GB2575972A - Electric bicycle wheel using supercapacitors and regenerative braking for short duration boosts in acceleration - Google Patents
Electric bicycle wheel using supercapacitors and regenerative braking for short duration boosts in acceleration Download PDFInfo
- Publication number
- GB2575972A GB2575972A GB1812207.7A GB201812207A GB2575972A GB 2575972 A GB2575972 A GB 2575972A GB 201812207 A GB201812207 A GB 201812207A GB 2575972 A GB2575972 A GB 2575972A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supercapacitors
- bicycle
- acceleration
- electric motor
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J43/00—Arrangements of batteries
- B62J43/10—Arrangements of batteries for propulsion
- B62J43/13—Arrangements of batteries for propulsion on rider-propelled cycles with additional electric propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
- B62M6/65—Rider propelled cycles with auxiliary electric motor power-driven at axle parts with axle and driving shaft arranged coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/80—Accessories, e.g. power sources; Arrangements thereof
- B62M6/90—Batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A bicycle wheel that has an electric motor 2 which is battery powered 3, 4. The battery or supercapacitor stores the kinetic energy that is regenerated when the bicycle is braking. The rider discharges the energy stored in the cell through the electric motor by operating the user controls 1 when a boost in acceleration is required. The electric motor may be mounted in the hub of the front or rear wheel. Charging or discharging of the supercapacitors may be controlled by handlebar mounted controls. The motor and system parameters may be controlled by a microcontroller 3.
Description
Electric Bicycle Wheel using Supercapacitors and Regenerative Braking for Short Duration Boosts in Acceleration
This invention relates to a replacement bicycle wheel which stores captured energy from braking in supercapacitors, then on demand discharges this energy to power an electric motor, providing a short duration assisted boost in acceleration.
During a typical journey, cyclists are required to bring their bicycle to a halt numerous times due to obstructions and to obey local traffic laws. Energy is wasted in the form of heat in conventional braking systems, and accelerating back up to speed from a standing start requires significant effort by the cyclist. This can be frustrating, demotivating and is potentially dangerous in busy traffic. Bicycles which provide powered assistance through the use of electric motors can help overcome these problems, but they have their own issues. A key challenge is the limitations of the energy storage mechanism - existing battery packs required to power electric bicycles are heavy, expensive, take significant amounts of time to charge and have short life spans before requiring replacement. On a practical level they may require removal from the bicycle, or the entire bicycle may need to be taken indoors to be charged. On a journey, once the batteries have discharged, batteries become 'dead weight'. Some replacement electric wheels exist which can be retrofitted to existing bicycles negating the need to purchase an entire new bicycle, however, they have the same limitations in terms of weight, expense and the need for charging.
To overcome these problems, the present invention proposes a replacement bicycle wheel (front or rear), capable of extracting kinetic energy from the system during braking, storing this energy in a bank of supercapacitors, and then discharging this energy through an electric motor on user command for a boost in acceleration. The system will comprise of: an electric motor mounted in the hub of the front wheel (which operates as both a conventional motor and a generator under braking), a microcontroller for controlling the motor and system parameters, a supercapacitor or bank of supercapacitors for storing energy, controls mounted on the handlebars and brakes for energy capture and release, and appropriate circuitry for supercapacitor charging, discharging and balancing. The system will be able to be retrofitted to traditional unassisted mechanical bicycles. User controls will be fitted to the handle bars, and the electric motor will be fitted within the hub of the wheel, but all other components may be all contained within the wheel itself, or as separate modules which are attached to the bicycle.
The controls may include a variable control for the user to continually adjust the level of regenerative braking force applied during braking.
The invention will now be described solely by way of example and with reference to the accompanying drawings in which:
Figure 1 shows the system fitted to a traditional mechanical bicycle in an arrangement where the supercapacitors and control circuitry are mounted within the wheel.
Figure 2 shows the system fitted to a traditional mechanical bicycle in an arrangement where the supercapacitors and control circuitry are mounted to the frame of the bicycle.
In Figure 1, user controls 1 for controlling the boost and regenerative braking are shown mounted to the handlebars with an electric motor 2 mounted in the hub of the wheel. The microcontroller and supercapacitor bank 3 is mounted within the front wheel in an annular module concentric with the hub.
Sensors mounted to the brake levers will cause the microcontroller to engage the motor 2 to act as a generator. This will apply a braking force to the bicycle and send electrical current from the motor to the controller electronics which in turn will charge the supercapacitor bank via a charging and balancing circuit. When the capacitors have reached a specified voltage, or the bicycle has come to a stop, regenerative braking will cease. When the user activates the boost sensor, the supercapacitors will discharge driving the electric motor 2 until the user indicates to stop or the supercapacitor bank reaches a specified voltage. This will provide a boost in acceleration.
Figure 2, shows an alternative embodiment where the user controls 1 for controlling the boost and regenerative braking are shown mounted to the handlebars with an electric motor 2 mounted in the hub of the wheel and a microcontroller and supercapacitor bank 3 mounted in a separate module to the frame of the bicycle. From a user perspective, the mode of operation is the same as the embodiment shown in Figure 1.
Claims (5)
1. A replacement bicycle wheel capable of being retrofitted to traditional unassisted bicycles which uses an electric motor to perform regenerative braking, extracting kinetic energy from the system during braking and storing this energy in a bank of supercapacitors, before discharging this energy through the same motor on user command for a short duration boost in acceleration.
2. A bicycle attachment according to claim 1 in which the electric motor used to apply both the braking force and driving force is mounted within the hub of the front or rear wheel.
3. A bicycle attachment according to claim 1 in which suitable controls for managing charging and discharging of the supercapacitors are mounted on the handlebars.
4. A bicycle attachment according to claim 1 in which energy storage for propulsion is provided by supercapacitors.
5. A bicycle attachment according to claim 1 in which a microcontroller is used to control the motor and system parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1812207.7A GB2575972A (en) | 2018-07-26 | 2018-07-26 | Electric bicycle wheel using supercapacitors and regenerative braking for short duration boosts in acceleration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1812207.7A GB2575972A (en) | 2018-07-26 | 2018-07-26 | Electric bicycle wheel using supercapacitors and regenerative braking for short duration boosts in acceleration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201812207D0 GB201812207D0 (en) | 2018-09-12 |
| GB2575972A true GB2575972A (en) | 2020-02-05 |
Family
ID=63518295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1812207.7A Withdrawn GB2575972A (en) | 2018-07-26 | 2018-07-26 | Electric bicycle wheel using supercapacitors and regenerative braking for short duration boosts in acceleration |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2575972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202200019470A1 (en) * | 2022-09-22 | 2024-03-22 | Renergetica Spa | Bicycle propulsion system and method of pedal assistance of a bicycle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110133542A1 (en) * | 2009-12-04 | 2011-06-09 | Massachusetts Institute Of Technology | Hybrid sensor-enabled electric wheel and associated systems, multi-hub wheel spoking systems, and methods of manufacturing and installing wheel spokes |
| CN203637996U (en) * | 2013-12-16 | 2014-06-11 | 华南理工大学 | Bicycle with function of recycling and converting energy in braking process |
| CN110149028A (en) * | 2018-02-12 | 2019-08-20 | 广州众恋科技有限公司 | A kind of energy recycle device of electric vehicle motor |
-
2018
- 2018-07-26 GB GB1812207.7A patent/GB2575972A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110133542A1 (en) * | 2009-12-04 | 2011-06-09 | Massachusetts Institute Of Technology | Hybrid sensor-enabled electric wheel and associated systems, multi-hub wheel spoking systems, and methods of manufacturing and installing wheel spokes |
| CN203637996U (en) * | 2013-12-16 | 2014-06-11 | 华南理工大学 | Bicycle with function of recycling and converting energy in braking process |
| CN110149028A (en) * | 2018-02-12 | 2019-08-20 | 广州众恋科技有限公司 | A kind of energy recycle device of electric vehicle motor |
Non-Patent Citations (1)
| Title |
|---|
| Copenhagen Wheel, 03/12/2013, The Copenhagen Wheel official product release, www.youtube.com, [online], Available from: https://www.youtube.com/watch?v=S10GMfG2NMY [25/11/2019] * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202200019470A1 (en) * | 2022-09-22 | 2024-03-22 | Renergetica Spa | Bicycle propulsion system and method of pedal assistance of a bicycle |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201812207D0 (en) | 2018-09-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) | ||
| S20A | Reinstatement of application (sect. 20a/patents act 1977) |
Free format text: REQUEST FOR REINSTATEMENT ALLOWED Effective date: 20210320 Free format text: REQUEST FOR REINSTATEMENT FILED Effective date: 20210316 |
|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |