Compact new energy thermal management filter

Abstract

The utility model discloses a compact new energy thermal management filter. The compact new energy thermal management filter comprises a plastic housing, a Y2 capacitor, a DC support capacitor, a common mode inductor and a flexible PCB. A mounting groove is formed in the plastic shell, and a direct current support capacitor, a Y2 capacitor and a common mode inductor are arranged in the mounting groove; a plurality of connecting copper sheets are arranged on the plastic shell, the direct-current supporting capacitor and the common-mode inductor are connected through the connecting copper sheets, a plurality of side edge parts are outwards arranged on the plastic shell along the mounting groove, and the flexible PCBs are arranged on the side edge parts. The filter provided by the utility model has the following advantages: 1, the electronic components are reasonably arranged in the mounting groove of the plastic shell, so that the size of the filter is further reduced; 2, the connection copper sheet is adopted to ensure that the internal resistance of the capacitor is lower, the contact is good, and the vibration resistance is good; and 3, the capacitor is made of a metallized high-temperature film with the temperature of more than 120 DEG C, and the inductor is designed by adopting a nanocrystalline material, so that the capacitor can stably work for a long time under high-temperature and low-temperature occasions.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, especially in a kind of compact new energy thermal management filter. BACKGROUND

[0002] With the development of new energy automobile industry, the popularity of automobile consumer electronics products, power grid noise interference is increasingly serious, especially patrol noise source, microcomputer and digital circuit produce serious interference;Therefore, in actual design, it needs to increase filter to suppress electromagnetic interference.

[0003] New energy automobile thermal management system is including battery thermal management+car air conditioning system+electric drive and electronic power piece cooling system etc. one big unified concept;Since new energy automobile has higher requirements to product's high and low temperature, shock resistance and size etc., traditional filter is relatively larger in size, and shock resistance and high and low temperature resistance cannot satisfy the use requirement of filter in new energy field.

[0004] Therefore, according to market demand, a filter with small size, good shock resistance and adaptability to high and low temperature environment is needed to meet the needs of customers. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of compact new energy thermal management filter, the electronic components of filter are compactly arranged in shell, and the size of filter is further reduced.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a kind of compact new energy thermal management filter, comprising: plastic shell, Y2 electric capacity, direct current support capacitor, common mode inductance and flexible PCB board;The plastic shell is provided with installation groove, and the installation groove is provided with direct current support capacitor, Y2 electric capacity and common mode inductance;A plurality of connecting copper sheets are provided on the plastic shell, and the plurality of connecting copper sheets are connected with the direct current support capacitor and the common mode inductance, the plastic shell is provided with a plurality of side edges along installation groove outward, and the flexible PCB board is arranged on the side edge.

[0007] The utility model further provides that: the direct current support capacitor has two, including first direct current support capacitor and second direct current support capacitor;The Y2 electric capacity has two, including first Y2 electric capacity and second Y2 electric capacity.

[0008] The utility model further provides that: the magnetic core of the common mode inductance adopts nanocrystalline magnetic core.

[0009] The utility model further provides that: the capacity of the first direct current support capacitor is 22 μF, and the capacity of the second direct current support capacitor is 2.2 μF.

[0010] The further setting of the utility model is that the second DC support capacitor and common mode inductor are arranged in parallel, and the first DC support capacitor is arranged side by side with the common mode inductor.

[0011] The further setting of the utility model is that the first Y2 capacitor and the second Y2 capacitor are arranged on the side of the second DC support capacitor and away from the first DC support capacitor and the common mode inductor.

[0012] The further setting of the utility model is that the plastic shell is made of modified PPS plastic injection molding, and the mounting groove inner wall is provided with a plurality of reinforcing ribs.

[0013] The further setting of the utility model is that one end of the first DC support capacitor is connected with the positive pole of the input end, and the other end of the first DC support capacitor is connected with the negative pole of the input end; one end of the second DC support capacitor is connected with the positive pole of the output end, and the other end of the second DC support capacitor is connected with the negative pole of the output end; the first DC support capacitor and the second DC support capacitor are connected with the common mode inductor respectively.

[0014] The further setting of the utility model is that the input end of the common mode inductor is connected with the first DC support capacitor, and the output end of the common mode inductor is connected with the second DC support capacitor; the first Y2 capacitor and the second Y2 capacitor are electrically connected and connected with the grounding point respectively, and the first Y2 capacitor and the second Y2 capacitor are connected with the first DC support capacitor respectively.

[0015] The further setting of the utility model is that the mounting groove is sealed by epoxy resin glue filling.

[0016] Compared with the prior art, the utility model has the following beneficial effects: 1, the electronic components are reasonably arranged in the mounting groove of the plastic shell, so that the size of the filter is further reduced; 2, the connection of the copper sheet ensures that the internal resistance of the capacitor is lower, the contact is good, and the anti-vibration performance is good; 3, the capacitor is made of 120-degree metallized high-temperature film, and the inductor is designed by nanocrystalline material, and can work stably for a long time in high and low temperature occasions. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective view of the compact new energy thermal management filter in the embodiment.

[0018] Figure 2 It is the top view of the compact new energy thermal management filter in the embodiment.

[0019] Figure 3 It is the sectional view of A-A of Figure 2

[0020] Figure 4 It is the exploded view of the compact new energy thermal management filter in the embodiment.​

[0021] Figure 5 is the structural diagram of the plastic shell in the embodiment.

[0022] Figure 6 is the circuit schematic diagram of the compact new energy thermal management filter in the embodiment.

[0023] In the figure: 100, plastic shell; 101, mounting groove; 102, connecting copper sheet; 103, side edge part; 104, reinforcing rib; 105, partition plate; 106, grounding point; 200, Y2 capacitor; 201, first Y2 capacitor; 202, second Y2 capacitor; 300, DC support capacitor; 301, first DC support capacitor; 302, second DC support capacitor; 400, common mode inductor; 500, flexible PCB board. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application belong to the scope of protection of the present application. It should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] A compact new energy thermal management filter is disclosed in the embodiment, which is mainly applied in a new energy thermal management system and used for suppressing low-frequency electromagnetic interference in high-temperature and high-pulse occasions. Figures 1-5 As shown in the figure, the compact new energy thermal management filter includes a plastic shell 100, Y2 capacitors 200, DC support capacitors 300, a common mode inductor 400 and a flexible PCB board 500; the plastic shell 100 is provided with a mounting groove 101, and the DC support capacitors 300, the Y2 capacitors 200 and the common mode inductor 400 are arranged in the mounting groove 101; the number of the DC support capacitors 300 arranged in the mounting groove 101 is two, which are a first DC support capacitor 301 and a second DC support capacitor 302, and the number of the Y2 capacitors 200 arranged in the mounting groove 101 is also two, which are a first Y2 capacitor 201 and a second Y2 capacitor 202.

[0026] To meet the performance technical requirements of the filter, the capacity of the second DC support capacitor 302 is set to 22 μF, and the capacity of the first DC support capacitor 301 is set to 2.2 μF in this embodiment.

[0027] Figure 2 To reduce the size of the filter, the DC support capacitor 300, the Y2 capacitor 200, and the common-mode inductor 400 are arranged in the plastic shell 100 in this embodiment, and the mounting positions of the DC support capacitor 300, the Y2 capacitor 200, and the common-mode inductor 400 are optimized to reduce the volume occupied by the electronic components to reduce the size of the filter. Preferably, the second DC support capacitor 302 and the common-mode inductor 400 are arranged in parallel in this embodiment, occupying most of the space in the mounting groove 101. The second DC support capacitor 302 is arranged on the side of the common-mode inductor 400, and the first Y capacitor and the second Y capacitor are arranged on the side of the second DC support capacitor 302 away from the first DC support capacitor 301 and the common-mode inductor 400. In this way, the space in the mounting groove 101 is optimized, and the heat generated by the electronic components during operation is evenly dispersed, avoiding overheating of the filter due to heat accumulation.

[0028] The DC support capacitor 300 is also called a DC-Link capacitor. The safety capacitor includes an X capacitor and a Y capacitor. The Y capacitor is used to suppress common-mode interference. The Y2 capacitor 200 generally has a rated voltage that satisfies: 500 VAC ≥ Y2 rated voltage ≥ 150 VAC. The DC support capacitor 300 and the Y2 capacitor 200 in this embodiment are made of metallized polypropylene film.

[0029] As shown in Figure 3 , a partition 105 is arranged in the mounting groove 101 in this embodiment. The partition 105 is clamped in the mounting groove 101, and the second DC support capacitor 302 is arranged on the partition 105.

[0030] As shown in Figure 1 , Figure 2 , Figure 5 , the plastic shell 100 is an inner recessed open cover shell. Different geometric side edge portions 103 extend horizontally on the top of the plastic shell 100. A plurality of concave surfaces are arranged on the side edge portions 103. Flexible PCB boards 500 are arranged on the concave surfaces. The flexible PCB boards 500 serve as signal transmission media of the filter and further reduce the size of the filter.

[0031] The plastic shell 100 in this example is made of modified PPS plastic by injection molding to enhance the mechanical strength of the filter. A plurality of reinforcing ribs 104 are arranged on the inner wall of the mounting groove 101 of the plastic shell 100 to improve the shock resistance and adaptability to high and low temperature working environments of the filter.

[0032] As shown in Figure 1 , Figure 3As shown, the connecting copper sheet 102 is used to connect the first DC support capacitor 301, the second DC support capacitor 302 and the common mode inductor 400, the first Y2 capacitor 201 and the second Y2 capacitor 202 in this example. The connecting copper sheet 102 is welded with the pin of the electronic component to achieve the purpose of electrical connection. The use of the connecting copper sheet 102 ensures lower internal resistance of the capacitor, good contact and good anti-vibration performance. The connecting copper sheet 102 is embedded in the plastic shell 100 as the positive and negative input terminals and the positive and negative output terminals.

[0033] As shown in Figure 2 , Figure 5 A plurality of screw holes are provided on the plastic shell 100 for filter installation. One of the screw holes is used as the grounding point 106 connected to the first Y2 capacitor 201 and the second Y2 capacitor 202 by the connecting copper sheet 102.

[0034] Optionally, to further reduce the size of the filter, the first DC support capacitor 301, the second DC support capacitor 302, the first Y capacitor and the second Y capacitor in this embodiment are all capacitor cores.

[0035] Optionally, the first DC support capacitor 301 and the second DC support capacitor 302, the first Y capacitor and the second Y capacitor in this embodiment are made of 120-degree or more metallized high-temperature thin film, and are designed with high pulse DC capacitor to ensure stable operation of the filter in the large current ripple field.

[0036] Optionally, the magnetic core of the common mode inductor 400 in this embodiment is a nanocrystalline magnetic core. The Curie temperature of the nanocrystalline magnetic core can be as high as 560℃, which makes the nanocrystalline magnetic core have high thermal stability and can work continuously at 120℃. The capacitor is made of 120-degree or more metallized high-temperature thin film, which enables the filter to work stably for a long time in high and low temperature environments.

[0037] A new energy thermal management filter in this embodiment is sealed by filling epoxy resin into the installation groove 101 after installation.

[0038] Figure 6The circuit schematic diagram is a filter circuit, and the embodiment simultaneously discloses a circuit schematic diagram of a new energy thermal management filter.The filter comprises a first DC support capacitor 301, a second DC support capacitor 302, a first Y2 capacitor 201, a second Y2 capacitor 202 and a common-mode inductor 400;one end of the first DC support capacitor 301 is connected with a positive pole of an input end, and the other end of the first DC support capacitor 301 is connected with a negative pole of the input end;one end of the second DC support capacitor 302 is connected with a positive pole of an output end, and the other end of the second DC support capacitor 302 is connected with a negative pole of the output end;the first Y2 capacitor 201 and the second Y2 capacitor 202 are connected and respectively connected with a grounding point 106;an input end of the common-mode inductor 400 is connected with the first DC support capacitor 301, and an output end of the common-mode inductor 400 is connected with the second DC support capacitor 302, wherein a positive pole input end is connected with one end of the first DC support capacitor 301, a negative pole input end is connected with the other end of the first DC support capacitor 301, a positive pole output end is connected with one end of the second DC support capacitor 302, and a negative pole output end is connected with the other end of the second DC support capacitor 302.

[0039] The above is only a preferred embodiment of the present application, so equivalent changes or modifications made according to the structure, features and principles disclosed in the patent application range of the present application are included in the patent application range of the present application.

Claims

1. A compact new energy thermal management filter, characterized in that: The utility model relates to a plastic shell (100), Y2 electric capacity (200), direct current support electric capacity (300), common mode inductance (400) and flexible PCB board (500), the plastic shell (100) is equipped with the mounting groove (101), direct current support electric capacity (300), Y2 electric capacity (200) and common mode inductance (400) are arranged in the mounting groove (101), a plurality of connecting copper sheets (102) are equipped on the plastic shell (100), a plurality of connecting copper sheets (102) connect direct current support electric capacity (300) with common mode inductance (400), the plastic shell (100) is equipped with the side edge (103) outward along the mounting groove (101), and the flexible PCB board (500) is arranged on the side edge (103). The direct current support electric capacity (300) has two, including first direct current support electric capacity (301) and second direct current support electric capacity (302), and the Y2 electric capacity (200) has two, including first Y2 electric capacity (201) and second Y2 electric capacity (202).

2. The compact new energy thermal management filter of claim 1, wherein: The magnetic core of the common mode inductance (400) adopts a nanocrystalline magnetic core.

3. The compact new energy thermal management filter of claim 1, wherein: The capacity of the first direct current support electric capacity (301) is 2.2 mu F, and the capacity of the second direct current support electric capacity (302) is 22 mu F.

4. The compact new energy thermal management filter of claim 2, wherein: The second direct current support electric capacity (302) and the common mode inductance (400) are arranged in parallel, and the first direct current support electric capacity (301) is arranged side by side with the common mode inductance (400).

5. The compact new energy thermal management filter of claim 4, wherein: The first Y2 electric capacity (201) and the second Y2 electric capacity (202) are respectively arranged on the side of the first direct current support electric capacity (301) and away from the second direct current support electric capacity (302) and the common mode inductance (400).

6. The compact new energy thermal management filter of claim 5, wherein: The plastic shell (100) is formed by injection molding of modified PPS plastic, and a plurality of reinforcing ribs (104) are arranged on the inner wall of the mounting groove (101).

7. The compact new energy thermal management filter of claim 1, wherein: One end of the first direct current support electric capacity (301) is connected to the positive pole of the input end, the other end of the first direct current support electric capacity (301) is connected to the negative pole of the input end, one end of the second direct current support electric capacity (302) is connected to the positive pole of the output end, the other end of the second direct current support electric capacity (302) is connected to the negative pole of the output end, and the first direct current support electric capacity (301) and the second direct current support electric capacity (302) are respectively connected to the common mode inductance (400).

8. The compact new energy thermal management filter of claim 5, wherein: The input end of the common mode inductance (400) is connected to the first direct current support electric capacity (301), the output end of the common mode inductance (400) is connected to the second direct current support electric capacity (302), the first Y2 electric capacity (201) and the second Y2 electric capacity (202) are electrically connected and respectively connected to the grounding point (106), and the first Y2 electric capacity (201) and the second Y2 electric capacity (202) are respectively connected to the first direct current support electric capacity (301).

9. The compact new energy thermal management filter of claim 8, wherein: The mounting groove (101) is sealed by epoxy resin.

10. The compact new energy thermal management filter of claim 1, wherein: ​

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