Electrical devices, electrical device assemblies, motor controllers, and vehicles

Abstract

A vehicle having a motor controller. The motor controller has an electrical device assembly, and the electrical device assembly has an electrical device. The electrical device comprises a first electrical device body, a first connection terminal, and a second connection terminal. The first connection terminal has a first connection component protruding from the first electrical device body in a first direction, and the second connection terminal has a second connection component protruding from the first electrical device body in a first direction, and each first connection component and second connection component is stacked in a second direction intersecting the first direction, and there are multiple first connection components and multiple second connection components, all of which are spaced apart.

Description

Technical Field

[0001] Cross - reference to Related Applications This disclosure claims priority to Chinese Patent Application No. 202310238890.9, titled "ELECTRICAL DEVICE, ELECTRICAL DEVICE MODULE, MOTOR CONTROLLER, AND VEHICLE", filed with the China National Intellectual Property Administration on March 3, 2023, which is incorporated herein by reference in its entirety.

[0002] This disclosure relates to the technical field of electrical devices, and more particularly, to electrical devices, electrical device assemblies, motor controllers, and vehicles.

Background Art

[0003] Electrical devices in an AC circuit inevitably generate stray inductance under the action of electromagnetic induction. The existence of stray inductance brings problems such as losses or signal attenuation in the circuit system, reduces the stability of the electrical device itself, and affects the functions of other devices in the circuit. The method of reducing the stray inductance of electrical devices remains an unsolved problem in the field of electrical devices.

Summary of the Invention

[0004] The objective of this disclosure is to provide an electrical device, an electrical device assembly, a motor controller, and a vehicle capable of reducing the stray inductance on the electrical device, thereby improving the stability and anti - interference ability of the electrical device.

[0005] To achieve the above objective, the first aspect of this disclosure is a first electrical device body, a first connection terminal including a first connection portion protruding from the first electrical device body along a first direction, A second connection terminal including a second connection portion protruding from the body of a first electrical device along a first direction, wherein the first connection portion and the second connection portion are stacked along a second direction, and the second direction intersects the first direction, An electrical device equipped with, Each of the first and second connection parts is multiple, and each of the multiple first connection parts and the multiple second connection parts is arranged at intervals. We provide electrical devices.

[0006] According to one embodiment of the present disclosure, the length of the first connection in the third direction is equal to the length of the second connection in the third direction, and the third direction intersects the first and second directions.

[0007] According to one embodiment of the present disclosure, the length of one of the first connecting portion and the second connecting portion in the first direction is greater than the length of the other of the first connecting portion and the second connecting portion in the first direction.

[0008] According to one embodiment of the present disclosure, the distance between the first connecting portion and the second connecting portion in the second direction is 1 mm or less.

[0009] According to one embodiment of the present disclosure, the electrical device further includes a first insulating sheet, at least a portion of which is positioned between a first connection portion and a second connection portion, and the first insulating sheet is a plurality of sheets, which are arranged in a stacked manner along a second direction.

[0010] A second aspect of the present disclosure provides an electrical device assembly comprising a first electrical device and a second electrical device, wherein the first electrical device is electrically connected to the second electrical device, and at least one of the first electrical device and the second electrical device is the aforementioned electrical device.

[0011] According to one embodiment of the present disclosure, the first electrical device is an electrical device, Second electrical device body A second electrical device, The third connection terminal includes a third connection portion that protrudes from the second electrical device body along a first direction, The fourth connection terminal includes a fourth connection portion that protrudes from the second electrical device body along a first direction, and the third and fourth connection portions are arranged stacked in a second direction. The first connection part is connected to the third connection part, and the second connection part is connected to the fourth connection part.

[0012] In one embodiment of the present disclosure, the third and fourth connecting portions each extend along the third direction, the plurality of first and second connecting portions are arranged in one-to-one correspondence, the plurality of first and second connecting portions are spaced apart along the third direction, the third connecting portion is connected to the plurality of first connecting portions, the fourth connecting portion is connected to the plurality of second connecting portions, and the third direction intersects both the first and second directions.

[0013] In one embodiment of the present disclosure, the number of first, second, third, and fourth connection portions is the same, and the plurality of first connection portions are spaced apart along the third direction, the plurality of second connection portions are spaced apart along the third direction, the plurality of third connection portions are spaced apart along the third direction, the plurality of fourth connection portions are spaced apart along the third direction, each first connection portion is connected to one third connection portion, each second connection portion is connected to one fourth connection portion, and the third direction intersects both the first and second directions.

[0014] In one embodiment of the present disclosure, the length of each of the first connecting portions in the third direction is the same as the length of the third connecting portion to which the first connecting portion is connected in the third direction, and the length of each of the second connecting portions in the third direction is the same as the length of the fourth connecting portion to which the second connecting portion is connected in the third direction.

[0015] According to one embodiment of the present disclosure, the electrical device assembly further includes a first insulating sheet and a second insulating sheet, wherein at least a portion of the second insulating sheet is disposed between a third connecting portion and a fourth connecting portion. The projection of at least one of the first and second connection portions on the first insulating sheet is entirely within the first insulating sheet, and the projection of at least one of the third and fourth connection portions on the second insulating sheet is entirely within the second insulating strip.

[0016] According to one embodiment of the present disclosure, the end of the first insulating sheet furthest from the first electrical device body extends between the third and fourth connection portions and laminates with the second insulating sheet in a second direction, and / or the end of the second insulating sheet furthest from the second electrical device body extends between the first and second connection portions and laminates with the first insulating sheet along a second direction.

[0017] In one embodiment of the present disclosure, the end face of a first connection portion furthest from the first electrical device body aligns with the end face of a third connection portion furthest from the second electrical device body, and the end face of a second connection portion furthest from the first electrical device body aligns with the end face of a fourth connection portion furthest from the second electrical device body.

[0018] In one embodiment of the present disclosure, two surfaces of a first connecting portion facing each other along a second direction are each coplanar with two surfaces of a third connecting portion facing each other along a second direction, and two surfaces of a second connecting portion facing each other along a second direction are each coplanar with two surfaces of a fourth connecting portion facing each other along a second direction.

[0019] In one embodiment of the present disclosure, the end of a first connection portion furthest from the first electrical device body overlaps with the end of a third connection portion furthest from the second electrical device body, and the end of a second connection portion furthest from the first electrical device body overlaps with the end of a fourth connection portion furthest from the second electrical device body.

[0020] According to an embodiment of the present disclosure, the overlapping area of the first connection portion and the third connection portion has a length from 2 mm to 8 mm in the first direction, and the overlapping area of the second connection portion and the fourth connection portion has a length from 2 mm to 8 mm in the first direction.

[0021] According to an embodiment of the present disclosure, there is a gap disposed between an end portion of the first connection portion far from the first electrical device body and an end portion of the third connection portion far from the second electrical device body, and the gap is configured to at least partially expose a connection portion between the second connection portion and the fourth connection portion. The electrical device assembly further includes an intermediate connection piece, one end of the intermediate connection piece is connected to the first connection portion, and the other end of the intermediate connection piece is connected to the third connection portion.

[0022] According to an embodiment of the present disclosure, the intermediate connection piece is disposed on a side of the first connection portion and the third connection portion facing away from the second connection portion and the fourth connection portion, and the intermediate connection portion is a U-shaped body portion whose opening faces the gap and includes a first side wall and a second side wall disposed opposite to each other, the U-shaped body portion; is a first overlapping portion, one end of which is connected to the first side wall and the other end of which is used to overlap the first connection portion, and the inner side wall of the first side wall is in the same plane as an end face of an end portion of the first connection portion far from the first electrical device body, the first overlapping portion; is a second overlapping portion, one end of which is connected to the second side wall and the other end of which is used to overlap the third connection portion, and the inner side wall of the second side wall is in the same plane as an end face of an end portion of the third connection portion far from the second electrical device body, the second overlapping portion; and includes.

[0023] The third aspect of the present disclosure provides a motor controller including the above-described electric device assembly, wherein one of the first electric device and the second electric device is a capacitor, the other of the first electric device and the second electric device is a power device, and the capacitor is for electrical connection to a power battery.

[0024] The fourth aspect of the present disclosure provides a vehicle including the above-described motor controller.

[0025] In the electric device provided by the present disclosure, the magnetic fields excited on the first connection portion and the second connection portion can cancel each other out. Therefore, the stray inductance on the electric device is reduced, the stability and anti-interference ability of the electric device are improved, and the plurality of first connection portions and the plurality of second connection portions on the electric device are arranged at intervals, which enables current data to be collected in the operating state of the electric device and can facilitate the accurate evaluation and analysis of the electric device.

[0026] Further features and advantages of the present disclosure will be described in detail in the section of the mode for carrying out the invention below.

[0027] The accompanying drawings are included to provide a further understanding of the present disclosure, constitute a part of this specification, and function to clarify the present disclosure together with the following detailed description, but do not constitute the limit of the present disclosure.

Brief Description of the Drawings

[0028] [Figure 1] It is a perspective view of an electric device provided according to an exemplary embodiment of the present disclosure. [Figure 2] It is a perspective view of an electric device provided according to another exemplary embodiment of the present disclosure. [Figure 3] It is a perspective view of an electric device assembly provided according to an exemplary embodiment of the present disclosure. [Figure 4]This is a side view of an electrical device assembly provided according to an exemplary embodiment of the present disclosure. [Figure 5] This is a magnified view of section "A" in Figure 4. [Figure 6] This is a side view of an electrical device assembly provided according to another exemplary embodiment of the present disclosure. [Figure 7] This is a magnified view of section "B" in Figure 6. [Figure 8] This is a perspective view of an electrical device assembly provided according to yet another exemplary embodiment of the present disclosure. [Figure 9] This is a side view of an electrical device assembly provided according to yet another exemplary embodiment of the present disclosure. [Figure 10] This is a magnified view of section "C" in Figure 9. [Figure 11] This is a perspective view of an intermediate connector of an electrical device assembly provided according to yet another exemplary embodiment of the present disclosure. [Figure 12] This is a schematic diagram of a motor controller including an electrical device assembly provided according to one exemplary embodiment of the present disclosure. [Figure 13] This is a schematic diagram of a vehicle including a motor controller provided according to one exemplary embodiment of the present disclosure. [Modes for carrying out the invention]

[0029] Specific embodiments of this disclosure are described below in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are provided solely for illustrative and illustrative purposes of this disclosure and are not intended to limit this disclosure.

[0030] Unless otherwise stated in this disclosure, terms such as “first direction,” “second direction,” and “third direction” are used as directions defined for convenience in describing the structure of an electrical device assembly, and are not limited to electrical device assemblies, where “first direction,” “second direction” may refer to the first and second directions indicated by arrows in Figures 1, 3, 4, 6, and 9; “third direction” may refer to the third direction indicated by arrows in Figures 1 and 3; and “inside,” “outside” may mean the inside or outside of the contour of the relevant component. In addition, it should be noted that terms such as “first,” “second,” etc., are used to distinguish one element from another without any order or importance. Furthermore, in descriptions related to figures, the same reference number in different figures refers to the same element.

[0031] In conventional technology, when an electrical device is connected to an AC circuit, the alternating current has an electromagnetic induction effect, which can excite stray inductance at locations such as the connection points of the electrical device. For example, an electrical device may be a capacitor placed in a vehicle's motor controller. The capacitor in the motor controller is connected in parallel with the power device to absorb the peak tip voltage in the circuit. However, the alternating current on both sides of the capacitor can easily excite stray inductance on the capacitor's connection components. This stray inductance increases voltage fluctuations, can damage the power device, and thus affect the safety of the vehicle.

[0032] With this in mind, as shown in Figures 1 to 11, a first aspect of the present disclosure provides an electrical device 101 including a first electrical device body 1, a first connection terminal 11, and a second connection terminal 12. The first connection terminal 11 includes a first connection portion 111 projecting from the first electrical device body 1 in a first direction, and the second connection terminal 12 includes a second connection portion 121 projecting from the first electrical device body 1 in a first direction. The first connection portion 111 and the second connection portion 121 are stacked along a second direction intersecting the first direction, and there are multiple first connection portions 111 and multiple second connection portions 121, all spaced apart.

[0033] In the electrical device 101 provided by the above embodiment, the electrical device 101 is connected in an electrical circuit by a first connection portion 111 and a second connection portion 121. When the electrical device 101 is connected to an AC circuit, the direction of the current on the first connection portion 111 and the second connection portion 121 is constantly changing, and the direction of the current flow on the first connection portion 111 and the second connection portion 121 is always opposite. It should be noted that the direction of current flow referred to in this disclosure does not mean the direction of current flow in three-dimensional space, but rather the circuit flow direction when current flows in a channel starting from the first electrical device body 1. For example, when the current on the first connection portion 111 on the electrical device 101 flows from the first electrical device body 1 to an external load device to which the first electrical device body 1 is connected, the current on the second connection portion 121 flows from the external load device to the first electrical device body 1, that is, the currents on the first and second connection portions 111 and 121 flow in opposite directions.

[0034] As shown in Figure 1, the directions of current flow on the first connection portion 111 and the second connection portion 121 are always opposite, so the directions of the magnetic fields excited on the first connection portion 111 and the second connection portion 121 are also opposite. The first connection portion 111 and the second connection portion 121 are stacked in the second direction, and as a result, the magnetic fields excited on the first connection portion 111 and the second connection portion 121 can be at least partially canceled out, thereby reducing the stray inductance on the electrical device 101 and improving the stability and interference immunity of the electrical device 101.

[0035] In order to enable detection of the operating state of an electrical device in the prior art, it is generally necessary to collect current data on the electrical device. In an electrical device 101 provided by one embodiment of the present disclosure, there are multiple first connection portions 111 and multiple second connection portions 121 on the electrical device 101, and all of the multiple first connection portions 111 and multiple second connection portions 121 are spaced apart. When testing the current on the first connection portions 111 and second connection portions 121 on the electrical device 101, a clamp ammeter may be used to detect the current of the electrical device 101 in its operating state. As shown in Figure 3, the multiple first connection portions 111 are spaced apart, and the multiple second connection portions 121 are spaced apart, so that the gap between adjacent first connection portions 111 and second connection portions 121 in the third direction allows the clamp ammeter's sensing head to surround a single first connection portion 111 and a second connection portion 121 to collect AC current data on that single first connection portion 111 and a second connection portion 121. It can be seen that when the electrical device 101 is connected to an AC circuit, the current on the first connection portions 111 and a second connection portion 121 can be detected without the need to electrically connect any other sensing device or circuit to the AC circuit, thereby reducing the impact on the AC circuit and facilitating accurate evaluation and analysis of the electrical device 101.

[0036] As an example of an implementation scenario, the electrical device 101 described above may be a capacitor, and the capacitor may be applied to the motor controller 200 of the vehicle 300. The first connection portion 111 and the second connection portion 121 of the capacitor may be connected to a power device in the motor controller 200. Since the magnetic fields generated on the first connection portion 111 and the magnetic fields generated on the second connection portion 121 can cancel each other out at least partially, the stray inductance on the capacitor can be reduced, making the capacitor's "DC blocking and AC passing" function more stable, effectively absorbing peak tip voltages in the circuit, smoothing voltage fluctuations between the power device and the battery pack of the vehicle 300, thereby improving the stability of the vehicle power system and ensuring the safety of the vehicle 300. Furthermore, the first connection portion 111 and the second connection portion 121 of the capacitor are each multiple, and all multiple first connection portion 111 and multiple second connection portion 121 are spaced apart, allowing a detector to detect the current on the first connection portion 111 and the second connection portion 121 when the capacitor and power device are connected, and also allowing individual detection of the current on a single pair of the first connection portion 111 and the second connection portion 121, as well as combined detection of the current across multiple pairs of the first connection portion 111 and the second connection portion 121, in order to obtain data information between multiple sets of capacitors and power devices and to accurately detect and evaluate the function of the motor controller 200, which is advantageous in improving the functionality and safety of the motor controller 200.

[0037] Through the above technical solutions, the magnetic fields excited on the first connection portion 111 and the second connection portion 121 can be at least partially canceled out, thus reducing the stray inductance on the electrical device 101, improving the stability and anti-interference capability of the electrical device 101, and allowing the multiple first connection portions 111 and the multiple second connection portions 121 on the electrical device 101 to be spaced apart, which enables the collection of current data of the electrical device 101 while it is operating, thereby facilitating accurate evaluation and analysis of the electrical device 101.

[0038] The electrical device 101 described above may be any active or passive device. Examples of active devices include electron tubes, transistors, etc., and examples of passive devices include resistors, capacitors, inductors, converters, attenuators, matching circuits, resonators, filters, or mixers. This disclosure does not particularly limit the specific structure and function of the electrical device 101.

[0039] Both the first connection portion 111 and the second connection portion 121 extend outward from the housing along the first direction. Optionally, the length of the first connection portion 111 in the third direction may be equal to the length of the second connection portion 121 in the third direction, and the third direction intersects the first and second directions. In this embodiment, the lengths of the first connection portion 111 and the second connection portion 121 in the third direction are the same, and the magnetic fields generated on the first connection portion 111 and the second connection portion 121 have a high degree of overlap so as to cancel each other out as much as possible to minimize the stray inductance on the electrical device 101.

[0040] The shorter the distance between the first connection portion 111 and the second connection portion 121 in the second direction, the greater the degree of overlap of the magnetic fields generated on the first connection portion 111 and the second connection portion 121, and the better the cancellation effect. Theoretically, if the first connection portion 111 and the second connection portion 121 completely overlap, the magnetic fields on the first connection portion 111 and the second connection portion 121 can be completely canceled out. In practical applications, to avoid positional interference between the first connection portion 111 and the second connection portion 121, the distance between the first connection portion 111 and the second connection portion 121 in the second direction can be optionally set to 1 mm or less. In this embodiment, the first connection portion 111 and the second connection portion 121 can be arranged in a manner that avoids positional interference, and a good cancellation effect of the magnetic fields excited on the first connection portion 111 and the second connection portion 121 can be ensured. Optionally, the distance between the first connecting portion 111 and the second connecting portion 121 in the second direction may be 0.5 mm.

[0041] To facilitate the distinction between the first connection portion 111 and the second connection portion 121, as shown in Figures 1, 5, and 7, optionally, the length of one of the first connection portion 111 and the second connection portion 121 in the first direction is greater than the length of the other of the first connection portion 111 and the second connection portion 121 in the first direction. The operator can identify the relationship between the first connection portion 111 and the second connection portion 121 according to the different lengths of the first connection portion 111 and the second connection portion 121 in the first direction. This ensures that the first connection portion 111 and the second connection portion 121 can be correctly connected to the external load device. In particular, in embodiments in which the electrical device 101 is connected to a high-voltage circuit, damage and failure of the electrical device 101 are likely to occur if the first connection portion 111 and the second connection portion 121 of the electrical device 101 are mistakenly connected to the high-voltage circuit. Therefore, in the above embodiments, the first connection portion 111 and the second connection portion 121 have different lengths in the first direction, which facilitates distinction and recognition by the operator for accurate installation work.

[0042] Optionally, the electrical device 101 may further include a first insulating sheet 13, at least a portion of which is positioned between the first connection portion 111 and the second connection portion 121 to isolate the current between the first connection portion 111 and the second connection portion 121, thereby preventing a short circuit between the first connection portion 111 and the second connection portion 121.

[0043] In the above embodiment, optionally, the first insulating sheet 13 may be a plurality of sheets, which are stacked in a second direction to improve the insulating performance between the first connection portion 111 and the second connection portion 121, to avoid the occurrence of breakdown and short circuits between the first connection portion 111 and the second connection portion 121, and to improve the safety of the electrical device 101.

[0044] As shown in Figures 3 to 10, a second aspect of the present disclosure provides an electrical device assembly 100 including a first electrical device 10 and a second electrical device 20, wherein the first electrical device 10 is electrically connected to the second electrical device 20. At least one of the first electrical device 10 and the second electrical device 20 is the electrical device 101 in the above embodiment.

[0045] In the electrical device assembly 100 described above, the first electrical device 10 and the second electrical device 20 may be electrical devices having the same structure and function, or they may be electrical devices having different structures and functions. In one exemplary embodiment, the first electrical device 10 may be a capacitor, and the second electrical device 20 may be a power device. The capacitor and the power device may each have a first connection portion 11 and a second connection portion 121 included in the electrical device 101 described above, where the first connection portion 111 and the second connection portion 121 in the capacitor are stacked in a second direction, and the first connection portion 111 and the second connection portion 121 in the power device are stacked along a second direction. As can be seen, the electrical devices included in the electrical device assembly 100 in embodiments of this disclosure may be used to mean electrical devices having different structures and functions, and this disclosure is not particularly limited in this regard.

[0046] As an exemplary embodiment, as shown in Figure 3, optionally, the first electrical device 10 is the previously described electrical device 101, and the electrical device assembly 100 further includes a second electrical device 20. The second electrical device 20 includes a second electrical device body 2, a third connector 21, and a fourth connector 22. The third connector 21 includes a third connector portion 211 projecting from the second electrical device body 2 along a first direction, and the fourth connector 22 includes a fourth connector portion 221 projecting from the second electrical device body 2 along a first direction. The third connector portion 211 and the fourth connector portion 221 are stacked along a second direction, with the first connector portion 111 connected to the third connector portion 211, and the second connector portion 121 connected to the fourth connector portion 221.

[0047] In the above embodiment, the first electrical device 10 and the second electrical device 20 are electrically connected, and the third connection portion 211 and the fourth connection portion 221 of the second electrical device 20 are adaptable to connect to the first connection portion 111 and the second connection portion 221 of the first electrical device 10. Since the third connection portion 211 and the fourth connection portion 221 are arranged stacked along the second direction, the magnetic fields excited on the third connection portion 211 and the fourth connection portion 221 can be at least partially canceled out, thereby reducing the stray inductance on the second electrical device 20 and improving the stability and anti-interference capability of the second electrical device 20. Thus, the above electrical device assembly 100 has good stability and anti-interference capability.

[0048] Alternatively, as shown in Figure 8, in an exemplary embodiment, the third connection portion 211 and the fourth connection portion 221 may each extend along the third direction. The plurality of first connection portions 111 and the plurality of second connection portions 121 are arranged in one-to-one correspondence, and the plurality of first connection portions 111 and the plurality of second connection portions 121 are each spaced apart along the third direction. The third connection portion 211 is connected to the plurality of first connection portions 111, the fourth connection portion 221 is connected to the plurality of second connection portions 121, and the third direction intersects both the first and second directions. In this embodiment, the multiple first connection portions 111 are spaced apart along the third direction, and the third connection portion 211 extends along the third direction, that is, the third connection portion 211 can be electrically connected to the multiple first connection portions 111 simultaneously, and similarly, the fourth connection portion 221 can be electrically connected to the multiple second connection portions 121 simultaneously.

[0049] In another exemplary embodiment, as shown in Figures 3 to 7, optionally, the number of multiple first connection portions 111, multiple second connection portions 121, multiple third connection portions 211, and multiple fourth connection portions 221 are the same, and all of the multiple first connection portions 111, multiple second connection portions 121, multiple third connection portions 211, and multiple fourth connection portions 221 are spaced apart along the third direction. Each first connection portion 111 is connected to a third connection portion 211, each second connection portion 121 is connected to a fourth connection portion 221, and the third direction intersects both the first and second directions.

[0050] In the above embodiment, as shown in Figure 3, optionally, the length of each first connection portion 111 in the third direction is the same as the length of the third connection portion 211 to which the first connection portion 111 is connected in the third direction, and as a result, the current flow region on the first connection portion 111 and the third connection portion 211 does not change abruptly, improving the stability of the current flow. Optionally, the length of each second connection portion 121 in the third direction may be the same as the length of the fourth connection portion 221 to which the second connection portion 121 is connected in the third direction, improving the stability of the current flowing between the second connection portion 121 and the fourth connection portion 221. Furthermore, the lengths of the first connection portion 111 and the third connection portion 211 in the third direction are the same, such that the inductances on the first connection portion 111 and the third connection portion 211 are the same. The lengths of the second connection portion 121 and the fourth connection portion 221 in the third direction are the same, such that the inductances on the second connection portion 121 and the fourth connection portion 221 are the same, promoting mutual cancellation of inductances and reducing stray inductance on the electrical device assembly 100.

[0051] Optionally, the lengths of the first connection portion 111 in the third direction, the second connection portion 121 in the third direction, the third connection portion 211 in the third direction, and the fourth connection portion 221 in the third direction may all be the same, further promoting the cancellation of stray inductance and improving the performance of the electrical device assembly 100.

[0052] Optionally, the electrical device assembly 100 may include a first insulating sheet 13 and a second insulating sheet 23, where at least a portion of the second insulating sheet 23 is positioned between a third connection portion 211 and a fourth connection portion 221. The projection of at least one of the first connection portion 111 and the second connection portion 121 on the first insulating sheet 13 is entirely within the first insulating sheet 13, and the projection of at least one of the third connection portion 211 and the fourth connection portion 221 on the second insulating sheet 23 is entirely within the second insulating sheet 23. In this embodiment, the electrical device assembly 100 ensures complete insulation between the first connection portion 111 and the second connection portion 121, and complete insulation between the third connection portion 211 and the fourth connection portion 221, thereby preventing the occurrence of short circuits inside the electrical device assembly 100, and as a result, the electrical device assembly 100 has good safety.

[0053] In the above embodiments, as shown in Figures 5, 7, and 10, optionally, the end of the first insulating sheet 13 furthest from the first electrical device body 1 extends between the third connection portion 211 and the fourth connection portion 221, and the first insulating sheet 13 and the second insulating sheet 23 are laminated in the second direction. Alternatively, the end of the second insulating sheet 23 furthest from the second electrical device body 2 may extend between the first connection portion 111 and the second connection portion 121, and the second insulating sheet 23 and the first insulating sheet 13 are laminated in the second direction. That is, the first insulating sheet 13 and the second insulating sheet 23 are laminated at least partially, thereby improving insulation performance and avoiding voltage-induced breakdown.

[0054] The electrical connection between the first electrical device 10 and the second electrical device 20 can be achieved in various ways. In the prior art, the connection terminals of the electrical device and the connection terminals of the external load device are typically connected by bolts. Bolt connections require the occupancy of some space on the connection terminals, thus presenting problems with large-sized connection terminals. Large-sized connection terminals result in longer current paths, thereby increasing the strength of the magnetic field generated by the current. To improve the stability of the motor controller 200, optionally, the first connection portion 111 and the third connection portion 211 may be connected by a fusion welding process, and the second connection portion 121 and the fourth connection portion 221 may be connected by a fusion welding process. Here, the fusion welding process means any process such as laser welding, ultrasonic welding, or high-energy particle welding, for example, a laser welding process may be used. The present disclosure is not particularly limited in this regard.

[0055] Compared with conventional technical solutions, the electrical device assembly 100 in this embodiment can reduce the dimensions of the first connection portion 111, the second connection portion 121, the third connection portion 211, and the fourth connection portion 221 by eliminating the screw holes in each of them, thereby advantageously shortening the current path between the first electrical device 10 and the second electrical device 20, making the structure of the electrical device assembly 100 more compact, and improving the overall stability and anti-interference capability of the electrical device assembly 100 by suppressing the generation of stray inductance.

[0056] As an exemplary embodiment, as shown in Figures 3 to 5, optionally, to effectively improve the stability of the connection by using a face-to-face bonding connection manner, the end face of the first connection portion 111 furthest from the first electrical device body 1 can be aligned with the end face of the third connection portion 211 furthest from the second electrical device body 2, and the end face of the second connection portion 121 furthest from the first electrical device body 1 can be aligned with the end face of the fourth connection portion 221 furthest from the second electrical device body 2. The end faces of the first connection portion 111 furthest from the first electrical device body 1 and the end faces of the third connection portion 211 furthest from the second electrical device body 2 need to be as flat as possible in order to minimize the gap between the opposing surfaces. For example, the gap between the two end surfaces should not exceed 0.2 mm in order to improve the stability of the connection.

[0057] In the above embodiment, optionally, to ensure that the current does not change suddenly during the flow process, to improve the stability of the current flow, and to further improve the stability of the connection, the two surfaces of the first connection portion 111 facing each other along the second direction are each coplanar with the two surfaces of the third connection portion 211 facing each other along the second direction, and the two surfaces of the second connection portion 121 facing each other along the second direction are each coplanar with the two surfaces of the fourth connection portion 221 facing each other along the second direction.

[0058] In another exemplary embodiment, as shown in Figures 6 and 7, optionally, the end of the first connection portion 111 furthest from the first electrical device body 1 overlaps with the end of the third connection portion 211 furthest from the second electrical device body 2, and the end of the second connection portion 121 furthest from the first electrical device body 1 overlaps with the end of the fourth connection portion 221 furthest from the second electrical device body 2.

[0059] For current stability, optionally, the overlapping region of the first connection portion 111 and the third connection portion 211 has a length of 2 mm to 8 mm in the first direction, and the overlapping region of the second connection portion 121 and the fourth connection portion 221 has a length of 2 mm to 8 mm in the first direction. In this embodiment, the current flow between the first connection portion 111 and the third connection portion 211, and the current flow between the second connection portion 121 and the fourth connection portion 221 are stable, and working space can be ensured for the melting process between the first connection portion 111 and the third connection portion 211 and between the second connection portion 121 and the fourth connection portion 221.

[0060] In yet another exemplary embodiment, as shown in Figures 8 to 11, optionally, a gap 3 exists between the end of a first connection portion 111 furthest from the first electrical device body 1 and the end of a third connection portion 211 furthest from the second electrical device body 2. The gap 3 is configured to at least partially expose the connection between the second connection portion 121 and the fourth connection portion 221, and the assembly of the first electrical device 10 and the second electrical device 20 further includes an intermediate connecting piece 4, one end of which is connected to the first connection portion 111 and the other end of which is connected to the third connection portion 211.

[0061] In the above embodiment, a gap 3 exists between the end of the first connection portion 111, which is farther from the first electrical device body 1, and the end of the third connection portion 211, which is farther from the second electrical device body 2. Therefore, the energy source for the melting process can scan downwards from above the first connection portion 111 and the third connection portion 211, and can scan through the gap 3 to the connection between the second connection portion 121 and the fourth connection portion 221. After the melting process of the connection between the second connection portion 121 and the fourth connection portion 221, there is no need to make large adjustments or changes to the position of the electrical device assembly 100 or the energy source, and the melting process between the intermediate connection piece 4 and the first connection portion 111 and the third connection portion, respectively, can be achieved. As can be seen, the above embodiment provides an electrical device assembly 100 that is convenient to process. The fused connection between the second connection portion 121 and the fourth connection portion 221, as well as the fused connection between the intermediate connection piece 4 and the first connection portion 111 and the third connection portion, can be achieved without requiring large-scale adjustments or changes to the position of the electrical device assembly 100 or the energy source, thereby simplifying the processing process and increasing production efficiency.

[0062] As shown in Figures 10 and 11, optionally, the intermediate connecting piece 4 may be positioned on the side of the first connecting portion 111 and the third connecting portion 211, facing away from the second connecting portion 121 and the fourth connecting portion 221. The intermediate connecting piece 4 includes a U-shaped body portion 41, a first overlapping portion 42, and a second overlapping portion 43, the opening of which faces the gap 3, and the U-shaped body portion 41 includes a first side wall 411 and a second side wall 412 positioned opposite each other. One end of the first overlapping portion 42 is connected to the first side wall 411, and the other end is used to overlap with the first connecting portion 111, and the inner side wall of the first side wall 411 is coplanar with the end face of the end of the first connecting portion 111 furthest from the first electrical device body 1. One end of the second overlapping portion 43 is connected to the second side wall 412, and the other end is used to overlap with the third connection portion 211. The inner side wall of the second side wall 412 is coplanar with the end face of the end of the third connection portion 211 that is furthest from the second electrical device body 2.

[0063] In the above embodiment, the inner side wall of the first side wall 411 is coplanar with the end face of the end of the first connection portion 111 furthest from the first electrical device body 1, and the inner side wall of the second side wall 412 is coplanar with the end face of the end of the third connection portion 211 furthest from the second electrical device body 2. This facilitates the operator's positioning of the first connection portion 111 and the first overlapping portion 42, and the second overlapping portion 43 and the third connection portion 211, respectively, ensuring that the energy source for the melting process can scan the overlapping region of the first connection portion 111 and the first overlapping portion 42, and the overlapping region of the second overlapping portion 43 and the third connection portion 211. This prevents the energy source from scanning non-overlapping areas and causing damage to the first connection portion 111 or the third connection portion 211, thus ensuring the accuracy and safety of the process.

[0064] As shown in Figure 12, a third aspect of the present disclosure provides a motor controller 200 including the above-described electrical device assembly 100, wherein one of the first electrical device 10 and the second electrical device 20 is a capacitor, and the other of the first electrical device 10 and the second electrical device 20 is a power device, the capacitor being for electrical connection to a power battery.

[0065] A fourth aspect of this disclosure provides a vehicle 300 including the above-described electrical device assembly 100. As shown in Figure 13, the vehicle 300 may include the above-described motor controller 200. The vehicle 300 in this specification may be an electric vehicle, a hybrid vehicle, a new energy vehicle, etc. The disclosure is not particularly limited in this respect. The motor controller 200 provided by one embodiment of this disclosure has the advantages of strong anti-interference capability and high stability, so that the operator can facilitate the detection of current in a capacitor or power device, and the vehicle 300 using the above-described motor controller 200 can have good stability and safety.

[0066] While preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, the present disclosure is not limited to the specific details of the embodiments described above, and many simple modifications may be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, all of which fall within the scope of the present disclosure.

[0067] It should be noted that each of the specific technical features described in the embodiments for carrying out the above invention can be combined in any suitable manner, provided they do not contradict each other, and that, in order to avoid unnecessary repetition, the present disclosure does not specifically describe various possible combinations.

[0068] In addition, any combination of the various different embodiments of this disclosure may be made, as long as it does not deviate from the concept of this disclosure, and such combinations should be considered in the same way as those disclosed herein.

Claims

1. The first electrical device body (1) and A first connection terminal (11) having a first connection portion (111) that protrudes from the first electrical device body (1) along a first direction, A second connection terminal (12) having a second connection portion (121) protruding from the first electrical device body (1) along the first direction, wherein the first connection portion (111) and the second connection portion (121) are arranged in a stack along the second direction, and the second direction intersects the first direction, Equipped with, An electrical device (101) having multiple first connection parts (111) and multiple second connection parts (121), wherein the multiple first connection parts (111) and multiple second connection parts (121) are arranged at intervals.

2. The electrical device (101) according to claim 1, wherein the length of the first connection portion (111) in the third direction is equal to the length of the second connection portion (121) in the third direction, and the third direction intersects the first direction and the second direction.

3. The electrical device (101) according to claim 1 or 2, wherein the length of one of the first connecting portion (111) and the second connecting portion (121) in the first direction is greater than the length of the other of the first connecting portion (111) and the second connecting portion (121) in the first direction.

4. The electrical device (101) according to any one of claims 1 to 3, wherein the distance between the first connection portion (111) and the second connection portion (121) in the second direction is 1 mm or less.

5. The electrical device (101) according to any one of claims 1 to 4, further comprising a first insulating sheet (13), at least a portion of the first insulating sheet (13) being positioned between the first connecting portion (111) and the second connecting portion (121), wherein there are a plurality of first insulating sheets (13), and the plurality of first insulating sheets (13) are arranged in a stacked manner along the second direction.

6. An electrical device assembly (100) comprising a first electrical device (10) and a second electrical device (20), wherein the first electrical device (10) is electrically connected to the second electrical device (20), and at least one of the first electrical device (10) and the second electrical device (20) is an electrical device (101) according to any one of claims 1 to 5.

7. The first electrical device (10) is the electrical device (101) described in any one of claims 1 to 5, and the second electrical device (20) is The second electrical device body (2) and A third connection terminal (21) having a third connection portion (211) that protrudes from the second electrical device body (2) along the first direction, A fourth connection terminal (22) having a fourth connection portion (221) protruding from the second electrical device body (2) along the first direction, wherein the third connection portion (211) and the fourth connection portion (221) are arranged stacked in the second direction, Equipped with, The electrical device assembly (100) according to claim 6, wherein the first connection portion (111) is connected to the third connection portion (211), and the second connection portion (121) is connected to the fourth connection portion (221).

8. The electrical device assembly (100) according to claim 7, wherein the third connection portion (211) and the fourth connection portion (221) each extend along the third direction, the plurality of first connection portions (111) and the plurality of second connection portions (121) are arranged in one-to-one correspondence, the plurality of first connection portions (111) and the plurality of second connection portions (121) are each spaced apart along the third direction, the third connection portion (211) is connected to the plurality of first connection portions (111), the fourth connection portion (221) is connected to the plurality of second connection portions (121), and the third direction intersects both the first direction and the second direction.

9. The electrical device assembly (100) according to claim 7 or 8, wherein the number of the first connection portion (111), the second connection portion (121), the third connection portion (211), and the fourth connection portion (221) is the same, the plurality of first connection portions (111) are spaced apart along the third direction, the plurality of second connection portions (121) are spaced apart along the third direction, the plurality of third connection portions (211) are spaced apart along the third direction, the plurality of fourth connection portions (221) are spaced apart along the third direction, each first connection portion (111) is connected to one third connection portion (211), each second connection portion (121) is connected to one fourth connection portion (221), and the third direction intersects both the first direction and the second direction.

10. The electrical device assembly (100) according to claim 9, wherein the length of each of the first connecting portions (111) in the third direction is the same as the length of the third connecting portion (211) to which the first connecting portion (111) is connected in the third direction, and the length of each of the second connecting portions (121) in the third direction is the same as the length of the fourth connecting portion (221) to which the second connecting portion (121) is connected in the third direction.

11. The device further comprises a first insulating sheet (13) and a second insulating sheet (23), wherein at least a portion of the second insulating sheet (23) is positioned between the third connecting portion (211) and the fourth connecting portion (221). An electrical device assembly (100) according to any one of claims 7 to 10, wherein the projection of at least one of the first connection portion (111) and the second connection portion (121) on the first insulating sheet (13) is entirely within the first insulating sheet (13), and the projection of at least one of the third connection portion (211) and the fourth connection portion (221) on the second insulating sheet (23) is entirely within the second insulating strip (23).

12. The electrical device assembly (100) according to claim 11, wherein the end of the first insulating sheet (13) furthest from the first electrical device body (1) extends between the third connecting portion (211) and the fourth connecting portion (221) and is laminated with the second insulating sheet (23) along the second direction, and / or the end of the second insulating sheet (23) furthest from the second electrical device body (2) extends between the first connecting portion (111) and the second connecting portion (121) and is laminated with the first insulating sheet (13) along the second direction.

13. The electrical device assembly (100) according to any one of claims 7 to 12, wherein the end face of the first connection portion (111) furthest from the first electrical device body (1) aligns with the end face of the third connection portion (211) furthest from the second electrical device body (2), and the end face of the second connection portion (121) furthest from the first electrical device body (1) aligns with the end face of the fourth connection portion (221) furthest from the second electrical device body (2).

14. The electrical device assembly (100) according to claim 13, wherein two surfaces of the first connecting portion (111) facing each other along the second direction are each coplanar with two surfaces of the third connecting portion (211) facing each other along the second direction, and two surfaces of the second connecting portion (121) facing each other along the second direction are each coplanar with two surfaces of the fourth connecting portion (221) facing each other along the second direction.

15. An electrical device assembly (100) according to any one of claims 7 to 12, wherein the end of the first connection portion (111) furthest from the first electrical device body (1) overlaps with the end of the third connection portion (211) furthest from the second electrical device body (2), and the end of the second connection portion (121) furthest from the first electrical device body (1) overlaps with the end of the fourth connection portion (221) furthest from the second electrical device body (2).

16. The electrical device assembly (100) according to claim 15, wherein the overlapping region of the first connecting portion (111) and the third connecting portion (211) has a length of 2 mm to 8 mm in the first direction, and the overlapping region of the second connecting portion (121) and the fourth connecting portion (221) has a length of 2 mm to 8 mm in the first direction.

17. A gap (3) is provided between the end of the first connection portion (111) that is farther from the first electrical device body (1) and the end of the third connection portion (211) that is farther from the second electrical device body (2), and the gap (3) is configured to expose at least partially the connection portion between the second connection portion (121) and the fourth connection portion (221). The electrical device assembly (100) according to any one of claims 7 to 12, wherein the electrical device assembly (100) further comprises an intermediate connecting piece (4), one end of the intermediate connecting piece (4) is connected to the first connecting portion (111), and the other end of the intermediate connecting piece (4) is connected to the third connecting portion (211).

18. The intermediate connecting piece (4) is positioned on the side of the first connecting portion (111) and the third connecting portion (211) that faces the opposite side from the second connecting portion (121) and the fourth connecting portion (221), and the intermediate connecting portion (4) is The U-shaped main body portion (41) has an opening that faces the gap (3), and comprises a first side wall (411) and a second side wall (412) that are arranged facing each other, A first overlapping portion (42), wherein one end (42) is connected to the first side wall (411), and the other end is used to overlap with the first connection portion (111), and the inner side wall of the first side wall (411) is coplanar with the end face of the end of the first connection portion (111) that is farther from the first electrical device body (1), A second overlapping portion (43), one end of which is connected to the second side wall (412), and the other end of which is used to overlap with the third connection portion (211), wherein the inner side wall of the second side wall (412) is coplanar with the end face of the end of the third connection portion (211) that is farther from the second electrical device body (2), The electrical device assembly (100) according to claim 17, comprising the above.

19. A motor controller (200) comprising an electrical device assembly (100) according to any one of claims 6 to 18, wherein one of the first electrical device (10) and the second electrical device (20) is a capacitor, and the other of the first electrical device (10) and the second electrical device (20) is a power device, and the capacitor is for electrical connection to a power battery.

20. A vehicle (300) comprising the motor controller (200) described in claim 19.

Images