Voltage balancer of pre-charging rectifier bridge

Abstract

The utility model relates to the technical field of voltage balancers, in particular to a voltage balancer of a pre-charging rectifier bridge, which comprises a voltage balancer body and a mounting seat matched with the voltage balancer body, two rectangular insertion blocks are arranged at the bottom of the voltage balancer body, strip-shaped insertion holes are formed in the front sides of the rectangular insertion blocks, and the mounting seat comprises an I-shaped plate. Two rectangular inserting openings are formed in the top of the I-shaped plate, the two rectangular inserting blocks are inserted into the two rectangular inserting openings respectively, and a movable rod is movably connected to the front side of a middle transverse rod of the I-shaped plate. According to the voltage balancer of the pre-charging rectifier bridge, when the voltage balancer body needs to be disassembled, a worker pulls a movable rod forwards, so that two rectangular positioning blocks are moved out of two strip-shaped insertion holes respectively, positioning of the two rectangular insertion blocks is relieved, then the worker moves the voltage balancer body upwards, and the voltage balancer body is disassembled. And the two rectangular insertion blocks are moved out of the two rectangular sockets respectively, so that the voltage balancer body can be disassembled quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage balancers, in particular to a voltage balancer of a pre-charged rectifier bridge. Background Art

[0002] In the field of power electronics, technical solutions for high performance and high reliability are particularly important. Pre-charged rectifier bridge is a technology that emerged in this context. It is mainly used in certain specific power systems, such as electric vehicles, renewable energy systems and power systems in various industrial applications. The core function of the pre-charged rectifier bridge is to slowly charge the capacitor or battery pack through a controlled low current stage before the system starts to prevent the high current shock that occurs at the moment of power on. This not only protects the sensitive components in the system, but also improves the stability and safety of the entire power system.

[0003] In the pre-charged rectifier bridge system, the voltage balancer plays a vital role. It is mainly responsible for balancing the voltage between the various parts of the power system to prevent uneven voltage from causing damage to the system components, thereby ensuring the smooth operation and long-term durability of the entire system. The importance of voltage balancing lies in its ability to avoid problems such as system overload, battery overcharge or over-discharge, which may lead to reduced performance, shortened life, and even system failure.

[0004] However, in the existing technical solutions, the installation method of the voltage balancer of the pre-charged rectifier bridge mostly uses bolts to fix the mounting ears on the voltage balancer to the equipment. This traditional fixing method means that when the voltage balancer needs to be repaired, maintenance personnel need to repeatedly disassemble and install multiple bolts, which is not only time-consuming and labor-intensive, but also very inconvenient. In addition, most current voltage balancers use a package design, which can protect the internal circuit, but the relatively closed environment is not conducive to heat dissipation, which may cause the voltage balancer to overheat when running at high load, affecting performance and life. In view of this, we propose a voltage balancer with a pre-charged rectifier bridge. Utility Model Content

[0005] The purpose of the utility model is to provide a voltage balancer for a pre-charged rectifier bridge to solve the problems raised in the above background technology.

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

[0007] A voltage balancer for a pre-charging rectifier bridge comprises a voltage balancer body and a mounting seat adapted to the voltage balancer body, wherein two rectangular plug-ins arranged symmetrically on the left and right are arranged at the bottom of the voltage balancer body, and a strip-shaped plug-in hole is provided on the front side of the rectangular plug-in block, and the mounting seat comprises an I-shaped plate, and two rectangular sockets arranged symmetrically on the top of the middle cross bar of the I-shaped plate are provided, and the two rectangular plug-ins are respectively inserted into the two rectangular sockets, and the front sides of the inner walls of the two rectangular sockets are provided with strip-shaped avoidance holes, and a movable rod movable forward and backward is penetrated through the middle of the front side of the middle cross bar of the I-shaped plate, and a strip bar is provided on the outer wall of the movable rod, and rectangular positioning blocks are provided on the rear side of the strip bar and near the left and right ends, and the rectangular positioning blocks pass through the strip-shaped avoidance holes and are inserted into the strip plug-in hole;

[0008] When the voltage balancer body needs to be disassembled, the staff pulls the movable rod forward, so that the movable rod drives the bar rod to move forward, and the bar rod drives the two rectangular positioning blocks to move forward, so that the two rectangular positioning blocks are respectively moved out of the two bar plug holes to release the positioning of the two rectangular plug blocks, and then the staff moves the voltage balancer body upward, so that the two rectangular plug blocks are respectively moved out of the two rectangular plug holes, thereby realizing the disassembly of the voltage balancer body, which is convenient for the staff to quickly complete the disassembly and assembly of the voltage balancer;

[0009] A first rectangular heat-conducting plate is provided through the top of the voltage balancer body, and a plurality of first heat-dissipating strips are provided on the top of the first rectangular heat-conducting plate and are arranged equidistantly from front to back. The heat generated by the internal operation of the voltage balancer body is transferred to the outside through the first rectangular heat-conducting plate. The plurality of first heat-dissipating strips can increase the contact surface between the first rectangular heat-conducting plate and the outside air, thereby improving the heat dissipation effect.

[0010] Preferably, the four ends of the top of the I-shaped plate are each provided with an L-shaped groove, and the bottom of the inner wall of the L-shaped groove is provided with a mounting hole for bolts to pass through. The I-shaped plate can be fixed to the equipment with bolts, and the L-shaped groove can accommodate the head of the bolt to prevent the bolt head from affecting the installation of the voltage balancer body.

[0011] Preferably, an anti-slip block is provided at the rear end of the movable rod, and a spring is sleeved on the outer wall of the movable rod. The front end of the spring abuts against the rear side of the middle cross bar of the I-shaped plate, and the rear end of the spring abuts against the front side of the anti-slip block. Under the action of the spring, the movable rod remains fixed in the absence of external force, thereby fixing the positions of the two rectangular positioning blocks and preventing the rectangular plug block from moving out of the rectangular socket.

[0012] Preferably, a pull block is provided at the front end of the movable rod to facilitate the staff to pull the movable rod forward. When the spring is not compressed, the front side of the pull block is located behind the front side of the voltage balancer body, and the front side of the pull block is 2-3 cm away from the front side of the voltage balancer body, so that the pull block is not easily touched by foreign objects and does not affect the use.

[0013] Preferably, the left and right sides of the strip rod are respectively fitted with the left and right sides of the inner wall of the I-shaped plate, so that the strip rod can only move forward and backward to prevent the strip rod from rotating, thereby ensuring that the rectangular positioning block can pass through the strip avoidance hole.

[0014] Preferably, a plurality of circular ventilation holes are arranged equidistantly on the left and right sides of the first heat dissipation strip, so that air can flow from the front to the back or from the back to the front of the first heat dissipation strip, thereby improving the heat dissipation effect of the first heat dissipation strip;

[0015] The tops of the plurality of first heat dissipation strips are commonly connected to a second rectangular heat conductive plate, the length of the second rectangular heat conductive plate is the same as the length of the voltage balancer body, and the width of the second rectangular heat conductive plate is the same as the width of the voltage balancer body, so as to prevent the first heat dissipation strips from being exposed and injuring the staff.

[0016] Preferably, two strip heat conducting plates symmetrically arranged front to back are provided through the bottom of the voltage balancer body, a plurality of second heat dissipation strips are provided at the bottom of the strip heat conducting plates, and no second heat dissipation strips are provided at the bottom of the strip heat conducting plates and at the position of the movable rod to avoid affecting the forward and backward movement of the movable rod. The strip heat conducting plates combined with the plurality of second heat dissipation strips can further improve the heat dissipation effect of the voltage balancer body.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The voltage balancer of the pre-charged rectifier bridge has two rectangular plugs respectively inserted into two rectangular sockets, and two rectangular positioning blocks respectively inserted into two strip-shaped sockets, so that the two rectangular plugs are respectively fixed in the two rectangular sockets to realize the installation of the voltage balancer body and the mounting seat.

[0019] 2. For the voltage balancer of the pre-charging rectifier bridge, when it is necessary to disassemble the voltage balancer body, the staff pulls the movable rod forward so that the movable rod drives the bar rod to move forward, and the bar rod drives the two rectangular positioning blocks to move forward, so that the two rectangular positioning blocks are respectively moved out of the two bar sockets to release the positioning of the two rectangular plug-ins, and then the staff moves the voltage balancer body upward so that the two rectangular plug-ins are respectively moved out of the two rectangular sockets, thereby realizing the disassembly of the voltage balancer body, which is convenient for the staff to quickly complete the disassembly and assembly of the voltage balancer.

[0020] 3. The voltage balancer of the pre-charged rectifier bridge, the heat generated by the internal operation of the voltage balancer body is transferred to the outside through the first rectangular heat conductive plate, and the multiple first heat dissipation strips can increase the contact surface between the first rectangular heat conductive plate and the outside air, thereby improving the heat dissipation effect. The front side of the first heat dissipation strip is provided with multiple circular ventilation holes arranged equidistantly on the left and right, so that the airflow can flow from the front to the back or from the back to the front of the first heat dissipation strip, thereby improving the heat dissipation effect of the first heat dissipation strip.

[0021] 4. The voltage balancer of the pre-charged rectifier bridge, the strip-shaped heat-conducting plate cooperates with a plurality of second heat-dissipating strips to further improve the heat dissipation effect of the voltage balancer body.

[0022] 5. The voltage balancer of the pre-charged rectifier bridge, under the action of the spring, keeps the movable rod fixed without the action of external force, so that the positions of the two rectangular positioning blocks are fixed, and the rectangular plug-in block is prevented from moving out of the rectangular socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0025] Figure 3 This is a schematic diagram of the voltage balancer body structure in the utility model;

[0026] Figure 4 It is a partial structural schematic diagram of the voltage balancer body in the utility model;

[0027] Figure 5 It is a schematic diagram of the mounting seat structure in the utility model.

[0028] In the figure: 1. voltage balancer body; 10. first rectangular heat-conducting plate; 11. first heat dissipation strip; 110. circular ventilation hole; 12. second rectangular heat-conducting plate; 13. strip heat-conducting plate; 14. second heat dissipation strip; 15. rectangular plug block; 150. strip plug hole; 2. mounting seat; 20. I-shaped plate; 200. L-shaped groove; 201. mounting hole; 202. rectangular socket; 203. strip avoidance hole; 21. movable rod; 210. anti-drop block; 211. pull block; 22. spring; 23. strip rod; 24. rectangular positioning block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0032] A voltage balancer for a pre-charged rectifier bridge comprises a voltage balancer body 1 and a mounting seat 2 adapted to the voltage balancer body 1. Two rectangular plugs 15 are arranged symmetrically on the bottom of the voltage balancer body 1. A strip plug 150 is provided on the front side of the rectangular plug 15. The mounting seat 2 comprises an I-shaped plate 20. Two rectangular sockets 202 arranged symmetrically on the top of the middle cross bar of the I-shaped plate 20 are provided. The two rectangular plugs 15 are respectively inserted into the two rectangular sockets 202. The front sides of the inner walls of the two rectangular sockets 202 are both provided with strip avoidance holes 203. A movable rod 21 that can move forward and backward is penetrated in the middle of the front side of the middle cross bar of the I-shaped plate 20. A strip rod 23 is provided on the outer wall of the movable rod 21. Rectangular positioning blocks 24 are provided on the rear side of the strip rod 23 and near the left and right ends. The rectangular positioning blocks 24 pass through the strip avoidance holes 203 and are inserted into the strip plug 150.

[0033] When the voltage balancer body 1 needs to be disassembled, the staff pulls the movable rod 21 forward, so that the movable rod 21 drives the bar 23 to move forward, and the bar 23 drives the two rectangular positioning blocks 24 to move forward, so that the two rectangular positioning blocks 24 are respectively moved out of the two bar plug holes 150 to release the positioning of the two rectangular plug blocks 15, and then the staff moves the voltage balancer body 1 upward to move the two rectangular plug blocks 15 out of the two rectangular sockets 202, so as to realize the disassembly of the voltage balancer body 1, which is convenient for the staff to quickly complete the disassembly and assembly of the voltage balancer;

[0034] A first rectangular heat conducting plate 10 is provided through the top of the voltage balancer body 1. A plurality of first heat dissipating strips 11 are arranged equidistantly from front to back on the top of the first rectangular heat conducting plate 10. The heat generated by the internal operation of the voltage balancer body 1 is transferred to the outside through the first rectangular heat conducting plate 10. The plurality of first heat dissipating strips 11 can increase the contact surface between the first rectangular heat conducting plate 10 and the outside air, thereby improving the heat dissipation effect.

[0035] In this embodiment, L-shaped grooves 200 are provided at the four ends of the top of the I-shaped plate 20, and a mounting hole 201 is provided at the bottom of the inner wall of the L-shaped groove 200. The mounting hole 201 is for bolts to pass through. The I-shaped plate 20 can be fixed to the equipment with bolts. The L-shaped groove 200 can accommodate the head of the bolt to prevent the bolt head from affecting the installation of the voltage balancer body 1.

[0036] Specifically, an anti-slip block 210 is provided at the rear end of the movable rod 21, and a spring 22 is provided on the outer wall of the movable rod 21. The front end of the spring 22 abuts against the rear side of the middle cross bar of the I-shaped plate 20, and the rear end of the spring 22 abuts against the front side of the anti-slip block 210. Under the action of the spring 22, the movable rod 21 remains fixed in the absence of external force, thereby fixing the positions of the two rectangular positioning blocks 24 and preventing the rectangular plug block 15 from moving out of the rectangular socket 202.

[0037] Furthermore, a pull block 211 is provided at the front end of the movable rod 21, which is convenient for the staff to pull the movable rod 21 forward. When the spring 22 is not compressed, the front side of the pull block 211 is located behind the front side of the voltage balancer body 1, and the front side of the pull block 211 is 2-3 cm away from the front side of the voltage balancer body 1, so that the pull block 211 is not easily touched by foreign objects and does not affect the use.

[0038] Furthermore, the left and right sides of the strip rod 23 are respectively fitted with the left and right sides of the inner wall of the I-shaped plate 20, so that the strip rod 23 can only move forward and backward to prevent the strip rod 23 from rotating, thereby ensuring that the rectangular positioning block 24 can pass through the strip avoidance hole 203.

[0039] Furthermore, a plurality of circular ventilation holes 110 are arranged equidistantly on the left and right sides of the first heat dissipation bar 11, so that air can flow from the front to the back or from the back to the front of the first heat dissipation bar 11, thereby improving the heat dissipation effect of the first heat dissipation bar 11;

[0040] The tops of multiple first heat dissipation strips 11 are commonly connected to a second rectangular heat conductive plate 12, the length of the second rectangular heat conductive plate 12 is the same as the length of the voltage balancer body 1, and the width of the second rectangular heat conductive plate 12 is the same as the width of the voltage balancer body 1, so as to prevent the first heat dissipation strips 11 from being exposed to the outside and injuring the staff.

[0041] Furthermore, two strip heat conducting plates 13 symmetrically arranged front to back are provided through the bottom of the voltage balancer body 1, and a plurality of second heat dissipation bars 14 are provided at the bottom of the strip heat conducting plates 13. The second heat dissipation bars 14 are not provided at the bottom of the strip heat conducting plates 13 and at the position of the movable rod 21 to avoid affecting the forward and backward movement of the movable rod 21. The strip heat conducting plates 13 combined with the plurality of second heat dissipation bars 14 can further improve the heat dissipation effect of the voltage balancer body 1.

[0042] When the voltage balancer of the pre-charging rectifier bridge of this embodiment is in use, the staff uses bolts to fix the I-shaped plate 20 on the equipment, then holds the voltage balancer body 1 with one hand, and pulls the pull block 211 outward with the other hand, so that the pull block 211 drives the movable rod 21 to pull forward, the spring 22 is compressed, the movable rod 21 drives the strip rod 23 to move forward, and the strip rod 23 drives the two rectangular positioning blocks 24 to move forward, so that the two rectangular positioning blocks 24 are respectively moved out of the two rectangular sockets 202, and then the staff inserts the two rectangular plug-in blocks 15 on the voltage balancer body 1 into the two rectangular sockets 202 respectively until the bottom of the voltage balancer body 1 is in contact with the top of the I-shaped plate 20. At this time, the staff releases the pull block 211, and under the action of the spring 22, the movable rod 21 resets and moves backward, so that the rectangular positioning block 24 passes through the strip avoidance hole 203 and is plugged into the strip socket 150, so that the two rectangular plug-in blocks 15 are respectively fixed in the two rectangular sockets 202. shaped socket 202, the voltage balancer body 1 and the mounting base 2 are quickly installed, the heat generated by the internal operation of the voltage balancer body 1 is transferred to the outside through the first rectangular heat conducting plate 10, and the plurality of first heat dissipation strips 11 can increase the contact surface between the first rectangular heat conducting plate 10 and the outside air, thereby improving the heat dissipation effect, and the strip heat conducting plate 13 cooperates with the plurality of second heat dissipation strips 14 to further improve the heat dissipation effect of the voltage balancer body 1; when the voltage balancer body 1 needs to be disassembled, the staff pulls the movable rod 21 forward, so that the movable rod 21 drives the strip rod 23 to move forward, and the strip rod 23 drives the two rectangular positioning blocks 24 to move forward, so that the two rectangular positioning blocks 24 are respectively moved out of the two strip-shaped sockets 150 to release the positioning of the two rectangular plug blocks 15, and then the staff moves the voltage balancer body 1 upward, so that the two rectangular plug blocks 15 are respectively moved out of the two rectangular sockets 202, thereby realizing the rapid disassembly of the voltage balancer body 1.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A voltage balancer for a pre-charged rectifier bridge, comprising a voltage balancer body (1) and a mounting seat (2) adapted to the voltage balancer body (1), characterized in that: The bottom of the voltage balancer body (1) is provided with two rectangular plug blocks (15) arranged symmetrically on the left and right, and a strip-shaped plug hole (150) is provided on the front side of the rectangular plug block (15). The mounting seat (2) comprises an I-shaped plate (20), and two rectangular sockets (202) arranged symmetrically on the top of the middle cross bar of the I-shaped plate (20). The two rectangular plug blocks (15) are respectively plugged into the two rectangular sockets (202), and the front sides of the inner walls of the two rectangular sockets (202) are provided with strip-shaped avoidance holes (203). The I-shaped plate (20) A movable rod (21) that can move forward and backward is provided through the middle of the front side of the middle crossbar, a strip rod (23) is provided on the outer wall of the movable rod (21), and rectangular positioning blocks (24) are provided on the rear side of the strip rod (23) and near the left and right ends, the rectangular positioning blocks (24) pass through the strip avoidance holes (203) and are plugged into the strip plug holes (150), a first rectangular heat conducting plate (10) is provided through the top of the voltage balancer body (1), and a plurality of first heat dissipation strips (11) arranged equidistantly from front to back are provided on the top of the first rectangular heat conducting plate (10).

2. The voltage balancer of the pre-charged rectifier bridge according to claim 1, characterized in that: The four ends of the top of the I-shaped plate (20) are each provided with an L-shaped groove (200), and the bottom of the inner wall of the L-shaped groove (200) is provided with a mounting hole (201).

3. The voltage balancer of the pre-charged rectifier bridge according to claim 1, characterized in that: The rear end of the movable rod (21) is provided with an anti-slip block (210), and the outer wall of the movable rod (21) is sleeved with a spring (22), the front end of the spring (22) abuts against the rear side of the middle cross bar of the I-shaped plate (20), and the rear end of the spring (22) abuts against the front side of the anti-slip block (210).

4. The voltage balancer of the pre-charged rectifier bridge according to claim 3, characterized in that: A pull block (211) is provided at the front end of the movable rod (21); when the spring (22) is not compressed, the front side of the pull block (211) is located behind the front side of the voltage balancer body (1), and the front side of the pull block (211) is 2-3 cm away from the front side of the voltage balancer body (1).

5. The voltage balancer of the pre-charged rectifier bridge according to claim 1, characterized in that: The left and right sides of the strip-shaped rod (23) are respectively in contact with the left and right sides of the inner wall of the I-shaped plate (20).

6. The voltage balancer of the pre-charged rectifier bridge according to claim 1, characterized in that: A plurality of circular ventilation holes (110) are arranged equidistantly on the left and right sides of the first heat dissipation strip (11), and the tops of the plurality of first heat dissipation strips (11) are connected to a second rectangular heat conducting plate (12), the length of the second rectangular heat conducting plate (12) is the same as the length of the voltage balancer body (1), and the width of the second rectangular heat conducting plate (12) is the same as the width of the voltage balancer body (1).

7. The voltage balancer of the pre-charged rectifier bridge according to claim 1, characterized in that: Two strip-shaped heat-conducting plates (13) arranged symmetrically in the front and back directions are provided through the bottom of the voltage balancer body (1), and a plurality of second heat-dissipating strips (14) are provided at the bottom of the strip-shaped heat-conducting plates (13).

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