Retaining wall structure, inversion module, power unit, motor controller and driving equipment

Abstract

The utility model discloses a retaining wall structure, an inversion module, a power unit, a motor controller and driving equipment, and relates to the technical field of traffic transportation. The retaining wall structure comprises a connecting arm and at least two body retaining walls arranged on the connecting arm, the body retaining walls are arranged at intervals, and an included angle is formed between the wall faces of the body retaining walls and the arrangement direction of the body retaining walls. In the two body retaining walls, the first body retaining wall is used for extending into the first interval and being connected with the input terminal, and the second body retaining wall is used for extending into the second interval and being connected with the input terminal. According to the retaining wall structure, the retaining wall of the body can extend into the first interval, so that the risk of arc discharge can be reduced between the first input terminal and the second input terminal which form the first interval and are opposite in polarity; in addition, the retaining wall of the body is connected with the input terminal, so that the number of mounting structures on the corresponding inversion unit is reduced, and the mounting convenience of the retaining wall structure is improved.

Description

Technical Field

[0001] The present application relates to the field of transportation technology, and in particular to a retaining wall structure, an inverter module, a power unit, a motor controller and a driving device. Background Art

[0002] As new energy vehicles and other driving equipment have higher and higher requirements for high efficiency, miniaturization and high power density of motor controllers, more and more OEMs are developing high-voltage SiC module-type inverter modules (SiC modules, silicon carbide modules, used to convert DC current into AC current), and simultaneously locally integrating SiC modules with DC-link (DC support capacitors, used to filter the AC current generated by SiC modules and other types of inverter modules), and using laser welding solutions to reduce stray inductance and contact resistance, further improving product efficiency and power density.

[0003] During the use of the motor controller, arcing problems sometimes occur between the positive input terminal and the negative input terminal of the inverter module. Utility Model Content

[0004] The main purpose of this application is to propose a retaining wall structure to help reduce the risk of arcing.

[0005] To achieve the above-mentioned purpose, the retaining wall structure proposed in the present application is used for an inverter module, and the inverter module includes an inverter body and at least three input terminals arranged on the inverter body, and the input terminals are arranged at intervals; among the three input terminals, the first input terminal and the second input terminal have opposite polarities and form a first interval, and the second input terminal and the third input terminal form a second interval; the retaining wall structure includes a connecting arm and at least two body retaining walls arranged on the connecting arm, and the body retaining walls are arranged at intervals, and the wall surface of the body retaining wall forms an angle with the arrangement direction of the body retaining wall; among the two body retaining walls, the first body retaining wall is used to extend into the first interval and be used to connect the input terminals, and the second body retaining wall is used to extend into the second interval and be used to connect the input terminals.

[0006] Optionally, among the two body retaining walls, the wall surface of the first body retaining wall is used to abut against the first of the three input terminals, and the wall surface of the second body retaining wall is used to abut against the third of the three input terminals.

[0007] Optionally, the retaining wall structure also includes an abutment arm arranged on the connecting arm, and a buckle is provided at one end of the main retaining wall away from the connecting arm; along the direction away from the connecting arm, an accommodating space is formed between the buckle and the abutment arm, and the accommodating space is used to accommodate at least one of the input terminals; the buckle is used to abut one side of the input terminal, and the abutment arm is used to abut the other side of the input terminal.

[0008] Optionally, the abutment arm includes an inclined section and an abutment section, the inclined section is connected to the connecting arm, and one end of the inclined section away from the connecting arm is connected to the abutment section; the angle between the extension direction of the inclined section and the wall surface of the main body retaining wall is greater than 0 degrees and less than 90 degrees, and the inclined section extends in the direction toward the buckle; along the direction away from the connecting arm, the buckle and the abutment section are used to form the accommodating space.

[0009] Optionally, the arrangement direction of the main body retaining wall and the direction of the main body retaining wall away from the connecting arm form a virtual plane; the abutment arm is provided with a first through slot section, a second through slot section and a connecting through slot section, and the through direction of the first through slot section, the through direction of the second through slot section and the through direction of the connecting through slot section are respectively set to an angle less than 90 degrees with the virtual plane; the two ends of the connecting through slot section are respectively connected to the first through slot section and the second through slot section, and the first through slot section and the second through slot section are arranged opposite to each other.

[0010] Optionally, the first through-slot section, the second through-slot section and the connecting through-slot section are respectively arranged on the inclined section; and / or, the retaining wall structure also includes a connecting block, which is arranged between the abutment arm and the main body retaining wall, and the connecting blocks respectively connect the abutment arm and the main body retaining wall; and / or, the retaining wall structure also includes a pressing block, which is arranged on the side of the abutment arm facing away from the main body retaining wall; projected along the through-direction of the first through-slot section, at least part of the pressing block extends between the first through-slot section and the second through-slot section; and / or, the retaining wall structure includes at least two abutment arms, and the abutment arms are arranged one-to-one with the buckles on adjacent main body retaining walls.

[0011] Optionally, the retaining wall structure further includes a bending arm, which is arranged on a side of the connecting arm facing the main retaining wall, and two ends of the bending arm are respectively connected to the connecting arm.

[0012] Optionally, the retaining wall structure also includes a guide wall connected to the main retaining wall, and the angle between the wall surface of the guide wall and the arrangement direction of the main retaining wall is less than 90 degrees; the guide wall is used to extend into the card slot of the input terminal, and the card slot is arranged on the side of the input terminal facing the first interval or the side of the input terminal facing the second interval.

[0013] Optionally, the retaining wall structure also includes a guide wall connected to the main body retaining wall, and the angle between the wall surface of the guide wall and the arrangement direction of the main body retaining wall is less than 90 degrees; the guide wall is used to extend into the slot of the input terminal, and the slot is arranged on the side of the input terminal facing the first interval or the side of the input terminal facing the second interval; the guide wall and the buckle are arranged on the same side wall surface of the main body retaining wall, and the guide wall extends the buckle in a direction away from the connecting arm; or, the guide wall and the buckle are arranged on the opposite side wall surfaces of the main body retaining wall, and the guide wall extends the buckle in a direction away from the connecting arm; or, the guide wall and the buckle are arranged on the same side wall surface of the main body retaining wall, and the guide wall extends the buckle in a direction away from the other side wall surface of the main body retaining wall.

[0014] Optionally, the retaining wall structure also includes an extended retaining wall, and one end of the main retaining wall away from the connecting arm is connected to the extended retaining wall; the height direction of the main retaining wall is set along the direction away from the connecting arm, and the extended retaining wall extends out of the main retaining wall along at least one of the height direction of the main retaining wall and the width direction of the main retaining wall.

[0015] The present application also proposes an inverter module, which includes the above-mentioned retaining wall structure.

[0016] The present application also proposes a power unit, which includes an inverter module and a filter module. The inverter module includes the above-mentioned retaining wall structure, and the filter module has at least three output terminals, and the output terminals are connected to the input terminals in a one-to-one correspondence.

[0017] The present application also proposes a power unit, which includes an inverter module and a filter module, the inverter module includes the above-mentioned retaining wall structure, the filter module has at least three output terminals, and the output terminals are connected to the input terminals one by one; the filter module includes a filter body, and the filter body is stacked with the inverter body; projected along the stacking direction of the filter body and the inverter body, the output terminal includes an overhanging portion arranged on a side of the input terminal away from the inverter body; the input terminal is provided with the slot at one end away from the overhanging portion, and the power unit also includes at least three connecting conductors, which respectively abut the input terminal and the overhanging portion; a connecting gap is formed between at least one of the connecting conductors and the inverter body, the connecting gap is connected to the slot, and the guide wall passes through the connecting gap and is partially accommodated in the slot.

[0018] The present application also proposes a power unit, which includes an inverter module and a filter module, the inverter module includes the above-mentioned retaining wall structure, the filter module has at least three output terminals, and the output terminals are connected to the input terminals one by one; the filter module includes a filter body, and the filter body and the inverter body are stacked; projected along the stacking direction of the filter body and the inverter body, the output terminal includes an overhanging part arranged on the side of the input terminal away from the inverter body; a third interval is formed between the overhanging parts, the third interval is connected to the corresponding first interval, and the extended retaining wall extends into the third interval.

[0019] The present application also proposes a motor controller, which includes the above-mentioned power unit.

[0020] The present application also proposes a driving device, which includes the above-mentioned motor controller.

[0021] The technical solution of the present application is to set a retaining wall structure to include a connecting arm and at least two main body retaining walls arranged on the connecting arm, the main body retaining walls are arranged at intervals, and the wall surface of the main body retaining walls forms an angle with the arrangement direction of the main body retaining walls; among the two main body retaining walls, the first main body retaining wall is used to extend into the first interval between the input terminals and be used to connect the input terminals, and the second main body retaining wall is used to extend into the second interval between the input terminals and be used to connect the input terminals; the retaining wall structure can reduce the risk of arcing by extending the main body retaining wall into the first interval, between the first input terminal and the second input terminal with opposite polarities that form the first interval; in addition, the main body retaining wall is helpful in reducing the installation structure on the corresponding inverter unit by connecting the input terminals, which is helpful in improving the installation convenience of the retaining wall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 It is a three-dimensional structural diagram of an embodiment of a power unit in this application.

[0024] Figure 2 It is a top view of an embodiment of an inverter module in the present application.

[0025] Figure 3 It is a three-dimensional structural diagram of an embodiment of a filter module in this application.

[0026] Figure 4 for Figure 1 A partial enlarged view of point A in the middle.

[0027] Figure 5 It is a three-dimensional structural diagram of an embodiment of a retaining wall structure in this application.

[0028] Figure 6 It is a schematic diagram of the partial structure of an embodiment of a power unit in the present application.

[0029] Figure 7 FIG. 4 is another partial structural diagram of an embodiment of a power unit in the present application.

[0030] Description of Figure Numbers:

[0031] Label name Label name 100 Inverter module 110 Inverter 120 Input Terminals 121 First interval 122 Second interval 123 Card slot 200 Filter module 210 Filter body 220 Output Terminals 221 Outer part 222 The third interval 300 Retaining wall structure 310 Connecting arm 320 Body retaining wall 330 Abutment arm 331 Inclined section 332 Abutment section 333 First through groove section 334 The second through groove section 335 Connecting slot section 340 Buckle 350 Connection Block 360 Press block 370 Bending arm 380 Guide wall 390 Extend retaining wall 400 Connecting conductor 410 Connection interval

[0032] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0036] As new energy vehicles and other driving equipment have higher and higher requirements for high efficiency, miniaturization and high power density of motor controllers, more and more OEMs are developing high-voltage SiC module-type inverter modules (SiC modules, silicon carbide modules, used to convert DC current into AC current), and simultaneously locally integrating SiC modules with DC-link (DC support capacitors, used to filter the AC current generated by SiC modules and other types of inverter modules), and using laser welding solutions to reduce stray inductance and contact resistance, further improving product efficiency and power density.

[0037] During the use of the motor controller, arcing problems sometimes occur between the positive input terminal and the negative input terminal of the inverter module.

[0038] For the above motor controller, in order to reduce stray inductance and improve motor controller efficiency, the design between the positive input terminal and the negative input terminal of the inverter module such as SiC module is relatively compact; in the environment of parts transportation and assembly, small metal impurities may be introduced, thus causing arcing problems. It is expensive to absolutely remove the small metal impurities introduced.

[0039] Therefore, the present application proposes a retaining wall structure to help reduce the risk of arcing.

[0040] Reference Figure 1 , Figure 2 and Figure 3 In one embodiment of the present application, the retaining wall structure 300 is used for the inverter module 100, and the inverter module is used for the power unit. Specifically, the power unit may include the inverter module 100 and the filter module 200. Figure 2The inverter module 100 includes an inverter body 110 and at least three input terminals 120 disposed on the inverter body 110, and the input terminals 120 are arranged at intervals. Among the three input terminals 120, the first input terminal 120 and the second input terminal 120 have opposite polarities and form a first interval 121, and the second input terminal 120 and the third input terminal 120 form a second interval 122.

[0041] The inverter body 110 may include a corresponding inverter circuit and a first packaging structure for packaging the inverter circuit. The first packaging structure may be configured as a plastic package housing, etc. Figure 2 , the inverter module 100 may include three half-bridge type single-phase inverter sub-modules, for example, including three half-bridge type single-phase inverter sub-modules U, V, and W; wherein, referring to Figure 2 Each half-bridge type single-phase inverter sub-module of the inverter module 100 can be provided with three input terminals 120, such as the three input terminals of P (positive pole), N (negative pole), and P (positive pole) in the figure; among these three input terminals P, N, and P, the above-mentioned first interval 121 is formed between the P input terminal and the N input terminal, and the above-mentioned second interval 122 is formed between the N input terminal and another P input terminal.

[0042] Of course, each single-phase inverter submodule may also have only one P input terminal and one N input terminal. In this case, the P input terminal and the N input terminal of the single-phase inverter submodule form the first interval 121, and the N input terminal and the P input terminal or the N input terminal of another adjacent single-phase inverter submodule form the second interval 122. That is, the second interval 122 may be formed by two input terminals with opposite polarities or the same polarity.

[0043] In addition, refer to Figure 3 The filter module 200 includes a filter body 210, which may include a corresponding filter circuit and a second packaging structure for packaging the filter circuit. The filter module 200 has at least three output terminals 220, which are connected to the input terminals 120 in a one-to-one correspondence.

[0044] In addition, refer to Figure 4 and Figure 5 The retaining wall structure 300 includes a connecting arm 310 and at least two main retaining walls 320 disposed on the connecting arm 310. The main retaining walls 320 are arranged at intervals, and the wall surface of the main retaining wall 320 forms an angle with the arrangement direction of the main retaining wall 320; it can be understood that the angle is greater than 0 degrees and less than or equal to 90 degrees; for example, referring to Figure 5, the two main body retaining walls 320 are arranged at intervals along the X direction in the figure, and the wall surface of the main body retaining wall 320 is parallel to the YZ plane. At this time, the wall surface of the main body retaining wall 320 and the arrangement direction of the main body retaining wall 320 form an angle of 90 degrees, that is, they are arranged vertically. Of course, the wall surface of the main body retaining wall 320 and the arrangement direction of the main body retaining wall 320 can also form an angle of 80 degrees, 60 degrees, 40 degrees, etc., and this embodiment is not limited to this.

[0045] Reference Figure 4 , Figure 5 and Figure 6 Among the two body retaining walls 320, the first body retaining wall 320 is used to extend into the first interval 121 and is used to connect the input terminal 120. The body retaining wall 320 can be connected to the first or second of the three input terminals 120, for example, by abutting, bonding, snap connection, etc.; the second body retaining wall 320 is used to extend into the second interval 122 and is used to connect the input terminal 120. The body retaining wall 320 can be connected to the second or third of the three input terminals 120, for example, by abutting, bonding, snap connection, etc. The retaining wall structure 300 can be made of insulating materials such as plastic materials.

[0046] In this embodiment, the retaining wall structure 300 can reduce the risk of arcing by extending the main retaining wall 320 into the first interval 121, between the first input terminal 120 and the second input terminal 120 with opposite polarities that form the first interval 121; in addition, the main retaining wall 320 helps to reduce the installation structure on the corresponding inverter unit by connecting the input terminals 120, which helps to improve the installation convenience of the retaining wall structure 300.

[0047] In some embodiments, reference Figure 4 or Figure 6 In the two main body retaining walls 320, the wall surface of the first main body retaining wall 320 is used to abut the first of the three input terminals 120, and the wall surface of the second main body retaining wall 320 is used to abut the third of the three input terminals 120, which is beneficial to increase the span of the two main body retaining walls 320 and reduce the difficulty of preparing the retaining wall structure 300.

[0048] In some embodiments, reference Figure 5 and Figure 6 The retaining wall structure 300 also includes an abutting arm 330 disposed on the connecting arm 310, and a buckle 340 is provided at one end of the main retaining wall 320 away from the connecting arm 310. For example, a buckle 340 is provided at the lower end of the main retaining wall 320 in the figure; along the direction away from the connecting arm 310, an accommodation interval is formed between the buckle 340 and the abutting arm 330, and the accommodation interval is referred to as Figure 6The receiving space is used to receive at least one input terminal 120, the buckle 340 is used to abut against one side of the input terminal 120, and the abutting arm 330 is used to abut against the other side of the input terminal 120. Figure 6 , the accommodation interval is used to accommodate one input terminal 120, and the buckle 340 and the abutment arm 330 abut the same input terminal 120. Of course, the accommodation interval can also be used to accommodate two input terminals 120, for example, to accommodate the first input terminal 120 and the second input terminal 120, and the buckle 340 can abut the first input terminal 120, and the abutment arm 330 abuts the second input terminal 120, and this embodiment is not limited to this.

[0049] In this embodiment, the buckle 340 and the abutment arm 330 can be limited in a direction away from the connecting arm 310 , thereby improving the installation convenience and installation stability of the retaining wall structure 300 in a direction away from the connecting arm 310 .

[0050] Further, refer to Figure 5 and Figure 6 The abutting arm 330 may include an inclined section 331 and an abutting section 332, the inclined section 331 is connected to the connecting arm 310, and one end of the inclined section 331 away from the connecting arm 310 is connected to the abutting section 332; the angle between the extending direction of the inclined section 331 and the wall surface of the main body retaining wall 320 is greater than 0 degrees and less than 90 degrees, and the inclined section 331 extends in the direction toward the buckle 340; in the direction away from the connecting arm 310, the buckle 340 and the abutting section 332 are used to form a receiving space, and the receiving space is referred to Figure 6 Dimension H is shown in the figure.

[0051] In this embodiment, the overall length of the abutment arm 330 and the overall length of the main retaining wall 320 are relatively long, which is beneficial to improving the elasticity of the abutment arm 330 and the main retaining wall 320, reducing the plastic deformation of the abutment arm 330 and the main retaining wall 320, and is beneficial to improving the durability of the retaining wall structure 300.

[0052] In some embodiments, reference Figure 5, the arrangement direction of the main body retaining wall 320 (for example, parallel to the X direction in the figure) and the direction of the main body retaining wall 320 away from the connecting arm 310 (for example, parallel to the Z direction in the figure) form a virtual plane (for example, the virtual plane is parallel to the XZ plane in the figure); the abutting arm 330 is provided with a first through slot section 333, a second through slot section 334 and a connecting through slot section 335, and the through directions of the first through slot section 333, the second through slot section 334 and the connecting through slot section 335 are respectively set to an angle less than 90 degrees with the virtual plane, for example, respectively parallel to the virtual plane (parallel to the XZ plane in the figure); the two ends of the connecting through slot section 335 are respectively connected to the first through slot section 333 and the second through slot section 334, and the first through slot section 333 and the second through slot section 334 are arranged opposite to each other.

[0053] In this embodiment, the abutment arm 330 can form a solid part between the first through-slot section 333 and the second through-slot section 334 which are relatively arranged. The user can press the solid part to retract the buckle 340 to avoid the input terminal 120 during the installation process. The first through-slot section 333, the second through-slot section 334 and the connecting through-slot section 335 reduce the force required for the user to press, thereby improving the usability of the retaining wall structure 300.

[0054] In some embodiments, reference Figure 5 , the first through-slot section 333, the second through-slot section 334 and the connecting through-slot section 335 are respectively arranged on the inclined section 331. In addition, the retaining wall structure 300 may further include a connecting block 350, which is arranged between the abutting arm 330 and the main body retaining wall 320, and the connecting block 350 connects the abutting arm 330 and the main body retaining wall 320 respectively, so that the pressing force is more efficiently transmitted to the main body retaining wall 320 and the buckle 340. In addition, the retaining wall structure 300 may further include a pressing block 360, which is arranged on the side of the abutting arm 330 facing away from the main body retaining wall 320; projected along the through direction of the first through-slot section 333, at least part of the pressing block 360 extends between the first through-slot section 333 and the second through-slot section 334, thereby improving the convenience of the user in pressing. In addition, the retaining wall structure 300 may also include at least two abutment arms 330 , which are arranged one-to-one with the buckles 340 on the adjacent main retaining wall 320 , thereby increasing the installation attachment points of the retaining wall structure 300 and improving the installation stability of the retaining wall structure 300 .

[0055] In some embodiments, reference Figure 5 or Figure 6The retaining wall structure 300 further includes a bending arm 370, which is disposed on the side of the connecting arm 310 facing the main retaining wall 320, for example, on the lower side in the figure. Both ends of the bending arm 370 are respectively connected to the connecting arm 310, thereby improving the structural strength of the connecting arm 310 against the inward pressing force, which is conducive to improving the durability of the retaining wall structure 300. Figure 5 The bending arm 370 is configured to be V-shaped, and the bending arm 370 can also be configured to be U-shaped, etc., and this embodiment is not limited to this.

[0056] In some embodiments, reference Figure 5 and Figure 7 The retaining wall structure 300 further includes a guide wall 380 connected to the main retaining wall 320, and the angle between the wall surface of the guide wall 380 and the arrangement direction of the main retaining wall 320 is less than 90 degrees; for example, referring to Figure 5 , the wall surface of the guide wall 380 is parallel to the XZ plane, the arrangement direction of the main body retaining wall 320 is parallel to the X direction, and the angle between the wall surface of the guide wall 380 and the arrangement direction of the main body retaining wall 320 is 0 degrees. Of course, the angle between the wall surface of the guide wall 380 and the arrangement direction of the main body retaining wall 320 can also be set to 5 degrees, 10 degrees, 15 degrees or 20 degrees. Figure 7 The guide wall 380 is used to extend into the card slot 123 of the input terminal 120 , and the card slot 123 is arranged on a side of the input terminal 120 facing the first interval 121 or a side of the input terminal 120 facing the second interval 122 .

[0057] In this embodiment, the guide wall 380 can be used to limit the thickness direction of the guide wall 380 , thereby improving the installation convenience and installation stability of the retaining wall structure 300 in the direction away from the connecting arm 310 .

[0058] Among them, refer to Figure 5 The guide wall 380 and the buckle 340 can be arranged on the same side wall of the body retaining wall 320, and the guide wall 380 extends out of the buckle 340 in a direction away from the connecting arm 310, so that the guide wall 380 can guide the buckle 340 before it reaches the other side of the input terminal 120, for example, to Figure 6 The lower side of the input terminal 120 in the body is guided by the card slot 123 before, which is conducive to improving the installation convenience of the retaining wall structure 300. On this basis or separately, while the guide wall 380 and the buckle 340 are arranged on the same side wall of the body retaining wall 320, the guide wall 380 can be arranged to extend the buckle 340 in the direction away from the other side wall of the body retaining wall 320, thereby increasing the matching area of ​​the guide wall 380 for limiting in the thickness direction of the guide wall 380, further improving the installation stability; for example, Figure 5 The guide wall 380 on the middle left side extends leftward from the buckle 340 .

[0059] In some other embodiments, the guide wall 380 and the buckle 340 may be disposed on opposite side walls of the main body retaining wall 320 , and the guide wall 380 extends out of the buckle 340 in a direction away from the connecting arm 310 .

[0060] In some embodiments, reference Figure 5 , Figure 6 and Figure 7 The retaining wall structure 300 also includes an extended retaining wall 390, and one end of the main retaining wall 320 away from the connecting arm 310 is connected to the extended retaining wall 390; the height direction of the main retaining wall 320 is set in the direction away from the connecting arm 310, and the extended retaining wall 390 extends out of the main retaining wall 320 along at least one of the height direction of the main retaining wall 320 and the width direction of the main retaining wall 320; that is, the extended retaining wall 390 can extend out of the main retaining wall 320 along the height direction of the main retaining wall 320 or the width direction of the main retaining wall 320, and the extended retaining wall 390 can also extend out of the main retaining wall 320 along the height direction of the main retaining wall 320 and the width direction of the main retaining wall 320 at the same time (refer to Figure 5 ).

[0061] In this embodiment, extending the retaining wall 390 is beneficial to increasing the isolation area, which is beneficial to further reducing the risk of arcing.

[0062] The present application also provides an inverter module 100 , which includes the above-mentioned retaining wall structure 300 .

[0063] The present application also proposes a power unit, the power unit includes an inverter module 100 and a filter module 200, the inverter module 100 includes the above-mentioned retaining wall structure 300, the filter module 200 has at least three output terminals 220, and the output terminals 220 are connected to the input terminals 120 in a one-to-one correspondence; Figure 4 , Figure 6 and Figure 7The filter module 200 includes a filter body 210, which is stacked with the inverter body 110; projected along the stacking direction of the filter body 210 and the inverter body 110, the output terminal 220 includes an overhanging portion 221 arranged on the side of the input terminal 120 away from the inverter body 110; a card slot 123 is provided at one end of the input terminal 120 away from the overhanging portion 221, and the power unit also includes at least three connecting conductors 400, which are respectively corresponding to the input terminal 120 and the overhanging portion 221; a connecting interval 410 is formed between at least one connecting conductor 400 and the inverter body 110, and the connecting interval 410 is connected to the card slot 123, and the guide wall 380 passes through the connecting interval 410 and is partially accommodated in the card slot 123. Among them, the connecting conductor 400 can be set as a copper busbar, etc., and the connecting conductor 400 can be fixedly connected with the input terminal 120 and the overhanging portion 221 by welding or other methods.

[0064] In an embodiment, the connection spacer 410 can be disposed at an end of the connection conductor 400 , which is beneficial for improving the structural strength of the connection conductor 400 compared to being disposed in the middle.

[0065] In addition, a third interval 222 is formed between the above-mentioned protruding portions 221 . The third interval 222 is communicated with the corresponding first interval 121 , and the extending retaining wall 390 extends into the third interval 222 .

[0066] The present application also proposes a motor controller, which includes the above-mentioned power unit.

[0067] The present application also proposes a driving device, the driving device comprising the above motor controller, wherein the driving device may include at least one of a land vehicle and a flying vehicle.

[0068] It is understandable that since the inverter module, power unit, motor controller and driving equipment adopt all the technical solutions of all the above embodiments, they at least have all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0069] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A retaining wall structure, characterized in that: The retaining wall structure is used for an inverter module, and the inverter module includes an inverter body and at least three input terminals arranged on the inverter body, and the input terminals are arranged at intervals; among the three input terminals, the first input terminal and the second input terminal have opposite polarities and form a first interval, and the second input terminal and the third input terminal form a second interval; The retaining wall structure includes a connecting arm and at least two main body retaining walls arranged on the connecting arm, the main body retaining walls are arranged at intervals, and the wall surface of the main body retaining wall forms an angle with the arrangement direction of the main body retaining wall; among the two main body retaining walls, the first main body retaining wall is used to extend into the first interval and be used to connect the input terminal, and the second main body retaining wall is used to extend into the second interval and be used to connect the input terminal.

2. The retaining wall structure according to claim 1, characterized in that: Among the two body retaining walls, the wall surface of the first body retaining wall is used to abut against the first of the three input terminals, and the wall surface of the second body retaining wall is used to abut against the third of the three input terminals.

3. The retaining wall structure according to claim 1, characterized in that: The retaining wall structure also includes an abutment arm arranged on the connecting arm, and a buckle is provided at one end of the main retaining wall away from the connecting arm; along the direction away from the connecting arm, an accommodating space is formed between the buckle and the abutment arm, and the accommodating space is used to accommodate at least one of the input terminals; the buckle is used to abut one side of the input terminal, and the abutment arm is used to abut the other side of the input terminal.

4. The retaining wall structure according to claim 3, characterized in that: The abutment arm includes an inclined section and an abutment section, the inclined section is connected to the connecting arm, and one end of the inclined section away from the connecting arm is connected to the abutment section; the angle between the extension direction of the inclined section and the wall surface of the main body retaining wall is greater than 0 degrees and less than 90 degrees, and the inclined section extends in the direction toward the buckle; along the direction away from the connecting arm, the buckle and the abutment section are used to form the accommodating space.

5. The retaining wall structure according to claim 4, characterized in that: The arrangement direction of the main body retaining wall and the direction of the main body retaining wall away from the connecting arm form a virtual plane; The abutment arm is provided with a first through slot section, a second through slot section and a connecting through slot section, and the through directions of the first through slot section, the second through slot section and the connecting through slot section are respectively set to have an angle less than 90 degrees with the virtual plane; the two ends of the connecting through slot section are respectively connected to the first through slot section and the second through slot section, and the first through slot section is arranged opposite to the second through slot section.

6. The retaining wall structure according to claim 5, characterized in that: The first through-slot section, the second through-slot section and the connecting through-slot section are respectively arranged on the inclined section; and / or, The retaining wall structure further comprises a connecting block, which is arranged between the abutting arm and the main retaining wall, and the connecting block connects the abutting arm and the main retaining wall respectively; and / or, The retaining wall structure further includes a pressing block, which is arranged on a side of the abutting arm facing away from the retaining wall of the main body; projected along the through direction of the first through-slot section, at least part of the pressing block extends between the first through-slot section and the second through-slot section; and / or, The retaining wall structure includes at least two abutting arms, and the abutting arms are arranged in one-to-one correspondence with the buckles on the adjacent retaining walls of the main body.

7. The retaining wall structure according to any one of claims 4 to 6, characterized in that: The retaining wall structure further includes a bending arm, which is arranged on a side of the connecting arm facing the main retaining wall, and two ends of the bending arm are respectively connected to the connecting arm.

8. The retaining wall structure according to any one of claims 1 to 6, characterized in that: The retaining wall structure also includes a guide wall connected to the main retaining wall, and the angle between the wall surface of the guide wall and the arrangement direction of the main retaining wall is less than 90 degrees; the guide wall is used to extend into the card slot of the input terminal, and the card slot is arranged on the side of the input terminal facing the first interval or the side of the input terminal facing the second interval.

9. The retaining wall structure according to any one of claims 3 to 6, characterized in that: The retaining wall structure further includes a guide wall connected to the retaining wall of the main body, wherein the angle between the wall surface of the guide wall and the arrangement direction of the retaining wall of the main body is less than 90 degrees; the guide wall is used to extend into the card slot of the input terminal, and the card slot is arranged on the side of the input terminal facing the first interval or the side of the input terminal facing the second interval; The guide wall and the buckle are arranged on the same side wall of the main body retaining wall, and the guide wall extends out of the buckle in a direction away from the connecting arm; or, The guide wall and the buckle are arranged on the wall surfaces on the opposite sides of the main body retaining wall, and the guide wall extends out of the buckle in a direction away from the connecting arm; or, The guide wall and the buckle are arranged on the same side wall surface of the main body retaining wall, and the guide wall extends out of the buckle in a direction away from the other side wall surface of the main body retaining wall.

10. The retaining wall structure according to any one of claims 1 to 6, characterized in that: The retaining wall structure also includes an extended retaining wall, and one end of the main retaining wall away from the connecting arm is connected to the extended retaining wall; the height direction of the main retaining wall is set along the direction away from the connecting arm, and the extended retaining wall extends out of the main retaining wall along at least one of the height direction of the main retaining wall and the width direction of the main retaining wall.

11. An inverter module, characterized in that: The inverter module comprises the retaining wall structure according to any one of claims 1 to 10.

12. A power unit, characterized in that: The power unit includes an inverter module and a filter module, the inverter module includes the retaining wall structure according to any one of claims 1 to 10, and the filter module has at least three output terminals, and the output terminals are connected to the input terminals in a one-to-one correspondence.

13. A power unit, characterized in that: The power unit comprises an inverter module and a filter module, the inverter module comprises the retaining wall structure according to claim 8 or 9, the filter module has at least three output terminals, and the output terminals are connected to the input terminals in a one-to-one correspondence; The filter module comprises a filter body, and the filter body is stacked with the inverter body; when projected along the stacking direction of the filter body and the inverter body, the output terminal comprises an overhanging portion arranged on a side of the input terminal away from the inverter body; The slot is provided at one end of the input terminal away from the protruding part, and the power unit also includes at least three connecting conductors, which respectively correspond to the input terminal and the protruding part; a connecting gap is formed between at least one of the connecting conductors and the inverter body, and the connecting gap is connected to the slot, and the guide wall passes through the connecting gap and is partially accommodated in the slot.

14. A power unit, characterized in that: The power unit comprises an inverter module and a filter module, the inverter module comprises the retaining wall structure according to claim 10, the filter module has at least three output terminals, and the output terminals are connected to the input terminals in a one-to-one correspondence; The filter module comprises a filter body, and the filter body is stacked with the inverter body; when projected along the stacking direction of the filter body and the inverter body, the output terminal comprises an overhanging portion arranged on a side of the input terminal away from the inverter body; A third interval is formed between the protruding parts, the third interval is communicated with the corresponding first interval, and the extended retaining wall extends into the third interval.

15. A motor controller, characterized in that: The motor controller comprises a power unit as claimed in any one of claims 12 to 14.

16. A traveling device, characterized in that: The traveling device includes the motor controller as claimed in claim 15 .

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