Circuit breaker assembly, motor controller assembly and vehicle

Abstract

The present invention discloses a circuit breaker assembly, a motor controller assembly and a vehicle, which are used in the field of vehicle technology. The circuit breaker assembly includes a conductive plate, an insulating member and a driving assembly. The conductive plate includes a first section, a middle section and a second section connected in sequence, the first section is used to connect the motor, the second section is used to connect the motor controller, the middle section is formed with a first weak portion near the first section, and the middle section is formed with a second weak portion near the second section; the conductive plate is mounted on the insulating member, the insulating member includes a first reinforcement portion, the first reinforcement portion is spaced apart from the middle section in a first direction, and a buffer space is provided between the first reinforcement portion and the middle section; the driving assembly includes a driving member and a piston, the driving member is configured to drive the piston to hit the middle section in a first direction, so that one of the first weak portion and the second weak portion breaks, and the middle section flips or moves toward one side of the first reinforcement portion. Avoid the middle section from falling onto other circuits and causing damage to electronic devices.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and more particularly to a circuit breaker assembly, a motor controller assembly and a vehicle. Background Art

[0002] In the related art, when a short circuit occurs in the circuit of a vehicle, it is necessary to control the piston of the circuit breaker assembly to hit the weak part of the conductive plate to cut off the conductive plate, so as to cut off the circuit and protect the vehicle. When the piston of the circuit breaker assembly hits the conductive plate, it is necessary to break the weak part of the conductive plate, so the piston needs to be set with a large impact force. However, too large an impact force can easily cause the weak part of the conductive plate to fly away from the circuit breaker assembly, so that the weak part falls on other circuits to cause a short circuit, thereby damaging the electronic components of other circuits. Summary of the invention

[0003] The embodiments of the present invention provide 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 breaks the conductive plate, the moving conductive plate is likely to fall onto other circuits and cause a short circuit, thereby damaging the electronic devices of other circuits.

[0004] A circuit breaker assembly according to an embodiment of the present invention comprises a conductive plate, an insulating member and a driving assembly. The conductive plate comprises a first section, a middle section and a second section connected in sequence, the first section is suitable for connecting a motor, the second section is suitable for connecting a motor controller, a first weak portion is formed at a position of the middle section close to the first section, and a second weak portion is formed at a position of the middle section close to the second section; the conductive plate is mounted on the insulating member, the insulating member comprises a first reinforcement portion, in a first direction, the first reinforcement portion is spaced apart from the middle section, and a buffer space is provided between the first reinforcement portion and the middle section; the driving assembly comprises a driving member and a piston, the driving member is configured to drive the piston to impact the middle section in the first direction, so as to break one of the first weak portion and the second weak portion, and cause the middle section to flip or move toward one side of the first reinforcement portion.

[0005] In this way, by providing a buffer space on the insulating part, the conductive plate broken by the driving part can be blocked by the first reinforcement part, so that the conductive plate falls into the buffer space, which to a certain extent prevents the middle section of the conductive plate from flying away from the circuit breaker assembly and falling on other circuits to cause a short circuit, thereby avoiding damage to electronic devices in other circuits.

[0006] In some embodiments, a first projection area of ​​the buffer space along the second direction on the insulating member is located within a second projection area of ​​the conductive plate along the second direction on the insulating member, and the first direction is perpendicular to the second direction.

[0007] In this way, by opening a 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 to manufacture the conductive plate, and the distance at which the middle section hits the insulating member can be increased, which increases the distance between the conductive plate and the insulating member to a certain extent, reduces the space required to be occupied by the circuit breaker assembly, and is conducive to the miniaturization of the circuit breaker assembly.

[0008] In some embodiments, a projection of the middle section along the first direction is located on the first reinforcement portion.

[0009] In this way, by increasing the thickness of the first reinforcement portion, the projection of the middle section along the first direction is located on the first reinforcement portion, thereby increasing the structural strength of the insulating member and preventing the insulating member from being damaged by the impact of the driving member.

[0010] In some embodiments, the insulating member further includes a supporting portion, the supporting portion is connected to the first reinforcing portion, and the supporting portion is sleeved on the second section.

[0011] In this way, by arranging the support portion on the insulating member so that the support portion is sleeved on the second section of the conductive plate, the conductive plate can be fixed.

[0012] In some embodiments, the insulating member also includes a second reinforcement portion, which connects a side surface of the first reinforcement portion along a third direction, and the second reinforcement portion connects a side surface of the support portion along the third direction, and the third direction is perpendicular to both the first direction and the second direction.

[0013] In this way, by arranging the second reinforcement part on the insulating member, the second reinforcement part can connect the first reinforcement part and the support part, thereby further strengthening the fixation of the support part and strengthening the structural strength of the insulating member.

[0014] In certain embodiments, the insulating member includes an isolating portion, the isolating portion is connected to the supporting portion, the isolating portion is sleeved on the middle section near the second section, and the isolating portion is at least partially located between the middle section and the piston.

[0015] In this way, by sleeve-arranging the isolating portion included in the insulating member on the middle section, the middle section and the piston can be insulated, thereby preventing current from flowing from the conductive plate to the driving member and causing damage to the driving member.

[0016] In some embodiments, the middle section includes a first notch, the first notch is arranged on a side of the middle section close to the driving member, and the first notch is arranged close to the second weak portion.

[0017] In this way, by providing the first notch at the middle section near the second weak portion, the stress generated when the middle section is impacted can be concentrated below the first notch, so that the second weak portion can be easily broken.

[0018] In some embodiments, in the second direction, the first notch and the second weak portion are spaced apart.

[0019] In this way, by setting a spacing distance between the first notch and the second weak portion, it is possible to avoid the second weak portion being too weak and the second weak portion being broken due to the shaking of the circuit breaker assembly before the driving assembly hits the middle section, thereby preventing a short circuit.

[0020] In some embodiments, in the second direction, the axis of the piston is located between the first notch and the second weak portion.

[0021] In this way, by arranging the axis of the piston between the first notch and the second weak portion, the impact position of the piston can be determined, so that the piston accurately impacts the position where the middle section is easily broken.

[0022] In certain embodiments, when the shape of the middle section is half-moon shaped, 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.

[0023] Thus, when the shape of the middle section is a half-moon shape, by setting the distance between the axis of the piston and the first notch between 0.7 mm and 1.8 mm, the piston can accurately hit the position where the middle section is easily broken.

[0024] In certain embodiments, in the third direction, a distance between the axis of the piston and a midline of the thickness of the middle section is less than or equal to 1.8 mm.

[0025] Thus, when the shape of the middle section is half-moon-shaped, by setting the distance between the axis of the piston and the midline of the thickness of the middle section to be less than or equal to 1.8 mm, the piston can accurately strike the position where the middle section is easily broken.

[0026] In certain embodiments, when the shape of the middle section is rectangular, in the second direction, the distance between the axis of the piston and the first notch is greater than or equal to 3.5 mm and less than or equal to 7.2 mm.

[0027] Thus, when the shape of the middle section is rectangular, by setting the distance between the axis of the piston and the first notch between 3.5 mm and 7.2 mm, the piston can accurately hit the position where the middle section is easily broken.

[0028] In certain embodiments, in the third direction, a distance between the axis of the piston and a centerline of the thickness of the middle section is less than or equal to 0.6 mm.

[0029] Thus, when the shape of the middle section is rectangular, by making the distance between the axis of the piston and the midline of the thickness of the middle section less than or equal to 0.6, the piston can accurately hit the position where the middle section is easily broken.

[0030] In some embodiments, the middle section includes a second notch, the second notch is arranged on a side of the middle section close to the driving member, and the second notch is arranged close to the first weak portion.

[0031] In this way, by setting a second notch on one side of the middle section close to the driving member and close to the first weak part, the stress of the piston hitting the middle section can be concentrated below the second notch instead of the first weak part, thereby preventing the first weak part from breaking during the impact.

[0032] In some embodiments, the second notch and the first weak portion are spaced apart, and the spacing distance between the second notch and the first weak portion is smaller than the spacing distance between the first notch and the second weak portion.

[0033] Thus, by setting a spacing distance between the second notch and the first weak part, the first weak part can be prevented from being too weak, and the second weak part can be prevented from being broken due to the shaking of the circuit breaker assembly before the driving assembly hits the middle section, thereby preventing a short circuit. And by setting the spacing distance between the second notch and the first weak part to be smaller than the spacing distance between the first notch and the second weak part, when 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 easier to break than the first weak part.

[0034] In some embodiments, the conductive plates include two disposed side by side, the insulating member connects the two conductive plates, the pistons include two, and the driving member drives the two pistons to impact the two conductive plates respectively in opposite directions.

[0035] In this way, 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, thereby improving the efficiency of cutting off the circuit when a short circuit occurs.

[0036] In some embodiments, in the second direction, both the first segment and the second segment are at least partially disposed on the insulating member.

[0037] In this way, by arranging parts of the first section and the second section on the insulating member, the first end and the second section can be fixed.

[0038] In certain embodiments, the circuit breaker assembly includes a fuse disposed on the insulating member, the fuse being connected in parallel with the intermediate section.

[0039] In this way, by arranging the fuse on the circuit breaker assembly and connecting the fuse in parallel with the middle section, when the conductive plate is cut off, the current can be transferred to the fuse, and the generated arc can be extinguished by the fuse.

[0040] The motor controller assembly of the embodiment of the present invention comprises the circuit breaker assembly and the motor controller described in any one of the above embodiments, one end of the conductive plate is connected to the motor controller, and the other end of the conductive plate is suitable for connecting to the motor.

[0041] The vehicle according to the embodiment of the present invention includes the circuit breaker assembly described in any one of the above embodiments or the motor controller assembly described in any one of the above embodiments.

[0042] Additional aspects and advantages of embodiments of the present invention will be given in part in the following description and in part will be obvious from the following description or learned through practice of embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] 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:

[0044] Figure 1 is a schematic diagram of the structure of a vehicle according to some embodiments of the present invention;

[0045] Figure 2 is a schematic structural diagram of a circuit breaker assembly according to certain embodiments of the present invention;

[0046] Figure 3 is a schematic structural diagram of an insulating member according to some embodiments of the present invention;

[0047] Figure 4 is a schematic diagram of the rear view structure of an insulating member according to some embodiments of the present invention;

[0048] Figure 5 is a schematic structural diagram of a conductive plate according to some embodiments of the present invention;

[0049] Figure 6 is a schematic diagram of a scene in which the impact part impacts the middle section according to some embodiments of the present invention;

[0050] Figure 7is a schematic diagram of a scene in which the impact part impacts the middle section according to some embodiments of the present invention;

[0051] Figure 8 is a line graph showing the relationship between the upper and lower installation deviations of the notch and the fracture speed in certain embodiments of the present invention;

[0052] Fig. 9 is a schematic diagram of a scene in which the impact part impacts the middle section according to some embodiments of the present invention;

[0053] Fig.10 is a schematic diagram of a scene in which the impact part impacts the middle section according to some embodiments of the present invention;

[0054] Fig.11 is a line graph showing the relationship between the left and right installation deviations of the notch and the fracture speed in certain embodiments of the present invention;

[0055] Fig.12 is a schematic diagram of a scene in which the impact part impacts the middle section according to some embodiments of the present invention;

[0056] Fig.13 is a schematic diagram of a scene in which the impact part impacts the middle section according to some embodiments of the present invention;

[0057] Fig.14 is a line graph showing the relationship between the upper and lower installation deviations of the notch and the fracture speed in certain embodiments of the present invention;

[0058] Fig.15 is a schematic diagram of a scene in which the impact part impacts the middle section according to some embodiments of the present invention;

[0059] Fig.16 is a schematic diagram of a scene in which the impact part impacts the middle section according to some embodiments of the present invention;

[0060] Fig.17 It is a line graph showing the relationship between the left and right installation deviations of the notch and the fracture speed in certain embodiments of the present invention.

[0061] Description of Figure Numbers:

[0062] 100. Vehicle; 10. Circuit breaker assembly; 11. Conductive plate; 111. First section; 112. Middle section; 1121. First weak portion; 1122. Second weak portion; 1123. First notch; 1124. Second notch; 113. Second section; 12. Insulator; 121. First reinforcement portion; 122. Support portion; 1221. Upper support portion; 1222. Lower support portion; 123. Second reinforcement portion; 124. Isolation portion; 13. Buffer space; 14. Drive assembly; 141. Drive member; 142. Piston; 15. Rounded corner structure; 16. Chamfered corner structure; 17. Fuse; 20. Motor controller assembly; 21. Motor controller; 22. Motor. DETAILED DESCRIPTION

[0063] 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.

[0064] 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" 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 limiting the present invention. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0065] 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 directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0067] The disclosure herein provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may appreciate the application of other processes and / or the use of other materials.

[0068] In the related art, when a short circuit occurs in a circuit of a vehicle due to a fault, the circuit breaker assembly in the vehicle needs to control the brake in the circuit breaker assembly to hit the conductive plate in the circuit breaker assembly, and cut off the weak part of the conductive plate to cut off the power of the vehicle circuit to protect the vehicle. However, when the piston in the brake hits the conductive plate, it is necessary to break the conductive plate, so the piston needs to be set with a large thrust. However, after breaking the conductive plate, the moving conductive plate is easy to hit the insulating part of the circuit breaker assembly, causing the insulating part to be damaged, thereby reducing the service life of the circuit breaker assembly.

[0069] In order to solve the above technical problems, an embodiment of the present invention provides a circuit breaker assembly 10 .

[0070] See also Figure 1 , Figure 2 and Figure 3 A circuit breaker assembly 10 according to an embodiment of the present invention includes a conductive plate 11 , an insulating member 12 and a driving assembly 14 . The conductive plate 11 includes a first section 111, a middle section 112 and a second section 113 connected in sequence, the first section 111 is suitable for connecting the motor 22, the second section 113 is suitable for connecting the motor controller 21, the middle section 112 is formed with a first weak portion 1121 near the first section 111, and the middle section 112 is formed with a second weak portion 1122 near the second section 113; the conductive plate 11 is installed on the insulating member 12, the insulating member 12 includes a first reinforcing portion 121, in a first direction, the first reinforcing portion 121 is spaced apart from the middle section 112, and a buffer space 13 is provided between the first reinforcing portion 121 and the middle section 112; the driving assembly 14 includes a driving member 141 and a piston 142, the driving member 141 is configured to drive the piston 142 to hit the middle section 112 in the first direction, so as to break one of the first weak portion 1121 and the second weak portion 1122, and cause the middle section 112 to flip or move toward one side of the first reinforcing portion 121.

[0071] In this way, by providing a buffer space 13 on the insulating member 12, the conductive plate 11 that is broken by the driving member 141 can be blocked by the first reinforcement portion 121, so that the conductive plate 11 falls into the buffer space 13, which to a certain extent prevents the middle section 112 of the conductive plate 11 from flying away from the circuit breaker assembly 10 and falling on other circuits to cause a short circuit, thereby avoiding damage to electronic devices in other circuits.

[0072] Among them, the vehicle 100 can be a new energy vehicle, for example, the vehicle 100 can be a pure electric vehicle or a hybrid vehicle, etc. The vehicle 100 can include multiple battery packs, and a circuit breaker assembly 10 is provided on the circuit in which the multiple battery packs are connected (in series or in parallel). By providing the circuit breaker assembly 10 in the circuit, the circuit between the multiple battery packs can be disconnected in time to avoid damage to other battery packs due to an abnormality in one of the battery packs (such as overcurrent and fire). 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. And the vehicle 100 includes a motor controller assembly 20, and the motor controller assembly 20 includes a motor controller 21 and a motor 22.

[0073] Specifically, the circuit breaker assembly 10 includes a conductive plate 11, an insulating member 12, and a driving member 141. The conductive plate 11 is made of a conductive material, for example, the conductive material may be a metal material such as copper, iron, silver, aluminum, etc. Thus, 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 turned on.

[0074] The conductive plate 11 can be shaped as a flat plate structure, and a first section 111, a middle section 112, and a second section 113 are formed on the conductive plate 11, and the first section 111 and the second section 113 are at least partially arranged on the insulating member 12. The first section 111 can be connected to the motor 22 included in the vehicle 100, the middle section 112 is a breakable structure, and the middle section 112 can have multiple shapes, for example, the middle section 112 is in a half-moon shape or a rectangular shape. When a short circuit occurs in the circuit of the vehicle 100, the circuit breaker assembly 10 can disconnect the circuit of the vehicle 100 by cutting off the middle section 112. A first weak portion 1121 is formed at a position of the middle section 112 close to the first section 111. The second section 113 can be used to connect to the motor controller 21 included in the vehicle 100, and a second weak portion 1122 is formed at a position of the middle section 112 close to the second section 113.

[0075] The insulating member 12 is made of an insulating polymer material, for example, the insulating polymer material may be polyphenylene sulfide, nylon, polyetheretherketone, etc. The conductive plate 11 is mounted on the insulating member 12, so that the conductive plate 11 can be insulated from other components. In addition, the insulating member 12 can fix the conductive plate 11. For example, when the middle section 112 on the conductive plate 11 is broken, the insulating member 12 can fix the remaining conductive plate 11.

[0076] The insulating member 12 includes a first reinforcement portion 121, which can be used to improve the structural strength of the insulating member 12. Figure 1 In the first direction shown, that is, the length direction of the conductive plate 11, the first reinforcement portion 121 can be spaced apart from the middle section 112, so that a buffer space 13 can be formed between the first reinforcement portion 121 and the middle section 112. The buffer space 13 can be used to provide movement space for the broken middle section 112 when the middle section 112 is broken.

[0077] The driving assembly 14 includes a driving member 141 and a piston 142. The driving member 141 is fixed to the insulating member 12 by bolts, and the driving member 141 can be used to provide the force required to break the middle section 112. The driving member 141 can be an electronic ignition explosion device containing gunpowder, and the piston 142 is arranged on the driving member 141, and the position of the piston 142 corresponds to the middle section 112, so that when the driving member 141 receives a control signal, the driving member 141 can transmit the force generated by the ignition of gunpowder to the piston 142, so that the piston 142 can hit the side of the middle section 112 away from the first reinforcement part 121 in the first direction, and then the piston 142 can break the middle section 112, that is, the piston 142 can break the first weak part 1121 or the second weak part 1122, so that the broken middle section 112 is turned over or moved toward the first reinforcement part 121 in the buffer space 13.

[0078] See also Figure 2 In some embodiments, a first projection area of ​​the buffer space 13 on the insulating member 12 along the second direction is located within a second projection area of ​​the conductive plate 11 on the insulating member 12 along the second direction, and the first direction is perpendicular to the second direction.

[0079] In this way, by opening a buffer space 13 on the conductive plate 11 corresponding to the middle section 112, the volume of the conductive plate 11 can be reduced, thereby reducing the cost required to manufacture the conductive plate 11, and the distance at which the middle section 112 hits the insulating member 12 can be increased, which to a certain extent reduces the distance between the conductive plate 11 and the insulating member 12, reduces the space required to be occupied by the circuit breaker assembly 10, and is conducive to the miniaturization of the circuit breaker assembly 10.

[0080] Specifically, the shape and size of the buffer space 13 need to be set to meet the condition of preventing 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 along the second direction is located within the second projection area of ​​the conductive plate 11 on the insulating member 12 along the second direction, that is, part of the buffer space 13 can be set at the corresponding position of the conductive plate 11 and the insulating member 12, which can prevent the broken middle section 112 from moving in the buffer space 13. It should be noted that the second direction is as follows: Figure 2 As shown, the second direction may be parallel to the gravity direction, or the second reverse direction may be the width direction of the conductive plate 11, so that the first direction and the second direction are perpendicular to each other.

[0081] See also Figure 2 In some embodiments, the projection of the middle section 112 along the first direction is located at the first reinforcement portion 121 .

[0082] In this way, by increasing the thickness of the first reinforcement portion 121 , the projection of the middle section 112 along the first direction is located on the first reinforcement portion 121 , thereby increasing the structural strength of the insulating member 12 and preventing the insulating member 12 from being damaged by the impact of the driving member 141 .

[0083] Specifically, by setting the first reinforcement portion 121 so that the projection of the middle section 112 along the first direction is located on the first reinforcement portion 121, that is, the thickness of the first reinforcement portion 121 is increased, so that when the first weak portion 1121 and the second weak portion 1122 are both broken, they can be blocked by the first reinforcement portion 121, and the structural strength of the insulating member 12 can be improved. Further, when the force generated by the impact on the middle section 112 is transmitted to the insulating member 12, the insulating member 12 can withstand the force and damage to the insulating member 12 is avoided.

[0084] See also Figure 2 and Figure 3 In some embodiments, the insulating member 12 further includes 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 structure 15 is formed at a connection between the supporting portion 122 and the first reinforcing portion 121 .

[0085] In this way, by providing a support portion 122 on the insulating member 12, the support portion 122 is sleeved on the second section 113 of the conductive plate 11, so that the conductive plate 11 can be fixed, and a rounded corner is formed at the connection between the support portion 122 and the first reinforcement portion 121, which can reduce the concentration of stress on the insulating member 12, thereby enhancing the structural strength of the insulating member 12.

[0086] Specifically, the insulating member 12 further includes a support portion 122, which can be used to fix and support the conductive plate 11, and the support portion 122 includes an upper support portion 1221 and a lower support portion 1222, and the lower support portion 1222 can be connected to the first reinforcement portion 121, so that the lower support portion 1222 can transfer the force received to the first reinforcement portion 121 for sharing. The conductive plate 11 further includes a second section 113, which can be used to connect the middle 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.

[0087] By providing a rounded structure 15 at the connection between the lower support portion 1222 and the first reinforcement portion 121 , the force generated by the impact on the middle section 112 can be dispersed at the rounded structure 15 , thereby preventing the insulating member 12 from being damaged by concentrated force.

[0088] See also Figure 2 and Figure 4 In some embodiments, the insulating member 12 further includes a second reinforcement portion 123, the second reinforcement portion 123 is connected to a side surface of the first reinforcement portion 121 along the third direction, and the second reinforcement portion 123 is connected to a side surface of the support portion 122 along the third direction, and the second reinforcement portion 123 is formed with a chamfered structure 16 on one side of the second reinforcement portion 123 toward the middle section 112 in the first direction, and the third direction is perpendicular to both the first direction and the second direction.

[0089] In this way, by providing the second reinforcement portion 123 on the insulating member 12, the second reinforcement portion 123 can connect the first reinforcement portion 121 and the support portion 122, thereby further strengthening the fixation of the support portion 122 and strengthening the structural strength of the insulating member 12. Furthermore, by forming the chamfered structure 16 on the side of the second reinforcement portion 123 facing the middle section 112, the concentration of stress on the insulating member 12 can be reduced, thereby strengthening the structural strength of the insulating member 12.

[0090] Specifically, the insulating member 12 further includes a second reinforcing portion 123, and the second reinforcing portion 123 can be used to connect the first reinforcing portion 121 and the supporting portion 122. Figure 2 In the third direction shown, the second reinforcing portion 123 can connect a side surface of the first reinforcing portion 121 along the third direction and a side surface of the supporting portion 122 along the third direction. Thus, the second reinforcing portion 123 can be used to fix the first reinforcing portion 121 and the supporting portion 122, so that the structural strength of the insulating member 12 is enhanced.

[0091] By providing a chamfered structure 16 on one side of the second reinforcement portion 123 toward the middle section 112 along the first direction, the force generated by the impact on the middle section 112 can be dispersed by the chamfered structure 16 when it is transmitted to the second reinforcement portion 123, thereby preventing the insulating part 12 from being damaged by concentrated force.

[0092] Please refer again Figure 2 and Figure 3 In some embodiments, a side surface of the second segment 113 facing the middle segment 112 is a plane parallel to the first direction.

[0093] 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, it is possible to prevent the middle section 112 from hitting the second section 113 when moving after being broken, thereby avoiding damage to the second section 113.

[0094] Specifically, the shape of the second section 113 needs to be adapted to the shape of the middle section 112. By arranging the second section 113 on one side facing the middle section 112 to be parallel to the middle section 112, Figure 2 The plane of the first direction is shown, so that when the broken middle section 112 moves, the side surface of the second section 113 will not collide with the middle section 112, thereby avoiding damage to the insulating member 12.

[0095] See also Figure 2 In some embodiments, the insulating member 12 includes an isolating portion 124, which is connected to the supporting portion 122, and the isolating portion 124 is sleeved on the middle section 112 near the second section 113, and the isolating portion 124 is at least partially located between the middle section 112 and the piston 142.

[0096] In this way, by sleeve-mounting the isolating portion 124 included in the insulating member 12 on the middle section 112 , the middle section 112 and the piston 142 can be insulated, thereby preventing current from flowing from the conductive plate 11 to the driving member 141 and causing damage to the driving member 141 .

[0097] Specifically, the insulating member 12 further includes an isolating portion 124, which can be used to isolate the conductive plate 11. The isolating portion 124 is fixedly connected to the supporting portion 122, and the isolating portion 124 is sleeved on the middle section 112, so that the isolating portion 124 can fix the middle section 112, and when the piston 142 strikes, the middle section 112 can be isolated from the piston 142, thereby preventing the current on the middle section 112 from flowing to the piston 142, causing damage to the driving member 141.

[0098] See also Figures 5 to 17In some embodiments, the middle section 112 includes a first notch 1123 , and the first notch 1123 is disposed on a side of the middle section 112 close to the driving member 141 , and the first notch 1123 is disposed close to the second weak portion 1122 .

[0099] Thus, by providing the first notch 1123 at the middle section 112 near the second weak portion 1122 , the stress generated when the middle section 112 is impacted can be concentrated below the first notch 1123 , so that the second weak portion 1122 can be easily broken.

[0100] Specifically, a first notch 1123 is provided on one side of the middle section 112 facing the piston 142, and the first notch 1123 is provided close to the second weak portion 1122, and in the second direction, the first notch 1123 and the second weak portion 1122 are spaced apart. In this way, by providing a spacing distance between the first notch 1123 and the second weak portion 1122, it is possible to prevent the second weak portion 1122 from being too weak, and to prevent the second weak portion 1122 from being broken due to the shaking of the circuit breaker assembly 10 before the driving assembly 14 hits the middle section 112, thereby preventing a short circuit.

[0101] The first notch 1123 can be used to concentrate the force generated by the piston 142 hitting the middle section 112. By measuring the fracture velocity when the middle section 112 breaks, it can be determined whether the position where the piston 142 hits the middle section 112 is at the position most likely to break, that is, the position where the axis of the piston 142 is between the first notch 1123 and the second weak portion 1122. In this way, by setting the axis of the piston 142 between the first notch 1123 and the second weak portion 1122, the impact position of the piston 142 can be determined, so that the piston 142 accurately hits the position of the middle section 112 that is easy to break. Among them, the fracture velocity is the average velocity of the position of the middle section 112 that is close to the fracture.

[0102] It should be noted that the fracture speed can be determined according to the initial impact speed of the piston 142, the vertical installation deviation of the first notch 1123, the left and right installation deviation of the conductive plate 11, and the thickness of the conductive plate 11. Among them, the initial impact speed of the piston 142 is the speed corresponding to the kinetic energy of the piston 142 obtained by the explosion wave acting on the piston 142 after the explosion process in the driving member 141 is completed; the vertical installation deviation of the first notch 1123 is the distance between the lower side of the first notch 1123 and the extension line of the projection point of the axis of the piston 142 on the thickness side of the middle section 112 along the parallel direction of the first notch 1123, that is, Figure 7 The installation deviation of the conductive plate 11 is the distance between the vertical midline of the thickness side section of the middle section 112 and the vertical perpendicular to the axis of the piston 142, that is, Fig. 9d2 shown.

[0103] The fracture velocity is respectively related to the initial impact velocity of the piston 142, the vertical installation deviation of the first notch 1123, the horizontal installation deviation of the conductive plate 11, and the thickness of the conductive plate 11, and can be expressed as follows:

[0104]

[0105] Among them, V represents the fracture velocity; Vi is the initial impact velocity 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 middle section 112; a, b, c, a1, b1, c1, a2, b2, c2, a3, b3, c3 are represented as constants.

[0106] The initial impact velocity of the piston 142 needs to be restricted to prevent the piston 142 from hitting the middle section 112 with too much force and damaging the insulating member 12 .

[0107] For example, the initial velocity constraint formula of the impact head can be expressed as:

[0108]

[0109] Among them, P(t) is the explosion pressure curve corresponding to the gunpowder in the brake shown, s is the area of ​​the piston 142 affected by the explosion wave, and m is the mass of the piston 142.

[0110] For example, when the shape of the middle section 112 is half-moon-shaped, the middle 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 velocity of the piston 142 and the thickness of the middle section 112 are constant, Figure 8 and Fig.11 As shown, the position where the middle section 112 is hit is the upper and lower installation deviation d1 of the first notch 1123, which is -1.8mm to -0.7mm, and the position where the middle section 112 is hit is the left and right installation deviation d2 of the first notch 1123, which is -1.8mm to +1.8mm. Outside this range, the deviation of the piston 142 on the thickness side of the middle section 112 will cause the fragile structure to be distorted and deformed, resulting in the middle section 112 being unable to be broken. Within the 95% confidence interval determined by 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), c3 (82.56, 86.56).

[0111] The shape of the intermediate section 112 can affect the impact location of the piston 142 .

[0112] For example, when the shape of the middle section 112 is rectangular, the middle 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 velocity of the piston 142 and the thickness of the middle section 112 are constant, Fig.14 and Fig.17 As shown, the position where the middle section 112 is hit is the installation deviation d+3.5mm to +7.2mm above and below the first notch 1123, and the position where the middle section 112 is hit is the installation deviation of -0.6mm to +0.6mm on the left and right sides of the first notch 1123. Outside this range, the deviation of the piston 142 on the thickness side of the middle section 112 will cause the fragile structure to be distorted and deformed, resulting in the middle section 112 being unable to be broken. Within the 95% confidence interval determined by the formula 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), c3 (156.2, 164.2).

[0113] See also Figure 2 and Figure 3In some embodiments, the middle section 112 includes a second notch 1124 , and the second notch 1124 is disposed on a side of the middle section 112 close to the driving member 141 , and the second notch 1124 is disposed close to the first weak portion 1121 .

[0114] In this way, by setting the second notch 1124 on the side of the middle section 112 close to the driving member 141 and close to the first weak portion 1121, the stress of the piston 142 hitting the middle section 112 can be concentrated below the second notch 1124 instead of the first weak portion 1121, thereby preventing the first weak portion 1121 from breaking during the impact.

[0115] Specifically, the middle section 112 further includes a second notch 1124, which can be used to concentrate the force generated by the piston 142 hitting the middle section 112. Figure 1 As shown, the second notch 1124 is disposed on a side of the middle section 112 close to the driving member 141, and the second notch 1124 is disposed close to the first weak portion 1121. That is, the second notch 1124 and the first weak portion 1121 are spaced apart, and the spacing distance between the second notch 1124 and the first weak portion 1121 is smaller than the spacing distance between the first notch 1123 and the second weak portion 1122.

[0116] In this way, by setting a spacing distance between the second notch 1124 and the first weak portion 1121, it is possible to prevent the first weak portion 1121 from being too weak, and to prevent the second weak portion 1122 from breaking due to the shaking of the circuit breaker assembly 10 before the driving assembly 14 hits the middle section 112, thereby preventing a short circuit. And by setting the spacing distance between the second notch 1124 and the first weak portion 1121 to be smaller than the spacing distance between the first notch 1123 and the second weak portion 1122, when impacted, the stress concentrated on the second weak portion 1122 is greater than the stress concentrated on the first weak portion 1121, so that the second weak portion 1122 is easier to break than the first weak portion 1121.

[0117] See also Figure 2 In some embodiments, the conductive plate 11 includes two plates arranged side by side, the insulating member 12 connects the two conductive plates 11, the piston 142 includes two pistons, and the driving member 141 drives the two pistons 142 to impact the two conductive plates 11 in opposite directions respectively.

[0118] In this way, by arranging two conductive plates 11 side by side, the circuit breaker assembly 10 can connect two circuits at the same time, and by arranging two pistons 142, the driving member 141 can simultaneously drive the two pistons 142 to impact the two conductive plates 11, thereby improving the efficiency of cutting off the circuit when a short circuit occurs.

[0119] Specifically, the number of the conductive plates 11 may be two, and the two conductive plates 11 are arranged side by side on the insulating member 12. Thus, by arranging two pistons 142 on the driving member 141, and enabling the driving member 141 to drive the two pistons 142 to impact the two conductive plates 11 in opposite directions in the first direction, the middle sections 112 of the two conductive plates 11 can be broken at the same time.

[0120] Please refer again Figure 2 In some embodiments, the circuit breaker assembly 10 includes a fuse 17 disposed on the insulating member 12 , and the fuse 17 is connected in parallel with the intermediate section 112 .

[0121] Thus, by providing the fuse 17 on the circuit breaker assembly 10 and connecting the fuse 17 in parallel with the middle section 112 , when the conductive plate 11 is cut off, current can flow through the fuse 17 and the generated arc can be extinguished by the fuse 17 .

[0122] Specifically, the circuit breaker assembly 10 also includes a fuse 17, which can be used to eliminate the arc generated by the circuit. The fuse 17 and the middle section 112 can be in a parallel state in the circuit. When the circuit is working normally, the resistance of the conductive plate 11 is much smaller than the resistance of the fuse 17, and most of the current will flow through the conductive plate 11. When the current is abnormal and the circuit needs to be disconnected, the driving member 141 hits the middle section 112, so that the current is transferred to the fuse 17. The fuse 17 melts under a large current, which can eliminate the arc generated by the conductive plate 11 being cut off, thereby improving the safety of the circuit breaker assembly 10.

[0123] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0124] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are optional and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A circuit breaker assembly, characterized in that: include: A conductive plate, the conductive plate comprising a first section, a middle section and a second section connected in sequence, the first section being suitable for connecting a motor, the second section being suitable for connecting a motor controller, a first weak portion being formed at a position of the middle section close to the first section, a second weak portion being formed at a position of the middle section close to the second section, the middle section comprising a first notch and a second notch, and a spacing distance between the second notch and the first weak portion being smaller than a spacing distance between the first notch and the second weak portion; an insulating member, the conductive plate is mounted on the insulating member, the insulating member comprises a first reinforcing portion, the first reinforcing portion is spaced apart from the middle section in a first direction, and a buffer space is provided between the first reinforcing portion and the middle section; A driving assembly, wherein the driving assembly includes a driving member and a piston, wherein the driving member is configured to drive the piston to impact the middle section in the first direction so as to break one of the first weak portion and the second weak portion and cause the middle section to flip or move toward one side of the first reinforcement portion.

2. The circuit breaker assembly according to claim 1, characterized in that A first projection area of ​​the buffer space on the insulating member along the second direction is located within a second projection area of ​​the conductive plate on the insulating member along the second direction, and the first direction is perpendicular to the second direction.

3. The circuit breaker assembly according to claim 1, characterized in that The projection of the middle section along the first direction is located on the first reinforcement portion.

4. The circuit breaker assembly according to claim 2, characterized in that The insulating member further includes a supporting portion, the supporting portion is connected to the first reinforcing portion, and the supporting portion is sleeved on the second section.

5. The circuit breaker assembly according to claim 4, characterized in that The insulating member further includes a second reinforcing portion, the second reinforcing portion connecting a side surface of the first reinforcing portion along a third direction, and the second reinforcing portion connecting a side surface of the supporting portion along the third direction, and the third direction is perpendicular to both the first direction and the second direction.

6. The circuit breaker assembly according to claim 4, characterized in that The insulating member comprises an isolating portion, the isolating portion is connected to the supporting portion, the isolating portion is sleeved on the middle section near the second section, and the isolating portion is at least partially located between the middle section and the piston.

7. The circuit breaker assembly according to claim 2, characterized in that The first notch is arranged on a side of the middle section close to the driving member, and the first notch is arranged close to the second weak portion.

8. The circuit breaker assembly according to claim 7, characterized in that In the second direction, the first notch and the second weak portion are spaced apart.

9. The circuit breaker assembly according to claim 7, characterized in that In the second direction, the axis of the piston is located between the first notch and the second weak portion.

10. The circuit breaker assembly according to claim 7, characterized in that When the shape of the middle section is a half-moon 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.

11. The circuit breaker assembly according to claim 10, characterized in that In the third direction, the distance between the axis of the piston and the center line of the thickness of the middle section is less than or equal to 1.8 mm, and the third direction is perpendicular to both the first direction and the second direction.

12. The circuit breaker assembly according to claim 7, characterized in that When the middle section is rectangular in shape, in the second direction, the distance between the axis of the piston and the first notch is greater than or equal to 3.5 mm and less than or equal to 7.2 mm.

13. The circuit breaker assembly according to claim 10, characterized in that In the third direction, the distance between the axis of the piston and the center line of the thickness of the middle section is less than or equal to 0.6 mm, and the third direction is perpendicular to both the first direction and the second direction.

14. The circuit breaker assembly according to claim 1, characterized in that The second notch is arranged on a side of the middle section close to the driving member, and the second notch is arranged close to the first weak portion.

15. The circuit breaker assembly according to claim 2, characterized in that The conductive plates include two disposed side by side, the insulating member connects the two conductive plates, the pistons include two, and the driving member drives the two pistons to impact the two conductive plates respectively in opposite directions.

16. The circuit breaker assembly according to claim 15, characterized in that In the second direction, the first section and the second section are at least partially disposed on the insulating member.

17. The circuit breaker assembly according to claim 1, characterized in that The circuit breaker assembly includes a fuse disposed on the insulating member, and the fuse is connected in parallel with the middle section.

18. A motor controller assembly, characterized in that: It comprises the circuit breaker assembly and the motor controller according to any one of claims 1 to 17, one end of the conductive plate is connected to the motor controller, and the other end of the conductive plate is suitable for connecting to the motor.

19. A vehicle, characterized in that: It comprises the circuit breaker assembly according to any one of claims 1 to 17 or the motor controller assembly according to claim 18.

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