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Method for operating a drive system of an electric vehicle and drive system for an electric vehicle
US2020324657A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020324657-A1 |
| Application number | US-202016840863-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 6, 2020 |
| Priority date | Apr 11, 2019 |
| Publication date | Oct 15, 2020 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A method for operating a drive system ( 10 ) of an electric vehicle, comprising a first energy source ( 21 ), a second energy source ( 22 ) formed as an electrical energy store, and at least one electric machine ( 30 ) is disclosed. In a first operating mode, electrical energy is transferred from the first energy source ( 21 ) to at least one electric machine ( 30 ), and electrical energy is transferred from the second energy source ( 22 ) to at least one electric machine ( 30 ). In a second operating mode, electrical energy is transferred from the first energy source ( 21 ) to at least one electric machine ( 30 ), and electrical energy is transferred from at least one electric machine ( 30 ) to the second energy source ( 22 ).
First claim
Opening claim text (preview).
1 . A method for operating a drive system ( 10 ) of an electric vehicle, the drive system comprising a first energy source ( 21 ), a second energy source ( 22 ) formed as an electrical energy store, and at least one electric machine ( 30 , 31 , 32 ), the method comprising in a first operating mode, transferring electrical energy from the first energy source ( 21 ) to at least one electric machine ( 30 , 31 , 32 ), and transferring electrical energy from the second energy source ( 22 ) to at least one electric machine ( 30 , 31 , 32 ), and in a second operating mode, transferring electrical energy from the first energy source ( 21 ) to at least one electric machine ( 30 , 31 , 32 ), and transferring electrical energy from at least one electric machine ( 30 , 31 , 32 ) to the second energy source ( 22 ). 2 . The method according to claim 1 , wherein the drive system ( 10 ) comprises a six-phase electric machine ( 30 ), wherein in the first operating mode, electrical energy is transferred from the first energy source ( 21 ) to the six-phase electric machine ( 30 ), and electrical energy is transferred from the second energy source ( 22 ) to the six-phase electric machine ( 30 ), and in that in the second operating mode, electrical energy is transferred from the first energy source ( 21 ) to the six-phase electric machine ( 30 ), and electrical energy is transferred from the six-phase electric machine ( 30 ) to the second energy source ( 22 ). 3 . The method according to claim 1 , wherein the drive system ( 10 ) comprises a first three-phase electric machine ( 31 ) and a second three-phase electric machine ( 32 ) wherein in the first operating mode, electrical energy is transferred from the first energy source ( 21 ) to the first three-phase electric machine ( 31 ), and electrical energy is transferred from the second energy source ( 22 ) to the second three-phase electric machine ( 32 ), and in the second operating mode, electrical energy is transferred from the first energy source ( 21 ) to the first three-phase electric machine ( 31 ), and electrical energy is transferred from the second three-phase electric machine ( 32 ) to the second energy source ( 22 ). 4 . The method according to claim 1 , wherein in a third operating mode, electrical energy is transferred from the first energy source ( 21 ) to at least one electric machine ( 30 , 31 , 32 ), and no electrical energy is transferred between the second energy source ( 22 ) and an electric machine ( 30 , 31 , 32 ). 5 . The method according to claim 1 , wherein the first operating mode is selected when a state of charge of the second energy source ( 22 ) exceeds a first threshold value. 6 . The method according to claim 1 , wherein the second operating mode is selected when a state of charge of the second energy source ( 22 ) falls below a second threshold value. 7 . The method according to claim 6 , wherein in the second operating mode, a charging power is defined as a function of a rotational speed, a torque, or both a rotational speed and a torque of the electric machine ( 30 , 31 , 32 ) to which electrical energy is transferred from the first energy source ( 21 ). 8 . A drive system ( 10 ) for an electric vehicle, the drive system comprising a first energy source ( 21 ), a second energy source ( 22 ) formed as an electrical energy store, and at least one electric machine ( 30 , 31 , 32 ), wherein wherein the drive system is configured to transfer electrical energy from the first energy source ( 21 ) to at least one electric machine ( 30 , 31 , 32 ), and to transfer electrical energy from the second energy source ( 22 ) to at least one electric machine ( 30 , 31 , 32 ), and to transfer electrical energy from at least one electric machine ( 30 , 31 , 32 ) to the second energy source ( 22 ). 9 . The drive system ( 10 ) according to claim 8 , wherein the drive system ( 10 ) comprises a six-phase electric machine ( 30 ), wherein electrical energy can be transferred from the first energy source ( 21 ) to the six-phase electric machine ( 30 ), and electrical energy can be transferred from the second energy source ( 22 ) to the six-phase electric machine ( 30 ), and electrical energy cam be transferred from the six-phase electric machine ( 30 ) to the second energy source ( 22 ). 10 . The drive system ( 10 ) according to claim 8 , wherein the drive system ( 10 ) comprises a first three-phase electric machine ( 31 ) and a second three-phase electric machine ( 32 ), wherein electrical energy can be transferred from the second energy source ( 21 ) to the first three-phase electric machine ( 31 ), and electrical energy can be transferred from the second energy source ( 22 ) to the second three-phase electric machine ( 32 ), and electrical energy can be transferred from the second three-phase electric machine ( 32 ) to the second energy source ( 22 ). 11 . The drive system ( 10 ) according to claim 8 , wherein a selection unit ( 50 ) is provided, which selects an operating mode as a function of a state of charge of the second energy source ( 22 ). 12 . The drive system ( 10 ) according to claim 11 , wherein the selection unit ( 50 ) predefines a charging power in the second operating mode as a function of a rotational speed, a torque, or both rotational speed and a torque of the electric machine ( 30 , 31 , 32 ) to which electrical energy is transferred from the first energy source ( 21 ).
Assignees
Inventors
Classifications
Application of hydrogen technology to transportation, e.g. using fuel cells · CPC title
Electric energy management in electromobility · CPC title
Electric machine technologies in electromobility · CPC title
Hybrid vehicles · CPC title
Plug-in electric vehicles · CPC title
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Frequently asked questions
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- What does patent US2020324657A1 cover?
- A method for operating a drive system ( 10 ) of an electric vehicle, comprising a first energy source ( 21 ), a second energy source ( 22 ) formed as an electrical energy store, and at least one electric machine ( 30 ) is disclosed. In a first operating mode, electrical energy is transferred from the first energy source ( 21 ) to at least one electric machine ( 30 ), and electrical energy is tr…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification B60L50/50. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Oct 15 2020 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).