Charging control method and device and vehicle

Abstract

The invention discloses a charging control method and device for preventing overdischarge of a battery in a direct-current charging process, and the method and device are applied to a vehicle, and in the direct-current charging process, the charging state of the vehicle and the SOC value of the battery are detected, and the condition that the battery has an overdischarge risk is determined according to the type of a current sampling circuit; the over-discharge risk of the battery of the vehicle is recognized, charging is ended in time, the battery performance is prevented from being influenced by over-discharge of the battery of the vehicle, and the situation that the vehicle cannot be started due to over-discharge of the battery, the vehicle use planning of a user is influenced, and inconvenience is brought to the user is avoided.

Description

Technical Field

[0001] The present invention relates to a charging control method, and in particular to a charging control method, a device and a vehicle. Background Art

[0002] In the related technology, when a vehicle is charged with DC, charging abnormalities may occur due to various problems such as charging pile failure, but the vehicle is still in the charging process and the vehicle charging-related devices are still in working condition. When the battery SOC value is very low, it is easy to cause the vehicle's battery to over-discharge, resulting in problems such as the vehicle being unable to start, affecting the user's vehicle use planning and experience, and causing unnecessary trouble or even losses to the user. Summary of the invention

[0003] The invention provides a charging control method, a charging control device and a vehicle.

[0004] In a first aspect, the present invention provides a charging control method, the charging control method comprising:

[0005] When the vehicle is DC charged, determining, based on the charging state of the vehicle and the SOC value of the battery of the vehicle, that the battery of the vehicle has an over-discharge risk;

[0006] Control to actively terminate charging, and / or notify the user of charging abnormalities;

[0007] The charging state of the vehicle is determined based on the parameter value of the charging parameter of the vehicle; the charging parameter of the vehicle includes the charging current, and the charging current is collected by a current sampling circuit; the condition for determining whether the battery of the vehicle is at risk of over-discharge is determined based on the type of the current sampling circuit.

[0008] When the vehicle is DC charged, the vehicle enters the charging process and the vehicle's charging-related devices are in working condition. If the charging is abnormal due to various problems such as a malfunction of the charging pile, the battery cannot be charged normally, but the vehicle's charging process has not yet ended, the vehicle's charging-related devices are still in working condition, consuming the battery's energy. In other words, the battery is not charged to replenish energy, but is continuously consuming energy. If the above state is maintained for a long time, the vehicle's battery is at risk of over-discharge.

[0009] After determining that the vehicle's battery is at risk of over-discharge, the system will actively terminate charging or notify the user of charging abnormalities so that the user can know the vehicle status and terminate charging. After charging is completed, the vehicle exits the charging process and the vehicle's charging-related devices stop working, thereby effectively reducing the overall energy consumption of the battery, preventing the vehicle's battery from over-discharging, and greatly reducing problems such as the vehicle being unable to start due to over-discharge of the vehicle's battery, thereby avoiding affecting the user's vehicle planning and vehicle experience, and causing unnecessary trouble or even losses to the user.

[0010] In the related art, the current sampling circuit is used to detect the charging current of the charging circuit. The types of current sampling circuits are divided into independent current sampling circuits and non-independent current sampling circuits. Non-independent current sampling circuits will be affected by loads, such as high-voltage electrical equipment, and the collected charging current may be biased. According to different types of current sampling circuits, different conditions are set to determine whether the battery of the vehicle is at risk of over-discharge, which can improve the accuracy of detection.

[0011] In some possible embodiments,

[0012] If the type of the current sampling circuit is an independent current sampling circuit, the condition is the first condition;

[0013] If the type of the current sampling circuit is a non-independent current sampling circuit, the condition is the second condition;

[0014] The first condition is different from the second condition.

[0015] In some possible embodiments, the first condition is:

[0016] If the charging state continues to be abnormal within the first preset time, it is determined that the battery of the vehicle has an over-discharge risk.

[0017] In some possible embodiments, the second condition is:

[0018] If the charging state continues to be abnormal within the first preset time, and after the high-voltage electrical equipment except the voltage converter is turned off, the charging state continues to be abnormal within the second preset time, it is determined that the battery of the vehicle is at risk of over-discharge.

[0019] In some possible embodiments, the setting of the first preset time is related to the SOC value of the battery of the vehicle;

[0020] When the SOC value of the battery of the vehicle is within a first preset range, the value of the first preset time is set to a first preset time value;

[0021] When the SOC value of the battery of the vehicle is within a second preset range, the value of the first preset time is set to a second preset time value;

[0022] The first preset time value is the same as or different from the second preset time value.

[0023] In some possible embodiments, the charging parameter of the vehicle further includes at least one of a charging demand current and a maximum allowable charging current.

[0024] In some possible embodiments, the charging state of the vehicle includes charging abnormality. When a parameter value of a charging parameter of the vehicle satisfies at least one of the following conditions, the charging state of the vehicle is charging abnormality:

[0025] The deviation between the charging current and the charging demand current is within a third preset range,

[0026] The deviation between the charging current and the maximum allowable charging current is within a fourth preset range,

[0027] The charging current is in a fifth preset range.

[0028] In some possible embodiments, actively ending charging includes:

[0029] Charging ends when the timing time is reached.

[0030] In some possible embodiments, notifying the user of the charging abnormality includes: controlling the vehicle terminal to send a first prompt message, wherein the first prompt message is used to prompt the user of the charging abnormality; and / or sending charging abnormality information to the mobile terminal so that the mobile terminal reminds the user of the charging abnormality.

[0031] In some possible embodiments, after actively ending charging, the method further includes:

[0032] Control the vehicle computer to send a charging end prompt message; and / or

[0033] Send charging end information to the mobile terminal to inform the user that charging is completed.

[0034] In a second aspect, the present invention provides a charging control device, comprising a processor, the processor being connected to a memory, the memory being used to store a computer program, the processor calling the computer program to execute the method described in the first aspect.

[0035] In a third aspect, the present invention provides a charging system, comprising a battery and the charging control device described in the second aspect, wherein the charging control device controls the battery to be charged.

[0036] In a fourth aspect, the present invention provides a vehicle, comprising the charging control device described in the second aspect, and / or the charging system described in the third aspect.

[0037] In a fifth aspect, the present invention provides a computer storage medium storing a computer program, which, when executed by a processor, implements the method described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0039] Figure 1 is a schematic diagram of a process of a charging control method according to an embodiment of the present application;

[0040] Figure 2 is another schematic diagram of the process of the charging control method according to an embodiment of the present application;

[0041] Figure 3 is another schematic diagram of the process of the charging control method according to an embodiment of the present application;

[0042] Figure 4 is another schematic diagram of the process of the charging control method according to an embodiment of the present application;

[0043] Figure 5 is a schematic diagram of a charging control device according to an embodiment of the present application;

[0044] Figure 6 is a schematic diagram of a charging system according to an embodiment of the present application;

[0045] Figure 7 is a schematic diagram of a vehicle according to an embodiment of the present application;

[0046] Figure 8 is another schematic diagram of a vehicle according to an embodiment of the present application;

[0047] Fig. 9 is a schematic diagram of the type of current sampling circuit according to an embodiment of the present application.

[0048] Reference numerals:

[0049] Vehicle power supply equipment 200; vehicle 100; battery 10; charging control device 20; charging system 30; load 40; controller 24; BMS 25; processor 21; memory 22; communication component 23; independent current sampling circuit 51; non-independent current sampling circuit 52. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0051] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0052] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0053] When the battery is discharged, the stored electric energy is gradually released and the voltage slowly drops. When the voltage drops to a certain specified value, the discharge should be stopped and the battery should be recharged to restore the energy storage state. If the discharge continues below this specified value, the battery is over-discharged. Over-discharge may damage the active material of the electrode, lose the reaction ability, and shorten the battery life. For vehicle use, when the battery of the vehicle is over-discharged, the vehicle will not be able to start, and may even cause property damage.

[0054] See also Figure 1 , according to an exemplary embodiment of the present application, a schematic diagram of a charging control method is shown. The method can be applied to a charging control device to prevent the battery of the vehicle from over-discharging when the vehicle is DC charged. The method includes the following steps:

[0055] Step S103: Determine whether the battery of the vehicle has an over-discharge risk based on the charging state of the vehicle and the SOC value of the battery of the vehicle.

[0056] For example, when the SOC value of the battery is very low and the charging state of the vehicle is abnormal, the vehicle is at risk of over-discharging.

[0057] When the vehicle is charging, the vehicle enters the charging process, and the vehicle's charging-related devices are in working condition. If the charging is abnormal due to various problems such as a malfunction of the charging pile, but the interaction is normal, and the charging process is not exited, the battery cannot be charged normally, but the vehicle's charging process is not over, and the vehicle's charging-related devices are still in working condition, consuming battery energy. In other words, the battery is not charged to replenish energy, but is continuously consuming energy. Especially when the vehicle's battery SOC is very low, if the above state continues for a period of time, the vehicle's battery is at risk of over-discharge.

[0058] Step S104: End charging or notify the user of charging abnormality.

[0059] After determining that the vehicle's battery is at risk of over-discharge, the charging is terminated proactively or the user is notified of the charging abnormality so that the user knows the vehicle status and ends charging.

[0060] After charging is completed, the vehicle exits the charging process and the vehicle's charging-related devices stop working, thereby effectively reducing the overall energy consumption of the battery, preventing the vehicle's battery from over-discharging, and greatly reducing problems such as the vehicle being unable to start due to over-discharging of the vehicle's battery, avoiding affecting the user's vehicle planning and vehicle experience, and causing unnecessary trouble or even losses to the user.

[0061] Optionally, before step S103, the following may be included:

[0062] Step S102: Acquire the charging status of the vehicle.

[0063] Optionally, the charging state of the vehicle is determined based on a parameter value of a charging parameter of the vehicle.

[0064] Optionally, the charging status of the vehicle includes charging abnormality.

[0065] Optionally, before step S103, the following may also be included:

[0066] Step S101: Acquire charging parameters of the vehicle, where the charging parameters include charging current.

[0067] The charging current is the charging current of the charging circuit.

[0068] Optionally, the parameter value of the charging current can be acquired by a current sampling circuit.

[0069] Optionally, the charging control device determines the condition that the battery of the vehicle is at risk of over-discharge based on the type of the current sampling circuit.

[0070] In the related art, types of current sampling circuits include independent current sampling circuits and dependent current sampling circuits.

[0071] See also Fig. 9 , according to the schematic diagram of the type of current sampling circuit of the embodiment of the present application, the independent current sampling circuit 51 is connected in series in the loop connecting the vehicle power supply device 200 and the battery 10, one end is connected to the vehicle power supply device 200, and the other end is connected to the battery 10 and the load 40; the non-independent current sampling circuit 52 is connected in series in the loop connecting the vehicle power supply device 200 and the battery 10, one end is connected to the battery 10, and the other end is connected to the vehicle power supply device 200 and the load 40. The non-independent current sampling circuit will be affected by the load operation, such as high-voltage electrical equipment, and the collected charging current may be biased.

[0072] In some possible embodiments, the vehicle power supply device includes a charging pile.

[0073] In some possible embodiments, if the type of the current sampling circuit is an independent current sampling circuit, the condition is the first condition; if the type of the current sampling circuit is a non-independent current sampling circuit, the condition is the second condition; the first condition is different from the second condition.

[0074] In some possible embodiments, the first condition is: if the charging state of the vehicle continues to be abnormal within a first preset time, it is determined that the battery of the vehicle has an over-discharge risk;

[0075] In some possible embodiments, the second condition is: if the charging state of the vehicle continues to be abnormal within the first preset time, and after shutting down high-voltage electrical equipment except the voltage converter, the charging state of the vehicle continues to be abnormal within the second preset time, then it is determined that the vehicle's battery is at risk of over-discharge.

[0076] In some possible embodiments, the setting of the first preset time is related to the SOC value of the battery of the vehicle;

[0077] Optionally, when the SOC value of the battery of the vehicle is within a first preset range, the value of the first preset time is set to the first preset time value; when the SOC value of the battery of the vehicle is within a second preset range, the value of the first preset time is set to the second preset time value;

[0078] Optionally, the first preset time value is the same as or different from the second preset time value.

[0079] See also Figure 2 According to a schematic diagram of the process of the charging control method shown in a specific embodiment of the present application, if the current sampling circuit is an independent current sampling circuit, the condition for determining that the battery of the vehicle has an over-discharge risk is the first condition, and the first condition includes but is not limited to the following steps:

[0080] Step S201: Determine whether the charging state of the vehicle is abnormal charging and whether the SOC value of the battery is within a first preset range?

[0081] If the charging state of the vehicle is abnormal charging and the SOC value of the battery is within the first preset range, continue to execute step S202; if the charging state of the vehicle is abnormal charging and the SOC value of the battery is within the first preset range, execute step S204.

[0082] Step S202: setting the value of the first preset time to the first preset time value T1.

[0083] For example, in step S201, the first preset range can be set to ≤10%. If the SOC value of the battery is ≤10%, the value of the first preset time is set to T1. For example, T1 can be set to 10 minutes, and then the process proceeds to the next step S203.

[0084] Step S203: During the time T1, is the charging state of the vehicle continuously satisfied as abnormal charging and is the SOC value of the battery within the first preset range?

[0085] It is determined whether the charging state of the vehicle continues to be abnormal within the time T1, and whether the SOC value of the battery continues to be within the first preset range. If the result is yes, it is determined that the battery of the vehicle has an over-discharge risk.

[0086] Step S204: Determine whether the charging state of the vehicle is abnormal charging and whether the SOC value of the battery is within a second preset range?

[0087] If the charging state of the vehicle is abnormal charging and the SOC value of the battery is within the second preset range, continue to execute step S205.

[0088] Step S205: setting the value of the first preset time to the second preset time value T2.

[0089] For example, in step S201, the second preset range can be set to 10% to 30%. If the SOC value of the battery is between 10% and 30%, the first preset time is set to T2, for example, T2 can be set to 60 minutes, and then proceed to the next step S206.

[0090] Step S206: Determine whether the vehicle's charging status continues to be abnormal charging and the battery SOC value is within a second preset range within the time T2.

[0091] It is determined whether the charging state of the vehicle continues to be abnormal charging and whether the SOC value of the battery continues to be within a second preset range within T2. ​​If the result is yes, it is determined that the battery of the vehicle has an over-discharge risk.

[0092] In some possible embodiments, if the first preset range is smaller than the second preset range, the first preset time value is also smaller than the second preset time value.

[0093] For example, the first preset range is set to ≤10%, and the second preset range is set to 10%~30%; when the SOC value of the battery is ≤10%, the first preset time value is set to 10 minutes, and when the SOC value of the battery is between 10% and 30%, the second preset time value is set to 60 minutes. It can be understood that when the vehicle is charging abnormally, the lower the SOC value of the vehicle's battery, the higher the risk of over-discharge of the vehicle's battery, and the shorter the time to maintain the discharge state and avoid over-discharge of the battery.

[0094] When the vehicle's charging state is detected as abnormal charging, if the battery SOC value is ≤10%, within 10 minutes, if the vehicle's charging state is continuously detected as abnormal charging and the battery SOC value is ≤10%, it is determined that the vehicle is at risk of over-discharge;

[0095] When the vehicle's charging status is detected as abnormal charging and the battery's SOC value is between 10% and 30%, if the vehicle's charging status is continuously detected as abnormal charging and the battery's SOC value is between 10% and 30% within 60 minutes, it is determined that the vehicle is at risk of over-discharge.

[0096] It is understandable that if charging abnormality is detected, the battery SOC value is between 10% and 30%, and before 60 minutes, the battery SOC value drops to ≤10%, the execution result of step S206 is no, and the process returns to step S201. If the vehicle's charging state is still abnormal, step S202 and subsequent steps will continue to be executed. Possible execution situations are not listed here one by one.

[0097] See also Figure 4 According to a schematic diagram of the process of the charging control method shown in a specific embodiment of the present application, if the current sampling circuit is a non-independent current sampling circuit, the condition for determining that the battery of the vehicle has an over-discharge risk is the second condition, and the second condition includes but is not limited to the following steps:

[0098] Steps S401-S406 are the same as steps S201-S206 of the first condition above and will not be described in detail here.

[0099] Optionally, the method includes step S407: controlling to shut down high-voltage electrical equipment except the voltage converter.

[0100] If the vehicle's charging state is abnormal and the battery's SOC value is within the first preset range during T1, or if the vehicle's charging state is abnormal and the battery's SOC value is within the second preset range during T2, step S407 is executed to control the high-voltage electrical equipment except the voltage converter to be turned off. The control to turn off is not limited to direct control or control by sending a shutdown instruction.

[0101] In some possible embodiments, the high-voltage electrical equipment includes air conditioners, PTCs, motor controllers, and the like.

[0102] Step S408: Determine whether the charging status of the vehicle continues to be abnormal within the second preset time.

[0103] The non-independent current sampling circuit will be affected by the load operation, such as high-voltage electrical equipment, and the collected charging current may be biased. After turning off the high-voltage electrical equipment, continuing to detect the charging status of the vehicle can effectively improve the detection accuracy. If the charging status of the vehicle is still abnormal within the second preset time, it can be determined that the vehicle's battery is at risk of over-discharge.

[0104] In some possible embodiments, the charging parameters of the vehicle further include at least one of a charging demand current and a maximum allowed charging current.

[0105] For example, the charging parameters of a vehicle include a charging current and a maximum allowable charging current. For another example, the charging parameters of a vehicle include a charging current and a charging demand current. The charging parameters of a vehicle are not limited to the above methods, and this application does not list all combinations one by one.

[0106] Optionally, when the parameter value of the charging parameter of the vehicle satisfies at least one of the following conditions, the charging state of the vehicle is abnormal charging:

[0107] The deviation between the charging current and the charging demand current is within a third preset range,

[0108] The deviation between the charging current and the maximum allowable charging current is within a fourth preset range,

[0109] The charging current is in a fifth preset range.

[0110] For example, when the parameter value of the charging parameter satisfies that the charging current is in an abnormal range, it can be determined that the charging state of the vehicle is abnormal charging; for another example, the fifth preset range is set as the range of abnormal charging current, and the third preset range is set as the deviation range of the charging current and the charging demand current when charging is abnormal. If the charging current is in the fifth preset range, and the deviation between the charging current and the charging demand current is in the third preset range, it can be determined that the charging state of the vehicle is abnormal charging. The conditions are not limited to the above methods, and this application does not list all combinations one by one.

[0111] See also Figure 3 According to another schematic diagram of the process of the charging control method shown in an exemplary embodiment of the present application, when the vehicle is DC charged, determining that the charging state of the vehicle is a charging abnormality condition according to the parameter value of the charging parameter of the vehicle includes but is not limited to the following steps:

[0112] Optionally, step S301: determine whether the deviation between the charging current and the charging demand current is within a third preset range.

[0113] In some possible embodiments, during normal charging, the deviation between the charging current and the charging demand current is within a certain range, which is related to factors such as the output error of the vehicle-mounted charging device. The third preset range can be set as the deviation range between the charging current and the charging demand current during abnormal charging according to this range. If the deviation between the charging current and the charging demand current is within the third preset range, it can be understood that the charging state of the vehicle is abnormal charging.

[0114] Optionally, step S302: determine whether the deviation between the charging current and the maximum allowable charging current is within a fourth preset range.

[0115] In some possible embodiments, during normal charging, the deviation between the charging current and the maximum allowable charging current is within a certain range, and the range is related to factors such as the output error of the vehicle-mounted charging device. The fourth preset range can be set as the deviation range between the charging current and the maximum allowable charging current when charging is abnormal. If the deviation between the charging current and the charging demand current is within the fourth preset range, it can be understood that the charging state of the vehicle is abnormal charging.

[0116] Optionally, step S302: determine whether the charging current is within a fifth preset range.

[0117] In some possible embodiments, the fifth preset range may be determined according to the maximum allowable charging current or the charging demand current. If the charging current is within the fifth preset range, it is determined that the charging state of the vehicle is abnormal.

[0118] For example, the maximum allowable charging current of the vehicle is 10A. According to the output error of the on-board charging device and other related factors, the deviation between the charging current of the vehicle and the maximum allowable charging current is within 20%, and the fifth preset range can be set to <8A. If the value of the charging current of the vehicle is <8A, the charging state of the vehicle is abnormal charging.

[0119] In some possible embodiments, the third preset range and / or the fourth preset range may be set in the form of percentage or difference, etc. The specific form may be set according to relevant factors such as the output error of the vehicle-mounted charging device, which are not listed here one by one.

[0120] In some possible embodiments, if the vehicle has a scheduled charging function, it is also necessary to determine whether it is in the scheduled charging state. In the scheduled charging state, the vehicle has not started charging, and it is impossible to determine whether the vehicle has a charging abnormality. After charging starts, the charging state of the vehicle is determined based on the parameter values ​​of the vehicle's charging parameters.

[0121] In some possible embodiments, controlling to actively terminate charging includes: terminating charging after a timing time has expired.

[0122] In some possible embodiments, different timing times can be set according to the SOC value range of the vehicle's battery. For example, when the battery's SOC value is ≤10%, the timing time can be set to 3 minutes, and when the battery's SOC value is between 10% and 30%, the timing time can be set to 15 minutes.

[0123] In some possible embodiments, controlling to notify the user of the charging abnormality includes: controlling the vehicle terminal to send a prompt message to prompt the user of the charging abnormality; sending the charging abnormality information to the mobile terminal so that the mobile terminal reminds and notifies the user of the charging abnormality.

[0124] For example, the vehicle computer can be controlled to emit a prompt sound and display a "charging abnormality" reminder; another example is to send vehicle abnormality information through a mobile terminal. When the battery SOC value is low, the vehicle discharge risk can be prompted, such as "the vehicle is charging abnormally, your vehicle battery is low, to avoid affecting use, it is recommended to end charging", and various audio-visual prompts can be used to prompt users of vehicle charging abnormalities, which are not listed here one by one.

[0125] In some possible embodiments, after the user is notified of the charging abnormality, the user receives a prompt message and may issue an end-charging instruction through the vehicle terminal or mobile terminal. If the user's end-charging instruction is received, the charging is terminated directly; if the user's end-charging instruction is not received, the charging is actively terminated after the preset timing time is reached.

[0126] In some possible embodiments, if the vehicle charging returns to normal within the timing time, the process is exited.

[0127] In some possible embodiments, the execution of the end charging operation includes exiting the charging process, and the charging-related devices of the vehicle stop working. It can be understood that after the charging is ended, the energy consumption of the battery of the vehicle is greatly reduced, and the battery over-discharge caused by excessive battery energy consumption is effectively prevented.

[0128] Figure 5 is a schematic diagram of a charging control device according to an exemplary embodiment of the present application. The charging control device 20 includes a processor 21, which may be one or more. The processor 21 may be configured to execute a related computer program so that the charging control device 20 performs the above-mentioned charging control method.

[0129] In some possible embodiments, the charging control device 20 further includes a memory 22 for storing a computer program executable by the processor 21. The computer program stored in the memory 22 may include one or more modules, each corresponding to a set of instructions.

[0130] In addition, the charging control device 20 may further include a communication component 23 , which may be configured to implement a communication function of the charging control device 20 , such as wired or wireless communication.

[0131] Figure 6 is a schematic diagram of a charging system according to an exemplary embodiment of the present application. The charging system 30 includes the charging control device 20 and a battery 10. The charging control device 20 executes the charging control method to charge the battery 10.

[0132] Figure 7 1 is a schematic diagram of a vehicle according to an exemplary embodiment of the present application. The vehicle 100 may be a pure electric vehicle or a hybrid vehicle. The vehicle 100 includes a charging control device 20 and a battery 10. The vehicle control device 20 is electrically connected to the battery 10. The vehicle control device 20 executes a corresponding charging control program to enable charging-related units to operate and charge the battery 10.

[0133] In some possible embodiments, the vehicle control device 20 is electrically connected to the vehicle power supply device 200 , and the vehicle control device 20 detects and obtains charging parameters of the vehicle 100 .

[0134] See also Figure 8 , according to another schematic diagram of a vehicle shown in an exemplary embodiment of the present application, in some possible embodiments, the charging control device 20 may include one or more controllers with processing capabilities, for example, the charging control device 20 includes a controller 24 and a BMS 25.

[0135] In another exemplary embodiment, a non-volatile computer storage medium including program instructions is also provided, and the program instructions implement the above-mentioned charging control method when executed by the processor 21. For example, the non-volatile computer storage medium can be the above-mentioned memory 22 including program instructions, and the above-mentioned program instructions can be executed by the processor 21 of the charging control device 20 to complete the above-mentioned charging method.

[0136] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0137] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, 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 an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0138] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A charging control method for a vehicle, characterized in that: The charging control method comprises: When the vehicle is DC charged, determining, based on the charging state of the vehicle and the SOC value of the battery of the vehicle, that the battery of the vehicle has an over-discharge risk; Control to actively terminate charging, and / or notify the user of charging abnormalities; The charging state of the vehicle is determined based on the parameter value of the charging parameter of the vehicle; the charging parameter of the vehicle includes the charging current, and the charging current is collected by a current sampling circuit; the condition for determining whether the battery of the vehicle is at risk of over-discharge is determined based on the type of the current sampling circuit.

2. The method according to claim 1, characterized in that If the type of the current sampling circuit is an independent current sampling circuit, the condition is the first condition; If the type of the current sampling circuit is a non-independent current sampling circuit, the condition is the second condition; The first condition is different from the second condition.

3. The method according to claim 2, characterized in that The first condition is: If the charging state continues to be abnormal within the first preset time, it is determined that the battery of the vehicle has an over-discharge risk.

4. The method according to claim 2, characterized in that: The second condition is: If the charging state continues to be abnormal within the first preset time, and after the high-voltage electrical equipment except the voltage converter is turned off, the charging state continues to be abnormal within the second preset time, it is determined that the battery of the vehicle is at risk of over-discharge.

5. The method according to any one of claims 3-4, characterized in that: The setting of the first preset time is related to the SOC value of the battery of the vehicle; When the SOC value of the battery of the vehicle is within a first preset range, the value of the first preset time is set to a first preset time value; When the SOC value of the battery of the vehicle is within a second preset range, the value of the first preset time is set to a second preset time value; The first preset time value is the same as or different from the second preset time value.

6. The method according to claim 1, characterized in that The charging parameter of the vehicle also includes at least one of a charging demand current and a maximum allowed charging current.

7. The method according to claim 1, characterized in that The charging state of the vehicle includes charging abnormality. When a parameter value of a charging parameter of the vehicle satisfies at least one of the following conditions, the charging state of the vehicle is charging abnormality: The deviation between the charging current and the charging demand current is within a third preset range, The deviation between the charging current and the maximum allowable charging current is within a fourth preset range, The charging current is in a fifth preset range.

8. The method according to claim 1, characterized in that The active termination of charging comprises: Charging ends when the timing time is reached.

9. The method according to claim 1, characterized in that: The notifying the user of the charging abnormality includes: controlling the vehicle terminal to send a first prompt message, wherein the first prompt message is used to prompt the user of the charging abnormality; and / or sending charging abnormality information to the mobile terminal so that the mobile terminal reminds the user of the charging abnormality.

10. The method according to claim 1, characterized in that After actively ending the charging, the method further includes: Control the vehicle computer to send a charging end prompt message; and / or Send charging end information to the mobile terminal to inform the user that charging is completed.

11. A charging control device, characterized in that: The charging control device includes a processor, the processor is connected to a memory, the memory is used to store a computer program, and the processor calls the computer program to execute the method according to any one of claims 1 to 10.

12. A charging system, characterized in that: The charging system includes a battery and the charging control device according to claim 11, and the charging control device controls the battery to be charged.

13. A vehicle, characterized in that: The vehicle includes the charging control device according to claim 11 and / or the charging system according to claim 12.

14. A computer storage medium, characterized in that: The computer storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 10 is implemented.

Images