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1. WO2019220341 - POWER SWITCH DEVICE WITH SHAPE MEMORY ALLOY ACTUATOR

Publication Number WO/2019/220341
Publication Date 21.11.2019
International Application No. PCT/IB2019/053987
International Filing Date 14.05.2019
IPC
H01H 61/01 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
61Electrothermal relays
01Details
H01H 61/02 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
61Electrothermal relays
02wherein the thermally-sensitive member is heated indirectly, e.g. resistively, inductively
H01H 1/54 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
1Contacts
50Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
54by magnetic force
H01H 1/20 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
1Contacts
12characterised by the manner in which co-operating contacts engage
14by abutting
20Bridging contacts
CPC
C21D 2201/01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
2201Treatment for obtaining particular effects
01Shape memory effect
F03G 7/065
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
7Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
06using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
065using a shape memory element
H01H 1/20
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
1Contacts
12characterised by the manner in which co-operating contacts engage
14by abutting
20Bridging contacts
H01H 1/54
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
1Contacts
50Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
54by magnetic force
H01H 2061/0122
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
61Electrothermal relays
01Details
0107making use of shape memory materials
0122Two SMA actuators, e.g. one for closing or resetting contacts and one for opening them
H01H 37/323
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
37Thermally-actuated switches
02Details
32Thermally-sensitive members
323making use of shape memory materials
Applicants
  • TE CONNECTIVITY CORPORATION [US]/[US]
Inventors
  • PRIEST, Marcus
  • HAAG, Gordon
  • KLEIN, Giulia
  • SETHI, Manik
  • SHROFF, Suraj
  • XU, Xiaozheng
Agents
  • STROUD, Adam L.
Priority Data
15/978,38414.05.2018US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) POWER SWITCH DEVICE WITH SHAPE MEMORY ALLOY ACTUATOR
(FR) DISPOSITIF DE COMMUTATION DE PUISSANCE AYANT UN ÉLÉMENT EN ALLIAGE À MÉMOIRE DE FORME
Abstract
(EN) A power switch device has a housing 12, a movable shuttle 56 with a bridge contact 54 and at least one shape memory alloy actuator 52. The housing has a cavity 30 provided with a heat conductive fluid 80 and stationary current carrying contacts 32, 34 which extend through the housing to the cavity. The shape memory alloy actuator 52 is attached to a first end of the shuttle 56 and to a first end of the housing 12, and responds to a first activation signal by contracting from an initial shape to move the shuttle 56 and the bridge contact 54 toward the stationary current carrying contacts 32, 34 to a closed position. At least one second shape memory alloy actuator 50 is attached to a second end of the shuttle and to a second end of the the housing, and contracts in response to a second actuation signal to move the shuttle and the bridge contacts away from the stationary current carrying contacts. A magnet (66) attached to the housing and a mating magnet (68) attached to the shuttle retain the shuttle in the closed position.
(FR) La présente invention concerne un dispositif de commutation de puissance présentant un boîtier 12, une navette mobile 56 avec un contact de pont 54 et au moins un actionneur en alliage à mémoire de forme 52. Le boîtier a une cavité 30 pourvue d'un fluide thermoconducteur 80 et de contacts fixes 32, 34 de transport de courant qui s'étendent à travers le boîtier jusqu'à la cavité. L'actionneur en alliage à mémoire de forme 52 est fixé à une première extrémité de la navette 56 et à une première extrémité du boîtier 12, et répond à un premier signal d'activation par contraction à partir d'une forme initiale pour déplacer la navette 56 et le contact de pont 54 vers les contacts fixes 32, 34 de transport de courant vers une position fermée. Au moins un second actionneur en alliage à mémoire de forme 50 est fixé à une seconde extrémité de la navette et à une seconde extrémité du logement, et se contracte en réponse à un second signal d'actionnement pour éloigner la navette et les contacts de pont des contacts fixes de transport de courant. Un aimant (66) fixé au boîtier et un aimant d'accouplement (68) fixé à la navette retiennent la navette dans la position fermée.
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