Connection terminals, power conversion devices and power supply equipment

Abstract

This application provides a connection terminal, a power conversion device, and a power supply device. It relates to the field of electrical technology. The connection terminal includes a first pin and multiple rows of second pins. The first pin is used to connect to a circuit board, and the second pins are used to connect to a power source or load. The multiple rows of second pins are stacked along the direction in which the first pin is inserted into the circuit board. This connection terminal occupies a small area, which is beneficial for miniaturization.

Description

Technical Field

[0001] This application relates to the field of electrical technology, and in particular to a connection terminal, a power conversion device, and a power supply equipment. Background Technology

[0002] In order to improve the power supply capacity of power equipment and meet the power distribution needs of higher power density, more and more connection terminals for power input or output need to be set in the power conversion device of the power equipment.

[0003] Currently, the large footprint of power conversion device connection terminals on circuit boards limits the number of input and output circuits available for power supply equipment, hindering the development of high-power-density circuit configurations. Therefore, reducing the footprint of connection terminals on circuit boards is a problem that needs to be addressed. Summary of the Invention

[0004] This application provides a connection terminal, a power conversion device, and a power supply device. The aim is to reduce the footprint of the connection terminal on the circuit board to meet the requirements of higher power density circuit configurations.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions: In a first aspect, this application provides a connection terminal that can be used, for example, in a power conversion device.

[0006] The connection terminal includes a first pin and multiple rows of second pins. The first pin is used to connect to a circuit board, and the second pins are used to connect to a power supply or load. The multiple rows of second pins are stacked along the direction in which the first pin is inserted into the circuit board.

[0007] By stacking multiple second pins along the insertion direction of the first pin to the circuit board, the space of the connector in the insertion direction of the first pin to the circuit board can be fully utilized to arrange more rows of second pins, thereby reducing the board area occupied by the connector. Furthermore, within the limited board mounting space, a single connector can connect more power circuits or more loads, thus meeting the requirements of higher power density circuit configurations.

[0008] In one embodiment, each row of second pins includes a first sub-pin and a second sub-pin spaced apart in a second direction, wherein the second direction is perpendicular to the direction in which the first pin is inserted into the circuit board.

[0009] Based on utilizing the vertical space of the circuit board, the horizontal space of the circuit board can be further utilized to upgrade the original one-dimensional stack to a two-dimensional matrix, thereby increasing the number of pins on a connection terminal to meet the circuit configuration requirements of higher power density.

[0010] In one implementation, the first sub-pin is used to connect to the positive terminal of the power supply or load, and the second sub-pin is used to connect to the negative terminal of the power supply or load.

[0011] Thus, the first and second sub-pins, spaced apart in the second direction, can form a complete current loop. This allows multiple power supply circuits or more loads to be connected to the same terminal, enabling higher power density circuit configurations.

[0012] In one implementation, the spacing between the first sub-pin and the second sub-pin is smaller than the spacing between two adjacent rows of second pins.

[0013] A smaller distance between the positive and negative pins of the same current loop can reduce the loop area, thereby decreasing the parasitic inductance of that current loop. Conversely, a larger distance between the two positive pins or the two negative pins of adjacent current loops can reduce mutual inductance between them, preventing interference between currents and improving loop stability.

[0014] In one embodiment, the connection terminal further includes a housing, with a first sub-pin and a second sub-pin extending through the housing, and the housing also includes a recess located between the first sub-pin and the second sub-pin.

[0015] By providing a groove between the first and second sub-pins, which are connected to power supplies or loads of different polarities, the creepage distance between the first and second sub-pins, which are spaced apart in the second direction, can be increased, thereby improving the insulation safety and reliability of the connection terminals.

[0016] In one embodiment, in two adjacent rows of second pins, the first and second sub-pins of one row of second pins are used to connect to the positive terminal of the power supply or load, and the first and second sub-pins of the other row of second pins are used to connect to the negative terminal of the power supply or load.

[0017] In two adjacent rows of second pins, two first sub-pins opposite each other in the insertion direction of the first pin onto the circuit board can form a complete current loop; two second sub-pins opposite each other in the insertion direction of the first pin onto the circuit board can form another complete current loop. In this way, multiple power supply circuits or more loads can be connected to the same connection terminal to meet the requirements of higher power density circuit configurations.

[0018] In one implementation, the spacing between two adjacent rows of second pins is less than the spacing between the first sub-pins and the second sub-pins.

[0019] A smaller distance between the positive and negative pins of the same current loop can reduce the loop area, thereby decreasing the parasitic inductance of that current loop. Conversely, a larger distance between the two positive pins or the two negative pins of adjacent current loops can reduce mutual inductance between them, preventing interference between currents and improving loop stability.

[0020] In one embodiment, the connection terminal further includes a housing, with first sub-pins and second sub-pins extending through the housing. The housing also includes a recess located between two adjacent first sub-pins, or between two adjacent second sub-pins.

[0021] By providing a groove between two first sub-pins of different polarities connected to a power supply or load, or between two second sub-pins of different polarities connected to a power supply or load, the creepage distance between two spaced-apart first sub-pins positioned opposite each other in the direction of insertion of the first pins to the circuit board can be increased. This improves the insulation safety and reliability of the connection terminals.

[0022] In one embodiment, the connection terminal further includes a housing, with a first sub-pin and a second sub-pin extending out of the housing, the first sub-pin and the second sub-pin extending out of the housing having different lengths.

[0023] The housing is used to fix and accommodate the first sub-pin and the second sub-pin. Since the first sub-pin and the second sub-pin protrude from the housing at different lengths, the insertion and extraction force of the connecting terminal can be reduced when the connecting terminal is plugged into other mating connecting terminals, so that the plugging and unplugging process of these two mating connecting terminals can be more labor-saving.

[0024] In one embodiment, the connection terminal includes multiple sets of first pins, each set of first pins including at least one third sub-pin, the at least one third sub-pin being connected to the same copper busbar. At least two pins of the multiple sets of second pins, used for connecting the positive terminal of a power supply or load, are connected to one set of first pins via a first copper busbar. At least two pins of the multiple sets of second pins, used for connecting the negative terminal of a power supply or load, are connected to another set of first pins via a second copper busbar.

[0025] Since at least two of the second pins in the multiple rows are connected to the positive terminals of the power supply or load through a set of first pins via a first copper busbar, at least two of the second pins in the multiple rows can achieve positive conduction of multiple circuits through only one first copper busbar. Similarly, since at least two of the second pins in the multiple rows are connected to the negative terminals of the power supply or load through a set of first pins via a second copper busbar, at least two of the second pins in the multiple rows can achieve negative conduction of multiple circuits through only one second copper busbar.

[0026] Thus, compared to a design where the positive or negative copper busbar for each circuit is connected to only one pin in a row of second pins, the connection terminal of this application allows at least two pins of the same polarity for connecting the power supply or load to share a single copper busbar. This reduces the total number of first copper busbars for connecting the positive terminal of each circuit and the total number of second copper busbars for connecting the negative terminal of each circuit, thereby reducing the space occupied by the copper busbars for connecting the circuit within the connection terminal. This reduces the overall size of the connection terminal, facilitating miniaturization and reducing its footprint on the circuit board. Furthermore, a greater number of connection terminals can be provided on a circuit board with limited installation space, increasing the number of circuits for outputting or distributing electrical energy in the power conversion device to meet higher power density distribution requirements, thereby improving the power supply capacity of the power supply equipment including the power conversion device.

[0027] In one embodiment, the connection terminal includes multiple sets of first pins, each set of first pins including at least one third sub-pin, the at least one third sub-pin being connected to the same copper busbar. One pin of the multiple sets of second pins, used for connecting a first terminal to a power supply or load, is connected to one set of first pins via a second copper busbar. At least two pins of the multiple sets of second pins, used for connecting a second terminal to a power supply or load, are connected to another set of first pins via a first copper busbar. The first terminal is a positive terminal and the second terminal is a negative terminal, or the first terminal is a negative terminal and the second terminal is a positive terminal.

[0028] Since one pin in the multi-row second pins used to connect to the first end of the power supply or load is connected to a group of first pins through a second copper busbar, and at least two pins in the multi-row second pins used to connect to the second end of the power supply or load are connected to another group of first pins through a first copper busbar, the same first copper busbar can realize the positive conduction of multiple circuits or the negative conduction of multiple circuits.

[0029] This reduces the number of first copper busbars used to conduct the positive or negative terminals in the connection terminal, thereby reducing the total number of first and second copper busbars and consequently reducing the space occupied by the first and all second copper busbars within the connection terminal. This reduces the overall size of the connection terminal, facilitating miniaturization and reducing its footprint on the circuit board. Furthermore, compared to methods where each of the first and second copper busbars is connected to at least two pins for the power supply or load, this method, which uses the second copper busbar to connect to one pin for the first terminal (power supply or load) and the first copper busbar to connect to at least two pins for the second terminal (power supply or load), allows one pin of each second copper busbar to form a current loop with one pin of at least two pins from the multiple rows of second pins connected to the first copper busbar. Each current loop is relatively independent, preventing the failure of one current loop from affecting the normal operation of another, thus improving the reliability of the multiple current loops used for power distribution.

[0030] In addition, since the connection terminals occupy a small area on the circuit board, a greater number of connection terminals can still be set on the circuit board with limited installation space, thereby increasing the number of circuits in the power conversion device for outputting or inputting electrical energy to meet the power distribution requirements of higher power density, and thus improving the power supply capacity of the power supply equipment including the power conversion device.

[0031] In one embodiment, the sum of the cross-sectional areas of all the third sub-pins in another set of first pins is greater than the sum of the cross-sectional areas of all the third sub-pins in another set of first pins, wherein the cross-section is perpendicular to the direction in which the first pins are inserted into the circuit board.

[0032] When another set of first pins is connected to at least two pins in a multi-row second pin, by setting the sum of the cross-sectional areas of all third sub-pins in that first pin to be greater than the sum of the cross-sectional areas of all third sub-pins in a first pin used to connect one of the pins in a multi-row second pin, it can be ensured that the other set of first pins has a higher current carrying capacity so that the same second copper busbar can meet the needs of multiple power distributions.

[0033] In one implementation, each group of first pins includes a plurality of third sub-pins, which are arranged at intervals.

[0034] Since the first pin includes multiple spaced third sub-pins, when the third sub-pins are connected to the circuit board, multi-point connection between the first pin and the circuit board can be achieved. This can avoid stress concentration on the first pin and reduce the possibility of the first pin separating from the circuit board due to the failure of a single point connection, thereby improving the reliability and stability of the connection between the connection terminal and the circuit board.

[0035] In one embodiment, the connection terminal includes multiple sets of first pins spaced apart in a second direction. Each set of first pins includes at least one third sub-pin, and the at least one third sub-pin is connected to the same copper busbar. Alternatively, a set of first pins and at least one first sub-pin are connected via a first copper busbar, or a set of first pins and at least one second sub-pin are connected via a second copper busbar.

[0036] In this way, multiple first copper busbars for connecting at least one first sub-pin and a set of first pins, or multiple second copper busbars for connecting at least one second sub-pin and a set of first pins, can extend along the insertion direction of the first pin and the circuit board, avoiding multiple bends of the first or second copper busbars in different directions that would occupy too much space. This helps to reduce the size of the connection terminals and facilitates the miniaturization of the connection terminals.

[0037] In one embodiment, the connection terminal includes multiple sets of first pins spaced apart in a third direction. Each set of first pins includes at least one third sub-pin, which is connected to the same copper busbar. The third direction is perpendicular to the second direction and to the direction in which the first pins are inserted into the circuit board. One set of first pins is connected to at least one pin in the multiple rows of second pins that is used to connect to the positive terminal of a power supply or load via a first copper busbar; alternatively, one set of first pins is connected to at least one pin in the multiple rows of second pins that is used to connect to the negative terminal of a power supply or load via a second copper busbar.

[0038] In this way, multiple pins for connecting at least one positive terminal of a power supply or load and a set of first pins, or multiple pins for connecting at least one negative terminal of a power supply or load and a set of first pins, can extend in the direction of the first pins' insertion into the circuit board, avoiding multiple bends of the first or second copper busbars in different directions that would occupy excessive space. This helps to reduce the size of the connection terminals and facilitates their miniaturization.

[0039] Secondly, this application provides a power conversion device for converting input electrical energy into power and then outputting it; the power conversion device includes a circuit board and a connection terminal as described in any of the above implementations, the connection terminal being disposed on the circuit board.

[0040] Because the connection terminal occupies a small area on the circuit board, a single connection terminal can connect more power circuits or more loads in a limited circuit board mounting space, thus enabling the power conversion device including the connection terminal to meet the circuit configuration requirements of higher power density.

[0041] Thirdly, this application provides a power supply device, which includes: a cabinet; a plurality of power conversion devices, all of which are located inside the cabinet; the plurality of power conversion devices include at least one power conversion device in any of the above implementations.

[0042] Because this power conversion device can meet the power distribution requirements of higher power density, the power supply equipment including this power conversion device has a stronger power supply capability. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of a power conversion device provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a power supply device provided in an embodiment of this application; Figure 3 This is a schematic diagram of another power supply device provided in an embodiment of this application; Figure 4 This is a partial exploded view of a power conversion device provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the second connection terminal in a power conversion device provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a connection terminal provided in an embodiment of this application; Figure 7 This is a front view schematic diagram of a connection terminal provided in an embodiment of this application; Figure 8 This is a schematic diagram of a portion of the structure of a connection terminal provided in an embodiment of this application; Figure 9 This is a partial structural diagram of another connection terminal provided in an embodiment of this application; Figure 10 This is a partial structural diagram of another connection terminal provided in an embodiment of this application; Figure 11 A front view schematic diagram of another connection terminal provided in an embodiment of this application; Figure 12 for Figure 7 A side view of a connection terminal provided in the corresponding embodiment of this application; Figure 13 for Figure 7 A top view of a connection terminal provided in the corresponding embodiment of this application; Figure 14 This is a schematic diagram of another connection terminal provided in an embodiment of this application; Figure 15 for Figure 14 An exploded view of the structure shown; Figure 16 for Figure 6 An exploded view of the structure shown; Figure 17 This is a partial structural diagram of another connection terminal provided in an embodiment of this application; Figure 18 This is a partial structural schematic diagram of another connection terminal provided in an embodiment of this application; Figure 19 This is a schematic diagram of the circuit board structure in a power conversion device provided in an embodiment of this application; Figure 20 This is a partial structural diagram of another connection terminal provided in an embodiment of this application.

[0044] Figure label: 100. Power conversion device; 200. Power supply equipment; 201. Cabinet; 202. Circuit breaker; 300. Power conversion device; 400. Power supply equipment; 401. Cabinet; 402. Power distribution device; 500. Power conversion device; 501. First connection terminal; 502. Second connection terminal; 5021. Socket; 1. Circuit board; 11. Second connector; 12. Insertion hole; 2. Connecting terminal; 21. First pin; 22. Second pin; 23. First copper busbar; 24. Second copper busbar; 25. Housing; 211. Third sub-pin; 212. Chamfer; 221. First sub-pin; 222. Second sub-pin; 241. First section; 242. Second section; 243. Third section; 251. Groove; 252. First surface; 253. Second surface; 254. First snap-fit; 255. First protrusion; 256. Second protrusion; Z, First direction; X, second direction; Y, Third-party orientation. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0046] In this application, the terms "first," "second," etc., are used only to distinguish different technical features or components, and do not indicate any priority or importance among these features, nor do they imply the number of technical features involved. Therefore, technical features described with "first," "second," etc., should be understood to include one or more.

[0047] In this application, unless otherwise expressly stated and limited, "multiple" means two or more.

[0048] Furthermore, in this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0049] The solutions involved in the embodiments of this application will be described below with reference to the accompanying drawings.

[0050] This application provides a power supply device, which can be a communication power supply device, a load power supply device, etc.

[0051] For example, the power supply device includes a power conversion unit that can convert input electrical energy into output power. For instance, the power conversion unit can convert direct current (DC) to alternating current (AC); or, for another example, it can convert AC to DC; or it can perform voltage boosting or bucking. The power supply device can be an outdoor naturally cooled power supply, etc. The power conversion unit can be an inverter, rectifier, on-board charger (OBC), power module within a charging device (e.g., DC-DC module, AC-DC module), etc. Figure 1 This is a schematic diagram of a power conversion device provided in an embodiment of this application. Figure 1 An exemplary structure of a power conversion device is shown, with reference to Figure 1 The power conversion device 100 is a photovoltaic inverter.

[0052] Figure 2 This is a schematic diagram of a power supply device provided in an embodiment of this application. Figure 2 An exemplary power supply device 200 is shown, including a power conversion device 100. For example... Figure 2 As shown, in some examples, the power supply device 200 can be a cabinet-type uninterruptible power supply (UPS), wherein the power supply device 200 includes a cabinet 201, multiple power conversion devices 100 and multiple circuit breakers 202, etc. The multiple power conversion devices 100 are stacked in the cabinet 201 along the height direction of the cabinet 201, and the multiple power conversion devices 100 are connected in parallel, and the multiple circuit breakers 202 are located above the multiple power conversion devices 100.

[0053] Figure 3 This is a schematic diagram of another power supply device provided in an embodiment of this application. Figure 3Another power supply device 400, including a power conversion device 300, is illustrated as an example. For example... Figure 3 As shown, in other examples, the power supply device 400 can be an integrated charging pile. The power supply device 400 includes a cabinet 401, a power distribution device 402, and multiple electrically connected power conversion devices 300, for example, the multiple power conversion devices 300 are connected in series. The power distribution device 402 and the multiple power conversion devices 300 are all installed inside the cabinet 401.

[0054] In other examples, the power supply unit can be a blade power supply. The power supply unit includes a cabinet and multiple power conversion units, all housed within the cabinet. The blade power supply can convert grid power into stable DC or standard voltage through the power conversion units, and then output this power to servers and other electrical equipment to achieve power distribution.

[0055] For ease of description, the Z direction in the accompanying drawings of this application is the first direction, the X direction is the second direction, and the Y direction is the third direction. For example, the first direction Z can be perpendicular to both the second direction X and the third direction Y, and the second direction X and the third direction Y can also be perpendicular to each other. This first direction Z is the insertion direction between the first connection terminal 501 and the circuit board 1 in the power conversion device 500 provided in the following embodiments of the application.

[0056] Figure 4 This is a partial structural exploded view of a power conversion device provided in an embodiment of this application.

[0057] like Figure 4 As shown, in some examples, the power conversion device 500 includes a circuit board 1, which is provided with power devices and a first connection terminal 501. This first connection terminal 501 may be referred to as a load terminal, for example. The circuit board 1 may be a printed circuit board (PCB), etc. The power devices can be mounted on the circuit board 1 by means of soldering, bolting, etc. The power devices may include, for example, filters, frequency converters, drivers, etc.

[0058] For example, circuit board 1 can be electrically connected to a power source. Circuit board 1 may include circuitry electrically connected to the positive terminal of the power source and circuitry electrically connected to the negative terminal of the power source. A first connection terminal 501, through its electrical connection to circuit board 1, can output power to an electrical device electrically connected to the first connection terminal 501.

[0059] Figure 5 This is a schematic diagram of the structure of the second connection terminal 502 in a power conversion device 500 provided in an embodiment of this application.

[0060] Combination Figure 4 and Figure 5As shown, in some examples, the power conversion device 500 further includes a second connection terminal 502, which is plugged into and connected to the first connection terminal 501. Thus, by utilizing the plugged-in connection of the first connection terminal 501 and the second connection terminal 502, electrical energy input or output can be achieved. The second connection terminal 502 can be electrically connected to the electrical device via a cable. This second connection terminal 502 can also be referred to as a wire terminal.

[0061] To improve the insertion and removal efficiency of the first connection terminal 501 and the second connection terminal 502, such as Figure 5 As shown, for example, the first connection terminal 501 includes a plurality of pins for connecting to a power source or load, and the second connection terminal 502 includes a plurality of sockets 5021 with openings facing the first connection terminal 501. Each socket 5021 of the second connection terminal 502 is positioned relative to each pin in the first connection terminal 501 for connecting to a power source or load in a third-party Y direction.

[0062] Thus, when performing a single plugging and unplugging operation between the second connection terminal 502 and the first connection terminal 501, multiple circuits can be turned on or off simultaneously, thereby improving the efficiency of circuit turning on or off in the power conversion device 500.

[0063] To enhance the power supply capacity of power equipment and meet the demands of higher power density power distribution, an increasing number of first connection terminals 501 for power input or output need to be installed in the power conversion device 500 of the power equipment. However, with the miniaturization of power equipment, the area of ​​the circuit board 1 is also decreasing. Some connection terminals 2 occupy a large area on the circuit board 1 due to their large size, which limits the number of circuits that the power equipment can input or output, thus failing to meet the demands of high power density power distribution.

[0064] To achieve miniaturization of the connection terminal 2, thereby allowing for more first connection terminals 501 to be placed on a smaller circuit board 1 to meet higher power density power distribution requirements and improve the power supply capacity of the power supply equipment, this application embodiment provides the following ways in which the first connection terminal 501 can be implemented. It should be noted that the first connection terminal 501 in the power conversion device 500 described above may include the following... Figures 4 to 20 Connection terminal 2 in any of the embodiments shown.

[0065] Figure 6 This is a schematic diagram of the structure of a connection terminal 2 provided in an embodiment of this application.

[0066] like Figure 6As shown, in some examples, the connection terminal 2 includes a first pin 21 and multiple rows of second pins 22. The first pin 21 is used to connect to the circuit board 1, and the second pins 22 are used to connect to a power source or load. The multiple rows of second pins 22 are stacked along the direction in which the first pin 21 is inserted into the circuit board 1. It should be noted that the direction in which the first pin 21 is inserted into the circuit board 1 is the first direction Z. The multiple rows of second pins 22 can be understood as two, three, or more rows of second pins 22. Figure 6 The diagram is illustrated using the connection terminal 2, which includes two rows of second pins 22.

[0067] By stacking multiple second pins 22 along the insertion direction of the first pin 21 to the circuit board 1, the space of the connection terminal 2 in the insertion direction of the first pin 21 to the circuit board 1 can be fully utilized to arrange more rows of second pins 22, thereby reducing the area occupied by the connection terminal 2 on the circuit board 1. Furthermore, in the limited installation space of the circuit board 1, the same connection terminal 2 can connect more power circuits or more loads, thereby meeting the circuit configuration requirements of higher power density.

[0068] For example, such as Figure 6 As shown, each row of second pins 22 includes a first sub-pin 221 and a second sub-pin 222 spaced apart in the second direction X, wherein the second direction X is perpendicular to the direction in which the first pin 21 is inserted into the circuit board 1.

[0069] Based on utilizing the vertical space of circuit board 1, the horizontal space of circuit board 1 can be further utilized to upgrade the original one-dimensional stack to a two-dimensional matrix, thereby increasing the number of pins set on a connection terminal 2 to meet the circuit configuration requirements of higher power density.

[0070] The following describes two different implementations of the first sub-pin 221 and the second sub-pin 222 provided in the embodiments of this application.

[0071] like Figure 6 As shown, in some examples, the first sub-pin 221 is used to connect the positive terminal of the power supply or load, and the second sub-pin 222 is used to connect the negative terminal of the power supply or load.

[0072] Thus, the first sub-pin 221 and the second sub-pin 222, spaced apart in the second direction X, can form a complete current loop. In this way, multiple power supply circuits or more loads can be connected to the same connection terminal 2 to meet the requirements of higher power density circuit configurations.

[0073] Figure 7 This is a front view schematic diagram of a connection terminal 2 provided in an embodiment of this application.

[0074] like Figure 7As shown in the example, the distance d3 between the first sub-pin 221 and the second sub-pin 222 is smaller than the distance d4 between two adjacent rows of second pins 22. This smaller distance between the positive and negative pins of the same current loop reduces the current loop area and thus lowers the parasitic inductance of that current loop. Simultaneously, a larger distance between the two positive pins or the two negative pins of adjacent current loops reduces the mutual inductance between adjacent current loops, preventing interference between currents in the two current loops and improving the stability of the current loop.

[0075] like Figure 6 As shown in the example, the connection terminal 2 also includes a housing 25, with the first sub-pin 221 and the second sub-pin 222 extending out of the housing 25. The housing 25 also includes a groove 251 located between the first sub-pin 221 and the second sub-pin 222.

[0076] By providing a groove 251 between the first sub-pin 221 and the second sub-pin 222, which are respectively connected to the power supply or the load with different polarities, the creepage distance of the first sub-pin 221 and the second sub-pin 222, which are spaced apart in the second direction X, can be increased, thereby improving the insulation safety and reliability of the connection terminal 2.

[0077] Figure 8 This is a partial structural diagram of a connection terminal 2 provided in an embodiment of this application. Figure 9 This is a partial structural diagram of another connection terminal 2 provided in an embodiment of this application.

[0078] Combination Figure 6 , Figure 8 and Figure 9 As shown in this example, the connection terminal 2 includes multiple sets of first pins 21, which are spaced apart in the second direction X. Each set of first pins 21 includes at least one third sub-pin 211, and the at least one third sub-pin 211 is connected to the same copper busbar. A set of first pins 21 and at least one first sub-pin 221 are connected through a first copper busbar 23, or a set of first pins 21 and at least one second sub-pin 222 are connected through a second copper busbar 24.

[0079] Thus, multiple first copper busbars 23 for connecting at least one first sub-pin 221 and a set of first pins 21, or multiple second copper busbars 24 for connecting at least one second sub-pin 222 and a set of first pins 21, can extend along the insertion direction of the first pin 21 and the circuit board 1, that is, along the first direction Z, avoiding the first copper busbar 23 or the second copper busbar 24 from being bent multiple times in different directions to occupy too much space. This helps to reduce the size of the connection terminal 2 and facilitates the miniaturization of the connection terminal 2.

[0080] Figure 8 The diagram illustrates a first copper busbar 23 connected to two first sub-pins 221, with a first pin 21 comprising three third sub-pins 211. The first copper busbar 23 can extend along the first direction Z. The connected first copper busbar 23, first sub-pins 221, and third sub-pins 211 form a single integrated structure.

[0081] Figure 9 The diagram illustrates an example where a first pin 21 includes two third sub-pins 211, and a second copper busbar 24 is connected to a second sub-pin 222. The second copper busbar 24 can extend along the first direction Z. The connected second copper busbar 24, second sub-pin 222, and third sub-pin 211 form a single integrated structure.

[0082] Figure 10 This is a partial structural diagram of another connection terminal 2 provided in an embodiment of this application.

[0083] When multiple sets of first pins 21 are spaced apart in the second direction X, second copper busbars 24 connected to the multiple sets of first pins 21 can be spaced apart in the second direction X. When the connecting terminal 2 includes two second copper busbars 24 spaced apart in the second direction X, the connecting terminal 2 can respectively include Figure 9 The structure of the second copper busbar 24 shown and Figure 10 The second copper busbar 24 structure is shown. In the second direction X, Figure 10 The first pin 21 connected to the second copper busbar 24 shown can be located at Figure 9 The second copper busbar 24 shown is connected to the first pin 21 and Figure 8 The first copper busbar 23 shown is connected between the first pin 21.

[0084] Figure 10 The diagram illustrates an example where a first pin 21 includes two sub-pins, and a second copper busbar 24 is connected to a second sub-pin 222. Figure 10 As shown in the example, the second copper busbar 24 includes a first section 241, a second section 242, and a third section 243. The second section 242 extends along a second direction X, and its two ends are connected to the first section 241 and the third section 243, respectively. The first section 241 extends along a first direction Z, and the third section 243 extends along the first direction Z. The end of the first section 241 facing away from the second section 242 is connected to a second sub-pin 222, and the end of the third section 243 facing away from the second section 242 is connected to a third sub-pin 211.

[0085] Thus, the first section 241, the second section 242, and the third section 243 can be bent, thereby avoiding the adjacent second copper busbar 24, ensuring that there is a gap between the two second copper busbars 24, avoiding short circuits caused by the two second copper busbars 24 being too close, and improving the stability and safety of the output or input power of the connection terminal 2.

[0086] It should be noted that the first copper busbar 23, the second copper busbar 24, the first pin 21 and the second pin 22 can be injection molded to form an integral structure with the housing 25 of the connecting terminal 2, which not only facilitates assembly but also ensures that the connecting terminal 2 has strong stability.

[0087] Figure 11 This is a front view schematic diagram of another connection terminal 2 provided in an embodiment of this application.

[0088] like Figure 11 As shown, in some other examples, in two adjacent rows of second pins 22, the first sub-pin 221 and the second sub-pin 222 of one row of second pins 22 are used to connect the positive terminal of the power supply or load, and the first sub-pin 221 and the second sub-pin 222 of the other row of second pins 22 are used to connect the negative terminal of the power supply or load.

[0089] In two adjacent rows of second pins 22, two first sub-pins 221 that are opposite each other in the insertion direction of the first pin 21 and the circuit board 1 can form a complete current loop; two second sub-pins 222 that are opposite each other in the insertion direction of the first pin 21 and the circuit board 1 can form another complete current loop. In this way, multiple power supply circuits or more loads can be connected to the same connection terminal 2 to meet the circuit configuration requirements of higher power density.

[0090] like Figure 11 As shown in the example, the spacing d5 between two adjacent rows of second pins 22 is smaller than the spacing d5 between the first sub-pin 221 and the second sub-pin 222. This smaller spacing between the positive and negative pins of the same current loop reduces the current loop area, thereby lowering the parasitic inductance of that current loop. Conversely, a larger spacing between the two positive pins or the two negative pins of adjacent current loops reduces mutual inductance between adjacent current loops, preventing interference between currents in the two current loops and improving the stability of the current loop.

[0091] like Figure 11 As shown in the example, the connection terminal 2 also includes a housing 25, with the first sub-pin 221 and the second sub-pin 222 extending out of the housing 25. The housing 25 also includes a groove 251, which is located between two adjacent first sub-pins 221 or between two adjacent second sub-pins 222.

[0092] By providing a groove 251 between two first sub-pins 221 of different polarities connected to the power supply or load, or between two second sub-pins 222 of different polarities connected to the power supply or load, the creepage distance of the two spaced-apart first sub-pins 221 that are opposite to each other in the insertion direction of the first pin 21 and the circuit board 1 can be increased, or the creepage distance of the two spaced-apart second sub-pins 222 that are opposite to each other in the insertion direction of the first pin 21 and the circuit board 1 can be increased. This improves the insulation safety and reliability of the connection terminal 2.

[0093] like Figure 11 As shown in this example, the connection terminal 2 includes multiple sets of first pins 21, which are spaced apart in the third direction Y. Each set of first pins 21 includes at least one third sub-pin 211, and the at least one third sub-pin 211 is connected to the same copper busbar. The third direction Y is perpendicular to the second direction X and perpendicular to the direction in which the first pins 21 are inserted into the circuit board 1. A set of first pins 21 is connected to at least one pin of the multiple rows of second pins 22 for connecting the positive terminal of the power supply or load via a first copper busbar 23, or a set of first pins 21 is connected to at least one pin of the multiple rows of second pins 22 for connecting the negative terminal of the power supply or load via a second copper busbar 24.

[0094] Thus, the first copper busbar 23, used to connect at least one positive terminal pin connected to the power supply or load and a set of first pins 21, or multiple second copper busbars 24, used to connect at least one negative terminal pin connected to the power supply or load and a set of first pins 21, can extend in the direction of insertion of the first pins 21 into the circuit board 1, avoiding multiple bends of the first copper busbar 23 or the second copper busbar 24 in different directions to occupy too much space. This helps to reduce the size of the connection terminal 2 and facilitates its miniaturization.

[0095] Figure 12 for Figure 7 A side view of a connection terminal 2 provided in the corresponding embodiment of this application. Figure 13 for Figure 7 The corresponding embodiment of this application provides a top view of a connection terminal 2.

[0096] To fix and protect the first sub-pin 221 and the second sub-pin 222, such as Figure 12 As shown, in some examples, the connection terminal 2 also includes a housing 25, with a first sub-pin 221 and a second sub-pin 222 extending out of the housing 25, and the lengths of the first sub-pin 221 and the second sub-pin 222 extending out of the housing 25 are different.

[0097] The housing 25 is used to fix and accommodate the first sub-pin 221 and the second sub-pin 222. Since the first sub-pin 221 and the second sub-pin 222 protrude from the housing 25 at different lengths, the insertion and extraction force of the connecting terminal 2 can be reduced when the connecting terminal 2 is inserted with other mating connecting terminals 2. Thus, the insertion process of these two mating connecting terminals 2 can be more labor-saving.

[0098] Combination Figure 12 and Figure 13 As shown in the example, housing 25 includes a first surface 252, a first sub-pin 221 extending from the first surface 252, and a second sub-pin 222 extending from the first surface 252. When the first sub-pin 221 is used to connect to the positive terminal of a power supply or load, and the second sub-pin 222 is used to connect to the negative terminal of a power supply or load, in the third direction Y, the distance between the end face of the first sub-pin 221 facing away from the first surface 252 and the first surface 252 is a first distance d1, and the distance between the end face of the second sub-pin 222 facing away from the first surface 252 and the first surface 252 is a second distance d2. The first distance d1 is not equal to the second distance d2. Figure 12 and Figure 13 This is illustrated using the example where the first distance d1 is greater than the second distance d2.

[0099] Thus, when the connecting terminal 2 is plugged into the mating side connecting terminal 2, that is, when the first connecting terminal 501 is plugged into the second connecting terminal 502, the first sub-pin 221 and the second sub-pin 222 forming a current loop have different lengths, thereby reducing the insertion and extraction force of the connecting terminal 2, making it easier to insert the two connecting terminals 2 during the plugging process.

[0100] Combination Figure 11 As shown, and by example, housing 25 includes a first surface 252, a first sub-pin 221 extending from the first surface 252, and a second sub-pin 222 extending from the first surface 252. In the case where, in two adjacent rows of second pins 22, the first sub-pin 221 and the second sub-pin 222 of one row of second pins 22 are used to connect to the positive terminal of a power supply or load, and the first sub-pin 221 and the second sub-pin 222 of the other row of second pins 22 are used to connect to the negative terminal of a power supply or load, in the third direction Y, the lengths of the first sub-pin 221 in one row of second pins 22 and the first sub-pin 221 in the other row of second pins 22 are different; the lengths of the second sub-pin 222 in one row of second pins 22 and the second sub-pin 222 in the other row of second pins 22 are also different.

[0101] Thus, when the connecting terminal 2 is plugged into the mating side connecting terminal 2, that is, when the first connecting terminal 501 is plugged into the second connecting terminal 502, the lengths of the two first sub-pins 221 forming one current loop are different, and the lengths of the two second sub-pins 222 forming another current loop are different, thereby reducing the insertion and extraction force of the connecting terminal 2, making it easier to insert the two connecting terminals 2 during the plugging process.

[0102] To further reduce the footprint of the connection terminal 2 and achieve miniaturization of the connection terminal 2, thereby meeting the power distribution requirements of higher power density, this application provides the following possible methods. Figure 14 This is a schematic diagram of another connection terminal 2 provided in an embodiment of this application. Figure 15 for Figure 14 An exploded view of the structure shown.

[0103] Combination Figure 14 and Figure 15 As shown, in some examples, the connection terminal 2 includes multiple sets of first pins 21, each set of first pins 21 including at least one third sub-pin 211, and the at least one third sub-pin 211 is connected to the same copper busbar. At least two pins of the multiple sets of second pins 22, used for connecting the positive terminal of the power supply or load, are connected to one set of first pins 21 via a first copper busbar 23. At least two pins of the multiple sets of second pins 22, used for connecting the negative terminal of the power supply or load, are connected to another set of first pins 21 via a second copper busbar 24. For example, the first copper busbar 23 is conductive, the second copper busbar 24 is conductive, and the first copper busbar 23 can be a sheet structure, and the second copper busbar 24 can also be a sheet structure. Figure 14 and Figure 15 The illustration is based on the example of the first copper busbar 23 connecting to the first sub-pin 221 of the two positive terminals used to connect to the power supply or load, and the second copper busbar 24 connecting to the second sub-pin 222 of the two negative terminals used to connect to the power supply or load.

[0104] Since at least two of the pins 22 in the multiple rows, used for connecting the positive terminals of the power supply or load, are connected to a group of first pins 21 via a first copper busbar 23, at least two pins in the multiple rows of second pins 22 can achieve positive conduction of multiple circuits through only one first copper busbar 23. Since at least two of the pins 22 in the multiple rows of second pins 22, used for connecting the negative terminals of the power supply or load, are connected to a group of first pins 21 via a second copper busbar 24, at least two pins in the multiple rows of second pins 22 can achieve negative conduction of multiple circuits through only one second copper busbar 24.

[0105] Thus, compared to a situation where the positive or negative copper busbar used to conduct each circuit is connected to only one pin of a row of second pins 22, the connection terminal 2 of this application allows at least two pins of the same polarity used to connect the power supply or load to share a single copper busbar. This reduces the total number of first copper busbars 23 used to conduct the positive terminal of each circuit and the total number of second copper busbars 24 used to conduct the negative terminal of each circuit in the connection terminal 2, thereby reducing the space occupied by the copper busbars used to conduct the circuit within the connection terminal 2. This reduces the overall volume of the connection terminal 2, facilitating miniaturization and reducing its footprint on the circuit board 1. Furthermore, even on a circuit board 1 with limited installation space, a greater number of connection terminals 2 can still be provided, thereby increasing the number of circuits in the power conversion device 500 used for outputting or distributing electrical energy to meet higher power density distribution requirements, and thus improving the power supply capacity of the power supply equipment including the power conversion device 500.

[0106] Figure 16 for Figure 6 An exploded view of the structure shown. (See diagram below.) Figure 16 As shown, in some other examples, the connection terminal 2 includes multiple sets of first pins 21, each set of first pins 21 including at least one third sub-pin 211, the at least one third sub-pin 211 being connected to the same copper busbar. One pin of the multiple sets of second pins 22, used for connecting to a power supply or load, is connected to one set of first pins 21 via a second copper busbar 24. At least two pins of the multiple sets of second pins 22, used for connecting to a power supply or load, are connected to another set of first pins 21 via a first copper busbar 23. The first terminal is a positive terminal and the second terminal is a negative terminal, or the first terminal is a negative terminal and the second terminal is a positive terminal. Figure 16 The illustration is based on the following example: the first end is the negative terminal and the second end is the positive terminal. The first copper busbar 23 is connected to two first sub-pins 221 for connecting the positive terminal of the power supply or load, and the first copper busbar 23 is connected to a set of first pins 12. The two second copper busbars 24 are respectively connected to a second sub-pin 222 for connecting the negative terminal of the power supply or load, and each second copper busbar 24 is connected to a set of first pins 21.

[0107] Since one pin in the multi-row second pin 22 used to connect to the first end of the power supply or load is connected to a group of first pins 21 through a second copper busbar 24, and at least two pins in the multi-row second pin 22 used to connect to the second end of the power supply or load are connected to another group of first pins 21 through a first copper busbar 23, the same first copper busbar 23 can realize the conduction of multiple circuits.

[0108] This reduces the number of first copper busbars 23 used to conduct the positive or negative terminals of the circuit in the connection terminal 2, thereby reducing the total number of first copper busbars 23 and second copper busbars 24, and consequently reducing the space occupied by the first copper busbars 23 and all second copper busbars 24 within the connection terminal 2. This reduces the overall volume of the connection terminal 2, facilitating its miniaturization and reducing its footprint on the circuit board 1. Furthermore, compared to the method where each of the first copper busbars 23 and second copper busbars 24 is connected to at least two pins for the power supply or load, this method, which uses the second copper busbar 24 to connect to one pin for the first terminal of the power supply or load and the first copper busbar 23 to connect to at least two pins for the second terminal of the power supply or load, allows one pin of the second pin 22 connected to each second copper busbar 24 to form a current loop with one pin of at least two pins of the multiple rows of second pins 22 connected to the first copper busbar 23. Each current loop is relatively independent, and the failure of one current loop will not affect the normal operation of another current loop, improving the reliability of the multiple current loops used for power distribution.

[0109] In addition, since the connection terminal 2 occupies a small area on the circuit board 1, a larger number of connection terminals 2 can still be set on the circuit board 1 with limited installation space, thereby increasing the number of circuits in the power conversion device 500 used for outputting or inputting electrical energy to meet the power distribution requirements of higher power density, and thus improving the power supply capacity of the power supply equipment including the power conversion device 500.

[0110] Figure 17 This is a partial structural diagram of another connection terminal 2 provided in an embodiment of this application.

[0111] like Figure 17 As shown, in this example, the sum of the cross-sectional areas of all the third sub-pins 211 in another set of first pins 21 is greater than the sum of the cross-sectional areas of all the third sub-pins 211 in another set of first pins 21, wherein the cross-section is perpendicular to the direction in which the first pin 21 is inserted into the circuit board 1.

[0112] Figure 17 The diagram illustrates an example where the first end is the negative terminal and the second end is the positive terminal. The first copper busbar 23 is connected to two first sub-pins 221 for connecting the positive terminal of the power supply or load, and the first copper busbar 23 is connected to a set of first pins 12. The two second copper busbars 24 are each connected to a second sub-pin 222 for connecting the negative terminal of the power supply or load, and each second copper busbar 24 is connected to a set of first pins 21.

[0113] by Figure 17For example, the sum of the cross-sectional areas of all the third sub-pins 211 in another set of first pins 21 can be understood as the sum of the cross-sectional areas of the third sub-pins 211 in the first pin 21 that are used to connect to the positive terminal of the first sub-pin 221 in the multi-row second pins 22 connected to the power supply or load through the first copper busbar 23; the sum of the cross-sectional areas of all the third sub-pins 211 in a set of first pins 21 can be understood as the sum of the cross-sectional areas of the third sub-pins 211 in the first pin 21 that are used to connect to the negative terminal of the second sub-pin 222 in the multi-row second pins 22 connected to the power supply or load through the second copper busbar 24.

[0114] When another set of first pins 21 is connected to at least two pins in multiple rows of second pins 22, by setting the sum of the cross-sectional areas of all third sub-pins 211 in the first pin 21 to be greater than the sum of the cross-sectional areas of all third sub-pins 211 in the first pin 21 used to connect one pin in multiple rows of second pins 22, it can be ensured that the other set of first pins 21 has a higher current carrying capacity so that the same first copper busbar 23 can meet the needs of multiple power distribution.

[0115] Figure 18 This is a partial structural schematic diagram of another connection terminal 2 provided in an embodiment of this application. Figure 19 This is a schematic diagram of the circuit board 1 in a power conversion device 500 provided in an embodiment of this application.

[0116] In some examples, such as Figure 17 As shown, the end of the third sub-pin 211 that is inserted into the circuit board 1 has a chamfer 212. This chamfer 212 acts as a guide when the third sub-pin 211 is inserted into the circuit board 1, facilitating the insertion process of the first pin 21 into the circuit board 1. For example, in conjunction with... Figure 18 and Figure 19 As shown, after the third sub-pin 211 is inserted into the insertion hole 12 on the circuit board 1 to accommodate the third sub-pin 211, the third sub-pin 211 and the circuit board 1 can be connected by soldering to ensure the stability of the connection between the connection terminal 2 and the circuit board 1.

[0117] It should be noted that when the third sub-pin 211 has a chamfer 212, the cross-sectional area of ​​the third sub-pin 211 mentioned above can be understood as the area of ​​the section of the third sub-pin 211 in the first direction Z that does not have the chamfer 212. For example, this section is... Figure 17 The section shown is located at position AA.

[0118] To improve the reliability of the connection between the connection terminal 2 and the circuit board 1, in some examples, each group of first pins 21 includes multiple third sub-pins 211, which are arranged at intervals.

[0119] like Figure 17 As shown, since the first pin 21 includes multiple spaced third sub-pins 211, when the third sub-pins 211 are soldered to the circuit board 1, a multi-point connection between the first pin 21 and the circuit board 1 can be achieved. This can avoid stress concentration on the first pin 21 and reduce the possibility of the first pin 21 separating from the circuit board 1 due to the failure of a single point connection, thereby improving the reliability and stability of the connection between the connection terminal 2 and the circuit board 1.

[0120] To improve the reliability and accuracy of the connection between the connection terminal 2 and the circuit board 1, this application provides the following possible methods.

[0121] Combination Figure 18 and Figure 19 As shown, in some examples, the connection terminal 2 further includes a housing 25, which includes a second surface 253 facing the circuit board 1. The first pin 21 extends through the second surface 253 and is plugged into the circuit board 1. The second surface 253 is provided with a first snap-fit ​​254 for snap-fitting with a second snap-fit ​​11 on the circuit board 1.

[0122] When mounting the connector 2 onto the circuit board 1, the connector 2 can be pre-positioned by the snap-fit ​​of the first snap-fit ​​component 254 and the second snap-fit ​​component 11, and then the first pin 21 and the third pin are connected to the circuit board 1 respectively. The first snap-fit ​​component 254 and the second snap-fit ​​component 11, which pre-position the connector 2 during assembly, not only facilitate the assembly of the connector 2 and the circuit board 1, thus improving assembly efficiency, but also improve the accuracy of the connector 2's position on the circuit board 1.

[0123] For example, one of the first latching member 254 and the second latching member 11 is a protrusion, and the other is a groove. The structure of the protrusion and groove 251 is relatively simple, which makes it easier to process the housing 25 and the circuit board 1 and improves processing efficiency. The shape of the protrusion can be columnar, conical, frustum-shaped, etc., and this application does not limit the shape of the protrusion. Figure 18 The first connector 254 is a protruding part. Figure 19 The illustration is based on the second connector 11 having a groove.

[0124] Figure 20 This is a partial structural diagram of another connection terminal 2 provided in an embodiment of this application. (In conjunction with...) Figure 15 , Figure 16 and Figure 20As shown, in some examples, the second surface 253 of the housing 25 is provided with a first protrusion 255, and a third sub-pin 211 of a set of first pins 21 protrudes from the first protrusion 255. The surface of the first protrusion 255 facing away from the second surface 253 abuts against the surface of the circuit board 1 facing the second surface 253.

[0125] The first protrusion 255 can maintain a gap between the second surface 253 and the circuit board 1. When the connecting terminal 2 is installed on the circuit board 1, there is no interference between the second surface 253 of the housing 25 and the circuit board 1, which helps to improve the reliability of the connection between the connecting terminal 2 and the circuit board 1.

[0126] For example, such as Figure 20 As shown, the second surface 253 of the housing 25 is provided with a plurality of first protrusions 255. When multiple sets of first pins 21 are spaced apart in the second direction X, the plurality of first protrusions 255 are spaced apart in the second direction X, and each set of first pins 21 protrudes through the first protrusions 255 opposite each other in the first direction Z; or, when multiple sets of first pins 21 are spaced apart in the third direction Y, the plurality of first protrusions 255 are spaced apart in the third direction Y, and each set of first pins 21 protrudes through the first protrusions 255 opposite each other in the first direction Z.

[0127] In this way, by using multiple first protrusions 255 arranged at intervals, the second surface 253 of the housing 25 can be balanced under force, so that the housing 25 can maintain a horizontal posture, further improving the reliability of the connection between the connection terminal 2 and the circuit board 1.

[0128] Example, combination Figure 20 As shown, the second surface 253 is equidistant from the surfaces of the plurality of first protrusions 255 that are opposite to the second surface 253. This further ensures that the housing 25 remains horizontal, improving the reliability of the connection between the connection terminal 2 and the circuit board 1. The distance between the surface of the first protrusion 255 that is opposite to the second surface 253 and the second surface 253 can be understood as the distance between the surface of the first protrusion 255 that is opposite to the second surface 253 and the second surface 253 in the first direction Z.

[0129] like Figure 20 As shown, in some examples, the second surface 253 of the housing 25 is provided with a second protrusion 256, the orthographic projection of the second protrusion 256 on the second surface 253 being spaced apart from the orthographic projection of the first protrusion 255 on the second surface 253. The surface of the second protrusion 256 facing away from the second surface 253 abuts against the surface of the circuit board 1 facing the second surface 253.

[0130] In this way, the position on the second surface 253 that does not protrude from the first pin 21 is also kept at a distance from the circuit board 1, so that there is no interference between the second surface 253 and the circuit board 1.

[0131] For example, the distance between the surface of the second protrusion 256 facing away from the second surface 253 and the second surface 253 is equal to the distance between the surface of the first protrusion 255 facing away from the second surface 253 and the second surface 253. The distance between the surface of the second protrusion 256 facing away from the second surface 253 and the second surface 253 can be understood as the distance between the surface of the second protrusion 256 facing away from the second surface 253 and the second surface 253 in the first direction Z. This ensures that the surfaces of each protrusion on the second surface 253 facing away from the second surface 253 maintain the same distance from the second surface 253, ensuring that the housing 25 can maintain a horizontal posture and is less prone to tilting, thus improving the reliability and stability of the assembly of the connection terminal 2 and the circuit board 1.

[0132] It should be noted that, Figures 4 to 18 ,as well as Figure 20 The connection terminal 2 shown can be used in any of the power conversion devices 500 provided in the embodiments of this application.

[0133] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0134] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A connecting terminal, characterized in that, The connection terminal includes a first pin and multiple rows of second pins. The first pin is used to connect to a circuit board, and the second pins are used to connect to a power supply or load. The multiple rows of second pins are stacked along the direction in which the first pin is inserted into the circuit board.

2. The connection terminal according to claim 1, characterized in that, Each row of the second pins includes a first sub-pin and a second sub-pin spaced apart in a second direction, wherein the second direction is perpendicular to the direction in which the first pin is inserted into the circuit board.

3. The connecting terminal according to claim 2, characterized in that, The first sub-pin is used to connect to the positive terminal of the power supply or the load, and the second sub-pin is used to connect to the negative terminal of the power supply or the load.

4. The connecting terminal according to claim 3, characterized in that, The spacing between the first sub-pin and the second sub-pin is less than the spacing between two adjacent rows of the second pin.

5. The connecting terminal according to claim 2 or 3, characterized in that, The connection terminal also includes a housing, through which the first sub-pin and the second sub-pin extend, and the housing also includes a groove located between the first sub-pin and the second sub-pin.

6. The connecting terminal according to claim 2, characterized in that, In two adjacent rows of the second pins, the first and second sub-pins of one row of the second pins are used to connect to the positive terminal of the power supply or the load, and the first and second sub-pins of the other row of the second pins are used to connect to the negative terminal of the power supply or the load.

7. The connecting terminal according to claim 5, characterized in that, The spacing between two adjacent rows of the second pins is less than the spacing between the first sub-pin and the second sub-pin.

8. The connecting terminal according to claim 6 or 7, characterized in that, The connection terminal also includes a housing, through which the first sub-pin and the second sub-pin extend. The housing also includes a groove located between two adjacent first sub-pins, or between two adjacent second sub-pins.

9. The connecting terminal according to any one of claims 2-8, characterized in that, The connection terminal also includes a housing, with the first sub-pin and the second sub-pin extending out of the housing, and the lengths of the first sub-pin and the second sub-pin extending out of the housing being different.

10. The connecting terminal according to any one of claims 1-9, characterized in that, The connection terminal includes multiple sets of first pins, each set of first pins includes at least one third sub-pin, and the at least one third sub-pin is connected to the same copper busbar; At least two pins in the multi-row second pins, which are used to connect to the positive terminal of the power supply or the load, are connected to a group of the first pins via a first copper busbar. At least two pins in the multi-row second pins, used to connect to the negative terminal of the power supply or the load, are connected to another set of the first pins via a second copper busbar.

11. The connecting terminal according to any one of claims 1-9, characterized in that, The connection terminal includes multiple sets of first pins, each set of first pins includes at least one third sub-pin, and the at least one third sub-pin is connected to the same copper busbar; One of the pins in the multiple rows of second pins, which is used to connect to the first end of the power supply or the load, is connected to a group of the first pins via a second copper busbar. At least two pins in the multi-row second pins, which are used to connect the second end of the power supply or the load, are connected to another set of the first pins via a first copper busbar. The first end is the positive terminal and the second end is the negative terminal, or the first end is the negative terminal and the second end is the positive terminal.

12. The connection terminal according to claim 11, characterized in that, The sum of the cross-sectional areas of all the third sub-pins in the other group of first pins is greater than the sum of the cross-sectional areas of all the third sub-pins in the first group of first pins, wherein the cross-section is perpendicular to the direction in which the first pin is inserted into the circuit board.

13. The connecting terminal according to any one of claims 10-12, characterized in that, Each group of first pins includes a plurality of third sub-pins, which are arranged at intervals.

14. The connecting terminal according to any one of claims 3-5, characterized in that, The connection terminal includes multiple sets of first pins, which are spaced apart in the second direction. Each set of first pins includes at least one third sub-pin, and the at least one third sub-pin is connected to the same copper busbar. A group of the first pins and at least one of the first sub-pins are connected via a first copper busbar, or a group of the first pins and at least one of the second sub-pins are connected via a second copper busbar.

15. The connecting terminal according to any one of claims 6-8, characterized in that, The connection terminal includes multiple sets of first pins, which are spaced apart in a third direction. Each set of first pins includes at least one third sub-pin, which is connected to the same copper busbar. The third direction is perpendicular to the second direction and perpendicular to the direction in which the first pin is inserted into the circuit board. A set of first pins is connected to at least one pin in the multiple rows of second pins for connecting the positive terminal of the power supply or the load via a first copper busbar; or, a set of first pins is connected to at least one pin in the multiple rows of second pins for connecting the negative terminal of the power supply or the load via a second copper busbar.

16. A power conversion device for converting input electrical energy into power and then outputting it; characterized in that, It includes a circuit board and a connection terminal as described in any one of claims 1-15, wherein the connection terminal is disposed on the circuit board.

17. A power supply device, characterized in that, include: Cabinet; Multiple power conversion devices, all of which are located inside the cabinet; The plurality of power conversion devices include at least one power conversion device as claimed in claim 16.

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