Double-drive controller capable of simultaneously controlling two motors

Abstract

The utility model relates to the technical field of controllers, in particular to a double-drive controller capable of simultaneously controlling two motors, which comprises a power board, a capacitor board and a control board which are sequentially arranged, the power board is arranged on a bottom board, the bottom board is connected with a shell, and the power board, the capacitor board and the control board are positioned between the bottom board and the shell. A plurality of main contactors are arranged on the side face, close to the control board, of the capacitor board. The double-drive controller solves the problems that an existing controller is complex in assembly, high in error rate, large in size, high in production cost and the like, the structural rationality of the double-drive controller is improved, and the application range of the double-drive controller is widened.

Description

Technical Field

[0001] This utility model relates to the field of controller technology, and in particular to a dual-drive controller that can control two motors simultaneously. Background Technology

[0002] A motor controller is a device that drives motors. Currently, domestic electric forklift manufacturers need to drive both the travel motor and the lifting motor in their vehicles, so they need to install two motor controllers on one assembly to achieve the required functions. For the overall assembly, this results in a relatively large size, complex wiring harnesses, which is not conducive to installation, prone to errors during manual operation, and relatively high costs.

[0003] In the design of forklifts, an external main contactor is required at the front end of the motor controller to handle the high voltage of the motor controller. The main contactor is on the assembly or on the forklift, and the wiring is relatively complicated. The wiring part of the main contactor is not waterproof, and the contacts are prone to aging, resulting in poor contact. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the related art. To this end, this invention provides a dual-drive controller that can simultaneously control two motors, solving the problems of complex assembly, high error rate, large size, and high production cost of existing controllers, improving the structural rationality of the dual-drive controller, and expanding the scope of application of the dual-drive controller.

[0005] This utility model provides a dual-drive controller that can simultaneously control two motors, including a power board, a capacitor board, and a control board arranged in sequence. The power board is disposed on a base plate, and the base plate is connected to a housing. The power board, the capacitor board, and the control board are located between the base plate and the housing. Several main contactors are disposed on the side of the capacitor board near the control board.

[0006] A further improvement of this invention, a dual-drive controller capable of simultaneously controlling two motors, is that a positive conductive post and a negative conductive post are provided between the upper surface of the power board and the lower surface of the capacitor board.

[0007] One end of the negative conductive post extends out of the outer casing and is used to connect to the negative terminal of an external power supply.

[0008] One end of the positive conductive post extends out of the outer casing and is used to connect to the positive terminal of an external power supply.

[0009] A further improvement of this utility model of a dual-drive controller that can simultaneously control two motors is that the outer casing is provided with a positive input adapter, which is electrically connected to the protruding end of the positive conductive post, and the positive input adapter is used to electrically connect to the positive terminal of an external power supply.

[0010] A further improvement of this utility model of a dual-drive controller capable of simultaneously controlling two motors is that the housing is provided with a fuse, which is connected to the positive input adapter and the positive conductive post.

[0011] A further improvement of this utility model of a dual-drive controller capable of simultaneously controlling two motors is that a conductive post is provided between the capacitor board and the power board, the conductive post being located between the positive conductive post and the negative conductive post, a current conversion unit is provided on the power board, the conductive post being connected to the current conversion unit, and the current conversion unit being used for mutual conversion between direct current and alternating current.

[0012] A further improvement of this utility model of a dual-drive controller capable of simultaneously controlling two motors is that a plurality of UVW pillars are provided between the capacitor board and the power board. The UVW pillars are fixedly connected to the base plate, and one end of the UVW pillar extends outward through the outer casing. The extended end of the UVW pillar can be electrically connected to an external motor.

[0013] A further improvement of this utility model, a dual-drive controller capable of simultaneously controlling two motors, is that the capacitor plate is further provided with 6 capacitor setting areas for placing supporting capacitors, each capacitor setting area is provided with 8 supporting capacitors, the 6 capacitor setting areas are spaced apart and located on the same straight line, and 7 main contactors are provided, the 7 main contactors are spaced apart and located on the same straight line.

[0014] A further improvement of this utility model, a dual-drive controller capable of simultaneously controlling two motors, is that the capacitor board and the power board are connected by an insulating component, and an insulating support is also provided on the capacitor board, with the control board connected to the insulating support.

[0015] A further improvement of this utility model, a dual-drive controller capable of simultaneously controlling two motors, is that the control board is equipped with a current acquisition unit and a control unit.

[0016] A further improvement of this utility model, a dual-drive controller capable of simultaneously controlling two motors, is that a plug is provided on the outer casing.

[0017] This utility model, a dual-drive controller capable of simultaneously controlling two motors, solves the problems of complex assembly, high error rate, large size, and high production cost of existing controllers. The main contactor is placed internally for control, which can prevent the main contactor from failing due to harsh external environments, while meeting the IP67 protection standard. Combining functions and using sockets with different pins for foolproof design can reduce the probability of accidents caused by improper operation.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is an exploded schematic diagram of a dual-drive controller that can simultaneously control two motors, provided by an embodiment of this utility model.

[0021] Figure label:

[0022] 1. Base plate; 2. Negative conductive post; 3. Conductive post; 4. Current conversion unit; 5. Insulating component; 6. Capacitor board; 7. Control board; 8. Current acquisition unit; 9. Housing; 10. Sealing ring; 11. 35-pin plug; 12. 23-pin plug; 13. Positive input adapter; 14. Fuse; 15. Control unit; 16. Support capacitor; 17. Insulating support post; 18. Main contactor; 19. UVW post; 20. Power board; 21. Sealing strip; 22. Positive conductive post; 23. Insulating assembly. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The following embodiments are used to illustrate this utility model but should not be used to limit its scope.

[0024] The following is combined with Figure 1This invention describes a dual-drive controller capable of simultaneously controlling two motors, comprising a power board 20, a capacitor board 6, and a control board 7 arranged sequentially and electrically connected. The power board 20 is disposed on a base plate 1, and the base plate 1 is connected to a housing 9. The power board 20, capacitor board 6, and control board 7 are located between the base plate 1 and the housing 9. Several main contactors 18 are disposed on the side of the capacitor board 6 near the control board 7.

[0025] In a preferred embodiment of the dual-drive controller capable of simultaneously controlling two motors, a positive conductive post 22 and a negative conductive post 2 are disposed between the upper surface of the power board 20 and the lower surface of the capacitor board 6. One end of the negative conductive post 2 extends outward through the outer casing 9, and the extended end of the negative conductive post 2 is used for electrical connection with the negative terminal of the external power supply. One end of the positive conductive post 22 extends outward through the outer casing 9, and the extended end of the positive conductive post 22 is used for electrical connection with the positive terminal of the external power supply.

[0026] Specifically, a conductive post 3 is provided between the capacitor plate 6 and the power plate 20. The conductive post 3 is located between the positive conductive post 22 and the negative conductive post 2. A current conversion unit 4 is provided on the power plate 20, and the conductive post 3 is connected to the current conversion unit 4. The current conversion unit 4 is used for mutual conversion between direct current and alternating current. Insulation components 23 are provided between several conductive posts 3 to prevent short circuits between the conductive posts 3, thereby improving the safety and stability of the entire dual-drive controller. The insulation components 23 can be in the form of insulating plates or insulating sleeves, etc., to effectively isolate each conductive post 3 and ensure that the current does not interfere with each other or make accidental contact during transmission.

[0027] Preferably, the current conversion unit 4 is integrated on the power board 20. The current conversion unit 4 can convert DC and AC power to each other. Compared with ordinary single control which can only output one set of three-phase current, the current conversion unit 4 in this example can output two different sets of three-phase current, and can provide input current for two different motors at the same time. The capacitor board 6 has insulating parts 5 and insulating supports 17, which provide electrical insulation guarantee when the screws are fixed. One end of the screw is screwed into the base plate 1.

[0028] A conductive post 3 is provided between the capacitor plate 6 and the power plate 20. The conductive post 3 is fixedly connected to the upper surface of the power plate 20 and the lower surface of the capacitor plate 6, which can realize the electrical connection between the capacitor plate 6 and the conductive post 3, and between the power plate 20 and the conductive post 3. It provides stable support for the space between the capacitor plate 6 and the power plate 20 and applies pressure to the power plate 20 to ensure heat dissipation of the power plate 20.

[0029] The negative conductive post 2 is fixedly connected to the upper surface of the power board 20 and the lower surface of the capacitor board 6, ensuring the electrical connection between the capacitor board 6 and the power board 20, providing stable support for the space between the two boards, and applying pressure to the power board 20 to ensure heat dissipation. One end of the negative conductive post 2 protrudes through the outer casing 9 and extends outward. The protruding end of the negative conductive post 2 can be electrically connected to the negative terminal of the external power supply, thus realizing the electrical connection between the capacitor board 6 and the negative terminal of the external power supply.

[0030] The positive conductive post 22 is fixedly connected to the upper surface of the power board 20 and the lower surface of the capacitor board 6, realizing the electrical connection between the capacitor board 6 and the power board 20, providing stable support for the space between the two boards, and applying pressure to the power board 20 to ensure heat dissipation. One end of the positive conductive post 22 protrudes out of the outer casing 9. The outer casing 9 is provided with a positive input adapter 13, which is electrically connected to the protruding end of the positive conductive post 22. The positive input adapter 13 can be electrically connected to the positive terminal of the external power supply, thus realizing the electrical connection between the capacitor board 6 and the positive terminal of the external power supply.

[0031] Specifically, the outer casing 9 is equipped with a fuse 14, which is connected to the positive input adapter 13 and the positive conductive post 22. The positive input adapter 13 is ingeniously designed to facilitate quick and stable connection with an external power supply, ensuring stable current input. The fuse 14 is connected to the positive conductive post 22, providing overcurrent protection for the dual-drive controller. As an important protective element in the circuit, it can quickly melt and break the circuit when the current abnormally rises to the set value, thereby effectively preventing equipment damage or fire caused by excessive current. This design greatly enhances the safety and reliability of the dual-drive controller.

[0032] In one specific implementation, the positive input adapter 13 is fixed to the housing 9 by a screw, which makes better use of the internal space of the dual drive controller and allows for easy connection of external positive input devices of different thicknesses without requiring the user to replace screws of different lengths.

[0033] Furthermore, a plurality of UVW pillars 19 are provided between the capacitor plate 6 and the power plate 20. The UVW pillars 19 are fixedly connected to the base plate 1. One end of the UVW pillar 19 passes through the outer shell 9 and extends outward. The extended end of the UVW pillar 19 can be electrically connected to an external motor.

[0034] Specifically, the outer casing 9 is provided with a connection hole corresponding to the UVW post 19, and a sealing ring 10 is provided between the UVW post 19 and the connection hole to effectively prevent moisture or dust and other impurities from entering the interior of the dual drive controller and ensure the stable operation of the dual drive controller.

[0035] Specifically, the UVW column 19 consists of separate U-unit column, V-unit column, and W-unit column. The two sets of UVW columns 19 are used to connect the corresponding phase lines of the two motors. The current conversion unit 4 can flexibly switch the current path according to the instructions of the control board 7 to realize independent or synchronous control of the two motors.

[0036] Preferably, the UVW post 19 is fixedly connected to the upper surface of the base plate 1, enabling electrical connection between the power board 20 and the UVW post 19, and applying pressure to the power board 20 to ensure heat dissipation. The UVW post 19 is fixed to the base plate 1 with screws, and an insulating element 5 is provided between the screws and the post body of the UVW post 19 to ensure the electrical insulation performance of the dual-drive controller. One end of the UVW post 19 protrudes out of the housing 9, and the protruding end of the UVW post 19 can be electrically connected to the motor to supply the AC current output by the current conversion unit 4 to the motor.

[0037] Preferably, the positive conductive post 22, the negative conductive post 2, the conductive post 3, the UVW post 19, and the capacitor plate 6 enable the current conversion unit 4 on the power board 20 to be electrically connected to the positive terminal, the negative terminal, and the motor terminal of the external power supply. At the same time, the current conversion unit 4 can convert between DC and AC power, making it convenient to supply power according to the power needs of external devices.

[0038] Furthermore, the capacitor plate 6 is also provided with 6 capacitor setting areas for placing supporting capacitors. Each capacitor setting area is provided with 8 supporting capacitors 16. The 6 capacitor setting areas are spaced apart and located on the same straight line. By optimizing the layout and distribution of the supporting capacitors 16, the stability and efficiency of the circuit are ensured. The supporting capacitors 16 can effectively reduce voltage fluctuations and improve the overall performance of the circuit. The supporting capacitors 16 can also ensure that the dual-drive controller has stable electrical performance in various harsh environments, further enhancing the adaptability and reliability of the dual-drive controller. The supporting capacitors 16 are welded and fixed to the capacitor plate 6. Plastic insulating sheets are additionally glued to the end face of the supporting capacitors 16 in the same capacitor setting area to strengthen the insulation capability of the supporting capacitors 16 and improve the shock resistance.

[0039] Furthermore, seven main contactors 18 are provided, spaced apart and located on the same straight line. The main contactors 18 and supporting capacitors 16 are integrated onto a single capacitor board 6, avoiding the cumbersome installation steps of external main contactors 18, improving the reliability of the dual-drive controller, saving materials, and reducing costs. The integration of the main contactors 18 and supporting capacitors 16 on the capacitor board 6, using a welding method for connection, offers advantages such as improved production efficiency and reduced costs. The precise design and layout of the seven main contactors 18 ensures the stability and efficiency of the circuit when controlling two motors. They can simultaneously respond to control signals, achieving rapid motor start-up and stop, as well as precise speed and direction control. In addition, the spaced arrangement and straight-line layout of the main contactors 18 facilitates heat dissipation and maintenance, improving the overall performance and lifespan of the dual-drive controller. This design makes the dual-drive controller widely applicable in fields such as industrial automation and mechanical manufacturing.

[0040] Furthermore, the capacitor board 6 and power board 20 are connected by an insulator 5, ensuring electrical isolation between them and preventing short circuits caused by direct current flow. This also provides stable mechanical support and enhances the structural strength of the dual-drive controller. The insulator 5 is made of high-performance insulating material, possessing excellent high-temperature resistance, voltage resistance, and wear resistance, maintaining stable insulation performance during long-term operation, further ensuring the safety and reliability of the dual-drive controller. In addition, the design of connecting the capacitor board 6 and power board 20 via the insulator 5 simplifies the assembly process of the dual-drive controller, improves production efficiency, and reduces manufacturing costs, providing strong support for the widespread application of dual-drive controllers.

[0041] Furthermore, an insulating support post 17 is also provided on the capacitor board 6. The control board 7 is connected to the insulating support post 17. The control board 7 is equipped with a current acquisition unit 8 and a control unit 15. The current acquisition unit 8 is responsible for monitoring the current passing through the capacitor board 6 in real time to ensure the stability and safety of the current. Once the current fluctuates abnormally or exceeds the preset range, the current acquisition unit 8 will immediately transmit the signal to the control unit 15. As the core component of the dual-drive controller, the control unit 15 is responsible for receiving the signal from the current acquisition unit 8 and external control commands. According to the preset algorithm and logic, it precisely controls the operating status of the two motors. By controlling the opening and closing of the main contactor 18, it realizes the starting, stopping, speed, and direction adjustment of the motors. At the same time, the control unit 15 can also intelligently adjust the charging and discharging state of the capacitor according to the voltage and current of the capacitor board 6 to maintain the stability and efficiency of the circuit. The insulating support post 17, as a bridge connecting the capacitor board 6 and the control board 7, not only provides stable mechanical support but also ensures the safety of electrical isolation, making the entire dual-drive controller more reliable and stable during operation.

[0042] Preferably, the control board 7 can direct other parts of the dual-drive controller to work together to achieve the required functions. The control board 7 is fixed above the capacitor board 6, away from heat sources, to ensure the working environment of the control board 7. The control board 7 integrates a current acquisition unit 8, which collects the current information of the UVW column 19 passing through it and feeds it back to the control unit 15, so as to achieve more accurate current feedback and faster response.

[0043] Furthermore, the outer casing 9 is provided with plugs, namely a 35-pin plug 11 and a 23-pin plug 12.

[0044] Preferably, the power board 20 is fixed to the base plate 1, so that the heat generated during the current conversion process can be transferred to the base plate 1 in the first time, which improves the heat transfer efficiency, increases the heat dissipation performance, and indirectly increases the heat capacity of the power board 20.

[0045] Preferably, the housing 9 is fixed to the base plate 1, providing protection for the internal functional components of the dual drive controller. The sealing strip 21, which is pressed and fixed between the housing 9 and the base plate 1, the sealing ring 10, which is interference-fitted and tightened between the housing 9 and the UVW post 19, the positive conductive post 22, and the negative conductive post 2, and the 35PIN plug 11 and 23PIN plug 12 connected by the customer, together provide the dual drive controller with a protection level that reaches the IP67 protection rating, making the dual drive controller more adaptable to harsh working conditions.

[0046] This utility model, a dual-drive controller capable of simultaneously controlling two motors, solves the problems of complex assembly, high error rate, large size, and high production cost of existing controllers. The main contactor 18 is placed internally for control, which can prevent the main contactor 18 from failing due to harsh external environments, while also meeting the IP67 protection standard. Combining functions with sockets of different pins and implementing foolproof design can reduce the probability of accidents caused by improper operation.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dual drive controller capable of simultaneously controlling two electric machines, characterized by, The power plate, the capacitor plate and the control plate are sequentially arranged, the power plate is arranged on the bottom plate, the bottom plate is connected with the shell, the power plate, the capacitor plate and the control plate are located between the bottom plate and the shell, and the capacitor plate is provided with a plurality of main contactors on the side close to the control plate.

2. The dual drive controller of claim 1, wherein, The upper surface of the power plate and the lower surface of the capacitor plate are provided with positive and negative conductive columns, One end of the negative conductive column penetrates the shell and extends outward, and the extended end of the negative conductive column is used for electrically connecting with the negative pole of the external power supply end. One end of the positive conductive column penetrates the shell and extends outward, and the extended end of the positive conductive column is used for electrically connecting with the positive pole of the external power supply end.

3. The dual drive controller of claim 2, wherein, The shell is provided with a positive input adapter, the positive input adapter is electrically connected to the extended end of the positive conductive column, and the positive input adapter is used for electrically connecting with the positive pole of the external power supply end.

4. The dual drive controller of claim 3, wherein, The shell is provided with a fuse, and the fuse is connected between the positive input adapter and the positive conductive column.

5. The dual drive controller of claim 2, wherein, The capacitor plate and the power plate are provided with a conductive column between them, the conductive column is located between the positive conductive column and the negative conductive column, the power plate is provided with a current conversion unit, the conductive column is connected to the current conversion unit, and the current conversion unit is used for mutual conversion of direct current and alternating current.

6. The dual drive controller of claim 1, wherein, The capacitor plate and the power plate are provided with a plurality of groups of UVW columns, the UVW columns are fixedly connected to the bottom plate, one end of the UVW column penetrates the shell and extends outward, and the extended end of the UVW column can be electrically connected with the external motor.

7. The dual drive controller of claim 1, wherein, The capacitor plate is also provided with six capacitor setting areas for placing support capacitors, each capacitor setting area is provided with eight support capacitors, six capacitor setting areas are arranged at intervals and located on the same straight line, the main contactors are provided with seven, and seven main contactors are arranged at intervals and located on the same straight line.

8. The dual drive controller of claim 1, wherein, The capacitor plate and the power plate are connected through an insulating piece, and the control plate is connected to the insulating support column.

9. The dual drive controller of claim 1, wherein, The control plate is provided with a current collection unit and a control unit.

10. The dual drive controller of claim 1, wherein, The shell is provided with a plug.

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