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

Abstract

The present invention relates to the field of brake technology, and discloses an actuator, an actuator assembly, a motor controller, a motor assembly and a vehicle. The actuator comprises: a housing, the housing defines a housing cavity, a first side wall of the housing is provided with a first opening, and the housing is also provided with a through hole; a moving part, the moving part is arranged in the housing cavity; a reinforcing member, the reinforcing member covers at least a portion of the first side wall, and a second opening is provided on the reinforcing member; an explosive device, the explosive device is at least partially arranged in the housing cavity, the explosive device is configured to generate an impact force after ignition to push the moving part to move and make part of the moving part extend out of the housing through the through hole, and the explosive device comprises a fuse and a detonator. The actuator according to an embodiment of the present invention enables the reinforcing member to cover at least a portion 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, so as to reduce the possibility of the first side wall being damaged by the impact force, and reduce the possibility that the impact force will affect external parts.

Description

Technical Field

[0001] The present invention relates to the field of braking technology, and in particular to an actuator, an actuator assembly, a motor controller, a motor assembly and a vehicle. Background Art

[0002] When the explosive component in the pyrotechnic actuator in the related art is ignited, the shell of the pyrotechnic actuator is easily damaged by the impact force of the explosion, resulting in scattering of shell fragments, which is easy to damage the structure near the pyrotechnic actuator, posing a major safety hazard. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an actuator, which is provided with a reinforcement member so that the reinforcement member covers at least a portion 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 that the impact force will affect external parts.

[0004] The present invention also provides an actuator assembly having the actuator.

[0005] The present invention also provides a motor controller having the actuator assembly.

[0006] The present invention also provides a motor component having the motor controller.

[0007] The present invention also provides a vehicle having an electric motor.

[0008] According to an actuator of an embodiment of the first aspect of the present invention, the actuator comprises: a shell, the shell defines a accommodating cavity, the first side wall of the shell is provided with a first opening connected to the accommodating cavity, and the shell is also provided with a through hole connected to the accommodating cavity; a moving member, the moving member is arranged in the accommodating cavity; a reinforcing member, the reinforcing member covers at least a part of the first side wall, the reinforcing member is provided with a second opening, and the second opening is connected to the first opening; an explosive device, the explosive device is at least partially arranged in the accommodating cavity, the explosive device is configured to generate an impact force after ignition to push the moving member to move and make a part of the moving member extend out of the shell through the through hole, the explosive device comprises a fuse and a detonator, one end of the fuse is connected to the detonator, and the other end of the fuse extends out of the shell through the first opening and the second opening; wherein the positive projections of the reinforcing member and the detonator on the first side wall at least partially overlap.

[0009] According to an embodiment of the present invention, the actuator is provided with a reinforcement member so that the reinforcement member covers at least a portion of the first side wall to enhance the structural strength of the first side wall, making the first side wall less susceptible to damage, thereby reducing the possibility of the first side wall being damaged by the impact force and reducing the possibility that the impact force will affect external parts.

[0010] In addition, the actuator according to the above embodiment of the present invention may also have the following additional technical features:

[0011] According to some embodiments of the present invention, the reinforcement member is covered on the outer side of the shell to cover at least a portion of the first side wall.

[0012] According to some embodiments of the present invention, the reinforcement member is a metal member.

[0013] According to some embodiments of the present invention, a wall thickness of the reinforcement is not less than a wall thickness of the first side wall.

[0014] According to some embodiments of the present invention, the second opening is disposed opposite to the first opening in the thickness direction of the first side wall, and a size of the second opening is smaller than a size of the first opening.

[0015] According to some embodiments of the present invention, the first opening is located in the middle of the shell, and the reinforcement comprises two annular rings, each of which is sleeved on the outer peripheral wall of the shell, and the two rings cooperate to define the second opening.

[0016] According to some embodiments of the present invention, the first opening and the through hole are distributed on opposite side walls of the housing, and the reinforcement member covers the first side wall and a second side wall intersecting the first side wall.

[0017] According to some optional embodiments of the present invention, the orthographic projections of the reinforcement member and the detonator on the second side wall at least partially overlap.

[0018] According to some embodiments of the present invention, the actuator further comprises a fixed support portion, the fixed support portion is at least partially fixed to the outside of the shell, and the reinforcement member is located between the fixed support portion and the shell.

[0019] According to some optional embodiments of the present invention, the fixed support portion wraps at least a portion of the fuse.

[0020] According to some specific embodiments of the present invention, the fixing support portion is formed as a resin piece.

[0021] According to some optional embodiments of the present invention, the fixed support portion includes a first fixed portion and a second fixed portion, the second fixed portion is covered on the shell, one end of the first fixed portion is connected to the second fixed portion, and the other end extends into the accommodating cavity to be connected to the detonator.

[0022] According to a second aspect of the present invention, an actuator assembly is provided, the actuator assembly comprising: a conductive member; an actuator according to the embodiment of the first aspect of the present invention; wherein the impact force pushes the moving member to extend out of the housing and cooperate with the conductive member to cause the conductive member to break.

[0023] According to the actuator assembly of the embodiment of the present invention, by utilizing the actuator described in the embodiment of the first aspect of the present invention, a reinforcement is arranged so that the reinforcement covers at least a portion of the first side wall to enhance the structural strength of the first side wall, making the first side wall less susceptible to damage, thereby reducing the possibility of the first side wall being damaged by impact force and reducing the possibility that the impact force will affect external parts.

[0024] According to some embodiments of the present invention, the conductive member is provided with a through hole penetrating through the thickness of the conductive member to form a weak area on the conductive member, and the weak area is arranged corresponding to the moving member.

[0025] According to some embodiments of the present invention, the actuator assembly includes three conductive members, the actuator includes at least two moving members, each of the moving members is arranged corresponding to one of the conductive members so as to cause the corresponding conductive member to break when it is moved by an impact force; or there is one moving member, and the moving member is used to be arranged corresponding to at least two conductive members so as to cause the at least two conductive members to break when it is moved by an impact force.

[0026] According to a third aspect of the present invention, a motor controller is proposed, which includes the actuator assembly described in the embodiment of the second aspect of the present invention and at least three-phase bridge arms, each phase bridge arm includes at least two power tubes, one end of the conductive part is connected to the AC end of the bridge arm, and the other end is used to connect to a phase winding of the motor.

[0027] According to the actuator assembly of the embodiment of the present invention, by utilizing the actuator described in the embodiment of the first aspect of the present invention, an explosive device is used to drive the moving part to move, so that the moving part destroys the conductive part, thereby achieving circuit disconnection, so as to disconnect the loop between the motor and the motor controller and prevent the power tube in the motor controller from burning out.

[0028] According to a fourth aspect of the present invention, an electric motor component is provided. The electric motor component includes the electric motor controller according to the embodiment of the third aspect of the present invention.

[0029] According to the motor assembly of the embodiment of the present invention, by utilizing the motor controller described in the embodiment of the third aspect of the present invention, an explosive device is used to drive the moving part to move, so that the moving part destroys the conductive part, thereby achieving circuit disconnection, so as to disconnect the loop between the motor and the motor controller and prevent the power tubes in the motor controller from burning out.

[0030] According to a fifth aspect of the present invention, a vehicle is provided. The vehicle includes the motor assembly according to the fourth aspect of the present invention.

[0031] According to the vehicle of the embodiment of the present invention, by utilizing the motor assembly described in the embodiment of the fourth aspect of the present invention, an explosive device is used to drive the moving part to move, so that the moving part destroys the conductive part, thereby achieving circuit disconnection, thereby disconnecting the loop between the motor and the motor controller, and preventing the power tube in the motor controller from burning out.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 is a structural cross-sectional view of an actuator according to an embodiment of the present invention;

[0035] Figure 2 is a structural cross-sectional view of the actuator according to an embodiment of the present invention when the moving member extends out of the accommodating cavity;

[0036] Figure 3 is a partial structural schematic diagram of an actuator according to an embodiment of the present invention;

[0037] Figure 4 is a partial structural exploded view of an actuator according to an embodiment of the present invention;

[0038] Figure 5 is a top view of a reinforcement member according to an embodiment of the present invention;

[0039] Figure 6 is a front view of a reinforcement member according to an embodiment of the present invention;

[0040] Figure 7 is a structural cross-sectional view of an actuator according to an embodiment of the present invention;

[0041] Figure 8 is a schematic structural diagram of an actuator assembly according to an embodiment of the present invention;

[0042] Fig. 9 is a structural exploded view of an actuator assembly according to an embodiment of the present invention;

[0043] Fig.10 is a schematic structural diagram of a conductive member according to an embodiment of the present invention.

[0044] Reference numerals: actuator 1,

[0045] Shell 10, accommodating chamber 101, first side wall 11, first opening 12, through hole 13, second side wall 14, moving part 20, sealing part 21, annular groove 211, concave surface 22,

[0046] reinforcement 30, collar 301, second opening 32, explosive device 40, fuse 41, first electrical connection line 411, second electrical connection line 412, detonator 42, fixed support part 50, first fixed part 51, second fixed part 52,

[0047] Actuator assembly 7, housing 71, conductive member 72, opening 721, first conductive sheet 724, second conductive sheet 725, weak area 726, groove 727,

[0048] Insulated gate bipolar transistor 73 , three-phase magnetic ring 74 , current Hall sensor 75 , and fuse 76 . DETAILED DESCRIPTION

[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0050] An actuator 1 according to an embodiment of the present invention will be described below with reference to the drawings.

[0051] like Figure 1-Figure 4 As shown, the actuator 1 according to the embodiment of the present invention includes a housing 10 , a moving member 20 , a reinforcing member 30 and an explosive device 40 .

[0052] The shell 10 defines an accommodating cavity 101, and the first side wall 11 of the shell 10 is provided with a first opening 12 connected to the accommodating cavity 101. The shell 10 is also provided with a through hole 13 connected to the accommodating cavity 101. The movable member 20 is movably arranged in the accommodating cavity 101, and the reinforcement member 30 covers at least a portion of the first side wall 11. The reinforcement member 30 is provided with a second opening 32, and the second opening 32 is connected to the first opening 12.

[0053] At least part of the explosive device 40 is disposed in the accommodating cavity 101 . The explosive device 40 is configured to generate an impact force after ignition to push the moving member 20 to move, and to allow part of the moving member 20 to extend out of the housing 10 through the through hole 13 , thereby achieving actuation of the moving member 20 .

[0054] The explosive device 40 includes 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 extends out of the housing 10 through the first opening 12 and the second opening 32 , so as to facilitate the ignition of the detonator 42 to be controlled by the fuse 41 .

[0055] The orthographic projections of the reinforcement 30 and the detonator 42 on the first side wall 11 at least partially overlap, so that when the detonator 42 is detonated, the first side wall 11 and the reinforcement 30 can jointly bear at least part of the impact force, thereby reducing the possibility of damage to the shell 10.

[0056] Specifically, when it is necessary to drive the movable part 20 to move, the control fuse 41 ignites the detonator 42, and the explosive device 40 is ignited. The impact force generated after the explosive device 40 is ignited pushes the movable part 20 to move. In this process, the shell 10 is also subjected to a large impact force. Since the first opening 12 is provided on the first side wall 11 of the shell 10, the structural strength of the first side wall 11 is relatively low, and it is easy to be deformed or broken due to the impact force. The reinforcement member 30 covers at least a portion of the first side wall 11, which is convenient for strengthening 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.

[0057] Therefore, the actuator 1 according to the embodiment of the present invention is provided with a reinforcement member 30 so that the reinforcement member 30 covers at least a portion of the first side wall 11 to enhance the structural strength of the first side wall 11, making the first side wall 11 less susceptible to damage, thereby reducing the possibility of the first side wall 11 being damaged by the impact force and reducing the possibility that the impact force will affect external parts.

[0058] An actuator 1 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0059] In some specific embodiments of the present invention, Figure 1-Figure 3 As shown, the actuator 1 includes a housing 10 , a moving member 20 , a reinforcing member 30 and an explosive device 40 .

[0060] In some embodiments of the present invention, Figure 1 , Figure 3As shown, the reinforcement 30 is covered on the outside of the shell 10 to cover at least a portion of the first side wall 11, so as to utilize the reinforcement 30 to enhance the structural strength of the first side wall 11, so that the first side wall 11 is not easily damaged, thereby reducing the possibility of the first side wall 11 being damaged by the impact force, and reducing the possibility that the impact force will affect external parts.

[0061] Among them, covering the reinforcement member 30 on the outside of the shell 10 will not occupy the space in the accommodating cavity 101 on the one hand, and on the other hand, it is easier to cover the reinforcement member 30 on the outside of the shell 10 than installing the reinforcement member 30 in the accommodating cavity 101.

[0062] In some embodiments of the present invention, the reinforcement 30 is a metal part so that the reinforcement 30 has sufficient strength, thereby enabling the reinforcement 30 to enhance the structural strength of the first side wall 11, making the first side wall 11 less susceptible to damage, thereby reducing the possibility of the first side wall 11 being damaged by impact force and reducing the possibility that the impact force will affect external parts.

[0063] In some embodiments, the reinforcement member 30 is made of steel.

[0064] In some embodiments of the present invention, the wall thickness of the reinforcement 30 is not less than the wall thickness of the first side wall 11, so that the structural strength of the reinforcement 30 is greater and the reinforcement 30 is not easily damaged, thereby enabling the reinforcement 30 to enhance the structural strength of the first side wall 11 and make the first side wall 11 not easily damaged, thereby reducing the possibility of the first side wall 11 being damaged by the impact force and reducing the possibility that the impact force will affect external parts.

[0065] In some embodiments, the wall thickness of the reinforcement 30 is equal to the wall thickness of the first side wall 11 ; or, the wall thickness of the reinforcement 30 is greater than the wall thickness of the first side wall 11 , and no further restrictions are imposed here.

[0066] In some embodiments of the present invention, Figure 1 , Figure 4-Figure 7 As shown, the second opening 32 and the first opening 12 are arranged opposite to each other 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, making it convenient to control the ignition of the detonator 42 through the fuse 41.

[0067] Among them, the size of the second opening 32 is smaller than that of the first opening 12, so as to reduce the impact of the second opening 32 on the structural strength of the reinforcement 30, so that the reinforcement 30 can enhance the strength of the first side wall 11, making the first side wall 11 less likely to be damaged, thereby reducing the possibility that the impact force will affect external parts.

[0068] In addition, the size of the second opening 32 is made smaller than the size of the first opening 12, so that the reinforcement 30 can cover a portion of the first opening 12, that is, the reinforcement 30 can cover a portion of the weak area of ​​the first side wall 11, so as to utilize the reinforcement 30 to enhance the structural strength of the weak area on the first side wall 11.

[0069] In some embodiments, the assembly steps of the actuator 1 are as follows: first, the detonator 42 and the fuse 41 are placed together 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 reinforcement 30 is installed to the outside of the shell 10, so that the reinforcement 30 covers at least a portion of the first side wall 11, and the fuse 41 extends out of the shell 10 from the second opening 32.

[0070] Since detonator 42 is placed into accommodating cavity 101 from first opening 12, the size of first opening 12 needs to be larger than that of detonator 42, while the size of fuse 41 is smaller than that of detonator 42, and second opening 32 only needs to be larger than that of fuse 41. Therefore, the size of second opening 32 is smaller than that of first opening 12, so as to reduce the influence of second opening 32 on the structural strength of reinforcement 30, so as to utilize reinforcement 30 to increase the structural strength of first side wall 11, make first side wall 11 not easily damaged, thereby reducing the possibility of first side wall 11 being damaged by impact force, and reducing the possibility of impact force affecting external parts.

[0071] In some embodiments, Figure 4 As shown, the fuse 41 includes a first electrical connection line 411 and a second electrical connection line 412. The first electrical connection line 411 and the second electrical connection line 412 are normally in a non-electrically connected state. When it is necessary to drive the movable part 20 to move, the first electrical connection line 411 and the second electrical connection line 412 are turned on. At this time, the current flows to the detonator 42 and ignites the detonator 42. When the detonator 42 is ignited, an impact force is generated to push the movable part 20 to move.

[0072] In some examples, the extension direction of the first electrical connection line 411 is parallel to the extension direction of the second electrical connection line 412, so that the first electrical connection line 411 and the second electrical connection line 412 are usually in a non-electrically connected state. The actuator 1 also includes a conductive part. When it is necessary to drive the moving member 20 to move, the conductive part connects the ends of the first electrical connection line 411 and the second electrical connection line 412 to conduct the first electrical connection line 411 and the second electrical connection line 412. At this time, the current flows to the detonator 42 to ignite the detonator 42. When the detonator 42 is ignited, an impact force is generated to push the moving member 20 to move.

[0073] In some optional embodiments of the present invention, Figure 4 , Figure 5As shown, the first opening 12 is located in the middle of the housing 10 to facilitate the placement of the detonator 42 in the middle of the accommodating cavity 101 .

[0074] The reinforcement 30 includes two annular rings 301, each of which is sleeved on the outer wall of the shell 10. The two rings 301 cooperate to define a second opening 32, so that when the reinforcement 30 is sleeved on the outer wall of the shell 10, space can be reserved for the fuse 41, so that the fuse 41 is located at the second opening 32.

[0075] In some embodiments, Figure 2-Figure 4 and Figure 6 As shown, the actuator 1 includes 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, and a through hole 13 is respectively provided on the two end walls of the accommodating cavity 101. The moving part 20 can move along the axial direction of the accommodating cavity 101 when subjected to impact force, the detonator 42 is located between the two moving parts 20, and the moving part 20 and the detonator 42 are arranged along 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 in a direction away from each other, so as to realize the synchronous movement of the two moving parts 20.

[0076] The housing 10 may also define a cubic or polygonal shaped receiving chamber 101 , which is not particularly limited here.

[0077] The axes of the first opening 12 and the second opening 32 extend along the radial direction of the accommodating chamber 101, and the fuse 41 extends along the radial direction of the accommodating chamber 101, that is, the extension direction of the fuse 41 is perpendicular to the axial direction of the accommodating chamber 101. The two collars 301 are respectively sleeved on the outer peripheral wall of the housing 10 from both sides of the axial direction of the accommodating chamber 101 along the axial direction of the accommodating chamber, and the fuse 41 is located in the second opening 32.

[0078] When detonator 42 is ignited, an impact force is generated around detonator 42. After receiving the impact force, the two movable parts 20 move away from each other along the axial direction of the accommodating cavity 101. At the same time, the first side wall 11 is also subjected to the impact force, so that the reinforcement 30 covers at least a portion of the first side wall 11. The structural strength of the first side wall 11 is increased by the reinforcement 30, thereby reducing the possibility of the first side wall 11 being damaged, so as to avoid the impact force generated when the detonator 42 is ignited from affecting external parts.

[0079] In some examples, in the axial direction of the accommodating cavity 101, the size of the reinforcement 30 is three to four times the size of the first opening 12, so as to utilize the reinforcement 30 to strengthen the structural strength of the first side wall 11 and reduce the possibility of the first side wall 11 being damaged, thereby reducing the possibility that the impact force will affect external parts.

[0080] In some embodiments of the present invention, Figure 7 As shown, the first opening 12 and the through hole 13 are distributed on the opposite side walls of the shell 10, and the reinforcement 30 covers the first side wall 11 and the second side wall 14 intersecting with the first side wall 11, so as to utilize the reinforcement 30 to increase the structural strength of the first side wall 11 and the second side wall 14, thereby reducing the possibility of the first side wall 11 and the second side wall 14 being damaged, so as to reduce the possibility that the impact force will affect external parts.

[0081] In some embodiments, Figure 7 As shown, the actuator 1 includes a moving part 20, the shell 10 defines a cylindrical accommodating chamber 101, the first side wall 11 is an end wall of the accommodating chamber 101, the second side wall 14 is a side wall of the accommodating chamber 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 and the first opening 12 are arranged opposite to each other along the axial direction of the accommodating chamber 101, the moving part 20 is located on the axial side of the detonator 42 in the accommodating chamber 101, and the moving part 20 can move along the axial direction of the accommodating chamber 101 when subjected to impact force.

[0082] In addition, the housing 10 may also define a cubic column or a polygonal column containing cavity 101, which is not limited here.

[0083] The axis of the first opening 12 and the second opening 32 extends along the axial direction of the accommodating chamber 101, the fuse 41 extends along the axial direction of the accommodating chamber 101, the reinforcement 30 is sheathed on a part of the first side wall 11 and the second side wall 14 of the shell 10 from one axial side of the accommodating chamber 101, and the fuse 41 is passed through the second opening 32 on the reinforcement 30.

[0084] When detonator 42 is ignited, an impact force is generated around detonator 42. After receiving the impact force, movable member 20 moves along the axial direction of accommodating chamber 101 in a direction away from detonator 42. At the same time, first side wall 11 and second side wall 14 are also affected by the impact force, so that reinforcement member 30 covers a portion of first side wall 11 and second side wall 14, so as to utilize reinforcement member 30 to increase the structural strength of first side wall 11 and second side wall 14, thereby reducing the possibility of first side wall 11 and second side wall 14 being damaged, thereby reducing the possibility that the impact force will affect external parts.

[0085] In some embodiments, the orthographic projections of the reinforcement 30 and the detonator 42 on the second side wall 14 at least partially overlap, so that when the detonator 42 is detonated, the second side wall 14 and the reinforcement 30 can jointly bear at least part of the impact force, thereby reducing the possibility of damage to the shell 10.

[0086] In some embodiments of the present invention, Figure 1As shown, the actuator 1 also includes a fixed support portion 50, which is at least partially fixed to the outside of the shell 10, and the reinforcement member 30 is located between the fixed support portion 50 and the shell 10, so that the fixed support portion 50 can be used to fix the reinforcement member 30 to the outside of the shell 10 to prevent the reinforcement member 30 from falling off the shell 10.

[0087] In some optional embodiments of the present invention, Figure 1 , Figure 4 As shown, the fixed support portion 50 wraps at least a portion of the fuse 41 to close the first opening 12 and the second opening 32, thereby preventing the impact force generated when the detonator 42 is ignited from affecting external parts from the first opening 12 and the second opening 32, and preventing the gunpowder residue formed when the detonator 42 is ignited from leaking.

[0088] In addition, by wrapping a portion of the fuse 41 with the fixed support portion 50, on the one hand, the position of the fuse 41 can be limited, and on the other hand, the gap between the first opening 12 and the fuse 41 and the gap between the second opening 32 and the fuse 41 can be filled, thereby further strengthening the overall structure of the shell 10.

[0089] In some specific embodiments of the present invention, the fixing support portion 50 is formed as a resin part, so that the fixing support portion 50 can be adaptively formed into a more complex shape to adapt to the shapes of the shell 10 and the reinforcement 30, thereby fixing the reinforcement 30 on the shell 10.

[0090] In some embodiments, a portion of the fixed support portion 50 is located within the accommodating cavity 101 to fix the position of the detonator 42, wherein the liquid resin enters the accommodating cavity 101 from the first opening 12 and the second opening 32. After the resin solidifies, it can fix the position of the detonator 42 in the accommodating cavity 101 and cover the periphery of the reinforcement 30 and the shell 10 to fix the reinforcement 30.

[0091] In some optional embodiments of the present invention, Figure 2 As shown, the fixed support portion 50 includes a first fixed portion 51 and a second fixed portion 52. The second fixed portion 52 is covered on the outside of the shell 10. One end of the first fixed portion 51 is connected to the second fixed portion 52, and the other end extends into the accommodating cavity 101 to be connected to the detonator 42 to fix the position of the detonator 42 in the accommodating cavity 101.

[0092] In some embodiments, the reinforcement 30 is covered on the shell 10, the second fixing portion 52 is covered on the shell 10 and the reinforcement 30, the size of the first fixing portion 51 is larger than the size of the first opening 12, and the size of the second fixing portion 52 is larger than the size of the second opening 32. That is, the reinforcement 30 and the first side wall 11 are clamped between the first fixing portion 51 and the second fixing portion 52 to fix the second fixing portion 52 to the outside of the shell 10, fix the first fixing portion 51 in the accommodating cavity 101, and use the first fixing portion 51 to fix the position of the detonator 42 in the accommodating cavity 101.

[0093] The first fixing portion 51 is used to fix the position of the detonator 42 in the accommodating chamber 101, so that there is no need to separately set a support bracket in the accommodating chamber 101, which is convenient for reducing the number of parts in the actuator 1 and reducing the steps of installing the support bracket into the accommodating chamber 101.

[0094] In some specific embodiments, the detonator 42 is installed in the accommodating cavity 101 along the first opening 12, the reinforcement 30 is covered outside the shell 10, and the fixed support portion 50 is formed integrally with a resin material, so that the first fixing portion 51 of the fixed support portion 50 extends into the accommodating cavity 101 to fix the position of the detonator 42 in the accommodating cavity 101, and the second fixing portion 52 is covered on the reinforcement 30 and the shell 10 to fix the fixed support portion 50 and the reinforcement 30 outside the shell 10.

[0095] In some embodiments of the present invention, when the detonator 42 is ignited, a large amount of gas is released, causing the air pressure in the accommodating chamber 101 to increase, thereby generating an impact force on the moving part 20 to drive the moving part 20 to move, thereby achieving braking of the moving part 20.

[0096] In some embodiments, the detonator 42 includes at least one of sodium azide (NaN3) and ammonium nitrate (NH4NO3). When the detonator 42 is ignited, the detonator 42 releases a large amount of nitrogen. At this time, the air pressure in the accommodating chamber 101 increases, thereby generating an impact force on the moving part 20 to drive the moving part 20 to move, thereby achieving braking of the moving part 20.

[0097] In some embodiments, Figure 1 As shown, a seal 21 is provided on the moving part 20, and the seal 21 is used to seal the gap between the moving part 20 and the inner wall of the accommodating chamber 101, so as to reduce gas leakage, so that when the detonator 42 is ignited and releases gas, the moving part 20 will be subjected to sufficient impact force, thereby enabling the moving part 20 to move.

[0098] In some examples, such as Figure 4As shown, an annular groove 211 is provided on the outer periphery of the moving part 20, and the sealing part 21 is an annular sealing part 21. The sealing part 21 is arranged in the annular groove 211 to seal the gap between the moving part 20 and the inner wall of the accommodating chamber 101, so as to prevent the gas released when the detonator 42 is ignited from leaking from the gap between the moving part 20 and the inner wall of the accommodating chamber 101.

[0099] In some embodiments of the present invention, Figure 2 , Figure 4 As shown, the size of the through hole 13 is slightly larger than the size of the moving part 20, so that the moving part 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 will not be 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.

[0100] In some embodiments of the present invention, Figure 2 As shown, the shell 10 defines a cylindrical accommodating chamber 101, and the moving member 20 is located on one side of the detonator 42 in the axial direction of the accommodating chamber 101. The end of the moving member 20 facing the detonator 42 has a concave surface 22, and the concave surface 22 is recessed in the direction away from the detonator 42. When the detonator 42 is ignited and releases the impact force, the concave surface 22 can change the direction of the impact force so that the moving member 20 is subjected to the impact force along the axial direction of the accommodating chamber 101, thereby enabling the moving member 20 to move along the axial direction of the accommodating chamber 101 in the direction away from the detonator 42 when subjected to the impact force.

[0101] Attached below Figure 8-Figure 10 An actuator assembly 7 according to an embodiment of the present invention is described.

[0102] The actuator assembly 7 according to the embodiment of the present invention comprises the actuator 1 according to the above-mentioned embodiment of the present invention and a conductive member 72 .

[0103] The impact force pushes the moving member 20 out of the housing 10 and cooperates with the conductive member 72 to break the conductive member 72 , thereby disconnecting the circuit on the conductive member 72 .

[0104] Specifically, when it is necessary to disconnect the circuit on the conductive member 72, the fuse 41 ignites the detonator 42. At this time, the movable member 20 is impacted and moves toward the conductive member 72. The movable member 20 hits the conductive member 72 to break the conductive member 72, thereby disconnecting the circuit on the conductive member 72.

[0105] According to the actuator assembly 7 of the embodiment of the present invention, by utilizing the actuator 1 according to the above-mentioned embodiment of the present invention, a reinforcement member 30 is arranged so that the reinforcement member 30 covers at least a portion of the first side wall 11 to enhance the structural strength of the first side wall 11, so that the first side wall 11 is not easily damaged, thereby reducing the possibility of the first side wall 11 being damaged by the impact force and reducing the possibility that the impact force will affect external parts.

[0106] In some embodiments of the present invention, Fig.10 As shown, the conductive member 72 is provided with a through hole 721 that penetrates the thickness of the conductive member 72 to form a weak area 726 on the conductive member 72. The weak area 726 is arranged corresponding to the moving member 20 so that when the moving member 20 is moved by an impact force, the weak area 726 can be easily destroyed, thereby disconnecting the circuit on the conductive member 72.

[0107] 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. When the movable member 20 is subjected to an impact force and moves, and the weak area 726 is damaged, the current flowing from the electrical input end to the electrical output end can be disconnected, thereby disconnecting the circuit on the conductive member 72.

[0108] In some embodiments, the conductive member 72 includes a first conductive sheet 724, a second conductive sheet 725 and a weak zone 726. The electrical input end is located at an end of the first conductive sheet 724 away from the weak zone 726, and the electrical output end is located at an end of the second conductive sheet 725 away from the weak zone 726. In the thickness direction of the conductive member 72, the projection of the weak zone 726 is crescent-shaped, that is, the sizes of the two ends of the weak zone 726 are small. The first end of the weak zone 726 is connected to the first conductive sheet 724 so that the strength of the connection between the weak zone 726 and the first conductive sheet 724 is small. The second end of the weak zone 726 is connected to the second conductive sheet 725 so that the strength of the connection between the weak zone 726 and the second conductive sheet 725 is small.

[0109] Among them, the weak zone 726 includes a plane and a curved surface, one end of the curved surface is connected to one end of the plane to form a first end of the weak zone 726, and the other end of the curved surface is connected to the other end of the plane to form a second end of the weak zone 726. The plane is set toward the moving part 20, and when the moving part 20 is subjected to impact force, the moving part 20 contacts the plane.

[0110] The moving part 20 can more easily destroy the connection between the first end of the weak area 726 and the first conductive sheet 724, and\or more easily destroy the connection between the second end of the weak area 726 and the second conductive sheet 725, so as to disconnect the electrical connection between the first conductive sheet 724 and the second conductive sheet 725, thereby disconnecting the circuit on the conductive part 72.

[0111] In some examples, such as Fig.10As shown, two grooves 727 are further provided on the conductive member 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 at the connection between the weak area 726 and the first conductive sheet 724, and reduce the connection strength at the connection between the weak area 726 and the second conductive sheet 725.

[0112] In some embodiments of the present invention, Figure 1 , Figure 8 and Fig. 9 As shown, the actuator assembly 7 includes three conductive members 72, and the actuator 1 includes at least two moving members 20. Each moving member 20 is arranged corresponding to one of the conductive members 72 so that when it moves under impact force, the corresponding conductive member 72 breaks, thereby disconnecting the circuit.

[0113] In some embodiments, three conductive members 72 form a three-phase circuit, and each movable member 20 is disposed corresponding to one of the conductive members 72 so that when the movable member 20 is moved by an impact force, the corresponding conductive member 72 is broken, thereby disconnecting the three-phase circuit.

[0114] In some embodiments, the actuator 1 includes two moving parts 20. When the detonator 42 is ignited, the two moving parts 20 are subjected to the impact force and move away from each other. The two moving parts 20 are located between two conductive parts 72. When the detonator 42 is ignited, the two moving parts 20 are subjected to the impact force and move away from each other. The moving parts 20 can destroy the corresponding conductive parts 72, thereby destroying the two conductive parts 72 and disconnecting the circuit.

[0115] In some other embodiments of the present invention, there is only one moving member 20, and the moving member 20 is used to be arranged corresponding to at least two conductive members 72, so that when the moving member 20 is moved by an impact force, the at least two conductive members 72 are broken, thereby disconnecting the circuit.

[0116] In some embodiments, when detonator 42 is ignited, moving part 20 is impacted and moves in a direction away from detonator 42, wherein two conductive parts 72 are located on the side of moving part 20 away from detonator 42, and the two conductive parts 72 can be overlapped. When detonator 42 is ignited and moving part 20 is impacted and moves in a direction away from detonator 42, moving part 20 can destroy the two corresponding conductive parts 72, thereby disconnecting the circuit.

[0117] In some embodiments of the present invention, the end of the moving member 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 member 72.

[0118] In some embodiments of the present invention, the actuator assembly 7 also includes a shell 71, the shell 10 of the actuator 1 is fixed to the shell 71, the conductive member 72 is located on the outside of the shell 10, the shell 71 defines a placement opening, the edge of the placement opening is provided with a buckle, and the actuator 1 is buckled and fixed at the placement opening.

[0119] In addition, the actuator 1 may also be fixed to the housing 71 by screws, or the housing 10 and the housing 71 may be integrally injection molded, and no further restrictions are imposed herein.

[0120] In some embodiments of the present invention, Figure 8 , Fig. 9 As shown, the fuse 41 is controlled by a current signal to ignite the detonator 42, the housing 71 is an injection molded housing 71, and the actuator assembly 7 also includes a control unit, an insulated gate bipolar transistor 73, a three-phase magnetic ring 74 and a current Hall sensor 75.

[0121] The three-phase magnetic ring 74 is used to sense the current magnetic field at the conductive member 72. The current Hall sensor 75 is provided on the conductive member 72 to monitor the intensity and direction of the current on the conductive member 72 and transmit the 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, short circuit, etc. When an abnormal condition is detected, the control unit sends a signal to the actuator, and the actuator controls the fuse 41 to ignite the detonator 42. When the moving member 20 is subjected to the impact force, it moves and breaks the conductive member 72 to disconnect the circuit on the conductive member 72, thereby isolating the fault current and ensuring the safety of the system.

[0122] Among them, the actuator assembly 7 also includes a safety component 76, which is fixed to the conductive component 72 by screws or welding and is connected in parallel with the weak area 726. When the weak area 726 is destroyed and the conductive component 72 is broken, the current flows through the safety component 76 and disconnects the safety component 76. The safety component 76 is used to release the instantaneous current on the conductive component 72.

[0123] In summary, by integrating the three conductive parts 72, the actuator 1, the safety part 76, the three-phase magnetic ring 74 and the current Hall sensor 75 into an integrated module, the organic combination of multifunctional components is achieved, and the high-sensitivity monitoring and active cutting of the current are achieved. When the actuator component 7 is applied to the motor of the new energy vehicle, the safety performance of the new energy vehicle is significantly improved. By integrating multiple functional modules, while meeting the safety performance requirements, the structure of the motor control system safety module is greatly simplified, the integration of the motor control system is improved, and the safety and reliability of the motor control system are guaranteed.

[0124] In some embodiments, the current Hall sensor 75 may be a current Hall sensor 75 without a magnetic core, or a current Hall sensor 75 with a magnetic core, and no further limitation is given here.

[0125] In some embodiments, the insulated gate bipolar transistor 73 may be replaced with other power semiconductors, such as gallium nitride (GaN) and silicon carbide (SiC), without further limitation.

[0126] In some embodiments, the current Hall sensor 75 is disposed at the end of the conductive member 72 facing the three-phase magnetic ring 74. Of course, the current Hall sensor 75 can also be disposed at other positions, and its position 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.

[0127] In some embodiments, the actuator assembly 7 further comprises an injection molded part, and the insulated gate bipolar transistor 73 and the three-phase magnetic ring 74 are located inside the injection molded part.

[0128] The insulated gate bipolar transistor 73 may be fixed to the injection molded part by screws or by welding, and no further restrictions are imposed here.

[0129] The following describes a motor controller according to an embodiment of the present invention, including the actuator assembly 7 of the above-mentioned embodiment of the present invention and at least three-phase bridge arms, each phase bridge arm includes 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 a phase winding of the motor.

[0130] According to the motor controller of the embodiment of the present invention, by utilizing the actuator assembly 7 according to the above-mentioned embodiment of the present invention, the explosive device 40 is used to drive the moving part 20 to move, so that the moving part 20 destroys the conductive part 72, thereby achieving the circuit disconnection, so as to disconnect the loop between the motor and the motor controller and prevent the power tubes in the motor controller from burning out.

[0131] The following describes a motor assembly according to an embodiment of the present invention, including a motor controller according to the above embodiment of the present invention.

[0132] According to the motor assembly of the embodiment of the present invention, by utilizing the motor controller according to the above-mentioned embodiment of the present invention, the explosive device 40 is used to drive the moving part 20 to move, so that the moving part 20 destroys the conductive part 72, thereby achieving circuit disconnection, thereby disconnecting the loop between the motor and the motor controller, and preventing the power tubes in the motor controller from burning out.

[0133] A vehicle according to an embodiment of the present invention is described below, including a motor assembly according to the above embodiment of the present invention.

[0134] According to the vehicle of the embodiment of the present invention, by utilizing the motor assembly according to the above-mentioned embodiment of the present invention, the explosive device 40 is used to drive the moving part 20 to move, so that the moving part 20 destroys the conductive part 72, thereby achieving circuit disconnection, thereby disconnecting the loop between the motor and the motor controller, and preventing the power tube in the motor controller from burning out.

[0135] Other components and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0136] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0137] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0138] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0139] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0140] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An actuator, It is characterized in that include: A housing (10), the housing (10) defining a receiving cavity (101), a first side wall (11) of the housing (10) being provided with a first opening (12) in communication with the receiving cavity (101), and the housing (10) being further provided with a through hole (13) in communication with the receiving cavity (101); A moving member (20), the moving member (20) being arranged in the accommodating cavity (101); a reinforcing member (30), the reinforcing member (30) covering at least a portion of the first side wall (11), the reinforcing member (30) being provided with a second opening (32), the second opening (32) being in communication with the first opening (12); an explosive device (40), the explosive device (40) being at least partially disposed in the accommodating cavity (101), the explosive device (40) being configured to generate an impact force after ignition to push the moving member (20) to move and to cause a portion of the moving member (20) to extend out of the housing through the through hole (13), the explosive device (40) comprising a fuse (41) and a detonator (42), one end of the fuse (41) being connected to the detonator (42), and the other end of the fuse (41) extending out of the housing (10) through the first opening (12) and the second opening (32); The orthographic projections of the reinforcement member (30) and the detonator (42) on the first side wall (11) at least partially overlap; the second opening (32) and the first opening (12) are arranged opposite to each other 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).

2. The actuator according to claim 1, It is characterized in that The reinforcement member (30) is covered on the outside of the shell (10) to cover at least a portion of the first side wall (11).

3. The actuator according to claim 1, It is characterized in that The reinforcement member (30) is a metal member.

4. The actuator according to claim 1, It is characterized in that The wall thickness of the reinforcement member (30) is not less than the wall thickness of the first side wall (11).

5. The actuator according to claim 1, It is characterized in that The first opening (12) is located in the middle of the shell (10), and the reinforcement member (30) comprises two annular collars (301), each of the collars (301) being sleeved on the outer peripheral wall of the shell (10), and the two collars (301) cooperate to define the second opening (32).

6. The actuator according to claim 1, It is characterized in that The first opening (12) and the through hole (13) are distributed on opposite side walls of the shell (10), and the reinforcement member (30) covers the first side wall (11) and a second side wall (14) intersecting the first side wall (11).

7. The actuator according to claim 6, It is characterized in that The orthographic projections of the reinforcement member (30) and the detonator (42) on the second side wall (14) at least partially overlap.

8. An actuator according to any one of claims 1 to 7, It is characterized in that It also comprises a fixed support portion (50), wherein the fixed support portion (50) is at least partially fixed to the outside of the shell (10), and the reinforcement member (30) is located between the fixed support portion (50) and the shell (10).

9. The actuator according to claim 8, It is characterized in that The fixed support portion (50) at least wraps a portion of the fuse (41).

10. The actuator according to claim 9, It is characterized in that The fixing support portion (50) is formed as a resin part.

11. The actuator according to claim 8, It is characterized in that The fixed support portion (50) comprises a first fixed portion (51) and a second fixed portion (52), the second fixed portion (52) being covered on the shell (10), one end of the first fixed portion (51) being connected to the second fixed portion (52), and the other end of the first fixed portion (51) extending into the accommodating cavity (101) to be connected to the detonator (42).

12. An actuator assembly, It is characterized in that include: Conductive member (72); An actuator, wherein the actuator is an actuator according to any one of claims 1 to 11; The impact force pushes the moving part (20) to extend out of the housing (10) and cooperate with the conductive part (72) to cause the conductive part (72) to break.

13. The actuator assembly according to claim 12, It is characterized in that 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).

14. The actuator assembly according to claim 12, It is characterized in that comprising three conductive members (72), The actuator comprises at least two moving members (20), each of the moving members (20) being arranged corresponding to one of the conductive members (72) so as to cause the corresponding conductive member (72) to break when the moving member (20) is moved by an impact force; or There is one moving member (20), and the moving member (20) is used to be arranged corresponding to at least two conductive members (72) so as to cause at least two conductive members (72) to break when the moving member is moved by an impact force.

15. A motor controller, It is characterized in that Comprising an actuator assembly according to any one of claims 12-14.

16. A motor assembly, It is characterized in that Includes the motor controller as described in claim 15.

17. A vehicle, It is characterized in that Includes the motor assembly as claimed in claim 16.

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