Temperature control plug

Abstract

The utility model discloses a temperature control plug, comprising a housing provided with an accommodating cavity; the first power supply pin is connected with a first power line used for supplying power to an external load and comprises a first end and a second end, the first end of the first power supply pin is located in the accommodating cavity, and the second end of the first power supply pin extends out of the accommodating cavity; the second power supply pin is connected with a second power line used for supplying power to an external load and comprises a first end and a second end, the first end of the second power supply pin is located in the accommodating cavity, the second end of the second power supply pin extends out of the accommodating cavity, and the second power supply pin and the first power supply pin are arranged at an interval; a control circuit board; and the temperature sensing element is arranged in the accommodating cavity, is electrically connected with the control circuit board and is used for detecting the temperature of the first power supply pin. According to the utility model, the problem that the socket or the plug is burnt out due to over-high temperature of the plug can be effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to a temperature control plug. Background Technology

[0002] Currently, most electronic products are powered or charged by connecting a plug to a power outlet. When the plug and power outlet make poor contact, the plug may overheat, potentially burning out the outlet or the plug. Utility Model Content

[0003] The purpose of this invention is to solve the problem that poor contact between the plug and the power socket can lead to overheating of the plug, thereby burning out the socket or plug. This invention provides a temperature-controlled plug, which can effectively solve the problem of overheating causing damage to the socket or plug.

[0004] To solve the above-mentioned technical problems, an embodiment of this utility model discloses a temperature control plug, comprising:

[0005] The shell has a receiving cavity;

[0006] A first power pin is connected to a first power line for supplying power to an external load, including a first end and a second end. The first end of the first power pin is located inside the receiving cavity, and the second end of the first power pin extends outside the receiving cavity.

[0007] The second power pin is connected to a second power line for supplying power to an external load. It includes a first end and a second end. The first end of the second power pin is located inside the receiving cavity, and the second end of the second power pin extends outside the receiving cavity. The second power pin is spaced apart from the first power pin.

[0008] Control circuit board; and

[0009] A temperature sensing element is disposed within the receiving cavity and electrically connected to the control circuit board for detecting the temperature of the first power pin.

[0010] By adopting the above technical solution, a temperature-sensing element for detecting the temperature of the first power pin is installed inside the temperature-controlled plug, and the temperature-sensing element is electrically connected to the control circuit board to provide support for subsequent power-off protection. For example, during the operation of the temperature-controlled plug, when the temperature-sensing element detects that the temperature of the first power pin has reached a preset temperature value, the temperature-sensing element feeds back a temperature sensing signal to the control circuit board. Upon receiving the temperature sensing signal, the control circuit of the control circuit is powered off, thereby preventing the temperature of the first and second power pins from continuing to rise and burning out the temperature-controlled plug and socket, effectively improving the safety of the temperature-controlled plug and avoiding danger.

[0011] According to a specific embodiment of the present invention, the temperature sensing element is closer to the first power pin than the control circuit board.

[0012] In some implementations, the temperature sensing element is located on the control circuit board, which results in poor temperature detection accuracy of the first power pin. By adopting the above technical solution, the temperature sensing element is made closer to the first power pin than the control circuit board, thereby reducing the distance between the temperature sensing element and the first power pin and effectively improving the temperature detection accuracy of the first power pin.

[0013] According to a specific embodiment of the present invention, the distance between the temperature sensing element and the first power plug is a first distance, the distance between the first power plug and the second power plug is a second distance, and the ratio of the first distance to the second distance is less than or equal to 0.3.

[0014] By adopting the above technical solution, by limiting the ratio of the distance between the temperature sensing element and the first power pin to the distance between the first power pin and the second power pin to less than or equal to 0.3, the temperature sensing element is located near the first power pin, which can ensure the accuracy of the temperature sensing element in detecting the temperature of the first power pin. Thus, when the temperature of the first power pin reaches the preset temperature value, the temperature sensing element can promptly feed back the temperature sensing signal to the control circuit board.

[0015] According to a specific embodiment of the present invention, the temperature sensing element is located between the first power pin and the second power pin.

[0016] According to a specific embodiment of the present invention, the first power pin is located between the temperature sensing element and the second power pin.

[0017] According to a specific embodiment of this utility model, the temperature control plug further includes:

[0018] A temperature-sensing circuit board is disposed within the receiving cavity and electrically connected to the control circuit board, and the temperature-sensing circuit board is located between the first power pin and the second power pin, and the temperature-sensing element is disposed on the temperature-sensing circuit board.

[0019] By adopting the above technical solution, a temperature sensing circuit board is set between the first power pin and the second power pin, and the temperature sensing element is set on the temperature sensing circuit board so that the temperature sensing element is located near the first power pin, so as to ensure the accuracy of the temperature sensing element in detecting the temperature of the first power pin. Thus, when the temperature of the first power pin reaches the preset temperature value, the temperature sensing element can promptly feed back the temperature sensing signal to the control circuit board.

[0020] According to a specific embodiment of the present invention, the temperature sensing element includes a first temperature sensing element and a second temperature sensing element;

[0021] The first temperature sensing element is located between the first power pin and the second temperature sensing element, and the second temperature sensing element is located between the first temperature sensing element and the second power pin.

[0022] By adopting the above technical solution, a first temperature sensing element is set to detect the temperature of the first power plug, and a second temperature sensing element is set to detect the temperature of the second power plug. Thus, when either the first power plug or the second power plug reaches a preset temperature value, a temperature sensing signal can be fed back to the control circuit board, so that the control circuit board can disconnect the circuit, avoid burning out the temperature control plug and socket, and improve safety.

[0023] According to a specific embodiment of the present invention, the temperature sensing element is disposed within the receiving cavity;

[0024] The temperature control plug also includes a heat-conducting terminal, and the temperature sensing element is fixed on the heat-conducting terminal;

[0025] The heat-conducting terminal includes a pin connection portion, which is fixed to the first power pin.

[0026] By employing the above technical solution, the temperature-sensing element is placed on the heat-conducting terminal, and the heat-conducting terminal is physically connected to the first power pin, allowing the temperature of the first power pin to be transferred to the temperature-sensing element through the heat-conducting terminal. Therefore, the temperature-sensing element can detect the temperature of the first power pin through the heat-conducting terminal, improving the detection accuracy of the first power pin.

[0027] According to a specific embodiment of this utility model, the material of the heat-conducting terminal is copper or aluminum.

[0028] According to a specific embodiment of the present invention, the temperature sensing element is fixed on the heat-conducting terminal by a thermally conductive insulating material.

[0029] According to a specific embodiment of the present invention, the temperature sensing element is disposed on the inner surface of the housing, and the ratio of the distance between the temperature sensing element and the first power pin to the distance between the second power pin and the first power pin is less than or equal to 0.3.

[0030] By adopting the above technical solution, placing the temperature sensing element near the first power plug can ensure the accuracy of the temperature detection of the first power plug. Thus, when the temperature of the first power plug reaches the preset temperature value, the temperature sensing element can promptly feed back the temperature signal to the control circuit board, avoiding damage to the power plug or power socket and ensuring electrical safety. Attached Figure Description

[0031] Figure 1This is a perspective view of the temperature control plug hidden in the housing of one embodiment.

[0032] Figure 2 for Figure 1 A magnified view of point A in the middle.

[0033] Figure 3 yes Figure 1 The temperature control plug is shown in a stereoscopic view from another angle, with part of the housing hidden.

[0034] Figures 4 to 7 The positional relationship between the temperature sensing element and the first power pin of the temperature control plug in one embodiment is shown.

[0035] Figures 8 to 11 These are perspective views of the temperature control plug hidden portion of the housing according to another embodiment of this utility model.

[0036] Figures 12 to 14 These are perspective views of the hidden portion of the housing of the temperature control plug according to another embodiment of this utility model.

[0037] Explanation of icon numbers:

[0038] 100. Temperature control plug; 110. Control circuit board; 120. First power cord; 130. Second power cord; 140. Wire; 150. Plug tail;

[0039] 200. Housing; 210. Receiving cavity; 220. Pin receiving part; 221. Through hole;

[0040] 300. First power pin; 310. First end of the first power pin; 320. Second end of the first power pin; 330. First power cord;

[0041] 400. Second power pin; 410. First end of the second power pin; 420. Second end of the second power pin; 430. Second power cord;

[0042] 500. Temperature sensing element; 510. First temperature sensing element; 520. Second temperature sensing element;

[0043] 600. Temperature sensing circuit board;

[0044] 700. Thermally conductive terminal; 710. Pin connection portion; 711. Connection hole; 720. First connection portion; 721. First groove; 730. Second connection portion; 731. Second groove;

[0045] 800. Grounding pin, 810. First end of grounding pin, 820. Second end of grounding pin. Detailed Implementation

[0046] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0047] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0049] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0050] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0052] refer to Figures 1 to 3In one embodiment, the temperature control plug 100 includes: a control circuit board 110, a housing 200, a first power plug 300, a second power plug 400, two temperature sensing elements 500 (one of the two temperature sensing elements 500 is a first temperature sensing element 510, and the other is a second temperature sensing element 520), a temperature sensing circuit board 600, and a grounding plug 800.

[0053] Figure 1 The temperature control plug 100 shown includes three pins. It should be noted that the number of pins for the temperature control plug 100 is not specifically limited in this embodiment. For example, in other possible implementations, the temperature control plug 100 may also be, for example... Figure 8 and Figure 9 The two-prong plug shown, namely the temperature control plug 100, includes only the first power pin 300 and the second power pin 400.

[0054] To facilitate a detailed description of the structure of the temperature control plug 100, the extension direction X, the spacing direction Y, and the lateral direction Z are defined below. The extension direction X is the direction in which the first power pin 300, the second power pin 400, and the grounding pin 800 extend; that is, the first power pin 300, the second power pin 400, and the grounding pin 800 all extend along the extension direction X. The spacing direction Y is the direction in which the first power pin 300 and the second power pin 400 are spaced apart along direction Y; that is, the first power pin 300 and the second power pin 400 are spaced apart along direction Y. The lateral direction Z is approximately perpendicular to both the extension direction X and the spacing direction Y. For example, the angle between the lateral direction Z and the extension direction X is approximately 80°, 85°, 90°, 95°, or other angles; the angle between the lateral direction Z and the spacing direction Y is approximately 80°, 85°, 90°, 95°, or other angles; and the angle between the extension direction X and the spacing direction Y is approximately 80°, 85°, 90°, 95°, or other angles.

[0055] In this embodiment, the first power pin 300, the second power pin 400, and the grounding pin 800 are spaced apart and arranged in a triangular pattern. Specifically, along the horizontal direction Z, the grounding pin 800 is located on the same side as the first power pin 300 and the second power pin 400.

[0056] Continue to refer to Figure 1 and Figure 3 The housing 200 has a receiving cavity 210, and the control circuit board 110, the temperature sensing element 500, and the temperature sensing circuit board 600 are disposed within the receiving cavity 210. It should be noted that, in order to illustrate the receiving cavity 210 and the components located within it, Figure 1 and Figure 3 Part of the casing 200 was hidden.

[0057] refer to Figure 1The housing 200 also includes a pin receiving portion 220, which faces the socket when the temperature control plug 100 is plugged into it. The pin receiving portion 220 has two through holes 221, one of which allows a first power pin 300 to pass through, and the other through hole 221 allows a second power pin 400 to pass through. Exemplarily, the first power pin 300 includes a first end 310 and a second end 320. The first end 310 of the first power pin 300 is located within the receiving cavity 210 and electrically connected to the control circuit board 110, while the second end 320 of the first power pin 300 extends through one through hole 221 of the pin receiving portion 220 to the outside of the receiving cavity 210 for connection to a socket (not shown). The second power pin 400 includes a first end 410 and a second end 420. The second power pin 400 has a first end 410 located inside the receiving cavity 210 and electrically connected to the control circuit board 110. The second end 420 of the second power pin 400 extends through another through hole 221 in the pin receiving portion 220 to the outside of the receiving cavity 210 for connection to a socket. The grounding pin 800 includes a first end 810 and a second end 820. The first end 810 of the grounding pin 800 is located inside the receiving cavity 210 and connected to the control circuit board 110. The second end 820 of the grounding pin 800 extends to the outside of the receiving cavity 210 for connection to a socket.

[0058] For example, the first power pin 300 is connected to a first power line 120 for supplying power to an external load (e.g., reference 1). Figure 8 The second power pin 400 connects to the second power line 130 for supplying power to an external load. Figure 8 (As shown), when the temperature control plug 100 is plugged into the socket, it can supply power to external loads (such as water pumps, heaters, and other electrical products) through the first power plug 300 and the second power plug 400. The grounding plug 800 is connected to the grounding wire to prevent leakage current from external loads from threatening the user's personal safety.

[0059] Exemplarily, the first temperature sensing element 510 and the second temperature sensing element 520 are disposed within the receiving cavity 210 and electrically connected to the control circuit board 110. Specifically, the temperature sensing circuit board 600 is disposed between the first power pin 300 and the second power pin 400, and the temperature sensing circuit board 600 is electrically connected to the control circuit board 110. The first temperature sensing element 510 and the second temperature sensing element 520 are disposed on the temperature sensing circuit board 600. The first temperature sensing element 510 and the second temperature sensing element 520 are connected to the control circuit board 110 through the temperature sensing circuit board 600. The first temperature sensing element 510 is used to detect the temperature of the first power pin 300, and the second temperature sensing element 520 is used to detect the temperature of the second power pin 400. The first temperature sensing element 510 and the second temperature sensing element 520 disposed on the temperature sensing circuit board 600 are both surface mount devices (e.g., surface mount thermistors), which are small in size and have low power consumption. Other electronic components are also distributed on the temperature sensing circuit board 600 to make full use of the space of the temperature sensing circuit board 600 and reduce the size of the control circuit board 110 to a certain extent. The temperature sensing circuit board 600 is smaller than the control circuit board 110. Therefore, within the limited space of the receiving cavity 210, the temperature sensing circuit board is easier to position closer to the first power pin 300 / second power pin 400 than the control circuit board 110. Correspondingly, the first temperature sensing element 510 / second temperature sensing element 520 can be arranged very close to the first power pin 300 / second power pin 400, allowing the control circuit board 110 to accurately sense whether the first power pin 300 / second power pin 400 has reached a preset temperature value. The control circuit board 110 is equipped with a circuit breaker (not shown). Once the first power pin 300 / second power pin 400 reaches the preset temperature value, the circuit breaker can disconnect the circuit within the temperature control plug 100, stopping the first power pin 300 and second power pin 400 from supplying power to the external load and preventing the temperature of the first power pin 300 / second power pin 400 from rising further.

[0060] Along the interval direction Y, the first temperature sensing element 510 and the second temperature sensing element 520 are respectively disposed at opposite ends of the temperature sensing circuit board 600. Specifically, along the interval direction Y, the first temperature sensing element 510 is located between the first power pin 300 and the second temperature sensing element 520, and the second temperature sensing element 520 is located between the first temperature sensing element 510 and the second power pin 400. The first temperature sensing element 510 is located near the first power pin 300 to improve the detection accuracy of the temperature of the first power pin 300 by the first temperature sensing element 510; the second temperature sensing element 520 is located near the second power pin 400 to improve the detection accuracy of the temperature of the second power pin 400 by the second temperature sensing element 520.

[0061] During operation, when the first temperature sensing element 510 detects that the temperature of the first power pin 300 reaches a preset temperature value (e.g., 80°C or above), or when the second temperature sensing element 520 detects that the temperature of the second power pin 400 reaches a preset temperature value (e.g., 80°C or above), the temperature sensing circuit board 600 sends a temperature sensing signal to the control circuit board 110. Upon receiving the temperature sensing signal, the control circuit board 110 cuts off the power to prevent the temperature of the first power pin 300 and the second power pin 400 from continuing to rise, which could burn out the temperature control plug 100 and the socket, thus avoiding danger.

[0062] In some other possible implementations, the temperature sensing circuit board 600 and the control circuit board 110 may be the same circuit board. That is, along the spacing direction Y, the control circuit board 110 is located between the first power pin 300 and the second power pin 400, and the first temperature sensing element 510 and the second temperature sensing element 520 are both located on the control circuit board 110.

[0063] It should be noted that the preset temperature value is not subject to any special restrictions in this application embodiment. It can be adaptively adjusted according to actual needs (such as national standards, load power, etc.), for example, the preset temperature value can be set to 85℃, 90℃ or 95℃.

[0064] The specific type of the temperature sensing element 500 is not limited in this embodiment. For example, the temperature sensing element 500 can be a thermistor, thermocouple, infrared temperature sensor or other temperature sensing element that can effectively detect the temperature of the first power pin 300 or the second power pin 400.

[0065] The embodiments of this application do not impose any special restrictions on the number of temperature sensing elements 500. For example, in some possible implementations, only one temperature sensing element 500 (e.g., the first temperature sensing element 500) may be provided. In other possible implementations, three, four, or five or more temperature sensing elements 500 may be provided to improve the detection accuracy of the temperature of the first power pin 300 or the second power pin 400.

[0066] For example, the first temperature sensing element 510 is closer to the first power pin 300 than the control circuit board 110, so that the distance between the first temperature sensing element 510 and the first power pin 300 is closer, which can effectively improve the detection accuracy of the temperature sensing element 500.

[0067] Specifically, refer to Figures 4 to 7The distance between the first temperature sensing element 510 and the first power plug 300 is a first distance L1, and the distance between the second temperature sensing element 520 and the second power plug 400 is also a first distance L1. Along the interval direction Y, the distance between the first power plug 300 and the second power plug 400 is a second distance L2. For example, the ratio of the first distance L1 to the second distance L2 is less than or equal to 0.3 (for example, the ratio of the first distance L1 to the second distance L2 could also be 0.28, 0.25, 0.20, 0.1, etc.). Therefore, the detection accuracy of the first temperature sensing element 510 for the temperature of the first power plug 300 and the detection accuracy of the second temperature sensing element 520 for the temperature of the second power plug 400 can be effectively ensured, so that when the temperature of the first power plug 300 reaches the preset temperature value, the first temperature sensing element 510 can promptly feed back the temperature sensing signal to the control circuit board 110, and when the temperature of the second power plug 400 reaches the preset temperature value, the second temperature sensing element 520 can promptly feed back the temperature sensing signal to the control circuit board 110.

[0068] It should be noted that the first distance L1 refers to the shortest distance from the first temperature sensing element 510 to any point on the first power socket 300, or the shortest distance from the second temperature sensing element 520 to any point on the second power socket 400.

[0069] It should be noted that the embodiments of this application do not impose special restrictions on the positional relationship between the first temperature sensing element 500 and the first power plug 300, and the positional relationship between the second temperature sensing element 500 and the second power plug 400, as long as the ratio of the first distance L1 to the second distance L2 is less than or equal to 0.3.

[0070] The positional relationship between the first temperature sensing element 510 and the first power pin 300 will be used as an example for explanation. Figure 4 Along the Y-axis, the first temperature sensing element 510 is located between the first power pin 300 and the second power pin 400. In another possible embodiment, refer to... Figure 5 Along the Y-axis, the first power pin 300 is located between the first temperature sensing element 510 and the second power pin 400. In other possible embodiments, refer to... Figure 6 Along the extending direction X, the first temperature sensing element 510 is located on the side of the first end 310 of the first power pin 300 away from the second end 320. (Reference) Figure 7 In some other possible implementations, along the transverse Z, the first temperature sensing element 510 is located on the same side of the first power pin 300 and the second power pin 400.

[0071] The positional relationship between the second temperature sensing element 520 and the second power pin 400 can be referred to the description of the positional relationship between the first temperature sensing element 510 and the first power pin 300.

[0072] In other embodiments, the temperature sensing element 500 may have other configurations.

[0073] For example, refer to Figure 8 and Figure 9 The two-pronged temperature control plug 100 shown includes only a first power pin 300 and a second power pin 400. Furthermore, only one temperature sensing element 500 is disposed within the receiving cavity 210, which is used to detect the temperature of the first power pin 300. In other possible embodiments, two, three, or four or more temperature sensing elements 500 may be disposed within the receiving cavity 210.

[0074] For example, continue to refer to Figure 8 and Figure 9 In this embodiment, the temperature sensing element 500 is fixed within the receiving cavity 210 via a heat-conducting terminal 700. In this embodiment, the heat-conducting terminal 700 is made of copper, but is not limited to this. In other possible implementations, the heat-conducting terminal 700 can also be made of materials with good thermal and electrical conductivity, such as aluminum.

[0075] refer to Figure 10 and combined Figure 8 and Figure 9 The heat-conducting terminal 700 includes a pin connection portion 710, a first connection portion 720, and a second connection portion 730. The pin connection portion 710 is located between the first connection portion 720 and the second connection portion 730. The pin connection portion 710 is electrically connected to the first end 310 of the first power pin 300. A temperature sensing element 500 is connected to the first connection portion 720 so that the temperature sensing element 500 detects the temperature of the first power pin 300 through the heat-conducting terminal 700. One end of the first power line 120 is electrically connected to the second connection portion 730 so that it is electrically connected to the first power pin 300 through the heat-conducting terminal 700, allowing the first power pin 300 to supply power to an external load through the first power line 120.

[0076] Specifically, refer to Figures 8 to 11 The pin connection portion 710 has a connection hole 711. The first end 310 of the first power pin 300 passes through the connection hole 711 and is fixed to the connection hole 711 by means such as soldering. The first connection portion 720 and the second connection portion 730 extend outward from both sides of the pin connection portion 710, forming a first groove 721 and a second groove 731, respectively. The temperature sensing element 500 is accommodated in the first groove 721 and is fixed in the first groove 721 by a thermally conductive insulating material (such as thermally conductive silicone, thermally conductive gel, thermally conductive epoxy resin, etc.). Exemplarily, the temperature sensing element 500 is electrically connected to the control circuit board 110 via a wire 140.

[0077] Therefore, during operation, when the temperature of the first power pin 300 rises, the heat from the first power pin 300 is transferred to the heat-conducting terminal 700 due to the physical connection between the heat-conducting terminal 700 and the first power pin 300. The temperature-sensing element 500 detects the temperature of the first power pin 300 by detecting the temperature of the heat-conducting terminal 700. When the temperature of the first power pin 300 reaches a preset temperature value, the temperature-sensing element 500 sends a temperature sensing signal to the control circuit board 110. Upon receiving the temperature sensing signal, the control circuit is disconnected to prevent the temperature of the first power pin 300 and the second power pin 400 from continuing to rise, which could burn out the temperature control plug 100 and the socket, thus avoiding a potential hazard.

[0078] Furthermore, a heat-conducting terminal 700 can also be provided on the second power plug 400. A temperature-sensing element 500 is provided on the first connection portion 720 of the heat-conducting terminal 700, so that the temperature-sensing element 500 detects the temperature of the second power plug 400 through the heat-conducting terminal 700, and one end of the second power line 130 is electrically connected to the second connection portion 730, so that it is electrically connected to the second power plug 400 through the heat-conducting terminal 700, so that the second power plug 400 supplies power to the external load through the second power line 130. The connection method between the second power plug 400 and the heat-conducting terminal 700, the temperature-sensing element 500, and the second power line 130 is the same as the connection method between the first power plug 300 and the heat-conducting terminal 700, the temperature-sensing element 500, and the first power line 120.

[0079] refer to Figures 12 to 14 In another embodiment, the temperature sensing element 500 is disposed on the inner surface of the pin receiving portion 220 of the housing 200 by means of, for example, bonding, snapping or welding, and the temperature sensing element 500 is electrically connected to the control circuit board 110 via the wire 140.

[0080] For example, the temperature sensing element 500 is closer to the first power pin 300 than the control circuit board 110, and the ratio of the first distance L1 (i.e., the distance between the temperature sensing element 500 and the first power pin 300) to the second distance L2 (i.e., the distance between the first power pin 300 and the second power pin 400) is less than or equal to 0.3 (for example, the ratio of the first distance L1 to the second distance L2 can also be 0.28, 0.25, 0.2, 0.1, etc.) to improve the detection accuracy of the temperature of the first power pin 300 by the temperature sensing element 500.

[0081] Therefore, during operation, when the temperature sensing element 500 detects that the temperature of the first power pin 300 has reached the preset temperature value, the temperature sensing element 500 sends a temperature sensing signal to the control circuit board 110. After receiving the temperature sensing signal, the control circuit of the control circuit board 110 is disconnected to prevent the temperature of the first power pin 300 and the second power pin 400 from continuing to rise, which could burn out the temperature control plug 100 and the socket, thus avoiding danger.

[0082] It should be noted that the specific location of the temperature sensing element 500 on the inner surface of the housing 200 is not specifically limited in this embodiment, as long as the ratio of L1 to L2 is less than or equal to 0.3.

[0083] Thus, this application satisfactorily discloses a scheme for detecting the temperature of the first power plug pin using a temperature sensing element. When the temperature of the first power plug pin reaches a preset temperature value, the temperature sensing element can feed back a temperature sensing signal to the control circuit board to control the circuit to disconnect, thereby preventing the temperature of the first power plug pin from continuing to rise and causing the plug or socket to burn out.

[0084] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A temperature controlled plug, characterized by, The temperature control plug comprises: a housing having a receiving cavity; a first power pin connected to a first power line for supplying power to an external load, the first power pin comprising a first end and a second end, the first end of the first power pin being located in the receiving cavity, the second end of the first power pin extending out of the receiving cavity; a second power pin connected to a second power line for supplying power to an external load, the second power pin comprising a first end and a second end, the first end of the second power pin being located in the receiving cavity, the second end of the second power pin extending out of the receiving cavity, the second power pin being spaced apart from the first power pin; a control circuit board; and a temperature sensing element located in the receiving cavity and electrically connected to the control circuit board, for detecting the temperature of the first power pin.

2. The temperature control plug of claim 1, wherein: the temperature sensing element is closer to the first power pin than the control circuit board. a distance between the temperature sensing element and the first power pin is a first distance, a distance between the first power pin and the second power pin is a second distance, and a ratio of the first distance to the second distance is less than or equal to 0.

3.

3. The temperature-controlled plug of claim 1, wherein, the temperature sensing element is located between the first power pin and the second power pin.

4. The temperature-controlled plug of claim 3, wherein, the first power pin is located between the temperature sensing element and the second power pin.

5. The temperature-controlled plug of claim 3, wherein, 6. The temperature control plug of any one of claims 1-3, wherein: the temperature control plug further comprises: a temperature sensing circuit board located in the receiving cavity and electrically connected to the control circuit board, and the temperature sensing circuit board is located between the first power pin and the second power pin, and the temperature sensing element is located on the temperature sensing circuit board. the temperature sensing element comprises a first temperature sensing element and a second temperature sensing element; 7. The temperature-controlled plug of claim 6, wherein, the first temperature sensing element is located between the first power pin and the second temperature sensing element, and the second temperature sensing element is located between the first temperature sensing element and the second power pin. the temperature sensing element is located in the receiving cavity; 8. The temperature-controlled plug of any one of claims 1-3, wherein, the temperature control plug further comprises a heat-conducting terminal, and the temperature sensing element is fixed on the heat-conducting terminal; wherein the heat-conducting terminal comprises a pin connecting portion, and the pin connecting portion is fixed on the first power pin. the heat-conducting terminal is made of copper or aluminum.

9. The temperature-controlled plug of claim 8, wherein, the temperature sensing element is fixed on the heat-conducting terminal by a heat-conducting insulating material.

10. The temperature-controlled plug of claim 8 or 9, wherein, the temperature sensing element is located on an inner surface of the housing, and a ratio of a distance between the temperature sensing element and the first power pin to a distance between the second power pin and the first power pin is less than or equal to 0.

3.

11. The temperature-controlled plug of any one of claims 1-3, wherein, ​

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