IP Library › Granted Patent US 10,103,673
Granted Patent B2
US 10,103,673 · App. 15/541,605 · Granted Oct 16, 2018

Motor apparatus comprising at least twelve coils

Inventor: Torsten Wilharm (Buehl, DE)
Assignee: Robert Bosch GmbH
H02P25/22H02K3/28H02K29/03H02P27/085H05K7/2089B60L3/003
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Quick Facts
Patent No.
US 10,103,673
App. No.
15/541,605
Granted
Oct 16, 2018
Kind
B2
Abstract

The invention is based on a motor apparatus, in particular on an EC motor apparatus, comprising at least one stator ( 12 a; 12 b; 12 c ) which has at least twelve coils ( 14 a, 14 a′, 16 a, 16 a′, 18 a, 18 a′, 20 a, 20 d, 22 a, 22 b′, 24 a, 24 a′; 14 b, 14 b′, 16 b, 6 b′, 18 b, 18 b′, 20 b, 20 b′, 22 b, 22 b′, 24 b, 24 b′; 14 c, 16 c, 18 c, 20 c, 22 c, 24 c, 142 c, 44 c, 146 c, 148 c, 150 c, 152 c ), and comprising at least one power supply unit ( 26 a; 26 b; 26 c ). It is proposed that coils ( 14 a, 14 a′, 16 a, 16 a′, 18 a, 18 a′, 20 a, 20 a′, 22 a, 22 a′, 24 a, 24 a′; 14 b, 4 b′, 16 b, 16 b′, 18 b, 18 b′, 20 b, 20 b′, 22 b, 22 b′, 24 b, 24 b′; 14 c, 16 c, 18 c, 20 c, 22 c, 24 c, 42 c, 144 c, 146 c, 148 c, 150 c, 152 c ), which directly follow one another in the circumferential direction ( 36 a; 36 b; 36 c ), of the at least one stator ( 12 a; 12 b; 12 c ) are connected to differing phases of the power supply unit ( 26 a; 26 b; 26 c ) in at least one operating state.

Claims (11)

1. A motor apparatus, comprising at least one stator ( 12 a ; 12 b ; 12 c ) which has at least twelve coils ( 14 a , 14 a ′, 16 a , 16 a ′, 18 a , 18 a ′, 20 a , 20 a ′, 22 a , 22 a ′, 24 a , 24 a ′; 14 b , 14 b ′, 16 b , 16 b ′, 18 b , 18 b ′, 20 b , 20 b ′, 22 b , 22 b ′, 24 b , 24 b ′; 14 c , 16 c , 18 c , 20 c , 22 c , 24 c , 142 c , 144 c , 146 c , 148 c , 150 c , 152 c ), and comprising at least one power supply unit ( 26 a ; 26 b ; 26 c ), characterized in that the at least twelve coils ( 14 a , 14 a ′, 16 a , 16 a ′, 18 a , 18 a ′, 20 a , 20 a ′, 22 a , 22 a ′, 24 a , 24 a ′; 14 b , 14 b ′, 16 b , 16 b ′, 18 b , 18 b ′, 20 b , 20 b ′, 22 b , 22 b ′, 24 b , 24 b ′; 14 c , 16 c , 18 c , 20 c , 22 c , 24 c , 142 c , 144 c , 146 c , 148 c , 150 c , 152 c ) of the at least one stator ( 12 a ; 12 b ; 12 c ), which directly follow one another in the circumferential direction ( 36 a ; 36 b ; 36 c ), are connected in at least one operating state to different phases of the power supply unit ( 26 a ; 26 b ; 26 c ), and wherein opposing coils ( 14 a , 14 a ′, 16 a , 16 a ′, 18 a , 18 a ′, 20 a , 20 a ′, 22 a , 22 a ′, 24 a , 24 a ′; 14 b , 14 b ′, 16 b , 16 b ′, 18 b , 18 b ′, 20 b , 20 b ′, 22 b , 22 b ′, 24 b , 24 b ′) of the at least one stator ( 12 a ; 12 b ) are connected in parallel in each case.

2. The motor apparatus as claimed in claim 1 , characterized in that the at least one power supply unit ( 26 a ; 26 b ) comprises at least one first inverter ( 28 a ; 30 b ) which energizes a first coil ( 14 a ; 14 b ) and a second coil ( 14 a ′; 14 b ′) of the stator ( 12 a ; 12 b ), and comprises at least one second inverter ( 32 a ; 34 b ) which energizes one further coil ( 16 a , 16 a ′; 16 b , 16 b ′) of the stator ( 12 a ; 12 b ), which is disposed between the first coil ( 14 a ; 14 b ) and the second coil ( 14 a ′; 14 b ′) in the circumferential direction ( 36 a ; 36 b ).

3. The motor apparatus as claimed in claim 2 , characterized in that the at least one power supply unit ( 26 a ; 26 b ) comprises at least one first inverter assembly ( 38 a ; 40 b ) which includes the first inverter ( 28 a ; 30 b ), and comprises at least one second inverter assembly ( 42 a ; 44 b ) which includes the second inverter ( 32 a ; 34 b ).

4. The motor apparatus as claimed in claim 3 , characterized in that the second inverter assembly ( 42 a ; 44 b ) of the at least one power supply unit ( 26 a ; 26 b ) is designed out-of-phase with respect to the first inverter assembly ( 38 a ; 40 b ) of the at least one power supply unit ( 26 a ; 26 b ).

5. The motor apparatus as claimed at least in claim 3 , characterized in that at least one of the at least two inverter assemblies ( 38 a , 42 a ) is designed as a three-fold half bridge.

6. The motor apparatus as claimed at least in claim 3 , characterized in that at least one of the at least two inverter assemblies ( 40 b , 44 b , 46 b , 48 b , 50 b , 52 b ) is designed as a four-quadrant regulator.

7. The motor apparatus as claimed in claim 1 , characterized in that opposing coils ( 14 a , 14 a ′, 16 a , 16 a ′, 18 a , 18 a ′, 20 a , 20 a ′, 22 a , 22 a ′, 24 a , 24 a ′; 14 b , 14 b ′, 16 b , 16 b ′, 18 b , 18 b ′, 20 b , 20 b ′, 22 b , 22 b ′, 24 b , 24 b ′) of the at least one stator ( 12 a ; 12 b ) form one coil group in each case.

8. The motor apparatus as claimed in claim 1 , characterized in that the coils ( 14 c , 16 c , 18 c , 20 c , 22 c , 24 c , 142 c , 144 c , 146 c , 148 c , 150 c , 152 c ) of the at least one stator ( 12 c ) are energized by an inverter ( 154 c , 156 c , 158 c , 160 c , 162 c , 164 c , 166 c , 168 c , 170 c , 172 c , 174 c , 176 c ), respectively, of the power supply unit ( 26 c ).

9. The motor apparatus as claimed in claim 1 , characterized by at least one rotor ( 54 a ; 54 b ; 54 c ) which comprises at least ten poles ( 56 a ; 56 b ; 56 c ).

10. An EPS drive comprising a motor apparatus ( 10 a ; 10 b ; 10 c ) as claimed in claim 1 .

11. The motor apparatus as claimed in claim 1 , wherein the motor apparatus is an electronically commutated motor apparatus.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 5, 2017
From: WILHARM, TORSTEN
To: ROBERT BOSCH GMBH
Reel/Frame 042905/0177 →
Priority Claims (1)
DE 10 2015 200 226 · Jan 9, 2015 · national
Continuity (1)
Related Publication 20170346435A1 · Nov 30, 2017