Motor controller of electric vehicle

Abstract

The utility model discloses an electric vehicle motor controller, and specifically relates to the technical field of motor controllers, the electric vehicle motor controller comprises a bottom shell and a top shell, two sides of the bottom shell and the top shell are symmetrically provided with plugging side plates, the middle part of the bottom shell is provided with a mainboard, two ends of the bottom shell and the top shell are provided with threaded holes, and the top of the top shell is embedded and fixedly connected with heat radiation fins. According to the utility model, heat conduction can be carried out on the interiors of the bottom shell and the top shell through the arranged heat dissipation fins, so that the effect of cooling the interiors is realized, the situation that external dust enters the interiors of the bottom shell and the top shell is avoided, and the top of the arranged protection plate is located on the resistor device at the top of the mainboard, so that the heat dissipation effect is improved. According to the technical scheme, part of small-size components on the surface of the mainboard can be shielded and protected, the situation that installation of the components is loosened due to the fact that the components are touched when the wires are connected and used is avoided, the protection effect is achieved while the connection strength is improved, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor controllers, and more specifically, to an electric vehicle motor controller. Background Art

[0002] Electric vehicles are environmentally friendly and low-pollution because they do not burn gasoline to generate power. They are widely used in tourist attractions and other places with high environmental requirements. Existing electric vehicles are equipped with an AC motor controller, which is used to convert the DC power output of the battery into three-phase AC power and drive the motor.

[0003] The motor controller's internal integrated circuit board, power devices, heat sink and other complex components are traditionally assembled relying on manual experience. Simple fixtures or manual positioning are used to position the circuit board and heat sink, and then they are fixed with screws.

[0004] The Chinese patent application number CN201621242122.2 discloses an electric vehicle motor controller. A junction box is installed at the lower end of the left end face of the control box, and a fixing plate is installed at the lower end of the right end face of the control box. The central axis of the fixing plate is parallel to the right end face of the control box. This design effectively improves the heat dissipation effect of the control box, and the design of the fixing plate and the fastening plate serves the purpose of fixing the control box. The design of the fastening plate improves the connection strength between the fixing plate and the control box. Placing the junction box on the outside of the control box prevents damage to the internal electronic components when connecting the circuit, and the design of the reinforcement ribs strengthens the overall strength of the control to prevent the control box from deformation under the action of external force.

[0005] However, combined with the drawings in the manual, it can be seen that the resistor components on the mainboard are directly exposed in the middle of the shell, and then dissipated through the heat dissipation holes opened on the shell. This will cause some dust to enter the shell through the heat dissipation holes and adhere to the components, affecting the heat dissipation and circuit connection effects, thereby affecting the use effect. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an electric vehicle motor controller to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric vehicle motor controller, comprising a bottom shell and a top shell, wherein blocking side plates are symmetrically provided on both sides of the bottom shell and the top shell, and the bottom shell and the top shell are combined and blocked by the blocking side plates, so that the bottom shell and the top shell can be conveniently combined and disassembled for use through modular arrangement, thereby improving the use effect; a main board is provided in the middle of the bottom shell, and threaded holes are provided at both ends of the bottom shell and the top shell, and a heat dissipation fin is embedded and fixedly connected to the top of the top shell, and a mounting plate is fixedly connected to the bottom ends of the opposite sides of the two blocking side plates, so that the blocking side plates can be conveniently installed and fixed through the threaded holes, and the heat generated inside the bottom shell can be conveniently dissipated through the heat dissipation fins, and the controller can be conveniently installed and fixed through the mounting plate;

[0008] The blocking side panels are symmetrically provided with first mounting holes around them, screws are inserted in the middle of the first mounting holes, a wire hole is provided on one side of one of the blocking side panels, and second mounting holes are provided on the surface of the mounting plate. The first mounting holes and the screws are used to facilitate fixing the blocking side panels to both sides of the bottom shell and the top shell, thereby fixing the bottom shell and the top shell together, and the second mounting holes are used to facilitate fixing the mounting plate;

[0009] One side of the inner cavity of the bottom shell is fixedly connected to a supporting platform, and the other side is provided with a first slot, and one side of the supporting platform is provided with a second slot. A protective plate is provided on one side of the top of the supporting platform, and one side of the protective plate is fixedly connected to a card block, and the other side is provided with multiple wire grooves. Through the cooperation of the supporting platform and the first slot, the mainboard can be conveniently clamped in the middle of the bottom shell, which is convenient for supporting and limiting the mainboard, and the second slot is used to facilitate the bottom end of the protective plate to be limited. The electrical components on the top of the protective plate and the top of the mainboard are protected, and the wire grooves are used to facilitate line connection.

[0010] Preferably, the threaded holes correspond one-to-one to the first mounting holes, and one end of the screw passes through the first mounting hole and extends to the inside of the threaded hole. The screw passes through the first mounting hole and is inserted into the inside of the threaded hole, which facilitates the fixation of the sealing side plate, thereby fixing the bottom shell and the top shell together.

[0011] Preferably, the mainboard is located on the top of the supporting platform, and one end of the mainboard is located in the middle of the first card slot. The mainboard is supported by the supporting platform, and one end of the mainboard is positioned by the first card slot, which facilitates the assembly and installation of the mainboard and improves production efficiency.

[0012] Preferably, the mounting plate is located on the side of the blocking side plate away from the heat dissipation fins, one end of the protective plate extends to the inside of the second card slot, and the card block is located in the middle of the second card slot. The controller can be conveniently installed in a preset position through the mounting plate, which is convenient for installation and use. The stability of the protective plate is improved by inserting one end of the protective plate into the inside of the second card slot. The cooperation of the card block and the second card slot fixes the protective plate to improve the stability of the protective plate.

[0013] Preferably, the cross-sectional shape of the protective plate is set to a "<" shape, one end of the protective plate is located on the top of the resistor device on the top of the mainboard, and the wire groove is located directly above the resistor device on the top of the mainboard. The resistor device is covered and protected by the top of the protective plate, and the connecting wires are conveniently extended through the wire groove for connection and use.

[0014] Preferably, a support bar is fixedly connected to the top of one side of the inner cavity of the bottom shell, and the support bar is located at the top of the protective plate. The first connecting clip and the second connecting clip are fixedly connected to the two sides of the bottom of the top shell respectively. The top shell and the bottom shell are adapted to each other, and the top end of the protective plate is limited by the support bar, and the connection between the top shell and the bottom shell is limited by the first connecting clip and the second connecting clip, thereby improving the combined strength of the bottom shell and the top shell and improving the use effect.

[0015] The technical effects and advantages of this utility model are:

[0016] 1. The utility model firstly uses the heat dissipation fins to conduct heat to the interior of the bottom shell and the top shell, thereby achieving the effect of cooling the interior, and preventing external dust from entering the bottom shell and the top shell. In addition, the top of the protective plate is located on the resistor device on the top of the mainboard, which can cover and protect some smaller components on the surface of the mainboard, avoiding loosening of the components due to contact with the components when the wires are connected. This improves the connection strength and plays a protective role, thereby improving the use effect.

[0017] 2. The utility model also limits the mainboard by inserting one side of the mainboard into the interior of the first slot, and supports the other end of the mainboard through the support platform, thereby improving the stability of the mainboard. The protective plate is inserted into the interior of the second slot and the protective plate is limited by the support bar. The combination of the card block and the second slot improves the stability of the protective plate installation. The wire groove does not affect the normal connection of the wires of the resistor component, thereby improving the use effect and facilitating the combined installation and use.

[0018] In summary, through the mutual influence of the above-mentioned multiple effects, heat dissipation can be facilitated without causing external dust to enter the interior, thereby preventing dust while not affecting the heat dissipation effect. In addition, some smaller components on the surface of the motherboard can be covered and protected to avoid loosening of components due to touching the components when the wires are connected. This improves the connection strength while playing a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the split structure of the utility model.

[0021] Figure 3 This is a schematic diagram of the disassembled structure of the top shell, bottom shell and mainboard of the utility model.

[0022] Figure 4 This is a schematic diagram of the split structure of the top shell and bottom shell of the utility model.

[0023] The accompanying drawings are marked as follows: 1. bottom shell; 2. top shell; 3. blocking side panel; 4. first mounting hole; 5. screw; 6. mounting plate; 7. second mounting hole; 8. wire hole; 9. threaded hole; 10. heat sink fin; 11. main board; 12. supporting platform; 13. first slot; 14. support bar; 15. first connecting strip; 16. second connecting strip; 17. second slot; 18. protective plate; 19. block; 20. wire trough. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] As attached Figure 1-4 The electric vehicle motor controller shown includes a bottom shell 1 and a top shell 2. The bottom shell 1 and the top shell 2 are symmetrically provided with blocking side panels 3 on both sides. The bottom shell 1 and the top shell 2 are combined and the two sides of the bottom shell 1 and the top shell 2 are blocked by the blocking side panels 3. The modular setting facilitates the combination and disassembly for use, thereby improving the use effect. A main board 11 is provided in the middle of the bottom shell 1. Threaded holes 9 are provided at both ends of the bottom shell 1 and the top shell 2. A heat dissipation fin 10 is embedded and fixedly connected to the top of the top shell 2. The bottom ends of the opposite sides of the two blocking side panels 3 are fixedly connected with a mounting plate 6. The blocking side panels 3 are conveniently installed and fixed through the threaded holes 9. The heat generated inside the bottom shell 1 is conveniently dissipated through the heat dissipation fins 10, and the controller is conveniently installed and fixed through the mounting plate 6.

[0026] The first mounting holes 4 are symmetrically provided around the blocking side panels 3, a screw 5 is inserted in the middle of the first mounting holes 4, a wire hole 8 is provided on one side of one of the blocking side panels 3, a second mounting hole 7 is provided on the surface of the mounting plate 6, a support platform 12 is fixedly connected to one side of the inner cavity of the bottom shell 1, a first card slot 13 is provided on the other side, a second card slot 17 is provided on one side of the support platform 12, a protective plate 18 is provided on one side of the top of the support platform 12, a card block 19 is fixedly connected to one side of the protective plate 18, and a plurality of wire slots 20 are provided on the other side. The cooperation of the mounting holes 4 and the screws 5 makes it convenient to fix the blocking side panels 3 on both sides of the bottom shell 1 and the top shell 2, thereby fixing the bottom shell 1 and the top shell 2 in combination. The second mounting holes 7 facilitate the installation and fixation of the mounting plate 6. The cooperation of the supporting platform 12 and the first card slot 13 facilitates the clamping of the mainboard 11 in the middle of the bottom shell 1, and facilitates the support and limitation of the mainboard 11. The second card slot 17 facilitates the bottom end limitation of the protective plate 18, and the electrical components on the top of the protective plate 18 and the top of the mainboard 11 are protected. The wire groove 20 facilitates line connection.

[0027] As attached Figure 1-4 As shown, the threaded hole 9 corresponds to the first mounting hole 4 one by one, one end of the screw 5 passes through the first mounting hole 4 and extends to the inside of the threaded hole 9, the main board 11 is located at the top of the support platform 12, one end of the main board 11 is located in the middle of the first slot 13, the mounting plate 6 is located on the side of the blocking side plate 3 away from the heat dissipation fin 10, one end of the protective plate 18 extends to the inside of the second slot 17, the block 19 is located in the middle of the second slot 17, the cross-sectional shape of the protective plate 18 is set to a "<" shape, one end of the protective plate 18 is located at the top of the resistor device on the top of the main board 11, and the wire groove 20 is located directly above the resistor device on the top of the main board 11. The top of the inner cavity side of the bottom shell 1 is fixedly connected with a support bar 14, and the support bar 14 is located at the top of the protective plate 18. The first connecting clip 15 and the second connecting clip 16 are fixedly connected on both sides of the bottom of the top shell 2. The top shell 2 and the bottom shell 1 are adapted to each other, and the screw 5 passes through the first mounting hole 4 and is inserted into the threaded hole 9. The top of the protective plate 18 is limited by the support bar 14, and the connection between the top shell 2 and the bottom shell 1 is limited by the first connecting clip 15 and the second connecting clip 16, thereby improving the combined strength of the bottom shell 1 and the top shell 2 and improving the use effect.

[0028] The working principle of the utility model is as follows: when assembling and using, the protective plate 18 is inserted into the inside of the second card slot 17. Through the cooperation of the card block 19 and the second card slot 17, the support bar 14 limits one end of the protective plate 18 to achieve the positioning of the protective plate 18. Then, by inserting one side of the main board 11 into the inside of the first card slot 13, the end of the main board 11 close to the resistor device is placed on the top of the supporting platform 12, and the main board 11 is installed by sliding. After installation, the top of the protective plate 18 is located directly above the resistor device on the top of the main board 11, which can cover and protect the resistor device.

[0029] Then clamp the top shell 2 on the top of the bottom shell 1, and use the first connecting clip 15 and the second connecting clip 16 to install and position the top shell 2. Then, place the blocking side panels 3 on both sides of the bottom shell 1 and the top shell 2, so that the mounting plate 6 is located on the side away from the heat dissipation fins 10, and make the first mounting holes 4 correspond to the threaded holes 9 one by one. Then, insert the screws 5 through the first mounting holes 4 and into the threaded holes 9 to install and fix the blocking side panels 3. The assembly is complete.

[0030] When a bolt is inserted into the second mounting hole 7 , the controller can be conveniently mounted at a preset position through the mounting plate 6 . When in use, the heat dissipation efficiency is improved through the heat dissipation fins 10 .

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric vehicle motor controller, comprising a bottom shell (1) and a top shell (2), characterized in that: The bottom shell (1) and the top shell (2) are symmetrically provided with blocking side panels (3), the middle of the bottom shell (1) is provided with a main board (11), both ends of the bottom shell (1) and the top shell (2) are provided with threaded holes (9), the top of the top shell (2) is embedded with a heat dissipation fin (10) fixedly connected, and the bottom ends of the two blocking side panels (3) on opposite sides are fixedly connected with a mounting plate (6); The blocking side plate (3) is symmetrically provided with first mounting holes (4) on all sides, a screw (5) is inserted into the middle of the first mounting hole (4), a wire hole (8) is provided on one side of the blocking side plate (3), and a second mounting hole (7) is provided on the surface of the mounting plate (6); One side of the inner cavity of the bottom shell (1) is fixedly connected to a supporting platform (12), and the other side is provided with a first card slot (13), one side of the supporting platform (12) is provided with a second card slot (17), and one side of the top of the supporting platform (12) is provided with a protective plate (18), one side of the protective plate (18) is fixedly connected to a card block (19), and the other side is provided with a plurality of wire slots (20).

2. The electric vehicle motor controller according to claim 1, characterized in that: The threaded holes (9) correspond to the first mounting holes (4) one by one, and one end of the screw (5) passes through the first mounting hole (4) and extends to the inside of the threaded hole (9).

3. The electric vehicle motor controller according to claim 1, characterized in that: The main board (11) is located on the top of the supporting platform (12), and one end of the main board (11) is located in the middle of the first card slot (13).

4. The electric vehicle motor controller according to claim 1, characterized in that: The mounting plate (6) is located on a side of the blocking side plate (3) away from the heat dissipation fins (10), one end of the protective plate (18) extends to the inside of the second card slot (17), and the card block (19) is located in the middle of the second card slot (17).

5. The electric vehicle motor controller according to claim 1, characterized in that: The cross-sectional shape of the protective plate (18) is set to be a "<" shape, one end of the protective plate (18) is located on the top of the resistor device on the top of the main board (11), and the wire slot (20) is located directly above the resistor device on the top of the main board (11).

6. The electric vehicle motor controller according to claim 1, characterized in that: A support bar (14) is fixedly connected to the top of one side of the inner cavity of the bottom shell (1), and the support bar (14) is located on the top of the protective plate (18). A first connecting clip (15) and a second connecting clip (16) are fixedly connected to both sides of the bottom of the top shell (2), respectively. The top shell (2) and the bottom shell (1) are adapted to each other.

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