Detonating actuator, motor controller, powertrain and vehicle

Abstract

A detonating actuator. The detonating actuator (100) comprises: a housing (1), the housing (1) being provided with an opening (11); a detonating device (3), the detonating device (3) being arranged in the housing (1); and a piston (2), the piston (2) being movably arranged in the housing (1). After being detonated, the detonating device (3) can drive part of the piston (2) to extend out of the housing (1) from the opening (11), and part of the piston (2) is in interference fit with the opening (11). Further provided are a motor controller, a powertrain and a vehicle.

Description

Initiation actuator, motor controller, power assembly and vehicle

[0001] Cross-reference to related applications

[0002] The present application is based on and claims priority to Chinese Patent Application No. 202411069251.5, filed on August 6, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

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

[0004] The initiation actuator is a product for protecting the circuit when the circuit overcurrent, which pushes the piston to cut off the load component through the shock wave generated after the initiation, to achieve the effect of disconnecting the circuit. However, the initiation actuator is installed in the motor controller, which is used to cut off the connection between the motor and the motor controller when the three-phase bridge arm is short-circuited, but the existing initiation actuator cannot cut off the load component after initiation. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an initiation actuator, which effectively avoids the retraction of the piston moving towards the direction away from the load component, thereby ensuring the piston to cut off the load component and ensuring the circuit disconnecting effect of the initiation actuator.

[0006] The present application also provides a motor controller, which comprises the above-mentioned initiation actuator.

[0007] The present application also provides a power assembly, which comprises the above-mentioned motor controller.

[0008] The present application also provides a vehicle, which comprises the above-mentioned power assembly.

[0009] According to the initiation actuator of the present application, the initiation actuator comprises a housing having an opening, an initiation device arranged in the housing, and a piston movably arranged in the housing, wherein the initiation device can drive a part of the piston to extend out of the housing from the opening and the part of the piston is in interference fit with the opening after the initiation of the initiation device.

[0010] According to the detonation actuator, the shell has an opening, the detonation device is arranged in the shell, and the piston is movably arranged in the shell. After the detonation device is detonated, the part of the piston that can drive the piston is extended out of the shell from the opening and is in interference fit with the opening, so that the piston is effectively prevented from moving back in the direction away from the load-carrying component, thereby ensuring that the piston cuts off the load-carrying component and ensuring the open-circuit effect of the detonation actuator. In addition, the residue generated after the detonation device is detonated is prevented from leaking from the gap between the piston and the opening, thereby reducing the subsequent cleaning step of the residue and improving safety.

[0011] In some embodiments of the present application, the piston comprises: a first section, the radial dimension of the first section being greater than the hole diameter of the opening along the radial direction of the piston; a second section, the second section being located on the side of the first section away from the detonation device, the radial dimension of the second section being less than the hole diameter of the opening along the radial direction of the piston; and a connecting section, the connecting section being located between the first section and the second section, the dimension of the connecting section along the radial direction of the piston gradually decreasing in the direction from the first section to the second section, and the connecting section being in interference fit with the opening after the detonation device is detonated.

[0012] In some embodiments of the present application, the connecting section has an arc-shaped profile line that is concave toward the central axis of the piston in the cross section passing through the central axis of the piston.

[0013] In some embodiments of the present application, the first section has a sealing groove extending along the circumferential direction of the piston on the peripheral wall of the first section, and the detonation actuator further comprises a sealing ring located in the sealing groove and in sealing connection with the shell.

[0014] In some embodiments of the present application, after the detonation device is detonated, the end of the piston close to the detonation device is deformed radially in the direction away from the central axis of the piston and is in interference connection with the shell.

[0015] In some embodiments of the present application, the end surface of the piston facing the detonation device is provided with a recess, and the open mouth of the recess faces the detonation device.

[0016] In some embodiments of the present application, after the detonation device is detonated, the shell forming the opening is deformed in the direction of movement of the piston.

[0017] In some embodiments of the present application, the detonation device comprises: a base, the base being located in the shell and connected with the shell, the base having a detonation cavity, the detonation cavity having an exhaust port, the exhaust port being arranged opposite to the piston; a powder cartridge, the powder cartridge being located in the detonation cavity; and a fuse, one end of the fuse being connected with the powder cartridge and the other end of the fuse extending out of the shell through the base.

[0018] In some embodiments of the present application, the piston is a plurality of spaced-apart pistons, the exhaust port is a plurality of exhaust ports corresponding to the plurality of pistons, the plurality of exhaust ports are respectively arranged opposite to the plurality of pistons, and the opening is a plurality of openings corresponding to the plurality of pistons.

[0019] In some embodiments of the present application, the piston is a non-conductive member; and / or the housing is a metal member.

[0020] The motor controller according to embodiments of the present application comprises: at least three-phase conductive sheet rows for connecting the motor; and the above-mentioned detonation actuator, which is used to cut off at least two-phase conductive sheet rows in the at least three-phase conductive sheet rows.

[0021] The motor controller according to embodiments of the present application, the detonation actuator is used to cut off at least two-phase conductive sheet rows in the at least three-phase conductive sheet rows, so as to cut off the connection between the motor and the motor controller, and further realize the open circuit effect of the motor controller. At the same time, after the detonation device is detonated, the part of the piston can be driven to extend out of the housing from the opening and the part of the piston is in interference fit with the opening, so as to effectively avoid the piston from retracting when moving in the direction away from the load-carrying component, thereby ensuring that the piston cuts off the load-carrying component and ensuring the open circuit effect of the detonation actuator, and avoiding the leakage of residues generated after the detonation device is detonated from the gap between the piston and the opening, avoiding reducing the subsequent cleaning step of the residues, and improving the safety and reliability of the motor controller.

[0022] The power assembly according to embodiments of the present application comprises the above-mentioned motor controller.

[0023] The power assembly according to embodiments of the present application, the motor controller is provided, the detonation actuator is used to cut off at least two-phase conductive sheet rows in the at least three-phase conductive sheet rows, so as to cut off the connection between the motor and the motor controller, and further realize the open circuit effect of the motor controller. At the same time, after the detonation device is detonated, the part of the piston can be driven to extend out of the housing from the opening and the part of the piston is in interference fit with the opening, so as to effectively avoid the piston from retracting when moving in the direction away from the load-carrying component, thereby ensuring that the piston cuts off the load-carrying component and ensuring the open circuit effect of the detonation actuator, and avoiding the leakage of residues generated after the detonation device is detonated from the gap between the piston and the opening, avoiding reducing the subsequent cleaning step of the residues, and improving the safety and reliability of the motor controller.

[0024] The vehicle according to embodiments of the present application comprises the above-mentioned power assembly.

[0025] According to the vehicle of the embodiment of the present application, the power assembly is arranged, and the detonation actuator is used to realize the disconnection of three-phase alternating current between the motor controller and the motor, so that the connection between the motor and the motor controller can be cut off, and then the open circuit effect of the motor controller is realized. Meanwhile, after the detonation device is detonated, the part of the piston that can drive the piston to extend out of the shell from the opening and the part of the piston that is in interference fit with the opening, effectively avoid the piston from moving back in the direction away from the load-carrying component, thereby ensuring that the piston cuts off the load-carrying component and ensuring the open circuit effect of the detonation actuator, and avoiding the leakage of residues generated after the detonation device is detonated from the gap between the piston and the opening, avoiding reducing the subsequent cleaning step of the residues, and improving the safety and reliability of the vehicle.

[0026] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0027] 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 accompanying drawings, in which:

[0028] Fig. 1 is a structural schematic diagram of a detonation actuator according to an embodiment of the present application, wherein a detonation device is not detonated;

[0029] Fig. 2 is a structural schematic diagram of a detonation actuator according to an embodiment of the present application, wherein the detonation device is detonated and in an intermediate state;

[0030] Fig. 3 is a structural schematic diagram of a detonation actuator according to an embodiment of the present application, wherein the detonation device is detonated and in a final state;

[0031] Fig. 4 is a structural schematic diagram of a vehicle according to an embodiment of the present application.

[0032] Reference signs: W, vehicle; Y, power assembly; Z, motor controller; 100, detonation actuator; 1, shell; 11, opening; 2, piston; 21, first section; 211, recess; 2111, open end; 213, sealing groove; 22, second section; 23, connecting section; 3, detonation device; 31, base; 311, detonation cavity; 312, exhaust port; 32, cartridge; 33, fuse; 4, sealing ring; 5, fixed component. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations represent 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 the present application and cannot be understood as a limitation of the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "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 devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features defined with "first", "second" can be 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 specified.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" 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, or it can be connected inside 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.

[0036] The detonation actuator 100 according to the embodiments of the present application is described below with reference to the accompanying drawings.

[0037] As shown in FIGS. 1-3, the detonation actuator 100 according to the embodiments of the present application includes a housing 1, a detonation device 3 and a piston 2. Among them, the housing 1 has an opening 11, the detonation device 3 is arranged in the housing 1, the piston 2 is movably arranged in the housing 1, and the part of the piston 2 driven by the detonation device 3 after detonation can extend out of the housing 1 from the opening 11 and the part of the piston 2 is in interference fit with the opening 11.

[0038] It can be understood that when the detonation device 3 is detonated, the explosive material inside it will burn or explode rapidly, releasing a huge amount of energy. These energies rapidly spread in the form of shock waves in the housing 1, and the piston 2 is rapidly moved towards the direction of the load-carrying component under the action of the shock waves, so that the part of the piston 2 extends out of the housing 1 from the opening 11 and cuts off the load-carrying component, thereby disconnecting the power supply end and the load end connected by the load-carrying component, and further realizing the open circuit effect of the detonation actuator 100.

[0039] After the detonation device 3 is detonated, the partial piston 2 is in interference fit with the opening 11, effectively avoiding the piston 2 from moving back in the direction away from the load-carrying component (i.e. in the direction of the detonation device 3) due to the pressure drop after the detonation device 3 explodes or the reverse force generated when the piston 2 hits the load-carrying component to be cut off, thereby ensuring that the piston 2 cuts off the load-carrying component and remains in the position between the two sections of the cut-off load-carrying component, further ensuring the open circuit effect of the detonation actuator 100 and improving the reliability of the detonation brake. At the same time, through the interference fit between the partial piston 2 and the opening 11, the leakage of residues generated after the detonation of the detonation device 3 from the gap between the piston 2 and the opening 11 is avoided, the re-combustion or explosion of unburned combustible substances in the detonation device 3 outside the housing 1 is avoided, the safety is improved, and the subsequent cleaning step of the residues is avoided, the downtime, maintenance and cleaning time caused by the leakage of residues are reduced, which helps to reduce production costs and improve overall operating efficiency.

[0040] In addition, the opening 11 is provided to ensure that part of the piston 2 can protrude out of the housing 1, to ensure that the piston 2 cuts off the load-carrying component, and after the detonation device 3 is detonated, the piston 2 is prevented from rebounding by the interference fit between the partial piston 2 and the opening 11. Thus, the detonation actuator 100 of the present application has a simple overall structure, is easy to process and install, and effectively reduces costs while ensuring the open circuit effect.

[0041] Compared with the prior art actuator and the load-carrying component being a single piece, the detonation actuator 100 of the present application is a separate mechanism from the load-carrying component, which facilitates the layout of the detonation actuator 100, improves the space utilization of the equipment using the detonation actuator 100, and thus reduces the volume.

[0042] In the embodiments of the present application, the piston 2 is an elastically deformable member, so that after the detonation device 3 is detonated, the piston 2 can be deformed to ensure the reliability of the interference fit between the piston 2 and the opening 11.

[0043] In some embodiments, the piston 2 is a rubber member or a plastic member such as a PC (Polycarbonate) member.

[0044] In some embodiments, the load-carrying component is used to connect the motor and the motor controller Z. When the detonation device 3 is not detonated, the conductive sheet is not disconnected, so that the load-carrying component is normally energized, ensuring the electrical circuit communication between the motor controller Z and the motor, and thus the motor can work normally. When the current is abnormal and the detonation device 3 is detonated, the load-carrying component will be hit by the piston 2 and thus disconnected, so that the load-carrying component is open-circuited, thereby cutting off the circuit between the motor and the motor controller Z, thereby avoiding damage to the motor and the motor controller Z caused by abnormal current, and improving the overall safety.

[0045] According to the detonation actuator 100 provided by the embodiment of the present application, the shell 1 has an opening 11, the detonation device 3 is arranged in the shell 1, and the piston 2 is movably arranged in the shell 1. After the detonation of the detonation device 3, the part of the piston 2 driven by the detonation device 3 extends out of the shell 1 from the opening 11 and is in interference fit with the opening 11. The interference fit effectively prevents the piston 2 from retracting when moving in the direction away from the load-carrying component, thereby ensuring that the piston 2 cuts off the load-carrying component and ensuring the open-circuit effect of the detonation actuator 100. In addition, the leakage of residues generated after the detonation of the detonation device 3 from the gap between the piston 2 and the opening 11 is avoided, thereby reducing the subsequent cleaning steps of the residues and improving the safety.

[0046] In some embodiments of the present application, as shown in FIGS. 1-3, the piston 2 includes a first section 21, a second section 22, and a connecting section 23. In the radial direction of the piston 2, the radial dimension of the first section 21 is greater than the hole diameter of the opening 11, the second section 22 is located on the side of the first section 21 away from the detonation device 3, and the radial dimension of the second section 22 in the radial direction of the piston 2 is less than the hole diameter of the opening 11. The connecting section 23 is located between the first section 21 and the second section 22, and the dimension of the connecting section 23 in the radial direction of the piston 2 gradually decreases in the direction from the first section 21 to the second section 22. After the detonation of the detonation device 3, the connecting section 23 is in interference fit with the opening 11.

[0047] Therefore, after the detonation of the detonation device 3, the second section 22 extends out of the shell 1 from the opening 11 and cuts off the load-carrying component, thereby ensuring the open-circuit effect of the detonation actuator 100. At the same time, in the radial direction of the piston 2, the radial dimension of the first section 21 is greater than the hole diameter of the opening 11, thereby ensuring that part of the piston 2 is located in the shell 1 after the detonation of the detonation device 3, avoiding the piston 2 from completely rushing out, and thereby ensuring that the piston 2 cuts off the load-carrying component and improving the overall reliability.

[0048] In addition, during the process of driving the piston 2 to move in the direction away from the detonation device 3 after the detonation of the detonation device 3, the connecting section 23 is in contact with the opening 11 and deforms. In the direction from the first section 21 to the second section 22, the dimension of the connecting section 23 in the radial direction of the piston 2 gradually decreases, thereby ensuring that the connecting section 23 is in interference fit with the opening 11, avoiding the piston 2 from retracting when moving in the direction away from the load-carrying component, improving the reliability of the detonation actuator 100, and effectively dispersing stress during the movement of the piston 2, reducing the occurrence of stress concentration, and improving the stability and reliability of the overall structure of the piston 2.

[0049] It should be noted that the shape of the shell 1 of the present application can be a cylindrical body, a cubic column, or a multi-prism structure. At the same time, the shape of the second section 22 is the same as that of the shell 1.

[0050] In some embodiments of the present application, as shown in FIGS. 1-3, in the cross section of the center axis of the piston 2, the profile line of the connecting section 23 is an arc shape concave toward the center axis of the piston 2.

[0051] It can be understood that during the process of driving the piston 2 to move away from the detonation device 3 after the detonation device 3 is detonated, the connecting section 23 is in contact with the opening 11 and deforms, and through such an arrangement, it is further ensured that the connecting section 23 deforms, thereby ensuring that the connecting section 23 is in interference fit with the opening 11, and ensuring that the deformation amount of the connecting section 23 is greater than the deformation amount of the shell 1, thereby avoiding the piston 2 from rebounding while avoiding large deformation or rupture of the shell 1 forming the opening 11, and improving the overall reliability.

[0052] In some embodiments of the present application, as shown in FIGS. 1-3, the peripheral wall of the first section 21 has a sealing groove 213 extending in the circumferential direction of the piston 2, and the detonation actuator 100 further comprises a sealing ring 4 located in the sealing groove 213 and in sealing connection with the shell 1. Wherein the sealing ring 4 is located in the sealing groove 213 and in sealing connection with the shell 1. Thus, after the detonation device 3 is detonated, the sealing effect of the sealing ring 4 effectively prevents the shock wave generated by the detonation device 3 from leaking from the gap between the first section 21 and the shell 1, ensuring that the piston 2 cuts off the load-bearing component under the action of the shock wave, and ensuring the disconnection effect of the detonation actuator 100.

[0053] In some embodiments, the material of the sealing ring 4 is a material formed by rubber and synthetic resin.

[0054] In some embodiments of the present application, as shown in FIGS. 1-3, after the detonation device 3 is detonated, the end of the piston 2 close to the detonation device 3 is deformed radially toward the direction away from the center axis of the piston 2 and is in interference connection with the shell 1.

[0055] Thus, after the detonation device 3 is detonated, by the end of the piston 2 close to the detonation device 3 being deformed radially toward the direction away from the center axis of the piston 2 and being in interference connection with the shell 1, the contact friction between the piston 2 and the shell 1 is increased, further avoiding the piston 2 from retracting toward the direction away from the load-bearing component due to the decrease in air pressure after the detonation device 3 explodes and burns, thereby ensuring that the piston 2 cuts off the load-bearing component and ensuring the disconnection effect of the circuit of the detonation actuator 100.

[0056] In some embodiments of the present application, after the detonation device 3 is detonated, the first section 21 is deformed radially toward the direction away from the center axis of the piston 2 and is in interference connection with the shell 1.

[0057] It should be noted that the "piston 2 direction away from the central axis of the piston 2" can be understood as the radial outward direction along the central axis of the piston 2. When the shape of the piston 2 is a cubic cylinder or a multi-prism shape, the radial direction of the piston 2 refers to the radial direction of the circle with the center of the cross section perpendicular to the central axis direction of the piston 2 as the center.

[0058] In some embodiments of the present application, as shown in FIGS. 1-3, the end face of the piston 2 towards the detonator 3 is provided with a recess 211, and the open mouth 2111 of the recess 211 is towards the detonator 3. It can be understood that when the detonator 3 is detonated, a huge amount of energy is released in the form of a shock wave rapidly spreading in the shell 1, and by providing the end face of the piston 2 towards the detonator 3 with a recess 211, the open mouth 2111 of the recess 211 is towards the detonator 3, so that the shock wave enters the recess 211 and directly acts on the inner surface of the recess 211, thereby realizing the radial deformation of the end of the piston 2 close to the detonator 3 in the direction away from the central axis of the piston 2 and the interference fit connection with the shell 1.

[0059] In embodiments of the present application, the end face of the first section 21 towards the detonator 3 is provided with a recess 211, and the open mouth 2111 of the recess 211 is towards the detonator 3.

[0060] In some embodiments, as shown in FIGS. 1-3, after the detonator 3 is detonated, the radial deformation of the first section 21 in the direction away from the central axis of the recess 211 gradually increases from the bottom wall of the recess 211 to the open mouth 2111 of the recess 211. Thus, by such a design, the interference amount of the first section 21 with the shell 1 gradually increases from the bottom wall of the recess 211 to the open mouth 2111 of the recess 211, and the interference amount of the end face of the first section 21 towards the detonator 3 with the shell 1 is the largest. By such a design, further leakage of residues generated after the detonator 3 is detonated from the gap between the first section 21 and the shell 1 is avoided, further reducing downtime, maintenance and cleaning time caused by residue leakage, and improving the safety of the detonation actuator 100.

[0061] In some embodiments, as shown in FIGS. 1-3, the cross-sectional area of the recess 211 gradually increases from the bottom wall of the recess 211 to the open end 2111 of the recess 211. It can be understood that after the detonation of the detonation device 3, the shock wave enters the recess 211 from the open end 2111 of the recess 211 and propagates towards the bottom wall of the recess 211. Thus, by gradually increasing the cross-sectional area of the recess 211 from the bottom wall of the recess 211 to the open end 2111 of the recess 211, the energy of the shock wave is guided and concentrated, so that the energy of the shock wave entering the recess 211 is gradually concentrated and enhanced, further ensuring that the piston 2 is deformed radially towards the direction away from the central axis of the piston 2 and is connected with the shell 1 in interference, improving the reliability of the detonation brake.

[0062] In some embodiments, as shown in FIGS. 1-3, the bottom wall of the recess 211 is further provided with a groove. Thus, after the detonation of the detonation device 3, the shock wave enters the recess 211 from the open end 2111 of the recess 211 and propagates towards the groove, further guiding and concentrating the energy of the shock wave entering the recess 211 and the groove, further increasing the size of the piston 2 deformed radially along the central axis of the piston 2, thereby increasing the interference amount of the piston 2 with the shell 1, further improving the reliability of the detonation brake.

[0063] In some embodiments, as shown in FIGS. 1-3, before the detonation of the detonation device 3, the cross-sectional area of the groove is constant from the bottom wall of the groove to the bottom wall of the recess 211, and after the detonation of the detonation device 3, the cross-sectional area of the groove gradually increases from the bottom wall of the groove to the bottom wall of the recess 211. Or, before the detonation of the detonation device 3, the cross-sectional area of the groove gradually increases from the bottom wall of the groove to the bottom wall of the recess 211, and after the detonation of the detonation device 3, the cross-sectional area of the groove gradually increases from the bottom wall of the groove to the bottom wall of the recess 211 and is greater than the cross-sectional area before the detonation of the detonation device 3. Thus, various forms of the groove are realized to meet different needs of the detonation actuator 100, improving the versatility.

[0064] In some embodiments, the outer wall surface of the first section 21 and the inner wall surface of the shell 1 are attached. Thus, after the detonation of the detonation device 3, by such a setting, it is further ensured that the central axis of the first section 21 can be connected with the shell 1 in interference after being deformed radially, improving the reliability.

[0065] In some embodiments of the present application, as shown in FIGS. 1-3, the shell 1 forming the opening 11 is deformed towards the moving direction of the piston 2 after the detonation device 3 is detonated. It can be understood that during the process of driving the piston 2 to move away from the detonation device 3 after the detonation device 3 is detonated, part of the piston 2 extends out of the shell 1 from the opening 11, and due to the interference fit between the part of the piston 2 and the opening 11, the shell 1 forming the opening 11 is subjected to the impact of the piston 2, thereby realizing the deformation of the shell 1 forming the opening 11 towards the moving direction of the piston 2.

[0066] In embodiments of the present application, the hardness of the piston 2 is less than the hardness of the shell 1, so that after the detonation device 3 is detonated, the deformation amount of the shell 1 forming the opening 11 is less than the deformation amount of the piston 2, thereby realizing the interference fit between the piston 2 and the opening 11 while ensuring the integrity of the shell 1 and improving the overall reliability.

[0067] In some embodiments of the present application, the piston 2 is a non-conductor. In this way, the piston 2 is prevented from being electrically connected to the load-carrying component, thereby avoiding possible short circuit or current leakage problems, and the piston 2 is not affected by current corrosion or electrothermal aging, thereby improving the service life.

[0068] In some embodiments of the present application, the shell 1 is a metal component. In this way, the structural strength of the shell 1 is improved, and the shell 1 is protected from displacement, deformation or cracking under the action of the shock wave of the detonation device 3, thereby improving the reliability of the detonation actuator 100.

[0069] In embodiments of the present application, the shell 1 is formed into a head structure by a heat pressing process, and the opening 11 is formed in the center of the head structure, thereby ensuring the structural strength of the head structure and ensuring the interference fit between the piston 2 and the opening 11, so that the displacement of the piston 2 has a good limiting effect.

[0070] In some embodiments of the present application, as shown in FIGS. 1-3, the detonation device 3 includes a base 31, a powder cartridge 32 and a fuse 33. The base 31 is located in the shell 1 and connected to the shell 1, and the base 31 has a detonation cavity 311 with an exhaust port 312 opposite the piston 2. The powder cartridge 32 is located in the detonation cavity 311, and the fuse 33 is connected to the powder cartridge 32 at one end and extends out of the shell 1 through the base 31 at the other end.

[0071] It can be understood that when the detonation actuator 100 needs to cut off the load component, the external control or trigger device acts on the fuse 33 to make the fuse 33 activated and ignite the gunpowder in the gunpowder box 32 to release a large amount of energy, which spreads in the direction of the exhaust port 312 through the detonation cavity 311 on the base 31, and the exhaust port 312 is arranged opposite to the piston 2, so that the piston 2 is quickly moved in the direction of the load component under the action of the shock wave and cuts off the load component, realizing the open circuit effect of the detonation actuator 100.

[0072] At the same time, the gunpowder box 32 and the fuse 33 are fixed by the base 31, which ensures that the gunpowder box 32 and the fuse 33 will not be misfired or failed due to vibration, impact or other external forces during transportation or storage, improving the reliability and safety of the detonation actuator 100.

[0073] In some embodiments of the present application, as shown in FIGS. 1-3, the piston 2 is spaced apart, the exhaust port 312 is one-to-one corresponding to the plurality of pistons 2, the plurality of exhaust ports 312 are respectively arranged opposite to the plurality of pistons 2, and the opening 11 is one-to-one corresponding to the plurality of pistons 2. Thus, after the detonation device 3 is detonated, the shock wave spreads in the direction of the plurality of exhaust ports 312 through the detonation cavity 311 on the base 31, so that the end of the plurality of pistons 2 away from the detonation device 3 extends out of the corresponding opening 11 to cut off the corresponding load component, thereby realizing the multidirectional driving output of the detonation actuator 100.

[0074] At the same time, since each piston 2 has a corresponding exhaust port 312, the plurality of pistons 2 work independently and do not interfere with each other, so that the movement of each piston 2 can be controlled individually as needed, thereby realizing accurate control of different targets or different positions, improving the flexibility and applicability of the detonation actuator 100, and making the detonation actuator 100 adapt to various complex working environments.

[0075] Of course, the detonation actuator 100 of the present application is not limited to this, and the piston 2 can be one, and the exhaust and opening 11 can be one. Thus, after the detonation device 3 is detonated, the shock wave spreads in the direction of the exhaust port 312 through the detonation cavity 311 on the base 31, so that the end of the piston 2 away from the detonation device 3 extends out of the opening 11 to cut off the corresponding load component.

[0076] In some embodiments, as shown in FIGS. 1-3, the two pistons 2 are equidistant from the cartridge 32 along the central axis of the pistons 2, and the cartridge 32 is located between the two pistons 2. The two exhaust ports 312 are respectively arranged opposite to the two pistons 2, and the two openings 11 correspond to the two pistons 2. Thus, after the detonator 3 is detonated, the shock wave spreads from the detonation chamber 311 on the base 31 to the two exhaust ports 312, so that the two ends of the two pistons 2 away from the cartridge 32 extend out of the corresponding openings 11 to cut the corresponding load-carrying components, thereby achieving bidirectional synchronous driving output of the detonation actuator 100. At the same time, the base 31 can ensure that the cartridge 32 is equidistant from the two pistons 2, and the synchronous movement of the two pistons 2 is ensured, thereby further improving the reliability.

[0077] In some embodiments, the three pistons 2 are equidistant from the cartridge 32 along the central axis of the pistons 2, and the cartridge 32 is located between the two pistons 2. The two exhaust ports 312 are respectively arranged opposite to the three pistons 2, and the two openings 11 correspond to the three pistons 2. Thus, after the detonator 3 is detonated, the shock wave spreads from the detonation chamber 311 on the base 31 to the three exhaust ports 312, so that the three ends of the three pistons 2 away from the cartridge 32 extend out of the corresponding openings 11 to cut the corresponding load-carrying components, thereby achieving three-way synchronous driving output of the detonation actuator 100.

[0078] In some embodiments of the present application, as shown in FIGS. 1-3, the detonation actuator 100 further comprises a fixed component 5. The fixed component 5 covers the outer wall of the shell 1 covering the detonator 3. Thus, the shell 1 is protected by the fixed component 5 from displacement, deformation, or cracking under the action of the shock wave of the detonator 3, thereby preventing the piston 2 from cutting the load-carrying component due to the displacement of the shell 1. At the same time, the fixed component 5 is arranged to minimize the radial deformation of the shell 1 in the direction away from the central axis of the piston 2, so as to ensure that the piston 2 deforms radially in the direction away from the central axis of the piston 2 and is connected with the shell 1 in interference, thereby improving the reliability.

[0079] According to the motor controller Z of the embodiments of the present application, as shown in FIGS. 1-4, the motor controller Z comprises at least three-phase conductive sheet rows and a detonation actuator 100, and the detonation actuator 100 is used to cut at least two-phase conductive sheet rows in the at least three-phase conductive sheet rows.

[0080] It can be understood that at least three phase conductive piece rows of the motor controller Z are connected with the motor, and the motor controller Z is also connected with the battery. When the detonating device 3 is not detonated, the three phase conductive piece rows can be normally powered, ensuring the circuit communication between the battery, the motor controller Z and the motor, so that the motor works normally.

[0081] When the current is abnormal and the detonating device 3 is detonated, the piston 2 moves rapidly towards the direction of the three phase conductive piece rows under the action of the shock wave, so that part of the piston 2 extends out of the shell 1 from the opening 11 and cuts off at least two of the three phase conductive piece rows, thereby cutting off the connection between the motor and the motor controller Z, achieving the disconnection of the alternating current between the motor controller Z and the motor, and further achieving the open circuit effect of the motor controller Z. Thus, the risk of combustion and fire caused by the motor dragging large current after short circuit is avoided, the motor is effectively protected, and the use safety is improved.

[0082] At the same time, through the interference fit between the part of the piston 2 and the opening 11, it is effectively avoided that the piston 2 moves towards the direction away from the load carrying component and retracts due to the decrease of air pressure after the explosion and combustion of the detonating device 3 or the reverse force generated when the piston 2 impacts the load carrying component to be cut off. Thus, it is further ensured that the piston 2 cuts off the load carrying component and remains in the position between the two sections of the cut-off load carrying component, further ensuring the open circuit effect of the detonating actuator 100 and improving the reliability of the detonating actuator. At the same time, through the interference fit between the part of the piston 2 and the opening 11, it is avoided that the residue generated after the detonation of the detonating device 3 leaks from the gap between the piston 2 and the opening 11, and it is avoided that the combustible substances in the residue that have not been burned out in the detonating device 3 burn or explode again outside the shell 1, thereby improving the safety and avoiding the reduction of the subsequent cleaning step of the residue, reducing the downtime, maintenance and cleaning time caused by the leakage of the residue, and helping to reduce the production cost and improve the overall operating efficiency.

[0083] According to the motor controller Z of the embodiment of the present application, at least three phase conductive piece rows are used to connect the motor, and the detonating actuator 100 is used to cut off at least two of the three phase conductive piece rows, thereby cutting off the connection between the motor and the motor controller Z, and further achieving the open circuit effect of the motor controller Z. At the same time, through the part of the piston 2 extending out of the shell 1 from the opening 11 after the detonation of the detonating device 3 and the interference fit between the part of the piston 2 and the opening 11, it is effectively avoided that the piston 2 moves towards the direction away from the load carrying component and retracts, thereby ensuring that the piston 2 cuts off the load carrying component and ensuring the open circuit effect of the detonating actuator 100. In addition, it is avoided that the residue generated after the detonation of the detonating device 3 leaks from the gap between the piston 2 and the opening 11, the subsequent cleaning step of the residue is avoided, and the safety and reliability of the motor controller Z are improved.

[0084] The powertrain Y of the embodiment of the present application is described below.

[0085] According to the power assembly Y of the embodiment of the application, the motor controller Z is arranged, and the detonating actuator 100 is used to cut off at least two of the at least three rows of conductive sheets, so that the connection between the motor and the motor controller Z can be cut off, and the open circuit effect of the motor controller Z is realized. Meanwhile, after the detonating device 3 is detonated, the part of the piston 2 that is capable of driving the piston 2 to extend out of the shell 1 from the opening 11 and is in interference fit with the opening 11, so that the piston 2 is effectively prevented from retracting when moving in the direction away from the load-carrying component, and the open circuit effect of the detonating actuator 100 is ensured, and the residue generated after the detonating device 3 is detonated is prevented from leaking from the gap between the piston 2 and the opening 11, so that the subsequent cleaning step of the residue is reduced, and the safety and reliability of the power assembly Y are improved.

[0086] According to the power assembly Y of the embodiment of the application, the motor controller Z is arranged, and the detonating actuator 100 is used to cut off at least two of the at least three rows of conductive sheets, so that the connection between the motor and the motor controller Z can be cut off, and the open circuit effect of the motor controller Z is realized. Meanwhile, after the detonating device 3 is detonated, the part of the piston 2 that is capable of driving the piston 2 to extend out of the shell 1 from the opening 11 and is in interference fit with the opening 11, so that the piston 2 is effectively prevented from retracting when moving in the direction away from the load-carrying component, and the open circuit effect of the detonating actuator 100 is ensured, and the residue generated after the detonating device 3 is detonated is prevented from leaking from the gap between the piston 2 and the opening 11, so that the subsequent cleaning step of the residue is reduced, and the safety and reliability of the power assembly Y are improved.

[0087] The vehicle W of the embodiment of the application is described below.

[0088] According to the vehicle W of the embodiment of the application, the power assembly Y is arranged, and the detonating actuator 100 is used to cut off at least two of the at least three rows of conductive sheets, so that the connection between the motor and the motor controller Z can be cut off, and the open circuit effect of the motor controller Z is realized. Meanwhile, after the detonating device 3 is detonated, the part of the piston 2 that is capable of driving the piston 2 to extend out of the shell 1 from the opening 11 and is in interference fit with the opening 11, so that the piston 2 is effectively prevented from retracting when moving in the direction away from the load-carrying component, and the open circuit effect of the detonating actuator 100 is ensured, and the residue generated after the detonating device 3 is detonated is prevented from leaking from the gap between the piston 2 and the opening 11, so that the subsequent cleaning step of the residue is reduced, and the safety and reliability of the vehicle W are improved.

[0089] The vehicle W of the embodiment of the application is described below.

[0090] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0091] While the embodiments of the application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A squib actuator, wherein, The application relates to an explosive actuator. The explosive actuator comprises: a shell (1) having an opening (11); an explosive device (3) arranged in the shell (1); 2. The detonation actuator of claim 1, wherein, a piston (2) movably arranged in the shell (1), and after the explosive device (3) is exploded, a part of the piston (2) is driven to extend out of the shell (1) from the opening (11) and the piston (2) is in interference fit with the opening (11). The piston (2) comprises: a first section (21) having a radial dimension greater than the aperture of the opening (11) along the radial direction of the piston (2); a second section (22) arranged on the side of the first section (21) away from the explosive device (3) and having a radial dimension less than the aperture of the opening (11) along the radial direction of the piston (2); 3. The detonation actuator of claim 2, wherein, a connecting section (23) arranged between the first section (21) and the second section (22) and gradually decreasing in size along the radial direction of the piston (2) in the direction from the first section (21) to the second section (22), and after the explosive device (3) is exploded, the connecting section (23) is in interference fit with the opening (11).

4. The detonation actuator of claim 2, wherein, In the cross section of the center axis of the piston (2), the connecting section (23) has an arc-shaped profile line concave towards the center axis of the piston (2). The first section (21) has a sealing groove (213) extending along the circumferential direction of the piston (2) on the peripheral wall of the first section (21), and the explosive actuator further comprises:

5. The detonating actuator of any one of claims 1-4, wherein, a sealing ring (4) arranged in the sealing groove (213) and in sealing connection with the shell (1).

6. The detonation actuator of claim 5, wherein, After the explosive device (3) is exploded, the end of the piston (2) close to the explosive device (3) is deformed radially towards the direction away from the center axis of the piston (2) and is in interference connection with the shell (1).

7. The detonating actuator of any one of claims 1-6, wherein, The piston (2) is provided with a recess (211) on the end face towards the explosive device (3), and the open mouth (2111) of the recess (211) faces the explosive device (3).

8. The detonating actuator of any one of claims 1-7, wherein, After the explosive device (3) is exploded, the shell (1) forming the opening (11) is deformed in the direction of movement of the piston (2). The explosive device (3) comprises: a base (31) arranged in the shell (1) and connected with the shell (1), the base (31) having an explosion cavity (311) with an exhaust port (312) arranged opposite to the piston (2); a powder box (32) arranged in the explosion cavity (311); a fuse (33) connected with the powder box (32) at one end and extending out of the shell (1) through the base (31) at the other end.

9. The detonation actuator of claim 8, wherein, The pistons (2) are spaced apart, the exhaust ports (312) are one-to-one corresponding to the plurality of pistons (2), and the plurality of exhaust ports (312) are respectively arranged opposite to the plurality of pistons (2), and the openings (11) are one-to-one corresponding to the plurality of pistons (2).

10. The detonating actuator of any one of claims 1-9, wherein, The pistons (2) are non-conductive members. And / or, the shell (1) is a metal member.

11. An electric machine controller wherein, Comprise: At least three phase conductive sheet rows for connecting the motor; The detonation actuator (100) according to any one of claims 1-10 is used to cut off at least two phase conductive sheet rows in the at least three phase conductive sheet rows.

12. A powertrain, wherein, Comprise the motor controller (Z) according to claim 11.

13. A vehicle, wherein, Comprise the power assembly (Y) according to claim 12.

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