Explosive actuator, motor controller, powertrain and vehicle

Abstract

The present invention discloses an explosive actuator, a motor controller, a power assembly and a vehicle, wherein the explosive actuator comprises: a housing having an opening; an explosive device disposed in the housing; and a piston movably disposed in the housing, wherein the portion of the piston that can be driven to extend out of the housing from the opening after the explosive device is detonated and the portion of the piston is interference fit with the opening. According to the explosive actuator of the present invention, the housing has an opening, the explosive device is disposed in the housing, and the piston is movably disposed in the housing, wherein the portion of the piston that can be driven to extend out of the housing from the opening after the explosive device is detonated and the portion of the piston is interference fit with the opening, thereby effectively preventing the piston from moving in a direction away from the load-bearing component and retracting, thereby ensuring that the piston cuts off the load-bearing component and ensuring the circuit-breaking effect of the explosive actuator.

Description

Technical Field

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

[0002] The detonation actuator is a product used to protect the circuit when the circuit is overcurrent. It pushes the piston to cut off the load-bearing components through the shock wave generated after detonation, thereby disconnecting the circuit. However, the detonation actuator is installed on the motor controller to cut off the connection between the motor and the motor controller when the three-phase bridge arm is short-circuited. However, the existing detonation actuator cannot cut off the load-bearing components after detonation. 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 explosive actuator, which effectively prevents the piston from moving in a direction away from the load-bearing component and retracting, thereby ensuring that the piston cuts off the load-bearing component and the circuit-breaking effect of the explosive actuator is ensured.

[0004] The present invention also provides a motor controller, wherein the vehicle includes the above-mentioned explosive actuator.

[0005] The present invention also provides a powertrain, wherein the vehicle comprises the motor controller mentioned above.

[0006] The present invention also provides a vehicle, comprising the above-mentioned power assembly.

[0007] According to an embodiment of the present invention, the detonation actuator includes: a shell having an opening; a detonation device disposed in the shell; and a piston movably disposed in the shell. After the detonation, the detonation device can drive part of the piston to extend out of the shell from the opening and the part of the piston is interference fit with the opening.

[0008] According to the detonation type actuator of the embodiment of the present invention, 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 that can drive the piston to extend out of the shell from the opening and the part of the piston is interference fit with the opening, which effectively prevents the piston from moving in the direction away from the load-bearing component and retracting, thereby ensuring that the piston cuts off the load-bearing component, ensuring the circuit disconnection effect of the detonation type actuator, and preventing the residue generated after the detonation device is detonated from leaking from the gap between the piston and the opening, avoiding reducing the subsequent cleaning steps of the residue, and improving safety.

[0009] In some embodiments of the present invention, the piston includes: a first section, wherein along the radial direction of the piston, the radial dimension of the first section is larger than the aperture of the opening; a second section, wherein the second section is located on the side of the first section away from the detonating device, wherein along the radial direction of the piston, the radial dimension of the second section is smaller than the aperture of the opening; and a connecting section, wherein the connecting section is located between the first section and the second section, wherein in the direction from the first section to the second section, the dimension of the connecting section along the radial direction of the piston gradually decreases, and after the detonating device is detonated, the connecting section is interference fit with the opening.

[0010] In some embodiments of the present invention, in a cross section passing through the central axis of the piston, a contour line of the connecting section is an arc shape that is concave toward the central axis of the piston.

[0011] In some embodiments of the present invention, a sealing groove extending along the circumferential direction of the piston is provided on the peripheral wall of the first section, and the detonation actuator further comprises: a sealing ring located in the sealing groove and sealedly connected to the housing.

[0012] In some embodiments of the present invention, after the detonation device is detonated, one end of the piston close to the detonation device undergoes radial deformation in a direction away from the central axis of the piston and is interference-connected with the housing.

[0013] In some embodiments of the present invention, a recess is provided on an end surface of the piston facing the detonating device, and an opening of the recess faces the detonating device.

[0014] In some embodiments of the present invention, after the detonation device is detonated, the shell forming the opening is deformed toward the moving direction of the piston.

[0015] In some embodiments of the present invention, the detonation device includes: a base, the base is located in the shell and connected to the shell, the base has a detonation chamber, the detonation chamber has an exhaust port, and the exhaust port is arranged opposite to the piston; a powder box, the powder box is located in the detonation chamber; a fuse, one end of the fuse is connected to the powder box, and the other end passes through the base and extends out of the shell.

[0016] In some embodiments of the present invention, the pistons are multiple and spaced apart, the exhaust ports are multiple and correspond one-to-one with the multiple pistons, the multiple exhaust ports are respectively arranged opposite to the multiple pistons, and the openings are multiple and correspond one-to-one with the multiple pistons.

[0017] In some embodiments of the present invention, the piston is a non-conductive part; and / or the housing is a metal part.

[0018] The motor controller according to the embodiment of the present invention comprises: at least three-phase conductive sheet rows for connecting the motor; and the above-mentioned detonation actuator, wherein the detonation actuator is used to cut off at least two-phase conductive sheet rows of the at least three-phase conductive sheet rows.

[0019] According to the motor controller of the embodiment of the present invention, the detonation actuator is used to cut off at least two of the at least three-phase conductive sheet rows, so as to cut off the connection between the motor and the motor controller, thereby achieving the circuit disconnection effect of the motor controller. At the same time, after the detonation of the detonation device, the part of the piston that can be driven to extend out of the shell from the opening and the part of the piston that is in interference fit with the opening can effectively prevent the piston from moving in a direction away from the load-bearing component and retracting, thereby ensuring that the piston cuts off the load-bearing component, ensuring the circuit disconnection effect of the detonation actuator, and preventing the residue generated after the detonation of the detonation device from leaking from the gap between the piston and the opening, avoiding reducing the subsequent steps of cleaning the residue, and improving the safety and reliability of the motor controller.

[0020] A powertrain according to an embodiment of the present invention includes the above-mentioned motor controller.

[0021] According to the power assembly of the embodiment of the present invention, a motor controller is provided, and the detonation actuator is used to cut off at least two-phase conductive sheet rows in at least three-phase conductive sheet rows, so as to cut off the connection between the motor and the motor controller, thereby achieving the circuit disconnection effect of the motor controller. At the same time, after the detonation of the detonation device, the part of the piston that can be driven to extend out of the housing from the opening and the part of the piston that is in interference fit with the opening can effectively prevent the piston from moving in a direction away from the load-bearing component and retracting, thereby ensuring that the piston cuts off the load-bearing component, ensuring the circuit disconnection effect of the detonation actuator, and preventing the residue generated after the detonation of the detonation device from leaking from the gap between the piston and the opening, avoiding reducing the subsequent steps of cleaning the residue, and improving the safety and reliability of the power assembly.

[0022] A vehicle according to an embodiment of the present invention includes the above-mentioned powertrain.

[0023] According to the vehicle of the embodiment of the present invention, a power assembly is provided, and the detonation actuator is used to disconnect the three-phase AC between the motor controller and the motor, so as to cut off the connection between the motor and the motor controller, thereby achieving the circuit disconnection effect of the motor controller. At the same time, after the detonation of the detonation device, the part of the piston that can be driven to extend out of the housing from the opening and the part of the piston that is in interference fit with the opening can effectively prevent the piston from moving in a direction away from the load-bearing component and retracting, thereby ensuring that the piston cuts off the load-bearing component, ensuring the circuit disconnection effect of the detonation actuator, and preventing the residue generated after the detonation of the detonation device from leaking from the gap between the piston and the opening, avoiding reducing the subsequent steps of cleaning the residue, and improving the safety and reliability of the vehicle.

[0024] 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

[0025] 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:

[0026] Figure 1 is a schematic structural diagram of an explosive actuator according to an embodiment of the present invention, wherein the explosive device is not detonated;

[0027] Figure 2 is a schematic structural diagram of an explosive actuator according to an embodiment of the present invention, wherein the explosive device is detonated and is in an intermediate state;

[0028] Figure 3 is a schematic structural diagram of an explosive actuator according to an embodiment of the present invention, wherein the explosive device is detonated and is in a final state.

[0029] Reference numerals:

[0030] 100. Explosive actuator;

[0031] 1. Shell; 11. Opening;

[0032] 2. Piston; 21. First section; 211. Concave portion; 2111. Open opening; 213. Sealing groove; 22. Second section; 23. Connecting section;

[0033] 3. Detonation device; 31. Base; 311. Detonation chamber; 312. Exhaust port; 32. Gunpowder box; 33. Fuze;

[0034] 4. Sealing ring;

[0035] 5. Fix the parts. DETAILED DESCRIPTION

[0036] 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.

[0037] 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 accompanying 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, 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.

[0038] 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.

[0039] The following describes an explosive actuator 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0040] like Figure 1-Figure 3 As shown, the detonation actuator 100 according to an embodiment of the present invention comprises a housing 1, a detonating device 3 and a piston 2. The housing 1 has an opening 11, the detonating device 3 is arranged in the housing 1, the piston 2 is movably arranged in the housing 1, and the detonating device 3 can drive the piston 2 to extend out of the housing 1 from the opening 11 after detonation, and the piston 2 is partially in interference fit with the opening 11.

[0041] It can be understood that when the detonating device 3 is detonated, the explosive material inside it will quickly burn or explode, releasing huge energy, which will quickly diffuse in the shell 1 in the form of shock waves. Under the action of the shock wave, the piston 2 will move rapidly toward the direction of the load-bearing component, so that part of the piston 2 will extend out of the shell 1 from the opening 11 and cut off the load-bearing component, thereby disconnecting the power supply end connected to the load end, thereby achieving the circuit disconnection effect of the detonating actuator 100.

[0042] After the detonation device 3 is detonated, the interference fit between the part of the piston 2 and the opening 11 effectively prevents the pressure drop after the detonation device 3 explodes and burns, or the reverse force generated by the piston 2 when it impacts the load-bearing component to be cut off, causing the piston 2 to move in the direction away from the load-bearing component (i.e., toward the detonation device 3) and retract, thereby ensuring that the piston 2 cuts off the load-bearing component and remains in the position between the two sections of the cut load-bearing component, further ensuring the circuit disconnection effect of the detonation actuator 100, and improving the reliability of the detonation brake. At the same time, the interference fit between the part of the piston 2 and the opening 11 prevents the residue generated after the detonation device 3 is detonated from leaking from the gap between the piston 2 and the opening 11, and prevents the combustible material in the detonation device 3 that is not completely burned in the residue from burning or exploding again outside the housing 1, thereby improving safety, avoiding reducing the subsequent steps of cleaning the residue, reducing the downtime, maintenance and cleaning time caused by the leakage of the residue, and helping to reduce production costs and improve overall operating efficiency.

[0043] In addition, the setting of the opening 11 ensures that part of the piston 2 can extend out of the shell 1 from the opening 11, ensuring that the piston 2 cuts off the loaded parts, and after the detonation device 3 is detonated, the part of the piston 2 and the opening 11 are interfered with to prevent the piston 2 from rebounding. Therefore, the detonation actuator 100 of the present application has a simple overall structure while ensuring the circuit disconnection effect, and is easy to process and install, thereby effectively reducing costs.

[0044] Compared with the prior art in which the actuator and the belt-carrying component are integrated, the detonating actuator 100 of the present application is a separate and independent mechanism from the belt-carrying component, which facilitates the layout of the detonating actuator 100, improves the space utilization of the equipment using the detonating actuator 100, and thus reduces the volume.

[0045] Furthermore, the piston 2 is an elastically deformable member, so that after the detonation device 3 is detonated, the piston 2 can be deformed by being an elastically deformable member, thereby ensuring the reliability of the interference fit between the piston 2 and the opening 11. Optionally, the piston 2 is a plastic member such as a rubber member or a PC (Polycarbonate) member.

[0046] In some embodiments, the load-bearing component is used to connect the motor and the motor controller. When the detonating device 3 is not detonated, the conductive sheet is not disconnected, so that the load-bearing component is normally energized, ensuring that the circuit between the motor controller and the motor is connected, so that the motor can work normally. When the current is abnormal and the detonating device 3 is detonated, the load-bearing component will be hit by the piston 2 and disconnected, causing the load-bearing component to be short-circuited, thereby cutting off the circuit between the motor and the motor controller, thereby preventing the motor and the motor controller from being damaged by abnormal current, and improving overall safety.

[0047] According to the detonating actuator 100 of the embodiment of the present invention, the shell 1 has an opening 11, the detonating device 3 is arranged in the shell 1, and the piston 2 is movably arranged in the shell 1. After being detonated by the detonating device 3, the part of the piston 2 can be driven to extend out of the shell 1 from the opening 11, and the part of the piston 2 is interference fit with the opening 11, which effectively prevents the piston 2 from moving in a direction away from the load-bearing component and retracting, thereby ensuring that the piston 2 cuts off the load-bearing component, ensuring the circuit disconnection effect of the detonating actuator 100, and preventing the residue generated after the detonating device 3 is detonated from leaking from the gap between the piston 2 and the opening 11, avoiding reducing the subsequent cleaning steps of the residue, and improving safety.

[0048] In some embodiments of the present invention, Figure 1-Figure 3 As shown, 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 larger than the aperture of the opening 11, the second section 22 is located on the side of the first section 21 away from the detonating device 3, and in the radial direction of the piston 2, the radial dimension of the second section 22 is smaller than the aperture of the opening 11, the connecting section 23 is located between the first section 21 and the second section 22, and 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, and after the detonating device 3 is detonated, the connecting section 23 is interference fit with the opening 11.

[0049] Therefore, after the detonation device 3 is detonated, the second section 22 is extended from the opening 11 outside the housing 1 and cuts off the load-bearing components through such an arrangement, thereby ensuring the circuit-breaking effect of the detonation-type actuator 100. At the same time, along the radial direction of the piston 2, the radial dimension of the first section 21 is larger than the aperture of the opening 11, so that after the detonation device 3 is detonated, part of the piston 2 is ensured to be located in the housing 1, and the piston 2 is prevented from being completely rushed out, thereby ensuring that the piston 2 cuts off the load-bearing components, thereby improving the overall reliability.

[0050] In addition, when the detonating device 3 drives the piston 2 to move in a direction away from the detonating device 3 after detonation, the connecting section 23 contacts the opening 11 and deforms. In the direction from the first section 21 to the second section 22, the size of the connecting section 23 along the radial direction of the piston 2 is gradually reduced, thereby ensuring an interference fit between the connecting section 23 and the opening 11, thereby preventing the piston 2 from moving in a direction away from the load-bearing component and causing it to retract, thereby improving the reliability of the detonating actuator 100. In addition, during the movement of the piston 2, the stress is effectively dispersed, the occurrence of stress concentration is reduced, and the stability and reliability of the overall structure of the piston 2 are improved.

[0051] It should be noted that the shape of the shell 1 of the present application can be a cylinder, a cubic column, a polygonal column or other structures, and the shape of the second section 22 is the same as that of the shell 1.

[0052] In some embodiments of the present invention, Figure 1-Figure 3As shown, in the cross section passing through the central axis of the piston 2 , the contour line of the connecting section 23 is an arc shape that is concave toward the central axis of the piston 2 .

[0053] It can be understood that when the detonating device 3 drives the piston 2 to move in a direction away from the detonating device 3 after detonation, the connecting section 23 contacts the opening 11 and deforms. Such a setting further ensures that the connecting section 23 deforms, thereby ensuring an interference fit between the connecting section 23 and the opening 11, and ensuring that the deformation of the connecting section 23 is greater than the deformation of the shell 1, thereby avoiding large deformation or rupture of the shell 1 where the opening 11 is formed while avoiding the rebound of the piston 2, thereby improving the overall reliability.

[0054] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the peripheral wall of the first section 21 is provided with a sealing groove 213 extending along the circumferential direction of the piston 2, and the detonating actuator 100 further includes a sealing ring 4, which is located in the sealing groove 213 and is sealed and connected to the housing 1. The sealing ring 4 is located in the sealing groove 213 and is sealed and connected to the housing 1. Therefore, after the detonating device 3 is detonated, the sealing effect of the sealing ring 4 effectively prevents the shock wave generated by the detonating device 3 from leaking from the gap between the first section 21 and the housing 1, ensuring that the piston 2 cuts off the load-bearing components under the action of the shock wave, and ensuring the power-off effect of the detonating actuator 100. Optionally, the material of the sealing ring 4 is a material composed of rubber and synthetic resin.

[0055] In some embodiments of the present invention, Figure 1-Figure 3 As shown, after the detonating device 3 is detonated, the end of the piston 2 close to the detonating device 3 is radially deformed in a direction away from the central axis of the piston 2 and is interference-connected with the housing 1 .

[0056] Therefore, after the detonator 3 is detonated, the end of the piston 2 close to the detonator 3 is radially deformed in the direction away from the central axis of the piston 2 and is interference-connected with the shell 1, thereby increasing the contact friction between the piston 2 and the shell 1, and further avoiding the pressure drop after the explosion and combustion of the detonator 3, which causes the piston 2 to move in the direction away from the load-bearing component and retract, thereby ensuring that the piston 2 cuts off the load-bearing component and ensures the circuit-breaking effect of the detonation actuator 100.

[0057] Furthermore, after the detonation device 3 is detonated, the first section 21 is radially deformed in a direction away from the central axis of the piston 2 and is interference-connected with the housing 1 .

[0058] It should be noted that “the direction of the piston 2 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 prism or a polygonal prism, the radial direction of the piston 2 refers to the radial direction of a circle with the center of the cross section perpendicular to the central axis of the piston 2 as the center.

[0059] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the end surface of the piston 2 facing the detonating device 3 is provided with a recess 211, and the open mouth 2111 of the recess 211 faces the detonating device 3. It can be understood that when the detonating device 3 is detonated, huge energy is released and rapidly diffuses in the shell 1 in the form of a shock wave, and the end surface of the piston 2 facing the detonating device 3 is provided with a recess 211, and the open mouth 2111 of the recess 211 faces the detonating device 3, so that the shock wave enters the recess 211 and directly acts on the inner surface of the recess 211, thereby achieving radial deformation of the end of the piston 2 close to the detonating device 3 in the direction away from the central axis of the piston 2 and interference connection with the shell 1.

[0060] Furthermore, a recess 211 is provided on the end surface of the first section 21 facing the detonating device 3 , and an opening 2111 of the recess 211 faces the detonating device 3 .

[0061] In some embodiments, Figure 1-Figure 3 As shown, after the detonation device 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 opening 2111 of the recess 211. Therefore, through such an arrangement, the interference between the first section 21 and the housing 1 gradually increases from the bottom wall of the recess 211 to the open opening 2111 of the recess 211, and the interference between the end face of the first section 21 facing the detonation device 3 and the housing 1 is the largest. Through such an arrangement, the residue generated after the detonation device 3 is further prevented from leaking from the gap between the first section 21 and the housing 1, and the downtime, maintenance and cleaning time caused by the residue leakage are further reduced, and the safety of the detonation actuator 100 is improved.

[0062] In some embodiments, Figure 1-Figure 3As shown, the cross-sectional area of ​​the recess 211 gradually increases in the direction from the bottom wall of the recess 211 to the open mouth 2111 of the recess 211. It can be understood that after the detonation device 3 is detonated, the shock wave enters the recess 211 from the open mouth 2111 of the recess 211 and propagates toward the bottom wall of the recess 211. Thus, by gradually increasing the cross-sectional area of ​​the recess 211 in the direction from the bottom wall of the recess 211 to the open mouth 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 radially deformed in the direction away from the central axis of the piston 2 and is interference-connected with the housing 1, thereby improving the reliability of the detonation brake.

[0063] In some embodiments, Figure 1-Figure 3 As shown, a groove is further provided on the bottom wall of the recess 211. Therefore, after the detonation device 3 is detonated, the shock wave enters the recess 211 from the open mouth 2111 of the recess 211 and propagates toward the groove, further guiding and concentrating the energy of the shock wave entering the recess 211 and the groove, further increasing the radial deformation size of the piston 2 along the central axis direction of the piston 2, thereby increasing the interference between the piston 2 and the housing 1, and further improving the reliability of the detonation brake.

[0064] In some embodiments, Figure 1-Figure 3 As shown, before the detonation device 3 is detonated, the cross-sectional area of ​​the groove is unchanged in the direction from the bottom wall of the groove to the bottom wall of the recess 211, and after the detonation device 3 is detonated, the cross-sectional area of ​​the groove gradually increases in the direction from the bottom wall of the groove to the bottom wall of the recess 211. Alternatively, before the detonation device 3 is detonated, the cross-sectional area of ​​the groove gradually increases in the direction from the bottom wall of the groove to the bottom wall of the recess 211, and after the detonation device 3 is detonated, the cross-sectional area of ​​the groove gradually increases in the direction from the bottom wall of the groove to the bottom wall of the recess 211 and is greater than the cross-sectional area of ​​the detonation device 3 before detonation. Thus, various forms of the groove are realized, so that the detonation actuator 100 meets different needs and improves versatility.

[0065] In some embodiments, the outer wall of the first section 21 fits the inner wall of the housing 1. Thus, after the device 3 is detonated, such a configuration further ensures that the first section 21 can be connected with the housing 1 by interference fit after radial deformation in the direction of the central axis, thereby improving reliability.

[0066] In some embodiments of the present invention, Figure 1-Figure 3As shown, after the detonating device 3 is detonated, the housing 1 forming the opening 11 is deformed in the moving direction of the piston 2. It can be understood that, in the process of driving the piston 2 to move in the direction away from the detonating device 3 after the detonating device 3 is detonated, part of the piston 2 extends out of the housing 1 from the opening 11. Since part of the piston 2 is in interference fit with the opening 11, the housing 1 forming the opening 11 is subjected to the sprinting effect of the piston 2, so that the housing 1 forming the opening 11 is deformed in the moving direction of the piston 2.

[0067] Furthermore, the hardness of the piston 2 is smaller than the hardness of the housing 1. Thus, after the detonation device 3 is detonated, the deformation of the housing 1 forming the opening 11 is smaller than the deformation of the piston 2. This ensures the integrity of the housing 1 while achieving an interference fit between the piston 2 and the opening 11, thereby improving overall reliability.

[0068] In some embodiments of the present invention, the piston 2 is a non-conductor. Thus, by such an arrangement, the piston 2 will not be electrically connected to the load-bearing component, thereby avoiding possible short circuit or current leakage problems, and the piston 2 will not be affected by current corrosion or electrothermal aging, thereby increasing the service life.

[0069] In some embodiments of the present invention, the housing 1 is a metal part. Thus, the structural strength of the housing 1 is improved through such a configuration, and the housing 1 is protected from displacement, deformation or cracking under the shock wave of the detonating device 3, thereby improving the reliability of the detonating actuator 100.

[0070] Furthermore, the shell 1 is closed by a hot pressing process to form a head structure, and an opening 11 is formed in the center of the head structure, thereby ensuring the structural strength of the head structure and ensuring an interference fit between the piston 2 and the opening 11, thereby achieving a good limiting effect on the displacement of the piston 2.

[0071] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the detonating device 3 includes a base 31, a powder box 32 and a fuse 33. The base 31 is located in the housing 1 and connected to the housing 1, the base 31 has a detonating chamber 311, the detonating chamber 311 has an exhaust port 312, the exhaust port 312 is arranged opposite to the piston 2, the powder box 32 is located in the detonating chamber 311, one end of the fuse 33 is connected to the powder box 32, and the other end passes through the base 31 and extends out of the housing 1.

[0072] It can be understood that when the explosive actuator 100 is required to cut off the load-bearing component, the external control or trigger device acts on the fuse 33 to activate the fuse 33 and ignite the gunpowder in the gunpowder box 32 to release huge energy. This energy is diffused toward the exhaust port 312 through the detonation chamber 311 on the base 31 in the form of a shock wave. The exhaust port 312 is arranged relative to the piston 2 so that the piston 2 moves rapidly toward the direction of the load-bearing component under the action of the shock wave and cuts off the load-bearing component, thereby achieving the circuit disconnecting effect of the explosive actuator 100.

[0073] At the same time, the base 31 is used to fix the powder box 32 and the fuse 33, ensuring that the powder box 32 and the fuse 33 will not cause accidental explosion or failure of the detonation device 3 due to vibration, impact or other external forces during transportation or storage, thereby improving the reliability and safety of the detonation actuator 100.

[0074] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the pistons 2 are multiple and spaced apart, the exhaust ports 312 are multiple and correspond to the multiple pistons 2 one by one, the multiple exhaust ports 312 are respectively arranged opposite to the multiple pistons 2, and the openings 11 are multiple and correspond to the multiple pistons 2 one by one. Therefore, after the detonation device 3 is detonated, the shock wave spreads toward the direction of the multiple exhaust ports 312 through the detonation cavity 311 on the base 31, so that the ends of the multiple pistons 2 away from the detonation device 3 extend from the corresponding openings 11 to cut off the corresponding carrier components, thereby realizing the multi-directional drive output of the detonation actuator 100.

[0075] At the same time, since each piston 2 has an exhaust port 312 corresponding to it, the multiple pistons 2 can work independently without interfering with each other, so that the movement of each piston 2 can be controlled individually as needed, thereby achieving precise control of different targets or different positions, improving the flexibility and applicability of the detonating actuator 100, and enabling the detonating actuator 100 to adapt to a variety of complex working environments.

[0076] Of course, the detonation actuator 100 of the present application is not limited thereto, and the piston 2 may be one, and the exhaust and opening 11 may be one. Thus, after the detonation device 3 is detonated, the shock wave diffuses toward the exhaust port 312 through the detonation chamber 311 on the base 31, so that the end of the piston 2 away from the detonation device 3 extends out from the opening 11 to cut off the corresponding belt-carrying portion.

[0077] In some embodiments, Figure 1-Figure 3As shown, there are two pistons 2, the distance between the powder box 32 and the two pistons 2 is the same, along the central axis direction of the piston 2, the powder box 32 is located between the two pistons 2, there are two exhaust ports 312 corresponding to the two pistons 2, the two exhaust ports 312 are respectively arranged opposite to the two pistons 2, and there are two openings 11 corresponding to the two pistons 2. Therefore, after the detonation device 3 is detonated, the shock wave spreads toward the direction of the two exhaust ports 312 through the detonation chamber 311 on the base 31, so that the ends of the two pistons 2 away from the powder box 32 extend from the corresponding opening 11 to cut off the corresponding carrier components, thereby realizing the bidirectional synchronous drive output of the detonation actuator 100. At the same time, the setting of the base 31 can ensure that the distance between the powder box 32 and the two pistons 2 is the same, ensure the synchronous movement of the two pistons 2, and further improve the reliability.

[0078] In some embodiments, there are three pistons 2, and the distance between the powder box 32 and the three pistons 2 is the same. Along the central axis direction of the piston 2, the powder box 32 is located between two pistons 2, and there are two exhaust ports 312 corresponding to the three pistons 2. The two exhaust ports 312 are respectively arranged opposite to the three pistons 2, and there are two openings 11 corresponding to the three pistons 2. Therefore, after the detonation device 3 is detonated, the shock wave spreads toward the direction of the three exhaust ports 312 through the detonation chamber 311 on the base 31, so that the ends of the three pistons 2 away from the powder box 32 extend from the corresponding openings 11 to cut off the corresponding carrier components, thereby realizing the three-way synchronous drive output of the detonation actuator 100.

[0079] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the detonation actuator 100 further includes a fixing component 5. The fixing component 5 covers the outer wall of the shell 1 and the detonating device 3. Thus, the fixing component 5 protects the shell 1 from displacement, deformation or cracking under the shock wave of the detonating device 3, thereby preventing the piston 2 from being unable to cut off the loaded component due to displacement of the shell 1. At the same time, the setting of the fixing component 5 minimizes 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 is radially deformed in the direction away from the central axis of the piston 2 and is interference-connected with the shell 1, thereby improving reliability.

[0080] The motor controller according to the embodiment of the present invention comprises at least three-phase conductive sheet rows and an explosive actuator 100, wherein the explosive actuator 100 is used to cut off at least two-phase conductive sheet rows of the at least three-phase conductive sheet rows.

[0081] It can be understood that at least three-phase conductive sheet rows of the motor controller are connected to the motor, and the motor controller is also connected to the battery. When the detonator 3 is not detonated, the three-phase conductive sheet rows can be energized normally to ensure that the circuits between the battery, the motor controller and the motor are connected, so that the motor can work normally.

[0082] When the current is abnormal and the detonator 3 is detonated, the piston 2 moves rapidly toward the three-phase conductive sheet row 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 sheet rows, thereby cutting off the connection between the motor and the motor controller, disconnecting the alternating current between the motor controller and the motor, and further achieving the circuit disconnection effect of the motor controller, avoiding the risk of combustion and fire caused by the motor dragging a large current after a short circuit, effectively protecting the motor, thereby preventing serious battery accidents, and effectively improving the safety of use.

[0083] At the same time, through the interference fit between the part of the piston 2 and the opening 11, it is effectively prevented that the pressure drops after the explosion and combustion of the detonating device 3 or the reverse force generated by the piston 2 when it impacts the load-bearing component to be cut off causes the piston 2 to move in the direction away from the load-bearing component and retract, thereby ensuring that the piston 2 cuts off the load-bearing component and maintains the position between the two sections of the cut load-bearing component, further ensuring the circuit disconnection effect of the detonating actuator 100, and improving the reliability of the detonating brake. At the same time, through the interference fit between the part of the piston 2 and the opening 11, it is prevented that the residue generated after the detonating device 3 is detonated leaks from the gap between the piston 2 and the opening 11, and it is prevented that the combustible material in the detonating device 3 that is not completely burned in the residue is burned or exploded again outside the shell 1, thereby improving safety, avoiding reducing the subsequent cleaning steps for the residue, reducing the downtime, maintenance and cleaning time caused by the leakage of the residue, and helping to reduce production costs and improve overall operational efficiency.

[0084] According to the motor controller of the embodiment of the present invention, at least three-phase conductive sheet rows are used to connect the motor, and the detonation actuator 100 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, thereby achieving the circuit disconnection effect of the motor controller. At the same time, after the detonation of the detonating device 3, part of the piston 2 can be driven 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, which effectively prevents the piston 2 from moving in the direction away from the carrier and retracting, thereby ensuring that the piston 2 cuts off the carrier, ensuring the circuit disconnection effect of the detonation actuator 100, and preventing the residue generated after the detonation of the detonating device 3 from leaking from the gap between the piston 2 and the opening 11, avoiding reducing the subsequent steps of cleaning the residue, and improving the safety and reliability of the motor controller.

[0085] The powertrain according to the embodiment of the present invention is described below.

[0086] A powertrain according to an embodiment of the present invention includes a motor controller.

[0087] According to the powertrain of the embodiment of the present invention, a motor controller is provided, and the detonation actuator 100 is used to cut off at least two-phase conductive sheet rows in at least three-phase conductive sheet rows, so as to cut off the connection between the motor and the motor controller, thereby achieving the circuit disconnection effect of the motor controller. At the same time, after the detonation of the detonation device 3, part of the piston 2 can be driven 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, which effectively prevents the piston 2 from moving in the direction away from the load-bearing component and retracting, thereby ensuring that the piston 2 cuts off the load-bearing component, ensuring the circuit disconnection effect of the detonation actuator 100, and preventing the residue generated after the detonation of the detonation device 3 from leaking from the gap between the piston 2 and the opening 11, avoiding reducing the subsequent steps of cleaning the residue, and improving the safety and reliability of the powertrain.

[0088] Next, a vehicle according to an embodiment of the present invention will be described.

[0089] A vehicle according to an embodiment of the present invention includes a powertrain.

[0090] According to the vehicle of the embodiment of the present invention, a power assembly is provided, and the detonation actuator 100 is used to cut off at least two-phase conductive sheet rows in at least three-phase conductive sheet rows, so as to cut off the connection between the motor and the motor controller, thereby achieving the circuit disconnection effect of the motor controller. At the same time, after the detonation of the detonation device 3, the piston 2 can be driven to extend out of the housing 1 from the opening 11, and the piston 2 is in interference fit with the opening 11, which effectively prevents the piston 2 from moving in the direction away from the load-bearing component and retracting, thereby ensuring that the piston 2 cuts off the load-bearing component, ensuring the circuit disconnection effect of the detonation actuator 100, and preventing the residue generated after the detonation of the detonation device 3 from leaking from the gap between the piston 2 and the opening 11, avoiding reducing the subsequent steps of cleaning the residue, and improving the safety and reliability of the vehicle.

[0091] 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.

[0092] 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 explosive actuator, characterized in that: include: A housing (1), wherein the housing (1) has an opening (11); An explosion device (3), wherein the explosion device (3) is arranged in the housing (1); The piston (2) is movably arranged in the housing (1), and the detonating device (3) comprises: a base (31), the base (31) is located in the housing (1) and connected to the housing (1), the base (31) has a detonating chamber (311), the detonating chamber (311) has an exhaust port (312), and the exhaust port (312) is arranged opposite to the piston (2); a powder box (32), the powder box (32) is located in the detonating chamber (311), and the exhaust port (312) is arranged opposite to the piston (2); A fuze (33) is provided in the explosion chamber (311); one end of the fuze (33) is connected to the powder box (32), and the other end thereof passes through the base (31) and extends out of the housing (1); the pistons (2) are multiple and spaced apart; the exhaust ports (312) are multiple and correspond to the multiple pistons (2); the multiple exhaust ports (312) are respectively arranged opposite to the multiple pistons (2); and the openings (11) are multiple and correspond to the multiple pistons (2); After the detonation of the detonating device (3), the part of the piston (2) can be driven to extend out of the housing (1) from the opening (11), and the part of the piston (2) is interference-fitted with the opening (11); the end surface of the piston (2) facing the detonating device (3) is provided with a recess (211), and the open mouth (2111) of the recess (211) faces the detonating device (3); after the detonation of the detonating device (3), the end of the piston (2) close to the detonating device (3) is radially deformed in a direction away from the central axis of the piston (2) and is interference-connected with the housing (1).

2. The explosive actuator according to claim 1, characterized in that: The piston (2) comprises: A first section (21), along the radial direction of the piston (2), wherein the radial dimension of the first section (21) is greater than the aperture of the opening (11); a second section (22), the second section (22) being located on a side of the first section (21) away from the detonating device (3), and along the radial direction of the piston (2), the radial dimension of the second section (22) being smaller than the aperture of the opening (11); A connecting section (23), the connecting section (23) is located between the first section (21) and the second section (22), and in the direction from the first section (21) to the second section (22), the size of the connecting section (23) along the radial direction of the piston (2) gradually decreases, and after the detonation device (3) is detonated, the connecting section (23) is interference-fitted with the opening (11).

3. The explosive actuator according to claim 2, characterized in that: On a cross section passing through the central axis of the piston (2), the contour line of the connecting section (23) is an arc shape that is concave toward the central axis of the piston (2).

4. The explosive actuator according to claim 2, characterized in that: The peripheral wall of the first section (21) is provided with a sealing groove (213) extending in the circumferential direction of the piston (2), and the detonation actuator further comprises: A sealing ring (4), the sealing ring (4) is located in the sealing groove (213) and is sealedly connected to the housing (1).

5. The explosive actuator according to claim 1, characterized in that: After the detonation device (3) is detonated, the housing (1) forming the opening (11) is deformed in the moving direction of the piston (2).

6. The explosive actuator according to claim 1, characterized in that: The piston (2) is a non-conductive part; And / or, the housing (1) is a metal part.

7. A motor controller, characterized in that: include: At least three-phase conductive strips for connecting the motor; According to the explosive actuator (100) according to any one of claims 1 to 6, the explosive actuator (100) is used to cut off at least two-phase conductive sheet rows among the at least three-phase conductive sheet rows.

8. A powertrain, characterized in that: Comprising a motor controller according to claim 7.

9. A vehicle, characterized in that: Comprising a powertrain according to claim 8.

Images