Thermal management control method and thermal management controller for energy storage equipment

Abstract

The invention discloses an energy storage equipment heat management control method and a heat management controller, and the method comprises the following steps: S1, collecting signals of all sensors and a demand instruction signal of a BMS battery management module, and uploading the signals to a TMS heat management system controller; s2, after the TMS controller obtains the working states and information of the sensors and the working devices, the collected information is processed, and instruction signals are output to an actuator control unit; s3, the actuator control unit cooperatively controls a plurality of actuators to work according to the instruction signal, and uploads working state data to an upper computer through a CAN bus and an RS485 bus for interaction; and S4, the data storage unit stores and backs up the data in real time, and the upper computer software calls the data according to the instruction. The double-system unit requirement is met, a cooling loop of the PCS energy storage converter is reserved, and multiple working modes including the refrigeration mode, the heating mode, the dehumidification mode and the natural cooling mode can be controlled and achieved.

Description

Technical Field

[0001] The present invention relates to the field of energy storage thermal management, and particularly to a thermal management control method and a thermal management controller for an energy storage device. Background Art

[0002] The thermal management controller of an energy storage device is a core component used to control the energy storage thermal management system. The performance and lifespan of the key components of an energy storage device, namely the battery and the power conversion system (PCS), are greatly affected by temperature. The thermal management controller can monitor and regulate the temperature inside the energy storage device to ensure that the operating temperatures of the battery, PCS, and other key components are within an appropriate range. The thermal management controller includes sensors (temperature, pressure), a control unit, and an actuator. The sensors are used to monitor the temperature and pressure on the coolant side and the refrigerant side and input them to the control unit. The control unit calculates and outputs an execution strategy based on the sensor data received, and the actuator executes actions according to the strategy to achieve the purpose of regulating the coolant temperature of the energy storage device.

[0003] However, the existing thermal management controllers for energy storage devices have the following problems:

[0004] 1. Currently, the hardware resources of a single energy storage thermal management controller cannot fully meet the requirements of the energy storage liquid cooling dual system. There is no reservation for functions such as PCS flow distribution, dehumidification, and natural cooling. If the above functions need to be satisfied simultaneously, additional expansion board interfaces are required, which affects the space layout, wiring, and cost control.

[0005] 2. Currently, the components in the energy storage thermal management device all adopt independent control and independent layout. The components are connected to the control module through wire harnesses. A large number of wire harnesses are required, and the control module ends are all scattered connection points. The wire harness connection is complex, and there is a lack of protection measures at the wiring terminals.

[0006] 3. Currently, the communication method of the energy storage thermal management controller uses RS485 more often, without CAN communication and LIN communication interfaces. It cannot communicate with energy storage devices that use CAN communication and cannot drive actuators (such as water valves, electronic expansion valves) with LIN communication interfaces. The application scenarios and the selection and matching range are limited.

[0007] 4. Currently, the energy storage thermal management controller only supports single P (pressure sensor) and single T (temperature sensor), and does not support PT (pressure temperature) integrated sensors. It is not compatible with direct drive control of single / double pole expansion valves, and the selection and matching range and cost control are limited. Summary of the Invention

[0008] In order to solve the existing problems, the present invention provides a thermal management control method and a thermal management controller for an energy storage device. The specific solutions are as follows:

[0009] A thermal management control method for an energy storage device includes the following steps:

[0010] S1. Collect the signals of each sensor and the demand instruction signals of the BMS battery management module, and upload them to the TMS thermal management system controller;

[0011] S2. After the TMS thermal management system controller obtains the working states and information of the above sensors and working devices, it processes the collected information and outputs instruction signals to the actuator control unit;

[0012] S3. The actuator control unit cooperatively controls the operation of multiple loads according to the instruction signals, and uploads the working state data to the host computer through the CAN bus and the RS485 bus for interaction;

[0013] S4. The data storage unit stores and backs up the data in real time, and the host computer software calls according to the instructions.

[0014] Preferably, the signals of each sensor in step S1 include the temperature and pressure at the inlet and outlet of the unit, the ambient temperature, the pressure and temperature of the refrigerant at the inlet and outlet of the compressor read by the sensor; the demand instruction signals include the thermal management mode request of the BMS battery management module, the thermal management request of the PCS energy storage converter, the battery target temperature, the maximum temperature of the battery cell, and the minimum temperature of the battery cell.

[0015] Preferably, the actuators in step S3 include an electronic fan, a water pump, a compressor, an electronic expansion valve, and a multi-way water valve.

[0016] A thermal management controller for an energy storage device, comprising a power supply module, a signal acquisition module, a BMS battery management module, a communication module, an MCU main control module, and an actuator drive module;

[0017] The power supply module supplies power to each module in the system, including a low-voltage power supply and a DC / DC power supply module powered by the low-voltage power supply. The DC / DC power supply module includes an anti-reverse filter circuit and a power conversion module;

[0018] The signal acquisition module includes temperature and pressure sensors for collecting data on the temperature and pressure at the inlet and outlet of the unit, the pressure and temperature of the refrigerant at the inlet and outlet of the compressor, and the ambient temperature;

[0019] The actuator drive module includes a water pump / fan PWM output drive module, an electronic expansion stepper motor drive module, a proportional water valve servo motor output drive module, and a solenoid valve relay module; the actuator drive module sends instructions to the actuator, and the actuator acts after receiving the corresponding instructions; the actuator includes a cooling fan / water pump, an electronic expansion valve, a proportional water valve, a PTC relay coil, and a solenoid valve;

[0020] The BMS battery management module is used for sending demand instruction signals;

[0021] The MCU main control module is used to implement power management, network management, signal acquisition, component drive, networking service and diagnostic service, and built-in thermal management control strategy, supporting remote version upgrade and downgrade;

[0022] The communication module is used for communication between the MCU main control module and the actuator. The communication module includes RS485 communication module, CAN communication module, LIN communication module, software burning and diagnostic module; the LIN communication module is used for communication between the MCU main control module and external solenoid valves and proportional water valves; the CAN communication module is generally used for communication between the MCU main control module and communication components such as BMS battery management module, compressor drive module, PTC control module, etc.; the RS485 communication module is used for communication between the MCU main control module and BMS battery management module, compressor, PLC controller.

[0023] Preferably, the MCU main control module selects the main control chip of the AEC-Q100 series of Renesas Semiconductor.

[0024] Preferably, the energy storage device thermal management controller further includes a cooling circuit of the PCS energy storage converter. The water inlet of the PCS energy storage converter and the water inlet of the PACK battery pack are both connected to a proportional water valve. When the proportional water valve is a three-way valve, the cold water in the cooling circuit passes through the three-way valve. One way enters the battery pack through the water inlet of the PACK battery pack to cool the battery pack, and the other way enters the PCS energy storage converter through the water inlet of the PCS energy storage converter to cool the PCS energy storage converter.

[0025] A computer-readable storage medium stores a computer program. After the computer program runs, it executes the method described in any one of the above.

[0026] A computer system includes a processor and a storage medium. The storage medium stores a computer program. The processor reads and runs the computer program from the storage medium to execute the method described in any one of the above.

[0027] The beneficial effects of the present invention are as follows:

[0028] The present invention meets the requirements of a dual-system unit, reserves a cooling circuit for the PCS energy storage converter, and can control and implement multiple working modes: refrigeration, heating, dehumidification, and natural cooling modes. The present invention also is compatible with CAN / LIN / RS485 communication interfaces and can drive actuators controlled by multiple different buses. At the same time, the present invention supports PT integrated sensors, saves space and cost, and is compatible with direct drive control of single / double pole expansion valves. The water valve control is compatible with Lin communication & servo motor direct drive functions. Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 It is a flowchart of the thermal management control method for the energy storage device of the present invention;

[0031] Figure 2 It is a schematic block diagram of the thermal management controller for the energy storage device of the present invention;

[0032] Figure 3 It is a flowchart of the liquid cooling technology principle with one-way coolant outlet of the present invention;

[0033] Figure 4 It is a flowchart of the liquid cooling technology principle with two-way coolant outlet of the present invention;

[0034] Figure 5 It is a startup strategy diagram for each working mode of the thermal manager of the present invention;

[0035] Figure 6 It is a system flowchart of the present invention in the refrigeration working mode;

[0036] Figure 7 It is a system flowchart of the present invention in the heating working mode;

[0037] Figure 8 It is a system flowchart of the present invention in the self-circulation working mode;

[0038] Figure 9 It is a system flowchart of the present invention in the dehumidification working mode. Specific embodiments

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0040] Such as Figure 1 , a thermal management control method for an energy storage device, includes the following steps:

[0041] S1, collect the signals of each sensor and the demand instruction signal of the BMS battery management module, and upload them to the TMS thermal management system controller.

[0042] Among them, each sensor signal includes data such as the temperature and pressure of the inlet and outlet of the unit read by the sensor, the ambient temperature, and the pressure temperature of the compressor; the demand instruction signal includes the thermal management mode request of the BMS battery management module, the thermal management request of the PCS energy storage converter, the battery target temperature, the maximum cell temperature, and the minimum cell temperature.

[0043] S2. After the TMS thermal management system controller obtains the working states and information of the above sensors and working devices, it processes the collected information and outputs an instruction signal to the actuator. The actuator includes an electronic fan, a water pump, a compressor, an electronic expansion valve, and a multi-way water valve.

[0044] S3. The actuator control unit cooperatively controls the operation of multiple loads according to the instruction signal and uploads the working state data to the host computer through the CAN bus and the RS485 bus for interaction.

[0045] S4. The data storage unit stores and backs up the data in real time, and the host computer software calls according to the instruction.

[0046] Such as Figure 2 , a thermal management controller for an energy storage device, including a power supply module, a signal acquisition module, a BMS battery management module, a communication module, an MCU main control module, and an actuator drive module.

[0047] The power supply module supplies power to each module in the system, including a low-voltage power supply and a DC / DC power supply module powered by the low-voltage power supply. The power supply module is compatible with 12V / 24V power input. The DC / DC power supply module includes an anti-reverse filter circuit and a power conversion module. The power supply module converts the 12V voltage output by the low-voltage power supply into a small-current and high-precision 5V power supply to supply power to components with high voltage accuracy requirements, and can be used in scenarios with high voltage accuracy requirements such as the main control chip and the sensor A / D conversion module.

[0048] The signal acquisition module includes a temperature and pressure sensor PT for collecting data such as the temperature and pressure of the inlet and outlet of the unit, the temperature and pressure of the compressor, and the ambient temperature.

[0049] Sensor A / D conversion module: Connects to the external signal acquisition module, converts external sensor voltage and other signals into digital signals for processing and use by the MCU main control unit.

[0050] The execution drive module includes a water pump / fan PWM output drive module, an electronic expansion stepper motor drive module, a proportional water valve servo motor output drive module, and a solenoid valve relay module; the execution drive module sends instructions to the actuator, and the actuator operates after receiving the corresponding instructions; the actuator includes a cooling fan / water pump, an electronic expansion valve, a proportional water valve, a PTC, and a solenoid valve.

[0051] Among them, the solenoid valve relay module: is used to drive switching devices with a small current, and is used to drive 12V switching devices with a small current, such as solenoid valves, three-way valves, etc. The stepper motor drive module is an external device for driving a stepper motor, and the main device is an electronic expansion valve. The proportional water valve servo motor output drive module is used to drive external devices with a servo motor, and the main devices are multi-way water valves such as three-way water valves and six-way water valves. The water pump / fan PWM output drive module is used for communication between the MCU main control unit and external PWM communication devices, and collects the duty cycle or frequency of its PWM signal. Common external devices for PWM signal output include fans and water pumps.

[0052] The BMS battery management module is used for sending demand instruction signals.

[0053] The MCU main control module is used to implement power management, network management, signal acquisition, component drive, networking service, and diagnostic service. It can build in thermal management control strategies and support remote version upgrade. In this embodiment, the MCU main control unit selects the main control chip of the AEC-Q100 series of Renesas Semiconductor, which has high computing performance, sufficient memory, rich interfaces, and a more perfect OTA function.

[0054] The communication module is used for communication between the MCU main control module and the actuator. The communication module includes an RS485 communication module, a CAN communication module, a LIN communication module, a software burning and diagnostic module; the LIN communication module is used for communication between the MCU main control module and external solenoid valves and proportional water valves; the CAN communication module is generally used for communication between the MCU main control module and the BMS battery management module, the compressor drive module, and the PTC control module; the RS485 communication module is used for communication between the MCU main control module and the BMS battery management module, the compressor, and the PLC controller.

[0055] The thermal management controller of the energy storage device also includes the cooling capacity adjustment function of the cooling circuit of the PCS energy storage converter. The water inlet of the PCS energy storage converter and the water inlet of the PACK battery pack are both connected to a proportional water valve. When the proportional water valve is a three-way valve, the cold water in the cooling circuit passes through the three-way valve. One way enters the battery pack through the water inlet of the PACK battery pack to cool the battery pack, and the other way enters the PCS energy storage converter through the water inlet of the PCS energy storage converter to cool the PCS energy storage converter. The water outlet of the cooling circuit of the PCS energy storage converter can be integrated at the water outlet of the battery pack, such as Figure 4 , or it can be a separate path, such as Figure 3 . Among them, Figure 3 and Figure 4 the Chiller in is a heat exchanger, the main body of which is composed of many plate heat exchange fins stacked up. The coolant and the refrigerant flow into the heat exchanger main body in a convection form. The coolant and the refrigerant are separated by a layer and form a sandwich structure with each other. During the convection process, heat is transferred from the coolant to the refrigerant to achieve heat exchange. In the figure, when the water loss pressure decreases, the gas pressure in the expansion tank is greater than the water pressure. At this time, the gas expands and squeezes the water in the airbag out to make up for the system; the electronic expansion valve uses the electrical signal generated by the regulated parameter to control the voltage or current applied to the expansion valve, and then achieves the purpose of regulating the liquid supply volume.

[0056] The present invention has the following several working modes: battery refrigeration mode, battery heating mode, self-circulation mode and dehumidification mode.

[0057] Such as Figure 5 shown, when the MCU main control module receives the self-circulation mode request sent by the host computer, it enters the self-circulation and judges the current state according to the water temperature in real time.

[0058] When the water temperature is less than APPTmm_AutoHeat_Temp_Param - 3°C, heating will start and enter the battery heating mode. When the temperature is greater than APPTmm_AutoHeat_Temp_Param + 3°C, heating will stop and enter the self-circulation. When the water temperature is greater than APPTmm_AutoCold_Temp_Param + 3°C, it will enter the refrigeration mode from the self-circulation. When the temperature is less than APPTmm_AutoCold_Temp_Param - 3°C, it will exit the refrigeration mode and enter the self-circulation.

[0059] In the battery refrigeration mode, the thermal management controller controls the compressor, water pump, electronic expansion valve, multi-way water valve, and fan to start as Figure 6 shown. The operation process is as follows:

[0060] · Detect whether the power supply module is normal

[0061] · Software initialization, component initialization

[0062] · The MCU main control unit receives the power-on instruction and the mode and target water temperature commands sent by the BMS.

[0063] · The MCU main control unit enters the refrigeration mode and self-checks for faults.

[0064] · If there is a fault, the MCU main control unit sends an instruction to stop the compressor through the communication module and sends an instruction to stop the fan operation through the PWM output drive module.

[0065] · If there is no fault, the MCU main control unit sends an instruction to start the water pump through the PWM output drive module.

[0066] · The PT sensor monitors the inlet and outlet water temperature and pressure of the liquid chiller. After the water pump runs for 60 seconds, the next cycle judgment is made. If the outlet water temperature ≥ T set target temperature + refrigeration hysteresis and the compressor start condition is met, the MCU main control unit sends instructions to the actuator unit and the communication unit to turn on the fan, compressor, and expansion valve control.

[0067] · In the cycle judgment, if the outlet water temperature ≤ T set target temperature - refrigeration hysteresis, the MCU main control unit sends instructions to the actuator unit and the communication unit to stop the compressor and fan operation.

[0068] · The subsystem electronic expansion valve EXV is set to the initial opening.

[0069] · If the BMS stop instruction is received or a first-level or partial second-level fault occurs, the MCU main control unit sends an instruction to the actuator unit, and the circulating water pump is closed after a 60-second delay.

[0070] · The unit enters the standby mode.

[0071] In the battery heating mode, the thermal management controller controls the start of the water pump, PTC, and fan, as Figure 7 shown.

[0072] The operation process is as follows:

[0073] · Detect whether the power module is normal

[0074] · Software initialization, component initialization

[0075] · The MCU main control unit receives the power-on instruction and the mode and target water temperature commands sent by the BMS.

[0076] · The MCU main control unit enters the refrigeration mode and self-checks for faults.

[0077] · If there is a fault, the MCU main control unit sends an instruction to turn off the PTC through the communication module and the actuator unit relay low-side drive module.

[0078] · If there is no fault, the MCU main control unit sends an instruction to start the water pump through the PWM output driving module;

[0079] · The PT sensor monitors the inlet and outlet water temperature and pressure of the liquid chiller. After the water pump runs for 60 seconds, the next cycle judgment is carried out. If the outlet water temperature ≤ T set target temperature - heating dead band and the PTC activation condition is met, the MCU main control unit sends instructions to the actuator unit and the communication unit to activate the PTC;

[0080] · In the cycle judgment, if the outlet water temperature ≥ T set target temperature + heating dead band, the MCU main control unit sends instructions to the actuator unit and the communication unit to turn off the PTC;

[0081] · If a BMS stop instruction is received or a first-level or some second-level faults occur, the MCU main control unit sends an instruction to the actuator unit, and the circulating water pump is turned off after a 60-second delay;

[0082] · The unit enters the standby mode.

[0083] In the natural cooling mode of the battery, the thermal management controller controls the water pump and the fan to start. Natural cooling means that when the ambient temperature is not high, the compressor is not turned on for refrigeration, and the heat is only blown out through the water pump, the fan and the radiator, as Figure 8 shown. The operation process is as follows:

[0084] · Detect whether the power module is normal;

[0085] · Software initialization, component initialization;

[0086] · The MCU main control unit receives the start-up instruction and receives the mode and target water temperature commands sent by the BMS;

[0087] · The MCU main control unit enters the self-loop mode and self-checks whether there are faults;

[0088] · If there is a fault, the MCU main control unit sends an instruction to turn off the water pump through the PWM driving module of the actuator unit;

[0089] · If there is no fault, the MCU main control unit sends an instruction to turn on the water pump through the PWM driving module;

[0090] · In the cycle judgment, if a BMS stop instruction is received or a first-level or some second-level faults occur, the MCU main control unit sends an instruction to the actuator unit, and the circulating water pump is turned off;

[0091] · The unit enters the standby mode.

[0092] The realization of the system dehumidification mode is as Figure 9As shown in the figure, the dehumidification function is achieved through the EVA circuit; at the same time, the energy distribution between the dehumidification function and battery cooling is achieved by adjusting the opening degrees of EXV1 and EXV2; and the heat pump heating function is achieved through the LCC circuit while the dehumidification function is also achieved; in addition, the cold quantity distribution between the inverter circuit and the battery pack is achieved through the three-way water valve 2. As Figure 9 In the figure, in the refrigeration mode only: the refrigerant three-way valve leads to the condenser, and EXV1 is closed. In the dehumidification mode only: the refrigerant three-way valve leads to the condenser, and EXV2 is closed. In the refrigeration + dehumidification mode: the refrigerant three-way valve leads to the condenser, and the energy distribution between the dehumidification function and battery cooling is achieved by adjusting the opening degrees of EXV1 and EXV2. In the heat pump heating mode only: the refrigerant three-way valve leads to the LCC, and EXV2 is closed. In the PTC heating mode only: the refrigerant circuit stops working, and PTC heating is turned on when the ambient temperature is too low or the refrigerant system is abnormal. In the heat pump + PTC simultaneous heating mode: the refrigerant three-way valve leads to the LCC, EXV2 is closed, and PTC auxiliary heating is turned on only when the heat pump alone does not meet the heating requirement.

[0093] The present invention meets the requirements of a dual-system unit, reserves the cooling circuit for the PCS energy storage converter, and can be controlled to achieve multiple working modes: refrigeration, heating, dehumidification, and natural cooling modes. The present invention also is compatible with the communication interfaces of CAN / LIN / RS485 and can drive actuators controlled by multiple different buses. At the same time, the present invention supports PT integrated sensors, saving space and cost, and is compatible with the direct drive control of single / double-pole expansion valves. The water valve control is compatible with Lin communication & servo motor direct drive functions.

[0094] A computer-readable storage medium stores a computer program. After the computer program runs, it executes the method described in any one of the above.

[0095] A computer system includes a processor and a storage medium. The storage medium stores a computer program. The processor reads and runs the computer program from the storage medium to execute the method described in any one of the above.

[0096] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or a combination of the two. To clearly illustrate this interchangeability of hardware and software, the various illustrative components, blocks, modules, circuits, and steps are described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

[0097] In one or more exemplary embodiments, the described functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or code. The computer-readable medium includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. The storage media may be any available media that can be accessed by a computer. By way of example and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc where disks typically reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0098] The foregoing description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0099] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal management control method for energy storage equipment, characterized in that: The following steps are involved: S1, collects the sensor signals and the demand command signals of the BMS battery management module, and uploads them to the TMS thermal management system controller; S2, after the TMS thermal management system controller obtains the working status and information of the above sensors and working components, it processes the collected information and outputs a command signal to the actuator control unit; S3, the actuator control unit coordinates and controls the operation of multiple actuators according to the command signal, and uploads the working status data to the host computer through the CAN bus and RS485 bus for interaction; S4, the data storage unit stores and backs up the data in real time, and the host computer software calls it according to the instructions.

2. The method according to claim 1, characterized in that: The sensor signals in step S1 include data read by the sensors on the unit's water inlet and outlet temperature and pressure, ambient temperature, and the pressure and temperature of the compressor's inlet and outlet refrigerant; the demand command signal includes the thermal management mode request of the BMS battery management module, the thermal management request of the PCS energy storage inverter, the battery target temperature, the maximum cell temperature, and the minimum cell temperature.

3. The method according to claim 1, characterized in that: The actuators in step S3 include an electronic fan, a water pump, a compressor, an electronic expansion valve and a multi-way water valve.

4. A thermal management controller according to any one of the above claims, characterized in that: Including power supply module, signal acquisition module, BMS battery management module, communication module, MCU main control module, actuator drive module; The power supply module supplies power to each module in the system, including a low-voltage power supply and a DC / DC power supply module powered by the low-voltage power supply, wherein the DC / DC power supply module includes an anti-reverse filtering circuit and a power conversion module; The signal acquisition module includes a temperature and pressure sensor for collecting data on the temperature and pressure of the unit's water inlet and outlet, the temperature and pressure of the compressor's inlet and outlet refrigerant, and the ambient temperature; The execution drive module includes a water pump / fan PWM output drive module, an electronic expansion stepper motor drive module, a proportional water valve servo motor output drive module and a solenoid valve relay module; the execution drive module sends instructions to the actuator, and the actuator acts after receiving the corresponding instructions; the actuator includes a cooling fan / water pump, an electronic expansion valve, a proportional water valve, a PTC relay coil and a solenoid valve; The BMS battery management module is used to send a demand command signal; The MCU main control module is used to implement power management, network management, signal acquisition, component driving, networking services and diagnostic services, and has a built-in thermal management control strategy and supports remote lifting version; The communication module is used for communication between the MCU main control module and the actuator, and the communication module includes an RS485 communication module, a CAN communication module, a LIN communication module, a software burning and diagnostic module; the LIN communication module is used for communication between the MCU main control module and the external solenoid valve and proportional water valve; the CAN communication module is commonly used for communication between the MCU main control module and the BMS battery management module, the compressor drive module, and the PTC control module; the RS485 communication module is used for communication between the MCU main control module and the BMS battery management module, the compressor, and the PLC controller.

5. The thermal management controller according to claim 4, characterized in that: The MCU main control module uses the AEC-Q100 series main control chip of Renesas Semiconductor.

6. The thermal management controller according to claim 4 or 5, characterized in that: It also includes a cooling circuit for a PCS energy storage inverter, wherein the water inlet of the PCS energy storage inverter and the water inlet of the PACK battery pack are both connected to a proportional water valve. When the proportional water valve is a three-way valve, cold water in the cooling circuit passes through the three-way valve, one way enters the battery pack through the water inlet of the PACK battery pack to cool the battery pack, and the other way enters the PCS energy storage inverter through the water inlet of the PCS energy storage inverter to cool the PCS energy storage inverter.

7. A computer-readable storage medium, characterized in that: A computer program is stored on the medium, and after the computer program is run, the method according to any one of claims 1 to 3 is executed.

8. A computer system, characterized in that: The method comprises a processor and a storage medium, wherein a computer program is stored in the storage medium, and the processor reads and runs the computer program from the storage medium to execute the method as claimed in any one of claims 1 to 3.

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