New energy thermal management filter

Abstract

The utility model relates to a new energy thermal management filter, which comprises an element box, a positive circuit and a negative circuit are arranged in the element box, the front end of the positive circuit is a power side positive terminal, the rear end of the positive circuit is a positive output end, the front end of the negative circuit is a power side negative terminal, and the rear end of the negative circuit is a negative output end. The rear end of the positive circuit is a positive output end, the rear end of the negative circuit is a negative output end, a first capacitor, a direct-current filter capacitor and a second capacitor are arranged between the positive circuit and the negative circuit from front to back, and a common-mode inductor is arranged between a direct-current filter capacitor connection point and a second capacitor connection point on the positive circuit and the negative circuit; a component cabin is arranged in the component box, epoxy resin is filled in an unoccupied position in the component cabin, and the signal circuit is embedded in the component box. The beneficial effects of the utility model lie in that the common-mode capacitor is adopted to replace a differential-mode capacitor to realize the filtering effect on the circuit, the filtering range is large, and the anti-interference performance is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter, especially new energy heat management filter. BACKGROUND

[0002] Electronic components in electric vehicles have very high anti-interference requirements in order to prevent vehicle failure, and filters are a common anti-interference electronic component and are widely used in electric vehicles.

[0003] Filters can effectively suppress electromagnetic interference and noise, ensuring stable and reliable signal transmission between various electronic systems. With the development of the new energy vehicle industry and the popularity of automotive consumer electronics, power grid noise interference is increasingly serious and has become a public nuisance in the electronic machinery field. In the complex electrical environment of electric vehicles, the inspection noise sources from components such as motors, battery management systems, and chargers seriously interfere with microcomputers and digital circuits. For example, if the vehicle communication system is disturbed, it may lead to inaccurate navigation or interruption of external communication; if the control system is disturbed, it may even cause the vehicle to lose control and other serious consequences.

[0004] In combination with the drawings Figure 1 The existing heat management filter has a differential mode inductor 101 connected to the positive line and two Y2 capacitors 104 and a DC link filter capacitor 105 connected to the positive line 102 and the negative line 103, thereby achieving a filtering effect. However, the existing heat management filter integrates the original components on a PCB, which has poor high and low temperature resistance and poor shock resistance. SUMMARY

[0005] To overcome the poor high and low temperature resistance and poor shock resistance of the existing heat management filter, the utility model provides a new energy heat management filter.

[0006] The technical solution of the utility model to solve the technical problem is: a new energy heat management filter, comprising an element box, the element box contains a positive circuit and a negative circuit, the front end of the positive circuit is a positive terminal on the power side, the rear end of the positive circuit is a positive output terminal, the front end of the negative circuit is a negative terminal on the power side, the rear end of the negative circuit is a negative output terminal, a first capacitor, a DC filter capacitor, and a second capacitor are arranged between the positive circuit and the negative circuit from front to back, a common mode inductor is arranged on the positive circuit and the negative circuit between the DC filter capacitor connection point and the second capacitor connection point; a component cabin is arranged in the element box, the DC filter capacitor, the first capacitor, and the second capacitor are arranged in the component cabin, the DC filter capacitor, the first capacitor, and the second capacitor are connected through a conductive sheet, the remaining space in the component cabin is filled with epoxy resin, and a set of signal circuits are embedded in the element box.

[0007] A preferred conductive sheet is a copper conductive sheet.

[0008] Further, the conductive sheet is a red copper tinned conductive sheet.

[0009] A preferred component box is a PPS plastic component box.

[0010] A preferred common mode inductor is a nanocrystalline capacitor.

[0011] In order to reduce installation requirements, the signal circuit is made of a flexible PCB.

[0012] Another preferred signal circuit is a signal line.

[0013] A preferred first capacitor and second capacitor are ceramic safety capacitors.

[0014] The utility model discloses a power line positive pole is connected on the power side positive pole terminal, power line negative pole is connected in the power side negative pole terminal, compressor line positive pole is connected on the positive output, and compressor line negative pole is connected in the negative output, then can use the filter function.

[0015] The utility model discloses a beneficial effect lies in: 1, using common mode capacitor instead of differential mode capacitor realizes the filter function to circuit, and the filter range is big, and the anti -interference is good.2, using modified PPS plastic injection moulding, enhances the mechanical strength of filter, and the capacitor uses the metallization high temperature film of more than 120 degrees to make, and the inductance uses nanocrystalline material design, and long -term stable work under high and low temperature occasions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the circuit schematic diagram of prior art thermal management filter.

[0017] Figure 2 It is the circuit schematic diagram of one embodiment of the utility model.

[0018] Figure 3 It is the schematic diagram of one embodiment of the utility model.

[0019] Figure 4 It is the schematic diagram of one embodiment of the utility model. DETAILED DESCRIPTION

[0020] The utility model will be described further in detail below in combination with the embodiment of the drawings.

[0021] Embodiment 1

[0022] Combining the drawings Figures 2 to 4The application discloses a new energy thermal management filter, which comprises an element box 1, wherein a positive electrode circuit 2 and a negative electrode circuit 3 are arranged in the element box 1, the front end of the positive electrode circuit 2 is a power supply side positive electrode terminal, the rear end of the positive electrode circuit 2 is a positive electrode output end, the front end of the negative electrode circuit 3 is a power supply side negative electrode terminal, the rear end of the negative electrode circuit 3 is a negative electrode output end, a first capacitor 4, a direct current filtering capacitor 5 and a second capacitor 6 are arranged between the positive electrode circuit 2 and the negative electrode circuit 3 from front to back, and a common mode inductor 7 is arranged at a position between the direct current filtering capacitor 5 and the second capacitor 6 on the positive electrode circuit 2 and the negative electrode circuit 3; a component cabin 8 is arranged in the element box 1, the direct current filtering capacitor 5, the first capacitor 4 and the second capacitor 6 are arranged in the component cabin 8, the direct current filtering capacitor 5, the first capacitor 4 and the second capacitor 6 are communicated through a conductive sheet 9, and the component cabin 8 is filled with epoxy resin at a spare position, and a signal circuit 10 is embedded on the element box 1.

[0023] Further, the conductive sheet 9 is a red copper tinned conductive sheet.

[0024] The element box 1 is preferably PPS plastic.

[0025] The common mode inductor 7 is preferably a nanocrystalline capacitor.

[0026] In order to reduce installation requirements, the signal circuit 10 is made of flexible PCB.

[0027] In one preferred embodiment, the first capacitor 4 and the second capacitor 6 are ceramic safety capacitors.

[0028] In use, the positive electrode of a power supply line is connected to the power supply side positive electrode terminal, the negative electrode of the power supply line is connected to the power supply side negative electrode terminal, the positive electrode of a compressor line is connected to the positive electrode output end, and the negative electrode of the compressor line is connected to the negative electrode output end, so that the filter function can be used.

[0029] Embodiment 2

[0030] The application discloses a new energy thermal management filter.

[0031] In another preferred embodiment, the signal circuit 10 is a signal line instead of a flexible PCB.

[0032] In use, the positive electrode of a power supply line is connected to the power supply side positive electrode terminal, the negative electrode of the power supply line is connected to the power supply side negative electrode terminal, the positive electrode of a compressor line is connected to the positive electrode output end, and the negative electrode of the compressor line is connected to the negative electrode output end, so that the filter function can be used.

[0033] The utility model discloses beneficial effect lies in: 1, adopt common mode capacitor instead of differential mode capacitor realizes the filter function to circuit, and filter range is big, and the anti -interference is good. 2, adopt modified PPS plastic injection moulding, and the mechanical strength of filter is enhanced, and capacitor adopts the metallization high -temperature film of more than 120 degrees and makes, and inductance adopts nanocrystalline material design, and long -term stable work under high and low temperature occasions.

Claims

1. A new energy thermal management filter, comprising a component box, containing a positive circuit and a negative circuit, the front end of the positive circuit is the positive terminal on the power supply side, the rear end of the positive circuit is the positive output terminal, the front end of the negative circuit is the negative terminal on the power supply side, and the rear end of the negative circuit is the negative output terminal, a first capacitor, a DC filter capacitor, and a second capacitor are arranged between the positive circuit and the negative circuit from front to back, characterized in that: a common-mode inductor is provided at a position between the DC filter capacitor connection point and the second capacitor connection point on the positive circuit and the negative circuit; a component compartment is provided in the component box, a DC filter capacitor, a first capacitor, and a second capacitor are provided in the component compartment, the DC filter capacitor, the first capacitor, and the second capacitor are connected by a conductive sheet, the empty space in the component compartment is filled with epoxy resin, and further comprising a group of signal circuits, which are embedded in the component box.

2. The new energy thermal management filter according to claim 1, characterized in that: The conductive sheet is made of copper.

3. The new energy thermal management filter according to claim 2, characterized in that: The conductive sheet is a tinned copper conductive sheet.

4. The new energy thermal management filter according to claim 1, characterized in that: The component box is made of PPS plastic.

5. The new energy thermal management filter according to claim 1, characterized in that: The common mode inductor adopts a nanocrystalline capacitor.

6. The new energy thermal management filter according to claim 1, characterized in that: The signal circuit is made of a flexible PCB.

7. The new energy thermal management filter according to claim 1, characterized in that: The signal circuit uses a signal line.

8. The new energy thermal management filter according to claim 1, characterized in that: The first capacitor and the second capacitor are ceramic safety capacitors.

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