A filter and rectifier device for new energy vehicles

Abstract

This invention relates to a filtration and rectification device for new energy vehicles, comprising positive and negative conductive rods, a rectifier circuit board, a rectifier ring, a grounding shield, and a rectifier base supporting the entire device. The positive and negative conductive rods pass through the interior of the rectifier ring. The rectifier circuit board has conductive claws on one side and grounding claws on the other. The rectifier circuit board is electrically connected to the positive and negative conductive plates via the conductive claws and electrically connected to the grounding shield via the grounding claws. Specifically, the rectifier circuit board includes a first-order rectifier circuit board, a third-order rectifier circuit board, and a fifth-order rectifier circuit board. The rectifier ring specifically includes a second-order rectifier ring and a fourth-order rectifier ring. Compared with existing technologies, this invention focuses on the integrated structural design of the filtration and rectification device. This device integrates multiple filtration and rectification components, replaces bolt connections with a claw-type design, and integrates a shield-type common grounding network. This results in a compact structure, easy assembly, good electromagnetic interference resistance, and suitability for automated assembly and production.

Description

Technical Field

[0001] This invention relates to the field of automotive filtration and rectification devices, and in particular to a filtration and rectification device for new energy vehicles. Background Technology

[0002] With the continuous development of the new energy vehicle industry, electric vehicles are becoming increasingly popular in households, and the safety and comfort of the vehicles are receiving more and more attention from passengers. Therefore, the suppression of electromagnetic interference at the vehicle end is also receiving more and more attention. As a core component inside new energy vehicles, the electric drive system, especially the motor controller, is a high-frequency switching device that generates electromagnetic radiation and conducted interference during actual operation. Although the controller housing is an aluminum alloy shell with good shielding effect, the current at the vehicle battery end fluctuates, and this fluctuation is conducted into the controller through the wiring harness, making it very difficult to eliminate conducted interference. Traditional methods simply add a magnetic block, a ferrite bead to the PCB, or a set of Y capacitors to solve this problem. Moreover, traditional grounding designs are all single-point grounding, which has poor grounding effect and cannot form a complete grounding network. Such operations result in fewer filtering links, larger installation volume, and more dispersed grounding, making it difficult to meet the requirements of vehicle electromagnetic compatibility performance testing. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a filter rectifier for new energy vehicles that improves grounding performance and meets the requirements of vehicle electromagnetic compatibility performance testing.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A filter and rectifier device for new energy vehicles includes positive and negative conductive rods, a rectifier circuit board, a rectifier ring, a grounding shield, and a rectifier base supporting the entire device. The positive and negative conductive rods pass through the inside of the rectifier ring. The rectifier circuit board has a conductive claw on one side and a grounding claw on the other side. The rectifier circuit board is electrically connected to the positive and negative conductive rods through the conductive claw and electrically connected to the grounding shield through the grounding claw.

[0006] Furthermore, the conductive claw is hook-shaped and matches the shape of the positive and negative conductive rods, and the conductive claw engages with the positive and negative conductive rods;

[0007] The grounding claw has an upright W-shaped structure, and the grounding shield is provided with a cylindrical grounding protrusion. The grounding claw abuts against the grounding protrusion.

[0008] Furthermore, the rectifier circuit board also includes a PCB board and a capacitor assembly. The capacitor assembly is electrically connected to the PCB board. The conductive claws and grounding claws are located on both sides of the PCB board, respectively. There are two conductive claws, which are electrically connected to the positive and negative conductive plates, respectively. There are two grounding claws, which are electrically connected to the grounding shield, respectively.

[0009] Furthermore, the number of rectifier circuit boards is three, including a first-order rectifier circuit board, a third-order rectifier circuit board, and a fifth-order rectifier circuit board. The capacitor component in the first-order rectifier circuit board is a high-frequency suppression capacitor, the capacitor component in the third-order rectifier circuit board is a mid-frequency suppression capacitor, and the capacitor component in the fifth-order rectifier circuit board is a low-frequency suppression capacitor.

[0010] Furthermore, the high-frequency suppression capacitor includes a pair of Y capacitors with a capacitance range of 2-3nF, the mid-frequency suppression capacitor includes a pair of Y capacitors with a capacitance range of 8-12nF and an X capacitor with a capacitance range of 4-6uF, and the low-frequency suppression capacitor includes a Y capacitor with a capacitance range of 65-75nF.

[0011] Furthermore, the rectifier ring includes a second-order rectifier ring and a fourth-order rectifier ring. The second-order rectifier ring is sintered from a Mn-Zn and Ni-Zn composite, and the fourth-order rectifier ring is formed by winding a nano-metal thin film.

[0012] Furthermore, the grounding shield is a rectangular sheet metal stamping part, with its upper surface being the main shield. The main shield has mounting feet at its four corners. The main shield has two circular cylindrical first-order grounding bosses and a fifth-order grounding boss stamped on its left and right sides. The main shield has a pair of third-order grounding bosses in the center. The third-order grounding bosses have four second-order fixing claws and a fourth-order fixing claw on their left and right sides, respectively. The second-order fixing claws and the fourth-order fixing claws are all stamped with tongues cut into a V-shaped structure.

[0013] The first-order grounding boss, the third-order grounding boss, and the fifth-order grounding boss respectively abut against the grounding claws in the first-order rectifier circuit board, the third-order rectifier circuit board, and the fifth-order rectifier circuit board. The four second-order fixing claws and the fourth-order fixing claws respectively abut against the second-order rectifier ring and the fourth-order rectifier ring. The mounting bracket is connected to the rectifier base.

[0014] Furthermore, the upper surface of the rectifier base has two first-stage clearance slots on the left side, and a first-stage installation space is integrated between the two first-stage clearance slots. On the right side of the first-stage clearance slots, there are two curved second-stage and fourth-stage installation spaces. Between the second-stage and fourth-stage installation spaces, there are two third-stage installation spaces. On the right side of the fourth-stage installation space, there is a fifth-stage installation space. Two fifth-stage clearance slots are integrated on both sides of the fifth-stage installation space. The rectifier base has a conductive hole running through it from left to right. Two baffles are provided on the right side of the conductive hole. Four fixing holes are provided at both ends of the rectifier base outside the conductive hole.

[0015] The second-order rectifier ring and the fourth-order rectifier ring are respectively installed in the second-order installation space and the fourth-order installation space. The positive and negative conductive rods pass through the conductive holes and abut against the baffle. The first-order rectifier circuit board, the third-order rectifier circuit board and the fifth-order rectifier circuit board are respectively installed in the first-order installation space, the third-order installation space and the fifth-order installation space. The fixing hole is connected to the grounding shield.

[0016] Furthermore, the rectifier ring is a differential mode ring, and the differential mode ring has two cylindrical mounting holes inside, through which the positive and negative conductive rods connect the two mounting holes.

[0017] Furthermore, the positive and negative conductive rods are composed of two round copper rods. The left side of the round copper rods has two semi-circular planar input terminals, and the right side of the round copper rods has two semi-circular planar output terminals.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) The filter rectifier for new energy vehicles provided by the present invention integrates conductive claws and grounding claws on the rectifier circuit board. The conductive claws abut against the positive and negative conductive rods to achieve contact electrical connection, replacing the traditional single-point connection using welding fixation with multi-point contact. At the same time, the grounding claws abut against the grounding shield to achieve grounding of the rectifier current board, forming a whole grounding network, replacing the traditional bolt-fixed single-point grounding method with poor effect.

[0020] (2) Two sets of fixing claws are integrated on the grounding shield to press on the second and fourth order rectifier rings, constraining and fixing the differential mode rectifier rings to prevent axial movement. Except for the four mounting bolts of the grounding shield, the entire rectifier filter is electrically connected and fixed by claws, which reduces the use of bolts, replaces the welding process, reduces the assembly difficulty, and is more suitable for mass production.

[0021] (3) The present invention integrates a grounding shield above the entire filter rectifier for new energy vehicles, realizing the network-type common grounding design requirements of multi-stage filter devices and forming a networked full-coverage grounding shield; at the same time, the structure of the shield reduces the electromagnetic coupling interference between the filter rectifier and the external environment, and while realizing the function of rectification and wave passing, it also purifies the electromagnetic environment of the surrounding space.

[0022] (4) The present invention integrates a five-level rectifier filter device, wherein the first-order rectifier circuit board integrates a pair of 2.3nF Y capacitors, the third-order rectifier circuit board integrates a pair of 10nF Y capacitors and a 5uF X capacitor, and the fifth-order rectifier circuit board integrates a pair of 68nF Y capacitors. Two differential mode rectifier rings are connected in series between the three-level rectifier circuit boards, so that the entire filter rectifier device has good anti-electromagnetic interference performance and can meet the usage requirements in the complex electromagnetic environment of the vehicle. Attached Figure Description

[0023] Figure 1 This is an exploded view of the structure of a filter rectifier device for new energy vehicles provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a rectifier holder structure provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a positive and negative conductive rod structure provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of a first-order rectifier circuit board structure provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of a second-order rectifier ring structure provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of a third-order rectifier circuit board structure provided in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of a grounding shield structure provided in an embodiment of the present invention;

[0030] In the diagram: 1. Rectifier base; 2. Positive and negative conductive rods; 3. First-order rectifier circuit board; 4. Second-order rectifier ring; 5. Third-order rectifier circuit board; 6. Fourth-order rectifier ring; 7. Fifth-order rectifier circuit board; 8. Grounding shield; 1-1. Conductive hole; 1-2. First-order mounting space; 1-3. First-order clearance slot; 1-4. Second-order mounting space; 1-5. Third-order mounting space; 1-6. Fourth-order mounting space; 1-7. Fifth-order mounting space; 1-8. Fifth-order clearance slot; 1-9. Baffle; 1-10. Fixing hole; 2-1. Round copper rod; 2-2. Input terminal; 2-3. Output. Terminals, 3-1, First-order PCB board, 3-2, First-order Y capacitor, 3-3, First-order conductive claw, 3-4, First-order grounding claw, 4-1, Second-order differential mode ring, 4-2, Second-order mounting hole, 5-1, Third-order PCB board, 5-2, Third-order X capacitor, 5-3, Third-order Y capacitor, 5-4, Third-order conductive claw, 5-5, Third-order grounding claw, 8-1, Main shielding cover, 8-2, First-order grounding boss, 8-3, Fifth-order grounding boss, 8-4, Second-order fixing claw, 8-5, Fourth-order fixing claw, 8-6, Third-order grounding boss, 8-7, Limiting groove, 8-8, Mounting support. Detailed Implementation

[0031] 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 components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] 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.

[0033] 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.

[0034] 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 product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, and do not 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.

[0035] 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.

[0036] 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.

[0037] Example 1

[0038] This embodiment provides a filter rectifier for new energy vehicles, including positive and negative conductive rods 2, a rectifier circuit board, a rectifier ring, a grounding shield 8, and a rectifier base 1 supporting the entire device. The positive and negative conductive rods 2 pass through the inside of the rectifier ring. The rectifier circuit board has a conductive claw on one side and a grounding claw on the other side. The rectifier circuit board is electrically connected to the positive and negative conductive rods 2 through the conductive claw and electrically connected to the grounding shield 8 through the grounding claw.

[0039] Specifically, the rectifier circuit board includes a PCB board, a capacitor assembly, conductive claws, and a grounding claw. The capacitor assembly is electrically connected to the PCB board. The conductive claws and grounding claws are located on both sides of the PCB board. There are two conductive claws, which are electrically connected to the positive and negative conductive plates respectively. There are two grounding claws, which are electrically connected to the grounding shield respectively.

[0040] In this embodiment, the conductive claw is hook-shaped and matches the shape of the positive and negative conductive rods 2, and the conductive claw engages with the positive and negative conductive rods 2.

[0041] The grounding claw has an upright W-shaped structure, and the grounding shield 8 is provided with a cylindrical grounding boss, with the grounding claw abutting against the grounding boss.

[0042] The rectifier ring is a differential mode ring, with two cylindrical mounting holes inside. Positive and negative conductive rods 2 pass through and connect the two mounting holes. The positive and negative conductive rods 2 are composed of two round copper rods 2-1.

[0043] Electrical contact is achieved by using conductive claws to press against positive and negative conductive rods, replacing the traditional single-point connection that uses welding for fixing with multi-point contact. At the same time, the rectifier current board is grounded by using grounding claws to press against the grounding shield, forming a complete grounding network, which replaces the poor grounding effect of the traditional single-point grounding method with bolt fixing.

[0044] To ensure the entire filter and rectifier device exhibits good electromagnetic interference resistance and meets the requirements for use in the complex electromagnetic environment of a vehicle, a preferred embodiment includes three rectifier circuit boards: a first-order rectifier circuit board 3, a third-order rectifier circuit board 5, and a fifth-order rectifier circuit board 7. The capacitor components in the first-order rectifier circuit board 3 are high-frequency suppression capacitors, the capacitor components in the third-order rectifier circuit board 5 are mid-frequency suppression capacitors, and the capacitor components in the fifth-order rectifier circuit board 7 are low-frequency suppression capacitors. The rectifier rings include a second-order rectifier ring 4 and a fourth-order rectifier ring 6.

[0045] Specifically, the high-frequency suppression capacitor includes a pair of Y capacitors with a capacitance range of 2-3nF, the mid-frequency suppression capacitor includes a pair of Y capacitors with a capacitance range of 8-12nF and an X capacitor with a capacitance range of 4-6uF, and the low-frequency suppression capacitor includes a Y capacitor with a capacitance range of 65-75nF.

[0046] Preferably, the high-frequency suppression capacitor includes a pair of Y capacitors with a capacitance of 2.3nF, the mid-frequency suppression capacitor includes a pair of Y capacitors with a capacitance of 10nF and an X capacitor with a capacitance of 5uF, and the low-frequency suppression capacitor includes a Y capacitor with a capacitance of 68nF. The second-order rectifier ring 4 is sintered from a Mn-Zn and Ni-Zn composite, and the fourth-order rectifier ring 6 is formed by winding a nano-metal thin film.

[0047] This embodiment integrates multiple filtering and rectifying devices, while distributing filters on the PCB board and connecting all grounding points into a single grounding network. Through these measures, the current from the vehicle battery passes through multiple filters before entering the controller, which can quickly eliminate conducted and radiated interference, thereby improving the controller's consistent performance and meeting the higher noise level testing requirements of the vehicle.

[0048] By combining the above preferred embodiments in any way, better embodiments can be obtained. The following is a detailed description of one of the best embodiments.

[0049] A filter and rectifier device for new energy vehicles includes a rectifier base 1, positive and negative conductive rods 2, a first-order rectifier circuit board 3, a second-order rectifier ring 4, a third-order rectifier circuit board 5, a fourth-order rectifier ring 6, a fifth-order rectifier circuit board 7, and a grounding shield 8. The second-order rectifier ring 4 is fixed within the second-order mounting space 1-4 of the rectifier base 1, and the fourth-order rectifier ring 6 is fixed within the fourth-order mounting space 1-6 of the rectifier base 1. The second-order fixing claws 8-4 and 8-5 of the grounding shield 8 press against the upper surfaces of the second-order rectifier ring 4 and the fourth-order rectifier ring 6, respectively. The positive and negative conductive rods 2 pass through the conductive holes 1-1 of the rectifier base 1, the second-order mounting holes 4-2 of the second-order rectifier ring 4, and the fourth-order mounting holes of the fourth-order rectifier ring 6. The first-order rectifier... Circuit board 3 is placed above the first-order clearance slot 1-3, third-order rectifier circuit board 5 is placed above the third-order installation space 1-5, fifth-order rectifier circuit board 7 is placed above the fifth-order clearance slot 1-8, and grounding shield 8 is fixed directly above rectifier base 1. The first, third, and fifth-order rectifier circuit boards are electrically connected to the positive and negative conductive rods 2 through first, third, and fifth-order conductive claws, respectively. The first, third, and fifth-order rectifier circuit boards are electrically connected to the grounding shield 8 through first, third, and fifth-order grounding claws, respectively.

[0050] like Figure 2 As shown, the rectifier base 1 has a rectangular parallelepiped structure, which integrates a conductive hole 1-1, a first-stage mounting space 1-2, a first-stage clearance groove 1-3, a second-stage mounting space 1-4, a third-stage mounting space 1-5, a fourth-stage mounting space 1-6, a fifth-stage mounting space 1-7, a fifth-stage clearance groove 1-8, a baffle 1-9, and a fixing hole 1-10. The conductive hole 1-1 runs through the rectifier base 1 from left to right, and there are two baffles 1-9 on the right side of the conductive hole 1-1. The upper surface of the rectifier base 1 has two first-stage clearance slots 1-3 on the left side, and a first-stage installation space 1-2 is integrated between the two first-stage clearance slots 1-3. On the right side of the first-stage clearance slots 1-3, there are two bathtub-shaped second-stage installation spaces 1-4 and fourth-stage installation spaces 1-6. Between the second-stage installation spaces 1-4 and fourth-stage installation spaces 1-6, there are two third-stage installation spaces 1-5. On the right side of the fourth-stage installation space 1-6, there is a fifth-stage installation space 1-7. Two fifth-stage clearance slots 1-8 are integrated on both sides of the fifth-stage installation space 1-7. At both ends of the rectifier base 1, outside the conductive hole 1-1, there are four fixing holes 1-10.

[0051] like Figure 3 As shown, the positive and negative conductive rods 2 are composed of two round copper rods 2-1. There are two semi-circular flat input terminals 2-2 on the left side of the round copper rods 2-1, and two semi-circular flat output terminals 2-3 on the right side of the round copper rods 2-2. There are a total of four threaded holes integrated on the input terminals 2-2 and the output terminals 2-3.

[0052] like Figure 4As shown, the first-order rectifier circuit board 3 integrates a first-order PCB board 3-1, a first-order Y capacitor 3-2, a first-order conductive claw 3-3, and a first-order grounding claw 3-4. The first-order Y capacitor 3-2 is located in the center of the lower end face of the first-order PCB board, the first-order conductive claws are located on both sides of the Y capacitor 3-2, and the first-order grounding claws 3-4 are symmetrically arranged on the upper surface of the first-order PCB board 3-1. The first-order PCB board 3-1 has a rectangular structure, the first-order conductive claw 3-3 is hook-shaped, and the first-order grounding claw 3-4 has a vertical W-shaped structure. The Y capacitor 3-2, the first-order conductive claw 3-3, and the first-order grounding claw 3-4 are electrically connected to each other by soldering with the first-order PCB board.

[0053] like Figure 5 As shown, the second-order rectifier ring 4 is a second-order differential mode ring 4-1 with a waist-shaped boss structure. The second-order differential mode ring 4-1 has two cylindrical second-order mounting holes 4-2 inside. The second-order mounting holes 4-2 are mechanically connected to the positive and negative conductive rods 2 through a transition fit.

[0054] like Figure 6 As shown, the third-order rectifier circuit board 5 integrates a third-order PCB board 5-1, a third-order X capacitor 5-2, a third-order Y capacitor 5-3, a third-order conductive claw 5-4, and a third-order grounding claw 5-5. The third-order PCB board 5-1 is a rectangular plate structure, the third-order conductive claw 5-4 is hook-shaped, and the third-order grounding claw 5-5 is a vertical W-shaped structure. The third-order X capacitor 5-2 is located in the center of the upper surface of the third-order PCB board 5-1, the third-order grounding claw 5-5 is located on both sides of the third-order X capacitor 5-2, the third-order Y capacitor 5-3 is symmetrically arranged on the lower surface of the third-order PCB board 5-1, and the third-order conductive claw 5-4 is located in the middle of the third-order Y capacitor 5-3. The third-order conductive claw 5-4 and the third-order grounding claw 5-5 are electrically connected to the third-order X capacitor 5-2 and the third-order Y capacitor 5-3 by soldering to the third-order PCB board 5-1.

[0055] like Figure 7 As shown, the grounding shield 8 is a rectangular sheet metal stamping part. Its upper surface is the main shield 8-1. The main shield 8-1 has mounting feet 8-8 at the four corners. The main shield 8-1 has two circular cylindrical first-stage grounding bosses 8-2 and fifth-stage grounding bosses 8-3 stamped on the left and right sides. The main shield 8-1 has a pair of third-stage grounding bosses 8-6 in the center. There is a rectangular limiting groove 8-7 between the third-stage grounding bosses 8-6. The third-stage grounding bosses 8-6 have four second-stage fixing claws 8-4 and fourth-stage fixing claws 8-5 on the left and right sides respectively. The second-stage fixing claws 8-4 and fourth-stage fixing claws 8-5 are stamped and cut into V-shaped structures.

[0056] The specific assembly process in this embodiment is as follows:

[0057] First, install the second-order rectifier ring 4 and the fourth-order rectifier ring 6. Place the second-order rectifier ring 4 and the fourth-order rectifier ring 6 into the second-order mounting space 1-4 and the fourth-order mounting space 1-6 of the rectifier base 1, respectively. Then, insert the positive and negative conductive rods 2 into the conductive holes 1-1 from the left end face of the rectifier base 1, and pass them sequentially through the second-order mounting holes 4-2 of the second-order rectifier ring 4 and the fourth-order mounting holes of the fourth-order rectifier ring 6, until one end of the positive and negative conductive rods 2 abuts against the baffle 1-9 of the rectifier base 1.

[0058] Next, assemble the first-order rectifier circuit board 3, the third-order rectifier circuit board 5, and the fifth-order rectifier circuit board 7. Electrically connect the terminals of the first-order Y capacitor 3-2 to the first-order PCB board 3-1 via soldering, and then electrically connect the first-order conductive claw 3-3 and the first-order grounding claw 3-4 to the first-order PCB board 3-1 via soldering. Assemble the third-order rectifier circuit board 5 and the fifth-order rectifier circuit board 7 in the same manner.

[0059] Next, install the first-order rectifier circuit board 3, the third-order rectifier circuit board 5, and the fifth-order rectifier circuit board 7. Place the first-order Y capacitor 3-2 of the first-order rectifier circuit board 3 in the first-order mounting space 1-2 of the rectifier base 1, and press the two first-order conductive claws 3-3 onto the two-phase round copper rods 2-1 of the positive and negative conductive rods 2, respectively. Assemble the fifth-order rectifier circuit 7 onto the rectifier base 1 in the same manner. Then, place the third-order Y capacitor 5-3 of the third-order rectifier circuit board 5 in the third-order mounting space 1-5 of the rectifier base 1, and press the third-order conductive claws 5-4 onto the two-phase round copper rods 2-1 of the positive and negative conductive rods 2, respectively.

[0060] Finally, install the grounding shield. Place the grounding shield 8 on top of the rectifier base 1, so that the first-order grounding claw 3-4 of the first-order rectifier circuit board 3 abuts against the first-order grounding boss 8-2, and the fifth-order grounding claw of the fifth-order rectifier circuit board 7 abuts against the fifth-order grounding boss 8-3. Simultaneously, the third-order X capacitor of the third-order rectifier circuit board 5 is embedded in the limiting groove 8-7 of the grounding shield 8, and the third-order grounding claw 5-5 abuts against the third-order grounding boss 8-6 of the grounding shield 8. At the same time, the second-order fixing claw 8-4 and the fourth-order fixing claw 8-5 of the grounding shield 8 respectively press against the second-order rectifier ring 4 and the fourth-order rectifier ring. Then, mechanically connect the four legs 8-8 of the grounding shield 8 to the four fixing holes 1-10 of the rectifier base 1 using bolts.

[0061] Thus, the assembly of a new energy vehicle filter rectifier device according to this embodiment is complete.

[0062] 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 filter rectifier device for new energy vehicles, characterized in that, The device includes positive and negative conductive rods (2), a rectifier circuit board, a rectifier ring, a grounding shield (8), and a rectifier base (1) that supports the entire device. The positive and negative conductive rods (2) pass through the inside of the rectifier ring. The rectifier circuit board has a conductive claw on one side and a grounding claw on the other side. The rectifier circuit board is electrically connected to the positive and negative conductive rods (2) through the conductive claw and electrically connected to the grounding shield (8) through the grounding claw. The conductive claw is hook-shaped and matches the shape of the positive and negative conductive rods (2). The conductive claw engages with the positive and negative conductive rods (2). The grounding claw is a vertical W-shaped structure, and the grounding shield (8) is provided with a cylindrical grounding boss, and the grounding claw abuts against the grounding boss; The rectifier circuit board also includes a PCB board and a capacitor assembly. The capacitor assembly is electrically connected to the PCB board. The conductive claw and the grounding claw are located on both sides of the PCB board. There are two conductive claws, which are electrically connected to the positive and negative conductive rods (2) respectively. There are two grounding claws, which are electrically connected to the grounding shield respectively. 2.The filtering and rectifying device for new energy vehicles according to claim 1, characterized in that, The number of rectifier circuit boards is three, including a first-order rectifier circuit board (3), a third-order rectifier circuit board (5) and a fifth-order rectifier circuit board (7). The capacitor component in the first-order rectifier circuit board (3) is a high-frequency suppression capacitor, the capacitor component in the third-order rectifier circuit board (5) is a mid-frequency suppression capacitor, and the capacitor component in the fifth-order rectifier circuit board (7) is a low-frequency suppression capacitor.

3. A filter and rectifier device for new energy vehicles according to claim 2, characterized in that, The high-frequency suppression capacitor includes a pair of Y capacitors with a capacitance range of 2-3nF, the mid-frequency suppression capacitor includes a pair of Y capacitors with a capacitance range of 8-12nF and an X capacitor with a capacitance range of 4-6uF, and the low-frequency suppression capacitor includes a Y capacitor with a capacitance range of 65-75nF.

4. A filter and rectifier device for new energy vehicles according to claim 2, characterized in that, The rectifier ring includes a second-order rectifier ring (4) and a fourth-order rectifier ring (6). The second-order rectifier ring (4) is formed by sintering Mn-Zn and Ni-Zn composites, and the fourth-order rectifier ring (6) is formed by winding nano-metal thin films.

5. A filter and rectifier device for new energy vehicles according to claim 4, characterized in that, The grounding shield (8) is a rectangular sheet metal stamping part, with the upper surface being the main shield (8-1). The main shield (8-1) has mounting feet (8-8) at its four corners. The main shield (8-1) has two circular columnar first-order grounding bosses (8-2) and fifth-order grounding bosses (8-3) stamped on its left and right sides. The main shield (8-1) has a pair of third-order grounding bosses (8-6) in the center. The third-order grounding bosses (8-6) have four second-order fixing claws (8-4) and fourth-order fixing claws (8-5) on their left and right sides respectively. The second-order fixing claws (8-4) and fourth-order fixing claws (8-5) are both stamped and cut into V-shaped structures. The first-order grounding boss (8-2), the third-order grounding boss (8-6), and the fifth-order grounding boss (8-3) respectively abut against the grounding claws in the first-order rectifier circuit board (3), the third-order rectifier circuit board (5), and the fifth-order rectifier circuit board (7). The four second-order fixing claws (8-4) and the fourth-order fixing claws (8-5) respectively abut against the second-order rectifier ring (4) and the fourth-order rectifier ring (6). The mounting bracket (8-8) is connected to the rectifier base (1).

6. A filter and rectifier device for new energy vehicles according to claim 4, characterized in that, The rectifier base (1) has two first-stage clearance slots (1-3) on the left side of its upper surface. A first-stage installation space (1-2) is integrated between the two first-stage clearance slots (1-3). Two curved second-stage installation spaces (1-4) and a fourth-stage installation space (1-6) are provided on the right side of the first-stage clearance slots (1-3). Two third-stage installation spaces (1-5) are provided between the second-stage installation spaces (1-4) and the fourth-stage installation spaces (1-6). A fifth-stage installation space (1-7) is provided on the right side of the fourth-stage installation space (1-6). Two fifth-stage clearance slots (1-8) are integrated on both sides of the fifth-stage installation space (1-7). A conductive hole (1-1) runs through the rectifier base (1) from left to right. Two baffles (1-9) are provided on the right side of the conductive hole (1-1). Four fixing holes (1-10) are provided at both ends of the rectifier base (1) outside the conductive hole (1-1). The second-order rectifier ring (4) and the fourth-order rectifier ring (6) are respectively installed in the second-order installation space (1-4) and the fourth-order installation space (1-6). The positive and negative conductive rods (2) pass through the conductive hole (1-1) and abut against the baffle (1-9). The first-order rectifier circuit board (3), the third-order rectifier circuit board (5) and the fifth-order rectifier circuit board (7) are respectively installed in the first-order installation space (1-2), the third-order installation space (1-5) and the fifth-order installation space (1-7). The fixing hole (1-10) is connected to the grounding shield (8).

7. A filter and rectifier device for new energy vehicles according to claim 1, characterized in that, The rectifier ring is a differential mode ring, and the differential mode ring has two cylindrical mounting holes inside, through which the positive and negative conductive rods (2) connect the two mounting holes.

8. A filter and rectifier device for new energy vehicles according to claim 1, characterized in that, The positive and negative conductive rods (2) are composed of two round copper rods (2-1). The round copper rods (2-1) have two semi-circular flat input terminals (2-2) on the left side and two semi-circular flat output terminals (2-3) on the right side.

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