Method, apparatus and network device for improving charging compatibility

Abstract

The application provides a method, device and network equipment for improving charging compatibility, which are applied to a vehicle and include the following steps: in the case that a vehicle charging gun is inserted into a charging pile, a stop message sent by the charging pile is received, and charging is stopped; wherein the stop message carries a peak value of a charging request value of this charging request; in the case that the vehicle charging gun is reinserted into the charging pile, the charging request value carried by this charging request is determined according to the peak value of the charging request value carried by the stop message and a request current value of the vehicle charging gun this time; and a charging request carrying the determined charging request value is sent. After charging is stopped in a certain gun insertion, the gun is pulled out and reinserted, the charging request value carried by this charging request is determined according to the peak value of the charging request value in the stop message and the request current value of the vehicle charging gun this time, and the charging request is sent, so that the problem that the peak value of the maximum output current is greater than the safety threshold of the charging pile and charging cannot be continued is solved, and the problem of such charging compatibility is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a method and device for improving charging compatibility and network equipment. BACKGROUND

[0002] With the rapid development of new energy vehicles, there are more and more direct current fast charging piles, with various brands, various hardware and software versions, different construction years, and different control precisions of new and old equipment, resulting in complex and various charging compatibility problems. Direct current fast charging uses CAN (Controller Area Network) message transmission and reception between the vehicle end and the pile end to interact information, and the vehicle end will request the charging current according to the maximum output current in the CML (charger maximum / minimum output parameter message) of the charging pile. Since the current charging current capacity of the vehicle end exceeds the maximum output current value of the charging pile, the vehicle can only request the current according to the maximum output current in the CML of the charging pile. However, at present, some charging stations have a problem that when the charging pile outputs the maximum current value, the fluctuation value is greater than the maximum allowed current value of the pile end, and after the pile end internal sensor detects this situation, the pile end sends a CST (charger stopping charging message) to stop charging, resulting in that the user cannot charge. The current technical solution is to prompt the charging stop reason at the pile end and the vehicle end, and does not solve the compatibility problem. SUMMARY

[0003] The present application aims to provide a method and device for improving charging compatibility and network equipment, to solve the problem that the fluctuation value of the output current of the charging pile in the charging process is greater than the maximum allowed current value of the charging pile, which easily leads to charging stop.

[0004] To solve the above technical problems, the present application provides a method for improving charging compatibility, which is applied to a vehicle and includes the following steps.

[0005] In the case that the vehicle charging gun is inserted into the charging pile, a stop message sent by the charging pile is received, and charging is stopped; wherein the stop message carries a peak value of a charging request value of this charging request;

[0006] In the case that the vehicle charging gun is reinserted into the charging pile, a charging request value carried by the charging request is determined according to the peak value of the charging request value carried by the stop message and a request current value of the vehicle charging gun this time;

[0007] A charging request carrying the determined charging request value is sent.

[0008] Optionally, the method, wherein the determining the charging request value carried by the current charging request according to the peak value of the charging request value carried by the abort message and the request current value of the current vehicle charging gun comprises:

[0009] subtracting the first step value from the peak value of the charging request value carried by the abort message to obtain a preselected current value;

[0010] selecting the minimum value between the preselected current value and the request current value of the current vehicle charging gun as the charging request value carried by the current charging request.

[0011] Optionally, the method, wherein before the receiving the abort message sent by the charging pile, the method further comprises:

[0012] in the case that the vehicle charging gun is inserted into the charging pile, determining the charging request value of the current charging request according to the maximum output current value in the initial message of the charging pile and the request current value of the current vehicle charging gun;

[0013] sending a charging request to the charging pile; wherein the charging request carries the determined charging request value.

[0014] Optionally, the method, wherein after the receiving the abort message sent by the charging pile, the method further comprises:

[0015] in the case that the charging gun is not reinserted into the charging pile, if the vehicle is started and the vehicle speed is greater than or equal to a specified value, stopping the step of determining the charging request value carried by the current charging request according to the peak value of the charging request value carried by the abort message and the request current value of the current vehicle charging gun.

[0016] Optionally, the method, wherein after the receiving the abort message sent by the charging pile, the method further comprises:

[0017] if the time interval between the receiving the abort message and the reinsertion of the charging gun into the charging pile is greater than t, stopping the step of determining the charging request value carried by the current charging request according to the peak value of the charging request value carried by the abort message and the request current value of the current vehicle charging gun.

[0018] To achieve the above object, the application provides a device for improving charging compatibility, wherein the device is applied to a vehicle and comprises:

[0019] a first receiving module, configured to receive an abort message sent by a charging pile in the case that a vehicle charging gun is inserted into the charging pile, and stop charging; wherein the abort message carries a peak value of a charging request value of a current charging request;

[0020] The first determining module is configured to determine a charging request value carried by a current charging request according to a peak value of the charging request value carried by the suspension message and a request current value of the vehicle charging gun in the case that the vehicle charging gun is reinserted into the charging pile.

[0021] The first sending module is configured to send the charging request carrying the determined charging request value.

[0022] To achieve the above object, the application provides a network device for improving charging compatibility, which is applied to a vehicle and comprises a memory, a transceiver and a processor.

[0023] The memory is configured to store a computer program.

[0024] The transceiver is configured to transceive data under the control of the processor.

[0025] The processor is configured to read the computer program in the memory and execute the method for improving charging compatibility as described above.

[0026] The above technical solutions of the application have the following beneficial effects:

[0027] In the above scheme, after the first charging is suspended, the gun is pulled out and reinserted, the charging request value carried by a current charging request is determined according to a peak value of the charging request value in the suspension message and a request current value of the vehicle charging gun, and the charging request is sent, so that the problem that the peak value of the maximum output current is greater than the safety threshold of the charging pile and the charging cannot be continued is avoided, and the charging compatibility problem is solved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The flowchart of the method for improving charging compatibility described in the embodiments of the application;

[0029] Figure 2 The schematic diagram of the device for improving charging compatibility described in the embodiments of the application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0031] In the prior art, for a vehicle model with strong charging performance (a vehicle inherent charging request value is greater than a charging pile maximum output current value), the vehicle sends a charging request according to the charging pile maximum output current value, and due to charging pile power module control precision, new and old degree and other reasons, the peak value of the charging request value exceeds a safety threshold, causing the charging pile to stop charging.

[0032] The present application provides a method, device and network equipment for improving charging compatibility to solve the problem that the output current fluctuation value of the charging pile in the prior art charging process is greater than the maximum allowable current value of the charging pile, which easily leads to charging stop.

[0033] As shown in Figure 1 The present application provides a method for improving charging compatibility, applied to a vehicle, which comprises the following steps:

[0034] Step S10, in the case that the vehicle charging gun is inserted into the charging pile, receiving a stop message sent by the charging pile, and stopping charging; wherein the stop message carries a peak value of a charging request value of this charging request;

[0035] Step S20, in the case that the vehicle charging gun is reinserted into the charging pile, determining a charging request value carried by this charging request according to the peak value of the charging request value carried by the stop message and a request current value of the vehicle charging gun this time;

[0036] Step S30, sending a charging request carrying the determined charging request value.

[0037] In this embodiment, after the charging is stopped in a certain gun insertion charging, the gun is pulled out and reinserted, the peak value of the charging request value in the stop message and the request current value of the vehicle charging gun this time are used to determine the charging request value carried by this charging request, and the charging request is sent, so that the peak value of the maximum output current greater than the safety threshold of the charging pile is avoided to cause the charging to continue, and the problem of such charging compatibility is solved.

[0038] Optionally, the above step S20 comprises:

[0039] The peak value of the charging request value carried by the stop message is subtracted by a first step length to obtain a preselected current value;

[0040] The minimum value of the preselected current value and the request current value of the vehicle charging gun this time is selected as the charging request value carried by this charging request.

[0041] In this embodiment, the minimum value of the preselected current value obtained by subtracting a step length C from the peak value of the charging request value carried by the stop message and the request current value of the vehicle charging gun this time is selected as the charging request value carried by this charging request, and the formula is as follows:

[0042]

[0043] BCL(I) is the charging request value carried by the current charging request, is the peak value of the charging request value carried by the abort message, that is, the actual maximum current value of the charging pile in the last charging process, C is the first step, which is a calibration value set according to different vehicle models, and I 车端ECU is the request current value of the current vehicle charging gun.

[0044] Optionally, before step S10, the above method further comprises:

[0045] In the case where the vehicle charging gun is inserted into the charging pile, according to the maximum output current value in the initial message of the charging pile and the request current value of the current vehicle charging gun, the charging request value of the current charging request is determined;

[0046] sending a charging request to the charging pile; wherein the charging request carries the determined charging request value.

[0047] In this embodiment, in the case of first charging, the charging request value is obtained using the following formula:

[0048] BCL(I)=Min(CML(I)-C,I 车端ECU )

[0049] Wherein, CML(I) is the maximum output current value in the initial message of the charging pile.

[0050] For example, the embodiment of the application records the peak value (CCS 电流Max ) of the charging request value in the abort message when the first charging is triggered in the vehicle electronic control unit ECU, and optimizes the charging request value for the second charging according to CCS 电流Max The charging request value for the second charging is CCS 电流Max -C, wherein C is the first step (a calibration value according to different vehicle models).

[0051] The specific algorithm is as follows:

[0052] The first charging request value: BCL(I)=Min(CML(I),I 车端ECU )

[0053] The second charging request value:

[0054] If the peak value of the second charging request value is still greater than the safety threshold of the charging pile, causing the charging to be suspended, the peak value of the second charging request value is subtracted by the first step size after the charging gun is reinserted, and then compared with the request current value of the third vehicle charging gun. The minimum value is selected as the charging request value carried by the third charging request. In this way, the algorithm of the Nth time is as follows:

[0055] The Nth charging request value is:

[0056] Until the peak value of the charging request value is less than the safety threshold of the charging pile, normal charging is stopped, and the loop ends.

[0057] Wherein, BCL(I) is the vehicle charging request value during charging;

[0058] CML(I) is the maximum output current value in the initial message of the charging pile;

[0059] CCS(I) is the peak value of the charging request value in the first charging suspension message;

[0060] CCS(I) is the peak value of the charging request value in the Nth charging suspension message;

[0061] C is the current value, which is the step size value of the next BCL request charging current reduction.

[0062] For example, the maximum charging capacity of a certain vehicle model is 250A, the CML(I) of a certain charging pile is 120A, the charging request value of the vehicle during the first charging is BCL(I)=120A, and then CCS(I)=120±A, A is the normal fluctuation range of the current. Due to the above reasons, the output current fluctuation value of the charging pile exceeds 120+A, the charging pile stops outputting current, the charging sends CST (charging stop charging reason description message), the vehicle ECU records CCS(I)=120+A, and this charging ends. The user unplugs the charging gun and reinserts the charging gun. The vehicle will request the minimum value of 120+A-C and 120 during the next charging. In this way, the iteration is performed until the charging is successful. Alternatively, before step S10, the method further comprises:

[0063] If the vehicle starts and the vehicle speed is greater than or equal to the calibration value without reinserting the charging gun into the charging pile, the step of determining the charging request value carried by the current charging request according to the peak value of the charging request value carried by the suspension message and the request current value of the current vehicle charging gun is stopped.

[0064] In this embodiment, if the user starts the vehicle and the vehicle speed is greater than or equal to the S value (calibrated value for each vehicle model) without reinserting the gun after the charging is stopped, the above method is exited, and the step of determining the charging request value carried by the current charging request according to the peak value of the charging request value carried by the stop message and the request current value of the current vehicle charging gun is stopped.

[0065] Optionally, after the step S10, the above method further comprises:

[0066] If the time interval between receiving the stop message and reinserting the charging gun into the charging pile is greater than t, the step of determining the charging request value carried by the current charging request according to the peak value of the charging request value carried by the stop message and the request current value of the current vehicle charging gun is stopped.

[0067] In this embodiment, if the user does not charge for more than t (t is a calibrated value) without reinserting the gun after the charging is stopped, the above logic is exited, and the step of determining the charging request value carried by the current charging request according to the peak value of the charging request value carried by the stop message and the request current value of the current vehicle charging gun is stopped.

[0068] As shown in the above method, in order to achieve the above purpose, the present application provides a device for improving charging compatibility, wherein the device is applied to a vehicle and comprises: Figure 2

[0069] The first receiving module 01 is configured to receive a stop message sent by the charging pile in the case that the vehicle charging gun is inserted into the charging pile, and the charging is stopped, wherein the stop message carries the peak value of the charging request value of the current charging request;

[0070] The first determining module 02 is configured to determine the charging request value carried by the current charging request according to the peak value of the charging request value carried by the stop message and the request current value of the current vehicle charging gun in the case that the vehicle charging gun is reinserted into the charging pile.

[0071] The first sending module 03 is configured to send a charging request carrying the determined charging request value.

[0072] In this embodiment, the last time the charging method is used to improve the compatibility of the second charging. At present, the compatibility improvement is generally used in the single charging process. The present scheme uses a multi-data fusion scheme to record the last charging parameters for reference in the next charging, so as to improve the charging compatibility.

[0073] Optionally, the device, wherein the first determining module 02 comprises:

[0074] ​The first computing unit is configured to subtract a first step length from a peak value of the charging request value carried in the suspension message to obtain a preselected current value.

[0075] The first processing unit is configured to select a minimum value between the preselected current value and a current charging gun request current value as a charging request value carried in a current charging request.

[0076] Optionally, the apparatus, wherein the first receiving module 01 comprises:

[0077] The first determining unit is configured to determine a charging request value of a current charging request according to a maximum output current value in the initial message of the charging pile and a current charging gun request current value when the vehicle charging gun is inserted into the charging pile.

[0078] The first sending unit is configured to send a charging request to the charging pile, wherein the charging request carries the determined charging request value.

[0079] Optionally, the apparatus, wherein the first receiving module 01 further comprises:

[0080] The second processing unit is configured to stop the step of determining the charging request value carried in the current charging request according to the peak value of the charging request value carried in the suspension message and the current charging gun request current value if the vehicle is started and the vehicle speed is greater than or equal to a specified value when the charging gun is not reinserted into the charging pile.

[0081] Optionally, the method, wherein the first receiving module 01 further comprises:

[0082] The third processing unit is configured to stop the step of determining the charging request value carried in the current charging request according to the peak value of the charging request value carried in the suspension message and the current charging gun request current value if the time interval between the reception of the suspension message and the reinsertion of the charging gun into the charging pile is greater than t.

[0083] To achieve the above purpose, the application provides a network device for improving charging compatibility, which is applied to a vehicle and comprises a memory, a transceiver and a processor:

[0084] The memory is configured to store a computer program.

[0085] The transceiver is configured to transceive data under the control of the processor.

[0086] The processor is configured to read the computer program in the memory and execute the method for improving charging compatibility as described above.

[0087] It should be noted that the above device provided by the embodiments of the present application can realize all the method steps achieved by the method embodiments and achieve the same technical effects, and the same parts and beneficial effects of the method embodiments in the present embodiment will not be described in detail.

[0088] Obviously, various modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the claims and their equivalents, the present application can be practiced otherwise than as specifically described.

Claims

1. A method of enhancing charging compatibility, characterized by, The method is applied to a vehicle and comprises the following steps: In the case that the vehicle charging gun is inserted into the charging pile, an abort message sent by the charging pile is received, and charging is aborted; wherein the abort message carries a peak value of a charging request value of this charging request; In the case that the vehicle charging gun is reinserted into the charging pile, the charging request value carried by this charging request is determined according to the peak value of the charging request value carried by the abort message and a request current value of the vehicle charging gun this time; A charging request carrying the determined charging request value is sent; The determination of the charging request value carried by this charging request according to the peak value of the charging request value carried by the abort message and the request current value of the vehicle charging gun this time comprises the following steps: The peak value of the charging request value carried by the abort message is reduced by a first step to obtain a preselected current value; The minimum value between the preselected current value and the request current value of the vehicle charging gun this time is selected as the charging request value carried by this charging request.

2. The method of claim 1, wherein, Before the step of receiving the abort message sent by the charging pile, the method further comprises the following steps: In the case that the vehicle charging gun is inserted into the charging pile, a charging request value of this charging request is determined according to a maximum output current value in the initial message of the charging pile and a request current value of the vehicle charging gun this time; The charging request carrying the determined charging request value is sent to the charging pile.

3. The method of claim 1, wherein, After the step of receiving the abort message sent by the charging pile, the method further comprises the following steps: In the case that the vehicle charging gun is not reinserted into the charging pile, if the vehicle is started and the vehicle speed is greater than or equal to a specified value, the step of determining the charging request value carried by this charging request according to the peak value of the charging request value carried by the abort message and the request current value of the vehicle charging gun this time is stopped.

4. The method of claim 1, wherein, After the step of receiving the abort message sent by the charging pile, the method further comprises the following steps: If the time interval between the reception of the abort message and the reinsertion of the charging gun into the charging pile is greater than t, the step of determining the charging request value carried by this charging request according to the peak value of the charging request value carried by the abort message and the request current value of the vehicle charging gun this time is stopped.

5. An apparatus for enhancing charging compatibility, the apparatus comprising: The device is applied to a vehicle and comprises the following modules: A first receiving module is configured to receive an abort message sent by the charging pile in the case that the vehicle charging gun is inserted into the charging pile, and charging is aborted; wherein the abort message carries a peak value of a charging request value of this charging request; A first determining module is configured to determine the charging request value carried by this charging request according to the peak value of the charging request value carried by the abort message and a request current value of the vehicle charging gun this time in the case that the vehicle charging gun is reinserted into the charging pile; A first sending module is configured to send a charging request carrying the determined charging request value; The first determining module comprises the following units: A first calculating unit is configured to reduce the peak value of the charging request value carried by the abort message by a first step to obtain a preselected current value; A first processing unit is configured to select the minimum value between the preselected current value and the request current value of the vehicle charging gun this time as the charging request value carried by this charging request.

6. A network device for enhancing charging compatibility, characterized by, The application is applied to a vehicle, comprising a memory, a transceiver and a processor: a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and executing the method for improving charging compatibility as claimed in any one of claims 1 to 4.

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