Electrolytic capacitor mounting structure and motor controller

Abstract

The utility model provides an electrolytic capacitor installation structure and a motor controller, the electrolytic capacitor installation structure comprises a radiator, an electrolytic capacitor, an aluminum substrate, an insulation support and two conducting strips, the radiator is provided with a capacitor groove used for installing the electrolytic capacitor, the electrolytic capacitor is arranged in the capacitor groove, the top end of the electrolytic capacitor is provided with two pins, and the two pins are connected with the aluminum substrate. The aluminum substrate is arranged at the top end of the radiator, the insulating support is located above the electrolytic capacitor and detachably installed on the aluminum substrate, the two conducting strips correspond to the two pins in a one-to-one mode, the two conducting strips are installed on the insulating support in a spaced mode, the pins vertically penetrate through the aluminum substrate and the insulating support and then are connected with one ends of the corresponding conducting strips, and the other ends of the conducting strips are connected with the insulating support. One end of the conducting strip away from the pin is connected with the aluminum substrate. The utility model has the advantages of simple and compact structure, small volume, good heat dissipation performance and strong shock resistance, and can realize the inverted installation of the electrolytic capacitor with a direct insertion packaging structure on the aluminum substrate, thereby improving the stability and reliability of the electrolytic capacitor installed on the aluminum substrate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor controller technical field especially relates to electrolytic capacitor mounting structure and motor controller. BACKGROUND

[0002] The motor controller is the key core component of the electric two-wheeled vehicle, is responsible for management and control whole vehicle's electric power system, plays the decisive role to electric two-wheeled vehicle's performance and control experience.In recent years, the rapid growth of electric two-wheeled vehicle promotes the technology of motor controller to progress ceaselessly, and the pursuit of electric two-wheeled vehicle performance of user and the application of some new technology make the power density of motor drive system ceaselessly increase, and its heat output is more and more big;On the other hand, the layout space of electric two-wheeled vehicle is narrow, and the requirement of product function, cost control is higher and higher, and the motor controller needs ceaselessly to the compactness of structure, small size development, and these make the heat dissipation of electric two-wheeled vehicle motor controller further aggravate.

[0003] The prior art usually adopts aluminum substrate technology to improve the heat dissipation capacity of the motor controller, sets the control circuit with small heat in the upper layer printed circuit board, sets the driving circuit with large heat in the lower layer aluminum substrate, and then tightly sticks the lower surface of the aluminum substrate to the heat dissipation metal shell, as shown in the drawings. Figure 7 However, this heat dissipation structure needs to solve the problem that the straight insertion type packaged electrolytic capacitor is difficult to install on the aluminum substrate. Since the electrolytic capacitor has large volume and high heat output, if the electrolytic capacitor is welded on the circuit layer of the upper surface of the aluminum substrate from top to bottom in the conventional way, the welding strength and shock resistance of the electrolytic capacitor cannot be guaranteed, and in addition, the spacing between the upper layer printed circuit board and the lower layer aluminum substrate is increased, or a through hole needs to be provided on the printed circuit board to avoid the electrolytic capacitor, which is not conducive to the compactness and smallness of the internal space of the motor controller. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an electrolytic capacitor mounting structure and a motor controller, which have simple and compact structure, small volume, good heat dissipation performance, strong shock resistance, and can realize inverted installation of the electrolytic capacitor with straight insertion packaging structure on the aluminum substrate without bending the electrolytic capacitor pin, thereby improving the stability and reliability of the electrolytic capacitor mounted on the aluminum substrate.

[0005] The utility model is implemented by the following technical solutions:

[0006] The utility model provides an electrolytic capacitor mounting structure, including radiator, electrolytic capacitor, aluminum substrate, insulating support and two conductive sheets, the capacitor groove for installing electrolytic capacitor is seted up on the radiator, electrolytic capacitor sets up in the capacitor groove, the top of electrolytic capacitor is equipped with two pins, the top of aluminum substrate sets up on the radiator, insulating support is located electrolytic capacitor's top, and can detachably install on the aluminum substrate, two conductive sheets with two pins one to one, two conductive sheets are installed on the insulating support with interval, and the pin vertically passes through the aluminum substrate and insulating support and is connected with the one end of corresponding conductive sheet, and the end of conductive sheet away from the pin is connected with the aluminum substrate.

[0007] Further, a first through hole is formed in the aluminum substrate, a positioning boss is formed by protruding downward from the middle of the bottom of the insulating support, the positioning boss is inserted into the first through hole and is in interference fit with the first through hole, two second through holes are formed in the positioning boss, the second through holes pass through the insulating support and the positioning boss, and the two pins are connected with the corresponding conductive sheets after passing through the two second through holes, respectively.

[0008] Further, the first through hole is a rectangular through hole, the four corners of the first through hole are rounded, the vertical section of the positioning boss is a trapezoidal structure, the horizontal section of the positioning boss is a rounded rectangular structure, and the radius of the rounded corner of the positioning boss is smaller than the radius of the rounded corner of the first through hole.

[0009] Further, an insulating boss is arranged on the insulating support between the two conductive sheets, the two ends of the insulating boss are fixed on the two sides of the insulating support, respectively, and two fixing structures for fixing the two conductive sheets are arranged on the insulating support.

[0010] Further, the two fixing structures are arranged on the insulating support in mirror symmetry, the fixing structure comprises a U-shaped limiting block and two inverted L-shaped limiting blocks, the U-shaped limiting block is arranged on one end of the insulating support and forms a vertical limiting slot with the insulating support, the two inverted L-shaped limiting blocks are arranged on the two sides of the insulating support, respectively, and each inverted L-shaped limiting block forms an L-shaped limiting slot with the insulating boss, the conductive sheet comprises a first horizontal part, a vertical part and a second horizontal part connected in sequence, and two L-shaped reverse buckles arranged on the two sides of the first horizontal part, respectively, the first horizontal part is arranged on the insulating support and connected with the corresponding pin, the two L-shaped reverse buckles are arranged in the two L-shaped limiting slots, respectively, the vertical part passes through the vertical limiting slot, the second horizontal part is connected with the aluminum substrate and abuts against the U-shaped limiting block.

[0011] Further, the top ends of the insulating boss, the U-shaped limiting block and the inverted L-shaped limiting block are flush.

[0012] Further, two grooves are arranged on the insulating boss for inserting one end of the two conductive sheets, respectively.

[0013] Further, the conductive sheet comprises a first horizontal part, a vertical part and a second horizontal part connected in sequence, and two L-shaped reverse buckles respectively arranged on both sides of the first horizontal part, the first horizontal part is arranged on the insulating support and connected with the corresponding pin, the vertical part is in contact with one end of the insulating support, the second horizontal part is connected with the aluminum substrate, the insulating boss is provided with a limiting strip for limiting the positions of the L-shaped reverse buckles and the first horizontal part, and the two fixing structures are symmetrically arranged on the insulating support.

[0014] Further, the top ends of the insulating boss and the fixing block are flush.

[0015] The utility model discloses still a kind of motor controller, including the electrolytic capacitor mounting structure of above.

[0016] Compared with prior art, the utility model has the advantages that: simple and compact structure, small size, electrolytic capacitor is arranged in radiator, good heat dissipation performance, strong anti-shock ability, and electrolytic capacitor of direct insertion packaging structure can be realized inverted mounting on aluminum substrate, without bending electrolytic capacitor pin, avoid damaging electrolytic capacitor in installation process, solve the technical problem of electrolytic capacitor and aluminum substrate inverted mounting, improve the stability and reliability of electrolytic capacitor mounted on aluminum substrate;The utility model can be compatible with a variety of different models of electrolytic capacitor, and electrolytic capacitor can be welded on aluminum substrate more close to other related electronic components, improve the filtering effect of electrolytic capacitor. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is structural schematic diagram of the first embodiment of the utility model electrolytic capacitor mounting structure;

[0018] Figure 2 It is installation exploded schematic view of the first embodiment of the utility model electrolytic capacitor mounting structure;

[0019] Figure 3 It is sectional view of the first embodiment of the utility model electrolytic capacitor mounting structure;

[0020] Figure 4 It is exploded schematic view of insulating support and conductive sheet in the first embodiment of the utility model electrolytic capacitor mounting structure;

[0021] Figure 5 It is exploded schematic view of insulating support and conductive sheet in the second embodiment of the utility model electrolytic capacitor mounting structure;

[0022] Figure 6 It is installation schematic view of insulating support and conductive sheet in the second embodiment of the utility model electrolytic capacitor mounting structure;

[0023] Figure 7 Fig. 1 is a structural schematic diagram of an electrolytic capacitor mounting structure in the prior art.

[0024] In the figure, 1 is a heat sink, 11 is a capacitor groove, 2 is an electrolytic capacitor, 21 is a pin, 3 is an aluminum substrate, 31 is a first through hole, 4 is an insulating support, 41 is a positioning boss, 42 is a second through hole, 5 is a conductive sheet, 51 is a first horizontal part, 52 is a vertical part, 53 is a second horizontal part, 54 is an L-shaped reverse buckle, 6 is an insulating boss, 61 is a groove, 62 is a limiting strip, 7 is a fixing structure, 71 is a U-shaped limiting block, 72 is an inverted L-shaped limiting block, 73 is a vertical limiting groove, 74 is an L-shaped limiting groove, 75 is a fixing block, 76 is a buckle, and 8 is a printed circuit board. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0027] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0029] In the description of the present utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the utility model product is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 It is a structure schematic view of the first embodiment of the electrolytic capacitor mounting structure of the present utility model, Figure 2 It is a mounting exploded schematic view of the first embodiment of the electrolytic capacitor mounting structure of the present utility model, Figure 3 It is a sectional view (without showing the heat sink) of the first embodiment of the electrolytic capacitor mounting structure of the present utility model. A kind of electrolytic capacitor 2 mounting structure, including heat sink 1, electrolytic capacitor 2, aluminum substrate 3, insulating support 4 and two conductive sheets 5, heat sink 1 is equipped with capacitor groove 11 for installing electrolytic capacitor 2, electrolytic capacitor 2 is arranged in capacitor groove 11, the top of electrolytic capacitor 2 is equipped with two pins 21, aluminum substrate 3 is arranged at the top of heat sink 1, insulating support 4 is located above electrolytic capacitor 2, and can be detachably installed on aluminum substrate 3, two conductive sheets 5 correspond to two pins 21 one by one, two conductive sheets 5 are installed on insulating support 4 with interval, pin 21 vertically passes through aluminum substrate 3 and insulating support 4 and is connected with the one end of corresponding conductive sheet 5, the end of conductive sheet 5 away from pin 21 is connected with aluminum substrate 3.

[0031] The utility model discloses electrolytic capacitor 2 mounting structure installs electrolytic capacitor 2 in the capacitor groove 11 of radiator 1, and installs the insulating support 4 on the aluminum substrate 3 after installing the conducting sheet 5 on the insulating support 4, connects the conducting sheet 5 with the aluminum substrate 3 circuit layer, and the two pins 21 of electrolytic capacitor 2 positive and negative are fixed with two conducting sheets 5 after passing through the aluminum substrate 3 and the insulating support 4 in proper order with two conducting sheets 5 welding, thereby realizing electrolytic capacitor 2, conducting sheet 5 and aluminum substrate 3 circuit layer electric connection.

[0032] In an embodiment, to further improve the heat dissipation effect, the gap between electrolytic capacitor 2 and capacitor groove 11 is filled with thermal conductive silicone grease. This setting ensures that the heat of electrolytic capacitor 2 and aluminum substrate 3 is dissipated to the outside through radiator 1.

[0033] In an embodiment, a first through hole 31 is formed on the aluminum substrate 3, a positioning boss 41 is formed by protruding downward from the middle of the bottom of the insulating support 4, the positioning boss 41 is inserted into the first through hole 31 and is in interference fit with the first through hole 31, two second through holes 42 are formed on the positioning boss 41 and pass through the insulating support 4 and the positioning boss 41, and the two pins 21 are connected with the corresponding conducting sheets 5 after passing through the two second through holes 42 respectively. The insulating support 4 and the aluminum substrate 3 are detachably connected through the interference fit of the positioning boss 41 and the first through hole 31, which facilitates the installation of the insulating support 4 on the aluminum substrate 3. Moreover, the two pins 21 of the electrolytic capacitor 2 pass through the two second through holes 42 respectively, that is, they pass through the aluminum substrate 3 and the insulating support 4, which facilitates the connection of the pins 21 with the conducting sheets 5. In an embodiment, a third through hole is formed on the conducting sheet 5 for the pin 21 to pass through, and the pin 21 is welded with the corresponding conducting sheet 5 after passing through the third through hole on the corresponding conducting sheet 5. In an embodiment, the conducting sheet 5 is a flow guide copper sheet.

[0034] In an embodiment, the first through hole 31 is a rectangular through hole, the four corners of the first through hole 31 are rounded, the vertical section of the positioning boss 41 is a trapezoidal structure, the horizontal section of the positioning boss 41 is a rounded rectangular structure, the radius of the rounding of the positioning boss 41 is smaller than the radius of the rounding of the first through hole 31. The size of the lower end surface of the positioning boss 41 is smaller than the size of the first through hole 31, and the size of the upper end surface of the positioning boss 41 is equal to or greater than the size of the first through hole 31, so that when the positioning boss 41 is installed from top to bottom into the first through hole 31, the positioning boss 41 can be more easily inserted into the first through hole 31 and play a guiding role, and the smaller rounding around the positioning boss 41 forms an interference fit with the inner wall of the first through hole 31. Since the insulating support 4 and the positioning boss 41 are plastic parts, their strength is lower than that of the aluminum substrate 3 which is metal, when the insulating support 4 is pressed downward with force, the rounding of the positioning boss 41 will be slightly deformed, so that the entire insulating support 4 can be firmly installed on the aluminum substrate 3.

[0035] In an embodiment, the insulating support 4 is provided with an insulating boss 6 at a position between the two conductive sheets 5, the two ends of the insulating boss 6 are fixed on the two sides of the insulating support 4 respectively, and the insulating support 4 is provided with two fixing structures 7 for fixing the two conductive sheets 5 respectively. The insulating boss 6 can prevent the two conductive sheets 5 from contacting to avoid causing short circuit of the positive and negative electrodes of the electrolytic capacitor 2. The fixing structure 7 can fix the installation position of the conductive sheet 5 on the insulating support 4 to avoid displacement of the conductive sheet 5.

[0036] The first embodiment of the fixing structure 7 will be described below.

[0037] Please refer to Figure 4 , Figure 4In an embodiment, two fixed structures 7 are symmetrically arranged on the insulating support 4, the fixed structure 7 comprises a U-shaped limiting block 71 and two inverted L-shaped limiting blocks 72, the U-shaped limiting block 71 is arranged on one end of the insulating support 4, and a vertical limiting groove 73 is formed between the U-shaped limiting block 71 and the insulating support 4, the two inverted L-shaped limiting blocks 72 are arranged on the two sides of the insulating support 4 respectively, and an L-shaped limiting groove 74 is formed between each inverted L-shaped limiting block 72 and the insulating boss 6, the conductive sheet 5 comprises a first horizontal part 51, a vertical part 52 and a second horizontal part 53 which are sequentially connected, and two L-shaped inverted buckles 54 which are arranged on the two sides of the first horizontal part 51 respectively, the first horizontal part 51 is arranged on the insulating support 4 and connected with the corresponding pin 21, the two L-shaped inverted buckles 54 are arranged in the two L-shaped limiting grooves 74 respectively, the vertical part 52 passes through the vertical limiting groove 73, the second horizontal part 53 is connected with the aluminum substrate 3 and abuts against the U-shaped limiting block 71.

[0038] In an embodiment, the top ends of the insulating boss 6, the U-shaped limiting block 71 and the inverted L-shaped limiting block 72 are flush. The arrangement forms a space for installing the first horizontal part 51 between the insulating boss 6, the U-shaped limiting block 71, the inverted L-shaped limiting block 72 and the insulating support 4, which can limit the movement of the first horizontal part 51. In an embodiment, the insulating boss 6 is provided with two grooves 61 for inserting one end of the two conductive sheets 5 respectively. The insulating boss 6 is in the shape of an H, and the two grooves 61 can position the conductive sheet 5.

[0039] The second embodiment of the fixed structure 7 will be described below.

[0040] Please refer to Figure 5 and Figure 6 , Figure 5 is an exploded view of the insulating support and the conductive sheet in the second embodiment of the electrolytic capacitor mounting structure of the utility model, Figure 6 is a schematic view of the mounting of the insulating support and the conductive sheet in the second embodiment of the electrolytic capacitor mounting structure of the utility model. In an embodiment, the conductive sheet 5 comprises a first horizontal part 51, a vertical part 52 and a second horizontal part 53 connected in sequence, and two L-shaped inverted buckles 54 arranged on both sides of the first horizontal part 51, the first horizontal part 51 is arranged on the insulating support 4 and connected with the corresponding pin 21, the vertical part 52 is in contact with one end of the insulating support 4, the second horizontal part 53 is connected with the aluminum substrate 3, the insulating boss 6 is provided with a limiting strip 62 for limiting the positions of the L-shaped inverted buckles 54 and the first horizontal part 51, and two fixing structures 7 are symmetrically arranged on the insulating support 4, the fixing structure 7 comprises two fixing blocks 75, the two fixing blocks 75 are fixed on both sides of the insulating support 4, and the fixing block 75 is provided with a buckle 76 for buckling the vertical part 52 on the insulating support 4. Unlike the first embodiment of the fixing structure 7, the notches of the L-shaped inverted buckles 54 on both sides of the first horizontal part 51 face the front, i.e. towards the insulating boss 6, and the two limiting strips 62 on the insulating boss 6 and the insulating boss 6 form three parallel grooves 61, i.e. a first groove 61, a second groove 61 and a third groove 61, wherein the second groove 61 is located in the middle, and a gap is formed between the insulating boss 6 and the fixing block 75. In this embodiment, the conductive sheet 5 can be once stamped into the required shape, then the first horizontal part 51 of the conductive sheet 5 is mounted on the insulating support 4 and inserted into the second groove 61, at this time, the L-shaped inverted buckles 54 on both sides of the first horizontal part 51 are mounted into the first groove 61 and the third groove 61 through the gap, and then the vertical part 52 of the conductive sheet 5 is pushed into the two buckles 76 from the inside towards the middle of the insulating support 4, and the vertical part 52 of the conductive sheet 5 is fixed on one end of the insulating support 4 through the two buckles 76, at the same time, the L-shaped inverted buckles 54 are in contact with the corresponding limiting strips 62. Thus, the up-down direction, left-right direction and front-back direction of the conductive sheet 5 are limited by the insulating support 4, the limiting strips 62 and the buckles 76, preventing the conductive sheet 5 from moving. Moreover, in this embodiment, the conductive sheet 5 can be once stamped into the required shape, without the need for manual bending while mounting, thereby greatly improving the automation degree of the assembly process.

[0041] In an embodiment, the top ends of the insulating boss 6 and the fixing block 75 are flush. This arrangement forms a space for mounting the first horizontal part 51 between the insulating boss 6, the fixing block 75 and the insulating support 4, which can limit the movement of the first horizontal part 51.

[0042] The utility model discloses still a kind of motor controller, including the electrolytic capacitor 2 mounting structure of above described.The motor controller includes the electrolytic capacitor 2 mounting structure of above described, with the all effects of the electrolytic capacitor 2 mounting structure of above described, here no longer repeat.

[0043] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, so any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the utility model, without departing from the technical scheme of the utility model, still belong to the scope of the technical scheme of the utility model.

Claims

1. An electrolytic capacitor mounting structure, characterized in that, The device includes a heat sink, an electrolytic capacitor, an aluminum substrate, an insulating support, and two conductive plates. The heat sink has a capacitor slot for mounting the electrolytic capacitor, which is placed inside the capacitor slot. The electrolytic capacitor has two leads at its top. The aluminum substrate is located at the top of the heat sink. The insulating support is located above the electrolytic capacitor and is detachably mounted on the aluminum substrate. The two conductive plates correspond one-to-one with the two leads. The two conductive plates are mounted alternately on the insulating support. The leads pass vertically through the aluminum substrate and the insulating support and are connected to one end of the corresponding conductive plate. The end of the conductive plate away from the lead is connected to the aluminum substrate.

2. The electrolytic capacitor mounting structure according to claim 1, characterized in that, The aluminum substrate has a first through hole, and the bottom center of the insulating bracket protrudes downward to form a positioning boss. The positioning boss is inserted into the first through hole and is interference-fitted with the first through hole. The positioning boss has two second through holes, which pass through the insulating bracket and the positioning boss. The two pins pass through the two second through holes and are connected to the corresponding conductive sheet.

3. The electrolytic capacitor mounting structure according to claim 2, characterized in that, The first through hole is a rectangular through hole with rounded corners. The vertical cross-section of the positioning boss is a trapezoidal structure, and the horizontal cross-section of the positioning boss is a rounded rectangular structure. The radius of the rounded corners of the positioning boss is smaller than the radius of the rounded corners of the first through hole.

4. The electrolytic capacitor mounting structure according to claim 1, characterized in that, An insulating boss is provided on the insulating bracket between the two conductive sheets. The two ends of the insulating boss are fixed to the two sides of the insulating bracket, and the insulating bracket is provided with two fixing structures for fixing the two conductive sheets.

5. The electrolytic capacitor mounting structure according to claim 4, characterized in that, Two fixing structures are symmetrically arranged on the insulating bracket. Each fixing structure includes a U-shaped limiting block and two inverted L-shaped limiting blocks. The U-shaped limiting block is located at one end of the insulating bracket, forming a vertical limiting groove between itself and the insulating bracket. The two inverted L-shaped limiting blocks are respectively located on both sides of the insulating bracket, and each inverted L-shaped limiting block forms an L-shaped limiting groove with the insulating boss. The conductive sheet includes a first horizontal part, a vertical part, and a second horizontal part connected in sequence, and two L-shaped buckles respectively located on both sides of the first horizontal part. The first horizontal part is located on the insulating bracket and connected to the corresponding pin. The two L-shaped buckles are respectively located in the two L-shaped limiting grooves. The vertical part passes through the vertical limiting groove. The second horizontal part is connected to the aluminum substrate and abuts against the U-shaped limiting block.

6. The electrolytic capacitor mounting structure according to claim 5, characterized in that, The tops of the insulating boss, the U-shaped limiting block, and the inverted L-shaped limiting block are flush.

7. The electrolytic capacitor mounting structure according to claim 4, characterized in that, The insulating boss is provided with two grooves for inserting one end of each of the two conductive sheets.

8. The electrolytic capacitor mounting structure according to claim 4, characterized in that, The conductive sheet includes a first horizontal part, a vertical part, and a second horizontal part connected in sequence, and two L-shaped buckles respectively disposed on both sides of the first horizontal part. The first horizontal part is disposed on an insulating bracket and connected to the corresponding pin. The vertical part is in contact with one end of the insulating bracket. The second horizontal part is connected to an aluminum substrate. The insulating protrusion is provided with a limiting strip for limiting the position of the L-shaped buckles and the first horizontal part. The two fixing structures are mirror-symmetrically disposed on the insulating bracket. The fixing structure includes two fixing blocks, which are respectively fixed on both sides of the insulating bracket. The fixing blocks are provided with buckles to fasten the vertical part to the insulating bracket.

9. The electrolytic capacitor mounting structure according to claim 8, characterized in that, The top of the insulating boss is flush with the top of the fixing block.

10. A motor controller, characterized in that, Includes the electrolytic capacitor mounting structure as described in any one of claims 1-9.

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