Convergence unit and convergence device
By designing heat dissipation gaps and optimizing the input row structure in the combiner unit, combined with the air duct of the combiner cabinet, the heat accumulation problem of the combiner device under high load and high power operation is solved, improving heat dissipation efficiency and safety.
Patent Information
- Application Number
- CN202520525792.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Combiner devices are prone to heat buildup under high load and high power operation, which affects safety and service life.
By designing an input row in the combiner unit to form a heat dissipation gap, and combining it with the electrical connection of the output components and control components, the structure of the input row is optimized to enhance heat dissipation efficiency. Combined with the air duct design of the combiner cabinet, an active heat dissipation path is formed.
It improves the heat dissipation power of the combiner unit, reduces the operating temperature, optimizes heat accumulation, and extends its service life.
Smart Images
Figure CN223942177U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit busbars, and more particularly to a busbar unit and a busbar device. Background Technology
[0002] Busbar devices are an indispensable and important component in power systems, undertaking multiple tasks such as current collection, circuit protection, and simplified system maintenance. During busbar operation, components such as the busbar inevitably generate heat. Under high load and high power conditions, the heat generated by the busbar can lead to significant heat accumulation within the busbar device, affecting its safety and service life. Utility Model Content
[0003] One objective of this invention is to provide a bus unit and a bus device that aims to solve the technical problem of heat accumulation in bus devices during high-load, high-power bus operations.
[0004] To achieve the above objectives, the present invention provides a solution: a bus unit, which includes a control component, an input component, and an output component. Specifically, the input component includes an input bar and multiple input terminals that are electrically connected, and the input bar forms a heat dissipation gap; the input bar and the output component are electrically connected through the control component.
[0005] In some embodiments of this application, each input row is electrically connected to at least eight input terminals.
[0006] In some embodiments of this application, the cross-sectional area of the input array on a plane perpendicular to its flow direction is S, 800 mm. 2 ≤S≤1500mm 2 .
[0007] In some embodiments of this application, the input row includes a first row and a second row, and the heat dissipation gap includes a first heat dissipation gap. Both the first row and the second row are electrically connected to the control component. The first row has a plurality of first conductive holes, and the second row has a plurality of second conductive holes. Each input terminal passes through the first conductive hole and the second conductive hole, and a first heat dissipation gap is formed between the first row and the second row.
[0008] In some embodiments of this application, the input row further includes a third row, and the first row and the second row are electrically connected to the control component through the third row, with the third row sandwiched between the first row and the second row.
[0009] In some embodiments of this application, the input row further includes a fourth row, and the heat dissipation gap further includes a second heat dissipation gap. The first row and the second row are electrically connected to the control component through the third row and the fourth row. The first row, the third row, the second row and the fourth row are stacked at intervals, and a second heat dissipation gap is formed between the third row and the fourth row.
[0010] In some embodiments of this application, the input row includes a first part, a second part, and a third part connected in sequence, an input terminal is electrically connected to at least one of the first part and the second part, the third part is electrically connected to a control component, and the heat dissipation gap includes a third heat dissipation gap, which is formed by the first part, the second part, and the third part together.
[0011] In some embodiments of this application, the output component includes an output bar and an output terminal. The output terminal is electrically connected to the control component through the output bar. There is an electrical clearance L between the output bar and the input bar, where 55mm ≤ L ≤ 93mm.
[0012] The present invention also provides a junction device, which includes a junction cabinet and a junction unit as described above, wherein the junction cabinet has an accommodating space inside, and the junction unit is disposed in the accommodating space.
[0013] In some embodiments of this application, the combiner cabinet is further provided with an air inlet and an air outlet, which extend inward from the surface of the combiner cabinet and communicate with the accommodating space.
[0014] In some embodiments of this application, the line connecting the air inlet and the air outlet passes through the heat dissipation gap.
[0015] The beneficial effects of this utility model are as follows:
[0016] The input component includes an electrically connected input bar and multiple input terminals. The input bar forms a heat dissipation gap. When the busbar is performing busbar operation, the heat dissipation gap helps to dissipate the heat on the input bar more efficiently, thereby alleviating the heat accumulation problem during high load and high power operation.
[0017] Compared with the prior art, this application improves the efficiency of heat dissipation of the input busbar by modifying its structure. This can enhance the overall heat dissipation power of the busbar without affecting the heat dissipation effect of the other heat dissipation structures, optimize the heat accumulation of the busbar, and reduce the operating temperature of the busbar. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of the bus unit provided in this embodiment of the utility model;
[0020] Figure 2This is a front view of the bus unit provided in an embodiment of this utility model;
[0021] Figure 3 This is a schematic diagram of the overall structure of the combiner device provided in this embodiment of the utility model.
[0022] Explanation of icon numbers:
[0023] 10. Control component; 21. Input row; 211. First row; 2111. First conductive hole; 212. Second row; 2121. Second conductive hole; 213. Third row; 214. Fourth row; 215. First part; 216. Second part; 217. Third part; 22. Input terminal; 23. Heat dissipation gap; 231. First heat dissipation gap; 232. Second heat dissipation gap; 233. Third heat dissipation gap; 30. Output component; 31. Output row; 32. Output terminal; 40. Combiner cabinet; 41. Air inlet; 42. Air outlet. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] As a key integrated unit in modern power grid systems, combiner units undertake core functions such as current collection and distribution from multiple sources, overload protection, and operational status monitoring. Due to the internal resistance of the current-carrying components within the combiner unit, heat generation is inevitable during operation, manifesting macroscopically as heat accumulation within the unit. Excessive unit temperature undoubtedly affects the current-carrying efficiency and lifespan of the components. While existing technologies employ various methods to enhance heat dissipation by adjusting the combiner cabinet's structure and air ducts, the large cross-section of high-power current-carrying components means that external cooling is still insufficient, resulting in high operating temperatures at the core of the current-carrying components.
[0026] Please see Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the overall structure of the bus unit provided in this embodiment of the utility model; Figure 2 This is a front view of the bus unit provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the overall structure of the combiner device provided in this embodiment of the utility model.
[0027] To address the technical problem of heat buildup in combiner cabinets under high load and high power operation in the prior art, this utility model discloses a combiner unit, which includes a control component 10, an input component, and an output component 30. Specifically, the input component includes an input bar 21 and multiple input terminals 22 that are electrically connected, with the input bar 21 forming a heat dissipation gap 23; the input bar 21 and the output component 30 are electrically connected through the control component 10.
[0028] In this embodiment, the input row 21 itself forms a heat dissipation gap 23. Unlike the passive heat dissipation achieved by modifying the combiner cabinet 40 in the prior art, the heat dissipation gap 23 allows the input row 21 to actively form an open heat conduction path, increasing the effective heat dissipation area of the input row 21 and increasing the heat dissipation power. This setting expands the solution of optimizing heat dissipation by setting the input row 21 itself on the basis of the passive heat dissipation of the prior art. On the one hand, the technical solution of this embodiment achieves enhanced heat dissipation of the input row 21 itself through structural optimization, achieving a systematic improvement in thermal management efficiency without adding external heat dissipation devices. On the other hand, when higher power high-intensity heat dissipation is required, the technical solution provided by this embodiment can be compatible with various mature air-cooling structures of the combiner cabinet 40, increasing the net heat dissipation power of the equipment. That is, this embodiment increases the heat dissipation effect of the input row 21 without weakening the existing heat dissipation power.
[0029] In some embodiments of this application, each input row 21 is electrically connected to at least eight input terminals 22.
[0030] Each input bus 21 is electrically connected to at least eight input terminals 22, enabling the bus unit to carry a larger current at once and output a larger power through the output component 30.
[0031] In some embodiments of this application, the cross-sectional area of the input drain 21 on a plane perpendicular to its flow direction is S = 800 mm. 2 ≤S≤1500mm 2 .
[0032] It should be clarified that the cross-sectional area mentioned in this embodiment should be understood as the area of the shape obtained by intersecting a plane perpendicular to the current-carrying direction with the conductive structure. The larger the cross-sectional area of the input row 21, the stronger its current-carrying capacity. However, if the cross-sectional area of the input row 21 is too large, it will lead to additional waste of space and materials. 800mm 2 ≤S≤1500mm 2 While meeting the 2500A current load of a common multi-input terminal 22 bus, it can achieve this without excessive material waste; for example, S = 800mm. 2 S = 900mm 2 S = 1200mm 2S = 1500mm 2 wait.
[0033] In some embodiments of this application, the input row 21 includes a first row 211 and a second row 212, and the heat dissipation gap 23 includes a first heat dissipation gap 231. The first row 211 and the second row 212 are both electrically connected to the control component 10. The first row 211 has a plurality of first conductive holes 2111, and the second row 212 has a plurality of second conductive holes 2121. Each input terminal 22 passes through the first conductive hole 2111 and the second conductive hole 2121, and a first heat dissipation gap 231 is formed between the first row 211 and the second row 212.
[0034] The input terminal 22 is provided with a first conductive hole 2111 and a second conductive hole 2121 to realize the electrical connection between the input terminal 22 and the first row 211 and the second row 212. A first heat dissipation gap 231 is formed between the first row 211 and the second row 212. That is, without affecting the total current carrying cross-sectional area, this embodiment forms a first heat dissipation gap 231 in the core of the current carrying bar in the existing single row current carrying structure, so as to reduce the farthest distance of heat dissipation from the inside of the input bar 21 to the surface and increase the heat dissipation efficiency.
[0035] For example, based on actual current carrying requirements, the cross-sectional thickness and width of the input row 21 are pre-calculated when using a full row of current carriers. The thickness of the first row 211 and the second row 212 are configured to be the same and half the preset thickness of the input row 21. The widths of the first row 211, the second row 212, and the preset input row 21 are the same. Ignoring the heat dissipation effect of the narrow side of the input row 21, the heat dissipation path of this application is shortened by half compared to the heat dissipation path of a full row of current carriers, significantly increasing heat dissipation efficiency.
[0036] It should be understood that this embodiment only illustrates the case where the input row 21 is configured as the first row 211 and the second row 212. Those skilled in the art can add more layers without creative effort, and achieve a larger heat dissipation specific surface area without changing the total current carrying area of the current carrying row. This will not be elaborated here.
[0037] Furthermore, the input row 21 also includes a third row 213. The first row 211 and the second row 212 are electrically connected to the control component 10 through the third row 213, with the third row 213 sandwiched between the first row 211 and the second row 212.
[0038] The first row 211 and the second row 212 are sandwiched together with the third row 213. On the one hand, the third row 213 enables the electrical connection between the first row 211, the second row 212 and the control component 10. On the other hand, the third row 213 can limit the first heat dissipation gap 231. The thickness of the third row 213 is configured according to the heat dissipation requirements during the design. When the first row 211 and the second row 212 are assembled and sandwiched together with the third row 213, the first heat dissipation gap 231 that meets the requirements is naturally formed, which improves the assembly efficiency of the bus unit.
[0039] Furthermore, the input row 21 also includes a fourth row 214, and the heat dissipation gap 23 also includes a second heat dissipation gap 232. The first row 211 and the second row 212 are electrically connected to the control component 10 through the third row 213 and the fourth row 214. The first row 211, the third row 213, the second row 212 and the fourth row 214 are stacked at intervals, and the second heat dissipation gap 232 is formed between the third row 213 and the fourth row 214.
[0040] Similar to the arrangement of the first row 211 and the second row 212, the arrangement of the third row 213 and the fourth row 214, while retaining the limiting effect of the third row 213 on the first heat dissipation gap 231, enhances the heat dissipation efficiency between the first row 211 and the second row 212 and the control component 10 by forming the second heat dissipation gap 232, thus avoiding overheating in the high-load area near the control component 10.
[0041] As previously explained, those skilled in the art can add more layers to the first row 211 and the second row 212. Similarly, those skilled in the art can add more layers to the third row 213 and the fourth row 214 to increase the heat dissipation specific surface area by forming more second heat dissipation gaps 232, thereby further increasing the heat dissipation efficiency.
[0042] In some embodiments of this application, the input row 21 includes a first part 215, a second part 216 and a third part 217 connected in sequence. The input terminal 22 is electrically connected to at least one of the first part 215 and the second part 216. The third part 217 is electrically connected to the control component 10. The heat dissipation gap 23 includes a third heat dissipation gap 233, which is formed by the first part 215, the second part 216 and the third part 217 together.
[0043] The first part 215, the second part 216 and the third part 217 together form the third heat dissipation gap 233. While maintaining a good heat dissipation effect, the length of the input row 21 is reduced, the overall size of the bus unit is reduced, and the subsequent assembly of the bus unit is facilitated.
[0044] In some embodiments of this application, the output component 30 includes an output bar 31 and an output terminal 32. The output terminal 32 is electrically connected to the control component 10 through the output bar 31. There is an electrical clearance L between the output bar 31 and the input bar 21, where 55mm ≤ L ≤ 93mm.
[0045] When input row 21 and output row 31 are located close to each other, there is a risk of electric shock. The electrical clearance is designed to reduce this risk. If the electrical clearance is too small, it will not provide reliable insulation; if the electrical clearance is too large, it will occupy extra space, resulting in a decrease in the effective volume of the housing. 55mm ≤ L ≤ 93mm is a choice that ensures good insulation without excessively occupying housing space. Examples include L = 55mm, L = 60mm, L = 65mm, L = 70mm, L = 80mm, and L = 90mm.
[0046] To address the technical problem of heat buildup in combiner cabinets under high load and high power operation in the prior art, this utility model also discloses a combiner device, which includes a combiner cabinet 40 and a combiner unit as described above. The combiner cabinet 40 has an internal accommodating space, and the combiner unit is disposed in the accommodating space.
[0047] Because the busbar device disclosed in this embodiment includes the busbar unit of any of the above-mentioned embodiments, the busbar device of this embodiment has at least the technical effects of the above-mentioned embodiments. That is, the busbar device improves the efficiency of heat dissipation of part of the input busbar 21 by improving the structure of the input busbar 21 itself. It can enhance the total heat dissipation power of the busbar device without affecting the heat dissipation effect of the other heat dissipation structures of the busbar device, optimize the heat accumulation of the busbar device, and reduce the operating temperature of the busbar device.
[0048] In some embodiments of this application, the junction box 40 is also provided with an air inlet 41 and an air outlet 42, which extend inward from the surface of the junction box 40 and communicate with the accommodating space.
[0049] The placement of the air inlet 41 and air outlet 42 enhances the heat dissipation performance of the combiner cabinet 40. As described in the above embodiments, the heat dissipation gap 23 is compatible with the heat dissipation optimization of the combiner device and the placement on the combiner cabinet 40. Therefore, in this embodiment, the placement of the air inlet 41 and air outlet 42 further optimizes the heat dissipation effect of the combiner device without compromising the heat dissipation performance of the combiner unit.
[0050] In some embodiments of this application, the line connecting the air inlet 41 and the air outlet 42 passes through the heat dissipation gap 23.
[0051] An air duct is formed between the air inlet 41 and the air outlet 42 within the junction box 40. The air duct passes through the heat dissipation gap 23, which makes the cooling airflow flow more smoothly in the accommodating space, with less obstruction from the junction unit, and can more effectively remove the heat from the surface of the input row 21 on both sides of the heat dissipation gap 23.
[0052] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indicator will also change accordingly.
[0053] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.
[0054] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0055] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the design concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A bus unit, characterized in that, include: Control components; An input component, the input component including an electrically connected input bar and a plurality of input terminals, the input bar forming a heat dissipation gap; The output component, the input row and the output component are electrically connected through the control component.
2. The bus unit according to claim 1, characterized in that, Each of the input rows is electrically connected to at least eight of the input terminals.
3. The bus unit according to claim 2, characterized in that, The cross-sectional area of the input channel on the plane perpendicular to its flow direction is S = 800 mm². 2 ≤S≤1500mm 2 .
4. The bus unit according to claim 1, characterized in that, The input row includes a first row and a second row, and the heat dissipation gap includes a first heat dissipation gap. The first row and the second row are both electrically connected to the control component. The first row has multiple first conductive holes, and the second row has multiple second conductive holes. Each input terminal passes through the first conductive hole and the second conductive hole, and the first heat dissipation gap is formed between the first row and the second row.
5. The bus unit according to claim 4, characterized in that, The input row further includes a third row, and the first row and the second row are electrically connected to the control component through the third row, with the first row and the second row sandwiching the third row.
6. The bus unit according to claim 5, characterized in that, The input row further includes a fourth row, and the heat dissipation gap further includes a second heat dissipation gap. The first row and the second row are electrically connected to the control component through the third row and the fourth row. The first row, the third row, the second row and the fourth row are stacked at intervals, and the second heat dissipation gap is formed between the third row and the fourth row.
7. The bus unit according to any one of claims 1-6, characterized in that, The input row includes a first part, a second part, and a third part connected in sequence. The input terminal is electrically connected to at least one of the first part and the second part. The third part is electrically connected to the control component. The heat dissipation gap includes a third heat dissipation gap, which is formed by the first part, the second part, and the third part together.
8. The bus unit according to any one of claims 1-6, characterized in that, The output component includes an output bar and an output terminal. The output terminal is electrically connected to the control component through the output bar. There is an electrical clearance L between the output bar and the input bar, where 55mm ≤ L ≤ 93mm.
9. A combiner device, characterized in that, include: The junction box has internal storage space; The bus unit according to any one of claims 1-8 is disposed in the accommodating space.
10. The combiner device according to claim 9, characterized in that, The junction box is also provided with an air inlet and an air outlet, which extend inward from the surface of the junction box and communicate with the accommodating space.
11. The combiner device according to claim 10, characterized in that, The line connecting the air inlet and the air outlet passes through the heat dissipation gap.