WO2017096650A1

WO2017096650A1 - Electrical system of mobile charging rescue vehicle and control method for electrical system

Info

Publication number: WO2017096650A1
Application number: PCT/CN2015/099133
Authority: WO
Inventors: 李先文; 余雪昆; 汪深
Original assignee: 湖南深拓智能设备股份有限公司
Priority date: 2015-12-07
Filing date: 2015-12-28
Publication date: 2017-06-15
Also published as: CN105437994A

Abstract

An electrical system of a mobile charging rescue vehicle, comprising a vehicle engine, a power takeoff, a chassis transmission system, a generator, a metering apparatus, a controller, a direct current charger, an alternating current charger, a cab operation display, a charger operation display, a GPS positioning module, a wireless communication module, a charging rescue platform and a rescue application (APP); also disclosed is a method for controlling the electrical system of the mobile charging rescue vehicle. By the eliminating an energy storage battery, the electrical system of the mobile charging rescue vehicle and the control method for the electrical system reduce the overall weight, energy consumption, have a low system cost, are economical, have no secondary pollution, have a short rescue time, a high charging efficiency and provide a good user experience.

Description

Mobile charging vehicle electrical system for rescue and control method thereof

Technical field

The invention belongs to the technical field of transportation, and particularly relates to a mobile charging vehicle electrical system for rescue and a control method thereof.

Background technique

With the increasing popularity of new energy pure electric vehicles, more and more pure electric vehicles will be on the road. However, the long charging time and short cruising range are defects that pure electric vehicles cannot avoid. Driving to the middle of the road exhausted, can not find the charging pile, will be the most embarrassing dilemma facing pure electric vehicles.

The market has therefore introduced a number of mobile charging vehicles for rescue, but these mobile charging vehicles are equipped with batteries as energy storage devices, but the battery life is short, must be replaced after a period of use, and the battery weight is very large, the transportation process The energy consumption is severe, the battery is recycled and disposed of with large pollution, and the price of the battery is also very expensive, resulting in high system cost. Many mobile charging vehicles provide AC power by inverting the rectified DC power into AC charging piles. The electric energy passes through: AC to DC, DC to AC conversion, and the loss is large and the efficiency is low. Moreover, the pure electric vehicle that is anchored can only passively wait for rescue after applying for rescue by telephone or network. The mobile charging car can only be rescued in isolation. The rescue time is too long, the rescue process is uncontrollable, and the user experience is very poor.

Summary of the invention

The technical problem to be solved by the present invention is to solve the above problems in the prior art, and to provide a mobile charging vehicle electrical system for rescue and a control method thereof, which can eliminate the energy storage battery, reduce the weight of the whole vehicle, and save energy consumption. Low system cost, good economy, no secondary pollution, short rescue time, high charging efficiency, open and transparent rescue process, users Experience is good.

The technical solution adopted by the invention is:

Mobile charging vehicle electrical system for rescue, including vehicle engine, power take-off, chassis transmission system, generator, metering device, controller, DC charger, AC charger, cab operation screen, charger operation panel , GPS positioning module, wireless communication module, charging rescue platform, rescue APP; the output shaft of the vehicle engine is connected to the generator input shaft or connected to the chassis transmission system through the power take-off, and the power output and metering device input of the generator The interface is connected, the output interface of the metering device is connected with the AC power input interface of the DC charger and the power input interface of the AC charger, and the output charging interface of the DC charger and the AC charger is connected to the charging input interface of the pure electric vehicle to charge the pure electric vehicle. The controller analog output interface is connected to the throttle control line of the vehicle engine, the pulse input interface of the controller is connected to the generator speed sensor, and a serial port of the controller is simultaneously connected with the metering device, the DC charger, the AC charger, and the CAN bus interface of the controller. Connect the cab operating panel and charger operation The other two controllers are connected to the serial GPS positioning module and the wireless communication module; a wireless communication module connected to the rescue platform by charging GPRS, rescue rescue APP via an Internet connection charge internet.

In the above technical solution, the GPRS includes but is not limited to WIFI, 3G, 4G.

An electric control method for a mobile charging vehicle for rescue, comprising:

1) Park the mobile charging car used for rescue in front of the rescued pure electric vehicle;

2) The power take-off is switched to the power take-off position;

3) The engine drives the generator to rotate;

4) The controller detects the generator speed;

5) The generator does not reach the rated speed, the controller increases the throttle, and the generator exceeds the rated Speed, the controller reduces the throttle;

6) The generator speed reaches the rated speed, and the AVR measures the generator output voltage;

7) The output voltage of the generator is lower than the rated voltage, the excitation of the AVR is increased, and the output voltage of the generator is higher than the rated voltage AVR to reduce the excitation;

8) The generator output voltage reaches the rated value and is stable;

9) output charging permission signal;

10) The user selects the DC charger to charge quickly, and the controller closes the DC fast charger contactor;

11) The user selects the AC charger to charge slowly, and the controller closes the AC slow charger contactor.

In the above technical solution, the electrical control method for the mobile charging vehicle for rescue is as follows:

1) Cut off the vehicle engine output main drive shaft, install the power take-off on the main drive shaft, the power take-off has two gear positions, namely: the power take-off and the travel gear; when the handle is switched to the travel gear, the vehicle engine The speed is output to the rear axle tire, and the vehicle runs normally; when the handle is switched to the power take-off position, the power take-off outputs the speed of the vehicle engine to the generator input shaft coaxially connected with the power take-off, and the vehicle enters the power generating working state;

2) The vehicle engine drives the generator input shaft to rotate through the power take-off, installs the speed measuring code disc on the generator input shaft, and installs the speed measuring sensor to detect the speed of the generator, and the speed sensor signal is connected to the pulse input port of the controller to control The device detects whether the generator speed reaches the rated speed, such as 1500 rpm, if not, the controller increases the analog output through the PID algorithm and increases the throttle; otherwise, if the controller detects that the generator speed exceeds the rated speed, the controller Reduce the analog output through the PID algorithm, reduce the throttle, and thus constant Constant generator speed;

3) After the generator speed is stable, that is, 1500 rpm ± 4%, the AVR module inside the generator will detect the output voltage, and increase the excitation when the output voltage does not reach the rated value. Otherwise, when the output voltage is too high, the excitation is reduced. Achieve the purpose of stabilizing the output power of the generator;

4) The three-phase AC 380V power supply from the generator is connected to the metering device. The metering device will measure the voltage, current, frequency and other related status data of the input power source, and measure the power consumption. The controller obtains the power status parameter through the serial port. And measuring electrical data;

5) When the controller detects that the power supply state is stable, such as 380V±5%, the controller will output a charging enable signal; if the user selects DC fast charging, the controller outputs a control signal to control the contactor to close, and the power supply of the metering device output is provided to The DC charger, the rectifier module in the DC charger first converts the input AC power into a DC power by rectification, and at the same time, the CPU in the DC charger obtains the battery and related data of the charged vehicle through the CAN bus, and then according to the model and the battery. The information is adjusted to the appropriate voltage and current through the secondary voltage regulation module to charge the electric vehicle; at the same time, the controller obtains the operation data of the DC charger through the serial port communication, and the key data including the charging current, the charging voltage and the battery temperature are checked;

6) If the user selects the AC charger, the controller outputs a control signal, the contactor is closed, the output of the metering device is connected to the power input interface of the AC charger, and the AC charger is used to charge the electric vehicle. The controller also communicates through the serial port. Obtaining relevant data such as current and voltage for AC charging process;

7) Set multiple operation screens to be placed next to the cab and the charger, display the working parameters of each module of the system on the operation screen, and set each module of the button control system to run, so that both the driver and the user can see at the same time. The working state of the system, and give instructions to the system to achieve two or more operations;

8) Configure the GPS positioning module, the GPS positioning module acquires the satellite signal, converts it into latitude and longitude information, and transmits the latitude and longitude data to the controller through the serial port communication; also configures the wireless communication module, and the controller connects the wireless communication module through the serial port to the above vehicle Status, GPS location information, charging current, voltage, power and vehicle information are sent to the rescue platform, and the rescue process is known through the rescue APP;

9) The driver of the pure electric vehicle can install the rescue APP and use the one-button rescue function of the rescue APP. At this time, the rescue APP passes the rescue information and the location information through GPRS, and the GPRS includes but is not limited to 3G, 4G, WIFI, and sends To the rescue platform, after receiving the rescue information, the rescue platform passes the GPRS, and the GPRS includes but is not limited to 3G, 4G, WIFI, and sends it to the controller to guide the rescue vehicle to rescue in time.

Beneficial effects:

The invention solves the dilemma of the lack of electricity in the half-way of the pure electric vehicle, realizes the charging and rescue of the pure electric vehicle through the mobile charging rescue, and solves the worries of the pure electric vehicle.

The invention abandons the energy storage battery, directly generates electricity through the generator, and charges the new energy vehicle through the DC or AC charger, reduces the weight of the whole vehicle, reduces the energy loss, reduces the system cost, and the economy is guaranteed, and at the same time Diesel and natural gas dual energy sources can be used, and environmental protection is also guaranteed. Moreover, since the energy storage battery is eliminated, there is no problem of recovery and it does not cause secondary pollution. There is also no frequent replacement of components due to battery life issues.

The invention adopts a parking power take-off device to take power from the chassis engine, thereby generating power and driving a common power source, eliminating the engine in the diesel generator set, reducing the overall quality of the system, and reducing the system while reducing energy consumption. Cost and economy are guaranteed.

Because some new energy vehicles only have AC charging interfaces, the DC charging interfaces and protocols of some new energy vehicles are not unified. Therefore, in order to ensure the efficiency of this mobile charging car And versatility, the system is equipped with DC fast charger and AC slow charger, the efficiency and versatility are unified.

The invention adopts the generator power source to be directly connected to the AC charger, and the efficiency is very high, and the energy loss is greatly reduced.

The invention is equipped with a GPS positioning system, so that the current position of the charging car can be known in real time, and the accident vehicle can be found very conveniently by navigation, and the rescue time is shortened.

The invention is configured with a wireless data transmission system, and can transmit vehicle state, vehicle position, vehicle trajectory, and related data of charging voltage, current, electric quantity and the like to the charging platform. And through the rescue APP for query and display. Therefore, the accident vehicle driver and the charging vehicle management platform can supervise and view the whole process of charging and rescue in a very detailed manner, so that the rescue process is open and transparent, and the user can clearly understand the consumption, and can also conveniently track the rescue process.

DRAWINGS

Figure 1 is a block diagram of the system of the present invention.

detailed description

Referring to FIG. 1, a mobile charging vehicle electrical system for rescue includes a vehicle engine, a power take-off, a chassis transmission system, a generator, a metering device, a controller, a DC charger, an AC charger, and a cab. Operation screen, charger operation screen, GPS positioning module, wireless communication module, charging rescue platform, rescue APP; the output shaft of the vehicle engine is connected to the generator input shaft or connected to the chassis transmission system through the power take-off, the generator The power output is connected to the input interface of the metering device, and the output interface of the metering device is connected with the AC power input interface of the DC charger and the power input interface of the AC charger, and the charging interface of the DC charger and the AC charger is connected to the charging input of the pure electric vehicle. Connect The port is charged for the pure electric vehicle; the analog output interface of the controller is connected to the throttle control line of the vehicle engine, the pulse input interface of the controller is connected to the generator speed sensor, and a serial port of the controller is simultaneously connected with the metering device, the DC charger, and the AC charger. The controller's CAN bus interface is connected to the cab operation screen and the charger operation screen. The other two serial ports of the controller are respectively connected to the GPS positioning module and the wireless communication module; the wireless communication module is connected to the charging and rescue platform via GPRS, and the rescue APP is connected through the Internet. Charging rescue platform.

The above GPRS includes but is not limited to WIFI, 3G, 4G.

2) The power take-off is switched to the power take-off position;

3) The engine drives the generator to rotate;

4) The controller detects the generator speed;

5) The generator does not reach the rated speed, the controller increases the throttle, the generator exceeds the rated speed, and the controller reduces the throttle;

8) The generator output voltage reaches the rated value and is stable;

9) output charging permission signal;

In the above technical solution, the specific method for the electrical control method of the mobile charging vehicle for rescue is as follows:

2) The vehicle engine drives the generator input shaft to rotate through the power take-off, installs the speed measuring code disc on the generator input shaft, and installs the speed measuring sensor to detect the speed of the generator, and the speed sensor signal is connected to the pulse input port of the controller to control The device detects whether the generator speed reaches the rated speed, such as 1500 rpm, if not, the controller increases the analog output through the PID algorithm and increases the throttle; otherwise, if the controller detects that the generator speed exceeds the rated speed, the controller Reduce the analog output by the PID algorithm, reduce the throttle, and thus the constant generator speed;

5) When the controller detects that the power supply state is stable, such as 380V±5%, the controller will output a charging enable signal; if the user selects DC fast charging, the controller outputs a control signal to control the contactor to close, and the power supply of the metering device output is provided to DC charger, DC charger The rectifier module first converts the input AC power source into DC power by rectification, and at the same time, the CPU in the DC charger obtains the battery and related data of the charged vehicle through the CAN bus, and then passes through the secondary voltage regulation module according to the model and battery information. Adjust the voltage and current to charge the electric vehicle; at the same time, the controller obtains the running data of the DC charger through serial communication, including key data such as charging current, charging voltage and battery temperature;

8) Configure the GPS positioning module, the GPS positioning module acquires the satellite signal, converts it into latitude and longitude information, and transmits the latitude and longitude data to the controller through the serial port communication; also configures the wireless communication module, and the controller connects the wireless communication module through the serial port to the above vehicle state GPS location information, charging current, voltage, power and vehicle information are sent to the rescue platform, and the rescue process is known through the rescue APP;

Claims

A mobile charging vehicle electrical system for rescue, comprising: an onboard engine, a power take-off, a chassis transmission system, a generator, a metering device, a controller, a DC charger, an AC charger, a cab operation screen, Charger operation screen, GPS positioning module, wireless communication module, charging rescue platform, rescue APP; the output shaft of the vehicle engine is connected to the generator input shaft or connected to the chassis transmission system through the power take-off, and the power output of the generator The input interface of the metering device is connected with the AC power input interface of the DC charger and the power input interface of the AC charger, and the output charging interface of the DC charger and the AC charger is connected to the charging input interface of the pure electric vehicle. Pure electric vehicle charging; controller analog output interface is connected to the throttle control line of the vehicle engine, the pulse input interface of the controller is connected to the generator speed sensor, and a serial port of the controller is simultaneously connected with the metering device, the DC charger, the AC charger, the controller CAN bus interface to connect the cab operation panel Further charger two serial operation screen, the controller respectively connected GPS positioning module and a wireless communication module; a wireless communication module connected to the rescue platform by charging GPRS, rescue rescue APP via an Internet connection charge internet.
The mobile charging vehicle electrical system for rescue according to claim 1, wherein the GPRS includes, but is not limited to, WIFI, 3G, 4G.
An electric control method for a mobile charging vehicle for rescue, characterized in that it comprises:

1) Park the mobile charging car for rescue in front of the rescued pure electric steam vehicle;

2) The power take-off is switched to the power take-off position;

3) The engine drives the generator to rotate;

4) The controller detects the generator speed;

5) The generator does not reach the rated speed, the controller increases the throttle, the generator exceeds the rated speed, and the controller reduces the throttle;

6) The generator speed reaches the rated speed, and the AVR measures the generator output voltage;

7) The output voltage of the generator is lower than the rated voltage, the excitation of the AVR is increased, and the output voltage of the generator is higher than the rated voltage AVR to reduce the excitation;

8) The generator output voltage reaches the rated value and is stable;

9) output charging permission signal;

10) The user selects the DC charger to charge quickly, and the controller closes the DC fast charger contactor;

11) The user selects the AC charger to charge slowly, and the controller closes the AC slow charger contactor.
The mobile charging vehicle electrical control method for rescue according to claim 3, wherein the specific method is as follows:

1) Cut off the vehicle engine output main drive shaft, install the power take-off on the main drive shaft, the power take-off has two gear positions, namely: the power take-off and the travel gear; when the handle is switched to the travel gear, the vehicle engine The speed is output to the rear axle tire, and the vehicle runs normally; when the handle is switched to the power take-off position, the power take-off outputs the speed of the vehicle engine to the generator input shaft coaxially connected with the power take-off, and the vehicle enters the power generating working state;

2) The vehicle engine drives the generator input shaft to rotate through the power take-off, installs the speed measuring code disc on the generator input shaft, and installs the speed measuring sensor to detect the speed of the generator, and the speed sensor signal is connected to the pulse input port of the controller to control The device detects whether the generator speed reaches the rated speed, such as 1500 rpm, if not, the controller increases the analog output through the PID algorithm, and increases the throttle; otherwise, if the controller detects the generator speed exceeds the amount When the speed is fixed, the controller reduces the analog output through the PID algorithm, reduces the throttle, and thus the constant generator speed;

3) After the generator speed is stable, that is, 1500 rpm ± 4%, the AVR module inside the generator will detect the output voltage, and increase the excitation when the output voltage does not reach the rated value. Otherwise, when the output voltage is too high, the excitation is reduced. Achieve the purpose of stabilizing the output power of the generator;

4) The three-phase AC 380V power supply from the generator is connected to the metering device. The metering device will measure the voltage, current and frequency related state data of the input power source, and measure the power consumption. The controller obtains the power state parameter through the serial port and Measuring electrical data;

5) When the controller detects that the power supply state is stable, such as 380V±5%, the controller will output a charging enable signal; if the user selects DC fast charging, the controller outputs a control signal to control the contactor to close, and the power supply of the metering device output is provided to The DC charger, the rectifier module in the DC charger first converts the input AC power into a DC power by rectification, and at the same time, the CPU in the DC charger obtains the battery and related data of the charged vehicle through the CAN bus, and then according to the model and the battery. The information is adjusted to the appropriate voltage and current through the secondary voltage regulation module to charge the electric vehicle; at the same time, the controller obtains the operation data of the DC charger through the serial port communication, including the charging current, the charging voltage, and the battery temperature key data are checked;

6) If the user selects the AC charger, the controller outputs a control signal, the contactor is closed, the output of the metering device is connected to the power input interface of the AC charger, and the AC charger is used to charge the electric vehicle. The controller also communicates through the serial port. Obtaining relevant data such as current and voltage for AC charging process;

7) Set multiple operation screens to be placed next to the cab and the charger, display the working parameters of each module of the system on the operation screen, and set each module of the button control system to run, so that both the driver and the user can see at the same time. The working state of the system and under the system Direct instructions to achieve two or more operations;

8) Configure the GPS positioning module, the GPS positioning module acquires the satellite signal, converts it into latitude and longitude information, and transmits the latitude and longitude data to the controller through the serial port communication; also configures the wireless communication module, and the controller connects the wireless communication module through the serial port to the above vehicle Status, GPS location information, charging current, voltage, power and vehicle information are sent to the rescue platform, and the rescue process is known through the rescue APP;

9) The driver of the pure electric vehicle can install the rescue APP and use the one-button rescue function of the rescue APP. At this time, the rescue APP passes the rescue information and the location information through GPRS, and the GPRS includes but is not limited to 3G, 4G, WIFI, and sends To the rescue platform, after receiving the rescue information, the rescue platform passes the GPRS, and the GPRS includes but is not limited to 3G, 4G, WIFI, and sends it to the controller to guide the rescue vehicle to rescue in time.