Temperature rise control method, device and equipment, medium, program product and household appliance

Abstract

The invention relates to the technical field of household appliance over-temperature protection, and discloses a temperature rise control method, device and equipment, a medium, a program product and a household appliance, and the method comprises the steps: sequentially obtaining a fixed operation voltage and a plurality of real-time operation currents of the household appliance according to the operation time after the household appliance is started; determining corresponding unit energy consumption according to the fixed operation voltage and each real-time operation current, and determining a corresponding weight coefficient according to each real-time operation current; performing weighted summation according to the weight coefficient and the unit energy consumption to obtain accumulated energy consumption, and judging whether an over-temperature protection mechanism is triggered or not according to the accumulated energy consumption; and if the over-temperature protection mechanism is triggered, controlling the household appliance to perform shutdown cooling according to the over-temperature protection mechanism. The energy consumption condition of the equipment in the actual operation process can be monitored in real time, differential accumulation is carried out on real-time consumption according to different loads, the temperature change condition is accurately recognized based on the accumulated energy consumption after starting, and over-temperature protection is triggered in advance.

Description

Technical Field

[0001] This invention relates to the field of overheat protection technology for household appliances, specifically to methods, devices, equipment, media, program products, and household appliances for temperature rise control. Background Technology

[0002] When home appliances are running, the motor, as the core power component, experiences a rapid rise in temperature due to continuous high-power operation. Once the motor temperature exceeds its preset safety threshold, the overheat protection device will activate quickly, manifesting as a sudden shutdown of the appliance or the illumination of a fault warning light on the control panel, rendering the appliance unusable. Currently, many home appliances employ simple runtime limiting strategies. However, these strategies fail to consider actual load conditions, resulting in limitations even under light loads, severely impacting the user experience. Summary of the Invention

[0003] In view of this, the present invention provides a temperature rise control method, device, equipment, medium, program product and household appliance to solve the problem that over-temperature protection based solely on time cannot achieve precise control.

[0004] In a first aspect, the present invention provides a temperature rise control method, the method comprising:

[0005] After the home appliances are started, the fixed operating voltage and multiple real-time operating currents of the home appliances are obtained sequentially according to the running time.

[0006] The corresponding unit energy consumption is determined based on the fixed operating voltage and each real-time operating current, and the corresponding weighting coefficient is determined based on each real-time operating current.

[0007] The cumulative energy consumption is obtained by weighting and summing the weighted coefficients and unit energy consumption, and the over-temperature protection mechanism is triggered based on the cumulative energy consumption.

[0008] If the over-temperature protection mechanism is triggered, the appliance will be shut down and cooled down according to the over-temperature protection mechanism.

[0009] The temperature rise control method provided by this invention acquires the fixed operating voltage and multiple real-time operating currents of the home appliance sequentially according to its running time after startup. It determines the unit energy consumption based on the fixed operating voltage and each real-time operating current, and determines weighting coefficients based on the real-time operating currents. The cumulative energy consumption is obtained by weighted summation. The cumulative energy consumption is then used to determine whether an over-temperature protection mechanism is triggered. If triggered, the operating status of the home appliance is controlled. This invention, based on cumulative energy consumption over running time, considers both the running time factor and real-time monitoring of the energy consumption during the actual operation of the home appliance. It flexibly accumulates real-time consumption differently according to different loads to determine the cumulative energy consumption after the home appliance starts. Since the accumulation of energy consumption directly causes temperature changes, it can accurately identify temperature changes and trigger over-temperature protection in advance, thereby effectively controlling the motor's temperature rise, extending the equipment's service life, and improving the user experience.

[0010] In one optional implementation, the corresponding unit energy consumption is determined based on the fixed operating voltage and each real-time operating current, and the corresponding weighting coefficient is determined based on each real-time operating current. This includes: calculating the product of the fixed operating voltage, real-time operating current, and unit time information to obtain the unit energy consumption; and determining the weighting coefficient based on the correspondence between the real-time operating current and the predetermined operating current and the weighting coefficient.

[0011] This invention calculates the unit energy consumption of home appliances and their corresponding weighting coefficients. It dynamically adjusts the impact of energy consumption on temperature based on different loads. Higher loads result in higher unit energy consumption, leading to more heat generation per unit time and a greater likelihood of heat accumulation. The corresponding weighting coefficients adjust with real-time operating current changes. When the device is under high load, the weighting coefficients increase accordingly, giving a higher weight to energy consumption during high load periods in the cumulative calculation. This more accurately reflects the actual heat generation of the device under high load and allows for early prediction of potential temperature risks.

[0012] In one optional implementation, a weighted sum is performed based on the weight coefficients and unit energy consumption to obtain the cumulative energy consumption, and an over-temperature protection mechanism is triggered based on the cumulative energy consumption. This includes: sequentially performing a weighted sum on multiple unit energy consumptions and their corresponding weight coefficients according to the running time to obtain the cumulative energy consumption; comparing the cumulative energy consumption with a pre-set over-temperature protection energy threshold; and triggering the over-temperature protection mechanism if the cumulative energy consumption exceeds the over-temperature protection energy threshold.

[0013] This invention accumulates the unit energy consumption during the operation of home appliances, enabling a complete and continuous record of the energy consumption trajectory since the device's startup. This ensures that the calculation of accumulated energy consumption closely matches the actual operating status of the device. It constructs a protection mechanism that compares accumulated energy consumption with the over-temperature protection energy threshold, thereby establishing a scientific early warning standard. This avoids false triggering due to improper threshold settings and prevents over-temperature risks caused by a lack of dynamic monitoring, effectively preventing overheating damage to the device due to prolonged high-energy-consumption operation.

[0014] In one optional implementation, the process of determining the correspondence between operating current and weighting coefficient includes: controlling the tested motor to operate under different operating conditions, wherein the operating voltage is the same under different operating conditions, the operating current is different, and the operating current does not exceed the maximum current threshold; acquiring the operating temperature of the tested motor during operation and determining whether the operating temperature reaches the maximum temperature threshold; if the operating temperature reaches the maximum temperature threshold, acquiring the cumulative energy demand and cumulative operating time of the tested motor; determining the expected weighting coefficient corresponding to different operating currents based on the ratio of cumulative energy demand to cumulative operating time under different operating currents; fitting the operating current and the expected weighting coefficient to obtain fitting coefficients, and determining the correspondence between operating current and weighting coefficients based on the fitting coefficients.

[0015] This invention, based on experimental determination of the correspondence between operating current and weighting coefficients, can accurately explore the impact of current changes on equipment operating temperature, truly reflect the relationship between energy and temperature changes of equipment under different loads, and enable home appliances to automatically adapt weights according to real-time current, thereby achieving dynamic response to equipment operating status.

[0016] In one optional implementation, the process of determining the over-temperature protection energy threshold includes: using the cumulative energy demand corresponding to the highest current threshold as the over-temperature protection energy threshold.

[0017] This invention sets the cumulative energy demand corresponding to the highest current threshold as the over-temperature protection energy threshold, which can both set a safety boundary based on the actual withstand capacity of the equipment and avoid setting the threshold too strictly, affecting the normal use of the equipment, or too loosely, causing the protection to fail.

[0018] In one optional implementation, after controlling the home appliance to shut down and cool down according to the over-temperature protection mechanism, the method further includes: accumulating the shutdown time and determining whether the shutdown time is greater than a preset time threshold. If it is greater, the appliance is allowed to start up; otherwise, it is forced to shut down.

[0019] This invention, through a forced shutdown strategy, ensures that home appliances can resume operation after cooling down, avoiding the risk of overheating, effectively reducing the probability of equipment damage due to overheating, improving equipment stability and safety, extending equipment lifespan, reducing maintenance costs, and providing users with a more reliable and efficient home appliance experience.

[0020] Secondly, the present invention provides a temperature rise control device, the device comprising:

[0021] The information acquisition module is used to acquire the fixed operating voltage and multiple real-time operating currents of the home appliances sequentially according to the running time after the home appliances are started.

[0022] The energy calculation module is used to determine the corresponding unit energy consumption based on the fixed operating voltage and various real-time operating currents, and to determine the corresponding weighting coefficient based on various real-time operating currents.

[0023] The over-temperature detection module is used to perform a weighted summation based on the weighting coefficient and the unit energy consumption to obtain the cumulative energy consumption, and to determine whether the over-temperature protection mechanism is triggered based on the cumulative energy consumption.

[0024] The over-temperature protection module is used to control the home appliances to shut down and cool down if the over-temperature protection mechanism is triggered.

[0025] Thirdly, the present invention provides a computer device, comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the temperature rise control method of the first aspect or any corresponding embodiment described above.

[0026] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the temperature rise control method of the first aspect or any corresponding embodiment thereof.

[0027] Fifthly, the present invention provides a computer program product, including computer instructions for causing a computer to execute the temperature rise control method of the first aspect or any corresponding embodiment thereof.

[0028] In a sixth aspect, the present invention provides a home appliance, comprising: a signal acquisition module for acquiring the real-time operating current and fixed operating voltage of the home appliance; a drive motor for driving the home appliance to operate; and a main control module connected to the signal acquisition module and the drive motor for executing the temperature rise control method of the first aspect or any corresponding embodiment thereof.

[0029] The home appliance provided by this invention can monitor the energy consumption of the home appliance in real time during actual operation, and flexibly accumulate the real-time consumption in a differentiated manner according to different loads to determine the cumulative energy consumption after startup, accurately identify the temperature changes caused by the accumulation of energy consumption, and trigger over-temperature protection in advance, thereby effectively controlling the temperature rise of the motor, extending the service life of the equipment, and improving the user experience. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic flowchart of a temperature rise control method according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic flowchart of the temperature rise control method according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic flowchart of another temperature rise control method according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic flowchart of another temperature rise control method according to an embodiment of the present invention;

[0035] Figure 5 This is a structural block diagram of a temperature rise control device according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention;

[0037] Figure 7 This is a structural block diagram of a household appliance according to an embodiment of the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] This invention also applies to scenarios where home appliances automatically control temperature rise during operation to prevent overheating. Taking an electric cleaning brush as an example, electric cleaning brushes are widely used in homes due to their efficient cleaning capabilities. However, during prolonged high-load use, the motor's continuous high-power operation can easily lead to increased motor temperature, triggering overheat protection. Without any temperature rise protection mechanism, prolonged high-load use can easily cause the motor to overheat and even burn out, affecting the reliability and lifespan of the device. However, if a simple running time limitation strategy (such as limiting continuous running time) is adopted without considering the actual load, even after prolonged operation under light load, the operation will still be limited. However, the heat generated by the light load is relatively small and can be cooled to a certain extent through heat dissipation, thus not affecting actual use or causing damage to the device. Therefore, shutdowns under light load would severely impact the user experience. Addressing the contradiction between reliability and user-friendliness in the actual use of electric cleaning brushes, this invention provides a temperature rise control method that determines whether an overheat protection mechanism is triggered by real-time monitoring of accumulated energy consumption, thereby accurately identifying temperature changes caused by accumulated energy consumption.

[0040] According to an embodiment of the present invention, a temperature rise control method embodiment is provided. 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. Furthermore, 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.

[0041] This embodiment provides a temperature rise control method, which can be used in the aforementioned household appliances, such as electric cleaning brushes. Figure 1 This is a flowchart of a temperature rise control method according to an embodiment of the present invention, such as... Figure 1 As shown, the process includes the following steps:

[0042] Step S101: After the home appliance is started, the fixed operating voltage and multiple real-time operating currents of the home appliance are obtained sequentially according to the running time.

[0043] Specifically, in this embodiment of the invention, taking an electric cleaning brush as an example, a signal acquisition module is internally deployed to collect parameters such as voltage, current, rotation speed, and running time during the operation of the electric cleaning brush. The electric cleaning brush is typically powered by a rechargeable battery (such as a lithium battery) or an external power source. Battery-powered models stabilize the output voltage (commonly 3.7V, 7.4V, etc.) through a built-in battery management system, while externally powered models convert AC to DC power via an adapter. The power supply powers the internal motor of the electric cleaning brush. After the motor is energized, the internal coil rotates under the influence of a magnetic field, converting electrical energy into rotational mechanical energy. Therefore, the operating voltage of the electric cleaning brush is relatively fixed. In this embodiment of the invention, when acquiring voltage information, a voltage sensor at the power interface is used for precise measurement, and this voltage value is stored as the fixed operating voltage. The fixed operating voltage will serve as an important benchmark parameter for subsequent calculations of energy consumption. To ensure the accuracy of the calculations, the system will also verify the read voltage value to eliminate abnormal data caused by factors such as power grid fluctuations and measurement errors.

[0044] In some optional implementations, the motor load of the electric cleaning brush changes during operation due to variations in operating mode or force. With a fixed voltage, the motor adapts to these load changes by adjusting the current. Therefore, acquiring the real-time operating current is a dynamic and high-frequency process. The system utilizes high-precision current sensors (such as Hall effect current sensors and shunts) to continuously collect current data during device operation at time intervals of seconds, milliseconds, or even microseconds. The current sensors are precisely installed on the main circuit of the device, enabling real-time sensing of changes in the magnitude and direction of the current in the circuit. As the device's operating state changes, such as increased load or function switching, the current value fluctuates accordingly. The sensors transmit each captured current change value to the system's data processing unit in real time, thus continuously obtaining the real-time operating current. The system filters this real-time current data to remove noise signals generated by electromagnetic interference, the impact of device startup, etc., ensuring that the acquired current information is accurate and valid, providing reliable data support for subsequent calculations of unit energy consumption and weighting coefficients.

[0045] In some alternative implementations, such as Figure 2 As shown, after the electric cleaning brush is turned on, the drive motor operates at the default initial speed and the motor operating voltage, operating current and operating speed are detected in real time, and the motor running time is also detected.

[0046] Step S102: Determine the corresponding unit energy consumption based on the fixed operating voltage and each real-time operating current, and determine the corresponding weighting coefficient based on each real-time operating current.

[0047] Specifically, in this embodiment of the invention, the power of the electric cleaning brush originates from a power supply, whether it is a built-in lithium battery (DC power supply) or an external adapter (AC power converted to DC). During operation, the current and voltage follow Ohm's law and the power formula. The power supply outputs a stable voltage U to power components such as the motor, while the current I changes in real time according to the device load. According to the power formula P = UI, the product of voltage and current determines the instantaneous power of the device, that is, the electrical energy consumed per unit time. For example, when the cleaning brush encounters stubborn stains, the motor needs to overcome greater resistance. At this time, the current I increases, and with the voltage U remaining constant, the power P increases significantly, meaning more electrical energy is consumed per unit time. Therefore, this embodiment of the invention calculates the power within a unit time Δt based on the fixed operating voltage and real-time operating current, and uses this as the unit energy consumption E(t) of the electric cleaning brush within the current unit time Δt. The calculation formula is as follows:

[0048] E(t)=I(t)×V(t)×Δt

[0049] Where E(t) is the unit energy consumption, I(t) is the real-time operating current within the current unit time interval, and V(t) is the fixed operating voltage within the current unit time interval.

[0050] In some alternative implementations, the cleaning brush does not operate at a constant power during actual operation. The system adjusts the current based on the cleaning mode (e.g., standard mode, heavy-duty mode) or cleaning intensity, thereby changing the power. For example, when switching to heavy-duty mode, the control circuit increases the current, causing the motor speed to increase, the torque to increase, the power P to rise, and the energy consumption to increase accordingly. However, not all the electrical energy consumed by the electric cleaning brush is converted into mechanical energy to drive the cleaning head; some electrical energy is converted into heat energy due to resistive losses within the components. This process follows Joule's law Q = I 2 Rt (Q is heat, R is resistance, t is time). The windings inside the motor have resistance; when current flows through them, it generates It. 2 R-loss converts electrical energy into heat. Furthermore, under high load, the current increases, causing a rapid increase in heat generated by the windings. If this heat cannot be dissipated in time, it accumulates inside the equipment, leading to a continuous rise in temperature.

[0051] In some alternative implementations, although electric cleaning brushes are typically equipped with heat dissipation devices to prevent overheating, these devices can dissipate most of the heat under light loads, resulting in minimal heat accumulation. However, under high loads, the heat increases rapidly, and the heat dissipation devices cannot dissipate heat in time, leading to increased heat accumulation. For example, when the cleaning brush is used to clean stubborn stains for an extended period, requiring continuous use of the powerful mode to clean thick grease, the motor operates at high power continuously, generating heat far exceeding the heat dissipation rate. This causes the internal temperature of the device to rise rapidly, and the motor temperature may rise to a dangerous range within half an hour or even less. Therefore, under light load conditions (lower real-time operating current), the impact of unit energy consumption on heat accumulation is relatively minor, while under heavy load conditions (higher real-time operating current), the impact of unit energy consumption on heat accumulation is significant. Therefore, embodiments of the present invention pre-set the correspondence between operating current and weighting coefficients, and determine the weighting coefficient ω(t) corresponding to unit energy consumption based on the real-time operating current during operation.

[0052] Step S103: Perform a weighted summation based on the weighting coefficient and unit energy consumption to obtain the cumulative energy consumption, and determine whether the over-temperature protection mechanism is triggered based on the cumulative energy consumption.

[0053] Specifically, in embodiments of the present invention, such as Figure 2 As shown, after the electric cleaning brush is turned on, it calculates the unit energy consumption E(t) per unit time in real time based on the collected real-time operating current I(t) and fixed operating voltage V(t). It then determines the weighting coefficient ω(t) corresponding to the unit energy consumption E(t) per unit time based on the real-time operating current. Finally, it calculates the real-time cumulative energy consumption E by weighting and summing the unit energy consumption E(t) and weighting coefficient ω(t) for each unit time according to the operating time. 总 Assume that n data samples have been taken from the time the device starts up to the current time, and the time interval between each sample is a unit time Δt. The corresponding calculation formula is as follows:

[0054]

[0055] Using the above formula, the energy consumption at each moment is accumulated differently according to its weighting coefficient: when the equipment is under high load (high current, high weighting coefficient), the energy consumption during this period accounts for a larger proportion of the cumulative value; the energy consumption under low load is included with a smaller weight, thus more realistically reflecting the energy accumulation that actually affects the temperature during equipment operation.

[0056] In some optional implementations, to prevent the electric cleaning brush from overheating, an overheat protection energy threshold is pre-determined based on the device's high-temperature resistance and safety standards. Simultaneously, after the electric cleaning brush starts, the weighted cumulative energy consumption is compared in real-time with the overheat protection energy threshold. Figure 2 As shown, it determines whether the energy consumption generated by the current operation of the equipment has reached a level that may cause a dangerous temperature rise, thereby determining whether the over-temperature protection mechanism should be triggered.

[0057] Step S104: If the over-temperature protection mechanism is triggered, the household appliances will be shut down and cooled down according to the over-temperature protection mechanism.

[0058] Specifically, in this embodiment of the invention, if it is determined that the device is at risk of overheating, the over-temperature protection mechanism is immediately triggered. The corresponding measures for the over-temperature protection mechanism are to reduce the motor speed until it stops, at which point use is directly stopped, but the device's heat dissipation device can remain operational until the temperature drops, at which point operation can resume. Alternatively, the motor voltage or current can be reduced through the control circuit to allow the device to operate in a low-power mode, reducing energy consumption and heat generation to ensure normal user operation. Furthermore, the user can be alerted to the overheating state of the device through flashing indicator lights, buzzer alarms, or push notifications via a mobile app, requiring appropriate measures to be taken; specific measures are not limited here.

[0059] The temperature rise control method provided by this invention acquires the fixed operating voltage and multiple real-time operating currents of the home appliance sequentially according to its running time after startup. It determines the unit energy consumption based on the fixed operating voltage and each real-time operating current, and determines weighting coefficients based on the real-time operating currents. The cumulative energy consumption is obtained by weighted summation. The cumulative energy consumption is then used to determine whether an over-temperature protection mechanism is triggered. If triggered, the operating status of the home appliance is controlled. This invention, based on cumulative energy consumption over running time, considers both the running time factor and real-time monitoring of the energy consumption during the actual operation of the home appliance. It flexibly accumulates real-time consumption differently according to different loads to determine the cumulative energy consumption after the home appliance starts. Since the accumulation of energy consumption directly causes temperature changes, it can accurately identify temperature changes and trigger over-temperature protection in advance, thereby effectively controlling the motor's temperature rise, extending the equipment's service life, and improving the user experience.

[0060] This embodiment provides a temperature rise control method, which can be used in the aforementioned household appliances, such as electric cleaning brushes. Figure 3 This is a flowchart of a temperature rise control method according to an embodiment of the present invention, such as... Figure 3 As shown, the process includes the following steps:

[0061] Step S301: After the home appliance is started, the fixed operating voltage and multiple real-time operating currents of the home appliance are acquired sequentially according to the running time. For details, please refer to [link to relevant documentation]. Figure 1 Step S101 of the illustrated embodiment will not be described again here.

[0062] Step S302: Determine the corresponding unit energy consumption based on the fixed operating voltage and each real-time operating current, and determine the corresponding weighting coefficient based on each real-time operating current.

[0063] Specifically, step S302 includes:

[0064] Step S3021: Calculate the product of fixed operating voltage, real-time operating current and unit time information to obtain the unit energy consumption.

[0065] Step S3022: Determine the weighting coefficient based on the correspondence between the real-time operating current and the predetermined working current and the weighting coefficient.

[0066] Specifically, in this embodiment of the invention, by pre-determining the correspondence between the operating current and the weighting coefficient, and the over-temperature protection energy threshold, the impact of current changes on the operating temperature of the equipment can be accurately investigated. This truly reflects the relationship between the energy and temperature changes of the equipment under different loads, enabling home appliances to automatically adapt weights based on real-time current, accurately quantify the heat contribution of different loads, and achieve dynamic response to the operating status of the equipment. Simultaneously, the cumulative energy demand corresponding to the highest current threshold is set as the over-temperature protection energy threshold. This sets a safety boundary based on the actual withstand capacity of the equipment, while avoiding overly strict threshold settings that could affect normal equipment use or overly lenient threshold settings that could lead to protection failure.

[0067] In some optional implementations, the process of determining the correspondence between the operating current and the weighting coefficient, and the over-temperature protection energy threshold, includes:

[0068] Step a1: Control the motor under test to operate under different working conditions. Under different working conditions, the working voltage is the same, the working current is different, and the working current does not exceed the maximum current threshold.

[0069] Step a2: Obtain the operating temperature of the motor under test during operation and determine whether the operating temperature has reached the maximum temperature threshold.

[0070] Step a3: If the operating temperature reaches the maximum temperature threshold, obtain the cumulative energy demand and cumulative operating time of the tested motor.

[0071] Step a4: Determine the expected weighting coefficients for different operating currents based on the ratio of cumulative energy demand to cumulative operating time under different operating currents.

[0072] Step a5: Fit the working current and the expected weighting coefficients to obtain the fitting coefficients, and determine the correspondence between the working current and the weighting coefficients based on the fitting coefficients.

[0073] Step a6: Use the cumulative energy demand corresponding to the highest current threshold as the over-temperature protection energy threshold.

[0074] Specifically, in this embodiment of the invention, a dedicated test platform is built in a laboratory environment to simulate the operating conditions of the motor under test. A regulated power supply ensures that the motor's operating voltage remains constant throughout different test stages, for example, stabilizing the voltage at 220V. Simultaneously, an adjustable load (such as a resistance box or simulated load device) is used to change the motor's operating current, gradually increasing the load to keep the current within a safe range, and strictly limiting the operating current to not exceeding a pre-set maximum current threshold (e.g., 1.5 times the motor's rated current). Throughout the entire test under each load, the motor's operating status is continuously monitored, its operating temperature is collected, and compared with the maximum temperature threshold. Once the operating temperature reaches the maximum temperature threshold, indicating that the motor is in a critical overheating state, the data recording program is immediately triggered, and the system quickly obtains the motor's cumulative energy demand and cumulative running time at that moment. The cumulative energy demand can be calculated through power integration, that is, integrating the power (P=UI) during motor operation over time, corresponding to the maximum energy required to reach the temperature rise limit under the current operating current; the cumulative running time is determined by the time difference from the start of the test to the current moment.

[0075] In some optional implementations, after obtaining the cumulative energy demand and cumulative running time, the test data under different operating currents are processed separately. In reality, the energy and time required for the motor temperature to reach its maximum temperature are related to the heating and cooling conditions. For example, when the current is low, the motor heats up slowly, and there is ample time for heat dissipation. The more energy required to reach the maximum temperature, the longer the time. Conversely, when the current is high, the motor heats up quickly, and the cooling time is short, resulting in insufficient heat dissipation and less energy required to reach the maximum temperature, and a shorter time. Therefore, this embodiment of the invention, based on the relationship between energy demand and temperature change, uses the energy demand per unit time as a basis, combined with the actual situation when reaching the maximum temperature threshold under that current, and uses the ratio of cumulative energy demand to cumulative running time under different operating currents as the corresponding expected weighting coefficient. For example, under a certain current I1, the motor reaches the maximum temperature threshold after running for t1 time, and the cumulative energy demand is E1. The expected weighting coefficient corresponding to different operating currents is determined based on the ratio of cumulative energy demand to cumulative running time under different operating currents. The calculation formula is as follows:

[0076]

[0077] During the experiment, the operating current can be divided into ranges according to the highest current threshold, for example, the highest current threshold is 4.5A and the step interval is 0.5A. Then, the corresponding expected weight coefficients are determined according to different current ranges. The above process is repeated to obtain a series of expected weight coefficients corresponding to different operating current ranges. Each expected weight coefficient is then normalized, as shown in the table below:

[0078]

[0079] Using different operating current values ​​as the x-axis and the corresponding expected weighting coefficients as the y-axis, mathematical fitting algorithms (such as least squares method, polynomial fitting, etc.) are used to fit the data points in the table above. By continuously adjusting the parameters of the fitting function (i.e., the fitting coefficients), the fitting curve is made as close as possible to all data points, thereby obtaining a function expression that accurately describes the relationship between operating current and weighting coefficients, for example:

[0080] ω(t)=α×I(t).

[0081] Meanwhile, the cumulative energy demand when the motor operates at the highest current threshold to the highest temperature threshold is used as the over-temperature protection energy threshold. Setting the over-temperature protection energy threshold has a dual significance: firstly, based on the motor's actual heat resistance limit and energy consumption data, it accurately reflects the critical energy value at which the equipment may overheat; secondly, it provides a clear safety boundary for equipment operation. When the cumulative energy consumption during equipment operation reaches or exceeds this threshold, the system can promptly trigger the over-temperature protection mechanism to prevent motor damage due to overheating and ensure the safe and stable operation of the equipment.

[0082] Step S303: Perform a weighted summation based on the weighting coefficient and unit energy consumption to obtain the cumulative energy consumption, and determine whether the over-temperature protection mechanism is triggered based on the cumulative energy consumption.

[0083] Specifically, step S303 includes:

[0084] Step S3031: The cumulative energy consumption is obtained by weighting and summing multiple unit energy consumptions and their corresponding weighting coefficients according to the running time.

[0085] Step S3032: Compare the accumulated energy consumption with the preset over-temperature protection energy threshold. If the accumulated energy consumption exceeds the over-temperature protection energy threshold, the over-temperature protection mechanism is triggered.

[0086] Specifically, in this embodiment of the invention, the unit energy consumption E(t) at each time point is multiplied by the corresponding weighting coefficient ω(t), and the cumulative energy consumption E is obtained by summing them up. 总 Meanwhile, the cumulative energy consumption E is [amount missing] with each update. 总 Then, it is compared with the over-temperature protection energy threshold. If the accumulated energy consumption E 总 If the over-temperature protection energy threshold is exceeded, the over-temperature protection mechanism is triggered. Taking the operation of an electric cleaning brush as an example, the real-time operating current of the electric cleaning brush is monitored, and the unit energy consumption is weighted and accumulated in real time to update the accumulated energy consumption. The recorded data is shown in the table below:

[0087]

[0088] For ease of description, statistics are still based on the current range division during the experiment to obtain the actual operating energy consumption in different current ranges, and then a weighted sum is performed. In actual operation, because the preset weighted energy is greater than the over-temperature protection energy threshold of 10, the over-temperature protection mechanism is activated when the cumulative energy consumption exceeds 10, and the actual operation will not reach 10.3.

[0089] Taking the operation of an electric cleaning brush as an example again, the real-time operating current of the electric cleaning brush is monitored, and the unit energy consumption is weighted and accumulated in real time to update the accumulated energy consumption. The recorded data is shown in the table below:

[0090]

[0091] Since the preset weighted energy is greater than the over-temperature protection energy threshold of 10, the total weighted energy is 9.9, which will not trigger the over-temperature protection mechanism. Therefore, the more refined the current range and unit time division, the more precise the control.

[0092] Step S3304: If the over-temperature protection mechanism is triggered, the appliance will be shut down and cooled according to the over-temperature protection mechanism. For details, please refer to [link to relevant documentation]. Figure 1 Step S104 of the illustrated embodiment will not be described again here.

[0093] The temperature rise control method provided by this invention acquires the fixed operating voltage and multiple real-time operating currents of the home appliance sequentially according to its running time after startup. It determines the unit energy consumption based on the fixed operating voltage and each real-time operating current, and determines weighting coefficients based on the real-time operating currents. The cumulative energy consumption is obtained by weighted summation. The cumulative energy consumption is then used to determine whether an over-temperature protection mechanism is triggered. If triggered, the operating status of the home appliance is controlled. This invention, based on cumulative energy consumption over running time, considers both the running time factor and real-time monitoring of the energy consumption during the actual operation of the home appliance. It flexibly accumulates real-time consumption differently according to different loads to determine the cumulative energy consumption after the home appliance starts. Since the accumulation of energy consumption directly causes temperature changes, it can accurately identify temperature changes and trigger over-temperature protection in advance, thereby effectively controlling the motor's temperature rise, extending the equipment's service life, and improving the user experience.

[0094] This embodiment provides a temperature rise control method, which can be used in the aforementioned household appliances, such as electric cleaning brushes. Figure 4 This is a flowchart of a temperature rise control method according to an embodiment of the present invention, such as... Figure 4 As shown, the process includes the following steps:

[0095] Step S401: After the home appliance is started, the fixed operating voltage and multiple real-time operating currents of the home appliance are acquired sequentially according to the running time. For details, please refer to [link to relevant documentation]. Figure 3 Step S301 of the illustrated embodiment will not be described again here.

[0096] Step S402: Determine the corresponding unit energy consumption based on the fixed operating voltage and each real-time operating current, and determine the corresponding weighting coefficient based on each real-time operating current. For details, please refer to [link to relevant documentation]. Figure 3 Step S302 of the illustrated embodiment will not be described again here.

[0097] Step S403: A weighted sum is performed based on the weighting coefficient and unit energy consumption to obtain the cumulative energy consumption. The cumulative energy consumption is then used to determine whether the over-temperature protection mechanism is triggered. For details, please refer to [link to relevant documentation]. Figure 3 Step S303 of the illustrated embodiment will not be described again here.

[0098] Step S404: If the over-temperature protection mechanism is triggered, the appliance will be shut down and cooled according to the over-temperature protection mechanism. For details, please refer to [link to relevant documentation]. Figure 3 Step S304 of the illustrated embodiment will not be described again here.

[0099] Step S405: Accumulate the downtime and determine whether the downtime is greater than the preset time threshold. If it is greater, allow the machine to start; otherwise, force a shutdown.

[0100] Specifically, in this embodiment of the invention, when a household appliance (such as an electric cleaning brush) stops operating due to overheating protection, the built-in timer module immediately starts. Based on a high-precision clock chip, the timer is accurate to the second or even millisecond, continuously recording time from the moment the device stops. The system adds the time increment to the total downtime counter in real time and stores this data in the device's non-volatile memory (such as EEPROM), ensuring that the accumulated downtime data is not lost even if the device is powered off. For example, after the electric cleaning brush automatically stops due to overheating, the timer starts working, and the screen or indicator light can simultaneously display the remaining downtime, allowing users to intuitively understand the device's status. If the accumulated downtime has not reached the preset time threshold, it indicates that the device is still in a high-temperature state, and direct startup may cause component damage or safety hazards. At this time, the system remains locked, prohibiting the user from turning on the device, and informs the user of the reason through audible and visual prompts (such as continuous beeping and a screen display of "Cooling, please wait") until the downtime reaches the threshold.

[0101] In some optional implementations, to ensure that the electric cleaning brush returns to its normal operating temperature when the user restarts it, a time threshold is set. The brush is only allowed to be restarted after the shutdown time exceeds this threshold; otherwise, it remains in a forced shutdown state. For example, a 30-minute time threshold can be set, allowing restarting only after 30 minutes of shutdown. Simultaneously, to shorten the forced shutdown time, the device's cooling system can remain operational during shutdown to accelerate heat dissipation. Temperature can also be monitored, and if the temperature drops to a safe threshold, a notification can be displayed on the screen or by an indicator light. For example, after the electric cleaning brush shuts down due to overheating, if the cumulative shutdown time reaches 35 minutes (exceeding the preset 30-minute threshold), the power button indicator light changes from red to green, prompting the user to restart the device; or, if the temperature is detected to have dropped to the safe threshold, the power button indicator light changes from red to green, prompting the user to restart the device.

[0102] The temperature rise control method provided by this invention acquires the fixed operating voltage and multiple real-time operating currents of the home appliance sequentially according to its running time after startup. It determines the unit energy consumption based on the fixed operating voltage and each real-time operating current, and determines weighting coefficients based on the real-time operating currents. The cumulative energy consumption is obtained by weighted summation. The cumulative energy consumption is then used to determine whether an over-temperature protection mechanism is triggered. If triggered, the operating status of the home appliance is controlled. This invention, based on cumulative energy consumption over running time, considers both the running time factor and real-time monitoring of the energy consumption during the actual operation of the home appliance. It flexibly accumulates real-time consumption differently according to different loads to determine the cumulative energy consumption after the home appliance starts. Since the accumulation of energy consumption directly causes temperature changes, it can accurately identify temperature changes and trigger over-temperature protection in advance, thereby effectively controlling the motor's temperature rise, extending the equipment's service life, and improving the user experience.

[0103] This embodiment also provides a temperature rise control device for implementing the above 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 devices described in the following embodiments are preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0104] This embodiment provides a temperature rise control device, such as... Figure 5 As shown, it includes:

[0105] The information acquisition module 501 is used to acquire the fixed operating voltage and multiple real-time operating currents of the home appliance in sequence according to the running time after the home appliance is started.

[0106] The energy calculation module 502 is used to determine the corresponding unit energy consumption based on the fixed operating voltage and each real-time operating current, and to determine the corresponding weighting coefficient based on each real-time operating current.

[0107] The over-temperature detection module 503 is used to perform a weighted summation based on the weighting coefficient and the unit energy consumption to obtain the cumulative energy consumption, and to determine whether the over-temperature protection mechanism is triggered based on the cumulative energy consumption.

[0108] The over-temperature protection module 504 is used to control the home appliance to shut down and cool down if the over-temperature protection mechanism is triggered.

[0109] In some alternative implementations, the energy calculation module 502 includes:

[0110] The unit energy calculation unit is used to calculate the product of fixed operating voltage, real-time operating current and unit time information to obtain the unit energy consumption.

[0111] The weighting coefficient determination unit is used to determine the weighting coefficients based on the real-time operating current and the pre-determined correspondence between the operating current and the weighting coefficients.

[0112] In some optional implementations, the weighting coefficient determination unit includes:

[0113] The test unit is used to control the motor under test to operate under different working conditions. Under different working conditions, the working voltage is the same, the working current is different, and the working current does not exceed the maximum current threshold.

[0114] The temperature acquisition subunit is used to acquire the operating temperature of the motor under test during operation and to determine whether the operating temperature has reached the maximum temperature threshold.

[0115] The result acquisition subunit is used to acquire the cumulative energy demand and cumulative running time of the tested motor if the operating temperature reaches the maximum temperature threshold.

[0116] The weighting determination sub-unit is used to determine the expected weighting coefficients corresponding to different operating currents based on the ratio of cumulative energy demand to cumulative operating time under different operating currents.

[0117] The relationship fitting sub-unit is used to fit based on the operating current and the desired weight coefficients, obtain the fitting coefficients, and determine the correspondence between the operating current and the weight coefficients based on the fitting coefficients.

[0118] The threshold determination subunit is used to use the cumulative energy demand corresponding to the highest current threshold as the over-temperature protection energy threshold.

[0119] In some alternative implementations, the over-temperature detection module 503 includes:

[0120] The cumulative energy calculation unit is used to perform a weighted summation of multiple unit energy consumptions and their corresponding weighting coefficients according to the running time to obtain the cumulative energy consumption.

[0121] The energy threshold comparison unit is used to compare the accumulated energy consumption with the preset over-temperature protection energy threshold. If the accumulated energy consumption exceeds the over-temperature protection energy threshold, the over-temperature protection mechanism is triggered.

[0122] In some optional implementations, the device further includes a shutdown control module, used to accumulate shutdown time and determine whether the shutdown time is greater than a preset time threshold. If it is greater, the device is allowed to start; otherwise, it is forced to shut down.

[0123] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0124] In this embodiment, the temperature rise control device is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0125] This invention also provides a computer device having the above-described features. Figure 5 The temperature rise control device shown.

[0126] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of a computer device provided in an optional embodiment of the present invention, such as... Figure 6 As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 6 Take a processor 10 as an example.

[0127] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0128] The memory 20 stores instructions executable by at least one processor 10 to cause at least one processor 10 to perform the method shown in the above embodiments.

[0129] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0130] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0131] The computer device also includes an input device 30 and an output device 40. The processor 10, memory 20, input device 30, and output device 40 can be connected via a bus or other means. Figure 6 Taking the example of a connection between China and Israel via a bus.

[0132] Input device 30 can receive input numerical or character information, and generate key signal inputs related to user settings and function control of the computer device, such as a touchscreen, keypad, mouse, trackpad, touchpad, joystick, one or more mouse buttons, trackball, joystick, etc. Output device 40 may include display devices, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibration motors). The aforementioned display devices include, but are not limited to, liquid crystal displays, light-emitting diodes, displays, and plasma displays. In some alternative embodiments, the display device may be a touchscreen.

[0133] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0134] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0135] This invention also provides a household appliance, such as an electric cleaning brush or other electric cleaning products. Figure 7 As shown, it includes: a signal acquisition module for acquiring the real-time operating current and fixed operating voltage of the home appliance; a drive motor for driving the home appliance; and a main control module connected to the signal acquisition module and the drive motor for executing the above-mentioned functions. Figure 1 , Figure 3 or Figure 4 The temperature rise control method shown.

[0136] Specifically, in this embodiment of the invention, the household appliance also includes an operation display module, which provides a user interface to start or stop the cleaning device and displays relevant information about its operation. A signal acquisition module collects the real-time voltage, current, and speed of the motor during operation and feeds these signals back to the main control module. The main control module is used for data storage, control signal issuance, and operation display signal acquisition. It also performs weighted calculations based on the actually collected motor voltage, current, and speed signals, as well as the actual operating time of the motor, to determine the total energy used by the motor to generate heat and affect temperature rise. The drive motor then drives the brush head on the motor shaft to rotate, achieving the cleaning purpose.

[0137] The home appliance provided by this invention can monitor the energy consumption of the home appliance in real time during actual operation, and flexibly accumulate the real-time consumption in a differentiated manner according to different loads to determine the cumulative energy consumption after startup, accurately identify the temperature changes caused by the accumulation of energy consumption, and trigger over-temperature protection in advance, thereby effectively controlling the temperature rise of the motor, extending the service life of the equipment, and improving the user experience.

[0138] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for controlling temperature rise, characterized in that, The method includes: After the home appliance is started, the fixed operating voltage and multiple real-time operating currents of the home appliance are obtained sequentially according to the running time. The corresponding unit energy consumption is determined based on the fixed operating voltage and each real-time operating current, and the corresponding weighting coefficient is determined based on each real-time operating current. The cumulative energy consumption is obtained by weighting and summing the weighting coefficients and the unit energy consumption, and the over-temperature protection mechanism is triggered based on the cumulative energy consumption. If the over-temperature protection mechanism is triggered, the home appliance will be controlled to shut down and cool down according to the over-temperature protection mechanism.

2. The method according to claim 1, characterized in that, The step of determining the corresponding unit energy consumption based on the fixed operating voltage and each real-time operating current, and determining the corresponding weighting coefficient based on each real-time operating current, includes: The unit energy consumption is obtained by multiplying the fixed operating voltage, the real-time operating current, and the unit time information. The weighting coefficient is determined based on the correspondence between the real-time operating current and the predetermined working current and the weighting coefficient.

3. The method according to claim 2, characterized in that, The step of performing a weighted summation based on the weighting coefficient and the unit energy consumption to obtain the cumulative energy consumption, and determining whether to trigger the over-temperature protection mechanism based on the cumulative energy consumption, includes: The cumulative energy consumption is obtained by sequentially weighting and summing multiple unit energy consumptions and their corresponding weighting coefficients according to the running time. The accumulated energy consumption is compared with a preset over-temperature protection energy threshold. If the accumulated energy consumption exceeds the over-temperature protection energy threshold, the over-temperature protection mechanism is triggered.

4. The method according to claim 2, characterized in that, The process of determining the correspondence between the operating current and the weighting coefficient includes: The tested motor is controlled to operate under different working conditions, wherein the working voltage is the same but the working current is different under different working conditions, and the working current does not exceed the maximum current threshold. The operating temperature of the motor under test during operation is obtained, and it is determined whether the operating temperature has reached the maximum temperature threshold. If the operating temperature reaches the maximum temperature threshold, the cumulative energy demand and cumulative operating time of the tested motor are obtained. The expected weighting coefficients for different operating currents are determined based on the ratio of the cumulative energy demand to the cumulative operating time under different operating currents. The operating current and the expected weighting coefficients are fitted to obtain fitting coefficients, and the correspondence between the operating current and the weighting coefficients is determined based on the fitting coefficients.

5. The method according to claim 4, characterized in that, The process of determining the over-temperature protection energy threshold includes: using the cumulative energy demand corresponding to the highest current threshold as the over-temperature protection energy threshold.

6. The method according to claim 1, characterized in that, After controlling the home appliance to shut down and cool down according to the over-temperature protection mechanism, the method further includes: The system accumulates downtime and determines whether the downtime exceeds a preset time threshold. If it does, the system is allowed to power on; otherwise, it is forced to shut down.

7. A temperature rise control device, characterized in that, The device includes: The information acquisition module is used to acquire the fixed operating voltage and multiple real-time operating currents of the home appliance in sequence according to the running time after the home appliance is started. The energy calculation module is used to determine the corresponding unit energy consumption based on the fixed operating voltage and each real-time operating current, and to determine the corresponding weighting coefficient based on each real-time operating current. The over-temperature detection module is used to perform a weighted summation based on the weighting coefficient and the unit energy consumption to obtain the cumulative energy consumption, and to determine whether the over-temperature protection mechanism is triggered based on the cumulative energy consumption. An over-temperature protection module is used to control the home appliance to shut down and cool down according to the over-temperature protection mechanism if the over-temperature protection mechanism is triggered.

8. A computer device, characterized in that, include: A memory and a processor are communicatively connected, the memory stores computer instructions, and the processor executes the temperature rise control method according to any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the temperature rise control method according to any one of claims 1 to 6.

10. A computer program product, characterized in that, Includes computer instructions for causing a computer to execute the temperature rise control method according to any one of claims 1 to 6.

11. A household appliance, characterized in that, include: The signal acquisition module is used to collect the real-time operating current and fixed operating voltage of home appliances; A drive motor, used to drive the operation of the home appliance; The main control module, connected to the signal acquisition module and the drive motor, is used to execute the temperature rise control method according to any one of claims 1 to 6.

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