CN105291854A - System and method for recovery and utilization of kinetic energy of electric vehicle - Google Patents
System and method for recovery and utilization of kinetic energy of electric vehicle Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 title abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 46
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 239000005955 Ferric phosphate Substances 0.000 claims description 4
- 229940032958 ferric phosphate Drugs 0.000 claims description 4
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical group [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 4
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000003860 storage Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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Abstract
The invention provides a system and method for recovery and utilization of kinetic energy of an electric vehicle, and relates to the technical field of electric vehicles. By the adoption of the system, one end of a supercapacitor is connected with hub motors, the other end of the supercapacitor is connected with an auxiliary battery, a vehicle-mounted terminal device and a vehicle-mounted electrical appliance, and the auxiliary battery is connected with the vehicle-mounted terminal device and the vehicle-mounted electrical appliance, and therefore when the electric vehicle brakes, induced potential generated by the hub motors charges the supercapacitor, and braking kinetic energy can be converted into electric energy to be stored in the supercapacitor; and when the electric vehicle moves at a constant speed, the electric energy stored in the supercapacitor is utilized again, and supplied to the vehicle-mounted terminal device and the vehicle-mounted electrical appliance, and the auxiliary battery is charged at the same time. The phenomena that a power battery is directly charged, and then the power battery conducts power supply are avoided, the kinetic energy recovery and utilization efficiency of the system is improved, the performance of the power battery cannot be affected, and then the service life of the power battery is prolonged.
Description
Technical field
The present invention relates to electric vehicle technical field, particularly relate to a kind of electric vehicle recover kinetic energy and utilize system and method.
Background technology
Current automobile brake energy or a kind of energy fully do not developed, kinetic energy a large amount of in braking procedure can only be converted into thermal energy consumption by friction and fall, this not only wastes the wearing and tearing that the energy also causes brake system of car too early, adds automobile use cost; And the character of heat-fading problem of drg has become the potential safety hazard of automobile under these operating modes.
In Regenerative Braking Technology, transformation of energy is the first step, and its effect is the conversion carrying out braking and driving torque, automobile brake kinetic energy is converted to the energy of other form.
The electric energy that electric vehicle braking produces directly is charged to electrokinetic cell by step-up/step-down circuit and current rectifying and wave filtering circuit, the circuit of kinetic energy recovery system so not only can be caused too complicated, and, due to the characteristic of electrokinetic cell itself, the charging performance of vehicle mounted dynamic battery is limited, there is energy secondary Transformation Phenomenon simultaneously, therefore, the organic efficiency of kinetic energy recovery system can be caused low; In addition, because braking time is of short duration, therefore, can cause instantaneous current excessive, produce boost charge phenomenon, certain impact can be produced on the performance and used life of vehicle mounted dynamic battery.
So in prior art, the kinetic energy recovery system of electric vehicle is directly to power battery charging, because electrokinetic cell is difficult to realize short time high-power charging, therefore, result in energy regenerating and utilization ratio is on the low side, and the service life of electrokinetic cell and performance can be subject to certain impact.
And, kinetic energy recovery system of the prior art, use bank of super capacitors as direct braking energy memory cell, just make use of ultracapacitor discharge and recharge fast, the advantage that specific power is large, and have ignored ultracapacitor, to there is energy density low, self-discharge rate is high, not easily long-time energy storage, the shortcomings such as voltage is low, and electric vehicle often there will be regenerative brake frequently, need the closed-center system of higher capacity, the super capacitor causing the kinetic energy recovery system of electric vehicle to use strengthens so there will be volume, weight increases, the phenomenons such as self-discharge rate raising, thus the space that can have a strong impact on electric vehicle is arranged, drive ability and cost of price.
Summary of the invention
The object of the present invention is to provide a kind of electric vehicle recover kinetic energy and utilize system and method, thus solving the foregoing problems existed in prior art.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of electric vehicle recover kinetic energy and utilize system, described recover kinetic energy and utilize system to comprise circuit subsystem, described circuit subsystem comprises: wheel hub motor, super capacitor, boosting battery, car machine and vehicle mounted electrical apparatus, one end of described super capacitor is connected with described wheel hub motor, the other end of described super capacitor is connected with described boosting battery, described car machine and described vehicle mounted electrical apparatus respectively, and described boosting battery is connected with described car machine and described vehicle mounted electrical apparatus respectively.
Further, described circuit subsystem also comprises switch, described switch is arranged between described wheel hub motor and described super capacitor respectively, described super capacitor and described boosting battery, between car machine and vehicle mounted electrical apparatus, described boosting battery and between described car machine and described vehicle mounted electrical apparatus.
Preferably, described switch is relay switch.
Further, described recover kinetic energy and utilize system also to comprise control subsystem, described control subsystem comprises: controller, car speed sensor and braking sensor, the input end of described controller is connected with described car speed sensor and described braking sensor respectively, the mouth of described controller is connected with described wheel hub motor and described relay switch respectively, described car speed sensor is connected with described wheel hub motor, and described braking sensor is connected with brake equipment.
Further, described circuit subsystem also comprises DC/DC conv, and the other end of described super capacitor is connected with described boosting battery, described car machine and described vehicle mounted electrical apparatus respectively by described DC/DC conv.
Preferably, described wheel hub motor is embedded in two front-wheels or trailing wheel, and described super capacitor is positioned at the inner side of described wheel hub motor.
Preferably, described boosting battery is ferric phosphate lithium cell.
A kind of electric vehicle recover kinetic energy and Application way, comprise the steps:
During electric vehicle braking, wheel hub motor produces induced potential, and described wheel hub motor is communicated with described ultracapacitor, for described ultracapacitor charges; Meanwhile, boosting battery is communicated with vehicle mounted electrical apparatus with car machine respectively, and described boosting battery is that described car machine and described vehicle mounted electrical apparatus are powered;
When electric vehicle at the uniform velocity travels, described ultracapacitor and described wheel hub motor disconnect, described boosting battery disconnects with described car machine and vehicle mounted electrical apparatus respectively, described ultracapacitor is communicated with vehicle mounted electrical apparatus with described boosting battery, car machine respectively, and described ultracapacitor is boosting battery charging, powers for described car machine and vehicle mounted electrical apparatus.
Preferably, realize by the following method automatically controlling:
During electric vehicle braking, the speed-slackening signal of the brake equipment that braking sensor gathers, and speed-slackening signal is transferred to controller, after controller receives speed-slackening signal, control wheel hub decelerating through motor; Wheel hub motor is made to produce induced potential, car speed sensor gathers the restriction signal of described wheel hub motor, and restriction signal is transferred to controller, the relay switch that described controller controls between wheel hub motor and ultracapacitor closes, and makes induced potential be ultracapacitor charging; After described controller receives restriction signal, control boosting battery and the relay switch between car machine and vehicle mounted electrical apparatus close, and make boosting battery be that car machine and vehicle mounted electrical apparatus are powered; Meanwhile, control ultracapacitor and boosting battery, relay between car machine and vehicle mounted electrical apparatus disconnects;
When electric vehicle at the uniform velocity travels, car speed sensor gathers the at the uniform velocity signal of described wheel hub motor, and will at the uniform velocity Signal transmissions to controller, the relay switch that described controller controls between wheel hub motor and ultracapacitor disconnects, simultaneously, described controller controls ultracapacitor and boosting battery, relay switch between car machine and vehicle mounted electrical apparatus closes, and makes ultracapacitor be boosting battery charging, powers for car machine and vehicle mounted electrical apparatus; Meanwhile, described controller receives at the uniform velocity, and control boosting battery and the relay switch between car machine and vehicle mounted electrical apparatus disconnect.
The invention has the beneficial effects as follows: embodiments provide a kind of electric vehicle recover kinetic energy and utilize system and method, by one end of super capacitor is connected with described wheel hub motor, the other end of described super capacitor respectively with described boosting battery, described car machine is connected with described vehicle mounted electrical apparatus, described boosting battery is connected with described car machine and described vehicle mounted electrical apparatus respectively, when electric vehicle is braked, the induced potential that wheel hub motor produces is super capacitor charging, braking kinetic energy is made to be converted into power storage in super capacitor, when at the uniform velocity travelling, the electric energy stored in super capacitor is re-used, for car machine and vehicle mounted electrical apparatus are powered, it is boosting battery charging simultaneously, enable boosting battery when automobile brake, for car machine and vehicle mounted electrical apparatus are powered, thus to avoid be directly power battery charging, powered by electrokinetic cell again, electrokinetic cell is needed to carry out short time high-power charging, so, improve recover kinetic energy and the utilization ratio of system, in addition, because electrokinetic cell there will not be the excessive and boost charge phenomenon of instantaneous current, so the performance of electrokinetic cell can not be affected, and then the service life of electrokinetic cell is extended, meanwhile, adopt the system that the present embodiment provides, electrokinetic cell, without the need to powering for car machine and vehicle mounted electrical apparatus, also indirectly extends the service life of electrokinetic cell.
Accompanying drawing explanation
Fig. 1 is the electric vehicle recover kinetic energy that the embodiment of the present invention provides and the structural representation utilizing system.
In figure, the implication of each symbol is as follows:
1 wheel hub motor, 2 super capacitors, 3 boosting batteries, 4 car machines, 5 vehicle mounted electrical apparatus, 6 switches, 7 controllers, 8 car speed sensors, 9 braking sensors, 10DC/DC conv.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.Should be appreciated that detailed description of the invention described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one
As shown in Figure 1, embodiments provide a kind of electric vehicle recover kinetic energy and utilize system, described recover kinetic energy and utilize system to comprise circuit subsystem, described circuit subsystem comprises: wheel hub motor 1, super capacitor 2, boosting battery 3, car machine 4 and vehicle mounted electrical apparatus 5, one end of super capacitor 2 is connected with wheel hub motor 1, the other end of super capacitor 2 is connected with boosting battery 3, car machine 4 and vehicle mounted electrical apparatus 5 respectively, and boosting battery 3 is connected with car machine 4 and vehicle mounted electrical apparatus 5 respectively.
The system of said structure, concrete working process is:
During electric vehicle braking, wheel hub motor produces induced potential, and described wheel hub motor is communicated with described ultracapacitor, for described ultracapacitor charges; Meanwhile, boosting battery is communicated with vehicle mounted electrical apparatus with car machine respectively, and described boosting battery is that described car machine and described vehicle mounted electrical apparatus are powered;
When electric vehicle at the uniform velocity travels, described ultracapacitor and described wheel hub motor disconnect, described boosting battery disconnects with described car machine and vehicle mounted electrical apparatus respectively, described ultracapacitor is communicated with vehicle mounted electrical apparatus with described boosting battery, car machine respectively, and described ultracapacitor is boosting battery charging, powers for described car machine and vehicle mounted electrical apparatus.
With prior art, it is directly power battery charging in electric vehicle braking kinetic energy recovery system, the super capacitor volume needed is large, space hold is large, the feature that manufacturing cost is high is compared, the system provided in the present embodiment, super capacitor is combined with boosting battery, and be super capacitor charging by the induced potential that braking produces, by super capacitor be boosting battery charging, or directly power for car machine and vehicle mounted electrical apparatus, again when braking, be that car machine and vehicle mounted electrical apparatus are powered by boosting battery, and without the need to being directly power battery charging, also without the need to when braking occurs electric vehicle, electrokinetic cell should charge, power for car machine and vehicle mounted electrical apparatus again, and electrokinetic cell is only required to be motor and Che Nei interior environment system is powered, so, the performance of electrokinetic cell can not be affected, extend the service life of electrokinetic cell, simultaneously, because electrokinetic cell is without the need to boost charge, powered by electrokinetic cell again, electrokinetic cell is needed to carry out short time high-power charging, so, also improve recover kinetic energy and the utilization ratio of system.
In the embodiment of the present invention, circuit subsystem also comprises switch 6, switch 6 is arranged between wheel hub motor 1 and super capacitor 2 respectively, super capacitor 2 and boosting battery 3, between car machine 4 and vehicle mounted electrical apparatus 5, boosting battery 3 and between car machine 4 and vehicle mounted electrical apparatus 5.
By the setting of switch, can eaily realizing circuit connected sum disconnect.Such as, the switch between wheel hub motor and super capacitor is closed, namely can realize being communicated with of wheel hub motor and super capacitor, open it, namely can realize the disconnection of wheel hub motor and super capacitor.
In the embodiment of the present invention, switch 6 can be relay switch.
The automatic control to switch place circuit communication or disconnection can be realized by use relay switch.
In the embodiment of the present invention, described recover kinetic energy and utilize system also to comprise control subsystem, described control subsystem comprises: controller 7, car speed sensor 8 and braking sensor 9, the input end of controller 7 is connected with car speed sensor 8 and braking sensor 9 respectively, the mouth of controller 7 is connected with wheel hub motor 1 and relay switch respectively, car speed sensor 8 is connected with wheel hub motor 1, and braking sensor 9 is connected with brake equipment.
The control subsystem of said structure, its working process is:
During electric vehicle braking, the speed-slackening signal of the brake equipment that braking sensor gathers, and speed-slackening signal is transferred to controller, after controller receives speed-slackening signal, control wheel hub decelerating through motor, make wheel hub motor produce induced potential, car speed sensor gathers the restriction signal of described wheel hub motor, and restriction signal is transferred to controller, the relay switch that described controller controls between wheel hub motor and ultracapacitor closes, and makes induced potential be ultracapacitor charging; After described controller receives restriction signal, control boosting battery and the relay switch between car machine and vehicle mounted electrical apparatus close, and make boosting battery be that car machine and vehicle mounted electrical apparatus are powered; Meanwhile, control ultracapacitor and boosting battery, relay between car machine and vehicle mounted electrical apparatus disconnects;
When electric vehicle at the uniform velocity travels, car speed sensor gathers the at the uniform velocity signal of described wheel hub motor, and will at the uniform velocity Signal transmissions to controller, the relay switch that described controller controls between wheel hub motor and ultracapacitor disconnects, simultaneously, described controller controls ultracapacitor and boosting battery, relay switch between car machine and vehicle mounted electrical apparatus closes, and makes ultracapacitor be boosting battery charging, powers for car machine and vehicle mounted electrical apparatus; Meanwhile, described controller receives at the uniform velocity, and control boosting battery and the relay switch between car machine and vehicle mounted electrical apparatus disconnect.
By the control subsystem of said structure, the automatic control to system can be realized.
In the embodiment of the present invention, described circuit subsystem also comprises DC/DC conv 10, and the other end of super capacitor 2 is connected with boosting battery 3, car machine 4 and vehicle mounted electrical apparatus 5 respectively by DC/DC conv 10.
DC/DC conv is the electric pressure converter effectively exporting fixed voltage after changing input voltage.In the embodiment of the present invention, by using this electric pressure converter, the induced potential be stored in super capacitor can be exported to boosting battery, car machine and vehicle mounted electrical apparatus with fixed voltage.
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 positioned at the inner side of wheel hub motor 1.
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 also can be ternary lithium cell, but ferric phosphate lithium cell comparatively ternary lithium cell cost is low, easy care, and the cycle charging life-span is long.
Embodiment two
Embodiments provide a kind of electric vehicle recover kinetic energy and Application way, comprise the steps:
During electric vehicle braking, wheel hub motor produces induced potential, and described wheel hub motor is communicated with described ultracapacitor, for described ultracapacitor charges; Meanwhile, boosting battery is communicated with vehicle mounted electrical apparatus with car machine respectively, and described boosting battery is that described car machine and described vehicle mounted electrical apparatus are powered;
When electric vehicle at the uniform velocity travels, described ultracapacitor and described wheel hub motor disconnect, described boosting battery disconnects with described car machine and vehicle mounted electrical apparatus respectively, described ultracapacitor is communicated with vehicle mounted electrical apparatus with described boosting battery, car machine respectively, and described ultracapacitor is boosting battery charging, powers for described car machine and vehicle mounted electrical apparatus.
With prior art, it is directly power battery charging in electric vehicle braking kinetic energy recovery system, the super capacitor volume needed is large, space hold is large, the feature that manufacturing cost is high is compared, the system provided in the present embodiment, super capacitor is combined with boosting battery, and be super capacitor charging by the induced potential that braking produces, by super capacitor be boosting battery charging, or directly power for car machine and vehicle mounted electrical apparatus, again when braking, be that car machine and vehicle mounted electrical apparatus are powered by boosting battery, and without the need to being directly power battery charging, also without the need to when braking occurs electric vehicle, electrokinetic cell should charge, power for car machine and vehicle mounted electrical apparatus again, and electrokinetic cell is only required to be motor and Che Nei interior environment system is powered, so, the performance of electrokinetic cell can not be affected, extend the service life of electrokinetic cell, simultaneously, because electrokinetic cell is without the need to boost charge, powered by electrokinetic cell again, electrokinetic cell is needed to carry out short time high-power charging, so, also improve recover kinetic energy and the utilization ratio of system.
In a preferred embodiment of the present invention, automatic control can be realized by the following method:
During electric vehicle braking, the speed-slackening signal of the brake equipment that braking sensor gathers, and speed-slackening signal is transferred to controller, after controller receives speed-slackening signal, control wheel hub decelerating through motor, simultaneously, electrokinetic cell stops powering to wheel hub motor, wheel hub motor rotor is under the effect of inertia, do cutting magnetic induction line motion, wheel hub motor is made to produce induced potential, car speed sensor gathers the restriction signal of described wheel hub motor, and restriction signal is transferred to controller, the relay switch that described controller controls between wheel hub motor and ultracapacitor closes, induced potential is made to be ultracapacitor charging, after described controller receives restriction signal, control boosting battery and the relay switch between car machine and vehicle mounted electrical apparatus close, and make boosting battery be that car machine and vehicle mounted electrical apparatus are powered, meanwhile, control ultracapacitor and boosting battery, relay between car machine and vehicle mounted electrical apparatus disconnects,
When electric vehicle at the uniform velocity travels, car speed sensor gathers the at the uniform velocity signal of described wheel hub motor, and will at the uniform velocity Signal transmissions to controller, the relay switch that described controller controls between wheel hub motor and ultracapacitor disconnects, simultaneously, described controller controls ultracapacitor and boosting battery, relay switch between car machine and vehicle mounted electrical apparatus closes, and makes ultracapacitor be boosting battery charging, powers for car machine and vehicle mounted electrical apparatus; Meanwhile, described controller receives at the uniform velocity, and control boosting battery and the relay switch between car machine and vehicle mounted electrical apparatus disconnect.
By adopting technique scheme disclosed by the invention, obtain effect useful as follows: embodiments provide a kind of electric vehicle recover kinetic energy and utilize system and method, by one end of super capacitor is connected with described wheel hub motor, the other end of described super capacitor respectively with described boosting battery, described car machine is connected with described vehicle mounted electrical apparatus, described boosting battery is connected with described car machine and described vehicle mounted electrical apparatus respectively, when electric vehicle is braked, the induced potential that wheel hub motor produces is super capacitor charging, braking kinetic energy is made to be converted into power storage in super capacitor, when at the uniform velocity travelling, the electric energy stored in super capacitor is re-used, for car machine and vehicle mounted electrical apparatus are powered, it is boosting battery charging simultaneously, enable boosting battery when automobile brake, for car machine and vehicle mounted electrical apparatus are powered, thus to avoid be directly power battery charging, powered by electrokinetic cell again, electrokinetic cell is needed to carry out short time high-power charging, so, improve recover kinetic energy and the utilization ratio of system, in addition, because electrokinetic cell there will not be the excessive and boost charge phenomenon of instantaneous current, so the performance of electrokinetic cell can not be affected, and then the service life of electrokinetic cell is extended, meanwhile, adopt the system that the present embodiment provides, electrokinetic cell, without the need to powering for car machine and vehicle mounted electrical apparatus, also indirectly extends the service life of electrokinetic cell.
Each embodiment in this specification sheets all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Those skilled in the art it should be understood that the sequential of the method step that above-described embodiment provides can carry out accommodation according to actual conditions, also can carry out according to actual conditions are concurrent.
The hardware that all or part of step in the method that above-described embodiment relates to can carry out instruction relevant by program has come, described program can be stored in the storage medium that computer equipment can read, for performing all or part of step described in the various embodiments described above method.Described computer equipment, such as: Personal Computer, server, the network equipment, intelligent mobile terminal, intelligent home device, wearable intelligent equipment, vehicle intelligent equipment etc.; Described storage medium, such as: the storage of RAM, ROM, magnetic disc, tape, CD, flash memory, USB flash disk, portable hard drive, storage card, memory stick, the webserver, network cloud storage etc.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, commodity or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, commodity or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, commodity or the equipment comprising described key element and also there is other identical element.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should look protection scope of the present invention.
Claims (9)
1. an electric vehicle recover kinetic energy and utilize system, it is characterized in that, described recover kinetic energy and utilize system to comprise circuit subsystem, described circuit subsystem comprises: wheel hub motor, super capacitor, boosting battery, car machine and vehicle mounted electrical apparatus, one end of described super capacitor is connected with described wheel hub motor, the other end of described super capacitor is connected with described boosting battery, described car machine and described vehicle mounted electrical apparatus respectively, and described boosting battery is connected with described car machine and described vehicle mounted electrical apparatus respectively.
2. electric vehicle recover kinetic energy according to claim 1 and utilize system, it is characterized in that, described circuit subsystem also comprises switch, described switch is arranged between described wheel hub motor and described super capacitor respectively, described super capacitor and described boosting battery, between car machine and vehicle mounted electrical apparatus, described boosting battery and between described car machine and described vehicle mounted electrical apparatus.
3. electric vehicle recover kinetic energy according to claim 2 and utilize system, it is characterized in that, described switch is relay switch.
4. electric vehicle recover kinetic energy according to claim 3 and utilize system, it is characterized in that, described recover kinetic energy and utilize system also to comprise control subsystem, described control subsystem comprises: controller, car speed sensor and braking sensor, the input end of described controller is connected with described car speed sensor and described braking sensor respectively, the mouth of described controller is connected with described wheel hub motor and described relay switch respectively, described car speed sensor is connected with described wheel hub motor, and described braking sensor is connected with brake equipment.
5. electric vehicle recover kinetic energy according to claim 1 and utilize system, it is characterized in that, described circuit subsystem also comprises DC/DC conv, and the other end of described super capacitor is connected with described boosting battery, described car machine and described vehicle mounted electrical apparatus respectively by described DC/DC conv.
6. electric vehicle recover kinetic energy according to claim 1 and utilize system, it is characterized in that, described wheel hub motor is embedded in two front-wheels or trailing wheel, and described super capacitor is positioned at the inner side of described wheel hub motor.
7. electric vehicle recover kinetic energy according to claim 1 and utilize system, it is characterized in that, described boosting battery is ferric phosphate lithium cell.
8. electric vehicle recover kinetic energy and an Application way, is characterized in that, comprises the steps:
During electric vehicle braking, wheel hub motor produces induced potential, and described wheel hub motor is communicated with described ultracapacitor, for described ultracapacitor charges; Meanwhile, boosting battery is communicated with vehicle mounted electrical apparatus with car machine respectively, and described boosting battery is that described car machine and described vehicle mounted electrical apparatus are powered;
When electric vehicle at the uniform velocity travels, described ultracapacitor and described wheel hub motor disconnect, described boosting battery disconnects with described car machine and vehicle mounted electrical apparatus respectively, described ultracapacitor is communicated with vehicle mounted electrical apparatus with described boosting battery, car machine respectively, and described ultracapacitor is boosting battery charging, powers for described car machine and vehicle mounted electrical apparatus.
9. electric vehicle recover kinetic energy according to claim 8 and Application way, is characterized in that, realizes by the following method automatically controlling:
During electric vehicle braking, the speed-slackening signal of the brake equipment that braking sensor gathers, and speed-slackening signal is transferred to controller, after controller receives speed-slackening signal, control wheel hub decelerating through motor; Wheel hub motor is made to produce induced potential, car speed sensor gathers the restriction signal of described wheel hub motor, and restriction signal is transferred to controller, the relay switch that described controller controls between wheel hub motor and ultracapacitor closes, and makes induced potential be ultracapacitor charging; After described controller receives restriction signal, control boosting battery and the relay switch between car machine and vehicle mounted electrical apparatus close, and make boosting battery be that car machine and vehicle mounted electrical apparatus are powered; Meanwhile, control ultracapacitor and boosting battery, relay between car machine and vehicle mounted electrical apparatus disconnects;
When electric vehicle at the uniform velocity travels, car speed sensor gathers the at the uniform velocity signal of described wheel hub motor, and will at the uniform velocity Signal transmissions to controller, the relay switch that described controller controls between wheel hub motor and ultracapacitor disconnects, simultaneously, described controller controls ultracapacitor and boosting battery, relay switch between car machine and vehicle mounted electrical apparatus closes, and makes ultracapacitor be boosting battery charging, powers for car machine and vehicle mounted electrical apparatus; Meanwhile, described controller receives at the uniform velocity, and control boosting battery and the relay switch between car machine and vehicle mounted electrical apparatus disconnect.
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| CN113311346A (en) * | 2021-05-19 | 2021-08-27 | 北京车和家信息技术有限公司 | Battery cell early warning method and device, cloud platform and storage medium |
| CN117922305A (en) * | 2024-01-31 | 2024-04-26 | 吉林大学 | Electric automobile composite braking system and control method |
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| CN104309490A (en) * | 2014-09-16 | 2015-01-28 | 江苏科技大学 | Device and method for recovering brake energy of electric vehicle |
| CN104890529A (en) * | 2015-06-29 | 2015-09-09 | 河南工业大学 | Electric car |
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