Dual-motor active damping control system

Abstract

The utility model discloses a dual-motor active damping control system, which relates to damping control and comprises an input module, a control module, a driving module, a power supply module, an acquisition module and an implementation module. The driving module comprises two driving boards and two IGBT modules connected with the driving boards in a one-to-one correspondence mode, the implementation module comprises two motors, the two IGBT modules are of an up-down laminated structure, a grid type cooling water jacket which is in contact with the surfaces of the two IGBT modules at the same time is arranged between the two IGBT modules, and the motor is connected with the grid type cooling water jacket. The peripheries of the two motors are sleeved with spiral cooling pipes making contact with the surfaces of the motors. The double-motor active damping control system is reasonable and ingenious in structure, the cooling requirement of the double-motor active damping control system is met, and the purpose of better heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model relates to shock absorption control, and more specifically, to an active shock absorption control system of dual motors. Background Art

[0002] With the advancement of the vehicle industry, the application of vibration reduction technology has become more and more extensive. Active vibration reduction technology detects the vibration frequency of the vibration reduction object, and then through a series of signal processing and calculation processing, it finally drives the actuator to apply reverse vibration to the vibration reduction object according to the detected vibration frequency to offset its vibration. Active vibration reduction technology can intervene in the vibration before it occurs or before the vibration propagates to other parts of the system, thereby achieving a more efficient vibration reduction effect. The active vibration reduction system can be adaptively adjusted according to real-time vibration signals and environmental feedback information. This means that it can be optimized in real time according to the changes in vibration and the dynamic characteristics of the system to achieve the best vibration reduction effect.

[0003] Most of the existing active vibration reduction control systems are driven by multiple single motor controllers and realize the differential function through the electronic differential integrated in the vehicle controller VCU. The control signal needs to be transmitted through the external controller local area network, which has a slow real-time response, slow signal processing and calculation processing speed, and it is difficult to achieve active vibration reduction control.

[0004] To solve the problem of vehicle shaking, the relevant technology provides an active shock absorption control system based on dual motors, which breaks through the vibration reduction effect of existing technologies. The dual motor active shock absorption control system can share the load and increase the total output power by controlling two motors at the same time, thereby improving the dynamic response performance of the system.

[0005] The active damping control system of the dual motor is mainly composed of an input module, a control module, a drive module, a power supply module, a collection module and an implementation module. Among them, the input module is composed of a first connector and an interface board. The first connector is the entrance of the input module and is used to receive various types of signal sources. The interface board, as a connector, converts the signal received by the first connector into a format suitable for processing by the control module. After receiving the external signal, the input enters it into the control module.

[0006] The control module includes a filter and a controller, and the controller includes a memory, a processor, and a computer program stored in the memory. The filter uses a first low-pass filter and a second low-pass filter to filter the rotation speed, respectively, to obtain a first filtered rotation speed and a second filtered rotation speed for subsequent calculations. When the computer program is executed by the processor, the active vibration reduction control method is implemented and a control signal is output.

[0007] The driving module includes two driving units, the first processor controls the first driving unit, and the second processor controls the second driving unit. The driving unit includes an IGBT module and a driving board, wherein the driving board amplifies the received first control signal, that is, the driving board acts as an amplifying circuit, and the first control signal is amplified by the driving board to become a second control signal, and the driving board inputs the second control signal into the IGBT module, and after receiving the second control signal, the IGBT module controls the motor based on the signal.

[0008] The power supply module includes a capacitor and an EMC board. The capacitor is fixedly mounted on the shell. Silicone grease is applied on the contact surface between the capacitor and the shell to facilitate heat dissipation of the capacitor. The external DC is connected to the capacitor through a copper busbar, and the capacitor supplies power to the input module, control module and drive module through the copper busbar.

[0009] The acquisition module consists of multiple speed sensors that can accurately collect the motor speed in real time. Through high-precision measurement and data recording, the acquisition module can reliably transmit the speed data to the input module for further processing and analysis.

[0010] The implementation module consists of a motor, which is controlled according to the signal from the dual motor controller. The control signal is sent to the motor driver or motor controller to adjust the working state of the motor. According to the requirements of the control signal, the motor can adjust parameters such as speed, torque or position to achieve active compensation of vibration.

[0011] However, when the active shock absorption control system adopts dual motors, the heat generated during operation will also increase, especially the IGBT module as the main heat source. Conventional radiators can hardly meet the heat dissipation requirements of the IGBT module and the motor. Utility Model Content

[0012] The technical problem to be solved by the utility model is to provide an active shock absorption control system for dual motors in view of the deficiencies in the prior art, so as to meet the cooling requirements of the active shock absorption control system for dual motors and achieve a better heat dissipation effect.

[0013] The utility model discloses a dual-motor active damping control system, comprising an input module, a control module, a drive module, a power supply module, a collection module and an implementation module; the drive module comprises two drive boards and two IGBT modules connected to the drive boards in a one-to-one correspondence; the implementation module comprises two motors, the two IGBT modules adopt an upper and lower stacking structure, a grid-type cooling water jacket in contact with the surfaces of the two IGBT modules is provided between the two IGBT modules, and the peripheries of the two motors are both provided with spiral cooling pipes in contact with the surfaces thereof; wherein,

[0014] A water channel network consisting of multiple water channels is provided in the grid-type cooling water jacket, and the multiple water channels are interconnected. At least two water inlet channels are provided at one end of the grid-type cooling water jacket, and the water inlet channels are connected to the water channel network, and the water inlet channels and the water channels with the same axial direction are staggered. A water outlet channel is provided at the other end of the grid-type cooling water jacket, and the water inlet channel is located above the water outlet channel.

[0015] Preferably, the cross-sectional area of ​​the water outlet channel is greater than or equal to the sum of the cross-sectional areas of the water inlet channels.

[0016] Preferably, one side of the grid-type cooling water jacket is provided with an extended heat sink that is an integral structure therewith, and both end surfaces of the extended heat sink are provided with fins that are an integral structure therewith.

[0017] Preferably, the grid-type cooling water jacket is made of copper or aluminum.

[0018] Preferably, both end surfaces of the grid-type cooling water jacket are provided with positioning grooves, and the IGBT module is fixedly installed in the positioning grooves by bolts.

[0019] Preferably, thermal conductive silicone grease is provided between the IGBT module and the grid-type cooling water jacket.

[0020] Preferably, heat-conducting silica gel is provided between the spiral cooling tube and the motor.

[0021] Beneficial Effects

[0022] The advantages of the utility model are:

[0023] 1. The two IGBT modules of this system adopt an upper and lower stacking structure, and a grid-type cooling water jacket is provided between the two IGBT modules, which is in contact with the surfaces of the two IGBT modules at the same time. This can greatly reduce the problem of excessive space occupation caused by the IGBT modules and their heat dissipation components. In addition, the water jacket design is used to achieve cooling, and the IGBT module is dissipated by the cooling medium flowing in the grid-type cooling water jacket, which can effectively reduce the temperature of the system. This heat dissipation method can achieve uniform flow of coolant throughout the main heat source while keeping the cooling pipeline simple, and provide a larger coolant contact area, increase heat transfer efficiency, and achieve better heat dissipation effect. Compared with the traditional radiator heat dissipation method, the heat dissipation method using a water jacket helps to effectively cool the IGBT module, keep its temperature within an acceptable range, and improve the reliability of control.

[0024] In addition, the periphery of the two motors is provided with a spiral cooling pipe in contact with their surface, which can maximize the length of the pipe and reduce the space occupied by the pipe, thereby meeting the cooling requirements to the greatest extent.

[0025] 2. The height of the water outlet channel is lower than that of the waterway network, which cleverly utilizes the coolant's own gravity and the coolant supply pressure to ensure the fluidity of the coolant in the waterway network and reduce the obstacles to the coolant flow caused by the criss-crossing waterways in the waterway network. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the active vibration reduction control system of the dual motors of the utility model;

[0027] Figure 2 This is a schematic diagram of the top view of the grid-type cooling water jacket of the utility model;

[0028] Figure 3 It is a schematic diagram of the side structure of the grid-type cooling water jacket of the utility model;

[0029] Figure 4 This is a schematic diagram of the internal top view of the grid-type cooling water jacket of the utility model;

[0030] Figure 5 It is a schematic diagram of the internal side view structure of the grid-type cooling water jacket of the utility model;

[0031] Figure 6 This is a schematic diagram of the installation structure of the spiral cooling pipe of the utility model.

[0032] Among them: 1-input module, 2-control module, 3-drive module, 4-power supply module, 5-acquisition module, 6-implementation module, 7-grid cooling water jacket, 8-water inlet channel, 9-water channel, 10-water outlet channel, 11-extended heat sink, 12-fin, 13-positioning groove, 14-motor, 15-spiral cooling pipe. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the embodiments, but does not constitute any limitation to the utility model. Any limited modifications made by anyone within the scope of the claims of the utility model are still within the scope of the claims of the utility model.

[0034] See also Figure 1-Figure 6 The utility model is a dual-motor active damping control system, comprising an input module 1, a control module 2, a drive module 3, a power supply module 4, a collection module 5 and an implementation module 6. The drive module 3 comprises two drive boards and two IGBT modules connected to the drive boards in a one-to-one correspondence, and the implementation module 6 comprises two motors 14. In this embodiment, the control signal between the drive module 3 and the control module 2 adopts a board-level communication method, and the board-level communication can greatly improve the real-time response speed of the drive module 3 to the first control signal, thereby effectively improving the electronic differential response of the vehicle.

[0035] The two IGBT modules adopt an upper and lower stacking structure, and a grid-type cooling water jacket 7 is provided between the two IGBT modules, which is in contact with the surfaces of the two IGBT modules at the same time. This can greatly reduce the problem of excessive space occupation caused by the IGBT modules and their heat dissipation components. In addition, the water jacket design is used to achieve cooling, and the IGBT module is dissipated by the cooling medium flowing in the grid-type cooling water jacket 7, which can effectively reduce the temperature of the system. This heat dissipation method can achieve uniform flow of the coolant in the entire main heat source while keeping the cooling pipeline simple, and provide a larger coolant contact area, increase the heat transfer efficiency, and achieve a better heat dissipation effect. Compared with the traditional radiator heat dissipation method, the heat dissipation method using a water jacket helps to effectively cool the IGBT module, so that its temperature is controlled within an acceptable range, and can improve the reliability of control.

[0036] In this embodiment, the specific structure of the grid cooling water jacket 7 is as follows: the grid cooling water jacket 7 is made of aluminum, which has good thermal conductivity and is more economical than copper. A waterway network consisting of multiple waterways 9 is provided in the grid cooling water jacket 7, and the waterways 9 are crisscrossed and interconnected. Two water inlet channels 8 are provided at one end of the grid cooling water jacket 7, and the water inlet channels 8 are connected to the waterway network. In order to ensure the uniformity of the coolant entering the waterway network, the water inlet channel 8 of this embodiment and the waterway 9 with the same axial direction are staggered to prevent the coolant from directly entering the waterway 9 with the same axial direction from the water inlet channel, resulting in a small amount of coolant entering other waterways 9. A water outlet channel 10 connected to the waterway network is provided at the other end of the grid cooling water jacket 7, and the water inlet channel 8 is located above the water outlet channel 10, and the height position of the water outlet channel 10 is also lower than the height position of the waterway network. Since the height of the water outlet channel 10 is lower than that of the water inlet channel 8, the coolant's own gravity and the coolant supply pressure can be used to ensure the fluidity of the coolant in the waterway network and reduce the obstruction of the criss-crossing waterways 9 in the waterway network to the flow of the coolant.

[0037] In this embodiment, the cross-sectional area of ​​the water outlet channel 10 is greater than the sum of the cross-sectional areas of the water inlet channels. Specifically, the water outlet channel 10 can be set to be 3 / 2 of the total cross-sectional area of ​​the water inlet channel 8 to ensure the maximum water output of the water outlet channel 10 and avoid the problem of obstruction of the coolant in the grid cooling water jacket 7 due to its too small water output.

[0038] An extended heat sink 11 is provided on one side of the grid cooling water jacket 7, and fins 12 are provided on both ends of the extended heat sink 11. The IGBT module retains the traditional heat sink cooling on the basis of water jacket cooling, which can effectively improve its heat dissipation effect.

[0039] Preferably, positioning grooves 13 are provided on both end surfaces of the grid cooling water jacket 7, and the IGBT module is fixedly installed in the positioning grooves 13 by bolts, which facilitates the installation of the IGBT module. In addition, thermal conductive silicone grease is provided between the IGBT module and the grid cooling water jacket 7 to ensure the thermal conductivity between the IGBT module and the grid cooling water jacket 7.

[0040] The outer periphery of the two motors 14 is provided with a spiral cooling pipe 15 in contact with the surface thereof. The spirally arranged cooling pipe can maximize the length of the pipe. The spiral cooling pipe 15 is tightly arranged on the surface of the motor 14, reducing the space occupied by the pipe. The spiral cooling pipe 15 has high flexibility and can adjust the direction, density and shape of the spiral path according to specific needs to meet the cooling requirements to the greatest extent. Thermally conductive silicone is provided between the spiral cooling pipe 15 and the motor 14 to improve the heat transfer effect between the coolant in the spiral cooling pipe 15 and the motor 14. The thermally conductive silicone can also adhere the spiral cooling pipe 15 to the motor 14 to prevent the appearance of a gap between the spiral cooling pipe 15 and the motor 14.

[0041] The working principle of the utility model is: first, the water inlet and outlet ends of the grid cooling water jacket 7 and the spiral cooling pipe 15 are connected to the water inlet and outlet ends of the coolant supply source. When the system is working, the coolant will be respectively sent to the grid cooling water jacket 7 and the spiral cooling pipe 15, and form a cycle with the coolant supply source, and the heat exchange between the coolant and the IGBT module and the motor 14 is realized, thereby realizing the heat dissipation of the IGBT module and the motor 14. In this embodiment, the circulation supply of the coolant and the coolant supply source are both realized by using existing technologies.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A dual-motor active damping control system, comprising an input module (1), a control module (2), a drive module (3), a power supply module (4), a collection module (5) and an implementation module (6); the drive module (3) comprises two drive boards and two IGBT modules connected to the drive boards in a one-to-one correspondence; the implementation module (6) comprises two motors (14), characterized in that: The two IGBT modules adopt an upper and lower stacked structure, a grid-type cooling water jacket (7) is provided between the two IGBT modules and is in contact with the surfaces of the two IGBT modules at the same time, and the peripheries of the two motors (14) are both provided with spiral cooling pipes (15) in contact with the surfaces thereof; wherein: A water channel network consisting of a plurality of water channels (9) is provided in the grid-type cooling water jacket (7), the plurality of water channels (9) are interconnected, at least two water inlet channels (8) are provided at one end of the grid-type cooling water jacket (7), the water inlet channels (8) are connected to the water channel network, and the water inlet channels (8) and the water channels (9) having the same axial direction are arranged in a staggered manner, and a water outlet channel (10) is provided at the other end of the grid-type cooling water jacket (7), the water inlet channel (8) is located above the water outlet channel (10).

2. The dual-motor active damping control system according to claim 1, characterized in that: The cross-sectional area of ​​the water outlet channel (10) is greater than or equal to the sum of the cross-sectional areas of the water inlet channels.

3. The dual-motor active damping control system according to claim 1, characterized in that: One side of the grid-type cooling water jacket (7) is provided with an extended heat sink (11) which is an integral structure with the extended heat sink (11), and both end surfaces of the extended heat sink (11) are provided with fins (12) which are an integral structure with the extended heat sink (11).

4. The dual-motor active damping control system according to claim 1, characterized in that: The grid-type cooling water jacket (7) is made of copper or aluminum.

5. The dual-motor active damping control system according to claim 1, characterized in that: Positioning grooves (13) are provided on both end surfaces of the grid-type cooling water jacket (7), and the IGBT module is fixedly installed in the positioning grooves (13) by means of bolts.

6. A dual-motor active damping control system according to claim 5, characterized in that: Thermally conductive silicone grease is provided between the IGBT module and the grid-type cooling water jacket (7).

7. The dual-motor active damping control system according to claim 1, characterized in that: Heat-conducting silica gel is provided between the spiral cooling pipe (15) and the motor (14).

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