A heat management control system and control method for a new energy vehicle

Abstract

The application discloses a heat management control system and control method for a new energy vehicle, and belongs to the technical field of new energy vehicles. The method comprises the following steps: if the vehicle is in a parking state, a heating request instruction is input to a vehicle controller through a vehicle communication module (T-BOX) or an instrument module; a heat management controller feeds back information about whether the battery needs heating to the vehicle controller; the vehicle controller judges whether the vehicle meets the first condition, the second condition and the third condition at the same time; if yes, a motor controller (MCU) controls the motor to enter a locked-rotor state. If the vehicle is in a driving state, the motor controller (MCU) judges whether the motor electric power can only meet the driving demand; if no, the vehicle controller judges whether the vehicle meets the fourth condition and the fifth condition at the same time; if yes, the heat generated by the low-power working point of the motor is used to heat the air conditioning system and the battery. That is, the application can provide heat for the air conditioning system and the battery of the new energy vehicle through the cooperation of the motor and the PTC.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology. Specifically, this invention relates to a heat management control system and control method for new energy vehicles. Background Technology

[0002] With the development of the automotive industry, new energy vehicles have seen significant growth, and private cars are now widely used in ordinary households, with electric vehicles gradually becoming more common. Currently, most electric vehicles utilize PTC heating technology, which heats the battery's water circuit and consequently the battery itself.

[0003] Patent CN108172938B discloses a power battery thermal management system, including a signal detection module, a central control module, and an execution module. The central control module receives detection signals sent by the signal detection module, generates execution instructions based on the detection signals, and sends the execution instructions to the execution module to control the working state of the execution module; the execution module includes at least one set of thermoelectric cooling components.

[0004] However, the technology disclosed in the aforementioned patent cannot provide heat to the air conditioning system and battery of new energy vehicles through the coordinated use of motor and PTC. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a heat management control system and control method for new energy vehicles, in order to achieve the purpose of providing heat to the air conditioning system and battery of new energy vehicles through the coordinated operation of motor and PTC.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] This invention provides a thermal management control system for new energy vehicles, including an on-board communication module (T-BOX), an instrument module, a thermal management controller, a motor controller (MCU), and a vehicle controller. The on-board communication module (T-BOX) is connected to the vehicle controller; the instrument module is connected to the vehicle controller; the thermal management controller is connected to the vehicle controller; and the motor controller (MCU) is connected to the vehicle controller.

[0008] Furthermore, the vehicle controller determines whether the vehicle is in a parked or driving state.

[0009] Furthermore, when the vehicle controller determines that the vehicle is in a parked state, it inputs a heating request command to the vehicle controller through the on-board communication module (T-BOX) or the instrument module; the thermal management controller feeds back information on whether the battery needs heating to the vehicle controller.

[0010] Furthermore, the vehicle controller determines whether the vehicle simultaneously meets the first, second, and third conditions; when the vehicle controller determines that the vehicle simultaneously meets the first, second, and third conditions, the motor controller (MCU) controls the motor to enter a stall state.

[0011] Furthermore, the first condition is that the vehicle is not ready; the second condition is that the vehicle is in park; and the third condition is that the vehicle is connected to high voltage and the high voltage is fault-free.

[0012] Furthermore, when the vehicle controller determines that the vehicle is in a driving state, the motor controller (MCU) determines whether the motor power can only meet the driving requirements. If the motor controller (MCU) determines that the motor power can not only meet the driving requirements, the vehicle controller determines whether the vehicle simultaneously meets the fourth and fifth conditions.

[0013] Furthermore, when the vehicle controller determines that the vehicle simultaneously meets the fourth and fifth conditions, it uses the heat generated by the low-power operating point of the motor to heat the air conditioning system and the battery.

[0014] Furthermore, the fourth condition is that the vehicle is ready; the fifth condition is that the motor speed is not less than the preset speed.

[0015] Furthermore, the preset speed is 50 revolutions per minute.

[0016] This invention also provides a heat management and control method for new energy vehicles, the method comprising the following steps:

[0017] S1: The vehicle controller determines the vehicle status. If the vehicle controller determines that the vehicle is in a parked state, it proceeds to S2. If the vehicle controller determines that the vehicle is in a driving state, it proceeds to S6.

[0018] S2: Input heating request commands to the vehicle controller via the vehicle communication module (T-BOX) or instrument module;

[0019] S3: The thermal management controller sends information to the vehicle controller about whether the battery needs heating.

[0020] S4: The vehicle controller determines whether the vehicle simultaneously meets the first, second, and third conditions; if yes, proceed to S5; otherwise, proceed to S9.

[0021] S5: The motor controller (MCU) controls the motor to enter a stall state; then proceed to S9;

[0022] S6: The motor controller (MCU) determines whether the motor power can only meet the drive requirements. If not, proceed to S7; if yes, proceed to S9.

[0023] S7: The vehicle controller determines whether the vehicle simultaneously meets the fourth and fifth conditions. If yes, proceed to S8; otherwise, proceed to S9.

[0024] S8: The heat generated by the low-power operating point of the motor is used to heat the air conditioning system and the battery;

[0025] S9: End.

[0026] The heat management control system and control method of the present invention have the following advantages:

[0027] (1) The heat management control system and control method of the present invention can provide heat to the air conditioning system and battery of new energy vehicles through the coordinated operation of motor and PTC.

[0028] (2) The heat management control system and control method of the present invention can reduce the power of PTC or reduce the utilization of PTC, thereby effectively reducing costs.

[0029] (3) The heat management control system and control method of the present invention can effectively improve heat energy conversion.

[0030] (4) The heat management control system and control method of the present invention cover the vehicle driving conditions to the greatest extent. Attached Figure Description

[0031] This manual includes the following figures, which illustrate the following:

[0032] Figure 1 This is a logical structure block diagram of a heat management control system for a new energy vehicle according to the present invention;

[0033] Figure 2 This is a flowchart of a heat management and control method for a new energy vehicle according to the present invention.

[0034] Explanation of reference numerals in the attached diagram: 1. Vehicle communication module (T-BOX); 2. Instrument module; 3. Thermal management controller; 4. Motor controller (MCU); 5. Vehicle controller. Detailed Implementation

[0035] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0036] Figure 1This is a logical structure block diagram of a thermal management control system for a new energy vehicle according to the present invention, including an on-board communication module (T-BOX) 1, an instrument module 2, a thermal management controller 3, a motor controller (MCU) 4, and a vehicle controller 5. The on-board communication module (T-BOX) 1 is connected to the vehicle controller 5; the instrument module 2 is connected to the vehicle controller 5; the thermal management controller 3 is connected to the vehicle controller 5; and the motor controller (MCU) 4 is connected to the vehicle controller 5.

[0037] Among them, the vehicle controller 5 determines whether the vehicle is in a parked or driving state.

[0038] When the vehicle controller 5 determines that the vehicle is in a parked state, it inputs a heating request command to the vehicle controller 5 through the vehicle communication module (T-BOX) 1 or the instrument module 2. At the same time, the thermal management controller 3 feeds back information on whether the battery needs heating to the vehicle controller 5. The vehicle controller 5 determines whether the vehicle meets the first, second and third conditions at the same time. If the vehicle controller 5 determines that the vehicle meets the first, second and third conditions at the same time, the motor controller (MCU) 4 controls the motor to enter the stall state. Specifically, when the vehicle is parked, if the driver needs cabin heating or battery heating, the driver can activate the cabin heating or battery heating via the terminal APP or the function menu in the instrument module 2. After activating the cabin heating or battery heating via the terminal APP or the function menu in the instrument module 2, the vehicle communication module (T-BOX) 1 or the instrument module 2 inputs a request command for cabin heating or battery heating to the vehicle controller 5. If the vehicle controller 5 receives a request command for cabin heating from the vehicle communication module (T-BOX) 1 or the instrument module 2, the vehicle controller 5 will determine whether the vehicle simultaneously meets the first, second, and third conditions. If the vehicle controller 5 receives a request command for battery heating from the vehicle communication module (T-BOX) 1 or the instrument module 2... If the thermal management controller 3 sends a battery heating request to the vehicle controller 5, and the thermal management controller 3 sends a feedback message to the vehicle controller 5 indicating that the battery requires heating, then the vehicle controller 5 will determine whether the vehicle simultaneously meets the first, second, and third conditions. If the vehicle controller 5 receives a battery heating request from the onboard communication module (T-BOX) 1 or the instrument module 2, and the thermal management controller 3 sends a feedback message to the vehicle controller 5 indicating that the battery does not require heating, then the vehicle controller 5 will not determine whether the vehicle simultaneously meets the first, second, and third conditions. If the vehicle controller 5 receives both cabin heating and battery heating request messages from the onboard communication module (T-BOX) 1 or the instrument module 2, then the vehicle controller 5 will determine whether the vehicle simultaneously meets the first, second, and third conditions. When the vehicle controller 5 determines that the vehicle simultaneously meets the first, second, and third conditions, then the vehicle controller 5 controls the motor controller (MCU) 4 to put the motor into a stall state.Specifically, if the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, it provides heat to the air conditioning system through the stalled motor, thereby achieving cabin heating. When the heat provided by the stalled motor to the air conditioning system is insufficient, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system, meaning that the motor and PTC can work together to provide heat to the air conditioning system of the new energy vehicle. If the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the information fed back to the vehicle controller 5 by the thermal management controller 3 indicates that the battery needs heating, it provides heat to the battery through the stalled motor, thereby achieving cabin heating. This system enables battery heating. When the motor's stall condition provides insufficient heat to the battery, the thermal management controller 3 controls the PTC to provide heat to the battery. In other words, the motor and PTC work together to provide heat to the battery of the new energy vehicle. If the vehicle controller 5 receives a request for cabin heating and battery heating from the vehicle communication module (T-BOX) 1 or the instrument module 2, the motor's stall condition provides heat to the air conditioning system and battery, thus enabling cabin heating and battery heating. Again, when the motor's stall condition provides insufficient heat to the air conditioning system and battery, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system and battery. This allows for the motor and PTC to work together to provide heat to the air conditioning system and battery of the new energy vehicle. This reduces the PTC's power consumption or utilization, effectively lowering costs and improving heat conversion. Furthermore, the thermal management control system and method of this invention cover the vehicle's operating conditions to the greatest extent possible.

[0039] The first condition is that the vehicle is not ready; the second condition is that the vehicle is in park; and the third condition is that the vehicle is connected to high voltage and the high voltage is fault-free.

[0040] When the vehicle controller 5 determines that the vehicle is in driving mode, the motor controller (MCU) 4 determines whether the motor power can only meet the driving requirements. If the motor controller (MCU) 4 determines that the motor power can not only meet the driving requirements, the vehicle controller 5 determines whether the vehicle meets both the fourth and fifth conditions at the same time. When the vehicle controller 5 determines that the vehicle meets both the fourth and fifth conditions at the same time, the heat generated by the low power operating point of the motor is used to heat the air conditioning system and the battery. Specifically, in driving mode, when the motor controller (MCU) 4 determines that the motor power is not sufficient to meet the driving requirements, and the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth and fifth conditions, then the heat generated by the low-power operating point of the motor is used to heat the air conditioning system, thereby achieving cabin heating. When the heat generated by the low-power operating point of the motor is insufficient to heat the air conditioning system, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system, that is, the motor and PTC can work together to provide heat to the air conditioning system of the new energy vehicle. When the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the thermal management controller 3 feeds back to the vehicle controller 5 that the battery needs heating, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth condition... If the conditions are met (4 and 5), the heat generated by the motor at its low power operating point will heat the battery, thus achieving battery heating. If the heat generated by the motor at its low power operating point is insufficient to heat the air conditioning system, the thermal management controller 3 will control the PTC to provide heat to the battery. In other words, the motor and PTC can work together to provide heat to the battery of the new energy vehicle. When the vehicle controller 5 receives a request command for cabin heating and battery heating from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth and fifth conditions, the heat generated by the motor at its low power operating point will heat the air conditioning system and battery, thus achieving cabin heating and battery heating. If the heat generated by the motor at its low power operating point is insufficient to heat the air conditioning system, the thermal management controller 3 will control the PTC to provide heat to the air conditioning system and battery. This allows the motor and PTC to work together to provide heat to the air conditioning system and battery of the new energy vehicle. This reduces the power consumption of the PTC or its utilization, effectively lowering costs and improving heat energy conversion. Furthermore, the heat management control system and method of the present invention cover the vehicle driving conditions to the greatest extent.

[0041] The fourth condition is that the vehicle is ready; the fifth condition is that the motor speed is not less than the preset speed. The preset speed is 50 revolutions per minute.

[0042] Figure 2 This is a flowchart of a heat management and control method for a new energy vehicle according to the present invention. The method includes the following steps:

[0043] S1: Vehicle controller 5 determines the vehicle status. If vehicle controller 5 determines the vehicle is in a parked state, it proceeds to S2; if vehicle controller 5 determines the vehicle is in a driving state, it proceeds to S6. Figure 2 S1. Specifically, the vehicle controller 5 first determines whether the vehicle is in a parked state or a driving state. If the vehicle controller 5 determines that the vehicle is in a parked state, it proceeds to S2. If the vehicle controller 5 determines that the vehicle is in a driving state, it proceeds to S6.

[0044] S2: Input a heating request command to the vehicle controller 5 via the vehicle communication module (T-BOX) 1 or the instrument module 2; that is, corresponding to Figure 2 Specifically, in the parked state, when the driver needs cabin heating or battery heating, the driver can remotely control the cabin heating or battery heating via the terminal APP. After the driver remotely controls the cabin heating or battery heating via the terminal APP, the vehicle communication module (T-BOX) 1 will input the cabin heating or battery heating request command to the vehicle controller 5; the driver can also activate the cabin heating or battery heating through the function menu in the instrument module 2. After the driver activates the cabin heating or battery heating through the function menu in the instrument module 2, the instrument module 2 will input the cabin heating or battery heating request command to the vehicle controller 5.

[0045] The terminal APP and instrument module 2 mentioned above both have cabin heating and battery heating functions in their function menus.

[0046] Furthermore, during the above process, if the driver only turns on the cabin heating, the vehicle communication module (T-BOX) 1 or the instrument module 2 inputs a cabin heating request command to the vehicle controller 5; if the driver only turns on the battery heating, the vehicle communication module (T-BOX) 1 or the instrument module 2 inputs a battery heating request command to the vehicle controller 5; if the driver turns on both the cabin heating and the battery heating at the same time, the vehicle communication module (T-BOX) 1 or the instrument module 2 inputs both cabin heating and battery heating request commands to the vehicle controller 5.

[0047] S3: Thermal management controller 3 sends feedback information to vehicle controller 5 regarding whether the battery requires heating; that is, corresponding to... Figure 2Specifically, if the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, the vehicle controller 5 will not control the thermal management controller 3 to send feedback information on whether the battery needs heating to the vehicle controller 5; if the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, the vehicle controller 5 will control the thermal management controller 3 to send feedback information on whether the battery needs heating to the vehicle controller 5; if the vehicle controller 5 receives both cabin heating and battery heating request commands from the vehicle communication module (T-BOX) 1 or the instrument module 2, the vehicle controller 5 will control the thermal management controller 3 to send feedback information on whether the battery needs heating to the vehicle controller 5.

[0048] S4: The vehicle controller 5 determines whether the vehicle simultaneously meets the first, second, and third conditions; if yes, proceed to S5; otherwise, proceed to S9; that is, corresponding to... Figure 2 In step S4, specifically, if the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, the vehicle controller 5 will determine whether the vehicle simultaneously meets the first, second, and third conditions. If yes, it proceeds to S5; otherwise, it proceeds to S9. If the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the thermal management controller 3 feeds back information to the vehicle controller 5 indicating that the battery needs heating, the vehicle controller 5 will determine whether the vehicle simultaneously meets the first, second, and third conditions. If yes, it proceeds to S5; otherwise, it proceeds to S9. Proceed to S9; If the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the information fed back to the vehicle controller 5 by the thermal management controller 3 is that the battery does not require heating, then the vehicle controller 5 will not determine whether the vehicle simultaneously meets the first, second, and third conditions, and proceed to S9; If the vehicle controller 5 receives a cabin heating and battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, then the vehicle controller 5 will determine whether the vehicle simultaneously meets the first, second, and third conditions. If yes, proceed to S5; otherwise, proceed to S9.

[0049] The first condition is that the vehicle is not ready; the second condition is that the vehicle is in park; and the third condition is that the vehicle is connected to high voltage and the high voltage is fault-free.

[0050] S5: The motor controller (MCU) 4 controls the motor to enter a stall state; then enters S9; which corresponds to... Figure 2In S5, specifically, when the vehicle controller 5 determines in S4 that the vehicle simultaneously meets the first condition, the second condition, and the third condition, the vehicle controller 5 controls the motor controller (MCU) 4 to control the motor to enter a stall state.

[0051] Specifically, if the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, it provides heat to the air conditioning system through the stalled motor, thereby achieving cabin heating. When the heat provided by the stalled motor to the air conditioning system is insufficient, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system, meaning that the motor and PTC can work together to provide heat to the air conditioning system of the new energy vehicle. If the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the information fed back to the vehicle controller 5 by the thermal management controller 3 indicates that the battery needs heating, it provides heat to the battery through the stalled motor, thereby achieving cabin heating. This system enables battery heating. When the motor's stall condition provides insufficient heat to the battery, the thermal management controller 3 controls the PTC to provide heat to the battery. In other words, the motor and PTC work together to provide heat to the battery of the new energy vehicle. If the vehicle controller 5 receives a request for cabin heating and battery heating from the vehicle communication module (T-BOX) 1 or the instrument module 2, the motor's stall condition provides heat to the air conditioning system and battery, thus enabling cabin heating and battery heating. Again, when the motor's stall condition provides insufficient heat to the air conditioning system and battery, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system and battery. This allows for the motor and PTC to work together to provide heat to the air conditioning system and battery of the new energy vehicle. This reduces the PTC's power consumption or utilization, effectively lowering costs and improving heat conversion. Furthermore, the thermal management control system and method of this invention cover the vehicle's operating conditions to the greatest extent possible.

[0052] Furthermore, when the motor is stalled to provide heat to the air conditioning system or battery, if the vehicle controller 5 determines that at least one of the first, second, and third conditions is not met, the motor controller 3 controls the motor to exit the stall state.

[0053] S6: The motor controller (MCU) 4 determines whether the motor's electrical power can only meet the drive requirements. If not, proceed to S7; if yes, proceed to S9. Figure 2Specifically, in driving mode, when the driver needs cabin heating or battery heating, the driver can control the cabin heating or battery heating via the terminal APP. After the driver controls the cabin heating or battery heating via the terminal APP, the vehicle communication module (T-BOX) 1 will input the cabin heating or battery heating request command to the vehicle controller 5. The driver can also activate the cabin heating or battery heating through the function menu in the instrument module 2. After the driver activates the cabin heating or battery heating through the function menu in the instrument module 2, the instrument module 2 will input the cabin heating or battery heating request command to the vehicle controller 5. After activating the cabin heating or battery heating through the terminal APP or the function menu in the instrument module 2, the motor controller (MCU) 4 will determine whether the motor power can only meet the driving requirements. If not, it will proceed to S7; if so, it will proceed to S9.

[0054] The terminal APP and instrument module 2 mentioned above both have cabin heating and battery heating functions in their function menus.

[0055] Furthermore, during the above process, if the driver only turns on the cabin heating, the vehicle communication module (T-BOX) 1 or the instrument module 2 inputs a cabin heating request command to the vehicle controller 5; if the driver only turns on the battery heating, the vehicle communication module (T-BOX) 1 or the instrument module 2 inputs a battery heating request command to the vehicle controller 5; if the driver turns on both the cabin heating and the battery heating at the same time, the vehicle communication module (T-BOX) 1 or the instrument module 2 inputs both cabin heating and battery heating request commands to the vehicle controller 5.

[0056] S7: Vehicle controller 5 determines whether the vehicle simultaneously meets the fourth and fifth conditions. If yes, proceed to S8; otherwise, proceed to S9. Figure 2Specifically, in step S7, when the motor controller (MCU) 4 determines that the motor's electrical power is not sufficient to meet the drive requirements, if the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, the vehicle controller 5 will determine whether the vehicle simultaneously meets the fourth and fifth conditions. If yes, it proceeds to step S8; otherwise, it proceeds to step S9. If the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the thermal management controller 3 feeds back information to the vehicle controller 5 indicating that the battery needs heating, the vehicle controller 5 will determine whether the vehicle simultaneously meets the fourth and fifth conditions. If the conditions are met, proceed to S8; otherwise, proceed to S9. If the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the information fed back to the vehicle controller 5 by the thermal management controller 3 indicates that the battery does not require heating, then the vehicle controller 5 will not determine whether the vehicle simultaneously meets the fourth and fifth conditions, and proceed to S9. If the vehicle controller 5 receives a cabin heating and battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, then the vehicle controller 5 will determine whether the vehicle simultaneously meets the fourth and fifth conditions. If yes, proceed to S8; otherwise, proceed to S9.

[0057] The fourth condition is that the vehicle is ready; the fifth condition is that the motor speed is not less than the preset speed. The preset speed is 50 revolutions per minute.

[0058] S8: The heat generated at the low-power operating point of the motor supplies heat to the air conditioning system and the battery; that is, corresponding to... Figure 2Specifically, when the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth and fifth conditions, then the heat generated by the low-power operating point of the motor is used to heat the air conditioning system, thereby achieving cabin heating. When the heat generated by the low-power operating point of the motor is insufficient to heat the air conditioning system, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system, that is, the motor and PTC can work together to provide heat to the air conditioning system of the new energy vehicle. When the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the information fed back to the vehicle controller 5 by the thermal management controller 3 indicates that the battery needs heating, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth and fifth conditions, then the heat generated by the low-power operating point of the motor is used to heat the air conditioning system. The generated heat is used to heat the battery, thus achieving battery heating. When the heat generated by the motor at its low power operating point is insufficient to heat the air conditioning system, the thermal management controller 3 controls the PTC to provide heat to the battery. This means that the motor and PTC can work together to provide heat to the battery of the new energy vehicle. When the vehicle controller 5 receives a request command for cabin heating and battery heating from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth and fifth conditions, the heat generated by the motor at its low power operating point is used to heat the air conditioning system and battery, thus achieving cabin heating and battery heating. When the heat generated by the motor at its low power operating point is insufficient to heat the air conditioning system, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system and battery. This means that the motor and PTC can work together to provide heat to the air conditioning system and battery of the new energy vehicle. This reduces the power consumption or utilization of the PTC, effectively reducing costs and improving heat energy conversion. Furthermore, the thermal management control system and method of this invention cover the vehicle's driving conditions to the greatest extent possible.

[0059] Specifically, when the heat generated by the low-power operating point of the motor is used to heat the air conditioning system or the battery, if the vehicle controller 5 determines that at least one of the fourth and fifth conditions is not met, then it stops using the heat generated by the low-power operating point of the motor to heat the air conditioning system or the battery.

[0060] S9: End; corresponding to Figure 2 S9 in the middle.

[0061] The role and effect of the embodiments

[0062] In the parked state, if the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, it provides heat to the air conditioning system through the stalled motor, thereby achieving cabin heating. When the heat provided by the stalled motor to the air conditioning system is insufficient, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system, meaning that the motor and PTC can work together to provide heat to the air conditioning system of the new energy vehicle. If the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the information fed back to the vehicle controller 5 by the thermal management controller 3 indicates that the battery needs heating, it provides heat to the battery through the stalled motor, thereby achieving cabin heating. This system enables battery heating. When the motor's stall condition provides insufficient heat to the battery, the thermal management controller 3 controls the PTC to provide heat to the battery. In other words, the motor and PTC work together to provide heat to the battery of the new energy vehicle. If the vehicle controller 5 receives a request for cabin heating and battery heating from the vehicle communication module (T-BOX) 1 or the instrument module 2, the motor's stall condition provides heat to the air conditioning system and battery, thus enabling cabin heating and battery heating. Again, when the motor's stall condition provides insufficient heat to the air conditioning system and battery, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system and battery. This allows for the motor and PTC to work together to provide heat to the air conditioning system and battery of the new energy vehicle. This reduces the PTC's power consumption or utilization, effectively lowering costs and improving heat conversion. Furthermore, the thermal management control system and method of this invention cover the vehicle's operating conditions to the greatest extent possible.

[0063] When the vehicle controller 5 receives a cabin heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth and fifth conditions, then the heat generated by the low-power operating point of the motor is used to heat the air conditioning system, thereby achieving cabin heating. When the heat generated by the low-power operating point of the motor is insufficient to heat the air conditioning system, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system. That is, the motor and PTC can work together to provide heat to the air conditioning system of the new energy vehicle. When the vehicle controller 5 receives a battery heating request command from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the thermal management controller 3 feeds back to the vehicle controller 5 that the battery needs heating, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth and fifth conditions, then the low-power operating point of the motor is used to heat the air conditioning system. The heat generated at the motor's low-power operating point is used to heat the battery, thus achieving battery heating. When the heat generated at the motor's low-power operating point is insufficient to heat the air conditioning system, the thermal management controller 3 controls the PTC to provide heat to the battery. This means the motor and PTC can work together to provide heat to the battery of the new energy vehicle. When the vehicle controller 5 receives a request command for cabin heating and battery heating from the vehicle communication module (T-BOX) 1 or the instrument module 2, and the vehicle controller 5 determines that the vehicle simultaneously meets the fourth and fifth conditions, the heat generated at the motor's low-power operating point is used to heat the air conditioning system and battery, thus achieving cabin heating and battery heating. When the heat generated at the motor's low-power operating point is insufficient to heat the air conditioning system, the thermal management controller 3 controls the PTC to provide heat to the air conditioning system and battery. This means the motor and PTC can work together to provide heat to the air conditioning system and battery of the new energy vehicle. This reduces the power consumption or utilization of the PTC, effectively lowering costs and improving heat energy conversion. Furthermore, the thermal management control system and method of this invention cover the vehicle's driving conditions to the greatest extent possible.

[0064] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A heat management control system for a new energy vehicle, characterized in that: It includes an in-vehicle communication module, an instrument module, a thermal management controller, a motor controller, and a vehicle controller. The in-vehicle communication module is connected to the vehicle controller; the instrument module is connected to the vehicle controller; the thermal management controller is connected to the vehicle controller; and the motor controller is connected to the vehicle controller. The vehicle controller determines whether the vehicle is in a parked or driving state. When the vehicle controller determines that the vehicle is in a parked state, it inputs a heating request command to the vehicle controller through the vehicle communication module or the instrument module; the thermal management controller feeds back information on whether the battery needs heating to the vehicle controller; the vehicle controller determines whether the vehicle simultaneously meets the first condition, the second condition and the third condition; The first condition is that the vehicle is not ready; the second condition is that the vehicle is in park; the third condition is that the vehicle is connected to high voltage and the high voltage is fault-free. When the vehicle simultaneously meets the first, second, and third conditions, the motor controller controls the motor to enter a stall state; when the heat provided by the stalled motor is insufficient, the thermal management controller controls the PTC to provide heat to the air conditioning system and battery, so that the motor and PTC work together to provide heat to the air conditioning system and battery. When the vehicle controller determines that the vehicle is in a driving state, the motor controller determines whether the motor power can only meet the driving requirements. If the motor controller determines that the motor power can not only meet the driving requirements, the vehicle controller determines whether the vehicle simultaneously meets the fourth and fifth conditions. The fourth condition is that the vehicle is ready; the fifth condition is that the motor speed is not less than the preset speed. When the vehicle controller determines that the vehicle simultaneously meets the fourth and fifth conditions, it uses the heat generated by the low-power operating point of the motor to heat the air conditioning system and the battery. When the heat provided by the low-power operating point of the motor is insufficient, it controls the PTC through the thermal management controller to provide heat to the air conditioning system and the battery, so that the motor and PTC work together to provide heat to the air conditioning system and the battery.

2. The heat management control system for a new energy vehicle as described in claim 1, characterized in that: The preset rotation speed is 50 revolutions per minute.

3. A control method for a heat management control system for a new energy vehicle as described in any one of claims 1 to 2, characterized in that: The method includes the following steps: S1: The vehicle controller determines the vehicle status. If the vehicle controller determines that the vehicle is in a parked state, it proceeds to S2. If the vehicle controller determines that the vehicle is in a driving state, it proceeds to S6. S2: Input a heating request command to the vehicle controller via the vehicle communication module or instrument module; S3: The thermal management controller sends information to the vehicle controller about whether the battery needs heating. S4: The vehicle controller determines whether the vehicle simultaneously meets the first, second, and third conditions; if yes, proceed to S5; otherwise, proceed to S9. S5: The motor controller puts the motor into a stall state; then proceeds to S9. S6: The motor controller determines whether the motor power can only meet the drive requirements. If not, proceed to S7; if yes, proceed to S9. S7: The vehicle controller determines whether the vehicle simultaneously meets the fourth and fifth conditions. If yes, proceed to S8; otherwise, proceed to S9. S8: The heat generated by the low-power operating point of the motor is used to heat the air conditioning system and the battery; S9: End.

Images