Electrical connection unit
The electrical connection unit simplifies the joining of semiconductor relay terminals to busbars by using a press-fitting method, eliminating the need for laser welding or soldering machines.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- YAZAKI CORP
- Filing Date
- 2024-11-20
- Publication Date
- 2026-06-01
AI Technical Summary
Conventional methods for joining semiconductor relay connection terminals to busbars require specialized equipment like laser welding machines and soldering machines, complicating the process.
The electrical connection unit employs a press-fitting method where the semiconductor relay's connection terminals are inserted into grooves in the busbars, eliminating the need for such equipment.
This simplifies the connection process by directly press-fitting the terminals into grooves in the busbars, reducing the need for specialized machinery.
Smart Images
Figure 2026089203000001_ABST
Abstract
Description
Technical Field
[0001] Aspects of the present invention relate to an electrical connection unit.
Background Art
[0002] Conventionally, an electrical connection unit including a pair of busbars and a semiconductor relay for switching between electrical connection (ON) and disconnection (OFF) between the pair of busbars has been known (see, for example, Patent Documents 1 and 2 below).
[0003] For the semiconductor relay, for example, an insulated gate field effect transistor (MOSFET) is used. The source-side connection terminal of the semiconductor relay is joined to one (input side) busbar, and the drain-side connection terminal is joined to the other (output side) busbar.
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0005] By the way, for joining the connection terminal of the semiconductor relay and the busbar, generally, laser welding, soldering, etc. are used. However, with these joining methods, equipment such as a laser welding machine and a soldering machine is required.
[0006] Aspects of the present invention provide an electrical connection unit capable of simplifying the joining of the connection terminal of the semiconductor relay and the busbar.
Means for Solving the Problems
[0007] An electrical connection unit according to an aspect of the present invention comprises a semiconductor relay including a pair of connection terminals, and a pair of busbars arranged on both sides of the semiconductor relay. The semiconductor relay is arranged in a state where it connects the pair of busbars by press-fitting the pair of connection terminals into grooves provided in the pair of busbars. [Effects of the Invention]
[0008] In the electrical connection unit according to an aspect of the present invention, it is possible to simplify the connection between the connection terminals of the semiconductor relay and the busbar. [Brief explanation of the drawing]
[0009] [Figure 1] This is a perspective view showing the configuration of an electrical connection unit according to one embodiment of the present invention. [Figure 2] Figure 1 is a plan view showing the configuration of the electrical connection unit. [Figure 3] Figure 2 is a cross-sectional view of the electrical connection unit along the line segment AA shown. [Figure 4] Figure 1 is a perspective view showing the state before the pair of connection terminals of the semiconductor relay are pressed into the grooves provided in the pair of busbars of the electrical connection unit. [Modes for carrying out the invention]
[0010] As an embodiment of the present invention, an electrical connection unit 1 shown in Figures 1 to 4 will be described. Figure 1 is a perspective view showing the configuration of the electrical connection unit 1. Figure 2 is a plan view showing the configuration of the electrical connection unit 1. Figure 3 is a cross-sectional view of the electrical connection unit 1 along the line segment AA shown in Figure 2. Figure 4 is a perspective view showing the state before the pair of connection terminals of the semiconductor relay are press-fitted into the grooves provided in the pair of busbars of the electrical connection unit 1.
[0011] Furthermore, in the drawings shown below, an XYZ Cartesian coordinate system is set, with the X-axis direction representing the front-to-back direction (length direction) of the electrical connection unit 1, the Y-axis direction representing the left-to-right direction (width direction) of the electrical connection unit 1, and the Z-axis direction representing the up-and-down direction (height direction) of the electrical connection unit 1.
[0012] As shown in Figures 1, 2, and 3, the electrical connection unit 1 of this embodiment comprises a semiconductor relay 2 and a pair of busbars 3a and 3b.
[0013] The semiconductor relay 2 switches between electrical connection (ON) and disconnection (OFF) between a pair of busbars 3a and 3b. For example, an insulated-gate field-effect transistor (MOSFET) is used for the semiconductor relay 2.
[0014] The semiconductor relay 2 has a pair of connection terminals 2a and 2b. The pair of connection terminals 2a and 2b are provided protruding in opposite directions from both sides in the width direction of the semiconductor relay 2. Furthermore, the semiconductor relay 2 has a structure in which the portion excluding the pair of connection terminals 2a and 2b is sealed with insulating resin 2d.
[0015] The pair of busbars 3a and 3b are made of a highly conductive metal, such as copper, processed into a predetermined shape. In this embodiment, the pair of busbars 3a and 3b are made of elongated flat plates.
[0016] The pair of busbars 3a and 3b are positioned on both sides of the semiconductor relay 2 in the width direction, with their ends facing each other, and extending in the width direction of the semiconductor relay 2.
[0017] The pair of busbars 3a and 3b have grooves 4a and 4b into which the pair of connection terminals 2a and 2b of the semiconductor relay 2 are press-fitted, and contact portions 5a and 5b that come into contact with the pair of connection terminals 2a and 2b that are press-fitted into the grooves 4a and 4b.
[0018] The groove portions 4a and 4b are provided so as to notch the side end portions on the opposite ends of the pair of bus bars 3a and 3b in the in-plane direction of the bus bars 3a and 3b. Further, the groove portions 4a and 4b are provided so as to notch the central portion in the thickness direction of the bus bars 3a and 3b from one side in the width direction to the front of the opposite side with a depth reaching from one side to the other side in accordance with the shapes of the connection terminals 2a and 2b.
[0019] The contact portions 5a and 5b are located at the end portions in the depth direction of the groove portions 4a and 4b and are provided linearly across the direction in which the bus bars 3a and 3b extend. Note that the contact portions 5a and 5b are not limited to such a configuration, and any configuration may be used as long as it can regulate the positions of the pair of connection terminals 2a and 2b press-fitted into the groove portions 4a and 4b.
[0020] When electrically connecting the pair of connection terminals 2a and 2b of the semiconductor relay 2 and the pair of bus bars 3a and 3b, as shown in FIG. 4, the pair of connection terminals 2a and 2b are press-fitted into the groove portions 4a and 4b from one side in the width direction of the pair of bus bars 3a and 3b toward the in-plane direction of the bus bars 3a and 3b.
[0021] The pair of connection terminals 2a and 2b press-fitted into the groove portions 4a and 4b are brought into contact with the contact portions 5a and 5b as shown in FIGS. 1 to 3. Thereby, the semiconductor relay 2 is positioned in a state where the center lines of the pair of bus bars 3a and 3b and the pair of connection terminals 2a and 2b coincide.
[0022] In the electrical connection unit 1 of the present embodiment having the above-described configuration, the pair of connection terminals 2a and 2b are press-fitted into the groove portions 4a and 4b provided in the pair of bus bars 3a and 3b, so that the semiconductor relay 2 is arranged in a state of connecting between the pair of bus bars 3a and 3b.
[0023] With this configuration, in the electrical connection unit 1 of the present embodiment, the connection terminal 2a on the source side of the semiconductor relay 2 is joined to one (input side) bus bar 3a, and the connection terminal 2b on the drain side of the semiconductor relay 2 is joined to the other (output side) bus bar 3b.
[0024] The gate-side connection terminal (not shown) of the semiconductor relay 2 is electrically connected to a control circuit (not shown) that performs ON / OFF switching control by the semiconductor relay 2.
[0025] In the electrical connection unit 1 of this embodiment, a pair of connection terminals 2a and 2b are press-fitted into grooves 4a and 4b provided in the pair of busbars 3a and 3b described above, eliminating the need for conventional equipment such as laser welding machines and soldering machines.
[0026] With the above configuration, the electrical connection unit 1 of this embodiment makes it possible to simplify the connection between the connection terminals 2a and 2b of the semiconductor relay 2 and the busbars 3a and 3b. [Explanation of Symbols]
[0027] 1…Electrical connection unit 2…Semiconductor relay 2a,2b…Connection terminals 3a,3b…Bus bars 4a,4b…Grooves 5a,5b…Contact parts
Claims
1. A semiconductor relay including a pair of connection terminals, The system comprises a pair of busbars arranged on both sides of the semiconductor relay, The semiconductor relay is an electrical connection unit in which the pair of busbars are connected by press-fitting the pair of connection terminals into grooves provided in the pair of busbars.
2. The electrical connection unit according to claim 1, wherein the groove portion is provided such that the side end of the busbar is notched in the in-plane direction of the busbar.
3. The electrical connection unit according to claim 1, wherein the busbar has a contact portion that contacts the connection terminal which is press-fitted into the groove.