A shock-absorbing pad applied to a high-voltage distribution box and a high-voltage distribution box

Abstract

This application discloses a shock-absorbing pad and a high-voltage distribution box, belonging to the technical field of high-voltage distribution boxes. It includes a body and a protrusion. The body has a through hole for a connecting device to pass through. The protrusion is connected to the body, and protrusions are provided on both sides of the body along the extension direction of the mounting hole to abut and support the target equipment. The protrusion has a spherical groove with its opening facing the side of the protrusion away from the body. When the shock-absorbing pad is compressed, the opening of the spherical groove extends outward under the pressure, increasing the contact area between the inner wall of the spherical groove and the target equipment. The contact surface gradually transforms into a negative pressure adsorption state, improving the connection stability between the shock-absorbing pad and the target component. Simultaneously, it distributes more vibration to the connecting component, further reducing the vibration transmission of the connecting component and reducing the impact of vibration on the connection and contact performance between electrical control devices in the high-voltage distribution box, as well as the tightness of the connecting component.

Description

Technical Field

[0001] This application belongs to the field of high voltage distribution box technology, specifically relating to a shock-absorbing pad and a high voltage distribution box. Background Technology

[0002] In a vehicle's battery module, high-voltage power distribution equipment such as BDU (Battery Disconnect Unit), PDU (Power Distribution Unit), and BMU (Battery Management Unit) are typically required to manage the power distribution of the battery.

[0003] Due to the fixed location requirements of high-voltage distribution boxes, high-voltage power distribution equipment is usually installed on vehicles with bolts to form a rigid connection. However, under the rigid connection of bolts, the vibration generated by the movement of the vehicle will be transmitted to the high-voltage distribution box through the bolts, which cannot meet the vibration requirements of the high-voltage distribution box operation. In fact, under long-term vibration transmission, it will affect the connection and contact performance between the electrical control devices in the high-voltage distribution box, as well as the tightness of the bolts, thus affecting the normal operation of the high-voltage power distribution equipment. Utility Model Content

[0004] Purpose of the utility model: This application develops a shock-absorbing pad and a high-voltage distribution box for use in high-voltage distribution boxes, aiming to solve the technical problem in the prior art where excessive vehicle vibration is transmitted to the high-voltage distribution box, affecting the normal operation of the high-voltage distribution box.

[0005] Technical solution: In a first aspect, this application provides a shock-absorbing pad for use in a high-voltage distribution box, comprising:

[0006] The body has a mounting hole, which is a through hole;

[0007] The protrusion is connected to the body. Along the extension direction of the mounting hole, the protrusion is provided on both sides of the body. The protrusion has a spherical groove, the opening of which faces the side of the protrusion away from the body. Along the extension direction of the mounting hole, the maximum depth of the spherical groove is a, and the radius of the spherical groove is b, satisfying: a≤b.

[0008] In some embodiments, the protrusion has a minimum length c along the extending direction of the mounting hole, satisfying: a ≤ .

[0009] In some embodiments, the protrusion is cylindrical, and the axis of the protrusion is parallel to the line extending from the mounting hole.

[0010] In some embodiments, the body further has a clearance groove disposed on the outer wall of the body;

[0011] The clearance groove is an annular groove that runs from end to end, and the axis of the clearance groove coincides with the straight line extending from the mounting hole.

[0012] In some embodiments, the body further has a groove, the groove communicating with the mounting hole through the bottom of the groove;

[0013] Along the extension direction of the mounting hole, grooves are provided on both sides of the body, and the openings of the grooves on both sides of the body are arranged opposite to each other.

[0014] In some embodiments, a plurality of protrusions are provided on both sides of the body along the extension direction of the mounting hole, and the plurality of protrusions on any one side are circumferentially spaced around the straight line along the extension direction of the mounting hole.

[0015] In some embodiments, the maximum depth 'a' of the spherical groove and the radius 'b' of the spherical groove satisfy the following: b≤a≤b.

[0016] In some embodiments, the maximum depth 'a' of the spherical groove and the radius 'b' of the spherical groove satisfy the following: b≤a≤b.

[0017] In some embodiments, the maximum depth 'a' of the spherical groove and the radius 'b' of the spherical groove satisfy the following: b≤a≤b.

[0018] Secondly, embodiments of this application also provide a high-voltage distribution box, including a shock-absorbing pad applied to the high-voltage distribution box as described in any one of the first aspects, and:

[0019] The housing has a connecting platform on its outer wall, and the connecting platform has a snap-fit ​​hole;

[0020] A sleeve, the sleeve including a cylindrical body and a baffle, the baffle being disposed on the outer wall of the sleeve and at one end of the sleeve in the extending direction;

[0021] The cylindrical body passes through the mounting hole, the baffle abuts against the protrusion, and the shock-absorbing pad is disposed in the snap-fit ​​hole; the connecting platform has a mounting cut extending from the side toward the snap-fit ​​hole, the mounting cut penetrating the connecting platform along the extending direction of the snap-fit ​​hole and communicating with the snap-fit ​​hole.

[0022] Beneficial Effects: Compared with the prior art, the vibration damping pad for a high-voltage distribution box provided in this application includes a body and a protrusion. The body has a mounting hole, which is a through hole for a connecting device to pass through. The protrusion is connected to the body. Along the extension direction of the mounting hole, protrusions are provided on both sides of the body for abutting and supporting the target equipment. The protrusion has a spherical groove. The opening of the spherical groove faces the side of the protrusion away from the body. When the vibration damping pad is compressed, the opening of the spherical groove extends outward under the action of the extrusion force, increasing the contact area between the inner wall of the spherical groove and the target equipment. The contact surface gradually transforms into a negative pressure adsorption state, improving the connection stability between the vibration damping pad and the target component. At the same time, it distributes more vibration to the connector, further reducing the vibration transmission of the connector and reducing the impact of vibration on the connection and contact performance between electrical control devices in the high-voltage distribution box, as well as the tightness of the connector. Along the extension direction of the mounting hole, the maximum depth of the spherical groove is less than or equal to the radius of the spherical groove to avoid the problem of the edge of the spherical groove sinking under pressure when the depth is too large, which causes the opening of the spherical groove to become smaller. Attached Figure Description

[0023] 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.

[0024] Figure 1 A perspective view of a shock-absorbing pad applied to a high-voltage distribution box, provided in an embodiment of this application;

[0025] Figure 2 A cross-sectional view of a shock-absorbing pad applied to a high-voltage distribution box, provided in an embodiment of this application;

[0026] Figure 3 A partial perspective view of a high-voltage distribution box provided for an embodiment of this application (showing a portion of the housing including the connecting platform, shock-absorbing pads, and sleeves).

[0027] Figure 4 A partial perspective view of the housing of a high-voltage distribution box, including a connecting platform, provided for an embodiment of this application;

[0028] Figure 5 A perspective view of the sleeve in the high-voltage distribution box provided in an embodiment of this application;

[0029] Reference numerals: 10, body; 11, mounting hole; 12, clearance groove; 13, groove; 20, protrusion; 21, spherical groove; 40, shell; 41, connecting platform; 411, snap-fit ​​hole; 412, mounting notch; 50, sleeve; 51, cylinder; 52, stop. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] In a vehicle's battery module, high-voltage power distribution equipment such as BDU (Battery Disconnect Unit), PDU (Power Distribution Unit), and BMU (Battery Management Unit) are typically required to manage the power distribution of the battery.

[0032] Due to the fixed location requirements of high-voltage distribution boxes, high-voltage power distribution equipment is usually installed on vehicles with bolts to form a rigid connection. However, under the rigid connection of bolts, the vibration generated by the movement of the vehicle will be transmitted to the high-voltage distribution box through the bolts, which cannot meet the vibration requirements of the high-voltage distribution box operation. In fact, under long-term vibration transmission, it will affect the connection and contact performance between the electrical control devices in the high-voltage distribution box, as well as the tightness of the bolts, thus affecting the normal operation of the high-voltage power distribution equipment.

[0033] In view of this, embodiments of this application provide a shock-absorbing pad for a high-voltage distribution box, including a body 10 and a protrusion 20. The body 10 has a mounting hole 11, which is a through hole for a connecting device to pass through. The protrusion 20 is connected to the body 10, and protrusions 20 are provided on both sides of the body 10 along the extending direction of the mounting hole 11 for abutting and supporting target equipment. The protrusion 20 has a spherical groove 21, the opening of which faces the side of the protrusion 20 away from the body 10. When the shock-absorbing pad is compressed, the opening of the spherical groove 21 extends outward under the action of the compressive force. The contact area between the inner wall of 21 and the target device is increased, and the contact surface gradually transforms into a negative pressure adsorption state, which improves the connection stability between the shock-absorbing pad and the target component. At the same time, it distributes more vibration to the connector, further reduces the vibration transmission of the connector, and reduces the impact of vibration on the connection and contact performance between electrical control devices in the high-voltage distribution box, as well as the tightness of the connector. Along the extension direction of the mounting hole 11, the maximum depth of the spherical groove 21 is less than or equal to the radius of the spherical groove 21, so as to avoid the problem of the edge of the spherical groove 21 sinking in when under pressure due to the smaller opening of the spherical groove 21 when the depth is too large.

[0034] In some embodiments, the body 10 of the shock-absorbing pad in this application is integrally molded from rubber material, and an installation hole 11 is provided on the body 10. The installation hole 11 is a cylindrical through hole for the cylindrical sleeve 50 and bolt to pass through.

[0035] In some embodiments, the shock-absorbing pad of this application further includes a protrusion 20, which is connected to the body 10. The protrusion 20 and the body 10 are made of the same material, namely rubber, and the protrusion 20 and the body 10 are integrally formed. Further, along the extending direction of the mounting hole 11, protrusions 20 are provided on both sides of the body 10 so that both ends of the shock-absorbing pad are connected to the baffle 52 of the sleeve 50 and the vehicle body respectively through the protrusions 20. Further, along the extending direction of the mounting hole 11, the shock-absorbing pad of this application has multiple protrusions 20 on both sides of the body 10, and the multiple protrusions 20 on any one side are circumferentially spaced around the straight line of the extending direction of the mounting hole 11; specifically, the multiple protrusions 20 on any one side are evenly distributed circumferentially around the straight line of the extending direction of the mounting hole 11, and the number of protrusions 20 can be 3, 4, 5, 6, 7, 8, etc. In this application, the number of protrusions 20 is preferably 8.

[0036] In some embodiments, the protrusion 20 of the shock-absorbing pad in this application has a spherical groove 21. The opening of the spherical groove 21 faces the side of the protrusion 20 away from the body 10, that is, towards the surface of the baffle 52 of the sleeve 50 or the contact surface of the vehicle body. So that when the shock-absorbing pad is compressed, the opening of the spherical groove 21 extends outward under the action of the extrusion force, the contact area between the inner wall of the spherical groove 21 and the target device increases, and the contact surface gradually transforms into a negative pressure adsorption state, which improves the connection stability between the shock-absorbing pad and the target component, and at the same time distributes more vibration to the connector, further reduces the vibration transmission of the connector, and reduces the impact of vibration on the connection and contact performance between the electrical control devices in the high-voltage distribution box, as well as the tightness of the connector.

[0037] In some embodiments, along the extension direction of the mounting hole 11, the maximum depth of the spherical groove 21 is a, and the radius of the spherical groove 21 is b, satisfying: a≤b, so that the cross-sectional area at the opening of the groove 13 is maximized along the force direction of the damping pad, so that the groove 13 elastically expands outward when the damping pad is under force, avoiding the inward concavity at the opening of the groove 13.

[0038] In some embodiments, the maximum depth a of the spherical groove 21 and the radius b of the spherical groove 21 satisfy: b=a、 b=a、 b = any value in a, or any value within the range formed by any value and b, for example: b≤a≤b、 b≤a≤b、 b≤a≤b.

[0039] In some embodiments, along the extending direction of the mounting hole 11, the protrusion 20 has a minimum length c, satisfying: a ≤ c, to avoid the groove 13 being too deep, which would affect the strength of the protrusion 20.

[0040] In some embodiments, the protrusion 20 in this application is cylindrical, and the axis of the protrusion 20 is parallel to the straight line of the extension direction of the mounting hole 11. Further, the shape of the protrusion 20 in its extension direction section can also be quadrilateral, pentagon, hexagon, etc., which can be selected according to engineering practice.

[0041] In some embodiments, the body 10 of this application further includes a clearance groove 12, which is disposed on the outer wall of the body 10 for clearance and engagement when the shock-absorbing pad is connected to the high-voltage distribution box housing 40. Further, the clearance groove 12 is an annular groove extending from end to end, and the axis of the clearance groove 12 coincides with the straight line extending from the mounting hole 11. This application sets the clearance groove 12 as an annular shape, allowing the shock-absorbing pad to be engaged with the high-voltage distribution box housing 40 at every angle around its extension direction, eliminating the need to find the corresponding engagement angle and effectively improving the connection and loading efficiency between the shock-absorbing pad and the high-voltage distribution box housing.

[0042] In some embodiments, the body 10 of this application also has a groove 13. The groove 13 communicates with the mounting hole 11 through the bottom of the groove. Along the extension direction of the mounting hole 11, grooves 13 are provided on both sides of the body 10, and the openings of the grooves 13 on both sides of the body 10 are arranged opposite to each other. The groove 13 can reduce the contact area between the outer wall of the sleeve 50 and the inner wall of the mounting hole 11, reduce the installation resistance between the sleeve 50 and the mounting hole 11 caused by friction, and at the same time, the grooves 13 on both sides of the body 10 can reduce the wall thickness at both ends of the shock absorber, and improve the elastic shock absorption performance at both ends of the elastic shock absorber.

[0043] Understandably, the shock-absorbing pad for a high-voltage distribution box provided in this application embodiment includes a body 10 and a protrusion 20. The body 10 has a mounting hole 11, which is a through hole for a connecting device to pass through. The protrusion 20 is connected to the body 10. Along the extension direction of the mounting hole 11, protrusions 20 are provided on both sides of the body 10 for abutting and supporting the target equipment. The protrusion 20 has a spherical groove 21. The opening of the spherical groove 21 faces the side of the protrusion 20 away from the body 10. When the shock-absorbing pad is compressed, the opening of the spherical groove 21 extends outward under the action of the extrusion force. The contact area between the inner wall of 21 and the target device is increased, and the contact surface gradually transforms into a negative pressure adsorption state, which improves the connection stability between the shock-absorbing pad and the target component. At the same time, it distributes more vibration to the connector, further reduces the vibration transmission of the connector, and reduces the impact of vibration on the connection and contact performance between electrical control devices in the high-voltage distribution box, as well as the tightness of the connector. Along the extension direction of the mounting hole 11, the maximum depth of the spherical groove 21 is less than or equal to the radius of the spherical groove 21, so as to avoid the problem of the edge of the spherical groove 21 sinking in when under pressure due to the smaller opening of the spherical groove 21 when the depth is too large.

[0044] Accordingly, embodiments of this application also provide a high-voltage distribution box; please refer to [link / reference]. Figure 3 , Figure 4 and Figure 5 , Figure 3 A partial perspective view of a high-voltage distribution box provided for an embodiment of this application (showing a portion of the housing 40 including the connecting platform 41, the shock-absorbing pad, and the sleeve 50). Figure 4 This is a partial perspective view of the housing 40 of the high-voltage distribution box, including the connecting platform 41, provided in an embodiment of this application. Figure 5 A perspective view of the sleeve 50 in the high-voltage distribution box provided in the embodiments of this application; including the shock-absorbing pad applied to the high-voltage distribution box provided in the embodiments of this application, and:

[0045] The housing 40 has a connecting platform 41 on its outer wall, and the connecting platform 41 has a snap-fit ​​hole 411.

[0046] Sleeve 50 includes a cylinder 51 and a stop 52. The stop 52 is disposed on the outer wall of sleeve 50 and at one end of sleeve 50 in the extending direction.

[0047] The cylinder 51 passes through the mounting hole 11, the baffle 52 abuts against the protrusion 20, and the shock-absorbing pad is disposed in the snap-fit ​​hole 411; the connecting platform 41 has a mounting cut 412 extending from the side toward the snap-fit ​​hole 411, the mounting cut 412 passes through the connecting platform 41 along the extending direction of the snap-fit ​​hole 411, and communicates with the snap-fit ​​hole 411.

[0048] This application has provided a detailed description of a shock-absorbing pad and a high-voltage distribution box provided in the embodiments of this application. 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.

Claims

1. A shock-absorbing pad for use in high-voltage distribution boxes, characterized in that, include: The body (10) has a mounting hole (11), which is a through hole; A protrusion (20) is connected to the body (10). Along the extension direction of the mounting hole (11), protrusions (20) are provided on both sides of the body (10). The protrusion (20) has a spherical groove (21). The opening of the spherical groove (21) faces the side of the protrusion (20) away from the body (10). Along the extension direction of the mounting hole (11), the maximum depth of the spherical groove (21) is a, and the radius of the spherical groove (21) is b, satisfying: a≤b.

2. The shock-absorbing pad for a high-voltage distribution box according to claim 1, characterized in that, Along the extending direction of the mounting hole (11), the protrusion (20) has a minimum length c, satisfying: a ≤ c.

3. The shock-absorbing pad for a high-voltage distribution box according to claim 2, characterized in that, The protrusion (20) is cylindrical, and the axis of the protrusion (20) is parallel to the straight line extending from the mounting hole (11).

4. The shock-absorbing pad for a high-voltage distribution box according to claim 1, characterized in that, The body (10) also has a relief groove (12) which is disposed on the outer wall of the body (10); The clearance groove (12) is an annular groove that runs from end to end, and the axis of the clearance groove (12) coincides with the straight line extending from the mounting hole (11).

5. The shock-absorbing pad for a high-voltage distribution box according to claim 1, characterized in that, The body (10) also has a groove (13), which communicates with the mounting hole (11) through the bottom of the groove; Along the extension direction of the mounting hole (11), grooves (13) are provided on both sides of the body (10), and the openings of the grooves (13) on both sides of the body (10) are arranged opposite to each other.

6. The shock-absorbing pad for a high-voltage distribution box according to claim 1, characterized in that, Along the extension direction of the mounting hole (11), a plurality of protrusions (20) are provided on both sides of the body (10), and the plurality of protrusions (20) on any side are circumferentially spaced around the straight line where the extension direction of the mounting hole (11) is located.

7. The shock-absorbing pad for a high-voltage distribution box according to claim 1, characterized in that, The maximum depth a and the radius b of the spherical groove (21) satisfy: b≤a≤b.

8. The shock-absorbing pad for a high-voltage distribution box according to claim 1, characterized in that, The maximum depth a and the radius b of the spherical groove (21) satisfy: b≤a≤b.

9. The shock-absorbing pad for a high-voltage distribution box according to claim 1, characterized in that, The maximum depth a and the radius b of the spherical groove (21) satisfy: b≤a≤b.

10. A high-voltage distribution box, characterized in that, Includes the shock-absorbing pad for a high-voltage distribution box as described in any one of claims 1 to 9, and: The housing (40) has a connecting platform (41) on its outer wall, and the connecting platform (41) has a snap-fit ​​hole (411). Sleeve (50), the sleeve (50) includes a cylinder (51) and a stop (52), the stop (52) is disposed on the outer wall of the sleeve (50) and at one end of the sleeve (50) in the extending direction; The cylindrical body (51) passes through the mounting hole (11), the baffle (52) abuts against the protrusion (20), and the shock-absorbing pad is disposed in the snap-fit ​​hole (411). The connecting platform (41) has a mounting cut (412) extending from the side toward the snap-fit ​​hole (411), the mounting cut (412) passing through the connecting platform (41) along the extending direction of the snap-fit ​​hole (411) and communicating with the snap-fit ​​hole (411).

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