Relay fixing structure and high-voltage control box

Abstract

A relay fixing structure and a high-voltage control box, the relay fixing structure comprises: an outer shell composed of an upper cover body and a lower shell, at least one cavity for accommodating a relay is arranged in the lower shell, the upper cover body is detachably fixed to the lower shell and covers the cavity; and an elastic pad, when the relay is accommodated in the cavity, the elastic pad is located between the relay and the upper cover body, and is extruded by the relay and the upper cover body to generate an elastic force for pressing the relay, so that the relay is crimped in the cavity by the upper cover body, the elastic pad and the lower shell. The utility model solves the problems of the prior art, such as complicated operation process, low fixing reliability and maintenance convenience of the relay fixing mode.

Description

Technical Field

[0001] This utility model belongs to the field of control electrical appliances, specifically relating to a relay fixing structure and a high-voltage control box. Background Technology

[0002] High-voltage control boxes are widely used in electric vehicles, high-voltage power systems, industrial automation equipment, and other fields to centrally control and manage the connection, disconnection, and fault protection of high-voltage circuits. The control box typically integrates multiple relays, fuses, current sensors, and other components, and interacts with external control signals through an internal circuit board to achieve functions such as switching control of high-voltage circuits, power management, and status monitoring.

[0003] As a core component in high-voltage control boxes used for controlling and switching circuits, the installation and fixing method of relays directly affects the reliability and maintenance efficiency of the equipment. Currently, relays are typically fixed in high-voltage control boxes using methods such as screwing and gluing.

[0004] However, this type of assembly process is relatively cumbersome. For example, screw connections require multiple steps such as pre-positioning, hole alignment, tightening, and inspection, resulting in a complex operation, low assembly efficiency, and high requirements for assembly precision. If positioning deviations or loose screws occur, it may lead to poor relay contact or detachment, affecting the stable operation of the equipment. Adhesive bonding methods, such as applying adhesive to the bottom or side of the relay and directly bonding it to the control box housing, also have drawbacks. For instance, the adhesive curing time is long, sometimes requiring separate curing equipment, which is not conducive to rapid assembly line operations. Furthermore, the bonding strength is limited by material surface treatment and environmental factors, and may age and detach over long-term use. In addition, disassembly is difficult during maintenance, affecting relay replacement and maintenance. Therefore, how to balance assembly simplicity, fixing reliability, and ease of later maintenance remains a significant technical challenge in control box design. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a relay fixing structure and a high-voltage control box, thereby solving the problems of cumbersome operation process, low fixing reliability and low maintenance convenience of the relay fixing method in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A relay fixing structure includes: An outer casing consisting of an upper cover and a lower housing, wherein the lower housing has at least one chamber for accommodating a relay, and the upper cover is detachably fixed to the lower housing and covers the chamber; and An elastic pad is located between the relay and the upper cover when the relay is housed in the cavity. The elastic pad is compressed by the relay and the upper cover to generate an elastic force, thereby pressing the relay into the cavity by the upper cover, the elastic pad, and the lower housing.

[0007] In one embodiment of this utility model, a support and guide structure is provided in the cavity, which is used to guide the installation of the relay to support and position the relay in a preset position in the cavity.

[0008] In one embodiment of this utility model, the support and guide structure consists of a plurality of support and guide protrusions disposed on the side wall of the chamber, and the plurality of support and guide protrusions define the preset position.

[0009] In one embodiment of this utility model, the bottom surface of the upper cover is provided with a positioning post, and the elastic pad is provided with a first positioning hole. The positioning post is inserted into the first positioning hole to restrict the movement of the elastic pad.

[0010] In one embodiment of this utility model, the upper cover is snapped and fixed to the lower shell.

[0011] In one embodiment of this utility model, the side wall of the lower housing is provided with multiple slots, and the upper cover is provided with multiple buckles corresponding to the multiple slots. The multiple buckles are respectively engaged in the multiple slots, thereby fixing the upper cover to the lower housing.

[0012] In one embodiment of this utility model, the elastic pad is an elastic heat dissipation pad, which is also used for heat dissipation of the relay.

[0013] To achieve the above objectives, the present invention also adopts the following technical solution: A high-voltage control box, comprising: The aforementioned relay fixing structure; and The relay housed in the chamber The elastic pad between the relay and the upper cover is compressed to generate an elastic force, thereby pressing the relay into the cavity.

[0014] In one embodiment of this utility model, the relay is a half-shell relay, with its contact portion covered by the upper shell and the coil portion exposed.

[0015] In one embodiment of this utility model, the half-shell relay is inverted in the chamber with the contact portion located on the side away from the upper cover and the coil portion located on the side close to the upper cover. The bottom surface of the upper cover is provided with a positioning post, the elastic pad is provided with a first positioning hole, the center hole of the coil portion is a second positioning hole, the positioning post passes through the first positioning hole and is inserted into the second positioning hole to restrict the movement of the elastic pad and position the relay; and / or the bottom of the lower housing is provided with a third positioning hole, and the contact of the contact portion is positioned in the third positioning hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The relay fixing structure of this utility model can fix the relay by pressing the elastic pad. Compared with the existing relay fixing method, the operation process is simple and the relay is pressed by the elastic force of the elastic pad, which can fix the relay more stably and has high reliability. 2. The upper cover and lower housing of the relay fixing structure of this utility model are fixed in a detachable manner, which can improve the convenience of relay maintenance; 3. The elastic pad of the relay fixing structure of this utility model can also be an elastic heat dissipation pad with thermal conductivity, which can further dissipate heat from the relay. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a high-voltage control box according to a specific embodiment of the present invention; Figure 2 This is an exploded view of a high-voltage control box according to a specific embodiment of the present invention; Figure 3 This is a structural diagram of the high-voltage control box when the upper cover and lower shell are separated. Figure 4 This is a cross-sectional view of a high-voltage control box according to a specific embodiment of the present invention; Figure 5 This is an exploded view of the relay and the elastic pad.

[0019] Explanation of reference numerals in the attached figures: 1. Outer shell; 11. Upper cover; 111. Positioning post; 112. Buckle; 12. Lower shell; 121. Chamber; 122. Slot; 2. Relay; 21. Upper housing; 22. Coil section; 23. Low-voltage port; 24. Copper busbar support; 25. Second positioning hole; 3. Elastic pad; 31. First positioning hole; 32. Relief groove; 4. High-voltage copper busbar; 5. Low-voltage copper busbar; 6. Connectors. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model.

[0021] In this utility model, unless otherwise stated, directional terms such as "up", "down", "left", "right", "front", and "back" generally refer to the up, down, left, and right directions in the actual use or working state of the device, specifically the directions shown in the accompanying drawings.

[0022] It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment in the following embodiments have their own emphasis; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0023] like Figures 1 to 5 The diagram illustrates a high-voltage control box according to a specific embodiment of the present invention, comprising: an outer shell 1 consisting of an upper cover 11 and a lower shell 12, and an elastic pad 3. The lower shell 12 contains at least one chamber 121 for accommodating a relay 2; in this embodiment, there are four chambers 121, but the embodiment is not limited to this, and there may be four or fewer chambers. The upper cover 11 is detachably fixed to the lower shell 12 and covers the chambers 121, specifically fixed to the upper opening of the lower shell 12. The elastic pad 3 is disposed between the relay 2 and the upper cover 11, and is deformed by compression to generate an elastic force (i.e., elastic restoring force). Under the action of this elastic force, the relay 2 is pressed downwards, and subsequently, the relay 2 is pressed into the chamber 121 by the upper cover 11, the elastic pad 3, and the lower shell 12. Thus, fixing the relay by pressing simplifies the installation process, and the elastic force of the elastic pad provides a more stable fixation of the relay.

[0024] Reference Figures 1 to 4In one specific embodiment, the high-voltage control box also has multiple high-voltage copper busbars 4 for connecting the high-voltage port of the relay 2 to an external high-voltage circuit. Specifically, the bottom of the chamber 121 has two through holes, and the relay 2 is invertedly disposed inside the chamber 121 with its high-voltage contact end facing the bottom of the chamber 121. Its high-voltage contacts protrude from the through holes into the outer casing 1 and are connected to the high-voltage copper busbars 4.

[0025] Furthermore, the high-voltage control box also has multiple low-voltage copper busbars 5. Some of the low-voltage copper busbars 5 are used to connect the low-voltage port 23 (the end point of the electromagnetic coil) of the relay to the external control circuit, while others are used to connect the high-voltage port of the relay to the external signal acquisition circuit to acquire the current signal of the high-voltage circuit. In one specific embodiment, some of the low-voltage copper busbars 5 are injection molded inside the upper cover 11. When the upper cover 11 is fixed to the lower housing 12, one end of this part of the low-voltage copper busbar 5 abuts against the low-voltage port 23 of the relay 2, and the other end extends out of one side of the upper cover 11 to form a connector 6, which is used to connect to the connection circuit of the control circuit. Another part of the low-voltage copper busbars 5 is also injection molded inside the upper cover 11, with one end extending out of the upper cover 11 and connecting to the high-voltage copper busbar 4 outside the housing 1. The other end also extends out of one side of the upper cover 11 to connect to the signal acquisition circuit. Thus, the connection between the copper busbars and the ports is also achieved by crimping, further simplifying the installation process of the high-voltage control box.

[0026] In one specific embodiment, although not shown, a support and guide structure is provided within the chamber 121. This structure guides the relay 2 to be installed into the chamber 121, supporting and positioning the relay 2 at a predetermined position within the chamber 121. This predetermined position may be, for example, the center of the chamber, but could also be another position. The support and guide structure may be, for example, a plurality of support and guide protrusions (not shown) provided on the sidewall of the chamber 121, defining the predetermined position. For example, the plurality of support and guide protrusions are respectively provided circumferentially on the sidewall of the chamber 121 and extend into the chamber 121, thereby defining the predetermined position for installing the relay 2. The plurality of support and guide protrusions can also serve as reinforcing ribs to improve the structural rigidity and strength of the high-voltage control box. Furthermore, the support and guide structure can also be a support protrusion at the opening of the chamber 121, which can reduce the weight of the high-voltage control box compared to protrusions. The support and guide structure can also be other structures, such as guide grooves, in which case corresponding guide sliders or guide ribs need to be provided on the relay.

[0027] Reference Figures 1 to 3In one specific embodiment, the upper cover 11 and the lower housing 12 are engaged and fixed by multiple snap-fits 112 and slots 122. Specifically, the upper side wall of the lower housing 12 is provided with multiple slots 122, and the upper cover 11 is provided with multiple snap-fits 112 corresponding to the multiple slots 122. The multiple snap-fits 112 are respectively engaged in the multiple slots 122, thereby engaging and fixing the upper cover 11 and the lower housing 12. When it is necessary to remove the upper cover 11 to maintain the relay, it can be disassembled simply by releasing the snap-fits 112 from the slots 122, which improves the convenience of relay maintenance.

[0028] In one specific embodiment, the elastic pad 3 is an elastic heat dissipation pad with high thermal conductivity, which can dissipate heat for the relay.

[0029] Reference Figure 2 , Figure 4 and Figure 5 In one specific embodiment, the relay 2 is a half-shell relay, with its contact portion covered by the upper shell 21 and the coil portion 22 exposed. The half-shell relay is inverted in the chamber 121 with the contact portion located on the side away from the upper cover and the coil portion 22 located on the side closer to the upper cover. The bottom surface of the upper cover is provided with a positioning post 111, the elastic pad 3 is provided with a first positioning hole 31, and the center hole of the coil portion 22 is a second positioning hole 25. The positioning post 111 passes through the first positioning hole 31 and is inserted into the second positioning hole 25 to restrict the movement of the elastic pad 3 and position the relay 2. Thus, the relay is further fixed by the positioning post of the upper cover, improving the stability of the fixation. In addition, the elastic pad is also restricted by the positioning post, which can prevent the elastic pad from shifting during the pressing process and affecting the pressing stability. Preferably, the bottom of the lower shell 12 may also be provided with a third positioning hole (not shown), and the contact portion of the contact portion is positioned in the third positioning hole.

[0030] In one specific embodiment, the low-voltage port 23 of the relay 2 is located at the bottom of the relay 2, and the bottom of the relay 2 is also provided with a copper busbar support 24 for fixing another part of the low-voltage copper busbar 5. The elastic pad 3 has relief grooves 32 on both sides that fit into the low-voltage port 23 and the copper busbar support 24.

[0031] Furthermore, the lower housing 12 can be a single, integral housing, or it can be assembled from multiple separate housings each having a chamber 121. The upper cover 11 can be a single, integral cover, or it can be assembled from multiple separate cover plates. This invention does not limit the specific form of the housing. For example, Figures 1 to 4 The four relays are covered and fixed by a single upper cover. This structure simplifies the installation process by fixing and guiding multiple relays.

[0032] In addition, although not shown in the figure, the high-voltage control box of this utility model may also contain other components such as fuses and current sensors.

[0033] The solution of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0034] Throughout this specification, the terms "an embodiment," "embodiment," or "specific embodiment" refer to a particular feature, structure, or characteristic described in connection with an embodiment that is included in at least one embodiment of this application, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of this application may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of this application.

[0035] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0036] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

Claims

1. A relay fixing structure characterized by comprising: include: An outer casing consisting of an upper cover and a lower housing, wherein the lower housing has at least one chamber for accommodating a relay, and the upper cover is detachably fixed to the lower housing and covers the chamber; and The elastic pad is located between the relay and the upper cover when the relay is housed in the cavity. It is squeezed by the relay and the upper cover to generate an elastic force that presses against the relay, thereby pressing the relay into the cavity by the upper cover, the elastic pad and the lower housing.

2. The relay fixing structure according to claim 1, characterized in that, The cavity is provided with a support and guide structure, which is used to guide the installation of the relay to support and position the relay in a preset position within the cavity.

3. The relay fixing structure according to claim 2, characterized in that, The support and guide structure consists of multiple support and guide protrusions provided on the side wall of the chamber, and the multiple support and guide protrusions define the preset position.

4. The relay fixing structure according to claim 1, characterized in that, The bottom surface of the upper cover is provided with a positioning post, and the elastic pad is provided with a first positioning hole. The positioning post is inserted into the first positioning hole to restrict the movement of the elastic pad.

5. The relay fixing structure according to claim 1, characterized in that, The upper cover is snapped and fixed to the lower shell.

6. The relay fixing structure according to claim 5, characterized in that, The side wall of the lower housing is provided with multiple slots, and the bottom surface of the upper cover is provided with multiple buckles corresponding to the multiple slots. The multiple buckles are respectively engaged in the multiple slots, thereby fixing the upper cover to the lower housing.

7. The relay fixing structure according to claim 1, characterized in that, The elastic pad is an elastic heat dissipation pad, and the elastic heat dissipation pad is also used for heat dissipation of the relay.

8. A high voltage control box characterized by, include: The relay fixing structure according to any one of claims 1 to 7; and The relay housed in the chamber The elastic pad between the relay and the upper cover is compressed to generate an elastic force, thereby pressing the relay into the cavity.

9. The high-voltage control box according to claim 8, characterized in that, The relay is a half-shell relay, with its contact portion covered by the upper shell and the coil portion exposed.

10. The high-voltage control box according to claim 9, characterized in that, The half-shell relay is inverted within the chamber, with the contact portion located on the side away from the upper cover and the coil portion located on the side closer to the upper cover. The bottom surface of the upper cover is provided with a positioning post, the elastic pad is provided with a first positioning hole, the center hole of the coil part is a second positioning hole, the positioning post passes through the first positioning hole and is inserted into the second positioning hole to restrict the movement of the elastic pad and position the relay; and / or the bottom of the lower housing is provided with a third positioning hole, and the contact of the contact part is positioned in the third positioning hole.

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