阅读说明：本技术 车辆充电方法、装置、车辆及充电桩 (Vehicle charging method and device, vehicle and charging pile ) 是由 程琰 于 2018-08-30 设计创作，主要内容包括：本公开涉及一种车辆充电方法、装置、车辆及充电桩,从预设信号线上获取预设电压信号；在获取到预设电压信号时,通过预设信号线将目标车辆识别号码以脉冲宽度调制信号的形式发送至充电桩,目标车辆识别号码为待充电的车辆的车辆识别号码；从预设信号线上获取预设脉冲宽度调制信号；在获取到预设脉冲宽度调制信号时,将预设信号线与预设确认电路导通,以使充电桩对待充电的车辆进行充电。这样,就能够在车辆需要充电时,只要插入充电枪,就能自动向充电桩提供能够确认车辆身份的信息,从而免去了充电过程中刷卡的步骤,简化了车辆充电过程,更加方便了电动车辆的使用。(The disclosure relates to a vehicle charging method, a vehicle charging device, a vehicle and a charging pile, wherein a preset voltage signal is obtained from a preset signal line; when a preset voltage signal is acquired, sending a target vehicle identification number to a charging pile in the form of a pulse width modulation signal through a preset signal line, wherein the target vehicle identification number is the vehicle identification number of a vehicle to be charged; acquiring a preset pulse width modulation signal from a preset signal line; and when the preset pulse width modulation signal is acquired, the preset signal line is conducted with the preset confirmation circuit, so that the charging pile charges the vehicle to be charged. Like this, just can be when the vehicle need charge, as long as insert the rifle that charges, just can provide the information that can confirm the vehicle identity to filling electric pile automatically to remove the step of punching the card in the charging process from, simplified the vehicle charging process, made things convenient for electric vehicle's use more.)

1. A method of charging a vehicle, applied to a vehicle, the method comprising:

acquiring a preset voltage signal from a preset signal line;

when the preset voltage signal is obtained, sending a target vehicle identification number to the charging pile in the form of a pulse width modulation signal through the preset signal line, wherein the target vehicle identification number is the vehicle identification number of the vehicle to be charged;

acquiring a preset pulse width modulation signal from the preset signal line;

and when the preset pulse width modulation signal is acquired, the preset signal line is conducted with a preset confirmation circuit, so that the charging pile charges the vehicle to be charged.

2. The method of claim 1, wherein prior to said obtaining a preset pulse width modulated signal from said preset signal line, said method further comprises:

judging whether the target vehicle identification number is sent completely;

and when the target vehicle identification number is judged to be completely transmitted, executing the step of acquiring a preset pulse width modulation signal from the preset signal line.

3. The method of claim 1, wherein the pulse width modulated signal characterizing the target vehicle identification number comprises: a signal start section, a data section, a check bit, a signal end section, wherein,

the signal starting section is N pulse width modulation signals with a first duty ratio, and N is any positive integer;

the data segment is 136 pulse width modulation signals, the check bit is 1 pulse width modulation signal, wherein the pulse width modulation signal with the duty ratio of the second duty ratio corresponds to 0 in the binary system, and the pulse width modulation signal with the duty ratio of the third duty ratio corresponds to 1 in the binary system;

the signal end section comprises M pulse width modulation signals with a fourth duty ratio, wherein M is any positive integer.

4. A vehicle charging method is applied to a charging pile, and comprises the following steps:

sending a preset voltage signal to a vehicle to be charged through a preset signal line;

receiving a target vehicle identification number transmitted by the vehicle to be charged through the preset signal line, wherein the target vehicle identification number is transmitted in the form of a pulse width modulation signal;

when the target vehicle identification number is confirmed to pass the verification, sending a preset pulse width modulation signal to the vehicle to be charged through the preset signal line;

and when the preset signal line is judged to be conducted with the preset confirmation circuit, starting to charge the vehicle to be charged.

5. The method of claim 4, further comprising:

verifying the target vehicle identification number according to a database, wherein the database comprises vehicle identification numbers of vehicles allowed to be charged;

the determining that the target vehicle identification number is verified comprises:

determining that the target vehicle identification number is verified when the same vehicle identification number as the target vehicle identification number can be matched in the database.

6. The method of claim 4, further comprising:

sending the target vehicle identification number to a server so that the server can verify the target vehicle identification number;

the determining that the target vehicle identification number is verified comprises:

and when a determination instruction sent by the server is received, determining that the target vehicle identification number passes verification.

7. A vehicle charging apparatus, characterized by being applied to a vehicle, the apparatus comprising:

the first acquisition module is used for acquiring a preset voltage signal from a preset signal line;

the first sending module is used for sending the target vehicle identification number to the charging pile in the form of a pulse width modulation signal through the preset signal line when the preset voltage signal is obtained;

the second acquisition module is used for acquiring a preset pulse width modulation signal from the preset signal line;

and the first control module is used for conducting the preset signal line and a preset confirmation circuit when the preset pulse width modulation signal is acquired, so that the charging pile charges the vehicle to be charged.

8. A vehicle charging device, characterized in that, is applied to fill electric pile, the device includes:

the second sending module is used for sending a preset voltage signal to the vehicle to be charged through a preset signal line;

the first receiving module is used for receiving a target vehicle identification number sent by the vehicle to be charged through the preset signal line, wherein the target vehicle identification number is sent in a pulse width modulation signal mode;

the third sending module is used for sending a preset pulse width modulation signal to the vehicle to be charged through the preset signal line when the target vehicle identification number is determined to pass the verification;

and the charging judgment module is used for starting to charge the vehicle to be charged when the preset signal line is judged to be conducted with the preset confirmation circuit.

9. A vehicle characterized by comprising the vehicle charging device according to claim 7.

10. A charging pile characterized by comprising the vehicle charging device according to claim 8.

Technical Field

The disclosure relates to the field of vehicles, in particular to a vehicle charging method and device, a vehicle and a charging pile.

Background

Disclosure of Invention

The invention aims to provide a vehicle charging method, a vehicle charging device, a vehicle and a charging pile.

In order to achieve the above object, the present disclosure provides a vehicle charging method applied to a vehicle, the method including:

acquiring a preset voltage signal from a preset signal line;

when the preset voltage signal is obtained, sending a target vehicle identification number to the charging pile in the form of a pulse width modulation signal through the preset signal line, wherein the target vehicle identification number is the vehicle identification number of the vehicle to be charged;

acquiring a preset pulse width modulation signal from the preset signal line;

and when the preset pulse width modulation signal is acquired, the preset signal line is conducted with a preset confirmation circuit, so that the charging pile charges the vehicle to be charged.

Optionally, before the obtaining a preset pwm signal from the preset signal line, the method further includes:

judging whether the target vehicle identification number is sent completely;

and when the target vehicle identification number is judged to be completely transmitted, executing the step of acquiring a preset pulse width modulation signal from the preset signal line.

Optionally, when the preset voltage signal is obtained, sending the target vehicle identification number to the charging pile in a pulse width modulation signal form through the preset signal line includes:

and when the preset voltage signal is acquired, the target vehicle identification number is sent to the charging pile three times in the form of the pulse width modulation signal through the preset signal line.

Optionally, the pulse width modulated signal characterizing the target vehicle identification number comprises: a signal start section, a data section, a check bit, a signal end section, wherein,

the signal starting section is N pulse width modulation signals with a first duty ratio, and N is any positive integer;

the data segment is 136 pulse width modulation signals, the check bit is 1 pulse width modulation signal, wherein the pulse width modulation signal with the duty ratio of the second duty ratio corresponds to 0 in the binary system, and the pulse width modulation signal with the duty ratio of the third duty ratio corresponds to 1 in the binary system;

the signal end section comprises M pulse width modulation signals with a fourth duty ratio, wherein M is any positive integer.

Optionally, N is not equal to M.

The present disclosure also provides a vehicle charging method applied to a charging pile, the method including:

sending a preset voltage signal to a vehicle to be charged through a preset signal line;

receiving a target vehicle identification number transmitted by the vehicle to be charged through the preset signal line, wherein the target vehicle identification number is transmitted in the form of a pulse width modulation signal;

when the target vehicle identification number is confirmed to pass the verification, sending a preset pulse width modulation signal to the vehicle to be charged through the preset signal line;

and when the preset signal line is judged to be conducted with the preset confirmation circuit, starting to charge the vehicle to be charged.

Optionally, the receiving, through the preset signal line, the target vehicle identification number sent by the vehicle to be charged includes:

and receiving the target vehicle identification number transmitted by the vehicle to be charged for 3 times through the preset signal line.

Optionally, the method further comprises:

verifying the target vehicle identification number according to a database, wherein the database comprises vehicle identification numbers of vehicles allowed to be charged;

the determining that the target vehicle identification number is verified comprises:

determining that the target vehicle identification number is verified when the same vehicle identification number as the target vehicle identification number can be matched in the database.

Optionally, the method further comprises:

sending the target vehicle identification number to a server so that the server can verify the target vehicle identification number;

the determining that the target vehicle identification number is verified comprises:

and when a determination instruction sent by the server is received, determining that the target vehicle identification number passes verification.

The present disclosure also provides a vehicle charging device applied to a vehicle, the device including:

the first acquisition module is used for acquiring a preset voltage signal from a preset signal line;

the first sending module is used for sending the target vehicle identification number to the charging pile in the form of a pulse width modulation signal through the preset signal line when the preset voltage signal is obtained;

the second acquisition module is used for acquiring a preset pulse width modulation signal from the preset signal line;

and the first control module is used for conducting the preset signal line and a preset confirmation circuit when the preset pulse width modulation signal is acquired, so that the charging pile charges the vehicle to be charged.

Optionally, before the second obtaining module obtains a preset pwm signal from the preset signal line, the apparatus further includes:

the judging module is used for judging whether the vehicle identification number is sent completely;

the second obtaining module is further configured to perform the step of obtaining a preset pwm signal from the preset signal line after it is determined that the target vehicle identification number has been transmitted.

Optionally, the first sending module is further configured to:

and when the preset voltage signal is acquired, the target vehicle identification number is sent to the charging pile three times in the form of the pulse width modulation signal through the preset signal line.

Optionally, the pulse width modulated signal characterizing the target vehicle identification number comprises: a signal start section, a data section, a check bit, a signal end section, wherein,

the signal starting section is N pulse width modulation signals with a first duty ratio, and N is any positive integer;

the data segment is 136 pulse width modulation signals, the check bit is 1 pulse width modulation signal, wherein the pulse width modulation signal with the duty ratio of the second duty ratio corresponds to 0 in the binary system, and the pulse width modulation signal with the duty ratio of the third duty ratio corresponds to 1 in the binary system;

the signal end section comprises M pulse width modulation signals with a fourth duty ratio, wherein M is any positive integer.

Optionally, N is not equal to M.

The present disclosure still provides a vehicle charging device, is applied to and fills electric pile, the device includes:

the second sending module is used for sending a preset voltage signal to the vehicle to be charged through a preset signal line;

the first receiving module is used for receiving a target vehicle identification number sent by the vehicle to be charged through the preset signal line, wherein the target vehicle identification number is sent in a pulse width modulation signal mode;

the third sending module is used for sending a preset pulse width modulation signal to the vehicle to be charged through the preset signal line when the target vehicle identification number is determined to pass the verification;

and the charging judgment module is used for starting to charge the vehicle to be charged when the preset signal line is judged to be conducted with the preset confirmation circuit.

Optionally, the first receiving module is further configured to:

and receiving the target vehicle identification number transmitted by the vehicle to be charged 3 times through the preset signal line.

Optionally, the apparatus further comprises:

the verification module is used for verifying the target vehicle identification number according to a database, wherein the database comprises vehicle identification numbers of vehicles allowed to be charged;

the third sending module includes:

a first determining sub-module, configured to determine that the target vehicle identification number is verified when the verification module can match, in the database, the vehicle identification numbers that are the same as the target vehicle identification number.

Optionally, the apparatus further comprises:

the fourth sending module is used for sending the target vehicle identification number to a server so that the server can verify the vehicle identification number;

the third sending module includes:

and the second determining submodule is used for determining that the target vehicle identification number passes the verification when a determining instruction sent by the server is received.

The present disclosure also provides a vehicle including the vehicle charging device applied to the vehicle described above.

The present disclosure also provides a charging pile, including the above vehicle charging device applied to charging pile.

Through the technical scheme, after the charging gun is inserted into the vehicle, the vehicle identification number of the vehicle is sent to the charging pile by utilizing the pulse width modulation signal, so that the information capable of confirming the identity of the vehicle can be automatically provided for the charging pile as long as the charging gun is inserted when the vehicle needs to be charged, the step of swiping the card in the charging process is omitted, the charging process of the vehicle is simplified, and the electric vehicle is more convenient to use.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a flowchart illustrating a vehicle charging method applied to a vehicle according to an exemplary embodiment of the present disclosure.

Fig. 2 is a flowchart illustrating a vehicle charging method applied to a vehicle according to still another exemplary embodiment of the present disclosure.

Fig. 3 is a flowchart illustrating a vehicle charging method applied to a charging pile according to an exemplary embodiment of the present disclosure

Fig. 4 is a flowchart illustrating a vehicle charging method applied to a charging post according to still another exemplary embodiment of the present disclosure.

Fig. 5 is a flowchart illustrating a vehicle charging method applied to a charging post according to still another exemplary embodiment of the present disclosure.

Fig. 6 is an interaction diagram among a charging pile, a vehicle to be charged, and a server in a vehicle charging method according to an exemplary embodiment of the present disclosure.

Fig. 7 is a block diagram illustrating a structure of a vehicle charging apparatus applied to a vehicle according to an exemplary embodiment of the present disclosure.

Fig. 8 is a block diagram illustrating a structure of a vehicle charging apparatus applied to a vehicle according to still another exemplary embodiment of the present disclosure.

Fig. 9 is a block diagram illustrating a structure of a vehicle charging apparatus applied to a charging post according to an exemplary embodiment of the present disclosure.

Fig. 10 is a block diagram illustrating a structure of a vehicle charging apparatus applied to a charging post according to still another exemplary embodiment of the present disclosure.

Fig. 11 is a block diagram illustrating a structure of a vehicle charging apparatus applied to a charging post according to still another exemplary embodiment of the present disclosure.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

Fig. 1 is a flowchart illustrating a vehicle charging method applied to a vehicle according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the method includes steps 101 to 104.

In step 101, a preset voltage signal is obtained from a preset signal line. The preset signal line may be a Control Pilot (CP) line. According to the related requirement of charging the electric vehicle by using a non-vehicle-mounted conductive charger in the national standard of the people's republic of China, the preset voltage signal is required to be constant 9V. That is, when the charging gun of the charging pile is inserted into the charging interface of the vehicle to be charged, the charging pile transmits a constant voltage signal to the vehicle through the CP line connecting the charging gun and the vehicle to be charged, and the voltage value of the voltage signal should be 9V according to the national standard.

In step 102, when the preset voltage signal is obtained, a target vehicle identification number is sent to the charging pile in a pulse width modulation signal form through the preset signal line, wherein the target vehicle identification number is a vehicle identification number of a vehicle to be charged. When the preset voltage signal is acquired, the charging pile is connected with the vehicle to be charged through the charging gun, and at the moment, the vehicle identification number of the vehicle to be charged, namely the target vehicle identification number, is sent to the charging pile in the form of a pulse width modulation signal through the preset signal line.

Each vehicle has a unique vehicle identification number when leaving the factory, and the identity of the vehicle can be identified without objection according to the vehicle identification number. In order to transmit the vehicle identification number by the pulse width modulation signal, the original vehicle identification number may be converted according to an ASCII code look-up table, all the numbers and letters in the vehicle identification number are converted into numbers, and then the numbers and letters are represented by a binary system, and further the numbers and letters are represented by the pulse width modulation signal.

The ASCII code comparison table of common numbers and letters is shown in Table 1, and it can be seen that each letter or number can be represented by 6-bit or 7-bit binary digits after being converted. Thus, in one possible embodiment, when the vehicle identification number is transmitted using a pulse width modulated signal, where each letter or number is obtained as an 8-bit binary representation, the upper bits of less than 8 bits are complemented by 0.

TABLE 1

Character or letter	AscII code comparison	Binary system	Character or letter	AscII code comparison	Binary system	Character or letter	AScII code comparison	Binary system
									0	48	110000	C	67	1000011	0	79	1001111
1	49	110001	D	68	1000100	P	80	1010000
									2	50	110010	E	69	1000101	Q	81	1010001
3	51	110011	F	70	1000110	R	82	1010010
									4	52	110100	G	71	1000111	S	83	1010011
5	53	110101	H	72	1001000	T	84	1010100
									6	54	110110	I	73	1001001	U	85	1010101
7	55	110111	J	74	1001010	V	86	1010110
									8	56	111000	K	75	1001011	W	87	1010111
9	57	111001	L	76	1001100	X	88	1011000
									A	65	1000001	M	77	1001101	Y	89	1011001
B	66	1000010	N	78	1001110	Z	90	1011010

In step 103, a preset pwm signal is obtained from the preset signal line. According to the regulations in the national standards of the people's republic of China, before a charging pile charges a vehicle to be charged, a pulse width modulation signal with the voltage of 9V, namely the preset pulse width modulation signal, needs to be sent to the vehicle to be charged, so that the vehicle to be charged is indicated that the charging pile is ready to charge the vehicle to be charged.

In step 104, when the preset pwm signal is obtained, the preset signal line is connected to a preset confirmation circuit, so that the charging pile charges the vehicle to be charged.

The preset confirmation circuit may be, for example, a voltage dividing circuit, and after the preset confirmation circuit is turned on, the voltage on the preset signal line may be reduced, so that the charging pile confirms that the vehicle with charging is ready to be charged, thereby charging the vehicle to be charged. The voltage divider circuit may comprise, for example, a preset resistor, and the manner of turning on the voltage divider circuit may be, for example, closing a preset switch. That is, the preset confirmation circuit may be turned on by closing the preset switch connected in series between the preset signal line and the preset resistor, so as to turn on the preset signal line and the preset resistor, thereby reducing the voltage on the preset signal line.

The preset resistor is a resistor which is specified in the national standard of the people's republic of china and should be connected with the preset signal line, and the resistance value of the preset resistor can be 1300 Ω, for example. The predetermined switch is the switch S2 connected to the CP line in the national standard. The preset vehicle to be charged monitors the preset signal line all the time, when the pulse width modulation signal with the voltage of 9V meeting the condition, namely the preset pulse width modulation signal, is monitored, the switch S2 is closed, the preset resistor is connected into the circuit, the voltage in the CP line is reduced, and therefore the charging pile charges the vehicle to be charged.

Through the technical scheme, after the charging gun is inserted into the vehicle, the vehicle identification number of the vehicle is sent to the charging pile by utilizing the pulse width modulation signal, so that the information capable of confirming the identity of the vehicle can be automatically provided for the charging pile as long as the charging gun is inserted when the vehicle needs to be charged, the step of swiping the card in the charging process is omitted, the charging process of the vehicle is simplified, and the electric vehicle is more convenient to use.

Fig. 2 is a flowchart illustrating a vehicle charging method applied to a vehicle according to still another exemplary embodiment of the present disclosure. As shown in fig. 2, the method further comprises step 201 before step 103 shown in fig. 1.

In step 201, it is determined whether the transmission of the target vehicle identification number has been completed, and after it is determined that the transmission of the target vehicle identification number has been completed, step 103 shown in fig. 1 is performed.

The acquisition of the preset pwm signal on the preset signal line, i.e., the CP line, is performed all the time in step 103 shown in fig. 1, but the charging pile must not transmit the preset pwm signal until the transmission of the target vehicle identification number to the charging pile by the vehicle to be charged is completed. In order to avoid the overlong waiting time of the preset pulse width modulation signal, the sending state of the target vehicle identification number is judged, and the CP line is monitored only after the target vehicle identification number is sent.

The method for judging whether the target vehicle identification number is completely transmitted may be to set a flag bit to represent whether the target vehicle identification number is completely transmitted. For example, when the target vehicle identification number is being transmitted, the flag is 1; when the transmission of the target vehicle identification number is finished, the flag bit becomes 0. Thereby, it is determined whether the transmission of the target vehicle identification number is completed.

Through the technical scheme, the problem that the waiting time is too long when the preset pulse width modulation signal on the preset signal line is acquired due to the fact that the target vehicle identification number needs to be sent can be solved.

In a possible embodiment, the sending the target vehicle identification number to the charging pile through the preset signal line in the form of a pulse width modulation signal when the preset voltage signal is obtained includes: and when the preset voltage signal is acquired, the target vehicle identification number is sent to the charging pile three times in the form of the pulse width modulation signal through the preset signal line. Because signal transmission can not guarantee one hundred percent correct rate, consequently, in order to fill electric pile and can receive correct target vehicle identification number, the vehicle that waits to charge sends cubic target vehicle identification number to filling electric pile to supply to fill electric pile to carry out the check-up to a plurality of target vehicle identification numbers that receive, confirm whether receive correct target vehicle identification number. When the target vehicle identification number is transmitted as a pulse width modulation signal, the target vehicle identification number needs to be converted into a binary format, and may be, for example, the ASCII lookup table.

In one possible embodiment, the pulse width modulated signal characterizing the target vehicle identification number comprises: the device comprises a signal starting section, a data section, a check bit and a signal ending section, wherein the signal starting section is N pulse width modulation signals with first duty ratios, and N is any positive integer; the data segment is 136 pulse width modulation signals, the check bit is 1 pulse width modulation signal, wherein the pulse width modulation signal with the duty ratio of the second duty ratio corresponds to 0 in the binary system, and the pulse width modulation signal with the duty ratio of the third duty ratio corresponds to 1 in the binary system; the signal end section comprises M pulse width modulation signals with a fourth duty ratio, wherein M is any positive integer. The first duty cycle, the second duty cycle and the third duty cycle are different from each other, and the first duty cycle and the fourth duty cycle may be the same or different from each other.

In a possible embodiment, N is not equal to M to better distinguish between the signal start segment and the signal end segment. For example, N may take the value of 2, and M may take the value of 3.

The content of the pwm signal representing the target vehicle identification number may be in other forms, which is not limited in this disclosure as long as the target vehicle identification number can be successfully transmitted between the charging pile and the vehicle to be charged.

Fig. 3 is a flowchart illustrating a vehicle charging method applied to a charging post according to an exemplary embodiment of the present disclosure. As shown in fig. 3, the method includes steps 301 to 304.

In step 301, a preset voltage signal is sent to a vehicle to be charged through a preset signal line. The preset signal line may be a Control Pilot (CP) line. According to the related requirement of charging the electric vehicle by using a non-vehicle-mounted conductive charger in the national standard of the people's republic of China, the preset voltage signal is required to be constant 9V. When the vehicle that waits to charge inserts the rifle that charges on the electric pile of filling, fill electric pile and then can send this preset voltage signal through this signal line that predetermines to the vehicle that waits to charge.

In step 302, a target vehicle identification number transmitted by the vehicle to be charged is received through the preset signal line, wherein the target vehicle identification number is transmitted in the form of a pulse width modulation signal. After charging pile connects the vehicle of treating the charging, this vehicle of treating the charging can be through this predetermined signal line to charging pile send this vehicle identification number of the vehicle of treating the charging, target vehicle identification number promptly, and through the form of pulse width modulation signal. The preset signal line may be a CP line.

In step 303, when it is determined that the target vehicle identification number is verified, a preset pulse width modulation signal is sent to the vehicle to be charged through the preset signal line. According to the national standard of the people's republic of China, the voltage of the preset pulse width modulation signal should be 9V. After receiving the target vehicle identification number sent by the vehicle to be charged through the preset signal line, determining whether the target vehicle identification number can be verified, if the target vehicle identification number is verified, indicating that the vehicle to be charged can be charged by using the charging pile, and therefore sending a preset pulse width modulation signal to the vehicle to be charged which is verified to pass through the preset signal line. The manner in which the verification of the target vehicle identification number is determined may be two as shown in fig. 4 and 5, which will be described in detail below.

In step 304, when it is determined that the preset signal line is conducted with a preset confirmation circuit, charging of the vehicle to be charged is started. The preset confirmation circuit may be, for example, a voltage divider circuit, and the determining that the preset signal line is connected to the preset confirmation circuit may include: and detecting the voltage on the preset signal line, and judging that the preset signal line is conducted with the preset confirmation circuit when the voltage on the preset signal line is within a preset range. The preset range may be 5.2V to 6.8V. After the charging pile sends the preset width modulation signal to the vehicle to be charged, the vehicle to be charged pulls down the voltage on the preset signal line to the preset range to indicate that the vehicle to be charged is ready to be charged, for example, the pulled-down voltage on the preset signal line may preferably be 6V.

Through the technical scheme, after the charging pile is connected with the vehicle to be charged, the preset pulse width modulation signal is not directly transmitted to the vehicle to be charged through the preset signal line, and the target vehicle identification number transmitted by the vehicle to be charged is received first to judge whether the vehicle to be charged can be charged or not. When the target vehicle identification number sent by the vehicle to be charged passes the verification, the preset pulse width modulation signal is sent to the vehicle to be charged through the preset signal line, and whether the preset signal line is conducted with the preset confirmation circuit or not is judged to determine when to start charging the vehicle to be charged.

In one possible embodiment, the receiving, through the preset signal line, the target vehicle identification number transmitted by the vehicle to be charged includes: and receiving the target vehicle identification number transmitted by the vehicle to be charged for 3 times through the preset signal line. Because signal transmission can not guarantee one hundred percent correct rate, consequently, in order to fill electric pile and can receive correct target vehicle identification number, the vehicle that waits to charge sends cubic target vehicle identification number to filling electric pile to supply to fill electric pile to carry out the check-up to a plurality of target vehicle identification numbers that receive, confirm whether receive correct target vehicle identification number. The verification method may be, for example, when any two or three of the received 3 target vehicle identification numbers are the same, the verification is passed, and the target vehicle identification number having the same target vehicle identification number is used as the target vehicle identification number of the vehicle to be charged. When the target vehicle identification number is transmitted as a pulse width modulation signal, the target vehicle identification number needs to be converted into a binary format, and may be, for example, the ASCII lookup table.

Fig. 4 is a flowchart illustrating a vehicle charging method applied to a charging post according to still another exemplary embodiment of the present disclosure. As shown in fig. 4, the method includes step 401 in addition to step 301 to step 304.

In step 401, the target vehicle identification number is verified against a database that includes vehicle identification numbers of vehicles that are permitted to be charged. The database can be stored in the charging pile, and the charging pile verifies the target vehicle identification number according to the database so as to determine whether the target vehicle identification number can be found to be the same as the target vehicle identification number in the database. The verification of the target vehicle identification number in the charging pile enables the verification process to be faster, and the waiting time for charging after the vehicle to be charged is connected with the charging pile can be shortened to a certain extent.

In this embodiment, the determining that the target vehicle identification number passes the verification includes: determining that the target vehicle identification number is verified when the same vehicle identification number as the target vehicle identification number can be matched in the database.

Fig. 5 is a flowchart illustrating a vehicle charging method applied to a charging post according to still another exemplary embodiment of the present disclosure. As shown in fig. 5, the method includes step 501 in addition to steps 301 to 304.

The target vehicle identification number is sent to a server in step 501 to enable the server to verify the target vehicle identification number. And after receiving the target vehicle identification number sent by the vehicle to be charged, the charging pile sends the target vehicle identification number to the server, and carries out the next charging operation according to the instruction sent by the server. Therefore, the verification oil server of the target vehicle identification number is completed, the workload of the charging pile is reduced, the server can also count the charging time, frequency, charging quantity and other information of different vehicles through the target vehicle identification number, and better management and resource allocation are facilitated.

In this embodiment, the determining that the target vehicle identification number passes the verification includes: and when a determination instruction sent by the server is received, determining that the target vehicle identification number passes verification. The determination instruction may be, for example, an instruction indicating that the charging pile allows charging.

The interaction between the charging post, the vehicle to be charged and the server in a vehicle charging method according to an exemplary embodiment of the present disclosure is given below according to fig. 6.

As shown in fig. 6, after the vehicle to be charged is connected to the charging pile, the charging pile performs step 601, and sends a voltage of 9V to the vehicle to be charged through the CP line;

after receiving the 9V voltage sent by the charging pile, the vehicle to be charged executes step 602, and starts to send a target vehicle identification number to the charging pile for 3 times in a form of a pulse width modulation signal through a CP line, so that the charging pile can receive three target vehicle identification numbers;

after receiving the three target vehicle identification numbers, the charging pile firstly checks the three target vehicle identification numbers and judges whether more than two target vehicle identification numbers are the same. For example, when the received three target vehicle identification numbers are respectively a first target vehicle identification number, a second target vehicle identification number and a third target vehicle identification number, if the three target vehicle identification numbers are different, the verification fails, and the subsequent steps are not performed; if two target vehicle identification numbers are the same or three target vehicle identification numbers are the same, for example, if the first target vehicle identification number is the same as the second target vehicle identification number, or the second target vehicle identification number is the same as the third target vehicle identification number, or the first target vehicle identification number, the second target vehicle identification number and the third target vehicle identification number are the same, the verification is successful, and the corresponding target vehicle identification number with the same number is taken as the correct target vehicle identification number;

then step 603 is executed, and the verified target vehicle identification number is sent to a server for verification;

after receiving the target vehicle identification number sent by the charging pile, the server verifies the target vehicle identification number, determines whether the vehicle to be charged is allowed to be charged on the charging pile, and if the vehicle to be charged passes the verification, executes step 604, and sends a confirmation instruction to the charging pile so as to allow the charging pile to charge the vehicle to be charged;

after receiving the confirmation signal sent by the server, the charging pile executes step 605, and sends a 9V pulse width modulation signal to the vehicle to be charged through the CP line to indicate that the charging pile is ready for charging;

after receiving the pulse width modulation signal, the vehicle to be charged closes a switch S2 connected with the CP wire according to the national standard so as to connect a preset resistor with the CP wire and pull down the voltage on the CP wire;

after detecting that the voltage on the CP line falls within a preset range, for example, when the voltage on the CP line falls to 6V, the charging pile starts to output ac power through other lines for charging to charge the vehicle to be charged.

Fig. 7 is a block diagram illustrating a structure of a vehicle charging apparatus 100 applied to a vehicle according to an exemplary embodiment of the present disclosure. As shown in fig. 7, the apparatus 100 includes:

the first obtaining module 110 is configured to obtain a preset voltage signal from a preset signal line.

And the first sending module 120 is configured to send the target vehicle identification number to the charging pile in the form of a pulse width modulation signal through the preset signal line when the preset voltage signal is obtained.

A second obtaining module 130, configured to obtain a preset pwm signal from the preset signal line.

The first control module 140 is configured to, when the preset pulse width modulation signal is acquired, turn on the preset signal line and a preset confirmation circuit, so that the charging pile charges a vehicle to be charged.

Fig. 8 is a block diagram illustrating a structure of a vehicle charging apparatus 100 applied to a vehicle according to still another exemplary embodiment of the present disclosure. As shown in fig. 8, the apparatus 100 further includes:

a judging module 150, configured to judge whether the vehicle identification number has been sent;

the second obtaining module 130 is further configured to perform the step of obtaining a preset pwm signal from the preset signal line after the determining module 150 determines that the target vehicle identification number has been sent.

In a possible implementation, the first sending module 120 is further configured to: and when the preset voltage signal is acquired, the target vehicle identification number is sent to the charging pile three times in the form of the pulse width modulation signal through the preset signal line.

In one possible embodiment, the pulse width modulated signal characterizing the target vehicle identification number comprises: a signal start section, a data section, a check bit, a signal end section, wherein,

the signal starting section is N pulse width modulation signals with a first duty ratio, and N is any positive integer;

the data segment is 136 pulse width modulation signals, the check bit is 1 pulse width modulation signal, wherein the pulse width modulation signal with the duty ratio of the second duty ratio corresponds to 0 in the binary system, and the pulse width modulation signal with the duty ratio of the third duty ratio corresponds to 1 in the binary system;

the signal end section comprises M pulse width modulation signals with a fourth duty ratio, wherein M is any positive integer.

In one possible embodiment, N is not equal to M.

Fig. 9 is a block diagram illustrating a structure of a vehicle charging apparatus 200 applied to a charging post according to an exemplary embodiment of the present disclosure. As shown in fig. 9, the apparatus 200 includes:

the second sending module 210 is configured to send a preset voltage signal to the vehicle to be charged through a preset signal line;

a first receiving module 220, configured to receive, through the preset signal line, a target vehicle identification number sent by the vehicle to be charged, where the target vehicle identification number is sent in a form of a pulse width modulation signal;

a third sending module 230, configured to send a preset pulse width modulation signal to the vehicle to be charged through the preset signal line when it is determined that the target vehicle identification number passes verification;

and a charging judgment module 240, configured to start charging the vehicle to be charged when it is determined that the preset signal line is conducted with a preset confirmation circuit.

In a possible implementation, the first receiving module 220 is further configured to: and receiving the target vehicle identification number transmitted by the vehicle to be charged 3 times through the preset signal line.

Fig. 10 is a block diagram illustrating a structure of a vehicle charging apparatus 200 applied to a charging post according to still another exemplary embodiment of the present disclosure. As shown in fig. 10, the apparatus 200 further includes:

a verification module 250, configured to verify the vehicle identification number according to a database, where the database includes vehicle identification numbers of vehicles allowed to be charged;

the third sending module 230 includes:

a first determining sub-module 2301, configured to determine that the vehicle identification number is verified when the verification module 250 can match the vehicle identification number in the database, wherein the vehicle identification number is identical to the target vehicle identification number.

Fig. 11 is a block diagram illustrating a structure of a vehicle charging apparatus 200 applied to a charging post according to still another exemplary embodiment of the present disclosure. As shown in fig. 11, the apparatus 200 further includes:

a fourth sending module 260, configured to send the vehicle identification number to a server, so that the server verifies the vehicle identification number;

the third sending module 230 includes:

the second determining sub-module 2302 is used for determining that the vehicle identification number is verified when a determining instruction sent by the server is received.

The present disclosure also provides a vehicle including the vehicle charging device 100 described above applied to the vehicle.

The present disclosure also provides a charging pile including the above-mentioned vehicle charging device 200 applied to the charging pile.

It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working process of the functional module, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.