Actuator, actuator assembly, motor controller, motor assembly, and vehicle

Abstract

An actuator, an actuator assembly, a motor controller, a motor assembly, and a vehicle. The actuator comprises: a housing (10), wherein the housing (10) defines an accommodating cavity, a first side wall (11) of the housing (10) is provided with a first opening (12), and the housing (10) is further provided with a through hole (13); a moving member (20); a reinforcing member (30), wherein the reinforcing member (30) is provided with a second opening (32) in communication with the first opening (12); and an explosive device (40), wherein the explosive device (40) is configured to generate an impact force upon ignition so as to drive the moving member (20) to partially extend out of the housing (10) through the through hole (13), the explosive device (40) comprises a fuse (41) and a detonator (42), one end of the fuse (41) is connected to the detonator (42), and the other end of the fuse (41) passes through the first opening (12) and the second opening (32) and extends out of the housing (10); and the orthographic projections of the reinforcing member (30) and the detonator (42) on the first side wall (11) at least partially overlap. The reinforcing member covers at least a portion of the first side wall of the actuator housing to enhance the structural strength of the first side wall, so that the first side wall is less susceptible to damage, thereby reducing the likelihood of impact forces damaging the first side wall and affecting external components.

Description

Actuator, actuator assembly, motor controller, motor assembly, and vehicle

[0001] Cross-reference to Related Applications

[0002] The present application is based on and claims priority to Chinese Patent Application No. 202411113006X, filed on August 14, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of braking, in particular to an actuator, an actuator assembly, a motor controller, a motor assembly, and a vehicle. BACKGROUND

[0004] In the related art, when the explosion element of the pyrotechnic actuator is ignited, the shell of the pyrotechnic actuator is easily damaged by the impact force of the explosion, causing the fragments of the shell to scatter, easily damaging the structure near the pyrotechnic actuator, and there is a great safety hazard.

[0005] SUMMARY

[0006] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes an actuator, which is provided with a reinforcing member, so that the reinforcing member covers at least a part of the first side wall, to enhance the structural strength of the first side wall, so that the first side wall is not easily damaged, to reduce the possibility of the first side wall being damaged by the impact force, and to reduce the possibility that the impact force will affect the external parts.

[0007] The present application also proposes an actuator assembly having the actuator.

[0008] The present application also proposes a motor controller having the actuator assembly.

[0009] The present application also proposes a motor assembly having the motor controller.

[0010] The present application also proposes a vehicle having a motor.

[0011] According to the actuator of the first aspect of the present application, the actuator comprises a housing, the housing defines a containing cavity, a first side wall of the housing is provided with a first opening in communication with the containing cavity, and the housing is further provided with a through hole in communication with the containing cavity; a moving part is arranged in the containing cavity; a reinforcing part covers at least a part of the first side wall, the reinforcing part is provided with a second opening in communication with the first opening; an explosive device is at least partially arranged in the containing cavity, the explosive device is configured to generate an impact force to push the moving part to move and make a part of the moving part to extend out of the housing through the through hole after being ignited, the explosive device comprises a fuse and an igniter, one end of the fuse is connected with the igniter, and the other end of the fuse extends out of the housing through the first opening and the second opening; and the reinforcing part and the igniter at least partially overlap in the orthographic projection of the first side wall.

[0012] According to the actuator of the present application, the reinforcing part covers at least a part of the first side wall to enhance the structural strength of the first side wall, so that the first side wall is not easily damaged, thereby reducing the possibility of the first side wall being damaged by the impact force and reducing the possibility of the impact force affecting the external parts.

[0013] In addition, the actuator according to the above-mentioned embodiments of the present application can also have the following additional technical features:

[0014] According to some embodiments of the present application, the reinforcing part is covered on the outside of the housing to cover at least a part of the first side wall.

[0015] According to some embodiments of the present application, the reinforcing part is a metal part.

[0016] According to some embodiments of the present application, the wall thickness of the reinforcing part is not less than the wall thickness of the first side wall.

[0017] According to some embodiments of the present application, the second opening is arranged opposite to the first opening in the thickness direction of the first side wall, and the size of the second opening is smaller than the size of the first opening.

[0018] According to some embodiments of the present application, the first opening is located in the middle of the housing, and the reinforcing part comprises two annular collars, each of the collars is sleeved on the outer peripheral wall of the housing, and the two collars cooperatively define the second opening.

[0019] According to some embodiments of the present application, the first opening and the through hole are distributed on the opposite side walls of the housing, and the reinforcing part covers the first side wall and a second side wall intersecting with the first side wall.

[0020] According to some optional embodiments of the present application, the reinforcing member and the detonator at least partially overlap in the projection of the second side wall

[0021] According to some embodiments of the present application, the actuator further comprises a fixed support part which is at least partially fixed to the outside of the shell, and the reinforcing member is located between the fixed support part and the shell.

[0022] According to some optional embodiments of the present application, the fixed support part at least partially covers a part of the fuse.

[0023] According to some specific embodiments of the present application, the fixed support part is formed as a resin member.

[0024] According to some optional embodiments of the present application, the fixed support part comprises a first fixed part and a second fixed part, the second fixed part covers the shell, one end of the first fixed part is connected to the second fixed part, and the other end extends into the accommodating cavity and is connected to the detonator.

[0025] According to a second aspect of the present application, an actuator assembly is provided, comprising: a conductive member; an actuator according to the first aspect of the present application; wherein the impact force pushes the moving member to extend out of the shell and cooperate with the conductive member to cause the conductive member to break.

[0026] According to the actuator assembly of the present application, by using the actuator according to the first aspect of the present application, by providing a reinforcing member covering at least a part of the first side wall to enhance the structural strength of the first side wall, the first side wall is less likely to be damaged, thereby reducing the possibility of the impact force affecting the external parts.

[0027] According to some embodiments of the present application, the conductive member is provided with a through hole penetrating the thickness of the conductive member to form a weak area on the conductive member, and the weak area is correspondingly arranged with the moving member.

[0028] According to some embodiments of the present application, the actuator assembly comprises three conductive members, and the actuator comprises at least two moving members, each moving member is correspondingly arranged with one of the conductive members to cause the corresponding conductive member to break when the moving member is moved by the impact force; or the moving member is one, and the moving member is arranged with at least two conductive members to cause at least two conductive members to break when the moving member is moved by the impact force.

[0029] According to a third aspect of the present application, an electric machine controller is provided, which comprises the actuator assembly according to the second aspect of the present application and at least three phase arms, each phase arm comprising at least two power tubes, one end of the conductive member being connected to an alternating current end of the phase arm, and the other end being used for connecting to a phase winding of an electric machine.

[0030] According to the actuator assembly of the present application, by using the actuator according to the first aspect of the present application, the moving member is driven to move by the explosion device, the moving member breaks the conductive member, and then the circuit is disconnected, so as to disconnect the loop between the electric machine and the electric machine controller, and prevent the power tubes in the electric machine controller from being burnt out.

[0031] According to a fourth aspect of the present application, an electric machine assembly is provided, which comprises the electric machine controller according to the third aspect of the present application.

[0032] According to the electric machine assembly of the present application, by using the electric machine controller according to the third aspect of the present application, the moving member is driven to move by the explosion device, the moving member breaks the conductive member, and then the circuit is disconnected, so as to disconnect the loop between the electric machine and the electric machine controller, and prevent the power tubes in the electric machine controller from being burnt out.

[0033] According to a fifth aspect of the present application, a vehicle is provided, which comprises the electric machine assembly according to the fourth aspect of the present application.

[0034] According to the vehicle of the present application, by using the electric machine assembly according to the fourth aspect of the present application, the moving member is driven to move by the explosion device, the moving member breaks the conductive member, and then the circuit is disconnected, so as to disconnect the loop between the electric machine and the electric machine controller, and prevent the power tubes in the electric machine controller from being burnt out.

[0035] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0037] Fig. 1 is a structural cross-sectional view of an actuator according to an embodiment of the present application;

[0038] Fig. 2 is a structural cross-sectional view of the actuator according to an embodiment of the present application when the moving member extends out of the accommodating cavity;

[0039] Fig. 3 is a partial structural schematic view of the actuator according to an embodiment of the present application;

[0040] Fig. 4 is a partially exploded view of an actuator according to an embodiment of the present application;

[0041] Fig. 5 is a top view of a reinforcing member according to an embodiment of the present application;

[0042] Fig. 6 is a front view of a reinforcing member according to an embodiment of the present application;

[0043] Fig. 7 is a sectional view of an actuator according to an embodiment of the present application;

[0044] Fig. 8 is a structural schematic view of an actuator assembly according to an embodiment of the present application;

[0045] Fig. 9 is a partially exploded view of an actuator assembly according to an embodiment of the present application;

[0046] Fig. 10 is a structural schematic view of a conductive member according to an embodiment of the present application;

[0047] Fig. 11 is a structural schematic view of a motor controller according to an embodiment of the present application;

[0048] Fig. 12 is a structural schematic view of a motor assembly according to an embodiment of the present application;

[0049] Fig. 13 is a structural schematic view of a vehicle according to an embodiment of the present application.

[0050] Reference signs: actuator 1,

[0051] housing 10, accommodating cavity 101, first side wall 11, first opening 12, through hole 13, second side wall 14, moving member 20, sealing member 21, annular groove 211, concave surface 22,

[0052] reinforcing member 30, collar 301, second opening 32, explosive device 40, fuse 41, first electric connection wire 411, second electric connection wire 412, detonator 42, fixed support part 50, first fixed part 51, second fixed part 52,

[0053] actuator assembly 7, outer shell 71, conductive member 72, through opening 721, first conductive sheet 724, second conductive sheet 725, weak area 726, groove 727,

[0054] insulated gate bipolar transistor 73, three-phase magnetic ring 74, current Hall sensor 75, safety member 76;

[0055] 800, motor controller; 900, motor assembly; 1000, vehicle. DETAILED DESCRIPTION

[0056] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0057] The actuator 1 according to an embodiment of this application is described below with reference to the accompanying drawings.

[0058] As shown in Figures 1-4, the actuator 1 according to an embodiment of this application includes a housing 10, a movable member 20, a reinforcing member 30, and an explosive device 40.

[0059] The housing 10 defines a receiving cavity 101. The first sidewall 11 of the housing 10 is provided with a first opening 12 communicating with the receiving cavity 101. The housing 10 is also provided with a through hole 13 communicating with the receiving cavity 101. The movable member 20 is movably disposed in the receiving cavity 101. The reinforcing member 30 covers at least a portion of the first sidewall 11. The reinforcing member 30 is provided with a second opening 32, which communicates with the first opening 12.

[0060] At least a portion of the explosive device 40 is disposed within the receiving cavity 101. The explosive device 40 is configured to generate an impact force upon ignition to move the movable member 20, and to cause a portion of the movable member 20 to extend out of the housing 10 through the through hole 13, thereby actuating the movable member 20.

[0061] The explosive device 40 includes a fuse 41 and an initiator 42. One end of the fuse 41 is connected to the initiator 42, and the other end of the fuse 41 extends out of the housing 10 through the first opening 12 and the second opening 32, so as to facilitate the ignition of the initiator 42 by controlling the fuse 41.

[0062] The reinforcing member 30 and the detonator 42 have at least partial overlap in their orthographic projections on the first sidewall 11, so that when the detonator 42 is detonated, the first sidewall 11 and the reinforcing member 30 can jointly bear at least part of the impact force, thereby reducing the possibility of the casing 10 being damaged.

[0063] Specifically, when it is necessary to drive the moving part 20 to move, the control fuse 41 ignites the detonator 42. At this time, the explosive device 40 is ignited. The impact force generated after the explosive device 40 is ignited pushes the moving part 20 to move. During this process, the shell 10 is also subjected to a large impact force. Since the first side wall 11 of the shell 10 is provided with the first opening 12, the structural strength of the first side wall 11 is low and it is easy to deform or break due to impact force. The reinforcing member 30 covers at least a part of the first side wall 11, which is convenient to strengthen the structural strength of the first side wall 11, thereby reducing the possibility of deformation of the first side wall 11 and reducing the probability of deformation near the first opening 12.

[0064] Therefore, the actuator 1 according to the embodiments of the present application can cover at least a part of the first side wall 11 by arranging the reinforcing member 30, so as to enhance the structural strength of the first side wall 11, prevent the first side wall 11 from being damaged, and reduce the possibility that the first side wall 11 is damaged by the impact force and the possibility that the impact force affects the external parts.

[0065] Hereinafter, the actuator 1 according to the embodiments of the present application will be described with reference to the accompanying drawings.

[0066] In some embodiments of the present application, as shown in FIGS. 1-3, the actuator 1 comprises a housing 10, a moving member 20, a reinforcing member 30, and an explosive device 40.

[0067] In some embodiments of the present application, as shown in FIGS. 1 and 3, the reinforcing member 30 is arranged on the outer side of the housing 10 to cover at least a part of the first side wall 11, so as to enhance the structural strength of the first side wall 11 by the reinforcing member 30, prevent the first side wall 11 from being damaged, and reduce the possibility that the first side wall 11 is damaged by the impact force and the possibility that the impact force affects the external parts.

[0068] In some embodiments of the present application, the reinforcing member 30 is arranged on the outer side of the housing 10, which can not occupy the space in the accommodating cavity 101 and is easier to be implemented than being arranged in the accommodating cavity 101.

[0069] In some embodiments of the present application, the reinforcing member 30 is made of metal, so as to have sufficient strength, and thus the reinforcing member 30 can enhance the structural strength of the first side wall 11, prevent the first side wall 11 from being damaged, and reduce the possibility that the first side wall 11 is damaged by the impact force and the possibility that the impact force affects the external parts.

[0070] In some embodiments, the reinforcing member 30 is made of steel.

[0071] In some embodiments of the present application, the wall thickness of the reinforcing member 30 is not less than that of the first side wall 11, so as to have greater structural strength, prevent the reinforcing member 30 from being damaged, and thus the reinforcing member 30 can enhance the structural strength of the first side wall 11, prevent the first side wall 11 from being damaged, and reduce the possibility that the first side wall 11 is damaged by the impact force and the possibility that the impact force affects the external parts.

[0072] In some embodiments, the wall thickness of the reinforcing member 30 is equal to that of the first side wall 11, or the wall thickness of the reinforcing member 30 is greater than that of the first side wall 11, which is not limited herein.

[0073] In some embodiments of the present application, as shown in FIG. 1, FIG. 4-FIG. 7, the second opening 32 is arranged opposite to the first opening 12 in the thickness direction of the first side wall 11, so that the fuse 41 can extend out of the accommodating cavity 101 through the first opening 12 and the second opening 32, facilitating the control of the igniter 42 by the fuse 41.

[0074] In some embodiments of the present application, the size of the second opening 32 is smaller than the size of the first opening 12, so as to reduce the influence of the second opening 32 on the structural strength of the reinforcing member 30, and further enable the reinforcing member 30 to enhance the strength of the first side wall 11, so as to reduce the possibility that the impact force affects the external parts.

[0075] In addition, the size of the second opening 32 is smaller than the size of the first opening 12, so that the reinforcing member 30 can cover a part of the first opening 12, that is, a part of the weak area of the first side wall 11, so as to enhance the structural strength of the weak area of the first side wall 11 by the reinforcing member 30.

[0076] In some embodiments, the assembly steps of the actuator 1 are as follows: the igniter 42 and the fuse 41 are placed into the accommodating cavity 101 from the first opening 12, so that the fuse 41 extends out of the accommodating cavity 101 from the first opening 12, and then the reinforcing member 30 is installed outside the housing 10, so that the reinforcing member 30 covers at least a part of the first side wall 11, and the fuse 41 extends out of the housing 10 from the second opening 32.

[0077] Since the igniter 42 is placed into the accommodating cavity 101 from the first opening 12, the size of the first opening 12 needs to be larger than the size of the igniter 42, and the size of the fuse 41 is smaller than the size of the igniter 42, so the size of the second opening 32 needs to be larger than the size of the fuse 41, and thus the size of the second opening 32 is smaller than the size of the first opening 12, which facilitates the reduction of the influence of the second opening 32 on the structural strength of the reinforcing member 30, and further enables the reinforcing member 30 to increase the structural strength of the first side wall 11, so as to reduce the possibility that the first side wall 11 is damaged by the impact force, and reduce the possibility that the impact force affects the external parts.

[0078] In some embodiments, as shown in FIG. 4, the fuse 41 includes a first electric connection line 411 and a second electric connection line 412, and the first electric connection line 411 and the second electric connection line 412 are in a non-electric connection state normally, and when it is necessary to drive the moving part 20 to move, the first electric connection line 411 and the second electric connection line 412 are turned on, at this time, the current flows to the igniter 42 and ignites the igniter 42, and the igniter 42 is ignited to generate an impact force to drive the moving part 20 to move.

[0079] In some examples, the first electric connection line 411 extends in a direction parallel to the extending direction of the second electric connection line 412, so that the first electric connection line 411 and the second electric connection line 412 are normally in a non-connection state. The actuator 1 further comprises a conductive part, which connects the end portions of the first electric connection line 411 and the second electric connection line 412 to conduct the first electric connection line 411 and the second electric connection line 412 when it is needed to drive the moving part 20 to move. At this time, the current flows to the detonator 42 to ignite the detonator 42, and the impact force generated when the detonator 42 is ignited drives the moving part 20 to move.

[0080] In some optional embodiments of the present application, as shown in FIGS. 4 and 5, the first opening 12 is located in the middle of the shell 10, so as to facilitate the arrangement of the detonator 42 in the middle of the accommodating cavity 101.

[0081] The reinforcing part 30 comprises two annular collars 301, each of which is sleeved on the outer peripheral wall of the shell 10, and the two collars 301 cooperatively define the second opening 32, so as to reserve space for the fuze 41 while the reinforcing part 30 is sleeved on the outer peripheral wall of the shell 10, and the fuze 41 is located at the second opening 32.

[0082] In some embodiments, as shown in FIGS. 2-4 and 6, the actuator 1 comprises two moving parts 20, the shell 10 defines a cylindrical accommodating cavity 101, the first side wall 11 is the side wall of the accommodating cavity 101, each of the two end walls of the accommodating cavity 101 is provided with a through hole 13, the moving part 20 is movable in the axial direction of the accommodating cavity 101 when subjected to the impact force, the detonator 42 is located between the two moving parts 20, and the moving part 20 and the detonator 42 are arranged in the axial direction of the accommodating cavity 101. When the detonator 42 is ignited, the impact force generated by the detonator 42 can simultaneously drive the two moving parts 20 to move away from each other, so as to realize the synchronous movement of the two moving parts 20.

[0083] Herein, the shell 10 can also define a cubic or polygonal accommodating cavity 101, which is not limited herein.

[0084] The axes of the first opening 12 and the second opening 32 extend in the radial direction of the accommodating cavity 101, and the fuze 41 extends in the radial direction of the accommodating cavity 101, i.e., the extending direction of the fuze 41 is perpendicular to the axial direction of the accommodating cavity 101. The two collars 301 are respectively sleeved on the outer peripheral wall of the shell 10 from the two sides of the accommodating cavity 101 in the axial direction of the accommodating cavity, and the fuze 41 is located in the second opening 32.

[0085] When the igniter 42 is ignited, the impact force is generated around the igniter 42, and the two moving parts 20 are moved away from each other along the axis of the accommodating cavity 101 under the impact force, and the first side wall 11 is also impacted, so that the reinforcing part 30 covers at least a part of the first side wall 11 to increase the structural strength of the first side wall 11 by the reinforcing part 30, thereby reducing the possibility of the first side wall 11 being damaged, so as to avoid the impact force generated when the igniter 42 is ignited from affecting the external parts.

[0086] In some examples, the reinforcing part 30 has a size of three to four times the size of the first opening 12 along the axis of the accommodating cavity 101, so as to increase the structural strength of the first side wall 11 by the reinforcing part 30, reduce the possibility of the first side wall 11 being damaged, and reduce the possibility of the impact force affecting the external parts.

[0087] In some embodiments of the present application, as shown in FIG. 7, the first opening 12 and the through hole 13 are distributed on the opposite side walls of the shell 10, and the reinforcing part 30 covers the first side wall 11 and the second side wall 14 intersecting with the first side wall 11, so as to increase the structural strength of the first side wall 11 and the second side wall 14 by the reinforcing part 30, thereby reducing the possibility of the first side wall 11 and the second side wall 14 being damaged, and reducing the possibility of the impact force affecting the external parts.

[0088] In some embodiments, as shown in FIG. 7, the actuator 1 includes one moving part 20, the shell 10 defines a cylindrical accommodating cavity 101, the first side wall 11 is an end wall of the accommodating cavity 101, the second side wall 14 is a side wall of the accommodating cavity 101, the first opening 12 is provided on the first side wall 11, the through hole 13 is provided on the other end wall of the shell 10, the through hole 13 is oppositely arranged with the first opening 12 along the axis of the accommodating cavity 101, and the moving part 20 is located on one side of the igniter 42 along the axis of the accommodating cavity 101, and the moving part 20 can move along the axis of the accommodating cavity 101 when impacted.

[0089] In addition, the shell 10 can also define a cubic or polygonal accommodating cavity 101, which is not limited here.

[0090] The axes of the first opening 12 and the second opening 32 extend along the axis of the accommodating cavity 101, the fuse 41 extends along the axis of the accommodating cavity 101, the reinforcing part 30 is sleeved on a part of the first side wall 11 and the second side wall 14 of the shell 10 from one side of the axis of the accommodating cavity 101, and the fuse 41 is arranged through the second opening 32 on the reinforcing part 30.

[0091] When the detonator 42 is ignited, the impact force is generated around the detonator 42, and the moving part 20 is moved along the axis of the accommodating cavity 101 in the direction away from the detonator 42 under the impact force, and the first side wall 11 and the second side wall 14 are also impacted, so that the reinforcing part 30 covers a part of the first side wall 11 and the second side wall 14 to increase the structural strength of the first side wall 11 and the second side wall 14 by the reinforcing part 30, thereby reducing the possibility of the first side wall 11 and the second side wall 14 being damaged and reducing the possibility of the impact force affecting the external parts.

[0092] In some embodiments, the reinforcing part 30 and the detonator 42 at least partially overlap in the orthographic projection of the second side wall 14, so that the second side wall 14 and the reinforcing part 30 jointly bear at least part of the impact force when the detonator 42 is ignited, thereby facilitating the reduction of the possibility of the shell 10 being damaged.

[0093] In some embodiments of the present application, as shown in FIG. 1, the actuator 1 further comprises a fixed support part 50 which is at least partially fixed to the outside of the shell 10, and the reinforcing part 30 is located between the fixed support part 50 and the shell 10, so that the fixed support part 50 fixes the reinforcing part 30 outside the shell 10 to avoid the reinforcing part 30 falling off the shell 10.

[0094] In some optional embodiments of the present application, as shown in FIG. 1 and FIG. 4, the fixed support part 50 at least wraps a part of the fuse 41 to close the first opening 12 and the second opening 32, so as to avoid the impact force generated when the detonator 42 is ignited from affecting the external parts through the first opening 12 and the second opening 32, and to avoid the leakage of the gunpowder residue formed when the detonator 42 is ignited.

[0095] In addition, wrapping a part of the fuse 41 by the fixed support part 50 can not only limit the position of the fuse 41, but also fill the gap between the first opening 12 and the fuse 41 and the gap between the second opening 32 and the fuse 41, thereby facilitating the further strengthening of the structure of the shell 10 as a whole.

[0096] In some specific embodiments of the present application, the fixed support part 50 is formed as a resin part, so that the fixed support part 50 can be adaptively formed into a relatively complex shape to adapt to the shape of the shell 10 and the reinforcing part 30, thereby fixing the reinforcing part 30 on the shell 10.

[0097] In some embodiments, a part of the fixed support part 50 is located in the accommodating cavity 101 to fix the position of the detonator 42, wherein the liquid resin part enters the accommodating cavity 101 from the first opening 12 and the second opening 32, and after the resin part solidifies, the position of the detonator 42 in the accommodating cavity 101 is fixed and the outer periphery of the reinforcing part 30 and the shell 10 is covered to fix the reinforcing part 30.

[0098] In some optional embodiments of the present application, as shown in FIG. 2, the fixed support part 50 comprises a first fixed part 51 and a second fixed part 52, the second fixed part 52 is covered on the outside of the shell 10, one end of the first fixed part 51 is connected to the second fixed part 52, and the other end is inserted into the accommodating cavity 101 and connected to the detonator 42 to fix the position of the detonator 42 in the accommodating cavity 101.

[0099] In some embodiments, the reinforcing part 30 is covered on the shell 10, the second fixed part 52 is covered on the shell 10 and the reinforcing part 30, the size of the first fixed part 51 is greater than the size of the first opening 12, and the size of the second fixed part 52 is greater than the size of the second opening 32, that is, the reinforcing part 30 and the first side wall 11 are clamped between the first fixed part 51 and the second fixed part 52, so as to fix the second fixed part 52 on the outside of the shell 10, fix the first fixed part 51 in the accommodating cavity 101, and fix the position of the detonator 42 in the accommodating cavity 101 by the first fixed part 51.

[0100] In some embodiments, the position of the detonator 42 in the accommodating cavity 101 is fixed by the first fixed part 51, so that a separate support bracket does not need to be arranged in the accommodating cavity 101, which facilitates reducing the number of parts in the actuator 1 and reducing the step of installing the support bracket into the accommodating cavity 101.

[0101] In some specific embodiments, the detonator 42 is installed along from the first opening 12 into the accommodating cavity 101, the reinforcing part 30 is covered on the outside of the shell 10, and then the resin material is used to integrally form the fixed support part 50, so that the first fixed part 51 of the fixed support part 50 is inserted into the accommodating cavity 101 to fix the position of the detonator 42 in the accommodating cavity 101, and the second fixed part 52 is covered on the reinforcing part 30 and the shell 10 to fix the fixed support part 50 and the reinforcing part 30 on the outside of the shell 10.

[0102] In some embodiments of the present application, when the detonator 42 is ignited, a large amount of gas is released, which causes the air pressure in the accommodating cavity 101 to increase, and then an impact force is generated on the moving part 20 to drive the moving part 20 to move, so as to realize the braking of the moving part 20.

[0103] In some embodiments, the detonator 42 comprises at least one of sodium azide (NaN3) and ammonium nitrate (NH4NO3), when the detonator 42 is ignited, a large amount of nitrogen gas is released, at this time, the air pressure in the accommodating cavity 101 increases, and then an impact force is generated on the moving part 20 to drive the moving part 20 to move, so as to realize the braking of the moving part 20.

[0104] In some embodiments, as shown in FIG. 1, the mobile member 20 is provided with a sealing member 21, which is used to seal the gap between the mobile member 20 and the inner wall of the accommodating cavity 101, so as to reduce the leakage of gas, and when the igniter 42 is ignited and releases gas, the mobile member 20 will be subjected to sufficient impact force, so that the mobile member 20 can be moved.

[0105] In some examples, as shown in FIG. 4, the outer periphery of the mobile member 20 is provided with an annular groove 211, and the sealing member 21 is an annular sealing member 21, which is arranged in the annular groove 211 to seal the gap between the mobile member 20 and the inner wall of the accommodating cavity 101, so as to avoid the leakage of gas released by the igniter 42 from the gap between the mobile member 20 and the inner wall of the accommodating cavity 101.

[0106] In some embodiments of the present application, as shown in FIGS. 2 and 4, the size of the through hole 13 is slightly larger than the size of the mobile member 20, so that the mobile member 20 can be moved out of the accommodating cavity 101 from the through hole 13. In this way, the size of the through hole 13 is not set too large, so as to reduce the influence of the through hole 13 on the structural strength of the shell 10 and reduce the possibility of the shell 10 being damaged when subjected to impact force.

[0107] In some embodiments of the present application, as shown in FIG. 2, the shell 10 defines a cylindrical accommodating cavity 101, and the mobile member 20 is located on the side of the igniter 42 in the axial direction of the accommodating cavity 101. The end of the mobile member 20 towards the igniter 42 is provided with a concave surface 22, which is recessed away from the igniter 42. When the igniter 42 is ignited and releases impact force, the concave surface 22 can change the direction of the impact force, so that the mobile member 20 is subjected to impact force in the axial direction of the accommodating cavity 101, and thus the mobile member 20 can move in the axial direction of the accommodating cavity 101 away from the igniter 42 when subjected to impact force.

[0108] The following FIGS. 8-10 describe the actuator assembly 7 according to embodiments of the present application.

[0109] The actuator assembly 7 according to embodiments of the present application comprises the actuator 1 according to the above-mentioned embodiments of the present application and a conductive member 72.

[0110] In particular, when it is necessary to disconnect the circuit on the conductive member 72, the fuse 41 ignites the igniter 42, at which time the mobile member 20 is subjected to impact force and moves towards the conductive member 72. The mobile member 20 strikes the conductive member 72, causing the conductive member 72 to break, and thus disconnecting the circuit on the conductive member 72.

[0111] In particular, when it is necessary to disconnect the circuit on the conductive member 72, the fuse 41 ignites the igniter 42, at which time the mobile member 20 is subjected to impact force and moves towards the conductive member 72. The mobile member 20 strikes the conductive member 72, causing the conductive member 72 to break, and thus disconnecting the circuit on the conductive member 72.

[0112] According to the actuator assembly 7 of the embodiments of the present application, by using the actuator 1 of the above embodiments of the present application, by arranging the reinforcing member 30 to cover at least a portion of the first side wall 11 to enhance the structural strength of the first side wall 11, the first side wall 11 is less likely to be damaged, and the possibility of the impact force affecting the external parts is reduced.

[0113] In some embodiments of the present application, as shown in FIG. 10, the conductive member 72 is provided with a through hole 721 penetrating the thickness of the conductive member 72 to form a weak area 726 on the conductive member 72, and the weak area 726 is arranged corresponding to the moving member 20, so that when the moving member 20 is moved under the impact force, the weak area 726 can be easily damaged, and the circuit on the conductive member 72 is disconnected.

[0114] In some embodiments, the conductive member 72 has an electrical input end and an electrical output end, and the weak area 726 is located between the electrical input end and the electrical output end, so that when the moving member 20 is moved under the impact force and the weak area 726 is damaged, the current flowing from the electrical input end to the electrical output end can be disconnected, and the circuit on the conductive member 72 is disconnected.

[0115] In some embodiments, the conductive member 72 includes a first conductive sheet 724, a second conductive sheet 725, and a weak area 726, the electrical input end is located at one end of the first conductive sheet 724 away from the weak area 726, and the electrical output end is located at one end of the second conductive sheet 725 away from the weak area 726, in the thickness direction of the conductive member 72, the projection of the weak area 726 is crescent-shaped, that is, the size of both ends of the weak area 726 is smaller, the first end of the weak area 726 is connected to the first conductive sheet 724, so that the strength of the connection between the weak area 726 and the first conductive sheet 724 is smaller, and the second end of the weak area 726 is connected to the second conductive sheet 725, so that the strength of the connection between the weak area 726 and the second conductive sheet 725 is smaller.

[0116] Among them, the weak area 726 includes a plane and a curved surface, one end of the curved surface is connected to one end of the plane to form the first end of the weak area 726, the other end of the curved surface is connected to the other end of the plane to form the second end of the weak area 726, and the plane is arranged towards the moving member 20, and when the moving member 20 is subjected to the impact force, the moving member 20 is in contact with the plane.

[0117] The moving member 20 can more easily damage the connection between the first end of the weak area 726 and the first conductive sheet 724, and / or more easily damage the connection between the second end of the weak area 726 and the second conductive sheet 725, to disconnect the electrical connection between the first conductive sheet 724 and the second conductive sheet 725, and further disconnect the circuit on the conductive member 72.

[0118] In some examples, as shown in FIG. 10, two grooves 727 are further provided on the conductive piece 72, and the two grooves 727 correspond to the first end and the second end of the weak area 726 respectively, so as to further reduce the connection strength of the weak area 726 at the connection with the first conductive sheet 724, and reduce the connection strength of the weak area 726 at the connection with the second conductive sheet 725.

[0119] In some embodiments of the present application, as shown in FIG. 1, FIG. 8 and FIG. 9, the actuator assembly 7 includes three conductive pieces 72, and the actuator 1 includes at least two moving pieces 20, each of which is arranged correspondingly to one of the conductive pieces 72 so as to make the corresponding conductive piece 72 break when the moving piece 20 is moved by the impact force, thereby breaking the circuit.

[0120] In some embodiments, the three conductive pieces 72 form a three-phase circuit, and each of the moving pieces 20 is arranged correspondingly to one of the conductive pieces 72 so as to make the corresponding conductive piece 72 break when the moving piece 20 is moved by the impact force, thereby breaking the three-phase circuit.

[0121] In some embodiments, the actuator 1 includes two moving pieces 20, and when the igniter 42 is ignited, the two moving pieces 20 are moved by the impact force in directions away from each other, and the two moving pieces 20 are located between two of the conductive pieces 72. When the igniter 42 is ignited, the two moving pieces 20 are moved by the impact force in directions away from each other, and the moving piece 20 can damage the corresponding conductive piece 72, thereby damaging the two conductive pieces 72 and breaking the circuit.

[0122] In some embodiments of the present application, the moving piece 20 is one, and the moving piece 20 is arranged correspondingly to at least two of the conductive pieces 72 so as to make the at least two conductive pieces 72 break when the moving piece 20 is moved by the impact force, thereby breaking the circuit.

[0123] In some embodiments, when the igniter 42 is ignited, the moving piece 20 is moved by the impact force in a direction away from the igniter 42, and two of the conductive pieces 72 are located on the side of the moving piece 20 away from the igniter 42, and the two conductive pieces 72 can be placed in overlap. When the igniter 42 is ignited, the moving piece 20 is moved by the impact force in a direction away from the igniter 42, and the moving piece 20 can damage the two conductive pieces 72 correspondingly, thereby breaking the circuit.

[0124] In some embodiments of the present application, the end of the moving piece 20 extending out of the accommodating cavity 101 forms an impact head, and the impact head is made of liquid crystal polymer material, so that the impact head has sufficient strength to break the conductive piece 72.

[0125] In some embodiments of the present application, the actuator assembly 7 further comprises a housing 71, the shell 10 of the actuator 1 is fixed to the housing 71, the conductive part 72 is located outside the shell 10, and the housing 71 defines a placement opening, the edge of the placement opening is provided with a buckle, and the actuator 1 is buckled and fixed to the placement opening.

[0126] In addition, the actuator 1 can also be fixed to the housing 71 by screws, or the shell 10 and the housing 71 can be integrally injection molded, which is not limited here.

[0127] In some embodiments of the present application, as shown in FIGS. 8 and 9, the fuse 41 controls the ignition of the igniter 42 through a current signal, the housing 71 is an injection molded housing 71, and the actuator assembly 7 further comprises a control unit, an insulated gate bipolar transistor 73, a three-phase magnetic ring 74, and a current Hall sensor 75.

[0128] The three-phase magnetic ring 74 is used to sense the current magnetic field at the conductive part 72, and the current Hall sensor 75 is arranged on the conductive part 72 to monitor the intensity and direction of the current on the conductive part 72 and transmit real-time current data to the control unit. The control unit analyzes the current data to determine whether there are abnormal conditions such as overcurrent and short circuit. When an abnormal condition is detected, the control unit sends a signal to the execution device, and the execution device controls the fuse 41 to ignite the igniter 42. When the moving part 20 is impacted and moves, the conductive part 72 is broken to disconnect the circuit on the conductive part 72, thereby isolating the fault current and ensuring system safety.

[0129] The actuator assembly 7 further comprises a fuse 76, which is fixed to the conductive part 72 by screws or welding and is connected in parallel with the weak area 726. When the weak area 726 is damaged and the conductive part 72 is broken, the current flows through the fuse 76 and breaks the fuse 76, which is used to release the instantaneous current on the conductive part 72.

[0130] In summary, by integrating the three conductive parts 72, the actuator 1, the fuse 76, the three-phase magnetic ring 74, and the current Hall sensor 75 into an integrated module, the organic combination of multifunctional components is realized, and high-sensitivity monitoring and active cutting of the current are realized. When the actuator assembly 7 is applied to the motor of a new energy vehicle, the safety performance of the new energy vehicle is significantly improved. By integrating multiple functional modules, the structure of the safety module of the motor control system is greatly simplified while meeting the safety performance requirements, and the integration level of the motor control system is improved, providing a guarantee for the safety and reliability of the motor control system.

[0131] In some embodiments, the current Hall sensor 75 can be a coreless current Hall sensor 75 or a core current Hall sensor 75, which is not limited here.

[0132] In some embodiments, the insulated gate bipolar transistor 73 can be replaced by other power semiconductors, such as gallium nitride (GaN) and silicon carbide (SiC), without further limitation.

[0133] In some embodiments, the current Hall sensor 75 is arranged at the end of the conductive member 72 towards the three-phase magnetic ring 74, and of course, the current Hall sensor 75 can also be arranged at other positions, which can be optimized according to the current distribution characteristics and the requirements of the sensing sensitivity to improve the stability and accuracy of the current Hall sensor 75.

[0134] In some embodiments, the actuator assembly 7 further comprises an injection molding part, and the insulated gate bipolar transistor 73 and the three-phase magnetic ring 74 are located in the injection molding part.

[0135] In some embodiments, the insulated gate bipolar transistor 73 can be fixed to the injection molding part by screws or by welding, without further limitation.

[0136] Next, according to FIG. 11, a motor controller 800 according to an embodiment of the present application is described, which comprises the actuator assembly 7 of the above-mentioned embodiments of the present application and at least three-phase bridge arms, each of which comprises at least two power tubes, one end of the conductive member 72 is connected to the AC end of the bridge arm, and the other end is used to connect to one phase winding of the motor.

[0137] According to the motor controller 800 of the embodiments of the present application, by using the actuator assembly 7 of the above-mentioned embodiments of the present application, the moving member 20 is driven to move by the explosive device 40, the moving member 20 is broken to break the conductive member 72, and then the circuit is disconnected to disconnect the loop between the motor and the motor controller 800, preventing the power tubes in the motor controller 800 from being burned out.

[0138] Next, according to FIG. 12, a motor assembly 900 according to an embodiment of the present application is described, which comprises the motor controller 800 of the above-mentioned embodiments of the present application.

[0139] According to the motor assembly 900 of the embodiments of the present application, by using the motor controller 800 of the above-mentioned embodiments of the present application, the moving member 20 is driven to move by the explosive device 40, the moving member 20 is broken to break the conductive member 72, and then the circuit is disconnected to disconnect the loop between the motor and the motor controller 800, preventing the power tubes in the motor controller 800 from being burned out.

[0140] Next, according to FIG. 13, a vehicle 1000 according to an embodiment of the present application is described, which comprises the motor assembly 900 of the above-mentioned embodiments of the present application.

[0141] According to the vehicle 1000 of the embodiment of the present application, by using the motor assembly 900 according to the above-mentioned embodiment of the present application, the moving piece 20 is driven to move by the explosion device 40, the moving piece 20 breaks the conductive piece 72, and then the circuit is disconnected to disconnect the loop between the motor and the motor controller 800, so as to prevent the power tube in the motor controller 800 from burning out.

[0142] Other configurations and operations of the vehicle 1000 according to the embodiment of the present application are known to those skilled in the art, and will not be described in detail here.

[0143] In the description of the present application, it should be understood that the 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 present application and simplifying the description, and do not indicate or imply that the device or element 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 present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise stated. In the description of the present application, the first feature "above" or "below" the second feature can include the first and second features directly contacting each other, or the first and second features not directly contacting each other but contacting each other through another feature therebetween.

[0144] In the description of the present application, the first feature "above", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in terms of height.

[0145] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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 communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0146] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. Such terminology means that a particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of such terminology in various places in the specification does not necessarily refer to the same embodiment or example. Moreover, it is appreciated that the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0147] Although embodiments of this application have been shown and described, it is to be understood that various modifications, substitutions, combinations, and variations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An actuator, wherein, The shell (10) defines a containing cavity (101), a first side wall (11) of the shell (10) is provided with a first opening (12) communicating with the containing cavity (101), and the shell (10) is further provided with a through hole (13) communicating with the containing cavity (101); A moving part (20) is arranged in the containing cavity (101); A reinforcing part (30) covers at least a portion of the first side wall (11), and the reinforcing part (30) is provided with a second opening (32) communicating with the first opening (12); An explosive device (40) is at least partially arranged in the containing cavity (101), and the explosive device (40) is configured to generate an impact force to push the moving part (20) to move and make a portion of the moving part (20) extend out of the shell through the through hole (13) after being ignited, wherein the explosive device (40) comprises a fuse (41) and an igniter (42), one end of the fuse (41) is connected with the igniter (42), and the other end of the fuse (41) extends out of the shell (10) through the first opening (12) and the second opening (32); The reinforcing part (30) and the igniter (42) at least partially overlap in the orthographic projection of the first side wall (11). The reinforcing part (30) covers at least a portion of the first side wall (11).

2. The actuator of claim 1, wherein, The reinforcing part (30) is a metal part.

3. The actuator of claim 1 or 2, wherein, The wall thickness of the reinforcing part (30) is not less than the wall thickness of the first side wall (11).

4. The actuator of any one of claims 1-3, wherein, The second opening (32) is arranged opposite to the first opening (12) in the thickness direction of the first side wall (11), and the size of the second opening (32) is smaller than the size of the first opening (12).

5. The actuator of any one of claims 1-4, wherein, The first opening (12) is located in the middle of the shell (10), and the reinforcing part (30) comprises two annular collars (301), each of which is sleeved on the outer peripheral wall of the shell (10), and the two collars (301) cooperatively define the second opening (32).

6. The actuator of any one of claims 1-5, wherein, The first opening (12) and the through hole (13) are distributed on opposite side walls of the shell (10), and the reinforcing part (30) covers the first side wall (11) and a second side wall (14) intersecting with the first side wall (11).

7. The actuator of any one of claims 1-6, wherein, The reinforcing part (30) and the igniter (42) at least partially overlap in the orthographic projection of the second side wall (14).

8. The actuator of claim 7, wherein, A fixed support part (50) is at least partially fixed to the outer side of the shell (10), and the reinforcing part (30) is located between the fixed support part (50) and the shell (10).

9. The actuator of any one of claims 1-8, wherein, The fixed support part (50) at least wraps a portion of the fuse (41).

10. The actuator of claim 9, wherein, The fixed support part (50) is formed as a resin part.

11. The actuator of claim 10, wherein, ​ 12. The actuator of any one of claims 9-11, wherein, The fixed support part (50) comprises a first fixed part (51) and a second fixed part (52), the second fixed part (52) is covered on the shell (10), one end of the first fixed part (51) is connected to the second fixed part (52), and the other end extends into the accommodating cavity (101) and is connected with the detonator (42).

13. An actuator assembly, wherein, Comprise: The conductive piece (72); The actuator is the actuator according to any one of claims 1-12; Wherein, the impact force pushes the moving piece (20) to extend out of the shell (10) and cooperate with the conductive piece (72) to make the conductive piece (72) break.

14. The actuator assembly of claim 13, wherein, The conductive piece (72) is provided with a through hole (721) penetrating the thickness of the conductive piece (72) to form a weak area (726) on the conductive piece (72), and the weak area (726) is correspondingly arranged with the moving piece (20).

15. An actuator assembly according to claim 13 or 14, wherein, Comprise three conductive pieces (72), The actuator comprises at least two moving pieces (20), each moving piece (20) is correspondingly arranged with one of the conductive pieces (72) to break the corresponding conductive piece (72) when moved by the impact force; or The moving piece (20) is one, and the moving piece (20) is used to be correspondingly arranged with at least two conductive pieces (72) to break at least two conductive pieces (72) when moved by the impact force.

16. An electric machine controller, wherein, Comprise the actuator assembly (7) according to any one of claims 13-15.

17. An electric machine assembly, wherein, Comprise the motor controller (800) of claim 16.

18. A vehicle, wherein, Comprise the motor assembly (900) of claim 17.

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