Power supply topology system, motor driving controller and vehicle

Abstract

The invention provides a power supply topology system, a motor drive controller and a vehicle, and relates to the technical field of vehicles, the power supply topology system comprises a flyback power supply, the input end of the flyback power supply is connected with the output end of a battery module, and the output end of the flyback power supply is connected with the input end of a rotary transformer excitation circuit; the flyback power supply is used for converting first direct current output by the battery module into second direct current, and the second direct current is used for supplying power to the rotary transformer excitation circuit; the input end of the push-pull power supply is connected with the output end of the flyback power supply, the output end of the push-pull power supply is connected with the input end of the motor driving circuit, and the push-pull power supply is used for converting second direct current output by the flyback power supply into third direct current and fourth direct current; the third direct current and the fourth direct current are used for supplying power to the high-voltage side of the motor driving circuit. The problems that in the prior art, a power source topology scheme is high in cost and large in area are solved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a power supply topology system, a motor drive controller and a vehicle. Background Art

[0002] In new energy vehicles, the motor drive control system is the core part of the power system, which can convert the electrical energy of the high-voltage battery into the kinetic energy of the motor. At the same time, in order to ensure the stable operation of the motor drive control system, a power supply topology needs to be designed to provide stable power supply for the system.

[0003] Generally, the high-voltage side power supply topology of the motor drive control circuit can adopt a flyback topology structure, which has the advantages of fewer components, simple circuit, stable operation, and high reliability, but has the disadvantage of low output power. Generally, each bridge arm on the high-voltage side requires a flyback power supply chip to convert the battery voltage into the positive and negative voltages required by the motor drive control circuit through the flyback topology. This also leads to problems such as high cost and large area of ​​the power supply topology solution.

[0004] There is no effective solution to the above problems yet. Summary of the invention

[0005] The main purpose of the present invention is to provide a power supply topology system, a motor drive controller and a vehicle to solve the problems of high cost and large area of ​​power supply topology solutions in the prior art.

[0006] In order to achieve the above-mentioned object, according to one aspect of the present invention, a power supply topology system is provided. The power supply topology system comprises: a flyback power supply, the input end of the flyback power supply is connected to the output end of the battery module, the output end of the flyback power supply is connected to the input end of the resolver excitation circuit, the flyback power supply is used to convert the first direct current output by the battery module into a second direct current, and the second direct current is used to power the resolver excitation circuit; a push-pull power supply, the input end of the push-pull power supply is connected to the output end of the flyback power supply, the output end of the push-pull power supply is connected to the input end of the motor drive circuit, the push-pull power supply is used to convert the second direct current output by the flyback power supply into a third direct current and a fourth direct current, and the third direct current and the fourth direct current are used to power the high-voltage side of the motor drive circuit.

[0007] Furthermore, the battery module is a high-voltage power battery, and the power supply topology also includes: a high-voltage flyback isolated power supply, which is used to convert the high-voltage direct current output by the high-voltage power battery into DC / DC and then supply power to the resolver excitation circuit 30.

[0008] Furthermore, the battery module is a low-voltage battery, and the power supply topology also includes: a low-voltage flyback isolated power supply, which is used to convert the low-voltage direct current output by the low-voltage battery into DC / DC and then supply power to the resolver excitation circuit 30.

[0009] Furthermore, the power supply topology also includes: an SBC module, the input end of the SBC module is connected to the output end of the high-voltage flyback isolation power supply, the output end of the SBC module is connected to the input end of the motor drive circuit, the SBC module is used to convert the first direct current into a fifth direct current, and the fifth direct current is used to power the low-voltage side of the motor drive circuit.

[0010] Furthermore, the power supply topology also includes: an SBC module, and an input end of the SBC module is connected to an output end of the low-voltage battery.

[0011] Furthermore, the output end of the SBC module is connected to the input end of the resolver excitation circuit, and the fifth direct current is used to power the resolver excitation circuit.

[0012] Furthermore, the output end of the SBC module is connected to the input end of the vehicle control circuit, and the fifth direct current is used to power the vehicle control circuit.

[0013] According to another aspect of the present invention, a motor drive controller is provided. The motor drive controller includes a power supply topology system. The power supply topology system is the power supply topology system of the above embodiment.

[0014] Furthermore, the motor drive controller also includes: a motor drive circuit, a vehicle control circuit, and a power module, wherein the power module is used to convert the high-voltage direct current output by the high-voltage power battery into a first alternating current, the first alternating current is used to drive the motor, and the vehicle control circuit is used to control the motor drive circuit to drive the power module.

[0015] Furthermore, the motor drive controller also includes: a resolver excitation circuit, the resolver excitation circuit is connected to the motor signal, and the resolver excitation circuit is used to decode the resolver signal connected to the motor.

[0016] According to another aspect of the present invention, a vehicle is provided, including a battery module, a motor and a motor drive controller. The motor drive controller is the motor drive controller of the above embodiment, and the motor drive controller is used to convert high-voltage direct current output by the high-voltage power battery into alternating current to drive the motor.

[0017] By applying the technical solution of the present invention, the flyback power supply and the push-pull power supply are respectively responsible for different voltage conversion tasks. The flyback power supply efficiently converts the DC power of the battery module into a low-voltage DC power suitable for the rotary transformer excitation circuit. The push-pull power supply further converts the second DC power output by the flyback power supply into the high-voltage DC power required by the motor drive circuit. This multi-stage conversion can optimize the voltage conversion efficiency and reduce energy loss. A single flyback power supply is used to power the rotary transformer excitation circuit, and a push-pull power supply is used to power the high-voltage side of the motor drive circuit. Compared with the traditional solution that each circuit requires an independent power chip, this design can reduce the number of power chips, thereby reducing system costs and reducing the space occupied by the circuit board. While ensuring the function of stable power supply, it also takes into account the advantages of high power, small area and cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 It shows a schematic diagram of the structure of the power supply topology system according to the present invention;

[0020] Figure 2 A schematic diagram of the structure of a motor drive controller according to the present invention is shown;

[0021] Figure 3 A schematic diagram of the structure of a flyback power supply according to the present invention is shown;

[0022] Figure 4 A schematic structural diagram of a push-pull power supply according to the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Flyback power supply;

[0025] 20. Push-pull power supply;

[0026] 30. Resolver excitation circuit;

[0027] 40. Motor drive circuit;

[0028] 50. SBC module;

[0029] 60. Vehicle control circuit;

[0030] 70. Power module. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0035] Combination Figures 1 to 4 As shown, according to a specific embodiment of the present invention, a power supply topology system is provided.

[0036] Specifically, Figure 1As shown, the power supply topology system includes: a flyback power supply 10, the input end of the flyback power supply 10 is connected to the output end of the battery module, the output end of the flyback power supply 10 is connected to the input end of the resolver excitation circuit 30, the flyback power supply 10 is used to convert the first direct current output by the battery module into a second direct current, and the second direct current is used to power the resolver excitation circuit 30; a push-pull power supply 20, the input end of the push-pull power supply 20 is connected to the output end of the flyback power supply 10, the output end of the push-pull power supply 20 is connected to the input end of the motor drive circuit 40, the push-pull power supply 20 is used to convert the second direct current output by the flyback power supply 10 into a third direct current and a fourth direct current, and the third direct current and the fourth direct current are used to power the high-voltage side of the motor drive circuit 40.

[0037] In this embodiment, the flyback power supply 10 and the push-pull power supply 20 are respectively responsible for different voltage conversion tasks. The flyback power supply 10 efficiently converts the DC power of the battery module into a low-voltage DC power suitable for the rotary transformer excitation circuit 30. The push-pull power supply 20 further converts the second DC power output by the flyback power supply 10 into the high-voltage DC power required by the motor drive circuit 40. This multi-stage conversion can optimize the voltage conversion efficiency and reduce energy loss. A single flyback power supply 10 is used to power the rotary transformer excitation circuit 30, and the push-pull power supply 20 is used to power the high-voltage side of the motor drive circuit 40. Compared with the traditional solution that each circuit requires an independent power chip, this design can reduce the number of power chips, thereby reducing system costs and reducing the space occupied by the circuit board. While ensuring the function of stable power supply, it also takes into account the advantages of high power, small area and cost saving.

[0038] It should be noted that the motor drive circuit may include but is not limited to the following components to achieve efficient control and energy conversion of the motor:

[0039] Three-phase full-bridge inverter The three-phase full-bridge inverter is the core of the motor drive circuit. It consists of an upper bridge arm and a lower bridge arm. Usually, each bridge arm includes one or more power switch tubes (such as IGBT or MOSFET). By controlling the switching state of these switch tubes, the H-bridge inverter can realize the conversion of DC to AC to drive the motor to run.

[0040] Driver Control Circuit: This part of the circuit is responsible for generating control signals to drive the power switch tubes in the three-phase full-bridge inverter. It usually includes a microprocessor, signal conditioning circuits and driver circuits, and can execute complex control algorithms such as vector control or direct torque control to achieve precise control of the motor.

[0041] Sensor Circuits: including current sensors, voltage sensors and temperature sensors, etc., which are used to monitor the motor operating parameters and the working status of the inverter to ensure the safe and efficient operation of the motor drive system.

[0042] Protection Circuit: It is used to monitor and prevent faults such as overcurrent, overvoltage, undervoltage and overtemperature. Once an abnormality is detected, protective measures are taken immediately, such as cutting off the control signal of the power switch tube to prevent system damage.

[0043] Communication Interface: It is used to exchange data with the vehicle controller or other electronic systems to ensure that the motor drive system can adjust the motor's operating parameters in real time according to the vehicle's operating status.

[0044] Capacitors and Inductors: used for filtering, energy storage and current smoothing, etc., to ensure that the AC power output by the inverter has a good waveform and stability.

[0045] Pulse Width Modulation (PWM) circuit: used to generate PWM signals to control the power switch tube. By adjusting the duty cycle of the PWM signal, the speed and torque of the motor can be controlled.

[0046] Motor Position Sensing Circuit: Such as resolver excitation circuit, used to measure the angular displacement and angular velocity of the motor, and feed the motor position information back to the drive control circuit to achieve closed-loop control.

[0047] Drive signal isolation circuit (Signal Isolation Circuit): used to provide electrical isolation between the control circuit and the power circuit to prevent high voltage from interfering with or damaging the control circuit.

[0048] These components of the motor drive circuit work together to ensure that the motor can operate efficiently and stably according to the vehicle's operating needs, while protecting the system from potential electrical faults. The complexity and performance of the motor drive circuit often determines the overall power performance and energy efficiency of electric vehicles.

[0049] Furthermore, the battery module is a high-voltage power battery, and the power supply topology also includes: a high-voltage flyback isolated power supply, which is used to convert the direct current output by the high-voltage power battery into DC / DC and then supply power to the resolver excitation circuit 30.

[0050] The high-voltage flyback isolated power supply realizes electrical isolation between the high-voltage power battery and the resolver excitation circuit 30 through a transformer, preventing direct electrical connection between the high-voltage battery and the low-voltage circuit, avoiding damage to the resolver excitation circuit 30 caused by transients or faults on the high-voltage side, and reducing the interference of electrical noise. The high-voltage flyback isolated power supply can convert the DC voltage of the high-voltage power battery into the appropriate voltage required by the resolver excitation circuit 30, and this process usually involves a significant reduction in voltage. By adopting efficient DC / DC conversion technology, it is possible to ensure high efficiency of voltage conversion, reduce energy loss, and thus improve the energy efficiency of the entire power system.

[0051] Furthermore, the battery module is a low-voltage battery, and the power supply topology also includes: a low-voltage flyback isolated power supply, which is used to convert the direct current output by the low-voltage battery into DC / DC and then supply power to the resolver excitation circuit 30.

[0052] The low-voltage flyback isolated power supply can convert the voltage of the low-voltage battery into the precise voltage required by the resolver excitation circuit 30. This voltage conversion ensures that the resolver excitation circuit can operate at the optimal voltage, thereby achieving more accurate and stable motor position and speed measurement. Electrical isolation also helps to improve the system's anti-interference ability. In the vehicle environment, there are many sources of electromagnetic interference. Electrical isolation can effectively reduce the impact of these interferences on the resolver excitation circuit and ensure accurate transmission and processing of signals. The low-voltage flyback isolated power supply adopts efficient DC / DC conversion technology, which can reduce energy loss in the conversion process and improve the overall energy efficiency of the power supply system.

[0053] Furthermore, the power supply topology also includes: an SBC module 50, the input end of the SBC module 50 is connected to the output end of the high-voltage flyback isolation power supply or the output end of the low-voltage battery, the output end of the SBC module 50 is connected to the input end of the motor drive circuit 40, and the SBC module 50 is used to convert the first direct current into a fifth direct current, and the fifth direct current is used to power the low-voltage side of the motor drive circuit 40.

[0054] The SBC module 50 is directly connected to the low-voltage battery or to the output end of the high-voltage flyback isolation power supply to power the low-voltage side of the motor drive circuit 40. It also achieves electrical isolation through its internal isolation transformer to ensure that there is no direct electrical connection between the low-voltage circuit inside the system and the low-voltage battery, thereby improving the safety of the system and avoiding potential damage to the low-voltage circuit by the high voltage. The SBC module 50 can adjust the first DC voltage to the fifth DC voltage required by the low-voltage side of the motor drive circuit 40. This conversion function is necessary for the normal operation of the motor drive control system, ensuring that the low-voltage part of the motor drive circuit 40 (such as control logic, pre-drive circuit, etc.) can obtain a stable and appropriate power supply. Through the SBC module 50, the electric energy in the motor drive system can be managed more effectively. It can dynamically adjust the output voltage according to the needs of the system to avoid energy waste. At the same time, efficient voltage conversion reduces the loss of energy during the conversion process and improves the energy efficiency of the entire system.

[0055] Further, the output end of the SBC module 50 is connected to the input end of the resolver excitation circuit 30 , and the fifth direct current is used to power the resolver excitation circuit 30 .

[0056] The SBC module 50 is specifically used to provide power for the resolver excitation circuit 30, ensuring the stable operation of the resolver excitation circuit 30 and not being affected by power fluctuations of other circuits. This independent power supply is essential to ensure high-precision measurement of the resolver excitation circuit 30 because it can avoid measurement errors caused by voltage fluctuations. The SBC module 50 also achieves electrical isolation through an isolation transformer, which is particularly important in the resolver excitation circuit 30 because the resolver excitation circuit usually needs to interact with the high-voltage circuit of the motor. Electrical isolation can effectively prevent the high-voltage circuit from interfering with the decoding circuit, protect sensitive electronic components, and ensure the overall safety and stability of the system.

[0057] Furthermore, the output end of the SBC module 50 is connected to the input end of the vehicle control circuit 60, and the fifth DC power is used to power the vehicle control circuit 60. Using the SBC module as the power source of the vehicle control circuit simplifies the power management architecture, reduces the need for additional power converters, helps simplify the overall vehicle design, and reduces system complexity and cost.

[0058] like Figure 2As shown, according to another aspect of the present invention, a motor drive controller is provided, the motor drive controller includes a power supply topology system, and the power supply topology system is the power supply topology system of the above embodiment. The power supply topology system includes: a flyback power supply 10, the input end of the flyback power supply 10 is connected to the output end of the battery module, the output end of the flyback power supply 10 is connected to the input end of the resolver excitation circuit 30, the flyback power supply 10 is used to convert the first direct current output by the battery module into a second direct current, and the second direct current is used to power the resolver excitation circuit 30; a push-pull power supply 20, the input end of the push-pull power supply 20 is connected to the output end of the flyback power supply 10, the output end of the push-pull power supply 20 is connected to the input end of the motor drive circuit 40, the push-pull power supply 20 is used to convert the second direct current output by the flyback power supply 10 into a third direct current and a fourth direct current, and the third direct current and the fourth direct current are used to power the high-voltage side of the motor drive circuit 40.

[0059] The flyback power supply 10 and the push-pull power supply 20 are responsible for different voltage conversion tasks. The flyback power supply 10 efficiently converts the high-voltage direct current of the battery module into a low-voltage direct current suitable for the rotary transformer excitation circuit 30. The push-pull power supply 20 further converts the second direct current output by the flyback power supply 10 into the high-voltage direct current required by the motor drive circuit 40. This multi-stage conversion can optimize the voltage conversion efficiency and reduce energy loss. A single flyback power supply 10 is used to power the rotary transformer excitation circuit 30, and the push-pull power supply 20 is used to power the high-voltage side of the motor drive circuit 40. Compared with the traditional solution that each circuit requires an independent power chip, this design can reduce the number of power chips, thereby reducing system costs and reducing the space occupied by the circuit board. While ensuring the function of stable power supply, it also takes into account the advantages of high power, small area and cost saving.

[0060] Furthermore, the motor drive controller also includes: a motor drive circuit 40, a vehicle control circuit 60, and a power module 70, wherein the power module 70 is used to convert the high-voltage direct current output by the high-voltage power battery into a first alternating current, and the first alternating current is used to drive the motor, and the vehicle control circuit 60 is used to control the motor drive circuit 40 to drive the power module 70.

[0061] The power module 70 can efficiently convert the high-voltage direct current output by the high-voltage power battery into the first alternating current for driving the motor. This process usually involves inverter technology, namely DC / AC conversion, which can ensure that the motor obtains the best energy input, thereby improving the motor efficiency and the energy efficiency of the vehicle. The vehicle control circuit 60 is responsible for controlling the operation of the motor drive circuit 40 and the power module 70, and realizes precise control of the motor operation state by regulating parameters such as frequency, phase and voltage during the inversion process. High-precision control can improve the driving performance of the vehicle, such as smooth acceleration, efficient braking and precise steering. The motor drive controller can monitor the motor operation state, such as current, temperature and voltage, in real time, and take protective measures in time when abnormalities are detected to prevent the motor from overheating, overloading or damage. This protection mechanism improves the life and reliability of the motor and the entire electric drive system.

[0062] Furthermore, the motor drive controller also includes: a resolver excitation circuit 30, the resolver excitation circuit 30 is connected to the motor signal, and the resolver excitation circuit 30 is used to decode the resolver signal connected to the motor.

[0063] According to another aspect of the present invention, a vehicle is provided, including a battery module, a motor and a motor drive controller. The motor drive controller is the motor drive controller of the above embodiment, and the motor drive controller is used to convert high-voltage direct current output by the high-voltage power battery into alternating current to drive the motor.

[0064] In another embodiment of the present application, according to reference Figure 3 The flyback power supply chip outputs a PWM signal to control the switch tube Q 1， When the switch tube Q1 is turned on, the first DC current flows through the transformer T1, the switch tube Q1 and the sampling resistor R sense At this time, the current on the primary winding of transformer T1 gradually increases, and the corresponding magnetic induction intensity in the magnetic core of transformer T1 also increases, and transformer T1 begins to store energy. At this time, the induced voltage generated by the secondary winding is a reverse voltage, and diode D1 is in a reverse cut-off state. At this time, the energy storage capacitor C2 is fed to the load resistor R load Power supply. When the switch tube Q1 is turned off, the current flowing through the primary winding of the transformer T1 is zero, and the magnetic induction intensity in the corresponding transformer T1 core decreases, and the transformer T1 begins to release energy. At this time, the induced voltage generated by the secondary winding is a forward voltage, and the diode D1 is in a forward conduction state. At this time, the energy stored in the transformer T1 begins to be the energy storage capacitor C2 and the load resistor R load The flyback power chip controls the on and off of the switch tube Q1 by outputting a PWM signal, wherein the output second DC power is determined by the duty cycle and frequency of the PWM signal output by the flyback power chip. senseThe current signal on the output switch tube Q1 is controlled in real time, and the duty cycle of the PWM signal of the output switch tube Q1 is dynamically adjusted to ensure the constancy of the output second DC voltage.

[0065] according to Figure 4 , the dual-channel MOSFET driver controller controls the on and off of the dual-channel N-type MOSFET. The dual-channel N-type MOSFET contains two switch tubes Q2 and Q3. During operation, the dual-channel MOSFET driver controller controls Q2 and Q3 to conduct alternately. The center tap of the primary winding of transformer T2 is connected to the second DC output of the front-end flyback switching power supply. The upper push-pull is connected to the primary first winding N 1a When the switch tube Q2 is turned on, the second DC current flows through the primary first winding N of the transformer T2. 1a and switch tube Q2. At this time, the primary first winding N of transformer T2 1a As the current on the transformer increases, the magnetic induction intensity in the corresponding transformer T2 core also increases, and the transformer T2 begins to store energy. At this time, a corresponding positive lower and negative upper induced voltage is generated in the secondary winding N2, and the diode D2 is in the reverse cut-off state. At this time, the load is powered by capacitor C4. When Q2 is turned off, the current flowing through the primary first winding N 1a The current of the switch tube Q2 is zero, and the corresponding magnetic induction intensity in the core of the transformer T2 decreases, and the transformer T2 begins to release energy. At this time, the induced voltage corresponding to the secondary winding N2 is negative at the bottom and positive at the top, and the diode D1 is in the forward conduction state. At this time, the energy stored in the transformer T2 begins to supply power to the capacitor C4 and the load. When the voltage on the diode changes, the parallel capacitor C3 charges and discharges, making the output current curve change smoother. The lower end is push-pull connected to the primary second winding N 1b When the switch tube Q3 is turned on, the second DC current flows through the primary second winding N of the transformer T3. 1b and switch tube Q3. At this time, the primary second winding N of transformer T3 1b As the current on the transformer increases, the magnetic induction intensity in the corresponding transformer T3 core also increases, and the transformer T3 begins to store energy. At this time, a corresponding positive lower and negative upper induced voltage is generated in the secondary winding N3, and the diode D3 is in a reverse cut-off state. At this time, the load is powered by capacitor C6. When Q3 is turned off, the current flowing through the primary second winding N 1bThe current of the switch tube Q3 is zero, and the corresponding magnetic induction intensity in the magnetic core of the transformer T3 decreases, and the transformer T3 begins to release energy. At this time, the induced voltage corresponding to the secondary winding N3 is negative at the bottom and positive at the top, and the diode D2 is in a forward conduction state. At this time, the energy stored in the transformer T3 begins to supply power to the capacitor C6 and the load. When the voltage on the diode changes, the parallel capacitor C5 charges and discharges, making the output current curve change smoother. While meeting the power requirements, the dual-channel N-type MOSFET can be connected in parallel to several push-pull power supply circuits according to demand.

[0066] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0067] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0068] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power supply topology system, characterized in that: include: A flyback power supply (10), wherein an input end of the flyback power supply (10) is connected to an output end of a battery module, and an output end of the flyback power supply (10) is connected to an input end of a resolver excitation circuit (30), and the flyback power supply (10) is used to convert a first direct current output by the battery module into a second direct current, and the second direct current is used to power the resolver excitation circuit (30); A push-pull power supply (20), wherein an input end of the push-pull power supply (20) is connected to an output end of the flyback power supply (10), and an output end of the push-pull power supply (20) is connected to an input end of a motor drive circuit (40), and the push-pull power supply (20) is used to convert a second direct current output by the flyback power supply (10) into a third direct current and a fourth direct current, and the third direct current and the fourth direct current are used to supply power to a high-voltage side of the motor drive circuit (40).

2. The power supply topology system according to claim 1, characterized in that: The battery module is a high-voltage power battery, and the power supply topology also includes: A high-voltage flyback isolation power supply is used to perform DC / DC conversion on the high-voltage direct current output by the high-voltage power battery and then supply power to the resolver excitation circuit (30).

3. The power supply topology system according to claim 1, characterized in that: The battery module is a low-voltage battery, and the power supply topology also includes: A low-voltage flyback isolation power supply is used to perform DC / DC conversion on the low-voltage direct current output by the low-voltage storage battery and then supply power to the resolver excitation circuit (30).

4. The power supply topology system according to claim 2, characterized in that: The power supply topology also includes: An SBC module (50), wherein an input end of the SBC module (50) is connected to an output end of the high-voltage flyback isolation power supply, and an output end of the SBC module (50) is connected to an input end of the motor drive circuit (40), and the SBC module (50) is used to convert the first direct current into a fifth direct current, and the fifth direct current is used to power a low-voltage side of the motor drive circuit (40).

5. The power supply topology system according to claim 3, characterized in that: The power supply topology also includes: An SBC module (50), wherein an input end of the SBC module (50) is connected to an output end of the low-voltage battery.

6. The power supply topology system according to claim 4, characterized in that: The output end of the SBC module (50) is connected to the input end of the resolver excitation circuit (30), and the fifth direct current is used to supply power to the resolver excitation circuit (30).

7. The power supply topology system according to claim 4, characterized in that: The output end of the SBC module (50) is connected to the input end of the vehicle control circuit (60), and the fifth direct current is used to supply power to the vehicle control circuit (60).

8. A motor drive controller, characterized in that: The motor drive controller comprises a power supply topology system, and the power supply topology system is the power supply topology system according to any one of claims 1 to 7.

9. The motor drive controller according to claim 8, characterized in that: The motor drive controller further comprises: a motor drive circuit (40), a vehicle control circuit (60), a power module (70), and a resolver excitation circuit (30), wherein the power module (70) is used to convert the high-voltage direct current output by the high-voltage power battery into a first alternating current, and the first alternating current is used to drive the motor; the vehicle control circuit (60) is used to control the motor drive circuit (40) to drive the power module (70); the resolver excitation circuit (30) is connected to the motor signal, and the resolver excitation circuit (30) is used to decode the resolver signal connected to the motor.

10. A vehicle, characterized in that: It includes a battery module, a motor and a motor drive controller, wherein the motor drive controller is the motor drive controller as claimed in claim 8, and the motor drive controller is used to convert the high-voltage direct current output by the high-voltage power battery into alternating current to drive the motor.

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