Electric vehicle drive unit
US-10723224-B2 · Jul 28, 2020 · US
Drive axle system having multiple electric motors
US2022297538A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022297538-A1 |
| Application number | US-202217833462-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 6, 2022 |
| Priority date | Mar 23, 2020 |
| Publication date | Sep 22, 2022 |
| Grant date | — |
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- Title
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- Abstract
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A drive axle system having at least one differential assembly, a first electric motor, and a second electric motor. The first electric motor and the second electric motor may be selectively connectable to the differential assembly. The first electric motor, the second electric motor, or both may provide torque to the differential assembly.
First claim
Opening claim text (preview).
1 . A drive axle system comprising: a first differential assembly that is rotatable about a first differential axis; a second differential assembly that is rotatable about a second differential axis; a first electric motor that is operatively connectable to the first differential assembly; and a second electric motor that is operatively connectable to the second differential assembly, wherein the first electric motor and the second electric motor are operatively connectable in series with a clutch. 2 . The drive axle system of claim 1 wherein the first electric motor and the second electric motor are rotatable about a motor axis. 3 . The drive axle system of claim 2 wherein the clutch is disposed along the motor axis between the first electric motor and the second electric motor. 4 . The drive axle system of claim 1 further comprising a second clutch that selectively couples the first electric motor to the first differential assembly. 5 . The drive axle system of claim 4 wherein the first electric motor and the second electric motor are rotatable about a motor axis, and the second clutch is disposed along the motor axis between the first electric motor and the first differential assembly. 6 . The drive axle system of claim 1 further comprising a third clutch that selectively couples the second electric motor to the second differential assembly. 7 . The drive axle system of claim 6 wherein the first electric motor and the second electric motor are rotatable about a motor axis, and the third clutch is disposed along the motor axis between the second electric motor and the second differential assembly. 8 . The drive axle system of claim 1 wherein the first electric motor and the second electric motor are operable at a same efficiency at different rotational speeds. 9 . The drive axle system of claim 1 wherein further comprising a second clutch that selectively couples the first electric motor to the first differential assembly and a third clutch that selectively couples the second electric motor to the second differential assembly. 10 . The drive axle system of claim 9 wherein the first electric motor and the second electric motor are rotatable about a motor axis, and wherein the clutch, the second clutch, and the third clutch are disposed along the motor axis. 11 . The drive axle system of claim 10 wherein a first motor shaft extends from the clutch to the second clutch. 12 . The drive axle system of claim 10 wherein a second motor shaft extends from the clutch to the third clutch. 13 . The drive axle system of claim 9 wherein first electric motor and the second electric motor are operatively connected to the first differential assembly but not to the second differential assembly when the clutch couples the first electric motor and the second electric motor, the second clutch couples the first electric motor and the first differential assembly, and the third clutch decouples the second electric motor from the second differential assembly. 14 . The drive axle system of claim 9 wherein first electric motor and the second electric motor provide torque to the first differential assembly but not to the second differential assembly when the clutch couples the first electric motor and the second electric motor, the second clutch couples the first electric motor and the first differential assembly, and the third clutch decouples the second electric motor from the second differential assembly. 15 . The drive axle system of claim 9 wherein the first electric motor and the second electric motor are operatively connected to the second differential assembly but not to the first differential assembly when the clutch couples the first electric motor and the second electric motor, the third clutch couples the second electric motor and the second differential assembly, and the second clutch decouples the first electric motor from the first differential assembly. 16 . The drive axle system of claim 9 wherein the first electric motor and the second electric motor provide torque to the second differential assembly but not to the first differential assembly when the clutch couples the first electric motor and the second electric motor, the third clutch couples the second electric motor and the second differential assembly, and the second clutch decouples the first electric motor from the first differential assembly. 17 . The drive axle system of claim 9 wherein the first electric motor and the second electric motor are operatively connected to the first differential assembly and the second differential assembly when the clutch, the second clutch, and the third clutch are engaged. 18 . The drive axle system of claim 9 wherein the first electric motor and the second electric motor provide torque to the first differential assembly and the second differential assembly when the clutch, the second clutch, and the third clutch are engaged.
Assignees
Inventors
Classifications
provided between independent half axles (B60K17/18, B60K17/20 take precedence) · CPC title
one motor mounted on a propulsion axle for rotating right and left wheels of this axle · CPC title
- F16H48/42Primary
characterised by features of the input shafts, e.g. mounting of drive gears thereon · CPC title
comprising a power take off shaft · CPC title
- B60K1/02Primary
comprising more than one electric motor · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2022297538A1 cover?
- A drive axle system having at least one differential assembly, a first electric motor, and a second electric motor. The first electric motor and the second electric motor may be selectively connectable to the differential assembly. The first electric motor, the second electric motor, or both may provide torque to the differential assembly.
- Who is the assignee on this patent?
- Arvinmeritor Technology Llc
- What technology area does this patent fall under?
- Primary CPC classification F16H48/42. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Sep 22 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).