Charging control method and apparatus, device, and storage medium

Abstract

Provided are a charging control method and apparatus, a device, and a storage medium. The charging control method comprises: when an input current is greater than or equal to an overcurrent fault threshold for a duration greater than a first preset duration, a charging control apparatus (11) determining a reduction parameter of a required charging current of a battery (12) of a vehicle, the input current being a current flowing into the battery; the charging control apparatus adjusting the required charging current of the battery on the basis of the reduction parameter to obtain a first required charging current, the first required charging current being less than the required charging current before the adjustment; and sending the first required charging current to a charging pile (15) for charging the vehicle, so that the charging pile adjusts an output current of the charging pile on the basis of the first required charging current until the input current is less than the overcurrent fault threshold, thereby avoiding the safety risk of overcurrent of the input current.

Description

[0001] The present disclosure claims priority to Chinese Patent Application No. 202410231090.9, filed on February 29, 2024, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the field of automotive technologies, and in particular, to a charging control method, an apparatus, a device, and a storage medium. BACKGROUND

[0003] With a gradual reduction of fossil fuels and an increasing severity of environmental problems, development of new energy sources has become an inevitable trend, and new energy vehicles have also become a development direction of an automotive industry. Against this backdrop, various automotive enterprises are developing their own new energy vehicle technologies. A charging issue is a widely concerned subject, and charging safety has become one of basic requirements for people's new energy vehicles. SUMMARY

[0004] The present disclosure provides a charging control method, an apparatus, a device, and a storage medium for controlling charging of a battery of a vehicle, thereby reducing a safety risk of current overcurrent.

[0005] In a first aspect, a charging control method is provided. The method includes: determining, by a charging control apparatus, a reduction parameter for a charging demand current of a battery of a vehicle, in a case where an input current is greater than or equal to an overcurrent fault threshold and a duration is greater than a first preset duration, where the input current is a current flowing into the battery; adjusting, by a charging control apparatus, the charging demand current of the battery, based on the reduction parameter, to obtain a first charging demand current, where the first charging demand current is less than the charging demand current before adjustment; and sending the first charging demand current to a charging pile for charging the vehicle, so that the charging pile adjusts an output current of the charging pile, according to the first charging demand current, until the input current is less than the overcurrent fault threshold.

[0006] In the charging control method provided by some embodiments of the present disclosure, in a case where it is determined that the current flowing into the battery is greater than or equal to the overcurrent fault threshold, in order to avoid a charging safety problem of charging overcurrent, the reduction parameter of the battery is determined, and the charging demand current of the battery is further adjusted, according to the reduction parameter, to obtain the first charging demand current, and the first charging demand current is sent to the charging pile, so that the charging pile adjusts, according to the received first charging demand current, an output current of the charging pile for charging the battery of the vehicle, thereby avoiding the safety risk of input current overcurrent.

[0007] In an implementation, after obtaining the first charging demand current, the charging control method further includes: determining a second charging demand current according to a remaining capacity of the battery, where the second charging demand current is configured to characterize a charging demand current of the battery at a current moment; and sending the second charging demand current to the charging pile, in a case where the second charging demand current is less than the first charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the second charging demand current, until the input current is less than the overcurrent fault threshold.

[0008] In the charging control method provided by some embodiments of the present disclosure, it is possible to avoid that the first charging demand current obtained, after the charging control apparatus adjusts the charging demand current of the battery, is still greater than an actual charging demand current of the battery at a current moment, thereby still having a risk of overcurrent fault.

[0009] In an implementation, the determining the reduction parameter for the charging demand current of the battery of the vehicle includes: determining a product of the input current and a preset reduction ratio as the reduction parameter.

[0010] In some embodiments of the present disclosure, an implementation method for determining the reduction parameter is provided.

[0011] In an implementation, the determining the reduction parameter for the charging demand current of the battery of the vehicle includes: determining a first difference between the input current and the overcurrent fault threshold; determining a second difference between a second preset duration and the first preset duration, where the second preset duration is a confirmation duration for a battery overcurrent fault; and determining the reduction parameter according to the first difference and the second difference.

[0012] In some embodiments of the present disclosure, another implementation method for determining the reduction parameter is provided, which can ensure that the output current of the charging pile is reduced before the user perceives the battery overcurrent fault, thereby ensuring user experience.

[0013] In an implementation, the charging control method further includes: determining an output current of the battery according to a power consumption power of the vehicle and a voltage of the battery; determining a third difference between the charging demand current of the battery and the output current of the battery; adjusting the charging demand current of the battery, based on a preset increase parameter, to obtain a third charging demand current, in a case where the input current is less than the third difference, where the third charging demand current is greater than the charging demand current before adjustment; and sending the third charging demand current to the charging pile, so that the charging pile adjusts the output current of the charging pile, according to the third charging demand current, until the input current is greater than or equal to the third difference.

[0014] In some embodiments of the present disclosure, it is possible to avoid excessively low charging efficiency of the battery after reducing the charging demand current of the battery, and increase the charging demand current by using the preset increase parameter to improve the charging efficiency of the battery.

[0015] In an implementation, the charging control method further includes: obtaining a fourth charging demand current, where the fourth charging demand current is an initial charging demand current of the battery upon the vehicle is connected to the charging pile to start charging; and sending the fourth charging demand current to the charging pile, in a case where the fourth charging demand current is less than the third charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the fourth charging demand current, until the input current is greater than or equal to the third difference.

[0016] In the charging control method provided by some embodiments of the present disclosure, it is achieved that upon increasing the charging demand current of the battery, it is necessary to determine whether the adjusted charging demand current is greater than the charging demand current upon initially connected to the charging pile, thereby ensuring that the charging pile does not adjust the output current according to a current exceeding the initial charging demand current, thus reducing the risk of battery overcurrent fault.

[0017] In an implementation, the charging control method further includes: sending a reduction indication message to the charging pile, where the reduction indication message includes a reduction identifier and a first charging demand current value; where the reduction identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the first charging demand current value, and the first charging demand current value is the first charging demand current or the second charging demand current.

[0018] In an implementation, the charging control method further includes: sending an increase indication message to the charging pile, where the increase indication message includes an increase identifier and a second charging demand current value; where the increase identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the second charging demand current value, and the second charging demand current value is the third charging demand current or the fourth charging demand current.

[0019] In a second aspect, a charging control apparatus is provided. The charging control apparatus includes a determination unit, a processing unit, and a sending unit. The determination unit is configured to: determine a reduction parameter for a charging demand current of a battery of a vehicle, in a case where an input current is greater than or equal to an overcurrent fault threshold and a duration is greater than a first preset duration, where the input current is a current flowing into the battery. The processing unit is configured to: adjust the charging demand current of the battery, based on the reduction parameter, to obtain a first charging demand current, where the first charging demand current is less than the charging demand current before adjustment. The sending unit is configured to: send the first charging demand current to a charging pile for charging the vehicle, so that the charging pile adjusts an output current of the charging pile, according to the first charging demand current, until the input current is less than the overcurrent fault threshold.

[0020] In an implementation, the determination unit is further configured to: determine a second charging demand current according to a remaining capacity of the battery, where the second charging demand current is configured to characterize a charging demand current of the battery at a current moment. The sending unit is further configured to: send the second charging demand current to the charging pile, in a case where the second charging demand current is less than the first charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the second charging demand current, until the input current is less than the overcurrent fault threshold.

[0021] In an implementation, the determination unit is configured to determine a product of the input current and a preset reduction ratio as the reduction parameter.

[0022] In an implementation, the determination unit is configured to determine a first difference between the input current and the overcurrent fault threshold; determine a second difference between a second preset duration and the first preset duration, where the second preset duration is a confirmation duration for a battery overcurrent fault; and determine the reduction parameter according to the first difference and the second difference.

[0023] In an implementation, the determination unit is further configured to: determine an output current of the battery according to a power consumption power of the vehicle and a voltage of the battery. The determination unit is further configured to: determine a third difference between the charging demand current of the battery and the output current of the battery. The processing unit is further configured to: adjust the charging demand current of the battery, based on a preset increase parameter, to obtain a third charging demand current, in a case where the input current is less than the third difference, where the third charging demand current is greater than the charging demand current before adjustment. The sending unit is further configured to: send the third charging demand current to the charging pile, so that the charging pile adjusts the output current of the charging pile, according to the third charging demand current, until the input current is greater than or equal to the third difference.

[0024] In an implementation, the charging control apparatus further includes an acquisition unit. The acquisition unit is configured to obtain a fourth charging demand current, where the fourth charging demand current is an initial charging demand current of the battery upon the vehicle is connected to the charging pile to start charging. The sending unit is further configured to: send the fourth charging demand current to the charging pile, in a case where the fourth charging demand current is less than the third charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the fourth charging demand current, until the input current is greater than or equal to the third difference.

[0025] In an implementation, the sending unit is further configured to: send a reduction indication message to the charging pile, where the reduction indication message includes a reduction identifier and a first charging demand current value; where the reduction identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the first charging demand current value, and the first charging demand current value is the first charging demand current or the second charging demand current.

[0026] In an implementation, the sending unit is further configured to: send an increase indication message to the charging pile, where the increase indication message includes an increase identifier and a second charging demand current value; where the increase identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the second charging demand current value, and the second charging demand current value is the third charging demand current or the fourth charging demand current.

[0027] In a third aspect, a charging control device is provided, deployed in a vehicle. The charging control device includes a memory and a processor, where the memory and the processor are coupled to each other; the memory is configured to store computer program code, where the computer program code includes computer instructions; the computer instructions, upon being executed by the processor, enable the charging control device to perform the charging control method according to the first aspect and any implementation thereof.

[0028] In a fourth aspect, a computer-readable storage medium is provided. The computer-readable storage medium has instructions stored therein, and the instructions, upon being executed on a charging control device, enable the charging control device to perform the charging control method described above.

[0029] In a fifth aspect, a battery management system is provided, and the battery management system is deployed in a vehicle. The battery management system is configured to perform the charging control method described above.

[0030] In a sixth aspect, a vehicle is provided. The vehicle includes the charging control device described above, or the vehicle includes the battery management system described above.

[0031] In a seventh aspect, a computer program product is provided, where the computer program product includes computer instructions, and the computer instructions, upon being executed on a charging control device, enable the charging control device to perform the charging control method described above.

[0032] Some embodiments of the present disclosure have the following beneficial effects: (1) In the charging control method provided by some embodiments of the present disclosure, in a case where it is determined that the current flowing into the battery is greater than or equal to the overcurrent fault threshold, in order to avoid the charging safety problem of charging overcurrent, the reduction parameter of the battery is determined, and the charging demand current of the battery is further adjusted, according to the reduction parameter, to obtain the first charging demand current, and the first charging demand current is sent to the charging pile, so that the charging pile adjusts, according to the received first charging demand current, an output current of the charging pile for charging the battery of the vehicle, thereby avoiding the safety risk of input current overcurrent. (2) In the charging control method provided by some embodiments of the present disclosure, it is possible to avoid that the first charging demand current obtained, after the charging control apparatus adjusts the charging demand current of the battery, is still greater than an actual charging demand current of the battery at a current moment, thereby still having a risk of overcurrent fault. (3) In the charging control method provided by some embodiments of the present disclosure, it is possible to ensure that the output current of the charging pile is reduced before the user perceives the battery overcurrent fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG. 1 is a schematic diagram of a charging control system according to some embodiments.

[0034] FIG. 2 is a flowchart of a charging control method according to some embodiments.

[0035] FIG. 3 is a flowchart of another charging control method according to some embodiments.

[0036] FIG. 4 is a flowchart of yet another charging control method according to some embodiments.

[0037] FIG. 5 is a flowchart of yet another charging control method according to some embodiments.

[0038] FIG. 6 is a block diagram of a charging control apparatus according to some embodiments.

[0039] FIG. 7 is a block diagram of a charging control device according to some embodiments.

[0040] FIG. 8 is a block diagram of a vehicle according to some embodiments.

[0041] FIG. 9 is a block diagram of another vehicle according to some embodiments. DETAILED DESCRIPTION

[0042] The implementations of the present disclosure will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art may easily understand other advantages and effects of the present disclosure from a content disclosed in the present specification. The present disclosure may also be implemented or applied through other different specific implementations, and various details in the present specification may also be modified or changed based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be understood that the preferred embodiments are for illustrating the present disclosure only, rather than intended to limit the protection scope of the present disclosure.

[0043] It should be noted that the diagrams provided in the following embodiments only illustrate a basic concept of the present disclosure in a schematic manner, so that the drawings only show components related to the present disclosure rather than a number, a shape, and a size of the components in actual implementation. The form, number, and proportion of each component in actual implementation may be arbitrarily changed, and a component layout may also be more complicated.

[0044] In the description of some embodiments, unless otherwise specified, " / " indicates the meaning of "or", for example, A / B may indicate A or B. "And / or" herein is merely an association relationship describing associated objects, indicating that three relationships may exist, for example, A and / or B may indicate three situations, that is, A existing alone, A and B existing simultaneously, and B existing alone. In addition, "at least one" and "multiple / a (the) plurality of" mean two or more. Wordings such as "first" and "second" etc. do not limit the number or execution order, and the wordings such as "first", "second", etc. do not limit the defined objects must be different from each other.

[0045] With a gradual reduction of fossil fuels and an increasing severity of environmental problems, development of new energy sources has become an inevitable trend, and new energy vehicles have also become a development direction of an automotive industry. Against this backdrop, various automotive enterprises are developing their own new energy vehicle technologies. A charging issue is a widely concerned subject, and charging safety has become one of basic requirements for people's new energy vehicles. Currently, due to a wide variety of DC (Direct Current) charging piles on the market, it is easy to have a mismatch between a pile-side output current and a vehicle-side demand current, which leads to a safety risk of overcurrent of a vehicle's charging input current.

[0046] In related art, in order to avoid battery overcurrent charging of the vehicle, generally, a relay is controlled to disconnect, after detecting that a charging current is greater than a DC charging overcurrent threshold, to ensure a safety of a battery during vehicle charging. However, this results in an inability to continue charging the battery of the vehicle, failing to meet a demand of a user for charging the battery of the vehicle.

[0047] To solve the above problem, some embodiments of the present disclosure provide a charging control method, an apparatus, a device, and a storage medium. The charging control apparatus determines a reduction parameter for a charging demand current of a battery of a vehicle, in a case where an input current is greater than or equal to an overcurrent fault threshold and a duration is greater than a first preset duration; where the input current is a current flowing into the battery. The charging control apparatus adjusts the charging demand current of the battery, based on the reduction parameter, to obtain a first charging demand current; where the first charging demand current is less than the charging demand current before adjustment; and sends the first charging demand current to a charging pile for charging the vehicle, so that the charging pile adjusts an output current of the charging pile, according to the first charging demand current, until the input current is less than the overcurrent fault threshold.

[0048] In this way, in the charging control method provided by some embodiments of the present disclosure, in a case where it is determined that the current flowing into the battery is greater than or equal to the overcurrent fault threshold, in order to avoid a charging safety problem caused by charging overcurrent, the reduction parameter of the battery is determined, and the charging demand current of the battery is adjusted, according to the reduction parameter, to obtain the first charging demand current, and the first charging demand current is sent to the charging pile, so that the charging pile adjusts the output current of the charging pile, according to the received first charging demand current, to charge the battery of the vehicle, thereby avoiding a safety risk caused by input current overcurrent.

[0049] FIG. 1 shows a charging control system 10. The charging control method provided by some embodiments of the present disclosure may be applied to the charging control system 10 as shown in FIG. 1 to avoid the safety risk caused by input current overcurrent. As shown in FIG. 1, the charging control system 10 includes a charging control apparatus 11, a battery 12, a battery management system (BMS) 13, a vehicle 14, and a charging pile 15.

[0050] The charging control apparatus11 is connected to the BMS 13, and the BMS 13 is connected to the battery 12. The above connections may be in a wired manner or in a wireless manner, the present disclosure is not limited thereto.

[0051] It should be noted that in the charging control system 10, the charging control apparatus 11, the battery 12, and the BMS 13 are deployed in the vehicle 14, and the charging pile 15 is connected to the battery 12 of the vehicle 14 through a charging cable, so as to charge the battery 12.

[0052] In addition, the charging control apparatus 11 may be integrated into the BMS 13 or may be provided independently of the BMS 13. For convenience of describing an interaction between various devices, some embodiments of the present disclosure take an example in which the charging control apparatus 11 and the BMS 13 are independently provided to illustrate the charging control method provided by some embodiments of the present disclosure.

[0053] The BMS 13 is configured to manage a charging and a discharging of the battery 12.

[0054] The charging control apparatus 11 may be configured to obtain an input current of the battery from the BMS 13, and the charging control apparatus 11 may further be configured to obtain a remaining capacity of the battery from the BMS 13.

[0055] The charging pile 15 may be configured to connect to the battery 12 of the vehicle 14 through a charging cable, and adjust an output current to charge the battery 12 in response to a received charging demand current.

[0056] The charging control apparatus 11 may be configured to determine a reduction parameter for a charging demand current of the battery 12 of the vehicle 14 in a case where an input current is greater than or equal to an overcurrent fault threshold and a duration is greater than a first preset duration. Herein, the input current is a current flowing into the battery 12.

[0057] The charging control apparatus 11 may further be configured to adjust the charging demand current of the battery 12, based on the reduction parameter, to obtain a first charging demand current. Herein, the first charging demand current is less than the charging demand current before adjustment.

[0058] The charging control apparatus 11 may further be configured to send the first charging demand current to the charging pile 15 for charging the vehicle 14, so that the charging pile 15 adjusts an output current of the charging pile 15, according to the first charging demand current, until the input current is less than the overcurrent fault threshold.

[0059] In some embodiments, the charging control apparatus 11 may further be configured to determine an output current of the battery 12 according to a power consumption power of the vehicle 14 and a voltage of the battery 12.

[0060] The charging control apparatus 11 may further be configured to determine a third difference between the charging demand current of the battery 12 and the output current of the battery 12.

[0061] The charging control apparatus 11 may further be configured to adjust the charging demand current of the battery 12, based on a preset increase parameter, to obtain a third charging demand current, in a case where the input current is less than the third difference.

[0062] The third charging demand current is greater than the charging demand current before adjustment.

[0063] The charging control apparatus 11 may further be configured to send the third charging demand current to the charging pile 15, so that the charging pile 15 adjusts the output current of the charging pile, according to the third charging demand current, until the input current is greater than or equal to the third difference.

[0064] FIG. 2 is a flowchart of a charging control method according to some embodiments. In some embodiments, the above charging control method may be applied to the charging control apparatus 11 in the charging control system 10 shown in FIG. 1. Hereinafter, some embodiments of the present disclosure will describe the above charging control method by taking an example in which the charging control method is applied to the charging control apparatus 11.

[0065] As shown in FIG. 2, the charging control method provided by some embodiments of the present disclosure at least includes S201 to S204.

[0066] In S201: the charging control device determines whether an input current is greater than or equal to an overcurrent fault threshold.

[0067] For example, the input current is a current flowing into the battery.

[0068] As an implementation, the charging control apparatus obtains the current flowing into the battery through the BMS, determines the obtained current value as the input current, and obtains an overcurrent fault threshold preset in the charging control apparatus. The charging control apparatus determines a magnitude relationship between the input current and the overcurrent fault threshold.

[0069] It should be noted that the overcurrent fault threshold may be preset in the charging control apparatus by an operation and maintenance personnel of the charging control system according to a performance of the battery. For example, the overcurrent fault threshold may be set as a fixed value, or the overcurrent fault threshold may be set as a value having a mapping relationship with the remaining capacity of the battery, where remaining capacities of different stages correspond to different overcurrent fault thresholds, the present disclosure is not limited thereto.

[0070] In S202: the charging control apparatus determines a reduction parameter for a charging demand current of a battery of a vehicle, in a case where the input current is greater than or equal to the overcurrent fault threshold and a duration is greater than a first preset duration.

[0071] As an implementation, based on a determination of a magnitude relationship between the input current and the overcurrent fault threshold in S201, in a case where the input current is greater than or equal to the overcurrent fault threshold, the charging control apparatus starts timing, and after a timed duration exceeds the first preset duration, determines the reduction parameter for the charging demand current of the battery of the vehicle.

[0072] In some embodiments, the charging control apparatus is stored with a preset reduction ratio. The charging control apparatus determining the reduction parameter for the charging demand current of the battery of the vehicle may be that: the charging control apparatus determines a product of the input current and a preset reduction ratio as the reduction parameter.

[0073] It should be noted that in this case, the reduction parameter is a reduction current value. The preset reduction ratio may be preset in the charging control apparatus through the operation and maintenance personnel of the charging control system according to the performance of the battery, the present disclosure is not limited thereto.

[0074] In some embodiments, the charging control apparatus determining the reduction parameter for the charging demand current of the battery of the vehicle may further be that: the charging control apparatus determines a first difference between the input current and the overcurrent fault threshold; and determines a second difference between a second preset duration and the first preset duration.

[0075] The second preset duration is a confirmation duration for a battery overcurrent fault, and the second preset duration may be preset in the charging control apparatus through the operation and maintenance personnel of the charging control system, the present disclosure is not limited thereto.

[0076] The charging control apparatus determines the reduction parameter according to the first difference and the second difference.

[0077] The first difference is a difference between a current input current and the overcurrent fault threshold, that is, a current that needs to be reduced; and the second difference is a difference between the second preset duration and the first preset duration, that is, a duration between determining an existence of an overcurrent risk and feeding back a current fault to a user. The charging control apparatus calculates a ratio of the first difference to the second difference to obtain a current reduction speed required to reduce a current of the first difference within the duration of the second difference, that is, the reduction parameter is a reduction speed of the charging demand current.

[0078] In this way, by reducing the charging demand current by the first difference within the duration of the second difference, the charging pile, after receiving the reduced charging demand current, charges a battery of a vehicle with a lower output current, thereby reducing the risk of overcurrent fault during battery charging.

[0079] In some embodiments, the charging control apparatus determines the product of the input current and the preset reduction ratio divided by the second difference to obtain a first reduction speed; and the charging control apparatus determines a ratio of the first difference to the second difference to obtain a second reduction speed. The charging control apparatus determines the reduction parameter as the first reduction speed, in a case where the first reduction speed is greater than the second reduction speed; and the charging control device determines the reduction parameter as the second reduction speed, in a case where the first reduction speed is less than the second reduction speed.

[0080] In addition, the charging control apparatus is further provided with a preset third reduction speed. The charging control apparatus determines, after obtaining the first reduction speed and the second reduction speed, a largest reduction speed among the first reduction speed, the second reduction speed, and the third reduction speed as the reduction parameter.

[0081] In S203: the charging control apparatus adjusts the charging demand current of the battery, based on the reduction parameter, to obtain a first charging demand current.

[0082] For example, the first charging demand current is less than the charging demand current before adjustment.

[0083] As an implementation, the charging control apparatus adjusts the charging demand current of the battery, based on the reduction parameter determined in S202, to obtain the first charging demand current.

[0084] For example, if the reduction parameter is a current value, the charging control apparatus subtracts the reduction parameter from a current charging demand current of the battery to obtain the first charging demand current.

[0085] If the reduction parameter is a current reduction speed, the charging control apparatus reduces the charging demand current of the battery according to a speed indicated by the reduction parameter, based on the charging demand current of the battery, and after the duration of the second difference, obtains the first charging demand current.

[0086] In S204: the charging control apparatus sends the first charging demand current to the charging pile for charging the vehicle, so that the charging pile adjusts an output current of the charging pile, according to the first charging demand current, until the input current is less than the overcurrent fault threshold.

[0087] As an implementation, the charging control apparatus sends, after obtaining the first charging demand current based on S203, the first charging demand current to the charging pile for charging the vehicle.

[0088] Correspondingly, after receiving the first charging demand current sent from the charging control apparatus, the charging pile adjusts an output current of an output terminal of the charging pile, according to the first charging demand current, to reduce the input current flowing into the battery.

[0089] The charging control apparatus determines, after the charging pile adjusts the output current, whether the input current is less than the overcurrent fault threshold. If not, the charging control apparatus continues to adjust the charging demand current of the battery according to the reduction parameter; if yes, the charging control apparatus stops adjusting the charging demand current of the battery to avoid an excessive drop in input current leading to reduced charging efficiency.

[0090] In some embodiments, the charging control apparatus sending the first charging demand current to the charging pile may be that: the charging control apparatus sends a reduction indication message to the charging pile.

[0091] The reduction indication message includes a reduction identifier and a first charging demand current value; where the reduction identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the first charging demand current value, and the first charging demand current value is a current value of the first charging demand current.

[0092] For example, the reduction indication message may be: IdownSts (reduction identifier) = 1; I (first charging demand current value) = first charging demand current.

[0093] In some embodiments, to avoid that the first charging demand current obtained, after the charging control apparatus adjusts the charging demand current of the battery, is still greater than an actual charging demand current of the battery at a current moment, thereby still having the risk of overcurrent fault, the charging control method provided by some embodiments of the present disclosure, after obtaining the first charging demand current, as shown in FIG. 3, further includes S301 to S302.

[0094] In S301: the charging control apparatus determines a second charging demand current according to a remaining capacity of the battery.

[0095] For example, the second charging demand current is configured to characterize the charging demand current of the battery at a current moment.

[0096] As an implementation, the charging control apparatus obtains the remaining capacity of the battery from the BMS, and further determines a remaining capacity interval (e.g., range) into which the remaining capacity of the battery falls based on a mapping relationship between the remaining capacity interval and the charging demand current. The charging control apparatus determines the charging demand current of the battery at a current moment, that is, the second charging demand current, according to the remaining capacity interval into which the battery falls.

[0097] It should be noted that the mapping relationship between the remaining capacity intervals and the charging demand current may be preset in the charging control apparatus through the operation and maintenance personnel of the charging control system, the present disclosure is not limited thereto.

[0098] In S302: the charging control apparatus sends the second charging demand current to the charging pile, in a case where the second charging demand current is less than the first charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the second charging demand current, until the input current is less than the overcurrent fault threshold.

[0099] As an implementation, the charging control apparatus determines, after obtaining the second charging demand current based on S301, a magnitude relationship between the second charging demand current and the first charging demand current, and sends the second charging demand current to the charging pile for charging the vehicle, in a case where the second charging demand current is less than the first charging demand current.

[0100] Correspondingly, after receiving the second charging demand current sent from the charging control apparatus, the charging pile adjusts the output current of the output terminal of the charging pile, according to the second charging demand current, to reduce the input current flowing into the battery.

[0101] The charging control apparatus determines, after the charging pile adjusts the output current, whether the input current is less than the overcurrent fault threshold. If not, the charging control apparatus continues to adjust the charging demand current of the battery according to the reduction parameter; if yes, the charging control apparatus stops adjusting the charging demand current of the battery to avoid an excessive drop in input current leading to reduced charging efficiency.

[0102] In some embodiments, the charging control apparatus sending the second charging demand current to the charging pile may be that: the charging control apparatus sends a reduction indication message to the charging pile.

[0103] The reduction indication message includes a reduction identifier and a first charging demand current value; where the reduction identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the first charging demand current value, and the first charging demand current value is a current value of the second charging demand current.

[0104] For example, the reduction indication message may be: IdownSts (reduction identifier) = 1; I (first charging demand current value) = second charging demand current.

[0105] In some embodiments, to avoid that charging efficiency of the battery is reduced after the charging control apparatus reduces the charging demand current of the battery, thereby increasing a charging duration for the user, as shown in FIG. 4, the charging control method provided by some embodiments of the present disclosure further includes S401 to S404.

[0106] In S401: the charging control apparatus determines an output current of the battery according to a power consumption power of the vehicle and a voltage of the battery.

[0107] As an implementation, the charging control apparatus obtains the current power consumption power of the vehicle and a total voltage of the battery from the BMS, and determines a ratio of the power consumption power to the battery voltage as the output current of the battery.

[0108] In S402: the charging control apparatus determines a third difference between the charging demand current of the battery and the output current of the battery.

[0109] As an implementation, the charging control apparatus subtracts the output current of the battery determined in S401 from the charging demand current of the battery, last sent to the charging pile before a current moment, to obtain the third difference, that is, the third difference may characterize a current used for charging the battery to a certain extent.

[0110] In S403: the charging control apparatus adjusts the charging demand current of the battery, based on a preset increase parameter, to obtain a third charging demand current, in a case where the input current is less than the third difference.

[0111] For example, the third charging demand current is greater than the charging demand current before adjustment.

[0112] As an implementation, the charging control apparatus obtains the input current flowing into the battery at the current moment from the BMS, compares the obtained input current with the third difference obtained based on S402, and retrieves, in a case where the input current is less than the third difference, the preset increase parameter stored in the charging control apparatus to adjust the charging demand current of the battery, thereby obtaining the third charging demand current.

[0113] It should be noted that the preset increase parameter may be a current value or the preset increase parameter may also be a current increase speed. The preset increase parameter may be preset in the charging control apparatus through the operation and maintenance personnel of the charging control system, the present disclosure is not limited thereto.

[0114] In S404: the charging control apparatus sends the third charging demand current to the charging pile, so that the charging pile adjusts the output current of the charging pile, according to the third charging demand current, until the input current is greater than or equal to the third difference.

[0115] As an implementation, the charging control apparatus sends, after obtaining the third charging demand current based on S403, the third charging demand current to the charging pile for charging the vehicle.

[0116] Correspondingly, the charging pile adjusts, after receiving the third charging demand current sent from the charging control apparatus, the output current of the output terminal of the charging pile, according to the third charging demand current, to increase the input current flowing into the battery.

[0117] In some embodiments, the charging control apparatus determines, after the charging pile adjusts the output current, whether the input current is greater than the third difference. If not, the charging control apparatus continues to adjust the charging demand current of the battery according to the preset increase parameter; if yes, the charging control apparatus stops adjusting the charging demand current of the battery to avoid an excessively high input current leading to an increased risk of charging overcurrent.

[0118] In some embodiments, the charging control apparatus sending the third charging demand current to the charging pile may be that: the charging control apparatus sends an increase indication message to the charging pile.

[0119] The increase indication message includes an increase identifier and a second charging demand current value; where the increase identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the second charging demand current value, and the second charging demand current value is a current value of the third charging demand current.

[0120] For example, the increase indication message may be: IupSts (increase identifier) = 1; I (second charging demand current value) = third charging demand current.

[0121] In some embodiments, to avoid that the third charging demand current obtained, after the charging control apparatus adjusts the charging demand current of the battery, is excessively high, exceeding the charging demand current upon initially connected to the charging pile, thereby still having the risk of overcurrent fault, the charging control method provided by some embodiments of the present disclosure, after obtaining the third charging demand current, as shown in FIG. 5, further includes S501 to S502.

[0122] In S501: the charging control apparatus obtains a fourth charging demand current.

[0123] The fourth charging demand current is an initial charging demand current of the battery upon the vehicle is connected to the charging pile to start charging.

[0124] In S502: the charging control apparatus sends, in a case where the fourth charging demand current is less than the third charging demand current, the fourth charging demand current to the charging pile, so that the charging pile adjusts the output current of the charging pile, according to the fourth charging demand current, until the input current is greater than or equal to the third difference.

[0125] As an implementation, the charging control apparatus determines, after obtaining the fourth charging demand current based on S501, a magnitude relationship between the fourth charging demand current and the third charging demand current, and sends the fourth charging demand current to the charging pile for charging the vehicle, in a case where the fourth charging demand current is less than the third charging demand current.

[0126] Correspondingly, the charging pile adjusts, after receiving the fourth charging demand current sent from the charging control apparatus, an output current of the output terminal of the charging pile, according to the fourth charging demand current, to increase the input current flowing into the battery.

[0127] The charging control apparatus determines, after the charging pile adjusts the output current, whether the input current is greater than the third difference. If not, the charging control apparatus continues to adjust the charging demand current of the battery according to the preset increase parameter; if yes, the charging control apparatus stops adjusting the charging demand current of the battery to avoid an excessively high input current leading to an increased risk of charging overcurrent.

[0128] In some embodiments, the charging control apparatus sending the fourth charging demand current to the charging pile may be that: the charging control apparatus sends an increase indication message to the charging pile.

[0129] The increase indication message includes an increase identifier and a second charging demand current value; where the increase identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the second charging demand current value, and the second charging demand current value is a current value of the fourth charging demand current.

[0130] For example, the reduction indication message may be: IupSts (increase identifier) = 1; I (second charging demand current value) = fourth charging demand current.

[0131] It can be understood that some embodiments of the present disclosure, after reducing the charging demand current to eliminate the risk of overcurrent fault, further check the input current to determine whether the reduction is excessively large, causing the charging efficiency of the battery to be excessively low. Moreover, in a case where the charging efficiency is low, the charging demand current is increased by using the preset increase parameter to improve the charging efficiency of the battery. In addition, it is controlled that the increased charging demand current does not exceed the initial charging demand current.

[0132] The above mainly describes the solutions provided by some embodiments of the present disclosure from the perspective of methods. In order to realize the above functions, the charging control apparatus or the charging control device includes corresponding hardware structures and / or software modules for performing each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, some embodiments of the present disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on a specific application and design constraint conditions of the technical solution. Professional technicians may use different methods for each specific application to implement the described functions, however, such implementation should not be considered beyond the scope of the present disclosure.

[0133] Some embodiments of the present disclosure may divide the functional modules of the charging control apparatus or the charging control device according to the above method. For example, the charging control apparatus or the charging control device may include various functional modules corresponding to each function, or two or more functions may be integrated into one processing module. The above integrated module may be implemented in a form of hardware or in a form of software functional modules. It should be noted that the division of modules in some embodiments of the present disclosure is schematic and is merely a logical function division, and there may be other division manners in actual implementation.

[0134] FIG. 6 is a block diagram of a charging control apparatus according to some embodiments. The charging control apparatus is configured to perform the above charging control method. As shown in FIG. 6, the charging control apparatus 11 includes a determination unit 601, a processing unit 602, and a sending unit 603.

[0135] The determination unit 601 is configured to: determine a reduction parameter for a charging demand current of a battery of a vehicle, in a case where an input current is greater than or equal to an overcurrent fault threshold and a duration is greater than a first preset duration, where the input current is a current flowing into the battery.

[0136] The processing unit 602 is configured to: adjust the charging demand current of the battery, based on the reduction parameter, to obtain a first charging demand current, where the first charging demand current is less than the charging demand current before adjustment.

[0137] The sending unit 603 is configured to: send the first charging demand current to a charging pile for charging the vehicle, so that the charging pile adjusts an output current of the charging pile, according to the first charging demand current, until the input current is less than the overcurrent fault threshold.

[0138] In some embodiments, the determination unit 601 is further configured to determine a second charging demand current according to a remaining capacity of the battery, where the second charging demand current is configured to characterize a charging demand current of the battery at a current moment.

[0139] The sending unit 603 is further configured to: send the second charging demand current to the charging pile, in a case where the second charging demand current is less than the first charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the second charging demand current, until the input current is less than the overcurrent fault threshold.

[0140] In some embodiments, the determination unit 601 is further configured to determine a product of the input current and a preset reduction ratio as the reduction parameter.

[0141] In some embodiments, the determination unit 601 is further configured to: determine a first difference between the input current and the overcurrent fault threshold; determine a second difference between a second preset duration and the first preset duration, where the second preset duration is a confirmation duration for a battery overcurrent fault; and determine the reduction parameter according to the first difference and the second difference.

[0142] In some embodiments, the determination unit 601 is further configured to: determine an output current of the battery according to a power consumption power of the vehicle and a voltage of the battery.

[0143] The determination unit 601 is further configured to: determine a third difference between the charging demand current of the battery and the output current of the battery.

[0144] The processing unit 602 is further configured to: adjust the charging demand current of the battery, based on a preset increase parameter, to obtain a third charging demand current, in a case where the input current is less than the third difference, where the third charging demand current is greater than the charging demand current before adjustment.

[0145] The sending unit 603 is further configured to: send the third charging demand current to the charging pile, so that the charging pile adjusts the output current of the charging pile, according to the third charging demand current, until the input current is greater than or equal to the third difference.

[0146] In some embodiments, as shown in FIG. 6, the charging control apparatus further includes an acquisition unit 604.

[0147] The acquisition unit 604 is configured to obtain a fourth charging demand current, where the fourth charging demand current is an initial charging demand current of the battery upon the vehicle is connected to the charging pile to start charging.

[0148] The sending unit 603 is configured to: send the fourth charging demand current to the charging pile, in a case where the fourth charging demand current is less than the third charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the fourth charging demand current, until the input current is greater than or equal to the third difference.

[0149] In some embodiments, the sending unit 603 is further configured to: send a reduction indication message to the charging pile, where the reduction indication message includes a reduction identifier and a first charging demand current value; where the reduction identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the first charging demand current value, and the first charging demand current value is the first charging demand current or a second charging demand current.

[0150] In some embodiments, the sending unit 603 is further configured to: send an increase indication message to the charging pile, where the increase indication message includes an increase identifier and a second charging demand current value; where the increase identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the second charging demand current value, and the second charging demand current value is the third charging demand current or a fourth charging demand current.

[0151] FIG. 7 is a block diagram of a charging control device according to some embodiments. As shown in FIG. 7, a charging control device 70 includes, but is not limited to: a processor 701 and a memory 702.

[0152] The memory 702 is configured to store instructions executable by the processor 701 as described above. It can be understood that the processor 701 is configured to execute the instructions, so as to implement the charging control method in the above embodiments.

[0153] It should be noted that those skilled in the art may understand that a structure of the charging control device shown in FIG. 7 does not constitute a limitation on the charging control device, and the charging control device may include more or fewer components than that shown in FIG. 7, or the charging control device may combine some components, or the charging control device may have different component arrangements.

[0154] The processor 701 is a control center of the charging control device, connects various parts of an entire charging control device using various interfaces and lines, and executes various functions and processes data of the charging control device by running or executing at least one of a software program or a module stored in the memory 702, and revoking data stored in the memory 702, thereby performing overall monitoring of the charging control device. The processor 701 may include one or more processing units.

[0155] In some embodiments, the processor 701 may integrate an application processor and a modem processor. The application processor mainly handles an operating system, a user interface, an application, etc., while the modem processor mainly handles wireless communications. It can be understood that the modem processor may not be integrated into the processor 701.

[0156] The memory 702 may be configured to store software programs and various data. The memory 702 may mainly include a program storage region and a data storage region. The program storage region may store an operating system, application programs required for at least one functional module (e.g., determination unit, processing unit, etc.), etc. In addition, the memory 702 may include a high-speed random access memory, and the memory 702 may further include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

[0157] Some embodiments of the present disclosure further provide a computer-readable storage medium including instructions, for example, a memory 702 including instructions, and the instructions may be executed by the processor 701 of the charging control device 70, so as to implement the above charging control method.

[0158] In actual implementation, functions of the determination unit 601, the processing unit 602, the sending unit 603, and the acquisition unit 604 in FIG. 6 each may be implemented by the processor 701 in FIG. 7 revoking computer programs stored in the memory 702. An execution process may refer to the description of the charging control method section above, and details will not be repeated herein.

[0159] In some embodiments, the computer-readable storage medium may be a non-transitory computer-readable storage medium, for example, the non-transitory computer-readable storage medium may be a read only memory (ROM), a random access memory (RAM), a compact disc read only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0160] As shown in FIG. 8 and FIG. 9, some embodiments of the present disclosure further provide a vehicle 14 including the above charging control device 70 or a vehicle 14 including the above battery management system 13.

[0161] Some embodiments of the present disclosure further provide a computer program product including one or more instructions, and the instructions may be executed by the processor 701 of the charging control device 70, so as to complete the charging control method in the above embodiments.

[0162] It should be noted that upon the instructions in the above computer-readable storage medium or the one or more instructions in the computer program product are executed by the processor of the charging control device, the various processes of the above charging control method embodiments are implemented, and a same technical effect as the above charging control method may be achieved. To avoid repetition, details will not be repeated herein.

[0163] Through the description of the above implementations, those skilled in the art may clearly understand that, for convenience and brevity of description, only the division of the above functional modules is used as an example. In practical applications, the above functions may be allocated to different functional modules according to needs, that is, an internal structure of the apparatus is divided into different functional modules to complete all or a part of the functions described above.

[0164] In the several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely schematic. For example, the division of modules or units is merely a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another apparatus, or some features may be absent or some features may not be performed. Another point is that mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, apparatuses or units, and may be electrical, mechanical or other forms.

[0165] The units described as separate components may or may not be physically separate. The components displayed as units may be one physical unit or multiple physical units, that is, they may be located in one place, or may be distributed over multiple different places. Some or all of the units may be selected according to actual needs to achieve a purpose of the solution of this embodiment.

[0166] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated units may be implemented in a form of hardware or in a form of software functional units.

[0167] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a readable storage medium. Based on such understanding, the technical solution of some embodiments of the present disclosure essentially, or the part contributing to the related art, or all or a part of the technical solutions may be embodied in a form of a software product. The software product is stored in a storage medium, including one or more instructions for enabling a device (which may be a single chip microcomputer, a chip, etc.) or a processor to execute all or a part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: a USB flash disk (UFD), a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and other various media that may store program codes.

[0168] The above are merely specific implementations of the present disclosure, however, the protection scope of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present disclosure should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A charging control method, comprising:determining a reduction parameter for a charging demand current of a battery of a vehicle, in a case where an input current is greater than or equal to an overcurrent fault threshold and a duration is greater than a first preset duration, wherein the input current is a current flowing into the battery;adjusting the charging demand current of the battery, based on the reduction parameter, to obtain a first charging demand current, wherein the first charging demand current is less than the charging demand current before adjustment; andsending the first charging demand current to a charging pile for charging the vehicle, so that the charging pile adjusts an output current of the charging pile, according to the first charging demand current, until the input current is less than the overcurrent fault threshold.

2. The charging control method according to claim 1, wherein after obtaining the first charging demand current, the method further comprises:determining a second charging demand current according to a remaining capacity of the battery, wherein the second charging demand current is configured to characterize a charging demand current of the battery at a current moment; andsending the second charging demand current to the charging pile, in a case where the second charging demand current is less than the first charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the second charging demand current, until the input current is less than the overcurrent fault threshold.

3. The charging control method according to claim 1 or 2, wherein the determining the reduction parameter for the charging demand current of the battery of the vehicle comprises:determining a product of the input current and a preset reduction ratio as the reduction parameter.

4. The charging control method according to claim 1 or 2, wherein the determining the reduction parameter for the charging demand current of the battery of the vehicle comprises:determining a first difference between the input current and the overcurrent fault threshold;determining a second difference between a second preset duration and the first preset duration, wherein the second preset duration is a confirmation duration for a battery overcurrent fault; anddetermining the reduction parameter according to the first difference and the second difference.

5. The charging control method according to any one of claims 1 to 4, further comprising:determining an output current of the battery according to a power consumption power of the vehicle and a voltage of the battery;determining a third difference between the charging demand current of the battery and the output current of the battery;adjusting the charging demand current of the battery, based on a preset increase parameter, to obtain a third charging demand current, in a case where the input current is less than the third difference, wherein the third charging demand current is greater than the charging demand current before adjustment; andsending the third charging demand current to the charging pile, so that the charging pile adjusts the output current of the charging pile, according to the third charging demand current, until the input current is greater than or equal to the third difference.

6. The charging control method according to claim 5, further comprising:obtaining a fourth charging demand current, wherein the fourth charging demand current is an initial charging demand current of the battery upon the vehicle is connected to the charging pile to start charging; andsending the fourth charging demand current to the charging pile, in a case where thefourth charging demand current is less than the third charging demand current, so that the charging pile adjusts the output current of the charging pile, according to the fourth charging demand current, until the input current is greater than or equal to the third difference.

7. The charging control method according to claim 5 or 6, further comprising:sending an increase indication message to the charging pile, wherein the increase indication message includes an increase identifier and a second charging demand current value; wherein the increase identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the second charging demand current value, and the second charging demand current value is the third charging demand current or a fourth charging demand current.

8. The charging control method according to any one of claims 1 to 4, further comprising:sending a reduction indication message to the charging pile, wherein the reduction indication message includes a reduction identifier and a first charging demand current value; wherein the reduction identifier is configured to instruct the charging pile to adjust the output current of the charging pile according to the first charging demand current value, and the first charging demand current value is the first charging demand current or a second charging demand current.

9. A charging control apparatus, comprising:a determination unit, wherein the determination unit is configured to: determine a reduction parameter for a charging demand current of a battery of a vehicle, in a case where an input current is greater than or equal to an overcurrent fault threshold and a duration is greater than a first preset duration, wherein the input current is a current flowing into the battery;a processing unit, wherein the processing unit is configured to: adjust the charging demand current of the battery, based on the reduction parameter, to obtain a first charging demand current, wherein the first charging demand current is less than the chargingdemand current before adjustment; anda sending unit, wherein the sending unit is configured to: send the first charging demand current to a charging pile for charging the vehicle, so that the charging pile adjusts an output current of the charging pile, according to the first charging demand current, until the input current is less than the overcurrent fault threshold.

10. A charging control device, deployed in a vehicle, wherein the charging control device comprises a memory and a processor; whereinthe memory and the processor are coupled to each other;the memory is configured to store computer program code, wherein the computer program code includes computer instructions;the computer instructions, upon being executed by the processor, enable the charging control device to perform the charging control method according to any one of claims 1 to 8.

11. A computer-readable storage medium having instructions stored therein, wherein the instructions, upon being executed on a charging control device, enable the charging control device to perform the charging control method according to any one of claims 1 to 8.

12. A battery management system, deployed in a vehicle, wherein the battery management system is configured to perform the charging control method according to any one of claims 1 to 8.

13. A vehicle, comprising the charging control device according to claim 10, or the battery management system according to claim 12.

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