Electric drive system and vehicle

Abstract

The utility model relates to an electric driving system and a vehicle. The electric driving system comprises a charging port; the three-phase winding comprises a first-phase winding, a second-phase winding and a third-phase winding; the driving module is provided with a first driving end, a second driving end and a third driving end; wherein a first phase line is connected between the first driving end and the first phase winding, a second phase line is connected between the second driving end and the second phase winding, a third phase line is connected between the third driving end and the third phase winding, and a neutral line is connected between a neutral point of the three-phase winding and the charging port; and the magnetic ring assembly sleeves the first phase line, the second phase line, the third phase line and the neutral line. Therefore, by arranging the magnetic ring assemblies on the first phase line, the second phase line, the third phase line and the neutral line in a sleeving mode, EMC can be effectively restrained, the electric corrosion phenomenon of the bearing is prevented, and meanwhile the working temperature rise of the magnetic ring assemblies is remarkably reduced.

Description

Technical Field

[0001] This application relates to the field of electric drive technology, and more particularly to an electric drive system and vehicle. Background Technology

[0002] High-voltage electric vehicles (such as 800V systems) can reduce losses and improve efficiency, but charging infrastructure has mixed voltage levels (400V / 800V coexisting), requiring high-voltage vehicles to be upgraded to low-voltage charging stations. Related technologies use reusable electric drive system hardware for voltage boosting, but this leads to increased bus voltage and switching frequency, causing problems such as increased EMC (Electromagnetic Compatibility) interference and increased risk of bearing electrolytic corrosion. Utility Model Content

[0003] This application provides an electric drive system and vehicle. By using a magnetic ring assembly fitted onto the first phase line, second phase line, third phase line, and neutral line, this application can effectively suppress EMC (electromagnetic compatibility) and prevent bearing electro-corrosion, while significantly reducing the operating temperature rise of the magnetic ring assembly itself. The technical solution of this application is as follows:

[0004] The first aspect of this application provides an electric drive system, comprising:

[0005] Charging port;

[0006] A three-phase winding, comprising a first-phase winding, a second-phase winding, and a third-phase winding;

[0007] A drive module having a first drive end, a second drive end, and a third drive end; wherein, a first phase line is connected between the first drive end and the first phase winding, a second phase line is connected between the second drive end and the second phase winding, a third phase line is connected between the third drive end and the third phase winding, and a neutral line is connected between the neutral point of the three-phase winding and the charging port.

[0008] A magnetic ring assembly is sleeved on the first phase line, the second phase line, the third phase line, and the neutral line.

[0009] A second aspect of this application provides a vehicle comprising an electric drive system as described above.

[0010] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0011] The electric drive system of this application embodiment includes: a charging port, a three-phase winding, a drive module, and a magnetic ring assembly; wherein, the three-phase winding includes a first phase winding, a second phase winding, and a third phase winding; the drive module has a first drive end, a second drive end, and a third drive end, wherein a first phase line is connected between the first drive end and the first phase winding, a second phase line is connected between the second drive end and the second phase winding, a third phase line is connected between the third drive end and the third phase winding, and a neutral line is connected between the neutral point of the three-phase winding and the charging port; the magnetic ring assembly is sleeved on the first phase line, the second phase line, the third phase line, and the neutral line. Therefore, the electric drive system of this application can operate in drive mode or boost mode. Through the magnetic ring assembly sleeved on the first phase line, the second phase line, the third phase line, and the neutral line, EMC can be effectively suppressed, bearing electro-corrosion can be prevented, and the operating temperature rise of the magnetic ring assembly itself can be significantly reduced.

[0012] 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

[0013] 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, and do not constitute an undue limitation of this application.

[0014] Figure 1 This is a schematic diagram of an electric drive system according to an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of a magnetic ring assembly according to an embodiment of this application;

[0016] Figure 3 This is a schematic diagram of a magnetic ring assembly according to another embodiment of this application;

[0017] Figure 4 This is a functional block diagram of a vehicle shown in an exemplary embodiment. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0019] It should be noted that the terms "first," "second," etc., used in the specification, claims, 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. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0020] The electric drive system and vehicle of embodiments of this application are described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of an electric drive system according to an embodiment of this application.

[0022] like Figure 1 As shown, the electric drive system 100 of this application embodiment includes: a charging port 110, a three-phase winding 120, a drive module 130, and a magnetic ring assembly 140.

[0023] The three-phase winding 120 includes a first-phase winding LA, a second-phase winding LB, and a third-phase winding LC;

[0024] The drive module 130 has a first drive terminal Q1, a second drive terminal Q2, and a third drive terminal Q3; wherein, the first drive terminal Q1 is connected to the first phase winding LA by a first phase line, the second drive terminal Q2 is connected to the second phase winding LB by a second phase line, the third drive terminal Q3 is connected to the third phase winding LC by a third phase line, and the neutral point Q4 of the three-phase winding 120 is connected to the charging port 110 by a neutral line;

[0025] The magnetic ring assembly 140 is fitted onto the first phase line, the second phase line, the third phase line, and the neutral line.

[0026] Figure 2 This is a schematic diagram of a magnetic ring assembly according to an embodiment of this application; Figure 3 This is a schematic diagram of a magnetic ring assembly according to another embodiment of this application.

[0027] like Figure 2 and Figure 3 As shown, the magnetic ring assembly 140 includes:

[0028] Non-metallic casing 141;

[0029] The magnetic ring body 160 is disposed inside the non-metallic outer casing 141.

[0030] The first conductor 142 has its first end connected to the first phase winding LA, and its second end passes through the non-metallic shell 141 and is connected to the first driving terminal Q1.

[0031] The second conductor 143 has its first end connected to the second phase winding LB, and its second end passes through the non-metallic shell 141 and is connected to the second drive terminal Q2.

[0032] The third conductor 144 has its first end connected to the third phase winding LC, and its second end passes through the non-metallic shell 141 and is connected to the third driving terminal Q3.

[0033] The fourth conductor 145 has its first end connected to the neutral point Q4 of the three-phase winding 120, and its second end passes through the non-metallic casing 141 and is connected to the charging port 110.

[0034] The first conductor 142, the second conductor 143, the third conductor 144 and the fourth conductor 145 are located inside the magnetic ring body 160 and are distributed at intervals within the non-metallic outer shell 141.

[0035] like Figure 2 and Figure 3 As shown, the non-metallic casing 141 is provided with a first channel 146, a second channel 147, a third channel 148 and a fourth channel 149 that are spaced apart;

[0036] The first conductor 142 penetrates the first channel 146;

[0037] The second conductor 143 penetrates the second channel 147;

[0038] The third conductor 144 penetrates the third channel 148;

[0039] The fourth conductor 145 passes through the fourth channel 149.

[0040] like Figure 2 and Figure 3 As shown, the non-metallic casing 141 is further provided with a first extension 1411, a second extension 1412, and a third extension 1413; wherein,

[0041] The first extension 1411 is disposed opposite to the first channel 146, and the second end of the first conductor 142 extends from the first channel 146 to the first extension 1411 and is detachably connected to the first drive end Q1.

[0042] The second extension 1412 is disposed opposite to the second channel 147, and the second end of the second conductor 143 extends from the second channel 147 to the second extension 1412 and is detachably connected to the second drive end Q2.

[0043] The third extension 1413 is disposed opposite to the third channel 148, and the second end of the third conductor 144 extends from the third channel 148 to the third extension 1413 and is detachably connected to the third drive end Q3.

[0044] like Figure 2 and Figure 3 As shown, the magnetic ring assembly 140 also includes:

[0045] The first nut 150 is disposed at the second end of the first conductor 142, and the first drive end Q1 is connected to the second end of the first conductor 142 through the first nut 150;

[0046] The second nut 151 is disposed at the second end of the second conductor 143, and the second driving end Q2 is connected to the second end of the second conductor 143 through the second nut 151.

[0047] The third nut 152 is disposed at the second end of the third conductor 144, and the third drive end Q3 is connected to the second end of the third conductor 144 through the third nut 152.

[0048] like Figure 2 and Figure 3 As shown, the magnetic ring assembly 140 also includes:

[0049] The first sealing ring 153 is sleeved on the first extension 1411;

[0050] The second sealing ring 154 is sleeved on the second extension 1412;

[0051] The third sealing ring 155 is fitted onto the third extension 1413.

[0052] like Figure 1 As shown, the drive module 130 includes: a first drive unit 131, a second drive unit 132, and a third drive unit 133; wherein,

[0053] The first node formed by connecting the first end of the first drive unit 131, the first end of the second drive unit 132, and the first end of the third drive unit 133 serves as the positive terminal of the drive module 130.

[0054] The second node formed by connecting the second end of the first driving unit 131, the second end of the second driving unit 132, and the second end of the third driving unit 133 serves as the negative end of the driving module 130.

[0055] The third end of the first driving unit 131 serves as the first driving end Q1;

[0056] The third end of the second drive unit 132 serves as the second drive end Q2;

[0057] The third terminal of the third drive unit 133 is designated as the third drive terminal Q3.

[0058] like Figure 1 As shown, the first drive unit 131 includes:

[0059] The first power device M1, the first end of the first power device M1 serves as the first end of the first driving unit 131, and the second end of the first power device M1 serves as the first driving end Q1.

[0060] The second power device M2 has its first end connected to the second end of the first power device M1, and the second end of the second power device M2 serves as the second end of the first driving unit 131.

[0061] like Figure 1 As shown, the first drive unit 131 further includes:

[0062] The first diode D1 has its cathode connected to the first terminal of the first power device M1, and its anode connected to the second terminal of the first power device M1.

[0063] The cathode of the second diode D2 is connected to the first terminal of the second power device M2, and the anode of the second diode D2 is connected to the second terminal of the second power device M2.

[0064] like Figure 1 As shown, the second drive unit 132 includes:

[0065] The first power device M3, the first end of the first power device M3 serves as the first end of the second driving unit 132, and the second end of the first power device M3 serves as the second driving end Q2.

[0066] The second power device M4 has its first end connected to the second end of the first power device M3, and the second end of the second power device M4 serves as the second end of the second drive unit 132.

[0067] like Figure 1 As shown, the second drive unit 132 further includes:

[0068] The first diode D3 has its cathode connected to the first terminal of the first power device M3, and its anode connected to the second terminal of the first power device M3.

[0069] The cathode of the second diode D4 is connected to the first terminal of the second power device M4, and the anode of the second diode D4 is connected to the second terminal of the second power device M4.

[0070] like Figure 1 As shown, the third drive unit 133 includes:

[0071] The first power device M5, the first end of the first power device M5 serves as the first end of the third drive unit 133, and the second end of the first power device M5 serves as the third drive end Q3.

[0072] The second power device M6 has its first end connected to the second end of the first power device M5, and the second end of the second power device M6 serves as the second end of the third drive unit 133.

[0073] like Figure 1 As shown, the third drive unit 133 also includes:

[0074] The first diode D5 has its cathode connected to the first terminal of the first power device M5, and its anode connected to the second terminal of the first power device M5.

[0075] The cathode of the second diode D6 is connected to the first terminal of the second power device M6, and the anode of the second diode D6 is connected to the second terminal of the second power device M6.

[0076] like Figure 1 As shown, the electric drive system 100 also includes a power supply BAT. The positive terminal of the power supply BAT is connected to the positive terminal of the drive module 130 via a first resistor, and the negative terminal of the power supply BAT is connected to the negative terminal of the drive module 130. The power supply BAT can provide power to the drive module 130.

[0077] like Figure 1 As shown, the electric drive system 100 also includes a capacitor C. The first terminal of the capacitor C is connected to the positive terminal of the drive module 130 via a second resistor, and the capacitor C is connected to the negative terminal of the drive module 130.

[0078] When the electric drive system 100 is operating in drive mode, the neutral point Q4 is in the off state, and no current flows through the neutral line. The magnetic ring assembly 140 filters out the three-phase common-mode current, exerts the common-mode inductance effect, significantly improves the electromagnetic compatibility of the electric drive system 100, and effectively suppresses shaft current corrosion.

[0079] When the electric drive system 100 switches to boost mode, the current flowing through the neutral point Q4 is equal in magnitude and opposite in direction to the vector sum of the three phase lines (first phase line, second phase line, and third phase line), making the total current flowing through the magnetic ring body 160 zero. This ensures that no alternating magnetic field is generated inside the magnetic ring body 160, thereby avoiding core loss and the resulting temperature rise problem.

[0080] In summary, the electric drive system of this application includes: a charging port, a three-phase winding, a drive module, and a magnetic ring assembly; wherein the three-phase winding includes a first phase winding, a second phase winding, and a third phase winding; the drive module has a first drive end, a second drive end, and a third drive end, wherein a first phase line is connected between the first drive end and the first phase winding, a second phase line is connected between the second drive end and the second phase winding, a third phase line is connected between the third drive end and the third phase winding, and a neutral line is connected between the neutral point of the three-phase winding and the charging port; the magnetic ring assembly is sleeved on the first phase line, the second phase line, the third phase line, and the neutral line. Therefore, the electric drive system of this application can operate in drive mode or boost mode. Through the magnetic ring assembly sleeved on the first phase line, the second phase line, the third phase line, and the neutral line, EMC can be effectively suppressed, bearing electro-corrosion can be prevented, and the operating temperature rise of the magnetic ring assembly itself can be significantly reduced.

[0081] Based on the above embodiments, this application also proposes a vehicle.

[0082] Figure 4 This is a functional block diagram illustrating an exemplary embodiment of a vehicle. For example, vehicle 400 can be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicles. Vehicle 400 can be an autonomous vehicle, a semi-autonomous vehicle, or a non-autonomous vehicle.

[0083] Reference Figure 4 The vehicle 400 may include various subsystems, such as an infotainment system 410, a perception system 420, a decision control system 430, a drive system 440 (including at least the electric drive system 100 of this application), and a computing platform 450. The vehicle 400 may also include more or fewer subsystems, and each subsystem may include multiple components. Furthermore, each subsystem and each component of the vehicle 400 can be interconnected via wired or wireless means.

[0084] In some embodiments, the infotainment system 410 may include a communication system, an entertainment system, and a navigation system, etc.

[0085] The perception system 420 may include several sensors for sensing information about the environment surrounding the vehicle 400. For example, the perception system 420 may include a global positioning system (which may be GPS, BeiDou, or other positioning systems), an inertial measurement unit (IMU), lidar, millimeter-wave radar, ultrasonic radar, and a camera device.

[0086] The decision control system 430 may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0087] The drive system 440 may include components that provide powered motion to the vehicle 400. In one embodiment, the drive system 440 may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of internal combustion engines, electric motors, and compressed air engines. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0088] Some or all of the functions of the vehicle 400 are controlled by a computing platform 450. The computing platform 450 may include at least one processor 451 and a memory 452, the processor 451 being able to execute instructions 453 stored in the memory 452.

[0089] Processor 451 can be any conventional processor, such as a commercially available CPU. The processor may also include, for example, a Graphics Processing Unit (GPU), a Field Programmable Gate Array (FPGA), a System on Chip (SOC), an Application Specific Integrated Circuit (ASIC), or a combination thereof.

[0090] The memory 452 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0091] In addition to instruction 453, memory 452 can also store data, such as road maps, route information, vehicle position, direction, speed, and other data. The data stored in memory 452 can be used by computing platform 450.

[0092] In this embodiment of the application, processor 451 can execute instruction 453.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0094] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0095] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

[0096] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An electric drive system, characterized in that, include: Charging port; A three-phase winding, comprising a first-phase winding, a second-phase winding, and a third-phase winding; A drive module having a first drive end, a second drive end, and a third drive end; wherein, a first phase line is connected between the first drive end and the first phase winding, a second phase line is connected between the second drive end and the second phase winding, a third phase line is connected between the third drive end and the third phase winding, and a neutral line is connected between the neutral point of the three-phase winding and the charging port. A magnetic ring assembly is sleeved on the first phase line, the second phase line, the third phase line, and the neutral line.

2. The system according to claim 1, characterized in that, The magnetic ring assembly includes: Non-metallic casing; A magnetic ring body, wherein the magnetic ring body is disposed within the non-metallic outer casing; A first conductor, the first end of which is connected to the first phase winding, and the second end of which passes through the non-metallic shell and is connected to the first driving end; The second conductor has a first end connected to the second phase winding, and a second end of the second conductor passes through the non-metallic shell and is connected to the second driving end; The third conductor has a first end connected to the third phase winding and a second end that passes through the non-metallic shell and is connected to the third driving end. The fourth conductor has its first end connected to the neutral point of the three-phase winding, and its second end penetrates the non-metallic casing and is connected to the charging port. The first conductor, the second conductor, the third conductor, and the fourth conductor are located within the magnetic ring body and are distributed at intervals within the non-metallic outer shell.

3. The system according to claim 2, characterized in that, The non-metallic outer shell is provided with a first channel, a second channel, a third channel and a fourth channel that are spaced apart; The first conductor passes through the first channel; The second conductor extends through the second channel; The third conductor passes through the third channel; The fourth conductor extends through the fourth channel.

4. The system according to claim 3, characterized in that, The non-metallic outer casing is further provided with a first extension, a second extension, and a third extension; wherein... The first extension is disposed opposite to the first channel, and the second end of the first conductor extends from the first channel to the first extension and is detachably connected to the first driving end; The second extension is disposed opposite to the second channel, and the second end of the second conductor extends from the second channel to the second extension and is detachably connected to the second drive end; The third extension is disposed opposite to the third channel, and the second end of the third conductor extends from the third channel to the third extension and is detachably connected to the third driving end.

5. The system according to claim 2, characterized in that, The magnetic ring assembly also includes: A first nut is disposed at the second end of the first conductor, and the first driving end is connected to the second end of the first conductor through the first nut; The second nut is disposed at the second end of the second conductor, and the second driving end is connected to the second end of the second conductor through the second nut; The third nut is disposed at the second end of the third conductor, and the third driving end is connected to the second end of the third conductor through the third nut.

6. The system according to claim 4, characterized in that, The magnetic ring assembly also includes: A first sealing ring is fitted onto the first extension. The second sealing ring is fitted onto the second extension; The third sealing ring is fitted onto the third extension.

7. The electric drive system according to claim 1, characterized in that, The driving module includes: a first driving unit, a second driving unit, and a third driving unit; wherein, The first node formed by connecting the first end of the first driving unit, the first end of the second driving unit, and the first end of the third driving unit serves as the positive terminal of the driving module. The second node formed by connecting the second end of the first driving unit, the second end of the second driving unit, and the second end of the third driving unit serves as the negative end of the driving module. The third end of the first driving unit serves as the first driving end; The third end of the second driving unit serves as the second driving end; The third end of the third driving unit serves as the third driving end.

8. The electric drive system according to claim 7, characterized in that, The value of i is 1, 2, or 3. The i-th driving unit includes: A first power device, wherein a first end of the first power device serves as the first end of the i-th driving unit, and a second end of the first power device serves as the i-th driving end; The second power device has a first end connected to the second end of the first power device, and the second end of the second power device serves as the second end of the i-th driving unit.

9. The electric drive system according to claim 8, characterized in that, The i-th driving unit further includes: A first diode, wherein the cathode of the first diode is connected to a first terminal of the first power device, and the anode of the first diode is connected to a second terminal of the first power device; The second diode has its cathode connected to the first terminal of the second power device and its anode connected to the second terminal of the second power device.

10. A vehicle, characterized in that, include: The electric drive system as described in any one of claims 1-9.

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