Method and apparatus for controlling regenerative braking of vehicle
US-2015336458-A1 · Nov 26, 2015 · US
Recuperative brake on a vehicle
US10293708B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10293708-B2 |
| Application number | US-201715491567-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 19, 2017 |
| Priority date | Apr 20, 2016 |
| Publication date | May 21, 2019 |
| Grant date | May 21, 2019 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present invention relates to a method for recuperation based braking of a vehicle in which electrical energy generated during a braking process is decreased by operating at least one second electric machine of the vehicle in a zero slip mode in order to prevent overcharging of a traction battery of the vehicle.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for recuperation-based braking of a vehicle, comprising: generating electrical energy with a first electric machine of the vehicle during a braking process; operating with the electrical energy generated by the first electric machine a second electric machine in a zero slip mode in which a rotary field of a stator of the second electric machine synchronously follows a movement of a rotor of the second electric machine, so that no-load losses of the second electric machine are used to decrease the electrical energy generated by the first electric machine to thereby prevent overcharging of a traction battery of the vehicle; and performing the zero slip mode operation for a predetermined period of time or up to a predetermined threshold value of a state of charge of the traction battery of the vehicle until a driver requests a torque from the first electric machine or the second electric machine. 2. The method of claim 1 , further comprising prior to the decreasing step transferring the electrical energy to a buffer storage. 3. The method of claim 2 , wherein the buffer storage is configured as a part of the traction battery of the vehicle, said method further comprising dynamically discharging the buffer storage by operating the second electric machine of the vehicle in the zero slip mode when the vehicle is operated in a free mode. 4. The method of claim 2 , wherein the second electric machine is identical to the first electric machine. 5. The method of claim 1 , wherein the first electric machine is assigned to a first one of at least two electrically driven axles of the vehicle, and the second electric machine is assigned to a second one of the at least two electrically driven axles of the vehicle. 6. The method of claim 5 , wherein the electrical energy generated by the first electric machine is directly decreased by the second electric machine. 7. The method of claim 5 , wherein an amount of the electrical energy generated by the first electric machine corresponds exactly to an amount of electrical energy that can subsequently be decreased by the second electric machine.
Assignees
Inventors
Classifications
Electric energy management in electromobility · CPC title
- B60L7/18Primary
Controlling the braking effect (B60L7/12, B60L7/14, B60L7/16 take precedence) · CPC title
for braking on a slope · CPC title
for braking · CPC title
Windings for different functions · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10293708B2 cover?
- The present invention relates to a method for recuperation based braking of a vehicle in which electrical energy generated during a braking process is decreased by operating at least one second electric machine of the vehicle in a zero slip mode in order to prevent overcharging of a traction battery of the vehicle.
- Who is the assignee on this patent?
- Audi Ag
- What technology area does this patent fall under?
- Primary CPC classification B60L7/18. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 21 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).