the connecting part 220 is adjustable, when the connecting part 220 protrudes out of the shell 210, the connecting part 220 is separated from the bottom wall of the first groove 211, so that the contact area between the connecting part 220 and the shell 210 is reduced, and the heat dissipation effect is poor. By setting the cavity 228 and filling the heat-conducting medium through the heat-conducting opening 229, the heat transfer area between the connecting part 220 and the shell 210 can be increased, so as to provide better auxiliary heat dissipation capacity for the busbar component 1011.

[0181] The heat-conducting medium is filled between the shell 210 and the connecting part 220, and the connecting part 220 is provided with the heat-conducting opening 229 facing the bottom wall of the first groove 211, and the heat-conducting opening 229 communicates with the cavity 228. When the connecting part 220 is assembled to the insulating connecting piece 200, the heat-conducting medium can enter the cavity 228 through the heat-conducting opening 229, so that the contact area between the heat-conducting medium and the connecting part 220 is increased, and the connecting part 220 can better transfer the heat received from the busbar component 1011, so as to improve the heat dissipation efficiency of the insulating connecting piece 200.

[0182] In some possible embodiments, the part of the shell 210 between the two first grooves 211 is provided with a plurality of third protrusions 213, the plurality of third protrusions 213 protrude radially towards the shell 210, and the side of the plurality of third protrusions 213 away from the shell 210 along the radial direction of the shell 210 is a plane.

[0183] The side of the plurality of third protrusions 213 away from the shell 210 along the radial direction of the shell 210 is a plane, which is beneficial to fixing the insulating connecting piece 200 during operation. For example, the plane of the third protrusion 213 can be used for clamping by a wrench, so as to facilitate assembly in the high-voltage box 101.

[0184] Further, the shape of the part of the shell 210 between the two first grooves 211 in the orthographic projection along the first axial direction can be a rectangle, a hexagon or an octagon.

[0185] According to some embodiments of the present application, the present application also provides a battery device 10, which comprises the insulating connecting piece 200 of any of the above solutions.

[0186] According to some embodiments of the present application, the present application also provides a power utilization device, which comprises the battery device 10 of any of the above solutions, and the battery device 10 is used to provide electric energy for the power utilization device.

[0187] The power utilization device can be a device or a system of any of the above application battery devices 10.

[0188] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; 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 description of the present application. In particular, 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 herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: A high-voltage box (101) comprising a busbar component (1011) and a fixing member (1012); An insulating connecting piece (200) comprising a shell (210), a connecting part (220), and a height adjusting assembly (230), the shell (210) is provided with a first recess (211) at each of the opposite axial end faces, the connecting part (220) is arranged in the first recess (211), the connecting part (220) is connected with the side wall of the first recess (211), and the connecting part (220) is connected with the busbar component (1011) and the fixing member (1012) respectively; The connecting part (220) comprises a connecting seat (221) and an insert (222), the connecting seat (221) is provided with a second recess (2211) at the end face away from the bottom wall of the first recess (211), the insert (222) is embedded in the second recess (2211), and the insert (222) is connected with the busbar component (1011) or the fixing member (1012); A first height adjusting part (231) is arranged at one side of the connecting seat (221) facing the side wall of the first recess (211); A second height adjusting part (232) is arranged at one side of the side wall of the first recess (211) facing the connecting part (220); The first height adjusting part (231) and the second height adjusting part (232) cooperate to adjust the axial height of the insulating connecting piece.

2. The battery device of claim 1, wherein The first recess (211) is a cylindrical recess, and the second height adjusting part (232) comprises: A spiral groove (2321), and the first height adjusting part (231) is at least partially accommodated in the spiral groove (2321).

3. The battery device of claim 2, wherein The first height adjusting part (231) comprises: A first protruding part (2311) protruding towards the side wall of the first recess (211).

4. The battery device of claim 3, wherein The side wall of the first recess (211) comprises a first sub-wall (2121) and a second sub-wall (2122), the second sub-wall (2122) is sleeved outside the connecting part (220), the first sub-wall (2121) is sleeved outside the second sub-wall (2122), the spiral groove (2321) is arranged at one side of the first sub-wall (2121) facing the connecting part (220), and the second sub-wall (2122) comprises: A first limiting groove (233) penetrating through the second sub-wall (2122) and extending along the axial direction of the shell (210); The free end of the first protruding part (2311) passes through the first limiting groove (233) to be accommodated in the spiral groove (2321).

5. The battery device of claim 4, wherein The second sub-wall (2122) further comprises: A second limiting groove (234) penetrates the second sub-wall (2122), extends along the circumference of the second sub-wall (2122), and communicates with the first limiting groove (233).

6. The battery device of claim 4, wherein The number of the first limiting grooves (233) is two, and the two first limiting grooves (233) are oppositely arranged along the radial direction of the first groove (211). At least one of the first limiting grooves (233) extends to the axial end surface of the shell (210).

7. The battery device of claim 2, wherein The first height adjusting part (231) comprises: A threaded tooth (2312) is matched with the spiral groove (2321).

8. The battery device of claim 7, wherein, The tooth profile of the threaded tooth (2312) is an asymmetric trapezoid or an asymmetric triangle.

9. The battery device of claim 7, wherein, The pitch of the threaded tooth (2312) decreases along the direction in which the first groove (211) opens.

10. The battery device of claim 7, wherein, The side wall of the first groove (211) comprises a reinforcing wall (2123) which is sleeved on the outer side of the connecting part (220). The outer side of the reinforcing wall (2123) is provided with a plurality of first protruding structures (2124) which are axially spaced apart, and the threads of the plurality of first protruding structures (2124) are arranged away from the surface of the connecting part (220). The rotation directions of the threads of at least two first protruding structures (2124) are opposite.

11. The battery device of claim 1, wherein, One end of the connecting part (220) is provided with a third groove (223) away from one side of the bottom wall of the first groove (211), and the side wall of the third groove (223) is provided with an internal thread (224); the other end of the connecting part (220) is provided with a second protruding part (225) which protrudes away from the bottom wall of the first groove (211), and the outer wall of the second protruding part (225) is provided with an external thread (226). The internal thread (224) and the external thread (226) are matched.

12. The battery device of claim 1, wherein, The base material of the shell (210) is an insulating and heat-conducting material.

13. The battery device of claim 12, wherein, The part between the shell (210) and the connecting part (220) is filled with a heat-conducting medium.

14. The battery device of claim 12, wherein, The connecting part (220) comprises: A cavity (228) is filled with a heat-conducting medium; A heat-conducting port (229) is arranged on the bottom wall of the connecting part (220) facing the first groove (211), and the heat-conducting port (229) communicates with the cavity (228).

15. The battery device of any one of claims 1 to 14, wherein, The part of the shell (210) between the two first grooves (211) is provided with a plurality of third protruding parts (213) which protrude radially towards the shell (210), and the plurality of third protruding parts (213) are flat along the side of the shell (210) away from the shell (210).

16. An insulating connector, characterized by The insulating connecting piece is used for a high-voltage box (101) which comprises a busbar component (1011) and a fixing piece (1012), and the insulating connecting piece comprises: The shell (210) is provided with first grooves (211) on two opposite axial end faces, the connecting parts (220) are arranged in the first grooves (211) at the two ends, the connecting parts (220) are connected with the side walls of the first grooves (211), and the connecting parts (220) are connected with the current collecting components (1011) and the fixing parts (1012) respectively; The connecting parts (220) comprise connecting seats (221) and inserts (222), the connecting seats (221) are provided with second grooves (2211) away from the end faces of the bottom walls of the first grooves (211), the inserts (222) are embedded in the second grooves (2211), and the inserts (222) are connected with the current collecting components (1011) or the fixing parts (1012); A first height adjusting part (231) is arranged on one side of the connecting seat (221) facing the side wall of the first groove (211); A second height adjusting part (232) is arranged on one side of the side wall of the first groove (211) facing the connecting part (220); The first height adjusting part (231) cooperates with the second height adjusting part (232) to adjust the axial height of the insulation connecting piece.

17. An electrical device, comprising: The power utilization device comprises: The battery device as claimed in any one of claims 1 to 15, wherein the battery device is used to provide electric energy.

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