A high-voltage input rectifier

Abstract

This invention relates to a high-voltage input rectifier, comprising a mounting base, positive and negative guide plates fixed below the mounting base, a rectifier module fixed above the mounting base, and a grounding plate. The positive and negative guide plates include a positive guide plate and a negative guide plate, with flat ends and closely spaced vertical plates in the middle. The vertical plates in the middle of the positive and negative guide plates protrude to both sides, forming through holes. The mounting base has five mounting areas in sequence. The first mounting area includes two first mounting slots located on both sides of the positive and negative guide plates. The second mounting area includes a second mounting slot and a third mounting slot, the second mounting slot being divided into two parts in the middle, and the third mounting slot being a cuboid space, the two being interconnected. The third mounting area includes a fourth mounting slot that mates with the through holes in the middle of the positive and negative guide plates, and two fifth mounting slots located on both sides of the fourth mounting slot. Compared with the prior art, this invention has advantages such as high integration, small installation size, and good rectification effect.

Description

Technical Field

[0001] This invention relates to the field of motor controllers, and in particular to a high-voltage input rectifier. Background Technology

[0002] As the operating frequency of the motor controller, a core component of electric drive, increases, electromagnetic interference (EMI) problems become more prominent, and the EMC requirements of the motor controller at the vehicle end are also becoming more stringent. Traditional electric vehicles all require a motor controller to control the motor operation. During the operation of the motor controller, electromagnetic interference is generated. Although the motor controller's housing is an aluminum alloy shell with good shielding and blocking effects, the current from the battery end can be conducted into the motor controller through the wiring harness. It is very difficult to eliminate this conducted interference. The traditional method is to simply add a magnetic ring to solve the problem. However, because there are relatively few corresponding rectifier stages, the mounting bracket itself is also large and the installation is relatively scattered, it is difficult to rely solely on the mounting bracket itself to block external interference. Therefore, it is difficult to meet the vehicle's EMC testing requirements.

[0003] Chinese Patent CN210174639U, published on March 24, 2020, discloses an electromagnetic interference suppression device, an electric drive controller, and an electric vehicle, relating to anti-interference technology for electric drive controllers. The electromagnetic interference suppression device includes: a first electromagnetic interference suppression device, one end of which is connected to the power battery via a high-voltage connector, and the other end of which is connected to a high-voltage power drive unit; and a second electromagnetic interference suppression device, one end of which is connected to the battery via a low-voltage connector, and the other end of which is connected to a low-voltage control unit. This device is installed inside the electric drive controller, and a metal shielding partition is added between the power drive circuit and the control circuit, and a magnetic ring is added to its connecting harness to improve the motor controller's anti-electromagnetic interference capability.

[0004] The device can only suppress common-mode noise and differential-mode noise, and there is still much room for improvement in its anti-interference performance. In addition, the device has defects such as dispersed structure, complicated connection and inconvenient installation. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-voltage input rectifier device with high integration, small installation size, and good rectification effect.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A high-voltage input rectifier includes a mounting base, positive and negative guide plates fixed below the mounting base, a rectifier module fixed above the mounting base, and a grounding plate.

[0008] The positive and negative guide plates include a positive guide plate and a negative guide plate. The two ends of the positive and negative guide plates are flat plate structures, and the middle part is a vertical plate structure that is close to each other. The middle vertical plate of the positive and negative guide plates protrudes to both sides to form through holes.

[0009] The mounting base is sequentially provided with a first mounting area, a second mounting area, a third mounting area, a fourth mounting area, and a fifth mounting area. The first mounting area includes two first mounting slots located on both sides of the positive and negative guide plates, respectively. The second mounting area includes a second mounting slot and a third mounting slot, the second mounting slot being divided into two parts in the middle. The third mounting slot is a cuboid space, with the bottom end of the second mounting slot and the top end of the third mounting slot penetrating through it. The third mounting area includes a fourth mounting slot and two fifth mounting slots. The fourth mounting slot mates with the through hole in the middle of the positive and negative guide plates, and the two fifth mounting slots are located on both sides of the fourth mounting slot, respectively. The fourth mounting area includes a sixth mounting slot and a seventh mounting slot, the sixth mounting slot being divided into two parts in the middle. The seventh mounting slot is a cuboid space, with the bottom end of the sixth mounting slot and the top end of the seventh mounting slot penetrating through it. The fifth mounting area includes two eighth mounting slots located on both sides of the positive and negative guide plates, respectively.

[0010] Furthermore, the rectifier module includes a first magnet device and a second magnet device. Both the first magnet device and the second magnet device adopt an upper and lower magnet structure. The upper and lower magnet structure includes an upper magnet and a lower magnet. The upper magnet has an arched structure and a groove for accommodating the positive and negative guide plates is provided on one side of the upper magnet. The lower magnet has a cuboid structure and cooperates with the side of the upper magnet with the groove, thus sealing the groove.

[0011] The upper magnet of the first magnet device is installed in the second mounting slot and the lower magnet is installed in the third mounting slot. The upper magnet of the second magnet device is installed in the sixth mounting slot and the lower magnet is installed in the seventh mounting slot. Both the first magnet device and the second magnet device surround the outside of the positive and negative guide plates.

[0012] Furthermore, the high-voltage input rectifier also includes a first leaf spring and a second leaf spring. Both the first leaf spring and the second leaf spring adopt an I-shaped leaf spring structure, with elastic portions at both ends of the I-shaped leaf spring structure, which are bent toward the same side. The first leaf spring is elastically pressed to the mounting base, and the main body of the first leaf spring is located above the first magnet device. The second leaf spring is elastically pressed to the mounting base, and the main body of the second leaf spring is located above the second magnet device.

[0013] Furthermore, the main body of the I-shaped leaf spring structure is concave relative to the two end portions.

[0014] Furthermore, the rectifier module also includes a first common-mode device, a second common-mode device, and a third common-mode device. Each of the first common-mode device, the second common-mode device, and the third common-mode device includes two parallel safety capacitors. The first common-mode device is installed in the two first mounting slots, the second common-mode device is installed in the two fifth mounting slots, and the third common-mode device is installed in the two eighth mounting slots.

[0015] The positive guide plate is connected to the positive pins of the first common-mode device, the second common-mode device, and the third common-mode device, respectively. The negative guide plate is connected to the negative pins of the first common-mode device, the second common-mode device, and the third common-mode device, respectively. The grounding plate is connected to the grounding pins of the first common-mode device, the second common-mode device, and the third common-mode device, respectively.

[0016] Furthermore, the rectifier module also includes a first differential mode device, which includes a high-frequency interference suppression capacitor, and the first differential mode device is installed in the fourth mounting slot.

[0017] Furthermore, the first common-mode device, the second common-mode device, the third common-mode device, and the first differential-mode device are fixedly installed in the mounting base by potting.

[0018] Furthermore, the grounding plate includes a flat plate portion, a bent portion, and a vertical plate portion connected in sequence. The flat plate portion is connected to the mounting base, and the vertical plate portion is used to connect the grounding pin.

[0019] Furthermore, both the positive and negative guide plates and the grounding plate are provided with multiple U-shaped forked structures for connecting pins.

[0020] Furthermore, the mounting base and the positive and negative guide plates are an integrated plastic-coated structure.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) The present invention proposes a high-voltage input rectifier device. The positive and negative guide plates have flat plate structures at both ends and vertical plate structures close to each other in the middle. They are fixed by a mounting base. Since the positive and negative guide plates have vertical plate structures close to each other in the middle, it is easy to set a compact mounting groove on the mounting base. This not only allows the rectifier module to be connected to the positive and negative pins of the positive and negative guide plates respectively, but also allows it to surround the outside of the positive and negative guide plates. Furthermore, it can set up to six rectifier stages, which can directly block external interference at the input end outside the controller box. It has the advantages of high integration, small installation volume, and good rectification effect.

[0023] (2) The common-mode device of this invention is set with three channels, each consisting of two parallel safety Y2 capacitors. By setting different capacitance values, interference signals of different frequencies are filtered out. The grounding terminals of all three channels are connected to the grounding plate and fixed together with the mounting base to the bottom surface of the controller housing to achieve grounding and complete the three-channel rectification. The magnet device is set with two channels. By selecting different signal filtering materials, interference of different frequency signals can be further filtered out through the magnet. The differential-mode device can select small capacitance values ​​to filter out high-frequency signal interference. After the rectification of the above flow stages, the current can be ensured to be pure and interference-free when flowing into the motor controller, meeting the electromagnetic compatibility requirements of the whole vehicle. Attached Figure Description

[0024] Figure 1 This is a first structural schematic diagram of a high-voltage input rectifier device provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the second structure of a high-voltage input rectifier provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the third structure of a novel high-voltage input rectifier provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a positive and negative guide plate provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of a grounding plate provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of a first magnet device and a first magnet device (both adopt the same structure) provided in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of a first leaf spring and a second leaf spring (both adopt the same structure) provided in an embodiment of the present invention;

[0031] In the diagram, 1. Positive and negative guide plates, 2. First common-mode device, 3. First upper magnet, 4. First lower magnet, 5. First differential-mode device, 6. Second common-mode device, 7. Second upper magnet, 8. Second lower magnet, 9. Third common-mode device, 10. First leaf spring, 11. Second leaf spring, 12. Grounding plate, 13. Mounting base, 101. First mounting slot, 102. Second mounting slot, 103. Third mounting slot, 104. Fourth mounting slot, 105. Fifth mounting slot, 106. Sixth mounting slot, 107. Seventh mounting slot, 108. Eighth mounting slot. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The devices of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility product is usually placed during use. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] Example 1

[0039] This invention considers integrating more anti-interference devices with the mounting base, which is mounted on the bottom surface of the motor controller housing. This ensures that the current from the vehicle battery passes through multiple rectification and filtering stages before entering the motor controller, quickly eliminating some interference and improving the shielding performance of the motor controller to meet higher-level vehicle testing requirements. Therefore, this embodiment provides a high-voltage input rectification device to meet the EMC testing requirements of the vehicle. This device includes a mounting base 13, positive and negative guide plates 1 fixed below the mounting base 13, a rectifier module fixed above the mounting base 13, and a grounding plate 12.

[0040] The positive and negative guide plates 1 include a positive guide plate and a negative guide plate. The two ends of the positive and negative guide plates 1 are flat plate structures, and the middle part is a vertical plate structure that is close to each other. The middle vertical plate of the positive and negative guide plates 1 protrudes to both sides to form a through hole for accommodating the first differential mode device 5.

[0041] The mounting base 13 is provided with a first mounting area, a second mounting area, a third mounting area, a fourth mounting area, and a fifth mounting area in sequence. The first mounting area includes two first mounting slots 101 located on both sides of the positive and negative guide plates 1, respectively. The second mounting area includes a second mounting slot 102 and a third mounting slot 103. The second mounting slot 102 is divided into two parts in the middle, and the third mounting slot 103 is a cuboid space, with the bottom end of the second mounting slot 102 and the top end of the third mounting slot 103 penetrating through it. The third mounting area includes a fourth mounting slot 104 and... Two fifth mounting slots 105 and a fourth mounting slot 104 are fitted with through holes in the middle of the positive and negative guide plates 1. The two fifth mounting slots 105 are located on both sides of the fourth mounting slot 104. The fourth mounting area includes a sixth mounting slot 106 and a seventh mounting slot 107. The sixth mounting slot 106 is divided into two parts in the middle. The seventh mounting slot 107 is a cuboid space. The bottom end of the sixth mounting slot 106 and the top end of the seventh mounting slot 107 are connected. The fifth mounting area includes two eighth mounting slots 108 located on both sides of the positive and negative guide plates 1.

[0042] The five mounting areas mentioned above can be used to install different rectifier devices. For example, the first mounting slot 101, the fifth mounting slot 105 and the eighth mounting slot 108 can be used to install common mode devices, the second mounting slot 102, the third mounting slot 103, the sixth mounting slot 106 and the seventh mounting slot 107 can be used to install magnet devices, and the fourth mounting slot 104 can be used to install differential mode devices.

[0043] Based on the structure of the positive and negative guide plates and the mounting base, six rectification stages can be set up, which can directly block external interference at the input end from entering the controller housing. It has the advantages of high integration, small installation size, and good rectification effect.

[0044] The grounding plate 12 includes a flat plate, a bent plate, and a vertical plate connected in sequence. The flat plate is connected to the mounting base 13, and the vertical plate is used to connect the grounding pin.

[0045] Both the positive and negative flow guide plate 1 and the grounding plate 12 are provided with multiple U-shaped branch structures for connecting the pins of the first common mode device 2, the first differential mode device 5, the second common mode device 6, and the third common mode device 9. The pins can be directly soldered to the positive and negative flow guide plate 1 and the grounding plate 12 through the U-shaped branch structure, without the need for complicated wiring work.

[0046] The mounting base 13 and the positive and negative guide plates 1 are preferably an integrated plastic-coated structure.

[0047] The following installation scheme can be preferred for the specific installation details of the rectifier module.

[0048] 1. Installation of magnet components

[0049] The rectifier module includes a first magnet device and a second magnet device. Both the first magnet device and the second magnet device adopt an upper and lower magnet structure. The upper and lower magnet structure includes an upper magnet and a lower magnet. The upper magnet has an arched structure and a groove on one side of the upper magnet for accommodating the positive and negative guide plates 1. The lower magnet has a cuboid structure and matches the side of the upper magnet with the groove, thus sealing the groove.

[0050] The upper magnet of the first magnet device is installed in the second mounting slot 102 and the lower magnet is installed in the third mounting slot 103. The upper magnet of the second magnet device is installed in the sixth mounting slot 106 and the lower magnet is installed in the seventh mounting slot 107. Both the first magnet device and the second magnet device are surrounding the outside of the positive and negative guide plates 1.

[0051] The high-voltage input rectifier also includes a first leaf spring 10 and a second leaf spring 11. Both the first leaf spring 10 and the second leaf spring 11 adopt an I-shaped leaf spring structure. The two ends of the I-shaped leaf spring structure are elastic parts and are bent towards the same side. The first leaf spring 10 is connected to the mounting base 13 through elastic pressing, and the main body of the first leaf spring 10 is located above the first magnet device. The second leaf spring 11 is connected to the mounting base 13 through elastic pressing, and the main body of the second leaf spring 11 is located above the second magnet device.

[0052] Preferably, the main body of the I-shaped leaf spring structure is concave relative to the two ends. While the two ends are locked, the upper end of the I-shaped leaf spring structure will press against the first magnet device or the second magnet device, making the device more stable.

[0053] The material of the first magnet device is a medium-frequency signal anti-interference material, and the material of the second magnet device is a high-frequency signal anti-interference material.

[0054] 2. Common mode devices

[0055] The rectifier module also includes a first common-mode device 2, a second common-mode device 6, and a third common-mode device 9. The first common-mode device 2, the second common-mode device 6, and the third common-mode device 9 each include two parallel safety capacitors. The first common-mode device 2 is installed in two first mounting slots 101, the second common-mode device 6 is installed in two fifth mounting slots 105, and the third common-mode device 9 is installed in two eighth mounting slots 108.

[0056] The positive guide plate is connected to the positive pins of the first common mode device 2, the second common mode device 6, and the third common mode device 9, respectively. The negative guide plate is connected to the negative pins of the first common mode device 2, the second common mode device 6, and the third common mode device 9, respectively. The grounding plate 12 is connected to the grounding pins of the first common mode device 2, the second common mode device 6, and the third common mode device 9, respectively.

[0057] The capacitance of the first common-mode device 2 is in the range of 50 to 80 nF, the capacitance of the second common-mode device 6 is in the range of 5 to 15 nF, and the capacitance of the third common-mode device 9 is in the range of 200 to 240 nF.

[0058] 3. Differential mode devices

[0059] The rectifier module also includes a first differential device 5, which includes a high-frequency interference suppression capacitor and is installed in the fourth mounting slot 104.

[0060] The capacitance of the high-frequency interference suppression capacitor is in the range of 0.5 to 0.8 nF.

[0061] The high-voltage input rectifier device of this embodiment will be described in detail below.

[0062] like Figure 1 and Figure 2The diagram shows a high-voltage input rectifier structure of the present invention, including a mounting base 13 and positive and negative guide plates 1, a first common-mode device 2, a first upper magnet 3, a first lower magnet 4, a first differential-mode device 5, a second common-mode device 6, a second upper magnet 7, a second lower magnet 8, a third common-mode device 9, a first leaf spring 10, a second leaf spring 11, and a grounding plate 12 fixed on the mounting base 13. The mounting base 13 itself is integrated with the positive and negative guide plates 1 in a single plastic-coated form, and the positive and negative guide plates 1 extend through the entire mounting base 13 from front to back. The grounding plate 12 is integrated with the fixing holes of the mounting base 13. The first common-mode device 2 is installed at the input front end of the mounting base 13, and its positive and negative pins are electrically connected to the positive and negative guide plates 1, respectively, and its grounding pins are electrically connected to the grounding plate 12, respectively. An upper magnet 3 and a lower magnet 4 are fixed on the mounting base 13, respectively, above and below the positive and negative flow guide plates 1. A first differential mode device 5 is located in the middle of a second common mode device 6 and is fixed on the mounting base 13. Its positive and negative pins are electrically connected to the positive and negative flow guide plates 1, respectively. The second common mode device 6 is installed on both sides of the first differential mode device 5 and fixed on the mounting base 13. Its positive and negative pins are electrically connected to the positive and negative flow guide plates 1, respectively, and its grounding pins are electrically connected to the grounding plate 12, respectively. A second upper magnet 7, a second lower magnet 8, and a third common mode device 9 are fixed on the mounting base 13, respectively, above and below the positive and negative flow guide plates 1. A first leaf spring 10 and a second leaf spring 11 are both fastened to the side wall of the mounting base 13, respectively pressing the upper parts of the first upper magnet 3 and the second upper magnet 7.

[0063] like Figure 3As shown, the mounting base 13, in addition to integrating the positive and negative guide plates 1, also has a first mounting slot 101, a second mounting slot 102, a third mounting slot 103, a fourth mounting slot 104, a fifth mounting slot 105, a sixth mounting slot 106, a seventh mounting slot 107, and an eighth mounting slot 108. The first mounting slot 101 is located at the front of the mounting base 13 and on both sides of the positive and negative guide plates 1, used to fix the first common-mode device 2. The second mounting slot 102 is located behind the first mounting slot 101 and above the positive and negative guide plates 1, used to assemble the first upper magnet 3. The third mounting slot 103 is located directly below the second mounting slot 102, with its opening on the side of the mounting base 13, used to install the first lower magnet 4. The fourth mounting slot 104 is located directly behind the second mounting slot 102 and in the middle of the positive and negative guide plates 1. It is used to install the first differential mode device 5. The fifth mounting slot 105 is distributed on both sides of the fourth mounting slot 104 and is located on both sides of the positive and negative guide plates 1. It is used to place the second common mode device 6. The sixth mounting slot 106 is located behind the fifth mounting slot 105 and directly above the positive and negative guide plates 1. It is used to install the second upper magnet 7. The seventh mounting slot 107 is located directly below the sixth mounting slot 106 and its opening is on the side of the mounting base 13. It is used to install the second lower magnet 8. The eighth mounting slot 108 is located directly behind the seventh mounting slot 107 and on both sides of the positive and negative guide plates 1. It is used to install the third common mode device 9. There are two first mounting slots 101, both opening upwards and with a rectangular cross-section. The second mounting slot 102 is divided into two parts by a rib in the middle. The third mounting slot 103 is a horizontal cuboid space, with the bottom of the second mounting slot 102 and the top of the third mounting slot 103 penetrating each other. The fourth mounting slot 104 has a rectangular cross-section. The fifth and eighth mounting slots 105 and 108 each consist of two slots, with the fifth mounting slot 105 and the eighth mounting slot 108 having rectangular cross-sections respectively. The sixth mounting slot 106 is divided into two parts by a rib in the middle. The seventh mounting slot 107 is a horizontal cuboid space, with the bottom of the sixth mounting slot 106 and the top of the seventh mounting slot 107 penetrating each other.

[0064] like Figure 4 As shown, the positive and negative guide plates 1 each have a vertical branch at the front end, middle end and rear end, and the ends of the front end and rear end branches are U-shaped, while the ends of the middle end branches are W-shaped.

[0065] like Figure 5 As shown, there are six grounding plates 12, and each grounding plate has a 90° bend structure with a U-shaped fork at the end of the bend structure.

[0066] like Figure 6 As shown, the first upper magnet 3 and the second upper magnet 7 are both arch-shaped structures, while the first lower magnet 4 and the second lower magnet 8 are both cuboid structures.

[0067] like Figure 7 As shown, the cross-sections of the first leaf spring 10 and the second leaf spring 11 are both I-shaped, with rectangular through holes on both sides.

[0068] In this embodiment, the first common-mode device has a capacitance of 68nF, the second common-mode device has a capacitance of 10nF, and the third common-mode device has a capacitance of 220nF. Their grounding terminals are all connected to a grounding plate and fixed together with the mounting base to the bottom of the controller housing for grounding. This filters out low-frequency signal interference, forming a three-stage rectification. The first upper and lower magnets are made of MnZn material, which filters out intermediate-frequency signal interference. The second upper and lower magnets are made of NiZn material, which filters out high-frequency signal interference. The first differential-mode device is a 0.68uF X1 capacitor, which filters out high-frequency signal interference. After rectification by the above-mentioned current-to-motor stages, the current flowing into the motor controller is ensured to be pure and interference-free, meeting the electromagnetic compatibility requirements for vehicle use.

[0069] The specific assembly process of the filter device in this integrated mounting base is as follows:

[0070] 1. First, the positive and negative guide plates 1 and the mounting base 13 are integrally injection molded.

[0071] 2. Then, the first common-mode device 2 is fixed in the first mounting groove 101 with epoxy potting; the first upper magnet 3 is then placed upside down into the second mounting groove 102, and the first lower magnet 4 is pushed into the third mounting groove 103 and positioned therein. Then, the first upper magnet 3 is pressed against the side wall of the mounting base 13 with the first leaf spring 10; the second and third differential-mode devices are then fixed in the fifth mounting groove 105 and the eighth mounting groove 108 with epoxy potting; the first differential-mode device 5 is then fixed in the fourth mounting groove 104 with epoxy potting; the second upper magnet 7 is then placed upside down into the sixth mounting groove 106, and the second lower magnet 8 is pushed into the seventh mounting groove 107. Then, the second upper magnet 7 is pressed against the side wall of the mounting base 13 with the second leaf spring 11.

[0072] 3. Finally, the positive and negative pins of the first common-mode device, the second common-mode device, and the third common-mode device are fixedly connected to the front end, middle end, and rear end bifurcation structure of the positive and negative guide plate 1 by soldering. The positive and negative pins of the first differential-mode device 5 are fixedly connected to the middle W-shaped bifurcation structure of the positive and negative guide plate by soldering. This completes the assembly of the entire rectifier device.

[0073] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-voltage input rectifier, characterized in that, Includes mounting base (13), positive and negative guide plates (1) fixed below mounting base (13), rectifier module and grounding plate (12) fixed above mounting base (13); The positive and negative guide plates (1) include a positive guide plate and a negative guide plate. The two ends of the positive and negative guide plates (1) are flat plate structures, and the middle part is a vertical plate structure that is close to each other. The middle vertical plate of the positive and negative guide plates (1) protrudes to both sides to form through holes. The mounting base (13) is provided with a first mounting area, a second mounting area, a third mounting area, a fourth mounting area, and a fifth mounting area in sequence. The first mounting area includes two first mounting slots (101) located on both sides of the positive and negative guide plates (1); the second mounting area includes a second mounting slot (102) and a third mounting slot (103). The second mounting slot (102) is divided into two parts in the middle. The third mounting slot (103) is a cuboid space, and the bottom end of the second mounting slot (102) and the top end of the third mounting slot (103) are connected through each other; the third mounting area includes a fourth mounting slot (104) and two fifth mounting slots. The fourth mounting groove (104) is fitted with the through hole in the middle of the positive and negative guide plates (1), and the two fifth mounting grooves (105) are located on both sides of the fourth mounting groove (104); the fourth mounting area includes a sixth mounting groove (106) and a seventh mounting groove (107), the sixth mounting groove (106) is divided into two parts in the middle, the seventh mounting groove (107) is a cuboid space, and the bottom end of the sixth mounting groove (106) and the top end of the seventh mounting groove (107) are connected; the fifth mounting area includes two eighth mounting grooves (108) located on both sides of the positive and negative guide plates (1); The first mounting slot (101), the fifth mounting slot (105) and the eighth mounting slot (108) are equipped with common mode devices, the second mounting slot (102), the third mounting slot (103), the sixth mounting slot (106) and the seventh mounting slot (107) are equipped with magnet devices, and the fourth mounting slot (104) is equipped with differential mode devices.

2. The high-voltage input rectifier device according to claim 1, characterized in that, The rectifier module includes a first magnet device and a second magnet device. Both the first magnet device and the second magnet device adopt an upper and lower magnet structure. The upper and lower magnet structure includes an upper magnet and a lower magnet. The upper magnet has an arched structure. One side of the upper magnet is provided with a groove for accommodating the positive and negative guide plates (1). The lower magnet has a cuboid structure. The lower magnet cooperates with the side of the upper magnet that has the groove and closes the groove. The upper magnet of the first magnet device is installed in the second mounting slot (102) and the lower magnet is installed in the third mounting slot (103). The upper magnet of the second magnet device is installed in the sixth mounting slot (106) and the lower magnet is installed in the seventh mounting slot (107). The first magnet device and the second magnet device are both surrounding the outside of the positive and negative guide plates (1).

3. The high-voltage input rectifier device according to claim 2, characterized in that, The high-voltage input rectifier also includes a first leaf spring (10) and a second leaf spring (11). Both the first leaf spring (10) and the second leaf spring (11) adopt an I-shaped leaf spring structure. The two ends of the I-shaped leaf spring structure are elastic parts and are bent towards the same side. The first leaf spring (10) is elastically pressed to the mounting base (13), and the main body of the first leaf spring (10) is located above the first magnet device. The second leaf spring (11) is elastically pressed to the mounting base (13), and the main body of the second leaf spring (11) is located above the second magnet device.

4. A high-voltage input rectifier according to claim 3, characterized in that, The main body of the I-shaped leaf spring structure is concave relative to its two ends.

5. A high-voltage input rectifier according to claim 2, characterized in that, The rectifier module further includes a first common-mode device (2), a second common-mode device (6), and a third common-mode device (9). Each of the first common-mode device (2), the second common-mode device (6), and the third common-mode device (9) includes two parallel safety capacitors. The first common-mode device (2) is installed in the two first mounting slots (101), the second common-mode device (6) is installed in the two fifth mounting slots (105), and the third common-mode device (9) is installed in the two eighth mounting slots (108). The positive guide plate is connected to the positive pins of the first common mode device (2), the second common mode device (6), and the third common mode device (9), respectively. The negative guide plate is connected to the negative pins of the first common mode device (2), the second common mode device (6), and the third common mode device (9), respectively. The grounding plate (12) is connected to the grounding pins of the first common mode device (2), the second common mode device (6), and the third common mode device (9), respectively.

6. A high-voltage input rectifier according to claim 5, characterized in that, The rectifier module further includes a first differential device (5), which includes a high-frequency interference suppression capacitor and is installed in the fourth mounting slot (104).

7. A high-voltage input rectifier according to claim 6, characterized in that, The first common-mode device (2), the second common-mode device (6), the third common-mode device (9) and the first differential-mode device (5) are fixedly installed in the mounting base (13) by potting.

8. A high-voltage input rectifier according to claim 1, characterized in that, The grounding plate (12) includes a flat plate, a bent plate and a vertical plate connected in sequence. The flat plate is connected to the mounting base (13), and the vertical plate is used to connect the grounding pin.

9. A high-voltage input rectifier according to claim 1, characterized in that, Both the positive and negative guide plates (1) and the grounding plate (12) are provided with multiple U-shaped forked structures for connecting pins.

10. A high-voltage input rectifier according to claim 1, characterized in that, The mounting base (13) and the positive and negative guide plates (1) are an integrated plastic-coated structure.

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