Conductive floating connection terminal

Abstract

This invention discloses a conductive floating connection terminal, comprising a carrier; a floating member slidably disposed within the carrier; a conductive member directly or indirectly conductively connected to an external conductor; and a gasket abutting against both the carrier and the conductive member, wherein the conductive member can conduct electricity with the carrier through the gasket; wherein the Vickers hardness of the gasket is greater than that of the conductive member, and the Vickers hardness of the conductive member is greater than that of the carrier. By adding a gasket between the carrier and the conductive member, and ensuring that the gasket's Vickers hardness is greater than that of both the conductive member and the carrier, even with increased positive force between the conductive member and the gasket, no depression or bulge will appear in the contact area. Therefore, without affecting other functions, the contact resistance can be reduced by increasing the positive force, thereby achieving the effect of reducing temperature rise.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically, to a conductive floating connection terminal. Background Technology

[0002] Floating terminals are connection components capable of providing displacement compensation during electrical connections. They are typically used to absorb relative displacement caused by assembly errors, thermal expansion, vibration, or impact, thereby ensuring the stability and reliability of the electrical connection. Floating terminals have a wide range of applications, playing a crucial role, especially in scenarios with high power, high current, and high reliability requirements. In recent years, as devices such as AI servers and energy storage cabinets have evolved towards higher power density, higher current, and long-term continuous operation, the demand for floating terminals has been continuously increasing.

[0003] In AI servers, computing units such as GPUs and CPUs consume high power and draw large currents, requiring connection terminals to continuously transmit high currents while maintaining low contact resistance. In energy storage cabinets, the connections between battery modules and battery clusters operate under high current and thermal cycling conditions for extended periods, demanding extremely high reliability and safety. In these scenarios, if floating connection terminals age, fail to maintain contact, melt, or even catch fire due to excessive temperature rise, it could lead to serious consequences such as server downtime, data loss, and thermal runaway of the energy storage system. Repair and replacement costs are extremely high, and it could even cause safety accidents. Therefore, these scenarios place higher demands on the temperature rise of floating connection terminals; the lower the temperature rise, the safer and more reliable the connection. However, existing structural improvements have limited effectiveness and are insufficient to meet these requirements. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a conductive floating connection terminal.

[0005] The present invention discloses a conductive floating connection terminal, comprising: Load-bearing components; The floating component is slidably disposed within the load-bearing component; Conductive elements, which are directly or indirectly electrically connected to an external conductor; and Gaskets, which abut against the carrier and the conductive component respectively, allow the conductive component to conduct electricity with the carrier through the gaskets; Among them, the Vickers hardness of the gasket is greater than that of the conductive component, and the Vickers hardness of the conductive component is greater than that of the load-bearing component.

[0006] According to one embodiment of the present invention, the carrier has a floating hole and a first receiving groove, the first receiving groove being formed around the floating hole and communicating with the first receiving groove, the floating member being movably disposed in the floating hole and the first receiving groove; a gasket is disposed in the first receiving groove and abuts against the first wall surface of the first receiving groove.

[0007] According to one embodiment of the present invention, the floating member has a second receiving groove; The conductive element includes a first conductive body and a plurality of second conductive bodies. The first conductive body is disposed in a second receiving groove, and the plurality of second conductive bodies are disposed at the ends of the first conductive body. The plurality of second conductive bodies extend into the first receiving groove. One side of each second conductive body abuts against the side of the gasket away from the first wall surface. The first conductor has a third receiving groove, and the external conductor is inserted into the third receiving groove so that current can be conducted between the external conductor, the first conductor, the second conductor, the gasket and the carrier. Among them, the Vickers hardness of the gasket is greater than that of the second conductor, and the Vickers hardness of the second conductor is greater than that of the bearing.

[0008] According to one embodiment of the present invention, the second conductor has an arcuate surface that abuts against the side of the gasket away from the first wall surface; And / or the second conductor also has a bend, which is disposed at the end of the second conductor near the first conductor, and one side of the bend abuts against the end of the floating member.

[0009] According to one embodiment of the present invention, it further includes an elastic element, which protrudes from the second wall surface of the floating element, and the side of the second conductor away from the first wall surface abuts against the elastic element.

[0010] According to one embodiment of the present invention, the floating member further has a fourth receiving groove formed on the second wall surface, and the elastic member is disposed in the fourth receiving groove.

[0011] According to one embodiment of the present invention, the first receiving groove has a third wall surface directly opposite the first wall surface, and the third wall surface is provided with a plurality of barrier bodies protruding from it. The floating member also has a fourth wall surface, which is in contact with the plurality of barrier bodies.

[0012] According to one embodiment of the present invention, it further includes a fastener that abuts against the first conductor and a plurality of second conductors, thereby fixing the conductor to the floating member.

[0013] According to one embodiment of the present invention, the floating member further includes a support member, the floating member having a fifth receiving groove, the fifth receiving groove being formed on the inner wall surface of the second receiving groove, the support member being disposed in the fifth receiving groove, the support member being in contact with the first conductor; an external conductor is inserted into a third receiving groove, such that the outer wall surface of the first conductor abuts against the inner wall surface of the second receiving groove and the support member.

[0014] According to one embodiment of the present invention, the Vickers hardness of the gasket is 190-240 HV, the Vickers hardness of the conductive element is 160-200 HV, and the Vickers hardness of the bearing element is 80-110 HV.

[0015] The beneficial effects of the present invention are as follows: by adding a gasket between the carrier and the conductor, and the gasket having a Vickers hardness greater than that of the conductor and the carrier, even if the positive force between the conductor and the gasket is increased, the contact area between the two will not be concave or convex. Therefore, without affecting other functions, the contact resistance can be reduced by increasing the positive force, thereby achieving the effect of reducing temperature rise. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A three-dimensional structural diagram of a conductive floating connection terminal; Figure 2 A schematic diagram showing the disassembled structure of the conductive floating connection terminal; Figure 3 A cross-sectional view of a conductive floating connection terminal; Figure 4 This is a physical test diagram of the first wall surface; Figure 5 This is a physical test image of gasket 7; Figure 6 This is another physical test diagram of the first wall surface; Figure 7 Diagram of a test scenario for conductive floating connection terminals; Figure 8 This is one of the temperature test graphs under the usage conditions of Scheme 1; Figure 9 for Figure 8 A magnified view of a portion of the image; Figure 10 This is one of the temperature test graphs under the usage conditions of Scheme 2; Figure 11 for Figure 10 A magnified view of a portion of the image; Figure 12 This is the second temperature test diagram under the usage conditions of Scheme 1; Figure 13 for Figure 12 A magnified view of a portion of the image; Figure 14 This is the second temperature test diagram under the usage conditions of Scheme 2; Figure 15 for Figure 14 A magnified view of a portion of the image; Figure 16 This is the third temperature test diagram under the usage conditions of Scheme 1; Figure 17 for Figure 16 A magnified view of a portion of the image; Figure 18 This is the third temperature test diagram under the usage conditions of Scheme 2; Figure 19 for Figure 18 A magnified view of a portion of the image.

[0017] Explanation of reference numerals in the attached figures 1. Supporting element; 11. Floating hole; 12. First receiving groove; 121. First wall surface; 122. Third wall surface; 13. Barrier body; 14. First housing; 141. Toothed pattern; 15. Second housing; 2. Floating component; 21. Second receiving groove; 22. Second wall surface; 23. First floating body; 24. Second floating body; 25. Fourth receiving groove; 26. Fourth wall surface; 27. Fifth receiving groove; 3. Conducting element; 31. First conductor; 311. Third receiving groove; 32. Second conductor; 321. Curved surface; 322. Bending part; 4. Fasteners; 5. Elastic element; 51. Inclined surface; 6. Support components; 7. Gaskets. Detailed Implementation

[0018] The following drawings disclose several embodiments of the present invention. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0019] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed by this invention.

[0020] The conductive floating connection terminal includes a carrier 1, a floating member 2, a conductive member 3, and a gasket 7. Specifically, the carrier 1 is used to electrically connect other components, such as a circuit board. The floating member 2 is slidably connected to the carrier 1, and the floating function of the conductive floating connection terminal is realized by the movement of the floating member 2 relative to the carrier 1. The gasket 7 is disposed between the carrier 1 and the conductive member 3, and the gasket 7 abuts against both the carrier 1 and the conductive member 3, allowing current conduction between the carrier 1, the gasket 7, and the conductive member 3. The conductive member 3 is directly or indirectly electrically connected to an external conductor, thus enabling a conductive connection between the external conductor and the conductive floating connection terminal.

[0021] To further explain, the conductive element 3 can be electrically connected to an external conductor via a floating element 2 made of conductive material; this is considered an indirect electrical connection between the conductive element 3 and the external conductor. Alternatively, the conductive element 3 can also be in direct contact with the external conductor; this is considered a direct electrical connection. The following will elaborate on the structure where the conductive element 3 is directly electrically connected to the external conductor.

[0022] like Figures 1-3 As shown, Figure 1 A three-dimensional structural diagram of a conductive floating connection terminal; Figure 2 A schematic diagram showing the disassembled structure of the conductive floating connection terminal; Figure 3 This is a cross-sectional schematic diagram of a conductive floating connection terminal. In specific applications, the carrier 1, floating component 2, conductive component 3, and gasket 7 are all made of conductive material. There are two current conduction paths: one is that current can be conducted directly between the conductive component 3, gasket 7, and carrier 1; the other is that current can be conducted between the conductive component 3, floating component 2, and carrier 1.

[0023] Specifically, although the carrier 1, conductor 3, and gasket 7 are all made of conductive materials, the materials used vary depending on the actual application. Therefore, the Vickers hardness of the carrier 1, conductor 3, and gasket 7 are not the same. In this embodiment, the Vickers hardness of the gasket 7 is greater than that of the second conductor 32, and the Vickers hardness of the second conductor 32 is greater than that of the carrier 1. Specifically, the Vickers hardness of the gasket 7 is 190–240 HV, the Vickers hardness of the second conductor 32 is 160–200 HV, and the Vickers hardness of the carrier 1 is 80–110 HV. Preferably, the axial thickness of the gasket 7 is 0.1 mm to 0.5 mm.

[0024] Preferably, in order to improve the contact effect between the gasket 7 and the conductive member 3, the side of the gasket 7 that contacts the conductive member 3 has a planar structure.

[0025] The carrier 1 includes a first housing 14 and a second housing 15, which are connected. The first housing 14 has a floating hole 11, and after the first housing 14 and the second housing 15 are connected, a first receiving groove 12 is formed inside. The first receiving groove 12 communicates with the floating hole 11 and is formed around the floating hole 11. The floating member 2 is movably disposed in the floating hole 11 and the first receiving groove 12. The first receiving groove 12 has a first wall surface 121, and a gasket 7 is disposed on the first wall surface 121 of the first receiving groove 12. The conductive member 3 abuts against the side of the gasket 7 away from the first wall surface 121. Specifically, the first housing 14 and the second housing 15 can be connected by riveting. In this embodiment, in order to facilitate riveting the first housing 14 and the second housing 15, the outer surface of the first housing 14 is also provided with teeth 141.

[0026] The floating component 2 includes a first floating body 23 and a second floating body 24. The second floating body 24 is disposed around the outer surface of the first floating body 23 and protrudes from the outer surface of the first floating body 23. The first floating body 23 is movably disposed in the floating hole 11, and the second floating body 24 is movably disposed in the first receiving groove 12.

[0027] The first floating body 23 is provided with a second receiving groove 21, and the conductive member 3 is disposed in the second receiving groove 21. Specifically, the second receiving groove 21 is located in the floating hole 11, and the opening direction of the second receiving groove 21 and the floating hole 11 is the same.

[0028] Furthermore, the conductive floating connection terminal also includes a support member 6. A fifth receiving groove 27 is formed on the wall of the second receiving groove 21. The support member 6 is disposed within the fifth receiving groove 27, and the conductive member 3 also abuts against the support member 6. To further explain, a portion of the support member 6 is located within the fifth receiving groove 27, and another portion is located outside the fifth receiving groove 27. The portion of the support member 6 outside the fifth receiving groove 27 abuts against the conductive member 3. The support member 6 provides a positive force to the conductive member 3, thereby improving the contact effect between the conductive member 3 and the external conductor, and thus improving the current conduction performance between the conductive member 3 and the external conductor. In this embodiment, the support member 6 is made of a soft material, such as rubber or silicone. The axial cross-section of the support member 6 is circular.

[0029] The second floating body 24 has a fourth wall 26, and the first receiving groove 12 has a third wall 122 that is directly opposite to the first wall 121. The fourth wall 26 and the third wall 122 are in contact so that current can be conducted between them.

[0030] The conductive element 3 includes a first conductive element 31 and a plurality of second conductive elements 32. The first conductive element 31 is disposed in the second receiving groove 21, a portion of the first conductive element 31 abuts against the inner wall of the second receiving groove 21, and a portion of the first conductive element 31 abuts against the support element 6. The plurality of second conductive elements 32 are disposed at the ends of the first conductive element 31, and the plurality of second conductive elements 32 are distributed at intervals along the edge of the ends of the first conductive element 31. The plurality of second conductive elements 32 are located outside the second receiving groove 21, and the plurality of second conductive elements 32 extend into the first receiving groove 12. One side of each second conductive element 32 abuts against the gasket 7 to realize the current conduction between the support element 1, the gasket 7 and the conductive element 3.

[0031] The first conductor 31 is provided with a third receiving groove 311 to facilitate the insertion of an external conductor. When the external conductor is inserted into the third receiving groove 311, the outer wall surface of the first conductor 31 expands outward (radially) and abuts against the inner wall surface of the second receiving groove 21 and the support member 6, so that current can be conducted between the external conductor, the first conductor 31 and the floating member 2. Specifically, the external conductor can be a pin or other components that need to be electrically connected.

[0032] The end of the second conductor 32 away from the first conductor 31 is provided with an arc surface 321. The arc surface 321 abuts against the gasket 7. By setting the arc surface 321, the effective contact area between the second conductor 32 and the gasket 7 can be increased, thereby improving the current conduction effect between the second conductor 32 and the gasket 7.

[0033] The second conductor 32 has a bent portion 322 at its end near the first conductor 31. The side of the bent portion 322 away from the first wall surface 121 is in contact with the end of the first floating body 23. The bent portion 322 improves the bending performance of the entire second conductor 32, preventing the entire second conductor 32 from being crushed due to prolonged stress on the curved surface 321. Furthermore, the bent structure of the bent portion 322 provides a pressing force for the curved surface 321, which is beneficial for improving current conduction. In addition, the bent structure of the bent portion 322 improves its contact with the end of the first floating body 23. In this embodiment, the structure of each second conductor 32 is the same, and will not be discussed in detail here.

[0034] In practical applications, the first conductor 31 and multiple second conductors 32 are integrated into a single structure, and all are made of highly conductive and high-yield-strength materials, such as copper. The integrated structure of the conductor 3 helps to reduce the number of transfers during current conduction, allowing current to be directly conducted between the carrier 1, the conductor 3, and the external conductor, thereby reducing the resistance of the contact interface and avoiding excessive temperature rise during use.

[0035] Furthermore, the conductive floating connection terminal also includes a fastener 4, which abuts against the first conductor 31 and the second conductor 32. The fastener 4 applies a force to the first conductor 31 and the second conductor 32 to improve the fit between the ends of the first conductor 31 and the second conductor 32 and the first floating body 23, making the connection between the conductor 3 and the floating body 2 stable. When the floating body 2 moves, the conductor 3 can move with it, ensuring that the conductor 3 and the floating body 2 fit tightly together, avoiding a decrease in contact effect due to relative movement, which would affect the current conduction efficiency. In this embodiment, the cross-section of the fastener 4 is "L"-shaped or inverted "L"-shaped, with one part abutting against the first conductor 31 and the other part abutting against the second conductor 32.

[0036] In this embodiment, the conductive floating connection terminal further includes an elastic element 5, which is disposed on the second floating body 24 and abuts against the side of the second conductor 32 away from the gasket 7. The second floating body 24 has a second wall surface 22, which is directly opposite to the first wall surface 121. The elastic element 5 protrudes from the second wall surface 22, and the side of the second conductor 32 away from the gasket 7 abuts against the elastic element 5. Specifically, the elastic element 5 abuts against the back side of the arc surface 321 on the second conductor 32, where the back side of the arc surface 321 refers to the side away from the gasket 7. By providing the elastic element 5, a force can be applied to the second conductor 32, making the arc surface 321 of the second conductor 32 contact the gasket 7 more tightly, thereby improving the current conduction effect; it can also reduce the processing accuracy requirements of the conductor 3, and based on the stress deformation characteristics of the elastic element 5 itself, it can provide correction space for the second conductor 32 with processing errors. In this embodiment, the elastic element 5 is made of elastic silicone or rubber material.

[0037] Specifically, the radial cross section of the elastic element 5 is annular, and one end of the elastic element 5 has an inclined surface 51. The inclined surface 51 is inclined toward the center of the annulus. By setting the inclined surface 51, it can be adapted to the second conductor 32 to increase the contact area between the second conductor 32 and the first wall surface 121 of the first receiving groove 12.

[0038] Furthermore, a fourth receiving groove 25 is provided on the second wall surface 22 of the second floating body 24. The elastic element 5 is disposed in the fourth receiving groove 25, and a portion of the elastic element 5 protrudes from the second wall surface 22. The fourth receiving groove 25 helps to fix the position of the elastic element 5 and prevents the position of the elastic element 5 from deviating during use, thereby affecting the current conduction effect. In specific applications, the elastic element 5 has inclined surfaces 51 at both ends along the axial direction. The two inclined surfaces 51 are symmetrically distributed. During installation, the operator does not need to distinguish the direction of the elastic element 5 and can directly assemble the elastic element 5 into the fourth receiving groove 25. In this way, the operator reduces the step of distinguishing the direction of the elastic element 5 before assembly, greatly improves the assembly efficiency, and also avoids the phenomenon of incorrect installation of the elastic element 5.

[0039] Furthermore, a plurality of barrier bodies 13 are provided on the third wall surface 122 of the first receiving groove 12. The barrier bodies 13 protrude from the third wall surface 122, and the fourth wall surface 26 of the second floating body 24 abuts against the barrier bodies 13. When the floating member 2 moves relative to the supporting member 1, the second floating body 24 and the barrier bodies 13 will also move relative to each other. In specific applications, the end of the barrier body 13 away from the third wall surface 122 has a protrusion, which abuts against the fourth wall surface 26 of the second floating body 24. By setting the protrusion, the contact area between the second floating body 24 and the barrier body 13 can be reduced. In this embodiment, the barrier body 13 and the first shell 14 are an integral structure. If there are two or more barrier bodies 13, the multiple barrier bodies 13 are distributed radially in sequence at intervals.

[0040] To further explain, by setting up the barrier 13, the cold welding phenomenon between the third wall surface 122 and the fourth wall surface 26 can be avoided during later use due to the influence of high temperature (e.g., 250℃) environment. Since the contact area between the barrier 13 and the fourth wall surface 26 is smaller than the area of ​​direct contact between the third wall surface 122 and the fourth wall surface 26, even if the cold welding phenomenon occurs between the barrier 13 and the fourth wall surface 26, the fixed connection between the two can be broken by a relatively small force, so that the two can be restored to a state where they can move relative to each other.

[0041] like Figure 4 As shown, Figure 4 This is a physical test diagram of the first wall surface 121. The conductive floating connection terminal used in this test is the structure after removing the gasket 7 in this embodiment; in other words, the second conductor 32 directly abuts against the first wall surface 121. Further explanation: in this test, the carrier 1 is made of highly conductive pure copper (T2 copper), and the conductor 3 is made of a medium-hardness copper alloy (C18150).

[0042] Figure 4 What is shown is the first wall 121 after 200 floating cycles. As can be seen from the figure, point A is the floating area of ​​the second conductor 32 on the first wall 121; point B is the new turning tool marks in the floating area (the first wall 121 has been turned with a roughness of Ra0.8 and the surface has turning tool marks); point C is the depression in the floating area.

[0043] The first wall surface 121 is machined with a lathe tool to form a crest-trough microstructure. During the floating process, the arc surface 321 repeatedly rolls over the crests. Among them, the areas that are not sufficiently rubbed ( Figure 4 At point B in the diagram, the wave crest is sharp and the contact pressure is concentrated, resulting in a larger floating force. In the area that has undergone repeated friction (old knife marks), the wave crest is crushed and smoothed, and the measured floating force is relatively smaller. It can be seen that due to the different surface roughness at different locations within the floating area, the floating force fluctuates with the location of the contact point, which will cause obvious jamming during the floating process.

[0044] In addition, because the Vickers hardness of the second conductor 32 is greater than that of the bearing 1, the surface of the first wall 121 undergoes plastic deformation exceeding the yield limit, and the arc surface 321 crushes the crest and gradually forms a depression. Taking the second conductor 32 of the cantilever beam structure as an example, when the twenty-eight second conductors 32 are in contact with the first wall 121 at the same time, the arc surface 321 of some of the second conductors 32 falls into the depression, while the arc surface 321 of other second conductors 32 is located at the crest of the new tool mark. This will result in uneven downward pressure of the second conductors 32 of the multiple cantilever beam structures, inconsistent contact state of the arc surface 321, and thus unstable overall contact area, leading to problems of high contact resistance and temperature rise.

[0045] like Figure 5 and Figure 6 As shown, Figure 5 This is a physical test image of gasket 7; Figure 6 This is another physical test diagram of the first wall surface 121. The conductive floating connection terminal selected for this test is the structure containing the gasket 7 in this embodiment; in other words, the second conductor 32 directly abuts against the gasket 7. Further explanation: the carrier 1 is made of high-conductivity pure copper (T2 copper), the conductor 3 is made of medium-hardness copper alloy (C18150), and the gasket 7 is made of high-strength, high-conductivity copper alloy (C7025-TM04). The thickness of the gasket 7 is 0.15 mm.

[0046] Figure 5 The image shows gasket 7 after 500 float cycles. "F" in the figure represents the floating area of ​​the arc surface 321. As can be seen from the image, the surface of gasket 7 shows only normal friction marks and no indentations, indicating stable floating force and no jamming during the floating process. Simultaneously, it avoids the problem of uneven downward pressure from multiple cantilever beam structures' second conductors 32, ensuring consistent contact state of the arc surface 321 and stable overall contact area, which helps reduce contact resistance and temperature rise.

[0047] Figure 6 The figure shows the first wall surface 121 after 500 floating cycles. In the figure, "S" represents the area where the gasket 7 left its mark on the first wall surface 121 during the floating process, and "L" represents the area where the gasket 7 did not affect the first wall surface 121 during the floating process. As can be seen from the figure, when comparing the "S" area with the "L" area, the peaks of the "S" area on the first wall surface 121 are smoothed out more evenly, forming a better overall contact surface. This results in better contact between the gasket 7 and the first wall surface 121, thereby reducing contact resistance and temperature rise.

[0048] As shown in Table 1, Table 1 shows the floating force and normal force parameters measured during the experiments of Scheme 1 and Scheme 2. Scheme 1 refers to the conductive floating connection terminal without the gasket 7; Scheme 2 refers to the conductive floating connection terminal with the gasket 7 in this embodiment.

[0049] Table 1:

[0050] From the data in Table 1, we can see that Scheme 1 can withstand a floating force of less than or equal to 30N, corresponding to a normal force of 60N; Scheme 2 can withstand a floating force of less than or equal to 90N, corresponding to a normal force of 900N. In other words, when the normal force of Scheme 1 is less than or equal to 60N and the floating force is less than or equal to 30N, the first wall surface 121 will not have a dent, and there will be no jamming during the floating process; when the normal force of Scheme 2 is less than or equal to 90N and the floating force is less than or equal to 900N, the first wall surface 121 will not have a dent, and there will be no jamming during the floating process.

[0051] It is evident that, under the same buoyancy conditions, Scheme 2 can withstand a much greater positive force than Scheme 1; in other words, after setting the same buoyancy, Scheme 2 can be designed with a larger positive force value, and the increase in positive force is beneficial to reducing contact resistance, thereby reducing temperature rise.

[0052] like Figure 7 As shown, Figure 7 This is a test scenario diagram for conductive floating connection terminals. In the diagram, "211", "212", and "213" are three temperature acquisition points for different components. The temperature rise data is derived from the temperature information obtained from these acquisition points. "211" and "213" are temperature acquisition points for two external conductive plates that are conductively connected to the conductive floating connection terminals. "212" is the temperature acquisition point for the conductive floating connection terminals in Scheme 1 or Scheme 2. "201" represents the ambient temperature.

[0053] like Figures 8-11 As shown, and in conjunction with Table 2, Figure 8 This is one of the temperature test graphs under the usage conditions of Scheme 1; Figure 9 for Figure 8 A magnified view of a portion of the image; Figure 10 This is one of the temperature test graphs under the usage conditions of Scheme 2; Figure 11 for Figure 10 A magnified view of a portion of the data. Table 2 is one of the summary tables of temperature data for Scheme 1 and Scheme 2.

[0054] Test instructions: Both Scheme 1 and Scheme 2 use a hole diameter of 11.0mm, select 120 square millimeter copper wire (copper conductor with a cross-sectional area of ​​120 square millimeters), and pass a current of 350A for testing.

[0055] Table 2:

[0056] Combination Figures 8-11 As shown in Table 2, the temperature rise equals the temperature displayed at the test point. Ambient temperature. The temperature rise collected by "212" in Scheme 1 was 44.649℃, while the temperature rise collected by "212" in Scheme 2 was 37.182℃. It can be seen that the temperature rise difference between Scheme 1 and Scheme 2 is 7.467℃, thus verifying that Scheme 2 has a greater advantage in reducing temperature rise. Furthermore, it is easy to see from Table 2 that the contact resistance of Scheme 2 is lower than that of Scheme 1, verifying the above-mentioned content, that is, Scheme 2 increases the positive force by adding shim 7. The increased positive force flattens the microscopic protrusions on the contact interface, increases the actual number of contact points and the contact area, thereby reducing the contact resistance and ultimately achieving the effect of reducing temperature rise.

[0057] like Figures 12-15 As shown, and in conjunction with Table 3, Figure 12 This is the second temperature test diagram under the usage conditions of Scheme 1; Figure 13 for Figure 12 A magnified view of a portion of the image; Figure 14 This is the second temperature test diagram under the usage conditions of Scheme 2; Figure 15 for Figure 14 A magnified view of a portion of the data. Table 3 is the second summary table of temperature data for Scheme 1 and Scheme 2.

[0058] Test instructions: Both Scheme 1 and Scheme 2 use a 9.0mm aperture, 70 square millimeter copper wire (copper conductor with a cross-sectional area of ​​70 square millimeters), and a 250A current is applied for testing.

[0059] Table 3:

[0060] Combination Figures 12-15 As shown in Table 3, the temperature rise collected by "212" in Scheme 1 is 36.681℃, while the temperature rise collected by "212" in Scheme 2 is 31.048℃. It can be seen that the temperature rise of Scheme 1 and Scheme 2 differs by 5.633℃, thus verifying that Scheme 2 has the advantage of reducing the temperature rise.

[0061] like Figures 16-19 As shown, and in conjunction with Table 4, Figure 16 This is the third temperature test diagram under the usage conditions of Scheme 1; Figure 17 for Figure 16 A magnified view of a portion of the image; Figure 18 This is the third temperature test diagram under the usage conditions of Scheme 2; Figure 19 for Figure 18A magnified view of a portion of the data. Table 4 is the third summary table of temperature data for Scheme 1 and Scheme 2.

[0062] Test instructions: Both Scheme 1 and Scheme 2 use a 6.0mm aperture, 25 square millimeter copper wire (copper conductor with a cross-sectional area of ​​25 square millimeters), and a 120A current is applied for testing.

[0063] Table 4:

[0064] Combination Figures 16-19 As shown in Table 4, the temperature rise collected by "212" in Scheme 1 is 34.253℃, while the temperature rise collected by "212" in Scheme 2 is 27.917℃. It can be seen that the temperature rise of Scheme 1 and Scheme 2 differs by 6.336℃, thus verifying that Scheme 2 has the advantage of reducing the temperature rise.

[0065] In summary, by adding a gasket 7 between the second conductor 32 and the first wall 121 of the first receiving groove 12, and by ensuring that the Vickers hardness of the gasket 7 is greater than that of the second conductor 32 and the bearing 1, even if the positive force between the second conductor 32 and the gasket 7 is increased, no depression or bulge will appear in the contact area between the two. Therefore, without affecting other functions, the contact resistance can be reduced by increasing the positive force, thereby achieving the effect of reducing temperature rise.

[0066] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A conductive floating connection terminal, characterized in that, include: Support component (1); The floating component (2) is slidably disposed within the bearing component (1); Conductive element (3), which is directly or indirectly electrically connected to an external conductor; and Gasket (7) abuts against the carrier (1) and the conductor (3) respectively. The conductor (3) can conduct electricity with the carrier (1) through the gasket (7); Among them, the Vickers hardness of the gasket (7) is greater than that of the conductor (3), and the Vickers hardness of the conductor (3) is greater than that of the bearing (1).

2. The conductive floating connection terminal according to claim 1, characterized in that, The carrier (1) has a floating hole (11) and a first receiving groove (12). The first receiving groove (12) is opened around the floating hole (11) and the floating hole (11) communicates with the first receiving groove (12). The floating member (2) is movably disposed in the floating hole (11) and the first receiving groove (12). The gasket (7) is disposed in the first receiving groove (12) and the gasket (7) abuts against the first wall surface (121) of the first receiving groove (12).

3. The conductive floating connection terminal according to claim 2, characterized in that, The floating component (2) has a second receiving groove (21); The conductive element (3) includes a first conductive element (31) and a plurality of second conductive elements (32). The first conductive element (31) is disposed in the second receiving groove (21), and the plurality of second conductive elements (32) are disposed at the ends of the first conductive element (31). The plurality of second conductive elements (32) extend into the first receiving groove (12). One side of each second conductive element (32) abuts against the side of the gasket (7) away from the first wall surface (121). The first conductor (31) has a third receiving groove (311), and an external conductor is inserted into the third receiving groove (311) so that current can be conducted between the external conductor, the first conductor (31), the second conductor (32), the gasket (7) and the carrier (1); Among them, the Vickers hardness of the gasket (7) is greater than that of the second conductor (32), and the Vickers hardness of the second conductor (32) is greater than that of the bearing (1).

4. The conductive floating connection terminal according to claim 3, characterized in that, The second conductor (32) has an arc surface (321) that abuts against the side of the gasket (7) away from the first wall surface (121); And / or the second conductor (32) also has a bend (322) disposed at the end of the second conductor (32) near the first conductor (31), and one side of the bend (322) abuts against the end of the floating member (2).

5. The conductive floating connection terminal according to claim 3, characterized in that, It also includes an elastic element (5), which protrudes from the second wall (22) of the floating element (2), and the side of the second conductor (32) away from the first wall (121) abuts against the elastic element (5).

6. The conductive floating connection terminal according to claim 5, characterized in that, The floating member (2) also has a fourth receiving groove (25) opened on the second wall (22), and the elastic member (5) is disposed in the fourth receiving groove (25).

7. The conductive floating connection terminal according to claim 2, characterized in that, The first receiving groove (12) has a third wall (122) directly opposite the first wall (121), and the third wall (122) is provided with a plurality of barriers (13). The floating member (2) also has a fourth wall (26), which is in contact with the plurality of barriers (13).

8. The conductive floating connection terminal according to claim 3, characterized in that, It also includes a fastener (4) that abuts against the first conductor (31) and a plurality of second conductors (32), so that the conductor (3) is fixed to the floating member (2).

9. The conductive floating connection terminal according to claim 3, characterized in that, It also includes a support member (6), a floating member (2) having a fifth receiving groove (27), the fifth receiving groove (27) being opened on the inner wall surface of the second receiving groove (21), the support member (6) being disposed in the fifth receiving groove (27), the support member (6) being in contact with the first conductor (31); an external conductor being inserted into the third receiving groove (311), so that the outer wall surface of the first conductor (31) abuts against the inner wall surface of the second receiving groove (21) and the support member (6).

10. The conductive floating connection terminal according to any one of claims 1-9, characterized in that, The Vickers hardness of the gasket (7) is 190-240 HV, the Vickers hardness of the conductor (3) is 160-200 HV, and the Vickers hardness of the bearing (1) is 80-110 HV.

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