Thermal management system for vehicle power inductor assembly

Patent metadata

Field	Value
Publication number	US-10699840-B2
Application number	US-201715810666-A
Country	US
Kind code	B2
Filing date	Nov 13, 2017
Priority date	Nov 13, 2017
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A power inductor assembly including a power inductor, a vehicle component, and a pair of distribution conduits is provided. The power inductor has a housing supporting a pair of coils. The vehicle component is located above the pair of coils. Each of the pair of distribution conduits is oriented relative to one of the pair of coils below the vehicle component and has one or more openings adjacent the coils to distribute coolant thereto. Each of the one or more openings may define one of a circular shape or a slot shape. Each of the one or more openings may be sized such that exiting coolant substantially uniformly covers the adjacent coil.

First claim

What is claimed is:

1. A power inductor assembly comprising:
a power inductor having a housing supporting a pair of coils;
a vehicle component located above the pair of coils; and
a pair of distribution conduits, each defining a first opening area and oriented vertically relative to one of the pair of coils below the vehicle component and having an attachment mounted to an end of at least one distribution conduit, wherein the attachment includes one or more conical openings defining a second opening area greater than the first opening area adjacent the coils to distribute coolant thereto.

2. The assembly of claim 1 , wherein each of the one or more openings defines one of a circular shape and a slot shape.

3. The assembly of claim 1 , wherein each of the one or more openings is sized such that exiting coolant substantially uniformly covers the adjacent coil.

4. The assembly of claim 1 , wherein each of the pair of distribution conduits is spaced from one of the pair of coils a length approximately equal to half to five times a diameter of one of the one or more openings.

5. The assembly of claim 1 , wherein the vehicle component is one of a portion of a transmission case housing, a portion of a supporting fixture for an electric motor or generator, the power inductor, and a variable voltage controller housing.

6. The assembly of claim 1 , wherein the power inductor defines a rectangular prism, and wherein each of the pair of coils is located above the rectangular prism and below the vehicle component.

7. The assembly of claim 1 , wherein the coolant is one of engine oil, transmission oil, and engine coolant.

8. A power inductor assembly comprising:
a power inductor including a housing supporting a pair of coils; and
two distribution conduits oriented vertically relative to the coils, wherein each of the distribution conduits defines a first opening area and is arranged with one of the coils such that coolant exiting the distribution conduit passes through an attachment mounted to an end of at least one distribution conduit and is expelled through a plurality of conical openings of the attachment, each conical opening defining a second opening area larger than the first opening area such that the expelled coolant covers a first predetermined area of one of the pair of coils.

9. The assembly of claim 8 , wherein the first predetermined area is further defined as an area substantially uniformly covering one of the pair of coils.

10. The assembly of claim 8 further comprising:
a third distribution conduit spaced from one of the two distribution conduits and oriented vertically relative to one of the pair of coils for coolant distribution thereupon; and
a fourth distribution conduit spaced from an other of the two distribution conduits and oriented vertically relative to the other of the pair of coils for coolant distribution thereupon.

11. The assembly of claim 8 further comprising:
a coolant pump in fluid communication with one of the two distribution conduits;
a sensor in communication with one of the pair of coils to monitor thermal conditions thereof; and
a controller in communication with the sensor to receive signals including the monitored thermal conditions and in communication with the coolant pump to direct operation thereof based on the monitored thermal conditions.

12. The assembly of claim 8 further comprising a vehicle component, wherein the pair of coils and the housing are sized for locating within a rectangular prism and the vehicle component is located outside of the rectangular prism, and wherein the distribution conduits are arranged with the vehicle component to provide the coolant to the pair of coils without contacting the vehicle component.

13. A power inductor assembly comprising:
a power inductor including a pair of coils to generate energy to assist in powering a vehicle; and
an inductor thermal management system including a coolant circuit in fluid communication with a pair of distribution conduits each spaced above one of the pair of coils and an attachment mounted to an end of at least one of the distribution conduits, the attachment defining a plurality of conical openings,
wherein each of the pair of distribution conduits defines a first opening area for delivering coolant to the attachment, and the attachment defines a second opening area greater than the first opening area to expel coolant directly upon one of the pair of coils and is spaced away from a respective one of the coils.

14. The assembly of claim 13 , wherein each of the pair of distribution conduits is oriented vertically relative to one of the pair of coils such that each of the openings is arranged with the one of the pair of coils to distribute coolant substantially uniformly thereupon.

15. The assembly of claim 14 , wherein each of the pair of distribution conduits is oriented vertically relative to one of the pair of coils such that clearance is provided for locating a vehicle component on an outer side of each of the distribution conduits and above the pair of coils.

16. The assembly of claim 13 , wherein each of the pair of distribution conduits is oriented horizontally relative to one of the pair of coils such that each of the openings is arranged with the one of the pair of coils to distribute coolant substantially uniformly thereupon.

17. The assembly of claim 16 , wherein each of the pair of distribution conduits is oriented horizontally relative to one of the pair of coils to provide space for locating a vehicle component above the pair of distribution conduits and a rectangular prism region defined by the power inductor.

18. The assembly of claim 13 , wherein the coolant is one of engine oil, transmission oil, and engine coolant.

Assignees

• Ford Global Tech Llc

Inventors

• Sung Myung Ki
• Jih Edward Chan-Jiun
• Degner Michael W

Classifications

• H01F27/10

  Liquid cooling · CPC title

• H01F2027/406

  Temperature sensor or protection · CPC title

• H01F37/00

  Fixed inductances not covered by group H01F17/00 · CPC title

• H01F27/402

  Association of measuring or protective means · CPC title

• H01F27/2876 Primary

  Cooling (cooling transformers and inductances in general H01F27/08) · CPC title