Power module, motor controller and vehicle

Abstract

The invention discloses a power module, a motor controller and a vehicle, the power module comprises a substrate and a power terminal, the power terminal is arranged on one side of the substrate in the thickness direction, the orthographic projection of the power terminal in the direction towards the substrate covers a part of the substrate, and the orthographic projection of the power terminal in the direction towards the substrate covers a part of the substrate. The end faces, close to the substrate, of the power terminals are electrically connected with the substrate, and the end faces, away from the substrate, of the power terminals are used for being electrically connected with matching parts. According to the power module disclosed by the invention, the power terminal is arranged on one side of the thickness direction of the substrate, and the orthographic projection of the power terminal in the direction towards the substrate covers one part of the substrate, so that the power terminal can be prevented from extending out of the substrate in the length direction and the width direction of the substrate, and the length or the width of the power module can be reduced; the size of the power module is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motor controllers, and in particular to a power module, a motor controller and a vehicle. Background Art

[0002] As the efficiency and power density of motor controllers are getting higher and higher, the maximum operating voltage of the power module of the motor controller is getting higher and higher, the current output capacity is getting larger and larger, while the size is getting smaller and smaller, and the stray inductance is getting smaller and smaller. The plastic-encapsulated power module has become the main solution for power module packaging design due to its small size, high power density, and low stray inductance.

[0003] like Fig.14 and Fig.15 As shown, the power module includes a substrate 100, a power terminal 200 and a plastic package 300. The substrate 100 is encapsulated in the plastic package 300, a plastic package portion of the power terminal 200 is encapsulated in the plastic package 300 and electrically connected to the substrate 100, and the other plastic package portion of the power terminal 200 extends out of the plastic package 300 to be electrically connected to other components. In the related art, the power terminal 200 is a power copper bar, and the length direction of the power copper bar is consistent with the length direction or width direction of the substrate 100, one end of the power copper bar is encapsulated in the plastic package 300, and the other end of the power copper bar extends out of the plastic package 300, resulting in a longer overall length or width of the power module and a larger overall volume of the power module. Summary of the invention

[0004] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, an embodiment of the present disclosure provides a power module to reduce the overall volume of the power module.

[0006] The power module of the disclosed embodiment includes a substrate and a power terminal, wherein the power terminal is arranged on one side of the substrate in the thickness direction, and the orthographic projection of the power terminal in the direction toward the substrate covers a portion of the substrate. The end surface of the power terminal close to the substrate is electrically connected to the substrate, and the end surface of the power terminal away from the substrate is used for electrical connection with a matching component.

[0007] Optionally, the power terminal is a conductive block, and a thickness direction of the conductive block is consistent with a thickness direction of the substrate.

[0008] Optionally, the thickness of the conductive block is 2 mm to 5 mm.

[0009] Optionally, the power module further includes a plastic package, the substrate is packaged in the plastic package, and at least a portion of the power terminal is packaged in the plastic package.

[0010] Optionally, the plastic packaging body includes a first plastic packaging part and a second plastic packaging part, the second plastic packaging part protrudes from the first plastic packaging part in a direction away from the substrate, the substrate and a part of the power terminal are encapsulated in the first plastic packaging part, and another part of the power terminal is encapsulated in the second plastic packaging part.

[0011] Optionally, the end surface of the power terminal away from the first plastic encapsulation part is flush with the end surface of the second plastic encapsulation part away from the first plastic encapsulation part; or, the end surface of the power terminal away from the first plastic encapsulation part is higher than the end surface of the second plastic encapsulation part away from the first plastic encapsulation part.

[0012] Optionally, the power terminal includes a first side surface and a second side surface that are adjacently arranged, and the first side surface intersects with the second side surface.

[0013] Optionally, the orthographic projection of the power terminal in a direction toward the substrate is a polygon.

[0014] Optionally, the power terminal is prism-shaped.

[0015] Optionally, the orthographic projection of the power terminal in a direction toward the substrate is a rectangle, and a ratio of a long side to a short side of the rectangle is 1.5 to 6.5.

[0016] Optionally, a protrusion is provided on a side surface of the power terminal, and / or a groove is provided on a side surface of the power terminal.

[0017] Optionally, the protrusion is in a ring shape arranged around the circumference of the power terminal; and / or the groove is in a ring shape arranged around the circumference of the power terminal.

[0018] Optionally, there are a plurality of protrusions, and at least two of the protrusions are arranged at intervals along the thickness direction of the substrate; and / or there are a plurality of grooves, and at least two of the grooves are arranged at intervals along the thickness direction of the substrate.

[0019] Optionally, the power module further includes a signal terminal, wherein the signal terminal and the power terminal are arranged on the same side of the thickness direction of the substrate; an end of the signal terminal close to the substrate is electrically connected to the substrate, and an end of the power terminal away from the substrate is used to be electrically connected to the chip.

[0020] Optionally, the power module further includes a connecting block, which is arranged between the substrate and the signal terminal in the thickness direction of the substrate, and at least a portion of the connecting block is encapsulated in the plastic package; the connecting block is a conductive block, and the end surface of the connecting block close to the substrate is electrically connected to the substrate, and the end surface of the connecting block away from the substrate is electrically connected to the signal terminal.

[0021] Optionally, an end surface of the connecting block away from the substrate is higher than an end surface of the plastic package body away from the substrate.

[0022] Optionally, the power terminal is welded to the substrate.

[0023] Optionally, the power terminal is made of alloy.

[0024] Optionally, there are multiple power terminals, and the multiple power terminals are arranged at intervals around the edge of the substrate.

[0025] The present disclosure also provides a motor controller.

[0026] The motor controller disclosed in the present invention includes a power module, a connecting row and a matching component, wherein the power module is any one of the power modules described above; one end of the connecting row is electrically connected to the end surface of the power terminal away from the substrate; and the other end of the connecting row is electrically connected to the matching component.

[0027] Optionally, the number of the power terminals and the connection bars are both plural, the power terminals include input terminals and output terminals, the connection bars include input bars and output bars; the input bars are electrically connected to the input terminals, and the output bars are electrically connected to the output terminals.

[0028] Optionally, the number of the input terminals and the input rows are both multiple, the input terminals include a first pole terminal and a second pole terminal, the input rows include a first pole input row and a second pole input row, the first pole input row is electrically connected to the first pole terminal, and the second pole input row is electrically connected to the second pole terminal; wherein a portion of the orthographic projection of the first pole input row in the thickness direction toward the substrate covers a portion of the orthographic projection of the second pole input row in the thickness direction toward the substrate.

[0029] Optionally, the first pole input row includes a first main body, a first extension part and a second extension part, the first extension part and the second extension part are arranged on the same side of the first main body in the first direction and are both electrically connected to the first main body, the first extension part and the second extension part are arranged at intervals along the second direction, the first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the thickness direction of the substrate; the number of the first pole terminals is multiple, the first pole terminal includes a first terminal and a second terminal, the first terminal and the second terminal are arranged at intervals along the second direction, the first extension part is electrically connected to the first terminal, and the second extension part is electrically connected to the second terminal.

[0030] Optionally, the second pole input row includes a second main body and a third extension portion, the third extension portion is arranged on one side of the second main body in the first direction and is electrically connected to the second main body, and the third extension portion is electrically connected to the second pole terminal; at least a portion of the orthographic projection of the first main body in the thickness direction of the substrate covers at least a portion of the orthographic projection of the second main body in the thickness direction of the substrate.

[0031] Optionally, the second main body portion is arranged on a side of the first main body portion away from the substrate in the thickness direction of the substrate; the first extension portion and the second extension portion are bent in a direction toward the substrate, the second pole terminal is arranged between the first terminal and the second terminal in the second direction, and the third extension portion is arranged between the first extension portion and the second extension portion in the second direction.

[0032] Optionally, at least one of a surface of the first extending portion facing the substrate and a surface of the second extending portion facing the substrate is flush with a surface of the third extending portion facing the substrate.

[0033] Optionally, the input terminal and the output terminal are arranged on opposite sides of the substrate in a first direction, and the first direction is perpendicular to the thickness direction of the substrate; the input row and the output row are arranged on opposite sides of the substrate in the first direction.

[0034] Optionally, the connection bar is welded to the power terminal, and / or the connection bar is welded to the matching component.

[0035] The present disclosure also provides a vehicle.

[0036] The vehicle disclosed herein includes the motor controller described in any one of the above items.

[0037] The power module disclosed in the present invention can avoid the power terminal from extending out of the substrate in the length and width directions of the substrate by arranging the power terminal on one side of the substrate in the thickness direction, and the orthographic projection of the power terminal in the direction toward the substrate covers a part of the substrate, thereby reducing the length or width of the power module and reducing the volume of the power module. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a perspective view of a power module according to an embodiment of the present disclosure.

[0039] Figure 2 FIG. 4 is a partial cross-sectional view of a power module according to an embodiment of the present disclosure.

[0040] Figure 3 FIG. 4 is a perspective view of a power terminal of a power module according to an embodiment of the present disclosure.

[0041] Figure 4 FIG. 4 is a perspective view of a power terminal of a power module according to another embodiment of the present disclosure.

[0042] Figure 5 FIG. 4 is a perspective view of a power terminal of a power module according to yet another embodiment of the present disclosure.

[0043] Figure 6 FIG. 4 is a perspective view of a power terminal of a power module according to another embodiment of the present disclosure.

[0044] Figure 7 FIG. 4 is a perspective view of a power terminal of a power module according to another embodiment of the present disclosure.

[0045] Figure 8 FIG. 4 is a perspective view of a power terminal of a power module according to another embodiment of the present disclosure.

[0046] Fig. 9 This is a main view of the connection between the power module and the power copper busbar according to an embodiment of the present disclosure. Figure 1 .

[0047] Fig.10 This is a main view of the connection between the power module and the power copper busbar according to an embodiment of the present disclosure. Figure 1 .

[0048] Fig.11 yes Fig.10 AA view.

[0049] Fig.12 yes Fig.10 BB direction view.

[0050] Fig.13 FIG. 1 is an exploded view of the connection between a power module and a power copper busbar according to an embodiment of the present disclosure.

[0051] Fig.14 It is a front view of a power module in the related art.

[0052] Fig.15 yes Fig.14 CC view.

[0053] Reference numerals:

[0054] 10. Power module;

[0055] 1. substrate; 11. first copper cladding layer; 12. ceramic layer; 13. second copper cladding layer;

[0056] 2. power terminal; 21. input terminal; 211. first pole terminal; 2111. first terminal; 2112. second terminal; 212. second pole terminal; 22. output terminal; 2001. first end surface; 2002. second end surface; 2003. first side surface; 2004. second side surface; 2005. third side surface; 2006. protrusion; 2007. groove;

[0057] 3. Plastic sealing body; 31. First plastic sealing part; 32. Second plastic sealing part;

[0058] 4. Signal terminal;

[0059] 5. Solder layer;

[0060] 6. Connecting block;

[0061] 20, connecting row; 201, input row; 202, first pole input row; 2021, first main body; 2022, first extension; 2023, second extension; 203, second pole input row; 2031, second main body; 2032, third extension; 204, output row;

[0062] 100. Substrate;

[0063] 200, power terminal;

[0064] 300. Plastic sealing body. DETAILED DESCRIPTION

[0065] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0066] like Figure 1 and Figure 2 As shown, the power module 10 of the embodiment of the present disclosure includes a substrate 1 and a power terminal 2, wherein the power terminal 2 is arranged on one side of the substrate 1 in the thickness direction, and the orthographic projection of the power terminal 2 in the direction toward the substrate 1 covers a part of the substrate 1. The end surface of the power terminal 2 close to the substrate 1 is electrically connected to the substrate 1, and the end surface of the power terminal 2 away from the substrate 1 is used to be electrically connected to a matching component. The matching component may be a capacitor.

[0067] The power module 10 of the embodiment of the present disclosure can avoid the power terminal 2 from extending out of the substrate 1 in the length and width directions of the substrate 1 by arranging the power terminal 2 on one side of the substrate 1 in the thickness direction, and the orthographic projection of the power terminal 2 in the direction toward the substrate 1 covers a part of the substrate 1, thereby reducing the length or width of the power module 10 and reducing the volume of the power module 10.

[0068] In order to make the technical solution of the present disclosure easier to understand, the technical solution of the present disclosure is further described below by taking the thickness direction of the substrate 1 as being consistent with the up-down direction. Figures 1 to 6 shown.

[0069] For example, Figure 1 and Figure 2 As shown, the power terminal 2 is arranged on the upper side of the substrate 1, and the downward projection of the power terminal 2 covers a part of the substrate 1. The lower end surface of the power terminal 2 is electrically connected to the substrate 1, and the upper end surface of the power terminal 2 is used to be electrically connected to the mating component.

[0070] Optionally, the substrate 1 is a ceramic copper clad laminate.

[0071] For example, Figure 2 As shown, the substrate 1 includes a first copper clad layer 11, a ceramic layer 12 and a second copper clad layer 13. The first copper clad layer 11 is arranged on the upper side of the ceramic layer 12, and the second copper clad layer 13 is arranged on the lower side of the ceramic layer 12. The power terminal 2 is arranged on the upper side of the first copper clad layer 11, and the lower end surface of the power terminal 2 is electrically connected to the first copper clad layer 11.

[0072] In the related art, the power terminal and the mating component are mostly connected by welding, for example, the power terminal and the mating component are welded by laser. The power terminal is usually a power copper busbar. When the power terminal and the mating component are welded, it is easy to burn through the power terminal, further burn the power module, cause the insulation failure of the power module, and result in poor connection reliability between the power module and the mating component.

[0073] In some embodiments, the power terminal 2 is a conductive block, and the thickness direction of the conductive block is consistent with the thickness direction of the substrate 1 .

[0074] By setting the power terminal 2 as a conductive block, the thickness of the conductive block is relatively large, so that when the power terminal 2 is electrically connected to the matching component, the power terminal 2 can be prevented from being burned through, thereby preventing the power module 10 from being burned, and improving the connection reliability between the power module 10 and the matching component.

[0075] Optionally, the thickness of the conductive block is 2 mm to 5 mm.

[0076] For example, Figure 2 As shown, the thickness of the conductive block is D, and D is 3 mm.

[0077] It can be understood that the greater the thickness of the conductive block, the less likely it is to burn through the power terminal 2 when the power terminal 2 is electrically connected to the mating component, and the better the connection reliability between the power module 10 and the mating component. However, the thickness of the power module 10 will also be greater and the cost will be higher. The smaller the thickness of the conductive block, the smaller the thickness of the power module 10 and the lower the cost. However, the easier it is to burn through the power terminal 2 when the power terminal 2 is electrically connected to the mating component, and the worse the connection reliability between the power module 10 and the mating component.

[0078] By setting the thickness of the conductive block to 2 mm to 5 mm, the connection reliability between the power module 10 and the mating component can be improved while the thickness of the power module 10 can be reduced and the cost of the power module 10 can be reduced.

[0079] Optionally, the power terminal 2 is welded to the substrate 1 .

[0080] For example, Figure 2 As shown, the power terminal 2 has a first end face 2001 and a second end face 2002 arranged opposite to each other along the thickness direction of the substrate 1, wherein the first end face 2001 is the lower end face of the power terminal 2, and the second end face 2002 is the upper end face of the power terminal 2. The first end face 2001 is welded to the substrate 1, and the second end face 2002 is used for welding to a matching component. The power terminal 2 and the substrate 1 can be welded through a solder layer 5. The solder layer 5 can be a system soldering tin solder, or a silver paste or copper paste used for sintering.

[0081] The welding of the power terminal 2 and the substrate 1 is beneficial to improving the connection reliability between the power terminal 2 and the substrate 1 , and is beneficial to improving the reliability of the power module 10 .

[0082] In the related art, when the power terminal adopts a power copper busbar, the entire power terminal is a cantilever structure. Regardless of whether the power terminal and the mating component are connected by welding or screws, the power terminal will be deformed to varying degrees due to the existence of assembly tolerances, etc., resulting in stress concentration problems at the junction of the power terminal and the plastic package, and ultimately causing the plastic package to crack easily at the junction with the power terminal, causing the power module to easily suffer from insulation failure problems.

[0083] In some embodiments, Figure 1 and Figure 2 As shown, the power module 10 further includes a plastic package 3 , the substrate 1 is packaged in the plastic package 3 , and at least a portion of the power terminal 2 is packaged in the plastic package 3 .

[0084] Among them, at least a part of the power terminal 2 is encapsulated in the plastic package 3, which can be understood as: a part of the power terminal 2 is encapsulated in the plastic package 3, and the other part of the power terminal 2 is located outside the plastic package 3; or, the power terminal 2 is encapsulated in the plastic package 3 as a whole.

[0085] By covering a portion of the substrate 1 with the orthographic projection of the power terminal 2 in the direction toward the substrate 1, at least a portion of the power terminal 2 is encapsulated in the plastic package 3, so that the stress concentration problem at the junction of the power terminal 2 and the plastic package can be avoided, and the risk of insulation failure of the power module 10 can be reduced. In addition, the plastic package 3 can also be used to indirectly realize the mechanical connection between the power terminal 2 and the substrate 1, thereby improving the connection reliability between the power terminal 2 and the substrate 1, and further improving the reliability of the power module 10.

[0086] Alternatively, if Figure 2 As shown, the plastic encapsulation body 3 includes a first plastic encapsulation portion 31 and a second plastic encapsulation portion 32, and the second plastic encapsulation portion 32 is arranged to protrude from the first plastic encapsulation portion 31 in a direction away from the substrate 1. The substrate 1 and a portion of the power terminal 2 are encapsulated in the first plastic encapsulation portion 31, and another portion of the power terminal 2 is encapsulated in the second plastic encapsulation portion 32.

[0087] For example, Figure 2 As shown, the second plastic encapsulation part 32 is arranged to protrude upward from the first plastic encapsulation part 31. The lower part of the substrate 1 and the power terminal 2 is encapsulated in the first plastic encapsulation part 31, and the upper part of the power terminal 2 is encapsulated in the second plastic encapsulation part 32.

[0088] It is understandable that the end surface of the power terminal 2 away from the substrate 1 will protrude from the substrate 1, so there is a difference between the height of the plastic encapsulation body 3 required for the substrate 1 and the height of the plastic encapsulation body 3 required for the power terminal 2. By setting the plastic encapsulation body 3 to include a first plastic encapsulation part 31 and a second plastic encapsulation part 32, the first plastic encapsulation part 31 is used to encapsulate a part of the substrate 1 and the power terminal 2, and the second plastic encapsulation part 32 is used to encapsulate another part of the power terminal 2, while achieving a good plastic encapsulation effect for the substrate 1 and the power terminal 2, the overall volume of the plastic encapsulation body 3 can be avoided to be large, thereby helping to reduce the cost of the power module 10.

[0089] Alternatively, if Figure 2 As shown, the end surface of the power terminal 2 away from the first plastic sealing portion 31 is flush with the end surface of the second plastic sealing portion 32 away from the first plastic sealing portion 31 .

[0090] For example, the upper end surface of the power terminal 2 is flush with the upper end surface of the second plastic sealing part 32 .

[0091] By setting the end surface of the power terminal 2 away from the first plastic sealing part 31 and the end surface of the second plastic sealing part 32 away from the first plastic sealing part 31 to be flush, the plastic sealing effect of the power terminal 2 can be improved while the second plastic sealing part 32 can be prevented from affecting the electrical connection between the power terminal 2 and the matching component, thereby improving the reliability of the power module 10.

[0092] In other embodiments, Figure 8 and Fig. 9As shown, the end surface of the power terminal 2 away from the first plastic sealing portion 31 is higher than the end surface of the second plastic sealing portion 32 away from the first plastic sealing portion 31 .

[0093] For example, the upper end surface of the power terminal 2 is higher than the upper end surface of the second plastic sealing part 32 .

[0094] By setting the end surface of the power terminal 2 away from the first plastic encapsulation part 31 higher than the end surface of the second plastic encapsulation part 32 away from the first plastic encapsulation part 31 , it is convenient to connect the power terminal 2 with the matching component, thereby facilitating the connection between the power module 10 and the matching component.

[0095] Alternatively, if Figure 4 and Figure 6 As shown, the power terminal 2 includes a first side surface 2003 and a second side surface 2004 that are adjacently arranged, and the first side surface 2003 intersects the second side surface 2004 .

[0096] By setting the first side surface 2003 and the second side surface 2004 of the power terminal 2 to intersect, the bonding force between the power terminal 2 and the plastic package 3 can be increased, the connection reliability between the power terminal 2 and the plastic package 3 can be improved, and the reliability of the power module 10 can be further improved.

[0097] Alternatively, if Figure 6 As shown, the power terminal 2 further includes a third side surface 2005 , the second side surface 2004 is disposed between the first side surface 2003 and the third side surface 2005 , and the second side surface 2004 intersects with the third side surface 2005 .

[0098] By setting the third side surface 2005 of the power terminal 2 to intersect with the second side surface 2004 , the bonding force between the power terminal 2 and the plastic package 3 is further increased, and the reliability of the power module 10 is further improved.

[0099] Alternatively, if Figures 4 to 8 As shown, the orthographic projection of the power terminal 2 in the direction toward the substrate 1 is a polygon.

[0100] For example, the orthographic projection of the power terminal 2 in the direction toward the substrate 1 is a triangle, a quadrilateral, a pentagon, a hexagon, or the like.

[0101] By setting the orthographic projection in the direction toward the substrate 1 to be a polygon, the bonding force between the power terminal 2 and the plastic package 3 can be further increased, and the reliability of the power module 10 can be further improved.

[0102] Of course, in other embodiments, such as Figure 3 As shown, the outer side surface of the power terminal 2 may also be a cylindrical surface. In this case, the orthographic projection of the power terminal 2 in the direction toward the substrate 1 is a circle.

[0103] Alternatively, if Figure 7 and Figure 8 As shown, the orthographic projection of the power terminal 2 in the direction toward the substrate 1 is a rectangle, and the ratio of the long side to the short side of the rectangle is 1.5 to 6.5.

[0104] For example, Figure 7 and Figure 8 As shown, the orthographic projection of the first side surface 2003 in the direction toward the substrate 1 is the short side, the orthographic projection of the second side surface 2004 in the direction toward the substrate 1 is the long side, and the ratio of the long side to the short side is 4.

[0105] By setting the orthographic projection of the power terminal 2 in the direction toward the substrate 1 to be a rectangle, the processing and manufacturing of the power terminal 2 is facilitated. By setting the ratio of the long side to the short side of the rectangle to 1.5 to 6.5, the connection reliability between the power terminal 2 and the matching component can be ensured when the width of the power terminal 2 is narrow.

[0106] Alternatively, if Figures 4 to 8 As shown, the power terminal 2 is prismatic.

[0107] For example, the power terminal 2 is in the shape of a prism such as a quadrangular prism, a triangular prism, or a hexagonal prism.

[0108] By setting the power terminal 2 to be in a prism shape, the processing and manufacturing of the power terminal 2 is facilitated, which is beneficial to reducing the cost of the power module 10 .

[0109] Alternatively, if Figure 7 As shown, a protrusion 2006 is provided on the side of the power terminal 2 .

[0110] By setting a protrusion 2006 on the side of the power terminal 2, the contact area between the power terminal 2 and the plastic package 3 can be increased, the bonding force between the power terminal 2 and the plastic package 3 can be increased, the connection reliability between the power terminal 2 and the plastic package 3 can be improved, and the reliability of the power module 10 can be improved.

[0111] Alternatively, if Figure 7 As shown, the protrusion 2006 is in a ring shape and is arranged around the circumference of the power terminal 2.

[0112] For example, Figure 7 As shown, the protrusion 2006 is an annular boss.

[0113] By configuring the protrusion 2006 to be in a ring shape that is circumferentially arranged around the power terminal 2 , the bonding force between the power terminal 2 and the plastic package body 3 can be further increased, thereby improving the reliability of the power module 10 .

[0114] Alternatively, if Figure 7 As shown, there are multiple protrusions 2006 , and at least two protrusions 2006 are arranged at intervals along the thickness direction of the substrate 1 .

[0115] For example, Figure 7 As shown, there are two protrusions 2006 , which are arranged at intervals in the up-down direction, and a groove is formed between the two protrusions 2006 .

[0116] By setting the number of protrusions 2006 to be multiple, with at least two protrusions 2006 spaced apart in the thickness direction of the substrate 1 , the bonding force between the power terminal 2 and the plastic package 3 can be further increased, thereby improving the reliability of the power module 10 .

[0117] Alternatively, if Figure 8 As shown, a groove 2007 is provided on the side of the power terminal 2 .

[0118] By setting a groove 2007 on the side of the power terminal 2, the contact area between the power terminal 2 and the plastic package 3 can be increased, the bonding force between the power terminal 2 and the plastic package 3 can be increased, the connection reliability between the power terminal 2 and the plastic package 3 can be improved, and the reliability of the power module 10 can be improved.

[0119] Alternatively, if Figure 8 As shown, the groove 2007 is in a ring shape and is arranged around the circumference of the power terminal 2 .

[0120] For example, Figure 7 As shown, the groove 2007 is an annular boss.

[0121] By configuring the groove 2007 to be in a ring shape that is circumferentially arranged around the power terminal 2 , the bonding force between the power terminal 2 and the plastic package 3 can be further increased, thereby improving the reliability of the power module 10 .

[0122] Alternatively, if Figure 8 As shown, there are multiple grooves 2007 , and at least two grooves 2007 are arranged at intervals along the thickness direction of the substrate 1 .

[0123] For example, Figure 8 As shown, there are two grooves 2007 , which are arranged at intervals along the up-down direction, and a groove is formed between the two grooves 2007 .

[0124] By setting the number of the grooves 2007 to be multiple, with at least two grooves 2007 spaced apart along the thickness direction of the substrate 1 , the bonding force between the power terminal 2 and the plastic package 3 can be further increased, thereby improving the reliability of the power module 10 .

[0125] In the related technology, the power terminal uses a power copper busbar. The overall structure of the power copper busbar is complex and can only be made of pure copper, which leads to a large difference in the expansion coefficient between the power terminal and the plastic package. During the operation of the power module, the power terminal and the plastic package will experience repeated high and low temperature changes, which can easily cause cracking problems at the connection between the power terminal and the plastic package, thereby causing insulation failure of the power module.

[0126] Optionally, the power terminal 2 is made of alloy.

[0127] Alternatively, if Figure 1 As shown, there are multiple power terminals 2 , and the multiple power terminals 2 are arranged at intervals around the edge of the substrate 1 .

[0128] For example, Figure 1 As shown, the number of the power terminals 2 is four, and the four power terminals 2 are arranged at intervals around the edge of the substrate 1 .

[0129] By arranging the power terminals 2 around the edge of the substrate 1 , it is convenient to connect the power terminals 2 with the mating components, thereby facilitating the connection of the power module 10 with the mating components.

[0130] Optionally, the power module 10 further includes a signal terminal 4, and the signal terminal 4 and the power terminal 2 are arranged on the same side in the thickness direction of the substrate 1. The end of the signal terminal 4 close to the substrate 1 is electrically connected to the substrate 1, and the end of the power terminal 2 away from the substrate 1 is used to be electrically connected to the chip.

[0131] The end of the signal terminal 4 away from the substrate 1 is used to connect with a semiconductor chip (eg, an IGBT chip), so that a control signal is input to the semiconductor chip through the signal terminal 4 .

[0132] For example, Figure 1 As shown, the signal terminals 4 and the power terminals 2 are both arranged on the upper side of the substrate 1 .

[0133] By arranging the signal terminal 4 and the power terminal 2 on the same side of the substrate 1 in the thickness direction, the wiring operation between the power module 10 and the mating component and between the power module 10 and the chip is facilitated, thereby improving the installation efficiency of the power module 10 .

[0134] Optionally, the signal terminal 4 is a signal pin.

[0135] For example, the signal terminal 4 is a spring signal pin.

[0136] In the related art, a hole is opened on the substrate, a signal terminal is inserted into the hole of the substrate, and the signal terminal is welded to the substrate to achieve electrical connection between the signal terminal and the substrate. Due to manufacturing tolerances between the signal terminal and the hole on the substrate, stress exists between the signal terminal and the substrate, which in turn makes it easy for the connection between the signal terminal and the plastic package to crack, resulting in insulation failure of the power module.

[0137] like Fig.12As shown, the power module 10 further includes a connection block 6, which is arranged between the substrate 1 and the signal terminal 4 in the thickness direction of the substrate 1, and at least a portion of the connection block 6 is encapsulated in the plastic package 3. The connection block 6 is a conductive block, and the end surface of the connection block 6 close to the substrate 1 is electrically connected to the substrate 1, and the end surface of the connection block 6 away from the substrate 1 is electrically connected to the signal terminal 4.

[0138] For example, Fig.12 As shown, the connection block 6 is arranged on the upper side of the substrate 1 , the signal terminal 4 is arranged on the upper side of the connection block 6 , the lower end surface of the connection block 6 is electrically connected to the substrate 1 , and the upper end surface of the connection block 6 is electrically connected to the signal terminal 4 .

[0139] By providing the connection block 6, the signal terminal 4 is electrically connected to the substrate 1 through the connection block 6, which can avoid opening a hole on the substrate 1, thereby reducing the stress at the connection between the signal terminal 4 and the substrate 1, reducing the risk of cracking of the plastic package 3, and improving the insulation reliability of the power module 10.

[0140] Alternatively, if Fig.12 As shown, the end surface of the connecting block 6 away from the substrate 1 is higher than the end surface of the plastic package body 3 away from the substrate 1 .

[0141] For example, Fig.12 As shown, the upper end surface of the connection block 6 is higher than the upper end surface of the plastic package body 3 , and the upper end surface of the connection block 6 is electrically connected to the signal terminal 4 .

[0142] By setting the end surface of the connection block 6 away from the substrate 1 to be higher than the end surface of the plastic package body 3 away from the substrate 1 , the signal terminal 4 is conveniently electrically connected to the connection block 6 .

[0143] The power module 10 of the embodiment of the present disclosure has a simple structure of the power terminal 2, which is easy to form and has good processability, so that there are more choices for the material of the power terminal 2. For example, a copper-molybdenum alloy material or other material with a coefficient of expansion close to the plastic package 3 can be used to reduce the risk of cracking at the connection between the power terminal 2 and the plastic package 3, thereby reducing the risk of insulation failure of the power module 10.

[0144] like Figures 9 to 13 As shown, the motor controller of the embodiment of the present disclosure includes a power module 10, a connection row 20 and a matching component, the power module 10 is the power module 10 described in any of the above embodiments, one end of the connection row 20 is electrically connected to the end face of the power terminal 2 away from the substrate 1, and the other end of the connection row 20 is electrically connected to the matching component. Among them, the matching component can be a capacitor.

[0145] Since the power module 10 of the embodiment of the present disclosure is relatively small in size, the motor controller of the embodiment of the present disclosure is also relatively small in size.

[0146] In other embodiments, the power module 10 may also be used in other devices of the power module 10 that use a current inversion function, such as a photovoltaic inverter, a high-voltage inverter, and the like.

[0147] Optionally, the connection bar 20 is welded to the power terminal 2 .

[0148] For example, the connection bar 20 and the power terminal 2 are welded by laser.

[0149] The connection bar 20 is welded to the power terminal 2 , which can improve the connection reliability between the connection bar 20 and the power terminal 2 , thereby improving the connection reliability between the power module 10 and the mating component.

[0150] Optionally, the connecting bar 20 is welded to the mating component.

[0151] For example, the connection bar 20 and the mating component are welded by laser.

[0152] The connection bar 20 is welded to the mating component, which can improve the connection reliability between the connection bar 20 and the mating component, thereby improving the connection reliability between the power module 10 and the mating component.

[0153] Alternatively, if Figures 9 to 13 As shown, there are multiple power terminals 2 and connection bars 20. The power terminals 2 include input terminals 21 and output terminals 22. The connection bars 20 include input bars 201 and output bars 204. The input bars 201 are electrically connected to the input terminals 21, and the output bars 204 are electrically connected to the output terminals 22.

[0154] Alternatively, if Figures 9 to 13 As shown, the number of input terminals 21 and input row 201 are both multiple, the input terminal 21 includes a first pole terminal 211 and a second pole terminal 212, the input row 201 includes a first pole input row 202 and a second pole input row 203, the first pole input row 202 is electrically connected to the first pole terminal 211, and the second pole input row 203 is electrically connected to the second pole terminal 212. A part of the orthographic projection of the first pole input row 202 in the thickness direction toward the substrate 1 covers a part of the orthographic projection of the second pole input row 203 in the thickness direction toward the substrate 1.

[0155] Among them, one of the first pole terminal 211 and the second pole terminal 212 is a positive pole terminal, the other of the first pole terminal 211 and the second pole terminal 212 is a negative pole terminal, one of the first pole input row 202 and the second pole input row 203 is a positive pole input row 201, and the other of the first pole input row 202 and the second pole input row 203 is a negative pole input row 201.

[0156] For example, the first pole terminal 211 is a positive pole terminal, the second pole terminal 212 is a negative pole terminal, the first pole input row 202 is a positive pole input row, and the second pole input row 203 is a negative pole input row. Fig.13 As shown, the current directions of the first pole input row 202 and the second pole input row 203 are opposite.

[0157] By covering a part of the orthographic projection of the first pole input row 202 in the thickness direction toward the substrate 1 with a part of the orthographic projection of the second pole input row 203 in the thickness direction toward the substrate 1, since the current directions of the first pole input row 202 and the second pole input row 203 are opposite (the current direction of the first pole input row 202 is as shown in FIG. Fig.13 As shown by the arrow D1 in FIG. 1 , the current direction of the second pole input row 203 is as follows: Fig.13 As shown by the arrow D2 in FIG. 1 , the stray inductance between the first pole input row 202 and the second pole input row 203 can be significantly reduced, and the equivalent series inductance (ESL) of the motor controller can be reduced, thereby enabling the motor controller to operate at a higher voltage.

[0158] Alternatively, if Fig.10 and Fig.11 As shown, the first pole input row 202 includes a first main body 2021, a first extension 2022 and a second extension 2023, and the first extension 2022 and the second extension 2023 are arranged on the same side of the first main body 2021 in the first direction and are both electrically connected to the first main body 2021. There are multiple first pole terminals 211, and the first pole terminal 211 includes a first terminal 2111 and a second terminal 2112. The first extension 2022 and the second extension 2023 are arranged at intervals along the second direction, and the first terminal 2111 and the second terminal 2112 are arranged at intervals along the second direction. Among them, the first extension 2022 is electrically connected to the first terminal 2111, and the second extension 2023 is electrically connected to the second terminal 2112. The first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the thickness direction of the substrate 1.

[0159] By configuring the first pole input row 202 to include a first main body portion 2021, a first extension portion 2022 and a second extension portion 2023, configuring the first pole terminal 2111 to include a first terminal 2111 and a second terminal 2112, the first extension portion 2022 is electrically connected to the first terminal 2111, and the second extension portion 2023 is electrically connected to the second terminal 2112, the connection area between the first pole input row 202 and the power module 10 can be increased, thereby improving the current transmission capacity between the power module 10 and the mating component.

[0160] In order to make the technical solution of the present disclosure easier to understand, the following takes the first direction being consistent with the front-to-back direction and the second direction being consistent with the left-to-right direction as an example to further describe the technical solution of the present disclosure. Figure 1 , Figure 2 , Figures 9 to 13 The left and right directions are as shown. Figure 1 , Fig. 9 , Fig.10 and Fig.13 shown.

[0161] For example, the first extension portion 2022 and the second extension portion 2023 are disposed at the rear side of the first main body portion 2021 , the first extension portion 2022 is disposed on the left side of the second extension portion 2023 , and the first terminal 2111 is disposed on the left side of the second terminal 2112 .

[0162] Alternatively, if Fig.12 and Fig.13 As shown, the second pole input row 203 includes a second main body portion 2031 and a third extension portion 2032, wherein the third extension portion 2032 is disposed on one side of the second main body portion 2031 in the first direction and is electrically connected to the second main body portion 2031. The third extension portion 2032 is electrically connected to the second pole terminal 212. At least a portion of the orthographic projection of the first main body portion 2021 in the thickness direction of the substrate 1 covers at least a portion of the orthographic projection of the second main body portion 2031 in the thickness direction of the substrate 1.

[0163] Among them, at least a part of the orthographic projection of the first main body portion 2021 in the thickness direction toward the substrate 1 covers at least a part of the orthographic projection of the second main body portion 2031 in the thickness direction toward the substrate 1, which can be understood as: a part of the orthographic projection of the first main body portion 2021 in the thickness direction toward the substrate 1 covers a part of the orthographic projection of the second main body portion 2031 in the thickness direction toward the substrate 1, and another part of the orthographic projection of the first main body portion 2021 in the thickness direction toward the substrate 1 covers another part of the orthographic projection of the second main body portion 2031 in the thickness direction toward the substrate 1; or, the orthographic projection of the first main body portion 2021 in the thickness direction toward the substrate 1 covers the orthographic projection of the second main body portion 2031 in the thickness direction toward the substrate 1.

[0164] For example, Fig.12 and Fig.13 As shown, the second extension portion 2023 is disposed at the rear side of the second main body portion 2031. The downward orthographic projection of the first main body portion 2021 covers the downward orthographic projection of the second main body portion 2031.

[0165] By having at least a portion of the orthographic projection of the first main body 2021 in the thickness direction toward the substrate 1 cover at least a portion of the orthographic projection of the second main body 2031 in the thickness direction toward the substrate 1, the stacking portion between the first pole input row 202 and the second pole input row 203 can be increased, the stray inductance between the first pole input row 202 and the second pole input row 203 can be effectively reduced, and the equivalent inductance of the motor controller can be reduced, thereby enabling the motor controller to operate at a higher voltage.

[0166] Alternatively, if Figures 11 to 13 As shown, the second main body 2031 is arranged on a side of the first main body 2021 away from the substrate 1 in the thickness direction of the substrate 1. The first extension portion 2022 and the second extension portion 2023 are bent in a direction toward the substrate 1. The second terminal 212 is arranged between the first terminal 2111 and the second terminal 2112 in the second direction. The third extension portion 2032 is arranged between the first extension portion 2022 and the second extension portion 2023 in the second direction.

[0167] For example, the second main body 2031 is disposed on the upper side of the first main body 2021. The first extension 2022 and the second extension 2023 are bent downward. The third extension 2032 is disposed between the first extension 2022 and the second extension 2023 in the left-right direction.

[0168] By designing the first extension portion 2022, the second extension portion 2023 and the third extension portion 2032 as described above, the first extension portion 2022, the second extension portion 2023 and the third extension portion 2032 can be arranged more compactly, and the first terminal 2111, the second terminal 2112 and the second terminal 212 can be arranged more compactly, thereby further reducing the size of the motor controller.

[0169] Optionally, at least one of a surface of the first extending portion 2022 facing the substrate 1 and a surface of the second extending portion 2023 facing the substrate 1 is flush with a surface of the third extending portion 2032 facing the substrate 1 .

[0170] For example, the lower surface of the first extension portion 2022 , the lower surface of the second extension portion 2023 , and the lower surface of the third extension portion 2032 are flush.

[0171] By making at least one of the surface of the first extension portion 2022 facing the substrate 1 and the surface of the second extension portion 2023 facing the substrate 1 flush with the surface of the third extension portion 2032 facing the substrate 1 , the volume of the motor controller can be further reduced.

[0172] Optionally, the connection area between the second terminal 212 and the third extension portion 2032 is larger than the connection area between the first terminal 2111 and the first extension portion 2022. The connection area between the second terminal 212 and the third extension portion 2032 is larger than the connection area between the second terminal 2112 and the second extension portion 2023.

[0173] For example, the connection area between the second terminal 212 and the third extension portion 2032 is S1, the connection area between the first terminal 2111 and the first extension portion 2022 is S2, and the connection area between the second terminal 2112 and the second extension portion 2023 is S3. The sum of S2 and S3 is equal to S1, or the sum of S2 and S3 is greater than S1, or the sum of S2 and S3 is less than S1.

[0174] It can be understood that the current between the first pole input row 202 and the second pole input row 203 is equal, and the current transmission capacity of the first pole input row 202 and the second pole input row 203 is equivalent. By performing the above-mentioned design on the connection area between the second pole terminal 212 and the third extension portion 2032, the connection area between the first terminal 2111 and the first extension portion 2022, and the connection area between the second pole terminal 212 and the third extension portion 2032, the current transmission capacity of the first pole input row 202 and the second pole input row 203 is equivalent.

[0175] Optionally, the input terminal 21 and the output terminal 22 are arranged on opposite sides of the substrate 1 in the first direction. The input row 201 and the output row 204 are arranged on opposite sides of the substrate 1 in the first direction.

[0176] For example, Figures 9 to 13 As shown, the input terminal 21 is arranged in front of the output terminal 22, and the input row 201 is arranged in front of the output row 204. The output row 204 is used to be directly or indirectly connected to the three-phase input phase line of the motor.

[0177] By arranging the input terminal 21 and the output terminal 22 on opposite sides of the substrate 1 in the first direction, the input row 201 and the output row 204 are arranged on opposite sides of the substrate 1 in the first direction, so that the distance between the input row 201 and the output row 204 is relatively far, the insulation performance between the input row 201 and the output row 204 is improved, and the safety of the motor controller is improved.

[0178] The vehicle of the embodiment of the present disclosure includes the motor controller described in any of the above embodiments, wherein the vehicle is an electric vehicle.

[0179] The power module 10, motor controller and vehicle of the disclosed embodiment change the power copper busbar in the related art to a conductive one, which greatly reduces the volume of the power module 10. The first terminal 211 and the second terminal 212 connected to the power terminal 2 are stacked, which greatly reduces the stray inductance of the power module 10 and the motor controller. The problem of plastic seal cracking at the junction of the power terminal 2 and the plastic seal 3 is solved, the risk of insulation failure of the power module 10 is reduced, and the reliability of the power module 10 is improved.

[0180] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0181] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0182] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0183] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0184] In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0185] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present disclosure.

Claims

1. A power module, characterized in that: include: substrate; A power terminal is arranged on one side of the substrate in the thickness direction, the power terminal's orthographic projection in the direction toward the substrate covers a portion of the substrate, the end surface of the power terminal close to the substrate is electrically connected to the substrate, and the end surface of the power terminal away from the substrate is used to be electrically connected to a matching component.

2. The power module according to claim 1, characterized in that: The power terminal is a conductive block, and a thickness direction of the conductive block is consistent with a thickness direction of the substrate.

3. The power module according to claim 2, characterized in that: The thickness of the conductive block is 2 mm to 5 mm.

4. The power module according to claim 1, characterized in that: It also includes a plastic package, the substrate is packaged in the plastic package, and at least a portion of the power terminal is packaged in the plastic package.

5. The power module according to claim 4, characterized in that: The plastic packaging body includes a first plastic packaging part and a second plastic packaging part, wherein the second plastic packaging part protrudes from the first plastic packaging part in a direction away from the substrate, the substrate and a part of the power terminal are encapsulated in the first plastic packaging part, and another part of the power terminal is encapsulated in the second plastic packaging part.

6. The power module according to claim 5, characterized in that: An end surface of the power terminal away from the first plastic-encapsulated portion is flush with an end surface of the second plastic-encapsulated portion away from the first plastic-encapsulated portion; or An end surface of the power terminal away from the first plastic encapsulation portion is higher than an end surface of the second plastic encapsulation portion away from the first plastic encapsulation portion.

7. The power module according to claim 4, characterized in that: The power terminal includes a first side surface and a second side surface that are adjacently arranged, and the first side surface intersects the second side surface.

8. The power module according to claim 7, characterized in that: The orthographic projection of the power terminal in a direction toward the substrate is a polygon.

9. The power module according to claim 8, characterized in that: The power terminal is in a prism shape.

10. The power module according to claim 7, characterized in that: The orthographic projection of the power terminal in the direction toward the substrate is a rectangle, and the ratio of the long side to the short side of the rectangle is 1.5 to 6.

5.

11. The power module according to claim 4, characterized in that: A protrusion is provided on a side surface of the power terminal, and / or a groove is provided on a side surface of the power terminal.

12. The power module according to claim 11, characterized in that: The protrusion is in a ring shape and is arranged circumferentially around the power terminal; and / or The groove is in a ring shape and is arranged around the circumference of the power terminal.

13. The power module according to claim 11, characterized in that: There are multiple protrusions, and at least two of the protrusions are arranged at intervals along the thickness direction of the substrate; and / or There are multiple grooves, and at least two of the grooves are arranged at intervals along the thickness direction of the substrate.

14. The power module according to any one of claims 4 to 13, characterized in that: Also comprising a signal terminal, wherein the signal terminal and the power terminal are arranged on the same side in the thickness direction of the substrate; One end of the signal terminal close to the substrate is electrically connected to the substrate, and one end of the power terminal away from the substrate is used to be electrically connected to the chip.

15. The power module according to claim 14, characterized in that: It also includes a connection block, which is arranged between the substrate and the signal terminal in the thickness direction of the substrate, and at least a part of the connection block is encapsulated in the plastic package; The connecting block is a conductive block. The end surface of the connecting block close to the substrate is electrically connected to the substrate, and the end surface of the connecting block away from the substrate is electrically connected to the signal terminal.

16. The power module according to claim 15, characterized in that: The end surface of the connecting block away from the substrate is higher than the end surface of the plastic package body away from the substrate.

17. The power module according to any one of claims 1 to 13, characterized in that: The power terminal is welded to the substrate.

18. The power module according to any one of claims 4 to 13, characterized in that: The material of the power terminal is alloy.

19. The power module according to any one of claims 1 to 13, characterized in that: There are multiple power terminals, and the multiple power terminals are arranged at intervals around the edge of the substrate.

20. A motor controller, characterized in that: include: A power module, wherein the power module is the power module according to any one of claims 1 to 19; A connection row, one end of which is electrically connected to an end surface of the power terminal away from the substrate; A mating component, the other end of the connecting row is electrically connected to the mating component.

21. The motor controller according to claim 20, characterized in that: The number of the power terminals and the number of the connection bars are both multiple, the power terminals include input terminals and output terminals, and the connection bars include input bars and output bars; The input row is electrically connected to the input terminal, and the output row is electrically connected to the output terminal.

22. The motor controller according to claim 21, characterized in that: The number of the input terminals and the input rows are both multiple, the input terminals include a first pole terminal and a second pole terminal, the input rows include a first pole input row and a second pole input row, the first pole input row is electrically connected to the first pole terminal, and the second pole input row is electrically connected to the second pole terminal; Part of the orthographic projection of the first pole input row in the thickness direction of the substrate covers part of the orthographic projection of the second pole input row in the thickness direction of the substrate.

23. The motor controller according to claim 22, characterized in that: The first pole input row comprises a first main body, a first extension and a second extension, wherein the first extension and the second extension are arranged on the same side of the first main body in a first direction and are both electrically connected to the first main body, and the first extension and the second extension are arranged at intervals along a second direction, the first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the thickness direction of the substrate; There are multiple first pole terminals, which include a first terminal and a second terminal. The first terminal and the second terminal are spaced apart along the second direction. The first extension portion is electrically connected to the first terminal, and the second extension portion is electrically connected to the second terminal.

24. The motor controller according to claim 23, characterized in that: The second pole input row comprises a second main body and a third extension portion, wherein the third extension portion is arranged at one side of the second main body in the first direction and is electrically connected to the second main body, and the third extension portion is electrically connected to the second pole terminal; At least a portion of an orthographic projection of the first body portion in a thickness direction of the substrate covers at least a portion of an orthographic projection of the second body portion in the thickness direction of the substrate.

25. The motor controller according to claim 24, characterized in that: The second main body portion is arranged on a side of the first main body portion away from the substrate in the thickness direction of the substrate; The first extension portion and the second extension portion are bent in a direction toward the substrate, the second pole terminal is arranged between the first terminal and the second terminal in the second direction, and the third extension portion is arranged between the first extension portion and the second extension portion in the second direction.

26. The motor controller according to claim 25, characterized in that: At least one of a surface of the first extension portion facing the substrate and a surface of the second extension portion facing the substrate is flush with a surface of the third extension portion facing the substrate.

27. The motor controller according to any one of claims 21 to 26, characterized in that: The input terminal and the output terminal are arranged on opposite sides of the substrate in a first direction, and the first direction is perpendicular to the thickness direction of the substrate; The input row and the output row are disposed on opposite sides of the substrate in the first direction.

28. The motor controller according to any one of claims 20 to 26, characterized in that: The connecting bar is welded to the power terminal, and / or the connecting bar is welded to the matching component.

29. A vehicle, characterized in that: A motor controller comprising any one of claims 20-28.

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