Electromagnetic relay with good heat dissipation performance
By extending the static spring of the electromagnetic relay to form a thermal connection with an external heat sink, the design addresses heat dissipation issues, ensuring efficient thermal management and improved reliability.
Patent Information
- Application Number
- CN202421969855.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The existing electromagnetic relays are unable to effectively dissipate heat due to the parts being wrapped in the shell, resulting in increased temperature rise and heating power consumption, affecting the reliability of the entire machine.
The heat dissipation connection part extends on the static spring of the relay body, and forms a thermally conductive connection with the heat dissipation member, combining the thermally conductive frame and the cooling plate, and dissipating heat by using the cooling system.
Effectively export the internal heat of the electromagnetic relay, improve the reliability of the entire machine, and do not affect the relay layout and the connection between the static spring and the load end.
Smart Images
Figure CN223108782U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of relays, in particular to an electromagnetic relay with good heat dissipation performance. Background Art
[0002] With the increasing current rating of electromagnetic relay products, the heat generated by the product contacts is getting larger and larger, resulting in an increase in the temperature rise of the product and an increasing heat dissipation power of the contacts. In actual applications, in order to solve the heat dissipation of the device, a cooling system (such as a liquid cooling system) is usually added to the whole machine at the application end to dissipate heat from the key components of the whole machine and improve the reliability of the whole machine. However, the components of the electromagnetic relay are wrapped by the housing and cannot transfer heat out well. Therefore, it is necessary to improve the electromagnetic relay. Content of the Utility Model
[0003] Therefore, the utility model provides an electromagnetic relay with good heat dissipation performance to solve the above problems.
[0004] To achieve the above object, the technical solution provided by the utility model is as follows:
[0005] An electromagnetic relay with good heat dissipation performance includes a relay body and a heat dissipation component; the relay body includes a housing and an electromagnetic part and a contact part arranged in the housing; wherein, the static contact of the contact part extends outside the housing to form a heat dissipation connection part, and the heat dissipation component is arranged outside the housing of the relay body and forms a heat conduction connection with the heat dissipation connection part of the static contact.
[0006] Further, the heat dissipation component includes a fixed connection part, and the fixed connection part is attached to the surface of the heat dissipation connection part of the static contact and forms a fixed connection.
[0007] Further, the heat dissipation component includes a laterally extending part, the laterally extending part is connected to the fixed connection part, and the laterally extending part is perpendicular or inclined to the heat dissipation connection part of the static contact.
[0008] Further, the heat dissipation component further includes a vertically extending part, and the vertically extending part is connected to the end of the laterally extending part (i.e., the end away from the fixed connection part) and extends towards the housing.
[0009] Further, the heat dissipation connection part is formed by extending the static contact away from the static contact lead-out foot of the static contact.
[0010] Further, the number of static contacts is multiple, and multiple static contacts all extend out of the housing, and the number of heat dissipation components is also multiple, and respectively form heat contact with the heat dissipation connection parts of the multiple static contacts.
[0011] Further, it further includes a heat conduction frame and a cooling plate, the heat conduction frame forms a heat conduction connection with the multiple heat dissipation components, and the cooling plate forms a heat conduction connection with the heat conduction frame.
[0012] Further, the heat-conducting frame covers a plurality of heat-dissipating components, and the cooling plate is attached to the surface of the heat-conducting frame.
[0013] Further, the cooling plate has a first flat surface, the heat-conducting frame has a second flat surface, and the first flat surface of the cooling plate is attached to the second flat surface of the heat-conducting frame.
[0014] Further, the heat-conducting frame and the plurality of heat-dissipating components are bonded to each other through heat-conducting glue.
[0015] Further, the heat-conducting frame is an aluminum frame.
[0016] Further, the cooling plate is a liquid cooling plate.
[0017] Further, the housing includes a base and a cover shell connected to each other, and the heat-dissipating connection part of the static contact spring extends out of the cover shell; the static contact spring further includes a static contact spring lead-out leg, and the static contact spring lead-out leg extends out of the base.
[0018] Through the technical solution provided by the present utility model, the following beneficial effects are achieved:
[0019] 1. The contact part is used to connect the load, and the current is large, which is the main heat source of the electromagnetic relay. In this solution, the static contact spring of the contact part is extended outside the housing to form a heat-dissipating connection part, and a heat-conducting connection is formed with the heat-dissipating component; the heat inside the electromagnetic relay can be well led out, realizing effective heat conduction and heat dissipation.
[0020] 2. The method of connecting the heat-dissipating connection part of the static contact spring to the external heat-dissipating component can effectively maintain the simple structure of the static contact spring, facilitating assembly; and the heat-dissipating component can be designed in terms of structure and material selected according to the actual situation, with more flexible application.
[0021] 3. Extending the static contact spring to the housing not only increases the heat-dissipating area of the static contact spring body but also enables the static contact spring to form a heat-conducting connection with the external heat-dissipating component, making full use of the cooling system to dissipate heat from the key components of the whole machine, thereby improving the reliability of the whole machine.
[0022] 4. The structural design of this solution does not affect the overall layout of the relay and does not affect the connection between the static contact spring and the external load terminal. Description of the Drawings
[0023] Figure 1 Shown is a partial structural schematic diagram of an electromagnetic relay with good heat dissipation in the embodiment;
[0024] Figure 2 Shown is Figure 1 a cross-sectional view taken along line A-A in
[0025] Figure 3 Shown isFigure 1 Exploded view of the structure shown
[0026] Figure 4 The figure shows a schematic structural diagram of an electromagnetic relay with good heat dissipation in the embodiment. Detailed implementation manners
[0027] To further illustrate each embodiment, the present utility model provides accompanying drawings. These drawings are a part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0028] In the description of the present invention, the orientation or positional relationships such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings, only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0029] Now, the present utility model will be further described in conjunction with the accompanying drawings and specific implementation manners.
[0030] Referring to Figures 1 to 4 As shown, an electromagnetic relay with good heat dissipation provided in this embodiment includes a relay body 10; specifically, the relay body 10 includes a housing 11 and an electromagnetic part 12 and a contact part 13 arranged inside the housing 11; the contact part 13 includes a static contact 14 and a moving contact 15, and the electromagnetic part 12 drives the moving contact 15 of the contact part 13 to perform opening and closing actions; the above is the prior art and will not be further described in detail.
[0031] The static contact 14 of the contact part 13 extends outside the housing 11 to form a heat dissipation connection part 141. Specifically, in this embodiment, the housing 11 includes a connected base 112 and a cover 111, and the electromagnetic part 12 and the contact part 13 are arranged in the cavity formed by the base 112 and the cover 111; the contact part 13 has two static contacts 14, and the two static contacts 14 are arranged side by side, as Figure 1 and Figure 2 shown, one end (the lower end in this embodiment) of the two static contacts 14 extends out of the base 112 to form a static contact lead-out leg 142; the static contact lead-out leg 142 is used to connect to an external circuit; the other end (the upper end in this embodiment) of the two static contacts 14 extends out of the cover 111 to form the heat dissipation connection part 141.
[0032] It further includes a heat dissipation member 20, which is arranged outside the housing 11 of the relay body 10 and forms a heat conduction connection with the heat dissipation connection portion 141 of the static contact 14. Specifically, there are also two heat dissipation members 20, which respectively form heat conduction connections with the heat dissipation connection portions 141 of the two static contacts 14.
[0033] The contact portion 13 is used to connect the load, and the current is large, which is the main heat source of the electromagnetic relay. In this solution, the static contact 14 of the contact portion 13 is extended outside the housing 11 to form a heat dissipation connection portion 141, and a heat conduction connection is formed with the heat dissipation member 20; it can well lead out the heat inside the electromagnetic relay to the outside, realizing effective heat conduction and heat dissipation.
[0034] At the same time, as a fixed component, the static contact 14 leads out the heat dissipation connection portion 141 for external heat conduction, which will not affect the operation of the relay body 10. And the method of connecting the external heat dissipation member 20 to the heat dissipation connection portion 141 of the static contact 14 can effectively maintain the simple structure of the static contact 14 and is convenient for assembly; for example, in this embodiment, the static contact 14 is an overall vertical plate-like structure, which is convenient for assembly. And the heat dissipation member 20 can be designed in terms of structure and material selected according to the actual situation, and is more flexible to use.
[0035] Extending the static contact 14 to the housing not only increases the heat dissipation area of the static contact body, but also enables the static contact 14 to form a heat conduction connection with the external heat dissipation member 20, making full use of the cooling system to dissipate heat from the key components of the whole machine, so as to improve the reliability of the whole machine.
[0036] The structural design of this solution does not affect the overall layout of the relay and the connection between the static contact and the external load terminal.
[0037] In this embodiment, the heat conduction connection method between the heat dissipation connection portion 141 of the static contact 14 and the heat dissipation member 20 is direct contact and fixed connection. Specifically, as Figure 2 and Figure 3 shown, the heat dissipation connection portion 141 of the static contact 14 extends upward. The heat dissipation member 20 includes a fixed connection portion 21, and the fixed connection portion 21 fits on the surface (specifically, the side surface) of the heat dissipation connection portion 141 of the static contact 14 and forms a fixed connection through riveting with a rivet 30; in this way, there is a good heat conduction effect between the heat dissipation connection portion 141 of the static contact 14 and the heat dissipation member 20; the heat can be well conducted to the heat dissipation member 20.
[0038] Further, the heat dissipation member 20 is a plate-like structure, including a horizontally extending portion 22, a vertically extending portion 23 and the above-mentioned fixed connection portion 21; as Figure 2As shown, the vertical extension part 23 and the fixed connection part 21 are respectively connected to the left and right ends of the horizontal extension part 22 and extend downward to form an "ㄇ" - shaped structure. That is, the vertical extension part 23 is connected to one end of the horizontal extension part 22 away from the fixed connection part 21 and extends towards the housing 11. The horizontal extension part 22 is perpendicular to the heat - dissipation connection part 141 of the static spring 14 and is located in the upper - space of the cover housing 111; the vertical extension part 23 extends towards the cover housing 111 (downward).
[0039] The above - mentioned structure of the heat - dissipation part 20 is one of the more preferred solutions in this embodiment. Of course, in other embodiments, it is not limited to this. For example, the heat - conduction connection method between the heat - dissipation connection part 141 of the static spring 14 and the heat - dissipation part 20 is to be adhesively fixed by thermal conductive glue. The heat - dissipation part 20 can be other structures such as a tree - branch - like structure with multiple branches or directly adopt a structure with heat - dissipation fins; the horizontal extension part 22 is arranged obliquely to the heat - dissipation connection part 141 of the static spring 14, etc.
[0040] In order to conduct heat and dissipate heat for two static springs 14 simultaneously, in this embodiment, a heat - conduction frame 40 and a cooling plate 50 are further included. The heat - conduction frame 40 forms a heat - conduction connection with two heat - dissipation parts 20, and the cooling plate 50 forms a heat - conduction connection with the heat - conduction frame 40. In this way, the heat of the two heat - dissipation parts 20 can be concentratedly conducted to the heat - conduction frame 40 and heat exchange is carried out through the cooling plate 50 to achieve heat dissipation.
[0041] Specifically, in this embodiment, the cooling plate 50 is a liquid - cooling plate for connecting to an external liquid - cooling system.
[0042] The heat - conduction frame 40 covers two heat - dissipation parts 20, and the cooling plate 50 is attached to the surface of the heat - conduction frame 40. Specifically, the heat - conduction frame 40 is similar to a cover - body structure, having a flat plate 41 and side plates 42 connected to the periphery of the flat plate 41. The flat plate 41 is attached to the horizontal extension part 22 of the heat - dissipation part 20. The heat - conduction frame 40 is an aluminum frame; the heat - dissipation connection part 141 of the static spring 14 and the heat - dissipation part 20 are both adhesively fixed by thermal conductive glue 42; it not only plays a role in fixed connection but also plays a role in insulation and heat conduction. In addition, when the aluminum frame has sufficient insulation settings, the heat - dissipation part 20 (or the heat - dissipation connection part 141) can be directly attached to the heat - conduction frame 40; at the same time, in order to avoid electrical conduction between the heat - conduction frame 40 and the heat - dissipation part 20 or the heat - dissipation connection part 141 after the insulation performance of the heat - conduction frame 40 is reduced, generally, the heat - conduction frame 40 and the heat - dissipation part 20 (or the heat - dissipation connection part 141) are not directly attached flatly. Thermal conductive glue 42 can be filled, or a conductive - insulating but heat - conductive material part can be set between the heat - conduction frame 40 and the heat - dissipation part 20 as a transition part, which not only realizes the insulation requirement but also ensures the heat - conduction efficiency.
[0043] The cooling plate 50 has a first flat surface, i.e., the lower surface of the cooling plate 50, and the heat conducting frame 40 has a second flat surface, i.e., the upper surface of the flat plate 41 of the heat conducting frame 40. The first flat surface of the cooling plate 50 is attached to the second flat surface of the heat conducting frame 40. By using the attachment method of plane to plane, the contact will be better, thus ensuring the heat conduction effect.
[0044] Furthermore, the heat conducting frame 40 is an aluminum frame. The heat conducting frame 40 made of aluminum has the advantages of light weight, high heat conduction efficiency and low cost. The cooling plate 50 is a liquid cooling plate, which is used to cooperate with the liquid cooling system subsequently.
[0045] Certainly, in other embodiments, the structure of the heat conducting frame 40 and its cooperation structure with the cooling plate 50 are not limited to this. For example, the heat conducting frame 40 can have a structure with only one flat plate 41. The cooling plate 50 and the heat conducting frame 40 can also be attached by the fitting of arc surface to arc surface, or by adding heat conducting glue between them for fitting and fixing, etc. Or, when there is only one static reed 14, the heat dissipating member 20 can also be directly a liquid cooling plate, and so on.
[0046] Although the present invention is specifically shown and described in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them fall within the protection scope of the present invention.
Claims
1. An electromagnetic relay with good heat dissipation, comprising a relay body; the relay body includes a housing and an electromagnetic part and a contact part arranged in the housing; characterized in that: The static spring of the contact part extends outside the housing to form a heat dissipation connection part, and further includes a heat dissipation component. The heat dissipation component is arranged outside the housing of the relay body and forms a heat conduction connection with the heat dissipation connection part of the static spring.
2. The electromagnetic relay with good heat dissipation according to claim 1, characterized in that: The heat dissipation component includes a fixed connection part, and the fixed connection part fits on the surface of the heat dissipation connection part of the static spring and forms a fixed connection.
3. The electromagnetic relay with good heat dissipation according to claim 2, characterized in that: The heat dissipation component includes a lateral extension part, and the lateral extension part connects the fixed connection part. The lateral extension part is perpendicular or inclined to the heat dissipation connection part of the static spring.
4. The electromagnetic relay with good heat dissipation according to claim 3, characterized in that: The heat dissipation component further includes a vertical extension part, and the vertical extension part is connected to one end of the lateral extension part away from the fixed connection part and extends towards the housing.
5. The electromagnetic relay with good heat dissipation according to claim 1, characterized in that: The heat dissipation connection part is formed by the static spring extending outward from one end away from the static spring lead-out foot of the static spring.
6. The electromagnetic relay with good heat dissipation according to any one of claims 1 to 5, characterized in that: The number of the static springs is multiple, and multiple static springs all extend out of the housing. The number of the heat dissipation components is also multiple, and they respectively form heat contact with the heat dissipation connection parts of the multiple static springs.
7. The electromagnetic relay with good heat dissipation according to claim 6, characterized in that: It further includes a heat conduction frame and a cooling plate. The heat conduction frame forms a heat conduction connection with the multiple heat dissipation components, and the cooling plate forms a heat conduction connection with the heat conduction frame.
8. The electromagnetic relay with good heat dissipation according to claim 7, wherein: The heat conduction frame covers the multiple heat dissipation components, and the cooling plate fits on the surface of the heat conduction frame.
9. The electromagnetic relay with good heat dissipation according to claim 8, characterized in that: The cooling plate has a first flat surface, the heat conduction frame has a second flat surface, and the first flat surface of the cooling plate fits onto the second flat surface of the heat conduction frame.
10. The electromagnetic relay with good heat dissipation according to claim 8, characterized in that: The heat conduction frame and the multiple heat dissipation components are bonded with each other through heat-conducting glue.
11. The electromagnetic relay with good heat dissipation according to claim 8, characterized in that: The heat conduction frame is an aluminum frame.
12. The electromagnetic relay with good heat dissipation according to claim 8, wherein: The cooling plate is a liquid cooling plate.
13. The electromagnetic relay with good heat dissipation according to claim 1, wherein: The housing includes a connected base and a cover shell. The heat dissipation connection part of the static spring extends out of the cover shell; the static spring further includes a static spring lead-out foot, and the static spring lead-out foot extends out of the base.