Compact terminal assembly for power converters
View Patent ↗A terminal assembly for a power converter is provided. The terminal assembly includes first and second conductive components and a current sensor. The first conductive component has first and second releasable attachment formations. The second conductive component has first and second portions with respective first and second widths. The first width is less than the second width. The first portion is releasably attached to the first conductive component with the second releasable attachment formation. The current sensor has an opening therethrough and is positioned between the first conductive component and the second portion of the second conductive component such that the first portion of the first conductive component extends through the opening. The current sensor is responsive to current flowing through the first portion of the second conductive component.
1. A terminal assembly for a power converter comprising:
a first conductive component having a first portion and first and second releasable attachment formations;
a second conductive component having first and second portions with respective first and second widths, the first width being less than the second width and the first portion being releasably attached to the first conductive component with the second releasable attachment formation; and
a current sensor having an opening therethrough and being positioned between the first conductive component and the second portion of the second conductive component such that the first portion of the first conductive component extends through the opening, the current sensor being responsive to current flowing through the first portion of the second conductive component.
2. The terminal assembly of claim 1 , wherein the first and second conductive components are shaped such that current flowing into the first conductive component at the first releasable attachment formation towards the second releasable attachment formations and into the first portion of the second conductive component flows substantially in a first direction and current flowing from the first portion of the second conductive component towards the second portion of the second conductive component flows substantially in a second direction, an angle between the first and second directions being at least 90 degrees.
3. The terminal assembly of claim 2 , wherein the second direction is substantially perpendicular to the first direction.
4. The terminal assembly of claim 2 , wherein the first conductive component has a length extending in a direction that is substantially parallel to the first direction and a thickness extending in a direction that is substantially parallel to the second direction, the length of the first conductive component being greater than the thickness thereof.
5. The terminal assembly of claim 4 , wherein the second conductive component has a length extending in a direction that is substantially parallel to the second direction and the first and second widths thereof extend in a direction that is substantially parallel to the first direction, the length of the second conductive component being greater than the first and second widths.
6. The terminal assembly of claim 1 , wherein the second releasable attachment formation is shaped such that an opening extends therethrough, the opening having a width that is substantially the same as the first width, and the first portion of the second conductive component extending at least partially into the opening.
7. The terminal assembly of claim 6 , wherein the opening extends through the attachment formation in a direction that is substantially parallel to the second direction.
8. The terminal assembly of claim 7 , wherein the second releasable attachment formation contacts the first portion of the second conductive component on at least three sides thereof.
9. The terminal assembly of claim 2 , wherein the first releasable attachment formation is shaped such that a slit extends therethrough, the slit having a length that extends in a direction that is substantially parallel to the first direction and a height that extends in a direction that is substantially parallel to the second direction, the length of the slit being greater than the height.
10. The terminal assembly of claim 1 , wherein the current sensor is adjacent to the second releasable attachment formation of the first conductive component and the second portion of the second conductive component.
11. A terminal assembly for an automotive power converter comprising:
a first conductive component having a first portion and first and second releasable attachment formations;
a second conductive component having first and second portions with respective first and second widths, the first width being less than the second width and the first portion being releasably attached to the first conductive component with the second releasable attachment formation; and
a current sensor having an opening therethrough and being positioned between the first conductive component and the second portion of the second conductive component such that the first portion of the first conductive component extends through the opening, the current sensor being responsive to current flowing through the first portion of the second conductive component,
wherein the first and second conductive components are shaped such that current flowing into the first conductive component at the first releasable attachment formation towards the second releasable attachment formations and into the first portion of the second conductive component flows substantially in a first direction and current flowing from first portion of the second conducive component towards the second portion of the second conductive component flows substantially in a second direction, an angle between the first and second directions being at least 90 degrees.
12. The terminal assembly of claim 11 , wherein the second releasable attachment formation is shaped such that an opening extends therethrough, the opening having a width that is substantially the same as the first width, and the first portion of the second conductive component extending at least partially into the opening such that the second releasable attachment formation contacts the first portion of the second conductive component on at least three sides thereof.
13. The terminal assembly of claim 12 , wherein the first conductive component has a length extending in a direction that is substantially parallel to the first direction and a thickness extending in a direction that is substantially parallel to the second direction, the length of the first conductive component being greater than the thickness thereof and the second conductive component has a length extending in a direction that is substantially parallel to the second direction and the first and second widths thereof extend in a direction that is substantially parallel to the first direction, the length of the second conductive component being greater than the first and second widths.
14. The terminal assembly of claim 13 , wherein the second engagement formation comprises first and second members and a fastener interconnecting the first and second members such that a force is applied to the first portion of the second conductive component causing the first portion of the second conductive component to be fixed within the opening.
15. The terminal assembly of claim 14 , wherein the second direction is substantially perpendicular to the first direction.
16. An automotive drive system comprising:
an electric motor having a lead extending therefrom;
a housing coupled to the electric motor;
a direct current (DC) power supply coupled to the electric motor;
a power inverter having an inverter module coupled to the housing, the electric motor, and the DC power supply to receive DC power from the DC power supply and provide alternating current (AC) power to the electric motor;
a terminal assembly interconnecting the inverter module and the lead, the terminal assembly comprising:
a first conductive component having a first portion and first and second releasable attachment formations, the first releasable attachment formation being releasably attached to the inverter module;
a second conductive component having first and second portions with respective first and second widths, the first width being less than the second width, the first portion being releasably attached to the first conductive component with the second releasable attachment formation, and the second portion being coupled to the lead; and
a current sensor having an opening therethrough and being positioned between the first conductive component and the second portion of the second conductive component such that the first portion of the first conductive component extends through the opening, the current sensor being responsive to current flowing through the first portion of the second conductive component; and
a processor in operable communication with and configured to control the electric motor, the DC power supply, and the power inverter.
17. The automotive drive system of claim 16 , wherein the first and second conductive components are shaped such that current that flowing into the first conductive component at the first releasable attachment formation towards the second releasable attachment formations and into the first portion of the second conductive component flows substantially in a first direction and current flowing from first portion of the second conductive component towards the second portion of the second conductive component flows substantially in a second direction, an angle between the first and second directions being at least 90 degrees.
18. The automotive drive system of claim 17 , wherein the at least one inverter module has a substantially planar shape and a width that extends in a direction that is substantially parallel to the first direction and a thickness that extends in a direction that is substantially parallel to the second direction.
19. The automotive drive system of claim 18 , wherein the first releasable attachment formation is shaped such that a slit extends therethrough, the slit having a length that extends in a direction that is substantially parallel to the first direction and a height that extends in a direction that is substantially parallel to the second direction, the length of the slit being greater than the height.
20. The automotive drive system of claim 19 , wherein the at least one inverter module is at least partially extends into the slit and the first engagement formation comprises first and second members on opposing sides of the slit and a fastener interconnecting the first and second members such that a force is applied to the at least one inverter module causing the inverter module to be fixed within the slit.