阅读说明：本技术 一种新能源汽车的充电方法及计算机可读存储介质 (Charging method of new energy automobile and computer readable storage medium ) 是由 祖梦静 刘乾 吴尧尧 李梁 陈嘉伟 宋艳红 于 2020-05-10 设计创作，主要内容包括：本发明提出一种新能源汽车的充电方法及计算机可读存储介质,该方案将家用充电桩与新能源汽车之间建立关联,设置身份识别机制,使得新能源汽车的车载网联终端tbox能够识别所关联的家用充电桩,并在识别出家用充电桩后,采用智能模式进行充电。在智能模式下,tbox根据当前电池电量、当地电价信息、出行时间及预期充电量为用户计算出最佳的充电方案,在可能的情况下,尽量为用户节省充电成本。(The invention provides a charging method of a new energy automobile and a computer readable storage medium. In the intelligent mode, the tbox calculates an optimal charging scheme for the user according to the current battery power, the local electricity price information, the trip time and the expected charging amount, and saves the charging cost for the user as much as possible.)

1. A charging method of a new energy automobile is characterized by comprising the following steps:

(1) establishing association between the household charging pile and the new energy automobile, and setting an identity recognition mechanism to enable a vehicle-mounted internet connection terminal tbox of the new energy automobile to recognize the associated household charging pile;

(2) before charging, identifying the charging pile, and if the charging pile is not a household charging pile, immediately starting charging after inserting a charging gun until a battery is fully charged or the charging gun is pulled out; if the household charging pile is used, the vehicle-mounted internet terminal tbox opens an intelligent charging mode, and the following steps are executed:

(2-1) detecting the residual electric quantity of the vehicle-mounted battery in real time, and estimating the time length a required by constant current charging to the expected charging amount according to the output current of the charging pile according to the current residual electric quantity of the vehicle-mounted battery; calculating a time length b available for charging according to the travel time set by the user and the current time;

(2-2) generating a charging strategy according to a and b:

if a is larger than b or a is larger than b, charging is started immediately when a charging gun is inserted, the electric quantity of the vehicle-mounted battery is detected in real time in the charging process, and charging is finished when the charging gun is pulled out or the electric quantity of the vehicle-mounted battery reaches the expected charging quantity;

if a is less than b, the vehicle-mounted internet terminal tbox is connected with the internet to capture local electricity price information, if time-of-use electricity price is not adopted, charging is started immediately when a charging gun is inserted until the electric quantity of the vehicle-mounted battery reaches the expected charging quantity; if the time-of-use electricity price is adopted, judging whether the time from the current time T to the time T + b is a single electricity price or not, if so, inserting a charging gun and immediately starting charging until the electric quantity of the vehicle-mounted battery reaches the expected charging quantity; if not, aiming at minimizing the charging cost for enabling the electric quantity of the vehicle-mounted battery to reach the expected charging amount, a charging cost calculation model is constructed, an optimal charging scheme is calculated, the optimal charging scheme is executed, the actual charging time a for enabling the electric quantity of the vehicle-mounted battery to reach the expected charging amount when the optimal charging scheme is executed is recorded, and the calculation formula of a is corrected by a.

2. The charging method for the new energy vehicle according to claim 1, wherein if the vehicle network connection terminal tbox fails to connect to the internet to obtain the local electricity price information in the step (2), the charging is directly started until the charging time is a or the charging gun is unplugged.

3. The charging method of the new energy automobile according to claim 1, wherein the calculation process of the charging cost calculation model in the step (2-2) is deployed at a cloud end, the vehicle-mounted internet terminal tbox interacts with the cloud end, when the charging start time and the charging end time corresponding to the case that a is less than b in the intelligent charging mode need to be calculated, the numerical values of a and b are uploaded to the cloud end, the cloud end calculates the optimal charging start time and charging end time according to the charging cost calculation model, and then feeds back the calculation result to the vehicle-mounted internet terminal tbox; and the vehicle-mounted internet terminal tbox executes a corresponding charging strategy to finish the charging process.

4. A computer-readable storage medium storing at least one instruction executable by a processor, the at least one instruction, when executed by the processor, implementing the charging method according to any one of claims 1 to 3.

Technical Field

The invention relates to the technical field of new energy automobile charging, in particular to a charging method of a new energy automobile and a computer readable storage medium.

Background

The charging technology is very critical to the development of the electric automobile industry, and the charging technology applied in the current market mainly comprises direct current charging, alternating current charging, battery replacement technology, wireless charging and solar panel charging, wherein the alternating current charging and the direct current charging technology are the most mature and have the highest popularity.

The alternating current charging generally refers to a mode that single-phase or three-phase alternating current is converted into direct current with proper voltage after being rectified, filtered and corrected by a charger in a vehicle, and then is used for charging a power battery, belongs to a slow charging mode, is mainly applied to household charging piles and partial public charging piles, and is characterized in that the charging time is long, generally needs 5-8 hours, and can reach 30 hours at most. This method is suitable for charging for a long vehicle off time (mostly at night).

The direct current charging is a mode of converting alternating current of a power grid into a direct current power supply and directly charging a power battery through a charging device, generally the current is 150 plus 250A, belongs to quick charging and is applied to most urban public charging facilities and charging stations in inter-city high-speed service areas.

However, the charging mode applied in the current market, no matter ac charging or dc charging, is to start charging immediately after inserting a charging gun, a user cannot set an expected charging amount and a charging stop time, and to stop charging to a certain amount of electricity (a state of not full), the user must look at the gun all the time, otherwise, quick charging will stop until pulling out the charging gun or automatically charging to full, and if the battery is slowly charged after being fully charged, if the battery is not powered off, a discharging-recharging-discharging-recharging process will occur, and if the charging function of the battery is often rapidly attenuated.

Disclosure of Invention

The purpose of the invention is as follows: in order to make up for the defects of the prior art, the invention provides a household intelligent charging scheme for a new energy automobile, which can calculate an optimal charging scheme for a user according to the current battery capacity, the local electricity price information, the trip time and the expected charging amount when the new energy automobile is charged through a household charging pile, and can save the charging cost for the user as much as possible.

The technical scheme is as follows: in order to achieve the technical effects, the technical scheme provided by the invention is as follows:

a charging method of a new energy automobile comprises the following steps:

(1) establishing association between the household charging pile and the new energy automobile, and setting an identity recognition mechanism to enable a vehicle-mounted internet connection terminal tbox of the new energy automobile to recognize the associated household charging pile;

(2) before charging, identifying the charging pile, and if the charging pile is not a household charging pile, immediately starting charging after inserting a charging gun until a battery is fully charged or the charging gun is pulled out; if the household charging pile is used, the vehicle-mounted internet terminal tbox opens an intelligent charging mode, and the following steps are executed:

(2-1) detecting the residual electric quantity of the vehicle-mounted battery in real time, and estimating the time length a required by constant current charging to the expected charging amount according to the output current of the charging pile according to the current residual electric quantity of the vehicle-mounted battery; calculating a time length b available for charging according to the travel time set by the user and the current time;

(2-2) generating a charging strategy according to a and b:

if a is larger than b or a is larger than b, charging is started immediately when a charging gun is inserted, the electric quantity of the vehicle-mounted battery is detected in real time in the charging process, and charging is finished when the charging gun is pulled out or the electric quantity of the vehicle-mounted battery reaches the expected charging quantity;

if a is less than b, the vehicle-mounted internet terminal tbox is connected with the internet to capture local electricity price information, if time-of-use electricity price is not adopted, charging is started immediately when a charging gun is inserted until the electric quantity of the vehicle-mounted battery reaches the expected charging quantity; if the time-of-use electricity price is adopted, judging whether the time from the current time T to the time T + b is a single electricity price or not, if so, inserting a charging gun and immediately starting charging until the electric quantity of the vehicle-mounted battery reaches the expected charging quantity; if not, aiming at minimizing the charging cost for enabling the electric quantity of the vehicle-mounted battery to reach the expected charging amount, a charging cost calculation model is constructed, an optimal charging scheme is calculated, the optimal charging scheme is executed, the actual charging time a for enabling the electric quantity of the vehicle-mounted battery to reach the expected charging amount when the optimal charging scheme is executed is recorded, and the calculation formula of a is corrected by a.

Further, if the vehicle-mounted network terminal tbox fails to connect with the internet to acquire the local electricity price information in the step (2), charging is directly started until the charging time is a or the charging gun is pulled out.

Further, the charging method of the new energy automobile further comprises the following steps: deploying the calculation process of the charging cost calculation model in the step (2-2) at a cloud end, enabling the vehicle-mounted networking terminal tbox to interact with the cloud end, uploading the values of a and b to the cloud end when the charging start time and the charging end time corresponding to the condition that a is less than b in the intelligent charging mode need to be calculated, calculating the optimal charging start time and charging end time by the cloud end according to the charging cost calculation model, and feeding back the calculation result to the vehicle-mounted networking terminal tbox; and the vehicle-mounted internet terminal tbox executes a corresponding charging strategy to finish the charging process.

A computer-readable storage medium storing at least one instruction executable by a processor, wherein the at least one instruction, when executed by the processor, implements the charging method for a new energy vehicle.

Has the advantages that: compared with the prior art, the invention has the following advantages:

1. the user can set for anticipated charge volume and charge stop time in a flexible way, can rush to the appointed electric quantity according to the user's demand, can avoid appearing more that can not the auto-power-off and appear and charge and discharge repeatedly and lead to the phenomenon of the quick decay of electric power storage function after the battery is fully charged.

2. When the new energy automobile is charged through the household charging pile, an optimal charging scheme is calculated for a user according to the current battery electric quantity, the local electricity price information, the trip time and the expected charging amount, and the charging cost is saved for the user as much as possible.

Drawings

Fig. 1 is an exemplary flowchart of a charging method for a new energy vehicle according to an embodiment of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments. It is to be understood that the present invention may be embodied in various forms, and that there is no intention to limit the invention to the specific embodiments illustrated, but on the contrary, the intention is to cover some exemplary and non-limiting embodiments shown in the attached drawings and described below.

It is to be understood that the features listed above for the different embodiments may be combined with each other to form further embodiments within the scope of the invention, where technically feasible. Furthermore, the particular examples and embodiments of the invention described are non-limiting, and various modifications may be made in the structure, steps, and sequence set forth above without departing from the scope of the invention.

Fig. 1 shows an embodiment of the charging method of the present invention, which includes the following steps:

firstly, identifying the intelligent charging pile at home.

The new energy automobile has two charging ports of fast charging and slow charging, fast charging corresponds to the public charging pile, slow charging corresponds to the common household charging pile and the household charging pile (belonging to the public charging pile) of part adding platform, therefore, whether the household charging pile is the household charging pile of the user is needed to be judged, an identity recognition mechanism is needed to be passed, and the household charging pile associated can be recognized by the vehicle-mounted internet connection terminal tbox of the new energy automobile. In this embodiment, we implement the identification of the home charging pile in the following manner:

the Tbox CAN automatically acquire a CAN message and judge whether a charging gun is connected or not through the CAN message;

2. after the charging gun is judged to be connected, whether the charging current is direct current or alternating current is judged by analyzing the CAN message, and then whether the connected charging port is fast charging or slow charging is judged, if the charging port is direct current, the connected charging port is judged to be fast charging, and the charging pile CAN be directly judged to be a commercial charging pile; at the moment, the constant-current charging in the quick charging mode is directly started until the charging is fully charged or the charging gun is pulled out;

3. if the charging current is found to be alternating current by analyzing the CAN message, the charging interface CAN be determined to be a slow charging interface, and the charging pile CAN be a household charging pile or a part of household charging piles (public charging piles) added to the platform. The position of the automobile is located according to the GPS information (the user needs to set the GPS information of the home charging pile in advance), so that whether the automobile is the home charging pile or the public charging pile is judged (if the location of the automobile is consistent with the set GPS information of the charging pile, the automobile is the home charging pile, and otherwise, the automobile is the commercial charging pile).

4. And when the household charging pile is determined, judging whether a network exists, if the network does not exist, directly starting slow charging constant current charging, and after the charging gun is pulled out, finishing charging. Under the condition of having a network, after inserting the charging gun, the Tbox CAN automatically start an intelligent charging mode, at the moment, the Tbox CAN directly analyze and obtain the percentage of the residual electric quantity of the battery and the electric quantity of the battery through a CAN message, the required charging time a (the charging current is constant and is determined by the battery model) CAN be obtained according to the current electric quantity of the battery and the expected charging amount set by a user, the time b which CAN be used for charging CAN be calculated according to the travel time and the current moment, and the local electricity price information CAN be captured according to the GPS information. When a is larger than b or a is larger than b, charging is started immediately after a charging gun is inserted, and after the travel time b is reached, if a user does not actively pull out the charging gun, the charging is continued to the expected electric quantity; when a is less than b, if the time-of-use electricity price is not adopted locally, charging is started immediately after the charging gun is inserted until the expected electric quantity is charged or the charging gun is pulled out by a user; if the time-of-use electricity price is adopted, judging whether the time from the current time T to the time T + b is a single electricity price or not, if so, immediately starting charging after inserting a charging gun until the charging is carried out to the expected electric quantity or the user pulls out the charging gun; if not, aiming at minimizing the charging cost, and taking the total charging time length less than or equal to b as a constraint condition, constructing a charging cost calculation model, calculating the charging starting time and the charging ending time of each electricity price stage, then executing a corresponding charging strategy, and recording the actual time a of charging to the expected electric quantity when executing, wherein the a is used for correcting a calculation formula of a, and the correction mode comprises but is not limited to numerical value fitting and deep learning.

Preferably, if the charging mode saves the charging cost for the user, after the user starts the vehicle again, the server can also automatically push the charging condition for the vehicle machine and relevant prompts for saving the cost.

As a preferred embodiment of the invention, a calculation process of a charging cost calculation model is deployed at a cloud end, a vehicle-mounted networking terminal tbox interacts with the cloud end, when the charging starting time and the charging ending time corresponding to the condition that a is less than b in an intelligent charging mode need to be calculated, the numerical values of a and b are uploaded to the cloud end, the cloud end calculates the optimal charging starting time and charging ending time according to the charging cost calculation model, and then the calculation result is fed back to the vehicle-mounted networking terminal tbox of the vehicle-mounted networking terminal tbox to execute a corresponding charging strategy, so that the charging process is completed.

Since the calculation time of the smart charging mode is actually the approximate time of calculation (it cannot be very accurate due to vehicle differences and regional differences), a calculation model of the charging duration a is deployed in the cloud. Through charging data many times and analyzing, can roughly know the vehicle and fill xx% electricity and need probably how long time, and then know local charge efficiency and peak-valley time interval, the long model of charging can be calculated according to the data of charging many times to the high in the clouds, uses when supplying Tbox to carry out intelligent charging once more and calculate, and the data of newly producing can continue to be used for optimizing the model at the high in the clouds, and the data volume is big more, and the computational model can tend to the accuracy more.

Preferably, the embodiment also provides a computer-readable storage medium, where the computer-readable storage medium stores at least one instruction executable by a processor, and the at least one instruction, when executed by the processor, implements the charging method for the new energy vehicle.

The above-described embodiments, particularly any "preferred" embodiments, are possible examples of implementations, and are presented merely for a clear understanding of the principles of the invention. Many variations and modifications may be made to the above-described embodiments without departing substantially from the spirit and principles of the technology described herein, and such variations and modifications are to be considered within the scope of the invention.