Connector for delaying electrolytic erosion, base and liquid heating equipment

Abstract

The utility model relates to a connector capable of delaying electrolytic erosion, a base and liquid heating equipment. The connector capable of delaying electrolytic erosion comprises a terminal module and a sampling module connected with the terminal module. The terminal module comprises a first metal terminal CN11 and a second metal terminal CN11. The sampling module comprises a resistor R1, a capacitor C1, a resistor R2, a resistor R3, a sampling signal output port ADout, a first level input port IO1in and a second level input port IO2in. And the resistor R1 is connected between the second metal terminal CN11 and the sampling signal output port ADout. The capacitor C1 is connected between the sampling signal output port ADout and the first metal terminal CN11. And the resistor R3 is connected between the second metal terminal CN11 and the first metal terminal CN11. The purpose of relieving electrolytic erosion is achieved by adjusting the level difference and weakening the electrolytic action when the gaps between the metal terminals are filled with liquid, so that oxidation erosion is reduced, aging of the metal terminals is slowed down, and the risk of poor contact of the connector is reduced.

Description

Technical Field

[0001] This utility model relates to the field of liquid heating equipment technology, and in particular to a connector for delaying electrolytic corrosion, a base, and a liquid heating device. Background Technology

[0002] Currently, most liquid heating equipment uses temperature sensors (such as NTC) to identify water temperature, especially in detachable designs consisting of a container and a base, where the temperature sensor is mounted on the container and the control board is mounted on the base. This temperature sensor not only detects the liquid temperature inside the container but also helps the equipment identify whether the container is on the base (e.g., by determining whether an electrical signal from the temperature sensor is detected). Therefore, a connector (either direct or indirect) for electrically connecting the temperature sensor is typically required on the base.

[0003] The drawback of connectors used to connect temperature sensors in traditional liquid heating equipment is that, due to the involvement of liquid heating (i.e., water-related products), liquid spillage on the connector is inevitable during use. When the connector's metal terminals become wet, the gap between the two metal terminals is filled with liquid, creating conditions for electrolysis. Under electrolysis, the two metal terminals are oxidized and corroded, accelerating their aging and ultimately leading to poor connector contact. Utility Model Content

[0004] Based on this, the present invention provides a connector that delays electrolytic corrosion. The control board of the base can adjust the voltage applied to the first metal terminal CN1_1 and the second metal terminal CN1_2, thereby controlling the voltage difference between the first metal terminal CN1_1 and the second metal terminal CN1_2. By adjusting the voltage difference, the voltage direction can be alternately changed or the voltage difference can be adjusted to 0, thereby weakening the electrolytic effect when the gap between the first metal terminal CN1_1 and the second metal terminal CN1_2 is filled with liquid, thus achieving the purpose of mitigating electrolytic corrosion, reducing oxidation corrosion, slowing down the aging of metal terminals, and reducing the risk of poor connector contact.

[0005] A connector that delays electrolytic corrosion, comprising:

[0006] Terminal module; the terminal module includes: a first metal terminal CN1_1 and a second metal terminal CN1_2; both the first metal terminal CN1_1 and the second metal terminal CN1_2 are used for electrically connecting the temperature sensor of the container; and

[0007] The sampling module is connected to the terminal module. The sampling module includes: resistor R1, capacitor C1, resistor R2, resistor R3, sampling signal output port AD_out, first level input port IO1_in, and second level input port IO2_in. One end of resistor R1 is connected to the second metal terminal CN1_2, and the other end of resistor R1 is connected to the sampling signal output port AD_out. The sampling signal output port AD_out is used to connect to the sampling signal input port of the control board on the base. One end of capacitor C1 is connected to the sampling signal output port AD_out, and the other end of capacitor C1 is connected to the first metal terminal CN1_1. Resistor R1 and capacitor C1 constitute... The sampling signal filtering circuit includes: one end of resistor R2 connected to the second metal terminal CN1_2; one end of resistor R3 connected to the second metal terminal CN1_2, and the other end of resistor R3 connected to the first metal terminal CN1_1; one end of the first level input port IO1_in connected to the end of resistor R2 furthest from the second metal terminal CN1_2, and the other end of the first level input port IO1_in connected to one of the level output ports of the base's control board; one end of the second level input port IO2_in connected to the first metal terminal CN1_1, and the other end of the second level input port IO2_in connected to another level output port of the base's control board.

[0008] The aforementioned connector, designed to delay electrolytic corrosion, connects its terminal module to the container's temperature sensor during operation, establishing an electrical signal transmission loop between the first metal terminal CN1_1 and the second metal terminal CN1_2. The sampling module connects to the base's control board. Resistors R2 and R3, along with the sampling signal output port AD_out, form a voltage divider sampling circuit. This circuit acquires the electrical signal fed back from the temperature sensor, while resistor R1 and capacitor C1 form a filtering circuit for the sampled signal. The first level input port IO1_in and the second level input port IO2_in are connected to the base's control board, thus obtaining two controllable level signals. Through the above design, the control board of the base can adjust the voltage level applied to the first metal terminal CN1_1 and the second metal terminal CN1_2, thereby controlling the voltage level difference between the first metal terminal CN1_1 and the second metal terminal CN1_2. By adjusting the voltage level difference, the voltage direction can be alternately changed or the voltage level difference can be adjusted to 0, which weakens the electrolytic effect when the gap between the first metal terminal CN1_1 and the second metal terminal CN1_2 is filled with liquid, thereby mitigating electrolytic corrosion, reducing oxidation corrosion, slowing down the aging of metal terminals, and reducing the risk of poor connector contact.

[0009] This utility model also provides a base.

[0010] A base includes the aforementioned connector for delaying electrolytic erosion; the base further includes a control board connected to the connector for delaying electrolytic erosion; the control board is respectively connected to the sampling signal output port AD_out, the first level input port IO1_in, and the second level input port IO2_in.

[0011] In operation, the control board of the aforementioned base controls the output levels of the first level input port IO1_in and the second level input port IO2_in, thereby adjusting the levels applied to the first metal terminal CN1_1 and the second metal terminal CN1_2. This controls the level difference between the first metal terminal CN1_1 and the second metal terminal CN1_2. By adjusting the level difference, the voltage direction can be alternately changed or the level difference can be adjusted to 0, weakening the electrolytic effect when the gap between the first metal terminal CN1_1 and the second metal terminal CN1_2 is filled with liquid. This achieves the purpose of mitigating electrolytic corrosion, thereby reducing oxidation corrosion, slowing down the aging of the metal terminals, and reducing the risk of poor connector contact.

[0012] In one embodiment, the control board includes a main control chip (MCU), which has a sampling signal input port AD_in, a first-level output port IO1_out, and a second-level output port IO2_out. The sampling signal input port AD_in is connected to the sampling signal output port AD_out; the first-level output port IO1_out is connected to the first-level input port IO1_in; and the second-level output port IO2_out is connected to the first-level input port IO2_in. Using the main control chip (MCU), both the reception of the sampling signal and the level difference control can be simultaneously achieved. A single chip can meet the requirements, resulting in a simple structure and low cost.

[0013] In one embodiment, the control board includes a main control chip (MCU) and a level control chip (IC) connected to the MCU. The MCU has a sampling signal input port AD_in, which is connected to a sampling signal output port AD_out. The level control chip (IC) has a first level output port IO1_out and a second level output port IO2_out, which are connected to the first level input port IO1_in and the second level output port IO2_out, respectively. When the number of signal ports on the MCU is insufficient, level difference control can be achieved by adding a level control chip (IC).

[0014] This utility model also provides a liquid heating device.

[0015] A liquid heating device includes a base according to any of the above embodiments; the liquid heating device further includes a container detachably connected to the base; the container is provided with a temperature sensor, and the temperature sensor is electrically connected to a first metal terminal CN1_1 and a second metal terminal CN1_2 respectively.

[0016] In operation, the control board of the aforementioned liquid heating device controls the output levels of the first level input port IO1_in and the second level input port IO2_in, thereby adjusting the levels applied to the first metal terminal CN1_1 and the second metal terminal CN1_2. This controls the level difference between the first metal terminal CN1_1 and the second metal terminal CN1_2. By adjusting the level difference, the voltage direction can be alternately changed or the level difference can be adjusted to 0, thereby weakening the electrolytic effect when the gap between the first metal terminal CN1_1 and the second metal terminal CN1_2 is filled with liquid. This achieves the purpose of mitigating electrolytic corrosion, thereby reducing oxidation corrosion, slowing down the aging of metal terminals, and reducing the risk of poor connector contact. Attached Figure Description

[0017] Figure 1 A circuit diagram of a connector for delaying electrolytic corrosion according to one embodiment of the present invention;

[0018] Figure 2 This is a perspective view of the base according to an embodiment of the present utility model;

[0019] Figure 3 This is a perspective view of a liquid heating device according to an embodiment of the present invention.

[0020] The meanings of the labels in the attached diagram are as follows:

[0021] 100 - Liquid heating equipment;

[0022] 10-Base;

[0023] 20-Container. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] like Figure 1 As shown, it is a connector for delaying electrolytic corrosion according to one embodiment of the present invention.

[0031] The connector for delaying electrolytic corrosion includes a terminal module and a sampling module that connects to the terminal module. The terminal module mates with the electrical connection port of the container, establishing an electrical connection between the sampling module and the temperature sensor inside the container. The sampling module connects to the control board of the base, performing two functions: firstly, it collects feedback electrical signals from the container's temperature sensor, filters these signals, and sends them to the control board; secondly, it receives two voltage level signals from the control board, thereby controlling the voltage level difference between the metal terminals on the terminal module, thus controlling the voltage direction and magnitude to mitigate electrolytic corrosion.

[0032] The following text, combined with Figure 1 As shown, taking the circuit schematic as an example, the connector that delays electrolytic corrosion will be further explained.

[0033] like Figure 1 As shown, the terminal module includes a first metal terminal CN1_1 and a second metal terminal CN1_2. Both the first metal terminal CN1_1 and the second metal terminal CN1_2 are used for electrical connection to the temperature sensor of the container.

[0034] like Figure 1 As shown, the sampling module includes: resistor R1, capacitor C1, resistor R2, resistor R3, sampling signal output port AD_out, first level input port IO1_in, and second level input port IO2_in. One end of resistor R1 is connected to the second metal terminal CN1_2, and the other end of resistor R1 is connected to the sampling signal output port AD_out.

[0035] The sampling signal output port AD_out is used to connect to the sampling signal input port of the control board on the base.

[0036] One end of capacitor C1 is connected to the sampling signal output port AD_out, and the other end of capacitor C1 is connected to the first metal terminal CN1_1. Resistor R1 and capacitor C1 constitute the sampling signal filtering circuit.

[0037] One end of resistor R2 is connected to the second metal terminal CN1_2. One end of resistor R3 is connected to the second metal terminal CN1_2, and the other end of resistor R3 is connected to the first metal terminal CN1_1. Resistors R2 and R3 act as voltage divider resistors, forming the basic framework for electrical signal acquisition.

[0038] One end of the first level input port IO1_in is connected to the end of resistor R2 away from the second metal terminal CN1_2. The other end of the first level input port IO1_in is used to connect to one of the level output ports of the control board of the base. One end of the second level input port IO2_in is connected to the first metal terminal CN1_1. The other end of the second level input port IO2_in is used to connect to another level output port of the control board of the base. In traditional designs, the level difference between the two metal terminals is fixed, and the voltage direction is also fixed. Therefore, when liquid fills the gap between the two metal terminals, the two metal terminals will gradually be eroded by electrolysis over time when energized. Therefore, in this solution, the design concept is changed, abandoning the traditional fixed level design concept, and the level difference between the two metal terminals is designed to be adjustable, so that both the magnitude and direction of the voltage between them are adjustable. It should be noted that in this solution, the level adjustment is implemented by the control chip of the control board in the base. This technology is also a common circuit control method in this field. Therefore, this solution does not involve software improvements.

[0039] Brief description of working principle:

[0040] During operation, the terminal module interfaces with the container's temperature sensor, establishing an electrical signal transmission loop between the first metal terminal CN1_1 and the second metal terminal CN1_2. The sampling module interfaces with the base's control board. Resistors R2 and R3, along with the sampling signal output port AD_out, together form a voltage divider sampling circuit. This circuit acquires the electrical signal fed back from the temperature sensor, while resistor R1 and capacitor C1 form a filtering circuit for the sampled electrical signal. The first level input port IO1_in and the second level input port IO2_in are connected to the base's control board, thereby acquiring two controllable level signals.

[0041] In the actual operation of liquid heating equipment, the acquisition of temperature signals is not continuous. Therefore, when it is not necessary to acquire temperature signals, the electrolytic effect between the two metal terminals can be weakened by adjusting the level difference between them.

[0042] For example, using an adjustment method with a level difference of 0: the first level input port IO1_in and the second level input port IO2_in are both input with the same level, assuming both are input at 5V, then the level difference between the two is 0, and the electrolysis effect is greatly weakened (in actual working conditions, it is impossible to achieve absolutely precise level control, and there will still be an extremely small electrolysis effect).

[0043] For example, an alternating voltage direction adjustment method can be used: In the first stage (assuming 10s), the first level input port IO1_in receives 5V, and the second level input port IO2_in receives 0V, resulting in a voltage difference of +5V. In the second stage (assuming 10s), the first level input port IO1_in receives 0V, and the second level input port IO2_in receives 6V, resulting in a voltage difference of -5V. Because the voltage direction is alternating, the transfer of ions during electrolysis can be repeated alternately, effectively weakening electrolytic corrosion.

[0044] The aforementioned connector that delays electrolytic corrosion utilizes a control board on the base to adjust the voltage levels applied to the first metal terminal CN1_1 and the second metal terminal CN1_2. This controls the voltage level difference between the first metal terminal CN1_1 and the second metal terminal CN1_2. By adjusting the voltage level difference, the voltage direction can be alternately changed or the voltage level difference can be adjusted to 0, thereby weakening the electrolytic effect when the gap between the first metal terminal CN1_1 and the second metal terminal CN1_2 is filled with liquid. This achieves the purpose of mitigating electrolytic corrosion, thereby reducing oxidative corrosion, slowing down the aging of the metal terminals, and reducing the risk of poor connector contact.

[0045] like Figure 2 As shown, it is a base 10 of one embodiment of this utility model.

[0046] Combination Figure 1 and Figure 2 As shown, taking the base of an electric kettle as an example, the base 10 includes: a connector for delaying electrolytic corrosion and a control board connected to the connector for delaying electrolytic corrosion. The control board is connected to the sampling signal output port AD_out, the first level input port IO1_in, and the second level input port IO2_in, respectively.

[0047] There are several ways to design a control panel:

[0048] For example, the control board has a main control chip (MCU), which has a sampling signal input port AD_in, a first-level output port IO1_out, and a second-level output port IO2_out. The sampling signal input port AD_in is connected to the sampling signal output port AD_out. The first-level output port IO1_out is connected to the first-level input port IO1_in, and the second-level output port IO2_out is connected to the first-level input port IO2_in. Using the main control chip (MCU), both the reception of the sampling signal and the level difference control can be simultaneously achieved. A single chip can meet the requirements, resulting in a simple structure and low cost.

[0049] For example, the control board includes a main control chip (MCU) and a level control chip IC connected to the MCU. The MCU has a sampling signal input port AD_in. The sampling signal input port AD_in is connected to the sampling signal output port AD_out. The level control chip IC has a first level output port IO1_out and a second level output port IO2_out. The first level output port IO1_out is connected to the first level input port IO1_in, and the second level output port IO2_out is connected to the first level input port IO2_in. When the number of signal ports of the MCU is insufficient, level difference control can be achieved by adding level control chip ICs.

[0050] When the aforementioned base 10 is in operation, the control board controls the output level of the first level input port IO1_in and the second level input port IO2_in, thereby adjusting the level applied to the first metal terminal CN1_1 and the second metal terminal CN1_2, thus controlling the level difference between the first metal terminal CN1_1 and the second metal terminal CN1_2. By adjusting the level difference, the voltage direction can be alternately changed or the level difference can be adjusted to 0, weakening the electrolytic effect when the gap between the first metal terminal CN1_1 and the second metal terminal CN1_2 is filled with liquid, thereby mitigating the purpose of electrolytic corrosion, reducing oxidation corrosion, slowing down the aging of metal terminals, and reducing the risk of poor connector contact.

[0051] like Figure 3 As shown, it is a liquid heating device 100 according to an embodiment of the present invention.

[0052] Combination Figures 1 to 3 As shown, taking an electric kettle as an example, the liquid heating device 100 includes: a base 10 and a container 20 detachably connected to the base 10. The container 20 is equipped with a temperature sensor, and the temperature sensor is electrically connected to a first metal terminal CN1_1 and a second metal terminal CN1_2 respectively.

[0053] When the aforementioned liquid heating device 100 is in operation, the control board controls the output level of the first level input port IO1_in and the second level input port IO2_in, thereby adjusting the level applied to the first metal terminal CN1_1 and the second metal terminal CN1_2, thus controlling the level difference between the first metal terminal CN1_1 and the second metal terminal CN1_2. By adjusting the level difference, the voltage direction can be alternately changed or the level difference can be adjusted to 0, thereby weakening the electrolytic effect when the gap between the first metal terminal CN1_1 and the second metal terminal CN1_2 is filled with liquid, achieving the purpose of mitigating electrolytic corrosion, thereby reducing oxidation corrosion, slowing down the aging of metal terminals, and reducing the risk of poor connector contact.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A connector for delaying electrolytic attack, characterized by, The application relates to a connector for delaying electrolytic corrosion. The terminal module comprises a first metal terminal CN1_1 and a second metal terminal CN1_2; the first metal terminal CN1_1 and the second metal terminal CN1_2 are both used for electrically connecting a temperature sensor of a container; and The sampling module connected with the terminal module comprises a resistor R1, a capacitor C1, a resistor R2, a resistor R3, a sampling signal output port AD_out, a first level input port IO1_in and a second level input port IO2_in; one end of the resistor R1 is connected with the second metal terminal CN1_2, and the other end of the resistor R1 is connected with the sampling signal output port AD_out; the sampling signal output port AD_out is used for connecting a sampling signal input port of a control panel of a base; one end of the capacitor C1 is connected with the sampling signal output port AD_out, and the other end of the capacitor C1 is connected with the first metal terminal CN1_1; the resistor R1 and the capacitor C1 constitute a sampling signal filter circuit; one end of the resistor R2 is connected with the second metal terminal CN1_2; one end of the resistor R3 is connected with the second metal terminal CN1_2, and the other end of the resistor R3 is connected with the first metal terminal CN1_1; one end of the first level input port IO1_in is connected with the end of the resistor R2 far away from the second metal terminal CN1_2, and the other end of the first level input port IO1_in is used for connecting one level output port of the control panel of the base; one end of the second level input port IO2_in is connected with the first metal terminal CN1_1, and the other end of the second level input port IO2_in is used for connecting another level output port of the control panel of the base. The application further relates to a connector for delaying electrolytic corrosion, which comprises the terminal module and the sampling module; and the base further comprises a control panel connected with the connector for delaying electrolytic corrosion; the control panel is connected with the sampling signal output port AD_out, the first level input port IO1_in and the second level input port IO2_in respectively.

2. A base, characterized in that The control panel is provided with a main control chip MCU, and the main control chip MCU is provided with a sampling signal input port AD_in, a first level output port IO1_out and a second level output port IO2_out; the sampling signal input port AD_in is connected with the sampling signal output port AD_out; the first level output port IO1_out is connected with the first level input port IO1_in, and the second level output port IO2_out is connected with the second level input port IO2_in.

3. The base of claim 2, wherein, ​ 4. The base of claim 2, wherein, The control panel is provided with a main control chip MCU and a level control chip IC connected with the main control chip MCU; the main control chip MCU is provided with a sampling signal input port AD_in; the sampling signal input port AD_in is connected with the sampling signal output port AD_out; the level control chip IC is provided with a first level output port IO1_out and a second level output port IO2_out; the first level output port IO1_out is connected with the first level input port IO1_in, and the second level output port IO2_out is connected with the first level input port IO2_in.

5. A liquid heating appliance characterised in that, The liquid heating apparatus further comprises a container detachably connected with the base; the container is provided with a temperature sensor, and the temperature sensor is electrically connected with the first metal terminal CN1_1 and the second metal terminal CN1_2 respectively.

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