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KR-102961600-B1 - Horizontal Mating Connector for LDC with EMC Filter

KR102961600B1KR 102961600 B1KR102961600 B1KR 102961600B1KR-102961600-B1

Abstract

The horizontal connection type connector (1) for an LDC equipped with an EMC filter according to the present invention has a connector housing (10) formed with a separate structure for first and second channels (40-1, 40-2) each equipped with a bus bar (50), and an EMC filter (70) that shields electromagnetic waves leaking out from the bus bar (50) when power is supplied, so that a bus bar configuration and a housing injection molding structure equipped with an EMC filter (70) are applied. In particular, a 2-ch configuration of 1.75kW capable of handling 3.5kW with the EMC filter (70) is possible with a single-part connector housing structure, thereby enabling cost reduction and weight optimization, as well as improved mass production workability and assembly by securing space freedom for adding parts.

Inventors

  • 신승환
  • 김태형

Assignees

  • 주식회사 현대케피코

Dates

Publication Date
20260507
Application Date
20241203

Claims (15)

  1. A horizontal coupling type connector for an LDC including a busbar that supplies an LDC (Low DC) output to the outside from the connector housing, The above busbar is equipped with a component connection terminal, and A connection terminal is formed in the above-mentioned device connection terminal to electrically connect the busbar and the EMC filter, and The above busbar is inserted into the connector housing together with the above component connection terminal, and The above connector housing forms a 2-ch output stage with an injection molding structure that determines the insert position of the busbar, and The above 2Ch output terminal is separated into two 1Ch output terminals, each equipped with the above busbar. A horizontal connection type connector for LDC characterized by the following.
  2. A horizontal fastening type connector for an LDC according to claim 1, characterized in that the element connection terminal is connected by welding while overlapping on top of the busbar.
  3. A horizontal fastening type connector for an LDC according to claim 2, wherein the welding is one of resistance welding, laser welding, and soldering.
  4. delete
  5. A horizontal connection type connector for an LDC according to claim 1, characterized in that the element connection terminal forms a ground (GND) with a bush mounted on the connector housing through an electrical connection portion by a GND terminal connected together with the EMC filter.
  6. In claim 5, the connector housing forms an electrical connection seal by potting silicone on both sides of the electrical connection, and A horizontal fastening type connector for LDC characterized by forming an internal airtight seal of the connector housing through a gasket mounting structure for the surface sealing portion.
  7. A connector housing formed with a separate structure for a first channel and a second channel, each equipped with a busbar, A bush connected to ground (GND) for the above busbar, and When power is supplied to the busbar, an EMC filter is included in each of the first channel and the second channel to shield electromagnetic waves leaking to the outside by the busbar. A horizontal connection type connector for LDC characterized by the following.
  8. A horizontal fastening type connector for an LDC according to claim 7, wherein the bushing is integrated into the connector housing as an insert structure and maintains the axial force of the connector fixing bolt.
  9. In claim 7, each of the first channel and the second channel is provided with an electrical connection portion, and A horizontal fastening type connector for an LDC, characterized in that the electrical connection part comprises an element connection terminal welded and fixed to the busbar and a GND terminal forming ground (GND) with the bush.
  10. In claim 9, the element connection terminal forms a busbar guide groove, and A horizontal fastening type connector for an LDC, characterized in that the above-mentioned busbar is a terminal mounting guide fitted into the above-mentioned busbar guide groove, thereby restricting the movement of the above-mentioned element connection terminal.
  11. In claim 9, the element connection terminal forms a connection section, and A horizontal connection type connector for an LDC, characterized in that the above connection terminal connects the above component connection terminal to the above GND terminal.
  12. In claim 7, each of the first channel and the second channel is provided with a sealing portion, and A horizontal fastening type connector for LDC, characterized in that the above-mentioned airtight sealing portion includes a silicone potting that wraps the EMC filter with silicone.
  13. In claim 12, the airtight sealing portion includes a gasket, and A horizontal fastening type connector for LDC, characterized in that the above gasket maintains airtightness within the connector housing through a surface sealing structure.
  14. In claim 7, each of the first channel and the second channel is provided with a terminal fixing part, and A horizontal fastening type connector for LDC, characterized in that the terminal fixing part is composed of a vehicle-side terminal that is fixed to the busbar by screw fastening of a bolt and nut.
  15. A horizontal fastening type connector for an LDC according to claim 14, wherein the nut is press-fitted into the bolt insertion hole of the busbar and screw-fastened with the bolt.

Description

Horizontal Mating Connector for LDC with EMC Filter The present invention relates to a 12V connector for an LDC, and in particular to a horizontal coupling type connector for an LDC having a busbar configuration and injection molding structure for having an EMC filter. Generally, the LDC connector (Low DC Voltage Connector), which is a low-voltage connector, provides power to electrical components at a low voltage of 12 to 15V in power conversion products. For example, the above-mentioned LDC connector is classified into a 1-channel busbar vertical LDC connector, which features a connector capable of being connected vertically to a busbar and includes an inductor and cap for an EMC (Electromagnetic Compatibility) filter, or a 2-channel round bar horizontal LDC connector, which is a simpler form without an EMC filter compared to the 1-channel type. In this case, the EMC filter blocks interference to other electronic devices caused by noise generated by electronic devices, i.e., Electromagnetic Interference (EMI). However, the 2-channel round bar horizontal LDC connector has a vulnerability to EMC because it is not configured with an EMC filter. FIG. 1 is a configuration diagram of a horizontal connection type connector for an LDC equipped with an EMC filter according to the present invention, FIG. 2 is a busbar structure of an LDC connector according to the present invention, and FIG. 3 is an electromagnetic shielding state during operation of a horizontal connection type connector for an LDC equipped with an EMC filter according to the present invention. Embodiments of the present invention will be described in detail below with reference to the attached illustrative drawings. Since these embodiments are merely examples and can be implemented in various different forms by those skilled in the art to which the present invention pertains, the embodiments described herein are not limited to the examples described herein. Referring to FIG. 1, the LDC connector (Low DC Voltage Connector) (1) includes two first and second channels (40-1, 40-2) having a horizontal busbar arrangement structure in the y-axis direction of the xyz coordinates in the connector housing (10), and each of the first and second channels (40-1, 40-2) corresponds to a 3.5kW class (1.75kW + 1.75kW) class with a 1.75kW class per channel, and corresponds to electromagnetic shielding with an EMC filter (70). Therefore, the above LDC connector (1) is characterized as a horizontal connection type connector for LDC equipped with an EMC filter capable of handling 3.5kW class. Specifically, the connector housing (10) is a single injection-molded part that expands the function and performance of the LDC output to two first and second channels (40-1, 40-2), and has an insulating guide (11) (see FIG. 2 and 3) for insulation arranged between the first channel (40-1) side busbar (50) and the second channel (40-2) side busbar (50), and has a bush (20) inserted at four corners of the connector housing to maintain the axial force of the connector fixing bolt, and has a gasket (30) provided with a surface sealing structure to maintain internal airtightness of the power conversion product. Therefore, the connector housing (10) provides a space within the connector housing to accommodate a gasket (30), a bus bar (50), a ground terminal (60A), a component connection terminal (60B), an EMC filter (70), and silicon potting (80), and the vehicle side terminal (90) is connected by fastening a bolt (100A) and a nut (100B). In this way, the LDC connector (1) has a connector housing (10) as a single component, forms an electrical connection part with a bus bar (50), a GND terminal (60A), and a component connection terminal (60B), forms an electromagnetic shielding part with an EMC filter (70), forms an airtight sealing part with a gasket (30) and silicone potting (80), and forms a terminal fixing part with a vehicle side terminal (90), a bolt (100A), and a nut (100B). For example, as an electrical connection part, the bus bar (50) is an LDC output terminal for power transmission (e.g., 1.75kW*2Ch.) for supplying the output of the LDC generated from the power converter to an external system, the GND terminal (60A) connects the EMC filter (70) to GND (ground), and the component connection terminal (60B) is mounted on the bus bar (50) for electrical connection between the bus bar (50) and the EMC filter (70). In particular, the busbar (50), the component connection terminal (60B), the EMC filter (70), and the GND terminal (60A) have a structure in which they are connected through welding, and resistance welding, laser welding, soldering, etc., can be applied for a stable electrical connection between the terminal (90) and the busbar (50). For example, as the above electromagnetic wave blocking unit, the EMC filter (70) is configured with a mixture of L (inductor) and C (capacitor) to prevent noise (i.e., electromagnetic waves generated inside the power conversion product)