US RE49,723 E1
Power electronics assembly
Peter Barrass, Gateshead (GB); and Matt Jackson, Gateshead (GB)
Assigned to Turntide Technologies, Inc., Sunnyvale, CA (US)
Appl. No. 17/338,794
Filed by Sevcon Limited, Gateshead (GB)
PCT Filed Jul. 27, 2016, PCT No. PCT/GB2016/052301
§ 371(c)(1), (2) Date Jan. 19, 2018,
PCT Pub. No. WO2017/017448, PCT Pub. Date Feb. 2, 2017.
Application 17/338,794 is a reissue of application No. 15/746,067, filed on Jul. 27, 2016, granted, now 10,736,206, issued on Aug. 4, 2020.
Claims priority of application No. 1513204 (GB), filed on Jul. 27, 2015.
Int. Cl. H05K 1/02 (2006.01); H05K 1/05 (2006.01); H05K 1/14 (2006.01); H05K 1/18 (2006.01); H05K 3/32 (2006.01); H05K 3/36 (2006.01); H05K 3/00 (2006.01)
CPC H05K 1/0204 (2013.01) [H05K 1/056 (2013.01); H05K 1/144 (2013.01); H05K 1/18 (2013.01); H05K 3/32 (2013.01); H05K 3/368 (2013.01); H05K 1/0209 (2013.01); H05K 3/0061 (2013.01); H05K 2201/042 (2013.01); H05K 2201/066 (2013.01); H05K 2201/10409 (2013.01); H05K 2201/10598 (2013.01); H05K 2201/2036 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A power electronics assembly for an electric motor controller comprising:
an insulated metal substrate carrying controllable impedances of the power electronics assembly wherein the insulated metal substrate is thermally coupled to the controllable impedances;
a composite material substrate carrying elements of a power provider for providing power to be supplied to an electric motor via the controllable impedances;
a bolt comprising a bolt head and a bolt shaft for mechanically coupling the composite material substrate to the insulated metal substrate;
an electrically conductive sleeve configured to be held between a first electrical contact carried by the insulated metal substrate and a second electrical contact carried by the composite material substrate and to at least partially surround and be held in place by the bolt;
wherein the bolt is configured to clamp the composite material substrate to the insulated metal substrate to force the electrically conductive sleeve against the first electrical contact and the second electrical contact for electrical coupling with the controllable impedances; and
an electrically insulating wall extending away from the composite material substrate to define an insulative cavity on a side of the composite substrate that is opposite to the second electrical contact, wherein the bolt head is at least partially contained within the insulative cavity;
wherein the electrically insulating wall is part of an electrically insulating sleeve, and wherein the electrically conductive sleeve comprises a chamfer to expose a surface of the insulated metal substrate between the electrically conductive sleeve and the electrically insulating sleeve.