Detonation type actuator, motor controller, power assembly and vehicle

Abstract

The invention discloses a detonating type actuator, a motor controller, a power assembly and a vehicle, and the detonating type actuator comprises a housing which is provided with an opening; the piston is movably arranged in the shell; the detonating device is arranged in the shell, after detonating, the detonating device can drive part of the piston to stretch out of the shell from the opening, and at least the piston deforms in the radial direction in the direction away from the central axis of the piston and is in interference fit with the shell. According to the detonating type actuator, at least the piston deforms in the radial direction in the direction deviating from the central axis of the piston and is in interference fit with the shell, so that the piston is effectively prevented from moving in the direction deviating from the on-load component due to air pressure reduction after the detonating device explodes and combusts, and it is guaranteed that the on-load component is cut off by the piston; and residues generated after detonating of the detonating device are prevented from leaking from a gap between the piston and the shell, the shutdown time, the maintenance time and the cleaning time caused by residue leakage are shortened, and the safety and reliability of the detonating type actuator are improved.

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 piston of the existing detonation actuator is prone to rebound after firing, resulting in the inability to cut off the load-bearing components. 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 away from the carrier component due to the decrease in gas pressure after the explosion and combustion of the detonator, and the residue from leaking from the gap between the piston and the housing.

[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] The detonation actuator according to an embodiment of the invention comprises: a shell having an opening; a piston movably disposed in the shell; and a detonation device disposed in the shell. After detonation, the detonation device can drive part of the piston to extend out of the shell from the opening, and at least the piston undergoes radial deformation in a direction away from the central axis of the piston and is interference-connected with the shell.

[0008] According to the detonation type actuator of the embodiment of the present invention, the shell has an opening, the piston is movably arranged in the shell, the detonation device is arranged in the shell, and after the detonation device is detonated, the part of the piston can be driven to extend out of the shell from the opening, so that the part of the piston extends out of the shell from the opening and cuts off the load component, thereby disconnecting the power supply end connected to the load component from the load end, and then achieving the circuit disconnection effect of the detonation type actuator. At the same time, by at least the piston being radially deformed in the direction away from the central axis of the piston and being connected with the shell in an interference fit, it is effectively avoided that the piston moves in the direction away from the load component due to the decrease in air pressure after the explosion and combustion of the detonation device, ensuring that the piston cuts off the load component, and avoiding the residue generated after the detonation of the detonation device from leaking from the gap between the piston and the shell, reducing the downtime, maintenance and cleaning time caused by the residue leakage, and improving the safety and reliability of the detonation type actuator.

[0009] In some embodiments of the present invention, after the detonation device is detonated, the 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, and the end of the piston away from the detonation device extends from the opening.

[0010] 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; and a second section, wherein one end of the second section is connected to an end of the first section facing 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 after the detonating device is detonated, at least a portion of the second section can extend out of the shell from the opening.

[0011] In some embodiments of the present invention, a recess is provided on an end surface of the first section facing the detonating device, and an opening of the recess faces the detonating device.

[0012] In some embodiments of the present invention, after the detonation device is detonated, the radial deformation of the piston in a direction away from the central axis of the recess gradually increases in a direction from the bottom wall of the recess to the open mouth of the recess.

[0013] In some embodiments of the present invention, a cross-sectional area of ​​the first section gradually increases in a direction from a bottom wall of the recess to an open mouth of the recess.

[0014] In some embodiments of the present invention, along the moving direction of the piston, the size of the first section is a, and the size of the recess is b, wherein b=a / 10.

[0015] In some embodiments of the present invention, a groove is further provided on the bottom wall of the recess.

[0016] In some embodiments of the present invention, along the moving direction of the piston (2), the size of the first section is a, and the size of the groove is c, wherein c=6a / 10-7a / 10.

[0017] In some embodiments of the present invention, along the radial direction of the first section (21), the size of the first section is d, and the size of the groove is e, wherein e=d / 5-d / 6.

[0018] 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 piston, and the detonation actuator further comprises: a sealing ring located in the sealing groove and sealedly connected to the housing.

[0019] In some embodiments of the present invention, the sealing groove is disposed opposite to at least a portion of the groove.

[0020] In some embodiments of the present invention, the cross-sectional area of ​​the second section remains unchanged along the direction of the central axis of the piston; or, along the direction of the central axis of the piston, the piston comprises a first sub-section and a second sub-section, the first sub-section is located at one end of the second sub-section away from the first section, and in the direction from the detonation device to the first section, the cross-sectional area of ​​the first sub-section along the direction of the central axis of the piston gradually decreases, and the cross-sectional area of ​​the second sub-section along the direction of the central axis of the piston remains unchanged.

[0021] In some embodiments of the present invention, a portion of the outer wall surface of the piston is in contact with the inner wall surface of the housing.

[0022] 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.

[0023] In some embodiments of the present invention, the pistons are multiple and spaced apart and include a first piston and a second piston, the exhaust ports are multiple and include a first exhaust port and a second exhaust port, the first piston is arranged opposite to the first exhaust port, the second piston is arranged opposite to the second exhaust port, and the openings are multiple and correspond one-to-one to the multiple pistons.

[0024] In some embodiments of the present invention, the plurality of pistons further include a third piston, the plurality of exhaust ports further include a third exhaust port, and the third piston is arranged opposite to the third exhaust port.

[0025] In some embodiments of the present invention, the invention further comprises: a fixing component, wherein the fixing component covers the outer wall of the shell covering the detonating device.

[0026] In some embodiments of the present invention, after the detonation device is detonated, the shell that cooperates with the piston undergoes radial deformation in a direction away from the central axis of the piston, and the amount of radial deformation of the shell that cooperates with the piston in a direction away from the central axis of the piston is smaller than the amount of radial deformation of the piston in a direction away from the central axis of the piston.

[0027] In some embodiments of the present invention, the piston is an elastically deformable member.

[0028] The motor controller according to the embodiment of the invention comprises: a three-phase copper busbar; and the above-mentioned detonation actuator, wherein the detonation actuator is used to cut off at least two phases of the three-phase copper busbars.

[0029] According to the motor controller of the embodiment of the invention, an explosive actuator is provided, which is used to cut off at least two of the three-phase copper bars, so as to cut off the circuit between the battery and the motor, realize the disconnection of the three-phase AC between the motor controller and the motor, and then realize the circuit disconnection effect of the motor controller. At the same time, by at least the piston being radially deformed in the direction away from the central axis of the piston and being connected with the shell in an interference fit, it is effectively avoided that the piston moves in the direction away from the three-phase copper bar due to the decrease in air pressure after the explosion and combustion of the detonator, ensuring that the piston cuts off the three-phase copper bar, and avoiding the residue generated after the detonator is detonated from leaking from the gap between the piston and the shell, reducing the downtime, maintenance and cleaning time caused by the residue leakage, and improving the safety and reliability of the motor controller.

[0030] A powertrain according to an embodiment of the invention includes the above-mentioned motor controller.

[0031] According to the powertrain of the embodiment of the present invention, a motor controller is provided, and the detonation actuator is used to cut off at least two of the three-phase copper bars, thereby cutting off the circuit between the battery and the motor, achieving the disconnection of the three-phase alternating current between the motor controller and the motor, and further achieving the circuit disconnection effect of the motor controller, thereby improving the reliability and safety of the powertrain.

[0032] A vehicle according to an embodiment of the invention includes the above-mentioned powertrain.

[0033] According to the vehicle of the embodiment of the present invention, a power assembly is provided, and the detonation actuator is used to cut off at least two of the three-phase copper bars, thereby cutting off the circuit between the battery and the motor, achieving the disconnection of the three-phase alternating current between the motor controller and the motor, and further achieving the circuit disconnection effect of the motor controller, thereby improving the reliability and safety of the vehicle.

[0034] 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

[0035] 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:

[0036] 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;

[0037] Figure 2is a schematic structural diagram of an explosive actuator according to an embodiment of the present invention, wherein an explosive device is detonated;

[0038] Figure 3 is a schematic diagram of the comparative structure of the piston of the detonation type actuator according to an embodiment of the present invention before and after the detonation device is detonated;

[0039] Figure 4 is a schematic structural diagram of an explosive actuator according to another embodiment of the present invention, wherein the explosive device is not detonated;

[0040] Figure 5 is a schematic diagram of the comparative structure of the piston of the detonation type actuator before and after the detonation of the detonation device according to another embodiment of the present invention;

[0041] Figure 6 is a schematic structural diagram of an explosive actuator according to another embodiment of the present invention, wherein the explosive device is not detonated;

[0042] Figure 7 is a front view of a piston according to yet another embodiment of the present invention;

[0043] Figure 8 yes Figure 7 Side view of

[0044] Fig. 9 is a schematic diagram of a piston and a carrier component of an explosive actuator according to an embodiment of the present invention, wherein the carrier component is a schematic cross-sectional diagram along the thickness direction of the carrier component;

[0045] Fig.10 Schematic diagram of a piston and a carrier component of an explosive actuator according to an embodiment of the present invention, wherein the carrier component is a cross-sectional schematic diagram along the length direction of the carrier component.

[0046] Reference numerals:

[0047] 100. Explosive actuator;

[0048] 1. Shell; 11. Opening;

[0049] 2. Piston; 21. First section; 211. Concave portion; 2111. Open mouth; 212. Groove; 213. Sealing groove; 22. Second section; 221. First subsection; 222. Second subsection; 23. First piston; 24. Second piston; 25. Third piston;

[0050] 3. Detonation device; 31. Base; 311. Detonation chamber; 312. Exhaust port; 3121. First exhaust port; 3122. Second exhaust port; 3123. Third exhaust port; 32. Gunpowder box; 33. Fuze;

[0051] 4. Sealing ring;

[0052] 5. Fixing parts;

[0053] 200, carrying parts;

[0054] 6. Weak areas. DETAILED DESCRIPTION

[0055] 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.

[0056] 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.

[0057] 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.

[0058] The following describes an explosive actuator 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0059] like Figure 1-Figure 3 As shown, the detonation actuator 100 according to the embodiment of the present invention includes a housing 1 , a piston 2 and a detonation device 3 .

[0060] The shell 1 has an opening 11, the piston 2 is movably arranged in the shell 1, and the detonating device 3 is arranged in the shell 1. After the detonating device 3 is detonated, it can drive the part of the piston 2 to extend out of the shell 1 from the opening 11, and at least 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.

[0061] 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 carrier 200, so that part of the piston 2 will extend out of the shell 1 from the opening 11 and cut off the carrier 200, thereby disconnecting the power supply end connected to the carrier 200 from the load end, thereby achieving the circuit disconnection effect of the detonating actuator 100.

[0062] At the same time, the opening 11 ensures that part of the piston 2 can extend out of the housing 1 from the opening 11, ensuring that the piston 2 cuts off the belt-carrying component 200. In addition, compared with the prior art in which the actuator and the belt-carrying component are integrated, the detonation actuator 100 of the present application is a separate and independent mechanism from the belt-carrying component 200, 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.

[0063] It should be noted that the piston 2 is a non-conductor. Therefore, by such a configuration, the piston 2 will not be electrically connected to the carrier component 200, 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.

[0064] After the detonation device 3 is detonated, at least the piston 2 is radially deformed in a direction away from the central axis of the piston 2 and is in interference connection with the housing 1, thereby increasing the contact friction between the piston 2 and the housing 1, effectively preventing the piston 2 from moving in a direction away from the carrier 200 and rebounding due to the pressure drop after the explosion and combustion of the detonation device 3, thereby ensuring that the piston 2 cuts off the carrier 200, thereby improving the reliability of the detonation brake. At the same time, since the piston 2 will generate a reverse force when it impacts the carrier 200 to be cut off, at least the piston 2 is radially deformed in a direction away from the central axis of the piston 2 and is in interference connection with the housing 1, further ensuring that the piston 2 cuts off the carrier 200, thereby ensuring the circuit breaking effect of the detonation actuator 100.

[0065] In addition, by radially deforming at least the piston 2 in the direction away from the central axis of the piston 2 and interferingly connecting with the housing 1, the residue generated after the detonation of the detonator 3 is prevented from leaking from the gap between the piston 2 and the housing 1, and the combustible material in the detonator 3 that has not been completely burned in the residue is prevented from burning or exploding again outside the housing 1, thereby improving safety, avoiding reducing the subsequent cleaning steps for the residue, reducing downtime, maintenance and cleaning time caused by residue leakage, and helping to reduce production costs and improve overall operating efficiency. Compared with the prior art that sets components for collecting residues, the detonation actuator 100 of the present application does not need to set other structures or components, has a simple structure, reduces costs, and improves assembly efficiency.

[0066] It should be noted that “the direction of the piston 2 away from the central axis of the piston 2 ” may be understood as a radially outward direction along the central axis of the piston 2 .

[0067] Furthermore, if Fig. 9 and Fig.10 As shown, the end of the piston 2 that is away from the detonating device 3 is opposite to the weak portion 6 of the belt-carrying component 200, and the weak portion 6 is configured to be disconnected when hit. Therefore, after the detonating device 3 is detonated, such a configuration further ensures that the end of the piston 2 that is away from the detonating device 3 cuts off the weak portion 6, thereby ensuring the circuit-breaking effect of the detonating actuator 100. For example, the end of the belt-carrying component 200 that is opposite to the piston 2 that is away from the detonating device 3 is recessed toward the direction of the piston 2 to form the weak portion 6.

[0068] It should be noted that the shape of the housing 1 of the present application can be a structure such as a cylinder, a cubic prism or a polygonal prism, and the shape of the piston 2 is the same as that of the housing 1. 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.

[0069] In some embodiments, the carrier component 200 is used to connect the motor and the motor controller. When the detonator 3 is not detonated, the conductive sheet is not disconnected, so that the carrier component 200 is normally powered on, 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 detonator 3 is detonated, the carrier component 200 will be hit by the piston 2 and disconnected, so that the carrier component 200 is 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.

[0070] According to the detonation type actuator 100 of the embodiment of the present invention, the housing 1 has an opening 11, the piston 2 is movably arranged in the housing 1, the detonation device 3 is arranged in the housing 1, and after the detonation device 3 is detonated, the piston 2 can be driven to extend from the housing 1 through the opening 11, so that the piston 2 extends from the opening 11 through the housing 1 and cuts off the carrier 200, thereby disconnecting the power supply end connected to the carrier 200 from the load end, thereby achieving the circuit disconnection effect of the detonation type actuator 100. At the same time, by at least the piston 2 being radially deformed in the direction away from the central axis of the piston 2 and being connected with the housing 1 by interference fit, the piston 2 is effectively prevented from moving in the direction away from the carrier 200 due to the decrease in gas pressure after the detonation device 3 explodes and burns, ensuring that the piston 2 cuts off the carrier 200, and preventing the residue generated after the detonation device 3 is detonated from leaking from the gap between the piston 2 and the housing 1, reducing the downtime, maintenance and cleaning time caused by the residue leakage, and improving the safety and reliability of the detonation type actuator 100.

[0071] 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 , and the end of the piston 2 away from the detonating device 3 extends out from the opening 11 .

[0072] Therefore, after the detonation device 3 is detonated, the end of the piston 2 close to the detonation device 3 moves rapidly toward the direction of the carrier 200 under the action of the shock wave, and the end of the piston 2 away from the detonation device 3 extends from the opening 11, thereby disconnecting the power supply end connected to the carrier 200 from the load end, thereby achieving the circuit disconnection effect of the detonation actuator 100. At the same time, the end of the piston 2 close to the detonation device 3 is radially deformed in the direction away from the central axis of the piston 2 and is connected with the housing 1 by interference fit, which effectively prevents the piston 2 from moving in the direction away from the carrier 200 due to the decrease in gas pressure after the explosion and combustion of the detonation device 3, ensuring that the piston 2 cuts off the carrier 200.

[0073] In some embodiments of the present invention, Figure 1-Figure 5As shown, the piston 2 includes a first section 21 and a second section 22. 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, one end of the second section 22 is connected to the end of the first section 21 away from the detonating device 3, and the radial dimension of the second section 22 is smaller than the aperture of the opening 11 along the radial direction of the piston 2. After the detonating device 3 is detonated, at least part of the second section 22 can extend out of the housing 1 from the opening 11. Thus, by such a setting, the first section 21 is blocked from extending out of the housing 1 from the opening 11, thereby limiting the displacement of the piston 2. At the same time, by the radial dimension of the second section 22 being smaller than the aperture of the opening 11, after the detonating device 3 is detonated, the end of the second section 22 away from the first section 21 can extend out of the housing 1 from the opening 11 and cut off the carrier 200, thereby improving the reliability of the detonating actuator 100.

[0074] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the end surface of the first section 21 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 first section 21, so as to achieve at least the first section 21 to be radially deformed in the direction away from the central axis of the piston 2 and to be interference-connected with the shell 1.

[0075] In some embodiments of the present invention, 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.

[0076] In some embodiments of the present invention, 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.

[0077] In some embodiments of the present invention, Figure 6 As shown, along the moving direction of the piston 2, the size of the first section 21 is a, and the size of the recess 211 is b, wherein b=a / 10. Thus, by limiting the size, the shock wave can enter the recess 211 through the open mouth of the recess 211, while ensuring the structural strength of the first section 21, so as to prevent the first section 21 from being damaged due to insufficient strength, and further improve the reliability of the detonation actuator 100.

[0078] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, a groove 212 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 212, further guiding and concentrating the energy of the shock wave entering the recess 211 and the groove 212, 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.

[0079] In some embodiments of the present invention, Figure 6 As shown, along the moving direction of the piston 2, the size of the first section 21 is a, and the size of the groove 212 is c, wherein c=6a / 10-7a / 10. It is understandable that if the size of the groove 212 along the moving direction of the piston 2 is too long, it will affect the structural strength of the first section 21, and if it is too short, the deformation degree of the first section 21 when it is expanded by force will be insufficient, and the effect of preventing the piston from rebounding cannot be achieved. Therefore, by setting the size of the first section 21 to be a, the size of the groove 212 to be c, and c=6a / 10-7a / 10, while ensuring the deformation degree of the first section 21 when it is expanded by force, the first section 21 is prevented from being damaged due to insufficient strength, thereby further improving the reliability of the detonation actuator 100.

[0080] In some embodiments of the present invention, Figure 6As shown, along the radial direction of the first section 21, the size of the first section 21 is d, and the size of the groove 212 is e, wherein e=d / 5-d / 6. It is understandable that if the size of the groove 212 along the radial direction of the first section 21 is too long, it will affect the structural strength of the first section 21, and if it is too short, the deformation degree of the first section 21 when it is expanded under force will be insufficient, and the effect of preventing the piston from rebounding cannot be achieved. Therefore, the setting of the size of the first section 21 being d, the size of the groove 212 being e, and e=d / 5-d / 6, while ensuring the deformation degree of the first section 21 when it is expanded under force, prevents the first section 21 from being damaged due to insufficient strength, and further improves the reliability of the detonation actuator 100.

[0081] In some embodiments, Figure 4 and Figure 5 As shown, before the detonation device 3 is detonated, the cross-sectional area of ​​the groove 212 is constant in the direction from the bottom wall of the groove 212 to the bottom wall of the recess 211. After the detonation device 3 is detonated, the cross-sectional area of ​​the groove 212 gradually increases in the direction from the bottom wall of the groove 212 to the bottom wall of the recess 211. Alternatively, before the detonation device 3 is detonated, the cross-sectional area of ​​the groove 212 gradually increases in the direction from the bottom wall of the groove 212 to the bottom wall of the recess 211. After the detonation device 3 is detonated, the cross-sectional area of ​​the groove 212 gradually increases in the direction from the bottom wall of the groove 212 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 212 are realized, so that the detonation actuator 100 meets different needs and improves versatility.

[0082] In some embodiments of the present invention, Figure 1-Figure 5 As shown, the peripheral wall of the piston 2 is provided with a sealing groove 213 extending in the circumferential direction of the piston 2, and the detonating actuator 100 further includes a sealing ring 4. The sealing ring 4 is located in the sealing groove 213 and is sealed and connected to the housing 1. Thus, 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 piston 2 and the housing 1, ensuring that the piston 2 cuts off the carrier 200 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.

[0083] In some embodiments of the present invention, the sealing groove 213 is arranged opposite to at least a portion of the groove 212. Thus, 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 212. The shock wave entering the recess 211 and the groove 212 causes the piston 2 to deform radially in a direction away from the central axis of the piston 2 and to be interference-connected with the housing 1. By arranging the sealing groove 213 opposite to at least a portion of the groove 212, the sealing effect in the sealing ring 4 is further enhanced, the leakage of shock waves or residues is further avoided, and the reliability is improved.

[0084] In some embodiments, Figure 4 and Figure 5 As shown, the end surface of the piston 2 facing the detonating device 3 is provided with a recess 211, the open mouth 2111 of the recess 211 faces the detonating device 3, and a groove 212 is further provided on the bottom wall of the recess 211, and at least a portion of the groove 212 is arranged opposite to the sealing ring 4. Therefore, after the detonating 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 212. The shock wave entering the recess 211 and the groove 212 causes the piston 2 to deform radially in the direction away from the central axis of the piston 2 and to be interference-connected with the housing 1. By at least a portion of the groove 212 being arranged opposite to the sealing ring 4, the sealing effect in the sealing ring 4 is further enhanced, and the leakage of shock waves or residues is further avoided, thereby improving reliability.

[0085] In some embodiments of the present invention, Figure 1-Figure 5 , Figure 7 and Figure 8 As shown in FIG. 1 , the cross-sectional area of ​​the second section 22 along the central axis of the piston 2 remains unchanged. Figure 1-Figure 5 As shown, after the detonator 3 is detonated, the end of the second section 22 away from the first section 21 cuts off the carrier 200. Figure 7 and Figure 8 As shown, along the central axis of the piston 2, the piston 2 includes a first subsection 221 and a second subsection 222, the first subsection 221 is located at one end of the second subsection 222 away from the first section 21, and in the direction from the detonating device 3 to the first section 21, the cross-sectional area of ​​the first subsection 221 along the central axis of the piston 2 gradually decreases, and the cross-sectional area of ​​the second subsection 222 along the central axis of the piston 2 remains unchanged. It can be understood that after the detonating device 3 is detonated, the first subsection 221 cuts off the carrier component 200 at the point where the cross-sectional area is the smallest.

[0086] Therefore, by such an arrangement, different structural forms of the piston 2 for cutting off the carrier component 200 are provided, so that the second section 22 can be selectively adjusted according to the shape of the carrier component 200, or can be selectively adjusted according to various ways of cutting off the carrier component 200 such as from the front or side, thereby further improving the reliability and versatility of the explosive actuator 100.

[0087] In some embodiments of the present invention, the outer wall of part of the piston 2 is in contact with the inner wall of the housing 1. Thus, such a configuration further ensures that the piston 2 can be connected with the housing 1 by interference fit after radial deformation away from the central axis of the piston 2, thereby improving reliability.

[0088] In some embodiments of the present invention, Figure 1 , Figure 2 , Figure 4 and Figure 6 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.

[0089] It can be understood that when the explosive actuator 100 is required to cut off the carrier component 200, 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 carrier component 200 under the action of the shock wave and cuts off the carrier component 200, thereby achieving the circuit disconnecting effect of the explosive actuator 100.

[0090] 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.

[0091] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the pistons 2 are multiple and spaced apart and include a first piston 23 and a second piston 24, the exhaust port 312 is and includes a first exhaust port 3121 and a second exhaust port 3122, the first piston 23 is arranged opposite to the first exhaust port 3121, the second piston 24 is arranged opposite to the second exhaust port 3122, and the openings 11 are multiple and correspond one to one to the multiple pistons 2.

[0092] Therefore, after the detonation device 3 is detonated, the shock wave spreads through the detonation chamber 311 on the base 31 toward the first exhaust port 3121 and the second exhaust port 3122, so that the first piston 23 and the second piston 24 extend from the corresponding opening 11 at one end away from the gunpowder box 32 to cut off the corresponding carrier component 200, thereby realizing the bidirectional synchronous drive output of the detonation actuator 100.

[0093] At the same time, the arrangement of the base 31 can ensure that the distance between the powder box 32 and the first piston 23 and the second piston 24 is the same, ensuring the synchronous movement of the first piston 23 and the second piston 24, and further improving the reliability.

[0094] In addition, since the first piston 23 and the second piston 24 both have corresponding exhaust ports 312, the first piston 23 and the second piston 24 can work independently without interfering with each other, so that the movement of the first piston 23 or the second piston 24 can be controlled separately 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.

[0095] In some embodiments of the present invention, Figure 6 As shown, the plurality of pistons 2 further include a third piston 25, the plurality of exhaust ports 312 further include a third exhaust port 3123, and the third piston 25 is arranged opposite to the third exhaust port 3123. Thus, after the detonation device 3 is detonated, the shock wave diffuses toward the first exhaust port 3121, the second exhaust port 3122 and the third exhaust port 3123 through the detonation chamber 311 on the base 31, so that the ends of the first piston 23, the second piston 24 and the third piston 25 that are away from the gunpowder box 32 extend from the corresponding opening 11 to cut off the corresponding carrier component 200, thereby realizing the three-way synchronous drive output of the detonation actuator 100.

[0096] Of course, the detonation actuator 100 of the present application is not limited thereto, and the piston 2 may be one, and the exhaust port 312 and the opening 11 may both 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 part, thereby realizing the unidirectional output or multi-directional synchronous drive output of the detonation actuator 100.

[0097] In some embodiments of the present invention, Figure 1 , Figure 2 , Figure 4 and Figure 6As 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 carrier 200 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.

[0098] In some embodiments of the present invention, after the detonation device 3 is detonated, the housing 1 matched with the piston 2 undergoes radial deformation in the direction away from the central axis of the piston 2, and the radial deformation amount of the housing 1 matched with the piston 2 in the direction away from the central axis of the piston 2 is less than the radial deformation amount of the piston 2 in the direction away from the central axis of the piston 2. Therefore, such a setting further ensures that the piston 2 undergoes radial deformation 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 actuator 100.

[0099] In some embodiments of the present invention, the piston 2 is an elastically deformable member. Therefore, after the detonation device 3 is detonated, the piston 2 is an elastically deformable member so that the piston 2 is radially deformed away from the central axis of the piston 2 and is interference-connected with the housing 1. Optionally, the piston 2 is a rubber member.

[0100] The motor controller according to the embodiment of the present invention is described below.

[0101] The motor controller according to the embodiment of the present invention comprises a three-phase copper busbar and an explosive actuator 100. The explosive actuator 100 is used to cut off at least two of the three-phase copper busbars.

[0102] It can be understood that the three-phase copper busbar of the motor controller is connected to the motor, and the motor controller is also connected to the battery. When the detonator 3 is not detonated, the three-phase copper busbar can be powered normally to ensure the circuit connectivity between the battery, the motor controller and the motor, so that the motor can work normally.

[0103] When the current is abnormal and the detonator 3 is detonated, the piston 2 moves rapidly toward the three-phase copper busbar 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 copper busbars, thereby cutting off the circuit between the battery and the motor, disconnecting the three-phase 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 safety of use.

[0104] At the same time, by causing at least the piston 2 to deform radially in a direction away from the central axis of the piston 2 and to be interference-connected with the housing 1, it is effectively prevented that the piston 2 moves in a direction away from the three-phase copper busbar due to the pressure drop after the explosion and combustion of the detonator 3, thereby ensuring that the piston 2 cuts off the three-phase copper busbar and preventing the residue generated after the detonation of the detonator 3 from leaking from the gap between the piston 2 and the housing 1, thereby reducing the downtime, maintenance and cleaning time caused by the leakage of residues and improving the safety and reliability of the motor controller.

[0105] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the pistons 2 are multiple and spaced apart and include a first piston 23 and a second piston 24, the exhaust port 312 is and includes a first exhaust port 3121 and a second exhaust port 3122, the first piston 23 is arranged opposite to the first exhaust port 3121, and the second piston 24 is arranged opposite to the second exhaust port 3122, the opening 11 is multiple and corresponds to the multiple pistons 2 one by one, the end of the first piston 23 facing away from the first exhaust port 3121 is opposite to one of the copper bars, and the end of the second piston 24 facing away from the second exhaust port 3122 is opposite to one of the copper bars.

[0106] Therefore, after the detonation device 3 is detonated, the shock wave spreads through the detonation chamber 311 on the base 31 toward the first exhaust port 3121 and the second exhaust port 3122, so that the end of the first piston 23 that is away from the first exhaust port 3121 extends from the corresponding opening 11 to cut off the corresponding copper bar, and the end of the second piston 24 that is away from the second exhaust port 3122 extends from the corresponding opening 11 to cut off the corresponding copper bar, thereby realizing the detonation actuator 100 cutting off two of the three-phase copper bars.

[0107] It should be noted that the piston 2 of the present application can also be one, and one piston 2 corresponds to two copper bars in the three-phase copper bar. Therefore, after the detonation device 3 is detonated, the shock wave spreads 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 exhaust port 312 extends from the opening 11 to cut off the two copper bars, thereby realizing that the detonation actuator 100 cuts off two copper bars in the three-phase copper bar.

[0108] According to the motor controller of the embodiment of the present invention, an explosive actuator 100 is provided, and the explosive actuator 100 is used to cut off at least two copper bars in the three-phase copper bar, so as to cut off the circuit between the battery and the motor, realize the disconnection of the three-phase alternating current between the motor controller and the motor, and then realize the circuit disconnection effect of the motor controller. At the same time, by at least the piston 2 being radially deformed in the direction away from the central axis of the piston 2 and being connected with the shell 1 with interference fit, it is effectively avoided that the pressure drop after the explosion and combustion of the detonator 3 causes the piston 2 to move in the direction away from the three-phase copper bar, ensures that the piston 2 cuts off the three-phase copper bar, and avoids the residue generated after the detonation of the detonator 3 from leaking from the gap between the piston 2 and the shell 1, reduces the downtime, maintenance and cleaning time caused by the leakage of residue, and improves the safety and reliability of the motor controller.

[0109] The powertrain according to the embodiment of the present invention is described below.

[0110] A powertrain according to an embodiment of the present invention includes a motor controller.

[0111] 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 of the three-phase copper bars, thereby cutting off the circuit between the battery and the motor, achieving the disconnection of the three-phase alternating current between the motor controller and the motor, and further achieving the circuit disconnection effect of the motor controller, thereby improving the reliability and safety of the powertrain.

[0112] At the same time, by causing at least the piston 2 to deform radially in a direction away from the central axis of the piston 2 and to be interference-connected with the housing 1, it is effectively prevented that the piston 2 moves in a direction away from the three-phase copper busbar due to a drop in gas pressure after the explosion and combustion of the detonator 3, thereby ensuring that the piston 2 cuts off the three-phase copper busbar and preventing the residue generated after the detonation of the detonator 3 from leaking from the gap between the piston 2 and the housing 1, thereby reducing the downtime, maintenance and cleaning time caused by residue leakage and improving the safety and reliability of the powertrain.

[0113] Next, a vehicle according to an embodiment of the present invention will be described.

[0114] A vehicle according to an embodiment of the present invention includes a powertrain.

[0115] 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 of the three-phase copper bars, thereby cutting off the circuit between the battery and the motor, realizing the disconnection of the three-phase alternating current between the motor controller and the motor, and further realizing the circuit disconnection effect of the motor controller, thereby improving the reliability and safety of the vehicle.

[0116] At the same time, by causing at least the piston 2 to deform radially in a direction away from the central axis of the piston 2 and to be interference-connected with the housing 1, it is effectively prevented that the piston 2 moves in a direction away from the three-phase copper busbar due to a drop in gas pressure after the explosion and combustion of the detonator 3, thereby ensuring that the piston 2 cuts off the three-phase copper busbar and preventing the residue generated after the detonation of the detonator 3 from leaking from the gap between the piston 2 and the housing 1, thereby reducing the downtime, maintenance and cleaning time caused by residue leakage and improving the safety and reliability of the vehicle.

[0117] 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.

[0118] 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 (100), characterized in that: include: A housing (1), wherein the housing (1) has an opening (11); A piston (2), the piston (2) being movably disposed in the housing (1); An ignition device (3) is arranged in the housing (1), and after the ignition device (3) is ignited, it can drive part of the piston (2) to extend out of the housing (1) from the opening (11), and at least the piston (2) 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 (100) according to claim 1, characterized in that: After the detonation device (3) is detonated, the end of the piston (2) close to the detonation device (3) undergoes radial deformation in a direction away from the central axis of the piston (2) and is interference-connected with the housing (1), and the end of the piston (2) away from the detonation device (3) extends out from the opening (11).

3. The explosive actuator (100) 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), one end of which is connected to an end of the first section (21) facing away from the detonating device (3); along the radial direction of the piston (2), the radial dimension of the second section (22) is smaller than the aperture of the opening (11); after the detonating device (3) is detonated, at least a portion of the second section (22) can extend out of the housing (1) from the opening (11).

4. The explosive actuator (100) according to claim 3, characterized in that: The end surface of the first section (21) facing the detonating device (3) is provided with a recess (211), and the open opening (2111) of the recess (211) faces the detonating device (3).

5. The explosive actuator (100) according to claim 4, characterized in that: After the detonation device (3) is detonated, the radial deformation of the first section (21) in a direction from the bottom wall of the recess (211) to the open mouth (2111) of the recess (211) gradually increases in a direction away from the central axis of the recess (211).

6. The explosive actuator (100) according to claim 4, characterized in that: In a direction from the bottom wall of the recess (211) to the open mouth (2111) of the recess (211), the cross-sectional area of ​​the recess (211) gradually increases.

7. The explosive actuator (100) according to claim 4, characterized in that: Along the moving direction of the piston (2), the size of the first section (21) is a, and the size of the recess (211) is b, wherein b=a / 10.

8. The explosive actuator (100) according to claim 4, characterized in that: A groove (212) is also provided on the bottom wall of the recess (211).

9. The explosive actuator (100) according to claim 8, characterized in that: Along the moving direction of the piston (2), the size of the first section (21) is a, and the size of the groove (212) is c, wherein c=6a / 10-7a / 10.

10. The explosive actuator (100) according to claim 8, characterized in that: Along the radial direction of the first section (21), the size of the first section (21) is d, and the size of the groove (212) is e, wherein e=d / 5-d / 6.

11. The explosive actuator (100) according to claim 10, 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). The detonation actuator (100) 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).

12. The explosive actuator (100) according to claim 11, characterized in that: The sealing groove (213) is arranged opposite to at least a portion of the groove (212).

13. The explosive actuator (100) according to claim 3, characterized in that: Along the direction of the central axis of the piston (2), the cross-sectional area of ​​the second section (22) remains unchanged; Or, along the direction of the central axis of the piston (2), the piston (2) comprises a first sub-segment (221) and a second sub-segment (222), the first sub-segment (221) being located at an end of the second sub-segment (222) away from the first segment (21), and in the direction from the detonation device (3) to the first segment (21), the cross-sectional area of ​​the first sub-segment (221) along the direction of the central axis of the piston (2) gradually decreases, and the cross-sectional area of ​​the second sub-segment (222) along the direction of the central axis of the piston (2) remains unchanged.

14. The explosive actuator (100) according to claim 1, characterized in that: The outer wall surface of a portion of the piston (2) is in contact with the inner wall surface of the housing.

15. The explosive actuator (100) according to claim 1, characterized in that: The detonation device (3) comprises: a base (31), the base (31) being located in the shell (1) and connected to the shell (1), the base (31) having an ignition chamber (311), the ignition chamber (311) having an exhaust port (312), the exhaust port (312) being arranged opposite to the piston (2); A powder box (32), wherein the powder box (32) is located in the detonation chamber (311); A fuse (33), one end of which is connected to the powder box (32), and the other end of which passes through the base (31) and extends out of the housing (1).

16. The explosive actuator (100) according to claim 15, characterized in that: The pistons (2) are multiple and spaced apart and include a first piston (23) and a second piston (24); the exhaust ports (312) are multiple and include a first exhaust port (3121) and a second exhaust port (3122); the first piston (23) is arranged opposite to the first exhaust port (3121), and the second piston (24) is arranged opposite to the second exhaust port (3122); and the openings (11) are multiple and correspond one-to-one to the multiple pistons (2).

17. The explosive actuator (100) according to claim 16, characterized in that: The plurality of pistons (2) further include a third piston (25), the plurality of exhaust ports (312) further include a third exhaust port (3123), and the third piston (25) and the third exhaust port (3123) are arranged opposite to each other.

18. The explosive actuator (100) according to claim 1, characterized in that: Also includes: A fixing component (5), wherein the fixing component (5) covers the outer wall of the shell (1) and the detonating device (3).

19. The explosive actuator (100) according to claim 1, characterized in that: After the detonation device (3) is detonated, the housing (1) matched with the piston (2) undergoes radial deformation in a direction away from the central axis of the piston (2), and the radial deformation amount of the housing (1) matched with the piston (2) in a direction away from the central axis of the piston (2) is smaller than the radial deformation amount of the piston (2) in a direction away from the central axis of the piston (2).

20. The explosive actuator (100) according to claim 1, characterized in that: The piston (2) is an elastically deformable member.

21. A motor controller, characterized in that: include: Three-phase copper busbar; According to the explosive actuator (100) according to any one of claims 1 to 20, the explosive actuator (100) is used to cut off at least two phases of the three-phase copper busbars.

22. A powertrain, characterized in that: Comprising a motor controller according to claim 21.

23. A vehicle, characterized in that: Comprising a powertrain according to claim 22.

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