Particle trap regeneration control method and device and vehicle

Abstract

The invention discloses a particle trap regeneration control method and device and a vehicle, belongs to the technical field of vehicle control, and solves the problems that the driving experience of a user is reduced and the fuel economy of the vehicle is reduced due to parking regeneration caused by frequent parking in the prior art. The method comprises the following steps: judging whether the particulate filter meets a preset regeneration condition or not based on the relationship between the actual carbon load of the particulate filter monitored and obtained in real time and a threshold value set by a carbon load prediction model, the relationship between the electric quantity of a vehicle battery and the electric quantity of a regeneration critical battery corresponding to the start regeneration of the particulate filter, and the working condition of the vehicle, and regenerating the particle trap meeting the preset regeneration condition by adopting a matched regeneration mode. High-efficiency and low-power regeneration of the particulate filter can be achieved, the parking regeneration frequency of a user is reduced, and the fuel economy of a vehicle is improved.

Description

Technical Field

[0001] The present invention belongs to the field of automobile control technology, and in particular relates to a method and device for controlling electric and thermal coordinated regeneration of a particulate filter, and a hybrid vehicle. Background Art

[0002] A particulate filter is a ceramic filter installed in the exhaust system of a diesel engine. It can capture particulate emissions before they enter the atmosphere. Based on the fuel type, particulate filters are divided into diesel particulate filters (DPF) and gasoline particulate filters (GPF).

[0003] In recent years, motor vehicle pollutant emission standards have changed significantly, with emission limits for pollutants further lowered, and exhaust emission standards for hybrid vehicles have also been raised accordingly. Particulate matter is one of the main pollutants in exhaust emissions. To reduce pollutant emissions from hybrid vehicle exhaust and respond to upgraded emission regulations, a common practice is to add a particulate filter to the vehicle's exhaust system to filter the particulate matter in the exhaust. When the particulate filter is operating, particulate matter in the exhaust gas will accumulate and remain on the porous media wall of the filter body, thereby capturing and filtering the particulate matter in the exhaust gas. However, during the use of the particulate filter, the captured particulate matter will continue to accumulate, and as particulate matter continues to accumulate within the particulate filter, it will affect the normal operation of the particulate filter.

[0004] To ensure the particulate filter's filtering capacity, it typically monitors for overload in real time. If overload is detected, the user is prompted to park the vehicle for regeneration. However, existing regeneration methods require the user to park the vehicle to trigger the regeneration function and wait for the regeneration process to complete before resuming driving. Furthermore, frequent overloads require frequent parking, which can negatively impact the user's driving experience and reduce fuel economy. Summary of the Invention

[0005] The present invention solves one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the present invention aims to provide a particulate filter regeneration control method, device, and vehicle. This method comprehensively determines whether the particulate filter meets preset regeneration conditions by analyzing the relationship between the actual carbon load of the particulate filter (obtained through real-time monitoring) and the threshold value set by the carbon load prediction model, the relationship between the vehicle battery level and the critical regeneration battery level corresponding to the initiation of particulate filter regeneration, and the vehicle's operating conditions. Particulate filters that meet the preset regeneration conditions are regenerated using a matching regeneration mode, while particulate filters that do not meet the preset regeneration conditions are stopped. This method achieves high-efficiency, low-power regeneration of the particulate filter, which helps reduce the frequency of parking regeneration and improve vehicle fuel economy. It also avoids extending charging time due to particulate filter regeneration, which can delay the user's normal journey. The present invention solves the technical problem in the prior art of frequently parking for parking regeneration, which reduces the user's driving experience and reduces vehicle fuel economy.

[0007] To achieve the above object, the present invention provides a particulate filter regeneration control method, the method comprising:

[0008] Real-time monitoring and acquisition of the actual carbon load of the particulate filter and the vehicle battery charge;

[0009] determining whether the particulate filter meets preset regeneration conditions based on a relationship between an actual carbon load of the particulate filter and a threshold value set by a carbon load prediction model, a relationship between a battery level of the vehicle and a critical regeneration battery level corresponding to initiating regeneration of the particulate filter, and a vehicle operating condition;

[0010] The particulate trap that meets the preset regeneration conditions is regenerated using a matching regeneration mode.

[0011] In this technical solution, the actual carbon load of the particulate filter is calculated by real-time monitoring of the pressure signal provided by the pressure sensors at both ends of the particulate filter, the vehicle battery power is obtained by implementing monitoring, the threshold value set by the carbon load prediction model is mainly determined based on the calibration of the entire vehicle, and multiple threshold values are set with the real-time pressure of the particulate filter monitored by the pressure difference sensor as an auxiliary indicator; the present invention is based on the relationship between the actual carbon load of the particulate filter and the threshold value set by the carbon load prediction model, the relationship between the vehicle battery power and the regeneration critical battery power corresponding to the start-up regeneration of the particulate filter, and combined with the vehicle's operating condition as a parking charging condition or an engine running condition, to determine whether the particulate filter meets the preset regeneration conditions, and execute the matching particulate filter regeneration control mode according to the actual situation, which can achieve high-efficiency and low-power regeneration of the particulate filter, effectively avoid the occurrence of user complaints due to frequent parking regeneration, and is beneficial to improving vehicle fuel economy.

[0012] In some embodiments of the present invention, the thresholds set by the carbon load prediction model include a first preset carbon load threshold, a second preset carbon load threshold, and a third preset carbon load threshold, wherein the first preset carbon load threshold is less than the second preset carbon load threshold and the second preset carbon load threshold is less than the third preset carbon load threshold.

[0013] In this technical solution, the threshold setting criteria for the carbon load prediction model are primarily based on vehicle calibration, with multiple thresholds set using the real-time pressure of the particulate filter monitored by a differential pressure sensor as an auxiliary indicator. Specifically, the pressure signal captured by the differential pressure sensor is assigned to three dimensions: low, medium, and high, from small to large. The corresponding thresholds for the carbon load prediction model are set as a first preset carbon load threshold, a second preset carbon load threshold, and a third preset carbon load threshold, respectively. The first preset carbon load threshold is less than the second preset carbon load threshold, and the second preset carbon load threshold is less than the third preset carbon load threshold. The multiple thresholds set in the carbon load prediction model are compared with the actual carbon load of the particulate filter monitored in real time as one of the factors used to determine whether the particulate filter meets the preset regeneration conditions. This factor, combined with the vehicle battery charge and vehicle operating conditions, is used to determine whether the particulate filter meets the preset regeneration conditions or does not meet the preset regeneration conditions. The corresponding regeneration mode is then activated for particulate filters that meet the preset regeneration conditions, or regeneration is stopped for particulate filters that do not meet the preset regeneration conditions. The carbon load prediction model threshold is an important indicator for determining the particulate filter regeneration conditions / regeneration termination conditions, enabling the vehicle to execute corresponding particulate filter regeneration modes under different operating conditions. This can effectively achieve high-efficiency, low-power regeneration of the particulate filter and improve vehicle fuel economy.

[0014] In some embodiments of the present invention, the preset regeneration conditions include:

[0015] First preset regeneration condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is greater than or equal to the first preset carbon load threshold, the actual carbon load of the particulate filter is less than the third preset carbon load threshold, and the vehicle battery power is greater than or equal to the regeneration critical battery power corresponding to initiating regeneration of the particulate filter;

[0016] Second preset regeneration condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is greater than or equal to the second preset carbon load threshold, the actual carbon load of the particulate filter is less than the third preset carbon load threshold, and the vehicle battery power is less than the regeneration critical battery power corresponding to initiating regeneration of the particulate filter;

[0017] The third preset regeneration condition: when it is determined that the vehicle is in the engine running condition, the actual carbon load of the particulate trap is greater than or equal to the third preset carbon load threshold.

[0018] In this technical solution, the setting of the preset regeneration conditions is based on the relationship between the actual carbon load of the particulate filter and the threshold value set by the carbon load prediction model, the relationship between the vehicle battery power and the regeneration critical battery power corresponding to the start-up regeneration of the particulate filter, and a comprehensive judgment based on whether the vehicle's operating condition is a parking charging condition or an engine operating condition. Based on the above factors, three preset regeneration conditions are obtained, corresponding to different regeneration modes, to achieve high-efficiency and low-power regeneration of the particulate filter.

[0019] In some embodiments of the present invention, when the preset regeneration condition meets the first preset regeneration condition, the particulate filter is heated and regenerated by an external power supply, and the charging power consumed by the regeneration of the particulate filter is controlled to be less than or equal to 30% of the actual charging power, and the first particulate filter regeneration mode is executed.

[0020] In this technical solution, when the first regeneration condition is met, the first particulate filter regeneration mode is executed, heating and regenerating the vehicle's particulate filter via an external power source. The proportion of charging power consumed in this regeneration mode to the actual charging power is limited. While the vehicle battery is charging, the particulate filter is heated by the high-voltage current from the external power source, and charging power is dynamically allocated. This achieves high-efficiency, low-power regeneration of the particulate filter, effectively avoiding user complaints caused by frequent parking regeneration and preventing extended charging times and travel delays due to particulate filter regeneration.

[0021] In some embodiments of the present invention, when the preset regeneration condition meets the second preset regeneration condition, pulse heating is started to heat and regenerate the particulate filter, and the charging power consumed by the regeneration of the particulate filter is controlled to be less than or equal to 60% of the actual charging power. At the same time, the duty cycle of the pulse heating is set to be less than or equal to 30%, and the second particulate filter regeneration mode is executed.

[0022] In this technical solution, when the second preset regeneration condition of the preset regeneration is met, a second particulate filter regeneration mode is executed, initiating pulse heating to heat and regenerate the vehicle's particulate filter. The proportion of charging power consumed by the regeneration mode to the actual charging power is limited, and the pulse heating duty cycle is also set. The pulse heating mode is employed while the vehicle battery is charging. By dynamically allocating the proportion of charging power consumed by regeneration and combining it with the pulse heating duty cycle, high-efficiency, low-power regeneration of the particulate filter can be achieved. This also prevents extended charging times and delays to the user's normal journey due to particulate filter regeneration. Although the present invention consumes a significant proportion of charging power during regeneration, the pulse heating mode uses intermittent power to heat the particulate filter and sets a pulse heating duty cycle. Averaged over each heating cycle, the power consumed by regeneration has a minimal impact on the actual charging power. This prevents overheating and damage to the particulate filter while improving thermal efficiency, achieving high-efficiency, low-power regeneration of the particulate filter and effectively avoiding user complaints caused by frequent parking regeneration.

[0023] In some embodiments of the present invention, when the preset regeneration condition satisfies the third preset regeneration condition, the high-temperature exhaust gas generated by the engine combustion passes through the particulate filter and burns and regenerates the carbon particles accumulated on the particulate filter, thereby executing a third particulate filter regeneration mode.

[0024] In this technical solution, a third particulate filter regeneration mode is executed when the third pre-set regeneration condition is met. This mode is applicable when the actual carbon load of the particulate filter is high, that is, when the actual carbon load of the particulate filter is greater than or equal to the maximum threshold set by the carbon load prediction model. In this case, the vehicle is operating under the engine-on condition. Due to the high amount of carbon particles accumulated in the particulate filter, the normal operation of the particulate filter is affected and it is prone to clogging. In this case, the third particulate filter regeneration mode uses the high-temperature exhaust gas generated by engine combustion to directly heat and regenerate the particulate filter. This rapid heating and low energy consumption enable rapid regeneration of the particulate filter, which helps improve vehicle fuel economy. This regeneration mode can quickly reduce the actual carbon load of the particulate filter. Once the staged regeneration is complete and the particulate filter is operational, the vehicle can wait for the next parking charging condition to execute a matching regeneration mode based on the relationship between the actual carbon load of the particulate filter and the threshold set by the carbon load prediction model, as well as the relationship between the vehicle battery level and the critical regeneration battery level corresponding to initiating particulate filter regeneration.

[0025] The present invention rationally regenerates the particulate filter by adopting a matching regeneration mode for the particulate filter that meets the preset regeneration conditions, thereby achieving high-efficiency and low-power regeneration of the particulate filter, which is beneficial to improving the fuel economy of the vehicle; and it can also avoid extending the charging time due to the regeneration of the particulate filter, which delays the user's normal journey.

[0026] In some embodiments of the present invention, the method further includes: when regenerating the particulate trap, real-time monitoring of whether the particulate trap meets a preset regeneration termination condition, and stopping regeneration of the particulate trap that meets the preset regeneration termination condition.

[0027] In this technical solution, the particulate filter in regeneration mode is monitored in real time. When the preset regeneration termination conditions are met, the corresponding particulate filter regeneration mode is terminated promptly, which is beneficial for energy conservation and environmental protection. Specifically, when the vehicle is in the parking charging state, when the regeneration termination conditions are met, the corresponding regeneration mode is terminated promptly, and the vehicle enters the normal vehicle battery charging mode to complete the battery charging. This avoids the charging time being extended due to regeneration consuming charging power, which may affect the user's normal travel. When the vehicle is in the engine-running state, when the regeneration termination conditions are met, the corresponding regeneration mode is terminated promptly, which can prevent regeneration from affecting the normal vehicle driving.

[0028] In some embodiments of the present invention, the preset regeneration termination condition includes:

[0029] A first preset regeneration termination condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is less than the first preset carbon load threshold, and the vehicle battery power is greater than or equal to the regeneration critical battery power corresponding to the initiation of regeneration of the particulate filter;

[0030] A second preset regeneration termination condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is less than the second preset carbon load threshold, and the vehicle battery power is less than the regeneration critical battery power corresponding to the initiation of regeneration of the particulate filter;

[0031] The third preset regeneration termination condition: when it is determined that the vehicle is in the engine running state, the actual carbon load of the particulate trap is less than the third preset carbon load threshold.

[0032] This technical solution defines and explains the preset regeneration termination conditions. These conditions differ depending on whether the vehicle is in the parked charging mode or the engine-running mode. Based on these conditions, the corresponding particulate filter regeneration mode is terminated promptly, contributing to energy conservation and environmental protection. Specifically, when the vehicle is in the parked charging mode, when the regeneration termination conditions are met, the corresponding regeneration mode is terminated promptly, and the vehicle enters the regular vehicle battery charging mode to complete the battery charge. This prevents the charging time from being extended due to regeneration consuming charging power, which could affect the user's normal travel. When the vehicle is in the engine-running mode, when the regeneration termination conditions are met, the corresponding regeneration mode is terminated promptly, preventing regeneration from affecting the vehicle's normal operation.

[0033] In addition, the present invention also provides a particulate trap regeneration control device, the particulate trap regeneration control device includes

[0034] a collection module configured to obtain actual carbon load of the particulate filter and battery charge of the vehicle;

[0035] a determination module configured to determine whether the particulate trap satisfies a preset regeneration condition or a preset regeneration termination condition based on a relationship between an actual carbon load of the particulate trap acquired by the acquisition module and a threshold value set by a carbon load prediction model, and a relationship between the vehicle battery power acquired by the acquisition module and a regeneration critical battery power corresponding to initiating regeneration of the particulate trap;

[0036] a control module configured to, based on a determination result of the determination module, control the particulate trap to start regeneration if the preset regeneration condition is satisfied, or control the particulate trap to stop regeneration if the preset regeneration termination condition is satisfied;

[0037] The execution module is configured to execute a matching particulate trap regeneration mode based on the control instruction of the control module.

[0038] In this technical solution, the present invention provides a particulate filter regeneration control device corresponding to the particulate filter regeneration control method, wherein a collection module is used to collect and obtain the actual carbon load of the particulate filter and the vehicle battery power in real time. The actual carbon load of the particulate filter is calculated by real-time monitoring of pressure signals at both ends of the particulate filter. The pressure signals can be obtained by a differential pressure sensor disposed on the outside of the particulate filter, with detection probes of the differential pressure sensor disposed at both ends of the particulate filter to obtain the pressure signals. A judgment module is used to determine whether the particulate filter meets preset regeneration conditions or preset regeneration termination conditions based on the parameters obtained by the collection module. A control module is used to control regeneration or regeneration termination based on the judgment result provided by the judgment module. An execution module is used to execute a matching regeneration mode based on the control module's instructions. Based on the particulate filter regeneration control device, the matching regeneration mode is executed for particulate filters that meet the preset regeneration conditions, or regeneration is promptly terminated for particulate filters that meet the preset termination conditions. This can achieve high-efficiency, low-power regeneration of the particulate filter, reduce frequent parking regeneration, and improve vehicle fuel economy.

[0039] In some embodiments of the present invention, the control module includes

[0040] an electronic control unit configured to control the execution of a matching regeneration mode operation instruction or a regeneration stop operation instruction based on a determination result of the determination module and in combination with a vehicle operating condition;

[0041] The intelligent power distribution unit is configured to dynamically distribute the vehicle battery charging power and the particulate trap heating power when the electronic control unit controls the execution of the second particulate trap regeneration mode or the third particulate trap regeneration mode operation instruction.

[0042] In this technical solution, the composition of the control module is explained. The electronic control unit corresponds to the control module and controls the particulate filter that meets the preset regeneration conditions to start regeneration based on the judgment result of the judgment module, or controls the particulate filter that meets the preset regeneration termination conditions to stop regeneration. The intelligent power distribution unit is used to dynamically distribute the vehicle battery charging power and the power consumed by the particulate filter heating when the vehicle is in a charging condition and the electronic control unit controls the execution of the regeneration mode.

[0043] In some embodiments of the present invention, the particulate filter regeneration control device further includes an execution module, which includes

[0044] a high-voltage electric thermal energy regeneration unit configured to heat the particulate trap and execute the second particulate trap regeneration mode when the particulate trap meets preset regeneration conditions and meets the second particulate trap regeneration mode;

[0045] The pulse heating unit is configured to heat the particulate trap and execute the third particulate trap regeneration mode when the particulate trap meets a preset regeneration condition and meets a third particulate trap regeneration mode.

[0046] In this technical solution, the execution module, as the specific execution component, adopts different heating methods for different regeneration modes. The high-voltage electric heat energy regeneration unit is used to heat the particulate filter in the second particulate filter regeneration mode, specifically using an external power supply. The pulse heating unit is used to heat the particulate filter in the third particulate filter regeneration mode, specifically using pulse heating. By using different heating methods for different regeneration modes, high-efficiency and low-power regeneration of the particulate filter can be achieved, reducing frequent parking regeneration.

[0047] Furthermore, the present invention also provides a vehicle including the particulate trap regeneration control device.

[0048] In this technical solution, the vehicle adopts the particulate filter regeneration control device of the present invention. When the vehicle is in the parking charging condition, when the actual carbon load of the particulate filter is less than the maximum threshold value set by the carbon load prediction model, the particulate filter is regenerated by an external power supply or pulse heating; when the vehicle is in the engine running condition, it is only necessary to perform engine combustion to burn and regenerate the carbon particles accumulated on the particulate filter when the actual carbon load of the particulate filter is greater than or equal to the maximum threshold value set by the carbon load prediction model; the present invention is based on the actual carbon load of the particulate filter and the change of the vehicle battery power and combines the vehicle's working condition to execute a matching particulate filter regeneration mode, which can achieve high-efficiency and low-power regeneration of the particulate filter, can effectively avoid user complaints caused by frequent parking regeneration, enhance the user's driving experience, and is conducive to improving the vehicle's fuel efficiency.

[0049] Compared with the prior art, the above technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0050] The particulate filter regeneration control method and device provided by the present invention are applied to a vehicle. When it is determined that the vehicle is in a parking charging condition, a comprehensive judgment is made based on the relationship between the actual carbon load of the particulate filter monitored in real time and the threshold value set by the carbon load prediction model, and the relationship between the vehicle battery power and the regeneration critical battery power corresponding to the start of regeneration of the particulate filter, and different particulate filter regeneration modes are executed. This can achieve high-efficiency and low-power regeneration of the particulate filter, effectively avoid the occurrence of user complaints caused by frequent parking regeneration, and improve the user's driving experience; it can also avoid the inconvenience caused to the user by extending the charging time due to regeneration.

[0051] It can be seen from the above technical solutions that additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0053] Figure 1 2 is a schematic diagram of the overall flow of a particulate trap regeneration control method according to an embodiment of the present invention;

[0054] Figure 2 is a schematic diagram of a particulate filter regeneration control method according to one embodiment of the present invention;

[0055] Figure 3 is a schematic diagram of a particulate trap regeneration control device provided according to one embodiment of the present invention;

[0056] Figure 4 is a schematic diagram of the working process of a particle collector provided according to one embodiment of the present invention;

[0057] Figure 5 is a schematic structural diagram of a particle collector provided according to one embodiment of the present invention;

[0058] Figure 6 FIG. 4 is a cross-sectional view of a post-processing package assembly of a particulate trap according to one embodiment of the present invention.

[0059] In the above figures: 10, air filter; 20, turbocharger; 30, intercooler heat dissipation module; 40, engine; 50, catalytic converter; 60, particulate filter, 601, intake assembly, 6011, intake flange, 6012, intake pipe, 6013, intake end cone, 602, after-treatment packaging assembly, 6021, after-treatment purification unit, 6022, gasket, 6023, silicon carbide heating film, 6024, packaging shell, 603, outlet assembly, 6031, outlet end cone, 6032, outlet pipe, 6033, outlet flange; 70, muffler; 80, air compressor. DETAILED DESCRIPTION

[0060] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0061] In the embodiments of the present application, prefixes such as "first" and "second" are used only to distinguish different description objects and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers to distinguish description objects in the embodiments of the present application does not constitute a restriction on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and the use of such prefixes should not constitute an unnecessary restriction. In addition, in the description of this embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0062] In the description of the present invention, it should be understood that the terms "middle", "two ends", "one end", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0063] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another 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 of some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0065] The present invention is described in detail below by way of exemplary embodiments, but it should be understood that elements, structures, and features of one embodiment may be beneficially combined in other embodiments without further description.

[0066] A hybrid vehicle is a vehicle whose drive system is composed of two or more simultaneously operating individual drive systems. Based on the hybrid drive connection method, hybrid vehicles are categorized as series hybrids, parallel hybrids, and hybrid hybrids. Due to the problem of carbon particle accumulation in hybrid vehicles, particulate filter regeneration is required. Conventional methods trigger the parking regeneration function while the vehicle is parked, requiring the vehicle to resume driving only after the regeneration process is complete. However, frequent parking regeneration can negatively impact the user's driving experience, resulting in a poor driving experience. While existing technologies utilize engine combustion for passive regeneration while the vehicle is in motion, this continues to generate carbon particles, resulting in low regeneration efficiency and impacting normal driving. Existing technologies utilize parking power generation for particulate filter regeneration, but due to the varying operating characteristics of engines across different vehicle types, the degree of carbon particle accumulation and regeneration frequency vary. Existing solutions cannot effectively balance charging time with particulate filter regeneration. This means that particulate filter regeneration can impact the normal charging time, disrupting user travel plans and resulting in a poor driving experience.

[0067] To address the above-mentioned issues, the present invention provides a particulate filter regeneration control method, device, and vehicle. These methods address the problem of regenerating the particulate filter using different regeneration modes under different vehicle operating conditions, thereby avoiding the need to stop the vehicle for regeneration while driving. The particulate filter control method provided in embodiments of the present invention is applied to hybrid vehicles. Based on a comprehensive assessment of the vehicle's operating conditions, the actual carbon load of the particulate filter, and the vehicle's battery charge, different particulate filter regeneration control modes are implemented, thereby improving vehicle fuel economy. When the vehicle is in the charging condition, the silicon carbide heating film of the particulate filter is directly driven or pulse-heated by the high-voltage current of the external power supply for regeneration; when the vehicle engine is in the driving condition, the high-temperature exhaust gas generated by the engine combustion passes through the particulate filter, and the carbon particles accumulated on the particulate filter are burned and regenerated; the above scheme of the present invention can not only avoid frequent parking regeneration, but also dynamically allocate the charging power and the vehicle's particulate filter regeneration power during parking charging, so as to avoid extending the charging time due to the consumption of charging power due to regeneration, which brings inconvenience to the user's travel; through the particulate filter regeneration control method of the present invention, high-efficiency and low-power regeneration of the particulate filter can be achieved, which can effectively avoid the occurrence of user complaints caused by frequent parking regeneration, improve the user's driving experience, and improve the vehicle's fuel economy.

[0068] Figure 1 is a schematic diagram of the overall flow of a particulate trap regeneration control method provided according to an embodiment of the present invention. Figure 2 This is a schematic diagram of a particulate filter regeneration control method provided by an embodiment of the present invention. Figure 1 and attached Figure 2 As shown, the control method of the present invention includes the following steps:

[0069] S1. Real-time monitoring and acquisition of the actual carbon load of the particulate filter and the vehicle battery power.

[0070] In the present invention, the vehicle monitors the actual carbon loading of the particulate filter and the vehicle battery charge in real time. The actual carbon loading of the particulate filter is calculated by real-time monitoring of the pressure signal across the particulate filter. Those skilled in the art can calculate the actual carbon loading of the particulate filter based on the pressure difference across the particulate filter. Assuming the actual carbon loading of the particulate filter is θ, the vehicle battery charge is A, and the critical regeneration battery charge corresponding to initiating regeneration of the particulate filter is A0.

[0071] S2. Determining whether the particulate filter meets preset regeneration conditions based on a relationship between an actual carbon load of the particulate filter and a threshold value set by a carbon load prediction model, a relationship between the vehicle battery level and a critical regeneration battery level corresponding to initiating regeneration of the particulate filter, and a vehicle operating condition.

[0072] In some embodiments of the present invention, the thresholds set by the carbon load prediction model include a first preset carbon load threshold α, a second preset carbon load threshold β, and a third preset carbon load threshold γ, wherein the first preset carbon load threshold α is less than the second preset carbon load threshold β and the second preset carbon load threshold β is less than the third preset carbon load threshold γ, that is, α<β<γ is satisfied. The setting standard of the carbon load threshold is mainly based on the calibration of the whole vehicle, and the real-time pressure of the particulate filter monitored by the pressure difference sensor is used as an auxiliary indicator to set multiple thresholds. Specifically, the pressure signal captured by the pressure difference sensor is set to low, medium and high dimensions from small to large, and the thresholds of the carbon load prediction model are respectively set to the first preset carbon load threshold α, the second preset carbon load threshold β and the third preset carbon load threshold γ. Among them, the first preset carbon load threshold α and the third preset carbon load threshold γ are both set according to actual needs. The first preset carbon load threshold α can be understood as the critical value of the particulate filter overload when the vehicle is in the parking charging condition, and the third preset carbon load threshold γ can be understood as the critical value of the particulate filter overload when the vehicle is in the engine running condition, that is, it is used to measure whether the particulate filter needs to be regenerated under the engine running condition. The carbon load prediction model threshold serves as an important indicator for judging the particulate filter regeneration conditions / regeneration termination conditions. It enables the vehicle to determine which particulate filter regeneration mode to adopt based on the carbon load under different operating conditions. This can achieve high-efficiency and low-power regeneration of the particulate filter, effectively avoiding user complaints caused by frequent parking regeneration, and is beneficial to improving vehicle fuel economy.

[0073] In some embodiments of the present invention, the preset regeneration conditions include:

[0074] First preset regeneration condition: when it is determined that the vehicle is in the parking charging state, the actual carbon load θ of the particulate filter is greater than or equal to the first preset carbon load threshold α, and the actual carbon load θ of the particulate filter is less than the third preset carbon load threshold γ, that is, α≤θ<γ, and the vehicle battery power A is greater than or equal to the regeneration critical battery power A0 corresponding to the initiation of regeneration of the particulate filter, that is, A≥A0;

[0075] Second preset regeneration condition: When it is determined that the vehicle is in the parking charging state, the actual carbon load θ of the particulate filter is greater than or equal to the second preset carbon load threshold β, and the actual carbon load θ of the particulate filter is less than the third preset carbon load threshold γ, and the vehicle battery power A is less than the regeneration critical battery power A0 corresponding to the starting regeneration of the particulate filter, that is, A <A0;

[0076] The third preset regeneration condition: when it is determined that the vehicle is in the engine running condition, the actual carbon load θ of the particulate trap is greater than or equal to the third preset carbon load threshold γ, that is, θ≥γ.

[0077] In the present invention, the preset regeneration conditions are determined based on the relationship between the actual carbon load of the particulate filter and the threshold value set by the carbon load prediction model, the relationship between the vehicle battery level and the critical regeneration battery level corresponding to the initiation of regeneration of the particulate filter, and the comprehensive judgment of whether the vehicle is in a parking charging condition or an engine operating condition. Based on the above factors, three preset regeneration conditions are obtained, corresponding to different regeneration modes, to achieve high-efficiency, low-power regeneration of the particulate filter. The three preset regeneration conditions set by the present invention include regeneration conditions when the vehicle is in a parking charging condition or an engine operating condition. Based on the threshold value set by the carbon load prediction model, when the actual carbon load of the particulate filter is less than the third preset carbon load threshold value, that is, the actual carbon load of the particulate filter is less than the maximum threshold value set by the carbon load prediction model, although the number of carbon particles enriched in the particulate filter is large, the particulate filter can still be used normally and can be regenerated when the vehicle is in the parking charging condition. The specific regeneration conditions are determined based on the relationship between the actual carbon load of the particulate filter and the first preset carbon load threshold value and the second preset carbon load threshold value. The present invention determines whether the vehicle's particulate filter meets the preset regeneration conditions by combining the actual carbon load of the particulate filter, the vehicle's battery charge, and the vehicle's operating conditions to match different regeneration modes and rationally regenerate the vehicle's particulate filter. This allows for high-efficiency, low-power regeneration of the particulate filter, effectively avoiding frequent parking regeneration and enhancing the user's driving experience.

[0078] S3. Regenerate the particulate trap that meets the preset regeneration conditions using a matching regeneration mode.

[0079] In some embodiments of the present invention, when the preset regeneration condition meets the first preset regeneration condition, the particulate filter is heated and regenerated by an external power supply, and the charging power consumed by the regeneration of the particulate filter is controlled to be less than or equal to 30% of the actual charging power, and the first particulate filter regeneration mode is executed.

[0080] In the present invention, when the first preset regeneration condition is met, a first particulate filter regeneration mode is executed, heating and regenerating the particulate filter's silicon carbide heating film via an external power source. The ratio of charging power consumed in this regeneration mode to actual charging power is limited. While the vehicle battery is charging, the vehicle's particulate filter is heated by a high-voltage current from the external power source. The particulate filter regeneration power is dynamically allocated to the charging power, achieving high-efficiency, low-power regeneration of the particulate filter. This effectively avoids user complaints caused by frequent parking regeneration and prevents extended charging times and travel delays due to particulate filter regeneration. The external power source is a charging station or other device capable of charging the vehicle battery.

[0081] In some embodiments of the present invention, when the preset regeneration condition meets the second preset regeneration condition, pulse heating is started to heat and regenerate the particulate filter, and the charging power consumed by the regeneration of the particulate filter is controlled to be less than or equal to 60% of the actual charging power. At the same time, the duty cycle of the pulse heating is set to be less than or equal to 30%, and the second particulate filter regeneration mode is executed.

[0082] In the present invention, when the second preset regeneration condition is met, a second particulate filter regeneration mode is executed, using a pulse heating mode to regenerate the particulate filter's silicon carbide heating film. The ratio of charging power consumed in this regeneration mode to the actual charging power is limited, and the pulse heating duty cycle is also set. For example, within a one-minute period, the particulate filter's silicon carbide heating film is heated for 0.3 minutes to promote particulate filter regeneration, and the remaining 0.7 minutes are unheated. During the second particulate filter regeneration mode, a high amount of carbon particles adhered to the particulate filter requires a high charging power consumption. By using the pulse heating mode while the vehicle battery is being charged, the dynamic allocation of particulate filter regeneration power and charging power, combined with the pulse heating duty cycle, achieves high-efficiency, low-power particulate filter regeneration. This also avoids extended charging time due to particulate filter regeneration, which could disrupt the user's normal journey. In this regeneration mode, although the proportion of charging power consumed by regeneration is larger than that in the first particulate filter regeneration mode, since the pulse heating mode is used to heat the particulate filter through intermittent power supply and the duty cycle of the pulse heating is set, on average in each heating cycle, the power consumed by the regeneration of the particulate filter has a smaller impact on the actual charging power than the first particulate filter regeneration mode. Through intermittent power supply heating, the particulate filter can be avoided from overheating and damage and the thermal efficiency can be improved, thereby realizing high-efficiency and low-power regeneration of the particulate filter, which can effectively avoid the occurrence of user complaints caused by frequent parking regeneration.

[0083] In some embodiments of the present invention, when the preset regeneration condition meets the third preset regeneration condition, the high-temperature exhaust gas generated by the engine combustion passes through the particulate trap and burns and regenerates the carbon particles accumulated on the particulate trap, executing a third particulate trap regeneration mode.

[0084] In the present invention, when the third preset regeneration condition is met, the third particulate filter regeneration mode is executed. This mode adjusts the engine combustion model to increase the temperature of the particulate filter and achieve regeneration. The engine combustion model refers to the high temperature and duration generated by engine combustion. The high-temperature exhaust gas generated by engine combustion passes through the particulate filter to burn and regenerate the accumulated carbon particles. This mode is suitable for vehicles with a high actual carbon loading in the particulate filter, that is, when the actual carbon loading in the particulate filter is greater than or equal to the maximum threshold set by the carbon loading prediction model. In this case, when the vehicle is operating under engine conditions, the high amount of carbon particles accumulated in the particulate filter can affect the normal operation of the particulate filter and easily cause clogging. In this case, the third particulate filter regeneration mode uses the high-temperature exhaust gas generated by engine combustion to directly heat and regenerate the particulate filter. This rapid temperature increase and low energy consumption enable rapid regeneration of the particulate filter, which in turn improves vehicle fuel economy. This regeneration mode can quickly reduce the actual carbon load of the particulate filter. When the stage regeneration is completed and the particulate filter can operate normally, it can wait for the next parking charging condition and then execute a matching regeneration mode based on the relationship between the actual carbon load of the particulate filter and the threshold set by the carbon load prediction model, as well as the relationship between the vehicle battery power and the regeneration critical battery power corresponding to the initiation of regeneration of the particulate filter.

[0085] S4. When regenerating the particulate trap, monitor in real time whether the particulate trap meets a preset regeneration termination condition, and stop regenerating the particulate trap if the preset regeneration termination condition is met.

[0086] In some embodiments of the present invention, the preset regeneration termination condition includes:

[0087] A first preset regeneration termination condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is less than the first preset carbon load threshold, and the vehicle battery power is greater than or equal to the regeneration critical battery power corresponding to the initiation of regeneration of the particulate filter;

[0088] A second preset regeneration termination condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is less than the second preset carbon load threshold, and the vehicle battery power is less than the regeneration critical battery power corresponding to the initiation of regeneration of the particulate filter;

[0089] The third preset regeneration termination condition: when it is determined that the vehicle is in the engine running state, the actual carbon load of the particulate trap is less than the third preset carbon load threshold.

[0090] The present invention defines and explains the preset regeneration termination conditions. These conditions differ depending on whether the vehicle is in the parked charging mode or the engine-running mode. Based on these conditions, the corresponding particulate filter regeneration mode is promptly terminated, contributing to energy conservation and environmental protection. Specifically, when the vehicle is in the parked charging mode, when the regeneration termination conditions are met, the corresponding regeneration mode is promptly terminated, and the vehicle enters the regular vehicle battery charging mode to complete battery charging. This prevents regeneration from consuming charging power and extending charging time, which could affect the user's normal travel. When the vehicle is in the engine-running mode, when the regeneration termination conditions are met, the corresponding regeneration mode is promptly terminated, preventing regeneration from affecting normal vehicle operation.

[0091] Reference Attachment Figure 3 As shown, the present invention also provides a particulate trap regeneration control device, comprising a collection module configured to obtain the actual carbon load of the particulate trap and the battery power of the vehicle;

[0092] a determination module configured to determine whether the particulate trap satisfies a preset regeneration condition or a preset regeneration termination condition based on a relationship between an actual carbon load of the particulate trap acquired by the acquisition module and a threshold value set by a carbon load prediction model, and a relationship between the vehicle battery power acquired by the acquisition module and a regeneration critical battery power corresponding to initiating regeneration of the particulate trap;

[0093] a control module configured to control the particulate trap that meets the preset regeneration condition to start regeneration, or control the particulate trap that meets the preset regeneration termination condition to stop regeneration, based on a determination result of the determination module;

[0094] The execution module is configured to execute a matching particulate filter regeneration mode based on the control instruction of the control module.

[0095] The acquisition module of the present invention obtains the actual carbon loading of the particulate filter by calculating the pressure signal at both ends of the particulate filter in real time. The acquisition module integrates a first sensor and a second sensor. The first sensor is used to obtain the actual carbon loading of the particulate filter. Specifically, the first sensor is a differential pressure sensor with detection probes located at both ends of the particulate filter. The differential pressure sensor is used to monitor the pressure difference between the two ends of the particulate filter and calculate the actual carbon loading of the particulate filter based on the pressure difference. The second sensor is used to obtain the vehicle battery charge.

[0096] In some embodiments of the present invention, the determination module includes a first determination unit configured to determine a relationship between the actual carbon load of the particulate filter and a threshold value set by the carbon load prediction model; and a second determination unit configured to determine a relationship between the vehicle battery level and a critical regeneration battery level corresponding to initiating regeneration of the particulate filter. The determination results of the first and second determination units are combined to determine whether the particulate filter meets a preset regeneration condition or a preset regeneration termination condition.

[0097] In the invention, the first judgment unit determines that when the vehicle is in a parking charging condition, the actual carbon load of the particulate trap is greater than or equal to the first preset carbon load threshold, and the actual carbon load of the particulate trap is less than the third preset carbon load threshold, and the second judgment unit determines that when the vehicle battery power is greater than or equal to the regeneration critical battery power corresponding to the initiation of regeneration of the particulate trap, the particulate trap satisfies the preset regeneration condition and the first particulate trap regeneration mode, and when the actual carbon load of the particulate trap is less than the first preset carbon load threshold, the particulate trap satisfies the preset regeneration termination condition;

[0098] The first judgment unit determines that when the vehicle is in a parking charging condition, the actual carbon load of the particulate trap is greater than or equal to the second preset carbon load threshold, and the actual carbon load of the particulate trap is less than the third preset carbon load threshold, and the second judgment unit determines that when the vehicle battery power is less than a regeneration critical battery power corresponding to initiating regeneration of the particulate trap, the particulate trap satisfies a preset regeneration condition and a second particulate trap regeneration mode, and when the actual carbon load of the particulate trap is less than the second preset carbon load threshold, the particulate trap satisfies a preset regeneration termination condition;

[0099] The first judgment unit determines that when the vehicle is in the engine operating condition, the actual carbon load of the particulate trap is greater than or equal to the third preset carbon load threshold, and determines that the particulate trap meets the preset regeneration condition and satisfies the third particulate trap regeneration mode. When the actual carbon load of the particulate trap is within the interval between the second preset carbon load threshold and the third preset carbon load threshold, it determines that the particulate trap meets the preset regeneration termination condition and executes the conventional battery charging mode.

[0100] In some embodiments of the invention, the control module includes

[0101] an electronic control unit configured to control the execution of a matching regeneration mode operation instruction or a regeneration stop operation instruction based on a determination result of the determination module and in combination with a vehicle operating condition;

[0102] The intelligent power distribution unit is configured to dynamically distribute the charging power of the vehicle battery and the power consumed by the heating of the particulate filter when the electronic control unit controls the execution of the operation instructions of the first particulate filter regeneration mode or the second particulate filter regeneration mode under the condition that the vehicle is in the parking charging condition.

[0103] In the technical solution of the present invention, the control module controls the execution of corresponding operation instructions based on the judgment result given by the judgment module. The electronic control unit, based on the judgment results of the first judgment unit and the second judgment unit, combines the working condition of the vehicle, and the control logic determines to execute the matching regeneration mode operation instruction or the regeneration termination mode operation instruction. Among them, when the vehicle is in the parking charging condition, the intelligent power distribution unit is used to monitor the charging power of the vehicle battery and the battery power of the vehicle in real time, and dynamically distributes electric energy by combining the vehicle control strategy for the charging power of the vehicle battery and the power consumed by heating the silicon carbide heating film of the particulate filter, so as to achieve high-efficiency and low-power regeneration of the particulate filter. The external power supply is used to charge the vehicle and can directly heat the silicon carbide heating film of the particulate filter, and then the heating of the particulate filter can be realized, and the regeneration of the particulate filter can be realized. Specifically, the external power supply is a charging pile or other power sources.

[0104] The working principle of the intelligent power distribution unit is to make a comprehensive judgment based on the vehicle battery power A and the actual carbon loading θ of the particulate filter when the vehicle is in the parking charging condition. When the actual carbon loading θ of the particulate filter is less than the first preset carbon loading threshold α, that is, θ < α, the intelligent power distribution unit directly uses all the charging power for charging the vehicle battery; when the actual carbon loading θ of the particulate filter is greater than or equal to the first preset carbon loading threshold α, combined with the vehicle battery power A, the intelligent power distribution unit can distribute the charging power, and use a part of the charging power for charging the vehicle battery, and the other part of the charging power for the power consumed by heating the silicon carbide heating mold of the particulate filter, that is, the power consumed by regeneration control; when α ≤ θ < γ and A ≥ A0, the power consumed by regeneration control is less than or equal to 30% of the actual charging power; when β ≤ θ < γ and A < A0, the power consumed by regeneration control is less than or equal to 60% of the actual charging power. By using the intelligent power distribution unit to dynamically distribute electric energy, high-efficiency and low-power regeneration of the particulate filter can be achieved.

[0105] When the particulate filter meets the preset regeneration conditions and meets the third particulate filter regeneration mode, the electronic control unit directly controls the engine to burn to generate high-temperature exhaust gas to pass through the particulate filter, and burns and regenerates the carbon particles accumulated on the particulate filter.

[0106] In some embodiments of the invention, the execution module includes a high-voltage electric thermal energy regeneration unit, a pulse heating unit, and a particulate filter. The high-voltage electric thermal energy regeneration unit is configured to heat the silicon carbide membrane of the particulate filter using an external power supply to regenerate the particulate filter when the particulate filter meets preset regeneration conditions and a first particulate filter regeneration mode. The pulse heating unit is configured to heat the silicon carbide membrane of the particulate filter using pulse heating to regenerate the particulate filter when the particulate filter meets preset regeneration conditions and a second particulate filter regeneration mode. The particulate filter is configured to capture and filter particulate matter in vehicle exhaust.

[0107] An embodiment of the present invention further provides a vehicle including the particulate filter regeneration control device. Compared to the prior art, the vehicle of the present application, by providing a particulate filter regeneration control device, compares the relationship between the actual carbon load of the particulate filter and a threshold value set by a carbon load prediction model. When the vehicle is in a parked charging state, the vehicle determines whether a preset regeneration condition is met by combining the relationship between the vehicle battery level and the regeneration critical battery level corresponding to the initiation of regeneration of the particulate filter. The vehicle then executes a corresponding regeneration control mode for particulate filters that meet the preset regeneration conditions, or stops regeneration for particulate filters that meet the preset regeneration termination conditions. This helps reduce the user's parking regeneration frequency and improves vehicle fuel economy.

[0108] The vehicle integrates a collection module, a judgment module, a control module, and an execution module. The collection module is configured to acquire the actual carbon load of the particulate filter and the vehicle battery charge level. The judgment module is configured to determine whether the particulate filter meets a preset regeneration condition or a preset regeneration termination condition based on the relationship between the actual carbon load of the particulate filter acquired by the collection module and a threshold value set by a carbon load prediction model, and the relationship between the vehicle battery charge level acquired by the collection module and a critical regeneration battery charge level corresponding to initiating regeneration of the particulate filter. The control module is configured to control the particulate filter to initiate regeneration if it meets the preset regeneration condition, or to stop regeneration if it meets the preset regeneration termination condition, based on the judgment result of the judgment module. The execution module is configured to execute or stop regeneration of the particulate filter based on control instructions from the control module.

[0109] In some embodiments of the present invention, the acquisition module integrates a first sensor and a second sensor, wherein the first sensor is used to obtain the actual carbon load of the particulate filter. Specifically, the first sensor is a differential pressure sensor, and the detection probes of the differential pressure sensor are respectively arranged at both ends of the particulate filter. The differential pressure sensor is used to monitor the pressure difference at both ends of the particulate filter, and the actual carbon load of the particulate filter is calculated based on the pressure difference; the second sensor is used to obtain the vehicle battery power.

[0110] In some embodiments of the present invention, the judgment module includes a first judgment unit, which is configured to judge the relationship between the actual carbon load of the particulate filter and the threshold value set by the carbon load prediction model; and a second judgment unit, which is configured to judge the relationship between the vehicle battery power and the regeneration critical battery power corresponding to the initiation of regeneration of the particulate filter.

[0111] In some embodiments of the present invention, the control module integrates an electronic control unit and an intelligent power distribution unit, wherein the electronic control unit is configured to control logic to determine whether to execute a matching regeneration mode operation instruction or a regeneration termination mode operation instruction based on the judgment results of the first judgment unit and the second judgment unit in combination with the working conditions of the vehicle; the intelligent power distribution unit is configured to monitor the vehicle battery charging power and the vehicle battery power in real time when the vehicle is in a parking charging condition, and dynamically distribute electrical energy based on the vehicle battery charging power and the power consumed by heating the silicon carbide heating film of the particulate filter in combination with the vehicle control strategy.

[0112] In some embodiments of the present invention, the execution module integrates a high-voltage electric thermal energy regeneration unit, a pulse heating unit, and a particulate filter. The high-voltage electric thermal energy regeneration unit is configured to heat the particulate filter's silicon carbide membrane using an external power supply to regenerate the particulate filter when the particulate filter meets preset regeneration conditions and a second particulate filter regeneration mode. The pulse heating unit is configured to heat the particulate filter's silicon carbide membrane using pulse heating to regenerate the particulate filter when the particulate filter meets preset regeneration conditions and a third particulate filter regeneration mode. The particulate filter is configured to capture and filter particulate matter in vehicle exhaust. When the second particulate filter regeneration mode is in effect, the air compressor is turned on and air filtered by the air filter is transferred to the post-processing purification unit to regenerate the particulate filter.

[0113] Reference Attachment Figure 4As shown, the exhaust emission system of the vehicle includes an air filter 10, which is used to filter the external air into clean air; a turbocharger 20, which is connected to the air filter 10, and is used to compress the clean air filtered by the air filter 10 to increase the intake air density; an intercooler heat dissipation module 30, which is used to reduce the air compressed by the turbocharger 20 and reduce the intake air temperature; a catalytic converter 50, which is used to catalytically convert the exhaust gas generated after combustion of the engine 40; an air compressor 80, that is, an air compressor, which is used to pressurize the air flowing into the particulate filter 60. In one embodiment, the air compressor 80 is arranged between the air filter 10 and the particulate filter 60, and is used to pressurize the air filtered by the air filter 10 and then flow into the particulate filter 60. In the present invention, the particulate filter 60 is connected to the catalytic converter 50. The working principle of the particulate filter 60 is as follows: the external air is filtered into clean air by the air filter, and then passes through the turbocharger 20 and the intercooler heat dissipation module 30 in sequence and enters the engine 40 to participate in combustion. The exhaust gas generated after combustion passes through the catalytic converter 50 and the particulate filter 60 in sequence for purification, and then enters the muffler 70 for noise treatment and is discharged into the external environment.

[0114] Reference Attachment Figure 5 and attached Figure 6 As shown, in some embodiments of the present invention, the particulate filter 60 includes an air intake assembly 601, a post-processing package assembly 602, and an air outlet assembly 603. The air intake assembly 601 includes an air intake flange 6011 disposed at one end of the particulate filter 60; an air intake pipe 6012 connected to the air intake flange 6011; an air intake cone 6013 having a trumpet-shaped opening, with the smaller opening of the air intake cone 6013 connected to the air intake pipe 6012. One end of the post-processing package assembly 602 is connected to the larger opening of the air intake cone 6013. The post-processing package assembly 602 includes a package housing 6024; a gasket 6022 disposed on the inner wall of the package housing 6024; a silicon carbide heating film 6023 disposed between the inner wall of the package housing 6024 and the gasket 6022; and a post-processing purification unit 6021 disposed within the interior space of the package housing 6024. The silicon carbide heating film 6043 can be heated by an external power source, thereby heating the post-processing purification unit 6041 and regenerating the particulate filter 60. The outlet assembly 603 includes an outlet cone 6031 with a trumpet-shaped opening. The larger opening of the outlet cone 6031 is connected to the end of the post-processing package assembly 602 away from the inlet cone 6013; an outlet pipe 6032 is connected to the smaller opening of the outlet cone 6031; and an outlet flange 6033 is connected to the end of the outlet pipe 6032 away from the outlet cone 6031. In some embodiments, the detection probes of the differential pressure sensor are respectively disposed on the inlet cone 6013 and the outlet pipe 6032.

[0115] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A particulate filter regeneration control method, characterized in that: The method comprises: Real-time monitoring and acquisition of the actual carbon load of the particulate filter and the vehicle battery charge; determining whether the particulate trap meets preset regeneration conditions based on a relationship between an actual carbon load of the particulate trap and a threshold value set by a carbon load prediction model, a relationship between the vehicle battery level and a critical regeneration battery level corresponding to initiating regeneration of the particulate trap, and a vehicle operating condition; The particulate trap that meets the preset regeneration conditions is regenerated using a matching regeneration mode.

2. The particulate filter regeneration control method according to claim 1, characterized in that: The thresholds set by the carbon load prediction model include a first preset carbon load threshold, a second preset carbon load threshold, and a third preset carbon load threshold, wherein the first preset carbon load threshold is less than the second preset carbon load threshold, and the second preset carbon load threshold is less than the third preset carbon load threshold.

3. The particulate filter regeneration control method according to claim 2, characterized in that: The preset regeneration conditions include: First preset regeneration condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is greater than or equal to the first preset carbon load threshold, the actual carbon load of the particulate filter is less than the third preset carbon load threshold, and the vehicle battery power is greater than or equal to the regeneration critical battery power corresponding to initiating regeneration of the particulate filter; Second preset regeneration condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is greater than or equal to the second preset carbon load threshold, the actual carbon load of the particulate filter is less than the third preset carbon load threshold, and the vehicle battery power is less than the regeneration critical battery power corresponding to initiating regeneration of the particulate filter; The third preset regeneration condition: when it is determined that the vehicle is in the engine running condition, the actual carbon load of the particulate trap is greater than or equal to the third preset carbon load threshold.

4. The particulate filter regeneration control method according to claim 3, characterized in that: When the preset regeneration condition satisfies the first preset regeneration condition, the particulate trap is heated and regenerated by an external power supply, and the charging power consumed by the regeneration of the particulate trap is controlled to be less than or equal to 30% of the actual charging power, thereby executing a first particulate trap regeneration mode.

5. The particulate filter regeneration control method according to claim 3, characterized in that: When the preset regeneration condition meets the second preset regeneration condition, pulse heating is started to heat and regenerate the particulate trap, and the charging power consumed by the regeneration of the particulate trap is controlled to be less than or equal to 60% of the actual charging power. At the same time, the duty cycle of the pulse heating is set to be less than or equal to 30%, and the second particulate trap regeneration mode is executed.

6. The particulate filter regeneration control method according to claim 3, characterized in that: When the preset regeneration condition satisfies the third preset regeneration condition, high-temperature exhaust gas generated by engine combustion passes through the particulate trap and burns and regenerates carbon particles accumulated on the particulate trap, executing a third particulate trap regeneration mode.

7. The particulate filter regeneration control method according to claim 2, characterized in that: The method further includes: when regenerating the particulate trap, monitoring in real time whether the particulate trap meets a preset regeneration termination condition, and stopping regeneration of the particulate trap that meets the preset regeneration termination condition.

8. The particulate filter regeneration control method according to claim 7, characterized in that: The preset regeneration termination conditions include: A first preset regeneration termination condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is less than the first preset carbon load threshold, and the vehicle battery power is greater than or equal to the regeneration critical battery power corresponding to the initiation of regeneration of the particulate filter; A second preset regeneration termination condition: when it is determined that the vehicle is in the parking charging mode, the actual carbon load of the particulate filter is less than the second preset carbon load threshold, and the vehicle battery power is less than the regeneration critical battery power corresponding to the initiation of regeneration of the particulate filter; The third preset regeneration termination condition: when it is determined that the vehicle is in the engine running state, the actual carbon load of the particulate trap is less than the third preset carbon load threshold.

9. A particulate filter regeneration control device, characterized in that: The particulate trap regeneration control device includes a collection module configured to obtain actual carbon load of the particulate filter and battery charge of the vehicle; a determination module configured to determine whether the particulate trap meets a preset regeneration condition based on a relationship between an actual carbon load of the particulate trap acquired by the acquisition module and a threshold value set by a carbon load prediction model, and a relationship between the vehicle battery power acquired by the acquisition module and a regeneration critical battery power corresponding to initiating regeneration of the particulate trap; a control module configured to control the particulate trap that meets the preset regeneration condition to execute a matching regeneration mode based on a determination result of the determination module; The execution module is configured to execute a matching particulate trap regeneration mode based on the control instruction of the control module. 10 . A vehicle comprising the particulate trap regeneration control device according to claim 9 .

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