Vehicle charging method, device, apparatus and vehicle

Abstract

The application relates to the field of intelligent vehicles and provides a vehicle charging method, a vehicle charging device, a vehicle charging equipment and a vehicle. The method comprises the following steps: applying for charging from a target charging pile according to a current request value, obtaining a pile end output current value provided by the target charging pile to the current vehicle, wherein the current request value is less than a maximum current output value of the target charging pile; in response to the current request value and the pile end output current value meeting preset charging adjustment conditions, updating a gain multiplication factor coefficient of the current request value, and adjusting the current request value according to the updated gain multiplication factor coefficient; and reapplying for charging from the target charging pile according to the adjusted current request value. The technical scheme adjusts the output state of the charging pile, makes the charging pile increase the output of the charging current in response to the increased current request value, thereby releasing the charging capacity of the charging pile, the increase of the charging current shortens the charging time of the user for the vehicle, improves the charging efficiency of the vehicle, and further improves the charging experience of the user.

Description

TECHNICAL FIELD

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

[0002] With the development of vehicle manufacturing technology and social demand, new energy vehicles are favored by more and more users due to their energy saving, economic applicability and other advantages. In order to facilitate the charging of new energy vehicles, especially electric vehicles, common charging piles are set up in many public places, and vehicles can be connected to the charging piles through charging guns for energy supplement.

[0003] Currently, during the charging process using the charging pile, occasionally the charging pile does not output according to the charging capacity, which may be caused by simultaneous charging of multiple vehicles leading to current drop output at the pile end, or failure of the charging pile to normally output current, resulting in poor charging efficiency of the vehicle. SUMMARY

[0004] Therefore, the present application aims to provide a vehicle charging method, device, equipment and vehicle to solve the problem of poor charging efficiency caused by the charging pile not outputting according to the charging capacity.

[0005] To achieve the above purpose, the present application provides a vehicle charging method, which comprises:

[0006] applying for charging from the target charging pile according to a current request value, to obtain a pile end output current value provided by the target charging pile to the current vehicle; wherein the current request value is less than a maximum current output value of the target charging pile;

[0007] in response to the current request value and the pile end output current value meeting a preset charging adjustment condition, updating a gain multiplier coefficient of the current request value, and adjusting the current request value according to the updated gain multiplier coefficient;

[0008] reapplying for charging from the target charging pile according to the adjusted current request value.

[0009] To achieve the same purpose, the present application also provides a vehicle charging device, which comprises:

[0010] a charging application module, configured to apply for charging from the target charging pile according to a current request value, to obtain a pile end output current value provided by the target charging pile to the current vehicle; wherein the current request value is less than a maximum current output value of the target charging pile;

[0011] a multiplier adjustment module, configured to update a gain multiplier coefficient of the current request value in response to the current request value and the pile end output current value meeting a preset charging adjustment condition, and to adjust the current request value according to the updated gain multiplier coefficient;

[0012] The re-application module is configured to re-apply for charging from the target charging pile according to the adjusted current request value.

[0013] For the same purpose, the present application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method provided in any of the embodiments of the present application.

[0014] For the same purpose, the present application further provides a vehicle, comprising:

[0015] a memory configured to store executable program code;

[0016] a processor configured to call and run the executable program code from the memory, so that the vehicle executes the method provided in any of the embodiments of the present application.

[0017] As can be seen from the above, the technical scheme of the embodiments of the present application applies for charging from the target charging pile according to the current request value, obtains the pile-end output current value provided by the target charging pile to the current vehicle, applies for the current from the target charging pile to stimulate the target charging pile to call its charging output capability to provide electric energy for the vehicle; in response to the current request value and the pile-end output current value meeting the preset charging adjustment condition, the gain multiplier coefficient of the current request value is updated, and the current request value is increased according to the updated gain multiplier coefficient; re-applying for charging from the target charging pile according to the adjusted current request value, appropriately increasing the current request value can adjust the output state of the charging pile, so that the charging pile responds to the increased current request value to increase the output of the charging current, thereby releasing the charging capability of the charging pile, and the increase of the charging current also shortens the time for the user to charge the vehicle, improves the efficiency of the vehicle charging, and further improves the charging experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application or related art, the following will briefly introduce the drawings needed to be used in the embodiments or related art descriptions. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0019] Figure 1 a flowchart of a vehicle charging method provided by an embodiment of the present application;

[0020] Figure 2 a structural schematic diagram of a vehicle charging device provided by an embodiment of the present application;

[0021] Figure 3 a structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to specific embodiments and drawings.

[0023] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the embodiments of the present application should be understood as their common meanings to those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the embodiments of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include", "contain" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like only represent relative positional relationships, which can change accordingly when the absolute positions of the described objects change.

[0024] Before the embodiments and implementations of the application are described, the problems in the prior art will be briefly introduced. During the charging of a vehicle, the charging pile occasionally does not output according to its charging capacity. One case is that multiple vehicles are charging at the same time, resulting in a reduced current output at the pile end. Another case is that the charging pile itself is faulty, resulting in a reduced current output at the pile end. For example, the maximum output current of a charging pile is 300A. During the charging phase, the vehicle applies for a current of 150A to the charging pile, but the actual current at the pile end can only be output as 100A. The actual charging current is small, resulting in a longer charging time for the user and a reduced charging efficiency. Therefore, the following vehicle charging method is proposed to improve the efficiency of vehicle charging.

[0025] Figure 1 A vehicle charging method provided by the embodiments of the present application can be applied to the case where a vehicle charges by using a charging pile. The vehicle charging method provided by the embodiments of the present application can be executed by a vehicle charging device, which can be integrated in an electronic device in the form of hardware and / or software, such as in a vehicle controller. Referring to Figure 1 The method provided by the embodiments of the present application includes the following steps:

[0026] S110, applying for charging to a target charging pile according to a current request value, and obtaining a pile end output current value provided by the target charging pile to the current vehicle; wherein the current request value is less than the maximum current output value of the target charging pile.

[0027] The current request value can be a charging current value expected by a current vehicle to be charged from a target charging pile. The target charging pile can be any charging pile connected to the current vehicle and providing electric energy to the current vehicle. The pile-end output current value can be an actual current value provided by the target charging pile to the vehicle in response to the charging request of the vehicle. It should be noted that the current request value needs to be less than the current output maximum value of the target charging pile. It can be understood that if the current output maximum value of the target charging pile is less than the current request value of the vehicle to the target charging pile, the current output maximum value of the target charging pile can be directly used to charge the vehicle. When the current request value of the vehicle is less than the current output maximum value of the target charging pile, the target charging pile applies for the current according to the current request value, and the target charging pile outputs the current to the vehicle in response to the current request value. It should be noted that the charging pile output current needs a reaction time, and at this time, the pile-end output current value can not be the same as the current request value.

[0028] S120, in response to the current request value and the pile-end output current value meeting a preset charging adjustment condition, updating a gain multiple coefficient of the current request value, and adjusting the current request value according to the updated gain multiple coefficient.

[0029] The charging adjustment condition can be a judgment condition for increasing the current request value. For example, the charging adjustment condition can be that the size relationship between the current request value and the pile-end output current value meets a certain constraint condition. The gain multiple coefficient can be a coefficient for increasing the current request value, for example, the gain multiple coefficient can be 1 in an initial condition, and the current request value is adjusted to be larger by increasing the gain multiple coefficient subsequently.

[0030] For example, when the pile-end output current value is less than the current request value (equivalent to the target charging pile not exerting charging capacity and timely supplying the current required by the vehicle), the gain multiple coefficient of the current request value is increased, the increased gain multiple coefficient is multiplied by the original current request value, and the increased current request value is obtained.

[0031] S130, reapplying for charging to the target charging pile according to the adjusted current request value.

[0032] After increasing the current request value, the target charging pile is re-applied for charging, which aims to trigger the target charging pile to respond to the increased current request value, to increase the current output of the charging pile itself and release the charging capacity of the target charging pile.

[0033] The technical scheme of the embodiment of the present application applies for charging to the target charging pile according to the current request value, obtains the pile end output current value provided by the target charging pile to the current vehicle, applies for current excitation to the target charging pile to call the charging output capability of the target charging pile itself to provide electric energy for the vehicle; in response to the current request value and the pile end output current value meeting the preset charging adjustment condition, updating the gain multiplication factor coefficient of the current request value, and adjusting (increasing) the current request value according to the updated gain multiplication factor coefficient; reapplying for charging to the target charging pile according to the adjusted (increased) current request value, appropriately increasing the current request value, which can adjust the output state of the charging pile, so that the charging pile increases the output of the charging current in response to the increased current request value, thereby releasing the charging capability of the charging pile, and meanwhile the increase of the charging current also shortens the charging time of the user for the vehicle, improves the charging efficiency of the vehicle, and further improves the charging experience of the user.

[0034] In order to excite the charging pile to release the charging capability, the current request value of the current vehicle can be constantly changing, but the initial value of the current request value needs to be defined and processed when the vehicle is just connected to the charging pile. Therefore, in an optional implementation manner, the current request value includes an initial current request value.

[0035] Correspondingly, the updating of the gain multiplication factor coefficient of the current request value in S120 in response to the current request value and the pile end output current value meeting the preset charging adjustment condition can include:

[0036] A1, in response to the duration that the pile end output current value is less than or equal to the preset multiplication factor of the initial current request value meeting the first preset duration, and the pile end output current value being greater than the preset current threshold value, and the initial current request value being less than or equal to the preset multiplication factor of the maximum current output value of the target charging pile, determining the multiplication increase value of the gain multiplication factor coefficient.

[0037] The initial current request value can be the current request value confirmed after the vehicle is just connected to the charging pile, that is, the current request value when applying for charging to the target charging pile for the first time. The initial current value can be set by a related technical person according to the vehicle type, the battery pack type, etc., or the initial current request value can be calculated by detecting the operating state parameters (such as temperature, remaining power, etc.) of the vehicle battery pack, and the present embodiment does not limit this.

[0038] The first preset time length and the preset current threshold can be the judgment condition of the pile end output current fed back by the target charging pile in response to the initial current request value. The first preset time length and the preset current threshold can be set by a large number of tests or artificial experience by a person skilled in the art, for example, the first preset time length can be set to 10s, and the preset current threshold can be set to 100A, and the embodiments of the present application do not limit this. The rate increase value can be an increase amount of the gain rate coefficient, used to adjust the increase of the current request value, and the rate increase value can be determined according to the difference between the pile end output current value and the current request value, or can be set to a fixed value, for example, 0.05.

[0039] For example, when the pile end output current value is less than or equal to 0.8 times the initial current request value for more than 10s, the pile end output current value is greater than 100A, and the initial current request value is less than or equal to 0.8 times the maximum current output value of the target charging pile, it is determined that the current request value of the vehicle needs to be increased, and therefore the rate increase value is determined. Assuming that the rate increase value is a fixed value of 0.05.

[0040] A2, add the current gain rate coefficient to the rate increase value to obtain an updated gain rate coefficient.

[0041] The current gain rate coefficient is actually the initial gain rate coefficient 1, and after adding the rate increase value determined in the foregoing embodiment, an adjusted gain rate coefficient is obtained. Continuing the previous example, the rate increase value is 0.05, and after adding the current gain rate coefficient, it becomes 1.05. Correspondingly, the increased gain rate coefficient is multiplied by the initial current request value to obtain an increased current request value, and the target charging pile is re-applied for current with the increased current request value.

[0042] It can be understood that if the target charging pile has a larger charging capacity, the current requested by the vehicle to the pile end is also within the maximum current output capacity of the pile end, but the current output by the pile end to the battery pack is still less than the current request value of the vehicle to the pile end, and this state lasts for a certain time. Then it is indicated that the current request value can be continuously increased to prompt the target charging pile to respond to the increase of the current request value and increase the current output to the vehicle battery pack.

[0043] In the above embodiments, the relationship between the pile end output current value and the initial current request value, and the initial current request value and the maximum current output value of the pile end are checked by a series of preset conditions. In the case of meeting these conditions, the current request value is allowed to be increased, which can help the vehicle to accurately judge whether the target charging pile releases the charging capacity for the vehicle to charge. In the case that the target charging pile can also increase the output capacity, the current request value is increased to prompt the target charging pile to respond and output more current to charge, saving the user's charging time and improving the charging efficiency. Of course, increasing the current request value by increasing the gain ratio coefficient is a relatively convenient and accurate way to increase the current request value. The fixed ratio increase value also makes the increase process of the current request value more stable.

[0044] In the foregoing embodiments, it is mentioned that the initial value of the current request value needs to be defined when the vehicle is connected to the charging pile. In an optional embodiment, the initial current request value is determined by the following method, which can include:

[0045] B1, obtaining the voltage, temperature and state of charge of the battery pack of the current vehicle, and the load consumption current value of the current vehicle.

[0046] Among them, the voltage of the battery pack can be the current charge and discharge voltage of the battery pack, the temperature can be the current cell temperature of the battery pack, and the state of charge (SOC) can be the available state of the remaining charge in the battery pack, that is, the proportion of the remaining charge to the rated total charge of the battery pack. The load consumption current value can be the current value consumed by the hardware devices that need to be turned on during the charging process of the current vehicle, such as the DC-DC converter, air conditioner or seat heating device of the vehicle, which must consume current during the charging process. The battery not only considers the remaining charge of the vehicle, but also enables the target charging pile to bear the current consumption of these loads. Of course, the voltage, temperature, charge state and load consumption of the battery pack can be directly obtained by the relevant sensors or detection devices inherent to the current vehicle.

[0047] B2, determining the theoretical charging current value of the current vehicle according to the voltage, temperature and state of charge.

[0048] Exemplarily, the corresponding theoretical charging current value can be inquired in the battery pack cell charging power table according to the voltage, the temperature and the state of charge. The cell charging power table can be used to record the maximum instantaneous current value that can be safely accepted by the battery during the charging process, that is, the maximum allowable peaking current (MAP). Since the performance of the battery is affected by factors such as voltage, temperature, SOC and the like, the corresponding maximum instantaneous current value of the battery pack under different voltages, temperatures and SOCs can be stored in the cell charging power table. Therefore, the corresponding theoretical charging current value is inquired in the cell charging power table according to the current voltage, temperature and state of charge of the vehicle battery pack.

[0049] B3, the sum of the theoretical charging current value and the load consumption current value is taken as the initial current request value.

[0050] In the foregoing, there are also necessary hardware devices consuming current during the charging of the vehicle. The load consumption current value is added to the theoretical charging current value obtained by table lookup in the foregoing step to obtain the initial current request value requested by the vehicle to the target charging pile for the first time when connecting to the target charging pile.

[0051] In the above embodiments, the maximum charging current that can be accepted by the battery pack is inquired in the cell charging power table based on the voltage, temperature and state of charge of the battery pack, and the initial current request value applied by the vehicle to the target charging pile for the first time is calculated in combination with the load still consuming power in the vehicle during charging. The charging working conditions and state of the vehicle battery pack are fully considered, and the load consumption situation is also considered. The initial current request value is accurately calculated, so that the target charging pile is applied for charging, the accuracy of the charging application is ensured, the corresponding current provided by the target charging pile is accurately excited, the charging demand of the vehicle is met, and the efficiency of the vehicle charging is ensured.

[0052] The above two embodiments introduce the definition and processing process of the initial current request value. When the target charging pile responds to the initial current request value and cannot meet the initial current, the current request value is increased to prompt the target charging pile to provide greater current. In an optional embodiment, the method can further include:

[0053] C1, in response to the duration that the pile end output current value is greater than the preset multiple of the increased current request value meeting the second preset duration, the initial current request value is re-determined.

[0054] The second preset time length can be a determination condition for the pile end output current value and the increased current request value, which is equivalent to a determination of a state in which the pile end output current value is greater than the preset multiple of the increased current request value. Of course, the second preset time length and the preset multiple can be set by a relevant technical person according to a large number of tests or actual conditions, for example, the second preset time length can be 3s, and the preset multiple can be 0.8 times, and the present application does not limit this. The process of re-determining the initial current request value can refer to the re-determination of the theoretical charging current value according to the voltage, temperature, state of charge and the like of the battery pack in the foregoing embodiments, and then the initial current request value is determined in combination with the load consumption current value.

[0055] It can be understood that if the current request value is increased by adjusting the multiple increase value, the target charging pile starts to respond to the request current of the vehicle, and this state lasts for a certain time length, it can be judged that the charging state of the charging pile has returned to the normal state, at this time the charging pile has started to charge the vehicle, and the voltage, temperature and SOC and the like of the battery pack are different from those when no charging is performed, and then the current request value can be calculated according to the state of the battery pack at this time.

[0056] For example, when the time length during which the pile end output current value is greater than 0.8 times the increased current request value exceeds 3s, it indicates that the charging state of the target charging pile returns to normal, its charging performance is released, and it can try to charge the vehicle, then the current request value is recalculated according to the current working conditions of the vehicle battery pack, and the current is applied to the target charging pile.

[0057] C2, applying for charging to the target charging pile according to the re-determined initial current request value.

[0058] Applying for charging to the target charging pile according to the initial current request value recalculated in the foregoing steps.

[0059] In the above embodiments, after the current request value is increased, it is continuously determined whether the pile end output current can reach a certain standard, so as to determine whether the target charging pile returns to the normal current output working state, and then the initial current request value is re-applied to the target charging pile, expecting the target charging pile to charge according to the demand of the vehicle battery pack, thus providing a feasible judgment scheme for the state recovery of the charging pile, and in the case that the working conditions of the battery pack change during charging, the initial current request value is re-determined to ensure that the expected charging current of the vehicle battery pack meets its own working conditions, and the rationality and charging efficiency of the charging can be ensured.

[0060] In addition to the above definition and processing of the initial current request value, in the process of subsequent current request adjustment, the target charging pile may not be able to recover to the normal working state in time, and the gain multiplier coefficient can be continuously increased to adjust the current request value, so as to prompt the target charging pile to increase its current output in the face of continuously increasing current request value. In an optional embodiment, the gain multiplier coefficient can be updated in response to the current request value and the pile end output current value meeting the preset charging adjustment condition, which can include:

[0061] D1, in response to the duration that the pile end output current value is less than or equal to the preset multiple of the current request value meeting the third preset duration, determining the multiple increase value of the gain multiplier coefficient.

[0062] Among them, the third preset duration can be a judgment condition between the pile end output current value and the current request value in the process of adjusting the current request value, which is equivalent to the judgment of the state that the pile end output current value is less than or equal to the preset multiple of the current request value. Of course, the third preset duration and the preset multiple can be set by the relevant technical personnel according to a large number of experiments or actual conditions, for example, the third preset duration can be the same as the second preset duration mentioned above, which is 3s, or it can be different from the second preset duration, for example, 4s, and the preset multiple can be 0.8 times, etc. The embodiments of the present application do not limit this.

[0063] It can be understood that if the output current provided by the target charging pile still does not reach the expected output standard after increasing the current request value, the current request value can be continuously increased, and the way to increase the current request value can also be controlled by increasing the gain multiplier coefficient. Therefore, when the duration that the pile end output current value is less than or equal to the preset multiple of the current request value meets the third preset duration, the gain multiplier coefficient is continuously increased by the multiple increase value. It should be noted that the multiple increase value and the multiple increase value involved in the above can be the same principle, so a fixed multiple increase value can be selected, for example, 0.05.

[0064] D2, adding the current gain multiplier coefficient and the multiple increase value to obtain the updated gain multiplier coefficient.

[0065] On the basis of the current gain multiplier coefficient, the multiple increase value is added to obtain the increased gain multiplier coefficient, so as to adjust the current request value to continue to increase.

[0066] For example, during the charging process, if the duration that the pile end output current value is less than or equal to 0.8 times the current request value is more than 3s, it indicates that the charging pile has not returned to the normal working state and temporarily cannot output the expected current. At this time, the gain multiplier coefficient is increased. If the current gain multiplier coefficient is 1.05, it is increased to 1.1. Then the adjusted current request value is 1.1 times the previous one. The current request value is continuously applied to the target charging pile. Then it is continuously judged whether the pile end output current value meets the expectation. If the pile end output current value is still less than or equal to 0.8 times the current request value for more than 3s, it indicates that the charging pile has not returned to the normal working state. The gain multiplier coefficient is continuously increased to 1.15. The current request value is applied to the target charging pile. In this way, the gain multiplier coefficient can be increased to 1.2, 1.25, etc.

[0067] In the above embodiment, during the adjustment of the current request value, if it is found that the pile end current output value still does not reach the expected state close to the current request value, the current request value can be continuously increased. The gain multiplier coefficient is increased in steps to promote the target charging pile to increase the current output capability as much as possible to meet the charging demand of the vehicle. A feasible solution is provided for the increase adjustment of the current request value to continuously promote the charging pile to restore its charging capability.

[0068] In the foregoing embodiment, the process of increasing the current request value is also not endless. In an optional embodiment, the method can further include: in response to the gain multiplier coefficient being increased to a preset maximum multiplier coefficient, the duration that the pile end output current value is less than or equal to the preset ratio of the current request value meets the third preset duration, generating pile end fault information of the target charging pile.

[0069] The maximum multiplier coefficient can be the maximum value of the gain multiplier coefficient, that is, the gain multiplier coefficient is not increased after being increased to the maximum multiplier coefficient. Correspondingly, during the adjustment of the current request value, if the gain multiplier coefficient is adjusted to the maximum multiplier coefficient, and the pile end output current value is still less than or equal to the preset ratio of the current request value, and the duration of this state meets the third preset duration, it can be determined that the target charging pile cannot restore its charging capability and cannot provide the expected charging current to the vehicle, that is, it cannot meet the charging demand of the vehicle. Therefore, the current vehicle can generate pile end fault information through the vehicle machine to indicate that the target charging pile has a fault problem.

[0070] For example, continuing the previous example, assuming that the maximum multiplication factor is 1.25, when the gain multiplication factor is increased to 1.25, the initial current request value of 1.25 times is taken as the current current request value applied to the target charging pile, and the vehicle receives the pile end current output value provided by the target charging pile at this time and compares it with the current request value at this time. If it is found that the pile end current output value is still insufficient for 80% (i.e., 0.8 times) of the current request value, and the insufficient state lasts more than 3 seconds, it is determined that the target charging pile has failed and cannot restore the charging capacity, and cannot meet the current vehicle's charging demand, and generates a response pile end fault information provided to the user of the vehicle.

[0071] In the above embodiment, after the current request value is adjusted to a certain extent, it cannot be increased any more, at which time it is determined whether the state of the pile end output current can meet the vehicle's charging demand, and further determines whether the target charging pile is faulty, so that the problem of insufficient charging capacity of the charging pile can be found in time.

[0072] Further, after the pile end fault information of the target charging pile is generated, the method can further include: displaying the pile end fault information through the human-computer interaction device of the current vehicle, for prompting the user of the current vehicle to abandon the target charging pile and change the pile for charging.

[0073] Through the human-computer interaction device in the vehicle, for example, the vehicle machine displays the pile end fault information through animation and text in the picture, or prompts through the audio equipment in the vehicle, etc., prompting the user of the current vehicle that the target charging pile cannot meet the current vehicle's charging demand, and considering to change other charging piles for charging.

[0074] The user is timely reminded of the insufficient energy supply problem of the charging pile, which facilitates the user to timely consider to change other charging schemes, reduces the time wasted by the user in vehicle charging, and thus helps to improve the charging efficiency of the vehicle.

[0075] On the basis of the foregoing embodiments and embodiments, the present embodiment further provides an actual example, in which, when the vehicle is charging, the charging pile does not output according to its charging capacity, under the premise of ensuring that the battery is not overcharged and does not report a large charging current, the charging request current is gradually increased to promote the pile end to output more current. At the same time, the charging pile is continuously charged with a small current to provide a warning and timely prompt the customer to change the pile for charging, thereby improving the user's charging experience, as follows.

[0076] In the direct current charging parameter configuration stage, it is assumed that the maximum output current value of the pile end obtained by the vehicle end is I1;

[0077] When the vehicle is connected to the charging pile for charging, the vehicle queries the battery charging MAP table according to the current SOC, voltage and temperature of the battery pack and other working conditions to obtain a MAP current value. In addition, the current value of the current consumed by the current load (the load can include a DC-DC converter, an air conditioner and a heating film, etc.) is set as I2.

[0078] During the charging process, the vehicle requests the current value I3=(I1, I2)min from the pile end, that is, the smaller one of the two, and at the same time, it is assumed that the current value I4 output by the pile end to the battery pack.

[0079] It should be noted that the current request value of the vehicle to the pile end should be within the maximum current output capability of the pile end. If the current request value of the vehicle to the pile end is greater than the maximum current output capability of the pile end, the pile end can output the current according to the maximum current output capability.

[0080] Therefore, the following situations can occur during the charging of the vehicle:

[0081] (1) I4≤I3×0.8 lasts for 10 s, and I4>100 A, and &I3≤I1×0.8. This condition mainly excludes the accuracy problem of the current output by the pile end in the case of small current charging. If the target charging pile has a large charging capability, the current request value of the vehicle to the pile end is also within the maximum current output capability of the pile end, but the current value output by the pile end to the battery pack is still less than the current request value of the vehicle to the pile end, and lasts for a certain period of time.

[0082] At this time, the current request value is adjusted to I3'=I3×△I, and △I is a gain ratio coefficient, which changes from 1 to 1.05. Since then, the current request value is gradually increased, so that the pile end responds to the change of the request current and outputs more current to the vehicle to meet the charging request of the vehicle.

[0083] The △I change coefficient changes from 1.05 to 1.25, and 1.25 is the maximum value of the gain ratio coefficient for judging the current output by the charging pile exceeding the current request of the vehicle. If the threshold is exceeded, the vehicle has the risk of overcharging, and the vehicle will report a fault of the charging current being too large, so the gain ratio coefficient is not increased any more after being controlled to 1.25.

[0084] (2) After adjusting the current request value, if I4≤I3×0.8 lasts for 3 s, then continue to adjust △I from 1.05 to 1.1, 1.15, 1.2 and 1.25 in a stepwise manner. If the current output by the pile end to the battery pack is still less than the initial current request value of the vehicle to the pile end after adjusting the current request value according to △I equal to 1.05 and lasting for a certain period of time, then the value of △I is continuously increased to continuously increase the current request value.

[0085] (3) When ΔI = 1.25, I4≤I3x0.8 still satisfies for 3s, if ΔI is adjusted to the maximum value, the pile end output current value to the battery pack is still less than the initial current request value of the vehicle to the pile end and lasts for a certain time, it can be determined that the pile end is abnormal and cannot meet the vehicle charging demand, and the customer is prompted by the in-vehicle machine or instrument interactive device to "the charging pile cannot output according to the maximum capacity, it is suggested to try to change the pile to charge". The user is prompted to give up the charging pile and change other charging scheme.

[0086] (4) If I4>I3x0.8 lasts for 3s during the adjustment of ΔI, the battery charging MAP table is queried according to the current SOC, voltage and temperature of the battery pack, the current demand of the vehicle for the charging current is recalculated, and the current is re-applied to the target charging pile. If the pile end starts to normally respond to the initial request current of the vehicle and lasts for a certain time through the adjustment of ΔI, it can be determined that the pile end has returned to normal, and then the vehicle can be restored to the initial current request value to continue the subsequent charging.

[0087] It should be noted that the method of the embodiments of the present application can be executed by a single device, such as a computer or a server. The method of the embodiments can also be applied to a distributed scenario, and completed by multiple devices cooperating with each other. In this distributed scenario, one of the multiple devices can only execute one or more steps in the method of the embodiments of the present application, and the multiple devices can interact with each other to complete the method.

[0088] It should be noted that some embodiments of the present application have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than the order described above and still achieve desirable results. In addition, the processes depicted in the figures do not necessarily require the particular order shown or sequential order to achieve the desired results. In certain implementations, multitasking and parallel processing can be advantageous.

[0089] Based on the same inventive concept, the present application also provides a vehicle charging device corresponding to any of the above-mentioned embodiment methods.

[0090] Figure 2 A structural schematic diagram of a vehicle charging device provided by the embodiments of the present application is shown in Figure 2 The vehicle charging device 200 includes an application charging module 210, a rate adjustment module 220 and a re-application module 230, wherein:

[0091] The application charging module 210 is configured to apply for charging from the target charging pile according to the current request value, and obtain a pile-end output current value provided by the target charging pile to the current vehicle, wherein the current request value is less than a maximum current output value of the target charging pile;

[0092] The ratio adjustment module 220 is configured to update a gain ratio coefficient of the current request value in response to the current request value and the pile-end output current value meeting a preset charging adjustment condition, and adjust the current request value according to the updated gain ratio coefficient.

[0093] The re-application module 230 is configured to re-apply for charging from the target charging pile according to the adjusted current request value.

[0094] The technical scheme of the embodiment of the application applies for charging from the target charging pile according to the current request value, obtains a pile-end output current value provided by the target charging pile to the current vehicle, applies for current from the target charging pile to stimulate the target charging pile to call its charging output capability, and provides electric energy for the vehicle; in response to the current request value and the pile-end output current value meeting a preset charging adjustment condition, a gain ratio coefficient of the current request value is updated, and the current request value is increased according to the updated gain ratio coefficient; the target charging pile is re-applied for charging according to the increased current request value, and the current request value is appropriately increased to adjust the output state of the charging pile, so that the charging pile increases the output of the charging current in response to the increased current request value, thereby releasing the charging capability of the charging pile. The increase of the charging current also shortens the charging time of the user for the vehicle, improves the charging efficiency of the vehicle, and further improves the charging experience of the user.

[0095] In an optional implementation, the current request value includes an initial current request value.

[0096] The ratio adjustment module 220 can include:

[0097] The initial current judgment unit is configured to determine a ratio increase value of the gain ratio coefficient in response to a duration that the pile-end output current value is less than or equal to a preset ratio of the initial current request value meeting a first preset duration, and the pile-end output current value being greater than a preset current threshold value, and the initial current request value being less than or equal to a preset ratio of the maximum current output value of the target charging pile.

[0098] The ratio coefficient updating unit is configured to add the current gain ratio coefficient and the ratio increase value to obtain the updated gain ratio coefficient.

[0099] In an optional implementation, the device 200 can further include an initial current determination module, and the initial current determination module can include:

[0100] a battery information acquisition unit configured to acquire a voltage, a temperature, and a state of charge of a battery pack of the current vehicle, and a load consumption current value of the current vehicle;

[0101] a theoretical current determination unit configured to determine a theoretical charging current value of the current vehicle according to the voltage, the temperature, and the state of charge;

[0102] an initial current determination unit configured to take a sum of the theoretical charging current value and the load consumption current value as an initial current request value.

[0103] In an optional implementation, the apparatus 200 can further include:

[0104] an initial current re-determination module configured to re-determine the initial current request value in response to a duration, during which the pile-end output current value is greater than the preset multiple of the increased current request value, meeting a second preset duration;

[0105] a re-application current module configured to apply for charging to the target charging pile according to the re-determined initial current request value.

[0106] In an optional implementation, the multiple adjustment module 220 can include:

[0107] an output current judgment unit configured to determine a multiple increase value of the gain multiple coefficient in response to a duration, during which the pile-end output current value is less than or equal to the preset multiple of the current request value, meeting a third preset duration;

[0108] a gain multiple update unit configured to add the current gain multiple coefficient and the multiple increase value to obtain an updated gain multiple coefficient.

[0109] In an optional implementation, the apparatus 200 can further include:

[0110] a fault judgment module configured to generate pile-end fault information of the target charging pile in response to a duration, during which the pile-end output current value is less than or equal to the preset multiple of the current request value, meeting the third preset duration when the gain multiple coefficient increases to a preset maximum multiple coefficient.

[0111] In an optional implementation, the fault judgment module can further include:

[0112] a pile change prompting unit configured to display the pile-end fault information through a human-computer interaction device of the current vehicle, to prompt a user of the current vehicle to abandon the target charging pile for pile change charging.

[0113] For the convenience of description, the above apparatus is described in various modules according to functions. Of course, the functions of the modules can be implemented in one or more software and / or hardware in the implementation of the present application.

[0114] The device of the above embodiments is used to implement the corresponding vehicle charging method in any of the preceding embodiments, and has the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0115] Based on the same inventive concept, the present application also provides an electronic device corresponding to the method of any of the above embodiments, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the vehicle charging method of any of the above embodiments when executing the program.

[0116] Figure 3 A structural schematic diagram of an electronic device provided by the embodiments of the present application is shown in FIG. 10. Figure 3 A specific electronic device hardware structure is shown, which can include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040 and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030 and the communication interface 1040 are connected to each other through the bus 1050 for communication within the device.

[0117] The processor 1010 can be implemented in the form of a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, etc., for executing related programs to implement the technical solutions provided by the embodiments of the present application.

[0118] The memory 1020 can be implemented in the form of a ROM (Read Only Memory), a RAM (Random Access Memory), a static storage device, a dynamic storage device, etc. The memory 1020 can store an operating system and other application programs, and when the technical solutions provided by the embodiments of the present application are implemented by software or firmware, the related program codes are stored in the memory 1020 and called and executed by the processor 1010.

[0119] The input / output interface 1030 is used to connect input / output modules to realize information input and output. The input / output modules can be configured as components in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. The input devices can include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output devices can include a display, a speaker, a vibrator, an indicator light, etc.

[0120] The communication interface 1040 is configured to connect a communication module (not shown in the figure) to realize the communication interaction between the device and other devices. The communication module can realize communication through wired mode (such as USB, network cable, etc.), or can realize communication through wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0121] The bus 1050 includes a path for transmitting information between various components (such as the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040) of the device.

[0122] It should be noted that although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040, and the bus 1050, in the specific implementation process, the device can also include other components necessary for normal operation. In addition, those skilled in the art can understand that the above device can also only contain the components necessary for the implementation of the embodiments of the present application, and does not have to contain all the components shown in the figure.

[0123] The electronic device of the above embodiment is used to realize the corresponding vehicle charging method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here.

[0124] Based on the same inventive concept, corresponding to the method of any of the above embodiments, the present application also provides a vehicle, which comprises:

[0125] a memory for storing executable program code;

[0126] a processor for calling and running the executable program code from the memory, so that the vehicle executes the method provided by any embodiment of the present application.

[0127] Based on the same inventive concept, corresponding to the method of any of the above embodiments, the present application also provides a non-transitory computer readable storage medium, which stores computer instructions for causing the computer to execute the vehicle charging method as described in any of the above embodiments.

[0128] The computer readable media of the embodiments can include permanent and non-permanent, removable and non-removable media, which can be implemented by any method or technology to store information. The information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage device, or any other non-transmission medium that can be used to store information accessible by a computing device.

[0129] The storage medium of the above embodiments stores computer instructions for causing the computer to perform the vehicle charging method as described in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here again.

[0130] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present application (including claims) is limited to these examples; the above embodiments or technical features between different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of the different aspects of the embodiments of the present application as described above. In order to be brief, they are not provided in detail.

[0131] In addition, in order to simplify the description and discussion, and so as not to make the embodiments of the present application difficult to understand, the well-known power / ground connections of integrated circuit (IC) chips and other components can or can not be shown in the provided drawings. In addition, the devices can be shown in the form of block diagrams in order to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented the embodiments of the present application (i.e. these details should be fully within the understanding of those skilled in the art). Where specific details (e.g. circuits) are set forth in order to describe the exemplary embodiments of the present application, it will be apparent to those skilled in the art that the embodiments of the present application can be implemented without these specific details or with variations of these specific details. Therefore, these descriptions should be considered illustrative rather than limiting.

[0132] While the present application has been described in connection with certain embodiments thereof, many modifications, substitutions, changes, and of forms will be apparent to those of ordinary skill in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) can use the embodiments discussed.

[0133] Embodiments of the present application are intended to cover all such alterations, modifications, and variations as they can come within the scope of the appended claims. Accordingly, although specific embodiments have been furthered in connection with the present application, any omission, substitution, change, improvement, etc. made by one of ordinary skill in the art to the disclosed embodiments should be considered to be within the scope of the present application.

Claims

1. A vehicle charging method, characterized in that, The method includes: The system requests charging from the target charging station according to the requested current value, and obtains the terminal output current value provided by the target charging station to the current vehicle; wherein, the requested current value is less than the maximum current output value of the target charging station. In response to the current request value and the pile terminal output current value meeting the preset charging adjustment conditions, the gain ratio coefficient of the current request value is updated, and the current request value is adjusted according to the updated gain ratio coefficient. The charging request should be resubmitted to the target charging station based on the adjusted current request value; The current request value includes an initial current request value; the step of updating the gain factor of the current request value in response to the current request value and the pile terminal output current value meeting preset charging adjustment conditions includes: In response to the fact that the duration of the time when the pile terminal output current value is less than or equal to the preset multiple of the initial current request value meets the first preset duration, and the pile terminal output current value is greater than the preset current threshold, and the initial current request value is less than or equal to the preset multiple of the maximum current output value of the target charging pile, it is determined that the target charging pile has the ability to increase current output, and the multiple increase value of the gain multiplier coefficient is determined. The current gain multiplier is added to the increase in the multiplier to obtain the updated gain multiplier.

2. The method according to claim 1, characterized in that, The initial current request value is determined by the following methods: The voltage, temperature, and state of charge of the battery pack of the current vehicle, as well as the load current consumption value of the current vehicle, are obtained. The theoretical charging current value of the current vehicle is determined based on the voltage, temperature, and state of charge. The sum of the theoretical charging current value and the load consumption current value is used as the initial current request value.

3. The method according to claim 2, characterized in that, The method further includes: In response to the fact that the duration for which the pile end output current value is greater than a preset multiple of the increased current request value meets a second preset duration, the initial current request value is re-determined; Apply for charging from the target charging station according to the newly determined initial current request value.

4. The method according to any one of claims 1-3, characterized in that, The step of updating the gain factor of the current request value in response to the current request value and the pile terminal output current value meeting preset charging adjustment conditions includes: In response to the duration for which the pile end output current value is less than or equal to the current request value by a preset multiple conforms to a third preset duration, the multiple increase value of the gain multiple coefficient is determined; The current gain multiplier is added to the increase in the multiplier to obtain the updated gain multiplier.

5. The method according to claim 4, characterized in that, The method further includes: When the gain ratio increases to a preset maximum ratio, the duration for which the output current value at the charging pile is less than or equal to the current request value by a preset ratio meets a third preset duration, and the charging pile terminal fault information of the target charging pile is generated.

6. The method according to claim 5, characterized in that, After generating the fault information at the end of the target charging pile, the method further includes: The fault information of the charging pile is displayed through the human-machine interaction device of the current vehicle, which prompts the user of the current vehicle to abandon the target charging pile and charge at another pile.

7. A vehicle charging device, characterized in that, The device includes: The charging request module is used to request charging from the target charging pile according to the current request value, and obtain the pile terminal output current value provided by the target charging pile to the current vehicle; wherein, the current request value is less than the maximum current output value of the target charging pile, and the current request value includes the initial current request value; The gain adjustment module is used to update the gain ratio coefficient of the current request value in response to the current request value and the pile terminal output current value meeting the preset charging adjustment conditions, and to adjust the current request value according to the updated gain ratio coefficient. The re-application module is used to re-apply for charging from the target charging pile based on the adjusted current request value. The gain adjustment module is further configured to, in response to a preset multiplier of the pile-end output current value being less than or equal to the initial current request value for a duration that conforms to a first preset duration, and the pile-end output current value being greater than a preset current threshold, and the initial current request value being less than or equal to a preset multiplier of the maximum current output value of the target charging pile, determine that the target charging pile has the ability to increase current output, and determine the multiplier increase value of the gain multiplier coefficient; add the current gain multiplier coefficient to the multiplier increase value to obtain the updated gain multiplier coefficient.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 1-6.

9. A vehicle, characterized in that, The vehicles include: Memory, used to store executable program code; A processor for calling and running the executable program code from the memory, causing the vehicle to perform the method as described in any one of claims 1-6.

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