Temperature measurement module, temperature measurement system and electric kettle

Abstract

The utility model provides a temperature measuring module, a temperature measuring system and an electric kettle, which are used for measuring the temperature of fluid in a container, the container is provided with an accommodating cavity for storing the fluid, and the temperature measuring module comprises at least two paths of temperature sensors which are separated from each other and a heat transfer piece which is connected with the at least two paths of temperature sensors; wherein at least one temperature sensor is used for measuring the first temperature of a target temperature measuring point on the container, at least another temperature sensor is used for measuring the second temperature of the container away from the target temperature measuring point, and the first temperature and the second temperature are used for determining the temperature of the fluid in the containing cavity. The heat transfer efficiency of the heat transferred to the two temperature sensors through the heat transfer piece is consistent, so that the temperature between the two temperature sensors diffuses in a gradient mode, and the deep water temperature of water in the electric kettle can be directly calculated by detecting the temperature, measured by the two temperature sensors, of a measuring point outside the electric kettle. The accuracy of the water temperature in the electric kettle is improved, and the manufacturing process of the electric kettle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement, in particular to a temperature measurement module, a temperature measurement system and an electric kettle. Background Art

[0002] The electric kettle is one of the common household appliances. It can heat water in a short time and provide the hot water required by users. Its ease of use is crucial.

[0003] Traditional electric kettles typically automatically shut off when water reaches 100°C. However, in situations where high pressure or other factors can cause the boiling point of water to fluctuate, the boiling point of water can drop below 100°C, preventing the system from automatically shutting off when the water boils. Furthermore, some smart kettles incorporate temperature sensors that can sense the water temperature in real time and automatically shut off when the preset temperature is reached. However, because the temperature measurement point is located outside the kettle, the measured water temperature differs significantly from the actual temperature and cannot accurately reflect the true temperature of the water inside. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a temperature measurement module, a temperature measurement system and an electric kettle, which solve the problem of inaccurate water temperature accuracy in the induction electric kettle in the prior art.

[0005] In a first aspect, the present application provides a temperature measurement module for measuring the temperature of a fluid in a container, wherein the container is provided with a cavity for storing the fluid, and the temperature measurement module includes at least two temperature sensors separated from each other, and a heat transfer element connected to the at least two temperature sensors; wherein at least one temperature sensor is used to measure a first temperature of a target temperature measurement point on the container, and at least another temperature sensor is used to measure a second temperature of the container away from the target temperature measurement point, and the first temperature and the second temperature are used to determine the temperature of the fluid in the cavity.

[0006] In one embodiment, the temperature measurement module includes a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged close to the outer wall of the container for measuring the first temperature, and the second temperature sensor is arranged away from the cavity for measuring the second temperature.

[0007] In one embodiment, the heat transfer element includes a first circuit board, a sealed accommodating cavity is provided in the first circuit board, and the first temperature sensor and the second temperature sensor are respectively connected to inner cavity walls on opposite sides of the accommodating cavity.

[0008] In one embodiment, the heat transfer element includes a second circuit board, and the first temperature sensor and the second temperature sensor are connected to the same side surface of the second circuit board.

[0009] In one embodiment, the temperature measurement module further includes at least one third temperature sensor, wherein:

[0010] The third temperature sensor is connected to the third plate and is disposed in the accommodating cavity;

[0011] Alternatively, the third temperature sensor is connected to the second outer surface and is located between the first temperature sensor and the second temperature sensor.

[0012] In one embodiment, the present invention further comprises: at least two signal lines for signal transmission are led out, and the signal lines are used for signal transmission between the first temperature sensor and the second temperature sensor.

[0013] In one embodiment, the plurality of temperature sensors are arranged in an array along the same straight line.

[0014] In the second aspect, the present application provides a temperature measurement system, comprising the temperature measurement module described in any one of the first aspects, and also comprising a data processing module electrically connected to the temperature sensor of the temperature measurement module, wherein the data processing module is used to determine the water temperature in the cavity based on the first temperature and the second temperature.

[0015] In a third aspect, the present application provides an electric kettle, comprising the temperature measurement system described in the second aspect, wherein the electric kettle is provided with at least one temperature measurement point, and each temperature measurement point is provided with a temperature measurement module.

[0016] In one embodiment, it further includes a kettle body and a heating base, the cavity is formed by the kettle body and the heating base, and the temperature measuring point is set in the positive projection area of ​​the cavity on the outer surface of the kettle body and / or the heating base.

[0017] In the temperature measurement module, temperature measurement system and electric kettle of the embodiments of the present application, the heat is transferred to the two temperature sensors through the heat transfer element with consistent heat transfer efficiency, resulting in the temperature between the two temperature sensors being diffused in a gradient. The deep water temperature of the water in the electric kettle can be calculated directly outside the electric kettle by detecting the temperature of the measurement points measured by the two temperature sensors, thereby improving the accuracy of the water temperature in the electric kettle and reducing the manufacturing process of the electric kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1This is a structural diagram of the temperature measurement module in the first embodiment of this application.

[0020] Figure 2 This is a structural diagram of another temperature measurement module in the first embodiment of the present application.

[0021] Figure 3 This is a structural diagram of the temperature measurement module in the second embodiment of this application.

[0022] Figure 4 This is a structural diagram of another temperature measurement module in the second embodiment of the present application.

[0023] Figure 5 This is a schematic diagram of the external structure of the temperature measurement module in the first embodiment and / or the second embodiment of the present application.

[0024] Figure 6 This is a schematic structural diagram of the electric kettle in the first embodiment and / or the second embodiment of the present application.

[0025] Figure 7 This is the temperature rise curve between the calculated water temperature and the actual water temperature of the temperature measurement system in the first embodiment of this application.

[0026] Figure 8 This is the error curve between the calculated water temperature and the actual water temperature of the temperature measurement system in the first embodiment of this application.

[0027] Among them: 10. Temperature measurement module; 11. First temperature sensor; 12. Second temperature sensor; 13. First circuit board; 131. First board; 132. Second board; 133. Third board; 14. Second circuit board; 141. First outer surface; 142. Second outer surface; 15. Third temperature sensor; 20. Electric kettle; 21. Kettle body; 22. Heating base; 23. Cavity. DETAILED DESCRIPTION

[0028] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0030] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0031] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0032] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0033] Kettles are common household appliances, and their usability is crucial. Traditional kettles primarily utilize the material's temperature-sensing properties and mechanical design to automatically shut off the power. This method is simple and easy to implement, but its applicability is limited. For example, the mechanical design and material selection are targeted at specific temperatures, making it impossible to set the water temperature to any desired setting. For example, when the boiling point changes at different altitudes, such kettles will not automatically shut off. Smart kettles, with integrated temperature-sensing chips, can sense the water temperature in real time and produce water at any desired temperature. However, current technology relies on point temperature testing, meaning the sensor can only monitor the temperature at that point and cannot accurately reflect the water temperature within the kettle. Furthermore, some kettles require a hole in the chassis that extends into the kettle to accurately determine the water temperature, complicating the manufacturing process and increasing costs.

[0034] First embodiment

[0035] like Figure 1-2 as well as Figure 5-8 As shown, this embodiment provides a temperature measuring module 10 for measuring the temperature of a fluid in a container. The container is provided with a cavity 23 for storing the fluid. The temperature measuring module 10 includes at least two temperature sensors separated from each other, and a heat transfer element connected to the at least two temperature sensors; wherein, at least one temperature sensor is used to measure a first temperature of a target temperature measurement point on the container, and at least another temperature sensor is used to measure a second temperature of the container away from the target temperature measurement point. The first temperature and the second temperature are used to determine the temperature of the fluid in the cavity 23.

[0036] In the temperature measurement module 10 of this embodiment, since the two temperature sensors are connected to the same heat transfer element, the heat transfer efficiency of the heat transferred to the two temperature sensors through the heat transfer element is consistent, resulting in the temperature between the two temperature sensors being diffused in a gradient. The deep water temperature of the water in the container can be calculated directly outside the electric kettle by detecting the temperature of the measurement points measured by the two temperature sensors, thereby improving the accuracy of the water temperature in the container and reducing the manufacturing process of the container.

[0037] In the following description, the container is taken as an example of an electric kettle 20, but it should be noted that the container is not limited to the electric kettle 20, but can also be a heating appliance such as an electric rice cooker, a health pot, a soy milk maker, or a non-electric heating container for gas heating, steam heating, etc.

[0038] In one embodiment, the temperature measurement module 10 includes a first temperature sensor 11 and a second temperature sensor 12. The first temperature sensor 11 is arranged close to the outer wall of the container for measuring the first temperature, and the second temperature sensor 12 is arranged away from the cavity 23 for measuring the second temperature.

[0039] In this embodiment, the target temperature measurement point is a point close to the outer wall or bottom plate of the electric kettle. The first temperature is the surface temperature T1 of the electric kettle, and the second temperature is the ambient temperature T2 outside the electric kettle. When the position of the target temperature measurement point changes, the meanings represented by the first temperature and the second temperature will also change accordingly. After obtaining the surface temperature T1 and the ambient temperature T2 respectively through the first temperature sensor 11 and the second temperature sensor 12, the deep temperature T of the water in the cavity 23 can be obtained by the following formula: c :

[0040] T c =T1+k(T1-T2)

[0041] Among them, (T1-T2) reflects the temperature change gradient, which can compensate for the temperature gradient loss between the water temperature measurement point in the electric kettle 20 and the temperature measurement point of the first temperature sensor 11. k is a model parameter, which is related to factors such as the material, thickness and shape of the electric kettle 20. By collecting a large amount of data, the model parameter k can be calculated using a self-calibration method (the self-calibration method is introduced in detail below).

[0042] like Figure 1 and Figure 2 As shown, in one embodiment, the heat transfer element includes a first circuit board 13, a sealed accommodating cavity (not shown) is provided in the first circuit board 13, and the first temperature sensor 11 and the second temperature sensor 12 are respectively connected to the inner cavity walls on opposite sides of the accommodating cavity.

[0043] Furthermore, the first circuit board 13 includes a first plate body 131 and a second plate body 132 arranged opposite to each other, and a third plate body 133 connecting the first plate body 131 and the second plate body 132. The first plate body 131 is attached to the outer surface of the container, the first temperature sensor 11 is connected to the side of the first plate body 131 away from the container, and the second temperature sensor 12 is connected to the side of the second plate body 132 close to the first plate body 131.

[0044] In this embodiment, the first temperature sensor 11 and the second temperature sensor 12 are encapsulated in the first circuit board 13. The first circuit board 13 adopts a packaged structure, which has good stability and safety. The first temperature sensor 11 and the second temperature sensor 12 can be highly integrated, which facilitates the mass production of the temperature measurement module 10.

[0045] In this embodiment, at least two signal lines for signal transmission are led out, and the signal lines are used for signal transmission between the first temperature sensor 11 and the second temperature sensor 12. Figure 5 As shown, the temperature measurement module 10 of this embodiment has at least two signal lines for signal transmission, which facilitates signal transmission between the first temperature sensor 11 and the second temperature sensor 12.

[0046] In one embodiment, multiple temperature sensors are arranged in an array along the same straight line.

[0047] When the electric kettle 20 is heated, the heat generated passes through the outer body of the electric kettle 20 and diffuses outward. During the process of heat diffusion outward, the heat first passes through the first plate body 131 of the first circuit board 13 and is conducted to the first temperature sensor 11, and then the heat is conducted along the third plate body 133 to the second plate body 132. Finally, the second temperature sensor 12 receives the heat conducted by the second plate body 132. Since the first temperature sensor 11 and the second temperature sensor 12 are arranged in an array, the heat decreases gradually during the conduction process, that is, the heat forms a stepped temperature gradient between the first temperature sensor 11 and the second temperature sensor 12. The deep water temperature in the container and the boiling point can be calculated through the temperature, temperature change rate, temperature difference and temperature difference change rate of the first temperature sensor 11 and the second temperature sensor 12.

[0048] like Figure 2 As shown, the temperature measurement module 10 further includes at least one third temperature sensor 15, wherein the third temperature sensor 15 is connected to the third plate 133 and disposed within the accommodation cavity. In this embodiment, since the temperature decreases in a step-by-step manner during the conduction from the first temperature sensor 11 to the second temperature sensor 12, the addition of the third temperature sensor 15 to obtain at least one intermediate value between the surface temperature T1 and the ambient temperature T2 can improve the measurement accuracy of the temperature measurement module 10.

[0049] In this embodiment, a plurality of first circuit boards 13 can be stacked and connected along the extension direction of the temperature sensor, and a plurality of third temperature sensors 15 can be arranged between the first temperature sensor 11 and the second temperature sensor 12. When the plurality of temperature sensors are arranged in an array along the same straight line, the temperature data measured by the plurality of temperature sensors is closest to the heat diffusion direction, and the measurement accuracy is higher. Based on the above-mentioned temperature measurement module 10, this embodiment also provides a temperature measurement system, including the above-mentioned temperature measurement module 10, and also including a data processing module electrically connected to the temperature sensor of the temperature measurement module 10, the data processing module is used to determine the water temperature in the cavity 23 based on the surface temperature and the ambient temperature. In this embodiment, the data processing module is provided with a boiling point judgment model, which can determine the water temperature in the cavity 23 based on the surface temperature and the ambient temperature.

[0050] like Figure 6 As shown, based on the above-mentioned temperature measuring module 10, this embodiment further provides an electric kettle 20, which includes the above-mentioned temperature measuring module 10. The electric kettle 20 is provided with at least one temperature measuring point, and each temperature measuring point is provided with a temperature measuring module 10.

[0051] In order to improve the accuracy of obtaining the water temperature in the water cavity, multiple temperature measuring points can be arranged on the surface of the electric kettle 20, and the deep temperature T measured by the multiple temperature measuring points can be calculated. c The average value can more accurately reflect the water temperature inside the electric kettle 20. In addition, since the temperature diffusion is also related to the thickness and material of the kettle body 21 of the electric kettle 20, the deep temperature T of multiple temperature measurement points can also be c The weighted average of is taken as the water temperature in the electric kettle 20.

[0052] In one embodiment, the electric kettle 20 further includes a kettle body 21 and a heating base 22, and the cavity 23 is formed by the kettle body 21 and the heating base 22, and the temperature measuring point is arranged within the positive projection area of ​​the cavity 23 on the outer surface of the kettle body 21 and / or the heating base 22.

[0053] In this embodiment, the kettle body 21 is usually made of glass or metal. In order to improve the accuracy of the measurement data, the temperature measuring point is preferably a position that can contact water or a position that can directly contact water through an essential medium (such as the four temperature measuring points a, b, c, and d on the kettle body 21 and the chassis). When the temperature measuring point is set in the positive projection area of ​​the cavity 23 within the outer surface of the kettle body 21 and / or the heating chassis 22, the water in the cavity 23 can be directly guided to the first temperature sensor 11 and the second temperature sensor 12 through only a layer of heat-conducting medium, thereby reducing the energy loss during heat conduction.

[0054] As described above, the electric kettle 20 can perform self-calibration according to its own state. The steps of the self-calibration method are as follows:

[0055] 1) Determine whether to enter calibration mode using the preset judgment rules in the kettle (typical judgment rules include: whether the kettle has been used for more than a fixed number of times, such as using more than 500 times to determine that calibration mode is required, or the boiling judgment algorithm determines that the water temperature at the boiling point deviates significantly from the historical kettle temperature. It is understandable that the above judgment method can be adaptively adjusted according to user needs);

[0056] 2) After entering the calibration mode, the program parameters are automatically modified, such as the boiling time, which is extended to 1 minute;

[0057] 3) Determine whether the boiling conditions are met according to the boiling algorithm;

[0058] 4) After reaching the boiling condition, the power is not turned off immediately, but the duration of the boiling time is extended in the calibration mode;

[0059] 5) According to the algorithm to estimate the temperature and sensor temperature, the table is used to obtain the current possible real water temperature T c (The default is usually 100°C);

[0060] 6) Set the actual water temperature T c , surface temperature T1 and ambient temperature T2 are substituted into the following formula to obtain the algorithm parameter k:

[0061] In step 3), feature extraction is performed based on the surface temperature T1 and the ambient temperature T2 measured by the first sensor temperature and the second sensor temperature, and boiling point identification is performed using machine learning or deep learning, specifically including the following steps:

[0062] Step S1: Select the data of the preset time window according to the formula Determine the derivative T1' of the surface temperature T1 and the derivative T2' of the ambient temperature T2 respectively (usually five temperature measurement points are taken on the electric kettle, and the position and number of the temperature measurement points can be adaptively adjusted according to usage requirements);

[0063] Step S2: Select the data of the preset time window according to the formula Determine the mean value of the surface temperature T1 respectively and the mean of ambient temperature T2

[0064] Step S3: Selecting data from a preset time window and determining the temperature difference ΔT between the surface temperature T1 and the ambient temperature T2 according to the formula ΔT=f1(T1, T2)=T1-T2;

[0065] Step S4: selecting the temperature difference data ΔT in a preset time window and performing derivative calculation with respect to time t to determine the derivative ΔT′ of the temperature difference ΔT;

[0066] Step S5: Through T1', T2', ΔT and ΔT' utilize machine learning tools (such as decision trees, support vector machines, linear regression classifiers, and other machine learning tools) to train and test the boiling point judgment model and obtain the corresponding model parameter k. The model parameter k is written into the data processing module together with the boiling point judgment model to facilitate boiling point judgment under actual working conditions.

[0067] In step S5, the training data is:

[0068] Wherein Y is the water temperature data obtained by directly measuring the water temperature in the electric kettle 20;

[0069] The test data is:

[0070] During the actual experiment, the temperature measuring module 10 at the temperature measuring point c was tested. In order to determine the accuracy of the boiling point determination of the temperature measuring module 10, another temperature sensor was directly placed in the water of the electric kettle 20 to directly measure the actual water temperature in the cavity 23.

[0071] like Figure 7 and Figure 8 As shown in the figure, during the water boiling process, the temperature rise curve and error curve between the calculated water temperature and the actual water temperature of the temperature measurement system are shown. During the entire heating process, the prediction error remains within 1.5℃.

[0072] In step S5, under normal circumstances, the boiling point of water is 100°C. However, when atmospheric pressure changes, the boiling point of water will also change. Therefore, it cannot be simply assumed that water will boil only when the temperature reaches 100°C. When determining the boiling point, a comprehensive boiling determination is made by combining the water temperature and the trend of the water temperature rise rate to meet the needs of different situations.

[0073] To determine whether the water is boiling, you can use the following method:

[0074] Step S10: Determine the average value of the measured surface temperature T1 Whether the surface temperature threshold is reached, and the average value of the ambient temperature T2 Whether the ambient temperature thresholds are reached;

[0075] Step S20: When step S10 is satisfied, determine whether the calculated derivative T1' of the surface temperature T1 is lower than the surface temperature change rate threshold, whether the derivative T2' of the ambient temperature T2 is lower than the ambient temperature change rate threshold, and whether the derivative ΔT' of the temperature difference ΔT is lower than the temperature difference change rate threshold.

[0076] Step S30: When the conditions in step S20 are met, it can be determined that the water in the kettle has reached the boiling point.

[0077] To verify the temperature measurement efficiency of the temperature measurement system in this embodiment, eighteen tests were performed at different temperature measurement points on the electric kettle 20. The specific results are shown in the following table:

[0078] Delay 5s 10s quantity 9 / 18 18 / 18 Proportion 50％ 100％

[0079] After eighteen rounds of testing, nine trials had a delay of less than 5 seconds, accounting for 50% of the total number of trials, and eighteen trials had a delayed response time of less than 10 seconds, for a response success rate of 100%. This means that the temperature measurement system of this embodiment can timely predict the water boiling temperature and issue a water boiling alarm with a delay time of less than 10 seconds, indicating that the temperature measurement device of this embodiment is close to the actual water temperature and can accurately determine the boiling point.

[0080] Second embodiment

[0081] Based on the temperature measurement module 10 in the first embodiment, this embodiment further provides another temperature measurement module 10, which is different from the temperature measurement module 10 in the first embodiment in that:

[0082] like Figure 2-6 As shown, the heat transfer element includes a second circuit board 14 , and the first temperature sensor 11 and the second temperature sensor 12 are connected to the same side surface of the second circuit board 14 .

[0083] like Figure 2 As shown, the second circuit board 14 includes an adjacent first outer surface 141 and a second outer surface 142, the first outer surface 141 abuts the electric kettle 20, the first temperature sensor 11 and the second temperature sensor 12 are connected to the second outer surface 142, and the first temperature sensor 11 directly abuts the electric kettle 20.

[0084] In this embodiment, the second circuit board 14 is an unpackaged circuit board structure. The first temperature sensor 11 and the second temperature sensor 12 are both soldered to the same side surface of the circuit board. The first temperature sensor 11 directly contacts the kettle body 21 or the heating base 22 of the electric kettle 20. Heat is transferred directly to the first temperature sensor 11 through the kettle body 21 or the heating base 22 of the electric kettle 20. Furthermore, because the first outer surface 141 of the second circuit board 14 directly contacts the electric kettle 20, heat loss from the electric kettle 20 to the second circuit board 14 is minimal. Heat is more effectively conducted along the second circuit board 14 to the second temperature sensor 12, ensuring that the temperature measurement module 10 has high temperature conduction efficiency and, in turn, good temperature measurement accuracy.

[0085] In addition, to prevent the heat of the first temperature sensor 11 from diffusing outward, a relatively wide distance (at least a distance equal to the length of the first temperature sensor 11 ) is provided between the second temperature sensor 12 and the first temperature sensor 11 .

[0086] like Figure 3 As shown, in one embodiment, the temperature measurement module 10 further includes at least one third temperature sensor 15 , wherein the third temperature sensor 15 is connected to the second outer surface 142 and is located between the first temperature sensor 11 and the second temperature sensor 12 .

[0087] In this embodiment, since the temperature decreases step by step during the conduction process from the first temperature sensor 11 to the second temperature sensor 12, the measurement accuracy of the temperature measurement module 10 can be improved by adding the third temperature sensor 15 to obtain at least one intermediate value between the surface temperature and the ambient temperature.

[0088] In one embodiment, multiple temperature sensors are arranged in an array along the same straight line. In this embodiment, a third temperature sensor 15 can be inserted directly between the first temperature sensor 11 and the second temperature sensor 12. Alternatively, multiple second circuit boards 14 can be connected in the direction in which the temperature sensors extend, with multiple third temperature sensors 15 positioned between the first temperature sensor 11 and the second temperature sensor 12. When multiple temperature sensors are arranged in an array along the same straight line, the temperature data measured by the multiple temperature sensors closely aligns with the heat diffusion direction, resulting in higher measurement accuracy.

[0089] Based on the aforementioned temperature measurement module 10, this embodiment further provides a temperature measurement system, comprising the aforementioned temperature measurement module 10 and a data processing module electrically connected to the temperature sensor of the temperature measurement module 10. The data processing module is configured to determine the water temperature within the cavity 23 based on the first temperature and the second temperature. In this embodiment, the data processing module is provided with a boiling point determination model, which can determine the water temperature within the cavity 23 based on the first temperature and the second temperature.

[0090] Based on the above-mentioned temperature measuring module 10 , this embodiment further provides an electric kettle 20 , which includes the above-mentioned temperature measuring module 10 . The electric kettle 20 is provided with at least one temperature measuring point, and each temperature measuring point is provided with a temperature measuring module 10 .

[0091] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0092] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention are intended to be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A temperature measurement module (10) for measuring the temperature of a fluid in a container, wherein the container is provided with a cavity (23) for storing the fluid, characterized in that: The temperature measurement module (10) includes at least two temperature sensors separated from each other, and a heat transfer element connected to the at least two temperature sensors; wherein at least one temperature sensor is used to measure a first temperature of a target temperature measurement point on the container, and at least another temperature sensor is used to measure a second temperature of the container away from the target temperature measurement point, and the first temperature and the second temperature are used to determine the temperature of the fluid in the cavity (23).

2. The temperature measurement module (10) according to claim 1, characterized in that The temperature measurement module (10) comprises a first temperature sensor (11) and a second temperature sensor (12), wherein the first temperature sensor (11) is arranged close to the outer wall of the container and is used to measure the first temperature, and the second temperature sensor (12) is arranged away from the cavity (23) and is used to measure the second temperature.

3. The temperature measurement module (10) according to claim 2, characterized in that: The heat transfer element comprises a first circuit board (13), a sealed accommodating cavity is provided in the first circuit board (13), and the first temperature sensor (11) and the second temperature sensor (12) are respectively connected to the inner cavity walls on opposite sides of the accommodating cavity.

4. The temperature measurement module (10) according to claim 3, characterized in that The heat transfer element comprises a second circuit board (14), and the first temperature sensor (11) and the second temperature sensor (12) are connected to the same side surface of the second circuit board (14).

5. The temperature measurement module (10) according to claim 4, characterized in that: The temperature measurement module (10) further includes at least one third temperature sensor (15), wherein: The first circuit board (13) includes a third board body (133), and the third temperature sensor (15) is connected to the third board body (133) and is disposed in the accommodating cavity; Alternatively, the third temperature sensor (15) is connected to the second outer surface (142) and is located between the first temperature sensor (11) and the second temperature sensor (12).

6. The temperature measurement module (10) according to claim 3 or 4, characterized in that: Also includes: At least two signal lines for signal transmission are led out, and the signal lines are used for signal transmission between the first temperature sensor (11) and the second temperature sensor (12).

7. The temperature measurement module (10) according to claim 1, characterized in that The multiple temperature sensors are arranged in an array along the same straight line.

8. A temperature measurement system, characterized in that: The temperature measuring module (10) comprises the temperature measuring module (10) according to any one of claims 1 to 7, and further comprises a data processing module electrically connected to the temperature sensor of the temperature measuring module (10), the data processing module being used to receive the first temperature sent by the first temperature sensor (11) and the second temperature sent by the second temperature sensor (12).

9. An electric kettle (20), characterized in that: The temperature measuring system according to claim 8 is included, wherein the electric kettle (20) is provided with at least one temperature measuring point, and each temperature measuring point is provided with a temperature measuring module (10).

10. The electric kettle (20) according to claim 9, characterized in that: The invention also comprises a kettle body (21) and a heating base (22), wherein the container cavity (23) is formed by enclosing the kettle body (21) and the heating base (22), and the temperature measuring point is arranged in the positive projection area of ​​the container cavity (23) on the outer surface of the kettle body (21) and / or the heating base (22).

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