Heat dissipation device for high-capacity relay and relay

Abstract

The utility model discloses a heat dissipation device for a high-capacity relay and a relay, and relates to the field of relays, the heat dissipation device for the high-capacity relay comprises two heat dissipation sheets which are arranged in a matching manner, the two heat dissipation sheets are arranged in opposite directions, each heat dissipation sheet comprises a connecting section and a heat dissipation section, and the connecting section is connected with the heat dissipation section. The heat dissipation device is composed of two cooling fins which are arranged in opposite directions, a bent section is arranged between the connecting section and the heat dissipation section so that the connecting section and the heat dissipation section can be located on two parallel planes respectively, and the connecting sections of the two cooling fins are both installed on the same side of the static reed, and the heat dissipation device is composed of the two cooling fins which are arranged in opposite directions so that the connecting sections of the two cooling fins can be located on the same plane. Therefore, the two connecting sections can be installed on the same side, away from the static contacts, of the static reed, the two connecting sections and the static contacts on the other side are distributed at the two ends of the static reed, and the heat dissipation effect of the heat dissipation device can be effectively improved. And the structures of the two cooling fins are consistent, so that the assembly efficiency is effectively improved through forward and reverse installation of the same structural member.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of relay, more specifically, relate to a high capacity relay heat abstractor and relay. BACKGROUND

[0002] With the rapid development of solar photovoltaic industry, higher requirements are put forward for the relay used for solar photovoltaic inverter, especially the higher requirements for the relay environment, according to market demand, its load voltage reaches 1000Va.c., switching current needs to reach at least 100A, and on current exceeds 320A.

[0003] This type of relay is usually used in large ships, offshore oil wells and large coastal inverters, because the environment humidity is high, and Cl ion and S ion can affect the internal structure of the relay, resulting in failure of the relay, therefore, the relay needs to be sealed, then the high current relay itself generates high heat, and the relay needs to be sealed, resulting in serious heat generation inside the relay, therefore, the problem of heat dissipation of the relay needs to be solved, thereby improving the service life and reliability of the relay.

[0004] In summary, how to improve the heat dissipation performance of the relay and improve the service life and reliability of the relay is a problem to be solved by the technical personnel in the field at present. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims at providing a high capacity relay heat abstractor and relay, which effectively improves the heat dissipation performance of the relay.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A high capacity relay heat abstractor, comprising a plurality of cooperatively arranged heat dissipation fins, and the installation direction of every two adjacent heat dissipation fins is opposite.

[0008] Each heat dissipation fin comprises a connecting section and a heat dissipation section, and a bending section is arranged between the connecting section and the heat dissipation section, so that the connecting section and the heat dissipation section are respectively located on two parallel planes.

[0009] The connecting sections of the plurality of heat dissipation fins are installed on the same side of the static spring piece.

[0010] Preferably, a recess is formed on each heat dissipation fin, and the recess is formed at the connecting section and the bending section, so that the two connecting sections of the two cooperatively arranged heat dissipation fins are arranged in close contact, and the width of the two connecting sections is the same as that of the heat dissipation section.

[0011] Preferably, a clearance groove is formed on each of the fins, and the clearance groove is formed at the connecting section and the bending section, so that the two connecting sections of the two matched fins are arranged on the same side, and a gap exists between the two connecting sections.

[0012] Preferably, the heat radiating section comprises a plurality of heat radiating teeth which are equidistantly distributed on the side away from the connecting section.

[0013] Preferably, each two adjacent heat radiating teeth are connected to each other.

[0014] A relay comprises a base, and a static spring assembly is arranged in the base, wherein the static spring assembly comprises a static spring sheet and a heat radiating device as claimed in any one of the preceding claims arranged on one side of the static spring sheet.

[0015] A shell is arranged on the base, and a first through hole is formed on the shell, so that the fin is located in the first through hole.

[0016] Preferably, the fin is located on the side of the static spring sheet away from the static contact.

[0017] Preferably, the connecting section is riveted to one side of the static spring sheet.

[0018] Preferably, a cover plate is arranged on the shell at the first through hole, and a glue layer is encapsulated on the cover plate, and the surface of the glue layer is flush with the surface of the shell.

[0019] Preferably, a second through hole is formed on the shell, and an explosion-proof window is arranged in the second through hole, so that the second through hole is divided into an upper groove and a lower groove, and the explosion-proof window is formed with a notch at the edge of the lower groove.

[0020] The heat radiating device for the high-capacity relay comprises a plurality of fins arranged in opposite directions, so that the connecting sections of the plurality of fins are located on the same plane, thereby enabling the plurality of connecting sections to be installed on the same side of the static spring sheet away from the static contact, and enabling the static contacts on the other side to be distributed on both ends of the static spring sheet, so as to effectively improve the heat radiating effect of the heat radiating device. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0022] Figure 1 Fig. 1 is a structural schematic diagram of a heat dissipation device in the embodiment;

[0023] Figure 2 Fig. 2 is a schematic diagram of the heat dissipation device being mounted on a static spring sheet in the embodiment;

[0024] Figure 3 Fig. 3 is a schematic diagram of the heat dissipation device being mounted in a relay in the embodiment;

[0025] Figure 4 Fig. 4 is a sectional view of the relay in the embodiment.

[0026] Figures 1-4 In the drawings, reference numerals include:

[0027] 1, heat dissipation sheet; 11, connecting section; 12, heat dissipation section; 13, bending section; 14, clearance groove; 15, heat dissipation tooth; 2, static spring sheet; 3, base; 4, cover plate; 5, adhesive layer; 6, first through hole; 7, second through hole; 8, explosion-proof window; 9, shell. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the common meanings understood by those skilled in the art to which the present application belongs. The terms "first", "second", and similar terms used in the present application do not represent any order, number, or importance. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly. The embodiments of the present application disclose a heat dissipation device for a high-capacity relay and a relay.

[0030] The core of the present application is to provide a heat dissipation device for a high-capacity relay and a relay.

[0031] Please refer to Figures 1 to 2 .

[0032] The heat dissipation device for high-capacity relay provided by the utility model comprises a plurality of heat dissipation fins 1 arranged in cooperation, the arrangement directions of every two adjacent heat dissipation fins 1 are opposite, each heat dissipation fin 1 comprises a connecting section 11 and a heat dissipation section 12, a bending section 13 is arranged between the connecting section 11 and the heat dissipation section 12, so that the connecting section 11 and the heat dissipation section 12 are located on two parallel planes respectively, and the connecting sections 11 of the plurality of heat dissipation fins 1 are all mounted on the same side of the static spring sheet 2.

[0033] Specifically, the following two heat dissipation fins are taken as examples for illustration, the heat dissipation fin 1 is composed of the connecting section 11, the bending section 13 and the heat dissipation section 12, the bending section 13 is connected between the connecting section 11 and the heat dissipation section 12, the connecting section 11 is the main structure connected with the static spring sheet, the heat dissipation section 12 is the main heat dissipation structure of the heat dissipation fin 1, and the bending section 13 is used for locating the connecting section 11 and the heat dissipation section 12 on two parallel and non-coincident planes, i.e. the connecting section 11 and the heat dissipation section 12 are located on two mutually parallel vertical planes respectively, and the bending section 13 is located on a horizontal plane perpendicular to the two vertical planes, and the two ends of the bending section 13 connected with the connecting section 11 and the heat dissipation section 12 are all provided with chamfers.

[0034] The heat dissipation device for high-capacity relay provided by the utility model comprises a plurality of heat dissipation fins 1 arranged in cooperation, the arrangement directions of every two adjacent heat dissipation fins 1 are opposite, each heat dissipation fin 1 comprises a connecting section 11 and a heat dissipation section 12, a bending section 13 is arranged between the connecting section 11 and the heat dissipation section 12, so that the connecting section 11 and the heat dissipation section 12 are located on two parallel planes respectively, and the connecting sections 11 of the plurality of heat dissipation fins 1 are all mounted on the same side of the static spring sheet 2.

[0035] The heat dissipation device for high-capacity relay provided by the utility model comprises a plurality of heat dissipation fins 1 arranged in cooperation, the arrangement directions of every two adjacent heat dissipation fins 1 are opposite, each heat dissipation fin 1 comprises a connecting section 11 and a heat dissipation section 12, a bending section 13 is arranged between the connecting section 11 and the heat dissipation section 12, so that the connecting section 11 and the heat dissipation section 12 are located on two parallel planes respectively, and the connecting sections 11 of the plurality of heat dissipation fins 1 are all mounted on the same side of the static spring sheet 2.

[0036] In one specific embodiment, with reference to Figure 1 and Figure 2 The heat dissipation device for high-capacity relay provided by the utility model comprises a plurality of heat dissipation fins 1 arranged in cooperation, the arrangement directions of every two adjacent heat dissipation fins 1 are opposite, each heat dissipation fin 1 comprises a connecting section 11 and a heat dissipation section 12, a bending section 13 is arranged between the connecting section 11 and the heat dissipation section 12, so that the connecting section 11 and the heat dissipation section 12 are located on two parallel planes respectively, and the connecting sections 11 of the plurality of heat dissipation fins 1 are all mounted on the same side of the static spring sheet 2.

[0037] Specifically, the accommodation slot 14 is provided through the connection section 11 and the bending section 13, one end of the accommodation slot 14 is located below the heat dissipation section 12, so that one part of the heat dissipation section 12 is supported by the bending section 13, and the other part is suspended. During installation, the connection section 11 of one of the two cooperating heat dissipation fins 1 is located in the accommodation slot 14 of the other heat dissipation fin 1, so that the heat dissipation sections 12 of the two heat dissipation fins 1 are located in the same width range.

[0038] Optionally, the connection sections 11 of the two heat dissipation fins 1 are arranged in close contact and have the same width as the heat dissipation section 12, that is, the accommodation slot 14 has the same width as the connection section 11, and both are half the width of the heat dissipation section 12, to ensure that the two heat dissipation fins 1 can be closely matched after installation, not only saving space, but also further enhancing the heat dissipation effect. Such a design allows the heat dissipation device to maximize the use of the heat dissipation area while maintaining a compact structure, effectively improving the heat dissipation efficiency.

[0039] Optionally, unlike the above scheme, there is a gap between the connection sections 11 of the two heat dissipation fins 1, that is, the width of the accommodation slot 14 is greater than the width of the connection section 11, and the width of the connection section 11 is less than half the width of the heat dissipation section 12, providing a certain elastic space for the heat dissipation fin 1 during installation and disassembly, which helps the heat dissipation device better adapt to different sizes or slight deviations of the static spring 2, enhancing the flexibility and compatibility of installation. The existence of the gap may also help to reduce stress concentration caused by thermal expansion. In a high-load operating state, the relay and the heat dissipation device will expand to a certain extent due to the increase in temperature. The gap between the connection sections 11 can provide a certain buffer space for such thermal expansion, reducing the stress caused by the mismatch of the thermal expansion coefficients of the materials, thereby improving the stability and durability of the entire heat dissipation system.

[0040] On the basis of any one of the above embodiments, with reference to Figure 1 and Figure 2 the heat dissipation section 12 includes a plurality of heat dissipation teeth 15 distributed equidistantly on the side away from the connection section 11.

[0041] Specifically, the arrangement of the plurality of heat dissipation teeth 15 effectively increases the heat dissipation effect of the heat dissipation fin 1, the heat dissipation teeth 15 effectively increase the heat dissipation area, so that heat can be dissipated to the surrounding environment more quickly, and at the same time, through the small channels between the heat dissipation teeth, the convection effect of air is enhanced, thereby improving the heat dissipation efficiency.

[0042] The shape and size of the heat dissipation teeth 15 can be optimized according to the actual application scenario and heat dissipation requirements. For example, the heat dissipation teeth 15 can be in the form of an elongated strip, a triangle, a rhombus, or other geometric shapes to increase the heat dissipation area and provide additional heat dissipation channels. At the same time, the number, distribution, and arrangement of the heat dissipation teeth 15 can also be adjusted according to specific circumstances to achieve the best heat dissipation effect. In addition, the design of the heat dissipation teeth 15 also needs to consider the direction and speed of air flow. In actual application, the direction and angle of the heat dissipation teeth 15 can be reasonably arranged, and the overall layout of the heat dissipation copper bar can be optimized to guide air flow and enhance the convective heat dissipation effect.

[0043] Further, each two adjacent heat dissipation teeth 15 are connected to each other.

[0044] Specifically, each heat dissipation tooth 15 is connected to each other, not only enhancing the overall structural strength of the heat dissipation fin 1, but also making the heat transfer between the heat dissipation teeth more uniform and efficient. The heat dissipation teeth 15 connected to each other form a continuous heat dissipation network, which can ensure that the heat is quickly transferred from one end of the heat dissipation fin 1 to the other end and dissipated to the surrounding environment through the small channels of the heat dissipation teeth.

[0045] Please refer to Figures 3 to 4 .

[0046] The utility model provides a kind of relay, including base 3, base 3 is provided with static yellow component, static yellow component includes static spring piece 2 and is arranged on the side of static spring piece 2 as above-mentioned heat dissipation device, shell 9 is covered on base 3, first through-hole 6 is opened on shell 9, to make heat dissipation fin 1 be located in first through-hole 6.

[0047] Specifically, since the above-mentioned heat dissipation device can effectively improve the heat dissipation effect of the heat dissipation device and can effectively improve the assembly efficiency, the relay installed with the improved heat dissipation device also has the above-mentioned functions, and here it is not repeated.

[0048] On the basis of any one of the above embodiments, referring to Figure 3 and Figure 4 , heat dissipation fin 1 is located on the side of static spring piece 2 away from static contact. Realize that connection section 11 and static contact are distributed at both ends of static spring piece 2, effectively improve heat dissipation effect.

[0049] Further, the connecting segment 11 is riveted with one side of the static reed 2. This connection mode ensures the stability and reliability between the heat dissipation device and the relay core components. Riveting is a mechanical connection method, which deforms the rivet by extruding the metal rivet, so as to tightly connect two or more metal components together. In the utility model, the riveting mode is adopted between the connecting segment 11 and the static reed 2, which can form a permanent connection, and the connection strength is usually higher than that of welding or other detachable connection modes. During the operation of the relay, the static reed 2 will be repeatedly affected by electromagnetic force and thermal stress transmitted from the heat dissipation device. The riveting connection can effectively resist the influence of these forces, ensure the stable connection between the heat dissipation device and the static reed 2, and prevent the decline of heat dissipation performance or electrical failure caused by loose connection. Moreover, the metal contact area at the riveting connection point is large, and the electrical conductivity is excellent. This is crucial for the relay, because the static reed 2 needs to maintain good electrical connection to ensure the on-off function of the circuit. Riveting connection can effectively reduce the contact resistance, reduce energy loss and improve the electrical performance of the relay.

[0050] On the basis of any one of the above embodiments, with reference to Figure 3 and Figure 4 The cover plate 4 is provided with a glue layer 5, and the surface of the glue layer 5 is flush with the surface of the shell 9.

[0051] Specifically, since the relay is usually used in large ships, offshore oil wells and large coastal inverters, the environment is relatively humid, and Cl ions and S ions can affect the internal structure of the relay, causing the relay to fail. Therefore, the relay needs to be sealed, and the additional glue layer 5 on the cover plate 4 can further improve the sealing performance of the relay and make it better work in the above special environment.

[0052] On the basis of any one of the above embodiments, with reference to Figure 3 and Figure 4 The shell 9 is provided with a second through hole 7, and the second through hole 7 is provided with an explosion-proof window 8, so that the second through hole 7 is divided into an upper groove and a lower groove, and the explosion-proof window 8 is formed with a notch at the edge of the lower groove.

[0053] Specifically, the second through hole 7 formed on the shell 9 and the explosion-proof window 8 arranged inside are a safety precaution for potential explosive gas or vapor environment in the design of the relay. When the device in the shell 9 is damaged and high-temperature gas is generated, the notch can make the explosion-proof window 8 quickly break or open along the notch, thereby releasing the internal pressure and avoiding explosion of the relay.

[0054] The various embodiments are described in the specification by way of progression, each building on the last to facilitate ease of understanding. The same or similar reference numerals are used in the drawings and description to refer to the same or like parts, components and operations throughout.

[0055] The above describes in detail the heat dissipation device for high-capacity relay and the relay. The principle and implementation mode of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified in several ways. These improvements and modifications also fall within the scope of the present application.

Claims

1. A heat dissipating device for a high capacity relay, characterized by comprising: The heat dissipation device comprises a plurality of heat dissipation fins (1) arranged in cooperation, and the installation directions of every two adjacent heat dissipation fins (1) are opposite. Each heat dissipation fin (1) comprises a connecting section (11) and a heat dissipation section (12), and a bending section (13) is arranged between the connecting section (11) and the heat dissipation section (12) so that the connecting section (11) and the heat dissipation section (12) are located on two parallel planes respectively. The connecting sections (11) of the plurality of heat dissipation fins (1) are mounted on the same side of a static spring sheet (2).

2. A heat sink for a high-capacity relay according to claim 1, wherein A displacement slot (14) is formed on each heat dissipation fin (1), and the displacement slot (14) is formed at the connecting section (11) and the bending section (13) so that the two connecting sections (11) of the two heat dissipation fins (1) arranged in cooperation are arranged in abutment and have the same width as the heat dissipation section (12).

3. The heat sink device for a high-capacity relay according to claim 1, wherein A displacement slot (14) is formed on each heat dissipation fin (1), and the displacement slot (14) is formed at the connecting section (11) and the bending section (13) so that the two connecting sections (11) of the two heat dissipation fins (1) arranged in cooperation are arranged on the same side and have a gap between the two connecting sections (11).

4. A heat sink for a high capacity relay according to any one of claims 1 to 3, wherein The heat dissipation section (12) comprises a plurality of heat dissipation teeth (15) distributed equidistantly on the side away from the connecting section (11).

5. A heat sink for a high-capacity relay according to claim 4, wherein Every two adjacent heat dissipation teeth (15) are connected to each other.

6. A relay comprising a base (3) in which a static yellow assembly is housed, characterised in that, The static yellow assembly comprises a static spring sheet (2) and the heat dissipation device as claimed in any one of claims 1-5 arranged on one side of the static spring sheet (2). An outer shell (9) is arranged on the base (3), and a first through hole (6) is formed in the outer shell (9) so that the heat dissipation fin (1) is located in the first through hole (6).

7. A relay according to claim 6, wherein The heat dissipation fin (1) is located on the side of the static spring sheet (2) away from the static contact.

8. A relay according to claim 6, wherein The connecting section (11) is riveted to one side of the static spring sheet (2).

9. A relay according to any one of claims 6 to 8, characterised in that, A cover plate (4) is arranged on the outer shell (9) at the first through hole (6), an adhesive layer (5) is encapsulated on the cover plate (4), and the surface of the adhesive layer (5) is flush with the surface of the outer shell (9).

10. A relay according to any one of claims 6-8, characterised in that A second through hole (7) is formed in the outer shell (9), and an explosion-proof window (8) is arranged in the second through hole (7) so that the second through hole (7) is divided into an upper groove and a lower groove, and the explosion-proof window (8) is formed with a notch at the edge of the lower groove.

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