# US 11,897,366 B2 · Methods and apparatuses for controlling an electric vehicle

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,897,366 B2
- Document ID: US11897366B2
- Status: Granted
- Kind: B2
- Application number: 16/574,165
- Filed: 2019-09-18
- Published: 2020-03-26
- Granted: 2024-02-13
- Earliest claimed: 2018-09-21
- Assignees: Accelerated Systems Inc.
- Applicants: Accelerated Systems Inc.
- Inventors: Silvio Rotilli Filho; Tim Lambert; Muhammad Ikhlas
- Web page: https://patentgrep.com/patent/US11897366B2

## CPC

- B60L 7/18: Controlling the braking effect (B60L7/12, B60L7/14, B60L7/16 take precedence)
- B60L 7/26: Controlling the braking effect
- B60L 15/2009: {for braking}
- B60W 30/18118: {Hill holding}
- B60W 30/18127: {Regenerative braking}
- B60W 30/18172: {Preventing, or responsive to skidding of wheels}
- B60W 2520/105: Longitudinal acceleration
- B60W 2520/26: Wheel slip
- B60W 2710/083: Torque
- Y02T 10/64: Electric machine technologies in electromobility
- Y02T 10/72: Electric energy management in electromobility
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

There is provided a method for controlling an electric vehicle. The method includes receiving a regenerative braking activation indicator. If the regenerative braking activation indicator is affirmative, the method includes applying regenerative braking at an initial level to an electric motor of the electric vehicle. The method also includes obtaining a vehicle motion parameter of the electric vehicle measured when the regenerative braking is being applied. In addition, the method includes changing the regenerative braking to a modified level based on the vehicle motion parameter.

## Claims

### Claim 1

A method for controlling an electric vehicle, the method comprising:
receiving a regenerative braking activation indicator;
if the regenerative braking activation indicator is affirmative, applying regenerative braking at an initial level to an electric motor of the electric vehicle;
obtaining a vehicle motion parameter of the electric vehicle measured when the regenerative braking is being applied;
changing the regenerative braking to a modified level in response to the vehicle motion parameter;
obtaining a corresponding vehicle motion parameter when the regenerative braking is being applied at the modified level;
if the corresponding vehicle motion parameter is greater than a vehicle motion parameter threshold, changing the regenerative braking to a further modified level; and
if the corresponding vehicle motion parameter is equal to or less than the vehicle motion parameter threshold, changing the regenerative braking to the initial level.

### Claim 2 (depends on 1)

The method of claim 1, wherein:
the vehicle motion parameter comprises an acceleration of the electric vehicle, the corresponding vehicle motion parameter comprises a corresponding acceleration of the electric vehicle, and the vehicle motion parameter threshold comprises an acceleration threshold;
the obtaining the vehicle motion parameter and the corresponding vehicle motion parameter comprise obtaining the acceleration and the corresponding acceleration respectively; and
the changing the regenerative braking comprises setting the modified level to be greater than the initial level if the acceleration is greater than the acceleration threshold.

### Claim 3 (depends on 2)

The method of claim 2, wherein:
the changing the regenerative braking to the further modified level comprises: if the corresponding acceleration is greater than the acceleration threshold, changing the regenerative braking to the further modified level being greater than the modified level.

### Claim 4 (depends on 1)

The method of claim 1, further comprising:
receiving from a sensor a vehicle environment parameter of the electric vehicle; and
changing the regenerative braking to the modified level based further on the vehicle environment parameter.

### Claim 5 (depends on 1)

The method of claim 1, further comprising:
receiving a mechanical braking parameter of the electric vehicle; and
one or more of:
changing the regenerative braking to the modified level based further on the mechanical braking parameter; and
changing a mechanical braking level of the electric vehicle based on the changing the regenerative braking to the modified level.

### Claim 6

A controller for controlling an electric vehicle, the controller comprising:
a memory to store instructions executable by a processor; and
the processor in communication with the memory, the processor to:
receive a regenerative braking activation indicator;
if the regenerative braking activation indicator is affirmative, apply regenerative braking at an initial level to an electric motor of the electric vehicle;
obtain a vehicle motion parameter of the electric vehicle measured when the regenerative braking is being applied;
change the regenerative braking to a modified level in response to the vehicle motion parameter;
obtain a corresponding vehicle motion parameter when the regenerative braking is being applied at the modified level;
if the corresponding vehicle motion parameter is greater than a vehicle motion parameter threshold, change the regenerative braking to a further modified level; and
if the corresponding vehicle motion parameter is equal to or less than the vehicle motion parameter threshold, change the regenerative braking to the initial level.

### Claim 7 (depends on 6)

The controller of claim 6, wherein:
the vehicle motion parameter comprises an acceleration of the electric vehicle, the corresponding vehicle motion parameter comprises a corresponding acceleration of the electric vehicle, and the vehicle motion parameter threshold comprises an acceleration threshold;
to obtain the vehicle motion parameter and the corresponding vehicle motion parameter the processor is to obtain the acceleration and the corresponding acceleration respectively; and
to change the regenerative braking the processor is to set the modified level to be greater than the initial level if the acceleration is greater than the acceleration threshold.

### Claim 8 (depends on 7)

The controller of claim 7, wherein:
to change the regenerative braking to the further modified level the processor is to: if the corresponding acceleration is greater than the acceleration threshold, change the regenerative braking to the further modified level being greater than the modified level.

### Claim 9 (depends on 6)

The controller of claim 6, wherein the processor is further to:
receive from a sensor a vehicle environment parameter of the electric vehicle; and
change the regenerative braking to the modified level based further on the vehicle environment parameter.

### Claim 10 (depends on 6)

The controller of claim 6, wherein the processor is further to:
receive a mechanical braking parameter of the electric vehicle; and
one or more of:
change the regenerative braking to the modified level based further on the mechanical braking parameter; and
change a mechanical braking level of the electric vehicle based on the change of the regenerative braking to the modified level.