CN212861110U

CN212861110U - Electric system of electric vehicle

Info

Publication number: CN212861110U
Application number: CN202021527884.3U
Authority: CN
Inventors: 孔伟强; 何志刚; 鲍文光; 张军; 汪仁志; 毛丹利
Original assignee: Shandong Edbang Intelligent Technology Co ltd
Current assignee: Shandong Edbang Intelligent Technology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-04-02
Anticipated expiration: 2030-07-28

Abstract

The application discloses electric motor car electric system includes intelligent control domain, power drive domain and the energy management domain that carries out communication through the bus. The intelligent control domain comprises an intelligent control module, and the intelligent control module is generated by integrating functional modules for realizing vehicle control, vehicle positioning, data communication, remote operation and information display; the power driving domain comprises a motor controller and a motor, and the motor controller is used for controlling the motor to provide power output for the whole vehicle based on a driving bus signal output by the intelligent control domain; the energy management domain comprises a charger and a battery pack and is used for providing power for the whole vehicle. The method and the device can effectively improve the safety of the whole vehicle, realize the standardization of parts and have good expansibility and compatibility.

Description

Electric system of electric vehicle

Technical Field

The utility model relates to an electric system designs technical field, especially relates to an electric motor car electrical system.

Background

With the deepening of environmental protection concepts and the rapid development of new energy, electric vehicles such as electric automobiles, electric motorcycles and the like gradually replace traditional fuel vehicles as travel tools.

The existing electric system of the electric vehicle is designed based on the traditional electric principle, the electric system of the whole vehicle generally comprises a motor controller, a battery management system, a central control system, an instrument, an alarm and vehicle body accessories, and the vehicle body accessories can be a light switch, a brake switch, an acceleration switch, front and rear headlights, a seat barrel lock and the like. The existing electric system has the defects of dispersed design, disordered functions, low safety of the whole vehicle and incapability of realizing standardization of parts, so that the electric vehicle has no good expansibility and compatibility.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an electric motor car electrical system effectively promotes the security of whole car, realizes the standardization of spare part, possesses good expansibility and compatibility.

In order to solve the above technical problem, an embodiment of the present invention provides the following technical solution:

the embodiment of the utility model provides an electric system of an electric vehicle, which comprises an intelligent control domain, a power driving domain and an energy management domain, wherein the intelligent control domain, the power driving domain and the energy management domain are communicated through a bus;

the intelligent control domain comprises an intelligent control module, and the intelligent control module is generated by integrating functional modules for realizing vehicle control, vehicle positioning, data communication, remote operation and information display;

the power driving domain comprises a motor controller and a motor, and the motor controller is used for controlling the motor to provide power output for the whole vehicle based on a driving bus signal output by the intelligent control domain;

the energy management domain comprises a charger and a battery pack and is used for providing power for the whole vehicle.

Optionally, the battery pack includes a high-voltage power supply module and a low-voltage power supply module;

the high-voltage power supply module is used for providing a high-voltage power supply for the power driving domain and the charger; and the low-voltage power supply module is used for providing a low-voltage power supply for the intelligent control domain.

Optionally, the battery pack includes a battery cell module and a power conversion module;

the battery cell module is a high-voltage power supply formed by connecting a plurality of lithium batteries in series and is used for outputting a high-voltage electric signal;

the power conversion module is used for converting the high-voltage electric signal output by the battery cell module into a low-voltage electric signal according to a preset voltage conversion condition and outputting the low-voltage electric signal.

Optionally, the battery cell module is configured to output a voltage signal of 48V, 60V, or 72V; the power supply conversion module is used for outputting a 12V voltage signal.

Optionally, the intelligent control domain, the power driving domain and the energy management domain communicate through a 485 bus or communicate through a controller local area network.

Optionally, the intelligent control module is generated after integrating an instrument, an alarm and vehicle body accessories into the central control system, and the vehicle body accessories are any one or any combination of the following:

light switch, brake switch, acceleration switch, front and back headlight, seat bucket lock.

Optionally, the central control system further integrates dual-mode bluetooth to support classic BT traditional bluetooth and BLE low power consumption bluetooth simultaneously;

the class BT is used for realizing incoming call reminding through a hands-free telephone protocol, and the BLE is used as a data communication mode between the user intelligent terminal and the vehicle-mounted terminal.

Optionally, the intelligent control domain further includes an image acquisition device, and the intelligent control module is further integrated with a functional module for implementing face recognition;

and the intelligent control module is used for sending a forced locking signal to the power driving domain to successfully start the motor if the face image of the driving position is not detected as an authorized user, and giving an alarm.

Optionally, the intelligent control module is further integrated with a function module for implementing gesture recognition, and is configured to generate a corresponding control signal by recognizing a gesture in image data sent by the image acquisition device, and send the control signal to a device for executing an operation corresponding to the control signal.

Optionally, the image acquisition device includes an infrared camera and a visible light camera.

The technical scheme provided by the application has the advantages that based on a standardized electrical architecture development design idea, an electric vehicle electrical system is divided into a plurality of modules according to functional domains, the whole vehicle electrical system comprises three functional domains of intelligent control, power driving and energy management, and the intelligent control domain is integrated, so that the required functions of whole vehicle control, vehicle positioning, Bluetooth connection, data uploading, remote control, information display and the like can be realized simultaneously by using only one device, and the safety of the whole vehicle is effectively improved; the standardization of parts is realized through the distribution of the functions of each system, and the system has good expansibility and compatibility. As an optional implementation mode, the automobile internal part can be effectively prevented from being damaged or broken due to the high-voltage power supply problem through the dual power supply, the service life of the part can be prolonged, and the safety of the automobile can be further improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

In order to clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a block diagram of an electric system of an electric vehicle according to an embodiment of the present invention;

fig. 2 is a block diagram of a battery pack according to an embodiment of the present invention.

Detailed Description

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may include other steps or elements not expressly listed.

Referring to fig. 1, fig. 1 is a block diagram of an electric system of an electric vehicle according to an embodiment of the present invention.

Electric motor car electric system CAN include intelligent control domain, power drive domain and energy management domain, intelligent control domain, power drive domain and energy management domain communicate through the bus, bus communication mode CAN adopt 485 communication, also CAN adopt CAN communication, this all does not influence the realization of this application, intelligent control domain promptly, power drive domain and energy management domain accessible 485 bus communication or through controller area network communication, that is to say, each device in intelligent control domain 1, power drive domain 2 and the energy management domain 3 is the network node that possesses bus communication, as shown in fig. 1, the dotted line is the communication line.

In the application, the intelligent control domain can comprise an intelligent control module 1, and the intelligent control module 1 integrates functional modules for realizing vehicle control, vehicle positioning, data communication, remote operation and information display into a device. The vehicle control system can integrate vehicle body accessories such as a light switch 11 including a high beam, a low beam, a steering switch, etc., an acceleration rotating handle switch 12, a brake switch 13, etc., into the intelligent control module 1, and integrally control the vehicle body accessories through the intelligent control module 1, and drive loads such as light, a loudspeaker, etc., through a hard line, and output an acceleration signal and a brake signal to a motor controller 21 of a power driving domain through a bus, and a driving motor 22 accelerates or brakes the vehicle. The vehicle positioning can integrate a GPS (global positioning system) positioner into the intelligent control module 1 to realize a vehicle positioning function, the data communication can integrate devices for realizing data transmission communication such as wifi, Bluetooth and NFC into the intelligent control module 1 so as to enable a user and a vehicle-mounted terminal to carry out data communication and data transmission, in addition, a vehicle instrument and a display can be simultaneously integrated into the intelligent control module 1 so as to realize functions such as information display and remote operation, and the information display can display information such as vehicle state, vehicle speed and electric quantity.

The power driving domain comprises a motor controller 21 and a motor 22, wherein the motor controller 21 can be used for controlling the motor 22 to provide power output for the whole vehicle based on a driving bus signal output by the intelligent control domain. The motor controller 21 provides power output for the whole vehicle system, and communicates with the battery pack 32 and the intelligent control module 1 of the energy management domain 3 through a bus, and the real-time data such as the driving control management, the vehicle speed and the mileage of the real vehicle are displayed and transmitted.

In the embodiment of the present invention, the energy management domain 3 includes a charger 31 and a battery pack 32 for providing power for the whole vehicle. The charger 31 provides a charging power supply for the vehicle system, and communicates with the battery pack 32 and the intelligent control module 1 through a bus, so that the functions of vehicle charging control, charging process monitoring, charging protection control and the like are realized.

In the technical scheme provided by the embodiment of the utility model, based on the standardized electrical architecture development design thinking, divide electric motor car electrical system into a plurality of modules according to the functional domain, whole car electrical system includes three functional domains of intelligent control, power drive and energy management, integrates the intelligent control domain, only uses a device can realize simultaneously that whole car controls, vehicle location, bluetooth is connected, data upload, remote control, information display etc. required function, effectively promotes the security of whole car; the standardization of parts is realized through the distribution of the functions of each system, and the system has good expansibility and compatibility.

In the correlation technique, the battery of electric motor car all adopts parts such as instrument, well accuse, alarm to provide high voltage power supply and supplies power, awakens up work through key switch or a key starting switch or APP, and whole car passes through the mutual data of network signal. The voltage required by the working of the device is low, and the requirement on the working voltage range of a network communication chip is low, such as a 485 transceiver chip TP8485E, the working voltage range is 0.3V-7V, and the output voltage range of an AB line is-9V-14V; the working voltage range of the CAN transceiver chip TCAN 1042 is 4.5V-5.5V, and the overhigh supply voltage easily causes the high voltage damage of components on one hand and the fault of a communication circuit on the other hand. In view of this, in the present application, referring to fig. 2, a dotted line in fig. 2 shows a high-voltage power supply line, a solid line is a low-voltage power supply line, the battery pack provides two power supplies for the entire vehicle, one high-voltage power is used for driving the motor controller 21 and the motor 22, and one low-voltage power is used for supplying power to the low-voltage controllers such as the intelligent control module 1, and the following contents may be included:

the battery pack 32 may include a high voltage power supply module and a low voltage power supply module; the high-voltage power supply module is used for providing a high-voltage power supply for the power driving domain and the charger; the low-voltage power supply module is used for providing a low-voltage power supply for the intelligent control domain.

The battery pack 32 may include a battery cell module 321 and a power conversion module 322. The battery cell module 321 is a high-voltage power supply formed by connecting a plurality of lithium batteries in series and is used for outputting a high-voltage electric signal; for example, 23 lithium batteries are connected in series to serve as a high-voltage power supply. The power conversion module 322 is configured to convert the high-voltage electrical signal output by the cell module 321 into a low-voltage electrical signal according to a preset voltage conversion condition and output the low-voltage electrical signal. The preset voltage conversion condition may be determined according to the high-voltage electrical signal and the required low-voltage electrical signal, and the power conversion module 322 may adopt any electronic device capable of converting the high-voltage electrical signal into the required low-voltage electrical signal, which is not limited in this application. The battery cell module 321 may be configured to output a voltage signal of 48V, 60V, or 72V, and the high voltage power supply is a high voltage + and a high voltage-in fig. 2; the power conversion module 322 converts and outputs a 12V voltage signal through the high voltage power supply of the cell module 321, and the low voltage power supply is 12V + and 12V-in fig. 2. The battery pack 31 provides two paths of power supplies for the whole vehicle system, and is communicated with the intelligent control module 1, the charger 32 and the motor controller 21 through a bus; the charging control and protection are realized through signal interaction with the charger 32, and the charging safety of the vehicle is ensured; through signal interaction with the intelligent control module 1, electric quantity information display and battery data uploading to an enterprise background are realized, and real-time battery monitoring and control are realized; through signal interaction with the motor controller 21, energy management of vehicle discharge and energy recovery is realized, and vehicle discharge safety is ensured.

By last, the embodiment of the utility model provides a can effectually avoid the damage or the trouble that the car inner part leads to because of the high voltage power supply problem through dual power supply, not only can prolong the spare part life-span, still can further promote vehicle security.

As an optional implementation mode, in order to implement the technical scheme of the utility model more conveniently and simply, aiming at the functions of the intelligent control domain, the integrated design of the central control, the instrument and the alarm commonly used in the industry at present can be realized, and the functions required by the intelligent control domain, such as whole vehicle control, vehicle positioning, Bluetooth connection, data uploading, remote control, information display and the like, are realized; that is to say, the intelligent control module 1 can be generated by integrating a meter, an alarm and vehicle body accessories into a central control system, wherein the vehicle body accessories are any one or any combination of the following:

In some other embodiments of the present invention, the central control system may further integrate dual-mode Bluetooth to simultaneously support classic BT legacy Bluetooth such as Bluetooth 3.0 and BLE low power consumption Bluetooth such as Bluetooth 4.0; class BT is used for realizing incoming call reminding through a hands-free telephone protocol, and BLE is used as a data communication mode between a user intelligent terminal and a vehicle-mounted terminal.

In the embodiment, the central control unit collects a switching signal, an accelerating signal and a braking signal of the whole vehicle and drives electrical accessories such as lamplight, a loudspeaker, a barrel lock and the like to work; integrating functions of instrument display, a mobile communication module and the like, communicating with other control units of the vehicle through bus communication, communicating with an enterprise management platform through a 2G mobile wireless network, and displaying vehicle information through a liquid crystal screen; the functions of GPS positioning, vehicle real-time state reporting, remote program upgrading, parameter query, local data storage, low-power-consumption Bluetooth unlocking, short-distance vehicle control, mobile phone APP interconnection, vehicle electrical accessory control and the like are realized.

As another optional implementation manner, in order to improve vehicle security and ensure that a vehicle is not stolen, the intelligent control domain may further include an image acquisition device, and the intelligent control module may further be integrated with a functional module for implementing face recognition.

The image acquisition equipment is used for acquiring the face image of the driver seat, and the image acquisition equipment can comprise an infrared camera and a visible light camera which can rotate by 360 degrees. The intelligent control system comprises a pressure sensor, an intelligent control module 1 and a power driving domain, wherein the pressure sensor can be arranged in the driving position in advance, when a person is in the driving position, the pressure sensor can send a pressure signal to trigger image acquisition equipment to acquire images of the person in the driving position, and the acquired images are sent to the intelligent control module 1, and the intelligent control module 1 is further used for sending a forced locking signal to the power driving domain to prevent the motor from being successfully started and give an alarm if the face image of the driving position is detected not to be an authorized user. The face recognition technology can adopt any face recognition method, and the face image recognition process can adopt the face recognition implementation mode recorded in the related technology, and the details are not repeated here.

The utility model discloses some other embodiment, for simpler, conveniently control the vehicle, intelligent control module 1 is the functional module that still integrateed is used for realizing gesture recognition for generate corresponding control signal through the gesture in the image data that discernment image acquisition equipment sent, and send for the device that carries out the corresponding operation of control signal.

In this embodiment, a gesture-control signal database may be pre-constructed, in which each gesture corresponds to a unique control signal, for example, the gesture is a fist, and the corresponding control signal is a vehicle braking signal; the gesture is a forefinger pointing forwards, the corresponding control signal is a signal for starting a high beam, the gesture is a palm, the corresponding control signal is a signal for starting multimedia equipment to automatically play music and the like, the gesture is detected through an image recognition algorithm, and then the corresponding control signal is matched in a gesture-control signal database.

The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

It is right above the utility model provides an electric motor car electrical system introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. An electric system of an electric vehicle is characterized by comprising an intelligent control domain, a power driving domain and an energy management domain which are communicated through a bus;

2. An electric vehicle electrical system as in claim 1, wherein the battery pack comprises a high voltage power supply module and a low voltage power supply module;

3. The electric vehicle electrical system of claim 2, wherein the battery pack comprises a cell module and a power conversion module;

4. The electric vehicle electrical system of claim 3, wherein the cell module is configured to output a voltage signal of 48V, 60V, or 72V; the power supply conversion module is used for outputting a 12V voltage signal.

5. The electric vehicle electrical system of claim 4, wherein the intelligent control domain, the power drive domain, and the energy management domain communicate over a 485 bus or communicate over a controller area network.

6. The electric system of the electric vehicle as claimed in any one of claims 1 to 5, wherein the intelligent control module is generated by integrating a meter, an alarm and a vehicle body accessory into a central control system, and the vehicle body accessory is any one or any combination of the following:

7. The electric vehicle electrical system of claim 6, wherein the central control system further integrates dual-mode bluetooth to support both classic BT legacy bluetooth and BLE bluetooth low energy;

8. The electric vehicle system as claimed in any one of claims 1 to 5, wherein the intelligent control domain further comprises an image acquisition device, and the intelligent control module further integrates a functional module for realizing face recognition;

9. The electric vehicle system as claimed in claim 8, wherein the intelligent control module further integrates a function module for implementing gesture recognition, and is configured to generate a corresponding control signal by recognizing a gesture in the image data sent by the image capturing device, and send the control signal to a device for executing an operation corresponding to the control signal.

10. An electric vehicle electrical system as in claim 8, wherein the image capture device comprises an infrared camera and a visible light camera.