Vehicle, charging system thereof, charging current adjusting method and device and medium

Abstract

The invention discloses a vehicle, a charging system of the vehicle, a charging current adjusting method and device and a medium. The vehicle comprises a vehicle-mounted battery, and the vehicle-mounted battery is charged through a charging pile. The vehicle charging current adjusting method comprises the steps that target charging current of a vehicle-mounted battery, actual charging current of the vehicle-mounted battery and request charging current sent to a charging pile are obtained in real time; determining a current adjustment parameter according to the current target charging current of the vehicle-mounted battery and the current actual charging current of the vehicle-mounted battery; determining a current request current target value according to the current target charging current, the current actual charging current, the current request charging current and the current adjustment parameter; and adjusting the current request charging current sent to the charging pile to the current request current target value. According to the technical scheme, by dynamically adjusting the current request charging current sent to the charging pile, the flexibility of adjusting the charging current of the vehicle and the charging efficiency of the vehicle-mounted battery are improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of new energy vehicles, and in particular, to a vehicle, its charging system, a charging current adjustment method, device, and medium. Background Art

[0002] When an electric vehicle is charged through a charging pile, the Battery Management System (BMS) needs to communicate with the charging pile to achieve an efficient and safe charging process. In actual use scenarios, when an electric vehicle is charging, some high-voltage and low-voltage loads in the vehicle still operate and consume part of the current, resulting in the actual charging current of the in-vehicle battery being lower than the target charging current, and there may even be a situation where the in-vehicle battery continuously discharges. Therefore, during the vehicle charging process, the charging current needs to be dynamically adjusted to meet the charging requirements of the in-vehicle battery and optimize the charging efficiency.

[0003] In the prior art, for the method of controlling the charging current during the vehicle charging process, based on the difference between the requested charging current sent by the battery management system and the actual current of the battery, the output current of the charging pile is adjusted multiple times with a fixed step size. This method can partially offset the current consumption problem caused by vehicle loads. However, the adjustment method with a fixed step size cannot dynamically adjust the current adjustment amplitude according to the difference between the target charging current and the actual charging current, resulting in poor flexibility in current adjustment during the vehicle charging process and low vehicle charging efficiency. Summary of the Invention

[0004] The present invention provides a vehicle, its charging system, a charging current adjustment method, device, and medium, which improve the flexibility of vehicle charging current adjustment and the charging efficiency of the in-vehicle battery by dynamically adjusting the current requested charging current sent to the charging pile.

[0005] In a first aspect of the present invention, a method for adjusting the charging current of a vehicle is provided. The vehicle includes an in-vehicle battery, and the in-vehicle battery is charged through a charging pile. The method for adjusting the charging current of the vehicle includes:

[0006] Obtaining in real time the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the requested charging current sent to the charging pile;

[0007] Determining a current adjustment parameter according to the current target charging current and the current actual charging current of the in-vehicle battery;

[0008] Determining a current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter;

[0009] Adjust the current requested charging current sent to the charging pile to the current requested current target value.

[0010] Optionally, obtaining the target charging current of the vehicle-mounted battery in real time includes:

[0011] Obtaining the state of charge of the vehicle-mounted battery and the temperature of the vehicle-mounted battery in real time;

[0012] Determine the current target charging current of the vehicle-mounted battery according to the current state of charge of the vehicle-mounted battery and the current temperature of the vehicle-mounted battery.

[0013] Optionally, determining the current adjustment parameter according to the current target charging current of the vehicle-mounted battery and the current actual charging current of the vehicle-mounted battery includes:

[0014] Obtain the current current difference between the current target charging current and the current actual charging current;

[0015] Determine the current adjustment parameter according to the current current difference.

[0016] Optionally, determining the current adjustment parameter according to the current current difference includes:

[0017] Judge whether the current current difference is greater than or equal to zero;

[0018] If not, determine the current adjustment parameter as the first preset adjustment parameter; the value range of the first preset adjustment parameter K1 is: K1 > 1;

[0019] If so, determine the current adjustment parameter according to the current current difference and the preset current threshold.

[0020] Optionally, determining the current adjustment parameter according to the current current difference and the preset current threshold includes:

[0021] When the current current difference is less than or equal to the preset current threshold, determine the current adjustment parameter as the second preset adjustment parameter; the second preset adjustment parameter K2 is 1;

[0022] When the current current difference is greater than the preset current threshold, determine the current adjustment parameter as the third preset adjustment parameter; the value range of the third preset adjustment parameter K3 is: 0 < K3 < 1.

[0023] Optionally, determining the current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter includes:

[0024] Calculate the current current difference between the current target charging current and the current actual charging current;

[0025] Based on the current current difference, the current requested charging current, and the current adjustment parameter, determine the current requested current target value according to a first calculation formula; the first calculation formula is:

[0026] I r (t + 1) = I r (t) + k × I d

[0027] where, I r (t + 1) is the current requested current target value, I r (t) is the current requested charging current, k is the current adjustment parameter, and I d is the current current difference.

[0028] A second aspect of the present invention provides a vehicle charging current adjustment device. The vehicle includes an in-vehicle battery, and the in-vehicle battery is charged through a charging pile. The vehicle charging current adjustment device includes:

[0029] A parameter acquisition module, configured to acquire in real time the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the requested charging current sent to the charging pile;

[0030] An adjustment parameter determination module, configured to determine a current adjustment parameter according to the current target charging current and the current actual charging current of the in-vehicle battery;

[0031] A requested current target value determination module, configured to determine a current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter;

[0032] A requested charging current adjustment module, configured to adjust the current requested charging current sent to the charging pile to the current requested current target value.

[0033] A third aspect of the present invention provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the vehicle charging current adjustment method as described above.

[0034] A fourth aspect of the present invention provides a vehicle, which includes: a vehicle frame, an in-vehicle battery disposed inside the vehicle frame, and a controller;

[0035] The controller is configured to execute the vehicle charging current adjustment method as described above.

[0036] The fifth aspect of the present invention provides a vehicle charging system, which includes: the vehicle and the charging pile as described above;

[0037] The charging pile includes a communication module; the communication module of the charging pile is communicatively connected to the controller in the vehicle; the charging signal output end of the charging pile is electrically connected to the charging signal input end of the vehicle.

[0038] According to the technical solution of the present invention, by obtaining in real time the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the requested charging current sent to the charging pile, it is possible to determine the current adjustment parameter according to the current target charging current and the current actual charging current of the in-vehicle battery, so as to determine the adjustment amplitude when adjusting the current requested charging current. By determining the current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter, and by adjusting the current requested charging current sent to the charging pile to the current requested current target value, the adjustment of the current requested charging current is realized through the current adjustment parameter, thereby ensuring that the charging current currently output by the charging pile matches the charging demand of the in-vehicle battery, making the current actual charging current tend to be consistent with the current target charging current, improving the charging efficiency of the in-vehicle battery, and at the same time avoiding continuous discharge or overcurrent of the in-vehicle battery, and extending the service life of the in-vehicle battery. In addition, by dynamically adjusting the adjustment amplitude of the current requested charging current according to the current target charging current and the current actual charging current, when the difference between the current target charging current and the current actual charging current is small, the current actual charging current can quickly approach the current target charging current, and when the difference between the current target charging current and the current actual charging current is large, the actual charging current can be smoothly adjusted to avoid overload of the charging pile or the in-vehicle battery caused by current mutation, improving the flexibility of vehicle charging current adjustment.

[0039] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0041] Figure 1 It is a schematic flowchart of a method for adjusting vehicle charging current provided in Embodiment 1 of the present invention;

[0042] Figure 2 It is a schematic flowchart of a method for adjusting the charging current of a vehicle provided in the second embodiment of the present invention;

[0043] Figure 3 It is a schematic flowchart of a method for adjusting the charging current of a vehicle provided in the third embodiment of the present invention;

[0044] Figure 4 It is a schematic structural diagram of a device for adjusting the charging current of a vehicle provided in the fourth embodiment of the present invention;

[0045] Figure 5 It is a schematic structural diagram of a controller of a vehicle provided in the fifth embodiment of the present invention;

[0046] Figure 6 It is a schematic structural diagram of a vehicle charging system provided in the sixth embodiment of the present invention. Detailed implementation manners

[0047] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0049] Embodiment 1

[0050] Figure 1 It is a schematic flowchart of a method for adjusting the charging current of a vehicle provided in the first embodiment of the present invention. This embodiment can be used to adjust the charging current of a vehicle. This method can be executed by a device for adjusting the charging current of a vehicle, and this device can be implemented in a software and / or hardware manner and is generally integrated in the controller of the vehicle. Correspondingly, as Figure 1As shown, the vehicle charging current adjustment method may include:

[0051] S101. Obtain the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the requested charging current sent to the charging pile in real time.

[0052] Specifically, the vehicle may include an in-vehicle battery and a controller. The in-vehicle battery is used to supply power to the vehicle's engine and the load terminal. The controller may include a battery management system, and the battery management system may be communicatively connected to the communication module of the charging pile through the CAN bus, so that the battery management system can send the current requested charging current to the charging pile. After receiving the current requested charging current sent by the battery management system, the charging pile will adjust the current output current of its charging module according to the current requested charging current, and can transmit the charging signal to the charging signal input terminal of the vehicle, such as the charging socket, through the charging signal output terminal of the charging pile, such as the charging gun, thereby realizing charging the in-vehicle battery of the vehicle through the charging pile. In addition, the communication module of the charging pile can also transmit the current actual output charging current value of the charging pile to the battery management system through the CAN bus, so that the battery management system can verify whether the current actual output charging current of the charging pile meets the current requested charging current.

[0053] To dynamically adjust the current requested charging current sent to the charging pile, the controller first obtains in real time the target charging current of the vehicle-mounted battery, the actual charging current of the vehicle-mounted battery, and the requested charging current sent to the charging pile. The target charging current of the vehicle-mounted battery can specifically be understood as the charging current that the battery management system hopes the charging pile to provide in order to achieve efficient and safe charging under the current operating conditions of the vehicle-mounted battery. Optionally, obtaining the target charging current of the vehicle-mounted battery in real time includes: obtaining in real time the state of charge of the vehicle-mounted battery and the temperature of the vehicle-mounted battery; and determining the current target charging current of the vehicle-mounted battery according to the current state of charge of the vehicle-mounted battery and the current temperature of the vehicle-mounted battery. The state of charge (SOC) can specifically be understood as the percentage of the current remaining power of the vehicle-mounted battery in its total capacity. The battery management system can obtain the current state of charge of the vehicle-mounted battery, and can obtain the current temperature of the vehicle-mounted battery through a temperature sensor, so that it can determine the target charging current of the vehicle-mounted battery corresponding to the current state of charge of the vehicle-mounted battery and the current temperature of the vehicle-mounted battery as the current target charging current of the vehicle-mounted battery according to the current state of charge of the vehicle-mounted battery, the current temperature of the vehicle-mounted battery, and the mapping relationship between the state of charge and temperature of the vehicle-mounted battery and the target charging current of the vehicle-mounted battery. Among them, the mapping relationship between the state of charge and temperature of the vehicle-mounted battery and the target charging current of the vehicle-mounted battery can be established based on experimental data, mathematical models, or empirical rules. Exemplarily, the mapping relationship can be implemented through a MAP graph or a theoretical calculation formula between the state of charge and temperature of the vehicle-mounted battery and the target charging current of the vehicle-mounted battery. It can also be understood that when the current state of charge of the vehicle-mounted battery is relatively high, the vehicle-mounted battery will enter the constant voltage charging stage, and the target charging current of the vehicle-mounted battery will gradually decrease to avoid overcharging; when the current temperature of the vehicle-mounted battery is relatively high, the target charging current of the vehicle-mounted battery will gradually decrease to avoid overheating of the vehicle-mounted battery caused by too high a charging current, resulting in damage to the vehicle-mounted battery. Therefore, by establishing an appropriate mapping relationship, it is possible to dynamically adjust the current target charging current of the vehicle-mounted battery according to changes in the state of charge and temperature of the vehicle-mounted battery.

[0054] The actual charging current of the vehicle-mounted battery can be specifically understood as the charging current actually received by the vehicle-mounted battery during the charging process. The battery management system can obtain the actual charging current of the vehicle-mounted battery in real time through a current sensor installed in the charging circuit of the vehicle-mounted battery. The requested charging current sent to the charging pile can be specifically understood as the expected current value sent by the battery management system to the charging pile, which is used to guide the charging pile to adjust its output current. By obtaining the target charging current of the vehicle-mounted battery, the actual charging current of the vehicle-mounted battery, and the requested charging current sent to the charging pile in real time through the controller, it lays a foundation for determining the current adjustment parameter and the current requested current target value in the subsequent steps. In addition, when the controller controls the charging pile to start charging the vehicle-mounted battery through the current requested charging current, the current requested charging current sent to the charging pile can be the current target charging current of the vehicle-mounted battery.

[0055] S102. Determine the current adjustment parameter according to the current target charging current of the vehicle-mounted battery and the current actual charging current of the vehicle-mounted battery.

[0056] Specifically, after the controller obtains the current target charging current of the vehicle-mounted battery and the current actual charging current of the vehicle-mounted battery, it can determine the current adjustment parameter by comparing the current target charging current and the current actual charging current. The current adjustment parameter can be specifically understood as the adjustment amplitude when adjusting the current requested charging current. It can be understood that when the current target charging current is less than the current actual charging current, it means that the charging current currently output by the charging pile is too high, and the charging current received by the vehicle-mounted battery exceeds the expected value of the battery management system. It is necessary to reduce the current requested charging current sent to the charging pile through the adjustment parameter so that the current actual charging current tends to be consistent with the current target charging current; when the current target charging current is greater than or equal to the current actual charging current, it means that the vehicle load consumes part of the charging current, making the current actual charging current slightly lower than the current target charging current. It is necessary to increase the current requested charging current sent to the charging pile through the adjustment parameter so that the current actual charging current tends to be consistent with the current target charging current. By determining the current adjustment parameter, it lays a foundation for determining the current requested current target value in the subsequent steps.

[0057] S103. Determine the current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter.

[0058] Specifically, after the controller determines the current adjustment parameter based on the current target charging current and the current actual charging current, it will determine the current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter, so as to adjust the current requested charging current through the current adjustment parameter, making the current actual charging current tend to be consistent with the current target charging current, improving the charging efficiency of the in-vehicle battery, and at the same time avoiding continuous discharge or overcurrent of the in-vehicle battery and extending the service life of the in-vehicle battery. In addition, by dynamically adjusting the adjustment range of the current requested charging current according to the current target charging current and the current actual charging current, when the difference between the current target charging current and the current actual charging current is small, the current actual charging current can quickly approach the current target charging current, and when the difference between the current target charging current and the current actual charging current is large, the actual charging current can be smoothly adjusted to avoid overloading of the charging pile or the in-vehicle battery caused by current mutation, enabling the vehicle charging current adjustment to adapt to a variety of different working conditions and improving the flexibility of the vehicle charging current adjustment.

[0059] S104. Adjust the current requested charging current sent to the charging pile to the current requested current target value.

[0060] Specifically, after the controller determines the current requested current target value, it will adjust the current requested charging current sent to the charging pile to the current requested current target value, so that the battery management system can transmit the current requested current target value to the communication module of the charging pile through the CAN bus, thereby guiding the charging pile to adjust its output charging current, making the current actual charging current of the in-vehicle battery approach the current requested current target value. This ensures that the current charging current output by the charging pile matches the charging demand of the in-vehicle battery, extends the service life of the in-vehicle battery, and improves the charging efficiency of the in-vehicle battery.

[0061] In this embodiment, by obtaining the target charging current of the vehicle-mounted battery, the actual charging current of the vehicle-mounted battery, and the requested charging current sent to the charging pile in real time, it is possible to determine the current adjustment parameter according to the current target charging current and the current actual charging current of the vehicle-mounted battery, so as to determine the adjustment amplitude when adjusting the current requested charging current. By determining the current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter, and adjusting the current requested charging current sent to the charging pile to the current requested current target value, the current requested charging current is adjusted by the current adjustment parameter, thereby ensuring that the charging current currently output by the charging pile matches the charging demand of the vehicle-mounted battery, making the current actual charging current tend to be consistent with the current target charging current, improving the charging efficiency of the vehicle-mounted battery, and at the same time avoiding continuous discharge or overcurrent of the vehicle-mounted battery and prolonging the service life of the vehicle-mounted battery. In addition, by dynamically adjusting the adjustment amplitude of the current requested charging current according to the current target charging current and the current actual charging current, when the difference between the current target charging current and the current actual charging current is small, the current actual charging current can quickly approach the current target charging current, and when the difference between the current target charging current and the current actual charging current is large, the actual charging current can be smoothly adjusted to avoid overloading of the charging pile or the vehicle-mounted battery caused by current mutation, improving the flexibility of vehicle charging current adjustment.

[0062] Embodiment 2

[0063] Figure 2 It is a schematic flowchart of a method for adjusting the charging current of a vehicle provided in Embodiment 2 of the present invention. On the basis of the above embodiment, this embodiment details the method for determining the current adjustment parameter according to the current target charging current and the current actual charging current of the vehicle-mounted battery. Correspondingly, as Figure 2 shown, the method for adjusting the charging current of the vehicle in this embodiment may include:

[0064] S201. Obtain the target charging current of the vehicle-mounted battery, the actual charging current of the vehicle-mounted battery, and the requested charging current sent to the charging pile in real time.

[0065] S202. Obtain the current current difference between the current target charging current and the current actual charging current.

[0066] Specifically, after the controller obtains the current target charging current of the vehicle-mounted battery and the current actual charging current of the vehicle-mounted battery, it can obtain the current current difference between the current target charging current and the current actual charging current. By judging the positive and negative and magnitude of the current current difference, the controller can determine the deviation between the current actual charging current and the current target charging current, thus laying a foundation for determining the adjustment amplitude of the current requested charging current according to the deviation between the current actual charging current and the current target charging current, that is, determining the current adjustment parameter.

[0067] S203. Determine the current adjustment parameter according to the current current difference.

[0068] Specifically, after the controller determines the current current difference, it will determine the current adjustment parameter according to the positive and negative and magnitude of the current current difference, laying a foundation for subsequently adjusting the current requested charging current by the product of the current adjustment parameter and the current current difference. The current adjustment parameter can be specifically understood as the adjustment amplitude when adjusting the current requested charging current. It can be understood that if the current current difference is less than zero, it means that the current target charging current is less than the current actual charging current, and it is necessary to reduce the requested charging current sent to the charging pile by the product of the current adjustment parameter and the current current difference; if the current current difference is greater than zero, it means that the vehicle load consumes part of the charging current, and it is necessary to increase the requested charging current sent to the charging pile by the product of the current adjustment parameter and the current current difference. By adjusting the current requested charging current by the product of the current adjustment parameter and the current current difference, it ensures that the charging current currently output by the charging pile matches the charging demand of the vehicle-mounted battery, makes the current actual charging current tend to be consistent with the current target charging current, improves the charging efficiency of the vehicle-mounted battery, and at the same time extends the service life of the vehicle-mounted battery. In addition, by dynamically adjusting the adjustment amplitude of the current requested charging current according to the current target charging current and the current actual charging current, when the difference between the current target charging current and the current actual charging current is small, the current actual charging current can quickly approach the current target charging current, and when the difference between the current target charging current and the current actual charging current is large, the actual charging current can be smoothly adjusted to avoid overloading of the charging pile or the vehicle-mounted battery caused by current mutation, so that the vehicle charging current adjustment can adapt to a variety of different working conditions and improve the flexibility of the vehicle charging current adjustment.

[0069] Optionally, determining the current adjustment parameter according to the current current difference includes: judging whether the current current difference is greater than or equal to zero; if not, determining the current adjustment parameter as the first preset adjustment parameter; the value range of the first preset adjustment parameter K1 is: K1 > 1; if so, determining the current adjustment parameter according to the current current difference and the preset current threshold.

[0070] Specifically, after the controller obtains the current current difference, the controller will determine whether the current current difference is greater than or equal to zero. If the controller determines that the current current difference is less than zero, it means that the current target charging current is less than the current actual charging current. It is necessary to reduce the requested charging current sent to the charging pile by the product of the current adjustment parameter and the current current difference, so as to be able to reduce the current actual charging current, so that the current actual charging current tends to be consistent with the current target charging current. At this time, the controller can determine the current adjustment parameter as the first preset adjustment parameter. The first preset adjustment parameter K1 is greater than 1. Exemplarily, K1 can be 1.5, that is, the controller can use 1.5 times the current current difference as the adjustment amplitude to quickly reduce the current requested charging current, so that the current actual charging current can be quickly reduced and tend to be consistent with the current target charging current. By using the first preset adjustment parameter to greatly adjust the current requested charging current, it effectively avoids continuous overcharging of the in-vehicle battery during charging, extends the service life of the in-vehicle battery, and at the same time improves the flexibility of vehicle charging current adjustment and the charging efficiency of the in-vehicle battery.

[0071] If the controller determines that the current current difference is greater than or equal to zero, it means that the vehicle load consumes part of the charging current, making the current actual charging current lower than the current target charging current. At this time, it is necessary to determine the current adjustment parameter according to the current current difference and the preset current threshold. Among them, the preset current threshold can be specifically understood as the current threshold used to determine whether to quickly adjust or smoothly adjust the current current difference. Exemplarily, the preset current threshold can be 10A. By setting the preset current threshold, the situation where the current actual charging current is lower than the current target charging current can be divided into two adjustment scenarios with smaller deviation and larger deviation, so that the vehicle charging current adjustment can adapt to a variety of different working conditions and improve the flexibility of vehicle charging current adjustment.

[0072] Optionally, determining the current adjustment parameter according to the current current difference and the preset current threshold includes: when the current current difference is less than or equal to the preset current threshold, determining the current adjustment parameter as the second preset adjustment parameter; the second preset adjustment parameter K2 is 1; when the current current difference is greater than the preset current threshold, determining the current adjustment parameter as the third preset adjustment parameter; the value range of the third preset adjustment parameter K3 is: 0 < K3 < 1.

[0073] Specifically, if the controller determines that the current current difference is greater than or equal to zero, the controller will further compare the current current difference with a preset current threshold to determine whether to quickly adjust or smoothly adjust the current current difference. It can be understood that if the controller determines that the current current difference is less than or equal to the preset current threshold, it means that the deviation between the current actual charging current and the current target charging current is small, and the charging current output by the charging pile at present is basically matched with the current target charging current. The controller can set the current adjustment parameter to a second preset adjustment parameter, and the second preset adjustment parameter K2 is 1, that is, the controller can use the current current difference as the adjustment amplitude to increase the current requested charging current. Since the deviation between the current actual charging current and the current target charging current is small, using the current current difference as the adjustment amplitude can quickly eliminate the error between the current actual charging current and the current target charging current, thereby improving the charging efficiency of the in-vehicle battery.

[0074] It can also be understood that if the controller determines that the current current difference is greater than the preset current threshold, it means that the deviation between the current actual charging current and the current target charging current is large, and the vehicle load consumes most of the charging current. It is necessary to increase the current requested charging current sent to the charging pile by the product of the current adjustment parameter and the current current difference, so as to increase the current actual charging current, so that the current actual charging current and the current target charging current tend to be consistent. At this time, the controller can determine the current adjustment parameter as a third preset adjustment parameter, and the third preset adjustment parameter K3 is greater than 0 and less than 1. Exemplarily, K3 can be 0.5, that is, the controller can use 0.5 times of the current current difference as the adjustment amplitude to slightly increase the current requested charging current. Since the deviation between the current actual charging current and the current target charging current is large, slightly increasing the current requested charging current through the third preset adjustment parameter can achieve smooth adjustment of the charging current of the vehicle, thereby avoiding sudden increase of the charging current provided to the in-vehicle battery and preventing overloading of the charging pile or the in-vehicle battery caused by current mutation, and improving the safety of the vehicle charging system.

[0075] S204. Determine the current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter.

[0076] S205. Adjust the current requested charging current sent to the charging pile to the current requested current target value.

[0077] In this embodiment, by obtaining the current current difference between the current target charging current and the current actual charging current, the current adjustment parameter can be determined according to the current current difference, laying a foundation for subsequently adjusting the current requested charging current by the product of the current adjustment parameter and the current current difference. By determining the current adjustment parameter as a first preset adjustment parameter greater than 1 when the current current difference is less than zero, the current requested charging current is adjusted significantly by the first preset adjustment parameter, so that the current actual charging current can be quickly reduced to effectively avoid continuous overcharging of the in-vehicle battery during charging. And by determining the current adjustment parameter as a second preset adjustment parameter equal to 1 when the current current difference is greater than or equal to zero and less than or equal to the preset current threshold, the error between the current actual charging current and the current target charging current can be quickly eliminated when the deviation between the current actual charging current and the current target charging current is small, improving the charging efficiency of the in-vehicle battery. In addition, by determining the current adjustment parameter as a third preset adjustment parameter greater than 0 and less than 1 when the current current difference is greater than or equal to zero and greater than the preset current threshold, when the deviation between the previous actual charging current and the current target charging current is large, the charging current of the vehicle can be smoothly adjusted to prevent overloading of the charging pile or in-vehicle battery caused by current mutation. By dynamically adjusting the adjustment amplitude of the current requested charging current, the flexibility of vehicle charging current adjustment is improved.

[0078] Embodiment III

[0079] Figure 3 FIG. is a schematic flow chart of a method for adjusting the charging current of a vehicle provided in Embodiment III of the present invention. On the basis of the above embodiments, this embodiment details the method for determining the current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter. Correspondingly, as Figure 3 shown, the method for adjusting the charging current of a vehicle in this embodiment may include:

[0080] S301. Obtain in real time the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the requested charging current sent to the charging pile.

[0081] S302. Determine the current adjustment parameter according to the current target charging current and the current actual charging current of the in-vehicle battery.

[0082] S303. Calculate the current current difference between the current target charging current and the current actual charging current.

[0083] Specifically, to determine the current requested current target value, the controller first calculates the current current difference between the current target charging current and the current actual charging current, so as to be able to determine the current adjustment parameter according to the positive or negative and magnitude of the current difference, laying a foundation for subsequently determining the current requested current target value based on the current difference, the current requested charging current, and the current adjustment parameter.

[0084] S304. Based on the current difference, the current requested charging current, and the current adjustment parameter, determine the current requested current target value according to the first calculation formula.

[0085] Wherein, the first calculation formula is:

[0086] I r (t + 1) = I r (t) + k × I d

[0087] Wherein, I r (t + 1) is the current requested current target value, I r (t) is the current requested charging current, k is the current adjustment parameter, and I d is the current difference.

[0088] Specifically, after the controller determines the current difference, the current requested charging current, and the current adjustment parameter, it will determine the current requested current target value based on the first calculation formula, thus laying a foundation for subsequently adjusting the current requested charging current sent to the charging pile to the current requested current target value, ensuring that the charging current currently output by the charging pile matches the charging demand of the vehicle-mounted battery, extending the service life of the vehicle-mounted battery, and improving the flexibility of vehicle charging current adjustment and the charging efficiency of the vehicle-mounted battery.

[0089] In an exemplary embodiment, if the controller determines that the current difference I d is less than zero, it indicates that the current target charging current is less than the current actual charging current, and it is necessary to determine the current requested current target value I r (t + 1) as I r (t) + k × I d , that is, reduce the requested charging current sent to the charging pile by the product of the current adjustment parameter k and the current difference I d so as to be able to reduce the current actual charging current, thereby making the current actual charging current tend to be consistent with the current target charging current. At this time, the controller can determine the current adjustment parameter k as 1.5, that is, the controller can use the current difference I d1.5 times of it is used as the adjustment range to quickly reduce the current charging current of the current request, so that the current actual charging current can be quickly reduced and tend to be consistent with the current target charging current, effectively avoiding continuous overcharging of the in-vehicle battery during the charging process, extending the service life of the in-vehicle battery, and at the same time improving the flexibility of vehicle charging current adjustment and the charging efficiency of the in-vehicle battery.

[0090] In another exemplary embodiment, if the controller determines that the current current difference I d is greater than or equal to zero, and the current current difference I d is less than or equal to the preset current threshold, it indicates that the deviation between the current actual charging current and the current target charging current is small, and the charging current output by the charging pile currently is basically matched with the current target charging current. The controller can determine the current adjustment parameter k as 1, and determine the current requested current target value I r (t + 1) as I r (t)+k×I d , that is, the controller can use the current current difference I d as the adjustment range to increase the current requested charging current. Since the deviation between the current actual charging current and the current target charging current is small, using the current current difference I d as the adjustment range can quickly eliminate the error between the current actual charging current and the current target charging current, thereby improving the charging efficiency of the in-vehicle battery.

[0091] In another exemplary embodiment, if the controller determines that the current current difference I d is greater than or equal to zero, and the current current difference I d is greater than the preset current threshold, it indicates that the deviation between the current actual charging current and the current target charging current is large, and the vehicle load consumes most of the charging current. It is necessary to determine the current requested current target value I r (t + 1) as I r (t)+k×I d , that is, increase the requested charging current sent to the charging pile by the product of the current adjustment parameter k and the current current difference I d to be able to increase the current actual charging current, so that the current actual charging current tends to be consistent with the current target charging current. At this time, the controller can determine the current adjustment parameter k as 0.5, that is, the controller can use the current current difference I dUse 0.5 times of it as the adjustment range to slightly increase the current charging current of the current request. Since the deviation between the current actual charging current and the current target charging current is large, slightly increasing the current charging current of the current request is used to smoothly adjust the charging current of the vehicle, thereby avoiding a sudden increase in the charging current provided to the in-vehicle battery and preventing the charging pile or the in-vehicle battery from being overloaded caused by current mutation, and improving the safety of the vehicle charging system.

[0092] S305. Adjust the current request charging current sent to the charging pile to the current request current target value.

[0093] In this embodiment, by calculating the current current difference between the current target charging current and the current actual charging current, it is possible to determine the current request current target value based on the first calculation formula according to the current current difference, the current request charging current, and the current adjustment parameter. This lays a foundation for subsequently adjusting the current request charging current sent to the charging pile to the current request current target value, ensuring that the current charging current output by the charging pile currently matches the charging demand of the in-vehicle battery, extending the service life of the in-vehicle battery, and improving the flexibility of vehicle charging current adjustment and the charging efficiency of the in-vehicle battery.

[0094] Embodiment Four

[0095] Figure 4 FIG. is a schematic structural diagram of a vehicle charging current adjustment device provided by Embodiment Four of the present invention. The device can implement the vehicle charging current adjustment method provided by the embodiments of the present invention. The device can be implemented in a software and / or hardware manner and is generally integrated in the controller of the vehicle. As Figure 4 shown, the device includes: a parameter acquisition module 401, an adjustment parameter determination module 402, a request current target value determination module 403, and a request charging current adjustment module 404. The specific structure of the device is as follows:

[0096] The parameter acquisition module 401 is configured to acquire the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the request charging current sent to the charging pile in real time;

[0097] The adjustment parameter determination module 402 is configured to determine the current adjustment parameter according to the current target charging current and the current actual charging current of the in-vehicle battery;

[0098] The request current target value determination module 403 is configured to determine the current request current target value according to the current target charging current, the current actual charging current, the current request charging current, and the current adjustment parameter;

[0099] The request charging current adjustment module 404 is configured to adjust the current request charging current sent to the charging pile to the current request current target value.

[0100] In an alternative embodiment of the present invention, the parameter acquisition module 401 may further be configured to: obtain in real time the state of charge of the vehicle-mounted battery and the temperature of the vehicle-mounted battery; determine the current target charging current of the vehicle-mounted battery according to the current state of charge of the vehicle-mounted battery and the current temperature of the vehicle-mounted battery.

[0101] In an alternative embodiment of the present invention, the adjustment parameter determination module 402 may further be configured to: obtain the current current difference between the current target charging current and the current actual charging current; determine the current adjustment parameter according to the current current difference.

[0102] In an alternative embodiment of the present invention, the adjustment parameter determination module 402 may further be configured to: determine whether the current current difference is greater than or equal to zero; if not, determine that the current adjustment parameter is a first preset adjustment parameter; the value range of the first preset adjustment parameter K1 is: K1 > 1; if so, determine the current adjustment parameter according to the current current difference and the preset current threshold.

[0103] In an alternative embodiment of the present invention, the adjustment parameter determination module 402 may further be configured to: when the current current difference is less than or equal to the preset current threshold, determine that the current adjustment parameter is a second preset adjustment parameter; the second preset adjustment parameter K2 is 1; when the current current difference is greater than the preset current threshold, determine that the current adjustment parameter is a third preset adjustment parameter; the value range of the third preset adjustment parameter K3 is: 0 < K3 < 1.

[0104] In an alternative embodiment of the present invention, the requested current target value determination module 403 may further be configured to: calculate the current current difference between the current target charging current and the current actual charging current; determine the current requested current target value based on a first calculation formula according to the current current difference, the current requested charging current, and the current adjustment parameter; the first calculation formula is:

[0105] I r (t + 1) = I r (t) + k × I d

[0106] wherein, I r (t + 1) is the current requested current target value, I r (t) is the current requested charging current, k is the current adjustment parameter, and I d is the current current difference.

[0107] The above vehicle charging current adjustment device can execute the vehicle charging current adjustment method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the method. For technical details not described in detail in this embodiment, reference can be made to the vehicle charging current adjustment method provided in any embodiment of the present invention.

[0108] Since the above-introduced vehicle charging current adjustment device is a device that can execute the vehicle charging current adjustment method in the embodiments of the present invention, based on the vehicle charging current adjustment method introduced in the embodiments of the present invention, those skilled in the art can understand the specific implementation manners and various variations of the vehicle charging current adjustment device in this embodiment. Therefore, the details of how the vehicle charging current adjustment device implements the vehicle charging current adjustment method in the embodiments of the present invention will not be described in detail here. As long as the device adopted by those skilled in the art to implement the vehicle charging current adjustment method in the embodiments of the present invention belongs to the scope protected by this application.

[0109] Embodiment Five

[0110] Figure 5 The structural schematic diagram of the controller of the vehicle that can be used to implement the embodiments of the present invention is shown. The controller can adopt various forms to adapt to the environment and requirements inside the vehicle, such as in-vehicle computers, in-vehicle controllers, in-vehicle intelligent terminals, in-vehicle embedded systems, and in-vehicle control units. These devices are specifically designed to adjust the vehicle charging current to ensure the effect and safety of vehicle charging current adjustment. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0111] As Figure 5 shown, the controller 10 includes at least one processor 11 and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc. Among them, the memory stores a computer program executable by the at least one processor. The processor 11 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the controller 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. The input / output (I / O) interface 15 is also connected to the bus 14.

[0112] Multiple components in controller 10 are connected to I / O interface 15, including: input unit 16, such as in-vehicle control buttons, steering wheel controllers, etc.; output unit 17, such as in-vehicle displays, voice prompt systems, etc.; storage unit 18, such as in-vehicle hard drives, flash memories, etc.; and communication unit 19, such as in-vehicle communication modules, in-vehicle Wi-Fi devices, etc. Communication unit 19 allows controller 10 to exchange information / data with other vehicle devices through, such as, in-vehicle networks and / or vehicle communication systems.

[0113] Processor 11 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, central processing unit (CPU), graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 executes the various methods and processes described above, such as the vehicle charging current regulation method.

[0114] In some embodiments, the vehicle charging current regulation method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as storage unit. In some embodiments, part or all of the computer program can be loaded and / or installed onto the vehicle in the above embodiments via ROM and / or communication unit. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the vehicle charging current regulation method described above can be executed. Alternatively, in other embodiments, processor 11 can be configured to execute the vehicle charging current regulation method by any other suitable means (such as, by means of firmware).

[0115] Optionally, a vehicle charging current regulation method can include: obtaining in real time the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the requested charging current sent to the charging pile; determining the current adjustment parameter according to the current target charging current and the current actual charging current of the in-vehicle battery; determining the current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter; and adjusting the current requested charging current sent to the charging pile to the current requested current target value.

[0116] The various embodiments of the systems and techniques described above in this specification can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from, and transmits data and instructions to, a storage system, at least one input device, and at least one output device.

[0117] The computer program for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer program can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.

[0118] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0119] To provide interaction with a user, the systems and techniques described herein can be implemented on a controller that has: an in-vehicle display device (e.g., an in-vehicle liquid crystal display screen) for displaying information to the user; and an in-vehicle keyboard and a pointing device (e.g., a steering wheel controller or a touch screen) through which the user can provide input to the controller. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0120] The systems and techniques described herein can be implemented in a computing system including backend components (e.g., as a data server), or a computing system including middleware components (e.g., an application server), or a computing system including frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system including any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0121] The computing system can include a client and a server. The client and the server are generally far from each other and usually interact through a communication network. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0122] Embodiment Six

[0123] Based on the same inventive concept, an embodiment of the present invention further provides a vehicle, which includes: a vehicle frame, an in-vehicle battery and a controller disposed within the vehicle frame.

[0124] Wherein, the controller is used to execute the vehicle charging current adjustment method of the above embodiment.

[0125] Therefore, the vehicle provided in this embodiment has the structure and operation of the vehicle charging current adjustment device of the above embodiment and can achieve the effects of the vehicle charging current adjustment method of the above embodiment. The same parts can be referred to the above description and will not be elaborated herein.

[0126] Embodiment Seven

[0127] Based on the same inventive concept, an embodiment of the present invention further provides a vehicle charging system, as Figure 6 shown. The vehicle charging system includes: the vehicle 1 and the charging pile 2 in the above embodiment;

[0128] Wherein, the charging pile 2 includes a communication module 21; the communication module 21 of the charging pile 2 is communicatively connected to the controller 11 in the vehicle 1; the charging signal output terminal 22 of the charging pile 2 is electrically connected to the charging signal input terminal 12 of the vehicle 1.

[0129] Specifically, the vehicle 1 may include an on-vehicle battery 13 and a controller 11. The on-vehicle battery 13 is used to supply power to the engine and the load end of the vehicle 1. The controller 11 may include a battery management system. The battery management system may be communicatively connected to the communication module 21 of the charging pile 2 through a CAN bus, so that the battery management system can send the current requested charging current to the charging pile. After receiving the current requested charging current sent by the battery management system, the charging pile 2 will adjust the current output current of its charging module 23 according to the requested charging current, and can transmit the charging signal to the charging signal input terminal 12 of the vehicle 1, such as a charging socket, through the charging signal output terminal 22 of the charging pile 2, such as a charging gun, thereby realizing charging the on-vehicle battery 13 of the vehicle 1 through the charging pile 2. In addition, the communication module 21 of the charging pile 2 can also transmit the current actual output charging current value of the charging pile 2 to the battery management system through the CAN bus, so that the battery management system can verify whether the current actual output charging current of the charging pile 2 meets the current requested charging current.

[0130] Therefore, the vehicle charging system provided in this embodiment has the structure and operation of the vehicle charging current adjustment device in the above embodiment, and can achieve the effects of the vehicle charging current adjustment method in the above embodiment. The same parts can refer to the above description and will not be elaborated here.

[0131] It should be understood that various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in the present invention can be achieved. No limitation is made herein.

[0132] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for adjusting the charging current of a vehicle, characterized in that The vehicle includes an in-vehicle battery, and the in-vehicle battery is charged through a charging pile; the method for adjusting the vehicle charging current includes: Obtain in real time the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the requested charging current sent to the charging pile; Determine a current adjustment parameter according to the current target charging current of the in-vehicle battery and the current actual charging current of the in-vehicle battery; Determine a current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter; Adjust the current requested charging current sent to the charging pile to the current requested current target value.

2. The vehicle charging current regulation method according to claim 1, wherein Obtaining in real time the target charging current of the in-vehicle battery includes: Obtain in real time the state of charge of the in-vehicle battery and the temperature of the in-vehicle battery; Determine the current target charging current of the in-vehicle battery according to the current state of charge of the in-vehicle battery and the current temperature of the in-vehicle battery.

3. The vehicle charging current regulation method according to claim 1, wherein Determining a current adjustment parameter according to the current target charging current of the in-vehicle battery and the current actual charging current of the in-vehicle battery includes: Obtain the current current difference between the current target charging current and the current actual charging current; Determine the current adjustment parameter according to the current current difference.

4. The vehicle charging current regulation method according to claim 3, characterized in that Determining the current adjustment parameter according to the current current difference includes: Judge whether the current current difference is greater than or equal to zero; If not, determine the current adjustment parameter as a first preset adjustment parameter; the value range of the first preset adjustment parameter K1 is: K1 > 1; If so, determine the current adjustment parameter according to the current current difference and a preset current threshold.

5. The vehicle charging current regulation method according to claim 4, wherein Determining the current adjustment parameter according to the current current difference and a preset current threshold includes: When the current current difference is less than or equal to the preset current threshold, determine the current adjustment parameter as a second preset adjustment parameter; the second preset adjustment parameter K2 is 1; When the current current difference is greater than the preset current threshold, determine the current adjustment parameter as a third preset adjustment parameter; the value range of the third preset adjustment parameter K3 is: 0 < K3 < 1.

6. The vehicle charging current regulation method according to claim 1, characterized in that, Determining a current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter includes: Calculate the current current difference between the current target charging current and the current actual charging current; Determine the current requested current target value based on a first calculation formula according to the current current difference, the current requested charging current, and the current adjustment parameter; the first calculation formula is: I r (t + 1)= I r (t)+ k × I d Wherein, I r (t + 1) is the current requested current target value, I r (t) is the current requested charging current, k is the current adjustment parameter, I d is the current current difference.

7. A vehicle charging current regulating device, characterized in that, The vehicle includes an in-vehicle battery, and the in-vehicle battery is charged through a charging pile; the vehicle charging current adjustment device includes: A parameter acquisition module, configured to obtain in real time the target charging current of the in-vehicle battery, the actual charging current of the in-vehicle battery, and the requested charging current sent to the charging pile; An adjustment parameter determination module, configured to determine a current adjustment parameter according to the current target charging current of the vehicle-mounted battery and the current actual charging current of the vehicle-mounted battery; A requested current target value determination module, configured to determine a current requested current target value according to the current target charging current, the current actual charging current, the current requested charging current, and the current adjustment parameter; A requested charging current adjustment module, configured to adjust the current requested charging current sent to the charging pile to the current requested current target value.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which are used to implement the vehicle charging current adjustment method according to any one of claims 1-6 when executed by a processor.

9. A vehicle, characterized in that, Comprising: A vehicle frame, a vehicle-mounted battery and a controller disposed within the vehicle frame; The controller is configured to execute the vehicle charging current adjustment method according to any one of claims 1-6.

10. A vehicle charging system, characterized in that, Comprising: The vehicle and the charging pile according to claim 9; The charging pile includes a communication module; the communication module of the charging pile is communicatively connected to the controller in the vehicle; the charging signal output end of the charging pile is electrically connected to the charging signal input end of the vehicle.

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