A kind of electric vehicle kinetic energy recycles and utilizes system and method
Technical field
The present invention relates to electric vehicle technical field, more particularly to a kind of recycling of electric vehicle kinetic energy and utilization
System and method.
Background technology
Current automobile brake energy or a kind of energy not developed fully, the substantial amounts of kinetic energy in braking procedure
Thermal energy consumption can be converted into by friction to fall, this, which not only wastes the energy, also causes the premature abrasion of brake system of car, increase
Automobile use cost;And security risk of the character of heat-fading problem of brake into automobile under these operating modes.
In Regenerative Braking Technology, energy conversion is the first step, and it is to carry out braking and the conversion of driving torque that it, which is acted on, vapour
Car braking kinetic energy is converted into the energy of other forms.
The electric energy that electric vehicle braking produces is direct to power battery by step-up/step-down circuit and current rectifying and wave filtering circuit
Charging, so not only results in that the circuit of kinetic energy recovery system is excessively complicated, is additionally, since the characteristic of power battery in itself, car
It is limited to carry the charging performance of power battery, while there are energy secondary Transformation Phenomenon, therefore, returning for kinetic energy recovery system can be caused
Receive inefficiency;Further, since braking time is of short duration, therefore, it can cause that transient current is excessive, produces boost charge phenomenon, can be right
The performance and used life of vehicle mounted dynamic battery produces certain influence.
So in the prior art, the kinetic energy recovery system of electric vehicle is directly to power battery charging, due to power
Battery is difficult to realize short time high-power charging, therefore, result in energy regenerating and utilization ratio is relatively low, and power battery makes
It can be affected to some extent with service life and performance.
Moreover, kinetic energy recovery system of the prior art, is stored single using ultracapacitor group as direct braking energy
Member, specific power big the advantages of fast just with ultracapacitor discharge and recharge, and it is close there is energy to have ignored ultracapacitor
The shortcomings such as low, self-discharge rate is high, be not easy long-time energy storage, voltage is low are spent, and electric vehicle often occurs frequently
Regenerative braking is, it is necessary to there is the energy storage device of higher capacity, so causing what the kinetic energy recovery system of electric vehicle used
Phenomena such as volume increases, weight increases, self-discharge rate improves occurs in super capacitor, so that electronic traffic work can be seriously affected
Space layout, runnability and the cost price of tool.
The content of the invention
It is an object of the invention to provide a kind of recycling of electric vehicle kinetic energy and using system and method, so as to solve
Foregoing problems existing in the prior art.
To achieve these goals, the technical solution adopted by the present invention is as follows:
A kind of electric vehicle kinetic energy recycles and using system, and the kinetic energy recycles and includes circuit subsystem using system
System, the circuit subsystem include:Wheel hub motor, super capacitor, boosting battery, vehicle device device and vehicle mounted electrical apparatus, it is described super
One end of capacitance is connected with the wheel hub motor, the other end of the super capacitor respectively with the boosting battery, the vehicle device
Device is connected with the vehicle mounted electrical apparatus, and the boosting battery is connected with the vehicle device device and the vehicle mounted electrical apparatus respectively.
Further, the circuit subsystem further includes switch, and the switch is respectively arranged at the wheel hub motor and institute
State between super capacitor, between the super capacitor and the boosting battery, vehicle device device and vehicle mounted electrical apparatus, the boosting battery
Between the vehicle device device and the vehicle mounted electrical apparatus.
Preferably, the switch is relay switch.
Further, the kinetic energy recycles and further includes control subsystem using system, and the control subsystem includes:Control
Device, vehicle speed sensor and braking sensor processed, the input terminal of the controller respectively with the vehicle speed sensor and the braking
Sensor connects, and the output terminal of the controller is connected with the wheel hub motor and the relay switch respectively, the speed
Sensor is connected with the wheel hub motor, and the braking sensor is connected with brake apparatus.
Further, the circuit subsystem further includes DC/DC converters, and the other end of the super capacitor passes through described
DC/DC converters are connected with the boosting battery, the vehicle device device and the vehicle mounted electrical apparatus respectively.
Preferably, the wheel hub motor is embedded in two front-wheels or trailing wheel, and the super capacitor is located at wheel hub electricity
The inner side of machine.
Preferably, the boosting battery is ferric phosphate lithium cell.
A kind of electric vehicle kinetic energy recycling and Application way, include the following steps:
When electric vehicle is braked, wheel hub motor produces induced potential, the wheel hub motor and the ultracapacitor
Connection, charges for the ultracapacitor;Meanwhile boosting battery is connected with vehicle device device and vehicle mounted electrical apparatus respectively, the auxiliary
Battery is powered for the vehicle device device and the vehicle mounted electrical apparatus;
At the uniform velocity when driving, the ultracapacitor disconnects electric vehicle with the wheel hub motor, the auxiliary
Battery is disconnected with the vehicle device device and vehicle mounted electrical apparatus respectively, the ultracapacitor respectively with the boosting battery, car
Machine device is connected with vehicle mounted electrical apparatus, and the ultracapacitor is boosting battery charging, is vehicle device device and the vehicle mounted electrical apparatus confession
Electricity.
Preferably, realize and automatically control by the following method:
When electric vehicle is braked, the brake signal of the brake apparatus of braking sensor collection, and brake signal is passed
Controller is transported to, after controller receives brake signal, controls wheel hub decelerating through motor;Wheel hub motor is set to produce induced potential, car
Fast sensor gathers the reduce-speed sign of the wheel hub motor, and reduce-speed sign is transmitted to controller, the controller control wheel
Relay switch closure between hub motor and ultracapacitor, makes induced potential charge for ultracapacitor;The controller
After receiving reduce-speed sign, control the relay switch between boosting battery and vehicle device device and vehicle mounted electrical apparatus to close, make auxiliary
Battery is powered for vehicle device device and vehicle mounted electrical apparatus;Meanwhile control ultracapacitor and boosting battery, vehicle device device and vehicle mounted electrical apparatus
Between relay disconnect;
At the uniform velocity when driving, vehicle speed sensor gathers the at the uniform velocity signal of the wheel hub motor to electric vehicle, and will at the uniform velocity
To controller, the relay switch between the controller control wheel hub motor and ultracapacitor disconnects signal transmission, meanwhile,
Relay switch between the controller control ultracapacitor and boosting battery, vehicle device device and vehicle mounted electrical apparatus closes, and makes
Ultracapacitor is that boosting battery charges, is vehicle device device and vehicle mounted electrical apparatus power supply;Meanwhile the controller receives at the uniform velocity
Afterwards, the relay switch between boosting battery and vehicle device device and vehicle mounted electrical apparatus is controlled to disconnect.
The beneficial effects of the invention are as follows:An embodiment of the present invention provides a kind of recycling of electric vehicle kinetic energy and utilize system
System and method, by the way that one end of super capacitor is connected with the wheel hub motor, the other end of the super capacitor respectively with institute
State boosting battery, the vehicle device device is connected with the vehicle mounted electrical apparatus, the boosting battery respectively with the vehicle device device and institute
Vehicle mounted electrical apparatus connection is stated, when braking electric vehicle, the induced potential that wheel hub motor produces is super capacitor charging, makes system
Kinetic energy is converted into power storage in super capacitor, and at the uniform velocity when driving, the electric energy stored in super capacitor is re-used, and is
Vehicle device device and vehicle mounted electrical apparatus power supply, while charge for boosting battery, enable boosting battery in automobile brake, filled for vehicle device
Put with vehicle mounted electrical apparatus power, so as to avoid being directly power battery charging, then by power battery power, it is necessary to power battery into
The high-power charging of row short time, so, improve system kinetic energy recycling and utilization ratio;Further, since power battery will not
Occur that transient current is excessive and boost charge phenomenon, so the performance of power battery is unaffected, and then extend power electric
The service life in pond;Meanwhile it need not be supplied using system provided in this embodiment, power battery for vehicle device device and vehicle mounted electrical apparatus
Electricity, also indirectly extends the service life of power battery.
Brief description of the drawings
Fig. 1 is electric vehicle kinetic energy recycling provided in an embodiment of the present invention and the structure diagram using system.
In figure, the implication of each symbol is as follows:
1 wheel hub motor, 2 super capacitors, 3 boosting batteries, 4 vehicle device devices, 5 vehicle mounted electrical apparatus, 6 switches, 7 controllers, 8 speeds
Sensor, 9 braking sensors, 10DC/DC converters.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are not used to only to explain the present invention
Limit the present invention.
Embodiment one
As shown in Figure 1, an embodiment of the present invention provides a kind of recycling of electric vehicle kinetic energy and using system, it is described dynamic
It can recycle and include circuit subsystem using system, the circuit subsystem includes:Wheel hub motor 1, super capacitor 2, auxiliary electricity
Pond 3, vehicle device device 4 and vehicle mounted electrical apparatus 5, one end of super capacitor 2 are connected with wheel hub motor 1, the other end difference of super capacitor 2
It is connected with boosting battery 3, vehicle device device 4 and vehicle mounted electrical apparatus 5, boosting battery 3 is connected with vehicle device device 4 and vehicle mounted electrical apparatus 5 respectively.
The system of said structure, the specific course of work are:
When electric vehicle is braked, wheel hub motor produces induced potential, the wheel hub motor and the ultracapacitor
Connection, charges for the ultracapacitor;Meanwhile boosting battery is connected with vehicle device device and vehicle mounted electrical apparatus respectively, the auxiliary
Battery is powered for the vehicle device device and the vehicle mounted electrical apparatus;
At the uniform velocity when driving, the ultracapacitor disconnects electric vehicle with the wheel hub motor, the auxiliary
Battery is disconnected with the vehicle device device and vehicle mounted electrical apparatus respectively, the ultracapacitor respectively with the boosting battery, car
Machine device is connected with vehicle mounted electrical apparatus, and the ultracapacitor is boosting battery charging, is vehicle device device and the vehicle mounted electrical apparatus confession
Electricity.
With in the prior art, in electric vehicle braking kinetic energy recovery system directly be power battery charging, it is necessary to
Super capacitor volume is big, and space hold is big, manufactures the characteristics of of high cost and compares, the system provided in the present embodiment, by super electricity
Appearance is used in combination with boosting battery, and is that super capacitor charges by the induced potential for braking generation, supplemented by super capacitor
Help battery to charge, or directly power for vehicle device device and vehicle mounted electrical apparatus, then be vehicle device device and car by boosting battery in braking
Electric power supply is carried, without being directly power battery charging, without when electric vehicle is braked, power battery was both
Charge, power again for vehicle device device and vehicle mounted electrical apparatus, and power battery need to only power for motor and in-car air-conditioning device, institute
Not interfere with the performance of power battery, extend the service life of power battery, simultaneously as power battery is without suddenly fill
Electricity, then by power battery power supply, it is necessary to power battery carries out short time high-power charging, so, also improve the kinetic energy of system
Recycling and utilization ratio.
In the embodiment of the present invention, circuit subsystem further includes switch 6, and switch 6 is respectively arranged at wheel hub motor 1 and super electricity
Between holding 2, between super capacitor 2 and boosting battery 3, vehicle device device 4 and vehicle mounted electrical apparatus 5, boosting battery 3 and vehicle device device 4 and
Between vehicle mounted electrical apparatus 5.
By the setting of switch, the connection and disconnection of circuit can be eaily realized.Such as by wheel hub motor with surpassing
Switch closure between level capacitance, you can to realize the connection of wheel hub motor and super capacitor, open it, you can to realize wheel
The disconnection of hub motor and super capacitor.
In the embodiment of the present invention, switch 6 can be relay switch.
It can be realized by using relay switch and circuit communication or disconnection where switch are automatically controlled.
In the embodiment of the present invention, the kinetic energy recycles and further includes control subsystem, the control subsystem using system
Including:Controller 7, vehicle speed sensor 8 and braking sensor 9, the input terminal of controller 7 respectively with vehicle speed sensor 8 and braking
Sensor 9 connects, and the output terminal of controller 7 is connected with wheel hub motor 1 and relay switch respectively, vehicle speed sensor 8 and wheel hub
Motor 1 connects, and braking sensor 9 is connected with brake apparatus.
The control subsystem of said structure, its course of work are:
When electric vehicle is braked, the brake signal of the brake apparatus of braking sensor collection, and brake signal is passed
Controller is transported to, after controller receives brake signal, wheel hub decelerating through motor is controlled, wheel hub motor is produced induced potential, car
Fast sensor gathers the reduce-speed sign of the wheel hub motor, and reduce-speed sign is transmitted to controller, the controller control wheel
Relay switch closure between hub motor and ultracapacitor, makes induced potential charge for ultracapacitor;The controller
After receiving reduce-speed sign, control the relay switch between boosting battery and vehicle device device and vehicle mounted electrical apparatus to close, make auxiliary
Battery is powered for vehicle device device and vehicle mounted electrical apparatus;Meanwhile control ultracapacitor and boosting battery, vehicle device device and vehicle mounted electrical apparatus
Between relay disconnect;
At the uniform velocity when driving, vehicle speed sensor gathers the at the uniform velocity signal of the wheel hub motor to electric vehicle, and will at the uniform velocity
To controller, the relay switch between the controller control wheel hub motor and ultracapacitor disconnects signal transmission, meanwhile,
Relay switch between the controller control ultracapacitor and boosting battery, vehicle device device and vehicle mounted electrical apparatus closes, and makes
Ultracapacitor is that boosting battery charges, is vehicle device device and vehicle mounted electrical apparatus power supply;Meanwhile the controller receives at the uniform velocity
Afterwards, the relay switch between boosting battery and vehicle device device and vehicle mounted electrical apparatus is controlled to disconnect.
Pass through the control subsystem of said structure, it is possible to achieve system is automatically controlled.
In the embodiment of the present invention, the circuit subsystem further includes DC/DC converters 10, and the other end of super capacitor 2 leads to
DC/DC converters 10 are crossed to be connected with boosting battery 3, vehicle device device 4 and vehicle mounted electrical apparatus 5 respectively.
DC/DC converters are effective electric pressure converter for exporting fixed voltage after transformation input voltage.The embodiment of the present invention
In, by using the electric pressure converter, the induced potential being stored in super capacitor can be exported to auxiliary with fixed voltage
Battery, vehicle device device and vehicle mounted electrical apparatus.
In the embodiment of the present invention, wheel hub motor 1 is embedded in two front-wheels or trailing wheel, and super capacitor 2 is located at wheel hub motor 1
Inner side.
In the embodiment of the present invention, boosting battery 3 can be ferric phosphate lithium cell.
As will be understood by the skilled person in the art, boosting battery can also be ternary lithium battery, still, LiFePO4 electricity
Pond is low compared with ternary lithium battery cost, easy care, and cycle charging long lifespan.
Embodiment two
An embodiment of the present invention provides a kind of recycling of electric vehicle kinetic energy and Application way, include the following steps:
When electric vehicle is braked, wheel hub motor produces induced potential, the wheel hub motor and the ultracapacitor
Connection, charges for the ultracapacitor;Meanwhile boosting battery is connected with vehicle device device and vehicle mounted electrical apparatus respectively, the auxiliary
Battery is powered for the vehicle device device and the vehicle mounted electrical apparatus;
At the uniform velocity when driving, the ultracapacitor disconnects electric vehicle with the wheel hub motor, the auxiliary
Battery is disconnected with the vehicle device device and vehicle mounted electrical apparatus respectively, the ultracapacitor respectively with the boosting battery, car
Machine device is connected with vehicle mounted electrical apparatus, and the ultracapacitor is boosting battery charging, is vehicle device device and the vehicle mounted electrical apparatus confession
Electricity.
With in the prior art, in electric vehicle braking kinetic energy recovery system directly be power battery charging, it is necessary to
Super capacitor volume is big, and space hold is big, manufactures the characteristics of of high cost and compares, the system provided in the present embodiment, by super electricity
Appearance is used in combination with boosting battery, and is that super capacitor charges by the induced potential for braking generation, supplemented by super capacitor
Help battery to charge, or directly power for vehicle device device and vehicle mounted electrical apparatus, then be vehicle device device and car by boosting battery in braking
Electric power supply is carried, without being directly power battery charging, without when electric vehicle is braked, power battery was both
Charge, power again for vehicle device device and vehicle mounted electrical apparatus, and power battery need to only power for motor and in-car air-conditioning device, institute
Not interfere with the performance of power battery, extend the service life of power battery, simultaneously as power battery is without suddenly fill
Electricity, then by power battery power supply, it is necessary to power battery carries out short time high-power charging, so, also improve the kinetic energy of system
Recycling and utilization ratio.
In a preferred embodiment of the present invention, it can by the following method realize and automatically control:
When electric vehicle is braked, the brake signal of the brake apparatus of braking sensor collection, and brake signal is passed
Controller is transported to, after controller receives brake signal, controls wheel hub decelerating through motor, meanwhile, power battery stops giving wheel hub electricity
Machine is powered, and rotor does cutting magnetic induction line movement under the action of inertia in wheel hub motor, wheel hub motor is produced induced potential,
Vehicle speed sensor gathers the reduce-speed sign of the wheel hub motor, and reduce-speed sign is transmitted to controller, the controller control
Relay switch closure between wheel hub motor and ultracapacitor, makes induced potential charge for ultracapacitor;The control
After device receives reduce-speed sign, control the relay switch between boosting battery and vehicle device device and vehicle mounted electrical apparatus to close, make auxiliary
Battery is helped to power for vehicle device device and vehicle mounted electrical apparatus;Meanwhile control ultracapacitor and boosting battery, vehicle device device and vehicle mounted electric
Relay between device disconnects;
At the uniform velocity when driving, vehicle speed sensor gathers the at the uniform velocity signal of the wheel hub motor to electric vehicle, and will at the uniform velocity
To controller, the relay switch between the controller control wheel hub motor and ultracapacitor disconnects signal transmission, meanwhile,
Relay switch between the controller control ultracapacitor and boosting battery, vehicle device device and vehicle mounted electrical apparatus closes, and makes
Ultracapacitor is that boosting battery charges, is vehicle device device and vehicle mounted electrical apparatus power supply;Meanwhile the controller receives at the uniform velocity
Afterwards, the relay switch between boosting battery and vehicle device device and vehicle mounted electrical apparatus is controlled to disconnect.
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained:The embodiment of the present invention carries
A kind of electric vehicle kinetic energy has been supplied to recycle and using system and method, by the way that one end of super capacitor and the wheel hub is electric
Machine connects, and the other end of the super capacitor is connected with the boosting battery, the vehicle device device and the vehicle mounted electrical apparatus respectively,
The boosting battery is connected with the vehicle device device and the vehicle mounted electrical apparatus respectively, when braking electric vehicle, wheel hub electricity
The induced potential that machine produces charges for super capacitor, braking kinetic energy is converted into power storage in super capacitor, at the uniform velocity travels
When, the electric energy stored in super capacitor is re-used, and is that vehicle device device and vehicle mounted electrical apparatus are powered, while filled for boosting battery
Electricity, enables boosting battery in automobile brake, is that vehicle device device and vehicle mounted electrical apparatus are powered, so as to avoid being directly power electric
Pond is charged, then by power battery power supply, it is necessary to power battery carries out short time high-power charging, so, improve the dynamic of system
Can recycling and utilization ratio;Further, since power battery is not in that transient current is excessive and boost charge phenomenon, so power electric
The performance in pond is unaffected, and then extends the service life of power battery;Meanwhile using system provided in this embodiment
System, power battery need not power for vehicle device device and vehicle mounted electrical apparatus, also indirectly extend the service life of power battery.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
Those skilled in the art should be understood that above-described embodiment provide method and step sequential can according to actual conditions into
Row accommodation, also can concurrently carry out according to actual conditions.
All or part of step in the method that above-described embodiment is related to can be instructed by program relevant hardware come
Complete, the program can be stored in the storage medium that computer equipment can be read, for performing the various embodiments described above side
All or part of step described in method.The computer equipment, such as:Personal computer, server, the network equipment, intelligent sliding
Dynamic terminal, smart home device, wearable intelligent equipment, vehicle intelligent equipment etc.;The storage medium, such as:RAM、
ROM, magnetic disc, tape, CD, flash memory, USB flash disk, mobile hard disk, storage card, memory stick, webserver storage, network cloud storage
Deng.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, commodity or equipment including a series of elements not only include that
A little key elements, but also including other elements that are not explicitly listed, or further include for this process, method, commodity or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there are other identical element in the process including the key element, method, commodity or equipment.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
Depending on protection scope of the present invention.