Method, control device and processor for controlling an electric oil heater

Abstract

The application provides a control method, a control device and a processor of an electric oil heater. The method comprises the following steps: obtaining a first ambient temperature and a second ambient temperature, the first ambient temperature being an ambient temperature of a current period, and the second ambient temperature being an ambient temperature of a previous period of the current period; determining a temperature change condition between the current period and the previous period according to the first ambient temperature and the second ambient temperature; determining a target gear of the electric oil heater according to the temperature change condition, the first ambient temperature and a preset relationship, wherein the preset relationship comprises a corresponding relationship among the temperature change condition, the first ambient temperature and the target gear; and controlling the electric oil heater to operate at the target gear. The application solves the problem of the space environment being cold and hot alternately in the electric oil heater gear adjustment process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric oil heater, in particular to a control method and control device of electric oil heater, computer readable storage medium and processor. BACKGROUND

[0002] Electric oil heater is widely used in home heating. Compared with other types of electric heaters, electric oil heater has the advantages of large heat dissipation, maintaining a certain temperature for a long time even in the case of sudden power failure, not producing any harmful gases, no electric appliance operation noise and many other advantages, so it is popular with consumers.

[0003] The operation process of electric oil heater can be simply described as follows: the internal electric heating tube is powered to heat, the heat dissipated by the electric heating tube heats the surrounding heat-conducting oil, the heat rises to the upper part of the cavity along with the heat-conducting oil, circulates along the heat dissipation pipe and heat dissipation fin, and finally radiates heat through the cavity wall surface to heat the space environment. The control method of electric oil heater on the heating environment temperature on the market is generally to detect the environment temperature by temperature sensing bag, start heating when the detected environment temperature is lower than the preset temperature, and control the electric heating tube to stop heating when the detected environment temperature is the same as the preset temperature.

[0004] Because the heat of the electric oil heater for heating the environment needs to be transmitted through three levels of electric heating tube, heat-conducting oil and oil heater body, and a certain time is needed between each level of transmission, the control of the environment temperature is delayed. SUMMARY

[0005] The main purpose of the present application is to provide a control method and control device of electric oil heater, computer readable storage medium and processor, so as to at least solve the problem that the space environment is cold and hot during the gear adjustment process of the electric oil heater in the prior art, affecting the user experience.

[0006] In order to achieve the above purpose, according to one aspect of the present application, a control method of electric oil heater is provided, comprising: acquiring a first ring temperature and a second ring temperature, the first ring temperature being the environment temperature of a current period, and the second ring temperature being the environment temperature of a previous period of the current period; determining the temperature change between the current period and the previous period according to the first ring temperature and the second ring temperature; determining the target gear of the electric oil heater according to the temperature change, the first ring temperature and a preset relationship, wherein the preset relationship includes the corresponding relationship between the temperature change, the first ring temperature and the target gear; controlling the electric oil heater to operate at the target gear.

[0007] Optionally, the temperature change between the current period and the previous period is determined according to the first ring temperature and the second ring temperature, including: determining that the corresponding temperature level is the first level according to the first ring temperature, wherein the temperature level is divided according to a preset temperature; determining that the corresponding temperature level is the second level according to the second ring temperature; determining that the difference between the first level and the second level is a level difference, and obtaining the temperature change.

[0008] Optionally, the target gear of the electric oil heater is determined according to the temperature change, the first ring temperature and a preset relationship, including: in the case that the first ring temperature is equal to the preset temperature and the level difference is 0, determining the target gear to be the gear of the electric oil heater corresponding to the previous period according to the preset relationship; in the case that the first ring temperature is equal to the preset temperature and the level difference is greater than or equal to a first threshold value, determining the target gear to be a first gear according to the preset relationship; in the case that the first ring temperature is equal to the preset temperature and the level difference is less than or equal to a second threshold value, determining the target gear to be a second gear according to the preset relationship, wherein the first gear is less than the second gear, and the first threshold value is greater than the second threshold value.

[0009] Optionally, the target gear of the electric oil heater is determined according to the temperature change, the first ring temperature and a preset relationship, including: in the case that the first ring temperature is less than the preset temperature and the level difference is greater than a third threshold value, determining the target gear to be a third gear according to the preset relationship; in the case that the first ring temperature is less than the preset temperature and the level difference is less than or equal to the third threshold value, determining the target gear to be a fourth gear according to the preset relationship, wherein the fourth gear is greater than the third gear.

[0010] Optionally, the target gear of the electric oil heater is determined according to the temperature change, the first ring temperature and a preset relationship, including: in the case that the first ring temperature is greater than the preset temperature and the level difference is greater than or equal to a fourth threshold value, determining the target gear to be a fifth gear according to the preset relationship; in the case that the first ring temperature is greater than the preset temperature and the level difference is less than the fourth threshold value, determining the target gear to be a sixth gear according to the preset relationship, wherein the sixth gear is greater than the fifth gear.

[0011] Optionally, the temperature change between the current time period and the previous time period is determined according to the first ring temperature and the second ring temperature, including: calculating a difference between the first ring temperature and the second ring temperature as a temperature difference according to the first ring temperature and the second ring temperature; determining a quotient of the temperature difference and a time length difference as a temperature change rate, to obtain the temperature change, the time length difference being an interval between the current time period and the previous time period.

[0012] Optionally, the target gear of the electric oil heater is determined according to the temperature change, the first ring temperature and a preset relationship, including: in a case that the first ring temperature is greater than the preset temperature and the temperature change rate is greater than or equal to a fourth threshold value, determining a corresponding target gear as a seventh gear according to the preset relationship, and the greater the temperature change rate, the smaller the corresponding seventh gear; in a case that the first ring temperature is greater than the preset temperature and the temperature change rate is less than the fourth threshold value, determining a corresponding target gear as an eighth gear according to the preset relationship, and the smaller the temperature change rate, the greater the eighth gear; in a case that the first ring temperature is less than the preset temperature and the temperature change rate is greater than a third threshold value, determining a corresponding target gear as a ninth gear according to the preset relationship, and the greater the temperature change rate, the smaller the corresponding ninth gear; in a case that the first ring temperature is less than the preset temperature and the temperature change rate is less than or equal to the third threshold value, determining a corresponding target gear as a tenth gear according to the preset relationship, and the smaller the temperature change rate, the greater the corresponding tenth gear, and a maximum power value corresponding to the tenth gear, a maximum power value corresponding to the ninth gear, a maximum power value corresponding to the eighth gear and a maximum power value corresponding to the seventh gear decrease in turn.

[0013] Optionally, the target gear of the electric oil heater is determined according to the temperature change, the first ring temperature and a preset relationship, including: in a case that the first ring temperature is equal to the preset temperature and the temperature change rate is 0, determining the target gear as a gear of the electric oil heater corresponding to the previous time period according to the preset relationship; in a case that the first ring temperature is equal to the preset temperature and the temperature change rate is greater than a third threshold value, determining the target gear as an eleventh gear according to the preset relationship; in a case that the first ring temperature is equal to the preset temperature and the temperature change rate is less than the fourth threshold value, determining the target gear as a twelfth gear according to the preset relationship, wherein the eleventh gear is less than the twelfth gear.

[0014] According to another aspect of the present application, a control device of an electric oil heater is provided, comprising: an acquisition unit configured to acquire a first ambient temperature and a second ambient temperature, the first ambient temperature being an ambient temperature of a current time period, and the second ambient temperature being an ambient temperature of a previous time period of the current time period; a first determination unit configured to determine a temperature change condition between the current time period and the previous time period according to the first ambient temperature and the second ambient temperature; a second determination unit configured to determine a target gear of the electric oil heater according to the temperature change condition, the first ambient temperature, and a preset relationship, wherein the preset relationship comprises a corresponding relationship among the temperature change condition, the first ambient temperature, and the target gear; and a control unit configured to control the electric oil heater to operate at the target gear.

[0015] According to still another aspect of the present application, a computer readable storage medium is provided, comprising a stored program, wherein the computer readable storage medium performs any of the methods when the program is executed.

[0016] According to yet another aspect of the present application, a processor is provided, wherein the processor is configured to execute a program, and the processor performs any of the methods when the program is executed.

[0017] According to another aspect of the present application, an electric oil heater system is also provided, comprising: an electric oil heater; and a controller of the electric oil heater, comprising one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs comprise a program for performing any of the methods.

[0018] The technical solution of the application first acquires a first ring temperature representing the ambient temperature of a current period and a second ring temperature representing the ambient temperature of a previous period; then determines the temperature change of the two periods according to the first ring temperature and the second ring temperature; then determines the target gear of the electric oil heater corresponding to the temperature change, the first ring temperature and a preset relationship, wherein the preset relationship includes the corresponding relationship between the temperature change, the first ring temperature and the target gear, and the heating power corresponding to different gears is also different; finally, the electric oil heater is controlled to run at the target gear in the current period to heat the space environment where the electric oil heater is located, so that the temperature of the space environment is basically maintained at a preset temperature. Compared with the prior art which only adjusts the working gear of the electric oil heater according to the size relationship between the current ambient temperature and the preset temperature, due to the delay of temperature transmission in the electric oil heater, the space environment temperature difference changes greatly during the electric oil heater gear adjustment process, thereby affecting the user experience. The application fully considers the delay time of multi-stage transmission of the electric oil heater. In addition to the ambient temperature of the current period, the gear change of the electric oil heater is also controlled according to the ambient temperature change in the continuous period. In this way, the ambient temperature during the electric oil heater gear adjustment process can be stably adjusted to the preset temperature, effectively alleviating the problem of hot and cold space environment during the electric oil heater gear adjustment, and ensuring good user experience. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application, and do not constitute any improper limitation to the present application. In the drawings:

[0020] Figure 1 A hardware structure block diagram of a mobile terminal for executing a control method of an electric oil heater is shown according to an embodiment of the present application;

[0021] Figure 2 A flowchart of a control method of an electric oil heater is shown according to an embodiment of the present application;

[0022] Figure 3 A control flowchart of an electric oil heater is shown according to an embodiment of the present application;

[0023] Figure 4 A structure block diagram of a control device of an electric oil heater is shown according to an embodiment of the present application.

[0024] Among the above drawings, the following reference signs are included:

[0025] 102, processor; 104, memory; 106, transmission device; 108, input / output device. DETAILED DESCRIPTION

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] As described in the background section, the ambient temperature fluctuates during the adjustment of the oil heater settings in the prior art, affecting the user experience. To address this issue, embodiments of this application provide a control method, control device, computer-readable storage medium, and processor for an oil heater.

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a control method of an electric oil heater according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1The illustrated structure is merely schematic and does not limit the structure of the mobile terminal. For example, the mobile terminal can further include more or less components than those shown, or have a different configuration or arrangement of the components. Figure 1 The mobile terminal can include more or less components than those shown, or have a different configuration or arrangement of the components. Figure 1 The mobile terminal can include more or less components than those shown, or have a different configuration or arrangement of the components.

[0032] The memory 104 is operable to store a computer program, such as a software program for an application and modules, e.g., a computer program of the method for displaying device information according to an embodiment of the present application. The processor 102 is operable to execute various functional applications and data processing, i.e., the method, by running the computer program stored in the memory 104. The memory 104 can include a high-speed random access memory, and can further include a nonvolatile memory, such as one or more magnetic storage devices, flash memories, or other nonvolatile solid-state memories. In some examples, the memory 104 can further include a memory remotely located with respect to the processor 102, which can be connected to the mobile terminal through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is operable to receive or transmit data via a network. A specific example of the network can include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (NIC), which can be connected to other network devices through a base station so as to be able to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is operable to communicate with the Internet in a wireless manner.

[0033] In the present embodiment, a control method of an electric oil heater operated in a mobile terminal, a computer terminal, or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown.

[0034] Specifically, the temperature delay principle of the electric oil heater is that when the ambient temperature rises to the preset temperature, the electric heating tube stops heating, but at this time, the electric heating tube, the heat conducting oil and the oil heater body are still in a high temperature state, continuously dissipating heat outward, eventually resulting in that the ambient temperature is significantly higher than the preset temperature; when the heating efficiency of the electric oil heater is lower than the natural decay of the ambient temperature, the ambient temperature begins to drop, and the ambient temperature drops below the preset temperature, and the electric oil heater starts to heat again, but at this time, the temperature of the whole electric oil heater has dropped, and it needs to go through the delay of three-level transmission of the electric heating tube, the heat conducting oil and the oil heater body to rise the temperature again, and in this process, the ambient temperature will drop significantly below the preset temperature. At the same time, since the temperature sensing bag is located inside the electric oil heater, the detection of the temperature of the external environment also has a certain delay, and the two are superimposed to lengthen the delay time of the electric oil heater in controlling the ambient temperature, and aggravate the phenomenon of hot and cold in the space environment.

[0035] Figure 2 is a flow chart of a control method of the electric oil heater according to an embodiment of the present application. As shown in Figure 2 the method comprises the following steps:

[0036] Step S201, acquiring a first ring temperature and a second ring temperature, the first ring temperature being an ambient temperature of a current period, and the second ring temperature being an ambient temperature of a previous period of the current period;

[0037] Specifically, the current period and the previous period are consecutive time periods. The first ring temperature and the second ring temperature are measured by a temperature sensing bag arranged in the electric oil heater. Of course, the first ring temperature and the second ring temperature can also be measured by a temperature sensor arranged in the space environment to be measured, and the first ring temperature and the second ring temperature are acquired by communicating with the temperature sensor.

[0038] Step S202, determining a temperature change condition between the current period and the previous period according to the first ring temperature and the second ring temperature;

[0039] Specifically, the temperature change condition can include any temperature change between the current period and the previous period, such as a temperature difference, a temperature change rate, or a difference between a temperature grade corresponding to the first ring temperature and a temperature grade corresponding to the second ring temperature.

[0040] Step S203, determining a target gear of the electric oil heater according to the temperature change condition, the first ring temperature and a preset relationship, wherein the preset relationship includes a corresponding relationship among the temperature change condition, the first ring temperature and the target gear;

[0041] Specifically, the preset relationship can be set according to an empirical value, or can be obtained according to multiple experimental tests. The preset relationship includes a corresponding relationship among multiple historical temperature change conditions, historical first ring temperatures and historical gears. The larger the target gear is, the greater the heating power of the electric oil heater is.

[0042] Step S204, control the electric oil heater to run at the target gear.

[0043] Specifically, the preset temperature is a preset expected temperature of the space environment where the electric oil heater is located. By controlling the electric oil heater to run at the target gear, the electric oil heater heats the corresponding environment, so that the difference between the temperature of the heated environment and the preset temperature is within the preset range.

[0044] By way of example, first, a first ring temperature representing the temperature of the current period and a second ring temperature representing the temperature of the previous period are obtained; then, according to the first ring temperature and the second ring temperature, the temperature change of the two periods is determined; then, according to the temperature change, the first ring temperature and a preset relationship, the target gear of the corresponding electric oil heater is determined, wherein the preset relationship includes the corresponding relationship between the temperature change, the first ring temperature and the target gear, and the heating power corresponding to different gears is also different; finally, the electric oil heater is controlled to run at the target gear in the current period to heat the space environment where the electric oil heater is located, so that the temperature of the space environment is basically maintained at the preset temperature. Compared with the prior art, which only adjusts the working gear of the electric oil heater according to the size relationship between the current environment temperature and the preset temperature, due to the delay of temperature transmission in the electric oil heater, the space environment temperature difference changes greatly during the adjustment process of the electric oil heater gear, thereby affecting the user experience. The present application fully considers the delay time of multi-stage transmission of the electric oil heater. In addition to the current period of the environment temperature, the gear change of the electric oil heater is also controlled according to the temperature change of the environment in the continuous period. This can make the environment temperature stable during the adjustment process of the electric oil heater gear, effectively alleviate the problem of the space environment being hot and cold during the adjustment of the electric oil heater gear, and ensure good user experience.

[0045] The person skilled in the art can flexibly select the parameter representing the temperature change according to actual needs. In an optional solution, according to the first ring temperature and the second ring temperature, the temperature change between the current period and the previous period is determined, including: according to the first ring temperature, the corresponding temperature grade is determined to be the first grade, wherein the temperature grade is divided according to the preset temperature; according to the second ring temperature, the corresponding temperature grade is determined to be the second grade; the difference between the first grade and the second grade is determined as the grade difference, and the temperature change is obtained. In the embodiment, the difference between the temperature grade corresponding to the first ring temperature and the temperature grade corresponding to the second ring temperature is used to represent the temperature change, which can accurately and clearly reflect the temperature change of the two periods, facilitating the subsequent determination of the target gear corresponding to the current period according to the grade difference. By controlling the electric oil heater to run at the target gear to adjust the environment temperature, the environment temperature is stable to the preset temperature, thereby further ensuring the stability of the space environment.

[0046] Specifically, the target gear of the electric oil heater is determined according to the temperature change, the first ring temperature and a preset relationship, including the following specific steps:

[0047] Step S2031: in the case that the first ring temperature is equal to the preset temperature and the grade difference is 0, the target gear is determined as the gear of the electric oil heater corresponding to the previous time period according to the preset relationship;

[0048] Specifically, the grade difference of 0 indicates that the current time period and the previous time period are in the same temperature grade. In the case that the first ring temperature is equal to the preset temperature and the grade difference is 0, it indicates that the ambient temperature is the same as the preset temperature in the continuous time period, and the heating efficiency is equal to the natural attenuation of the ambient temperature in the continuous time period. At this time, the electric oil heater is controlled to maintain the current gear, enters the temperature maintaining state, and keeps the ambient temperature.

[0049] Step S2032: in the case that the first ring temperature is equal to the preset temperature and the grade difference is greater than or equal to the first threshold value, the target gear is determined as the first gear according to the preset relationship;

[0050] Specifically, the first threshold value can be 1, and the grade difference greater than or equal to 1, that is, the ambient temperature of the current time period is 1 grade or more than 1 grade higher than that of the previous time period, such as the ambient temperature in the continuous time period rising from -1 grade or -2 grade to 0 grade. In the case that the first ring temperature is equal to the preset temperature and the grade difference is greater than or equal to the first threshold value, it indicates that the heating efficiency is greater than the natural attenuation of the ambient temperature in the continuous time period. At this time, the electric oil heater is controlled to heat at a lower first gear, and the overall temperature of the electric oil heater has not decreased yet. The heating efficiency of the superposition of the two is similar to the natural attenuation of the ambient temperature, enters the temperature maintaining state, prevents the excess heat from overflowing the preset temperature above which the ambient temperature continues to rise, and achieves the effect of keeping the ambient temperature. Of course, the first threshold value is not limited to the above-mentioned value 1, but can also be other values.

[0051] Step S2033: in the case that the first ring temperature is equal to the preset temperature and the grade difference is less than or equal to the second threshold value, the target gear is determined as the second gear according to the preset relationship, wherein the first gear is less than the second gear, and the first threshold value is greater than the second threshold value.

[0052] Specifically, the second threshold value can be -1, and the grade difference less than or equal to -1 indicates that the environment temperature of the current period is 1 grade or more than 1 grade lower than the environment temperature of the previous period, such as the environment temperature being decreased from 1 grade or 2 grades to 0 grade in the continuous time period. In the case that the first ring temperature is equal to the preset temperature and the grade difference is less than or equal to the second threshold value, it indicates that the heating efficiency is lower than the natural attenuation of the environment temperature in the continuous time period, and the electric oil heater is controlled to generate heat at the second gear larger than the first gear to improve the heating efficiency, prevent the environment temperature from continuously decreasing below the preset temperature, and enter the temperature maintaining state to maintain the environment temperature. Of course, the second threshold value is not limited to the above-mentioned value -1, and can be other values.

[0053] Further, according to the temperature change condition, the first ring temperature, and the preset relationship, the target gear of the electric oil heater can also include the following process:

[0054] Step S2034: In the case that the first ring temperature is less than the preset temperature and the grade difference is greater than the third threshold value, the target gear is determined as the third gear according to the preset relationship.

[0055] Specifically, the third threshold value can be 0, and the grade difference greater than 0 indicates that the environment temperature of the current period is 1 grade or more than 1 grade higher than the environment temperature of the previous period, such as the environment temperature being increased from -2 grade to -1 grade in the continuous time period. In the case that the first ring temperature is less than the preset temperature and the grade difference is greater than the third threshold value, it indicates that the heating efficiency is greater than the natural attenuation of the environment temperature in the continuous time period, and the electric oil heater is controlled to generate heat at the third gear, and the overall temperature of the oil heater has not decreased, and the superimposed heating efficiency is slightly greater than the natural attenuation of the environment temperature, which enters the transition state and approaches the preset temperature. Of course, the third threshold value is not limited to the above-mentioned value 0, and can be other values.

[0056] Step S2035: In the case that the first ring temperature is less than the preset temperature and the grade difference is less than or equal to the third threshold value, the target gear is determined as the fourth gear according to the preset relationship, wherein the fourth gear is greater than the third gear.

[0057] Specifically, the third threshold value can be 0, and the grade difference less than or equal to 0 indicates that the environment temperature of the current period is at the same temperature grade as the environment temperature of the previous period, or the environment temperature of the current period is 1 grade or more than 1 grade lower than the environment temperature of the previous period. In the case that the first ring temperature is less than the preset temperature and the grade difference is less than or equal to the third threshold value, it indicates that the environment temperature in the continuous time period cannot be increased below the preset temperature, and the heating efficiency is less than or equal to the natural attenuation of the environment temperature in the continuous time period, and the fourth gear greater than the third gear is run to make the heating efficiency of the electric oil heater relatively high, enter the temperature increasing state, and improve the environment temperature to make the environment temperature tend to the preset temperature.

[0058] In another example embodiment, the specific implementation of determining the target gear of the electric oil heater according to the temperature change, the first ring temperature, and the preset relationship can further include:

[0059] Step S2036: In a case where the first ring temperature is greater than the preset temperature and the grade difference is greater than or equal to the fourth threshold value, the target gear is determined as the fifth gear according to the preset relationship.

[0060] Specifically, the fourth threshold value can be 0, and the grade difference greater than or equal to 0 indicates that the ambient temperature of the current period and the ambient temperature of the previous period are in the same temperature grade, or the ambient temperature of the current period is higher than the ambient temperature of the previous period by 1 grade or more. In a case where the first ring temperature is greater than the preset temperature and the grade difference is greater than or equal to the fourth threshold value, it indicates that the ambient temperature in the continuous period is greater than the preset temperature and cannot be reduced, and the heating efficiency in the continuous period is greater than or equal to the natural decay of the ambient temperature. Running the lower fifth gear can make the heating efficiency of the electric oil heater lower, enter the cooling state, and reduce the ambient temperature, so that the ambient temperature tends to the preset temperature. Of course, the fourth threshold value is not limited to the above-mentioned value 0, but can also be other values.

[0061] Step S2037: In a case where the first ring temperature is greater than the preset temperature and the grade difference is less than the fourth threshold value, the target gear is determined as the sixth gear according to the preset relationship, wherein the sixth gear is greater than the fifth gear.

[0062] Specifically, the fourth threshold value can be 0, and the grade difference less than 0 indicates that the ambient temperature of the current period is lower than the ambient temperature of the previous period by 1 grade or more, such as the ambient temperature in the continuous period decreasing from 2 grades to 1 grade. In a case where the first ring temperature is greater than the preset temperature and the grade difference is less than the fourth threshold value, it indicates that the heating efficiency in the continuous period is lower than the natural decay of the ambient temperature. At this time, the electric oil heater is controlled to heat at the sixth gear, the overall temperature of the electric oil heater does not rise, the heating efficiency is slightly lower than the natural decay of the ambient temperature, the ambient temperature is prevented from rapidly decreasing, enters the transition state, and approaches the preset temperature. Of course, the fourth threshold value is not limited to the above-mentioned value 0, but can also be other values.

[0063] In an optional embodiment of the present application, the third gear is greater than the second gear. The fifth gear is less than the first gear, and the sixth gear is equal to the first gear. Further, the present application divides the heating gears of the electric oil heater into five gears according to the heating power of the electric oil heater, wherein the fifth gear is no power, that is, to stop heating; the first gear is 1 / 4 power, the second gear is 1 / 2 power, the third gear is 3 / 4 power, and the fourth gear is full power.

[0064] The gears are not limited to the five gears, and can be divided into six gears, four gears, etc. according to actual needs. The power values corresponding to the gears are not limited to the values, for example, in the case of six gears, the first gear to the sixth gear increase in turn, and correspond to no power, 1 / 5 power, 2 / 5 power, 3 / 5 power, 4 / 5 power and full power in turn. The number of gears and the power values corresponding to the gears are not specifically limited.

[0065] Of course, the target gear of the electric oil heater is not limited to the above manner, and in one embodiment, the preset relationship further includes a corresponding relationship between the temperature change condition, the first ring temperature corresponding temperature level and the target gear. The target gear of the electric oil heater is determined according to the temperature change condition, the first ring temperature and the preset relationship, and includes: determining the corresponding temperature level as the first level according to the first ring temperature; and determining the corresponding target gear according to the first level, the temperature change condition and the preset relationship.

[0066] In actual application, a person skilled in the art can divide different ranges and different numbers of temperature levels according to the preset temperature. According to an exemplary embodiment of the present application, the temperature levels include five levels, namely, -2 level, -1 level, 0 level, 1 level and 2 level. When the temperature is equal to the preset temperature, it indicates that the temperature is at 0 level. The relationship between the levels is as follows: -2 level < preset temperature -1.5℃ ≤ -1 level < preset temperature -0.5℃ ≤ 0 level ≤ preset temperature +0.5℃ < 1 level ≤ preset temperature +1.5℃ < 2 level. Of course, the number of temperature levels is not limited to five, and the size relationship of the temperature levels is not limited to the above size relationship. A person skilled in the art can flexibly set the number of temperature levels and the corresponding temperature ranges according to actual conditions.

[0067] The target gear is determined according to the first level, the temperature change condition and the preset relationship, and can include the following process:

[0068] Step S301: In the case that the first level is equal to 0 level and the level difference is 0, the target gear is determined as the gear of the electric oil heater corresponding to the previous period according to the preset relationship;

[0069] Step S302: In the case that the first level is equal to 0 level and the level difference is greater than or equal to 1, the target gear is determined as the first gear according to the preset relationship;

[0070] Step S303: In the case that the first level is equal to 0 level and the level difference is less than or equal to -1, the target gear is determined as the second gear according to the preset relationship;

[0071] Step S304: In the case that the first level is less than 0 level and the level difference is greater than 0, the target gear is determined as the third gear according to the preset relationship;

[0072] Step S305: In the case that the first level is less than 0 level and the level difference is less than or equal to 0, the target gear is determined as the fourth gear according to a preset relationship.

[0073] Step S306: In the case that the first level is greater than 0 level and the level difference is greater than or equal to 0, the target gear is determined as the zeroth gear according to a preset relationship.

[0074] Step S307: In the case that the first level is greater than 0 level and the level difference is less than 0, the target gear is determined as the first gear according to a preset relationship, wherein the zeroth gear, the first gear, the second gear, the third gear and the fourth gear increase in turn.

[0075] Through the embodiment, the ambient temperature in a continuous time period is detected during the operation of the electric oil heater, the change of the ambient temperature in the continuous time period is compared, when the detected ambient temperature approaches the preset temperature, the increase and decrease of the detected ambient temperature is used to control the increase and decrease of the heating gear of the electric oil heater, so that the heating efficiency of the electric oil heater gradually approaches the natural decay of the ambient temperature, the speed of the ambient temperature tending to the preset temperature is reduced, and a transition state is entered; when the detected ambient temperature in the continuous time period becomes the same as the preset temperature, the increase and decrease of the detected ambient temperature is used to control the increase and decrease of the heating gear of the electric oil heater again, so that the heating efficiency of the electric oil heater is equal to the natural decay of the ambient temperature, and a temperature maintaining state is entered, thereby further solving the problem that the space environment is cold and hot in the electric oil heater gear adjusting process in the prior art, affecting the user experience, further ensuring that the temperature change range of the space environment is small, and further ensuring that the user experience is good.

[0076] In addition to the level difference of the temperature, other parameters can be used to represent the temperature change in the continuous time period, specifically, the temperature change between the current period and the previous period is determined according to the first ring temperature and the second ring temperature, including: calculating the difference between the first ring temperature and the second ring temperature as a temperature difference according to the first ring temperature and the second ring temperature; determining the quotient of the temperature difference and the time difference as the temperature change rate to obtain the temperature change, the time difference is the interval between the current period and the previous period. In the embodiment, the temperature change rate of the first ring temperature and the second ring temperature is used to represent the temperature change, which can accurately and clearly reflect the temperature change of the two periods, facilitating the subsequent accurate determination of the target gear corresponding to the current period according to the temperature change rate, adjusting the ambient temperature by controlling the electric oil heater to operate at the target gear, so that the ambient temperature stably tends to the preset temperature, thereby further ensuring the stability of the space environment.

[0077] Further, the target gear of the electric oil heater is determined according to the temperature change, the first ring temperature and a preset relationship, including: in a case that the first ring temperature is greater than a preset temperature and a temperature change rate is greater than or equal to a fifth threshold, a corresponding target gear is determined as a seventh gear according to the preset relationship, and the greater the temperature change rate, the smaller the corresponding seventh gear; in a case that the first ring temperature is greater than the preset temperature and the temperature change rate is less than the fifth threshold, a corresponding target gear is determined as an eighth gear according to the preset relationship, and the smaller the temperature change rate, the greater the determined eighth gear; in a case that the first ring temperature is less than the preset temperature and the temperature change rate is greater than the fifth threshold, a corresponding target gear is determined as a ninth gear according to the preset relationship, and the greater the temperature change rate, the smaller the corresponding ninth gear; in a case that the first ring temperature is less than the preset temperature and the temperature change rate is less than or equal to the fifth threshold, a corresponding target gear is determined as a tenth gear according to the preset relationship, and the smaller the temperature change rate, the greater the corresponding tenth gear, and a maximum power value corresponding to the tenth gear, a maximum power value corresponding to the ninth gear, a maximum power value corresponding to the eighth gear and a maximum power value corresponding to the seventh gear decrease in turn.

[0078] In the embodiment, in a case that the first ring temperature is greater than a preset temperature and a temperature change rate is greater than or equal to a fifth threshold, the greater the temperature change rate, the more serious the degree that the environmental temperature in the continuous time period cannot decrease when the environmental temperature is greater than the preset temperature, and the more serious the degree that the heating efficiency is greater than or equal to the natural attenuation of the environmental temperature, at this time, the seventh gear is reduced to reduce the heating efficiency of the electric oil heater and decrease the environmental temperature. In a case that the first ring temperature is greater than the preset temperature and the temperature change rate is less than the fifth threshold, the smaller the temperature change rate, the greater the degree that the heating efficiency is lower than the natural attenuation of the environmental temperature, at this time, the eighth gear is increased to increase the heating efficiency of the electric oil heater, so that the heating efficiency is slightly lower than the natural attenuation of the environmental temperature, and then the environmental temperature approaches the preset temperature. In a case that the first ring temperature is less than the preset temperature and the temperature change rate is greater than the fifth threshold, the greater the temperature change rate, the smaller the degree that the heating efficiency is higher than the natural attenuation of the environmental temperature, at this time, the ninth gear is reduced to reduce the heating efficiency of the electric oil heater, and the overall temperature of the electric oil heater has not decreased, so that the heating efficiency is slightly higher than the natural attenuation of the environmental temperature, and the environmental temperature approaches the preset temperature in a transition state. In a case that the first ring temperature is less than the preset temperature and the temperature change rate is less than or equal to the fifth threshold, the smaller the temperature change rate, the greater the degree that the heating efficiency is less than the natural attenuation of the environmental temperature, at this time, the tenth gear is increased to increase the heating efficiency of the electric oil heater to enter a heating state.

[0079] According to another optional solution of the present application, the target gear of the electric oil heater is determined according to the temperature change, the first ring temperature and a preset relationship, including: in the case that the first ring temperature is equal to a preset temperature and the temperature change rate is 0, the target gear is determined as the gear of the electric oil heater corresponding to the previous time period according to the preset relationship; in the case that the first ring temperature is equal to the preset temperature and the temperature change rate is greater than a sixth threshold value, the target gear is determined as the eleventh gear according to the preset relationship; in the case that the first ring temperature is equal to the preset temperature and the temperature change rate is less than the sixth threshold value, the target gear is determined as the twelfth gear according to the preset relationship, wherein the eleventh gear is less than the twelfth gear.

[0080] In actual application process, the fifth threshold value and the sixth threshold value can be 0 respectively, or other values such as 1, 2, and so on.

[0081] In an exemplary embodiment, the power value corresponding to the twelfth gear is less than the maximum power value corresponding to the ninth gear and greater than the maximum power value corresponding to the eighth gear. The power value of the eleventh gear is less than or equal to the maximum power value corresponding to the seventh gear.

[0082] In another optional solution, the step of obtaining the first ring temperature and the second ring temperature is an obtaining step, the step of determining the temperature change between the current time period and the previous time period according to the first ring temperature and the second ring temperature is a first determining step, the step of determining the target gear of the electric oil heater according to the temperature change, the first ring temperature and the preset relationship is a second determining step, and the step of controlling the electric oil heater to operate at the target gear is a control step. The method further includes: cyclically executing the obtaining step, the first determining step, the second determining step and the control step until the cycle number reaches a preset number or until the cycle duration reaches a preset duration. In this way, the environmental temperature is dynamically controlled at each time period during the operation of the electric oil heater, and the problem of high and low environmental temperature is further avoided.

[0083] In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, the implementation process of the control method of the electric oil heater of the present application will be described in detail below in conjunction with specific embodiments.

[0084] The present embodiment relates to a specific control method of an electric oil heater, as shown in Figure 3 The method includes the following steps:

[0085] Step S1: the heating power of the electric oil heater is divided into 5 levels, 0 level without power, 1 / 4 power, 1 / 2 power, 3 / 4 power, and full power, and the detection environment temperature is divided into 5 levels based on the preset temperature, the preset temperature satisfies -2 level < preset temperature -1.5℃ ≤ -1 level < preset temperature -0.5℃ ≤ 0 level ≤ preset temperature +0.5℃ < 1 level ≤ preset temperature +1.5℃ < 2 level, the environment temperature of the space where the electric oil heater is located is detected at each time period during the operation of the electric oil heater, and the current time period environment temperature is compared with the preset temperature threshold value;

[0086] Step S2: the current time period environment temperature is lower than 0 level, and the current time period environment temperature is at the same level or 1 level lower than the last time period, and the 4th level is operated. The environment temperature in the continuous time period is lower than the preset temperature and cannot be improved, the heating efficiency in the continuous time period is lower than or equal to the natural decay of the environment temperature, the 4th level is operated to make the heating efficiency of the electric oil heater reach the highest, and the environment temperature is improved;

[0087] Step S3: the current time period environment temperature is lower than 0 level, and the current time period environment temperature is 1 level higher than the last time period, and the 3rd level is operated. The environment temperature in the continuous time period is increased from -2 level to -1 level, the heating efficiency in the continuous time period is higher than the natural decay of the environment temperature, the medium and high power heating of the electric oil heater is controlled at this time, and the overall temperature of the oil heater has not decreased, the superimposed heating efficiency is slightly higher than the natural decay of the environment temperature, the transition state is entered, and the preset temperature is approached;

[0088] Step S4: the current time period environment temperature is equal to 0 level, and the current time period environment temperature is 1 level or more than 1 level higher than the last time period, and the 1st level is operated. The environment temperature in the continuous time period is increased from -1 level or -2 level to 0 level, the heating efficiency in the continuous time period is higher than the natural decay of the environment temperature, the low power heating of the electric oil heater is controlled at this time, and the overall temperature of the oil heater has not decreased, the superimposed heating efficiency is close to the natural decay of the environment temperature, the temperature maintaining state is entered, the excessive heat is prevented from overflowing, the preset temperature is kept above the continuously rising environment temperature, and the environment temperature is maintained;

[0089] Step S5: the current time period environment temperature is equal to 0 level, and the current time period environment temperature is at the same level compared with the last time period, and the current level is maintained. The environment temperature in the continuous time period is the same as the preset temperature, the heating efficiency in the continuous time period is equal to the natural decay of the environment temperature, the current level of the electric oil heater is maintained at this time, the temperature maintaining state is entered, and the environment temperature is maintained;

[0090] Step S6: When the ambient temperature in the current time period is equal to level 0, and the ambient temperature in the current time period is 1 level or more lower than that in the previous time period, run at level 2. That is, when the ambient temperature drops from +1 or +2 levels to level 0 in a continuous time period, and the heating efficiency is lower than the natural decay of the ambient temperature, the oil heater is controlled to use low power heating to improve heating efficiency and prevent the ambient temperature from continuing to drop below the preset temperature, thus entering the temperature maintenance state;

[0091] Step S7: If the ambient temperature during the current time period is above level 0, and the ambient temperature during the current time period is at the same level or one level higher than the previous time period, run at level 0. This means that if the ambient temperature is higher than the preset temperature for a continuous period and cannot be lowered, and the heating efficiency is higher than or equal to the natural decay of the ambient temperature for a continuous period, running at level 0 will minimize the heating efficiency of the oil heater, putting it into cooling mode and lowering the ambient temperature.

[0092] Step S8: If the ambient temperature is above level 0 in the current time period, and is one level lower than the previous time period, operate at level 1. That is, if the ambient temperature drops from level +2 to level +1 within a continuous time period, and the heating efficiency is lower than the natural decay of the ambient temperature, the oil-filled heater is controlled to heat at low power. The overall temperature of the oil-filled heater does not rise, and the heating efficiency is slightly lower than the natural decay of the ambient temperature to prevent a rapid drop in ambient temperature, entering a transition state and approaching the preset temperature.

[0093] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0094] This application also provides a control device for an electric oil heater. It should be noted that the control device for the electric oil heater in this application can be used to execute the control method for the electric oil heater provided in this application. This device is used to implement the embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0095] The control device for the electric oil heater provided in the embodiments of this application is described below.

[0096] Figure 4 This is a schematic diagram of the control device for an oil-filled radiator according to an embodiment of this application. Figure 4 As shown, the device includes:

[0097] The acquisition unit 10 is configured to acquire a first ring temperature and a second ring temperature, the first ring temperature being an ambient temperature of a current period, and the second ring temperature being an ambient temperature of a previous period of the current period.

[0098] Specifically, the current period and the previous period are consecutive time periods. The first ring temperature and the second ring temperature are measured by a temperature sensing bag arranged in the electric oil heater. Of course, the first ring temperature and the second ring temperature can also be measured by a temperature sensor arranged in the space to be measured, and the first ring temperature and the second ring temperature are acquired by communicating with the temperature sensor.

[0099] The first determination unit 20 is configured to determine a temperature change condition between the current period and the previous period according to the first ring temperature and the second ring temperature.

[0100] Specifically, the temperature change condition can include any temperature change between the current period and the previous period, such as a temperature difference, a temperature change rate, or a difference between a temperature grade corresponding to the first ring temperature and a temperature grade corresponding to the second ring temperature.

[0101] The second determination unit 30 is configured to determine a target gear of the electric oil heater according to the temperature change condition, the first ring temperature, and a preset relationship, wherein the preset relationship includes a corresponding relationship between the temperature change condition, the first ring temperature, and the target gear.

[0102] Specifically, the preset relationship can be set according to an empirical value, or can be obtained according to multiple experimental tests. The preset relationship includes a corresponding relationship between multiple historical temperature change conditions, historical first ring temperatures, and historical gears. The larger the target gear, the greater the heating power of the electric oil heater.

[0103] The control unit 40 is configured to control the electric oil heater to operate at the target gear. By controlling the electric oil heater to operate at the target gear, the electric oil heater heats the environment corresponding to the electric oil heater, so that the difference between the heated environment temperature and the preset temperature is within a preset range.

[0104] Specifically, the preset temperature is a preset expected temperature of the space environment of the electric oil heater.

[0105] By way of example, the first ring temperature representing the ambient temperature of the current period and the second ring temperature representing the ambient temperature of the previous period are acquired by the acquisition unit; the temperature change of the two periods is determined by the first determination unit according to the first ring temperature and the second ring temperature; the target gear of the electric oil heater corresponding to the temperature change, the first ring temperature and the preset relationship is determined by the second determination unit according to the temperature change, the first ring temperature and the preset relationship, wherein the preset relationship includes the corresponding relationship among the temperature change, the first ring temperature and the target gear, and the heating power corresponding to different gears is also different; the control unit controls the electric oil heater to run at the target gear in the current period to heat the space environment where the electric oil heater is located, so that the temperature of the space environment is basically maintained at the preset temperature. Compared with the prior art which only adjusts the working gear of the electric oil heater according to the size relationship between the current ambient temperature and the preset temperature, due to the delay of temperature transmission in the electric oil heater, the space environment temperature difference changes greatly during the electric oil heater gear adjustment process, thereby affecting the user experience. The application fully considers the delay time of multi-stage transmission of the electric oil heater. In addition to the ambient temperature of the current period, the gear change of the electric oil heater is also controlled according to the ambient temperature change in the continuous period. This can make the environment temperature of the electric oil heater gear adjustment process tend to the preset temperature stably, effectively alleviate the problem of cold and hot space environment during the electric oil heater gear adjustment, and ensure good user experience.

[0106] The person skilled in the art can flexibly select the parameter representing the temperature change according to actual needs. In an optional solution, the first determination unit includes: a first determination module configured to determine that the corresponding temperature level is the first level according to the first ring temperature, wherein the temperature level is divided according to the preset temperature; a second determination module configured to determine that the corresponding temperature level is the second level according to the second ring temperature; and a third determination module configured to determine that the difference between the first level and the second level is the level difference, thereby obtaining the temperature change. In the embodiment, the difference between the temperature level corresponding to the first ring temperature and the temperature level corresponding to the second ring temperature is used to represent the temperature change. This can accurately and clearly reflect the temperature change of the two periods, facilitate the subsequent relatively accurate determination of the target gear corresponding to the current period, adjust the ambient temperature by controlling the electric oil heater to run at the target gear, and make the ambient temperature tend to the preset temperature stably, thereby further ensuring the stability of the space environment.

[0107] Specifically, the second determination unit includes:

[0108] The fourth determination module is configured to determine that the target gear is the gear of the electric oil heater corresponding to the previous period according to the preset relationship when the first ring temperature is equal to the preset temperature and the level difference is 0.

[0109] Specifically, the level difference is 0, indicating that the current period and the previous period are in the same temperature level. In the case that the first ring temperature is equal to the preset temperature and the level difference is 0, it is indicated that the ambient temperature in the continuous period is the same as the preset temperature, and the heating efficiency in the continuous period is equal to the natural attenuation of the ambient temperature. At this time, the electric heating oil heater is controlled to maintain the current gear, and enters the temperature maintaining state to keep the ambient temperature.

[0110] The fifth determining module is configured to determine, according to a preset relationship, that the target gear is the first gear in the case that the first ring temperature is equal to the preset temperature and the level difference is greater than or equal to the first threshold value.

[0111] Specifically, the first threshold value can be 1, and the level difference is greater than or equal to 1, that is, the ambient temperature in the current period is 1 level or more than 1 level higher than that in the previous period, such as the ambient temperature in the continuous period rising from -1 level or -2 level to 0 level. In the case that the first ring temperature is equal to the preset temperature and the level difference is greater than or equal to the first threshold value, it is indicated that the heating efficiency in the continuous period is greater than the natural attenuation of the ambient temperature. At this time, the electric heating oil heater is controlled to heat at a lower first gear, and the overall temperature of the electric heating oil heater has not decreased, and the superimposed heating efficiency is similar to the natural attenuation of the ambient temperature, so as to enter the temperature maintaining state, prevent the excess heat from overflowing, and keep the ambient temperature from rising above the preset temperature, thereby achieving the effect of keeping the ambient temperature. Of course, the first threshold value is not limited to the above-mentioned value 1, but can also be other values.

[0112] The sixth determining module is configured to determine, according to a preset relationship, that the target gear is the second gear in the case that the first ring temperature is equal to the preset temperature and the level difference is less than or equal to the second threshold value, wherein the first gear is less than the second gear, and the first threshold value is greater than the second threshold value.

[0113] Specifically, the second threshold value can be -1, and the level difference is less than or equal to -1, indicating that the ambient temperature in the current period is 1 level or more than 1 level lower than that in the previous period, such as the ambient temperature in the continuous period falling from 1 level or 2 level to 0 level. In the case that the first ring temperature is equal to the preset temperature and the level difference is less than or equal to the second threshold value, it is indicated that the heating efficiency in the continuous period is lower than the natural attenuation of the ambient temperature. At this time, the electric heating oil heater is controlled to heat at a second gear greater than the first gear, so as to improve the heating efficiency, prevent the ambient temperature from continuously falling below the preset temperature, enter the temperature maintaining state, and keep the ambient temperature. Of course, the second threshold value is not limited to the above-mentioned value -1, but can also be other values.

[0114] Further, the second determining unit can further include:

[0115] The seventh determining module is configured to determine, according to a preset relationship, that the target gear is the third gear in the case that the first ring temperature is less than the preset temperature and the level difference is greater than the third threshold value.

[0116] Specifically, the third threshold value can be 0, and the grade difference is greater than 0, which means that the ambient temperature of the current period is 1 grade or more than 1 grade higher than the ambient temperature of the previous period, such as the ambient temperature in the continuous period is increased from -2 grade to -1 grade. In the case where the first ring temperature is less than the preset temperature and the grade difference is greater than the third threshold value, it is indicated that the heating efficiency in the continuous period is greater than the natural decay of the ambient temperature, at this time the electric oil heater is controlled to heat at the third gear, and the overall temperature of the oil heater has not decreased, the superimposed heating efficiency is slightly greater than the natural decay of the ambient temperature, and the transition state is entered, and the preset temperature is approached. Of course, the third threshold value is not limited to the above-mentioned value 0, but can also be other values.

[0117] The eighth determination module is configured to determine the target gear as the fourth gear according to a preset relationship in the case where the first ring temperature is less than the preset temperature and the grade difference is less than or equal to the third threshold value, wherein the fourth gear is greater than the third gear.

[0118] Specifically, the third threshold value can be 0, and the grade difference is less than or equal to 0, which means that the ambient temperature of the current period is in the same temperature grade as the ambient temperature of the previous period, or the ambient temperature of the current period is 1 grade or more than 1 grade lower than the ambient temperature of the previous period. In the case where the first ring temperature is less than the preset temperature and the grade difference is less than or equal to the third threshold value, it is indicated that the ambient temperature in the continuous period is lower than the preset temperature and cannot be increased, the heating efficiency in the continuous period is lower than or equal to the natural decay of the ambient temperature, and the fourth gear greater than the third gear is run, which can make the heating efficiency of the electric oil heater relatively high, enter the heating state, increase the ambient temperature, and make the ambient temperature tend to the preset temperature.

[0119] In another exemplary embodiment, the second determination unit can further include:

[0120] The ninth determination module is configured to determine the target gear as the fifth gear according to a preset relationship in the case where the first ring temperature is greater than the preset temperature and the grade difference is greater than or equal to the fourth threshold value.

[0121] Specifically, the fourth threshold value can be 0, and the grade difference is greater than or equal to 0, which means that the ambient temperature of the current period is in the same temperature grade as the ambient temperature of the previous period, or the ambient temperature of the current period is 1 grade or more than 1 grade higher than the ambient temperature of the previous period. In the case where the first ring temperature is greater than the preset temperature and the grade difference is greater than or equal to the fourth threshold value, it is indicated that the ambient temperature in the continuous period is greater than the preset temperature and cannot be decreased, the heating efficiency in the continuous period is greater than or equal to the natural decay of the ambient temperature, and the fifth gear which is lower can make the heating efficiency of the electric oil heater relatively low, enter the cooling state, decrease the ambient temperature, and make the ambient temperature tend to the preset temperature. Of course, the fourth threshold value is not limited to the above-mentioned value 0, but can also be other values.

[0122] The tenth determining module is configured to determine the target gear as the sixth gear according to the preset relationship when the first ring temperature is greater than the preset temperature and the grade difference is less than the fourth threshold value, wherein the sixth gear is greater than the fifth gear.

[0123] Specifically, the fourth threshold value can be 0, and the grade difference less than 0 indicates that the ambient temperature in the current period is 1 level or more lower than the ambient temperature in the previous period, such as the ambient temperature in the continuous period decreasing from 2 levels to 1 level. In the case that the first ring temperature is greater than the preset temperature and the grade difference is less than the fourth threshold value, it indicates that the heating efficiency in the continuous period is lower than the natural decay of the ambient temperature, at this time, the electric heating oil heater is controlled to heat at the sixth gear, the overall temperature of the electric heating oil heater does not rise, the heating efficiency is slightly lower than the natural decay of the ambient temperature, preventing the ambient temperature from rapidly decreasing, entering a transition state, and approaching the preset temperature. Of course, the fourth threshold value is not limited to the above-mentioned value 0, but can also be other values.

[0124] In an optional embodiment of the present application, the third gear is greater than the second gear. The fifth gear is less than the first gear, and the sixth gear is equal to the first gear. Further, the present application divides the heating gears of the electric heating oil heater into 5 gears according to the heating power of the electric heating oil heater, wherein the fifth gear is no power, that is, to stop heating; the first gear is 1 / 4 power, the second gear is 1 / 2 power, the third gear is 3 / 4 power, and the fourth gear is full power.

[0125] The gears are not limited to the 5 gears, but can also be divided into 6 gears, 4 gears, etc. according to actual needs. The power values corresponding to each gear are also not limited to the above-mentioned values. For example, in the case of dividing into 6 gears, the first gear to the sixth gear increases in turn, and correspond to no power, 1 / 5 power, 2 / 5 power, 3 / 5 power, 4 / 5 power and full power in turn. The present application does not make specific limitations on the number of gears and the power values corresponding to each gear.

[0126] Of course, according to the temperature change condition, the first ring temperature and the preset relationship, the determination of the target gear of the electric heating oil heater is not limited to the above-mentioned manner. In an embodiment, the preset relationship further includes the corresponding relationship between the temperature change condition, the temperature grade corresponding to the first ring temperature and the target gear. The second determining unit includes: an eleventh determining module configured to determine the corresponding temperature grade as the first grade according to the first ring temperature; and a twelfth determining module configured to determine the corresponding target gear according to the first grade, the temperature change condition and the preset relationship.

[0127] In actual application, the person skilled in the art can divide different ranges and different numbers of temperature grades according to the preset temperature. According to an exemplary embodiment of the present application, the temperature grades include five grades, namely, grade-2, grade-1, grade-0, grade-1 and grade-2, wherein, when the temperature is equal to the preset temperature, it indicates that the temperature is at grade-0. The relationship of the temperature grades is as follows: grade-2 < preset temperature-1.5℃ ≤ grade-1 < preset temperature-0.5℃ ≤ grade-0 ≤ preset temperature+0.5℃ < grade-1 ≤ preset temperature+1.5℃ < grade-2. Of course, the number of the temperature grades is not limited to five, and the size relationship of the temperature grades is not limited to the above. The person skilled in the art can flexibly set the number of the temperature grades and the corresponding temperature range according to the actual situation.

[0128] The twelfth determining module can include the following:

[0129] The first determining sub-module is configured to, when the first grade is equal to grade-0 and the grade difference is 0, determine the target gear to be the gear of the electric oil heater in the previous period according to a preset relationship;

[0130] The second determining sub-module is configured to, when the first grade is equal to grade-0 and the grade difference is greater than or equal to 1, determine the target gear to be the first gear according to a preset relationship;

[0131] The third determining sub-module is configured to, when the first grade is equal to grade-0 and the grade difference is less than or equal to-1, determine the target gear to be the second gear according to a preset relationship;

[0132] The fourth determining sub-module is configured to, when the first grade is less than grade-0 and the grade difference is greater than 0, determine the target gear to be the third gear according to a preset relationship;

[0133] The fifth determining sub-module is configured to, when the first grade is less than grade-0 and the grade difference is less than or equal to 0, determine the target gear to be the fourth gear according to a preset relationship;

[0134] The sixth determining sub-module is configured to, when the first grade is greater than grade-0 and the grade difference is greater than or equal to 0, determine the target gear to be the zeroth gear according to a preset relationship;

[0135] The seventh determining sub-module is configured to, when the first grade is greater than grade-0 and the grade difference is less than 0, determine the target gear to be the first gear according to a preset relationship, wherein, the zeroth gear, the first gear, the second gear, the third gear and the fourth gear increase in turn.

[0136] By implementing the embodiment, the ambient temperature is detected in a continuous time period during the operation of the electric oil heater, the change of the ambient temperature in the continuous time period is compared, when the detected ambient temperature approaches the preset temperature, the heating level of the electric oil heater is controlled according to the rise and fall of the detected ambient temperature, so that the heating efficiency of the electric oil heater gradually approaches the natural attenuation of the ambient temperature, the speed of the ambient temperature tending to the preset temperature is reduced, and a transition state is entered; when the detected ambient temperature in the continuous time period becomes the same as the preset temperature, the heating level of the electric oil heater is controlled again according to the rise and fall of the detected ambient temperature, so that the heating efficiency of the electric oil heater is equal to the natural attenuation of the ambient temperature, and a temperature maintaining state is entered, thereby further solving the problem that the space environment is cold and hot in the process of adjusting the level of the electric oil heater in the prior art, affecting the user experience, further ensuring that the temperature change range of the space environment is small, and further ensuring that the user experience is good.

[0137] In addition to the level difference of the temperature, other parameters can also be used to represent the temperature change in the continuous time period, specifically, the first determining unit comprises: a calculation module configured to calculate the difference between the first ring temperature and the second ring temperature as a temperature difference according to the first ring temperature and the second ring temperature; and a thirteenth determining module configured to determine the quotient of the temperature difference and a time difference as a temperature change rate to obtain the temperature change, the time difference being the interval between the current time period and the previous time period. In the embodiment, the temperature change rate of the first ring temperature and the second ring temperature is used to represent the temperature change, which can accurately and clearly reflect the temperature change of the two time periods, facilitating the subsequent accurate determination of the target level corresponding to the current time period according to the temperature change rate, the adjustment of the ambient temperature by controlling the electric oil heater to operate at the target level, and the stable tendency of the ambient temperature to the preset temperature, thereby further ensuring the stability of the space environment.

[0138] Further, the second determining unit comprises: a fourteenth determining module, configured to determine, according to a preset relationship, the corresponding target gear to be the seventh gear when the first ambient temperature is greater than the preset temperature and the temperature variation rate is greater than or equal to the fifth threshold, and the greater the temperature variation rate, the smaller the corresponding seventh gear; a fifteenth determining module, configured to determine, according to a preset relationship, the corresponding target gear to be the eighth gear when the first ambient temperature is greater than the preset temperature and the temperature variation rate is less than the fifth threshold, and the smaller the temperature variation rate, the greater the determined eighth gear; a sixteenth determining module, configured to determine, according to a preset relationship, the corresponding target gear to be the ninth gear when the first ambient temperature is less than the preset temperature and the temperature variation rate is greater than the fifth threshold, and the greater the temperature variation rate, the smaller the corresponding ninth gear; and a seventeenth determining module, configured to determine, according to a preset relationship, the corresponding target gear to be the tenth gear when the first ambient temperature is less than the preset temperature and the temperature variation rate is less than or equal to the fifth threshold, and the smaller the temperature variation rate, the greater the corresponding tenth gear, and the power maximum value corresponding to the tenth gear, the power maximum value corresponding to the ninth gear, the power maximum value corresponding to the eighth gear and the power maximum value corresponding to the seventh gear decrease in turn.

[0139] In the embodiment, when the first ambient temperature is greater than the preset temperature and the temperature variation rate is greater than or equal to the fifth threshold, the greater the temperature variation rate, the more serious the degree that the environmental temperature in the continuous time period cannot decrease and the more serious the degree that the heating efficiency is greater than or equal to the natural attenuation of the environmental temperature, at this time, the seventh gear is reduced to reduce the heating efficiency of the electric oil heater, and the environmental temperature is decreased. When the first ambient temperature is greater than the preset temperature and the temperature variation rate is less than the fifth threshold, the smaller the temperature variation rate, the greater the degree that the heating efficiency is lower than the natural attenuation of the environmental temperature, at this time, the eighth gear is increased to increase the heating efficiency of the electric oil heater, so that the heating efficiency is slightly lower than the natural attenuation of the environmental temperature, and the environmental temperature approaches the preset temperature. When the first ambient temperature is less than the preset temperature and the temperature variation rate is greater than the fifth threshold, the greater the temperature variation rate, the smaller the degree that the heating efficiency is higher than the natural attenuation of the environmental temperature, at this time, the ninth gear is reduced to reduce the heating efficiency of the electric oil heater, and the overall temperature of the electric oil heater has not decreased, the heating efficiency is slightly higher than the natural attenuation of the environmental temperature, and the environmental temperature approaches the preset temperature. When the first ambient temperature is less than the preset temperature and the temperature variation rate is less than or equal to the fifth threshold, the smaller the temperature variation rate, the greater the degree that the heating efficiency is less than the natural attenuation of the environmental temperature, at this time, the tenth gear is increased to increase the heating efficiency of the electric oil heater, so that the electric oil heater enters the heating state.

[0140] According to still another optional solution of the present application, the second determining unit comprises: an eighteenth determining module, configured to determine the target gear to be the gear of the electric oil heater in the previous time period according to the preset relationship when the first ambient temperature is equal to the preset temperature and the temperature change rate is 0; a nineteenth determining module, configured to determine the target gear to be the eleventh gear according to the preset relationship when the first ambient temperature is equal to the preset temperature and the temperature change rate is greater than the sixth threshold; and a twentieth determining module, configured to determine the target gear to be the twelfth gear according to the preset relationship when the first ambient temperature is equal to the preset temperature and the temperature change rate is less than the sixth threshold, wherein the eleventh gear is less than the twelfth gear.

[0141] In actual application, the fifth threshold and the sixth threshold can be 0, or other values such as 1, 2, and the like.

[0142] In an exemplary embodiment, the power value corresponding to the twelfth gear is less than the maximum power value corresponding to the ninth gear and greater than the maximum power value corresponding to the eighth gear. The power value of the eleventh gear is less than or equal to the maximum power value corresponding to the seventh gear.

[0143] In still another optional solution, the step of obtaining the first ambient temperature and the second ambient temperature is an obtaining step, the step of determining the temperature change condition between the current time period and the previous time period according to the first ambient temperature and the second ambient temperature is a first determining step, the step of determining the target gear of the electric oil heater according to the temperature change condition, the first ambient temperature, and the preset relationship is a second determining step, and the step of controlling the electric oil heater to operate at the target gear is a controlling step. The device further comprises a cycling unit configured to cyclically execute the obtaining step, the first determining step, the second determining step, and the controlling step until the number of cycles reaches a preset number or until the cycle length reaches a preset length. This further realizes dynamic regulation of the ambient temperature at each time period during the operation of the electric oil heater, and further avoids the problem of high and low ambient temperatures.

[0144] The control device of the electric oil heater comprises a processor and a memory, and the obtaining unit, the first determining unit, the second determining unit, and the controlling unit are all stored in the memory as program units, and the corresponding functions are realized by the processor executing the program units stored in the memory. The modules are all located in the same processor; or, the modules are located in different processors in any combination.

[0145] The processor comprises a core, and the core retrieves the corresponding program units from the memory. The core can be set to one or more, and the problem of high and low ambient temperatures in the process of adjusting the gears of the electric oil heater in the prior art, which affects the user experience, is solved by adjusting the core parameters.

[0146] The memory can include non-persistent memory in a computer readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

[0147] The embodiment of the present application provides a computer readable storage medium, the computer readable storage medium comprises a stored program, wherein the computer readable storage medium controls the device where the computer readable storage medium is located to execute the control method of the electric oil heater when the program is running.

[0148] The embodiment of the present application provides a processor, the processor is used for running a program, wherein the processor executes the control method of the electric oil heater when the program is running.

[0149] The embodiment of the present application provides an electric oil heater system, comprising: an electric oil heater; a controller of the electric oil heater, comprising a processor, a memory and a program stored in the memory and capable of running on the processor, and the processor executes the program to realize at least the following steps:

[0150] Step S201, a first ring temperature and a second ring temperature are acquired, the first ring temperature is an ambient temperature of a current period, and the second ring temperature is an ambient temperature of a previous period of the current period;

[0151] Step S202, a temperature change condition between the current period and the previous period is determined according to the first ring temperature and the second ring temperature;

[0152] Step S203, a target gear of the electric oil heater is determined according to the temperature change condition, the first ring temperature and a preset relationship, wherein the preset relationship comprises a corresponding relationship among the temperature change condition, the first ring temperature and the target gear;

[0153] Step S204, the electric oil heater is controlled to run at the target gear.

[0154] The device herein can be a server, a PC, a PAD, a mobile phone and the like.

[0155] The present application also provides a computer program product, when executed on a data processing device, is suitable for executing the program of the steps of the control method of the electric oil heater.

[0156] It should be apparent to those skilled in the art that the modules or steps of the application can be implemented with general computing devices, which can be centralized on a single computing device or distributed across a network of multiple computing devices, which can be implemented with program code executable by a computing device, which can be stored in a storage device for execution by a computing device, and in some cases, the steps shown or described can be performed in a different order than shown, or can be implemented as separate integrated circuit modules, or as a single integrated circuit module, and thus the application is not limited to any particular combination of hardware and software.

[0157] Those skilled in the art will appreciate that embodiments of the application can be devised for a method, a system, or a computer program product. Accordingly, the application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.

[0158] The present application is described herein with reference to the flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing system, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams.

[0159] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams.

[0160] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart illustrations and / or block diagrams. Figure 1one or more processes and / or blocks Figure 1 steps of a function specified in one or more blocks.

[0161] In one typical arrangement, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0162] The memory can include non-persistent memory and / or volatile memory, such as random access memory (RAM) about which the processor can execute instructions. The memory can also include non-volatile memory, such as read only memory (ROM), electrically programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), flash memory, or other memory technologies, CD-ROM, digital versatile disc (DVD), or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to store information for access by a computing device. In no case does the disclosure rely on a transitory medium to provide a sole means to carry out the function of the disclosure.

[0163] The computer readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), electrically programmable read only memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage device, or any other non-transitory medium that can be used to store information that can be accessed by a computing device. According to the definition in this paper, computer readable medium does not include transitory computer readable medium, such as modulated data signal and carrier wave.

[0164] It should also be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

[0165] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method for an electric oil heater, characterized by comprising the steps of: The method comprises: obtaining a first ring temperature and a second ring temperature, the first ring temperature being an ambient temperature of a current period, and the second ring temperature being an ambient temperature of a previous period of the current period; determining a temperature change condition between the current period and the previous period according to the first ring temperature and the second ring temperature; determining a target gear of the electric oil heater according to the temperature change condition, the first ring temperature, and a preset relationship, wherein the preset relationship comprises a corresponding relationship among the temperature change condition, the first ring temperature, and the target gear; controlling the electric oil heater to operate at the target gear, determining a temperature change condition between the current period and the previous period according to the first ring temperature and the second ring temperature comprises: determining that a corresponding temperature grade is a first grade according to the first ring temperature, wherein the temperature grade is divided according to a preset temperature; determining that the corresponding temperature grade is a second grade according to the second ring temperature; determining a grade difference between the first grade and the second grade to obtain the temperature change condition, determining a target gear of the electric oil heater according to the temperature change condition, the first ring temperature, and a preset relationship comprises: in a case where the first ring temperature is equal to the preset temperature and the grade difference is 0, determining the target gear to be a gear of the electric oil heater corresponding to the previous period according to the preset relationship; in a case where the first ring temperature is equal to the preset temperature and the grade difference is greater than or equal to a first threshold value, determining the target gear to be a first gear according to the preset relationship; in a case where the first ring temperature is equal to the preset temperature and the grade difference is less than or equal to a second threshold value, determining the target gear to be a second gear according to the preset relationship, wherein the first gear is less than the second gear, and the first threshold value is greater than the second threshold value.

2. The method of claim 1, wherein, determining a target gear of the electric oil heater according to the temperature change condition, the first ring temperature, and a preset relationship comprises: in a case where the first ring temperature is less than the preset temperature and the grade difference is greater than a third threshold value, determining the target gear to be a third gear according to the preset relationship; in a case where the first ring temperature is less than the preset temperature and the grade difference is less than or equal to the third threshold value, determining the target gear to be a fourth gear according to the preset relationship, wherein the fourth gear is greater than the third gear.

3. The method of claim 1, wherein, determining a target gear of the electric oil heater according to the temperature change condition, the first ring temperature, and a preset relationship comprises: in a case where the first ring temperature is greater than the preset temperature and the grade difference is greater than or equal to a fourth threshold value, determining the target gear to be a fifth gear according to the preset relationship; in a case where the first ring temperature is greater than the preset temperature and the grade difference is less than the fourth threshold value, determining the target gear to be a sixth gear according to the preset relationship, wherein the sixth gear is greater than the fifth gear.

4. The method of claim 1, wherein, determining a temperature change condition between the current period and the previous period according to the first ring temperature and the second ring temperature comprises: According to the first ring temperature and the second ring temperature, a difference between the first ring temperature and the second ring temperature is calculated as a temperature difference; A quotient of the temperature difference and a time difference is determined as a temperature change rate, and the temperature change condition is obtained, the time difference being an interval between the current period and the previous period.

5. The method of claim 4, wherein, According to the temperature change condition, the first ring temperature, and a preset relationship, a target gear of the electric oil heater is determined, including: In a case where the first ring temperature is greater than the preset temperature and the temperature change rate is greater than or equal to a fifth threshold value, a corresponding target gear is determined as a seventh gear according to the preset relationship, and the greater the temperature change rate, the smaller the corresponding seventh gear; In a case where the first ring temperature is greater than the preset temperature and the temperature change rate is less than the fifth threshold value, a corresponding target gear is determined as an eighth gear according to the preset relationship, and the smaller the temperature change rate, the greater the eighth gear is determined; In a case where the first ring temperature is less than the preset temperature and the temperature change rate is greater than the fifth threshold value, a corresponding target gear is determined as a ninth gear according to the preset relationship, and the greater the temperature change rate, the smaller the corresponding ninth gear; In a case where the first ring temperature is less than the preset temperature and the temperature change rate is less than or equal to the fifth threshold value, a corresponding target gear is determined as a tenth gear according to the preset relationship, and the smaller the temperature change rate, the greater the corresponding tenth gear, and a maximum power value corresponding to the tenth gear, a maximum power value corresponding to the ninth gear, a maximum power value corresponding to the eighth gear, and a maximum power value corresponding to the seventh gear decrease in turn.

6. The method of claim 4, wherein, According to the temperature change condition, the first ring temperature, and a preset relationship, a target gear of the electric oil heater is determined, including: In a case where the first ring temperature is equal to the preset temperature and the temperature change rate is 0, the target gear is determined as a gear of the electric oil heater corresponding to the previous period according to the preset relationship; In a case where the first ring temperature is equal to the preset temperature and the temperature change rate is greater than a sixth threshold value, the target gear is determined as an eleventh gear according to the preset relationship; In a case where the first ring temperature is equal to the preset temperature and the temperature change rate is less than the sixth threshold value, the target gear is determined as a twelfth gear according to the preset relationship, wherein the eleventh gear is less than the twelfth gear.

7. A control device for an electric oil heater, characterized by comprising: Including: An acquisition unit is configured to acquire a first ring temperature and a second ring temperature, the first ring temperature being an ambient temperature of a current period, and the second ring temperature being an ambient temperature of a previous period of the current period; A first determination unit is configured to determine a temperature change condition between the current period and the previous period according to the first ring temperature and the second ring temperature; A second determination unit is configured to determine a target gear of the electric oil heater according to the temperature change condition, the first ring temperature, and a preset relationship, wherein the preset relationship includes a corresponding relationship between the temperature change condition, the first ring temperature, and the target gear. A control unit is configured to control the electric oil heater to operate at the target gear, The first determining unit comprises: A first determining module is configured to determine, according to the first ambient temperature, a corresponding temperature grade as a first grade, wherein the temperature grade is divided according to a preset temperature; A second determining module is configured to determine, according to the second ambient temperature, the corresponding temperature grade as a second grade; A third determining module is configured to determine a difference between the first grade and the second grade as a grade difference, and obtain the temperature change condition, The second determining unit comprises: A fourth determining module is configured to, in a case that the first ambient temperature is equal to the preset temperature and the grade difference is 0, determine, according to the preset relationship, the target gear as a gear of the electric oil heater corresponding to the last time period; A fifth determining module is configured to, in a case that the first ambient temperature is equal to the preset temperature and the grade difference is greater than or equal to a first threshold value, determine, according to the preset relationship, the target gear as a first gear; A sixth determining module is configured to, in a case that the first ambient temperature is equal to the preset temperature and the grade difference is less than or equal to a second threshold value, determine, according to the preset relationship, the target gear as a second gear, wherein the first gear is less than the second gear, and the first threshold value is greater than the second threshold value.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored program, wherein the program controls a device where the computer readable storage medium is located to execute the method in any one of claims 1 to 6 when the program is running.

9. A processor, comprising: The processor is configured to run a program, wherein the program executes the method in any one of claims 1 to 6 when the program is running.

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