Circuit breaker assembly, motor controller assembly and vehicle

Abstract

A circuit breaker assembly (10), a motor controller assembly (20) and a vehicle (100). The circuit breaker assembly (10) comprises a conductive plate (11), an insulating member (12) and a drive assembly (14). The conductive plate (11) comprises a middle section (112), and a buffer space (13) is provided between a first reinforcing portion (121) of the insulating member (12) and the middle section (112). The drive assembly (14) can strike the middle section (112) to make the middle section (112) flip or move towards the first reinforcing portion (121).

Description

Circuit breaker assembly, motor controller assembly, and vehicle

[0001] Priority information

[0002] This application claims priority to and the benefit of the filing date of the patent application with the China National Intellectual Property Office filed on August 6, 2024, with the patent application number 2024110692464, and incorporates it by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of vehicles, and more particularly, to a circuit breaker assembly, a motor controller assembly, and a vehicle. BACKGROUND

[0004] In the related art, when a short circuit occurs in the circuit of a vehicle, the piston of the circuit breaker assembly needs to hit the weak part of the conductive plate to cut off the conductive plate, so as to realize circuit power-off to protect the vehicle. When the piston of the circuit breaker assembly hits the conductive plate, since the weak part of the conductive plate needs to be hit off, the piston needs to be provided with a relatively large impact force. However, too large impact force is easy to make the weak part of the conductive plate fly away from the circuit breaker assembly, so that the weak part falls on other circuits to cause short circuit, thereby damaging the electronic devices of the other circuits. SUMMARY

[0005] The present application provides a circuit breaker assembly, a motor controller assembly, and a vehicle to solve or improve the technical problem that after the piston of the circuit breaker assembly hits off the conductive plate, the moving conductive plate is easy to fall on other circuits to cause short circuit, thereby damaging the electronic devices of the other circuits.

[0006] A circuit breaker assembly of an embodiment of the present application includes a conductive plate, an insulating piece, and a driving assembly. The conductive plate includes a first segment, an intermediate segment, and a second segment connected in sequence, the first segment is suitable for connecting a motor, the second segment is suitable for connecting a motor controller, a first weak part is formed at a position close to the first segment of the intermediate segment, and a second weak part is formed at a position close to the second segment of the intermediate segment; the conductive plate is installed on the insulating piece, the insulating piece includes a first reinforcing part, in a first direction, the first reinforcing part is arranged at intervals with the intermediate segment, and a buffer space is provided between the first reinforcing part and the intermediate segment; the driving assembly includes a driving piece and a piston, the driving piece is configured to drive the piston to hit the intermediate segment in the first direction, so as to make one of the first weak part and the second weak part break, and make the intermediate segment turn over or move towards one side of the first reinforcing part.

[0007] Thus, by setting the buffer space on the insulating piece, the conductive plate broken by the driving piece can be blocked by the first reinforcing part, so that the conductive plate falls into the buffer space, avoiding the middle section of the conductive plate flying away from the circuit breaker assembly and falling on other circuits to cause short circuit, thereby avoiding damage to the electronic devices of other circuits.

[0008] In some embodiments, a first projection area of the buffer space on the insulating piece along a second direction is located within a second projection area of the conductive plate on the insulating piece along the second direction, and the first direction is perpendicular to the second direction.

[0009] Thus, by setting the buffer space on the conductive plate corresponding to the middle section, the volume of the conductive plate can be reduced, thereby reducing the cost required for manufacturing the conductive plate, and the distance between the middle section and the insulating piece can be increased, thereby increasing the distance between the conductive plate and the insulating piece to some extent, reducing the space required by the circuit breaker assembly, and facilitating miniaturization of the circuit breaker assembly.

[0010] In some embodiments, a projection of the middle section along the first direction is located on the first reinforcing part.

[0011] Thus, by increasing the thickness of the first reinforcing part, the projection of the middle section along the first direction is located on the first reinforcing part, thereby increasing the structural strength of the insulating piece and avoiding damage to the insulating piece caused by the impact of the driving piece.

[0012] In some embodiments, the insulating piece further comprises a supporting part, the supporting part is connected to the first reinforcing part, and the supporting part is sleeved on the second section.

[0013] Thus, by setting the supporting part on the insulating piece, the supporting part is sleeved on the second section of the conductive plate, thereby fixing the conductive plate.

[0014] In some embodiments, the insulating piece further comprises a second reinforcing part, the second reinforcing part is connected to one side of the first reinforcing part along a third direction, and the second reinforcing part is connected to one side of the supporting part along the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0015] Thus, by setting the second reinforcing part on the insulating piece, the second reinforcing part can be connected to the first reinforcing part and the supporting part, thereby further fixing the supporting part and increasing the structural strength of the insulating piece.

[0016] In some embodiments, the insulating piece comprises an isolation part, the isolation part is connected to the supporting part, the isolation part is sleeved on the middle section close to the second section, and the isolation part is at least partially located between the middle section and the piston.

[0017] Thus, by sleeving the isolation part included in the insulating piece on the intermediate section, insulation between the intermediate section and the piston can be achieved, so as to avoid current flowing from the conductive plate to the driving piece and causing damage to the driving piece.

[0018] In some embodiments, the intermediate section includes a first notch, the first notch is arranged on a side of the intermediate section close to the driving piece, and the first notch is arranged close to the second weak part.

[0019] Thus, by arranging the first notch on the intermediate section close to the second weak part, stress generated when the intermediate section is impacted can be concentrated below the first notch, so that the second weak part is easily broken.

[0020] In some embodiments, in the second direction, the first notch and the second weak part are arranged with a spacing distance.

[0021] Thus, by arranging the first notch and the second weak part with a spacing distance, it can be avoided that the second weak part is too weak and is broken due to shaking of the circuit breaker assembly before the driving assembly impacts the intermediate section, thereby causing a short circuit.

[0022] In some embodiments, in the second direction, the axis of the piston is located between the first notch and the second weak part.

[0023] Thus, by arranging the axis of the piston between the first notch and the second weak part, the impact position of the piston can be determined, so that the piston accurately impacts the position where the intermediate section is easily broken.

[0024] In some embodiments, in the case where the intermediate section is semilunar in shape, in the second direction, the distance between the axis of the piston and the first notch is greater than or equal to 0.7 mm and less than or equal to 1.8 mm.

[0025] Thus, in the case where the intermediate section is semilunar in shape, by arranging the distance between the axis of the piston and the first notch to be between 0.7 mm and 1.8 mm, the piston can accurately impact the position where the intermediate section is easily broken.

[0026] In some embodiments, in the third direction, the distance between the axis of the piston and the center line of the thickness of the intermediate section is less than or equal to 1.8 mm.

[0027] Thus, in the case where the intermediate section is semilunar in shape, by arranging the distance between the axis of the piston and the center line of the thickness of the intermediate section to be less than or equal to 1.8 mm, the piston can accurately impact the position where the intermediate section is easily broken.

[0028] In some embodiments, in the case that the intermediate section is rectangular in shape, the distance between the axis of the piston and the first notch in the second direction is between 3.5 mm and 7.2 mm.

[0029] In this way, in the case that the intermediate section is rectangular in shape, by setting the distance between the axis of the piston and the first notch to be between 3.5 mm and 7.2 mm, the piston can accurately hit the position where the intermediate section is easily broken.

[0030] In some embodiments, in the third direction, the distance between the axis of the piston and the centerline of the thickness of the intermediate section is less than or equal to 0.6 mm.

[0031] In this way, in the case that the intermediate section is rectangular in shape, by setting the distance between the axis of the piston and the centerline of the thickness of the intermediate section to be less than or equal to 0.6 mm, the piston can accurately hit the position where the intermediate section is easily broken.

[0032] In some embodiments, the intermediate section includes a second notch, the second notch is disposed on the side of the intermediate section close to the driving member, and the second notch is disposed close to the first weak part.

[0033] In this way, by disposing the second notch on the side of the intermediate section close to the driving member and close to the first weak part, the stress of the piston hitting the intermediate section can be concentrated below the second notch instead of the first weak part, avoiding the first weak part from breaking during the hitting process.

[0034] In some embodiments, the second notch and the first weak part are spaced apart, and the spacing distance between the second notch and the first weak part is less than the spacing distance between the first notch and the second weak part.

[0035] In this way, by spacing the second notch and the first weak part apart, the first weak part can be prevented from being too weak, and the second weak part can be prevented from breaking due to the shaking of the breaker assembly before the driving assembly hits the intermediate section, thereby causing a short circuit. Furthermore, by setting the spacing distance between the second notch and the first weak part to be less than the spacing distance between the first notch and the second weak part, when being hit, the stress concentrated on the second weak part can be greater than the stress concentrated on the first weak part, so that the second weak part is more likely to break than the first weak part.

[0036] In some embodiments, the conductive plate includes two conductive plates arranged side by side, the insulating member connects the two conductive plates, the piston includes two pistons, and the driving member drives the two pistons to hit the two conductive plates in opposite directions, respectively.

[0037] Thus, by arranging two conductive plates side by side, the circuit breaker assembly can connect two circuits at the same time, and by arranging two pistons, the driving member can drive the two pistons to hit the two conductive plates at the same time, so that the efficiency of cutting off the circuit can be improved when a short circuit occurs.

[0038] In some embodiments, in the second direction, the first segment and the second segment are both at least partially disposed on the insulating member.

[0039] Thus, by arranging the first segment and the second segment on the insulating member, the first segment and the second segment can be fixed.

[0040] In some embodiments, the circuit breaker assembly comprises a fuse arranged on the insulating member, and the fuse is connected in parallel with the intermediate segment.

[0041] Thus, by arranging a fuse on the circuit breaker assembly and connecting the fuse in parallel with the intermediate segment, when the conductive plate is cut off, the current can be transferred to the fuse, and the arc generated can be extinguished by the fuse.

[0042] The motor controller assembly of the embodiments of the present application comprises the circuit breaker assembly of any one of the above embodiments and a motor controller, one end of the conductive plate is connected to the motor controller, and the other end of the conductive plate is adapted to be connected to a motor.

[0043] The vehicle of the embodiments of the present application comprises the circuit breaker assembly of any one of the above embodiments or the motor controller assembly of any one of the above embodiments.

[0044] Additional aspects and advantages of the embodiments of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0045] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0046] Fig. 1 is a structural schematic diagram of a vehicle of some embodiments of the present application;

[0047] Fig. 2 is a structural schematic diagram of a circuit breaker assembly of some embodiments of the present application;

[0048] Fig. 3 is a structural schematic diagram of an insulating member of some embodiments of the present application;

[0049] Fig. 4 is a rear structural schematic diagram of an insulating member of some embodiments of the present application;

[0050] Fig. 5 is a structural schematic diagram of a conductive plate of some embodiments of the present application;

[0051] Fig. 6 is a schematic view of a scenario in which the impact portion impacts the intermediate portion according to some embodiments of the present application;

[0052] Fig. 7 is a schematic view of a scenario in which the impact portion impacts the intermediate portion according to some embodiments of the present application;

[0053] Fig. 8 is a graph showing the relationship between the up-down installation deviation of the notch and the fracture speed according to some embodiments of the present application;

[0054] Fig. 9 is a schematic view of a scenario in which the impact portion impacts the intermediate portion according to some embodiments of the present application;

[0055] Fig. 10 is a schematic view of a scenario in which the impact portion impacts the intermediate portion according to some embodiments of the present application;

[0056] Fig. 11 is a graph showing the relationship between the left-right installation deviation of the notch and the fracture speed according to some embodiments of the present application;

[0057] Fig. 12 is a schematic view of a scenario in which the impact portion impacts the intermediate portion according to some embodiments of the present application;

[0058] Fig. 13 is a schematic view of a scenario in which the impact portion impacts the intermediate portion according to some embodiments of the present application;

[0059] Fig. 14 is a graph showing the relationship between the up-down installation deviation of the notch and the fracture speed according to some embodiments of the present application;

[0060] Fig. 15 is a schematic view of a scenario in which the impact portion impacts the intermediate portion according to some embodiments of the present application;

[0061] Fig. 16 is a schematic view of a scenario in which the impact portion impacts the intermediate portion according to some embodiments of the present application;

[0062] Fig. 17 is a graph showing the relationship between the left-right installation deviation of the notch and the fracture speed according to some embodiments of the present application;

[0063] Fig. 18 is a block diagram of a motor controller assembly of the notch according to some embodiments of the present application. DETAILED DESCRIPTION

[0064] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals are used throughout the figures to refer to the same or like components. The embodiments described below are illustrative only, and are not intended to be limiting on the present application.

[0065] In the description of the application, it should be understood that the orientation or positional relationship indicated by terms such as "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0066] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be mechanically connected, or it can be electrically connected. It can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0067] In the present application, unless otherwise explicitly specified and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0068] The disclosure herein provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and arrangements of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0069] In the related art, when a vehicle circuit is short-circuited due to a fault, a circuit breaker assembly in the vehicle needs to control a brake in the circuit breaker assembly to hit a conductive plate in the circuit breaker assembly, and to cut off a weak part of the conductive plate to achieve power-off of the vehicle circuit to protect the vehicle. However, when a piston in the brake hits the conductive plate, since the conductive plate needs to be hit off, the piston needs to be provided with a large thrust, but after the conductive plate is hit off, the moving conductive plate is easy to hit the insulating piece of the circuit breaker assembly, so that the insulating piece is damaged, thereby reducing the service life of the circuit breaker assembly.

[0070] To solve the above technical problems, an embodiment of the present application provides a circuit breaker assembly 10.

[0071] Please refer to FIG. 1, FIG. 2 and FIG. 3, the circuit breaker assembly 10 of the embodiment of the present application includes a conductive plate 11, an insulating piece 12 and a driving assembly 14. The conductive plate 11 includes a first segment 111, an intermediate segment 112 and a second segment 113 connected in sequence, the first segment 111 is suitable for connecting a motor 22, the second segment 113 is suitable for connecting a motor controller 21, the intermediate segment 112 is formed with a first weak part 1121 at a position close to the first segment 111, and is formed with a second weak part 1122 at a position close to the second segment 113; the conductive plate 11 is installed on the insulating piece 12, the insulating piece 12 includes a first reinforcing part 121, in a first direction, the first reinforcing part 121 is arranged at intervals with the intermediate segment 112, and a buffer space 13 is arranged between the first reinforcing part 121 and the intermediate segment 112; the driving assembly 14 includes a driving piece 141 and a piston 142, the driving piece 141 is configured to drive the piston 142 to hit the intermediate segment 112 in the first direction, so that one of the first weak part 1121 and the second weak part 1122 is broken, and the intermediate segment 112 is turned or moved towards one side of the first reinforcing part 121.

[0072] In this way, by arranging the buffer space 13 on the insulating piece 12, the conductive plate 11 hit off by the driving piece 141 can be blocked by the first reinforcing part 121, so that the conductive plate 11 falls in the buffer space 13, to a certain extent, avoiding the intermediate segment 112 of the conductive plate 11 flying out of the circuit breaker assembly 10 and falling on other circuits to cause short circuit, thereby avoiding damage to electronic devices of other circuits.

[0073] The vehicle 100 can be a new energy vehicle, for example, the vehicle 100 can be a pure electric vehicle or a hybrid vehicle. The vehicle 100 can include a plurality of battery packs, and the circuit connected between the plurality of battery packs (in series or in parallel) is provided with the circuit breaker assembly 10. By providing the circuit breaker assembly 10 in the circuit, the circuit between the plurality of battery packs can be disconnected in time to avoid damage to other battery packs due to an abnormality (such as overcurrent fire) of one of the battery packs. Optionally, the circuit breaker assembly 10 can also be provided on the circuit between the battery pack and the electrical control module of the vehicle 100. The vehicle 100 includes a motor controller assembly 20, and the motor controller assembly 20 includes a motor controller 21 and a motor 22.

[0074] Specifically, the circuit breaker assembly 10 includes a conductive plate 11, an insulating part 12, and a driving part 141. The conductive plate 11 is made of a conductive material, for example, the conductive material can be copper, iron, silver, aluminum, etc. The circuit breaker assembly 10 can be electrically connected to the circuit of the vehicle 100 through the conductive plate 11, so that the circuit of the vehicle 100 is conductive.

[0075] The conductive plate 11 can be provided in a flat plate structure, and the first segment 111, the intermediate segment 112, and the second segment 113 are formed on the conductive plate 11, and the first segment 111 and the second segment 113 are at least partially provided on the insulating part 12. The first segment 111 can be connected to the motor 22 included in the vehicle 100, the intermediate segment 112 is a breakable structure, and the shape of the intermediate segment 112 can be multiple, for example, the shape of the intermediate segment 112 is half-moon or rectangle, etc. When a short circuit occurs in the circuit of the vehicle 100, the circuit breaker assembly 10 can cut off the intermediate segment 112 to disconnect the circuit of the vehicle 100. A first weak part 1121 is formed at a position of the intermediate segment 112 close to the first segment 111. The second segment 113 can be used to connect the motor controller 21 included in the vehicle 100, and a second weak part 1122 is formed at a position of the intermediate segment 112 close to the second segment 113.

[0076] The insulating part 12 is made of an insulating polymer material, for example, the insulating polymer material can be polyphenylene sulfide, nylon, polyether ether ketone, etc. The conductive plate 11 is installed on the insulating part 12, so that the conductive plate 11 can be insulated from other components. The insulating part 12 can fix the conductive plate 11, for example, in the case that the intermediate segment 112 on the conductive plate 11 is broken, the insulating part 12 can fix the remaining conductive plate 11.

[0077] The insulating member 12 comprises a first reinforcing portion 121, which can be used to improve the structural strength of the insulating member 12. In the first direction shown in FIG. 1, i.e. the length direction of the conductive plate 11, the first reinforcing portion 121 can be arranged apart from the intermediate section 112, so that a buffer space 13 can be formed between the first reinforcing portion 121 and the intermediate section 112, which can be used to provide a movement space for the broken intermediate section 112 when it moves.

[0078] The drive assembly 14 comprises a drive member 141 and a piston 142. The drive member 141 is fixed on the insulating member 12 by bolts, and can be used to provide the force required for breaking the intermediate section 112. The drive member 141 can be an electronic ignition explosive device containing gunpowder, and the piston 142 is arranged on the drive member 141 and corresponds to the position of the intermediate section 112. When the drive member 141 receives a control signal, the drive member 141 can transmit the force generated by igniting the gunpowder to the piston 142, so that the piston 142 can hit the side of the intermediate section 112 away from the first reinforcing portion 121 in the first direction, and further make the piston 142 break the intermediate section 112, i.e. make the piston 142 break the first weak portion 1121 or the second weak portion 1122, so that the broken intermediate section 112 can be flipped or moved towards the first reinforcing portion 121 in the buffer space 13.

[0079] Referring to FIG. 2, in some embodiments, the first projection area of the buffer space 13 on the insulating member 12 in the second direction is located within the second projection area of the conductive plate 11 on the insulating member 12 in the second direction, and the first direction is perpendicular to the second direction.

[0080] In this way, by opening the buffer space 13 on the conductive plate 11 corresponding to the intermediate section 112, the volume of the conductive plate 11 can be reduced, thereby reducing the cost required for manufacturing the conductive plate 11, and the distance between the intermediate section 112 and the insulating member 12 can be increased, which reduces the distance between the conductive plate 11 and the insulating member 12 to a certain extent, reduces the space required by the circuit breaker assembly 10, and is beneficial to the miniaturization of the circuit breaker assembly 10.

[0081] Specifically, the shape and size of the buffer space 13 need to meet the condition of avoiding the middle section 112 from hitting the insulating member 12. Thus, the first projection area of the buffer space 13 on the insulating member 12 in the second direction is located within the second projection area of the conductive plate 11 on the insulating member 12 in the second direction, i.e. the part of the buffer space 13 can be arranged at the corresponding position of the conductive plate 11 and the insulating member 12, and the broken middle section 112 can be prevented from moving in the buffer space 13. It should be noted that the second direction is shown in FIG. 2, and the second direction can be parallel to the direction of gravity, or the second direction can be the width direction of the conductive plate 11, so that the first direction and the second direction are perpendicular to each other.

[0082] Referring to FIG. 2, in some embodiments, the projection of the middle section 112 in the first direction is located on the first reinforcing portion 121.

[0083] In this way, by increasing the thickness of the first reinforcing portion 121, the projection of the middle section 112 in the first direction is located on the first reinforcing portion 121, so that the structural strength of the insulating member 12 can be increased, and the insulating member 12 can be prevented from being damaged by the impact of the driving member 141.

[0084] Specifically, by arranging the first reinforcing portion 121 such that the projection of the middle section 112 in the first direction is located on the first reinforcing portion 121, i.e. increasing the thickness of the first reinforcing portion 121, when the first weak portion 1121 and the second weak portion 1122 are broken, the first reinforcing portion 121 can block the broken middle section 112, and the structural strength of the insulating member 12 can be improved, so that when the force generated by the impact of the middle section 112 is transmitted to the insulating member 12, the insulating member 12 can withstand the force and avoid damage.

[0085] Referring to FIGS. 2 and 3, in some embodiments, the insulating member 12 further comprises a supporting portion 122, the supporting portion 122 is connected to the first reinforcing portion 121, the supporting portion 122 is sleeved on the second section 113, and a rounded corner structure 15 is formed at the connection between the supporting portion 122 and the first reinforcing portion 121.

[0086] In this way, by arranging the supporting portion 122 on the insulating member 12, the supporting portion 122 is sleeved on the second section 113 of the conductive plate 11, so that the conductive plate 11 can be fixed, and the rounded corner is formed at the connection between the supporting portion 122 and the first reinforcing portion 121, so that the stress concentration on the insulating member 12 can be reduced, and the structural strength of the insulating member 12 can be improved.

[0087] Specifically, the insulating member 12 further comprises a support portion 122, which can be used to fix and support the conductive plate 11, and the support portion 122 comprises an upper support portion 1221 and a lower support portion 1222, the lower support portion 1222 can be connected with the first reinforcing portion 121, so that the lower support portion 1222 can transmit the force received to the first reinforcing portion 121 for sharing. The conductive plate 11 further comprises a second section 113, which can be used to connect the intermediate section 112 and the circuit of the vehicle 100, and the support portion 122 is sleeved on the second section 113, so that the support portion 122 can fix the second section 113.

[0088] By providing the round corner structure 15 at the connection between the lower support portion 1222 and the first reinforcing portion 121, the force generated by the impact on the intermediate section 112 can be dispersed at the round corner structure 15, thereby avoiding damage to the insulating member 12 caused by concentrated force.

[0089] Please refer to FIG. 2 and FIG. 4, in some embodiments, the insulating member 12 further comprises a second reinforcing portion 123, the second reinforcing portion 123 is connected with one side of the first reinforcing portion 121 along a third direction, and the second reinforcing portion 123 is connected with one side of the support portion 122 along the third direction, and the second reinforcing portion 123 is formed with a chamfer structure 16 on the side thereof facing the intermediate section 112 along the first direction, and the third direction is perpendicular to the first direction and the second direction.

[0090] In this way, by providing the second reinforcing portion 123 on the insulating member 12, the second reinforcing portion 123 can be connected with the first reinforcing portion 121 and the support portion 122, so as to further strengthen the fixation of the support portion 122 and the structural strength of the insulating member 12. And by forming the chamfer structure 16 on the side of the second reinforcing portion 123 facing the intermediate section 112, the concentration of stress on the insulating member 12 can be reduced, thereby strengthening the structural strength of the insulating member 12.

[0091] Specifically, the insulating member 12 further comprises a second reinforcing portion 123, which can be used to connect the first reinforcing portion 121 and the support portion 122. For example, along the third direction as shown in FIG. 2, the second reinforcing portion 123 can be connected with one side of the first reinforcing portion 121 along the third direction and one side of the support portion 122 along the third direction. Thus, the second reinforcing portion 123 can be used to fix the first reinforcing portion 121 and the support portion 122, so as to strengthen the structural strength of the insulating member 12.

[0092] By providing the chamfer structure 16 on the side of the second reinforcing portion 123 facing the intermediate section 112 along the first direction, when the force generated by the impact on the intermediate section 112 is transmitted to the second reinforcing portion 123, the force can be dispersed by the chamfer structure 16, thereby avoiding damage to the insulating member 12 caused by concentrated force.

[0093] Please refer to FIG. 2 and FIG. 3 again, in some embodiments, the side of the second section 113 facing the middle section 112 is a plane parallel to the first direction.

[0094] In this way, by setting the side of the second section 113 facing the middle section 112 as a plane parallel to the first direction, the middle section 112 after being broken can be prevented from colliding with the second section 113 when moving, thereby avoiding damage to the second section 113.

[0095] Specifically, the shape of the second section 113 needs to be adapted to the shape of the middle section 112. By setting the side of the second section 113 facing the middle section 112 as a plane parallel to the first direction as shown in FIG. 2, when the broken middle section 112 moves, the side of the second section 113 will not collide with the middle section 112, thereby avoiding damage to the insulating piece 12.

[0096] Please refer to FIG. 2, in some embodiments, the insulating piece 12 comprises an isolation part 124, the isolation part 124 is connected with the support part 122, the isolation part 124 is sleeved on the middle section 112 close to the second section 113, and the isolation part 124 is at least partially located between the middle section 112 and the piston 142.

[0097] In this way, by sleeving the isolation part 124 included in the insulating piece 12 on the middle section 112, the middle section 112 can be insulated from the piston 142, thereby avoiding current flowing from the conductive plate 11 to the driving piece 141 to cause damage to the driving piece 141.

[0098] Specifically, the insulating piece 12 further comprises an isolation part 124, which can be used to isolate the conductive plate 11. The isolation part 124 is fixedly connected with the support part 122, and the isolation part 124 is sleeved on the middle section 112, so that the isolation part 124 can fix the middle section 112, and when the piston 142 collides, the isolation part 124 can isolate the middle section 112 from the piston 142, thereby avoiding current flowing from the middle section 112 to the piston 142 to cause damage to the driving piece 141.

[0099] Please refer to FIG. 5 to FIG. 17, in some embodiments, the middle section 112 comprises a first notch 1123, the first notch 1123 is arranged on the side of the middle section 112 close to the driving piece 141, and the first notch 1123 is close to the second weak part 1122.

[0100] In this way, by arranging the first notch 1123 on the middle section 112 close to the second weak part 1122, the stress generated when the middle section 112 is impacted can be concentrated below the first notch 1123, thereby making the second weak part 1122 easy to be broken.

[0101] Specifically, the intermediate section 112 is provided with a first notch 1123 on the side facing the piston 142, and the first notch 1123 is arranged close to the second weak part 1122, and in the second direction, the first notch 1123 and the second weak part 1122 are arranged with a spacing distance. In this way, by arranging the first notch 1123 and the second weak part 1122 with a spacing distance, it is possible to avoid that the second weak part 1122 is too weak and is broken due to the shaking of the circuit breaker assembly 10 before the driving assembly 14 hits the intermediate section 112, thereby causing a short circuit.

[0102] The first notch 1123 can be used to concentrate the force generated by the piston 142 hitting the intermediate section 112. By measuring the fracture speed of the intermediate section 112 when it is broken, it is possible to determine whether the position of the piston 142 hitting the intermediate section 112 is at the position most easily broken, i.e. the position of the axis of the piston 142 between the first notch 1123 and the second weak part 1122. In this way, by arranging the axis of the piston 142 between the first notch 1123 and the second weak part 1122, it is possible to determine the position of the piston 142 hitting so that the piston 142 hits accurately at the position of the intermediate section 112 that is easily broken. Wherein the fracture speed is the average speed at the position close to the fracture of the intermediate section 112.

[0103] It should be noted that the fracture speed can be determined according to the initial impact speed of the piston 142, the up-down installation deviation of the first notch 1123, the left-right installation deviation of the conductive plate 11 and the thickness of the conductive plate 11. Wherein the initial impact speed of the piston 142 is that after the explosion process in the driving member 141 is completed, the explosion wave acts on the piston 142, so that the piston 142 obtains a certain kinetic energy, and the speed corresponding to the kinetic energy is the initial impact speed; the up-down installation deviation of the first notch 1123 is the distance between the projection point of the lower side of the first notch 1123 and the axis of the piston 142 on the thickness side of the intermediate section 112 along the parallel direction of the first notch 1123, i.e. d1 as shown in FIG. 7; the left-right installation deviation of the conductive plate 11 is the distance between the vertical line of the vertical direction of the middle line of the section of the thickness side of the intermediate section 112 and the vertical line of the axis of the piston 142, i.e. d2 as shown in FIG. 9.

[0104] The expression of the fracture speed with the initial impact speed of the piston 142, the up-down installation deviation of the first notch 1123, the left-right installation deviation of the conductive plate 11 and the thickness of the conductive plate 11 can be expressed as:

[0105] wherein V represents the breaking speed; Vi represents the initial impact speed of the piston 142; d1 represents the up-and-down installation deviation of the first notch 1123; d2 represents the left-and-right installation deviation of the conductive plate 11; σ represents the thickness of the intermediate section 112; a, b, c, a1, b1, c1, a2, b2, c2, a3, b3, c3 represent constants.

[0106] The initial impact speed of the piston 142 needs to be constrained to avoid the piston 142 from damaging the insulating member 12 due to too large force.

[0107] For example, the impact head initial speed constraint formula can be represented as:

[0108] wherein P(t) represents the corresponding explosion pressure curve of the propellant in the shown brake, s represents the area of the surface of the piston 142 subjected to the explosion wave, and m represents the mass of the piston 142.

[0109] For example, when the intermediate section 112 is in the shape of a half moon, the intermediate section 112 is made of copper material as the base material, the piston 142 is made of polycarbonate as the base material, and the initial impact speed of the piston 142 and the thickness of the intermediate section 112 are constant, as shown in FIGS. 8 and 11, the position of the intermediate section 112 subjected to the impact is at the up-and-down installation deviation d1 of the first notch 1123 of -1.8 mm to -0.7 mm, and the position of the intermediate section 112 subjected to the impact is at the left-and-right installation deviation d2 of the first notch 1123 of -1.8 mm to +1.8 mm. Outside this range, the deviation of the piston 142 at the thickness side of the intermediate section 112 will cause the easy-to-break structure to be distorted, resulting in the intermediate section 112 being unable to be broken. In the formula, a ∈ (0.5174, 0.6587), b ∈ (-17.84, -1.791), c ∈ (49.37, 50.43), a1 ∈ (-2.639, -1.033), b1 ∈ (-12.02, -9.885), a2 ∈ (-3.679, -2.619), c1 ∈ (60.71, 63), a3 ∈ (0.348, 2.564), b2 ∈ (-3.455, -2.625), c2 ∈ (55.79, 60.96), a4 ∈ (-1.605, -1.625), b3 ∈ (-3.953, -3.973), and c3 ∈ (82.56, 86.56) are determined within the 95% confidence interval.

[0110] The shape of the intermediate section 112 can affect the impact position of the piston 142.

[0111] For example, when the intermediate section 112 is rectangular, the intermediate section 112 is made of copper, the piston 142 is made of polycarbonate, the initial impact velocity of the piston 142 is constant, and the thickness of the intermediate section 112 is constant, as shown in FIG. 14 and FIG. 17, the intermediate section 112 is impacted at a position of the first gap 1123 with an installation deviation of d+3.5mm to +7.2mm up and down, and the intermediate section 112 is impacted at a position of the first gap 1123 with an installation deviation of -0.6mm to +0.6mm left and right. If the installation deviation of the piston 142 is out of the range, the easy-break structure will be deformed, and the intermediate section 112 will not be broken. The formula is determined as a∈(0.6574, 0.7287), b∈(-22.84, -5.751), a1∈(-10.56, -6.5), b1∈(-5.849, -4.705), c∈(63.09, 64.25), a2∈(-0.8427, 0.2598), c1∈(58.28, 87.25), a3∈(0.548, 2.284), b2∈(-2.885, -2.265), c2∈(56.85, 84.96), a4∈(5.663, 9.663), b3∈(-50.75, -64.75), and c3∈(156.2, 164.2) in a 95% confidence interval.

[0112] Referring to FIG. 2 and FIG. 3, in some embodiments, the intermediate section 112 includes a second gap 1124, which is disposed on a side of the intermediate section 112 close to the driving member 141 and close to the first weak portion 1121.

[0113] In this way, by disposing the second gap 1124 on the side of the intermediate section 112 close to the driving member 141 and close to the first weak portion 1121, the stress of the intermediate section 112 impacted by the piston 142 can be concentrated below the second gap 1124 instead of the first weak portion 1121, so that the first weak portion 1121 is prevented from being broken during the impact.

[0114] Specifically, the intermediate section 112 further includes a second gap 1124, which can be used to concentrate the force generated by the impact of the piston 142 on the intermediate section 112. As shown in FIG. 1, the second gap 1124 is disposed on a side of the intermediate section 112 close to the driving member 141 and close to the first weak portion 1121. That is, the second gap 1124 and the first weak portion 1121 are spaced apart, and the spacing distance between the second gap 1124 and the first weak portion 1121 is less than the spacing distance between the first gap 1123 and the second weak portion 1122.

[0115] Thus, by setting the second gap 1124 and the first weak part 1121 with a spacing distance, the first weak part 1121 can be prevented from being too weak, and the second weak part 1122 can be prevented from being broken due to the shaking of the circuit breaker assembly 10 before the intermediate section 112 is hit by the driving assembly 14, thus causing a short circuit. Also, by setting the spacing distance between the second gap 1124 and the first weak part 1121 to be smaller than the spacing distance between the first gap 1123 and the second weak part 1122, the stress concentrated on the second weak part 1122 can be greater than the stress concentrated on the first weak part 1121 when hit, thus the second weak part 1122 can be broken more easily than the first weak part 1121.

[0116] Referring to FIG. 2, in some embodiments, the conductive plate 11 can include two arranged side by side, the insulating member 12 can connect the two conductive plates 11, and the piston 142 can include two, the driving member 141 can drive the two pistons 142 to hit the two conductive plates 11 in opposite directions respectively.

[0117] Thus, by arranging two conductive plates 11 side by side, the circuit breaker assembly 10 can connect two circuits simultaneously, and by arranging two pistons 142, the driving member 141 can drive the two pistons 142 to hit the two conductive plates 11 simultaneously, thus the efficiency of cutting off the circuit can be improved when a short circuit occurs.

[0118] Specifically, the number of the conductive plate 11 can be two, and the two conductive plates 11 can be arranged side by side on the insulating member 12. Thus, by arranging two pistons 142 on the driving member 141, and by enabling the driving member 141 to drive the two pistons 142 to hit the two conductive plates 11 in opposite directions in the first direction respectively, the intermediate sections 112 of the two conductive plates 11 can be broken simultaneously.

[0119] Referring again to FIG. 2, in some embodiments, the circuit breaker assembly 10 can include a fuse 17 arranged on the insulating member 12, and the fuse 17 can be connected in parallel with the intermediate section 112.

[0120] Thus, by arranging the fuse 17 on the circuit breaker assembly 10, and by connecting the fuse 17 in parallel with the intermediate section 112, when the conductive plate 11 is cut off, the current can flow through the fuse 17, and the electric arc generated can be extinguished by the fuse 17.

[0121] In particular, the circuit breaker assembly 10 further comprises a fuse 17 which can be used to eliminate the arc generated by the circuit. The fuse 17 and the intermediate section 112 can be in parallel in the circuit. When the circuit is working normally, the resistance of the conductive plate 11 is much smaller than that of the fuse 17, and most of the current will flow through the conductive plate 11. When the circuit needs to be disconnected abnormally, the driving member 141 strikes the intermediate section 112, so that the current is transferred to the fuse 17, and the fuse 17 is fused under large current, which can eliminate the arc generated by the cutting of the conductive plate 11, and improve the safety of the circuit breaker assembly 10.

[0122] In the description of the present specification, the description referring to the terms "certain embodiments", "in one example", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0123] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are optional, and cannot be understood as a limitation of the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A circuit breaker assembly (10), wherein, The utility model relates to an electric machine control device, including: A conductive plate (11) includes first section (111), intermediate section (112) and second section (113) connected in turn, first section (111) is suitable for connecting motor (22), second section (113) is suitable for connecting motor controller (21), the position of intermediate section (112) is formed with first weak part (1121) near first section (111), the position of intermediate section (112) is formed with second weak part (1122) near second section (113); Insulating piece (12), the conductive plate (11) is installed on the insulating piece (12), the insulating piece (12) includes first reinforcing portion (121), in first direction, first reinforcing portion (121) is spaced apart from intermediate section (112) and is provided with buffer space (13) between first reinforcing portion (121) and intermediate section (112); Driving assembly (14), the driving assembly (14) includes drive piece (141) and piston (142), drive piece (141) is configured as drive piston (142) and hit intermediate section (112) in first direction, so that one of first weak part (1121) and second weak part (1122) breaks, and makes intermediate section (112) overturn or move towards the side of first reinforcing portion (121).

2. The circuit breaker assembly (10) of claim 1, wherein, The first projection area of buffer space (13) on the insulating piece (12) along the second direction is located in the second projection area of the conductive plate (11) on the insulating piece (12) along the second direction, and the first direction and the second direction are perpendicular to each other.

3. The circuit breaker assembly (10) of claim 1, wherein, The projection of intermediate section (112) along the first direction is located in first reinforcing portion (121).

4. The circuit breaker assembly (10) of claim 1, wherein, The insulating piece (12) further includes support portion (122), the support portion (122) is connected first reinforcing portion (121), and the support portion (122) is sleeved on second section (113).

5. The circuit breaker assembly (10) of claim 4, wherein, The insulating piece (12) further includes second reinforcing portion (123), the second reinforcing portion (123) is connected to the side of first reinforcing portion (121) along the third direction, and the second reinforcing portion (123) is connected to the side of support portion (122) along the third direction, and the third direction is perpendicular to the first direction and the second direction.

6. The circuit breaker assembly (10) of claim 4, wherein, The insulating piece (12) includes isolation portion (124), the isolation portion (124) is connected with the support portion (122), the isolation portion (124) is sleeved on the intermediate section (112) near the second section (113), and the isolation portion (124) is at least partially located between the intermediate section (112) and the piston (142).

7. The circuit breaker assembly (10) of any of claims 1-6, wherein, The intermediate section (112) includes first notch (1123), the first notch (1123) is arranged on the side of the intermediate section (112) near the drive piece (141), and the first notch (1123) is arranged near the second weak part (1122).

8. The circuit breaker assembly (10) of claim 7, wherein, In the second direction, the first gap (1123) and the second weak portion (1122) are spaced apart.

9. The circuit breaker assembly (10) of claim 7, wherein, In the second direction, the axis of the piston (142) is located between the first gap (1123) and the second weak portion (1122).

10. The circuit breaker assembly (10) of claim 7, wherein, In the case where the intermediate section (112) is semilunar in shape, in the second direction, the axis of the piston (142) is located at a distance greater than or equal to 0.7 mm and less than or equal to 1.8 mm from the first gap (1123).

11. The circuit breaker assembly (10) of claim 10, wherein, In the third direction, the distance between the axis of the piston (142) and the midline of the thickness of the intermediate section (112) is less than or equal to 1.8 mm.

12. The circuit breaker assembly (10) of claim 7, wherein, In the case where the intermediate section (112) is rectangular in shape, in the second direction, the axis of the piston (142) is located at a distance greater than or equal to 3.5 mm and less than or equal to 7.2 mm from the first gap (1123).

13. The circuit breaker assembly (10) of claim 10, wherein, In the third direction, the distance between the axis of the piston (142) and the midline of the thickness of the intermediate section (112) is less than or equal to 0.6 mm.

14. The circuit breaker assembly (10) of any of claims 1-6, wherein, The intermediate section (112) comprises a second gap (1124) provided on the side of the intermediate section (112) close to the driving member (141), and the second gap (1124) is provided close to the first weak portion (1121).

15. The circuit breaker assembly (10) of claim 14, wherein, The second gap (1124) and the first weak portion (1121) are spaced apart, and the spacing distance between the second gap (1124) and the first weak portion (1121) is less than the spacing distance between the first gap (1123) and the second weak portion (1122).

16. The circuit breaker assembly (10) of any one of claims 1-6, wherein, The conductive plates (11) comprise two plates arranged side by side, the insulating member (12) connects the two conductive plates (11), the pistons (142) comprise two pistons, and the driving member (141) drives the two pistons (142) to respectively impact the two conductive plates (11) in opposite directions.

17. The circuit breaker assembly (10) of claim 16, wherein, In the second direction, the first section (111) and the second section (113) are both at least partially provided on the insulating member (12).

18. The circuit breaker assembly (10) of any one of claims 1-6, wherein, The circuit breaker assembly (10) comprises a fuse (17) provided on the insulating member (12), and the fuse (17) is connected in parallel with the intermediate section (112).

19. An electric machine controller assembly (20), wherein, The circuit breaker assembly (10) of any one of claims 1-18 and a motor controller (21), one end of the conductive plate (11) is connected to the motor controller (21), and the other end of the conductive plate (11) is adapted to be connected to a motor (22).

20. A vehicle (100), wherein The circuit breaker assembly (10) of any one of claims 1-18 or the motor controller assembly (20) of claim 19.

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