Waste Heat Recovery Control System, Method, Controller, Medium, Product and Vehicle

Abstract

The present application relates to a waste heat recovery control system, method, controller, medium, product, and vehicle, including: a thermoelectric generation module, a switching switch, and a controller. One end of the thermoelectric generation module is connected to the exhaust pipe of the vehicle engine, and the other end is connected to the condenser pipe of the motor cooling system; the switching switch is used to switch the connection state of the exhaust pipe and / or the condenser pipe; the controller is used to switch the operating state of the thermoelectric generation module through the switching switch according to the operating state of the vehicle. In the embodiments of the present application, by adjusting the switching switch according to the operating state of the vehicle to switch the operating state of the thermoelectric generation module, the thermoelectric generation module can adapt to the changes in the vehicle operating state for power generation, thereby ensuring the waste heat recovery effect of the vehicle.

Description

Technical Field

[0001] This application relates to the technical field of vehicle control, and particularly to a waste heat recovery control system, method, controller, medium, product, and vehicle. Background Art

[0002] During vehicle driving, a large amount of waste heat is usually generated, and reasonable utilization of this waste heat can effectively reduce resource waste.

[0003] However, the driving state of the vehicle varies, resulting in changes in the waste heat generated by the vehicle, thus affecting the waste heat recovery effect of the vehicle. Summary of the Invention

[0004] Embodiments of this application provide a waste heat recovery control system, method, controller, medium, product, and vehicle, aiming to improve the waste heat recovery effect of the vehicle.

[0005] Embodiments of this application provide a waste heat recovery control system, including a thermoelectric generation module, a switching switch, and a controller. One end of the thermoelectric generation module is connected to the exhaust pipe of the vehicle engine, and the other end is connected to the condensate pipe of the motor cooling system; the switching switch is used to switch the connection state of the exhaust pipe and / or the condensate pipe.

[0006] The controller is used to switch the operating state of the thermoelectric generation module through the switching switch according to the operating state of the vehicle.

[0007] In one embodiment, the thermoelectric generation module includes a cold-end radiator, a thermoelectric generation chip, and a hot-end collector. The hot-end collector is arranged on the exhaust pipe, and the cold-end radiator is arranged on the condensate pipe.

[0008] The thermoelectric generation chip generates electricity through the temperature difference between the cold-end radiator and the hot-end collector.

[0009] In one embodiment, the cold-end radiator is further provided with a heat dissipation film, and / or the hot-end collector is further provided with a temperature sensor.

[0010] In one embodiment, the switching switch includes a first switching switch on the first bypass passage of the condensate pipe of the motor cooling system, and the first switching switch is used to adjust the connection state of the first bypass passage.

[0011] In one embodiment, the switching the operating state of the thermoelectric generation module through the switching switch according to the operating state of the vehicle includes:

[0012] When the vehicle is started at normal temperature, or when the condensation temperature of the condensation pipe is higher than the required cold-end temperature of the thermoelectric power generation module, the first bypass passage is controlled to be connected through the first switching switch to reduce the cold-end temperature of the thermoelectric power generation module.

[0013] In one embodiment, the operation state of the thermoelectric power generation module is switched through the switching switch according to the operation state of the vehicle, including:

[0014] When the condensation temperature of the condensation pipe is less than or equal to the required cold-end temperature of the thermoelectric power generation module, the first bypass passage is controlled to be closed through the first switching switch to increase the cold-end temperature of the thermoelectric power generation module.

[0015] In one embodiment, the first bypass passage is controlled to be closed through the first switching switch to increase the cold-end temperature of the thermoelectric power generation module, including:

[0016] The first bypass passage is controlled to be closed through the first switching switch, so that after the condensate in the condensation pipe exchanges heat with the motor, the cold-end temperature of the thermoelectric power generation module is increased.

[0017] In one embodiment, when the vehicle is cold-started, the condensate after heat exchange with the motor is also used to heat the battery module and / or the air-conditioning module of the vehicle.

[0018] In one embodiment, the operation state of the thermoelectric power generation module is switched through the switching switch, including:

[0019] The opening degree of the first switching switch is adjusted to adjust the cold-end thermometer of the thermoelectric power generation module.

[0020] In one embodiment, the first bypass passage is used to connect the inlet side and the outlet side of the motor cooling system.

[0021] In one embodiment, the switching switch includes a second switching switch for a second bypass passage of the exhaust pipe of the vehicle engine, and the second switching switch is used to switch the connection state of the second bypass passage.

[0022] In one embodiment, the operation state of the thermoelectric power generation module is switched through the switching switch according to the operation state of the vehicle, including:

[0023] When the hot-end temperature of the thermoelectric power generation module exceeds the preset temperature, the second bypass passage is controlled to be connected through the second switching switch to reduce the hot-end temperature of the thermoelectric power generation module.

[0024] In one embodiment, the controller is further configured to:

[0025] Control to keep the operating condition of the engine of the vehicle unchanged, and adjust the operating condition of the motor of the vehicle.

[0026] In one embodiment, switching the operating state of the thermoelectric generation module according to the operating state of the vehicle by the switching switch includes:

[0027] When the hot-end temperature of the thermoelectric generation module does not exceed a preset temperature, control the second bypass path to be closed by the second switching switch to increase the hot-end temperature of the thermoelectric generation module.

[0028] In one embodiment, the second bypass path is used to connect the two sides of the thermoelectric generation module in the exhaust pipe.

[0029] In one embodiment, the controller is further configured to adjust the cold-end temperature and / or the hot-end temperature of the thermoelectric generation module to adjust the power generation power of the thermoelectric generation module.

[0030] In one embodiment, the controller is further configured to control the thermoelectric generation module to generate electricity at the maximum power generation power.

[0031] In one embodiment, the maximum power generation power is determined based on the change rate of the output power after the output voltage of the thermoelectric generation module is transformed.

[0032] In one embodiment, the thermoelectric generation module is further configured to be connected to the battery module of the vehicle to supply power to the battery module.

[0033] An embodiment of the present application further provides a waste heat recovery control method, which is applied to a waste heat recovery control system. The system includes a thermoelectric generation module, a switching switch, and a controller. One end of the thermoelectric generation module is connected to the exhaust pipe of the vehicle engine, and the other end is connected to the condensation pipe of the motor cooling system; the switching switch is used to switch the connection state of the exhaust pipe and / or the condensation pipe;

[0034] The method includes:

[0035] According to the operating state of the vehicle, switch the switching switch through the controller to switch the operating state of the thermoelectric generation module.

[0036] In one embodiment, switching the operating state of the thermoelectric generation module includes:

[0037] Adjust the cold-end temperature and / or the hot-end temperature of the thermoelectric generation module to adjust the power generation power of the thermoelectric generation module.

[0038] In one embodiment, adjusting the power generation of the thermoelectric power generation module includes:

[0039] Controlling the thermoelectric power generation module to generate electricity at the maximum power generation.

[0040] In one embodiment, the method further includes:

[0041] Controlling the thermoelectric power generation module to generate electricity at the maximum power generation based on the change rate of the output power after the output voltage of the thermoelectric power generation module is transformed.

[0042] In one embodiment, the method includes:

[0043] Applying a positive perturbation voltage at the initial output voltage and determining a first perturbation power based on a first perturbation current of the applied positive perturbation voltage;

[0044] Applying a negative perturbation voltage at the initial output voltage and determining a second perturbation power based on a second perturbation current of the applied negative perturbation voltage;

[0045] Updating the output voltage of the thermoelectric power generation module based on the first perturbation power and the second perturbation power to control the thermoelectric power generation module to generate electricity at the maximum power generation.

[0046] In one embodiment, updating the output voltage of the thermoelectric power generation module based on the first perturbation power and the second perturbation power to control the thermoelectric power generation module to generate electricity at the maximum power generation includes:

[0047] Updating the output voltage of the thermoelectric power generation module based on the numerical magnitude relationship among the first perturbation power, the second perturbation power, and the initial power corresponding to the initial output voltage to control the thermoelectric power generation module to generate electricity at the maximum power generation.

[0048] In one embodiment, the method further includes:

[0049] Adjusting the output voltage of the thermoelectric power generation module to the initial output voltage through closed-loop control.

[0050] An embodiment of the present application further provides a controller, including one or more processors and a memory, where the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the waste heat recovery control method as described in any one of the above.

[0051] The present application further provides a storage medium, including a computer program, and when the computer program runs on the controller, the computer program is used to cause the controller to execute the steps of the waste heat recovery control method as described in any one of the above.

[0052] The present application also provides a computer program product, including a computer program or instructions, which, when executed by a processor, implement the steps of the waste heat recovery control method as described in any one of the above.

[0053] The present application also provides a vehicle, which includes the waste heat recovery control system as described above, or includes the controller as described above, or is used to execute the steps of the waste heat recovery control method as described in any one of the above.

[0054] In the embodiments of the present application, by adjusting the switching switch according to the operating state of the vehicle to switch the operating state of the thermoelectric generation module, the thermoelectric generation module can generate electricity according to the change of the vehicle operating state, so as to ensure the waste heat recovery effect of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0056] Figure 1 It is a schematic structural diagram of a waste heat recovery control system provided by an embodiment of the present application;

[0057] Figure 2 It is a schematic structural diagram of a thermoelectric generation module provided by an embodiment of the present application;

[0058] Figure 3a It is another waste heat recovery control system provided by an embodiment of the present application;

[0059] Figure 3b It is yet another waste heat recovery control system provided by an embodiment of the present application;

[0060] Figure 4 It is a schematic diagram of the complete structure of a waste heat recovery control system provided by an embodiment of the present application;

[0061] Figure 5a It is a schematic diagram of the effect of coolant flow in a waste heat recovery control system provided by an embodiment of the present application;

[0062] Figure 5b It is a schematic diagram of the effect of high-temperature exhaust gas flow in a waste heat recovery control system provided by an embodiment of the present application;

[0063] Figure 6 It is a schematic diagram of the step flow of a waste heat recovery control method provided by an embodiment of the present application;

[0064] Figure 7 Schematic diagram of steps for adjusting the output voltage of a thermoelectric power generation module to operate at maximum power generation in an embodiment of the present application;

[0065] Figure 8 Flow chart of adjusting the output voltage of a thermoelectric power generation module to operate at maximum power generation in an embodiment of the present application;

[0066] Figure 9 Schematic diagram of the structure of a controller in an embodiment of the present application. Detailed implementation manners

[0067] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0068] In addition, "a plurality of" in the embodiments of the present application refers to two or more. "First" and "second" in the embodiments of the present application are used for distinguishing descriptions and should not be construed as implying relative importance.

[0069] To clearly understand the waste heat recovery control system, method, controller, medium, product, and vehicle provided in the embodiments of the present application, the relevant application scenarios of the present application will be described first. During vehicle driving, a large amount of waste heat is usually generated, and reasonable utilization of this waste heat can effectively reduce resource waste.

[0070] Based on this, some waste heat recovery technologies are provided in the related art. For example, a thermoelectric power generation module can be set between the engine water circulation loop and the drive motor water circulation loop, and power generation can be achieved by using the temperature difference between the engine water circulation loop and the drive motor water circulation loop. However, on the one hand, the temperature of the drive motor circulation loop used at the cold end in the above method is still relatively high, and the formed temperature difference is limited, making it difficult to recover a large amount of electricity. On the other hand, based on the complex and variable driving states of the vehicle, the recovery effect of the conventional waste heat recovery methods is not ideal.

[0071] Based on this, the present application provides a waste heat recovery control system, method, controller, medium, product, and vehicle, aiming to provide a solution that can stably and effectively recover the waste heat of the vehicle. For details, see the following description.

[0072] Specifically, please refer to Figure 1 , Figure 1The figure is a schematic structural diagram of a waste heat recovery control system provided by an embodiment of the present application. Specifically, it includes a thermoelectric power generation module 110, a changeover switch 120, and a controller 130. One end of the thermoelectric power generation module 110 is connected to the exhaust pipe of the vehicle engine, and the other end is connected to the condensate pipe of the motor cooling system. The changeover switch 120 can be used to switch the connection state of the exhaust pipe and / or the condensate pipe.

[0073] At this time, the controller 130 is configured to switch the operating state of the thermoelectric power generation module through the changeover switch according to the operating state of the vehicle.

[0074] Specifically, for the convenience of understanding the above content, the following will be specifically described.

[0075] Among them, the thermoelectric power generation module 110 can be regarded as a module unit that realizes power generation based on the temperature difference between two ends. For example, please refer to Figure 2 , Figure 2 The figure is a schematic structural diagram of a thermoelectric power generation module provided by an embodiment of the present application. Specifically, the thermoelectric power generation module 110 includes a cold-end radiator 111, a power generation chip 112, and a hot-end collector 113.

[0076] Specifically, the hot-end collector 113 is usually arranged on the exhaust pipe of the vehicle engine, and its high-temperature heat is usually provided by the high-temperature gas in the engine exhaust pipe. The cold-end radiator 111 is usually arranged in the condensate pipe of the motor cooling system, and its low-temperature environment is usually provided by the coolant flowing in the condensate pipe. The power generation chip 112 converts the temperature difference between the hot and cold ends into current through the Seebeck effect, and then after voltage boosting and bucking by the DC / DC converter, the electric energy is stored in the vehicle's battery module, such as the power battery. That is to say, the thermoelectric power generation module is usually also used to be connected to the vehicle's battery module to supply power to the vehicle battery module.

[0077] Specifically, in one embodiment, the power generation chip 112 can be a semiconductor power generation chip. Of course, it is feasible to use any other structure or style of power generation chip that can utilize the temperature difference between two ends to generate power. The embodiments of the present application do not limit this here.

[0078] Of course, the above-provided thermoelectric power generation module 110 is only a possible schematic structure. In fact, on the basis of the above thermoelectric power generation module 110, the thermoelectric power generation module 110 can be further configured with other components to further improve the power generation effect of the thermoelectric power generation module 110.

[0079] For example, in one embodiment, the cold-end radiator 111 may further be provided with a heat dissipation film. Specifically, the heat dissipation film provided on the cold-end radiator 111 can be used to further adjust the low-temperature environment where the cold-end radiator 111 is located. For example, the power of the fan paired with the heat dissipation film can be used to increase or decrease the heat dissipation effect of the cold-end radiator 111, thereby increasing or decreasing the cold-end temperature of the cold-end radiator 111, so as to increase or decrease the temperature difference on both sides of the thermoelectric generation module, enabling the thermoelectric generation module to provide a more effective power generation effect under different driving states.

[0080] Specifically, the heat dissipation film can be a graphene heat dissipation film. In addition to providing better thermal conductivity and stronger heat dissipation ability, it can also well withstand the vibration impact during vehicle driving.

[0081] Or, in another embodiment, considering that the power generation sheet 112 in the thermoelectric generation module 110 cannot exceed the maximum temperature that the material can withstand during use, otherwise it will cause damage to the power generation sheet. And the hot-end collector 113 of the thermoelectric generation module 110 is usually arranged in the exhaust pipe of the engine. Therefore, in one embodiment, a temperature sensor may further be provided on the hot-end collector 113 to monitor the exhaust temperature. Specifically, the temperature sensor can use a thermocouple. Of course, other temperature measurement modules that support high-temperature environments are also feasible, and the embodiments of the present application do not limit this here.

[0082] Of course, the above-provided solutions are only some feasible implementation solutions. In fact, adaptive improvements and adjustments made to the thermoelectric generation module 110 based on other actual needs are also feasible and will not affect the implementation of the technical solutions of the present application.

[0083] Based on the above-provided solutions, it can be understood that the hot end and the cold end of the thermoelectric generation module are respectively arranged at the exhaust pipe and the condensation pipe, and their hot-end temperature and cold-end temperature are respectively provided by the high-temperature gas in the exhaust pipe and the coolant in the condensation pipe. Therefore, by switching the switch to switch or adjust the connection state of the exhaust pipe or the condensation pipe, the effect of adaptively adjusting the hot-end temperature and the cold-end temperature of the thermoelectric generation module can be achieved, thereby realizing the scheme of adaptively adjusting the operating state of the thermoelectric generation module under different vehicle operating states to achieve the optimal power generation effect. The specific implementation solution will be described in combination with specific embodiments later.

[0084] Of course, it should be noted that the above Figure 1The waste heat recovery control system provided is only a simplified structural diagram and should not be understood as a complete waste heat recovery control system. In fact, during the waste heat recovery process, the waste heat recovery control system can usually also include other components, such as a cooling pump, a cooling pot, and in addition, based on the different types of vehicles, such as hybrid vehicles, the motor cooling system in the waste heat recovery control system can include the engine cooling system and the electric motor cooling system. Of course, the waste heat recovery control system can also usually be configured for heat interaction with other components, such as battery modules or air-conditioning modules. The structure of the above-mentioned complete waste heat recovery control system will be explained in conjunction with specific embodiments later.

[0085] For details, please refer to Figure 3a , Figure 3a Another waste heat recovery control system is provided in an embodiment of the present application. Specifically, in an embodiment of the present application, the switching switch 120 is configured as a first switching switch 122 on the first bypass passage 121 of the condenser of the motor cooling system. Specifically, the first switching switch 122 can be used to adjust the connectivity state of the first bypass passage 121, wherein the connectivity state here includes connectivity or non-connectivity, and of course can also include the opening degree when connected, so as to adjust the flow rate of the first bypass passage 121, such as changes in the coolant.

[0086] For details, please refer to Figure 3a The first bypass passage 121 is usually configured to connect the inlet side of the motor cooling system and the outlet side of the motor cooling system, so that when the first bypass passage 121 is in a connected state, the coolant in part of the condenser tube can be directly added to the condensation cycle without passing through the motor cooling system to exchange heat with the motor, thereby appropriately reducing the condensation temperature of the condenser tube, that is, the cold end temperature.

[0087] Specifically, that is, in the above-mentioned solution, according to the operating state of the vehicle, the operating state of the thermoelectric power generation module is switched by the switch, including:

[0088] When the vehicle is started at room temperature, or the condensing temperature of the condenser is higher than the required cold end temperature of the thermoelectric power generation module, the first bypass passage is controlled to be connected through the first switching switch to reduce the cold end temperature of the thermoelectric power generation module.

[0089] In an embodiment of the present application, when the vehicle is started at normal temperature, that is, in a scenario where other components in the vehicle do not need to be heated, the first bypass passage can be controlled to be connected through the first switching switch, so that the coolant in part of the condenser tube can be directly added to the subsequent condensation cycle without exchanging heat with the motor through the motor cooling system, thereby reducing the cold-end temperature of the thermoelectric generation module, and thus generating more electricity using the waste heat of the vehicle. Or, when the condensation temperature of the condenser tube is higher than the required cold-end temperature of the thermoelectric generation module, the first bypass passage can also be controlled to be connected through the first switching switch to reduce the cold-end temperature of the thermoelectric generation module, and thus generate more electricity using the waste heat of the vehicle.

[0090] Of course, in addition to the foregoing solutions provided, in another embodiment of the present application, the operation state of the thermoelectric generation module is switched through the switching switch according to the operation state of the vehicle, including:

[0091] When the condensation temperature of the condenser tube is less than or equal to the required cold-end temperature of the thermoelectric generation module, the first bypass passage is controlled to be closed through the first switching switch to increase the cold-end temperature of the thermoelectric generation module.

[0092] In an embodiment of the present application, when the condensation temperature of the condenser tube is less than or equal to the required cold-end temperature of the thermoelectric generation module, the first bypass passage can be controlled to be closed by controlling the first switching switch, so that the condensate in the condenser tube exchanges heat with the motor, thereby increasing the cold-end temperature of the thermoelectric generation module. Of course, it should be noted that although the above process will reduce the power generation effect of the thermoelectric generation module, in some special scenarios, the temperature of the condensate in the condenser tube can be used to heat other components of the vehicle. For example, in some embodiments of the present application, when the vehicle is cold-started, in order to improve the heating efficiency of the vehicle's air conditioner or ensure that the battery modules of the battery are in a better working environment, the first bypass passage is controlled to be closed by controlling the first switching switch, so that the condensate in the condenser tube exchanges heat with the motor, and at this time, the condensate after exchanging heat with the motor is also used to heat the battery module and / or the air conditioner module of the vehicle. Specifically, the coolant with a higher temperature flowing out of the motor cooling system flows through the power battery and the air conditioner heat exchange system that need to be heated respectively to exchange heat, quickly heating the temperatures of the battery and the air conditioner to the required working temperatures, keeping the power battery in the high-efficiency working temperature range while reducing the time required for air conditioner heating.

[0093] Of course, in addition to adjusting the operating state of the thermoelectric generation module, such as the cold-end temperature, by switching the first switching switch as provided above, the cold-end temperature of the thermoelectric generation module can also be adjusted by switching the opening degree of the first switching switch. That is to say, switching the operating state of the thermoelectric generation module by the switching switch includes:

[0094] Adjusting the opening degree of the first switching switch to adjust the cold-end temperature of the thermoelectric generation module.

[0095] Of course, the waste heat recovery control system provided in this application can also be further combined with components to further adjust the cold-end temperature of the thermoelectric generation module. For example, in combination with the heat dissipation film provided on the cold-end radiator as described above, such as adjusting the power of the cooling fan, the cold-end temperature can be adjusted. Or the cold-end temperature of the thermoelectric generation module can also be adjusted by adjusting the power of the cooling pump. The embodiments of this application do not limit this here.

[0096] In addition, in addition to the first switching component provided above, please refer to Figure 3b , Figure 3b which is another waste heat recovery control system provided in the embodiments of this application. Specifically, in the embodiments of this application, the switching switch 120 is configured as the second switching switch 124 of the second bypass passage 123 of the engine exhaust pipe. Specifically, the second switching switch 124 can be used to adjust the connection state of the second bypass passage 123, where the connection state here includes connected or disconnected, and of course can also include the opening degree when connected, so as to adjust the flow rate of the second bypass passage 123, such as the change in the high-temperature exhaust gas volume.

[0097] Specifically, please refer to Figure 3b , the second bypass passage 123 is usually configured to connect both sides of the thermoelectric generation module in the exhaust pipe. Thus, when the second bypass passage 123 is in a connected state, part of the high-temperature exhaust gas in the exhaust pipe can be directly discharged through the second bypass passage 123, thereby being able to reduce the exhaust gas temperature, that is, the hot-end temperature, at the thermoelectric generation module in the exhaust pipe.

[0098] Specifically, that is to say, in the above-provided solution, at this time, according to the operating state of the vehicle, switching the operating state of the thermoelectric generation module by the switching switch includes:

[0099] When the hot-end temperature of the thermoelectric generation module exceeds the preset temperature, controlling the second bypass passage to be connected by the second switching switch to reduce the hot-end temperature of the thermoelectric generation module.

[0100] In the embodiments of the present application, since the power generation chips in the thermoelectric power generation module need to be maintained at an appropriate operating temperature, therefore, when the hot-end temperature of the thermoelectric power generation module exceeds the preset temperature, it may affect the operation of the power generation chips, resulting in damage to the power generation chips. Therefore, in the embodiments of the present application, the second bypass path will be controlled to be connected by controlling the second switching switch, so that part of the high-temperature gas is discharged through the second bypass path, thereby effectively reducing the hot-end temperature of the thermoelectric power generation module. Of course, in the above process, if the vehicle is a hybrid vehicle, that is, when the driving force of the vehicle is provided by the engine and the generator, the engine condition of the vehicle can be further controlled to remain unchanged, that is, the exhaust temperature of the generator remains unchanged, and at the same time, the condition of the vehicle motor is adjusted to meet the driving requirements of the vehicle.

[0101] Of course, when the hot-end temperature of the thermoelectric power generation module does not exceed the preset temperature, the second bypass path can be controlled to be closed by the second switching switch, so as to appropriately increase the hot-end temperature of the thermoelectric power generation module, thereby increasing the temperature difference between both sides of the thermoelectric power generation module, and thus improving the power generation efficiency of the thermoelectric power generation module.

[0102] Specifically, for the convenience of understanding the above solution, please refer to Figure 4 , Figure 4 which is a complete structural schematic diagram of a waste heat recovery control system provided by the embodiments of the present application. Among them, the control logic of each component under different vehicle operating states will be specifically described below.

[0103] Among them, Figure 4 the descriptions of the relevant components shown in are as follows: cooling kettle 1, cooling pump 2, engine and its cooling system 3, motor and its cooling system 4, first switching switch 5 (two-way valve), second switching switch 6 (three-way valve), thermoelectric power generation module, controller, air-conditioning module 9, DC / DC module 10, battery module and its heat exchange system (power battery) 11, cooling fan 12, cold-end radiator, second bypass branch 14.

[0104] Specifically, when the vehicle is cold-started in a relatively low external environment, the air conditioner, battery, and engine all have heating requirements. At this time, the cooling pump can be controlled to operate at the minimum power, the fan can be turned off to reduce heat dissipation, and at the same time, the three-way valve and the two-way valve are closed. At this time, the gas-liquid flow of the overall system is as Figure 4As shown, a thermoelectric power generation module is controlled by the temperature difference formed by high-temperature exhaust gas and the low temperature of the cold-end radiator to generate electricity and store it in the battery module. The coolant with a relatively high temperature flowing out from the engine (i.e., the motor) cooling system flows through the air-conditioning module and the battery module that need to be heated in sequence for heat exchange, quickly heating the temperatures of the air-conditioning module and the battery module to the required operating temperatures. While keeping the battery module in the high-efficiency operating temperature range, the time required for heating the air-conditioning module is reduced. When the heating requirements of the air-conditioning module and the battery module decrease, for example, when the temperature of the coolant is greater than the required heat dissipation temperature, at this time, the cooling pump gear can be adjusted to accelerate the flow of the coolant, and at the same time, the power of the radiator fan can be adjusted to start the heat dissipation work, improving the cooling and heat dissipation capacity of the coolant to reduce the temperature of the coolant, that is, reducing the required cold-end temperature of the cold-end radiator.

[0105] Or, when the vehicle starts in a normal environment, such as a normal-temperature environment, or when the temperature of the coolant is greater than the cold-end required temperature of the thermoelectric power generation module, at this time, the temperature self-regulation of the thermoelectric power generation module is relatively poor. At this time, the first selection switch, that is, the two-way valve, can be controlled to open, and at the same time, the power of the cooling pump and the radiator fan can be adjusted to the maximum. At this time, the coolant in the overall system flows through the Figure 5a shown cooling flow path, that is, a part of the cooled coolant re-enters the cycle to quickly reduce the cold-end temperature in the waste heat recovery control system. On the one hand, it can improve the cooling efficiency of the air-conditioning module and the battery module, and on the other hand, it can also reduce the temperature of the cold-end radiator of the thermoelectric power generation module, maintaining the temperature difference at both ends of the thermoelectric power generation module, thereby improving the power generation effect of the thermoelectric power generation module.

[0106] In addition, considering that the power generation power of the thermoelectric power generation module is usually related to the temperature difference between the cold end and the hot end. Specifically, when the hot-end temperature reaches the power generation requirement temperature of the power generation chip, how to control the size of the cold-end temperature is of great significance for improving the power generation power. Since the power generation chips in the thermoelectric power generation module cannot exceed the maximum temperature that the material can withstand during use, otherwise it will cause damage to the power generation chips. Therefore, to prevent the power generation chips of the thermoelectric power generation module from being damaged and failing due to excessive exhaust temperature, a thermocouple can be used to stick to the surface of the hot-end collector of the thermoelectric power generation module to real-time monitor the surface temperature of the hot-end collector in contact with the power generation chips. When the thermocouple detects that the surface temperature of the hot-end collector is greater than the protection temperature of the power generation chips, at this time, after the controller receives this signal, it will control the second selection switch, that is, the three-way valve, to open the second bypass path, and at the same time, close the air flow pipeline flowing through the thermoelectric power generation module. At this time, the air flow channel in the overall system is as Figure 5bAs shown, it can prevent the hot end of the thermoelectric power generation module from continuously heating up and causing damage to the thermoelectric power generation module. At the same time, it can also send out a driving signal to keep the engine running under the current working condition, maintain the exhaust gas temperature, that is, keep the hot end temperature from rising further, and the remaining driving demand is provided by the motor. When the thermocouple detects that the temperature of the hot end collector is lower than the protection temperature of the power generation chip, the second selection switch can be controlled to close the bypass pipe at this time. At this time, the exhaust gas flow pipeline flowing through the thermoelectric power generation module is reopened, and the thermoelectric power generation module can continue to generate electricity through the temperature difference on both sides.

[0107] In addition, since the cold end temperature also affects the power generation efficiency. In order to further improve the control of the cold end temperature, a graphene heat dissipation film is also used and arranged on the cold end radiator. Due to the good thermal conductivity, strong heat dissipation ability and high mechanical strength of graphene, it can well withstand the vibration influence and has a good effect on improving the cooling effect of the system. In addition, when controlling the cold end temperature of the thermoelectric power generation module, on the one hand, the heat dissipation effect of the cold end radiator can be adjusted by controlling the fan, so as to adjust the cold end temperature. On the other hand, the coolant temperature can be reduced by adjusting the power of the cooling pump, so as to adjust the cold end temperature. On the other hand, the opening and closing of the first selection switch can also be adjusted to stabilize the cold end temperature, realizing the temperature self-regulation of the exhaust gas waste heat recovery system.

[0108] Of course, through the waste heat recovery control system provided above, the control of the thermoelectric power generation module can be realized, so that the operating state of the thermoelectric power generation module can be reasonably adjusted based on different operating states of the vehicle, that is, by adjusting the cold end temperature and / or the hot end temperature of the thermoelectric power generation module to adjust the power generation power of the thermoelectric power generation module. Specifically, in another embodiment, during the process of adjusting the cold end temperature and / or the hot end temperature of the thermoelectric power generation module to adjust the power generation power of the thermoelectric power generation module, it can also be to control the thermoelectric power generation module to generate electricity at the maximum power generation power.

[0109] It should be noted that since the cold end and hot end temperatures of the thermoelectric power generation module are in dynamic change with different driving conditions, it is often difficult to meet the maximum power output control for the power generation chip to work and generate electricity in the thermoelectric power generation module by controlling the regulating system temperature. Therefore, based on the waste heat recovery control system provided in this application, this application also provides a waste heat recovery control method to control the thermoelectric power generation module to generate electricity at the maximum power generation power. At this time, the maximum power generation power is determined based on the change rate of the output power after the output voltage of the thermoelectric power generation module is transformed. The specific waste heat recovery control method will be specifically described in the subsequent embodiments.

[0110] In the embodiments of the present application, by adjusting a switching switch according to the operating state of the vehicle to switch the operating state of the thermoelectric power generation module, the thermoelectric power generation module can generate electricity to adapt to the change of the vehicle operating state, thereby ensuring the waste heat recovery effect of the vehicle.

[0111] In order to better implement the waste heat recovery control of the waste heat recovery control system in the embodiments of the present application, the present application also provides a waste heat recovery control method, which is applied to a waste heat recovery control system. The system includes a thermoelectric power generation module, a switching switch, and a controller. One end of the thermoelectric power generation module is connected to the exhaust pipe of the vehicle engine, and the other end is connected to the condensation pipe of the motor cooling system; the switching switch is used to switch the connection state of the exhaust pipe and / or the condensation pipe. Specifically, please refer to Figure 6 , Figure 6 which is a schematic flowchart of the steps of a waste heat recovery control method provided by the embodiments of the present application. Specifically, it includes step S610:

[0112] S610, according to the operating state of the vehicle, switch the switching switch through the controller to switch the operating state of the thermoelectric power generation module.

[0113] In the embodiments of the present application, the relevant implementation solutions for switching the switching switch according to the operating state of the vehicle to switch the operating state of the thermoelectric power generation module can refer to the relevant embodiments of the foregoing waste heat recovery control system.

[0114] For example, in one embodiment, when the switching switch includes a first switching switch on the first bypass path of the condensation pipe of the motor cooling system for adjusting the connection state of the first bypass path, at this time, step S610 includes:

[0115] According to the operating state of the vehicle, switch the switching switch through the controller to switch the operating state of the thermoelectric power generation module. When the vehicle starts at normal temperature or the condensation temperature of the condensation pipe is higher than the required cold end temperature of the thermoelectric power generation module, the first switching switch can be switched through the controller to connect the first bypass path, thereby reducing the cold end temperature of the thermoelectric power generation module.

[0116] Or, in one embodiment, step S610 further includes:

[0117] When the condensation temperature of the condensation pipe is less than or equal to the required cold end temperature of the thermoelectric power generation module, control the first bypass path to be closed through the first switching switch to increase the cold end temperature of the thermoelectric power generation module.

[0118] Or, in one embodiment, step S610 further includes:

[0119] Control the first bypass path to close through the first switching switch, so that after the condensate in the condenser tube exchanges heat with the motor, the cold-end temperature of the thermoelectric generation module is increased.

[0120] In addition, when the switching switch includes a second switching switch for a second bypass path of the exhaust pipe of the vehicle engine to adjust the connection state of the second bypass path, the step S610 further includes:

[0121] In the case where the hot-end temperature of the thermoelectric generation module exceeds a preset temperature, control the second bypass path to be connected through the second switching switch to reduce the hot-end temperature of the thermoelectric generation module.

[0122] Or, in one embodiment, the step S610 further includes:

[0123] Control to keep the operating condition of the engine of the vehicle unchanged, and adjust the operating condition of the motor of the vehicle.

[0124] Or, in one embodiment, the step S610 further includes:

[0125] In the case where the hot-end temperature of the thermoelectric generation module does not exceed the preset temperature, control the second bypass path to close through the second switching switch to increase the hot-end temperature of the thermoelectric generation module.

[0126] Of course, for the specific description of the above embodiments, reference can be made to the relevant embodiments of the aforementioned waste heat recovery control system, and the embodiments of the present application will not be repeated here.

[0127] That is to say, in the above embodiments, switching the operating state of the thermoelectric generation module is achieved by adjusting the cold-end temperature and / or the hot-end temperature of the thermoelectric generation module. That is to say, the switching of the operating state of the thermoelectric generation module includes:

[0128] Adjust the cold-end temperature and / or the hot-end temperature of the thermoelectric generation module to adjust the power generation power of the thermoelectric generation module.

[0129] Of course, when the temperatures on both sides of the thermoelectric generation module change, the power output by the thermoelectric generation module often corresponds to an adjustment. At this time, when adjusting the power generation power of the thermoelectric generation module, the thermoelectric generation module should be controlled to generate electricity at the maximum power generation power.

[0130] As can be seen from the foregoing related descriptions, since the temperatures of the cold end and the hot end of the thermoelectric power generation module vary dynamically with different driving conditions, it is often difficult to control the temperature of the regulation system to meet the control of the maximum power output during the power generation of the power generation chips in the thermoelectric power generation module. Therefore, in the embodiments of the present application, a specific implementation solution for adjusting the thermoelectric power generation module to output power at the maximum power under different working conditions is further provided. Specifically, it controls the thermoelectric power generation module to generate electricity at the maximum power generation power through the change rate of the output power after the output voltage of the thermoelectric power generation module is transformed. That is to say, the method further includes:

[0131] Controlling the thermoelectric power generation module to generate electricity at the maximum power generation power based on the change rate of the output power after the output voltage of the thermoelectric power generation module is transformed.

[0132] Specifically, please refer to Figure 7 , Figure 7 which is a schematic diagram of the step process for adjusting the output voltage of the thermoelectric power generation module in the embodiments of the present application to make it work at the maximum power generation power. Specifically, since there are problems such as oscillation and misjudgment in the MPPT (Maximum Power Point Tracking) perturbation observation algorithm in the related art, it is difficult to select the optimal interval perturbation step size, so the tracking speed and accuracy are poor, resulting in the inability to track the maximum power generation. Therefore, in the embodiments of the present application, the maximum power point tracking algorithm is further improved by combining the hysteresis control algorithm to improve the stability and accuracy of the system and achieve the optimal tracking of the maximum power point. Among them, in the initial stage, a perturbation amount of the input voltage is given at regular intervals through closed-loop control. After quickly adjusting the system to near the maximum power point, the confirmation of the maximum power generation is realized based on the following steps S710~S730, specifically as follows:

[0133] S710, applying a positive perturbation voltage at the initial output voltage, and determining a first perturbation power based on the first perturbation current of the applied positive perturbation voltage.

[0134] In the embodiments of the present application, first, the relevant background for determining the maximum power generation is described. Among them, after collecting relevant parameters in the output circuit of the thermoelectric power generation module, such as the actual voltage value and the actual current value , the actual transmission power of the circuit can be calculated by multiplying the two. At this time, the load resistance can be calculated according to the following formula:

[0135]

[0136] Among them, is the internal resistance of the thermoelectric power generation module. It can be understood that when The power generation at this time is the maximum, and the maximum power generation at this time is:

[0137]

[0138] In order to track and control the thermoelectric power generation module so that the thermoelectric power generation module generates electricity at the maximum power generation, a disturbance amount of the input voltage can be given at intervals through closed-loop control in the initial stage, and the system can be quickly adjusted to near the maximum power point. At this time, the collected output voltage can be understood as the initial output voltage. , combined with the corresponding initial current The initial output voltage can be calculated. The corresponding initial power . That is to say, in one embodiment, the method further includes:

[0139] Adjust the output voltage of the thermoelectric power generation module to the initial output voltage through closed-loop control.

[0140] In order to realize the tracking control of the maximum power generation, after determining the initial output voltage, the subsequent execution process will be carried out with a hysteresis control algorithm.

[0141] Specifically, above the initial output voltage , a positive disturbance amount △U can be applied to the output voltage of the system, and the output voltage after disturbance is collected and current , that is, the first disturbance current, and the power after disturbance is calculated, that is, the first disturbance power , where .

[0142] S720, Apply a negative disturbance voltage at the initial output voltage, and determine the second disturbance power based on the second disturbance current of the applied negative disturbance voltage.

[0143] On the basis of the above, a negative disturbance voltage can be further applied at the initial output voltage, and the output voltage after disturbance is collected and current , that is, the second disturbance current, and the power after disturbance is calculated, that is, the second disturbance power . Among them, applying a negative disturbance voltage at the initial output voltage can be regarded as further applying twice the negative disturbance voltage after the above step of applying a positive disturbance voltage, that is, .

[0144] S730, Update the output voltage of the thermoelectric power generation module based on the first disturbance power and the second disturbance power to control the thermoelectric power generation module to generate electricity at the maximum power.

[0145] After obtaining the disturbance powers of applying the positive disturbance voltage and the negative disturbance voltage through the foregoing provided solution, based on the first disturbance power and the second disturbance power, the influences of applying the positive disturbance voltage and the negative disturbance voltage on the power generation power of the thermoelectric generation module can be determined, so as to confirm the maximum power generation power by updating the output voltage. Specifically, updating the output voltage of the thermoelectric generation module based on the first disturbance power and the second disturbance power to determine the maximum power generation power of the thermoelectric generation module can generally be achieved based on the numerical magnitude relationship among the first disturbance power, the second disturbance power, and the initial power corresponding to the initial output voltage. That is to say, updating the output voltage of the thermoelectric generation module based on the first disturbance power and the second disturbance power to control the thermoelectric generation module to generate electricity at the maximum power generation power includes:

[0146] Updating the output voltage of the thermoelectric generation module based on the numerical magnitude relationship among the first disturbance power, the second disturbance power, and the initial power corresponding to the initial output voltage to control the thermoelectric generation module to generate electricity at the maximum power generation power.

[0147] Among them, the specific implementation solution is as follows:

[0148] Compare the power after applying the negative disturbance change, that is, the second disturbance power with the initial power . If , then output the symbol parameter , otherwise output . Then compare the power after applying the positive disturbance change, that is, the first disturbance power with the initial power . If , then output the symbol parameter , otherwise output ; Sum the symbol parameters and to obtain , and based on as the judgment criterion, if ε = 2, then let , that is, move the maximum power point towards the C side. If ε = -2, let , that is, move the maximum power point towards the B side. If ε = 0, it is considered that the maximum power point has been found, and at this time, the working voltage can continue to be kept unchanged.

[0149] At this time, the specific control logic for the power generation power of the thermoelectric generation module can refer to the foregoing Figure 8 , among which, Figure 8 The symbols shown can elaborate the descriptions provided in the foregoing embodiments.

[0150] In an embodiment of the present application, the switching switch is adjusted according to the operating state of the vehicle to switch the operating state of the thermoelectric generation module, so that the thermoelectric generation module can generate electricity according to the change of the vehicle operating state, thereby ensuring the waste heat recovery effect of the vehicle.

[0151] An embodiment of the present application further provides a controller, as Figure 9 shown, which shows a schematic structural diagram of the controller involved in the embodiment of the present application. Specifically:

[0152] The controller may include a processor 301 with one or more processing cores, a memory 302 with one or more storage media, a power supply 303, an input unit 304 and other components. Those skilled in the art can understand that Figure 9 the controller structure shown in

[0153] does not limit the controller, and may include more or fewer components than shown in the figure, or combine certain components, or arrange different components. Among them:

[0154] The processor 301 is the control center of the controller, connecting various parts of the entire controller through various interfaces and lines, and executing various functions of the controller and processing data by running or executing computer programs and / or modules stored in the memory 302, and calling data stored in the memory 302. Optionally, the processor 301 may include one or more processing cores; preferably, the processor 301 may integrate an application processor and a modulation / demodulation processor, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modulation / demodulation processor mainly processes wireless communication. It can be understood that the above modulation / demodulation processor may not be integrated into the processor 301.

[0155] The controller further includes a power supply 303 for powering each component. Preferably, the power supply 303 can be logically connected to the processor 301 through a power management system, so as to manage functions such as charging, discharging, and power consumption management through the power management system. The power supply 303 can also include any components such as one or more DC or AC power supplies, a recharge system, a power failure detection circuit, a power converter or inverter, and a power status indicator.

[0156] The controller may further include an input unit 304, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.

[0157] Although not shown, the controller may further include a display unit, etc., which will not be elaborated here. Specifically, in this embodiment, the processor 301 in the controller will load the executable files corresponding to the processes of one or more computer programs into the memory 302 according to the following instructions, and the processor 301 will run the computer programs stored in the memory 302 to implement various functions.

[0158] For the specific implementation manners of the above operations and the corresponding beneficial effects, reference can be made to the detailed description of the anomaly detection method above, which will not be elaborated here.

[0159] Those of ordinary skill in the art can understand that all or part of the steps in the above methods of the embodiments can be completed by a computer program, or by controlling relevant hardware through a computer program. The computer program can be stored in a storage medium and loaded and executed by a processor.

[0160] Therefore, an embodiment of the present application provides a storage medium, in which a computer program is stored, and the computer program can be loaded by a processor to execute the steps of any waste heat recovery control method provided by the embodiments of the present application.

[0161] For the specific implementation manners of the above operations and the corresponding beneficial effects, reference can be made to the previous embodiments, which will not be elaborated here.

[0162] Among them, the storage medium may include: Read Only Memory (ROM), Random Access Memory (RAM), a magnetic disk or an optical disc, etc.

[0163] Since the computer program stored in the storage medium can execute the steps in any of the waste heat recovery control methods provided in the embodiments of the present application, the beneficial effects achievable by any of the waste heat recovery control methods provided in the embodiments of the present application can be realized. For details, refer to the previous embodiments and will not be elaborated herein.

[0164] Wherein, according to one aspect of the present application, there is provided a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a storage medium. A processor of a computer device reads the computer instructions from the storage medium, and the processor executes the computer instructions, so that the computer device executes the above waste heat recovery control method.

[0165] The embodiments of the present application further provide a vehicle, including the waste heat recovery control system provided in any of the foregoing embodiments, or including the controller provided in any of the foregoing embodiments, or executing the steps of the waste heat recovery control method provided in any of the foregoing embodiments.

[0166] The above has introduced in detail a waste heat recovery control system, method, controller, medium, product and vehicle provided in the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, based on the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A waste heat recovery control system, characterized in that, It includes a thermoelectric power generation module, a switching switch, and a controller. One end of the thermoelectric power generation module is connected to the exhaust pipe of the vehicle engine, and the other end is connected to the condensate pipe of the motor cooling system; the switching switch is used to switch the connection state of the exhaust pipe and / or the condensate pipe; The controller is used to switch the operating state of the thermoelectric power generation module through the switching switch according to the operating state of the vehicle; The switching switch includes a first switching switch on the first bypass path of the condensate pipe of the motor cooling system. The first switching switch is used to adjust the connection state of the first bypass path; the first bypass path is used to connect the inlet side and the outlet side of the motor cooling system; the coolant flowing through the first bypass path does not exchange heat with the motor through the motor cooling system to reduce the cold-end temperature of the thermoelectric power generation module.

2. The system according to claim 1, wherein The thermoelectric power generation module includes a cold-end radiator, a power generation chip, and a hot-end collector. The hot-end collector is arranged on the exhaust pipe, and the cold-end radiator is arranged on the condensate pipe; The power generation chip generates electricity through the temperature difference between the cold-end radiator and the hot-end collector.

3. The system according to claim 2, wherein The cold-end radiator is also provided with a heat dissipation film, and / or the hot-end collector is also provided with a temperature sensor.

4. The system according to claim 1, wherein The switching the operating state of the thermoelectric power generation module through the switching switch according to the operating state of the vehicle includes: When the vehicle is started at normal temperature, or when the condensation temperature of the condensate pipe is higher than the required cold-end temperature of the thermoelectric power generation module, the first bypass path is controlled to be connected through the first switching switch to reduce the cold-end temperature of the thermoelectric power generation module.

5. The system according to claim 1, wherein The switching the operating state of the thermoelectric power generation module through the switching switch according to the operating state of the vehicle includes: When the condensation temperature of the condensate pipe is less than or equal to the required cold-end temperature of the thermoelectric power generation module, the first bypass path is controlled to be closed through the first switching switch to increase the cold-end temperature of the thermoelectric power generation module.

6. The system according to claim 5, characterized in that, The increasing the cold-end temperature of the thermoelectric power generation module by controlling the first bypass path to be closed through the first switching switch includes: Controlling the first bypass path to be closed through the first switching switch so that the condensate in the condensate pipe exchanges heat through the motor and then increases the cold-end temperature of the thermoelectric power generation module.

7. The system according to claim 6, wherein When the vehicle is cold-started, the condensate after exchanging heat through the motor is also used to heat the battery module and / or the air-conditioning module of the vehicle.

8. The system according to claim 1, wherein The switching the operating state of the thermoelectric power generation module through the switching switch includes: Adjusting the opening degree of the first switching switch to adjust the cold-end temperature of the thermoelectric power generation module.

9. The system according to claim 1, wherein The switching switch includes a second switching switch on the second bypass path of the exhaust pipe of the vehicle engine. The second switching switch is used to adjust the connection state of the second bypass path.

10. The system according to claim 9, wherein The switching the operating state of the thermoelectric power generation module through the switching switch according to the operating state of the vehicle includes: When the hot-end temperature of the thermoelectric power generation module exceeds the preset temperature, the second bypass path is controlled to be connected through the second switching switch to reduce the hot-end temperature of the thermoelectric power generation module.

11. The system according to claim 10, wherein The controller is further configured to: control to keep the operating condition of the vehicle engine unchanged, and adjust the operating condition of the vehicle motor.

12. The system according to claim 9, wherein The switching of the operating state of the thermoelectric power generation module according to the operating state of the vehicle by the switching switch includes: When the hot-end temperature of the thermoelectric power generation module does not exceed the preset temperature, the second bypass path is controlled to be closed through the second switching switch to increase the hot-end temperature of the thermoelectric power generation module.

13. The system according to claim 9, wherein The second bypass path is used to connect the two sides of the thermoelectric power generation module in the exhaust pipe.

14. The system according to any one of claims 1 to 13, characterized in that, The controller is further configured to adjust the cold-end temperature and / or the hot-end temperature of the thermoelectric power generation module to adjust the power generation power of the thermoelectric power generation module.

15. The system according to claim 14, characterized in that, The controller is further configured to control the thermoelectric power generation module to generate electricity at the maximum power generation power.

16. The system according to claim 15, characterized in that, The maximum power generation power is determined based on the change rate of the output power after transformation of the output voltage of the thermoelectric power generation module.

17. The system according to any one of claims 1 to 13, characterized in that, The thermoelectric power generation module is further used to be connected to the battery module of the vehicle to supply power to the battery module.

18. A waste heat recovery control method, characterized in that, Applied to a waste heat recovery control system, the system includes a thermoelectric power generation module, a switching switch, and a controller. One end of the thermoelectric power generation module is connected to the exhaust pipe of the vehicle engine, and the other end is connected to the condensate pipe of the motor cooling system; the switching switch is used to switch the connection state of the exhaust pipe and / or the condensate pipe; the switching switch includes a first switching switch on a first bypass path of the condensate pipe of the motor cooling system, and the first switching switch is used to adjust the connection state of the first bypass path; The first bypass path is used to connect the inlet side of the motor cooling system and the outlet side of the motor cooling system; the coolant flowing through the first bypass path does not exchange heat with the motor through the motor cooling system to reduce the cold-end temperature of the thermoelectric power generation module; The method includes: According to the operating state of the vehicle, the switching switch is switched by the controller to switch the operating state of the thermoelectric power generation module.

19. The method according to claim 18, wherein The switching of the operating state of the thermoelectric power generation module includes: Adjust the cold-end temperature and / or the hot-end temperature of the thermoelectric power generation module to adjust the power generation power of the thermoelectric power generation module.

20. The method according to claim 19, wherein The adjustment of the power generation power of the thermoelectric power generation module includes: Control the thermoelectric power generation module to generate electricity at the maximum power generation power.

21. The method according to claim 20, characterized in that, The method further includes: Based on the change rate of the output power after transformation of the output voltage of the thermoelectric power generation module, control the thermoelectric power generation module to generate electricity at the maximum power generation power.

22. The method according to claim 21, wherein The method includes: Apply a positive perturbation voltage at the initial output voltage, and determine a first perturbation power based on the first perturbation current of the applied positive perturbation voltage; Apply a negative perturbation voltage at the initial output voltage, and determine a second perturbation power based on the second perturbation current of the applied negative perturbation voltage; Update the output voltage of the thermoelectric power generation module based on the first perturbation power and the second perturbation power, so as to control the thermoelectric power generation module to generate electricity at the maximum power generation efficiency.

23. The method according to claim 22, wherein The step of updating the output voltage of the thermoelectric power generation module based on the first perturbation power and the second perturbation power to control the thermoelectric power generation module to generate electricity at the maximum power generation efficiency includes: Update the output voltage of the thermoelectric power generation module based on the numerical magnitude relationship among the first perturbation power, the second perturbation power, and the initial power corresponding to the initial output voltage, so as to control the thermoelectric power generation module to generate electricity at the maximum power generation efficiency.

24. The method according to claim 22, wherein The method further includes: Adjust the output voltage of the thermoelectric power generation module to the initial output voltage through closed-loop control.

25. A controller, characterized in that, Comprising one or more processors and a memory, the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the waste heat recovery control method according to any one of claims 18 to 24.

26. A storage medium, characterized in that, Comprising a computer program, when the computer program runs on a controller, the computer program is used to cause the controller to execute the steps of the waste heat recovery control method according to any one of claims 18 to 24.

27. A computer program product, characterized in that, Comprising a computer program or instruction, when the computer program or instruction is executed by a processor, the steps of the waste heat recovery control method according to any one of claims 18 to 24 are implemented.

28. A vehicle, characterized in that, The vehicle includes the waste heat recovery control system according to any one of claims 1 to 17, or is used to execute the steps of the waste heat recovery control method according to any one of claims 18 to 24, or includes the controller according to claim 25.

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