Motor controller and non-road mobile machine

Abstract

The utility model provides a motor controller and a non-road mobile machine. The motor controller comprises a driving board; the drive bridge arms, the drive signal ends and the switch assembly are arranged on the drive board, the number of the drive bridge arms is 3n, the number of the drive signal ends is 6n, n is a positive integer larger than or equal to 2, and the switch assembly is arranged between the drive signal ends and the drive bridge arms; and the control panel is provided with an MCU, and the MCU is used for controlling the driving signal end to send a driving signal to the corresponding driving bridge arm and controlling the switch assembly to be switched on / off, so that the motor controller works in a multi-split mode or a driving power parallel mode. According to the utility model, switching of the motor controller between a multi-split mode or a driving power parallel mode can be realized by adopting the single MCU on one driving board and one control board, so that the design cost and the assembly cost are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, and particularly relates to a motor controller and a non-road mobile machinery. Background Art

[0002] In a motor controller, the hardware part is composed of a control board, a drive board and an interface board. Generally, one drive board and one control board control a three-phase output, that is, one drive board realizes one motor drive. If dual-motor drive is to be realized, it needs to be achieved through two control boards and two drive boards.

[0003] In the related art, although there is also a technical solution to realize dual-motor control through one control board, it is necessary to use 2 MCUs (Microcontroller Unit) on one control board to output PWM (Pulse-width Modulation) to control two drive boards, and finally realize dual-motor control. This method requires two drive boards, increasing the design cost and assembly cost. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a motor controller.

[0005] The utility model also proposes a non-road mobile machinery.

[0006] The technical solution adopted by the utility model is as follows:

[0007] The utility model proposes a motor controller, including: a drive board; a drive bridge arm, a drive signal terminal and a switch component arranged on the drive board, the drive bridge arm includes 3n, the drive signal terminal includes 6n, n is a positive integer greater than or equal to 2, and the switch component is arranged between the drive signal terminal and the drive bridge arm; a control board, an MCU is arranged on the control board, and the MCU is used to control the drive signal terminal to send a drive signal to the corresponding drive bridge arm, and control the opening / closing of the switch component, so that the motor controller works in a one-drive-n mode or a drive power parallel mode. When the motor controller works in the one-drive-n mode, one drive signal terminal controls a half-bridge of one drive bridge arm. When the motor works in the drive power parallel mode, one drive signal terminal simultaneously controls the half-bridges of n drive bridge arms.

[0008] The above motor controller of the utility model also has the following additional technical features:

[0009] Specifically, the drive bridge arm includes the first to sixth drive bridge arms, the drive signal terminal includes the first to twelfth drive signal terminals, and the switch component includes the first to twenty-fourth switches.

[0010] Further, the first drive signal terminal is connected to the upper arm of the first drive leg through a first switch and a second switch connected in parallel and is connected to the upper arm of the second drive leg through a third switch. The second drive signal terminal is connected to the lower arm of the first drive leg through a fourth switch and a fifth switch connected in parallel and is connected to the lower arm of the second drive leg through a sixth switch. The third drive signal terminal is connected to the upper arm of the second drive leg through a seventh switch and is connected to the upper arm of the third drive leg through an eighth switch and is connected to the upper arm of the fourth drive leg through a ninth switch. The fourth drive signal terminal is connected to the lower arm of the second drive leg through a tenth switch and is connected to the lower arm of the third drive leg through an eleventh switch and is connected to the lower arm of the fourth drive leg through a twelfth switch. The fifth drive signal terminal is connected to the upper arm of the third drive leg through a thirteenth switch and is connected to the upper arm of the fifth drive leg through a fourteenth switch and is connected to the upper arm of the sixth drive leg through a fifteenth switch. The sixth drive signal is connected to the lower arm of the third drive leg through a sixteenth switch and is connected to the lower arm of the fifth drive leg through a seventeenth switch and is connected to the lower arm of the sixth drive leg through an eighteenth switch. The seventh drive signal is connected to the upper arm of the fourth drive leg through a nineteenth switch. The eighth drive signal terminal is connected to the lower arm of the fourth drive leg through a twentieth switch. The ninth drive signal is connected to the upper arm of the fifth drive leg through a twenty-first switch. The tenth drive signal is connected to the lower arm of the fifth drive leg through a twenty-second switch. The eleventh drive signal is connected to the upper arm of the sixth drive leg through a twenty-third switch. The twelfth drive signal is connected to the lower arm of the sixth drive leg through a twenty-fourth switch.

[0011] Specifically, each drive leg includes an IGBT module composed of 2 series-connected IGBTs.

[0012] Further, the drive signal is a PWM signal. The PWM signal includes a high-level signal and a low-level signal.

[0013] The present utility model also proposes a non-road mobile machinery, including the motor controller of the present utility model described above.

[0014] Advantages of the present utility model:

[0015] The present utility model can realize the switching between the one-drive-multiple mode or the drive power parallel mode of the motor controller by using a single MCU on a drive board and a control board, which greatly reduces the design cost and the assembly cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a circuit topology schematic diagram of a motor controller according to an embodiment of the present utility model;

[0017] Figure 2 It is a schematic diagram of the circuit topology of a motor controller according to another embodiment of the present utility model. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0019] Figure 1 It is a schematic diagram of the circuit topology of a motor controller according to an embodiment of the present utility model. Figure 2 It is a schematic diagram of the circuit topology of a motor controller according to another embodiment of the present utility model.

[0020] As Figure 1-2 shown, the motor controller includes: a drive board 100, drive bridge arms (6 are taken as an example in the figure, U1, V1, W1, U2, V2, and W2), drive signal terminals (12 are taken as an example in the figure, PWM1 - PWM12), and a switch component 200 provided on the drive board 100, and a control board. The drive bridge arms include 3n, the drive signal terminals include 6n, where n is a positive integer greater than or equal to 2. The switch component 200 is provided between the drive signal terminals and the drive bridge arms. Different drive signal terminals are connected to the upper or lower bridge arms of the drive bridge arms through the switch component 100. An MCU is provided on the control board. The MCU is used to control the drive signal terminals to send drive signals to the corresponding drive bridge arms, and to control the opening / closing of the switch component, so that the motor controller operates in a one - to - n (i.e., one - to - multiple) mode or a drive power parallel mode. When the motor controller operates in the one - to - n mode, one drive signal terminal controls the upper or lower bridge arm of one drive bridge arm. When the motor operates in the drive power parallel mode, one drive signal terminal simultaneously controls the upper or lower bridge arms of n drive bridge arms.

[0021] In the embodiments of the present utility model, each drive bridge arm includes an IGBT module composed of 2 series - connected IGBTs. The drive signal is a PWM signal, and the PWM signal includes a high - level signal and a low - level signal.

[0022] Specifically, by controlling the switch component 200, the motor controller operates in a one-driving-n mode or a driving power parallel mode. When the motor controller operates in the one-driving-n mode, one driving signal terminal controls a half-bridge of one driving bridge arm. In the one-driving-n mode, that is, controlling multiple motors to output n sets of three-phase power, and the n sets of three-phase power are independent of each other. In the one-driving-n mode, a single MCU on one driving board and one control board can control a single motor or n motors. In the driving power parallel mode, multiple sets of bridge arms are connected in parallel to increase the output current, and one path of PWM controls n bridge arms simultaneously to ensure simultaneous turning on and off. In the driving power parallel mode, when controlling the motor, the output current can be increased to output a larger power, and thus a motor with a larger driving power can be driven.

[0023] In a specific embodiment of the present invention, if n = 2, as Figure 1-2 shown, the driving bridge arm may include the first to sixth driving bridge arms (U1, V1, W1, U2, V2, and W2), the driving signal terminal includes the first to twelfth driving signal terminals PWM1 - PWM12, and the switch component 200 includes the first to twenty-fourth switches K1 - K24.

[0024] Among them, the first driving signal terminal PWM1 is connected to the upper arm of the first driving bridge arm U1 through the first switch K1 and the second switch K2 connected in parallel, and is connected to the upper arm of the second driving bridge arm V1 through the third switch K3. The second driving signal PWM2 terminal is connected to the lower arm of the first driving bridge arm U1 through the fourth switch K4 and the fifth switch K5 connected in parallel, and is connected to the lower arm of the second driving bridge arm V1 through the sixth switch K6. The third driving signal PWM3 terminal is connected to the upper arm of the second driving bridge arm V1 through the seventh switch K7, is connected to the upper arm of the third driving bridge arm W1 through the eighth switch K8, and is connected to the upper arm of the fourth driving bridge arm U2 through the ninth switch K9. The fourth driving signal PWM4 terminal is connected to the lower arm of the second driving bridge arm V1 through the tenth switch, is connected to the lower arm of the third driving bridge arm W1 through the eleventh switch K11, and is connected to the lower arm of the fourth driving bridge arm U2 through the twelfth switch K12. The fifth driving signal terminal PWM5 is connected to the upper arm of the third driving bridge arm W1 through the thirteenth switch K13, is connected to the upper arm of the fifth driving bridge arm V2 through the fourteenth switch K14, and is connected to the upper arm of the sixth driving bridge arm W2 through the fifteenth switch K15. The sixth driving signal terminal PWM6 is connected to the lower arm of the third driving bridge arm W1 through the sixteenth switch K16, is connected to the lower arm of the fifth driving bridge arm V2 through the seventeenth switch K17, and is connected to the lower arm of the sixth driving bridge arm W2 through the eighteenth switch K18. The seventh driving signal terminal PWM7 is connected to the upper arm of the fourth driving bridge arm U2 through the nineteenth switch K19. The eighth driving signal terminal PWM8 is connected to the lower arm of the fourth driving bridge arm U2 through the twentieth switch K20. The ninth driving signal terminal PWM9 is connected to the upper arm of the fifth driving bridge arm V2 through the twenty-first switch K21. The tenth driving signal terminal PWM10 is connected to the lower arm of the fifth driving bridge arm V2 through the twenty-second switch K22. The eleventh driving signal terminal PWM11 is connected to the upper arm of the sixth driving bridge arm W2 through the twenty-third switch K23. The twelfth driving signal terminal PWM12 is connected to the lower arm of the sixth driving bridge arm W2 through the twenty-fourth switch K24.

[0025] Specifically, the driving bridge arm is composed of two IGBTs connected in series to form a bridge arm. PWM1 to PWM12 are the driving signals of 12 IGBTs. Suitable driving devices are arranged between PWM and the IGBT gate, and they are all generated by the same MCU. The intermediate switches K1-K24 are controlled to conduct through the MCU. When the MCU control pin outputs a low level, K1, K4, K7, K10, K13, K16, K19, K20, K21, K22, K23, and K24 are closed. When the output is a high level, K2, K5, K3, K6, K8, K11, K9, K12, K14, K17, K15, and K18 are closed, realizing the software and hardware compatibility of the motor controller working in a one-drive-two mode or a drive power parallel mode.

[0026] As Figure 1 shown, in the one-driving-two mode, that is, controlling two motors and outputting two sets of three-phase power. At this time, the phase sequence from left to right is (U1, V1, W1, U2, V2, W2). At this time, the control pin outputs a low level, and K1, K4, K7, K10, K13, K16, K19, K20, K21, K22, K23 and K24 are closed. PWM1 - PWM6 control the first set of three-phase power (U1, V1, W1), and PWM7 to PWM12 control the second set of three-phase power (U2, V2, W2). The two sets of three-phase power are independent of each other. In the one-driving-two mode, a single MCU on one driving board and one control board can control both single motor and double motors.

[0027] As Figure 2 shown, in the driving power parallel mode, IGBTs are paralleled to increase the output current. The switch control pin outputs a high level, and K2, K5, K3, K6, K8, K11, K9, K12, K14, K17, K15 and K18 are closed. U1 and V1 are paralleled to form U phase, W1 and U2 are paralleled to form V phase, and V2 and W2 are paralleled to form W phase. PWM1 and PWM2 control U phase, PWM3 and PWM4 control V phase, and PWM5 and PWM6 control W phase. One-way PWM controls two bridge arms simultaneously to ensure simultaneous turning on and off. In the driving power parallel mode, when controlling the motor, the output current can be increased, and a greater power can be output, so as to drive a motor with a greater power.

[0028] In summary, for the motor controller according to the embodiment of the present invention, different drive signal terminals are connected to the upper bridge arm or the lower bridge arm of the drive bridge through different switches; the MCU arranged on the control board controls the switch component to enable the motor controller to work in the one-driving-multiple mode or the driving power parallel mode. The present invention can realize the switching between the one-driving-multiple mode and the driving power parallel mode of the motor controller by using a single MCU on one driving board and one control board, which greatly reduces the design cost and the assembly cost.

[0029] In addition, the present invention also provides a non-road mobile machine, including the motor controller of the present invention as described above.

[0030] A non-road mobile machine refers to a mobile machine that does not travel on a road, mainly including construction machinery, agricultural machinery, small general machinery, etc.

[0031] For the non-road mobile machine according to the present invention, through the above-mentioned motor controller, the switching between the one-driving-multiple mode and the driving power parallel mode of the motor controller can be realized by using a single MCU on one driving board and one control board, which greatly reduces the design cost and the assembly cost.

[0032] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0033] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0035] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A motor controller, characterized in that, Comprising: A drive board; A drive bridge arm, a drive signal terminal, and a switch component disposed on the drive board. There are 3n drive bridge arms and 6n drive signal terminals, where n is a positive integer greater than or equal to 2. The switch component is disposed between the drive signal terminal and the drive bridge arm, and different drive signal terminals are connected to the upper bridge arm or the lower bridge arm of the drive bridge arm through the switch component; A control board, on which an MCU is disposed. The MCU is used to control the drive signal terminal to send a drive signal to the corresponding drive bridge arm and control the opening / closing of the switch component, so that the motor controller operates in a one-drive-n mode or a drive power parallel mode.

2. The motor controller according to claim 1, characterized in that, The drive bridge arm includes a first to a sixth drive bridge arm, the drive signal terminal includes a first to a twelfth drive signal terminal, and the switch component includes a first to a twenty-fourth switch.

3. The motor controller according to claim 2, characterized in that, Wherein, The first drive signal terminal is connected to the upper bridge arm of the first drive bridge arm through the parallel-connected first switch and second switch and is connected to the upper bridge arm of the second drive bridge arm through the third switch. The second drive signal terminal is connected to the lower bridge arm of the first drive bridge arm through the parallel-connected fourth switch and fifth switch and is connected to the lower bridge arm of the second drive bridge arm through the sixth switch. The third drive signal terminal is connected to the upper bridge arm of the second drive bridge arm through the seventh switch, is connected to the upper bridge arm of the third drive bridge arm through the eighth switch, and is connected to the upper bridge arm of the fourth drive bridge arm through the ninth switch. The fourth drive signal terminal is connected to the lower bridge arm of the second drive bridge arm through the tenth switch, is connected to the lower bridge arm of the third drive bridge arm through the eleventh switch, and is connected to the lower bridge arm of the fourth drive bridge arm through the twelfth switch. The fifth drive signal terminal is connected to the upper bridge arm of the third drive bridge arm through the thirteenth switch, is connected to the upper bridge arm of the fifth drive bridge arm through the fourteenth switch, and is connected to the upper bridge arm of the sixth drive bridge arm through the fifteenth switch. The sixth drive signal terminal is connected to the lower bridge arm of the third drive bridge arm through the sixteenth switch, is connected to the lower bridge arm of the fifth drive bridge arm through the seventeenth switch, and is connected to the lower bridge arm of the sixth drive bridge arm through the eighteenth switch.

4. The motor controller according to claim 3, wherein Wherein, The seventh drive signal terminal is connected to the upper bridge arm of the fourth drive bridge arm through the nineteenth switch. The eighth drive signal terminal is connected to the lower bridge arm of the fourth drive bridge arm through the twentieth switch. The ninth drive signal terminal is connected to the upper bridge arm of the fifth drive bridge arm through the twenty-first switch. The tenth drive signal terminal is connected to the lower bridge arm of the fifth drive bridge arm through the twenty-second switch. The eleventh drive signal terminal is connected to the upper bridge arm of the sixth drive bridge arm through the twenty-third switch. The twelfth drive signal terminal is connected to the lower bridge arm of the sixth drive bridge arm through the twenty-fourth switch.

5. The motor controller according to claim 1, characterized in that Each drive bridge arm includes an IGBT module composed of 2 series-connected IGBTs.

6. The motor controller according to claim 1, characterized in that The drive signal is a PWM signal.

7. The motor controller according to claim 6, characterized in that, The PWM signal includes a high-level signal and a low-level signal.

8. An off-road mobile machine, characterized in that, Including the motor controller according to any one of claims 1-7.

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