Particle trap regeneration system and vehicle

Abstract

The utility model provides a particle trap regeneration system and a vehicle, which comprise a tail gas emission line and a regeneration line connected in parallel with the tail gas emission line, and also comprise a controller in communication connection with the tail gas emission line and the regeneration line, and a battery pack in conductive connection with the regeneration line, in the regeneration process, independent operation can be achieved without starting the engine, so that the problem of extra fuel consumption caused by dependence on the exhaust temperature of the engine in a traditional regeneration mode is solved, and the technical bottleneck that the regeneration efficiency is low under the working condition of idling or low speed of the engine can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle tail gas treatment technical field, more specifically, relate to a kind of particle trap regeneration system and vehicle. BACKGROUND

[0002] Particle trap is the ceramic filter installed in vehicle engine emission system, for reducing the particulate emission in tail gas. In the working process of particle trap, tail gas passes through the porous wall of ceramic filter at a certain flow rate, and particulate matter is stored in the porous wall by diffusion, interception, gravity and inertia, so that the particulate in tail gas can be trapped and filtered.

[0003] With the use of vehicle, particle trap will be gradually blocked by particulate matter, resulting in exhaust back pressure rising. This will affect the performance of engine, make fuel economy decline, power output weaken, and even may cause engine failure. In order to ensure that the particle trap has good working condition, the current particle trap is usually detected in real time whether it is overloaded, and when the particle trap is detected to be overloaded, the user is prompted that the particle trap is overloaded and needs to be regenerated. However, in the existing regeneration mode, the user needs to stop the vehicle to trigger the stop regeneration function, and after waiting for the regeneration process to be completed, the vehicle can be driven again. Moreover, the engine needs to be started during the regeneration process, and the air temperature is raised by relying on the engine, which causes the increase of regeneration energy consumption, and the starting of engine also produces new particulate matter, affecting the regeneration efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of particle trap regeneration system and vehicle, to solve the problem of particle trap regeneration when needing to start engine, resulting in the increase of energy consumption, and the problem of low efficiency.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0006] In the first aspect, a particle trap regeneration system is provided, which includes a tail gas emission circuit and a regeneration circuit connected in parallel to the tail gas emission circuit, and further includes a controller communicatively connected to the tail gas emission circuit and the regeneration circuit, and a battery pack conductively connected to the regeneration circuit. The tail gas emission circuit includes an air cleaner, a turbocharger, an intercooler, an engine, a catalytic converter, a particle trap and a muffler connected in sequence. The regeneration circuit includes the air cleaner, an air compressor, a temperature raising assembly and the particle trap connected in sequence. The air compressor, the temperature raising assembly and the battery pack are respectively conductively connected to an external power source. Alternatively, the air compressor and the temperature raising assembly are respectively conductively connected to the battery pack.

[0007] In driving mode, the controller controls the tail gas emission circuit to be in an on state, and the regeneration circuit to be in a stop state.

[0008] In the regeneration mode, the controller controls the exhaust emission line to be in a stop state and the regeneration line to be in a conductive state, and when an external power source is connected, the external power source provides electric energy for the air compressor, the temperature raising assembly and the battery pack; when the external power source is not connected, the battery pack provides electric energy for the air compressor and the temperature raising assembly.

[0009] In combination with the first aspect, in a possible implementation manner, the exhaust emission line further comprises a switch valve arranged downstream of the air filter, the switch valve is in communication connection with the controller, and the switch valve is arranged between the air filter and the turbocharger and / or arranged between the catalytic converter and the particulate trap. In the regeneration mode, the controller immediately controls the switch valve to be closed, so that the entire exhaust emission line is completely disconnected, the engine stops working, the battery pack provides power for the vehicle, and the gas completely enters the regeneration line, thereby improving the regeneration efficiency and avoiding the high-temperature regeneration gas from flowing reversely into the engine or the turbocharger to cause thermal damage to the components. In the driving mode, the switch valve remains in an open state, so as to ensure smooth exhaust gas and enable the engine to work normally, and at this time, the engine or the battery pack can provide power for the vehicle, and the switch valve is used to realize quick switching between the driving mode and the regeneration mode, thereby improving the response efficiency.

[0010] In combination with the first aspect, in a possible implementation manner, the exhaust emission line further comprises a differential pressure sensor connected in parallel with the particulate trap, the differential pressure sensor is used to detect the pressure difference between the air inlet end and the air outlet end of the particulate trap and is in communication connection with the controller. By monitoring the pressure difference between the air inlet end and the air outlet end of the particulate trap in real time and transmitting the data to the controller in real time, the deposition degree of particulate matter can be accurately judged. When the detected pressure difference reaches a preset value, the controller controls the system to switch to the regeneration mode, so as to regenerate the particulate trap in time and ensure that the particulate trap always remains in an optimal working state.

[0011] In combination with the first aspect, in a possible implementation manner, the temperature raising assembly comprises a shell and a heating element arranged in the shell, and further comprises a starting switch connected to the heating element, the starting switch is in communication connection with the controller, and the heating element is used to be in conductive connection with the external power source or the battery pack. The starting switch quickly responds according to the instruction of the controller, rapidly starts the heating program in the regeneration mode, and significantly shortens the time required for waiting for manual operation in the conventional regeneration system. The external power source or the battery pack provides electric energy for the heating element, so as to ensure stable operation of the heating element, thereby enabling the high-temperature gas flow to quickly reach the inside of the particulate trap.

[0012] With reference to the first aspect, in a possible implementation manner, the temperature raising assembly further comprises a temperature detector arranged in the shell, and a regulating valve arranged at an air outlet end of the shell, and the temperature detector and the regulating valve are respectively communicatively connected to the controller. The regulating valve controls the rate of air flowing out of the shell, and when the temperature detector detects that the temperature in the shell reaches a preset temperature, a standard-reaching signal is generated, and the controller controls the regulating valve to open according to the standard-reaching signal, so that air rapidly flows into the particle trap.

[0013] With reference to the first aspect, in a possible implementation manner, one side of the shell is provided with an air inlet, and the other side is provided with an air outlet, the air inlet and the air outlet are respectively located at opposite sides of the shell, and the heating member is arranged in the shell in a spiral or wave shape. The gas enters the shell through the air inlet, exchanges heat with the heating member, and then is discharged from the shell through the air outlet. Since the air inlet and the air outlet are located at opposite sides of the shell, the flow path of the gas in the shell is lengthened, and the gas can be fully heat-exchanged. In addition, since the heating member is in a spiral or wave shape, the contact area between the heating member and the gas is increased, and the heat exchange efficiency is improved.

[0014] With reference to the first aspect, in a possible implementation manner, the air inlet and the air outlet are oppositely distributed along a first path, and the heating member is arranged in multiple along a second path, and the second path is parallel or perpendicular to the first path. If the heating member is arranged in multiple along a direction parallel to the first path, the gas flow enters the shell and sequentially passes through multiple heating members, realizing multiple heat exchanges, so that the gas can be fully heated. If the heating member is arranged in multiple along a direction perpendicular to the first path, the gas flow enters the shell and exchanges heat with the multiple layers of heating members, increasing the contact area between the gas flow and the heating member, and improving the heat exchange efficiency.

[0015] With reference to the first aspect, in a possible implementation manner, the temperature raising assembly further comprises a heat preservation layer wrapped outside the shell. The heat preservation layer reduces the heat exchange between the inside and the outside of the shell, ensures that the temperature in the shell can quickly reach and stably maintain in the optimal temperature range of particle oxidation, and improves the heat exchange efficiency between the gas and the heating member. The embodiment not only greatly shortens the regeneration preheating time, improves the response speed of the system, but also avoids the problem of incomplete regeneration caused by temperature fluctuation in the traditional system by maintaining temperature stability.

[0016] With reference to the first aspect, in a possible implementation manner, the particulate filter regeneration system further comprises a switching valve connected to the particulate filter, the switching valve being further connected to the catalytic converter and the temperature raising assembly, and being in communication connection with the controller, and the switching valve is configured to control switching of the particulate filter regeneration system between the driving mode and the regeneration mode. The switching valve realizes intelligent switching of the working mode and the driving mode of the particulate filter regeneration system, and the controller controls the flow path of the gas by directly controlling the switching valve, so that the system can realize seamless conversion between the driving mode and the regeneration mode.

[0017] The particulate filter regeneration system has the following advantages: compared with the prior art, the vehicle can be powered by the engine or the battery pack when the vehicle is normally driven. After the regeneration condition is reached, the controller switches the driving mode to the regeneration mode, the engine is no longer operated, and the external power supply or the battery pack is used to provide electric energy for the air compressor and the temperature raising assembly, so as to ensure that the gas flows along the regeneration circuit. During the regeneration process, the regeneration circuit can be independently operated without starting the engine, which not only avoids the problem of additional fuel consumption caused by the dependence of the engine exhaust temperature in the traditional regeneration mode, but also effectively prevents the problem of low regeneration efficiency in the engine idling or low-speed working condition. The air compressor and the temperature raising assembly in the regeneration circuit directly heat and oxidize the particulate filter, and the particulate filter does not need to be intentionally parked for regeneration when the particulate filter is overloaded, thereby improving the user experience of using the vehicle. After the external power supply is connected, the external power supply provides power for the particulate filter regeneration, which not only guarantees the high-power power supply demand during regeneration, but also charges the battery pack, so that the regeneration system can start immediately in response to the control instruction at any time, and is not limited by the driving state of the vehicle, thereby significantly improving the flexibility of the regeneration opportunity. When the external power supply is not connected, the battery pack not only provides power for the vehicle, but also provides electric energy for the temperature raising assembly and the air compressor, thereby ensuring normal operation of the regeneration circuit. The scheme of the present application physically separates the exhaust treatment path and the regeneration path, relies on the temperature raising assembly to heat air, does not need to start the engine, uses the controller to switch between the regeneration mode and the driving mode, avoids the problem of increased exhaust back pressure caused by delayed regeneration, and overall realizes double improvement of energy saving and emission reduction and convenience of using the vehicle.

[0018] In the second aspect, the utility model embodiment further provides a vehicle comprising the particulate filter regeneration system.

[0019] The vehicle provided by the utility model has the advantages that compared with the prior art, the vehicle can be powered by an engine or a battery pack when the vehicle is normally driven, a particulate trap regeneration system, after a regeneration condition is reached, the controller switches the driving mode to the regeneration mode, the engine is no longer operated, an external power source or the battery pack is used to provide electric energy for the air compressor and the temperature raising assembly, and the gas is ensured to flow along the regeneration circuit. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present utility model, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0021] Figure 1 The structure diagram of the particulate trap regeneration system provided by another embodiment of the present utility model is shown in the figure.

[0022] Figure 2 The structure diagram of the temperature raising assembly used in the embodiment of the present utility model is shown in the figure.

[0023] Figure 3 The structure diagram of the temperature raising assembly used in another embodiment of the present utility model is shown in the figure.

[0024] Figure 4 The structure diagram of the particulate trap regeneration system provided by another embodiment of the present utility model is shown in the figure.

[0025] Fig. 1, air filter; 2, turbocharger; 3, catalytic converter; 4, particulate trap; 5, muffler; 6, intercooler; 7, engine; 8, air compressor; 9, temperature raising assembly; 901, shell; 9011, air inlet; 9012, air outlet; 902, heating element; 903, heat insulation layer; 10, external power supply; 11, battery pack; 12, controller; 13, differential pressure sensor; 14, on-off valve; 15, switching valve. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be described in further detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0027] In the claims, specification and above drawings of the utility model, unless otherwise explicitly limited, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order. In the claims, specification and drawings of the utility model, the orientation terms "up", "down", "left", "right", "front", "rear", "inner side" are the same as the up-down direction, left-right direction, front-rear direction of the vehicle body, and the "inner side" is the side close to the passenger compartment in the left-right direction of the vehicle body, and vice versa. Unless otherwise stated, the remaining orientation words, such as "vertical", "clockwise", "counterclockwise" indicate the orientation or position relationship based on the orientation and position relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the utility model. In the claims, specification and above drawings of the utility model, unless otherwise explicitly limited, the terms such as "fixedly connected" or "fixedly connected" should be understood broadly, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements. In the claims, specification and above drawings of the utility model, the terms "include", "have" and their variants are intended to mean "include but are not limited to".

[0028] Please see Figures 1 to 4The particle trap regeneration system comprises a tail gas emission circuit and a regeneration circuit connected in parallel with the tail gas emission circuit, and further comprises a controller 12 connected in communication with the tail gas emission circuit and the regeneration circuit, and a battery pack 11 connected in conduction with the regeneration circuit; wherein the tail gas emission circuit comprises, in sequence, an air filter 1, a turbocharger 2, an intercooler 6, an engine 7, a catalytic converter 3, a particle trap 4 and a muffler 5; the regeneration circuit comprises, in sequence, the air filter 1, an air compressor 8, a temperature raising assembly 9 and the particle trap 4, and the air compressor 8, the temperature raising assembly 9 and the battery pack 11 are respectively connected in conduction with an external power source 10; or the air compressor 8 and the temperature raising assembly 9 are respectively connected in conduction with the battery pack 11; in the driving mode, the controller 12 controls the tail gas emission circuit to be in a conduction state and the regeneration circuit to be in a stop state; in the regeneration mode, the controller 12 controls the tail gas emission circuit to be in a stop state and the regeneration circuit to be in a conduction state, and when the external power source 10 is connected, the external power source 10 provides electric energy for the air compressor 8, the temperature raising assembly 9 and the battery pack 11; when the external power source 10 is not connected, the battery pack 11 provides electric energy for the air compressor 8 and the temperature raising assembly 9.

[0029] Compared with the prior art, the particle trap regeneration system provided by the utility model can provide power for the vehicle by the engine or the battery pack when the vehicle is normally driven. After the regeneration condition is reached, the controller 12 switches the driving mode to the regeneration mode, the engine no longer works, the external power source 10 or the battery pack 11 provides electric energy for the air compressor 8 and the temperature raising assembly 9, and the gas flows along the regeneration circuit. In the regeneration process, the regeneration circuit can independently operate without starting the engine 7, which not only avoids the problem of additional fuel consumption caused by the dependence of the exhaust temperature of the engine 7 in the traditional regeneration mode, but also effectively prevents the problem of low regeneration efficiency under the idling or low speed working condition of the engine 7. The air compressor 8 and the temperature raising assembly 9 in the regeneration circuit directly perform directional heating oxidation on the particle trap 4, without the need of intentionally parking for regeneration when the particle trap 4 is overloaded, thereby improving the experience of the user in using the vehicle. After the external power source 10 is connected, the external power source 10 provides power for the regeneration of the particle trap 4, which not only guarantees the high-power power demand during regeneration, but also charges the battery pack 11, so that the regeneration system can start immediately in response to the control instruction at any time, is not limited by the driving state of the vehicle, and significantly improves the flexibility of the regeneration opportunity. When the external power source 10 is not connected, the battery pack 11 not only provides power for the vehicle, but also provides electric energy for the temperature raising assembly 9 and the air compressor 8, thereby ensuring the normal operation of the regeneration circuit. The utility model physically separates the tail gas treatment path and the regeneration path, relies on the air heating of the temperature raising assembly 9, does not need to start the engine 7, uses the controller 12 to realize the switching between the regeneration mode and the driving mode, avoids the problem of the increase of exhaust back pressure caused by the regeneration delay, and overall realizes the double improvement of energy saving and emission reduction and the convenience of vehicle use.

[0030] Need to explain, "external power supply 10" refers to the vehicle in the battery pack 11 charging, power supply equipment that provides electric energy.

[0031] Need to explain, if the hybrid vehicle is equipped with a mobile power supply, the mobile power supply can be used as an external power supply 10, and the air compressor 8, the heating assembly 9 and the battery pack 11 can be powered, which can realize regeneration during vehicle driving, break the technical barrier of existing technology that must be parked for regeneration, and save user time.

[0032] Need to explain, the particulate trap 4 can be provided with a carbon load accumulation threshold beta, and when the accumulated carbon content of the particulate trap 4 is greater than or equal to beta, the regeneration mode of the particulate trap 4 is defined; the driving mode can be closed and the regeneration mode can be started by the controller 12.

[0033] Need to explain, the scheme in the utility model can be switched to the regeneration mode when the vehicle is parked for charging, and can be switched to the regeneration mode when the vehicle is driving. The specific type and working condition of the vehicle are determined.

[0034] Specifically, the controller 12 can be a control system provided with the vehicle.

[0035] In some embodiments, referring to Figure 1 and Figure 4 , the exhaust gas discharge circuit further comprises a switch valve 14 arranged downstream of the air filter 1, the switch valve 14 is in communication connection with the controller 12, and the switch valve 14 is arranged between the air filter 1 and the turbocharger 2 and / or between the catalytic converter 3 and the particulate trap 4.

[0036] The controllable switch valve 14 is arranged between the air filter 1 and the turbocharger 2 and / or between the catalytic converter 3 and the particulate trap 4, and the opening and closing state of the controllable switch valve 14 is accurately controlled by the controller 12, thereby realizing intelligent management and control of the air flow path. When it is needed to switch to the regeneration mode, the controller 12 controls the switch valve 14 to be closed, so that the entire exhaust gas discharge circuit is completely disconnected, the engine is no longer operated, the battery pack provides power for the vehicle, and the gas completely enters the regeneration circuit, thereby improving the regeneration efficiency and avoiding the reverse flow of high-temperature regeneration gas into the engine 7 or the turbocharger 2 to cause part heat damage. When it is needed to switch to the driving mode, the controller 12 controls the switch valve 14 to be kept fully open, so that the gas flows along the exhaust gas discharge circuit, and the engine can normally operate, at which time the engine or the battery pack can provide power for the vehicle. The embodiment realizes flexible and rapid switching between the driving mode and the regeneration mode by controlling the switch valve 14, without manual operation, thereby improving the switching efficiency.

[0037] In some embodiments, referring to Figure 1 and Figure 4The exhaust emission line also includes a differential pressure sensor 13 connected in parallel to the particulate filter 4. The differential pressure sensor 13 is used to detect the pressure difference between the inlet and outlet of the particulate filter 4 and is connected in communication with the controller 12.

[0038] The differential pressure sensor 13 monitors the pressure difference between the inlet and outlet of the particulate filter 4 in real time and transmits the data to the controller 12. The system can accurately determine the degree of particulate matter deposition. When the differential pressure sensor 13 detects that the pressure difference reaches a preset value, the controller 12 controls the system to switch to regeneration mode. In this embodiment, the real-time monitoring by the differential pressure sensor 13 avoids energy waste or performance degradation caused by premature or delayed regeneration. The controller 12 dynamically adjusts the regeneration timing based on the differential pressure data. When the pressure difference reaches the preset value, the regeneration program is automatically started, ensuring that the particulate filter 4 always remains in optimal working condition. This avoids both increased exhaust back pressure and decreased engine performance caused by untimely regeneration, and also prevents unnecessary frequent regeneration that leads to energy consumption. At the same time, the long-term accumulated differential pressure data can also be used to predict the remaining service life of the particulate filter 4, providing data support for preventive maintenance and significantly improving the reliability and economy of the system.

[0039] In some embodiments, please refer to Figures 2 to 3 The heating component 9 includes a housing 901 and a heating element 902 disposed within the housing 901. It also includes a start switch connected to the heating element 902. The start switch is communicatively connected to the controller 12. The heating element 902 is electrically connected to an external power supply 10 or a battery pack 11.

[0040] A heating element 902 is installed in the outer casing 901. The start switch is controlled to turn on or off according to the instructions of the controller 12. In regeneration mode, the heating element 902 is quickly activated, which significantly shortens the preheating waiting time required for regeneration. An external power source 10 or a battery pack 11 provides power to the heating element 902. The heating element 902 heats the air inside the outer casing 901, allowing the high-temperature airflow to quickly reach the interior of the particle collector 4, greatly improving the thermal energy utilization efficiency.

[0041] Optionally, the heating element 902 is located in the middle area of ​​the outer casing 901, and the outer periphery of the heating element 902 forms a heating space that allows air to pass through, thereby increasing the contact area with the air and improving the heating efficiency.

[0042] In some embodiments, not shown in the figures, the heating assembly 9 further includes a temperature detector disposed within the housing 901 and a regulating valve disposed at the air outlet of the housing 901, the temperature detector and the regulating valve being communicatively connected to the controller 12.

[0043] The adjusting valve controls the rate of the gas discharging from the shell 901. When the temperature detector detects that the temperature in the shell 901 reaches the preset temperature, a qualified signal is generated. The controller 12 controls the adjusting valve to open according to the qualified signal, so that the air flows into the particle trap 4 quickly. When the temperature detector detects that the temperature in the shell 901 is lower than the preset temperature, a low-temperature signal is generated. The controller 12 controls the adjusting valve to close or close small according to the low-temperature signal, so as to prolong the time of the air in the shell 901 and heat the air sufficiently. When the temperature detector detects that the temperature in the shell 901 is higher than the preset temperature, a high-temperature signal is generated. The controller 12 controls the adjusting valve to open large according to the high-temperature signal, so as to accelerate the air flow speed, and controls the heating element 902 to stop heating or reduce the heating power. The embodiment uses the temperature detector to monitor the temperature change in the shell 901 in real time, and transmits the data to the controller 12 in real time, so as to form a closed-loop temperature control system, ensure that the heating temperature is always stable in the optimal temperature range of the particulate matter oxidation, and avoid the problems of sintering of the filter core caused by too high temperature or the influence of the regeneration effect caused by insufficient temperature.

[0044] In some embodiments, referring to Figures 2 to 3 , the shell 901 is provided with an air inlet 9011 on one side and an air outlet 9012 on the other side. The air inlet 9011 and the air outlet 9012 are located on opposite sides of the shell 901. The heating element 902 is arranged in the shell 901 in a spiral or wave shape.

[0045] The gas enters the shell 901 through the air inlet 9011, exchanges heat with the heating element 902, and is discharged from the shell 901 through the air outlet 9012. Since the air inlet 9011 and the air outlet 9012 are located on opposite sides of the shell 901, the flow path of the gas in the shell 901 is prolonged, so that the gas can be fully heated. In addition, since the heating element 902 has a spiral or wave shape, the contact area between the heating element 902 and the gas is increased, and the heat exchange efficiency is improved.

[0046] Optionally, the heating element 902 is an electric heating wire.

[0047] In some embodiments, referring to Figure 3 , the air inlet 9011 and the air outlet 9012 are oppositely distributed along a first path, and the heating element 902 is arranged in a plurality of intervals along a second path. The second path is parallel or perpendicular to the first path.

[0048] If the heating element 902 is spaced in the direction parallel to the first path, the gas flow enters the shell 901 and sequentially passes through multiple heating elements 902, realizing multiple heat exchanges, so that the gas can be fully heated. If the heating element 902 is spaced in the direction perpendicular to the first path, the gas flow enters the shell 901 and contacts and exchanges heat with the multiple layers of distributed heating elements 902, increasing the contact area of the gas flow with the heating element 902 and improving the heat exchange efficiency. Optionally, the gas inlet 9011 and the gas outlet 9012 can correspond or not correspond in the direction perpendicular to the first path.

[0049] In some embodiments, referring to Figure 3 The temperature raising assembly 9 further comprises a heat preservation layer 903 wrapped outside the shell 901.

[0050] The heat preservation layer 903 reduces the heat exchange between the inner cavity of the shell 901 and the outside, ensures that the temperature inside the shell 901 can quickly reach and stably maintain in the optimal temperature range of particle oxidation, and improves the heat exchange efficiency of the gas and the heating element 902. The present embodiment not only greatly shortens the regeneration preheating time, improves the system response speed, but also avoids the problem of incomplete regeneration caused by temperature fluctuation in the traditional system by maintaining temperature stability. In addition, the heat preservation layer 903 also plays a role in heat insulation treatment, controls the surface temperature of the shell 901 within a safe range, prevents the risk of high-temperature scalding, and improves the system safety.

[0051] Optionally, the heat preservation layer 903 can be a foam heat preservation layer 903 or an asbestos tile.

[0052] In some embodiments, referring to Figure 4 The particulate filter regeneration system further comprises a switching valve 15 connected to the particulate filter 4, the switching valve 15 is also connected to the catalytic converter 3 and the temperature raising assembly 9, and is in communication connection with the controller 12, and the switching valve 15 is used to control the particulate filter regeneration system to switch between the driving mode and the regeneration mode.

[0053] The switching valve 15 realizes intelligent switching of the working mode and the driving mode of the particulate filter regeneration system, directly connects the particulate filter 4, the catalytic converter 3 and the temperature raising assembly 9, and is precisely controlled by the controller 12, so that the system can realize seamless conversion between the driving mode and the regeneration mode. In the driving mode, the switching valve 15 directly communicates the catalytic converter 3 with the particulate filter 4, ensuring smooth exhaust treatment process; when switching to the regeneration mode, the valve body immediately changes the passage direction to communicate the temperature raising assembly 9 with the particulate filter 4, while blocking the passage of the catalytic converter 3, which completely avoids the mutual interference of the exhaust gas and the regeneration gas flow. The rapid response control of the controller 12 to the switching valve 15 makes the mode conversion process complete quickly and does not affect the normal operation of the engine 7, shortening the switching time.

[0054] Optionally, the switching valve 15 is a three-way electromagnetic valve.

[0055] Based on the same inventive concept, the utility model also provides a kind of vehicle.The vehicle includes the particle trap regeneration system described above.

[0056] The vehicle provided by the utility model adopts the particle trap regeneration system described above, compared with prior art, after reaching the regeneration condition, the controller 12 switches the driving mode to the regeneration mode, and provides electric energy to the air compressor 8 and the temperature raising assembly 9 using the external power supply 10 or the battery pack 11, to ensure that the gas flows along the regeneration circuit.In the regeneration process, the regeneration circuit can be independently operated without starting the engine 7, which not only avoids the problem of additional fuel consumption caused by the dependence of the exhaust temperature of the engine 7 in the traditional regeneration mode, but also effectively prevents the problem of low regeneration efficiency under the idling or low-speed working condition of the engine 7.The air compressor 8 and the temperature raising assembly 9 in the regeneration circuit directly heat and oxidize the particle trap 4, without the need to intentionally park the vehicle for regeneration when the particle trap 4 is overloaded, improving the user's experience of using the vehicle.After connecting the external power supply 10, the external power supply 10 provides power for the regeneration of the particle trap 4, which not only guarantees the high-power power demand during regeneration, but also charges the battery pack 11, so that the regeneration system can start immediately in response to the control instruction at any time, without being limited by the driving state of the vehicle, significantly improving the flexibility of the regeneration opportunity.When the external power supply 10 is not connected, the battery pack 11 not only provides power for the vehicle, but also provides electric energy for the temperature raising assembly 9 and the air compressor 8, to ensure the normal operation of the regeneration circuit.The utility model separates the exhaust treatment path and the regeneration path physically, relies on the temperature raising assembly 9 to heat the air, does not need to start the engine 7, uses the controller 12 to switch between the regeneration mode and the driving mode, avoids the problem of increased exhaust back pressure caused by delayed regeneration, and overall achieves the dual improvement of energy saving and emission reduction and vehicle convenience.

[0057] The above only describes preferred embodiments of the utility model, and is not used to limit the utility model, any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A particulate filter regeneration system characterized by, The exhaust emission line and the regeneration line connected in parallel, the controller (12) connected in communication with the exhaust emission line and the regeneration line, and the battery pack (11) connected in conduction with the regeneration line; wherein the exhaust emission line comprises an air filter (1), a turbocharger (2), an intercooler (6), an engine (7), a catalytic converter (3), a particulate trap (4) and a muffler (5) connected in sequence; the regeneration line comprises the air filter (1), an air compressor (8), a temperature raising assembly (9) and the particulate trap (4) connected in sequence, and the air compressor (8), the temperature raising assembly (9) and the battery pack (11) are respectively connected in conduction with an external power source (10), or the air compressor (8) and the temperature raising assembly (9) are respectively connected in conduction with the battery pack (11); In the driving mode, the controller (12) controls the exhaust emission line to be in the on state and the regeneration line to be in the stop state; In the regeneration mode, the controller (12) controls the exhaust emission line to be in the stop state and the regeneration line to be in the on state, when the external power source (10) is connected, the external power source (10) provides electric energy for the air compressor (8), the temperature raising assembly (9) and the battery pack (11); when the external power source (10) is not connected, the battery pack (11) provides electric energy for the air compressor (8) and the temperature raising assembly (9).

2. The particulate filter regeneration system of claim 1, wherein, The exhaust emission line further comprises a switch valve (14) arranged downstream of the air filter (1), the switch valve (14) is connected in communication with the controller (12), and the switch valve (14) is arranged between the air filter (1) and the turbocharger (2), and / or between the catalytic converter (3) and the particulate trap (4).

3. The particulate filter regeneration system of claim 1, wherein, The exhaust emission line further comprises a differential pressure sensor (13) connected in parallel with the particulate trap (4), the differential pressure sensor (13) is used for detecting the pressure difference between the inlet and outlet of the particulate trap (4), and is connected in communication with the controller (12).

4. The particulate filter regeneration system of claim 1, wherein, The temperature raising assembly (9) comprises a shell (901) and a heating element (902) arranged in the shell (901), and further comprises a start switch connected with the heating element (902), the start switch is connected in communication with the controller (12), and the heating element (902) is connected in conduction with the external power source (10) or the battery pack (11).

5. The particulate filter regeneration system of claim 4, wherein, The temperature raising assembly (9) further comprises a temperature detector arranged in the shell (901) and a regulating valve arranged at the outlet of the shell (901), and the temperature detector and the regulating valve are respectively connected in communication with the controller (12).

6. The particulate filter regeneration system of claim 4, wherein, The shell (901) is provided with an air inlet (9011) on one side, and an air outlet (9012) on the opposite side of the air inlet (9011), the air inlet (9011) and the air outlet (9012) are located on opposite sides of the shell (901), and the heating element (902) is arranged in the shell (901) in a spiral or wave shape.

7. The particulate filter regeneration system of claim 6, wherein, The air inlet (9011) and the air outlet (9012) are oppositely distributed along a first path, and the heating element (902) is arranged in multiple along a direction parallel or perpendicular to the first path.

8. The particulate filter regeneration system of claim 4, wherein, The temperature raising assembly (9) further comprises a heat preservation layer (903) wrapped outside the shell (901).

9. The particulate filter regeneration system of claim 1, wherein, The particulate filter regeneration system further comprises a switching valve (15) connected to the particulate filter (4), the switching valve (15) is further connected to the catalytic converter (3) and the temperature raising assembly (9), and is in communication connection with the controller (12), and the switching valve (15) is used for controlling the particulate filter regeneration system to switch between the driving mode and the regeneration mode.

10. Vehicle, characterized in that The particulate filter regeneration system has any one of claims 1-9.

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