Vehicle charging method, device and equipment and vehicle

Abstract

The invention relates to the field of intelligent vehicles, and provides a vehicle charging method, device and equipment and a vehicle. The method comprises the steps that charging is applied to a target charging pile according to a current request value, and a pile end output current value provided by the target charging pile for a current vehicle is obtained; wherein the current request value is smaller than the current output maximum value of the target charging pile; in response to the condition that the current request value and the pile end output current value meet a preset charging adjustment condition, updating a gain multiplying power coefficient of the current request value, and adjusting the current request value according to the updated gain multiplying power coefficient; and applying for charging from the target charging pile again according to the adjusted current request value. According to the technical scheme, the output state of the charging pile is adjusted, the charging pile responds to the increased current request value to improve the output of the charging current, so that the charging capacity of the charging pile is released, meanwhile, due to the improvement of the charging current, the time of a user for charging the vehicle is shortened, the vehicle charging efficiency is improved, and the charging experience of the user is improved.

Description

Technical Field

[0001] The present application relates to the field of smart vehicle technology, and in particular to a vehicle charging method, device, equipment and vehicle. Background Art

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

[0003] Currently, when using charging piles for charging, it is occasionally encountered that the charging piles do not output according to the charging capacity. It may be that multiple vehicles are charging at the same time, causing the current output at the pile end to be reduced, or the charging pile fails and cannot output current normally, resulting in poor vehicle charging efficiency. Summary of the invention

[0004] In view of this, the purpose of the present application is to propose 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] Based on the above purpose, the present application provides a vehicle charging method, the method comprising:

[0006] Apply for charging from the target charging pile according to the current request value, and obtain the 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;

[0007] 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 of the current request value, and adjusting the current request value according to the updated gain multiplication factor;

[0008] Re-apply for charging from the target charging pile based on the adjusted current request value.

[0009] Based on the same purpose, an embodiment of the present application also provides a vehicle charging device, the device comprising:

[0010] A charging application module is used to apply for charging from a target charging pile according to a 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 the 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 adjust the current request value according to the updated gain multiplier coefficient;

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

[0013] Based on the same purpose, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method provided in any embodiment of the present application when executing the program.

[0014] Based on the same purpose, the present application also provides a vehicle, the vehicle comprising:

[0015] A memory for storing executable program codes;

[0016] A processor is used to call and run the executable program code from the memory so that the vehicle executes the method provided in any embodiment of the present application.

[0017] From the above, it can be seen that the technical solution 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 to the target charging pile to stimulate the target charging pile to call its own charging output capacity to provide electrical energy for the vehicle; in response to the current request value and the pile-end output current value meeting the preset charging adjustment conditions, updates the gain multiplier coefficient of the current request value, and increases the current request value according to the updated gain multiplier coefficient; applies for charging to the target charging pile again according to the adjusted current request value, and appropriately increases the current request value, which can adjust the output state of the charging pile, so that the charging pile responds to the increased current request value and increases the output of the charging current, thereby releasing the charging capacity of the charging pile. At the same time, the increase in charging current also shortens the time for users to charge their vehicles, improves the efficiency of vehicle charging, and thereby improves the user's charging experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a vehicle charging method provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of a vehicle charging device provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0023] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Before explaining the application examples and implementation methods, a brief introduction to the problems in the prior art is first given. During vehicle charging, it is occasionally encountered that the charging pile does not output according to its charging capacity. One situation is that multiple vehicles are charged at the same time, resulting in a reduction in the output current at the pile end. Another situation is that the charging pile itself fails and causes the pile end to reduce the output current. For example, the maximum output current of a charging pile is 300A. During the charging stage, the vehicle applies for a current of 150A from the charging pile, but the actual current at the pile end can only output 100A. The actual charging current is small, resulting in a longer charging time for users and a decrease in 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 in an embodiment of the present application can be applied to the case where a vehicle is charged using a charging pile. The vehicle charging method provided in an embodiment of the present application can be performed by a vehicle charging device, which can be integrated into an electronic device by means of hardware and / or software, such as being integrated into a vehicle controller. Figure 1 , the method provided in the embodiment of the present application comprises the following steps:

[0026] S110, applying for charging from a target charging pile according to the 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 of the target charging pile.

[0027] Among them, the current request value can be the charging current value that the current vehicle in urgent need of charging expects the target charging pile to provide. The target charging pile can be any charging pile connected to the current vehicle and providing electrical energy to the current vehicle. The pile-end output current value can be the actual current value provided to the vehicle by the target charging pile in response to the vehicle's charging request. It should be noted that the current request value needs to be less than the maximum current output of the target charging pile. It can be understood that if the maximum current output that the target charging pile can provide is less than the current request value of the vehicle to the target charging pile, then the maximum current output of the target charging pile can be directly used to charge the vehicle. Then, when the current request value of the vehicle is less than the maximum current output of the target charging pile, the target charging pile first applies for charging current according to the current request value, and the target charging pile responds to the current request value to output current to the vehicle. It should be noted that the charging pile output current requires reaction time, and at this time the pile-end output current value may 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 the preset charging adjustment condition, updating the gain multiplication factor of the current request value, and adjusting the current request value according to the updated gain multiplication factor.

[0029] The charging adjustment condition may be a judgment condition for increasing the current request value. For example, the charging adjustment condition may be that the magnitude relationship between the current request value and the current value output by the pile end meets a certain constraint. The gain multiplier coefficient may be a coefficient according to which the current request value increases. For example, the gain multiplier coefficient may be 1 in the initial case, and the current request value may be adjusted to be larger by increasing the gain multiplier coefficient in the subsequent case.

[0030] Exemplarily, when the output current value at the charging pile end is less than the current request value (equivalent to the target charging pile failing to exert its charging capacity and supply the current required by the vehicle in a timely manner), the gain multiplier coefficient of the current request value is increased, and the increased gain multiplier coefficient is multiplied by the original current request value to obtain the increased current request value.

[0031] S130: Re-apply for charging from the target charging pile according to the adjusted current request value.

[0032] After increasing the current request value, charging is requested again from the target charging pile, with the aim of triggering the target charging pile to respond to the increased current request value, thereby increasing the current output of the charging pile itself and releasing the charging capacity of the target charging pile.

[0033] The technical solution of the embodiment of the present application is to apply for charging to the target charging pile according to the current request value, obtain the pile-end output current value provided by the target charging pile to the current vehicle, apply for current to the target charging pile to stimulate the target charging pile to call its own charging output capacity to provide electrical energy for the vehicle; in response to the current request value and the pile-end output current value meeting the preset charging adjustment conditions, update the gain multiplier coefficient of the current request value, and adjust (increase) the current request value according to the updated gain multiplier coefficient; apply for charging to the target charging pile again according to the adjusted (increased) current request value, and appropriately increase the current request value, so as to adjust the output state of the charging pile, so that the charging pile responds to the increased current request value and increases the output of the charging current, thereby releasing the charging capacity of the charging pile. At the same time, the increase in charging current also shortens the time for users to charge their vehicles, improves the efficiency of vehicle charging, and thus improves the user's charging experience.

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

[0035] Accordingly, 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 of the current request value in S120 may include:

[0036] A1. In response to the fact that the duration during which the output current value at the pile end is less than or equal to the preset multiple of the initial current request value meets the first preset duration, and the output current value at the pile end 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 of the target charging pile, determine the multiple increase value of the gain multiple coefficient.

[0037] The initial current request value may 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 may be set by relevant technicians according to the vehicle model, battery pack type, etc., or may be calculated by detecting the operating status parameters of the vehicle battery pack (such as temperature, remaining power, etc.), which is not limited in the embodiments of the present application.

[0038] The first preset duration and the preset current threshold can be the judgment conditions for the pile end output current fed back in response to the initial current request value of the target charging pile. The first preset duration and the preset current threshold can be set by relevant technical personnel through a large number of experiments or manual experience. For example, the first preset duration can be set to 10s, and the preset current threshold can be set to 100A. The embodiment of the present application does not limit this. The multiplier increase value can be the increase of the gain multiplier coefficient, which is used to adjust the increase of the current request value. The multiplier increase value can be determined according to the difference between the pile end output current value and the current request value, or a fixed value can be set, such as 0.05.

[0039] Exemplarily, when the time duration of the pile-end output current value being less than or equal to 0.8 times of the initial current request value exceeds 10s, and 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 of the maximum current output of the target charging pile, it is determined that the vehicle's current request value needs to be increased, and therefore the multiplier increase value is determined, assuming that the multiplier increase value is a fixed value of 0.05.

[0040] A2. Add the current gain multiplication factor to the multiplication increase value to obtain an updated gain multiplication factor.

[0041] The current gain multiplier is actually the initial gain multiplier of 1. After adding the multiplier increase value determined in the previous embodiment, the adjusted gain multiplier is obtained. Continuing with the previous example, the multiplier increase value is 0.05 at this time, which becomes 1.05 after adding the current gain multiplier. Accordingly, the increased gain multiplier is multiplied by the initial current request value to obtain the increased current request value, and the target charging pile is re-applied for current with the increased current request value.

[0042] It is understandable that if the target charging pile has a large 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 from 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 period of time, then it means that the current request value can continue to be increased, prompting the target charging pile to respond to the increase in the current request value and increase the current output to the vehicle battery pack.

[0043] In the above implementation, the relationship between the output current value of the pile end and the initial current request value, as well as the initial current request value and the maximum current output value of the pile end are verified through a series of preset conditions. When these conditions are met, the current request value is allowed to be increased, which can help the vehicle accurately judge whether the target charging pile releases the charging capacity to charge the vehicle. When the target charging pile can still increase the output capacity, the current request value is increased to prompt the target charging pile to respond and output a larger current for charging, saving the user's charging time and improving the charging efficiency. Of course, increasing the current request value by increasing the gain multiplier coefficient is a more convenient and accurate solution to increase the current request value, and the fixed multiplier increase value also makes the increase process of the current request value more stable.

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

[0045] B1. Obtain the voltage, temperature and state of charge of the battery pack of the current vehicle, as well as 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 power to the rated total power of the battery pack. The load consumption current value can be the current value consumed by the hardware devices that the current vehicle needs to turn on during the charging process. For example, during the charging process, the vehicle's DC-DC converter, air conditioning or seat heating and other equipment still need to be turned on, which will inevitably consume current. When charging the battery, not only the remaining power of the vehicle should be considered, but also the target charging pile should be able to bear the current consumption of these loads. Of course, information such as the voltage, temperature, charge state, and load consumption of the battery pack can be directly obtained through relevant sensors or detection devices inherent in the current vehicle.

[0047] B2. Determine the theoretical charging current value of the current vehicle based on voltage, temperature and state of charge.

[0048] Exemplarily, the corresponding theoretical charging current value can be queried in the battery cell charging power meter of the battery pack according to the voltage, temperature and state of charge. Among them, the battery cell charging power meter can be used to record the maximum instantaneous current value that the battery can safely accept during the charging process, that is, the maximum allowable current (Maximum Allowable Peaking Current, MAP). Since the performance of the battery is affected by factors such as voltage, temperature, and SOC, the battery cell charging power meter can store the maximum instantaneous current value corresponding to the battery pack under different voltages, temperatures, and SOCs. Therefore, according to the current voltage, temperature, and state of charge of the current vehicle battery pack, the corresponding theoretical charging current value is queried in the battery cell charging power meter.

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

[0050] The above content introduces that there are necessary hardware devices that consume current during vehicle charging. The current consumption values ​​of these loads are added to the theoretical charging current values ​​obtained by looking up the table in the above steps to obtain the initial current request value requested by the current vehicle to the target charging pile when it is first connected to the target charging pile.

[0051] In the above implementation, the maximum charging current that the battery pack can accept is queried in the battery cell charging power table based on the voltage, temperature and charge state of the battery pack, and the initial current application value that the vehicle applies to the target charging pile for the first time is calculated in combination with the load situation that is still consuming power in the vehicle during charging. The charging working conditions and status of the vehicle battery pack and the load situation that is consuming power are fully considered, and the initial current application value is accurately calculated to apply for charging to the target charging pile, thereby ensuring the accuracy of the charging application, so as to accurately stimulate the target charging pile to provide corresponding current, meet the charging needs of the vehicle, and ensure the efficiency of vehicle charging.

[0052] The above two implementations introduce the definition and processing of the initial current request value. When the target charging pile responds to the initial current request value and supplies power to the vehicle, but cannot meet the initial current, the current request value is increased to prompt the target charging pile to provide a larger current. Then, in an optional implementation, the method may further include:

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

[0054] Among them, the second preset time length can be a judgment condition between the output current value of the pile end and the increased current request value, which is equivalent to the judgment of the state that the output current value of the pile end 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 relevant technical personnel based on a large number of experiments or actual conditions. For example, the second preset time length can be 3s, the preset multiple can be 0.8 times, etc., and the embodiments of the present application do not limit this. The process of redetermining the initial current request value can refer to the aforementioned implementation method to redetermine the theoretical charging current value according to the voltage, temperature, state of charge, etc. of the battery pack, and then determine the initial current request value in combination with the load consumption current value.

[0055] It can be understood that if the current request value is increased by adjusting the multiplier increase value, the target charging pile begins to respond to the vehicle's request current, and this state lasts for a certain period of time, it can be judged that the charging state of the charging pile has returned to normal. At this time, the charging pile has started to charge the vehicle, and the working conditions of the battery pack such as voltage, temperature and SOC are different from when not charging. Then the current request value can be recalculated based on the state of the battery pack at this time.

[0056] For example, when the output current value at the pile end is greater than 0.8 times the increased current request value for more than 3 seconds, it means that the charging state of the target charging pile has returned to normal, its charging performance has been released, and it can try its best to charge the vehicle. Then, the current request value is recalculated according to the current working conditions of the vehicle battery pack, and current is requested from the target charging pile.

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

[0058] Apply for charging from the target charging pile according to the initial current request value recalculated in the previous step.

[0059] In the above implementation, after the current request value increases, it continues to be judged whether the output current of the pile end can reach a certain standard, so as to judge whether the target charging pile has recovered to the normal current output working state, and then re-apply the initial current request value to the target charging pile, expecting the target charging pile to charge according to the requirements of the vehicle battery pack. This provides a practical judgment scheme for the state recovery of the charging pile, and re-determines the initial current request value when the working conditions of the battery pack change during the charging process, so as to ensure that the charging current expected by the vehicle battery pack meets its own working conditions, and can ensure the rationality and efficiency of charging.

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

[0061] D1. In response to the fact that the duration during which 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, determine the multiple increase value of the gain multiple 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 of the pile end output current value being 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 relevant technical personnel based on a large number of experiments or actual conditions. For example, the third preset duration can be the same as the aforementioned second preset duration, which is 3s, or it can be different from the second preset duration, such as 4s, etc. The preset multiple can be 0.8 times, etc., and the embodiment of the present application does not limit this.

[0063] It is understandable that if the output current provided by the target charging pile still does not reach the desired output standard after increasing the current request value, then the current request value can continue to be increased, and the way to increase the current request value can also be controlled by increasing the gain multiplier coefficient. Therefore, when the duration of the preset multiplier of the output current value at the pile end is less than or equal to the current request value meets the third preset duration, the gain multiplier coefficient is continued to be increased by the multiplier increase value. It should be noted that the multiplier increase value and the multiplier increase value involved in the above text can be based on the same principle, so a fixed multiplier increase value can be selected, such as 0.05.

[0064] D2. Add the current gain multiplier coefficient to the multiplier increase value to obtain an updated gain multiplier coefficient.

[0065] On the basis of the current gain multiplication factor, the multiplication increase value is added to obtain the increased gain multiplication factor, thereby adjusting the current request value to continue to increase.

[0066] For example, during the charging process, if the output current value at the pile end is less than or equal to 0.8 times the current request value for more than 3s, it means that the charging pile has not recovered to the normal working state and cannot temporarily output the expected current. At this time, increase the gain multiplier coefficient. If the current gain multiplier coefficient is 1.05, increase it to 1.1. Then the adjusted current request value is 1.1 times the previous one. Continue to apply for current from the target charging pile, and then continue to determine whether the output current value at the pile end meets expectations. If the output current value at the pile end is still less than or equal to 0.8 times the current request value for more than 3s, it means that the charging pile has not recovered to the normal working state. Continue to increase the gain multiplier coefficient to 1.15, increase the current request value to apply for current from the target charging pile, and so on. The gain multiplier coefficient can increase to 1.2, 1.25, etc.

[0067] In the above implementation, during the adjustment of the current request value, if it is found that the current output value at the charging pile end still has not reached the expected state close to the current request value, the current request value can be further increased, and the gain multiplier coefficient can be increased in a step-by-step manner, so that the target charging pile can increase the current output capacity as much as possible to meet the charging needs of the vehicle, providing a practical solution for the increase and adjustment of the current request value, and continuously promoting the charging pile to restore its charging capacity.

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

[0069] Among them, the maximum multiplier coefficient can be the maximum value of the gain multiplier coefficient, that is, the gain multiplier coefficient will no longer increase after it is increased to the maximum multiplier coefficient. Correspondingly, in the process of adjusting the current request value, if the gain multiplier coefficient is adjusted to the maximum multiplier coefficient, the current value output by the pile end is still less than or equal to the preset multiplier of the current request value, and the duration of this state meets the third preset duration, then it can be determined that the target charging pile cannot restore its charging capacity and cannot provide the vehicle with the expected charging current, that is, it cannot meet the charging needs of the vehicle. Therefore, the current vehicle can generate pile end fault information through the vehicle computer to characterize the existence of a fault problem in the target charging pile.

[0070] Exemplarily, continuing with the previous example, assuming that the maximum multiplier is 1.25, when the gain multiplier increases to 1.25, 1.25 times the initial current request value is used as the current request value currently applied to the target charging pile. 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 less than 80% of the current request value (i.e. 0.8 times), and the insufficient state lasts for more than 3 seconds, then it is determined that the target charging pile has a fault and cannot restore the charging capacity and cannot meet the current charging needs of the vehicle. The response pile-end fault information is generated and provided to the user of the vehicle.

[0071] In the above implementation, after the current request value is adjusted to a certain level, it cannot continue to increase. At this time, it is judged whether the state of the current output by the pile end can meet the charging needs of the vehicle, and then whether the target charging pile is faulty, so that the problem of insufficient charging capacity of the charging pile can be discovered in time.

[0072] Furthermore, after generating the pile end fault information of the target charging pile, the method may further include: displaying the pile end fault information through a human-computer interaction device of the current vehicle to prompt the user of the current vehicle to abandon the target charging pile and change the charging pile.

[0073] Through the human-computer interaction equipment in the vehicle, such as the vehicle computer displaying the pile end fault information through animation and text on the screen, or voice prompts through the audio equipment in the car, etc., the user of the current vehicle is reminded that the target charging pile cannot meet the charging needs of the current vehicle and consider replacing other charging piles for charging.

[0074] Timely reminders of insufficient energy supply problems at charging piles can help users consider changing to other charging solutions in a timely manner, reducing the time users waste on charging their vehicles, thereby helping to improve vehicle charging efficiency.

[0075] On the basis of the above-mentioned embodiments and implementation methods, the embodiment of the present application also provides a practical example. When the vehicle is charging, if the charging pile does not output according to its charging capacity, the charging request current is gradually increased under the premise of ensuring that the battery is not overcharged and the charging current is not reported as excessive, so as to prompt the pile end to output more current. At the same time, it also warns the charging pile of continuous low current charging, prompts the customer to change the charging pile in time, and improves the user's charging experience, as follows.

[0076] In the DC charging parameter configuration stage, it is assumed that the maximum output current value of the charging pile 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 to obtain the MAP current value. In addition, the current load will also consume current (the load may include DC-DC converters, air conditioners and heating films, etc.), and the sum of the MAP current value and the load consumption current value is set to I2.

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

[0079] It should be noted that the current requested by the vehicle to the pile end must be within the maximum current output capacity of the pile end. If the current requested by the vehicle to the pile end is greater than the maximum current output capacity of the pile end, the pile end can output current according to its maximum current output capacity.

[0080] The following situations may occur during vehicle charging:

[0081] (1) I4≤I3×0.8 for 10s, and I4>100A, and &I3≤I1×0.8. The main problem with this condition is that when charging with a large current, the accuracy of the current output by the charging pile is eliminated when charging with a small current. If the target charging pile has a large charging capacity, the current request value from the vehicle to the charging pile is also within the maximum current output capacity of the charging pile, but the current value output by the charging pile to the battery pack is still less than the current value requested by the vehicle to the charging pile, and it lasts for a certain period of time.

[0082] At this time, the current request value is adjusted to I3'=I3×△I, where △I is the gain multiplier coefficient, changing from 1 to 1.05. From then on, the current request value is gradually increased in order to make the charging pile respond to the change in the requested current and output more current to the vehicle to meet the vehicle's charging request.

[0083] The △I variation coefficient changes from 1.05 to 1.25. 1.25 is the maximum value of the gain multiplier coefficient for judging whether the charging pile outputs current exceeding the vehicle's requested current. If this threshold is exceeded, the vehicle is at risk of overcharging and will report a charging current over-high fault. Therefore, the gain multiplier coefficient is controlled to grow to 1.25 and then no longer increases.

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

[0085] (3) When △I=1.25, I4≤I3×0.8 is still satisfied for 3s. If after △I is adjusted to the maximum value, the current value output by the charging pile to the battery pack is still less than the initial current request value of the vehicle to the charging pile and lasts for a certain period of time, it can be determined that the charging pile is abnormal and cannot meet the charging needs of the vehicle. The customer is prompted through the in-vehicle computer or instrument and other interactive devices that "the charging pile cannot output at its maximum capacity, it is recommended to try to charge with a different charging pile". The user is prompted to abandon the charging pile and switch to other charging solutions.

[0086] (4) During the adjustment of △I, if I4>I3×0.8 for 3s, the battery charging MAP table is queried according to the current SOC, voltage, temperature and other working conditions of the battery pack, and the current demand of the vehicle for charging current is recalculated, and the current is re-applied to the target charging pile. If the pile end begins to respond normally to the vehicle's initial request for current and lasts for a certain period of time after adjusting △I, it can be determined that the pile end has returned to normal, and the vehicle can be restored to the initial current request value to continue subsequent charging.

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

[0088] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

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

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

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

[0092] The multiplier adjustment module 220 is used to update the gain multiplier coefficient of the current request value in response to the current request value and the pile end output current value meeting the preset charging adjustment condition, and adjust the current request value according to the updated gain multiplier coefficient;

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

[0094] The technical solution of the embodiment of the present application is to apply for charging to the target charging pile according to the current request value, obtain the pile-end output current value provided by the target charging pile to the current vehicle, apply for current to the target charging pile to stimulate the target charging pile to call its own charging output capacity to provide electrical energy for the vehicle; in response to the current request value and the pile-end output current value meeting the preset charging adjustment conditions, update the gain multiplier coefficient of the current request value, and increase the current request value according to the updated gain multiplier coefficient; apply for charging to the target charging pile again according to the increased current request value, and appropriately increase the current request value, so as to adjust the output state of the charging pile, so that the charging pile responds to the increased current request value and increases the output of the charging current, thereby releasing the charging capacity of the charging pile. At the same time, the increase in charging current also shortens the time for users to charge their vehicles, improves the efficiency of vehicle charging, and thus improves the user's charging experience.

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

[0096] The magnification adjustment module 220 may include:

[0097] An initial current judgment unit, for determining a multiplier increase value of a gain multiplier coefficient in response to the fact that the duration during which the pile end output current value is less than or equal to the preset multiplier of the initial current request value meets the first preset duration, and the pile end output current value is greater than the preset current threshold, and the initial current request value is less than or equal to the preset multiplier of the current output maximum value of the target charging pile;

[0098] The multiplication factor updating unit is used to add the current gain multiplication factor to the multiplication increase value to obtain an updated gain multiplication factor.

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

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

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

[0102] The initial current determination unit is used to take the sum of the theoretical charging current value and the load consumption current value as the initial current request value.

[0103] In an optional implementation, the device 200 may further include:

[0104] An initial current redetermining module, configured to redetermine the initial current request value in response to the fact that the duration during which the pile end output current value is greater than the preset multiple of the increased current request value meets a second preset duration;

[0105] The current re-application module is used to apply for charging from the target charging pile according to the re-determined initial current request value.

[0106] In an optional implementation, the magnification adjustment module 220 may include:

[0107] An output current judgment unit, configured to determine a multiplication increase value of the gain multiplication factor in response to a time period during which the pile end output current value is less than or equal to the preset multiplication rate of the current request value conforming to a third preset time period;

[0108] The gain multiplication factor updating unit is used to add the current gain multiplication factor to the multiplication factor increase value to obtain an updated gain multiplication factor.

[0109] In an optional implementation, the device 200 may further include:

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

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

[0112] The charging pile replacement prompt unit is used to display the pile end fault information through the human-computer interaction device of the current vehicle, and to prompt the user of the current vehicle to abandon the target charging pile and replace the charging pile.

[0113] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

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

[0115] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the vehicle charging method described in any of the above embodiments is implemented.

[0116] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, Figure 3 A specific electronic device hardware structure is shown, and the device may 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 in the device.

[0117] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

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

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

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

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

[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 may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

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

[0124] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application further provides a vehicle, the vehicle comprising:

[0125] A memory for storing executable program codes;

[0126] A processor is used to call and run the executable program code from the memory so that the vehicle executes the method provided in any embodiment of the present application.

[0127] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the vehicle charging method described in any of the above embodiments.

[0128] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, 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, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0129] The computer instructions stored in the storage medium of the above embodiments are used to enable the computer to execute the vehicle charging method described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0130] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0131] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram 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 in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0132] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0133] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A vehicle charging method, characterized in that: The method comprises: Applying for charging from a target charging pile according to the 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; In response to the current request value and the pile end output current value meeting a preset charging adjustment condition, updating a gain multiplication factor of the current request value, and adjusting the current request value according to the updated gain multiplication factor; The charging is requested again from the target charging pile according to the adjusted current request value.

2. The method according to claim 1, characterized in that The current request value includes an initial current request value; 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 of the current request value includes: In response to the fact that the duration of the preset multiple of the pile end output current value being less than or equal to the initial current request value meets the first preset duration, the pile end 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 of the target charging pile, determining the multiple increase value of the gain multiple coefficient; The current gain multiplication factor is added to the multiplication increase value to obtain an updated gain multiplication factor.

3. The method according to claim 2, characterized in that The initial current request value is determined by the following method, including: 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; Determining a theoretical charging current value of the current vehicle according to the voltage, the temperature and the 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.

4. The method according to claim 3, characterized in that The method further comprises: In response to the time length during which the pile end output current value is greater than the preset multiple of the increased current request value and the time length meets the second preset time length, re-determining the initial current request value; According to the re-determined initial current request value, apply for charging to the target charging pile.

5. The method according to any one of claims 1 to 4, characterized in that: 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 of the current request value includes: In response to the fact that the duration of the preset multiple of the pile end output current value being less than or equal to the current request value meets the third preset duration, determining the multiple increase value of the gain multiple coefficient; The current gain multiplication factor is added to the multiplication increase value to obtain an updated gain multiplication factor.

6. The method according to claim 5, characterized in that The method further comprises: In response to the gain multiplier increasing to the preset maximum multiplier, the duration during which the pile end output current value is less than or equal to the preset multiplier of the current request value meets the third preset duration, and pile end fault information of the target charging pile is generated.

7. The method according to claim 1, characterized in that After generating the pile end fault information of the target charging pile, the method further includes: The pile end fault information is displayed through the human-computer interaction device of the current vehicle to prompt the user of the current vehicle to abandon the target charging pile and change the charging pile.

8. A vehicle charging device, characterized in that: The device comprises: A charging application module is used to apply for charging from a target charging pile according to a 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 the current output maximum value of the target charging pile; 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 adjust the current request value according to the updated gain multiplier coefficient; The re-application module is used to re-apply for charging from the target charging pile according to the adjusted current request value.

9. 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, the method according to any one of claims 1 to 7 is implemented.

10. A vehicle, characterized in that: The vehicle comprises: A memory for storing executable program codes; A processor, configured to call and run the executable program code from the memory so that the vehicle executes the method according to any one of claims 1 to 7.

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