Power relay

Abstract

The utility model is suitable for the field of electronic devices, and provides a power relay, which comprises a shell, a base and a pin arranged on the shell, a positioning piece and a temperature sensor used for detecting the temperature of the pin, the positioning piece and the pin are both fixed on the base, and the temperature sensor is used for detecting the temperature of the pin. The temperature sensor is fixed on the base close to the pin through the positioning piece, and the temperature sensor is connected with the pin. The problem that the temperature of a relay cannot be detected is solved.

Description

Technical Field

[0001] This utility model belongs to the field of electronic devices, and in particular relates to a power relay. Background Technology

[0002] A power relay is a device that can generate a sudden change in one or more electrical output circuits when the input quantity (or excitation quantity) meets certain specified conditions.

[0003] Existing power relays only have input / output pins and coil pins, and some have auxiliary signal detection, but none of them have temperature detection functions. They cannot accurately monitor abnormal heating of the relay, nor can they monitor the health of the relay in real time. The problem is only discovered when the whole machine alarms after the relay fails. In some cases, it may even cause other components to burn out. Utility Model Content

[0004] This invention provides a power relay designed to solve the problem of not being able to detect the relay temperature.

[0005] This utility model is implemented as follows: a power relay includes a housing and a base and pins disposed on the housing, and also includes a positioning member and a temperature sensor for detecting the temperature of the pins. The positioning member and the pins are both fixed on the base, and the temperature sensor is fixed on the base near the pins through the positioning member. The temperature sensor is connected to the pins.

[0006] Furthermore, the positioning element includes a U-shaped cover with an opening groove, the opening groove of the U-shaped cover abutting against the pin, and the temperature sensor is fixed inside the opening groove.

[0007] Furthermore, the positioning element also includes an insulating layer, through which the temperature sensor is fixed within the opening groove.

[0008] Furthermore, the power relay also includes a coil that is plugged into the base and electrically connected to the pin.

[0009] Furthermore, the power relay also includes a protective cover with perforations, through which the coil is inserted into the base.

[0010] Furthermore, the power relay also includes a control unit for controlling the coil, and both the temperature sensor and the coil are electrically connected to the control unit.

[0011] Furthermore, the control unit is disposed within the housing, and the coil passes through the base and is electrically connected to the control unit.

[0012] Furthermore, the base also has a slot through which the pin is inserted into the base.

[0013] Furthermore, the lower end of the base is provided with a protrusion, and the lower end of the pin is provided with a groove corresponding to the protrusion. The pin is fixedly connected to the base through the protrusion.

[0014] Furthermore, the base also includes multiple feet, which are respectively fixed around the same end face of the base.

[0015] The beneficial effects achieved by this utility model are:

[0016] Because the power relay disclosed in this application has a temperature sensor that can detect the temperature of the pins at the pins on the base, the temperature of the pins and the power relay can be accurately and timely detected. The relay can be identified and replaced in the early stage of the relay malfunction, thus avoiding greater losses. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the power relay provided by this utility model;

[0018] Figure 2 This is a schematic diagram of the planar structure of the power relay provided by this utility model;

[0019] Figure 3 This is a schematic diagram of the planar structure of the base provided by this utility model;

[0020] Figure 4 A schematic diagram illustrating one embodiment of the power relay provided by this utility model.

[0021] In the diagram: 10, outer casing; 20, base; 21, pin; 211, groove; 22, coil; 221, protective cover; 23, foot; 24, slot; 25, perforation; 26, protrusion; 30, positioning element; 31, U-shaped cover; 311, opening slot; 32, insulating layer; 40, temperature sensor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Example 1

[0024] like Figure 1As shown, this application discloses a power relay, including a housing 10 and a base 20 and pins 21 disposed on the housing 10. It also includes a positioning member 30 and a temperature sensor 40 for detecting the temperature of the pins 21. The positioning member 30 and the pins 21 are both fixed on the base 20. The temperature sensor 40 is fixed on the base 20 near the pins 21 through the positioning member 30. The temperature sensor 40 is connected to the pins 21.

[0025] In the above embodiment, the power relay is equipped with a temperature sensor 40 on the pin of the base 20, which can detect the temperature of the pin 21. Therefore, the temperature of the pin 21 and the power relay can be detected accurately and in a timely manner. This allows for timely identification and replacement of the power relay in the early stage of an abnormality, thereby avoiding greater losses.

[0026] Pin 21 is used for electrical connection to external devices, such as inverters. Pin 21 is the heating element of the power relay, and its temperature represents the temperature of the power relay. A temperature sensor 40 is located at pin 21 to more accurately detect its temperature. The housing 10 protects the internal circuitry of the power relay, and the base 20 facilitates the mounting of pin 21 and the temperature sensor 40.

[0027] Example 2

[0028] like Figure 2 As shown, in a preferred embodiment, the positioning member 30 includes a U-shaped cover 32 with an opening slot 311. The opening slot 311 of the U-shaped cover 32 abuts against the pin 21, and the temperature sensor 40 is fixed within the opening slot 311. Preferably, the positioning member 30 further includes an insulating layer 31, through which the temperature sensor 40 is fixed within the opening slot 311.

[0029] In the above embodiment, the U-shaped cover 32 protects the temperature sensor 40, and the opening slot 311 facilitates the installation of the temperature sensor and allows the temperature sensor 40 to be close to the pin 21, thus enabling better detection of the temperature of the pin 21. The insulating layer 31 is an epoxy resin or silicone coating, which can be formed by spraying epoxy resin or silicone into the opening slot 311. The insulating layer 31 makes the temperature sensor 40 more secure and easier to install, and also prevents short circuits.

[0030] Example 3

[0031] In another preferred embodiment, such as Figures 2-3As shown, the power relay also includes a coil 22, a protective cover 221, and a control unit (not shown) for controlling the coil 22. The coil 22 is inserted into the base 20 and electrically connected to the pin 21. The protective cover 221 has a through-hole 25 through which the coil 22 is inserted into the base 20. Both the temperature sensor 40 and the coil 22 are electrically connected to the control unit. Furthermore, the control unit is disposed within the housing 10, and the coil 22 passes through the base 20 and is electrically connected to the control unit.

[0032] In the above embodiment, the coil 22 achieves mechanical movement through electromagnetic effect, thereby controlling the on / off state of the pin 21 (circuit). The protective cover 221 protects the coil 22 and prevents the magnetic field induced on the coil 22 from interfering with the circuit. The through hole 25 facilitates the installation of the coil 22. The control unit can be installed inside the housing 10 or externally and electrically connected to a monitoring computer, which facilitates real-time monitoring of the temperature on the power relay by the user.

[0033] Among them, such as Figure 4 As shown, when the coil is energized, pin 21 begins to heat up. Once pin 21 reaches a certain temperature, the temperature sensor 40 will send an alarm signal to the control unit. The control unit can then control the coil 22 to disconnect the current, preventing pin 21 from continuing to heat up. The control unit can also alert the user that pin 21 is overheating, allowing the user to replace the power relay or disconnect the power to the coil 22 and pin 21.

[0034] Example 4

[0035] like Figures 1-3 In another embodiment, the base 20 further includes a slot 24, through which the pin 21 is inserted into the base 20. Preferably, the lower end of the base 20 is provided with a protrusion 26, and the lower end of the pin 21 is provided with a groove 211 corresponding to the protrusion 26, and the pin 21 is fixedly connected to the base 20 through the protrusion 26. Preferably, the base 20 further includes a plurality of feet 23, which are respectively fixed around the same end face of the base 20.

[0036] In the above embodiment, the slot 24 facilitates the mounting of the pin 21, and the protrusion 26 is fixed to the lower end of the base 20. When the pin 21 is inserted into the base 20, the protrusion 26 engages with the groove 211, making the pin 21 more securely mounted. The mounting feet 23 facilitate the mounting of this power relay.

[0037] In summary, the power relay disclosed in this application can effectively detect temperature by installing the temperature sensor 40, which is located close to the pin 12. This allows for timely replacement or disconnection of the power relay, thereby preventing the power relay from being burned out by high temperature or affecting other devices.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power relay, comprising a housing and a base and pins disposed on the housing, characterized in that: It also includes a positioning element and a temperature sensor for detecting the temperature of the pin. The positioning element and the pin are both fixed on the base. The temperature sensor is fixed on the base near the pin by the positioning element and is connected to the pin.

2. The power relay according to claim 1, characterized in that: The positioning element is a U-shaped cover with an opening groove. The opening groove of the U-shaped cover abuts against the pin, and the temperature sensor is fixed inside the opening groove.

3. The power relay according to claim 2, characterized in that: The positioning element also includes an insulating layer, through which the temperature sensor is fixed within the opening groove.

4. The power relay according to claim 1, characterized in that: The power relay also includes a coil, which is inserted into the base and electrically connected to the pin.

5. The power relay according to claim 4, characterized in that: The power relay also includes a protective cover with perforations, through which the coil is inserted into the base.

6. The power relay according to claim 5, characterized in that: The power relay also includes a control unit for controlling the coil, and both the temperature sensor and the coil are electrically connected to the control unit.

7. The power relay according to claim 6, characterized in that: The control unit is housed within the housing, and the coil passes through the base and is electrically connected to the control unit.

8. The power relay according to claim 1, characterized in that: The base also has a slot through which the pin is inserted into the base.

9. The power relay according to claim 8, characterized in that: The lower end of the base is provided with a protrusion, and the lower end of the pin is provided with a groove corresponding to the protrusion. The pin is fixedly connected to the base through the protrusion.

10. The power relay according to claim 1, characterized in that: The base also includes multiple feet, which are fixed around the same end face of the base.

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