A control method for a temperature control unit

Abstract

The invention discloses a control method for a temperature control unit, relates to the technical field of unit temperature control, and solves the technical problem of low consumption and efficiency when heating and starting a compressor under extreme environments in the prior art; the invention obtains real-time environmental data and equipment data by real-time monitoring of the environment of the temperature control unit, sets a temperature control starting range, matches the ambient temperature with the temperature control starting range to obtain a corresponding environmental state, sets a pre-temperature control mode of the temperature control unit based on the environmental state, and automatically selects the most appropriate pre-temperature control mode according to different environmental states; marks the real-time environmental data after startup as temperature control environmental data, sets a switching threshold according to a target coolant temperature, and dynamically adjusts the temperature control unit in combination with the temperature control environmental data, the pre-temperature control mode and the switching threshold to obtain adjustment equipment data, monitors the temperature change state of the coolant in real time, and adjusts the temperature of the temperature control unit in combination with the temperature change state and the adjustment equipment data.

Description

Technical Field

[0001] The invention belongs to the field of unit temperature control, and in particular relates to a control method for a temperature control unit. Background Art

[0002] Thermal management is an important part of electrochemical energy storage systems. Liquid cooling management systems use liquid as a cooling medium and utilize convection heat transfer to effectively remove the heat generated by the battery. Liquid cooling media has a high heat transfer coefficient and specific heat capacity, which can quickly reduce the maximum temperature of the battery and improve the uniformity of temperature distribution. In addition, liquid cooling systems have a compact structure and take up little space, so they are considered the main development direction of future commercial and industrial energy storage temperature control.

[0003] When the compressor is started, heating is required. In the prior art, the liquid cooling unit is switched between heating and cooling modes by switching a four-way valve, and heat exchange is achieved in a plate heat exchanger. When the ambient temperature is low, a simple heat pump system may not be able to meet the heating power requirements, while a heater can meet the heating requirements well. However, the power consumption of the heater is high, and heating cannot be achieved with optimal effect if only a heat pump system and a heater are used.

[0004] The present invention provides a control method for a temperature control unit to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a control method for a temperature control unit, which is used to solve the technical problems of low consumption and efficiency when heating and starting a compressor under extreme conditions in the prior art.

[0006] To achieve the above object, a first aspect of the present invention provides a control method for a temperature control unit, comprising:

[0007] Step 1: Conduct real-time detection of the unit environment to collect real-time environmental data, and collect equipment data of the temperature control unit equipment in real time;

[0008] Step 2: Set the pre-temperature control mode of the temperature control unit based on real-time environmental data;

[0009] Step 3: After starting the temperature control unit, mark the real-time environment data as temperature control environment data; dynamically adjust the device data based on the temperature control environment data and the pre-temperature control mode to obtain the adjusted device data;

[0010] Step 4: Control the temperature control unit by adjusting the equipment data to complete the temperature adjustment.

[0011] Preferably, the pre-temperature control mode of the temperature control unit is set based on real-time environmental data, including:

[0012] Extracting real-time environmental data; wherein the real-time environmental data includes the ambient temperature of the unit, the coolant temperature and the corresponding temperature time;

[0013] Set several groups of temperature control start ranges; match the ambient temperature with the temperature control start range to obtain the corresponding ambient state; analyze the ambient temperature in combination with the coolant temperature and temperature time to detect the cooling protection state; set the pre-temperature control mode of the PTC heater and the heat pump according to the ambient state and the cooling protection state.

[0014] Preferably, the matching of the ambient temperature with the temperature control start range to obtain a corresponding ambient state includes:

[0015] A1: Extract the ambient temperature and the temperature control start range; the temperature control start range includes the preheating temperature range, the heating temperature range and the extremely low temperature range;

[0016] A2: Determine whether the ambient temperature meets the extremely low temperature range; if yes, mark the ambient state of the temperature control unit as extremely low temperature; if no, jump to A3;

[0017] A3: Determine whether the ambient temperature meets the preheating temperature range; if yes, mark the corresponding ambient state as preheating state; if no, jump to A4;

[0018] A4: Determine whether the ambient temperature meets the heating temperature range; if yes, mark the corresponding ambient state as heating state; if no, detect the abnormal state of the ambient temperature.

[0019] Preferably, the combining of the coolant temperature and the temperature time to analyze the ambient temperature and detect the cooling protection state includes:

[0020] Check the coolant temperature of the coolant;

[0021] Divide the unit time, calculate the temperature change rate of the coolant temperature within the unit time; set the temperature drop protection threshold; determine whether the temperature change rate is greater than the temperature drop protection threshold; if so, generate a temperature drop protection signal, start the PTC heater and the heat pump at the same time, and integrate the start-up state of the PTC heater with the start-up state of the heat pump to obtain the temperature drop protection state; if not, continue to monitor the coolant temperature of the coolant; wherein, the temperature drop protection threshold is set according to the normal temperature drop rate of the coolant.

[0022] Preferably, the pre-temperature control mode of the PTC heater and the heat pump is set according to the environmental state and the temperature reduction protection state, including:

[0023] Extract environmental status and cooling protection status;

[0024] When the environment state is in the preheating state, set the extreme temperature threshold; determine whether the environment temperature is greater than the extreme temperature threshold; if yes, mark the pre-temperature control mode corresponding to the preheating state as the dual-start preheating mode; if no, mark the pre-temperature control mode corresponding to the preheating state as the single-start preheating mode; wherein the extreme temperature threshold is set by the staff according to the heat pump efficiency;

[0025] The pre-temperature control mode corresponding to the heating state is marked as the heating mode, and the pre-temperature control mode corresponding to the extremely low temperature state is marked as the extremely low temperature mode; when the cooling protection state is detected, the pre-temperature control mode corresponding to the cooling protection state is marked as the cooling protection mode.

[0026] Preferably, the dynamically adjusting the device data based on the temperature control environment data and the pre-temperature control mode to obtain the adjusted device data includes:

[0027] Monitor temperature control environment data in real time and extract pre-temperature control mode of temperature control equipment;

[0028] The environmental state when the temperature control device is started is marked as the initial environmental state, and the target coolant temperature is selected; a switching threshold is set based on the initial temperature and the target coolant temperature; and the coolant temperature after heating starts is marked as the heating temperature;

[0029] Determine whether the pre-temperature control mode of the temperature control device is the dual-start preheating mode; if yes, apply the switching threshold to the operating state of the control device in the dual-start preheating mode, and when the coolant temperature reaches the switching threshold, integrate the switching threshold, the adjustment temperature of the coolant after reaching the switching threshold, and the corresponding adjustment time as adjustment device data; if no, enable the corresponding pre-temperature control mode for heating.

[0030] Preferably, setting the switching threshold based on the initial temperature and the target coolant temperature includes:

[0031] Extract initial temperature and target coolant temperature;

[0032] Extract the heater efficiency of the PTC heater and the heat pump efficiency that increases with temperature from the equipment database, and calculate the temperature difference between the initial temperature and the target coolant temperature;

[0033] The switching threshold QHZ is calculated by the formula QHZ=WCZ×[JRT / RBT×(1-lnWCZ)]; wherein WCZ represents the temperature difference, JRT represents the heat pump efficiency of the heater, and RBT represents the heat pump efficiency of the heat pump.

[0034] Preferably, the temperature adjustment is completed by controlling the temperature control unit by adjusting the device data, including:

[0035] S1: extracting coolant data from the database; and extracting the heat pump power and adjustment equipment data of the heat pump at this time;

[0036] S2: Detect the temperature change state of the coolant, and calculate the fault threshold corresponding to the temperature change state by combining the temperature change state, coolant data and heat pump power; wherein the temperature change state includes a temperature increase change state and a temperature decrease change state;

[0037] S3: Calculate the temperature change rate of the coolant and determine whether the temperature change state of the coolant is a temperature increase state; if yes, jump to S4; if no, jump to S5;

[0038] S4: Determine whether the temperature change rate of the coolant is greater than the corresponding temperature rise fault threshold; if yes, reduce the power as a temperature adjustment strategy; if no, control the heat pump to continue working;

[0039] S5: Determine whether the temperature change rate of the coolant is greater than the temperature drop fault threshold; if yes, perform a temperature drop protection detection based on the temperature drop protection signal; if no, increase the heat pump power as a temperature adjustment strategy.

[0040] Preferably, the temperature drop protection detection based on the temperature drop protection signal includes:

[0041] Detect temperature drop protection signal;

[0042] Determine whether a temperature drop protection signal is generated; if yes, restart the PTC heater for heating; if no, increase the heat pump power as a temperature adjustment strategy.

[0043] Preferably, the method of calculating the fault threshold corresponding to the temperature change state by combining the temperature change state, the coolant data and the heat pump power includes:

[0044] Extracting coolant data, temperature change state and heat pump power; wherein the coolant data includes coolant density, volume flow rate and specific heat capacity;

[0045] Set the temperature drop fault coefficient β and the temperature rise fault coefficient α; calculate the temperature rise fault threshold SWL by the formula SWL=GLP / (MD×TJL×c×α)×60; calculate the temperature drop fault threshold JWL by the formula JWL=GLP / (MD×TJL×c)×60×β; where GLP represents the heat pump power, MD represents the coolant density, TJL represents the volume flow rate of the coolant, and c represents the specific heat capacity of the coolant; where α and β are set according to the degree of influence of different temperature change states on the temperature control unit;

[0046] The fault threshold is obtained by integrating the temperature increase fault threshold and the temperature decrease fault threshold.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. The present invention obtains real-time environmental data and equipment data by real-time monitoring of the environment of the temperature control unit, sets a temperature control start range, matches the ambient temperature with the temperature control start range to obtain a corresponding environmental state, sets a pre-temperature control mode of the temperature control unit based on the environmental state, and automatically selects the most suitable pre-temperature control mode according to different environmental states, thereby reducing unnecessary energy waste. In an environment with a relatively low temperature, the heat pump has less effect on heating the coolant. After being combined with the heater, the heating performance of the temperature control unit is stronger and the heating efficiency is improved. The real-time environmental data after startup is marked as temperature control environmental data, a switching threshold is set according to the target coolant temperature, and the temperature control unit is dynamically adjusted in combination with the temperature control environmental data, the pre-temperature control mode and the switching threshold to obtain adjustment equipment data, monitors the temperature change state of the coolant in real time, and adjusts the temperature of the temperature control unit in combination with the temperature change state and the adjustment equipment data, and automatically adjusts the temperature control strategy to ensure that optimal performance can be achieved under different conditions, thereby reducing unnecessary energy consumption and improving the energy efficiency of the system. The system can quickly take measures to avoid damage to the equipment caused by sudden temperature changes, thereby ensuring the normal operation of the system.

[0049] 2. The present invention extracts the heater efficiency and heat pump efficiency of the PTC heater in the temperature control unit from the equipment database, sets the target coolant temperature, calculates the temperature difference between the target coolant temperature and the initial temperature, and calculates the switching threshold by combining the temperature difference, the heater efficiency and the heat pump efficiency. The switching of the heater and the heat pump in the temperature control unit is controlled by the switching threshold, so that the system can be adjusted in a targeted manner to ensure that the ideal temperature state is finally reached and that the coolant temperature always remains in the target range and continues to rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 The following is a flowchart of an embodiment of the present invention.

[0052] Figure 2 The figure is a complete flow chart for obtaining the environment status in one embodiment of the present invention.

[0053] Figure 3 A complete flow chart of obtaining a temperature adjustment strategy in one embodiment of the present invention. DETAILED DESCRIPTION

[0054] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] See also Figure 1-Figure 3 The first aspect of the present invention provides a method for controlling a temperature control unit, comprising:

[0056] Step 1: Conduct real-time detection of the unit environment to collect real-time environmental data, and collect equipment data of the temperature control unit equipment in real time.

[0057] Exemplarily, multiple temperature sensors are arranged in the temperature control unit room to collect the ambient temperature, and the temperature of the coolant in the cooling system in the unit is collected through an infrared sensor; the start-up status of the PTC heater and the heat pump in the temperature control unit is extracted in the equipment management system.

[0058] Step 2: Set the pre-temperature control mode of the temperature control unit based on real-time environmental data.

[0059] Exemplarily, in this embodiment, the extremely low temperature range is below -10 degrees, the preheating temperature range is [-10 degrees, 10 degrees], and the heating temperature range is above 10 degrees; the ambient temperature is matched with the temperature control start range. In this embodiment, the ambient temperature before heating starts is 5 degrees, and the corresponding environmental state is the preheating state.

[0060] In some other preferred embodiments, if the ambient temperature meets the extremely low temperature range, the corresponding ambient state will be marked as an extremely low temperature state; if the ambient temperature meets the heating temperature range, the corresponding ambient state will be marked as an abnormal state; if the ambient temperature does not meet all temperature control start ranges, it means that the ambient temperature is currently in a state that does not require heating.

[0061] In this embodiment, the unit time is set to 1 minute; the coolant temperature is detected in real time, and when the coolant temperature is detected to drop, the temperature change rate of the coolant is calculated; in this embodiment, the temperature drop protection threshold is set to 5 degrees Celsius per minute, and the temperature change rate is compared with the temperature drop protection threshold to determine whether the temperature change rate is greater than the temperature drop protection rate. In this embodiment, when the coolant temperature drops, the coolant temperature change rate is 6 degrees Celsius per minute, then the temperature change rate is greater than the temperature drop protection threshold, indicating that the coolant temperature change rate is too fast, then a temperature drop protection signal is generated, and the PTC heater and the heat pump are started at the same time to obtain a temperature drop protection state; the target coolant temperature in this embodiment is 30 degrees.

[0062] During preheating, if the temperature of the coolant is low, the efficiency of the heat pump will be relatively low, and heating will be performed through the PTC heater. When the temperature rises, the efficiency of the heat pump gradually increases, then the heater power can be reduced, and the preheating task can be completed through the heat pump; and the temperature of the coolant will also be different. At low temperatures, the efficiency of the heat pump is low, so it mainly relies on the PTC heater for heating. If the temperature of the coolant is higher than the low temperature, the efficiency of the heat pump is higher than that in the low temperature environment, and its heating effect can also assist in completing the preheating task and increase the temperature of the coolant faster. In this embodiment, the extreme temperature threshold at which the PTC heater starts to reduce the power is set to 24 degrees, and it is judged whether the ambient temperature during preheating is greater than the extreme temperature threshold. If the ambient temperature is less than the extreme temperature threshold, it means The coolant is currently in a low temperature environment in the preheating stage, and the PTC heater needs to run at full power. However, the efficiency of the heat pump is low and it is temporarily not started, and the corresponding pre-temperature control mode is marked as a single-start preheating mode; if the ambient temperature is greater than the extreme temperature threshold, it means that the coolant is currently in a higher temperature environment in the preheating stage. At this time, the efficiency of the heat pump can assist the PTC heater in preheating, so the PTC heater and the heat pump are started at the same time, and the corresponding pre-temperature control mode is marked as a dual-start preheating mode; in this embodiment, the ambient temperature is less than the extreme temperature threshold, so the dual-start preheating mode is started; the most suitable pre-temperature control mode is automatically selected according to different environmental conditions, which reduces resource waste, can quickly adapt to environmental changes, maintain internal temperature stability, and improve system reliability.

[0063] The heating state, extremely low temperature state and cooling protection state have corresponding pre-temperature control modes respectively; in the heating state, the efficiency of the heat pump is higher, so heating is carried out through the heat pump and the PTC heater is not started; in the extremely low temperature state, the temperature is relatively low and heating is mainly carried out through the PTC heater, but the heat pump can use the low-temperature heat source for auxiliary heating and start the heat pump at low power; in the cooling protection state, the temperature of the coolant drops rapidly, and the PTC heater and the heat pump are started at the same time until the target coolant temperature is reached, which can minimize energy consumption, improve the overall energy efficiency of the system, and restore the coolant temperature to a safe range in the shortest time to ensure the stability and safety of the system.

[0064] Step 3: After starting the temperature control unit, the real-time environmental data is marked as temperature control environmental data; based on the temperature control environmental data and the pre-temperature control mode, the device data is dynamically adjusted to obtain the adjusted device data.

[0065] Exemplarily, after determining the pre-temperature control mode of the temperature control unit, the temperature control system of the temperature control unit is started, and the real-time environmental data after startup is marked as temperature control environmental data; the environmental state when the temperature control device is started is marked as the initial environmental state. In this embodiment, the target coolant temperature is selected as 30 degrees, and the difference between the target coolant temperature and the initial temperature is marked as the temperature difference value. The heater efficiency of the PTC heater and the heat pump efficiency that increases with temperature are extracted from the equipment database; the switching threshold QHZ is calculated by the formula QHZ=WCZ×[JRT / RBT×(1-lnWCZ)]; when the coolant temperature reaches the switching threshold, the PTC heater is stopped, the heat pump is started to work, and the coolant temperature after reaching the switching threshold is marked as the adjustment temperature; the switching threshold, the adjustment temperature of the coolant after reaching the switching threshold, and the corresponding adjustment time are integrated and marked as adjustment equipment data.

[0066] In some other preferred embodiments, when the pre-temperature control mode of the temperature control unit is the dual-start temperature control mode, when the coolant temperature reaches the switching threshold, the power of the PTC heater is controlled to start decreasing and the heat pump continues to work.

[0067] Step 4: Control the temperature control unit by adjusting the equipment data to complete the temperature adjustment.

[0068] Exemplarily, the adjustment temperature of the coolant and the temperature drop protection signal are monitored in real time. When the temperature drop protection signal is detected, the heat pump is working at this time, and the PTC heater is started to reheat the coolant.

[0069] Detect the temperature change state of the coolant and calculate the temperature change rate of the coolant; in this embodiment, the cooling fault coefficient is set to 1, and the heating fault coefficient is set to 2, the density, volume flow rate and specific heat capacity of the coolant are extracted from the database, and the power of the heat pump is extracted, and the heating fault threshold SWL is calculated by the formula SWL=GLP / (MD×TJL×c×α)×60; the cooling fault threshold JWL is calculated by the formula JWL=GLP / (MD×TJL×c)×60×β; it is calculated that the cooling fault threshold is set to 1.2 degrees per minute and the heating fault threshold is set to 3.5 degrees per minute in this embodiment; it is detected that the temperature change state of the coolant is a heating change state, and the temperature change rate of the coolant is 3 degrees per minute, it is judged that the temperature change rate of the coolant is normal, and the fault state of the temperature unit is marked as no fault.

[0070] In some other preferred embodiments, if the temperature change rate of the coolant in the temperature change state of the rising temperature change state is greater than the temperature rise fault threshold, it means that the temperature change of the coolant is abnormal at this time, and the heat pump power should be reduced; if the temperature change rate of the coolant in the temperature change state of the cooling temperature change state is greater than the cooling fault threshold, it means that the coolant is not only not continuing to heat up, but is cooling down. At this time, the heat pump power should be increased; if the temperature change rate of the coolant in the cooling temperature change state reaches the cooling protection threshold, it means that the temperature of the coolant cannot be continuously increased by relying solely on the action of the heat pump, a cooling protection signal is generated, and the PTC heater is restarted for heating.

[0071] Part of the data in the above formula is calculated by removing the dimension and taking its numerical value. The formula is a formula closest to the actual situation obtained by software simulation of a large amount of collected data; the preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained through simulation of a large amount of data.

[0072] Working principle of the present invention:

[0073] The present invention obtains real-time environmental data and equipment data by real-time monitoring of the environment of the temperature control unit, sets a temperature control start-up range, matches the ambient temperature with the temperature control start-up range to obtain a corresponding environmental state, sets a pre-temperature control mode of the temperature control unit based on the environmental state, extracts the heater efficiency and the heat pump efficiency of the PTC heater in the temperature control unit from the equipment database, sets a target coolant temperature, calculates the temperature difference between the target coolant temperature and the initial temperature, calculates a switching threshold value by combining the temperature difference value, the heater efficiency and the heat pump efficiency, and controls the switching of the heater and the heat pump in the temperature control unit by the switching threshold value; marks the real-time environmental data after startup as temperature control environmental data, sets the switching threshold value according to the target coolant temperature, and dynamically adjusts the temperature control unit by combining the temperature control environmental data, the pre-temperature control mode and the switching threshold value to obtain adjustment equipment data, monitors the temperature change state of the coolant in real time, and adjusts the temperature of the temperature control unit by combining the temperature change state and the adjustment equipment data.

[0074] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A control method for a temperature control unit, characterized in that: include: Step 1: Conduct real-time detection of the unit environment to collect real-time environmental data, and collect equipment data of the temperature control unit equipment in real time; Step 2: Set the pre-temperature control mode of the temperature control unit based on real-time environmental data; Step 3: After starting the temperature control unit, mark the real-time environmental data as temperature control environmental data; Dynamically adjust the device data based on the temperature control environment data and the pre-temperature control mode to obtain the adjusted device data; Step 4: Control the temperature control unit by adjusting the equipment data to complete the temperature adjustment.

2. A control method for a temperature control unit according to claim 1, characterized in that: The method of setting the pre-temperature control mode of the temperature control unit based on real-time environmental data includes: Extracting real-time environmental data; wherein the real-time environmental data includes the ambient temperature of the unit, the coolant temperature and the corresponding temperature time; Set several groups of temperature control start ranges; match the ambient temperature with the temperature control start range to obtain the corresponding ambient state; analyze the ambient temperature in combination with the coolant temperature and temperature time to detect the cooling protection state; set the pre-temperature control mode of the PTC heater and the heat pump according to the ambient state and the cooling protection state.

3. The control method of a temperature control unit according to claim 2, characterized in that: The step of matching the ambient temperature with the temperature control start range to obtain a corresponding ambient state includes: A1: Extract the ambient temperature and the temperature control start range; the temperature control start range includes the preheating temperature range, the heating temperature range and the extremely low temperature range; A2: Determine whether the ambient temperature meets the extremely low temperature range; if yes, mark the ambient state of the temperature control unit as extremely low temperature; if no, jump to A3; A3: Determine whether the ambient temperature meets the preheating temperature range; if yes, mark the corresponding ambient state as preheating state; if no, jump to A4; A4: Determine whether the ambient temperature meets the heating temperature range; if yes, mark the corresponding ambient state as heating state; if no, detect the abnormal state of the ambient temperature.

4. The control method of a temperature control unit according to claim 2, characterized in that: The combining of the coolant temperature and the temperature time to analyze the ambient temperature and detect the cooling protection state includes: Check the coolant temperature of the coolant; Divide the unit time, calculate the temperature change rate of the coolant temperature within the unit time; set the temperature drop protection threshold; determine whether the temperature change rate is greater than the temperature drop protection threshold; if so, generate a temperature drop protection signal, start the PTC heater and the heat pump at the same time, and integrate the start-up state of the PTC heater with the start-up state of the heat pump to obtain the temperature drop protection state; if not, continue to monitor the coolant temperature of the coolant; wherein, the temperature drop protection threshold is set according to the normal temperature drop rate of the coolant.

5. The control method of a temperature control unit according to claim 2, characterized in that: The pre-temperature control mode of the PTC heater and the heat pump is set according to the environmental state and the temperature reduction protection state, including: Extract environmental status and cooling protection status; When the environment state is in the preheating state, set the extreme temperature threshold; determine whether the environment temperature is greater than the extreme temperature threshold; if yes, mark the pre-temperature control mode corresponding to the preheating state as the dual-start preheating mode; if no, mark the pre-temperature control mode corresponding to the preheating state as the single-start preheating mode; wherein the extreme temperature threshold is set by the staff according to the heat pump efficiency; The pre-temperature control mode corresponding to the heating state is marked as the heating mode, and the pre-temperature control mode corresponding to the extremely low temperature state is marked as the extremely low temperature mode; when the cooling protection state is detected, the pre-temperature control mode corresponding to the cooling protection state is marked as the cooling protection mode.

6. The control method of a temperature control unit according to claim 1, characterized in that: The dynamically adjusting the device data based on the temperature control environment data and the pre-temperature control mode to obtain the adjusted device data includes: Monitor temperature control environment data in real time and extract pre-temperature control mode of temperature control equipment; The environmental state when the temperature control device is started is marked as the initial environmental state, and the target coolant temperature is selected; a switching threshold is set based on the initial temperature and the target coolant temperature; and the coolant temperature after heating starts is marked as the heating temperature; Determine whether the pre-temperature control mode of the temperature control device is the dual-start preheating mode; if yes, apply the switching threshold to the operating state of the control device in the dual-start preheating mode, and when the coolant temperature reaches the switching threshold, integrate the switching threshold, the adjustment temperature of the coolant after reaching the switching threshold, and the corresponding adjustment time as adjustment device data; if no, enable the corresponding pre-temperature control mode for heating.

7. A control method for a temperature control unit according to claim 6, characterized in that: The step of setting the switching threshold based on the initial temperature and the target coolant temperature includes: Extract initial temperature and target coolant temperature; Extract the heater efficiency of the PTC heater and the heat pump efficiency that increases with temperature from the equipment database, and calculate the temperature difference between the initial temperature and the target coolant temperature; The switching threshold QHZ is calculated by the formula QHZ=WCZ×[JRT / RBT×(1-lnWCZ)]; wherein WCZ represents the temperature difference, JRT represents the heat pump efficiency of the heater, and RBT represents the heat pump efficiency of the heat pump.

8. The control method of a temperature control unit according to claim 1, characterized in that: The temperature control unit is controlled by adjusting the device data to complete the temperature adjustment, including: S1: extracting coolant data from the database; and extracting the heat pump power and adjustment equipment data of the heat pump at this time; S2: Detect the temperature change state of the coolant, and calculate the fault threshold corresponding to the temperature change state by combining the temperature change state, coolant data and heat pump power; wherein the temperature change state includes a temperature increase change state and a temperature decrease change state; S3: Calculate the temperature change rate of the coolant and determine whether the temperature change state of the coolant is a temperature increase state; if yes, jump to S4; if no, jump to S5; S4: Determine whether the temperature change rate of the coolant is greater than the corresponding temperature rise fault threshold; if yes, reduce the power as a temperature adjustment strategy; if no, control the heat pump to continue working; S5: Determine whether the temperature change rate of the coolant is greater than the temperature drop fault threshold; if yes, perform a temperature drop protection detection based on the temperature drop protection signal; if no, increase the heat pump power as a temperature adjustment strategy.

9. A control method for a temperature control unit according to claim 8, characterized in that: The performing of temperature drop protection detection based on the temperature drop protection signal includes: Detect temperature drop protection signal; Determine whether a temperature drop protection signal is generated; if yes, restart the PTC heater for heating; if no, increase the heat pump power as a temperature adjustment strategy.

10. The control method of a temperature control unit according to claim 8, characterized in that: The method of calculating the fault threshold corresponding to the temperature change state by combining the temperature change state, the coolant data and the heat pump power includes: Extracting coolant data, temperature change state and heat pump power; wherein the coolant data includes coolant density, volume flow rate and specific heat capacity; Set the temperature drop fault coefficient β and the temperature rise fault coefficient α; calculate the temperature rise fault threshold SWL by the formula SWL=GLP / (MD×TJL×c×α)×60; calculate the temperature drop fault threshold JWL by the formula JWL=GLP / (MD×TJL×c)×60×β; where GLP represents the heat pump power, MD represents the coolant density, TJL represents the volume flow rate of the coolant, and c represents the specific heat capacity of the coolant; where α and β are set according to the degree of influence of different temperature change states on the temperature control unit; The fault threshold is obtained by integrating the temperature increase fault threshold and the temperature decrease fault threshold.

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