Integrated motor controller, driving system and vehicle

Abstract

An integrated motor controller (1), a driving system and a vehicle. The integrated motor controller (1) comprises a control board (100), a driving board (200), a DCDC converter (300) and a DCDC redundancy protection circuit (400). A third end of the DCDC converter (300) is used for connecting to an output end of a vehicle high-voltage battery (20), so that the DCDC converter (300) can charge a vehicle low-voltage battery (10) during working. A second end of the DCDC converter (300) is further connected to a first end of the DCDC redundancy protection circuit (400), and a second end of the DCDC redundancy protection circuit (400) is connected to a first end of the control board (100).

Description

Integrated motor controller, drive system and vehicle

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410796422.8, filed on June 19, 2024, entitled "Integrated Motor Controller, Drive System and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of automotive technology, and more particularly to an integrated motor controller, drive system, and vehicle. Background Technology

[0004] In the power system of electric vehicles, the motor controller plays a crucial role. Based on commands such as gear selection, throttle input, and braking, the motor controller converts the electrical energy stored in the battery into the electrical energy required to drive the motor, controlling the vehicle's starting, running, speed, and climbing ability. However, in practical use, a continuous low-voltage power supply is required to maintain the motor controller's normal operation. If a low-voltage power supply anomaly or a power outage occurs, the motor controller will lack power to continue operating, directly causing abnormal vehicle driving and resulting in the entire vehicle losing power.

[0005] Therefore, in response to the above situation, how to maintain the normal operation of the drive motor controller and thus ensure the normal operation of the vehicle when the low-voltage power supply to the motor controller is abnormal or there is a power failure is an urgent problem that needs to be solved.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] The main objective of this application is to propose an integrated motor controller, drive system, and vehicle. By incorporating a DC-DC (Direct Current-to-Direct Current) converter and a DC-DC redundant protection circuit, the control board can be powered by redundant power output from the DC-DC converter in the event of a low-voltage power supply anomaly or power failure. This improves the reliability of the integrated motor controller's low-voltage power supply and is cost-effective.

[0008] According to one aspect of the embodiments of this application, an integrated motor controller is provided for electrical connection with a motor to control the motor. The integrated motor controller includes a control board, a drive board, a DC-DC converter, and a DC-DC redundancy protection circuit.

[0009] The first end of the control board is used to connect to the output end of the vehicle's low-voltage battery, and the second end of the control board is connected to the first end of the drive board.

[0010] The first terminal of the DC-DC converter is used to connect to the output terminal of the vehicle's low-voltage battery. The second terminal of the DC-DC converter is used to connect to the input terminal of the vehicle's low-voltage battery. The second terminal of the DC-DC converter is also connected to the first terminal of the DC-DC redundancy protection circuit. The second terminal of the DC-DC redundancy protection circuit is connected to the first terminal of the control board. The third terminal of the DC-DC converter is used to connect to the output terminal of the vehicle's high-voltage battery.

[0011] In this embodiment, by connecting the third terminal of the DC-DC converter to the output terminal of the vehicle's high-voltage battery and the second terminal of the DC-DC converter to the control board, redundant power can be supplied to the control board via the DC-DC converter in case of low-voltage power supply abnormality or power failure. Simultaneously, by connecting a DC-DC redundancy protection circuit between the second terminal of the DC-DC converter and the first terminal of the control board, the circuit can disconnect and protect against short circuits or overcurrents in the wiring between the DC-DC converter and the control board, thereby improving the reliability of the low-voltage power supply to the integrated motor controller. Furthermore, integrating the DC-DC converter into the integrated motor controller reduces the cost of using the DC-DC converter output as a redundancy solution, eliminating the need to increase the cost of the vehicle wiring harness. The redundant power supply loop integrated into the integrated motor controller is shorter, requiring only a lower-cost power wiring harness.

[0012] In some embodiments of this application, the control board includes an input control circuit, a voltage regulator circuit, and a subsequent control circuit;

[0013] The first terminal of the input control circuit serves as the first terminal of the control board, used to connect the output terminal of the vehicle's low-voltage battery and the second terminal used to connect the DC-DC redundancy protection circuit.

[0014] The second terminal of the input control circuit is connected to the first terminal of the voltage regulator circuit, the second terminal of the voltage regulator circuit is connected to the first terminal of the subsequent control circuit, and the second terminal of the subsequent control circuit is connected to the driver board.

[0015] In this embodiment, the control board includes an input control circuit, a voltage regulator circuit, and a subsequent control circuit. The input control circuit is used to control the power supply to the control board. The voltage regulator circuit is connected to the input control circuit and can regulate the output of the input control circuit before transmitting it to the subsequent control circuit, thereby providing a stable power supply to the subsequent control circuit.

[0016] In some embodiments of this application, the control board further includes a wake-up circuit, the first terminal of which is connected to the second terminal of the DCDC redundancy protection circuit, and the first terminal of the wake-up circuit is also used to connect to the output terminal of the vehicle's low-voltage battery.

[0017] The second terminal of the wake-up circuit is used to connect to the output terminal of the vehicle start switch to receive the hardware wake-up signal output by the vehicle start switch;

[0018] The third terminal of the wake-up circuit is used to connect to the output terminal of the vehicle communication system to receive the network wake-up signal output by the vehicle communication system.

[0019] The fourth terminal of the wake-up circuit is connected to the third terminal of the input control circuit.

[0020] In this embodiment, by setting a wake-up circuit in the control board and connecting the wake-up circuit to the input control circuit, the input control circuit can determine whether to supply power based on the wake-up signal input by the wake-up circuit. When power is not needed, the control board can be de-energized, thereby reducing power consumption.

[0021] In some embodiments of this application, the downstream control circuit includes a power supply protection circuit, a power control circuit, and a main control circuit;

[0022] The first terminal of the power supply protection circuit is connected to the second terminal of the voltage regulator circuit, the second terminal of the power supply protection circuit is connected to the first terminal of the power control circuit, and the power supply protection circuit is also connected to the driver board.

[0023] The second terminal of the power control circuit is connected to the first terminal of the main control circuit. The power control circuit is also connected to the driver board, and the main control circuit is also connected to the driver board.

[0024] In this embodiment, the power supply protection circuit is connected to the voltage regulator circuit, which can provide timely protection when abnormal input voltage or current is detected, thereby improving power supply stability. The power control circuit can process the electrical signal output by the power supply protection circuit and control whether to supply power to the main control circuit, thus ensuring effective control of the motor by the main control circuit.

[0025] In some embodiments of this application, the subsequent control circuit further includes a resolver circuit, the first terminal of which is connected to the third terminal of the power supply protection circuit, and the second terminal of which is connected to the third terminal of the power control circuit.

[0026] In this embodiment, the output of the power supply protection circuit supplies power to the resolver circuit via the power loop. At the same time, the power control circuit can also supply power to the resolver circuit, thereby ensuring the normal operation of the resolver circuit.

[0027] In some embodiments of this application, the driver board includes a lower bridge driver power module, an upper bridge driver power module, a lower bridge driver circuit, and an upper bridge driver circuit.

[0028] The first terminal of the lower bridge drive power module is connected to the fourth terminal of the power supply protection circuit, the second terminal of the lower bridge drive power module is connected to the second terminal of the main control circuit, and the third terminal of the lower bridge drive power module is connected to the first terminal of the lower bridge drive circuit.

[0029] The first terminal of the upper bridge drive power module is connected to the fourth terminal of the power supply protection circuit, the second terminal of the upper bridge drive power module is connected to the third terminal of the main control circuit, and the third terminal of the upper bridge drive power module is connected to the first terminal of the upper bridge drive circuit.

[0030] The second terminal of the lower bridge drive circuit is connected to the fourth terminal of the main control circuit, and the second terminal of the upper bridge drive circuit is connected to the fifth terminal of the main control circuit.

[0031] In this embodiment, the lower bridge drive power module and the upper bridge drive power module control whether to output drive power through the signal output by the main control circuit, which can avoid unnecessary power consumption and reduce the risk of unexpected operation of the drive circuit.

[0032] In some embodiments of this application, the integrated motor controller further includes a lower bridge power module and an upper bridge power module;

[0033] The first terminal of the lower bridge power module and the first terminal of the upper bridge power module are both used to connect to the output terminal of the vehicle's high-voltage battery; the second terminal of the lower bridge power module is connected to the third terminal of the lower bridge drive circuit, and the second terminal of the upper bridge power module is connected to the third terminal of the upper bridge drive circuit; the third terminals of the lower bridge power module and the third terminal of the upper bridge power module are both connected to the motor.

[0034] In this embodiment, by setting up a lower bridge power module and an upper bridge power module, after the lower bridge power module and the upper bridge power module receive the driving voltage output by the corresponding lower bridge drive circuit and the upper bridge drive circuit, and after the high voltage power supply output by the vehicle high voltage battery enters the lower bridge power module and the upper bridge power module, a three-phase UVW voltage can be output, thereby driving the motor to rotate.

[0035] In some embodiments of this application, the fourth terminal of the lower bridge power module is connected to the fourth terminal of the lower bridge drive circuit, and is used to send a first short-circuit protection signal to the lower bridge drive circuit when a short circuit occurs.

[0036] The fourth terminal of the upper bridge power module is connected to the fourth terminal of the upper bridge drive circuit, and is used to send a second short-circuit protection signal to the upper bridge drive circuit when a short circuit occurs.

[0037] In this embodiment, when a short circuit occurs in the lower bridge power module, a first short-circuit protection signal is sent to the lower bridge drive circuit, causing the lower bridge drive circuit to stop outputting signals to the lower bridge power module, thereby turning off the lower bridge power module and preventing it from burning out. Similarly, when a short circuit occurs in the upper bridge power module, a second short-circuit protection signal is sent to the upper bridge drive circuit, causing the upper bridge drive circuit to stop outputting signals to the upper bridge power module, thereby turning off the upper bridge power module and preventing it from burning out.

[0038] In some embodiments of this application, the subsequent control circuit further includes a low-dropout linear regulator circuit, the first terminal of which is connected to the fourth terminal of the power supply protection circuit.

[0039] The second terminal of the low-dropout linear regulator circuit is connected to the fifth terminal of the lower bridge drive circuit; correspondingly, the fifth terminal of the upper bridge drive circuit is connected to the third terminal of the power control circuit.

[0040] Alternatively, the second terminal of the low-dropout linear regulator circuit is connected to the fifth terminal of the upper bridge drive circuit; correspondingly, the fifth terminal of the lower bridge drive circuit is connected to the fourth terminal of the power control circuit.

[0041] Alternatively, the second terminal of the low-dropout linear regulator circuit is connected to the fifth terminal of the upper bridge drive circuit and the fifth terminal of the lower bridge drive circuit, and the fourth terminal of the power control circuit is connected to the fifth terminal of the upper bridge drive circuit and the fifth terminal of the lower bridge drive circuit.

[0042] In this embodiment, the primary-side power supply of the lower bridge drive circuit is supplied by a low-dropout linear regulator circuit after voltage conversion, and the primary-side power supply of the upper bridge drive circuit is supplied by the voltage output of the power control circuit; or the primary-side power supply of the upper bridge drive circuit is supplied by a low-dropout linear regulator circuit after voltage conversion, and the primary-side power supply of the lower bridge drive circuit is supplied by the voltage output of the power control circuit; or the primary-side power supplies of both the upper and lower bridge drive circuits are supplied by a low-dropout linear regulator circuit after voltage conversion and by the voltage output of the power control circuit. By adopting different power supply schemes to provide the primary-side power supply of the upper and lower bridge drive circuits, the risk of common-cause failure of the upper and lower bridge drive circuits can be reduced.

[0043] In some embodiments of this application, the lower bridge drive power module includes a lower bridge drive power control circuit and a first transformer. The first terminal of the lower bridge drive power control circuit is connected to the fourth terminal of the power supply protection circuit, the second terminal of the lower bridge drive power control circuit is connected to the first terminal of the first transformer, the second terminal of the first transformer is connected to the fourth terminal of the power supply protection circuit, and the third terminal of the first transformer is connected to the first terminal of the lower bridge drive circuit. Correspondingly, the fifth terminal of the upper bridge drive circuit is connected to the fourth terminal of the power control circuit.

[0044] Alternatively, the upper bridge drive power module includes an upper bridge drive power control circuit and a second transformer. The first terminal of the upper bridge drive power control circuit is connected to the fourth terminal of the power supply protection circuit, the second terminal of the upper bridge drive power control circuit is connected to the first terminal of the second transformer, the second terminal of the second transformer is connected to the fourth terminal of the power supply protection circuit, and the third terminal of the second transformer is connected to the first terminal of the upper bridge drive circuit. Correspondingly, the fifth terminal of the lower bridge drive circuit is connected to the fourth terminal of the power control circuit.

[0045] In this embodiment, the primary-side power supply of the lower bridge drive circuit can also be provided by a lower bridge drive power control circuit and a transformer. Correspondingly, the primary-side power supply of the upper bridge drive circuit is provided by the voltage output of the power control circuit. Again, by using different power supplies, the risk of common-cause failure between the upper and lower bridge drive circuits can be reduced. Alternatively, the primary-side power supply of the upper bridge drive circuit can also be provided by an upper bridge drive power control circuit and a transformer. Correspondingly, the primary-side power supply of the lower bridge drive circuit is provided by the voltage output of the power control circuit. Again, by using different power supplies, the risk of common-cause failure between the upper and lower bridge drive circuits can be reduced.

[0046] In some embodiments of this application, the drive board includes an isolation sampling module, the first end of which is used to connect to the output terminal of the vehicle's high-voltage battery, and the second end of which is connected to the sixth terminal of the main control circuit.

[0047] In this embodiment, the voltage output from the vehicle's high-voltage battery after passing through the isolation sampling module enters the main control circuit, enabling the main control circuit to execute software protection mechanisms based on these voltage signals.

[0048] In some embodiments of this application, the integrated motor controller further includes a current sampling device, the first end of which is connected to the third end of the lower bridge power module and the third end of the upper bridge power module, and the second end of which is connected to the seventh end of the main control circuit.

[0049] In this embodiment, the three-phase currents output by the lower bridge power module and the upper bridge power module can be collected by the current sampling device. These current signals enter the main control circuit, so that the main control circuit can execute the software protection mechanism according to these current signals.

[0050] In some embodiments of this application, the DC-DC redundancy protection circuit is integrated into the control board.

[0051] In this embodiment, the DC-DC redundancy protection circuit is integrated into the control board, eliminating the need for additional circuit board or mounting structures, thus reducing the cost of the redundancy solution.

[0052] In some embodiments of this application, when the low-voltage battery of the vehicle is powered normally, the DCDC redundancy protection circuit is disconnected, so that the voltage output by the DCDC converter does not enter the control board for power supply.

[0053] When the low-voltage battery power supply of the vehicle is abnormal, the DCDC redundancy protection circuit is activated, so that the voltage output by the DCDC converter enters the control board for redundant power supply.

[0054] Alternatively, when the voltage output by the vehicle's low-voltage battery is greater than or equal to the voltage output by the DC-DC redundant protection circuit, the control board is powered by the voltage output by the vehicle's low-voltage battery.

[0055] When the voltage output by the vehicle's low-voltage battery is less than the voltage output by the DC-DC redundancy protection circuit, the voltage output by the DC-DC redundancy protection circuit powers the control board.

[0056] To achieve the above objectives, a second aspect of the present application provides a drive system including a motor, a reducer, and an integrated motor controller according to some embodiments of the present application.

[0057] To achieve the above objectives, a third aspect of the present application provides a vehicle including the drive system provided in the second aspect of the present application.

[0058] In the technical solution provided in this application embodiment, the integrated motor controller includes a control board, a drive board, a DC-DC converter, and a DC-DC redundancy protection circuit. The control board is electrically connected to the drive board. A first terminal of the control board is connected to the output terminal of the vehicle's low-voltage battery, allowing the low-voltage battery to supply low-voltage power to the control board. A first terminal of the DC-DC converter is connected to the output terminal of the vehicle's low-voltage battery, a second terminal is connected to the input terminal of the vehicle's low-voltage battery, and a third terminal is connected to the output terminal of the vehicle's high-voltage battery, allowing the DC-DC converter to charge the vehicle's low-voltage battery during operation. The second terminal of the DC-DC converter is also connected to the first terminal of the DC-DC redundancy protection circuit, which in turn is connected to the first terminal of the control board. This allows the DC-DC converter to output redundant power to supply power to the control board in case of low-voltage power supply abnormalities or power failure. Furthermore, the DC-DC redundancy protection circuit can disconnect the circuit in case of a short circuit or overcurrent in the line between the DC-DC converter and the control board, thereby improving the reliability of the low-voltage power supply to the integrated motor controller. Furthermore, integrating the DC-DC converter into the integrated motor controller makes the DC-DC converter output a lower-cost redundancy solution, eliminating the need to increase the cost of the vehicle wiring harness. The redundant power supply circuit integrated into the integrated motor controller is shorter, requiring only the addition of a lower-cost power wiring harness.

[0059] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0060] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0061] Figure 1 is a schematic diagram of the first structure of the integrated motor controller provided in Embodiment 1 of this application;

[0062] Figure 2 is a schematic diagram of the second structure of the integrated motor controller provided in Embodiment 2 of this application;

[0063] Figure 3 is a schematic diagram of the third structure of the integrated motor controller provided in Embodiment 3 of this application;

[0064] Figure 4 is a schematic diagram of the fourth structure of the integrated motor controller provided in Embodiment 4 of this application;

[0065] Figure 5 is a fifth structural schematic diagram of the integrated motor controller provided in Embodiment 5 of this application;

[0066] Figure 6 is a sixth structural schematic diagram of the integrated motor controller provided in Embodiment 6 of this application;

[0067] Figure 7 is a seventh structural schematic diagram of the integrated motor controller provided in Embodiment 7 of this application;

[0068] Figure 8 is a schematic diagram of the eighth structure of the integrated motor controller provided in Embodiment 8 of this application;

[0069] Figure 9 is a ninth structural schematic diagram of the integrated motor controller provided in Embodiment 9 of this application;

[0070] Figure 10 is a tenth structural schematic diagram of the integrated motor controller provided in Embodiment 10 of this application.

[0071] Explanation of reference numerals in the attached diagram: Integrated motor controller-1; Control board-100; Drive board-200; DC-DC converter-300; DC-DC redundancy protection circuit- 400; Lower bridge power module - 500; Upper bridge power module - 600; Current sampling device - 700; Input control circuit - 110; Voltage regulator circuit - 120; Post-stage control circuit - 130; Power supply protection circuit - 131; Power control circuit - 132; Main control circuit - 133; Resolver circuit - 134; Low dropout linear regulator circuit - 135; Lower bridge drive power module - 210; Upper bridge drive power module - 220; Lower bridge drive circuit - 230; Upper bridge drive circuit - 240; Isolation sampling module - 250; Wake-up circuit - 140; Vehicle low-voltage battery - 10; Vehicle high-voltage battery - 20; Motor - 30; Vehicle start switch - 40; Vehicle communication system - 50; Lower bridge drive power control circuit - 211; First transformer - 212; Upper bridge drive power control circuit - 221; Second transformer - 222. Detailed Implementation

[0072] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0073] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0074] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0075] In the power system of electric vehicles, the motor controller plays a crucial role. Based on commands such as gear selection, throttle input, and braking, the motor controller converts the electrical energy stored in the battery into the electrical energy required to drive the motor, controlling the vehicle's starting, running, speed, and climbing ability. However, in practical use, a continuous low-voltage power supply is required to maintain the motor controller's normal operation. If a low-voltage power supply anomaly or a power outage occurs, the motor controller will lack power to continue operating, directly causing abnormal vehicle driving and resulting in the entire vehicle losing power.

[0076] Therefore, in response to the above situation, how to maintain the normal operation of the drive motor controller and thus ensure the normal operation of the vehicle when the low-voltage power supply to the motor controller is abnormal or there is a power failure is an urgent problem that needs to be solved.

[0077] Based on this, this application proposes an integrated motor controller. By setting up a DC-DC converter and a DC-DC redundant protection circuit, the controller can output redundant power to power the control board when the low-voltage power supply is abnormal or fails. This improves the reliability of the low-voltage power supply of the integrated motor controller and has a lower cost.

[0078] Example 1

[0079] Referring to Figure 1, which is a first structural schematic diagram of the integrated motor controller provided in Embodiment 1 of this application, the integrated motor controller 1 is electrically connected to the motor 30 to control the motor 30. As shown in Figure 1, the integrated motor controller 1 includes a control board 100, a drive board 200, a DC-DC converter 300, and a DC-DC redundancy protection circuit 400. The first end of the control board 100 is connected to the output end of the vehicle's low-voltage battery 10, and the second end of the control board 100 is connected to the first end of the drive board 200, thereby providing low-voltage power to the control board 100 through the vehicle's low-voltage battery 10 and driving the motor.

[0080] The first terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's low-voltage battery 10, the second terminal is connected to the input terminal of the vehicle's low-voltage battery 10, and the third terminal is connected to the output terminal of the vehicle's high-voltage battery 20. Thus, when the DC-DC converter 300 is operating, it can output a voltage VDCDC to charge the vehicle's low-voltage battery 10. The second terminal of the DC-DC converter 300 is also connected to the first terminal of the DC-DC redundancy protection circuit 400, which is connected to the first terminal of the control board 100. When the power supply line from the vehicle's low-voltage battery 10 to the control board 100 is abnormal, the DC-DC converter 300 can output a voltage VDCDC to provide redundant power to the control board 100. When the power supply line from the vehicle's low-voltage battery 10 to the control board 100 is normal, the vehicle's low-voltage battery 10 provides low-voltage power to the control board 100. When the power supply line from the vehicle's low-voltage battery 10 to the control board 100 is abnormal, the DC-DC converter 300 outputs voltage VDCDC to provide redundant power to the control board 100. Simultaneously, by connecting a DC-DC redundancy protection circuit 400 between the second terminal of the DC-DC converter 300 and the first terminal of the control board 100, the circuit can disconnect for protection in case of a short circuit or overcurrent in the line between the DC-DC converter 300 and the control board 100, thereby improving the reliability of the low-voltage power supply to the integrated motor controller 1. Furthermore, integrating the DC-DC converter 300 into the integrated motor controller 1 reduces the cost of using the DC-DC converter 300 output as a redundancy solution, eliminating the need to increase the cost of the vehicle's wiring harness. The redundant power supply loop integrated into the integrated motor controller 1 is shorter, requiring only a lower-cost power wiring harness.

[0081] In some embodiments of this application, the DC-DC redundancy protection circuit 400 can be integrated into the control board 100, thereby eliminating the need for additional circuit board or mounting structures and making the redundancy solution more cost-effective.

[0082] In this embodiment, the DC-DC redundancy protection circuit 400 has the function of controlling the input power of the control board 100. When the vehicle low-voltage battery 10 is powered normally, the DC-DC redundancy protection circuit 400 remains open, so that the voltage VDCDC output by the DC-DC converter 300 does not enter the control board 100 for power supply. When the vehicle low-voltage battery 10 is powered abnormally, the DC-DC redundancy protection circuit 400 is turned on, so that the voltage VDCDC output by the DC-DC converter 300 enters the control board 100 for redundant power supply.

[0083] In this embodiment, based on vehicle cost requirements, the DCDC redundancy protection circuit 400 may not have the function of controlling the input power supply of the control board 100. In this case, the voltage VKL30 output by the vehicle's low-voltage battery 10 and the voltage VDCDC output by the DCDC converter 300 provide redundant power to each other. When the voltage VKL30 is higher than the voltage VDCDC, the control board 100 is powered by the voltage VKL30, and the VDCDC output by the DCDC converter 300 does not power the control board 100. When the voltage VDCDC is higher than the voltage VKL30, the control board 100 is powered by the VDCDC output by the DCDC converter 300, and the VKL30 output by the vehicle's low-voltage battery 10 does not power the control board 100.

[0084] Example 2

[0085] Referring to Figure 2, which is a second structural schematic diagram of the integrated motor controller provided in Embodiment 2 of this application, the integrated motor controller 1 is electrically connected to the motor 30 to control the motor 30. As shown in Figure 2, the integrated motor controller 1 includes a control board 100, a drive board 200, a DC-DC converter 300, a DC-DC redundancy protection circuit 400, a lower bridge power module 500, and an upper bridge power module 600. The control board 100 is electrically connected to the drive board 200. The first end of the control board 100 is connected to the output end of the vehicle's low-voltage battery 10, thereby allowing the vehicle's low-voltage battery 10 to provide low-voltage power to the control board 100. The first end of the DC-DC converter 300 is connected to the output end of the vehicle's low-voltage battery 10, the second end of the DC-DC converter 300 is connected to the input end of the vehicle's low-voltage battery 10, and the third end of the DC-DC converter 300 is connected to the output end of the vehicle's high-voltage battery 20, thereby outputting a voltage VDCDC to charge the vehicle's low-voltage battery 10 when the DC-DC converter 300 is operating. The second terminal of the DC-DC converter 300 is also connected to the first terminal of the DC-DC redundancy protection circuit 400, which in turn is connected to the first terminal of the control board 100. When the power supply line from the vehicle's low-voltage battery 10 to the control board 100 is abnormal, the DC-DC converter 300 can output voltage VDCDC to provide redundant power to the control board 100. That is, when the power supply line from the vehicle's low-voltage battery 10 to the control board 100 is normal, the vehicle's low-voltage battery 10 provides low-voltage power to the control board 100; when the power supply line from the vehicle's low-voltage battery 10 to the control board 100 is abnormal, the DC-DC converter 300 outputs voltage VDCDC to provide redundant power to the control board 100. Meanwhile, by connecting a DCDC redundancy protection circuit 400 between the second end of the DCDC converter 300 and the first end of the control board 100, the DCDC redundancy protection circuit 400 can disconnect and protect the line between the DCDC converter 300 and the control board 100 from short circuit or overcurrent. This can improve the reliability of the low-voltage power supply of the integrated motor controller 1 and reduce the cost.

[0086] In this embodiment, the first end of the lower bridge power module 500 and the first end of the upper bridge power module 600 are both connected to the output end of the vehicle high-voltage battery 20; the second end of the lower bridge power module 500 and the second end of the upper bridge power module 600 are both connected to the drive board 200; and the third end of the lower bridge power module 500 and the third end of the upper bridge power module 600 are both connected to the motor 30. The output end of the vehicle high-voltage battery 20 is connected to the high-voltage input end of the lower bridge power module 500 and the upper bridge power module 600, and the drive board 200 is connected to the low-voltage input end of the lower bridge power module 500 and the upper bridge power module 600, thereby enabling the lower bridge power module 500 and the upper bridge power module 600 to output three-phase UVW voltage to drive the motor 30 to rotate.

[0087] In this embodiment, considering that the failure of the low-voltage battery 10 in the vehicle often occurs in the circuit from the battery output to the control board 100, a DC-DC converter 300 is installed inside the integrated motor controller 1 to output redundant voltage. This avoids the problem of the integrated motor controller 1 directly shutting down when a low-voltage circuit malfunction occurs, which could lead to excessive back electromotive force in the motor and damage to the electronic control hardware. Furthermore, this redundancy scheme is low-cost, improves the reliability of the electronic control product, and enhances its market competitiveness.

[0088] In this embodiment, the voltage VDCDC output from the DC-DC converter 300 in the integrated motor controller 1 and the output voltage VKL30 of the vehicle low-voltage battery 10 are redundantly used as the input power supply to the input control board 100 of the vehicle low-voltage battery 10. When there is a power supply abnormality between the vehicle low-voltage battery 10 and the control board 100, the output of the DC-DC converter 300 can be used as redundant power supply. Compared with the existing products that use high-voltage to low-voltage redundancy, this solution does not require the addition of high-cost components such as power chips, high-power transformers, high-power switching transistors, high-voltage connectors, etc. The existing DC-DC converter in the vehicle can be used, and only the DC-DC redundancy protection circuit 400 needs to be added, which is less expensive.

[0089] In this embodiment, the DC-DC redundancy protection circuit 400 can be an overcurrent protection device or circuit such as a low-current fuse.

[0090] It should be noted that the proposed embodiment of this application, which utilizes the output of a DC-DC converter to provide low-voltage redundant power supply for the integrated motor controller 1, is also applicable to vehicle solutions where the DC-DC converter is not integrated into the integrated motor controller 1. The output of an external DC-DC converter can be connected to the integrated motor controller 1 for low-voltage redundant power supply; only a DC-DC redundancy protection circuit needs to be added, and a reserve needs to be added to the low-voltage interface of the integrated motor controller 1. In other words, the embodiment of this application can cover vehicle solutions where the DC-DC converter is located inside or outside the motor controller, and the proposed low-voltage redundant power supply method is applicable to various vehicle models, demonstrating strong compatibility.

[0091] Example 3

[0092] In some embodiments of this application, referring to Figure 3, which is a third structural schematic diagram of the integrated motor controller provided in Embodiment 3 of this application, the integrated motor controller 1 includes a control board 100, a drive board 200, a DC-DC converter 300, a DC-DC redundancy protection circuit 400, a lower bridge power module 500, and an upper bridge power module 600. The first terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's low-voltage battery 10, the second terminal of the DC-DC converter 300 is connected to the input terminal of the vehicle's low-voltage battery 10, and the third terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's high-voltage battery 20. The second terminal of the DC-DC converter 300 is also connected to the first terminal of the DC-DC redundancy protection circuit 400, and the second terminal of the DC-DC redundancy protection circuit 400 is connected to the first terminal of the control board 100. The first terminal of the lower bridge power module 500 and the first terminal of the upper bridge power module 600 are both used to connect to the output terminal of the vehicle's high-voltage battery 20; the second terminals of the lower bridge power module 500 and the upper bridge power module 600 are both connected to the drive board 200, and the third terminals of the lower bridge power module 500 and the upper bridge power module 600 are both connected to the motor 30. The control board 100 is electrically connected to the drive board 200. The control board 100 includes an input control circuit 110, a voltage regulator circuit 120, and a downstream control circuit 130. The first terminal of the input control circuit 110 serves as the first terminal of the control board 100, used to connect to the output terminal of the vehicle's low-voltage battery 10 and the second terminal used to connect to the DC-DC redundancy protection circuit 400. The second terminal of the input control circuit 110 is connected to the first terminal of the voltage regulator circuit 120, the second terminal of the voltage regulator circuit 120 is connected to the first terminal of the downstream control circuit 130, and the second terminal of the downstream control circuit 130 is connected to the drive board 200.

[0093] In this embodiment, the first terminal of the input control circuit 110 serves as the first terminal of the control board 100. When the power supply line from the vehicle's low-voltage battery 10 to the control board 100 is normal, it receives the voltage VKL30 output by the vehicle's low-voltage battery 10; when the power supply line from the vehicle's low-voltage battery 10 to the control board 100 is abnormal, it receives the voltage VDCDC output by the DC-DC converter. Simultaneously, upon receiving a low-voltage input, the input control circuit 110 performs power supply control on the control board 100. For example, when the integrated motor controller 1 does not need to operate, the input control circuit 110 does not output voltage to power other circuits in the control board, which can reduce power consumption to some extent.

[0094] In this embodiment, the voltage regulator circuit 120 is connected to the input control circuit 110 and is used to regulate the output of the input control circuit 110 before transmitting it to the subsequent control circuit 130, thereby providing a stable power supply to the subsequent control circuit 130. The voltage regulator circuit 120 can stabilize the voltage VKL30_2 (i.e., the voltage output by the input control circuit), which has a large variation range, into a preset voltage value Vstable. Furthermore, the voltage regulator circuit 120 can detect voltage faults such as undervoltage or overvoltage of the input voltage VKL30_2 and, upon detecting a fault, stop the output to avoid abnormal input voltage and unpredictable faults. The voltage regulator circuit 120 can also detect whether the output is overcurrent. If overcurrent is detected, a protection mechanism is executed to limit the output current value, preventing the circuit from burning out components due to overcurrent.

[0095] In this embodiment, the downstream control circuit 130 is connected to the voltage regulator circuit 120. Due to the voltage regulation of the voltage regulator circuit 120, the voltage flowing into the downstream control circuit 130 is guaranteed to be a stable preset voltage value Vstable. Therefore, the downstream control circuit 130 does not require an additional voltage regulator circuit. For stable power supply, EMC (Electromagnetic Compatibility) design is simple, simplifying the transformer circuit design in the control board 100 and drive board 200, making the overall power supply to the control board 100 stable and reliable. Specifically, EMC refers to the ability of a device or system to operate within its electromagnetic environment without causing unacceptable electromagnetic interference to any equipment in that environment. After the power supply is stabilized by the voltage regulator circuit 120, electromagnetic interference generated by the circuit can be reduced, thereby simplifying the transformer circuit design in the control board 100 and drive board 200.

[0096] Example 4

[0097] In some embodiments of this application, referring to Figure 4, which is a fourth structural schematic diagram of the integrated motor controller provided in Embodiment 4 of this application, the integrated motor controller 1 includes a control board 100, a drive board 200, a DC-DC converter 300, a DC-DC redundancy protection circuit 400, a lower bridge power module 500, and an upper bridge power module 600. The first terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's low-voltage battery 10, the second terminal of the DC-DC converter 300 is connected to the input terminal of the vehicle's low-voltage battery 10, and the third terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's high-voltage battery 20. The second terminal of the DC-DC converter 300 is also connected to the first terminal of the DC-DC redundancy protection circuit 400, and the second terminal of the DC-DC redundancy protection circuit 400 is connected to the first terminal of the control board 100. The first terminal of the lower bridge power module 500 and the first terminal of the upper bridge power module 600 are both used to connect to the output terminal of the vehicle's high-voltage battery 20; the second terminals of the lower bridge power module 500 and the upper bridge power module 600 are both connected to the drive board 200, and the third terminals of the lower bridge power module 500 and the upper bridge power module 600 are both connected to the motor 30. The control board 100 is electrically connected to the drive board 200. The control board 100 includes an input control circuit 110, a voltage regulator circuit 120, and a downstream control circuit 130. The first terminal of the input control circuit 110 serves as the first terminal of the control board 100, used to connect to the output terminal of the vehicle's low-voltage battery 10 and the second terminal used to connect to the DC-DC redundancy protection circuit 400. The second terminal of the input control circuit 110 is connected to the first terminal of the voltage regulator circuit 120, the second terminal of the voltage regulator circuit 120 is connected to the first terminal of the downstream control circuit 130, and the second terminal of the downstream control circuit 130 is connected to the drive board 200. The control board 100 also includes a wake-up circuit 140. The first terminal of the wake-up circuit 140 is connected to the second terminal of the DC-DC redundancy protection circuit 400, and the first terminal of the wake-up circuit 140 is also used to connect to the output terminal of the vehicle's low-voltage battery 10. The second terminal of the wake-up circuit 140 is used to connect to the output terminal of the vehicle's start switch 40 to receive the hardware wake-up signal output by the vehicle's start switch 40. The third terminal of the wake-up circuit 140 is used to connect to the output terminal of the vehicle communication system 50 to receive the network wake-up signal output by the vehicle communication system 50. The fourth terminal of the wake-up circuit 140 is connected to the third terminal of the input control circuit 110.

[0098] In this embodiment, the first terminal of the wake-up circuit 140 is connected to the output terminal of the vehicle's low-voltage battery 10, allowing the vehicle's low-voltage battery 10 to provide low-voltage power to the wake-up circuit 140. The first terminal of the wake-up circuit 140 is connected to the second terminal of the DC-DC redundancy protection circuit 400, which in turn is connected to the second terminal of the DC-DC converter 300. Therefore, when the power supply line from the vehicle's low-voltage battery 10 to the wake-up circuit 140 is abnormal, the DC-DC converter 300 can output voltage VDCDC to power the wake-up circuit 140. That is, when the power supply line from the vehicle's low-voltage battery 10 to the wake-up circuit 140 is normal, the vehicle's low-voltage battery 10 provides low-voltage power to the wake-up circuit 140; when the power supply line from the vehicle's low-voltage battery 10 to the wake-up circuit 140 is abnormal, the DC-DC converter 300 outputs voltage VDCDC to power the wake-up circuit 140. Specifically, when the vehicle's low-voltage battery 10 is powered normally, the DCDC redundancy protection circuit 400 remains open, preventing the voltage VDCDC output by the DCDC converter 300 from entering the wake-up circuit 140 for power supply; when the vehicle's low-voltage battery 10 is powered abnormally, the DCDC redundancy protection circuit 400 is turned on, allowing the voltage VDCDC output by the DCDC converter 300 to enter the wake-up circuit 140 for power supply.

[0099] In this embodiment, the vehicle start switch 40 outputs a hardware wake-up signal KL15_WAK to the wake-up circuit 140, and the vehicle communication system 50 outputs a CAN network wake-up signal CAN_WAK to the wake-up circuit 140. After the hardware wake-up signal KL15_WAK or the network wake-up signal CAN_WAK is input to the wake-up circuit 140, the wake-up circuit 140 outputs a wake-up signal WAK to the input control circuit 110. When the input control circuit 110 does not receive the wake-up signal WAK sent by the wake-up circuit 140, it does not output voltage. Only when the input control circuit 110 receives the wake-up signal WAK sent by the wake-up circuit 140 does it output voltage VKL30_2. This prevents excessive static current when the integrated motor controller 1 is not working, thus achieving low power consumption of the vehicle's low-voltage battery 10. It also has two wake-up methods: hard wire and CAN network. For example, if the key is not turned on, or if it cannot be woken up via hard wire, the input control circuit 110 can be woken up via the CAN network to provide power.

[0100] In this embodiment, the input control circuit 110 determines whether to supply power based on the wake-up signal WAK sent by the wake-up circuit 140, which can reduce the total power consumption of the power supply input before the integrated motor controller 1 is woken up.

[0101] Example 5

[0102] In some embodiments of this application, referring to Figure 5, which is a fifth structural schematic diagram of the integrated motor controller provided in Embodiment 5 of this application, the integrated motor controller 1 includes a control board 100, a drive board 200, a DC-DC converter 300, a DC-DC redundancy protection circuit 400, a lower bridge power module 500, and an upper bridge power module 600. The first terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's low-voltage battery 10, the second terminal of the DC-DC converter 300 is connected to the input terminal of the vehicle's low-voltage battery 10, and the third terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's high-voltage battery 20. The second terminal of the DC-DC converter 300 is also connected to the first terminal of the DC-DC redundancy protection circuit 400, and the second terminal of the DC-DC redundancy protection circuit 400 is connected to the first terminal of the control board 100. The first terminal of the lower bridge power module 500 and the first terminal of the upper bridge power module 600 are both used to connect to the output terminal of the vehicle's high-voltage battery 20; the second terminals of the lower bridge power module 500 and the upper bridge power module 600 are both connected to the drive board 200, and the third terminals of the lower bridge power module 500 and the upper bridge power module 600 are both connected to the motor 30. The control board 100 is electrically connected to the drive board 200. The control board 100 includes an input control circuit 110, a voltage regulator circuit 120, and a downstream control circuit 130. The first terminal of the input control circuit 110 serves as the first terminal of the control board 100, used to connect to the output terminal of the vehicle's low-voltage battery 10 and the second terminal used to connect to the DC-DC redundancy protection circuit 400. The second terminal of the input control circuit 110 is connected to the first terminal of the voltage regulator circuit 120, the second terminal of the voltage regulator circuit 120 is connected to the first terminal of the downstream control circuit 130, and the second terminal of the downstream control circuit 130 is connected to the drive board 200. The downstream control circuit 130 includes a power supply protection circuit 131, a power supply control circuit 132, and a main control circuit 133. The first terminal of the power supply protection circuit 131 is connected to the second terminal of the voltage regulator circuit 120, and the second terminal of the power supply protection circuit 131 is connected to the first terminal of the power supply control circuit 132. The power supply protection circuit 131 is also connected to the driver board 200. The second terminal of the power supply control circuit 132 is connected to the first terminal of the main control circuit 133, and the power supply control circuit 132 is also connected to the driver board 200. The main control circuit 133 is also connected to the driver board 200.

[0103] In this embodiment, the voltage Vstable output by the voltage regulator circuit 120 is input to the power supply protection circuit 131, and then the power supply protection circuit 131 outputs voltage Vstable_1 to the power control circuit 132. The power supply protection circuit 131 can determine voltage faults such as undervoltage or overvoltage of the input voltage Vstable, and when a voltage fault is detected, the power supply protection circuit 131 does not output voltage Vstable_1. At the same time, the power supply protection circuit 131 can determine whether the output is overcurrent, and limit the output current value according to the degree of overcurrent. That is, the power supply protection circuit 131 can disconnect the output when the input voltage is abnormal; can limit the output current value when the output current is overcurrent; and can disconnect the output when there is a short circuit to protect the circuit components.

[0104] In this embodiment, the power control circuit 132 can be powered by an SBC chip, which can output multiple VSBC power supplies (e.g., +5V) to power the MCU chip, sampling chip, communication chip, sensors, etc. of the main control circuit 133, and also power the driver board 200. Furthermore, the SBC chip has a power monitoring function; when the output power is abnormal, it can report a fault to the main control circuit 133 via the SS1 pin and the SPI communication pin, thereby providing hardware and software protection for the circuit.

[0105] In this embodiment of the application, after the main control circuit 133 receives the power supply voltage output by the power control circuit 132, it can perform drive control on the drive board 200.

[0106] In some embodiments of this application, referring to FIG5, the subsequent control circuit 130 further includes a resolver circuit 134, the first terminal of the resolver circuit 134 being connected to the third terminal of the power supply protection circuit 131, and the second terminal of the resolver circuit 134 being connected to the third terminal of the power control circuit 132.

[0107] In this embodiment, the output of the power supply protection circuit 131 supplies power to the resolver circuit 134 through the power loop. At the same time, the power control circuit 132 can also supply power to the resolver circuit 134, thereby ensuring the normal operation of the resolver circuit 134.

[0108] Example 6

[0109] In some embodiments of this application, referring to Figure 6, which is a sixth structural schematic diagram of the integrated motor controller provided in Embodiment Six of this application, the integrated motor controller 1 includes a control board 100, a drive board 200, a DC-DC converter 300, a DC-DC redundancy protection circuit 400, a lower bridge power module 500, and an upper bridge power module 600. The first terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's low-voltage battery 10, the second terminal of the DC-DC converter 300 is connected to the input terminal of the vehicle's low-voltage battery 10, and the third terminal of the DC-DC converter 300 is connected to the output terminal of the vehicle's high-voltage battery 20. The second terminal of the DC-DC converter 300 is also connected to the first terminal of the DC-DC redundancy protection circuit 400, and the second terminal of the DC-DC redundancy protection circuit 400 is connected to the first terminal of the control board 100. The first terminal of the lower bridge power module 500 and the first terminal of the upper bridge power module 600 are both used to connect to the output terminal of the vehicle's high-voltage battery 20; the second terminals of the lower bridge power module 500 and the upper bridge power module 600 are both connected to the drive board 200, and the third terminals of the lower bridge power module 500 and the upper bridge power module 600 are both connected to the motor 30. The control board 100 is electrically connected to the drive board 200. The control board 100 includes an input control circuit 110, a voltage regulator circuit 120, and a downstream control circuit 130. The first terminal of the input control circuit 110 serves as the first terminal of the control board 100, used to connect to the output terminal of the vehicle's low-voltage battery 10 and the second terminal used to connect to the DC-DC redundancy protection circuit 400. The second terminal of the input control circuit 110 is connected to the first terminal of the voltage regulator circuit 120, the second terminal of the voltage regulator circuit 120 is connected to the first terminal of the downstream control circuit 130, and the second terminal of the downstream control circuit 130 is connected to the drive board 200. The downstream control circuit 130 includes a power supply protection circuit 131, a power supply control circuit 132, and a main control circuit 133. The first terminal of the power supply protection circuit 131 is connected to the second terminal of the voltage regulator circuit 120, and the second terminal of the power supply protection circuit 131 is connected to the first terminal of the power supply control circuit 132. The power supply protection circuit 131 is also connected to the driver board 200. The second terminal of the power supply control circuit 132 is connected to the first terminal of the main control circuit 133, and the power supply control circuit 132 is also connected to the driver board 200. The main control circuit 133 is also connected to the driver board 200. The driver board 200 includes a lower bridge drive power module 210, an upper bridge drive power module 220, a lower bridge drive circuit 230, and an upper bridge drive circuit 240. The first terminal of the lower bridge drive power module 210 is connected to the fourth terminal of the power supply protection circuit 131, the second terminal of the lower bridge drive power module 210 is connected to the second terminal of the main control circuit 133, and the third terminal of the lower bridge drive power module 210 is connected to the first terminal of the lower bridge drive circuit 230.The first terminal of the upper bridge drive power module 220 is connected to the fourth terminal of the power supply protection circuit 131, the second terminal of the upper bridge drive power module 220 is connected to the third terminal of the main control circuit 133, and the third terminal of the upper bridge drive power module 220 is connected to the first terminal of the upper bridge drive circuit 240. The second terminal of the lower bridge drive circuit 230 is connected to the fourth terminal of the main control circuit 133, and the third terminal of the lower bridge drive circuit 230 is connected to the second terminal of the lower bridge power module 500, for transmitting a first drive control signal to the lower bridge power module 500. The second terminal of the upper bridge drive circuit 240 is connected to the fifth terminal of the main control circuit 133, and the third terminal of the upper bridge drive circuit 240 is connected to the second terminal of the upper bridge power module 600, for transmitting a second drive control signal to the upper bridge power module 600.

[0110] In this embodiment, the voltage Vstable_1 output by the power supply protection circuit 131 enters the lower bridge drive power module 210, meaning that voltage Vstable_1 supplies power to the lower bridge drive power module 210. Simultaneously, the main control circuit 133 inputs a control signal CTL_L to the lower bridge drive power module 210. At this time, the lower bridge drive power module 210 outputs the lower bridge three-phase turn-on voltage Von_L and turn-off voltage Voff_L. If the main control circuit 133 does not output the control signal CTL_L to the lower bridge drive power module 210, the lower bridge drive power module 210 cannot output voltage. The lower bridge drive power module 210 can determine voltage faults such as undervoltage or overvoltage of the input voltage Vstable_1, and stops output when a voltage fault is detected to avoid abnormal input voltage and unpredictable faults. The lower bridge drive power module 210 can also determine whether the output is overcurrent; if overcurrent is detected, a protection mechanism is executed to limit the output current value, thereby preventing the circuit from burning out components due to overcurrent. The three-phase turn-on voltage Von_L and turn-off voltage Voff_L output by the lower bridge drive power module 210 are input to the secondary side of the lower bridge drive circuit 230 for power supply.

[0111] In this embodiment, similarly, the voltage Vstable_1 output by the power supply protection circuit 131 enters the upper bridge drive power module 220, that is, the voltage Vstable_1 supplies power to the upper bridge drive power module 220. Simultaneously, the main control circuit 133 inputs a control signal CTL_H to the upper bridge drive power module 220. At this time, the upper bridge drive power module 220 outputs the upper bridge three-phase turn-on voltage Von_H and turn-off voltage Voff_H. If the main control circuit 133 does not output the control signal CTL_H to the upper bridge drive power module 220, the upper bridge drive power module 220 cannot output voltage. The upper bridge drive power module 220 can determine voltage faults such as undervoltage or overvoltage of the input voltage Vstable_1, and avoids abnormal input voltage and unpredictable faults by stopping the output when a voltage fault is detected. The upper bridge drive power module 220 can also determine whether the output is overcurrent; if overcurrent is detected, a protection mechanism is executed to limit the output current value, thereby preventing the circuit from burning out components due to overcurrent. The three-phase turn-on voltage Von_H and turn-off voltage Voff_H output by the upper bridge drive power module 220 are input to the secondary side of the upper bridge drive circuit 240 for power supply.

[0112] In this embodiment, after the power supply protection circuit 131 supplies power to the driver board 200, the lower bridge drive power module 210 and the upper bridge drive power module 220 control whether to output drive power to the lower bridge drive circuit 230 and the upper bridge drive circuit 240 through the main control circuit 133. This scheme can realize that after the MCU chip of the main control circuit 133 and the SBC chip of the power control circuit 132 have completed initialization, the lower bridge drive power module 210 and the upper bridge drive power module 220 receive the corresponding control signals and then output drive power, avoiding unnecessary power consumption and reducing the risk of unexpected operation of the drive circuit.

[0113] In some embodiments of this application, referring to FIG6, the fourth terminal of the lower bridge power module 500 is connected to the fourth terminal of the lower bridge drive circuit 230, and is used to send a first short-circuit protection signal to the lower bridge drive circuit 230 when a short circuit occurs. The fourth terminal of the upper bridge power module 600 is connected to the fourth terminal of the upper bridge drive circuit 240, and is used to send a second short-circuit protection signal to the upper bridge drive circuit 240 when a short circuit occurs.

[0114] In this embodiment, when a short circuit occurs in the lower bridge power module 500, a first short-circuit protection signal DESAT_L can be sent to the lower bridge drive circuit 230. This causes the lower bridge drive circuit 230 to stop outputting voltage signals to the lower bridge power module 500, turning it off and preventing it from burning out. Similarly, when a short circuit occurs in the upper bridge power module 600, a second short-circuit protection signal DESAT_H can be sent to the upper bridge drive circuit 240. This causes the upper bridge drive circuit 240 to stop outputting voltage signals to the upper bridge power module 600, turning it off and preventing it from burning out.

[0115] In some embodiments of this application, referring to FIG6, the downstream control circuit 130 further includes a low-dropout linear regulator circuit 135. The first terminal of the low-dropout linear regulator circuit 135 is connected to the fourth terminal of the power supply protection circuit 131, and the second terminal of the low-dropout linear regulator circuit 135 is connected to the fifth terminal of the lower bridge drive circuit 230. Correspondingly, the fifth terminal of the upper bridge drive circuit 240 is connected to the third terminal of the power control circuit 132.

[0116] In this embodiment, the primary power supply of the lower bridge drive circuit 230 is provided by a low-dropout linear regulator circuit 135 that converts the voltage Vstable_1 to VLDO, with a VLDO value of +5V. The lower bridge three-phase turn-on voltage Von_L and turn-off voltage Voff_L output by the lower bridge drive power module 210 are input to the secondary power supply of the lower bridge drive circuit 230. The primary power supply of the upper bridge drive circuit 240 is provided by the VSBC output by the power control circuit 132, and the upper bridge three-phase turn-on voltage Von_H and turn-off voltage Voff_H output by the upper bridge drive power module 220 are input to the secondary power supply of the upper bridge drive circuit 240. The lower bridge drive circuit 230 and the upper bridge drive circuit 240 are powered by different power supplies, which can reduce the risk of common-cause failure of the lower bridge drive circuit 230 and the upper bridge drive circuit 240.

[0117] Example 7

[0118] Referring to Figure 7, which is a seventh structural schematic diagram of the integrated motor controller provided in Embodiment 7 of this application, as shown in Figure 7, the first terminal of the low-dropout linear regulator circuit 135 is connected to the fourth terminal of the power supply protection circuit 131, and the second terminal of the low-dropout linear regulator circuit 135 is connected to the fifth terminal of the upper bridge drive circuit 240; correspondingly, the fifth terminal of the lower bridge drive circuit 230 is connected to the third terminal of the power control circuit 132.

[0119] In this embodiment, the primary power supply of the upper bridge drive circuit 240 is provided by a low-dropout linear regulator circuit 135 that converts the voltage Vstable_1 to VLDO, with a VLDO value of +5V. The upper bridge three-phase turn-on voltage Von_H and turn-off voltage Voff_H output from the upper bridge drive power module 220 are input to the secondary power supply of the upper bridge drive circuit 240. The primary power supply of the lower bridge drive circuit 230 is provided by the VSBC output from the power control circuit 132, and the lower bridge three-phase turn-on voltage Von_L and turn-off voltage Voff_L output from the lower bridge drive power module 210 are input to the secondary power supply of the lower bridge drive circuit 230. The lower bridge drive circuit 230 and the upper bridge drive circuit 240 are powered by different power supplies, which can reduce the risk of common-cause failure of the lower bridge drive circuit 230 and the upper bridge drive circuit 240.

[0120] Example 8

[0121] Referring to Figure 8, which is an eighth structural schematic diagram of the integrated motor controller provided in Embodiment 8 of this application, as shown in Figure 8, the first terminal of the low-dropout linear regulator circuit 135 is connected to the fourth terminal of the power supply protection circuit 131, and the second terminal of the low-dropout linear regulator circuit 135 is connected to the fifth terminal of the upper bridge drive circuit 240 and the fifth terminal of the lower bridge drive circuit 230; correspondingly, the fifth terminal of the lower bridge drive circuit 230 and the fifth terminal of the upper bridge drive circuit 240 are both connected to the third terminal of the power control circuit 132.

[0122] In this embodiment, the primary power supply of the upper bridge drive circuit 240 is provided by the low-dropout linear regulator circuit 135, which converts the voltage Vstable_1 to VLDO before supplying power. The primary power supply of the upper bridge drive circuit 240 is also supplied by the VSBC output from the power control circuit 132. Similarly, the primary power supply of the lower bridge drive circuit 230 is also provided by the low-dropout linear regulator circuit 135, which converts the voltage Vstable_1 to VLDO before supplying power. The primary power supply of the lower bridge drive circuit 230 is also supplied by the VSBC output from the power control circuit 132. The lower bridge three-phase turn-on voltage Von_H and turn-off voltage Voff_H output from the upper bridge drive power module 220 are input to the secondary power supply of the upper bridge drive circuit 240. The lower bridge three-phase turn-on voltage Von_L and turn-off voltage Voff_L output from the lower bridge drive power module 210 are input to the secondary power supply of the lower bridge drive circuit 230. Both the lower bridge drive circuit 230 and the upper bridge drive circuit 240 use two different power supplies (such as VLDO and VSBC) for primary-side power supply. If one power supply fails, the other power supply can provide power, which can effectively ensure the primary-side power supply of the upper bridge drive circuit 240 and the lower bridge drive circuit 230.

[0123] Example 9

[0124] Referring to Figure 9, which is a ninth structural schematic diagram of the integrated motor controller provided in Embodiment 9 of this application, the lower bridge drive power module 210 includes a lower bridge drive power control circuit 211 and a first transformer 212. The first terminal of the lower bridge drive power control circuit 211 is connected to the fourth terminal of the power supply protection circuit 131, the second terminal of the lower bridge drive power control circuit 211 is connected to the first terminal of the first transformer 212, the second terminal of the first transformer 212 is connected to the fourth terminal of the power supply protection circuit 131, and the third terminal of the first transformer 212 is connected to the first terminal of the lower bridge drive circuit 230. Correspondingly, the fifth terminal of the upper bridge drive circuit 240 is connected to the fourth terminal of the power control circuit 132.

[0125] In this embodiment, the voltage Vstable_1 output by the power supply protection circuit 131 is input to the lower bridge drive power control circuit 211 and the first transformer 212 for power supply. The lower bridge drive power control circuit 211 outputs a control signal VL, which causes the first transformer 212 to output the lower bridge three-phase turn-on voltage Von L and turn-off voltage Voff L, and simultaneously outputs the primary-side power supply VLDO0-1 of the lower bridge drive circuit 230. That is, the primary-side power supply of the lower bridge drive circuit 230 is provided by VLDO0-1 generated by the lower bridge drive power control circuit 211 and the first transformer 212, instead of being powered by the low-dropout linear regulator circuit 135 converting the voltage Vstable_1 to VLDO. At this time, the primary-side power supply of the upper bridge drive circuit 240 is provided by VSBC output by the power control circuit 132. In this embodiment, the lower bridge drive circuit 230 and the upper bridge drive circuit 240 are also powered by different power supplies for their primary sides, which can reduce the risk of common-cause failure of the lower bridge drive circuit 230 and the upper bridge drive circuit 240.

[0126] Example 10

[0127] Referring to Figure 10, which is a tenth structural schematic diagram of the integrated motor controller provided in Embodiment 10 of this application, the upper bridge drive power module 220 includes an upper bridge drive power control circuit 221 and a second transformer 222. The first terminal of the upper bridge drive power control circuit 221 is connected to the fourth terminal of the power supply protection circuit 131, the second terminal of the upper bridge drive power control circuit 221 is connected to the first terminal of the second transformer 222, the second terminal of the second transformer 222 is connected to the fourth terminal of the power supply protection circuit 131, and the third terminal of the second transformer 222 is connected to the first terminal of the upper bridge drive circuit 240. Correspondingly, the fifth terminal of the lower bridge drive circuit 230 is connected to the fourth terminal of the power control circuit 132.

[0128] In this embodiment, the voltage Vstable_1 output by the power supply protection circuit 131 is input to the upper bridge drive power control circuit 221 and the second transformer 222 for power supply. The upper bridge drive power control circuit 221 outputs a control signal VH, which causes the second transformer 222 to output the upper bridge three-phase turn-on voltage Von H and turn-off voltage Voff H, and simultaneously outputs the primary-side power supply VLDO0-2 of the upper bridge drive circuit 240. That is, the primary-side power supply of the upper bridge drive circuit 240 is provided by VLDO0-2 generated by the upper bridge drive power control circuit 221 and the second transformer 222, instead of being powered by the low-dropout linear regulator circuit 135 converting the voltage Vstable_1 to VLDO. At this time, the primary-side power supply of the lower bridge drive circuit 230 is provided by VSBC output by the power control circuit 132. In this embodiment, the lower bridge drive circuit 230 and the upper bridge drive circuit 240 also use different power supplies for their primary-side power supply, which can reduce the risk of common-cause failure of the lower bridge drive circuit 230 and the upper bridge drive circuit 240.

[0129] Referring to Figures 6-10, after the primary and secondary sides of the lower bridge drive circuit 230 and the upper bridge drive circuit 240 are normally powered, the main control circuit 133 sends a first drive control signal PWM_L to the lower bridge drive circuit 230 and a second drive control signal PWM_H to the upper bridge drive circuit 240. This causes the lower bridge drive circuit 230 to output a lower bridge drive voltage Vpwm_L that can drive the lower bridge power module 500, and the upper bridge drive circuit 240 to output an upper bridge drive voltage Vpwm_H that can drive the upper bridge power module 600. After receiving the lower bridge drive voltage Vpwm_L and the upper bridge drive voltage Vpwm_H, and after the high-voltage power supply HV from the vehicle's high-voltage battery 20 enters the lower bridge power module 500 and the upper bridge power module 600, they can output a three-phase UVW voltage to drive the motor 30 to rotate.

[0130] In this embodiment, by employing two different power supply schemes to power the primary sides of the lower bridge drive circuit 230 and the upper bridge drive circuit 240, the risk of common-cause failure of the upper and lower bridge drive circuits can be reduced. That is, if one power supply scheme fails, the lower bridge drive circuit 230 can be controlled to drive the lower bridge power module 500 to perform a protection action through hardware or software protection, or the upper bridge drive circuit 240 can be controlled to drive the upper bridge power module 600 to perform a protection action through hardware or software protection.

[0131] In this embodiment, the voltage regulator circuit 120, power supply protection circuit 131, power control circuit 132, lower bridge drive power module 210, upper bridge drive power module 220, lower bridge drive circuit 230, and upper bridge drive circuit 240 all possess self-testing capabilities for voltage and current anomalies. This enables self-protection when voltage or current is abnormal, improving the timeliness of protection and preventing a single module failure from causing a complete circuit failure. Furthermore, for recoverable faults, the self-testing of each circuit allows for timely protection, and the circuit can resume normal operation after recovery.

[0132] In some embodiments of this application, referring to Figures 6-10, the drive board 200 includes an isolation sampling module 250. The first end of the isolation sampling module 250 is used to connect to the output end of the vehicle high-voltage battery 20, and the second end of the isolation sampling module 250 is connected to the sixth end of the main control circuit 133.

[0133] In this embodiment, the voltage output from the vehicle high-voltage battery 20 after passing through the isolation sampling module 250 enters the main control circuit 133, enabling the main control circuit 133 to execute the software protection mechanism based on these voltage signals.

[0134] In some embodiments of this application, referring to Figures 6-10, the integrated motor controller 1 further includes a current sampling device 700. The first end of the current sampling device 700 is connected to the third end of the lower bridge power module 500 and the third end of the upper bridge power module 600, and the second end of the current sampling device 700 is connected to the seventh end of the main control circuit 133.

[0135] In this embodiment, the three-phase current ISEN output by the lower bridge power module 500 and the upper bridge power module 600 can be collected by the current sampling device 700. These current signals enter the main control circuit 133, so that the main control circuit 133 can execute the software protection mechanism according to these current signals.

[0136] In this embodiment, the current sampling device 700 can be a current sensor or the like. The current sampling device 700 is installed between the lower bridge power module 500, the upper bridge power module 600 and the motor 30. The current sampling device 700 can measure the three-phase current ISEN output by the lower bridge power module 500 and the upper bridge power module 600. The three-phase current ISEN is fed back to the input terminal of the main control circuit 133.

[0137] In this embodiment, the input voltage VKL30_1 of the input control circuit 110, the output voltage Vstable of the voltage regulator circuit 120, the output voltage Vstable_1 of the power supply protection circuit 131, the output voltage VLDO of the low dropout linear regulator circuit 135, the output voltage VHV of the vehicle high-voltage battery 20 via the isolation sampling module 250, and the three-phase current ISEN output by the current sampling device 700 all enter the main control circuit 133. The MCU chip of the main control circuit 133 receives these voltage and current monitoring signals and can execute a software protection mechanism. That is, the main control circuit 133 executes software protection based on the monitored voltage and current signals and the current vehicle operating conditions, which can improve the reliability of power supply protection.

[0138] This application also provides a drive system, including a motor, a reducer, and an integrated motor controller 1 in some embodiments of this application.

[0139] Since the drive system provided in this application includes the integrated motor controller 1 of some embodiments of this application, the drive system can output redundant power to power the control board through the DC-DC converter when the low voltage power supply is abnormal or power is lost, which can improve the reliability of the low voltage power supply of the integrated motor controller 1 and reduce the cost.

[0140] In addition to the integrated motor controller 1 provided in some embodiments of this application, the drive system also includes a drive motor, a transmission (reducer), etc. The drive motor is the core power source of the vehicle, equivalent to the engine in a gasoline car, converting electrical energy from the power battery into kinetic energy to drive the electric vehicle through the reducer and half-shafts. The integrated motor controller, based on input signals from the brake and accelerator pedals or receiving torque commands from the vehicle controller, issues corresponding control commands to control the speed and direction of rotation of the drive motor, thereby driving the electric vehicle. The transmission (reducer) is a device that converts the high-speed rotation of the motor into low-speed, high-torque kinetic energy through gear transmission. It differs from the gearbox in a traditional gasoline car; the reducer only has a fixed reduction ratio and no speed adjustment function, and changes in speed and direction are achieved through the motor.

[0141] This application also provides a vehicle, including the drive system provided in this application embodiment.

[0142] In this embodiment of the application, since the drive system includes the integrated motor controller 1 of some embodiments of the application, the vehicle can output redundant power to power the control board through the DC-DC converter when the low voltage power supply is abnormal or the power is lost. This can improve the reliability of the low voltage power supply of the integrated motor controller 1 and reduce the cost.

[0143] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0144] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0145] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0146] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0147] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0148] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0149] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0150] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0151] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. An integrated motor controller for electrically connecting to a motor to control the motor, characterized in that, The integrated motor controller includes a control board, a drive board, a DC-DC converter, and a DC-DC redundancy protection circuit. The first end of the control board is used to connect to the output end of the vehicle's low-voltage battery, and the second end of the control board is connected to the first end of the drive board; The first terminal of the DC-DC converter is used to connect to the output terminal of the vehicle's low-voltage battery, the second terminal of the DC-DC converter is used to connect to the input terminal of the vehicle's low-voltage battery, the second terminal of the DC-DC converter is also connected to the first terminal of the DC-DC redundancy protection circuit, the second terminal of the DC-DC redundancy protection circuit is connected to the first terminal of the control board, and the third terminal of the DC-DC converter is used to connect to the output terminal of the vehicle's high-voltage battery.

2. The integrated motor controller according to claim 1, characterized in that, The control board includes an input control circuit, a voltage regulator circuit, and a subsequent control circuit. The first end of the input control circuit serves as the first end of the control board, used to connect the output end of the vehicle's low-voltage battery and the second end used to connect the DC-DC redundancy protection circuit. The second terminal of the input control circuit is connected to the first terminal of the voltage regulator circuit, the second terminal of the voltage regulator circuit is connected to the first terminal of the subsequent control circuit, and the second terminal of the subsequent control circuit is connected to the driver board.

3. The integrated motor controller according to claim 2, characterized in that, The control board also includes a wake-up circuit, the first end of which is connected to the second end of the DC-DC redundancy protection circuit, and the first end of the wake-up circuit is also used to connect to the output end of the vehicle's low-voltage battery. The second terminal of the wake-up circuit is used to connect to the output terminal of the vehicle start switch and to receive the hardware wake-up signal output by the vehicle start switch; The third terminal of the wake-up circuit is used to connect to the output terminal of the vehicle communication system and to receive the network wake-up signal output by the vehicle communication system. The fourth terminal of the wake-up circuit is connected to the third terminal of the input control circuit.

4. The integrated motor controller according to claim 2, characterized in that, The subsequent control circuit includes a power supply protection circuit, a power supply control circuit, and a main control circuit; The first terminal of the power supply protection circuit is connected to the second terminal of the voltage regulator circuit, the second terminal of the power supply protection circuit is connected to the first terminal of the power control circuit, and the power supply protection circuit is also connected to the driver board. The second terminal of the power control circuit is connected to the first terminal of the main control circuit. The power control circuit is also connected to the driver board, and the main control circuit is also connected to the driver board.

5. The integrated motor controller according to claim 4, characterized in that, The subsequent control circuit also includes a resolver circuit, the first terminal of which is connected to the third terminal of the power supply protection circuit, and the second terminal of which is connected to the third terminal of the power control circuit.

6. The integrated motor controller according to claim 4 or 5, characterized in that, The driver board includes a lower bridge driver power module, an upper bridge driver power module, a lower bridge driver circuit, and an upper bridge driver circuit. The first terminal of the lower bridge drive power module is connected to the fourth terminal of the power supply protection circuit, the second terminal of the lower bridge drive power module is connected to the second terminal of the main control circuit, and the third terminal of the lower bridge drive power module is connected to the first terminal of the lower bridge drive circuit. The first terminal of the upper bridge drive power module is connected to the fourth terminal of the power supply protection circuit, the second terminal of the upper bridge drive power module is connected to the third terminal of the main control circuit, and the third terminal of the upper bridge drive power module is connected to the first terminal of the upper bridge drive circuit. The second terminal of the lower bridge drive circuit is connected to the fourth terminal of the main control circuit, and the second terminal of the upper bridge drive circuit is connected to the fifth terminal of the main control circuit.

7. The integrated motor controller according to claim 6, characterized in that, The integrated motor controller also includes a lower bridge power module and an upper bridge power module; The first end of the lower bridge power module and the first end of the upper bridge power module are both used to connect to the output end of the vehicle's high-voltage battery; the second end of the lower bridge power module is connected to the third end of the lower bridge drive circuit, and the second end of the upper bridge power module is connected to the third end of the upper bridge drive circuit; the third ends of the lower bridge power module and the third end of the upper bridge power module are both connected to the motor.

8. The integrated motor controller according to claim 7, characterized in that: The fourth terminal of the lower bridge power module is connected to the fourth terminal of the lower bridge drive circuit, and is used to send a first short circuit protection signal to the lower bridge drive circuit when a short circuit occurs. The fourth terminal of the upper bridge power module is connected to the fourth terminal of the upper bridge drive circuit, and is used to send a second short-circuit protection signal to the upper bridge drive circuit when a short circuit occurs.

9. The integrated motor controller according to claim 7, characterized in that, The integrated motor controller further includes a current sampling device. The first end of the current sampling device is connected to the third end of the lower bridge power module and the third end of the upper bridge power module, and the second end of the current sampling device is connected to the seventh end of the main control circuit.

10. The integrated motor controller according to claim 6, characterized in that, The subsequent control circuit also includes a low-dropout linear regulator circuit, the first terminal of which is connected to the fourth terminal of the power supply protection circuit. The second terminal of the low-dropout linear regulator circuit is connected to the fifth terminal of the lower bridge drive circuit; correspondingly, the fifth terminal of the upper bridge drive circuit is connected to the fourth terminal of the power control circuit. Alternatively, the second terminal of the low-dropout linear regulator circuit is connected to the fifth terminal of the upper bridge drive circuit; correspondingly, the fifth terminal of the lower bridge drive circuit is connected to the fourth terminal of the power control circuit. Alternatively, the second terminal of the low-dropout linear regulator circuit is connected to the fifth terminal of the upper bridge drive circuit and the fifth terminal of the lower bridge drive circuit, and the fourth terminal of the power control circuit is connected to the fifth terminal of the upper bridge drive circuit and the fifth terminal of the lower bridge drive circuit.

11. The integrated motor controller according to claim 6, characterized in that, The lower bridge drive power module includes a lower bridge drive power control circuit and a first transformer. The first terminal of the lower bridge drive power control circuit is connected to the fourth terminal of the power supply protection circuit. The second terminal of the lower bridge drive power control circuit is connected to the first terminal of the first transformer. The second terminal of the first transformer is connected to the fourth terminal of the power supply protection circuit. The third terminal of the first transformer is connected to the first terminal of the lower bridge drive circuit. Correspondingly, the fifth terminal of the upper bridge drive circuit is connected to the fourth terminal of the power control circuit. Alternatively, the upper bridge drive power module includes an upper bridge drive power control circuit and a second transformer. The first terminal of the upper bridge drive power control circuit is connected to the fourth terminal of the power supply protection circuit, the second terminal of the upper bridge drive power control circuit is connected to the first terminal of the second transformer, the second terminal of the second transformer is connected to the fourth terminal of the power supply protection circuit, and the third terminal of the second transformer is connected to the first terminal of the upper bridge drive circuit. Correspondingly, the fifth terminal of the lower bridge drive circuit is connected to the fourth terminal of the power control circuit.

12. The integrated motor controller according to claim 4, characterized in that, The drive board includes an isolation sampling module. The first end of the isolation sampling module is used to connect to the output end of the vehicle's high-voltage battery, and the second end of the isolation sampling module is connected to the sixth end of the main control circuit.

13. The integrated motor controller according to claim 1, characterized in that, The DC-DC redundancy protection circuit is integrated into the control board.

14. The integrated motor controller according to claim 1, characterized in that: When the vehicle's low-voltage battery is powered normally, the DCDC redundancy protection circuit is disconnected, so that the voltage output by the DCDC converter does not enter the control board for power supply. When the low-voltage battery of the vehicle is abnormally powered, the DC-DC redundancy protection circuit is activated, so that the voltage output by the DC-DC converter enters the control board for redundant power supply. Alternatively, when the voltage output by the vehicle's low-voltage battery is greater than or equal to the voltage output by the DC-DC redundancy protection circuit, the control board is powered by the voltage output by the vehicle's low-voltage battery. When the voltage output by the vehicle's low-voltage battery is less than the voltage output by the DC-DC redundancy protection circuit, the voltage output by the DC-DC redundancy protection circuit powers the control board.

15. A drive system, characterized in that, Includes a motor, a speed reducer, and an integrated motor controller as described in any one of claims 1-14.

16. A vehicle, characterized in that, Includes the drive system as described in claim 15.

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