A high-temperature resistant relay assembly

Abstract

This application discloses a high-temperature resistant relay assembly, belonging to the field of circuit accessory technology, for use in high-temperature (90℃-120℃) environments. The high-temperature resistant relay assembly includes: a solid-state relay, a sealed enclosure, a heat dissipation fan assembly, and a wire harness protective sleeve. The wire harness protective sleeve has a figure-eight shaped cross-section. In this application, the sealed enclosure houses the solid-state relay, isolating it from external heat. Furthermore, the figure-eight shaped wire harness protective sleeve not only allows for wire threading but also forms a channel for external airflow. When the heat dissipation fan assembly is working, it can expel the gas inside the sealed enclosure (dissipating the heat generated by the solid-state relay), ensuring the operational stability of the solid-state relay. Through the specific structural design of the wire harness protective sleeve, several metal sleeves are equidistantly arranged on the outside of the figure-eight channel, using these metal sleeves to maintain the shape stability of the figure-eight channel.

Description

Technical Field

[0001] This application relates to the field of circuit component technology, and in particular to a high-temperature resistant relay assembly. Background Technology

[0002] Relays, as important circuit control components, are widely used in industrial automation, power systems, transportation (such as new energy vehicles), aerospace, and other fields. Traditional electromagnetic relays rely on mechanical contacts to switch circuits on and off, which has inherent disadvantages such as large size, slow response speed, susceptibility to electric arcing, and limited lifespan due to mechanical wear. Solid-state relays, as an alternative, utilize semiconductor devices as switching elements and achieve electrical isolation between input and output through optocouplers or transformers. They offer significant advantages such as being contactless, spark-free, having fast switching speed, long lifespan, and strong resistance to vibration and shock, making them the preferred choice for many applications.

[0003] However, existing relay components have the following drawbacks: for example, when used in high-temperature environments, the heat generated by the relay itself during operation accumulates with the ambient heat, leading to unstable operation of the relay and even the risk of explosion. Utility Model Content

[0004] The purpose of this application is to provide a high-temperature resistant relay assembly that can be used in high-temperature environments (90℃-120℃).

[0005] To achieve the above objectives, this application provides a high-temperature resistant relay assembly, comprising: a solid-state relay, a sealing cover, a heat dissipation fan assembly, and a wire harness protective sleeve. The solid-state relay is fixedly installed inside the sealing cover, and the wire harness protective sleeve is fixedly connected to the side of the sealing cover. The cross-section of the wire harness protective sleeve is in the shape of an "8". The heat dissipation fan assembly is installed on the sealing cover and is used to force the gas inside the sealing cover to exit the sealing cover.

[0006] The sealed enclosure houses the solid-state relay, isolating it from external heat. The figure-eight shaped wire harness protective sleeve not only allows for wire threading but also forms a channel for external airflow. When the cooling fan assembly is working, it can expel the gas inside the sealed enclosure to dissipate the heat generated by the solid-state relay, ensuring the stable operation of the solid-state relay.

[0007] As a preferred embodiment, the sealing cover includes a base and an upper cover housing. The solid-state relay is fixedly installed on the top of the base. Generally, multiple solid-state relays share one sealing cover, that is, multiple solid-state relays are installed on the top of the base. The upper cover housing is sealed and glued to the top of the base. The glue used to connect the upper cover housing and the base should be a high-temperature resistant glue. A sealed cavity is formed between the upper cover housing and the base to accommodate the solid-state relay, thereby providing effective heat insulation protection for the solid-state relay.

[0008] Further preferably, the base includes a base plate, an ear-shaped opening, and a positioning frame. The ear-shaped opening is fixedly provided on the side of the base plate, and the positioning frame corresponding to the bottom contour of the upper cover shell is fixedly provided on the top of the base plate. The design of the ear-shaped opening facilitates the fixing of the base plate to other structures. The positioning frame is used to position the bottom of the upper cover shell and increases the contact surface for the upper cover shell and the positioning frame to bond, ensuring the connection is sealed.

[0009] Further preferably, the upper cover housing includes a cover body, a recess, a first peak, a second peak, and heat dissipation holes. The top middle section of the cover body has a recess, and the top of the cover body and the two sides of the recess form the first peak and the second peak, respectively. The side of the first peak facing the recess has a heat dissipation hole, and the cooling fan assembly is fixedly installed on the inner side of the first peak, with the air outlet of the cooling fan assembly facing the heat dissipation hole. The side of the second peak has a wire hole, and one end of the wire harness protective sleeve is fixedly connected to the wire hole.

[0010] By designing the shape and structure of the top of the cover so that the first peak and the second peak are connected from left to right, a cooling fan assembly is installed at the first peak, and a wire hole corresponding to the wire harness protective sleeve is designed at the second peak. When in use, the airflow entering from the outside passes through the first peak, the second peak and the lower side of the notch, which can effectively dissipate heat from multiple solid-state relays.

[0011] As another preferred embodiment, the cooling fan assembly includes: a channel housing, which is fixedly connected to the top of the first peak, a baffle channel is provided at one end of the channel housing near the heat dissipation hole, and a fan plate assembly is fixedly installed at the other end of the channel housing away from the heat dissipation hole. At least one cooling fan is provided on the fan plate assembly, which is used to provide forced convection power. By designing the baffle channel, external hot air can be prevented from entering the sealed cover when the cooling fan is not working.

[0012] As another preferred embodiment, a second plate is fixedly connected to the top inner side of the channel housing, and a first plate is fixedly connected to the bottom inner side of the channel housing. Multiple second plates and multiple first plates are provided, and the multiple second plates and multiple first plates are staggered. The multiple second plates and multiple first plates form a flow channel with the inner side of the channel housing.

[0013] As another preferred embodiment, the wire harness protective sleeve includes an "8"-shaped channel, one end of which is provided with a round tube segment. The round tube segment is fixedly connected to the wire hole, making the connection between the round tube segment and the wire hole more convenient, and the connection is smooth with a good sealing effect.

[0014] As another preferred embodiment, a number of metal sleeves are equidistantly arranged on the outer side of the figure-eight channel. The metal sleeves are in the shape of a figure-eight and are used to maintain the shape of the figure-eight channel.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] (1) By enclosing the solid-state relay inside the sealed cover, external heat can be isolated; and the wire harness protective sleeve with a cross-section of “8” shape can not only be used for wire pulling, but also form a channel for external airflow to enter. When the cooling fan assembly is working, it can exhaust the gas inside the sealed cover to dissipate the heat generated by the solid-state relay, thus ensuring the working stability of the solid-state relay.

[0017] (2) By designing the specific structure of the wire harness protective sleeve, several metal sleeves are set at equal intervals on the outside of the figure-eight channel. The metal sleeves are used to maintain the shape stability of the figure-eight channel and prevent the figure-eight channel from being squeezed and deformed by external force, which would cause blockage of the heat dissipation channel. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the high-temperature resistant relay assembly.

[0019] Figure 2 This is a three-dimensional structural diagram of the base of the high-temperature resistant relay assembly.

[0020] Figure 3 This is a three-dimensional structural diagram of the wire harness tube of the high-temperature resistant relay assembly.

[0021] Figure 4 This is a three-dimensional structural diagram of the blower assembly of the high-temperature resistant relay component.

[0022] Figure 5 This is a three-dimensional structural diagram of the air-blowing housing and the turbulence channel of the high-temperature resistant relay assembly.

[0023] Figure 6 This is a three-dimensional structural diagram of the upper cover housing of the high-temperature resistant relay assembly.

[0024] In the diagram: 1. Base; 101. Base plate; 102. Ear-shaped part; 103. Positioning frame; 2. Top cover housing; 201. Cover body; 202. Recess; 203. First peak; 204. Second peak; 205. Wire hole; 206. Heat dissipation hole; 3. Cooling fan assembly; 301. Channel housing; 302. Fan plate assembly; 3021. Cooling fan; 303. Airflow channel; 3031. First plate; 3032. Second plate; 4. Wiring harness protective sleeve; 401. Circular tube section; 402. Figure-eight shaped channel; 403. Metal sleeve; 5. Solid state relay. Detailed Implementation

[0025] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0027] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] like Figure 1-6The high-temperature resistant relay assembly shown includes a solid-state relay 5, a sealed housing, a cooling fan assembly 3, and a wiring harness protective sleeve 4. The solid-state relay 5 is fixedly installed inside the sealed housing, which encloses the solid-state relay 5 and isolates it from external heat. The wiring harness protective sleeve 4 is fixedly connected to the side of the sealed housing. The cross-section of the wiring harness protective sleeve 4 is in the shape of an "8". The length of the wiring harness protective sleeve 4 is 0.8m to 1.5m, and its end should extend into a non-high-temperature environment. The cooling fan assembly 3 is installed on the sealed housing to force the gas inside the sealed housing out of the sealed housing.

[0030] The wire harness protective sleeve 4, with an "8"-shaped cross-section, not only serves as a conduit for wiring but also forms a channel for external airflow. When the cooling fan assembly 3 is operating, it exhausts the gas inside the sealed enclosure to dissipate heat from the solid-state relay 5 (this part dissipates the heat generated by the solid-state relay 5 during operation), ensuring the operational stability of the solid-state relay 5. In actual use, the cooling fan assembly 3 operates, exhausting the gas inside the sealed enclosure and guiding external gas into the wire harness protective sleeve 4 to dissipate heat from the solid-state relay 5.

[0031] In one embodiment, the sealing cover includes a base 1 and an upper cover housing 2. The solid-state relay 5 is fixedly installed on the top of the base 1. Generally, multiple solid-state relays 5 share one sealing cover, that is, multiple solid-state relays 5 are installed on the top of the base 1. The upper cover housing 2 is sealed and glued to the top of the base 1. The glue used to connect the upper cover housing 2 and the base 1 should be a high-temperature resistant glue. A sealed cavity is formed between the upper cover housing 2 and the base 1.

[0032] The base 1 and the upper cover housing 2 should be made of heat-insulating materials to greatly reduce the heat radiation from the external environment from entering the interior of the sealed cover. A sealed chamber is formed between the upper cover housing 2 and the base 1 to accommodate the solid-state relay 5, thereby providing effective heat insulation protection for the solid-state relay 5.

[0033] In one embodiment, the base 1 includes a base plate 101, an ear-shaped opening 102, and a positioning frame 103. The ear-shaped opening 102 is fixedly disposed on the side of the base plate 101, and the positioning frame 103 corresponding to the bottom contour of the upper cover housing 2 is fixedly disposed on the top of the base plate 101. The design of the ear-shaped opening 102 facilitates the fixing of the base plate 101 to other structures. The positioning frame 103 is used to position the bottom of the upper cover housing 2 and increases the contact surface for the upper cover housing 2 and the positioning frame 103 to ensure the connection is sealed.

[0034] In one embodiment, the upper cover housing 2 includes a cover body 201, a notch 202, a first peak 203, a second peak 204, and a heat dissipation hole 206. The top middle section of the cover body 201 is provided with a notch 202. The top of the cover body 201 and the two sides of the notch 202 are respectively formed with the first peak 203 and the second peak 204. The side of the first peak 203 facing the notch 202 is provided with a heat dissipation hole 206. The cooling fan assembly 3 is fixedly installed inside the first peak 203, and the air outlet of the cooling fan assembly 3 faces the heat dissipation hole 206. The side of the second peak 204 is provided with a wire hole 205, and one end of the wire harness protective sleeve 4 is fixedly connected to the wire hole 205.

[0035] By designing the shape and structure of the top of the cover 201, the first peak 203 and the second peak 204 are connected from left to right. The cooling fan assembly 3 is installed at the first peak 203, and the wire hole 205 corresponding to the wire harness protective sleeve 4 is designed at the second peak 204. When in use, the airflow entering from the outside passes through the first peak 203, the second peak 204 and the lower side of the notch 202, which can fully dissipate heat from multiple solid-state relays 5.

[0036] In one embodiment, the cooling fan assembly 3 includes a channel housing 301, which is fixedly connected to the top of the first peak 203. A turbulence channel 303 is provided at one end of the channel housing 301 near the heat dissipation hole 206, and a fan plate assembly 302 is fixedly installed at the other end of the channel housing 301 away from the heat dissipation hole 206. At least one cooling fan 3021 is provided on the fan plate assembly 302, and the cooling fan 3021 is used to provide the power for forced convection. By designing the turbulence channel 303, when the cooling fan 3021 is not working, external hot air can be prevented from entering the sealed cover.

[0037] In one embodiment, a second plate 3032 is fixedly connected to the top inner side of the channel housing 301, and a first plate 3031 is fixedly connected to the bottom inner side of the channel housing 301. Multiple second plates 3032 and first plates 3031 are provided, and the multiple second plates 3032 and first plates 3031 are staggered. The multiple second plates 3032 and first plates 3031 form a flow channel 303 with the inner side of the channel housing 301.

[0038] In one embodiment, the wire harness protective sleeve 4 includes an "8"-shaped channel 402. One end of the "8"-shaped channel 402 is provided with a round tube segment 401, which is fixedly connected to the wire hole 205. The connection between the round tube segment 401 and the wire hole 205 is more convenient, and the connection is smooth with a good sealing effect. Under normal circumstances, a number of metal sleeves 403 are equidistantly arranged on the outer side of the "8"-shaped channel 402. The shape of the metal sleeves 403 is "8", and the metal sleeves 403 are used to maintain the shape of the "8"-shaped channel 402.

[0039] Working principle: During installation, the base 1 is pre-installed in the designed position, and then the solid-state relay 5 is installed on the base 1. The wire harnesses are threaded through the wire harness protective sleeve 4, with the wire harnesses occupying part of the wire harness protective sleeve 4, which has a cross-section shaped like an "8". The other part of the wire harness protective sleeve 4 forms an airflow channel. Then, the upper cover housing 2 is glued and fixed to the base 1. When the cooling fan assembly 3 is working, it forces the gas inside the sealed cover to the outside of the sealed cover, creating a negative pressure inside the sealed cover. This draws in external gas through the channel inside the wire harness protective sleeve 4 to dissipate heat from the solid-state relay 5.

[0040] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant relay assembly, characterized by, include: Solid-state relay (5); The solid-state relay (5) is fixedly installed on the inner side of the sealed cover, and a wire harness protective sleeve (4) is fixedly connected to the side of the sealed cover. The cross-section of the wire harness protective sleeve (4) is in the shape of an "8". A cooling fan assembly (3) is mounted on a sealing cover and is used to force the gas inside the sealing cover out of the sealing cover.

2. The high temperature resistant relay assembly of claim 1, wherein, The sealing cover includes: The solid-state relay (5) is fixedly mounted on the top of the base (1); The upper cover housing (2) is sealed and glued to the top of the base (1), and a sealed cavity is formed between the upper cover housing (2) and the base (1).

3. The high temperature resistant relay assembly of claim 2, wherein, The base (1) includes: The base plate (101) has an ear opening (102) fixedly installed on its side, and a positioning frame (103) fixedly installed on its top, which corresponds to the bottom outline of the upper cover shell (2).

4. The high temperature resistant relay assembly of claim 2, wherein, The upper cover housing (2) includes: The cover (201) has a notch (202) in the middle of its top section. The top of the cover (201) and the two sides of the notch (202) are respectively formed with a first peak (203) and a second peak (204). The first peak (203) has a heat dissipation hole (206) on its side facing the notch (202). The cooling fan assembly (3) is fixedly installed on the inner side of the first peak (203), and the air outlet of the cooling fan assembly (3) faces the heat dissipation hole (206). The second peak (204) has a wire hole (205) on its side, and one end of the wire harness protective sleeve (4) is fixedly connected to the wire hole (205).

5. The high temperature resistant relay assembly of claim 4, wherein, The cooling fan assembly (3) includes: The channel housing (301) is fixedly connected to the top of the first peak (203). A turbulence channel (303) is provided at one end of the channel housing (301) near the heat dissipation hole (206). A fan plate assembly (302) is fixedly installed at the other end of the channel housing (301) away from the heat dissipation hole (206). At least one set of cooling fans (3021) is provided on the fan plate assembly (302).

6. The high temperature resistant relay assembly of claim 5, wherein: A second plate (3032) is fixedly connected to the top inner side of the channel housing (301), and a first plate (3031) is fixedly connected to the bottom inner side of the channel housing (301). Multiple second plates (3032) and multiple first plates (3031) are provided. The multiple second plates (3032) and multiple first plates (3031) are staggered. The multiple second plates (3032) and multiple first plates (3031) form a flow channel (303) with the inner side of the channel housing (301).

7. The high temperature resistant relay assembly of claim 4, wherein, The wire harness protective sleeve (4) includes: The figure-eight shaped channel (402) has a circular tube segment (401) at one end, which is fixedly connected to the wire hole (205).

8. The high temperature resistant relay assembly of claim 7, wherein: Several metal frames (403) are equidistantly arranged on the outer side of the figure-eight channel (402), and the shape of the metal frames (403) is figure-eight.

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