A method and related apparatus for regeneration control of a particulate filter

Abstract

This specification provides a regeneration control method for a particulate filter. When the vehicle is in the in-situ regeneration state of the particulate filter and the remaining charge of the power battery is less than a first set value, the method generates a first control command. This first control command instructs a second controller to increase the output torque of the engine. This allows the engine's output torque to meet both the in-situ regeneration requirements of the particulate filter and the charging requirements of the drive motor for the power battery. This helps to prevent the remaining charge of the power battery from continuously decreasing to an excessively low level during the regeneration process of the particulate filter, which could adversely affect the state of health (SOH) of the power battery. This achieves the goal of preventing damage to the vehicle's power battery due to excessively low remaining charge during the regeneration process of the particulate filter.

Description

Technical Field

[0001] This specification relates to the field of vehicle technology, specifically to particulate filter regeneration technology in the field of vehicle technology, and more specifically to a particulate filter regeneration control method and related apparatus. Background Technology

[0002] A gas-line particulate filter (GPF) is a device installed in the exhaust aftertreatment system of a vehicle engine. Its main function is to filter particulate matter (PM) from exhaust gases, thereby reducing particulate matter emissions and environmental pollution. As the vehicle continues to drive, a significant amount of particulate matter may accumulate on the particulate filter. In such cases, regeneration may be necessary. This involves using high-temperature exhaust gases from the engine to burn off and remove the particulate matter from the filter, preventing excessive particulate matter buildup that could lead to blockages, reduced vehicle power, and increased fuel consumption.

[0003] Therefore, the regeneration process of the particulate filter is crucial for maintaining its proper function and ensuring normal vehicle operation. Currently, the particulate filter regeneration process may damage other components of the vehicle. Summary of the Invention

[0004] This specification provides a method and apparatus for controlling the regeneration of a particulate filter, in order to prevent damage to the vehicle's power battery during the regeneration process of the particulate filter.

[0005] To achieve the above technical objectives, the embodiments described in this specification provide the following technical solutions:

[0006] In a first aspect, a regeneration control method for a particulate filter is provided, applied to a first controller of a vehicle, the vehicle further comprising: a power battery, an engine, and a second controller, the second controller being configured to control the engine to operate in response to instructions from the first controller, the regeneration control method for the particulate filter comprising:

[0007] In response to the vehicle being in the in-situ regeneration mode of the particulate filter, when the remaining charge of the power battery is less than a first set value, a first control command is generated, which is used to instruct the second controller to increase the output torque of the engine.

[0008] In a second aspect, a vehicle is provided, comprising: a first controller, a second controller, a power battery, and an engine, wherein the second controller is configured to control the engine to operate in response to instructions from the first controller;

[0009] The first controller is configured to generate a first control command in response to the vehicle being in a particulate regeneration state when the remaining charge of the power battery is less than a first set value. The first control command is used to instruct the second controller to increase the output torque of the engine.

[0010] Thirdly, a regeneration control device for a particulate filter is provided, applied to a first controller of a vehicle, the vehicle further comprising: a power battery, an engine, and a second controller, the second controller being configured to control the engine to operate in response to instructions from the first controller, the regeneration control device for the particulate filter comprising:

[0011] The first torque adjustment unit is used to generate a first control command when the remaining charge of the power battery is less than a first set value in response to the vehicle being in the in-situ regeneration mode of the particulate filter. The first control command is used to instruct the second controller to increase the output torque of the engine.

[0012] Fourthly, a computing device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the regeneration control method for the particle trap as described above.

[0013] Fifthly, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the regeneration control method for a particle trap as described above.

[0014] Sixthly, a computer program product or computer program is provided, the computer program product comprising a computer program stored in a computer-readable storage medium; a processor of a computer device reads the computer program from the computer-readable storage medium, and the processor executes the computer program to implement the steps of the above-described regeneration control method for a particle trap. Optionally, the computer program may be stored in a computer-readable storage medium or in the cloud; the processor of the computer device reads the computer program from the readable storage medium or in the cloud.

[0015] As can be seen from the above technical solution, the particulate filter regeneration control method provided in this specification generates a first control command when the vehicle is in the in-situ regeneration state of the particulate filter and the remaining charge of the power battery is less than a first set value. This first control command is used to instruct the second controller to increase the output torque of the engine, so that the output torque of the engine can meet the in-situ regeneration requirements of the particulate filter and the charging requirements of the drive motor for the power battery at the same time. This helps to avoid the situation where the remaining charge of the power battery continues to drop to an excessively low level during the regeneration process of the particulate filter, which would have an adverse effect on the state of health (SOH) of the power battery. This achieves the goal of preventing the vehicle's power battery from being damaged due to excessively low remaining charge during the regeneration process of the particulate filter. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this specification. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 A schematic flowchart illustrating a regeneration control method for a particulate trap provided for embodiments of this specification;

[0018] Figure 2 A schematic diagram of the structure of a vehicle provided for embodiments of this specification;

[0019] Figure 3 This is a schematic diagram of the structure of a computing device provided for the implementation of this specification. Detailed Implementation

[0020] Unless otherwise defined, the technical or scientific terms used in the embodiments of this specification shall have the ordinary meaning understood by one of ordinary skill in the art to which this specification pertains. The terms "first," "second," and similar terms used in the embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to avoid confusion of constituent elements.

[0021] Unless the context otherwise requires, throughout this specification, "a plurality of" means "at least two," and "including" is interpreted as open-ended or encompassing, that is, "including, but not limited to." In the description of this specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this specification. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example.

[0022] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this specification, and not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0023] First, it should be noted that spatial relation terms, such as "front" and "back," are intended to refer to the two opposing first and second surfaces of a device or element. The use of "front" and "back" here is for the purpose of conforming to the orientation of the accompanying drawings and facilitating description. When the orientation of the drawings changes, the spatial relation terms should also be interpreted accordingly; for example, if the device or element in the drawings is flipped, then "front" should be understood as "back."

[0024] Overview

[0025] Regeneration of the particulate filter is crucial for ensuring its proper functioning and the normal operation of the vehicle. Particulate filter regeneration can be categorized into passive regeneration and in-situ regeneration. Passive regeneration occurs when the vehicle is traveling at high speeds (e.g., 80 km / h or 90 km / h or higher), where the engine exhaust temperature may be high (e.g., exceeding 500°C). In this case, the high-temperature exhaust gas can automatically burn and remove particulate matter from the particulate filter, achieving passive regeneration. Passive regeneration of the particulate filter does not require the vehicle to be stationary; it only requires the vehicle to meet specific operating conditions while in motion.

[0026] In-situ regeneration (also known as parking regeneration) can refer to the vehicle automatically regenerating the particulate filter when the vehicle's diagnostics detect that particulate matter has accumulated to a certain level, or the vehicle may send a prompt to the user indicating that in-situ regeneration is needed. Upon receiving this prompt, the user can either manually trigger the particulate filter regeneration or drive the vehicle to a maintenance station where maintenance personnel can trigger the process. During in-situ regeneration, the user or maintenance personnel must place the vehicle in a safe environment and operate it according to the vehicle's instruction manual.

[0027] However, the inventors discovered that for hybrid vehicles, during the in-situ regeneration process, the vehicle's engine speed and load are adjusted to a specific range to increase the exhaust gas temperature, allowing the particulate matter in the particulate filter to be ignited and removed by the exhaust gas, thus completing the regeneration process. During this process, components such as the vehicle's air conditioning, headlights, and ambient lights still require power from the battery to maintain operation. If the remaining charge (State of Charge, SOC) of the battery is low, and the engine's output torque is also low, it is insufficient to simultaneously meet the dual needs of in-situ regeneration of the particulate filter and charging of the battery. In this case, the vehicle will prioritize the in-situ regeneration of the particulate filter, causing the remaining charge of the battery to continuously decrease during the process. This may result in the battery's remaining charge being too low, adversely affecting the battery's health.

[0028] To address this issue, the inventors proposed a regeneration control method for a particulate filter. This method generates a first control command when the vehicle is in the in-situ regeneration state of the particulate filter and the remaining charge of the power battery is less than a first set value. This first control command instructs a second controller to increase the engine's output torque. This ensures that the engine's output torque meets both the in-situ regeneration requirements of the particulate filter and the charging requirements of the drive motor for the power battery. This helps prevent the power battery's remaining charge from continuously decreasing to an excessively low level during the particulate filter's regeneration process, thus avoiding damage to the vehicle's power battery due to excessively low remaining charge during the particulate filter's regeneration process.

[0029] Furthermore, to prevent the temperature of the vehicle exhaust gas from becoming too high during the on-site regeneration process and damaging other components in the exhaust gas aftertreatment system, a second control command can be generated when the remaining charge of the power battery is greater than a fourth set value. The second control command is used to instruct the second controller to reduce the output torque of the engine. The fourth set value is greater than the first set value. In this way, when the remaining charge of the power battery is relatively high, the output torque of the engine can be reduced, avoiding the problem of the vehicle exhaust gas temperature becoming too high and burning out other components in the aftertreatment system.

[0030] Based on the above concept, this specification provides a regeneration control method for a particulate filter. The regeneration control method for a particulate filter provided in this specification will be described exemplarily below with reference to the accompanying drawings.

[0031] Exemplary methods

[0032] This specification provides a method for regeneration control of a particulate filter, such as... Figure 1 As shown, a first controller 16 is applied to a vehicle 100, which further includes a power battery 10, an engine 12, and a second controller 17. The second controller 17 is used to control the engine 12 to operate in response to instructions from the first controller 16. The regeneration control method of the particulate filter includes:

[0033] S101: In response to the vehicle 100 being in the in-situ regeneration mode of the particulate filter, when the remaining charge of the power battery 10 is less than a first set value, a first control command is generated, the first control command being used to instruct the second controller 17 to increase the output torque of the engine 12.

[0034] In this embodiment, the vehicle 100 can be a hybrid vehicle 100. The power system of the vehicle 100 may include an engine 12, a power battery 10, and a motor 11, etc. The engine 12 can drive the motor 11 to charge the power battery 10. The power battery 10 can drive the vehicle 100 and also supply power to other high-voltage and low-voltage components of the vehicle 100. For example, in addition to driving the vehicle 100, the power battery 10 can also supply power to the vehicle 100's air conditioning, entertainment system, headlights, ambient lighting, etc. In some embodiments, the engine 12 can also drive the vehicle 100 alone or in conjunction with the power battery 10. This specification does not limit this; it depends on the specific circumstances. In addition, refer to... Figure 1 The vehicle 100 may also include a clutch 13, a transmission device 14, and a drive wheel 15, etc. This specification does not limit this, and it depends on the actual situation.

[0035] Understandable Figure 1 The specification shows a feasible connection method for components such as engine 12, motor 11, and power battery 10. In other embodiments of this specification, the connection relationship of various components in the vehicle can be changed according to requirements, without affecting the specific implementation of the regeneration control method of the particulate trap provided in the embodiments of this specification.

[0036] The in-situ regeneration condition can refer to the operating condition when the vehicle 100 performs GPF regeneration. In some implementations, the in-situ regeneration condition can refer to the operating state in which the vehicle 100 is stationary and, through a specific engine 12 operation control strategy, the particulate matter inside the particulate filter is oxidized and burned in a high-temperature environment, thereby removing the particulate matter and restoring the filtering performance of the particulate filter.

[0037] When the vehicle 100 is in the original regeneration condition of the particulate filter, the first controller 16 can detect the remaining charge of the power battery 10. When it is less than a first set value (the first set value can be, for example, 20%, 15%, 10%, etc., which can be calibrated according to the actual situation), it generates a first control command. The first control command can be sent to the second controller 17. The first control command can instruct the second controller 17 to increase the output torque of the engine 12, so that the output torque of the engine 12 can meet the charging requirements of the power battery 10 while meeting the in-situ regeneration requirements of the particulate filter. This helps to avoid the situation where the remaining charge of the power battery 10 continuously decreases to an excessively low level during the regeneration process of the particulate filter, which would have an adverse effect on the health of the power battery 10. This achieves the purpose of preventing the power battery 10 of the vehicle 100 from being damaged due to excessively low remaining charge during the regeneration process of the particulate filter.

[0038] In one embodiment, for the hybrid vehicle 100, the first controller 16 may refer to a hybrid control unit (HCU), and the second controller 17 may refer to an electronic control unit (ECU). However, it is understood that with the development of vehicle 100 technology and different technical routes, the first controller 16 and the second controller 17 may also be other types / names of controllers in the vehicle 100. This specification does not limit this, and it depends on the actual situation. The connection relationship between the first controller 16 and the second controller 17 and other components is not described in the specification. Figure 1As shown in the specification, in specific implementation, the connection relationship between the first controller 16 and the second controller 17 and other components can be determined according to the requirements, as long as the communication requirements of the first controller 16 and the second controller 17 with other components (such as the power battery 10, the motor 11 and the engine 12) are met. This specification does not limit this, and it depends on the actual situation.

[0039] In some implementations, feasible methods for generating the first control command are provided. For example, in one implementation, generating the first control command when the remaining charge of the power battery 10 is less than a first set value includes:

[0040] When the remaining power of the power battery 10 is less than a first set value, a power difference is determined based on the remaining power of the power battery 10. The power difference includes the difference between the remaining power of the power battery 10 and the first set value.

[0041] The adjustment step size is determined based on the adjustment parameters, including the power difference.

[0042] The first control command is generated based on the adjustment step size; the first control command is specifically used to: instruct the second controller 17 to increase the output torque of the engine 12 by the adjustment step size; the adjustment step size is positively correlated with the electrical charge difference.

[0043] In this embodiment, a closed-loop control strategy based on adjustment step size is provided. When the vehicle 100 is in the in-situ regeneration mode of the particulate filter and the remaining charge of the power battery 10 is less than a first set value, the first controller 16 can generate a first control command to instruct the second controller 17 to increase the adjustment step size of the output torque of the engine 12. In the next controller cycle (which can refer to the working cycle of the first controller 16, and can be determined according to parameters such as the working clock frequency of the first controller 16), if the first controller 16 detects that the vehicle 100 is still in the in-situ regeneration mode of the particulate filter and the remaining charge of the power battery 10 is still less than the first set value, it can generate a first control command again to instruct the second controller 17 to increase the adjustment step size of the output torque of the engine 12 again, until the vehicle 100 is no longer in the in-situ regeneration mode of the particulate filter, or the remaining charge of the power battery 10 is no longer less than the first set value.

[0044] Furthermore, in this embodiment, the adjustment step size is determined based on adjustment parameters, including the charge difference (i.e., the difference between the remaining charge of the power battery 10 and a first set value). The adjustment step size is positively correlated with the charge difference. Thus, when the charge difference is large, it indicates that the remaining charge of the power battery 10 is small, and the load on the power battery 10 may be large, requiring a larger charging power to charge it. In this case, the adjustment step size is positively correlated with the charge difference, allowing the engine 12 to provide a larger charging power to the power battery 10, achieving the goal of quickly increasing the remaining charge of the power battery 10. Conversely, when the charge difference is small, it indicates that the power battery 10 is close to the first set value. In this case, the adjustment step size can be relatively small, reducing the probability of excessively high exhaust temperature of the engine 12 due to excessive output torque.

[0045] In one embodiment, to more accurately determine the adjustment step size, the adjustment parameters further include at least one of: ambient temperature, the current load of the power battery 10, and the maximum charging power of the power battery 10.

[0046] It is understandable that different ambient temperatures may affect the charging power of the power battery 10. For example, in low-temperature environments (e.g., ambient temperatures of 0°C or below), the lower ambient temperature may lead to reduced battery activity and increased internal resistance. The vehicle 100 will then limit parameters such as the charging current of the power battery 10, preventing it from charging at a higher power. Conversely, in high-temperature environments, the vehicle 100's thermal management system may intervene to prevent excessive heat from damaging the power battery 10. Therefore, incorporating ambient temperature into the adjustment parameters allows the impact of ambient temperature on the performance of the power battery 10 to be taken into account, facilitating a more accurate determination of the adjustment step size.

[0047] The current load of the power battery 10 largely determines its power consumption rate. In some cases, the power consumption rate of the power battery 10 varies greatly depending on the current load (e.g., the current load of the power battery 10 may differ significantly when the air conditioner is on and off). In some implementations, the adjustment step size can be determined based on the current load of the power battery 10 to ensure that the charging power of the power battery 10 is close to or exceeds the power consumption power of the current load of the power battery 10, thereby reducing the probability that the remaining power of the power battery 10 will continue to decrease during the in-situ regeneration process of the particulate filter.

[0048] The maximum charging power of the power battery 10 can be related to the remaining charge of the power battery 10. The maximum charging power of the power battery 10 can be used to limit the upper limit of the torque provided by the engine 12 to the battery. By adding the maximum charging power of the power battery 10 to the adjustment parameters, the problem of excessively high exhaust temperature of the engine 12 caused by excessively increasing the output torque of the engine 12 during a certain adjustment process can be avoided.

[0049] In some embodiments, the adjustment parameters may include the charge difference and ambient temperature, the charge difference and the current load of the power battery 10, and the charge difference and the maximum charging power of the power battery 10. In other embodiments, the adjustment parameters may include the charge difference, ambient temperature, and the current load of the power battery 10, the charge difference, the current load of the power battery 10, and the maximum charging power of the power battery 10. In still other embodiments, the adjustment parameters may include the charge difference, ambient temperature, the current load of the power battery 10, and the maximum charging power of the power battery 10. It is understood that the more parameters included in the adjustment parameters, the more accurate the determined adjustment step size may be, thus making the determined adjustment step size more suitable for the current operating conditions and environment of the vehicle. This specification does not limit the number and types of parameters included in the adjustment parameters, which can be determined according to the hardware computing power and the accuracy requirements of the adjustment step size.

[0050] In another embodiment of this specification, another control strategy is provided, specifically, the first control instruction includes a first instruction and a second instruction;

[0051] When the remaining charge of the power battery 10 is less than a first set value, generating the first control command includes:

[0052] When the remaining charge of the power battery 10 is less than a first set value and greater than a second set value, the first instruction is generated based on the first step length; the first instruction is used to instruct the second controller 17 to increase the output torque of the engine 12 by the first step length.

[0053] When the remaining charge of the power battery 10 is less than the second set value and greater than the third set value, the second instruction is generated based on the second step size; the second instruction is used to instruct the second controller 17 to increase the output torque of the engine 12 by the second step size; the first set value is greater than the second set value, the second set value is greater than the third set value, and the first step size is less than the second step size.

[0054] In this embodiment, the remaining charge of the power battery 10 is divided into two intervals. The first interval is from a first set value to a second set value. When the remaining charge of the power battery 10 is within this interval, it can be considered that the remaining charge of the power battery 10 deviates little from the first set value, and torque adjustment can be performed based on a smaller first step size. The second interval is between the second set value and a third set value. When the remaining charge of the power battery 10 is within this interval, it can be considered that the remaining charge of the power battery 10 deviates significantly from the first set value, and torque adjustment can be performed based on a larger second step size to help the remaining charge of the power battery 10 increase rapidly. In this way, by setting the first set value, the second set value, and the third set value, and the above two intervals, the purpose of selecting the step size based on the remaining charge of the power battery 10 can be achieved relatively easily. The amount of calculation required when selecting the step size is small, and the requirements for vehicle hardware are low.

[0055] In one embodiment, another closed-loop control strategy is provided. Specifically, when the remaining charge of the power battery 10 is less than a first set value, generating a first control command includes:

[0056] When the remaining charge of the power battery 10 is less than the first set value, the first control command is generated based on the first set step size; the first control command is used to instruct the second controller 17 to increase the output torque of the engine 12 by the first set step size.

[0057] In this embodiment, a fixed first set step size is set. When the remaining charge of the power battery 10 is less than the first set value, a first control command is generated based on the first set step size to instruct the second controller 17 to increase the output torque of the engine 12 by the fixed first set step size. In this way, the control strategy can be simplified and the reliability of the method can be improved.

[0058] In one embodiment, to avoid excessive exhaust temperature caused by excessive engine torque when the power battery 10 has a high remaining charge and does not require charging, the regeneration control method of the particulate filter further includes:

[0059] In response to the vehicle 100 being in the in-situ regeneration mode of the particulate filter, when the remaining charge of the power battery 10 is greater than a fourth set value, a second control command is generated. The second control command is used to instruct the second controller 17 to reduce the output torque of the engine 12. The fourth set value is greater than the first set value.

[0060] In this embodiment, when the vehicle 100 is in the in-situ regeneration mode of the particulate filter and the remaining charge of the power battery 10 is already high (i.e. greater than the fourth set value), the charging demand of the power battery 10 is low. In order to avoid the excessive output torque of the engine 12 causing the exhaust temperature of the vehicle 100 to be too high, the first controller 16 can generate a second control command to instruct the second controller 17 to reduce the output torque of the engine 12, so as to avoid the problem of damage to other components that may be caused by the excessive exhaust temperature of the vehicle 100.

[0061] In one implementation, the second control command includes a third command and a fourth command;

[0062] When the remaining charge of the power battery 10 is greater than the fourth preset value, the generation of the second control command includes:

[0063] When the remaining charge of the power battery 10 is greater than a fourth set value, a torque difference value is obtained. The torque difference value includes the difference between the current torque of the engine 12 and the target torque. The target torque includes the regeneration torque required by the particulate filter.

[0064] When the torque difference is greater than the first torque threshold, the third instruction is generated based on the third step length. The third instruction is used to instruct the second controller 17 to reduce the output torque of the engine 12 by the third step length.

[0065] When the torque difference is less than the first torque threshold, the fourth instruction is generated based on the fourth step length. The fourth instruction is used to instruct the second controller 17 to reduce the output torque of the engine 12 by the fourth step length; the third step length is greater than the fourth step length.

[0066] Similar to the first control command, in this embodiment, the second control command may include a third command and a fourth command. When the torque difference is greater than the first torque threshold in different intervals (e.g., the interval greater than the first torque threshold and the interval less than the first torque threshold), the third command or the fourth command is generated according to the size of the difference between the torque difference and the first torque threshold. This allows for the adjustment of the engine 12 output torque with different step sizes under different conditions, so as to meet the purpose of quickly reducing the engine 12 output torque to the regeneration torque required by the particulate filter when the remaining charge of the power battery 10 is high.

[0067] In one embodiment, another closed-loop control strategy is provided when the remaining charge of the power battery 10 is greater than a fourth preset value. Specifically, generating a second control command when the remaining charge of the power battery 10 is greater than the fourth preset value includes:

[0068] When the remaining charge of the power battery 10 is greater than the fourth set value, the second control command is generated based on the second set step size; the first control command is used to instruct the second controller 17 to reduce the output torque of the engine 12 by the second set step size.

[0069] In this embodiment, a fixed second setting step size is set. When the remaining power of the power battery 10 is less than the fourth setting value, a second control command is generated based on the second setting step size to instruct the second controller 17 to reduce the output torque of the engine 12 by the fixed second setting step size. In this way, the control strategy can be simplified and the reliability of the method can be improved.

[0070] Exemplary vehicle 100

[0071] In one exemplary embodiment of this specification, a vehicle 100 is also provided, such as Figure 2 As shown, it includes: a first controller 16, a second controller 17, a power battery 10, and an engine 12. The second controller 17 is used to control the engine 12 to work in response to the instructions of the first controller 16.

[0072] The first controller 16 is configured to generate a first control command when the remaining charge of the power battery 10 is less than a first set value in response to the vehicle 100 being in the in-situ regeneration condition of the particulate filter. The first control command is used to instruct the second controller 17 to increase the output torque of the engine 12.

[0073] In one embodiment, for the hybrid vehicle 100, the first controller 16 may refer to the hybrid control unit (HCU), and the second controller 17 may refer to the electronic control unit (ECU). However, it is understood that, with the development of vehicle 100 technology and different technical routes, the first controller 16 and the second controller 17 may also be controllers of other types / names in the vehicle 100. This specification does not limit this, and it depends on the actual situation.

[0074] In this embodiment, the vehicle 100 can be a hybrid vehicle 100. The power system of the vehicle 100 may include an engine 12, a power battery 10, and a motor 11, etc. The engine 12 can drive the motor 11 to charge the power battery 10. The power battery 10 can drive the vehicle 100 and also supply power to other high-voltage and low-voltage components of the vehicle 100. For example, in addition to driving the vehicle 100, the power battery 10 can also supply power to the vehicle 100's air conditioning, entertainment system, headlights, ambient lighting, etc. In some embodiments, the engine 12 can also drive the vehicle 100 alone or in conjunction with the power battery 10. This specification does not limit this; it depends on the specific circumstances. In addition, refer to... Figure 1 The vehicle 100 may also include a clutch 13, a transmission device 14, and a drive wheel 15, etc. This specification does not limit this, and it depends on the actual situation.

[0075] Understandable Figure 1 and Figure 2 The specification illustrates a feasible connection method for components such as the engine 12, motor 11, and power battery 10. In other embodiments of this specification, the connection relationships of various components in the vehicle can be changed according to requirements without affecting the specific implementation of the regeneration control method for the particulate trap provided in this specification. The connection relationships of the first controller 16 and the second controller 17 with other components are not shown in the specification. Figure 1 and Figure 2 As shown in the specification, in specific implementation, the connection relationship between the first controller 16 and the second controller 17 and other components can be determined according to the requirements, as long as the communication requirements of the first controller 16 and the second controller 17 with other components (such as the power battery 10, the motor 11 and the engine 12) are met. This specification does not limit this, and it depends on the actual situation.

[0076] In one embodiment, when the remaining charge of the power battery 10 is less than a first set value, the first controller 16 generates a first control command specifically for:

[0077] When the remaining power of the power battery 10 is less than a first set value, a power difference is determined based on the remaining power of the power battery 10. The power difference includes the difference between the remaining power of the power battery 10 and the first set value.

[0078] The adjustment step size is determined based on the adjustment parameters, including the power difference.

[0079] The first control command is generated based on the adjustment step size; the first control command is specifically used to: instruct the second controller 17 to increase the output torque of the engine 12 by the adjustment step size; the adjustment step size is positively correlated with the electrical charge difference.

[0080] In one embodiment, the adjustment parameters further include at least one of: ambient temperature, the current load of the power battery 10, and the maximum charging power of the power battery 10.

[0081] In one embodiment, the first control command includes a first command and a second command; when the remaining power of the power battery 10 is less than a first set value, the first controller 16 generates the first control command specifically for:

[0082] When the remaining charge of the power battery 10 is less than a first set value and greater than a second set value, the first instruction is generated based on the first step length; the first instruction is used to instruct the second controller 17 to increase the output torque of the engine 12 by the first step length.

[0083] When the remaining charge of the power battery 10 is less than the second set value and greater than the third set value, the second instruction is generated based on the second step size; the second instruction is used to instruct the second controller 17 to increase the output torque of the engine 12 by the second step size; the first set value is greater than the second set value, the second set value is greater than the third set value, and the first step size is less than the second step size.

[0084] In one embodiment, when the remaining charge of the power battery 10 is less than a first set value, the first controller 16 generates a first control command specifically for:

[0085] When the remaining charge of the power battery 10 is less than the first set value, the first control command is generated based on the first set step size; the first control command is used to instruct the second controller 17 to increase the output torque of the engine 12 by the first set step size.

[0086] In one embodiment, the first controller 16 is further configured to generate a second control command in response to the vehicle 100 being in the in-situ regeneration condition of the particulate filter, when the remaining charge of the power battery 10 is greater than a fourth set value, the second control command being configured to instruct the second controller 17 to reduce the output torque of the engine 12, the fourth set value being greater than the first set value.

[0087] In one embodiment, the second control command includes a third command and a fourth command; the first controller 16 generates the second control command when the remaining power of the power battery 10 is greater than a fourth preset value, specifically for:

[0088] When the remaining charge of the power battery 10 is greater than a fourth set value, a torque difference value is obtained. The torque difference value includes the difference between the current torque of the engine 12 and the target torque. The target torque includes the regeneration torque required by the particulate filter.

[0089] When the torque difference is greater than the first torque threshold, the third instruction is generated based on the third step length. The third instruction is used to instruct the second controller 17 to reduce the output torque of the engine 12 by the third step length.

[0090] When the torque difference is less than the first torque threshold, the fourth instruction is generated based on the fourth step length. The fourth instruction is used to instruct the second controller 17 to reduce the output torque of the engine 12 by the fourth step length; the third step length is greater than the fourth step length.

[0091] In one embodiment, when the remaining charge of the power battery 10 is greater than a fourth preset value, the first controller 16 generates a second control command specifically for:

[0092] When the remaining charge of the power battery 10 is greater than the fourth set value, the second control command is generated based on the second set step size; the first control command is used to instruct the second controller 17 to reduce the output torque of the engine 12 by the second set step size.

[0093] Exemplary computing device

[0094] Another embodiment of this specification also proposes a computing device, see [link to documentation]. Figure 3 As shown, an exemplary embodiment of this specification also provides a computing device, including: a memory and a processor, the memory storing a computer program, the processor executing the computer program to perform steps in the regeneration control method of a particle trap according to various embodiments of this specification described above.

[0095] The internal structure of the computing device can be as follows: Figure 3As shown, the computing device includes a processor, memory, network interface, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface is used to communicate with external terminals via a network connection. When the computer program is executed by the processor, it follows the steps of the regeneration control method for a particle trap according to various embodiments of this specification, as described in the above embodiments.

[0096] The processor may include the main processor, as well as baseband chips, modems, etc.

[0097] It is understood that the processor in the embodiments of this specification can be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this specification. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this specification can be directly implemented by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above methods.

[0098] It is understood that the memory in the embodiments of this specification may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM). It should be noted that the memory in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0099] Input devices may include devices that receive data and information input by the user, such as keyboards, mice, cameras, scanners, light pens, voice input devices, touch screens, pedometers, or gravity sensors.

[0100] Output devices may include devices that allow information to be output to the user, such as displays, printers, speakers, etc.

[0101] The communication interface may include any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0102] The computing device may also include a display component and a voice component. The display component may be a liquid crystal display screen or an e-ink display screen. The input device of the computing device may be a touch layer covering the display component, or a button, trackball or touchpad set on the casing of the computing device, or an external keyboard, touchpad or mouse, etc.

[0103] Those skilled in the art will understand that Figure 3 The structures shown are merely block diagrams of some structures related to the solutions in this specification and do not constitute a limitation on the computing devices on which the solutions in this specification are applied. Specific computing devices may include more or fewer components than those shown in the figures, or combine certain components, or have different component arrangements.

[0104] Exemplary computer program products and storage media

[0105] In addition to the methods and devices described above, the regeneration control method for a particulate trap provided in the embodiments of this specification can also be a computer program product, which includes computer program instructions that, when executed by a processor, cause the processor to perform the steps in the regeneration control method for a particulate trap according to various embodiments of this specification as described in the "Exemplary Methods" section above.

[0106] The aforementioned computer program product can be implemented through hardware, software, or a combination thereof. In one optional embodiment, the computer program product is specifically embodied in a computer storage medium; in another optional embodiment, the computer program product is specifically embodied in a software product, such as a software development kit (SDK), etc.

[0107] The computer program product described herein can be written in any combination of one or more programming languages ​​to perform the operations described herein. These programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0108] Furthermore, embodiments of this specification also provide a computer-readable storage medium having a computer program stored thereon, the computer program being executed by a processor of the steps in the regeneration control method of a particle trap according to various embodiments of this specification as described in the "Exemplary Methods" section above.

[0109] Those skilled in the art will understand that all or part of the processes in the above-described embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, storage, databases, or other media used in the embodiments provided in this specification can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0110] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] The embodiments described above are merely illustrative of several implementations of this specification, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the solutions provided in this specification. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this specification, and these all fall within the scope of protection of this specification. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for regeneration control of a particulate filter, characterized in that, A first controller is applied to a vehicle, the vehicle further comprising: a power battery, an engine, and a second controller, the second controller being used to control the engine to operate in response to instructions from the first controller, and the regeneration control method for the particulate filter comprising: In response to the vehicle being in the in-situ regeneration mode of the particulate filter, when the remaining charge of the power battery is less than a first set value, a first control command is generated, which is used to instruct the second controller to increase the output torque of the engine; In response to the vehicle being in the in-situ regeneration mode of the particulate filter, when the remaining charge of the power battery is greater than a fourth set value, a second control command is generated. The second control command is used to instruct the second controller to reduce the output torque of the engine. The fourth set value is greater than the first set value. The second control command includes a third command and a fourth command. When the remaining charge of the power battery is greater than a fourth preset value, generating the second control command includes: When the remaining charge of the power battery is greater than a fourth set value, a torque difference value is obtained. The torque difference value includes the difference between the current torque of the engine and the target torque. The target torque includes the regeneration torque required by the particulate filter. When the torque difference is greater than the first torque threshold, the third instruction is generated based on the third step length. The third instruction is used to instruct the second controller to reduce the output torque of the engine by the third step length. When the torque difference is less than the first torque threshold, the fourth instruction is generated based on the fourth step length. The fourth instruction is used to instruct the second controller to reduce the output torque of the engine by the fourth step length; the third step length is greater than the fourth step length.

2. The method according to claim 1, characterized in that, When the remaining charge of the power battery is less than a first preset value, generating the first control command includes: When the remaining power of the power battery is less than a first set value, a power difference is determined based on the remaining power of the power battery. The power difference includes the difference between the remaining power of the power battery and the first set value. The adjustment step size is determined based on the adjustment parameters, including the power difference. The first control command is generated based on the adjustment step size; the first control command is specifically used to: instruct the second controller to increase the output torque of the engine by the adjustment step size; the adjustment step size is positively correlated with the electrical charge difference.

3. The method according to claim 2, characterized in that, The adjustment parameters also include at least one of the following: ambient temperature, current load of the power battery, and maximum charging power of the power battery.

4. The method according to claim 1, characterized in that, The first control command includes a first command and a second command; When the remaining charge of the power battery is less than a first preset value, generating the first control command includes: When the remaining charge of the power battery is less than a first set value and greater than a second set value, the first instruction is generated based on the first step length; the first instruction is used to instruct the second controller to increase the output torque of the engine by the first step length. When the remaining charge of the power battery is less than the second set value and greater than the third set value, the second instruction is generated based on the second step size; the second instruction is used to instruct the second controller to increase the output torque of the engine by the second step size; the first set value is greater than the second set value, the second set value is greater than the third set value, and the first step size is less than the second step size.

5. The method according to claim 1, characterized in that, When the remaining charge of the power battery is less than a first preset value, generating the first control command includes: When the remaining charge of the power battery is less than the first set value, the first control command is generated based on the first set step size; the first control command is used to instruct the second controller to increase the output torque of the engine by the first set step size.

6. A vehicle, characterized in that, include: The system comprises a first controller, a second controller, a power battery, and an engine, wherein the second controller is used to control the engine to operate in response to instructions from the first controller. The first controller is configured to: in response to the vehicle being in the in-situ regeneration mode of the particulate filter, when the remaining charge of the power battery is less than a first set value, generate a first control command, the first control command being used to instruct the second controller to increase the output torque of the engine; In response to the vehicle being in the in-situ regeneration mode of the particulate filter, when the remaining charge of the power battery is greater than a fourth set value, a second control command is generated. The second control command is used to instruct the second controller to reduce the output torque of the engine. The fourth set value is greater than the first set value. The second control command includes a third command and a fourth command. When the remaining charge of the power battery is greater than a fourth preset value, generating the second control command includes: When the remaining charge of the power battery is greater than a fourth set value, a torque difference value is obtained. The torque difference value includes the difference between the current torque of the engine and the target torque. The target torque includes the regeneration torque required by the particulate filter. When the torque difference is greater than the first torque threshold, the third instruction is generated based on the third step length. The third instruction is used to instruct the second controller to reduce the output torque of the engine by the third step length. When the torque difference is less than the first torque threshold, the fourth instruction is generated based on the fourth step length. The fourth instruction is used to instruct the second controller to reduce the output torque of the engine by the fourth step length; the third step length is greater than the fourth step length.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the regeneration control method for the particle trap according to any one of claims 1 to 5.

Images