A wiring terminal, a circuit board, and an electronic device

Abstract

The application discloses a wiring terminal, a circuit board and an electronic device, relates to the technical field of electronics, and comprises a terminal body and a temperature detection piece, the terminal body is used for electrically connecting with a cable to realize wiring, the temperature detection piece is detachably connected with the terminal body, and the temperature detection piece can directly detect the temperature of the terminal body. The temperature detection piece and the terminal body are connected in a detachable mode, so that the temperature detection piece can be timely detached and replaced when the temperature detection piece fails. The wiring terminal disclosed by the application can arrange the temperature detection piece close to the terminal body by connecting the temperature detection piece with the terminal body directly, so that the temperature detection piece can quickly and sensitively measure the temperature of the terminal body, and therefore the accuracy of temperature detection of the wiring terminal can be improved, and reliable operation of the wiring terminal is ensured.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and more specifically, to a terminal block, circuit board, and electronic device. Background Technology

[0002] In electronic devices such as photovoltaic inverters, circuit boards are equipped with terminals. However, over time, these terminals may age, leading to poor contact and abnormal overheating. To ensure the stable operation of the entire electronic system, it is essential to detect abnormal temperatures at the terminals promptly. However, the accuracy of terminal temperature detection in related technologies is poor. Therefore, improving the accuracy of terminal temperature detection has become a pressing technical problem for those skilled in the art. Utility Model Content

[0003] The purpose of this application is to provide a terminal block for improving the accuracy of terminal block temperature detection.

[0004] Another object of this application is to provide a circuit board including the above-mentioned terminals.

[0005] Another object of this application is to provide an electronic device including the above-described circuit board.

[0006] A terminal block, comprising:

[0007] terminal body;

[0008] A temperature sensing element is detachably connected to the terminal body, and the temperature sensing element detects the temperature of the terminal body.

[0009] Optionally, in the above-mentioned terminal block, one of the terminal body and the temperature sensing element is provided with a sliding protrusion, and the other of the terminal body and the temperature sensing element is provided with a sliding groove, wherein the sliding protrusion slides in conjunction with the sliding groove.

[0010] Optionally, in the above-mentioned terminal block, one of the sliding protrusion and the slide groove is provided with a limiting protrusion at its end, and the other of the sliding protrusion and the slide groove abuts against the limiting protrusion and restricts the relative sliding of the sliding protrusion and the slide groove.

[0011] Optionally, in the above-mentioned terminal block, one of the terminal body and the temperature sensing element is provided with a snap-fit ​​protrusion, and the other of the terminal body and the temperature sensing element is provided with a snap-fit ​​groove, and the snap-fit ​​protrusion is embedded in the snap-fit ​​groove.

[0012] Optionally, in the above-mentioned terminal block, the terminal body is provided with a first connection hole, the temperature sensing element is provided with a second connection hole, and the connector passes through the first connection hole and the second connection hole and connects the terminal body and the temperature sensing element.

[0013] Optionally, in the above-described wiring terminals, the temperature sensing element includes:

[0014] The mounting housing is detachably connected to the terminal body, and the mounting housing is provided with a receiving space;

[0015] The detection body includes a detection element and a pin. The detection element is disposed within the receiving space. A first end of the pin is electrically connected to the detection element, and a second end of the pin is exposed outside the mounting housing.

[0016] Optionally, in the aforementioned terminal block, the receiving space is encapsulated with insulating material.

[0017] Optionally, in the above-mentioned terminal block, the first end and the second end of the pin have an included angle, the first end of the pin extends in the direction of the terminal body, the mounting housing has a pin through hole, the pin through hole communicates with the receiving space and the outside, and the second end of the pin passes through the pin through hole;

[0018] The mounting housing has a clearance groove, which is arranged along the extension direction of the pin through hole and communicates with the receiving space and the outside. The detection element is installed into the receiving space through the clearance groove.

[0019] A circuit board includes a substrate and the aforementioned terminals, wherein both the terminal body and the temperature sensing element are electrically connected to the substrate.

[0020] An electronic device comprising the circuit board described above.

[0021] The terminal block provided in this application includes a terminal body and a temperature sensing element. The terminal body is used for electrical connection with a cable to achieve wiring. The temperature sensing element is detachably connected to the terminal body and can directly detect the temperature of the terminal body. The detachable connection between the temperature sensing element and the terminal body facilitates timely removal and replacement in case of temperature sensing element failure.

[0022] Compared to related technologies, the terminal block provided in this application connects the temperature sensing element directly to the terminal body, allowing the temperature sensing element to be positioned close to the terminal body. This enables the temperature sensing element to quickly and sensitively measure the temperature of the terminal body, thereby improving the accuracy of temperature detection and ensuring reliable operation of the terminal block. In addition, the detachable connection between the temperature sensing element and the terminal body facilitates the disassembly and maintenance of the temperature sensing element.

[0023] The circuit board and electronic device disclosed in this application include the aforementioned terminals, and therefore also possess the aforementioned structure and beneficial effects. Other structures are described in reference to related technologies and will not be repeated here. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an isometric view of the first type of terminal block disclosed in the embodiments of this application;

[0026] Figure 2 This is a front view of the first type of terminal block disclosed in the embodiments of this application;

[0027] Figure 3 for Figure 2 Cross-sectional view at point AA;

[0028] Figure 4 This is an isometric view of the terminal body in the first type of wiring terminal disclosed in this application embodiment;

[0029] Figure 5 This is an isometric view of the terminal housing in the first type of wiring terminal disclosed in this application;

[0030] Figure 6 This is an unfolded view of the terminal housing in the first type of wiring terminal disclosed in this application;

[0031] Figure 7 This is an isometric view of the temperature sensing element in the first type of terminal block disclosed in this application embodiment;

[0032] Figure 8 This is an isometric view of the temperature sensing element in the first type of terminal block disclosed in this application before it is encapsulated with insulating material;

[0033] Figure 9 This is an isometric view of the detection body in the first type of terminal block disclosed in this application embodiment;

[0034] Figure 10 This is a front view of the second type of terminal block disclosed in the embodiments of this application;

[0035] Figure 11 This is a side view of the temperature sensing element in the second type of terminal block disclosed in this application embodiment;

[0036] Figure 12 This is a front view of the third type of terminal block disclosed in the embodiments of this application;

[0037] Figure 13 This is a schematic diagram of the circuit board structure disclosed in an embodiment of this application.

[0038] Wherein, 100 is the terminal body, 110 is the terminal housing, 111 is the slide groove, 112 is the wiring hole, 113 is the snap-fit ​​groove, 114 is the first connection hole, 120 is the conductive component, 130 is the fixing component, and 140 is the connector.

[0039] 200 is the temperature sensing element, 210 is the mounting housing, 211 is the sliding protrusion, 212 is the second connecting hole, 213 is the accommodating space, 214 is the clearance groove, 215 is the limiting protrusion, 216 is the snap-fit ​​protrusion, 220 is the sensing body, 221 is the sensing element, 222 is the pin, and 230 is the insulating material.

[0040] 300 is the substrate, and 301 is the insertion hole. Detailed Implementation

[0041] The core of this application is to disclose a terminal block for improving the accuracy of terminal block temperature detection.

[0042] Another key aspect of this application is the disclosure of a circuit board that includes the aforementioned terminals.

[0043] Another key aspect of this application is the disclosure of an electronic device including the aforementioned circuit board.

[0044] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the utility model as described in the claims. It should be noted that, for ease of description, only the parts relevant to the utility model are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0045] In related technologies, temperature sensing devices indirectly obtain the temperature of the terminals by measuring the temperature of copper foil on the circuit board at a certain distance from the terminals. However, due to the large distance between the two, a significant temperature difference exists between the terminals and the copper foil, making it impossible for the temperature sensing device to quickly and sensitively reflect the actual temperature and temperature changes of the terminals. Based on this, this application discloses the following terminal, circuit board, and electronic device.

[0046] Combination Figure 1 The terminal block disclosed in this application includes a terminal body 100 and a temperature detection element 200. The terminal body 100 is used for electrical connection with a cable to realize wiring. The temperature detection element 200 is detachably connected to the terminal body 100, and the temperature detection element 200 can directly detect the temperature of the terminal body 100. For example, the temperature detection element 200 may include at least one of NTC (Negative Temperature Coefficient) thermistors, thermocouples, PTC (Positive Temperature Coefficient) thermistors, resistance temperature detectors, bimetallic strip temperature sensors, semiconductor temperature sensors, etc., and this application does not limit this. The temperature detection element 200 is detachably connected to the terminal body 100, which facilitates timely disassembly and replacement in case of malfunction of the temperature detection element 200.

[0047] Compared to related technologies, the embodiments of this application connect the temperature sensing element 200 directly to the terminal body 100, allowing the temperature sensing element 200 to be positioned close to the terminal body 100. This enables the temperature sensing element 200 to quickly and sensitively measure the temperature of the terminal body 100, thereby improving the accuracy of terminal temperature detection and ensuring reliable operation of the terminal. In addition, the detachable connection between the temperature sensing element 200 and the terminal body 100 facilitates the disassembly and maintenance of the temperature sensing element 200.

[0048] Combination Figure 4 and Figure 10 The terminal body 100 includes a terminal housing 110, a conductive component 120, and a fixing component 130. Both the conductive component 120 and the fixing component 130 are disposed within the terminal housing 110, and the temperature sensing element 200 is connected to the terminal housing 110. A cable is used to fix its position via the fixing component 130 and to electrically connect to the conductive component 120. A wiring hole 112 for the cable to pass through is provided on the terminal housing 110. The wiring hole 112 and the temperature sensing element 200 are typically arranged on different outer walls of the terminal housing 110 to avoid mutual interference. The cable and the fixing component 130 can be fixed by screwing, snap-fitting, or other methods. Figure 5 and Figure 6The terminal housing 110 mentioned above can be manufactured by stamping steel plates.

[0049] In some embodiments disclosed in this application, combined with Figure 2 and Figure 3 A sliding protrusion 211 is provided on one of the terminal body 100 and the temperature sensing element 200, and a sliding groove 111 is provided on the other. The sliding protrusion 211 and the sliding groove 111 can slide together. Through the sliding engagement of the sliding protrusion 211 and the sliding groove 111, the temperature sensing element 200 can be slidably installed and removed relative to the terminal body 100. The structure is simple and easy to assemble. The cross-sectional shapes of the sliding protrusion 211 and the sliding groove 111 are adapted to each other and can be interlocked. The connection between the terminal body 100 and the temperature sensing element 200 is achieved by the friction between the sliding protrusion 211 and the sliding groove 111. The specific cross-sectional shapes of the sliding protrusion 211 and the sliding groove 111 are not limited in this embodiment. For example, Figure 3 , Figure 5 and Figure 7 The diagram illustrates a technical solution where a sliding protrusion 211 is disposed on a temperature sensing element 200, and the cross-section of the sliding protrusion 211 is T-shaped, while a groove 111 is disposed on the terminal body 100, and its cross-sectional shape is T-shaped to match the sliding protrusion 211. Combined with... Figure 5 and Figure 6 The slide groove 111 can be directly bent and formed on the terminal housing 110 by stamping steel plates, which is simple in structure and easy to produce.

[0050] To further optimize the design and achieve precise positioning, a limiting protrusion 215 is provided at the end of one of the sliding protrusion 211 and the slide groove 111. The other of the sliding protrusion 211 and the slide groove 111 can abut against the limiting protrusion 215 to limit the sliding position of the sliding protrusion 211 on the slide groove 111. This prevents the temperature sensing element 200 from slipping relative to the terminal body 100 and enables precise positioning and assembly of the temperature sensing element 200 and the terminal body 100. For example, Figure 7The diagram illustrates a technical solution where a limiting protrusion 215 is disposed on a temperature sensing element 200 and at the end of a sliding protrusion 211. This limiting protrusion 215 can abut against the end sidewall of a sliding groove 111 on the terminal body 100 to achieve limiting. The limiting protrusion 215 can be disposed only at one end of the sliding protrusion 211 or the sliding groove 111, thereby achieving unilateral limiting of relative sliding between the terminal body 100 and the temperature sensing element 200; or the limiting protrusion 215 can be disposed at both ends of the sliding protrusion 211 or the sliding groove 111, thereby achieving bilateral limiting of relative sliding between the terminal body 100 and the temperature sensing element 200. The limiting protrusion 215 and the terminal body 100 or the temperature sensing element 200 can be configured as an integral structure or a separate structure. For example, in combination with... Figure 7 When the limiting protrusion 215 is a single-sided limiting structure set on the temperature sensing element 200, the limiting protrusion 215 and the mounting shell 210 of the temperature sensing element 200 can be an integral structure and integrally manufactured, which is convenient for production.

[0051] In other embodiments disclosed in this application, a snap-fit ​​protrusion 216 is provided on one of the terminal body 100 and the temperature sensing element 200, and a snap-fit ​​groove 113 is provided on the other of the terminal body 100 and the temperature sensing element 200. The snap-fit ​​protrusion 216 can be directly embedded into the snap-fit ​​groove 113, thereby realizing the detachable assembly of the terminal body 100 and the temperature sensing element 200. The structure is simple and the assembly is convenient. This application does not limit the number or cross-sectional shape of the snap-fit ​​protrusion 216 and the snap-fit ​​groove 113. For example... Figure 10 and Figure 11 The diagram shows a technical solution in which a snap-fit ​​protrusion 216 is disposed on a temperature sensing element 200 and a snap-fit ​​groove 113 is disposed on a terminal body 100, and there are two snap-fit ​​protrusions 216 and two snap-fit ​​grooves 113, and the cross-sectional shape of both is rectangular.

[0052] In addition to sliding and snap-fit ​​connections, the terminal body 100 and the temperature sensing element 200 can also be connected by screws, pins, or other methods. A detachable connection can be achieved using corresponding bolts, pins, or other connecting parts 140. For example, combined with... Figure 12 The terminal body 100 is provided with a first connection hole 114, and the temperature detection element 200 is provided with a second connection hole 212. The connector 140 passes through the first connection hole 114 and the second connection hole 212 and connects the terminal body 100 and the temperature detection element 200. The connector 140 is made of insulating material to meet the multiple requirements of the circuit board for electrical performance, safety and reliability.

[0053] In some embodiments disclosed in this application, combined with Figure 8 and Figure 9The temperature sensing element 200 includes a mounting housing 210 and a sensing body 220. The mounting housing 210 is connected to the terminal body 100. The aforementioned sliding protrusions 211, grooves 111, snap-fit ​​protrusions 216, or snap-fit ​​grooves 113 are all disposed on the mounting housing 210. A receiving space 213 is provided on the mounting housing 210. The sensing body 220 includes a sensing element 221 and pins 222. The sensing element 221 is disposed within the receiving space 213, and is insulated and protected by the mounting housing 210. The sensing element 221 is the core functional device for sensing the temperature of the terminal body 100. There are typically two pins 222. The first end of each pin 222 is electrically connected to the sensing element 221, and the second end of each pin 222 is exposed outside the mounting housing 210 for connection to the circuit board substrate 300 to transmit the data measured by the sensing element 221 to the system. The sensing element 221 and the two pins 222 can be connected by soldering, resulting in a simple structure and convenient assembly.

[0054] In a further optimized design, an insulating material 230 is also encapsulated within the accommodating space 213 to provide insulating encapsulation for the detection element 221. This ensures the insulation withstand voltage performance of the detection element 221, meets safety regulations, and improves its resistance to lightning surges. For example, the insulating material 230 can be epoxy resin, glass, or similar materials.

[0055] In some embodiments, a cover plate structure is detachably provided on the mounting housing 210. The cover plate structure can insulate the accommodating space 213 from the outside world, ensuring the airtightness of the accommodating space 213, ensuring the reliable operation of the detection element 221, and at the same time facilitating the disassembly and maintenance of the detection element 221 relative to the mounting housing 210.

[0056] A pin through-hole is provided on the mounting housing 210, which communicates with the receiving space 213 and the outside. The second end of the pin 222 passes through the pin through-hole and is exposed outside the mounting housing 210 through the pin through-hole. Specifically, the pin through-hole extends along the insertion direction of the pin 222 on the substrate 300. Furthermore, in order to avoid the disassembly and maintenance of the temperature sensing element 200 affecting the installation of the terminal body 100 on the substrate 300, the aforementioned groove 111 is also arranged along the insertion direction of the pin 222 on the substrate 300, so that the temperature sensing element 200 can be disassembled and assembled separately when it malfunctions.

[0057] When the terminal body 100 and the temperature sensing element 200 are inserted side-by-side on the substrate 300, the spacing between the pins of the terminal body 100 and the temperature sensing element 200 needs to meet safety requirements. Therefore, in order to improve the accuracy of temperature detection by the temperature sensing element 200, the pins 222 usually need to be bent at a certain angle, such as 90°, during fabrication. That is, the first end and the second end of the pin 222 have an included angle, and the first end of the pin 222 extends in the direction of the terminal body 100, while the second end extends along the insertion direction of the pin 222 on the substrate 300. The mounting housing 210 extends inwards, allowing the detection element 221 to be arranged closer to the terminal body 100. Correspondingly, to facilitate the assembly of the detection body 220 onto the mounting housing 210, a clearance groove 214 is provided on the mounting housing 210. The clearance groove 214 communicates with the receiving space 213 and is arranged along the extending direction of the pin through-hole. The detection element 221 can be directly assembled into the receiving space 213 along the clearance groove 214, while the second end of the pin 222 can pass through the pin through-hole, completing the installation of the detection body 220 onto the mounting housing 210. The clearance groove 214 also reduces the weight of the mounting housing 210, lowering material costs.

[0058] Combination Figure 13 The circuit board disclosed in this application includes a substrate 300 and the aforementioned terminals. The terminals are disposed on the substrate 300, and both the terminal body 100 and the temperature sensing element 200 are electrically connected to the substrate 300, thereby connecting to the circuit system of the circuit board. Since it includes the aforementioned terminals, it also possesses the aforementioned structure and beneficial effects. Other structures refer to related technologies and will not be described in detail here.

[0059] For ease of assembly and disassembly, both the terminal body 100 and the temperature sensing element 200 are inserted into the substrate 300. Figure 13 The substrate 300 has a plug hole 301 for inserting the pins of the terminal body 100 and the temperature sensing element 200, so that the terminal can be detached from the substrate 300, which facilitates timely replacement and maintenance when the terminal body 100 and the temperature sensing element 200 fail.

[0060] The electronic device disclosed in this application includes the circuit board described above, and therefore also possesses the aforementioned structure and beneficial effects. Other structures are described in reference to related technologies and will not be repeated here. Specifically, the electronic device can be a photovoltaic inverter, combiner box, photovoltaic controller, energy storage system, etc.; correspondingly, the wiring terminals can be used as PV (Photovoltaic) terminals or other wiring terminals on the DC side of the aforementioned electronic device.

[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment unless explicitly excluded by another embodiment. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A terminal block, characterized in that, include: Terminal body(100); A temperature sensing element (200) is detachably connected to the terminal body (100), and the temperature sensing element (200) detects the temperature of the terminal body (100); One of the terminal body (100) and the temperature sensing element (200) is provided with a snap-fit ​​protrusion (216), and the other of the terminal body (100) and the temperature sensing element (200) is provided with a snap-fit ​​groove (113), and the snap-fit ​​protrusion (216) is embedded in the snap-fit ​​groove (113); or, the terminal body (100) is provided with a first connecting hole (114), the temperature sensing element (200) is provided with a second connecting hole (212), and the connector (140) passes through the first connecting hole (114) and the second connecting hole (212) and connects the terminal body (100) and the temperature sensing element (200).

2. The terminal block as described in claim 1, characterized in that, The temperature sensing element (200) includes: Mounting housing (210), which is detachably connected to the terminal body (100), and the mounting housing (210) is provided with a receiving space (213). The detection body (220) includes a detection element (221) and a pin (222). The detection element (221) is disposed in the receiving space (213). The first end of the pin (222) is electrically connected to the detection element (221), and the second end of the pin (222) is exposed outside the mounting housing (210).

3. The terminal block as described in claim 2, characterized in that, The containment space (213) is filled with insulating material (230).

4. The terminal block as described in claim 2, characterized in that, The first end and the second end of the pin (222) have an included angle. The first end of the pin (222) extends in the direction of the terminal body (100). The mounting housing (210) has a pin through hole. The pin through hole communicates with the accommodating space (213) and the outside. The second end of the pin (222) passes through the pin through hole. The mounting housing (210) has a clearance groove (214) which is arranged along the extension direction of the pin through hole and communicates with the accommodating space (213) and the outside. The detection element (221) is installed into the accommodating space (213) by the clearance groove (214).

5. A circuit board, characterized in that, It includes a substrate (300) and a terminal block as described in any one of claims 1-4, wherein the terminal block body (100) and the temperature sensing element (200) are both electrically connected to the substrate (300).

6. An electronic device, characterized in that, Includes the circuit board as described in claim 5.

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