METHOD, APPARATUS AND DEVICE FOR CONTROLLING CHARGING AND DATA STORAGE MEDIA

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

Charging control method, device, equipment and storage medium

[0001] This application claims priority to Chinese patent application No. 202410231090.9, filed on February 29, 2024, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of automobile technology, and in particular to a charging control method, device, equipment, and storage medium. Background Art

[0003] With the dwindling supply of fossil fuels and the growing severity of environmental issues, the development of new energy vehicles has become a major trend, and new energy vehicles have become the development direction of the automotive industry. Against this backdrop, various automobile companies are developing their own new energy vehicle technologies. Charging issues are a topic of widespread concern, and charging safety has become one of the basic requirements for new energy vehicles. Summary of the Invention

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

[0005] In a first aspect, a charging control method is provided, comprising: a charging control device determining a downward adjustment parameter for a charging current requirement of a vehicle's battery when an input current is greater than or equal to an overcurrent fault threshold and persists for a duration greater than a first preset duration, where the input current is the current flowing into the battery. The charging control device adjusts the battery's charging current requirement based on the downward adjustment parameter to obtain a first charging current requirement, wherein the first charging current requirement is less than the charging current requirement before adjustment; and the charging control device transmits the first charging current requirement to a charging pile for charging the vehicle, causing the charging pile to adjust its output current based on the first charging current requirement until the input current is less than the overcurrent fault threshold.

[0006] In the charging control method provided in some embodiments of the present disclosure, when 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 battery's down-adjustment parameter is determined, and the battery's charging demand current is further adjusted according to the down-adjustment parameter to obtain a 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 to charge the vehicle's battery according to the received first charging demand current, thereby avoiding the safety risk of input current overcurrent.

[0007] In one embodiment, after obtaining the first charging demand current, the above-mentioned charging control method also includes: determining a second charging demand current based on the remaining power of the battery, and the second charging demand current is configured to represent the charging demand current of the battery at the current moment; when the second charging demand current is less than the first charging demand current, sending the second charging demand current to the charging pile, 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 in some embodiments of the present disclosure, it is possible to avoid the situation where, after the charging control device adjusts the charging demand current of the battery, the first charging demand current obtained is still greater than the actual charging demand current of the current battery, thereby causing the risk of overcurrent fault.

[0009] In one embodiment, the determining of the downward adjustment parameter of the charging demand current of the battery of the vehicle includes: determining the downward adjustment parameter as the product of the input current and a preset downward adjustment ratio.

[0010] Some embodiments of the present disclosure provide an implementation method for determining a down-regulation parameter.

[0011] In one embodiment, the above-mentioned determination of the downward adjustment parameter of the charging demand current of the vehicle's battery includes: determining a first difference between the input current and the overcurrent fault threshold; determining a second difference between the second preset time length and the first preset time length, the second preset time length being the confirmation time length of the battery overcurrent fault; and determining the downward adjustment parameter based on the first difference and the second difference.

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

[0013] In one embodiment, the above-mentioned charging control method also includes: determining the output current of the battery based on the power consumption of the vehicle and the voltage of the battery; determining a third difference between the charging demand current of the battery and the output current of the battery; when the input current is less than the third difference, adjusting the charging demand current of the battery based on a preset upward adjustment parameter to obtain a third charging demand current, and the third charging demand current is greater than the charging demand current before adjustment; 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] Some embodiments of the present disclosure can avoid the situation where the charging efficiency of a battery is too low after the charging demand current of the battery is lowered, and the charging demand current is increased by presetting an increase parameter to improve the charging efficiency of the battery.

[0015] In one embodiment, the above-mentioned charging control method also includes: obtaining a fourth charging demand current, which is the initial charging demand current of the battery when the vehicle is connected to the charging pile and starts charging; when the fourth charging demand current is less than the third charging demand current, sending 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.

[0016] In the charging control method provided in some embodiments of the present disclosure, it is implemented that when the charging demand current of the battery is increased, it is necessary to determine whether the adjusted charging demand current is greater than the charging demand current of the initial connected charging pile, to ensure that the charging pile will not adjust the output current based on the charging demand current exceeding the initial connection, thereby reducing the risk of battery overcurrent failure.

[0017] In one embodiment, the above-mentioned charging control method also includes: sending a downward adjustment indication message to the charging pile, the downward adjustment indication message includes a downward adjustment flag and a first charging demand current value; the downward adjustment flag 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 one embodiment, the above-mentioned charging control method also includes: sending an increase indication message to the charging pile, the increase indication message including an increase flag and a second charging demand current value; the increase flag 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 device is provided. The charging control device includes a determining unit, a processing unit, and a sending unit. The determining unit is configured to: determine a downward adjustment parameter of the charging demand current of the vehicle's battery when the input current is greater than or equal to an overcurrent fault threshold and the duration is greater than a first preset duration, where the input current is the current flowing into the battery. The processing unit is configured to: adjust the charging demand current of the battery based on the downward adjustment 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 the charging pile for charging the vehicle, so that the charging pile adjusts the 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 one embodiment, the determining unit is further configured to determine a second charging demand current based on the remaining charge of the battery, where the second charging demand current is configured to represent the 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 when 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 based on the second charging demand current until the input current is less than the overcurrent fault threshold.

[0021] In one embodiment, the determining unit is configured to determine the product of the input current and a preset reduction ratio as the reduction parameter.

[0022] In one embodiment, the determination unit is configured to determine a first difference between the input current and the overcurrent fault threshold; determine a second difference between the second preset time length and the first preset time length, where the second preset time length is the confirmation time length of the battery overcurrent fault; and determine a down-adjustment parameter based on the first difference and the second difference.

[0023] In one embodiment, the determination unit is further configured to determine the battery output current based on the vehicle's power consumption and the battery voltage. The determination unit is further configured to determine a third difference between the battery's charging demand current and the battery's output current. The processing unit is further configured to adjust the battery's charging demand current based on a preset upward adjustment parameter when the input current is less than the third difference, resulting in a third charging demand current, where the third charging demand current is greater than the pre-adjustment charging demand current. The sending unit is further configured to send the third charging demand current to the charging pile, causing the charging pile to adjust its output current based on the third charging demand current until the input current is greater than or equal to the third difference.

[0024] In one embodiment, the charging control device further includes an acquisition unit. The acquisition unit is configured to acquire a fourth charging demand current, which is the initial charging demand current of the battery when the vehicle is connected to the charging pile and begins charging. The sending unit is further configured to: if the fourth charging demand current is less than the third charging demand current, send 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.

[0025] In one embodiment, the sending unit is further configured to: send a downward adjustment indication message to the electric pile, the downward adjustment indication message including a downward adjustment flag and a first charging demand current value; the downward adjustment flag is configured to instruct the electric pile to adjust the output current of the electric 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 one embodiment, the sending unit is further configured to: send an increase indication message to the charging pile, the increase indication message including an increase flag and a second charging demand current value; the increase flag 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 for deployment in a vehicle. The charging control device includes a memory and a processor, the memory and the processor being coupled. The memory is configured to store computer program code, which includes computer instructions. When the processor executes the computer instructions, the charging control device performs the charging control method provided in the first aspect and any of its embodiments.

[0028] In a fourth aspect, a computer-readable storage medium is provided, in which instructions are stored. When the instructions are executed on a charging control device, the charging control device executes the above-mentioned charging control method.

[0029] In a fifth aspect, a battery management system is provided, which is deployed in a vehicle and configured to execute the above-mentioned charging control method.

[0030] In a sixth aspect, a vehicle is provided, comprising the above-mentioned charging control device or the above-mentioned battery management system.

[0031] In a seventh aspect, a computer program product is provided, which includes computer instructions. When the computer instructions are executed on a charging control device, the charging control device executes the above-mentioned charging control method.

[0032] Some embodiments of the present disclosure have the following beneficial effects:

[0033] (1) In the charging control method provided in some embodiments of the present disclosure, when 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 battery's down-regulation parameter is determined, and the battery's charging demand current is further adjusted according to the down-regulation parameter to obtain a 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 to charge the vehicle's battery according to the received first charging demand current, thereby avoiding the safety risk of input current overcurrent.

[0034] (2) In the charging control method provided in some embodiments of the present disclosure, it is possible to avoid the situation where, after the charging control device adjusts the charging demand current of the battery, the first charging demand current obtained is still greater than the actual charging demand current of the current battery, thereby causing the risk of overcurrent fault.

[0035] (3) In the charging control method provided in 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 that the battery has an overcurrent fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic diagram of a charging control system according to some embodiments;

[0037] FIG2 is a flow chart of a charging control method according to some embodiments;

[0038] FIG3 is a flow chart of another charging control method according to some embodiments;

[0039] FIG4 is a flow chart of another charging control method according to some embodiments;

[0040] FIG5 is a flowchart of another charging control method according to some embodiments;

[0041] FIG6 is a block diagram of a charging control device according to some embodiments;

[0042] FIG7 is a block diagram of a charging control device according to some embodiments;

[0043] FIG8 is a block diagram of a vehicle according to some embodiments;

[0044] FIG9 is a block diagram of another vehicle according to some embodiments. DETAILED DESCRIPTION

[0045] The following will describe the embodiments of the present disclosure with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present disclosure from the contents disclosed in this specification. The present disclosure may also be implemented or applied through different specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be understood that the preferred embodiments are merely illustrative of the present disclosure and are not intended to limit the scope of protection of the present disclosure.

[0046] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. Therefore, the illustrations only show components related to the present disclosure and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0047] In the description of some embodiments, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" and "a plurality of" refer to two or more. Words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not limit them to be necessarily different.

[0048] With the dwindling availability of fossil energy and the growing severity of environmental issues, the development of new energy vehicles has become a major trend, and new energy vehicles have become the development direction of the automotive industry. Against this backdrop, various automotive companies are developing their own new energy vehicle technologies. Charging issues are a widespread concern, and charging safety has become a fundamental requirement for new energy vehicles. Currently, due to the wide variety of DC charging piles on the market, a mismatch between the output current at the pile and the current demanded by the vehicle can occur, leading to the safety risk of overcurrent in the vehicle's charging input.

[0049] To prevent overcharging of vehicle batteries, conventional technologies often disconnect a relay upon detecting that the charging current exceeds the DC charging overcurrent threshold to ensure battery safety during the charging process. However, this prevents the vehicle battery from continuing to charge, failing to meet user needs for charging the vehicle battery.

[0050] In order to solve the above problems, some embodiments of the present disclosure provide a charging control method, device, equipment and storage medium. The charging control device determines a downward adjustment parameter of the charging demand current of the vehicle's battery when the input current is greater than or equal to the overcurrent fault threshold and the duration is greater than a first preset duration; the input current is the current flowing into the battery. The charging control device adjusts the charging demand current of the battery based on the downward adjustment parameter to obtain a first charging demand current; the first charging demand current is less than the charging demand current before adjustment; and sends the first charging demand current to the charging pile for charging the vehicle, so that the charging pile adjusts the output current of the charging pile according to the first charging demand current until the input current is less than the overcurrent fault threshold.

[0051] In this way, in the charging control method provided in some embodiments of the present disclosure, when it is determined that the current flowing into the battery is greater than or equal to the overcurrent fault threshold, in order to avoid charging safety problems caused by charging overcurrent, the battery's down-adjustment parameter is determined, and the battery's charging demand current is adjusted according to the down-adjustment parameter to obtain a 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 to charge the vehicle's battery according to the received first charging demand current, thereby avoiding safety risks caused by input current overcurrent.

[0052] Figure 1 shows a charging control system 10. The charging control methods provided in some embodiments of the present disclosure can be applied to the charging control system 10 shown in Figure 1 to prevent safety risks caused by input overcurrent. As shown in Figure 1, the charging control system 10 includes a charging control device 11, a battery 12, a battery management system (BMS) 13, a vehicle 14, and a charging station 15.

[0053] The charging control device 11 is connected to the BMS 13 , and the BMS 13 is connected to the battery 12 . The above connection relationship can be connected in a wired manner or in a wireless manner, which is not limited in the present disclosure.

[0054] It should be noted that in the above-mentioned charging control system 10 , the charging control device 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 via a charging line to charge the battery 12 .

[0055] In addition, the charging control device 11 can be integrated into the BMS 13 or be independently set up with the BMS 13. In order to describe the interactive relationship between various devices, some embodiments of the present disclosure take the independent setting of the charging control device 11 and the BMS 13 as an example to illustrate the charging control method provided by some embodiments of the present disclosure.

[0056] The BMS 13 is used to manage the charging and discharging of the battery 12 .

[0057] The charging control device 11 may be used to obtain the input current of the battery from the BMS 13 , and may also be used to obtain the remaining power of the battery from the BMS 13 .

[0058] The charging station 15 can be used to connect to the battery 12 of the vehicle 14 through a charging line, and adjust the output current to charge the battery 12 in response to the received charging demand current.

[0059] The charging control device 11 can be used to determine a parameter for reducing the charging demand current of the battery 12 of the vehicle 14 when the input current is greater than or equal to the overcurrent fault threshold and lasts for longer than a first preset time. The input current is the current flowing into the battery 12.

[0060] The charging control device 11 can also be used to adjust the charging current requirement of the battery 12 based on the downward adjustment parameter to obtain a first charging current requirement. The first charging current requirement is smaller than the charging current requirement before adjustment.

[0061] The charging control device 11 can also be used to send a first charging demand current to the charging pile 15 charging the vehicle 14, so that the charging pile 15 adjusts the 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.

[0062] In some embodiments, the charging control device 11 may also be used to determine the output current of the battery 12 according to the power consumption of the vehicle 14 and the voltage of the battery 12 .

[0063] The charging control device 11 may also be configured to determine a third difference between the required charging current of the battery 12 and the output current of the battery 12 .

[0064] The charging control device 11 may also be configured to adjust the required charging current of the battery 12 based on a preset upward adjustment parameter to obtain a third required charging current when the input current is less than the third difference.

[0065] The third charging demand current is greater than the charging demand current before adjustment.

[0066] The charging control device 11 may also be configured to send a third charging demand current to the charging pile 15 , so that the charging pile 15 adjusts the output current of the charging pile 15 according to the third charging demand current until the input current is greater than or equal to the third difference.

[0067] Figure 2 is a flowchart of a charging control method according to some embodiments. In some embodiments, the charging control method can be applied to the charging control device 11 in the charging control system 10 shown in Figure 1. Below, some embodiments of the present disclosure illustrate the charging control method using the charging control method applied to the charging control device 11 as an example.

[0068] As shown in FIG2 , some embodiments of the present disclosure provide a charging control method, including the following S201 - S204 .

[0069] S201. The charging control device determines whether the input current is greater than or equal to an overcurrent fault threshold.

[0070] For example, the input current is the current flowing into a battery.

[0071] As an implementation method, the charging control device obtains the current flowing into the battery through the BMS, determines the obtained current value as the input current, and obtains the overcurrent fault threshold pre-set in the charging control device. The charging control device determines the relationship between the input current and the overcurrent fault threshold.

[0072] It should be noted that the overcurrent fault threshold can be set in advance in the charging control device by the operation and maintenance personnel of the charging control system according to the performance of the battery. For example, the overcurrent fault threshold can be set to a fixed value, or it can be set to a value that has a mapping relationship with the remaining power of the battery. The remaining power at different stages corresponds to different overcurrent fault thresholds, and this disclosure does not limit this.

[0073] S202: The charging control device determines a downward adjustment parameter of the charging demand current of the vehicle's battery when the input current is greater than or equal to the overcurrent fault threshold and the duration is greater than a first preset duration.

[0074] As an implementation method, the charging control device starts timing based on the determination of the size relationship between the input current and the overcurrent fault threshold in the above-mentioned step S201, when the input current is greater than or equal to the overcurrent fault threshold, and determines the downward adjustment parameter of the charging demand current of the vehicle's battery after the timing duration is greater than the first preset time.

[0075] In some embodiments, a preset reduction ratio is stored in the charging control device. The charging control device determines the reduction parameter of the required charging current of the vehicle battery, which may be:

[0076] The charging control device determines the product of the input current and the preset reduction ratio as the reduction parameter.

[0077] It should be noted that in this case, the downward adjustment parameter is to reduce the current value, and the preset downward adjustment ratio can be set in advance in the charging control device by the operation and maintenance personnel of the charging control system according to the performance of the battery. This disclosure does not limit this.

[0078] In some embodiments, the charging control device determines the downward adjustment parameter of the charging demand current of the vehicle battery, which may also be:

[0079] The charging control device determines a first difference between the input current and the overcurrent fault threshold; and determines a second difference between the second preset time length and the first preset time length.

[0080] The second preset time length is the confirmation time length of the battery overcurrent fault, which can be set in advance in the charging control device by the operation and maintenance personnel of the charging control system, and this disclosure does not limit this.

[0081] The charging control device determines a downward adjustment parameter according to the first difference and the second difference.

[0082] The first difference is the difference between the current input current and the overcurrent fault threshold, i.e., the current that needs to be reduced. The second difference is the difference between the second preset duration and the first preset duration, i.e., the duration between determining the existence of an overcurrent risk and reporting the current fault to the user. The charging control device calculates the ratio of the first difference to the second difference to determine the current reduction rate required to reduce the current by the first difference within the duration of the second difference. This is the current reduction rate whose reduction parameter is the charging demand current.

[0083] In this way, by lowering the charging demand current of the first difference within the second difference time, the charging pile can charge the vehicle's battery with a lower output current after receiving the lowered charging demand current, thereby reducing the risk of overcurrent failure during battery charging.

[0084] In some embodiments, the charging control device determines the ratio of the product of the input current and the preset reduction ratio to the second difference to obtain a first reduction speed; and the charging control device determines the ratio of the first difference to the second difference to obtain a second reduction speed. If the first reduction speed is greater than the second reduction speed, the charging control device determines the reduction parameter to be the first reduction speed; if the first reduction speed is less than the second reduction speed, the charging control device determines the reduction parameter to be the second reduction speed.

[0085] In addition, the charging control device is also provided with a preset third reduction speed. After obtaining the first reduction speed and the second reduction speed, the charging control device determines the maximum reduction speed as the reduction parameter from the first reduction speed, the second reduction speed and the third reduction speed.

[0086] S203 : The charging control device adjusts the required charging current of the battery based on the downward adjustment parameter to obtain a first required charging current.

[0087] For example, the first required charging current is smaller than the required charging current before adjustment.

[0088] As an implementation manner, the charging control device adjusts the required charging current of the battery based on the downward adjustment parameter determined in the above step S202 to obtain the first required charging current.

[0089] For example, if the downward adjustment parameter is a current value, the charging control device subtracts the downward adjustment parameter from the current charging requirement current of the battery to obtain the first charging requirement current.

[0090] If the downward adjustment parameter is the current downward adjustment speed, the charging control device reduces the charging demand current of the battery at the speed indicated by the downward adjustment parameter, and obtains the first charging demand current after the second difference time.

[0091] S204 . The charging control device sends a first charging demand current to the charging pile for charging the vehicle, so that the charging pile adjusts the output current of the charging pile according to the first charging demand current until the input current is less than the overcurrent fault threshold.

[0092] As an implementation manner, after obtaining the first charging demand current based on the above step S203, the charging control device sends the first charging demand current to the charging pile for charging the vehicle.

[0093] Correspondingly, after receiving the first charging demand current sent by the charging control device, the electric pile adjusts the output current of the output end of the electric pile according to the first charging demand current, so that the input current flowing to the battery is reduced.

[0094] After the charging pile adjusts the output current, the charging control device determines whether the input current is less than the overcurrent fault threshold. If not, the charging control device continues to adjust the battery's charging demand current according to the downward adjustment parameters. If so, the charging control device stops adjusting the battery's charging demand current to avoid excessive drop in input current, which leads to reduced charging efficiency.

[0095] In some embodiments, the charging control device sends the first charging demand current to the charging pile, which can be:

[0096] The charging control device sends a downward adjustment instruction message to the charging pile.

[0097] The downward adjustment indication message includes a downward adjustment flag and a first charging demand current value; the downward adjustment flag 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 current value of the first charging demand current.

[0098] For example, the down-adjustment indication message may be IdownSts (down-adjustment flag)=1; I (first charging demand current value)=first charging demand current.

[0099] In some embodiments, in order to avoid the situation where the first charging demand current obtained after the charging control device adjusts the charging demand current of the battery is still greater than the actual charging demand current of the current battery, thereby causing the risk of overcurrent fault, the charging control method provided in some embodiments of the present disclosure, after obtaining the first charging demand current, as shown in Figure 3, further includes S301-S302.

[0100] S301. The charging control device determines a second charging requirement current according to the remaining power of the battery.

[0101] For example, the second charging demand current is configured to represent the charging demand current of the battery at the current moment.

[0102] As an implementation method, the charging control device obtains the battery's remaining capacity from the BMS and further determines the remaining capacity interval within which the battery's remaining capacity falls based on a mapping relationship between the remaining capacity interval and the required charging current. Based on the remaining capacity interval within which the battery falls, the charging control device determines the battery's current required charging current, i.e., the second required charging current.

[0103] It should be noted that the mapping relationship between the remaining power interval and the charging demand current can be set in advance in the charging control device by the operation and maintenance personnel of the charging control system, and this disclosure does not limit this.

[0104] S302. When the second charging demand current is less than the first charging demand current, the charging control device sends the second charging demand current to the charging pile, 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.

[0105] As an implementation method, after obtaining the second charging demand current based on the above step S301, the charging control device determines the magnitude relationship between the second charging demand current and the first charging demand current, and when the second charging demand current is less than the first charging demand current, sends the second charging demand current to the charging pile for charging the vehicle.

[0106] Correspondingly, after receiving the second charging demand current sent by the charging control device, the electric pile adjusts the output current of the output end of the electric pile according to the second charging demand current, so that the input current flowing to the battery is reduced.

[0107] After the charging pile adjusts the output current, the charging control device determines whether the input current is less than the overcurrent fault threshold. If not, the charging control device continues to adjust the battery's charging demand current according to the downward adjustment parameters. If so, the charging control device stops adjusting the battery's charging demand current to avoid excessive drop in input current, which leads to reduced charging efficiency.

[0108] In some embodiments, the charging control device sends the second charging demand current to the charging pile, which can be:

[0109] The charging control device sends a downward adjustment instruction message to the charging pile.

[0110] The downward adjustment indication message includes a downward adjustment flag and a first charging demand current value; the downward adjustment flag 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 current value of the second charging demand current.

[0111] For example, the down-adjustment indication message may be IdownSts (down-adjustment flag)=1; I (first charging demand current value)=second charging demand current.

[0112] In some embodiments, in order to avoid the situation where the charging control device reduces the charging demand current of the battery, resulting in a decrease in the charging efficiency of the battery and an increase in the charging time of the user, as shown in FIG4 , the charging control method provided in some embodiments of the present disclosure further includes S401 - S404.

[0113] S401 : The charging control device determines the output current of the battery according to the power consumption of the vehicle and the voltage of the battery.

[0114] As an implementation method, the charging control device obtains the current vehicle power consumption and the total voltage of the battery from the BMS, and determines the ratio of the power consumption to the battery voltage as the output current of the battery.

[0115] S402: The charging control device determines a third difference between the required charging current of the battery and the output current of the battery.

[0116] As an implementation method, the charging control device subtracts the output current of the battery determined in the above step S401 from the charging demand current of the battery sent to the charging pile for the last time before the current moment to obtain a third difference. That is, the third difference can characterize the current used to charge the battery to a certain extent.

[0117] S403 : When the input current is less than the third difference, the charging control device adjusts the required charging current of the battery based on a preset upward adjustment parameter to obtain a third required charging current.

[0118] For example, the third required charging current is greater than the required charging current before adjustment.

[0119] As an implementation method, the charging control device obtains the input current flowing into the battery at the current moment from the BMS, compares it with the third difference value obtained based on the above step S402, and when the input current is less than the third difference value, calls the preset increase parameter stored in the charging control device, adjusts the charging demand current of the battery, and obtains the third charging demand current.

[0120] It should be noted that the preset increase parameter can be a current value or a current increase speed. The preset increase parameter can be set in advance in the charging control device by the operation and maintenance personnel of the charging control system, and this disclosure does not limit this.

[0121] S404: The charging control device sends a 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.

[0122] As an implementation manner, after obtaining the third charging demand current based on the above step S403, the charging control device sends the third charging demand current to the charging pile for charging the vehicle.

[0123] Correspondingly, after receiving the third charging demand current sent by the charging control device, the electric pile adjusts the output current of the output end of the electric pile according to the third charging demand current, so that the input current flowing to the battery increases.

[0124] In some embodiments, after the charging pile adjusts the output current, the charging control device determines whether the input current is greater than the third difference. If not, the charging control device continues to adjust the charging demand current of the battery according to the preset upward adjustment parameters. If so, the charging control device stops adjusting the charging demand current of the battery to avoid excessive input current, which increases the risk of charging overcurrent.

[0125] In some embodiments, the charging control device sends the third charging demand current to the charging pile, which may be:

[0126] The charging control device sends an upward adjustment instruction message to the charging pile.

[0127] The upward adjustment indication message includes an upward adjustment flag and a second charging demand current value; the upward adjustment flag 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 current value of the third charging demand current.

[0128] For example, the upward adjustment indication message may be IupSts (increase flag)=1; I (second charging requirement current value)=third charging requirement current.

[0129] In some embodiments, in order to avoid the risk of an overcurrent fault due to the third charging demand current obtained after the charging control device adjusts the charging demand current of the battery being too high and exceeding the charging demand current when the charging pile is initially connected, the charging control method provided in some embodiments of the present disclosure, after obtaining the third charging demand current, further includes S501-S502 as shown in FIG5 .

[0130] S501: A charging control device obtains a fourth charging demand current.

[0131] The fourth charging demand current is the initial charging demand current of the battery when the vehicle is connected to the charging pile and starts charging.

[0132] S502. When the fourth charging demand current is less than the third charging demand current, the charging control device sends 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.

[0133] As an implementation method, after obtaining the fourth charging demand current based on the above step S501, the charging control device determines the magnitude relationship between the fourth charging demand current and the third charging demand current, and when the fourth charging demand current is less than the third charging demand current, sends the fourth charging demand current to the charging pile for charging the vehicle.

[0134] Correspondingly, after receiving the fourth charging demand current sent by the charging control device, the electric pile adjusts the output current of the output end of the electric pile according to the fourth charging demand current, so that the input current flowing to the battery increases.

[0135] After the charging pile adjusts the output current, the charging control device determines whether the input current is greater than the third difference. If not, the charging control device continues to adjust the battery's charging demand current according to the preset upward adjustment parameters. If so, the charging control device stops adjusting the battery's charging demand current to avoid excessive input current, which increases the risk of charging overcurrent.

[0136] In some embodiments, the charging control device sends the fourth charging demand current to the charging pile, which may be:

[0137] The charging control device sends an upward adjustment instruction message to the charging pile.

[0138] The upward adjustment indication message includes an upward adjustment flag and a second charging demand current value; the upward adjustment flag 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 current value of the fourth charging demand current.

[0139] For example, the downward adjustment indication message may be IupSts (increase flag)=1; I (second charging requirement current value)=fourth charging requirement current.

[0140] It is understood that some embodiments of the present disclosure, after reducing the required charging current to eliminate the risk of overcurrent faults, further check the input current to determine whether the reduction is too excessive, resulting in low battery charging efficiency. Furthermore, if the charging efficiency is low, the required charging current is increased using preset upward adjustment parameters to improve the battery charging efficiency. Furthermore, the increased required charging current is controlled so as not to exceed the initial required charging current.

[0141] The above mainly introduces the solutions provided by some embodiments of the present disclosure from the perspective of methods. In order to achieve the above functions, the charging control device or charging control equipment includes hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of the various examples described in the embodiments disclosed herein, some embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

[0142] In some embodiments of the present disclosure, the charging control device or charging control equipment may be divided into functional modules according to the above method. For example, the charging control device or charging control equipment may include functional modules corresponding to the functional divisions, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules may be implemented in the form of hardware or in the 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 only a logical functional division. In actual implementation, there may be other division methods.

[0143] FIG6 is a block diagram of a charging control device according to some embodiments. The charging control device is configured to execute the above-described charging control method. As shown in FIG6 , the charging control device 11 includes a determining unit 601 , a processing unit 602 , and a sending unit 603 .

[0144] The determination unit 601 is configured to: determine the downward adjustment parameter of the charging demand current of the vehicle's battery when the input current is greater than or equal to the overcurrent fault threshold and the duration is greater than a first preset duration, where the input current is the current flowing into the battery.

[0145] The processing unit 602 is configured to adjust the required charging current of the battery based on the downward adjustment parameter to obtain a first required charging current, where the first required charging current is smaller than the required charging current before adjustment.

[0146] The sending unit 603 is configured to send a first charging demand current to a charging pile for charging the vehicle, so that the charging pile adjusts the output current of the charging pile according to the first charging demand current until the input current is less than the overcurrent fault threshold.

[0147] In some embodiments, the determining unit 601 is further configured to determine a second charging requirement current according to the remaining power of the battery, where the second charging requirement current is configured to represent the charging requirement current of the battery at a current moment.

[0148] The sending unit 603 is also configured to: when the second charging demand current is less than the first charging demand current, send the second charging demand current to the charging pile, 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.

[0149] In some embodiments, the determining unit 601 is further configured to: determine the product of the input current and a preset reduction ratio as the reduction parameter.

[0150] 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 the second preset time length and the first preset time length, where the second preset time length is the confirmation time length of the battery overcurrent fault; and determine a down-adjustment parameter based on the first difference and the second difference.

[0151] In some embodiments, the determining unit 601 is further configured to determine the output current of the battery according to the power consumption of the vehicle and the voltage of the battery.

[0152] The determining unit 601 is further configured to determine a third difference between the required charging current of the battery and the output current of the battery.

[0153] The processing unit 602 is further configured to: when the input current is less than the third difference, adjust the battery charging demand current based on the preset increase parameter to obtain a third charging demand current, and the third charging demand current is greater than the charging demand current before adjustment.

[0154] The sending unit 603 is further configured to send a 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.

[0155] In some embodiments, as shown in FIG6 , the charging control device further includes an acquisition unit 604 .

[0156] The acquisition unit 604 is configured to acquire a fourth charging demand current, where the fourth charging demand current is the initial charging demand current of the battery when the vehicle is connected to the charging pile and starts charging.

[0157] The sending unit 603 is configured to: when the fourth charging demand current is less than the third charging demand current, send 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.

[0158] In some embodiments, the sending unit 603 is further configured to: send a downward adjustment indication message to the charging pile, the downward adjustment indication message including a downward adjustment flag and a first charging demand current value; the downward adjustment flag 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.

[0159] In some embodiments, the sending unit 603 is further configured to: send an increase indication message to the charging pile, the increase indication message including an increase flag and a second charging demand current value; the increase flag 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.

[0160] FIG7 is a block diagram of a charging control device according to some embodiments. As shown in FIG7 , the charging control device 70 includes but is not limited to: a processor 701 and a memory 702 .

[0161] The memory 702 is configured to store executable instructions of the processor 701. It can be understood that the processor 701 is configured to execute instructions to implement the charging control method in the above embodiment.

[0162] It should be noted that those skilled in the art will understand that the charging control device structure shown in FIG7 does not constitute a limitation on the charging control device. The charging control device may include more or fewer components than shown in FIG7 , or a combination of certain components, or a different arrangement of components.

[0163] Processor 701 is the control center of the charging control device. It connects the various components of the entire charging control device using various interfaces and lines. By running or executing at least one of the software programs or modules stored in memory 702 and accessing data stored in memory 702, it performs various functions of the charging control device and processes data, thereby monitoring the entire charging control device. Processor 701 may include one or more processing units.

[0164] In some embodiments, the processor 701 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs, while the modem processor primarily processes wireless communications. It is understood that the modem processor may not be integrated into the processor 701.

[0165] The memory 702 can be configured to store software programs and various data. The memory 702 may primarily include a program storage area and a data storage area. The program storage area may store an operating system, application programs required by at least one functional module (such as a determination unit, a processing unit, etc.), and the like. Furthermore, the memory 702 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0166] 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 can be executed by the processor 701 of the charging control device 70 to implement the above-mentioned charging control method.

[0167] In actual implementation, the functions of the determining unit 601, processing unit 602, sending unit 603, and obtaining unit 604 in FIG6 can all be implemented by the processor 701 in FIG7 calling a computer program stored in the memory 702. The execution process can be referred to the description of the charging control method above and will not be repeated here.

[0168] In some embodiments, the computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary 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.

[0169] As shown in FIG. 8 and FIG. 9 , some embodiments of the present disclosure further provide a vehicle 14 including the above-mentioned charging control device 70 or a vehicle 14 including the above-mentioned battery management system 13 .

[0170] Some embodiments of the present disclosure further provide a computer program product comprising one or more instructions, which can be executed by the processor 701 of the charging control device 70 to implement the charging control method in the above embodiment.

[0171] It should be noted that when the instructions in the above-mentioned computer-readable storage medium or 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-mentioned charging control method embodiment are implemented, and the same technical effect as the above-mentioned charging control method can be achieved. To avoid repetition, they will not be repeated here.

[0172] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete the full classification or partial functions described above.

[0173] In the several embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0174] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0175] In addition, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0176] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of some embodiments of the present disclosure are essentially or partially contributed to the prior art or the full classification part or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute the full classification part or part of the steps of the methods of each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as USB Flash Disk (UFD), mobile hard disk, ROM, RAM, magnetic disk or optical disk.

[0177] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

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

2. The method for controlling charging according to claim 1, wherein after receiving the first required charging current, the method further includes: determining a second required charging current in accordance with the residual capacity of the battery, wherein the second required charging current characterizes the required charging current of the battery at the current moment; and sending a second required charging current to the charging station in the event that the second required charging current is less than the first required charging current, so that the charging station adjusts the output current of the charging station in accordance with the second required charging current until the input current becomes less than the overcurrent fault threshold.

3. The charging control method according to claim 1 or 2, wherein determining the reduction parameter for the required charging current of the vehicle battery includes: defining the product of the input current and the preset reduction factor as the reduction parameter.

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

5. A method for controlling charging according to any of paragraphs 1-4, further comprising: determining the output current of the battery in accordance with the power consumption of the vehicle and the voltage of the battery; determining the third difference between the required charging current of the battery and the output current of the battery; adjusting the required charging current of the storage battery based on the preset increase parameter to obtain a third required charging current in the case where the input current is less than the third difference, wherein the third required charging current is greater than the required charging current before adjustment; and sending a third required charging current to the charging station, so that the charging station adjusts the output current of the charging station in accordance with the third required charging current until the input current becomes greater than or equal to the third difference.

6. The charging control method according to paragraph 5, further comprising: obtaining a fourth required charging current, wherein the fourth required charging current is the initial required charging current of the battery when the vehicle is connected to the charging station to begin charging; and sending a fourth required charging current to the charging station in the case where the fourth required charging current is less than the third required charging current, so that the charging station adjusts the output current of the charging station in accordance with the fourth required charging current until the input current becomes greater than or equal to the third difference.

7. A method for controlling charging according to paragraph 5 or 6, further comprising: sending an increase indication message to the charging station, wherein the increase indication message contains an increase identifier and a second value of the required charging current; wherein the increase identifier is configured to issue an instruction to the charging station to regulate the output current of the charging station in accordance with the second value of the required charging current, and the second value of the required charging current is the value of the third required charging current or the fourth required charging current.

8. A method for controlling charging according to any of paragraphs 1-4, further comprising: sending a decrease indication message to the charging station, wherein the decrease indication message contains a decrease identifier and a first value of the required charging current; wherein the reduction identifier is configured to issue an instruction to the charging station to regulate the output current of the charging station in accordance with the first value of the required charging current, and the first value of the required charging current is the value of the first required charging current or the second required charging current.

9. A charging control device comprising: a determining unit configured to: determine a reduction parameter for a required charging current of a storage battery of a vehicle in the case where an input current is greater than or equal to an overcurrent fault threshold and a duration exceeds a first preset duration, wherein the input current is a current flowing into the storage battery; a processing unit configured to: regulate a required charging current of the battery based on the reduction parameter to obtain a first required charging current, wherein the first required charging current is less than the required charging current before regulation; and a sending unit configured to: send a first required charging current to a charging station for charging a vehicle, so that the charging station adjusts the output current of the charging station in accordance with the first required charging current until the input current becomes 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; wherein the memory and processor are connected to each other; the memory is configured to store computer program code containing computer instructions; the computer instructions, when executed by the processor, ensure that the charging control device executes the charging control method according to any of paragraphs 1-8.

11. A computer-readable data storage medium on which instructions are stored which, when executed by a charging control device, cause the charging control device to carry out the charging control method according to any one of paragraphs 1-8.

12. A battery management system deployed in a vehicle and configured to perform the charging control method according to any one of paragraphs 1-8.

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