An integrated double-filter thin-film capacitor assembly based on new energy vehicles

Abstract

The application relates to the technical field of capacitors, in particular to an integrated double-filter thin-film capacitor assembly based on a new energy automobile, which comprises a busbar plate, a connecting part is fixedly installed on the busbar plate, a mounting frame is installed on the connecting part, a first filter is installed on one side of the mounting frame, and a plugging block is installed between the first filter and the mounting frame. The capacitor assembly provided by the application adopts an integrated double-filter structure, can perform twice filtering treatment on the current in a circuit, can more effectively remove the noise and interference signals in the circuit, improves the stability and reliability of a new energy automobile circuit system, the product adopts double-nanocrystal secondary filtering effect, comprehensively realizes noise reduction in a wide frequency range through the magnetic core efficiency, helps to reduce the number of stages, has obvious advantages in the scene of pursuing miniaturization, light weight and complexity temperature, and has the characteristics of strong anti-magnetic interference ability, improved magnetic core efficiency, high stability, high temperature resistance and low energy consumption.

Description

Technical Field

[0001] This invention relates to the field of capacitor technology, and more specifically, to an integrated dual-filter thin-film capacitor assembly for new energy vehicles. Background Technology

[0002] For capacitors used in new energy vehicles, a filter is usually added to the controller to suppress high-frequency harmonics of the inverter and reduce bus voltage fluctuations. Dual-filter integrated capacitors have good high-frequency characteristics, lower coercivity and loss, and can eliminate interference and noise, making power transmission smoother and more stable, while saving internal space in the controller and reducing costs.

[0003] With the widespread application of new energy vehicles, the performance requirements of their circuit systems for capacitor components are becoming increasingly stringent. Traditional capacitor components may suffer from problems such as poor filtering effect, insufficient compactness, and inconvenient installation, failing to meet the growing demands of new energy vehicle circuit systems. Therefore, integrated dual-filter thin-film capacitor components are needed to solve this problem. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated dual-filter thin-film capacitor assembly for new energy vehicles, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated dual-filter thin-film capacitor assembly for new energy vehicles, comprising a busbar, a connecting part fixedly mounted on the busbar, a mounting bracket mounted on the connecting part, a first filter mounted on one side of the mounting bracket, a sealing block mounted between the first filter and the mounting bracket, a second filter connected to one side of the first filter, a second sealing block mounted on the side of the second filter away from the first filter, a core mounted on the busbar, positive and negative copper busbar ripple terminals mounted on one side of the busbar, and electrical pins for electrical connection with external circuits mounted on the positive and negative copper busbar ripple terminals.

[0006] As a preferred embodiment of the present invention, the first filter and the second filter are respectively composed of an upper housing and a lower housing. An insulating paper, a positive busbar and a negative busbar are arranged sequentially from top to bottom between the upper housing and the lower housing. The insulating paper, the positive busbar and the negative busbar are on the same vertical straight line.

[0007] As a preferred embodiment of the present invention, a core assembly is installed at the bottom end of the negative busbar, and the core assembly is a type of ferrite.

[0008] As a preferred embodiment of the present invention, the bottom end of the core assembly is provided with epoxy resin, the bottom end of the epoxy resin is provided with an insulating shell, and the insulating shell is attached to the lower housing.

[0009] As a preferred embodiment of the present invention, multiple grounding bolts are installed on both the first filter and the second filter, and the upper and lower housings of the first filter and the second filter are connected by grounding bolts.

[0010] As a preferred embodiment of the present invention, the busbar plate is equipped with multiple positioning frames, and the busbar plate is locked by bolts passing through the positioning frames.

[0011] As a preferred embodiment of the present invention, the core is welded to the busbar plate, and the cores are all located in the slots opened on the busbar plate, and the multiple cores on the busbar plate form a capacitor.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) This invention is an integrated dual-filter thin-film capacitor assembly based on new energy vehicles. The capacitor assembly set in this invention adopts an integrated dual-filter structure, namely a first filter and a second filter, which can filter the current in the circuit twice, and can more effectively remove noise and interference signals in the circuit, improve the stability and reliability of the circuit system of new energy vehicles. The product adopts the dual nanocrystal two-stage filtering effect, which combines its magnetic core efficiency to achieve noise reduction in a wide frequency range, which helps to reduce the number of stages. It has significant advantages in scenarios that pursue miniaturization, lightweighting, and complex temperature. The breakthrough in materials has the characteristics of strong anti-magnetic interference ability, improved magnetic core efficiency, high stability, high temperature resistance, and low energy consumption.

[0014] (2) This invention is an integrated dual-filter thin-film capacitor assembly for new energy vehicles. The capacitor assembly busbar is locked in place using a positioning bracket and bolts. The upper and lower housings of the filter are connected by grounding bolts. The installation of each component is simple, facilitating assembly and disassembly, and reducing the difficulty of installation and maintenance. The use of insulating paper and an insulating shell within the filter effectively prevents current leakage and improves the safety of the capacitor assembly. Simultaneously, the grounding bolts conduct excess charge to the ground, further enhancing safety.

[0015] (3) This invention is an integrated dual-filter thin-film capacitor assembly based on new energy vehicles. The capacitor assembly of this invention integrates dual nanocrystal filters, capacitor and controller housing into an integrated capacitor without changing the original external size, which ensures that the product can adapt to places with large voltage and current fluctuations. The integration of dual filters, capacitor and controller housing can reduce the AC component in the input pulsating DC voltage, retain the DC component, enhance the heat dissipation of the capacitor core, make the input and output current and voltage of the capacitor more stable, the heat dissipation effect more ideal, and the application range more extensive. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an integrated dual-filter thin-film capacitor assembly based on a new energy vehicle according to an embodiment of the present invention;

[0018] Figure 2 This is a plan view of an integrated dual-filter thin-film capacitor assembly based on a new energy vehicle according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of an integrated dual-filter thin-film capacitor module filter based on a new energy vehicle according to an embodiment of the present invention.

[0020] Figure label:

[0021] 1. Connecting part; 2. Mounting bracket; 3. Busbar board; 4. Positioning bracket; 5. Positive and negative copper busbar corrugated ends; 6. Slot; 7. Core; 8. Electrode needle; 9. First filter; 10. Second filter; 11. Grounding bolt; 12. Sealing block; 13. Upper shell; 14. Insulating paper; 15. Positive busbar; 16. Negative busbar; 17. Core assembly; 18. Epoxy resin; 19. Insulating shell; 20. Lower shell. Detailed Implementation

[0022] The invention will now be further described with reference to the accompanying drawings and specific embodiments:

[0023] Example 1

[0024] refer to Figures 1 to 2Embodiment 1 describes a busbar 3, on which a connecting part 1 is fixedly mounted. A mounting bracket 2 is mounted on the connecting part 1. A first filter 9 is mounted on one side of the mounting bracket 2. A blocking block 12 is installed between the first filter 9 and the mounting bracket 2. A second filter 10 is connected to one side of the first filter 9. A second blocking block 12 is installed on the side of the second filter 10 away from the first filter 9. The second filter adopts a similar structure and principle to the first filter, further filtering the current. Through this second filtering, the current can be... The first step removes noise and interference signals that the first filter could not completely filter out, making the output current purer. A core 7 is installed at the busbar 3. Positive and negative copper bus ripple ends 5 are installed on one side of the busbar 3. Electric needles 8 that are electrically connected to the external circuit are installed on the positive and negative copper bus ripple ends 5. Multiple positioning frames 4 are installed on the busbar 3, and the busbar 3 is locked by bolts through the positioning frames 4. The core 7 is welded to the busbar 3. The core 7 is located at the slot 6 opened on the busbar 3, and the multiple cores 7 on the busbar 3 form a capacitor.

[0025] In this embodiment, the positive and negative copper busbars of the busbar 3 are responsible for transmitting current, while the power-on pin 8 serves as a connection point to reliably connect the capacitor assembly to other electrical equipment (such as power supplies and loads), ensuring that the current can flow smoothly throughout the circuit and enabling the capacitor assembly to work normally. The capacitor assembly is connected to the rectifier and inverter equipment through the power-on pin 8 to realize the storage and release of electrical energy. The ripple terminals 5 of the positive and negative copper busbars establish a stable electrical connection between the capacitor assembly and the external circuit. They can be easily connected to other electrical components (such as power supplies, loads, and switches) to form a complete circuit system. Through this connection, the capacitor assembly can play its due role in the circuit, such as filtering and energy storage.

[0026] Example 2

[0027] refer to Figures 2 to 3 Example 2 further illustrates Example 1. The first filter 9 and the second filter 10 are respectively composed of an upper housing 13 and a lower housing 20. From top to bottom, insulating paper 14, a positive busbar 15, and a negative busbar 16 are sequentially arranged between the upper housing 13 and the lower housing 20. The insulating paper 14, positive busbar 15, and negative busbar 16 are on the same vertical line. A core assembly 17 is installed at the bottom of the negative busbar 16. The core assembly 17 is a type of ferrite. An epoxy resin 18 is provided at the bottom of the core assembly 17. An insulating shell 19 is provided at the bottom of the epoxy resin 18 and is attached to the lower housing 20. Multiple grounding bolts 11 are installed on both the first filter 9 and the second filter 10. The upper housing 13 and the lower housing 20 of both the first filter 9 and the second filter 10 are connected by the grounding bolts 11.

[0028] In this embodiment, the core assembly 17 has the characteristic of impeding current changes. For high-frequency signals, the inductor exhibits high impedance. When a signal containing high-frequency interference passes through the inductor filter core assembly 17, the high-frequency components will be greatly impeded and thus suppressed, while low-frequency signals or DC signals can pass relatively smoothly. The various parts of this component cooperate with each other. The capacitor is responsible for stabilizing the voltage, the dual filters are responsible for removing noise and interference signals, and the grounding bolt ensures safety. Through this cooperative work, the component can provide a stable and clean current for the circuit system of new energy vehicles, improving the performance and reliability of the entire circuit system.

[0029] In practical applications, when this invention is used in the circuit system of a new energy vehicle, the external circuit is connected to the positive and negative copper busbar ripple terminals 5 via electrode pins 8. Current flows through the capacitor formed by the busbar plate 3 and the core 7. The first filter 9 and the second filter 10 filter the current in the circuit, removing noise and interference signals, thus improving the stability and reliability of the circuit. When the circuit system of the new energy vehicle starts working, the external current enters the component through the electrode pins 8 on the positive and negative copper busbar ripple terminals 5. The electrode pins 8, as the electrical connection point with the external circuit, introduce current into the busbar plate 3. The busbar plate 3 plays a role in current distribution and conduction, evenly transmitting the current to the core 7 welded to it. This component is mainly used in the circuit system of new energy vehicles. Its core function is to filter the current in the circuit, removing noise and interference signals, while simultaneously using capacitors to store and release electrical energy to ensure stable circuit operation.

[0030] In the description of this invention, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "rear," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated dual-filter thin-film capacitor assembly based on new energy vehicles, characterized in that, The system includes a busbar (3), on which a connecting part (1) is fixedly installed. A mounting bracket (2) is installed on the connecting part (1). A first filter (9) is installed on one side of the mounting bracket (2). A blocking block (12) is installed between the first filter (9) and the mounting bracket (2). A second filter (10) is connected to one side of the first filter (9). A second blocking block (12) is installed on the side of the second filter (10) away from the first filter (9). A core (7) is installed on the busbar (3). Positive and negative copper busbar ripple ends (5) are installed on one side of the busbar (3). An electric needle (8) for electrical connection with an external circuit is installed on the positive and negative copper busbar ripple ends (5).

2. The integrated dual-filter thin-film capacitor assembly based on new energy vehicles according to claim 1, characterized in that, The first filter (9) and the second filter (10) are respectively composed of an upper housing (13) and a lower housing (20). The upper housing (13) and the lower housing (20) are provided with insulating paper (14), a positive busbar (15) and a negative busbar (16) from top to bottom. The insulating paper (14), the positive busbar (15) and the negative busbar (16) are on the same vertical straight line.

3. The integrated dual-filter thin-film capacitor assembly based on new energy vehicles according to claim 2, characterized in that, The negative busbar (16) is equipped with a core assembly (17) at its bottom end, and the core assembly (17) is a type of ferrite.

4. The integrated dual-filter thin-film capacitor assembly based on new energy vehicles according to claim 2, characterized in that, The core assembly (17) has an epoxy resin (18) at its bottom end, and an insulating shell (19) is provided at the bottom end of the epoxy resin (18), and the insulating shell (19) is attached to the lower shell (20).

5. The integrated dual-filter thin-film capacitor assembly based on new energy vehicles according to claim 2, characterized in that, Multiple grounding bolts (11) are installed on both the first filter (9) and the second filter (10). The upper housing (13) and the lower housing (20) on the first filter (9) and the second filter (10) are connected by grounding bolts (11).

6. The integrated dual-filter thin-film capacitor assembly based on new energy vehicles according to claim 1, characterized in that, The motherboard plate (3) is equipped with multiple positioning frames (4), and the motherboard plate (3) is locked by bolts through the positioning frames (4).

7. The integrated dual-filter thin-film capacitor assembly based on new energy vehicles according to claim 1, characterized in that, The core (7) is welded to the busbar plate (3). The core (7) is located at the slot (6) opened on the busbar plate (3), and the multiple cores (7) on the busbar plate (3) form a capacitor.

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