Motor system of vehicle active suspension system

Abstract

The utility model provides a motor system of a vehicle active suspension system, comprising a vehicle power battery used for providing a power source for a new energy vehicle; the motor controller is connected with a vehicle power battery; and the active suspension motor is connected with the motor controller, and the vehicle power battery supplies power to the active suspension motor. According to the motor system of the vehicle active suspension system, the motor system of the vehicle active suspension system is provided with the active suspension motor, after the active suspension motor is connected with a vehicle power battery to supply power, the requirement of a vehicle for a low-voltage storage battery or a voltage converter can be reduced, and the effects of reducing cost and weight of the whole vehicle are achieved; the fuel consumption or the power consumption of the vehicle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a motor system of a vehicle active suspension system. Background Art

[0002] With the development of new energy vehicles, particularly pure electric and hybrid electric vehicles, users' demands for driving comfort continue to rise. More and more technologies are being applied to vehicles to enhance the driving experience. Among these, many vehicles are beginning to utilize active suspension systems to improve driver and passenger comfort, stability, and safety during driving. The actuator in the shock absorber system, a common feature of active suspension systems on some vehicles, is also a motor.

[0003] In the prior art, the power source of the active suspension system adopts the traditional low-voltage battery in the car, and the supply voltage range is usually 12V to 48V.

[0004] In the process of realizing the present utility model, the inventors found that there are at least the following problems in the prior art: the power source of the active suspension motor adopts the low-voltage battery in the car, and the low-voltage battery will increase the manufacturing cost of the new energy vehicle, increase the weight of the vehicle, and lead to increased fuel consumption or electricity consumption. Utility Model Content

[0005] Therefore, the purpose of the present invention is to provide a motor system for a vehicle active suspension system, which at least to a certain extent solves one of the technical problems of the related art.

[0006] To achieve the above objectives, the present invention provides a motor system for a vehicle active suspension system, comprising:

[0007] Vehicle power batteries, used to provide power sources for new energy vehicles;

[0008] A motor controller connected to the vehicle's power battery;

[0009] An active suspension motor is connected to the motor controller, and the vehicle power battery supplies power to the active suspension motor.

[0010] According to the motor system of the vehicle active suspension system of the utility model, the motor system of the vehicle active suspension system has an active suspension motor. After the active suspension motor is connected to the vehicle power battery for power supply, the vehicle can reduce the demand for low-voltage batteries or voltage converters, thereby achieving the effect of reducing the cost and weight of the entire vehicle, and realizing a reduction in vehicle fuel consumption or power consumption.

[0011] According to one embodiment of the present invention, the power supply voltage of the vehicle power battery is 300 to 800 volts.

[0012] According to one embodiment of the present invention, the active suspension motor includes:

[0013] Motor housing;

[0014] A front end cover is provided at one end of the motor housing;

[0015] A stator assembly is mounted inside the motor housing;

[0016] The rotor assembly is rotatably arranged in the stator assembly.

[0017] According to an embodiment of the present invention, an annular groove is provided on the front end cover, and a sealing ring is installed on the annular groove.

[0018] According to one embodiment of the present utility model, the active suspension motor also includes a motor shaft, the rotor assembly is sleeved on the motor shaft, the motor shaft is installed with a first bearing at one end close to the front end cover, and the motor shaft is installed with a second bearing and a rotary rotor at one end away from the front end cover.

[0019] According to one embodiment of the present utility model, the active suspension motor also includes a resolver rear cover and a resolver stator, the resolver rear cover is arranged at one end of the motor housing away from the front end cover, the resolver stator is connected to the interior of the motor housing, and the resolver stator is coaxially arranged with the resolver rotor.

[0020] According to one embodiment of the present invention, the active suspension motor is provided with a low-voltage connector and a high-voltage connector.

[0021] According to one embodiment of the present invention, the stator winding of the stator assembly is in the form of a centralized winding or a distributed winding.

[0022] According to one embodiment of the present invention, the magnetic steel installation structure of the rotor assembly is surface-mounted or embedded.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to denote the same components.

[0025] Figure 1This is a block diagram of a motor system of a vehicle active suspension system proposed in one embodiment of the present utility model.

[0026] Figure 2 It is a cross-sectional view of a motor of a motor system of a vehicle active suspension system proposed in one embodiment of the present utility model.

[0027] Figure 3 It is a schematic diagram of the assembly of a motor of a motor system of a vehicle active suspension system proposed in one embodiment of the present utility model.

[0028] Figure 4 This is a structural schematic diagram of a rotor assembly of a motor according to an embodiment of the present utility model.

[0029] Figure 5 This is a structural schematic diagram of a rotor assembly of a motor according to another embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 100-Vehicle power battery, 200-Motor controller, 300-Active suspension motor, 301-Motor housing, 302-Stator assembly, 303-Rotor assembly, 304-First bearing, 305-Second bearing, 306-Low-voltage connector, 307-Resolver stator, 308-Resolver rear cover, 309-High-voltage connector, 310-Resolver rotor, 311-Front end cover, 312-Sealing ring, 3021-Insulating bracket, 3031-Rotor core, 3032-Magnetic steel. DETAILED DESCRIPTION

[0032] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0033] Figure 1 This is a block diagram of the motor system of the vehicle active suspension system proposed in one embodiment of the present invention. Figure 1 The present invention discloses a motor system for a vehicle active suspension system, including a vehicle power battery 100, a motor controller 200, and an active suspension motor 300. The vehicle power battery 100 is used to provide a power source for new energy vehicles. The motor controller 200 is connected to the vehicle power battery 100. The active suspension motor 300 is connected to the motor controller 200, and the vehicle power battery 100 supplies power to the active suspension motor 300.

[0034] The vehicle's power battery 100 receives and stores high-voltage DC power from the charging device and provides high-voltage DC power to new energy vehicles. It is typically located under the vehicle, between the front and rear axles and the side rails. The motor controller 200 regulates the speed, torque, and direction of the active suspension motor 300. The active suspension motor 300 acts as an actuator, adjusting the stiffness and height of the suspension according to commands from the motor controller 200.

[0035] For example, suppose a vehicle's sensors detect significant vibration while driving over a bumpy road. The motor controller 200 analyzes the data and determines that the suspension stiffness needs to be increased to reduce the vibration. The motor controller 200 issues a command to the active suspension motor 300, which drives the suspension's piston or screw, increasing the stiffness and thus reducing the vibration amplitude of the vehicle body.

[0036] According to the motor system of the vehicle active suspension system in the embodiment of the present utility model, the vehicle active suspension system has an active suspension motor. After the active suspension motor is connected to the vehicle power battery for power supply, the vehicle can reduce the demand for low-voltage batteries or voltage converters, thereby achieving the effect of reducing the cost and weight of the entire vehicle, and realizing a reduction in vehicle fuel consumption or power consumption.

[0037] Combine Figure 2 、 Figure 3 As shown, in some embodiments, in a motor system of a vehicle active suspension system, an active suspension motor 300 includes: a motor housing 301; a front end cover 311 disposed at one end of the motor housing 301; a stator assembly 302 mounted within the motor housing 301; and a rotor assembly 303 rotatably disposed within the stator assembly 302. The stator assembly 302 has an insulating bracket 3021 that provides support for the winding, ensuring that the winding remains stable during motor operation and preventing damage caused by vibration and short circuits between the windings.

[0038] The motor housing is the main body of the motor, providing physical support. The stator assembly is the stationary part of the motor, responsible for generating the magnetic field. The rotor assembly is the rotating part of the motor, generating torque by interacting with the magnetic field generated by the stator assembly.

[0039] In some embodiments, the vehicle power battery 100 operates at a voltage of 300 to 800 volts to ensure sufficient energy density and power output. To accommodate high-voltage operating environments, the active suspension motor 300 utilizes materials with higher insulation grades, thicker wires, and a multi-layer structure for the windings.

[0040] In one example, an annular groove is provided on the front end cover 311, and a sealing ring 312 is installed on the annular groove. The sealing ring 312 can play a sealing role, so that the front end cover 311 forms a sealing surface with external parts to prevent lubricating oil from leaking.

[0041] Active suspension motor 300 also includes a motor shaft, on which rotor assembly 303 is sleeved. A first bearing 304 is mounted on the end of the motor shaft near front end cap 311, while a second bearing 305 and resolver rotor 310 are mounted on the end of the motor shaft away from front end cap 311. The first bearing 304 and second bearing 305 work together to ensure smooth operation of the motor shaft.

[0042] Active suspension motor 300 also includes a resolver rear cover 308 and a resolver stator 307. Resolver rear cover 308 is located at the end of motor housing 301 away from front cover 311. Resolver stator 307 is connected to the interior of motor housing 301 and is coaxially arranged with a resolver rotor 310. Resolver rotor 310 and resolver stator 307 work together to measure the rotation angle of the motor shaft and provide position feedback, which is crucial for precise control of the active suspension system.

[0043] Active suspension motor 300 is also equipped with a low-voltage connector 306 and a high-voltage connector 309. The relative positioning of low-voltage connector 306 and high-voltage connector 309 is designed based on practical needs and is not specifically limited. Low-voltage connector 306 is used to connect to the motor's low-voltage circuitry, typically transmitting control signals, sensor signals, etc. High-voltage connector 309 is responsible for transmitting the high-voltage power supply for the motor, such as the high-voltage DC power provided by the vehicle's power battery.

[0044] In some embodiments, the stator winding of stator assembly 302 is either concentrated winding or distributed winding. In distributed winding, the winding is wound around at least two stator teeth, while in concentrated winding, the winding is wound around only one stator tooth. Concentrated winding is commonly used in low-power motors, as it is relatively simple and requires relatively little manufacturing effort. Distributed winding, on the other hand, is commonly used in high-power motors and requires more sophisticated manufacturing processes and technologies, but also results in higher power and efficiency.

[0045] In some embodiments, combined Figure 4 、 Figure 5 As shown, the magnetic steel installation structure of the rotor assembly 303 is surface mounted or embedded. Figure 4 As shown, in the surface-mounted magnet design, the magnet 3032 is attached to the surface of the rotor core 3031 to generate a magnetic field, which is suitable for small motors or occasions where the magnets need to be replaced frequently. Figure 5 As shown, in the embedded magnet design, the magnet 3032 is inserted into the motor rotor or stator to generate a magnetic field. The advantage of this design is that the magnetic field is uniform and stable, which can improve the efficiency and performance of the motor.

[0046] It is clear that the active suspension motor can be of many types, depending on the performance requirements, space requirements, and weight requirements of the motor system of the active suspension system.

[0047] It should be noted that the active suspension motor 300 of the motor system of the active suspension system can absorb vibration energy during the vibration reduction process, and recover this part of the energy to charge the vehicle power battery 100, which can improve the operating efficiency of the entire vehicle and further improve the vehicle's energy-saving and emission reduction performance.

[0048] It should be noted that, in the description of this utility model, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0049] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] In the description of the present invention, the directions or positional relationships indicated by the terms "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0052] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0053] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations 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 any one or more embodiments or examples.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A motor system for a vehicle active suspension system, characterized in that: include: A vehicle power battery (100), used to provide a power source for new energy vehicles; A motor controller (200) connected to the vehicle power battery (100); An active suspension motor (300) is connected to the motor controller (200), and the vehicle power battery (100) supplies power to the active suspension motor (300); The active suspension motor (300) comprises: Motor housing (301); A front end cover (311) is provided at one end of the motor housing (301); A stator assembly (302) is mounted inside the motor housing (301); a rotor assembly (303) rotatably disposed within the stator assembly (302); The function of the vehicle power battery (100) is to receive and store high-voltage direct current from a charging device, and to provide high-voltage direct current for new energy vehicles.

2. The motor system of the vehicle active suspension system according to claim 1, characterized in that: The vehicle power battery (100) has a supply voltage of 300 to 800 volts.

3. The motor system of the vehicle active suspension system according to claim 1, characterized in that: An annular groove is provided on the front end cover (311), and a sealing ring (312) is installed on the annular groove.

4. The motor system of the vehicle active suspension system according to claim 1, characterized in that: The active suspension motor (300) further comprises a motor shaft, the rotor assembly (303) being sleeved on the motor shaft, the motor shaft being provided with a first bearing (304) at one end close to the front end cover (311), and the motor shaft being provided with a second bearing (305) and a rotary rotor (310) at one end away from the front end cover (311).

5. The motor system of the vehicle active suspension system according to claim 4, characterized in that: The active suspension motor (300) further includes a rotary transformer rear cover (308) and a rotary transformer stator (307), wherein the rotary transformer rear cover (308) is arranged at one end of the motor housing (301) away from the front end cover (311), the rotary transformer stator (307) is connected to the interior of the motor housing (301), and the rotary transformer stator (307) is coaxially arranged with the rotary transformer rotor (310).

6. The motor system of the vehicle active suspension system according to claim 1, characterized in that: The active suspension motor (300) is provided with a low-voltage connector (306) and a high-voltage connector (309).

7. The motor system of the vehicle active suspension system according to claim 1, characterized in that: The stator winding of the stator assembly (302) is in the form of a centralized winding or a distributed winding.

8. The motor system of the vehicle active suspension system according to claim 1, characterized in that: The magnetic steel installation structure of the rotor assembly (303) is surface mounted or embedded.

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