Safety device, motor controller, motor assembly and vehicle

Abstract

The invention discloses a safety device, a motor controller, a motor assembly and a vehicle, the safety device comprises a first conducting strip, the first conducting strip is provided with a first through hole penetrating through the first conducting strip in the thickness direction of the first conducting strip, and the first conducting strip forms a first weak part at the first through hole, the first weak part is configured to be broken when being impacted; a circuit board; and the Hall chip is arranged on the circuit board, a part of the Hall chip is arranged opposite to at least a part of the first through hole, or a part of the Hall chip is at least partially inserted into the first through hole. According to the safety device, the first through hole can serve as a broken hole of the first conducting strip to facilitate disconnection of the first conducting strip when current is abnormal, and the first through hole can serve as a sampling hole of the Hall chip to achieve dual purposes of the first through hole, so that the number of the first through holes is reduced, the first conducting strip is easy to machine, and the cost is reduced. The machining and production efficiency of the safety device is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a safety device, a motor controller, a motor component and a vehicle. Background Art

[0002] When the insulated gate bipolar transistor is turned off, a large current continues to flow through the motor controller due to the reverse drag of the motor. In order to protect the motor controller from being burned by the reverse drag current, it is necessary to set multiple break holes and multiple sampling holes on some three-phase copper bars. The break holes are used to disconnect the three-phase copper bars after being hit, and the sampling holes are used for the detection of the Hall chip. However, setting too many break holes and sampling holes on the copper bars makes the copper bar processing complicated, the processing and production efficiency is low, and the cost is high. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a safety device, which reduces the arrangement of the first through hole, thereby simplifying the processing of the first conductive sheet, improving the processing and production efficiency of the safety device, and reducing the production cost.

[0004] The present invention also provides a motor controller, comprising the above-mentioned safety device.

[0005] The present invention also provides a motor assembly, comprising the above-mentioned motor controller.

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

[0007] According to an embodiment of the present invention, the safety device includes: a first conductive sheet, the first conductive sheet has a first through hole penetrating the first conductive sheet in the thickness direction of the first conductive sheet, the first conductive sheet is formed as a first weak portion at the first through hole, and the first weak portion is configured to be broken when impacted; a circuit board; a Hall chip, the Hall chip is arranged on the circuit board, part of the Hall chip is arranged opposite to at least part of the first through hole, or part of the Hall chip is at least partially inserted into the first through hole.

[0008] According to the safety device of the embodiment of the present invention, a first through hole is arranged on the first conductive sheet and penetrates the first conductive sheet in the thickness direction of the first conductive sheet, the first conductive sheet is formed as a first weak portion at the first through hole, a Hall chip is arranged on the circuit board, part of the Hall chip is arranged opposite to at least part of the first through hole, or part of the Hall chip is inserted into the first through hole, so that the first through hole can be a breaking hole of the first conductive sheet to facilitate the disconnection of the first conductive sheet when the current is abnormal, and the first through hole can also be used as a sampling hole of the Hall chip, so that the first through hole can be used for two purposes, so that the arrangement of the first through hole can be reduced, so that the processing of the first conductive sheet is simple, the processing and production efficiency of the safety device are improved, and the production cost is reduced.

[0009] In some embodiments of the present invention, the safety device also includes: a detonating device, which is arranged on the circuit board, and has a first striker, at least a portion of the first striker is an insulating member, the first striker is arranged corresponding to the first conductive sheet, the first striker is opposite to the first weak portion of the first conductive sheet, and the insulating portion of the first striker is used to strike the first weak portion of the first conductive sheet.

[0010] In some embodiments of the present invention, the first impact pin includes a first impact column, and the first impact column and the first weak portion are arranged opposite to each other in the width direction of the first conductive sheet; or, the first impact pin includes a first impact column and a first cutting plate, and the first cutting plate is arranged on a side of the first impact column facing the first conductive sheet, the first cutting plate and the first through hole are arranged opposite to each other in the width direction of the first conductive sheet, and the first cutting plate is perpendicular to the first conductive sheet.

[0011] In some embodiments of the present invention, the safety device also includes a current sensor, which is arranged on the circuit board and connected to the circuit board, and is used to detect the current signal on the Hall chip. The detonation device is configured to detonate and pop out the first firing pin to hit the weak portion corresponding to the first conductive sheet when the current sensor detects that the current signal of the Hall chip is abnormal.

[0012] In some embodiments of the present invention, the safety device also includes: a second conductive sheet, the first conductive sheet and the second conductive sheet are spaced apart, the second conductive sheet has a second through hole penetrating the second conductive sheet in the thickness direction of the second conductive sheet, the second conductive sheet is formed as a second weak portion at the second through hole, the second weak portion is configured to break when impacted, part of the Hall chip is arranged opposite to at least part of the second through hole, or part of the Hall chip is at least partially inserted into the second through hole.

[0013] In some embodiments of the present invention, the detonating device is located between the first conductive sheet and the second conductive sheet, and the detonating device further has a second striker, the second striker is opposite to the second weak portion of the second conductive sheet, at least a portion of the second striker is an insulating member, and the insulating portion of the second striker is used to strike the second weak portion of the second conductive sheet, and in the arrangement direction of the first conductive sheet and the second conductive sheet, the first striker and the second striker are respectively arranged on opposite sides of the detonating device.

[0014] In some embodiments of the present invention, the safety device also includes a third conductive sheet, which is located between the first conductive sheet and the second conductive sheet, and the third conductive sheet has a third through hole that penetrates the third conductive sheet in the thickness direction of the third conductive sheet, and some of the Hall chips are arranged opposite to at least some of the third through holes, or some of the Hall chips are at least partially inserted into the third through holes.

[0015] In some embodiments of the present invention, the first conductive sheet, the second conductive sheet and the third conductive sheet are located on the same side in the thickness direction of the circuit board, at least a portion of the first conductive sheet and at least a portion of the second conductive sheet are stacked with the circuit board, the detonation device is located between the third conductive sheet and the circuit board, the first conductive sheet and the second conductive sheet are arranged in parallel in the thickness direction of the circuit board, and the first conductive sheet and the third conductive sheet are arranged in an offset manner in the thickness direction of the circuit board.

[0016] In some embodiments of the present invention, the outer contour of the first through hole is U-shaped or V-shaped; and / or, the outer contour of the second through hole is U-shaped or V-shaped; and / or, the outer contour of the third through hole is U-shaped or V-shaped.

[0017] In some embodiments of the present invention, one end of the first conductive sheet, the second conductive sheet and the third conductive sheet bends and extends away from the circuit board along the thickness direction of the circuit board, and the first conductive sheet and the second conductive sheet are arranged closer to the circuit board than the third conductive sheet.

[0018] In some embodiments of the present invention, at least one of the first conductive sheet and the second conductive sheet includes a first sub-conductive sheet, a second sub-conductive sheet and a third sub-conductive sheet connected in sequence, the first sub-conductive sheet, the second sub-conductive sheet and the third sub-conductive sheet are separate processed parts, the first through hole is provided on the second sub-conductive sheet of the first conductive sheet, and / or the second through hole is provided on the second sub-conductive sheet of the second conductive sheet.

[0019] In some embodiments of the present invention, the thickness of the first sub-conductive sheet and the third sub-conductive sheet is greater than the thickness of the second sub-conductive sheet.

[0020] In some embodiments of the present invention, there is one first through hole, which is open toward one side in the width direction of the first conductive sheet; or, there are two first through holes, which are respectively located at two ends of the width direction of the first conductive sheet and are arranged opposite to each other in the width direction of the first conductive sheet, and the sides of the two first through holes facing away from each other are open; or, there are four first through holes, which are divided into two groups, each group includes two first through holes arranged opposite to each other in the width direction of the first conductive sheet, the two first through holes in each group are respectively located at two ends of the width direction of the first conductive sheet and the sides of the two first through holes facing away from each other are open, the two groups of first through holes are spaced apart in the length direction of the first conductive sheet, and the first conductive sheet between the two groups of first through holes is configured as the first weak portion.

[0021] In some embodiments of the present invention, the Hall chip is a Hall chip without a magnetic core, or the Hall chip is a Hall chip with a magnetic core.

[0022] A motor controller according to an embodiment of the present invention includes the above-mentioned safety device.

[0023] According to the motor controller of the embodiment of the present invention, by setting the above-mentioned safety device, a first through hole is set on the first conductive sheet and penetrates the first conductive sheet in the thickness direction of the first conductive sheet, the first conductive sheet is formed as a first weak portion at the first through hole, and a Hall chip is set on the circuit board, part of the Hall chip is arranged opposite to at least part of the first through hole, or part of the Hall chip is inserted into the first through hole, so that the first through hole can be a breaking hole of the first conductive sheet, which is convenient for disconnecting the first conductive sheet when the current is abnormal, and the first through hole can also be used as a sampling hole of the Hall chip, so that the first through hole can be used for two purposes, so that the setting of the first through hole can be reduced, so that the processing of the first conductive sheet is simple, the processing and production efficiency of the safety device are improved, and the production cost is reduced.

[0024] In some embodiments of the present invention, the fuse device also includes a second conductive plate, a third conductive plate and a power component, the first conductive plate, the second conductive plate and the third conductive plate are constructed as three-phase conductive parts, one end of the first conductive plate, the second conductive plate and the third conductive plate is connected to the power component, and the other end is used to connect to the motor.

[0025] In some embodiments of the present invention, the circuit board is configured as a control board of the motor controller.

[0026] A motor assembly according to an embodiment of the present invention includes the above-mentioned motor controller.

[0027] According to the motor assembly of the embodiment of the present invention, by setting the above-mentioned motor controller, a first through hole is set on the first conductive sheet and penetrates the first conductive sheet in the thickness direction of the first conductive sheet, the first conductive sheet is formed as a first weak portion at the first through hole, and a Hall chip is set on the circuit board, part of the Hall chip is arranged opposite to at least part of the first through hole, or part of the Hall chip is inserted into the first through hole, so that the first through hole can be a breaking hole of the first conductive sheet, which is convenient for disconnecting the first conductive sheet when the current is abnormal, and the first through hole can also be used as a sampling hole of the Hall chip, so that the first through hole can be used for two purposes, thereby reducing the setting of the first through hole, so that the processing of the first conductive sheet is simple, the processing and production efficiency of the safety device are improved, and the production cost is reduced.

[0028] A vehicle according to an embodiment of the present invention includes the above-mentioned motor assembly.

[0029] According to the vehicle of the embodiment of the present invention, by setting the above-mentioned motor assembly, a first through hole is set on the first conductive sheet and penetrates the first conductive sheet in the thickness direction of the first conductive sheet, the first conductive sheet is formed as a first weak portion at the first through hole, and a Hall chip is set on the circuit board, part of the Hall chip is arranged opposite to at least part of the first through hole, or part of the Hall chip is inserted into the first through hole, so that the first through hole can be a breaking hole of the first conductive sheet, which is convenient for disconnecting the first conductive sheet when the current is abnormal, and the first through hole can also be used as a sampling hole of the Hall chip, so that the first through hole can be used for two purposes, thereby reducing the setting of the first through hole, so that the processing of the first conductive sheet is simple, the processing and production efficiency of the safety device are improved, and the production cost is reduced.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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:

[0032] Figure 1 is a perspective view of a safety device according to an embodiment of the present invention;

[0033] Figure 2 is a top view of a safety device according to a first embodiment of the present invention, wherein the first striker includes a first striker column, and the number of first through holes is two;

[0034] Figure 3is a top view of a safety device according to a second embodiment of the present invention, wherein the first striker includes a first striker column, the number of the first through holes is four, and the outer contour of the first through holes is U-shaped;

[0035] Figure 4 is a top view of a safety device according to a third embodiment of the present invention, wherein the first striker includes a first striker column, the number of first through holes is four, the outer contours of some of the first through holes are U-shaped, and the outer contours of some of the first through holes are V-shaped;

[0036] Figure 5 is a top view of the safety device after being activated according to the second or third embodiment of the present invention;

[0037] Figure 6 is a top view of a safety device according to a fourth embodiment of the present invention, wherein the first striker includes a first striker column and a first cutting plate;

[0038] Figure 7 is a top view of a safety device according to a fifth embodiment of the present invention, wherein the first conductive sheet and the second conductive sheet each include a first sub-conductive sheet, a second sub-conductive sheet and a third sub-conductive sheet connected in sequence;

[0039] Figure 8 is a three-dimensional diagram of a safety device according to a fifth embodiment of the present invention;

[0040] Fig. 9 yes Figure 7 Enlarged view of point A in the middle.

[0041] Reference numerals:

[0042] 10. Safety device;

[0043] 11, first conductive sheet; 111, first through hole; 112, first weak portion; 12, second conductive sheet; 121, second through hole; 122, second weak portion; 13, first sub-conductive sheet; 14, second sub-conductive sheet; 15, third sub-conductive sheet; 16, third conductive sheet; 161, third through hole;

[0044] 2. Circuit board;

[0045] 3. Hall chip;

[0046] 4. Detonation device; 41. First striker; 411. First striker column; 412. First cutting plate; 42. Second striker; 421. Second striker column; 422. Second cutting plate;

[0047] 5. Current sensor. DETAILED DESCRIPTION

[0048] 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.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Reference below Figure 1-Figure 9 A safety device 10 according to an embodiment of the present invention is described.

[0052] like Figure 1-Figure 9 As shown, the safety device 10 according to the embodiment of the present invention includes: a first conductive sheet 11 , a circuit board 2 and a Hall chip 3 .

[0053] Specifically, refer to Figure 2-Figure 7The first conductive sheet 11 has a first through hole 111 that penetrates the first conductive sheet 11 in the thickness direction of the first conductive sheet 11. The first conductive sheet 11 is formed as a first weak portion 112 at the first through hole 111. The first weak portion 112 is configured to be disconnected when impacted. It should be noted that the first conductive sheet 11 is used to connect the motor and the motor controller. When the first weak portion 112 is not disconnected, the first weak portion 112 can be used to carry current, so that the first conductive sheet 11 is normally energized, ensuring that the circuit between the motor controller and the motor is connected, so that the motor can work normally. When the current is abnormal, the first weak portion 112 will be impacted and disconnected, so that the first conductive sheet 11 is disconnected, thereby cutting off the circuit between the motor and the motor controller, thereby preventing the motor and the motor controller from being damaged by abnormal current, and improving safety.

[0054] Furthermore, if Figure 8 and Fig. 9 As shown, the Hall chip 3 is arranged on the circuit board 2, part of the Hall chip 3 is arranged opposite to at least part of the first through hole 111, or part of the Hall chip 3 is inserted into the first through hole 111, wherein, for example, Figure 1-Figure 9 In the example shown, part of the Hall chip 3 is disposed opposite to at least part of the first through hole 111 in the thickness direction of the circuit board 2 . However, the present invention is not limited thereto, and part of the Hall chip 3 may also be inserted into the first through hole 111 .

[0055] It is understandable that the Hall chip 3 can determine the magnitude of the current passing through the first conductive sheet 11 by the magnitude of the magnetic field, thereby determining whether the current on the first conductive sheet 11 is abnormal. The first through hole 111 is provided so that the magnetic flux lines generated on the first conductive sheet 11 pass through, thereby making the first through hole 111 a sampling hole for the Hall chip 3, thereby facilitating the Hall chip 3 to detect the current on the first conductive sheet 11.

[0056] The first conductive sheet 11 is formed as a first weak portion 112 at the first through hole 111, that is, the first through hole 111 can be a broken hole of the first conductive sheet 11, so as to facilitate the disconnection of the first conductive sheet 11 when the current is abnormal, and at the same time, the first through hole 111 can be used as a sampling hole of the Hall chip 3, so that the first through hole 111 can be used for two purposes. Compared with separately setting a broken hole and a sampling hole on the conductive sheet, the setting of the first through hole 111 can be reduced, so that the processing of the first conductive sheet 11 is simple, the processing and production efficiency of the safety device 10 is improved, and the production cost is reduced.

[0057] According to the safety device 10 of the embodiment of the present invention, a first through hole 111 is arranged on the first conductive sheet 11 and penetrates the first conductive sheet 11 in the thickness direction of the first conductive sheet 11, the first conductive sheet 11 is formed as a first weak portion 112 at the first through hole 111, and a Hall chip 3 is arranged on the circuit board 2, part of the Hall chip 3 is arranged opposite to at least part of the first through hole 111, or part of the Hall chip 3 is inserted into the first through hole 111, so that the first through hole 111 can be a disconnection hole of the first conductive sheet 11, which is convenient for disconnecting the first conductive sheet 11 when the current is abnormal, and the first through hole 111 can also be used as a sampling hole of the Hall chip 3, so that the first through hole 111 can be used for two purposes, so that the arrangement of the first through hole 111 can be reduced, so that the processing of the first conductive sheet 11 is simple, the processing and production efficiency of the safety device 10 is improved, and the production cost is reduced.

[0058] In some embodiments of the present invention, Figure 1-Figure 8 As shown, the safety device 10 also includes: a detonating device 4, which is arranged on the circuit board 2, and has a first striker 41, at least a part of the first striker 41 is an insulating member, the first striker 41 is arranged corresponding to the first conductive sheet 11, the first striker 41 is opposite to the first weak portion 112 of the first conductive sheet 11, and the insulating portion of the first striker 41 is used to strike the first weak portion 112 of the first conductive sheet 11.

[0059] It should be noted that the first striker 41 can be an insulating part such as plastic as a whole, or the first striker 41 can be partially an insulating part, for example, the outer peripheral wall of the first striker 41 can be an insulating part, so as to avoid the circuit connection with the first conductive sheet 11, so that when the first striker 41 extends into the broken part of the first conductive sheet 11, it can ensure that the circuit is disconnected after the first conductive sheet 11 is broken, thereby further ensuring that when the current is abnormal, the motor and the motor controller cannot form a loop, thereby improving safety.

[0060] It can be understood that by the first striker 41 being opposite to the first weak portion 112 of the first conductive sheet 11, the first striker 41 can more easily break the first weak portion 112 of the first conductive sheet 11 when the current is abnormal, thereby further ensuring that the motor and the motor controller cannot form a loop when the current is abnormal, thereby improving safety.

[0061] In addition, when the detonation device 4 is detonated, an inert gas is sprayed toward the first weak portion 112 of the first conductive sheet 11, thereby eliminating the arc generated after the first weak portion 112 of the first conductive sheet 11 is broken, thereby improving safety. At the same time, the first striker 41 can extend into the broken portion of the first weak portion 112 of the first conductive sheet 11. Since at least part of the first striker 41 is an insulating member, the arc generated after the first weak portion 112 of the first conductive sheet 11 is broken can be further eliminated, thereby improving safety.

[0062] When the current is normal, the first striker 41 is retracted in the detonating device 4. When the Hall element detects an abnormal current, the detonating device 4 is detonated, causing the first striker 41 to pop out. The first striker 41 hits the first weak portion 112 of the first conductive sheet 11, thereby disconnecting the first weak portion 112 of the first conductive sheet 11, and at the same time, inert gas is sprayed toward the first weak portion 112 of the first conductive sheet 11, thereby eliminating the arc generated after the first weak portion 112 of the first conductive sheet 11 is broken, thereby cutting off the circuit between the motor and the motor controller, thereby improving safety.

[0063] In some embodiments of the present invention, Figure 2-Figure 5 and Figure 7 As shown, the first striker 41 includes a first striker column 411, and the first striker column 411 and the corresponding first weak portion 112 of the first conductive sheet 11 are arranged opposite to each other in the width direction of the first conductive sheet 11; it should be noted that at least part of the first striker column 411 is an insulating member, and the insulating part of the first striker column 411 is used to strike the first weak portion 112 of the first conductive sheet 11. It can be understood that the structure of the striker column is solid and reliable, thereby ensuring that the first striker column 411 is not easily broken when striking the first weak portion 112 of the first conductive sheet 11, thereby improving the reliability of the first striker 41 striking the first weak portion 112 of the first conductive sheet 11.

[0064] In some embodiments of the present invention, Figure 6 As shown, the first striker 41 includes a first strike column 411 and a first cut plate 412. The first cut plate 412 is disposed on the side of the first strike column 411 facing the first conductive sheet 11. The first cut plate 412 and the first through hole 111 are disposed opposite to each other in the width direction of the first conductive sheet 11. The first cut plate 412 is perpendicular to the first conductive sheet 11. It should be noted that at least part of the first cut plate 412 is an insulating member, and the insulating part of the first cut plate 412 is used to strike the first weak portion 112 of the first conductive sheet 11. The first cut plate 412 is perpendicular to the first conductive sheet 11, which means that the plane where the end face of the first conductive sheet 11 in the thickness direction is located is perpendicular to the plane where the end face of the first cut plate 412 in the thickness direction is located.

[0065] It can be understood that the setting of the first impact column 411 ensures that the first impact pin 41 has sufficient structural strength when it impacts the first weak portion 112 of the first conductive sheet 11, thereby preventing the first impact pin 41 from breaking, and the first cutting plate 412 is sharper than the first impact column 411. The setting of the first cutting plate 412 makes it easier for the first impact pin 41 to break the first weak portion 112 of the first conductive sheet 11, thereby further ensuring that when the current is abnormal, the motor and the motor controller cannot form a loop, thereby improving safety.

[0066] In addition, when the first weak portion 112 of the first conductive sheet 11 is cut off, since the first cutting plate 412 is thinner, it is convenient for the first cutting plate 412 to extend into the disconnection point of the first weak portion 112 of the first conductive sheet 11, thereby further eliminating the arc generated after the first weak portion 112 of the first conductive sheet 11 is broken, thereby improving safety.

[0067] In some embodiments of the present invention, Figure 2-Figure 7 As shown, the safety device 10 also includes a current sensor 5, which is arranged on the circuit board 2 and connected to the circuit board 2, and is used to detect the current signal on the Hall chip 3. The detonating device 4 is configured to detonate and eject the first striker 41 to hit the weak part of the corresponding first conductive sheet 11 when the current sensor 5 detects that the current signal of the Hall chip 3 is abnormal.

[0068] It can be understood that the current sensor 5 is connected to the circuit board 2, and the Hall chip 3 is connected to the circuit board 2, so that the current signal on the Hall chip 3 can be transmitted to the current sensor 5, and the current sensor 5 processes the current signal on the Hall chip 3 to determine whether the current is abnormal. At the same time, the detonating device 4 is connected to the circuit board 2. When the current sensor 5 determines that the current is abnormal, the current sensor 5 can control the detonating device 4 to detonate, so that the first striker 41 pops out and hits the first weak portion 112 of the corresponding first conductive sheet 11, thereby breaking the first weak portion 112 of the first conductive sheet 11, thereby further ensuring that when the current is abnormal, the motor and the motor controller cannot form a loop, thereby improving safety.

[0069] In some embodiments of the present invention, Figure 2-Figure 7 As shown, the safety device 10 also includes: a second conductive sheet 12, the first conductive sheet 11 and the second conductive sheet 12 are spaced apart, the second conductive sheet 12 has a second through hole 121 penetrating the second conductive sheet 12 in the thickness direction of the second conductive sheet 12, the second conductive sheet 12 is formed as a second weak portion 122 at the second through hole 121, and the second weak portion 122 is configured to break when impacted, part of the Hall chip 3 is arranged opposite to at least part of the second through hole 121, or part of the Hall chip 3 is at least partially inserted into the second through hole 121.

[0070] It should be noted that the first conductive sheet 11 and the second conductive sheet 12 are spaced apart in the width direction of the first conductive sheet 11. The second conductive sheet 12 is also used to connect the motor and the motor controller. When the second weak portion 122 is not disconnected, the second weak portion 122 can be used to carry current, so that the second conductive sheet 12 is normally energized, ensuring that the circuit between the motor controller and the motor is connected, so that the motor can work normally. When the current is abnormal, the second weak portion 122 will be hit and disconnected, so that the second conductive sheet 12 is disconnected, thereby cutting off the circuit between the motor and the motor controller, thereby preventing the motor and the motor controller from being damaged by abnormal current, thereby improving safety. Therefore, when one of the first conductive sheet 11 and the second conductive sheet 12 is disconnected, the circuit between the motor and the motor controller can be cut off, thereby preventing the motor and the motor controller from being damaged by abnormal current, thereby further improving safety.

[0071] Furthermore, if Figure 8 and Fig. 9 As shown, part of the Hall chip 3 is arranged opposite to at least part of the second through hole 121, or part of the Hall chip 3 is inserted into the second through hole 121, wherein, for example, Figure 1-Figure 9 In the example shown, part of the Hall chip 3 and at least part of the second through hole 121 are arranged opposite to each other in the thickness direction of the circuit board 2 . However, the present invention is not limited thereto, and part of the Hall chip 3 may also be inserted into the second through hole 121 .

[0072] It is understandable that the Hall chip 3 can determine the magnitude of the current passing through the second conductive sheet 12 by the magnitude of the magnetic field, thereby determining whether the current on the second conductive sheet 12 is abnormal. The second through hole 121 is provided so that the magnetic flux lines generated on the second conductive sheet 12 pass through, thereby making the second through hole 121 a sampling hole for the Hall chip 3, thereby facilitating the Hall chip 3 to detect the current on the second conductive sheet 12.

[0073] The second conductive sheet 12 is formed as a second weak portion 122 at the second through hole 121, that is, the second through hole 121 can be a breaking hole of the second conductive sheet 12, so as to facilitate the disconnection of the second conductive sheet 12 when the current is abnormal, and the second through hole 121 can also be used as a sampling hole of the Hall chip 3, so that the second through hole 121 can be used for two purposes. Compared with separately setting the breaking hole and the sampling hole on the conductive sheet, the setting of the second through hole 121 can be reduced, so that the processing of the second conductive sheet 12 is simple, the processing and production efficiency of the safety device 10 is improved, and the production cost is reduced.

[0074] In some embodiments of the present invention, Figure 1-Figure 8As shown, the detonating device 4 is located between the first conductive sheet 11 and the second conductive sheet 12. The detonating device 4 also has a second striker 42. The second striker 42 is opposite to the second weak portion 122 of the second conductive sheet 12. At least part of the second striker 42 is an insulating member. The insulating portion of the second striker 42 is used to strike the second weak portion 122 of the second conductive sheet 12.

[0075] It should be noted that the second striker 42 can be an insulating part such as plastic as a whole, or the second striker 42 can be partially an insulating part, for example, the outer peripheral wall of the second striker 42 can be an insulating part, so as to avoid the circuit connection between the second conductive sheet 12, so that when the second striker 42 extends into the broken part of the second conductive sheet 12, it can ensure that the circuit is disconnected after the second conductive sheet 12 is broken, thereby further ensuring that when the current is abnormal, the motor and the motor controller cannot form a loop, thereby improving safety.

[0076] It can be understood that by the second striker 42 being opposite to the second weak portion 122 of the second conductive sheet 12, the second striker 42 can more easily break the second weak portion 122 of the second conductive sheet 12 when the current is abnormal, thereby further ensuring that the motor and the motor controller cannot form a loop when the current is abnormal, thereby improving safety.

[0077] In addition, when the detonation device 4 is detonated, an inert gas is sprayed toward the second weak portion 122 of the second conductive sheet 12, thereby eliminating the arc generated after the second weak portion 122 of the second conductive sheet 12 is broken, thereby improving safety. At the same time, the second striker 42 can extend into the broken portion of the second weak portion 122 of the second conductive sheet 12. Since at least part of the second striker 42 is an insulating member, the arc generated after the second weak portion 122 of the second conductive sheet 12 is broken can be further eliminated, thereby improving safety.

[0078] When the current is normal, the second striker 42 is retracted in the detonating device 4. When the Hall element detects an abnormal current, the detonating device 4 is detonated, causing the second striker 42 to pop out. The second striker 42 hits the second weak portion 122 of the second conductive sheet 12, thereby disconnecting the second weak portion 122 of the second conductive sheet 12, and at the same time, inert gas is sprayed toward the second weak portion 122 of the second conductive sheet 12, thereby eliminating the arc generated after the second weak portion 122 of the second conductive sheet 12 is broken, thereby cutting off the circuit between the motor and the motor controller, thereby improving safety.

[0079] Furthermore, if Figure 2-Figure 7As shown, in the arrangement direction of the first conductive sheet 11 and the second conductive sheet 12, the first striker 41 and the second striker 42 are respectively arranged on opposite sides of the detonating device 4. Thus, one detonating device 4 can cut off the first conductive sheet 11 and the second conductive sheet 12 at the same time, thereby reducing the number of detonating devices 4, simplifying the structure and reducing the cost.

[0080] Furthermore, if Figure 2-Figure 5 and Figure 7 As shown, the second striker 42 includes a second striker column 421, and the second striker column 421 and the corresponding second weak portion 122 of the second conductive sheet 12 are arranged opposite to each other in the width direction of the second conductive sheet 12; it should be noted that at least part of the second striker column 421 is an insulating member, and the insulating part of the second striker column 421 is used to strike the second weak portion 122 of the second conductive sheet 12. It can be understood that the structure of the striker column is firm and reliable, thereby ensuring that the second striker column 421 is not easily broken when striking the second weak portion 122 of the second conductive sheet 12, thereby improving the reliability of the second striker 42 striking the second weak portion 122 of the second conductive sheet 12.

[0081] Furthermore, if Figure 6 As shown, the second striker 42 includes a second strike column 421 and a second cut plate 422, the second cut plate 422 is arranged on the side of the second strike column 421 facing the second conductive sheet 12, the second cut plate 422 and the second through hole 121 are arranged opposite to each other in the width direction of the second conductive sheet 12, and the second cut plate 422 is perpendicular to the second conductive sheet 12. It should be noted that at least part of the second cut plate 422 is an insulating member, and the insulating part of the second cut plate 422 is used to strike the second weak portion 122 of the second conductive sheet 12. The second cut plate 422 is perpendicular to the second conductive sheet 12 means that the plane where the end face of the second conductive sheet 12 in the thickness direction is located is perpendicular to the plane where the end face of the second cut plate 422 in the thickness direction is located.

[0082] It can be understood that the setting of the second impact column 421 ensures that the second impact pin 42 has sufficient structural strength when it impacts the second weak portion 122 of the second conductive sheet 12, thereby preventing the second impact pin 42 from breaking, and the second cutting plate 422 is sharper than the second impact column 421. The setting of the second cutting plate 422 makes it easier for the second impact pin 42 to break the second weak portion 122 of the second conductive sheet 12, thereby further ensuring that when the current is abnormal, the motor and the motor controller cannot form a loop, thereby improving safety.

[0083] In addition, when the second weak portion 122 of the second conductive sheet 12 is cut off, since the second cutting plate 422 is thinner, it is convenient for the second cutting plate 422 to extend into the disconnection point of the second weak portion 122 of the second conductive sheet 12, thereby further eliminating the arc generated after the second weak portion 122 of the second conductive sheet 12 is broken, thereby improving safety.

[0084] In some embodiments of the present invention, Figure 2-Figure 7 As shown, the insurance device 10 further includes a third conductive sheet 16, which is located between the first conductive sheet 11 and the second conductive sheet 12. The third conductive sheet 16 has a third through hole 161 that penetrates the third conductive sheet 16 in the thickness direction of the third conductive sheet 16. Some Hall chips 3 are arranged opposite to at least part of the third through hole 161, or some Hall chips 3 are at least partially inserted into the third through hole 161. It should be noted that by arranging the first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16, the output of three-phase current can be realized, so that the operation of the three-phase motor can be realized.

[0085] It is understandable that the third through hole 161 is provided so that the magnetic flux lines generated on the third conductive sheet 16 can pass through, so that the third through hole 161 becomes a sampling hole of the Hall chip 3, so that the Hall chip 3 can detect the current on the third conductive sheet 16. When the current on the third conductive sheet 16 is abnormal, the detonation device 4 is detonated, and the first striker 41 strikes the first weak portion 112, and the second striker 42 strikes the second weak portion 122, thereby cutting off the first weak portion 112 and the second weak portion 122, so that the motor and the motor controller cannot form a loop, thereby improving safety.

[0086] In some embodiments of the present invention, Figure 1-Figure 8 As shown, the first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16 are located on the same side in the thickness direction of the circuit board 2, at least part of the first conductive sheet 11 and at least part of the second conductive sheet 12 are stacked with the circuit board 2, the detonating device 4 is located between the third conductive sheet 16 and the circuit board 2, the first conductive sheet 11 and the second conductive sheet 12 are arranged in parallel in the thickness direction of the circuit board 2, and the first conductive sheet 11 and the third conductive sheet 16 are arranged in a staggered manner in the thickness direction of the circuit board 2. It can be understood that by staggering the first conductive sheet 11 and the third conductive sheet 16 in the thickness direction of the circuit board 2, it is convenient to install the detonating device 4, thereby improving the installation and production efficiency.

[0087] In some embodiments of the present invention, Figure 2-Figure 7 As shown, the outer contour of the first through hole 111 is U-shaped or V-shaped; thus, there are more options for the outer contour of the first through hole 111, so that the safety device 10 can be applied to different scenarios, thereby increasing the scope of application.

[0088] When there are multiple first through holes 111, the outer contours of the multiple first through holes 111 may all be U-shaped, or some of the outer contours of the multiple first through holes 111 may be U-shaped and some may be V-shaped, or the outer contours of the multiple first through holes 111 may all be V-shaped. Figure 2 , Figure 3 and Figure 6 As shown, the outer contour of the first through hole 111 can be U-shaped; Figure 4 and Figure 5 As shown, among the outer contours of the plurality of first through holes 111, one part is U-shaped and the other part is V-shaped; Figure 7 As shown, the outer contours of the plurality of first through holes 111 are all V-shaped.

[0089] In some embodiments of the present invention, Figure 2-Figure 7 As shown, the outer contour of the second through hole 121 is U-shaped or V-shaped; thus, there are more options for the outer contour of the second through hole 121, so that the safety device 10 can be applied to different scenarios, thereby increasing the scope of application.

[0090] When there are multiple second through holes 121, the outer contours of the multiple second through holes 121 may all be U-shaped, or some of the outer contours of the multiple second through holes 121 may be U-shaped and some may be V-shaped, or the outer contours of the multiple second through holes 121 may all be V-shaped. Figure 2 , Figure 3 and Figure 6 As shown, the outer contour of the second through hole 121 can be U-shaped; Figure 4 and Figure 5 As shown, among the outer contours of the plurality of second through holes 121, one part is U-shaped and the other part is V-shaped; Figure 7 As shown, the outer contours of the plurality of second through holes 121 are all V-shaped.

[0091] In some embodiments of the present invention, Figure 2-Figure 7 As shown, the outer contour of the third through hole 161 is U-shaped or V-shaped. Therefore, there are more options for the outer contour of the third through hole 161, so that the safety device 10 can be applied to different scenarios, thereby increasing the scope of application.

[0092] In some embodiments of the present invention, Figure 1-Figure 8As shown, one end of the first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16 is bent and extended away from the circuit board 2 along the thickness direction of the circuit board 2, and the first conductive sheet 11 and the second conductive sheet 12 are arranged closer to the circuit board 2 than the third conductive sheet 16. Therefore, by bending and extending one end of the first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16 away from the circuit board 2 along the thickness direction of the circuit board 2, the first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16 can utilize part of the space in the thickness direction of the circuit board 2, thereby optimizing the space arrangement and making the structure more compact.

[0093] In some embodiments of the present invention, Figure 7-Figure 9 As shown, at least one of the first conductive sheet 11 and the second conductive sheet 12 includes a first sub-conductive sheet 13, a second sub-conductive sheet 14 and a third sub-conductive sheet 15 connected in sequence, the first sub-conductive sheet 13, the second sub-conductive sheet 14 and the third sub-conductive sheet 15 are separate processed parts, the first through hole 111 is provided on the second sub-conductive sheet 14 of the first conductive sheet 11, and / or the second through hole 121 is provided on the second sub-conductive sheet 14 of the second conductive sheet 12.

[0094] It can be understood that one of the first sub-conductive sheet 13 and the third sub-conductive sheet 15 is connected to the motor, and the other is connected to the motor controller. Taking the first conductive sheet 11 including the first sub-conductive sheet 13, the second sub-conductive sheet 14 and the third sub-conductive sheet 15 as an example, when the current is normal, the two ends of the second sub-conductive sheet 14 are respectively connected to the first sub-conductive sheet 13 and the third sub-conductive sheet 15, so that the motor and the motor controller circuit are connected, and the normal operation of the motor is achieved.

[0095] Taking the first conductive sheet 11 including the first sub-conductive sheet 13, the second sub-conductive sheet 14 and the third sub-conductive sheet 15 as an example, the second sub-conductive sheet 14 is formed as a first weak portion 112 at the first through hole 111. When the current is abnormal, the first weak portion 112 of the second sub-conductive sheet 14 is hit and disconnected, thereby disconnecting the first sub-conductive sheet 13 and the third sub-conductive sheet 15, thereby disconnecting the motor and the motor controller circuit, thereby improving safety. At the same time, when the second sub-conductive sheet 14 is hit too hard, it will cause the second sub-conductive sheet 14 to fly out, but the first sub-conductive sheet 13 and the third sub-conductive sheet 15 will not be affected by the impact, thereby protecting the integrity of the first sub-conductive sheet 13 and the third sub-conductive sheet 15, thereby ensuring the integrity of the motor and the motor controller.

[0096] In addition, when the second sub-conductive sheet 14 is broken, the second sub-conductive sheet 14 can be replaced and the safety device 10 can still be used normally, thereby avoiding the need to replace the entire first conductive sheet 11 and reducing costs.

[0097] In some embodiments of the present invention, the thickness of the first sub-conductive sheet 13 and the third sub-conductive sheet 15 is greater than the thickness of the second sub-conductive sheet 14. Thus, the thickness of the second sub-conductive sheet 14 is thinner, so that the first weak portion 112 of the second sub-conductive sheet 14 is more easily broken, thereby improving safety. At the same time, the manufacturing cost of the second sub-conductive sheet 14 can be reduced, thereby improving economic efficiency.

[0098] In some embodiments of the present invention, there is one first through hole 111, and the first through hole 111 is open toward one side in the width direction of the first conductive sheet 11. It can be understood that at this time, the first through hole 111 and the first striker 41 are arranged opposite to each other in the width direction of the first conductive sheet 11, and the first through hole 111 is open toward one side in the width direction of the first conductive sheet 11, so that the first weak portion 112 of the first conductive sheet 11 is easy to be disconnected, thereby improving safety. At the same time, the provision of one first through hole 111 reduces the number of first through holes 111, thereby simplifying the processing of the first conductive sheet 11, improving the processing and production efficiency of the safety device 10, and reducing the production cost.

[0099] or, as Figure 2 , Figure 6 and Figure 7 As shown, there are two first through holes 111, which are respectively located at the two ends of the first conductive sheet 11 in the width direction and are arranged opposite to each other in the width direction of the first conductive sheet 11, and the two first through holes 111 are open on the sides away from each other; at this time, the first through holes 111 and the first striker 41 are arranged opposite to each other in the width direction of the first conductive sheet 11. Therefore, by providing two first through holes 111, the area of ​​the first weak portion 112 of the first conductive sheet 11 is reduced, thereby further reducing the structural strength of the first weak portion 112 of the first conductive sheet 11, so that the first weak portion 112 of the first conductive sheet 11 is easy to be disconnected, thereby improving safety.

[0100] or, as Figure 3-Figure 5 As shown, there are four first through holes 111, and the four first through holes 111 are divided into two groups, each group includes two first through holes 111 arranged opposite to each other in the width direction of the first conductive sheet 11, the two first through holes 111 in each group are respectively located at the two ends of the width direction of the first conductive sheet 11 and the sides of the two first through holes 111 facing away from each other are open, the two groups of first through holes 111 are spaced apart in the length direction of the first conductive sheet 11, and the first conductive sheet 11 between the two groups of first through holes 111 is constructed as a first weak portion 112.

[0101] Among them, it should be noted that there are four first through holes 111 on the first conductive sheet 11, and there are still two first through holes 161 on the third conductive sheet 16. Since the first through holes 161 on the third conductive sheet 16 are only used to cooperate with the Hall chip 3, the first through holes 161 on the third conductive sheet 16 can be set to two, which makes the processing of the third conductive sheet 16 simple, improves the processing and production efficiency of the safety device 10, and reduces the production cost.

[0102] Furthermore, if Figure 3-Figure 5 As shown, there are four first through holes 111 on the first conductive sheet 11, and the four first through holes 111 are divided into two groups, each group includes two first through holes 111 arranged opposite to each other in the width direction of the first conductive sheet 11, the two first through holes 111 in each group are respectively located at the two ends of the width direction of the first conductive sheet 11 and the sides of the two first through holes 111 facing away from each other are open, the two groups of first through holes 111 are spaced apart in the length direction of the first conductive sheet 11, and the first conductive sheet 11 between the two groups of first through holes 111 is constructed as a first weak portion 112.

[0103] It can be understood that at this time, the first weak portion 112 of the first conductive sheet 11 and the first striker 41 are arranged opposite to each other in the width direction of the first conductive sheet 11, and the Hall chip 3 cooperates with one group of two first through holes 111. By providing four first through holes 111, the structural strength of the first weak portion 112 of the first conductive sheet 11 is further reduced, so that the first weak portion 112 of the first conductive sheet 11 is easily disconnected, thereby improving safety.

[0104] In addition, the first conductive sheet 11 between the two groups of first through holes 111 is constructed into a first weak portion 112. When the first weak portion 112 is disconnected, a gap is more easily formed between the two groups of first through holes 111, thereby making it easier for the first striker 41 to extend into the broken portion of the first weak portion 112 of the first conductive sheet 11, thereby further eliminating the arc generated after the first weak portion 112 of the first conductive sheet 11 is broken, thereby improving safety.

[0105] In some embodiments of the present invention, there is one second through hole 121, and the second through hole 121 is open toward one side in the width direction of the second conductive sheet 12. It can be understood that at this time, the second through hole 121 and the second striker 42 are arranged relative to each other in the width direction of the second conductive sheet 12, and the second through hole 121 is open toward one side in the width direction of the second conductive sheet 12, so that the second weak portion 122 of the second conductive sheet 12 is easy to be disconnected, thereby improving safety. At the same time, the provision of one second through hole 121 reduces the number of second through holes 121, thereby simplifying the processing of the second conductive sheet 12, improving the processing and production efficiency of the safety device 10, and reducing the production cost.

[0106] or, as Figure 2 , Figure 6 and Figure 7 As shown, there are two second through holes 121, which are respectively located at the two ends of the second conductive sheet 12 in the width direction and are arranged opposite to each other in the width direction of the second conductive sheet 12, and the two second through holes 121 are open on the sides away from each other; at this time, the second through holes 121 and the second striker 42 are arranged opposite to each other in the width direction of the second conductive sheet 12. Thus, by providing two second through holes 121, the area of ​​the second weak portion 122 of the second conductive sheet 12 is reduced, thereby further reducing the structural strength of the second weak portion 122 of the second conductive sheet 12, so that the second weak portion 122 of the second conductive sheet 12 is easy to be disconnected, thereby improving safety.

[0107] or, as Figure 3-Figure 5 As shown, there are four second through holes 121, and the four second through holes 121 are divided into two groups, each group includes two second through holes 121 arranged opposite to each other in the width direction of the second conductive sheet 12, the two second through holes 121 in each group are respectively located at the two ends of the width direction of the second conductive sheet 12 and the sides of the two second through holes 121 facing away from each other are open, the two groups of second through holes 121 are spaced apart in the length direction of the second conductive sheet 12, and the second conductive sheet 12 between the two groups of second through holes 121 is constructed as a second weak portion 122.

[0108] Furthermore, if Figure 3-Figure 5 As shown, there are four second through holes 121 on the second conductive sheet 12, and the four second through holes 121 are divided into two groups, each group includes two second through holes 121 arranged opposite to each other in the width direction of the second conductive sheet 12, the two second through holes 121 in each group are respectively located at the two ends of the width direction of the second conductive sheet 12 and the sides of the two second through holes 121 facing away from each other are open, the two groups of second through holes 121 are spaced apart in the length direction of the second conductive sheet 12, and the second conductive sheet 12 between the two groups of second through holes 121 is constructed as a second weak portion 122.

[0109] It can be understood that at this time, the second weak portion 122 of the second conductive sheet 12 and the second striker 42 are arranged opposite to each other in the width direction of the second conductive sheet 12, and the Hall chip 3 cooperates with one group of two second through holes 121. By providing four second through holes 121, the structural strength of the second weak portion 122 of the second conductive sheet 12 is further reduced, so that the second weak portion 122 of the second conductive sheet 12 is easily disconnected, thereby improving safety.

[0110] In addition, the second conductive sheet 12 between the two groups of second through holes 121 is constructed into a second weak portion 122. When the second weak portion 122 is disconnected, a gap is more easily formed between the two groups of second through holes 121, thereby making it easier for the second striker 42 to extend into the broken portion of the second weak portion 122 of the second conductive sheet 12, thereby further eliminating the arc generated after the second weak portion 122 of the second conductive sheet 12 is broken, thereby improving safety.

[0111] In some embodiments of the present invention, the Hall chip 3 is a Hall chip 3 without a magnetic core, or the Hall chip 3 is a Hall chip 3 with a magnetic core. Thus, the selection of the Hall chip 3 is diversified, so that the insurance device 10 can be applied to different scenarios, thereby increasing the scope of application. Among them, when the Hall chip 3 is selected as a Hall chip 3 without a magnetic core, it is small in size and occupies a small space, which is conducive to optimizing the volume of the insurance device 10.

[0112] The following describes the safety device 10 according to specific embodiments 1, 2, 3, 4 and 5 of the present invention. It is worth noting that the following description is merely exemplary and is intended to be used to explain the present invention, but is not to be construed as a limitation on the present invention.

[0113] Embodiment 1:

[0114] like Figure 1-Figure 9 As shown, the safety device 10 according to the embodiment of the present invention includes: a first conductive sheet 11 , a second conductive sheet 12 , a third conductive sheet 16 , a circuit board 2 , a Hall chip 3 , a detonating device 4 and a current sensor 5 .

[0115] Furthermore, if Figure 1-Figure 9As shown, the first conductive sheet 11 has a first through hole 111 penetrating the first conductive sheet 11 in the thickness direction of the first conductive sheet 11, and the first conductive sheet 11 is formed as a first weak portion 112 at the first through hole 111, and the first weak portion 112 is configured to be disconnected when impacted. The Hall chip 3 is arranged on the circuit board 2, and part of the Hall chip 3 is arranged opposite to at least part of the first through hole 111, or part of the Hall chip 3 is inserted into the first through hole 111. The first conductive sheet 11 and the second conductive sheet 12 are spaced apart, and the second conductive sheet 12 has a second through hole 121 penetrating the second conductive sheet 12 in the thickness direction of the second conductive sheet 12, and the second conductive sheet 12 is formed as a second weak portion 122 at the second through hole 121, and the second weak portion 122 is configured to be disconnected when impacted, and part of the Hall chip 3 is arranged opposite to at least part of the second through hole 121, or part of the Hall chip 3 is at least partially inserted into the second through hole 121. The third conductive sheet 16 is located between the first conductive sheet 11 and the second conductive sheet 12. The third conductive sheet 16 has a third through hole 161 that penetrates the third conductive sheet 16 in the thickness direction of the third conductive sheet 16. Some Hall chips 3 are arranged opposite to at least part of the third through hole 161, or some Hall chips 3 are at least partially inserted into the third through hole 161.

[0116] Furthermore, if Figure 1-Figure 9As shown, the detonating device 4 is arranged on the circuit board 2, and the detonating device 4 is located between the first conductive sheet 11 and the second conductive sheet 12. The detonating device 4 has a first striker 41 and a second striker 42. In the arrangement direction of the first conductive sheet 11 and the second conductive sheet 12, the first striker 41 and the second striker 42 are respectively arranged on opposite sides of the detonating device 4. At least a portion of the first striker 41 is an insulating member, and the first striker 41 is arranged corresponding to the first conductive sheet 11. The first striker 41 is opposite to the first weak portion 112 of the first conductive sheet 11, and the insulating portion of the first striker 41 is used to strike the first weak portion 112 of the first conductive sheet 11. The second striker 42 is opposite to the second weak portion 122 of the second conductive sheet 12, and at least a portion of the second striker 42 is an insulating member. The insulating portion of the second striker 42 is used to strike the second weak portion 122 of the second conductive sheet 12. The first striker 41 includes a first striker column 411 and a second striker column 421. The first striker column 411 and the corresponding first weak portion 112 of the first conductive sheet 11 are arranged opposite to each other in the width direction of the first conductive sheet 11. The first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16 are located on the same side in the thickness direction of the circuit board 2. At least a portion of the first conductive sheet 11 and at least a portion of the second conductive sheet 12 are stacked with the circuit board 2. The detonator 4 is located between the third conductive sheet 16 and the circuit board 2. The first conductive sheet 11 and the second conductive sheet 12 are arranged in parallel in the thickness direction of the circuit board 2. The first conductive sheet 11 and the third conductive sheet 16 are arranged in a staggered manner in the thickness direction of the circuit board 2. One end of the first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16 is bent and extended away from the circuit board 2 along the thickness direction of the circuit board 2. The first conductive sheet 11 and the second conductive sheet 12 are arranged closer to the circuit board 2 than the third conductive sheet 16.

[0117] Furthermore, if Figure 2-Figure 7 As shown, the current sensor 5 is arranged on the circuit board 2 and connected to the circuit board 2, and is used to detect the current signal on the Hall chip 3. The detonating device 4 is configured to detonate and eject the first striker 41 to hit the weak part of the corresponding first conductive sheet 11 when the current sensor 5 detects that the current signal of the Hall chip 3 is abnormal.

[0118] Embodiment 2:

[0119] like Figure 3 and Figure 5As shown, most structures of the second embodiment are the same as those of the first embodiment, wherein the same structures are shown with the same marks in the drawings, and the only difference is that there are four first through holes 111, and the four first through holes 111 are divided into two groups, each group includes two first through holes 111 arranged opposite to each other in the width direction of the first conductive sheet 11, the two first through holes 111 of each group are respectively located at the two ends of the width direction of the first conductive sheet 11 and the sides of the two first through holes 111 facing away from each other are open, the two groups of first through holes 111 are spaced apart in the length direction of the first conductive sheet 11, and the first conductive sheet 11 between the two groups of first through holes 111 is constructed as a first weak portion 112.

[0120] Embodiment three:

[0121] like Figure 4 and Figure 5 As shown, most structures of the third embodiment are the same as those of the second embodiment, wherein the same structures are shown with the same marks in the drawings, and the only difference is that the outer contour of some first through holes 111 is U-shaped, and the outer contour of some first through holes 111 is V-shaped.

[0122] Embodiment 4:

[0123] like Figure 6 As shown, most structures of the fourth embodiment are the same as those of the first embodiment, wherein the same structures are shown with the same marks in the drawings, and the only difference is that the first impact pin 41 includes an impact column and a cutting plate, the cutting plate is arranged on the side of the impact column facing the corresponding first conductive sheet 11, the cutting plate and the corresponding first through hole 111 of the first conductive sheet 11 are arranged opposite to each other in the width direction of the first conductive sheet 11, and the cutting plate is perpendicular to the first conductive sheet 11.

[0124] Embodiment five:

[0125] like Figure 7-Figure 9 As shown, the fifth embodiment has the same structure as the first embodiment, wherein the same structure is indicated by the same mark in the drawings, and the only difference is that the first conductive sheet 11 and the second conductive sheet 12 both include a first sub-conductive sheet 13, a second sub-conductive sheet 14 and a third sub-conductive sheet 15 connected in sequence, the first sub-conductive sheet 13, the second sub-conductive sheet 14 and the third sub-conductive sheet 15 are separate processed parts, the first through hole 111 is provided on the second sub-conductive sheet 14 of the first conductive sheet 11, the second through hole 121 is provided on the second sub-conductive sheet 14 of the second conductive sheet 12, and the thickness of the first sub-conductive sheet 13 and the third sub-conductive sheet 15 is greater than the thickness of the second sub-conductive sheet 14. The outer contour of the first through hole 111 is V-shaped.

[0126] The following describes a motor controller according to an embodiment of the present invention.

[0127] The motor controller according to the embodiment of the present invention includes the above-mentioned safety device 10 .

[0128] According to the motor controller of the embodiment of the present invention, by setting the above-mentioned safety device 10, a first through hole 111 is set on the first conductive sheet 11 and penetrates the first conductive sheet 11 in the thickness direction of the first conductive sheet 11, and the first conductive sheet 11 is formed as a first weak portion 112 at the first through hole 111, and a Hall chip 3 is set on the circuit board 2, and part of the Hall chip 3 is arranged opposite to at least part of the first through hole 111, or part of the Hall chip 3 is inserted into the first through hole 111, so that the first through hole 111 can be a disconnection hole of the first conductive sheet 11, which is convenient for disconnecting the first conductive sheet 11 when the current is abnormal, and the first through hole 111 can also be used as a sampling hole of the Hall chip 3, so that the first through hole 111 can be used for two purposes, so that the setting of the first through hole 111 can be reduced, so that the processing of the first conductive sheet 11 is simple, the processing and production efficiency of the safety device 10 is improved, and the production cost is reduced.

[0129] In some embodiments of the present invention, the safety device 10 further includes a second conductive sheet 12, a third conductive sheet 16 and a power component, the first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16 are constructed as three-phase conductive members, one end of the first conductive sheet 11, the second conductive sheet 12 and the third conductive sheet 16 is connected to the power component, and the other end is used to connect to the motor. Thus, the normal operation of the three-phase motor can be achieved.

[0130] In some embodiments of the present invention, the circuit board 2 is configured as a control board of a motor controller. Thus, the circuit board 2 has a control function, so that the circuit board 2 can control the detonation of the detonation device 4 according to the current signal detected by the Hall chip 3, thereby serving as a bridge of the Hall chip 3 and realizing the control function, thereby improving the integration.

[0131] A motor assembly according to an embodiment of the present invention is described below.

[0132] A motor assembly according to an embodiment of the present invention includes the above-mentioned motor controller.

[0133] According to the motor assembly of the embodiment of the present invention, by setting the above-mentioned motor controller, a first through hole 111 is set on the first conductive sheet 11 and penetrates the first conductive sheet 11 in the thickness direction of the first conductive sheet 11, and the first conductive sheet 11 is formed as a first weak portion 112 at the first through hole 111, and a Hall chip 3 is set on the circuit board 2, and part of the Hall chip 3 is arranged opposite to at least part of the first through hole 111, or part of the Hall chip 3 is inserted into the first through hole 111, so that the first through hole 111 can be a disconnection hole of the first conductive sheet 11, which is convenient for disconnecting the first conductive sheet 11 when the current is abnormal, and the first through hole 111 can also be used as a sampling hole of the Hall chip 3, so that the first through hole 111 can be used for two purposes, so that the setting of the first through hole 111 can be reduced, so that the processing of the first conductive sheet 11 is simple, the processing and production efficiency of the safety device 10 is improved, and the production cost is reduced.

[0134] A vehicle according to an embodiment of the present invention will be described below.

[0135] A vehicle according to an embodiment of the present invention includes the above-mentioned motor assembly.

[0136] According to the vehicle of the embodiment of the present invention, by setting the above-mentioned motor assembly, a first through hole 111 is set on the first conductive sheet 11 and penetrates the first conductive sheet 11 in the thickness direction of the first conductive sheet 11, and the first conductive sheet 11 is formed as a first weak portion 112 at the first through hole 111, and a Hall chip 3 is set on the circuit board 2, and part of the Hall chip 3 is arranged opposite to at least part of the first through hole 111, or part of the Hall chip 3 is inserted into the first through hole 111, so that the first through hole 111 can be a disconnection hole of the first conductive sheet 11, which is convenient for disconnecting the first conductive sheet 11 when the current is abnormal, and the first through hole 111 can also be used as a sampling hole of the Hall chip 3, so that the first through hole 111 can be used for two purposes, so that the setting of the first through hole 111 can be reduced, so that the processing of the first conductive sheet 11 is simple, the processing and production efficiency of the safety device 10 is improved, and the production cost is reduced.

[0137] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0138] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A safety device, characterized in that: include: A first conductive sheet, wherein the first conductive sheet has a first through hole penetrating the first conductive sheet in a thickness direction of the first conductive sheet, the first conductive sheet is formed as a first weak portion at the first through hole, and the first weak portion is configured to be broken when impacted; Circuit boards; A Hall chip is arranged on the circuit board, part of the Hall chip is arranged opposite to at least part of the first through hole, or part of the Hall chip is at least partially inserted into the first through hole.

2. The safety device according to claim 1, characterized in that: The safety device also includes: A detonating device, wherein the detonating device is arranged on the circuit board, and the detonating device has a first striker, at least a portion of the first striker is an insulating member, the first striker is arranged corresponding to the first conductive sheet, the first striker is opposite to the first weak portion of the first conductive sheet, and the insulating portion of the first striker is used to strike the first weak portion of the first conductive sheet.

3. The safety device according to claim 2, characterized in that: The first striker includes a first striker column, and the first striker column and the first weak portion are arranged opposite to each other in the width direction of the first conductive sheet; Alternatively, the first impact pin includes a first impact column and a first cutting plate, the first cutting plate is arranged on the side of the first impact column facing the first conductive sheet, the first cutting plate and the first through hole are arranged opposite to each other in the width direction of the first conductive sheet, and the first cutting plate is perpendicular to the first conductive sheet.

4. The safety device according to claim 2, characterized in that: The safety device also includes a current sensor, which is arranged on the circuit board and connected to the circuit board, and is used to detect the current signal on the Hall chip. The detonation device is configured to detonate and eject the first firing pin to hit the weak portion corresponding to the first conductive sheet when the current sensor detects that the current signal of the Hall chip is abnormal.

5. The safety device according to claim 2, characterized in that: Also includes: A second conductive sheet, the first conductive sheet and the second conductive sheet are spaced apart, the second conductive sheet has a second through hole penetrating the second conductive sheet in the thickness direction of the second conductive sheet, the second conductive sheet is formed as a second weak portion at the second through hole, the second weak portion is configured to be broken when impacted, part of the Hall chip is arranged opposite to at least part of the second through hole, or part of the Hall chip is at least partially inserted into the second through hole.

6. The safety device according to claim 5, characterized in that: The detonating device is located between the first conductive sheet and the second conductive sheet, and the detonating device also has a second striker, which is opposite to the second weak portion of the second conductive sheet, and at least a portion of the second striker is an insulating member, and the insulating portion of the second striker is used to strike the second weak portion of the second conductive sheet, and in the arrangement direction of the first conductive sheet and the second conductive sheet, the first striker and the second striker are respectively arranged on opposite sides of the detonating device.

7. The safety device according to claim 5, characterized in that: It also includes a third conductive sheet, which is located between the first conductive sheet and the second conductive sheet. The third conductive sheet has a third through hole that penetrates the third conductive sheet in the thickness direction of the third conductive sheet. Some of the Hall chips are arranged opposite to at least some of the third through holes, or some of the Hall chips are at least partially inserted into the third through holes.

8. The safety device according to claim 7, characterized in that: The first conductive sheet, the second conductive sheet and the third conductive sheet are located on the same side in the thickness direction of the circuit board, at least a portion of the first conductive sheet and at least a portion of the second conductive sheet are stacked with the circuit board, the detonation device is located between the third conductive sheet and the circuit board, the first conductive sheet and the second conductive sheet are arranged in parallel in the thickness direction of the circuit board, and the first conductive sheet and the third conductive sheet are arranged in an offset manner in the thickness direction of the circuit board.

9. The safety device according to claim 7, characterized in that: The outer contour of the first through hole is U-shaped or V-shaped; And / or, the outer contour of the second through hole is U-shaped or V-shaped; And / or, the outer contour of the third through hole is U-shaped or V-shaped.

10. The safety device according to claim 7, characterized in that: One end of the first conductive sheet, the second conductive sheet and the third conductive sheet is bent and extended away from the circuit board along the thickness direction of the circuit board, and the first conductive sheet and the second conductive sheet are arranged closer to the circuit board than the third conductive sheet.

11. The safety device according to claim 5, characterized in that: At least one of the first conductive sheet and the second conductive sheet includes a first sub-conductive sheet, a second sub-conductive sheet and a third sub-conductive sheet connected in sequence, the first sub-conductive sheet, the second sub-conductive sheet and the third sub-conductive sheet are separately processed parts, the first through hole is provided on the second sub-conductive sheet of the first conductive sheet, and / or the second through hole is provided on the second sub-conductive sheet of the second conductive sheet.

12. The safety device according to claim 11, characterized in that: The thickness of the first sub-conductive sheet and the third sub-conductive sheet is greater than the thickness of the second sub-conductive sheet.

13. The safety device according to any one of claims 1 to 12, characterized in that: There is one first through hole, and the first through hole is open toward one side in the width direction of the first conductive sheet; Or, there are two first through holes, the two first through holes are respectively located at two ends of the first conductive sheet in the width direction and are arranged opposite to each other in the width direction of the first conductive sheet, and the two first through holes are open at sides facing away from each other; Or, there are four first through holes, which are divided into two groups, each group includes two first through holes arranged opposite to each other in the width direction of the first conductive sheet, the two first through holes in each group are respectively located at the two ends of the width direction of the first conductive sheet and the sides of the two first through holes facing away from each other are open, the two groups of first through holes are spaced apart in the length direction of the first conductive sheet, and the first conductive sheet between the two groups of first through holes is constructed as the first weak portion.

14. The safety device according to claim 1, characterized in that: The Hall chip is a Hall chip without a magnetic core, or the Hall chip is a Hall chip with a magnetic core.

15. A motor controller, characterized in that: Comprising a safety device according to any one of claims 1-14.

16. The motor controller according to claim 15, characterized in that: The fuse device also includes a second conductive plate, a third conductive plate and a power component. The first conductive plate, the second conductive plate and the third conductive plate are constructed as three-phase conductive parts. One end of the first conductive plate, the second conductive plate and the third conductive plate is connected to the power component, and the other end is used to connect to the motor.

17. The motor controller according to claim 16, characterized in that: The circuit board is configured as a control board of the motor controller.

18. A motor assembly comprising a motor controller according to any one of claims 15-17.

19. A vehicle comprising the motor assembly according to claim 18.

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