阅读说明：本技术 充电控制方法、装置和车辆 (Charging control method and device and vehicle ) 是由 谢木生 陈金峰 易靖宇 于 2021-09-01 设计创作，主要内容包括：本发明提供一种充电控制方法、装置和车辆,其中方法包括：获取电动车在当前充电桩处的当前剩余电量、当前装载量,以及所述当前充电桩与下一充电桩之间的行驶里程和坡道信息；基于所述当前装载量、所述当前充电桩与下一充电桩之间的行驶里程和坡道信息,以及所述电动车的单位里程基准耗电量,确定所述电动车从所述当前充电桩行驶至所述下一充电桩的预测耗电量；基于所述当前剩余电量,以及所述预测耗电量,确定所述电动车在所述当前充电桩的充电量。本发明提供的方法、装置和车辆,提高了电动车充电判断的准确性,避免了电动车陷入电量耗尽的风险,提高了用户的使用体验。(The invention provides a charging control method, a charging control device and a vehicle, wherein the method comprises the following steps: acquiring current residual electric quantity and current loading capacity of the electric vehicle at a current charging pile, and driving mileage and ramp information between the current charging pile and a next charging pile; determining a predicted power consumption of the electric vehicle for traveling from the current charging pile to a next charging pile based on the current loading capacity, the traveled distance between the current charging pile and the next charging pile and the ramp information, and the unit-mileage reference power consumption of the electric vehicle; and determining the charging amount of the electric vehicle in the current charging pile based on the current residual capacity and the predicted power consumption. The method, the device and the vehicle provided by the invention improve the accuracy of electric vehicle charging judgment, avoid the risk of electric vehicle running into electric quantity exhaustion and improve the use experience of users.)

1. A charge control method, comprising:

acquiring current residual electric quantity and current loading capacity of the electric vehicle at a current charging pile, and driving mileage and ramp information between the current charging pile and a next charging pile;

determining a predicted power consumption of the electric vehicle for traveling from the current charging pile to a next charging pile based on the current loading capacity, the traveled distance between the current charging pile and the next charging pile and the ramp information, and the unit-mileage reference power consumption of the electric vehicle;

and determining the charging amount of the electric vehicle in the current charging pile based on the current residual capacity and the predicted power consumption.

2. The charge control method according to claim 1, wherein the determining the predicted amount of power consumed by the electric vehicle to travel from the current charging pile to a next charging pile based on the current load, the mileage and hill information between the current charging pile and the next charging pile, and the mileage reference power consumption of the electric vehicle comprises:

determining a load correction factor based on the current load and a rated load of the electric vehicle;

determining a ramp correction coefficient based on ramp information between the current charging pile and the next charging pile;

determining the predicted power consumption of the electric vehicle per unit mileage between the current charging pile and the next charging pile based on the loading correction coefficient and the slope correction coefficient and the benchmark power consumption per unit mileage of the electric vehicle;

and determining the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile based on the driving mileage and the unit mileage predicted power consumption.

3. The charge control method according to claim 2, wherein the predicted electric power consumption per unit mileage of the electric vehicle between the current charging pile and the next charging pile is determined based on the following formula:

EC_adjust＝EC*PerLoad*P

in the formula, EC _ adjust is a unit mileage predicted power consumption amount, EC is a unit mileage reference power consumption amount, PerLoad is a load correction coefficient, and P is a slope correction coefficient.

4. The charging control method according to claim 2, wherein the determining a hill correction factor based on the hill information between the current charging pile and the next charging pile comprises:

determining the length and gradient of each ramp between the current charging pile and the next charging pile based on the ramp information between the current charging pile and the next charging pile;

and determining a slope correction coefficient between the current charging pile and the next charging pile based on the length and the gradient of each slope.

5. The charging control method according to claim 4, wherein the determining a hill correction factor between the current charging pile and the next charging pile based on the length and the gradient of each hill comprises:

if the slope between the current charging pile and the next charging pile only comprises an ascending slope, the slope correction coefficient is determined based on the following formula:

if the slope between the current charging pile and the next charging pile only comprises a descending slope, the slope correction coefficient is determined based on the following formula:

if the slope between the current charging pile and the next charging pile comprises an ascending slope and a descending slope, the slope correction coefficient is determined based on the following formula:

in the formula, P is a ramp correction coefficient, k is the number of ramps between the current charging pile and the next charging pile, and LS is_iFor the length of the ith uphill road, JS_iFor the slope of the ith uphill slope, m is the amount of downhill slopes between the current charging pile and the next charging pile, LX_jLength of jth downhill path, JX_jIs the slope of the jth downhill slope.

6. The charge control method according to any one of claims 1 to 5, wherein the reference electric power consumption per unit mileage of the electric vehicle is determined based on:

acquiring the driving mileage and the power consumption of any one vehicle of the same type of the electric vehicle in each charge-discharge period;

determining a unit mileage reference power consumption amount of any one vehicle of the same type based on a driving mileage and a power consumption amount of the any one vehicle of the same type in each charge-discharge cycle;

and determining the unit-mileage reference power consumption of the electric vehicle based on the unit-mileage reference power consumption of a plurality of vehicles of the same type.

7. The charge control method according to any one of claims 1 to 5, wherein the mileage and the slope information between the current charging pile and the next charging pile are determined based on the steps of:

acquiring the driving mileage and the ramp information of a working path of the electric vehicle and the position of each charging pile in the working path;

dividing the operation path based on the position of each charging pile, and determining the driving mileage and the ramp information among the charging piles;

and determining the mileage and the ramp information between the current charging pile and the next charging pile based on the mileage and ramp information between the charging piles.

8. The charge control method according to any one of claims 1 to 5, wherein the determining the charge amount of the electric vehicle at the current charging pole based on the current remaining power amount and the predicted power consumption amount comprises:

and if the difference between the current residual capacity and the predicted power consumption is larger than the safe electric quantity of the electric vehicle, determining that the charging quantity of the electric vehicle in the current charging pile is zero.

9. The charge control method according to any one of claims 1 to 5, wherein the determining the charge amount of the electric vehicle at the current charging pole, thereafter comprises:

if the charging amount of the electric vehicle in the current charging pile is zero, sending a charging-unnecessary prompt;

and if the electric vehicle is in the state that the charging amount of the current charging pile is not zero, a charging prompt is sent.

10. A charge control device, characterized by comprising:

the charging system comprises an acquisition unit, a charging unit and a charging unit, wherein the acquisition unit is used for acquiring the current residual electric quantity and the current loading capacity of the electric vehicle at the current charging pile, and the driving mileage and the ramp information between the current charging pile and the next charging pile;

a prediction unit configured to determine a predicted power consumption of the electric vehicle traveling from the current charging pile to a next charging pile based on the current load, the traveled distance between the current charging pile and the next charging pile, and the ramp information, and a unit-mileage reference power consumption of the electric vehicle;

and the charging unit is used for determining the charging amount of the electric vehicle in the current charging pile based on the current residual capacity and the predicted power consumption.

11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the charge control method according to any one of claims 1 to 9 are implemented when the processor executes the program.

12. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the charge control method according to any one of claims 1 to 9.

13. A vehicle comprising a memory, and a computer program stored on the memory and operable on the controller, the controller implementing the steps of the charge control method of any one of claims 1 to 9 when executing the program; or comprising a charge control device according to claim 10.

Technical Field

The invention relates to the technical field of mechanical engineering, in particular to a charging control method, a charging control device and a vehicle.

Background

With the enhancement of energy-saving and environment-friendly consciousness and the improvement of battery driving technology, more and more vehicles or operation machines adopt batteries as power sources, and zero emission is realized. Electric trucks are one such. Due to the limitation of the battery capacity, the endurance mileage of the electric truck is short, and therefore the electric truck needs to travel to the nearest charging pile for charging before the electric quantity is exhausted, and the construction operation task can be completed.

In the prior art, the charging reminding is sent before the electric quantity of the battery of the electric truck is exhausted, if the residual electric quantity is not enough to enable the electric truck to drive to the nearest charging pile from the current position, the electric truck is trapped in a predicament and needs to wait for rescue, and the use experience of a user is seriously influenced. In addition, the electric energy consumption of the electric truck is influenced by a plurality of factors such as road conditions, when the electric truck needs to be charged, the electric truck is judged by a driver according to experience, judgment errors exist, and the accuracy is poor.

Disclosure of Invention

The invention provides a charging control method, a charging control device and a vehicle, which are used for solving the technical problems of judgment error and poor accuracy caused by the fact that the charging control of an electric vehicle in the prior art is judged by a driver according to experience.

The invention provides a charging control method, which comprises the following steps:

acquiring current residual electric quantity and current loading capacity of the electric vehicle at a current charging pile, and driving mileage and ramp information between the current charging pile and a next charging pile;

determining a predicted power consumption of the electric vehicle for traveling from the current charging pile to a next charging pile based on the current loading capacity, the traveled distance between the current charging pile and the next charging pile and the ramp information, and the unit-mileage reference power consumption of the electric vehicle;

and determining the charging amount of the electric vehicle in the current charging pile based on the current residual capacity and the predicted power consumption.

According to the charging control method provided by the invention, the determining the predicted power consumption of the electric vehicle for driving from the current charging pile to the next charging pile based on the current loading capacity, the driving distance and the ramp information between the current charging pile and the next charging pile and the unit mileage reference power consumption of the electric vehicle comprises the following steps:

determining a load correction factor based on the current load and a rated load of the electric vehicle;

determining a ramp correction coefficient based on ramp information between the current charging pile and the next charging pile;

determining the predicted power consumption of the electric vehicle per unit mileage between the current charging pile and the next charging pile based on the loading correction coefficient and the slope correction coefficient and the benchmark power consumption per unit mileage of the electric vehicle;

and determining the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile based on the driving mileage and the unit mileage predicted power consumption.

According to the charging control method provided by the invention, the determining of the slope correction coefficient based on the slope information between the current charging pile and the next charging pile comprises the following steps:

determining the length and gradient of each ramp between the current charging pile and the next charging pile based on the ramp information between the current charging pile and the next charging pile;

and determining a slope correction coefficient between the current charging pile and the next charging pile based on the length and the gradient of each slope.

According to the charging control method provided by the invention, the unit mileage reference power consumption of the electric vehicle is determined based on the following steps:

acquiring the driving mileage and the power consumption of any one vehicle of the same type of the electric vehicle in each charge-discharge period;

determining a unit mileage reference power consumption amount of any one vehicle of the same type based on a driving mileage and a power consumption amount of the any one vehicle of the same type in each charge-discharge cycle;

and determining the unit-mileage reference power consumption of the electric vehicle based on the unit-mileage reference power consumption of a plurality of vehicles of the same type.

According to the charging control method provided by the invention, the driving mileage and the ramp information between the current charging pile and the next charging pile are determined based on the following steps:

acquiring the driving mileage and the ramp information of a working path of the electric vehicle and the position of each charging pile in the working path;

dividing the operation path based on the position of each charging pile, and determining the driving mileage and the ramp information among the charging piles;

and determining the mileage and the ramp information between the current charging pile and the next charging pile based on the mileage and ramp information between the charging piles.

According to the charging control method provided by the invention, the determining the charging amount of the electric vehicle in the current charging pile based on the current remaining power amount and the predicted power consumption amount comprises the following steps:

and if the difference between the current residual capacity and the predicted power consumption is larger than the safe electric quantity of the electric vehicle, determining that the charging quantity of the electric vehicle in the current charging pile is zero.

According to the charging control method provided by the invention, the determining the charging amount of the electric vehicle in the current charging pile comprises the following steps:

if the charging amount of the electric vehicle in the current charging pile is zero, sending a charging-unnecessary prompt;

and if the electric vehicle is in the state that the charging amount of the current charging pile is not zero, a charging prompt is sent.

According to the charging control method provided by the invention, the predicted power consumption of the electric vehicle per unit mileage between the current charging pile and the next charging pile is determined based on the following formula:

EC_adjust＝EC*PerLoad*P

in the formula, EC _ adjust is a unit mileage predicted power consumption amount, EC is a unit mileage reference power consumption amount, PerLoad is a load correction coefficient, and P is a slope correction coefficient.

According to the charging control method provided by the invention, the determining of the slope correction coefficient between the current charging pile and the next charging pile based on the length and the gradient of each slope comprises the following steps:

if the slope between the current charging pile and the next charging pile only comprises an ascending slope, the slope correction coefficient is determined based on the following formula:

if the slope between the current charging pile and the next charging pile only comprises a descending slope, the slope correction coefficient is determined based on the following formula:

if the slope between the current charging pile and the next charging pile comprises an ascending slope and a descending slope, the slope correction coefficient is determined based on the following formula:

in the formula, P is a ramp correction coefficient, k is the number of ramps between the current charging pile and the next charging pile, and LS is_iFor the length of the ith uphill road, JS_iFor the slope of the ith uphill slope, m is the amount of downhill slopes between the current charging pile and the next charging pile, LX_jLength of jth downhill path, JX_jIs the slope of the jth downhill slope.

The present invention provides a charge control device, including:

the charging system comprises an acquisition unit, a charging unit and a charging unit, wherein the acquisition unit is used for acquiring the current residual electric quantity and the current loading capacity of the electric vehicle at the current charging pile, and the driving mileage and the ramp information between the current charging pile and the next charging pile;

a prediction unit configured to determine a predicted power consumption of the electric vehicle traveling from the current charging pile to a next charging pile based on the current load, the traveled distance between the current charging pile and the next charging pile, and the ramp information, and a unit-mileage reference power consumption of the electric vehicle;

and the charging unit is used for determining the charging amount of the electric vehicle in the current charging pile based on the current residual capacity and the predicted power consumption.

The invention provides an electronic device, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of the charging control method when executing the program.

The present invention provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the charging control method.

The invention provides a vehicle, comprising a memory and a computer program which is stored on the memory and can run on a controller, wherein the controller realizes the steps of the charging control method when executing the program; or comprises the charge control device.

According to the charging control method, the device and the vehicle provided by the invention, the unit mileage reference power consumption of the electric vehicle is corrected by acquiring the current loading capacity of the electric vehicle, the driving mileage between the current charging pile and the next charging pile and the ramp information, the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile is further determined, the charging quantity of the electric vehicle in the current charging pile is further determined according to the current remaining power quantity of the electric vehicle, the actual power consumption of the electric vehicle and the charging quantity at the current charging pile can be accurately predicted and obtained by considering the influences of complex environmental factors such as terrain, carrying weight and the like, a driver does not need to judge according to experience, the accuracy of electric vehicle charging judgment is improved, whether the electric vehicle is charged or not and the charging quantity can be reasonably planned and prompted in a driving path, and the risk that the electric vehicle runs into power consumption is avoided, the use experience of the user is improved.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be 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 some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flow chart of a charging control method according to the present invention;

FIG. 2 is a schematic diagram of a method for calculating a benchmark power consumption amount per mileage according to the present invention;

FIG. 3 is a schematic diagram of path partitioning provided by the present invention;

fig. 4 is a schematic structural diagram of a charging control device according to the present invention;

fig. 5 is a schematic structural diagram of an electronic device provided in the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A user driving an electric vehicle to perform each work task, such as transporting construction materials, desires to be driven fully. However, the power consumption of the electric vehicle is affected by many factors, and it cannot be guaranteed that the electric vehicle reaches the next place to be charged before the current power is used up.

Fig. 1 is a schematic flow chart of a charging control method provided by the present invention, as shown in fig. 1, the method includes:

and step 110, acquiring the current residual capacity and the current loading capacity of the electric vehicle at the current charging pile, and the driving mileage and the ramp information between the current charging pile and the next charging pile.

Specifically, the electric vehicle in the embodiment of the present invention may be a freight vehicle driven by a power battery, and may also be a passenger vehicle driven by a power battery. The current remaining power is the remaining power of the power Battery in the electric vehicle at the present time, and can be obtained by a Battery Management System (BMS) of the electric vehicle. The current loading capacity is the actual loading capacity of the electric vehicle or the number of passengers at the current moment.

The charging pile is a device that can provide a charging service for the electric vehicle. Fill electric pile setting on the route of traveling of electric motor car. The driving path of the electric vehicle can be divided into a plurality of driving intervals according to the position of the charging pile. The starting point and the end point of each driving section are positions where the charging piles are located. Correspondingly, when the electric motor car carries out the operation, just transport the goods that will load or passenger from the present electric pile that fills to next electric pile, transport from next electric pile that fills to next electric pile again, until the terminal point of route of traveling.

The driving mileage between the current charging pile and the next charging pile can be measured by taking kilometers as units. The ramp information between the current charging pile and the next charging pile can comprise ramp type, length, gradient and other information. The ramp type includes an up ramp and a down ramp, and the length is the distance between the starting point of the ramp and the end point of the ramp. The slope is the included angle between ramp and the horizontal plane.

The mileage and the ramp information between the current charging pile and the next charging pile can be acquired through an electronic map, and the electronic map can be pre-stored in a memory of the electric vehicle and also can be acquired from a remote server in real time in a networking mode. The electronic map may be obtained by measurement in advance. For example, if the electric vehicle is an electric truck traveling in a construction area, the terrain of the construction area may be mapped, and the geographic position of the charging pile in the construction area may be marked to obtain an electronic map.

And step 120, determining the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile based on the current loading capacity, the traveling distance and the ramp information between the current charging pile and the next charging pile and the unit mileage reference power consumption of the electric vehicle.

Specifically, the predicted power consumption is a predicted value of the actual power consumption needed in the process that the electric vehicle travels from the current charging pile to the next charging pile.

The unit mileage reference power consumption is the power consumption of the electric vehicle which is averagely driven for one unit mileage under the comprehensive working condition, for example, the unit mileage reference power consumption can be the power consumption which is driven for 1 kilometer, and the unit is kw/km (kilowatt/kilometer). The unit mileage reference power consumption can be obtained by calculating the traveling mileage data of the electric vehicle in a plurality of charging and discharging periods, and the comprehensive working conditions comprise all the working conditions of the electric vehicle.

The unit mileage reference power consumption represents the average power consumption condition of the electric vehicle under the comprehensive road condition. In the actual transportation process, the unit mileage benchmark power consumption is used for calculating the predicted power consumption inaccurately under the influence of complex environmental factors such as terrain, carrying weight and the like.

For example, the amount of power consumed per unit of mileage when the electric vehicle is fully loaded is larger than the amount of power consumed per unit of mileage when the electric vehicle is unloaded, and the larger the current load amount is, the more power is consumed by the electric vehicle. For another example, in a driving route between the current charging pile and the next charging pile, the more the uphill mileage is, the larger the gradient is, the more the electric vehicle needs to work against gravity, and the more the consumed electric quantity is; the more the downhill mileage is, the larger the gradient is, the more the electric vehicle can do work by gravity, and the less the consumed electric quantity is.

Therefore, the unit mileage reference power consumption can be corrected according to the current loading capacity and the ramp information between the current charging pile and the next charging pile, and the predicted value of the unit mileage actual power consumption of the electric vehicle between the current charging pile and the next charging pile is obtained. The influence of the actual loading capacity and the actual terrain of the electric vehicle is considered by the predicted value, the predicted value has high reliability, and the predicted power consumption of the electric vehicle running from the current charging pile to the next charging pile can be calculated. For example, the predicted power consumption amount may be a product of a predicted value of the actual power consumption amount per unit mileage and the mileage traveled.

And step 130, determining the charging amount of the electric vehicle in the current charging pile based on the current residual power and the predicted power consumption.

Specifically, based on the current remaining amount of the electric vehicle and the predicted power consumption amount, it may be determined whether the electric vehicle needs to be charged, and a specific charge amount.

For example, if the predicted power consumption is greater than the current remaining power, it indicates that the electric vehicle may transport the loaded goods or passengers to the next charging pile before the current remaining power is exhausted, and then the electric vehicle may not be used in the current charging pile for charging. The system can prompt the user that charging is not needed based on the purpose of saving transportation time. If the predicted power consumption is less than the current remaining power, it indicates that the electric vehicle cannot transport the loaded goods or passengers to the next charging pile before the current remaining power is exhausted, and the electric vehicle must be charged in the current charging pile, and the charging quantity can be determined according to the difference between the current remaining power and the predicted power consumption. At which point the system must prompt the user for a charge, and a specific amount of charge. If the predicted power consumption is equal to the current remaining power, the electric vehicle is indicated to have a risk of power exhaustion in the process of transporting loaded goods or passengers to the next charging pile, and at the moment, the system must prompt a user to have a risk and recommend charging.

According to the charging control method provided by the embodiment of the invention, the reference power consumption of the unit mileage of the electric vehicle is corrected by acquiring the current loading capacity of the electric vehicle, the driving mileage between the current charging pile and the next charging pile and the ramp information, so that the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile is determined, and the charging quantity of the electric vehicle in the current charging pile is determined according to the current remaining power of the electric vehicle, because the influences of complex environmental factors such as terrain, carrying weight and the like are considered, the actual power consumption of the electric vehicle and the charging quantity at the current charging pile can be accurately predicted, a driver does not need to judge according to experience, the accuracy of electric vehicle charging judgment is improved, whether the electric vehicle is charged or not and the charging quantity can be reasonably planned and prompted in a driving path, and the risk that the electric vehicle runs into electric quantity is avoided, the use experience of the user is improved.

Based on the above embodiment, step 120 includes:

determining a loading correction factor based on the current loading capacity and the rated loading capacity of the electric vehicle;

determining a ramp correction coefficient based on ramp information between the current charging pile and the next charging pile;

determining unit-mileage predicted power consumption of the electric vehicle between the current charging pile and the next charging pile based on the loading correction coefficient and the ramp correction coefficient and unit-mileage reference power consumption of the electric vehicle;

and determining the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile based on the driving mileage and the unit mileage predicted power consumption.

Specifically, the load correction coefficient is used to correct the unit mileage reference power consumption amount according to the current load amount. The larger the loading correction coefficient is, the more work the electric vehicle needs to do, and the larger the influence of the current loading capacity on the unit mileage reference power consumption is. The load correction factor may be determined based on the current load and a rated load of the electric vehicle. The rated loading capacity is the maximum allowable loading capacity of the electric vehicle. For example, the ratio of the current load amount to the rated load amount may be used as the load correction factor. For another example, the loading correction factor may be set to three low, medium, and high, quantized with 0.8, 1, and 1.1, respectively. When the current load capacity is between no load and 30% of the rated load capacity, the load correction coefficient is low, and the value is 0.8; when the current load capacity is between 30% and 90% of the rated load capacity, the load correction coefficient is a middle gear, and the value is 1; when the current load capacity is between 90% of the rated load capacity and full load, the load correction coefficient is high, and the value is 1.1.

The slope correction coefficient is used for correcting the unit mileage reference power consumption amount according to the slope information. The hill correction factor may be an uphill ratio, a downhill ratio, or an uphill-downhill ratio in the travel path. The uphill ratio may be a ratio of a length of an uphill slope in a total length of the travel path, the downhill ratio may be a ratio of a length of a downhill slope in the total length of the travel path, and the uphill/downhill ratio value may be a ratio of the length of the uphill slope to the length of the downhill slope. When the slope correction coefficient is an uphill proportion or an uphill-downhill proportion, the larger the slope correction coefficient is, the more the work of the electric vehicle required to overcome gravity on the corresponding driving path is, and the larger the influence of the driving path on the unit mileage reference power consumption is. The driving path here is a path between the current charging pile and the next charging pile.

And correcting the unit-mileage reference power consumption of the electric vehicle according to the loading correction coefficient and the ramp correction coefficient, and determining the unit-mileage predicted power consumption of the electric vehicle between the current charging pile and the next charging pile. The predicted electric power consumption of the unit mileage is a predicted value of the actual electric power consumption of the unit mileage when the electric vehicle runs. For example, the predicted power consumption per mileage may be a product of the reference power consumption per mileage, the loading correction coefficient, and the hill correction coefficient.

According to the power consumption predicted by the driving mileage and the unit mileage, the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile can be determined. For example, the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile may be a product of the mileage between the current charging pile and the next charging pile and the predicted power consumption per mileage.

Based on any one of the embodiments, the predicted power consumption of the electric vehicle in unit mileage between the current charging pile and the next charging pile is determined based on the following formula:

EC_adjust＝EC*PerLoad*P

in the formula, EC _ adjust is a unit mileage predicted power consumption amount, EC is a unit mileage reference power consumption amount, PerLoad is a load correction coefficient, and P is a slope correction coefficient.

Based on any one of the above embodiments, determining a hill correction coefficient based on the hill information between the current charging pile and the next charging pile includes:

determining the length and the gradient of each ramp between the current charging pile and the next charging pile based on the ramp information between the current charging pile and the next charging pile;

and determining a slope correction coefficient between the current charging pile and the next charging pile based on the length and the gradient of each slope.

Specifically, the length and the gradient of each ramp between the current charging pile and the next charging pile can be determined according to the ramp information between the current charging pile and the next charging pile.

And then calculating a slope correction coefficient between the current charging pile and the next charging pile according to the length and the gradient of each slope. The hill correction factor is determined based on the product of the length of each uphill slope and the corresponding slope and the product of the length of each downhill slope and the corresponding slope.

Based on any one of the above embodiments, determining a hill correction coefficient between the current charging pile and the next charging pile based on the length and the gradient of each hill includes:

if the ramp between the current charging pile and the next charging pile only comprises an ascending ramp, the ramp correction coefficient is determined based on the following formula:

if the ramp between the current charging pile and the next charging pile only comprises a descending ramp, the ramp correction coefficient is determined based on the following formula:

if the ramp between the current charging pile and the next charging pile comprises an ascending ramp and a descending ramp, the ramp correction coefficient is determined based on the following formula:

in the formula, P is a ramp correction coefficient, k is the number of ramps on the current charging pile and the next charging pile, m is the number of ramps on the current charging pile and the next charging pile, and LS is the number of ramps on the current charging pile and the next charging pile_iFor the length of the ith uphill road, JS_iIs the slope of the ith uphill slope, LX_jLength of jth downhill path, JX_jIs the slope of the jth downhill slope.

Specifically, if the ramp between the current charging pile and the next charging pile only comprises an ascending ramp, the ramp correction coefficient is positively correlated with the average gradient of the ascending ramp, and the larger the average gradient is, the more work the electric vehicle needs to do to overcome gravity on the corresponding driving path is, and the larger the ramp correction coefficient is.

If the ramp between the current charging pile and the next charging pile only comprises a descending ramp, the ramp correction coefficient is negatively related to the average gradient of the descending ramp, the larger the average gradient is, the more the electric vehicle works by utilizing gravity on the corresponding driving path, and the smaller the ramp correction coefficient is.

And if the ramp between the current charging pile and the next charging pile comprises an ascending ramp and a descending ramp, determining according to the length and the gradient between the ascending ramp and the descending ramp.

Based on any embodiment, the electric vehicle has the unit mileage reference electric power consumption determined based on the following steps:

acquiring the driving mileage and the power consumption of any one vehicle of the same type of the electric vehicle in each charge-discharge period;

determining unit mileage reference power consumption of any vehicle of the same type based on the driving mileage and the power consumption of any vehicle of the same type in each charge-discharge period;

and determining the unit-mileage reference power consumption of the electric vehicle based on the unit-mileage reference power consumption of a plurality of vehicles of the same type.

Specifically, the same type of vehicle is an electric vehicle of the same model as the electric vehicle. The unit-mileage reference power consumption of the electric vehicle can be determined according to the unit-mileage reference power consumption of the same type of vehicle of the electric vehicle.

Fig. 2 is a schematic diagram of the method for calculating the benchmark power consumption per unit mileage provided by the invention, as shown in fig. 2, firstly, power consumption data of a plurality of vehicles of the same type are obtained, and the power consumption data includes the driving mileage and the power consumption of each vehicle of the same type in each charging and discharging period; the charge and discharge cycle is a cycle in which the electric vehicle is charged with electric energy once and the electric energy is released for traveling and working. Secondly, for each vehicle of the same type, determining unit mileage reference power consumption of any vehicle of the same type according to the driving mileage and power consumption of the vehicle of the same type in each charging and discharging period; the unit mileage reference power consumption amount may be a quotient of the power consumption amount and the mileage. And finally, averaging the unit-mileage benchmark power consumption of all vehicles of the same type to obtain the unit-mileage benchmark power consumption of the electric vehicle.

Based on any of the above embodiments, the mileage and the slope information between the current charging pile and the next charging pile are determined based on the following steps:

acquiring the driving mileage and the ramp information of a working path of the electric vehicle and the position of each charging pile in the working path;

dividing the operation path based on the position of each charging pile, and determining the driving mileage and the ramp information among the charging piles;

and determining the mileage and the ramp information between the current charging pile and the next charging pile based on the mileage and the ramp information between the charging piles.

Specifically, the work path is a path that the electric vehicle needs to travel to complete the entire work task. The driving mileage and the ramp information of the operation path of the electric vehicle and the position of each charging pile in the operation path can be obtained in advance through the electronic map.

And dividing the operation path according to the position of each charging pile, and determining the driving mileage and the ramp information among the charging piles. And determining the mileage and the ramp information between the current charging pile and the next charging pile according to the mileage and the ramp information between the charging piles.

Based on any of the above embodiments, step 130 includes:

and if the difference between the current residual capacity and the predicted power consumption is larger than the safe electric quantity of the electric vehicle, determining that the charging quantity of the electric vehicle in the current charging pile is zero.

Specifically, the safe electric power of the electric vehicle is an electric power used by the electric vehicle to perform an emergency call or an emergency operation. When the electric quantity of a power battery of the electric vehicle is reduced to the safe electric quantity, the electric vehicle stops running and carries out operations such as emergency rescue calling.

The safe electric quantity can be determined according to the specific type of the electric vehicle, and the embodiment of the invention is not particularly limited. For example, for an electric mixer truck, a certain safe electric quantity needs to be set for maintaining the rotation of the mixing drum, so that concrete in the mixing drum is prevented from being condensed, and equipment damage is avoided.

If the difference between the current residual capacity and the predicted power consumption is larger than the safe electric quantity of the electric vehicle, it is indicated that the electric vehicle can transport the loaded goods or passengers to the next charging pile without charging in the current charging pile, and correspondingly, the charging quantity of the electric vehicle in the current charging pile is zero.

Based on any of the above embodiments, step 130 is followed by:

if the charging amount of the electric vehicle in the current charging pile is zero, sending a charging-unnecessary prompt;

if the charging amount of the electric vehicle in the current charging pile is not zero, a charging prompt is sent.

Specifically, if the electric motor car is zero at the current charge volume of filling electric pile, in order to practice thrift the transit time this moment, can send and need not to charge the suggestion. If the charging amount of the electric vehicle in the current charging pile is not zero, a charging prompt is sent to remind a user that the charging is needed to complete the transportation task.

Based on any one of the embodiments, an embodiment of the present invention provides a method for prompting charging by combining a load, map information, and a current electric quantity, including:

1. determining the load impact coefficient (Perload)

Calculating Perload according to the loading condition of the electric automobile, obtaining L, M and H three modes of three conditions through the loading capacity, and respectively aiming at low loading capacity-approaching no-load below 30%, loading capacity-loading half and high loading capacity-approaching full load above 90%; the energy consumption coefficient corresponding to L is 0.8 (calibration value), the energy consumption coefficient corresponding to M is 1, and the energy consumption coefficient corresponding to H is 1.1.

2. Determining the specific energy consumption value EC (energy Consumption)

Historical electric energy consumption data of a large number of vehicles of the same type are obtained from the cloud platform, and the historical electric energy consumption data comprise the driving mileage and the electric consumption of each vehicle of the same type in each charging and discharging period. And obtaining the unit energy consumption value EC of the electric automobile after averaging the unit energy consumption values of all vehicles of the same type according to the historical electric energy consumption data.

This is only a historical statistical regression data, which can be used as an energy consumption reference, so that a correction is also needed according to the loading capacity condition and the vehicle driving path condition.

3. Determining a hill correction factor P

And (3) inputting the destination point A to the destination point B in the precision digital map from the mileage information of the vehicle, calculating the uphill proportion and the downhill proportion under the path, and extracting the charging pile information under the path.

If a plurality of charging piles are arranged under the AB point path, each large path is divided into small paths, and the up-down slope occupation ratio under each path is calculated. Fig. 3 is a schematic diagram of path division provided by the present invention, as shown in fig. 3, a starting point is point a, an end point is point B, if there are multiple charging piles, each path is divided into point a to charging pile 1, charging piles 1 and 2, charging pile n-1 and charging pile n; and respectively calculating the uphill/downhill point ratio condition of each section of the path.

The hill correction coefficient P is [ (uphill mileage + uphill gradient)/(downhill mileage + downhill gradient) ], and since there are uphill and downhill slopes and a flat land in a single mileage, it is difficult to obtain P as 1. If P >1 indicates more uphill slopes and P <1 indicates more downhill slopes, the energy consumption value is corrected in real time through the data.

4. Charging is prompted

And obtaining a corrected unit energy consumption value (EC _ adjust), which is specifically represented by the following formula:

EC_adjust＝EC*PerLoad*P

the P value needs to be obtained through specific data and algorithm correction, and the driving mileage is calculated as follows:

for example, the current electric quantity E is 280kwh, and the current electric quantity is calculated by SOC (State of Charge); the current energy consumption is 2 kw/kilometer, the current loading coefficient is M, the slope correction coefficient P, the distance between the starting point A and the charging pile is 100 kilometers, and the correction coefficient P obtained by the ratio of the uphill slope to the downhill slope is 1.5, so that the approximately driving distance can be calculated as Long:

Longth＝E/(EC*PerLoad*P)＝280/(2*1*1.5)＝93.33km

also if the load is now low or empty, then:

Longth＝E/(EC*PerLoad*P)＝280/(2*0.8*1.5)＝116.7km

therefore, after loading, according to the quantity of goods M, the meter reminds that the position of the nearest charging pile 1 cannot be reached, and reminds a driver that a small loading quantity is needed if the driver continues to follow the path.

In the example, if the position of the charging pile 1 cannot be reached, the charging is needed, and at this time, the number of the electric energy to be charged can be calculated according to the electric energy needed for reaching the next charging pile. If the position of the charging pile 1 can be reached, the charging can be stopped, thereby saving the time required for charging.

Based on any of the above embodiments, fig. 4 is a schematic structural diagram of a charging control device provided by the present invention, as shown in fig. 4, the device includes:

the acquiring unit 410 is configured to acquire a current remaining power and a current loading capacity of the electric vehicle at the current charging pile, and driving mileage and ramp information between the current charging pile and a next charging pile;

a prediction unit 420 for determining a predicted power consumption of the electric vehicle from the current charging pile to the next charging pile based on the current load, the traveled distance between the current charging pile and the next charging pile and the ramp information, and the unit-mileage reference power consumption of the electric vehicle;

and a charging unit 430 for determining a charging amount of the electric vehicle in the current charging pile based on the current remaining capacity and the predicted power consumption.

The charging control device provided by the embodiment of the invention corrects the unit mileage reference power consumption of the electric vehicle by acquiring the current loading capacity of the electric vehicle, the driving mileage between the current charging pile and the next charging pile and the ramp information, further determines the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile, and determines the charging amount of the electric vehicle in the current charging pile according to the current remaining power of the electric vehicle, can accurately predict the actual power consumption of the electric vehicle and the charging amount at the current charging pile due to the consideration of the influences of complex environmental factors such as terrain, carrying weight and the like, does not need a driver to judge according to experience, improves the accuracy of electric vehicle charging judgment, can reasonably plan and prompt whether the electric vehicle is charged and the charging amount in a driving path, and avoids the risk that the electric vehicle runs into electric quantity, the use experience of the user is improved.

Based on any of the above embodiments, the prediction unit comprises:

a load correction subunit for determining a load correction factor based on the current load and a rated load of the electric vehicle;

the slope correction subunit is used for determining a slope correction coefficient based on the slope information between the current charging pile and the next charging pile;

the unit power consumption predicting subunit is used for determining the unit mileage predicted power consumption of the electric vehicle between the current charging pile and the next charging pile based on the loading correction coefficient and the ramp correction coefficient and the unit mileage reference power consumption of the electric vehicle;

and the power consumption predicting subunit is used for predicting the power consumption based on the driving mileage and the unit mileage and determining the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile.

Based on any embodiment above, the ramp modification subunit is configured to:

determining the length and the gradient of each ramp between the current charging pile and the next charging pile based on the ramp information between the current charging pile and the next charging pile;

and determining a slope correction coefficient between the current charging pile and the next charging pile based on the length and the gradient of each slope.

Based on any embodiment above, still include:

the unit mileage reference power consumption determining unit is used for acquiring the driving mileage and the power consumption of any one of the same type of vehicles of the electric vehicle in each charging and discharging period; determining unit mileage reference power consumption of any vehicle of the same type based on the driving mileage and the power consumption of any vehicle of the same type in each charge-discharge period; and determining the unit-mileage reference power consumption of the electric vehicle based on the unit-mileage reference power consumption of a plurality of vehicles of the same type.

Based on any embodiment above, still include:

the route dividing unit is used for acquiring the driving mileage and the ramp information of the operation route of the electric vehicle and the positions of the charging piles in the operation route; dividing the operation path based on the position of each charging pile, and determining the driving mileage and the ramp information among the charging piles; and determining the mileage and the ramp information between the current charging pile and the next charging pile based on the mileage and the ramp information between the charging piles.

Based on any of the embodiments above, the charging unit is configured to:

and if the difference between the current residual capacity and the predicted power consumption is larger than the safe electric quantity of the electric vehicle, determining that the charging quantity of the electric vehicle in the current charging pile is zero.

Based on any embodiment above, still include:

the prompting unit is used for sending a charging-unnecessary prompt if the charging amount of the electric vehicle in the current charging pile is zero; if the charging amount of the electric vehicle in the current charging pile is not zero, a charging prompt is sent.

Based on any one of the embodiments, the embodiment of the invention provides a vehicle, which includes a memory and a computer program stored in the memory and capable of running on a controller, wherein the controller implements the charging control method when executing the computer program; or comprises the charging control device.

Based on any of the above embodiments, fig. 5 is a schematic structural diagram of an electronic device provided by the present invention, and as shown in fig. 5, the electronic device may include: a Processor (Processor)510, a communication Interface (Communications Interface)520, a Memory (Memory)530, and a communication Bus (Communications Bus)540, wherein the Processor 510, the communication Interface 520, and the Memory 530 communicate with each other via the communication Bus 540. Processor 510 may call logical commands in memory 530 to perform the following method:

acquiring the current residual electric quantity and the current loading capacity of the electric vehicle at the current charging pile, and the driving mileage and the ramp information between the current charging pile and the next charging pile; determining the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile based on the current loading capacity, the driving distance and the ramp information between the current charging pile and the next charging pile and the unit mileage reference power consumption of the electric vehicle; and determining the charging amount of the electric vehicle in the current charging pile based on the current residual capacity and the predicted power consumption.

In addition, the logic commands in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic commands are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of commands for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The processor in the electronic device provided in the embodiment of the present invention may call a logic instruction in the memory to implement the method, and the specific implementation manner of the method is consistent with the implementation manner of the method, and the same beneficial effects may be achieved, which is not described herein again.

Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided in the foregoing embodiments when executed by a processor, and the method includes:

acquiring the current residual electric quantity and the current loading capacity of the electric vehicle at the current charging pile, and the driving mileage and the ramp information between the current charging pile and the next charging pile; determining the predicted power consumption of the electric vehicle from the current charging pile to the next charging pile based on the current loading capacity, the driving distance and the ramp information between the current charging pile and the next charging pile and the unit mileage reference power consumption of the electric vehicle; and determining the charging amount of the electric vehicle in the current charging pile based on the current residual capacity and the predicted power consumption.

When the computer program stored on the non-transitory computer readable storage medium provided in the embodiments of the present invention is executed, the method is implemented, and the specific implementation manner of the method is consistent with the implementation manner of the method, and the same beneficial effects can be achieved, which is not described herein again.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes commands for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.