CN214929030U

CN214929030U - Power assembly and electric automobile

Info

Publication number: CN214929030U
Application number: CN202121242087.5U
Authority: CN
Inventors: 陈国斯; 代康伟; 蒋荣勋
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-11-30
Anticipated expiration: 2031-06-04

Abstract

The utility model provides a power assembly and electric automobile relates to vehicle technical field. This power assembly includes: the device comprises a motor controller, a driving motor and an information storage device; wherein the motor controller is connected with the driving motor and the information storage device; the information storage device sends a first signal to the motor controller, and the first signal is used for feeding back the initial rotation angle of a driving motor in the power assembly and fault information of parts of the power assembly. The power assembly of the embodiment of the utility model stores the corresponding rotational angle information into the information storage device by arranging the information storage device; meanwhile, the fault information of the parts of the power assembly is stored in the information storage device, the problem that the rotary angle is difficult to adjust manually is solved through a storage mode of digital information storage, the fault positioning speed of the fault parts after returning to a factory is greatly improved, and necessary precondition is provided for the automatic production of the power assembly.

Description

Power assembly and electric automobile

Technical Field

The utility model relates to the technical field of vehicles, in particular to power assembly and electric automobile.

Background

The electrical position between the rotor and the stator of the motor needs to be accurately identified by the drive. Before the motor leaves a factory, the rotation angle is manually adjusted by a manufacturer, so that the unified angle is ensured when the motor leaves the factory, but the operation is still difficult for the manufacturer. The rotary angle is attached to the motor in a two-dimensional code or similar identification mode by a manufacturer when the motor leaves a factory, so that the driver is directly input according to the identification angle when the whole vehicle is off line, the operation of inputting the angle is still required, and the operation has the risk of failure. The number information of the power assembly is attached to the outer surface in the form of scale information, so that the machine identification is not facilitated; the fault information of the power assembly can be recorded only through the background of the whole vehicle, and a supplier cannot directly obtain the fault information when the power assembly goes wrong and returns to a factory.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a power assembly and electric automobile for can not conveniently directly acquire the problem of the fault information of electric position and power assembly spare part between electric motor rotor and stator through power assembly among the solution prior art.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a powertrain, comprising:

the device comprises a motor controller, a driving motor and an information storage device;

wherein the motor controller is connected with the driving motor and the information storage device; the information storage device sends a first signal to the motor controller, and the first signal is used for feeding back the initial rotation angle of a driving motor in the power assembly and fault information of parts of the power assembly.

Further, the power assembly further comprises:

the information storage device is fixedly arranged on the inner side of the rotary variable cover of the driving motor.

Further, the power assembly further comprises:

the communication interface is arranged on the motor controller.

Further, the first signal is also used for feeding back the number and the version information of the power assembly, the number information of the power assembly parts and the state information of the driving motor.

Further, the motor controller and the information storage device are communicated through a two-wire serial bus.

Further, the information storage device is sealed by epoxy glue.

Further, the information storage device is a vehicle-scale electric erasing storage chip.

The embodiment of the utility model provides an electric automobile is still provided, include as above power assembly.

The utility model has the advantages that:

the power assembly provided by the embodiment of the utility model is provided with the information storage device, and only the corresponding rotational angle information needs to be stored in the information storage device without being fixed; and simultaneously storing the fault information of the power assembly parts into the information storage device. The utility model discloses power assembly passes through digital information storage's storage mode, removes the problem of artifical adjustment rotary angle difficulty from, and has greatly improved the trouble positioning speed after the trouble returns the factory, provides necessary prerequisite for power assembly's automated production.

Drawings

FIG. 1 is a schematic structural view of a powertrain according to an embodiment of the present invention;

fig. 2 shows a signal connection diagram of a powertrain according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model discloses to the problem that can not conveniently directly acquire the fault information of electric position and the power assembly spare part between electric motor rotor and stator through the power assembly among the prior art, provide a power assembly and electric automobile.

As shown in fig. 1 and 2, an embodiment of the present invention provides a power assembly, including:

a motor controller 1, a drive motor 2, and an information storage device 3;

wherein the motor controller 1 is connected with the driving motor 2 and the information storage device 3; the information storage device 3 sends a first signal to the motor controller 1, wherein the first signal is used for feeding back the initial rotation angle of the driving motor 2 in the power assembly and the fault information of the power assembly parts.

In an embodiment of the utility model, the power assembly digitally stores the rotation angle information, and the rotation angle information is automatically written by a production line during production and is automatically read by a driver during assembly without angle adjustment; the information such as the serial number and the version of the power assembly is digitally stored, and online tracking and monitoring are realized; the power assembly fault information is stored off line, and the assembly fault can be quickly tracked.

Optionally, the powertrain further comprises:

the information storage device 3 is fixedly mounted on the inner side 4 of the rotary cover of the driving motor 2.

Will information storage device sets up in driving motor changes lid inboard soon, dismantles the convenience and is difficult for losing.

Optionally, the powertrain further comprises:

and the communication interface 5 is arranged on the motor controller 1.

As shown in fig. 2, when the external device reads information, a direct current voltage may be introduced into the information storage device through the low voltage interface; when the motor controller reads the information, the motor controller directly supplies power to the information storage device.

The same communication and interface scheme is adopted between the motor controller and the external equipment and the information storage device. And the communication interfaces between the motor controller and the external equipment and the information storage device are the same, because the power assembly can only be accessed to one read-write equipment physically, the design of mutual exclusion on software or hardware is saved by adopting the same communication interface between the motor controller and the external equipment and the information storage device.

Optionally, the first signal is also used for feeding back the number of the powertrain, version information, information on the number of the powertrain components, and status information of the driving motor 2.

Alternatively, the motor controller 1 and the information storage device 3 communicate with each other via a two-wire serial bus.

Optionally, the information storage device 3 is sealed by epoxy glue.

Optionally, the information storage device 3 is a vehicle-scale electric erasing and writing storage chip.

In an embodiment of the present invention, the information storage device may adopt a vehicle gauge M4C64-WMN6P, and the communication adopts an I2C bus. The power supply voltage is 2.5V-4.5VDC, a 32Byte data storage format is adopted, the capacity is 64kbit, the erasable life is more than 100 ten thousand times, and the communication speed is 400 kHz.

The utility model discloses information storage device's basic working method: after the motor controller is connected with the information storage device, the motor controller firstly sends a data reading request through an I2C bus after being electrified at low voltage, and the device receives a request signal and feeds back state information (fault information, initial angle of a motor rotor and the like) of each component of the assembly and number information of each component of the power assembly. After receiving the feedback information, the motor controller performs corresponding adjustment, including a calibration program of the motor controller, a rotary change initial angle and the like; if assembly-related fault information occurs in the operation process, the motor controller writes the motor fault into the information storage device, and extra data communication is not performed in the whole operation process to ensure the stability of the system; when the product is off-line, the assembly supplier can write in the initial angle information of the rotary transformer and the number information of each component of the assembly by adopting external equipment. Fault information may also be cleared in the case of rework, or a new information storage device may be replaced.

The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

Claims

1. A powertrain, comprising:

2. The locomotion assembly of claim 1, further comprising:

3. The locomotion assembly of claim 1, further comprising:

the communication interface is arranged on the motor controller.

4. The powertrain of claim 1, wherein the first signal is further used for feeding back a powertrain number, version information, powertrain component number information, and drive motor status information.

5. A powertrain according to claim 1, wherein the motor controller communicates with the information storage device via a two-wire serial bus.

6. The locomotion assembly of claim 1, wherein the information storage device is sealed by epoxy glue.

7. The powertrain system of claim 1, wherein the information storage device is a vehicle-scale electrical erasable and writable memory chip.

8. An electric vehicle comprising a powertrain according to any one of claims 1 to 7.