CN113183765A - Servo energy storage mechanism for electric vehicle and control method thereof - Google Patents
Servo energy storage mechanism for electric vehicle and control method thereof Download PDFInfo
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- CN113183765A CN113183765A CN202110676584.4A CN202110676584A CN113183765A CN 113183765 A CN113183765 A CN 113183765A CN 202110676584 A CN202110676584 A CN 202110676584A CN 113183765 A CN113183765 A CN 113183765A
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- 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
- B60L7/18—Controlling the braking effect
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- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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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
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses a servo energy storage mechanism for an electric vehicle and a control method thereof, wherein the energy storage mechanism stores energy by utilizing the rotational kinetic energy of a rotational component of an energy storage motor and an energy storage flywheel, converts the energy braked by the whole vehicle into the rotational kinetic energy of an energy storage motor rotor and the energy storage flywheel arranged on a shaft for temporary storage at high efficiency and high power through a whole vehicle servo driver or a frequency converter, and then converts the energy stored by the energy storage flywheel into electric energy to be efficiently stored in a whole vehicle battery or a whole vehicle power supply and utilization device for use by the electric vehicle, or converts the energy stored by the energy storage flywheel into the electric energy to drive the electric vehicle to run by using higher power. The energy storage mechanism can store and release electric energy with high efficiency in a short time so as to achieve the purpose of saving energy.
Description
Technical Field
The invention relates to the technical field of electric vehicles, in particular to a servo type energy storage mechanism for an electric vehicle and a control method thereof.
Background
When an electric vehicle brakes, a two-stage braking state is generally classified: the first stage is electric braking, the driver performs braking by performing reverse driving torque control on the motor, and kinetic energy of the vehicle is converted into electric energy to enter a common direct current bus. The second stage is mechanical braking, which dissipates the kinetic energy of the vehicle directly to the brake. For better energy saving, the whole vehicle control strategy always tends to recover energy as much as possible by using an electric braking function under the condition of ensuring the braking effect so as to achieve the aim of saving energy.
The charging and discharging multiplying power of the power battery of the electric vehicle is limited, the charging instantaneous power of the battery is limited, when the electric braking function of the electric vehicle converts kinetic energy into electric energy and sends the electric energy into the public direct-current bus, the battery charging system can not store the electric energy into the battery rapidly and efficiently, when the electric energy power fed back by braking is too large, the energy storage efficiency is reduced because of high-power charging energy storage, or the electric energy is not stored in time and is consumed through the energy discharge resistor after the bus voltage is promoted so as to ensure the system safety. The general vehicle control strategy is that when the above condition occurs, the brake still depends on mechanical brake to consume a large amount, i.e. the brake energy can not be fully recovered. Because the charging efficiency and the discharging efficiency of the battery are not high, the efficiency of large-current charging and discharging is lower, and the energy recycling efficiency of the traditional scheme is lower.
Disclosure of Invention
The invention aims to solve the problem of low energy recycling efficiency of the existing electric vehicle, and provides a servo type energy storage mechanism for the electric vehicle and a control method thereof, wherein the servo type energy storage mechanism has high electric energy storage and electric energy taking efficiency and good economical efficiency.
In order to solve the problems, the invention is realized by the following technical scheme:
a servo energy storage mechanism for an electric vehicle comprises an incoming line filter capacitor, a power module, an energy storage motor, an energy storage flywheel, a voltage sampling module, a current sampling module, a detection unit and an operation and control module; the incoming line filter capacitor is bridged on the common direct current bus; one side of the public direct current bus is divided into two paths, one path is connected with a direct current bus of a finished automobile servo driver or a finished automobile frequency converter, and the other path is connected with a finished automobile battery through a finished automobile battery charging and discharging unit; the other side of the common direct current bus is connected with a direct current bus of the power module; the output end of the power module is connected with the energy storage motor; the energy storage flywheel is connected to a rotating shaft of the energy storage motor; the voltage sampling module is connected in parallel with a common direct current bus between the incoming line filter capacitor and the power module; the current sampling module is connected in series between the power module and the energy storage motor; the detection unit is arranged on a rotating shaft of the energy storage motor; the output ends of the voltage sampling module, the current sampling module and the detection unit are connected with the input end of the operation and control module; the output end of the operation and control module is connected with the control end of the power module.
In the above scheme, the energy storage motor is a synchronous energy storage motor or an asynchronous energy storage motor.
In the above scheme, the detection unit is a speed detection unit and/or a position detection unit.
In the above scheme, the energy storage flywheel is connected with the rotating shaft of the energy storage motor through the speed increasing mechanism.
The control method of the servo energy storage mechanism for the electric vehicle, which is realized by the servo energy storage mechanism, comprises the following specific processes:
when a whole vehicle servo driver or a frequency converter implements electric braking on a whole vehicle driving motor, kinetic energy from the whole vehicle is converted into electric energy to feed back the electric energy into a common direct current bus, so that the voltage of the common direct current bus starts to rise from a normal value U0; when the voltage of the common direct current bus rises to a first preset value U1, the whole vehicle battery charging and discharging unit is switched to a state of charging a whole vehicle battery;
when the power of the electric energy fed back to the common direct current bus by the whole vehicle servo driver or the frequency converter is larger than the power charged to the whole vehicle battery by the whole vehicle battery charging and discharging unit, the voltage of the common direct current bus continuously rises; when the voltage of the common direct current bus rises to be higher than a second preset value U2, the servo energy storage mechanism starts to work, the power module outputs driving torque in the same direction as the preset rotation direction of the energy storage motor to drive the energy storage motor to rotate under the control of the operation and control module, and the electric energy on the common direct current bus is converted into kinetic energy to be stored on a rotating shaft system formed by the energy storage motor and the energy storage flywheel;
when the whole vehicle stops running in a braking state, electric energy on the common direct current bus is consumed by a whole vehicle servo driver or a frequency converter to drive the whole vehicle to run, and the voltage of the common direct current bus begins to drop; when the voltage of the common direct current bus is reduced to be lower than a second preset value U2, the power module outputs a driving torque opposite to the current rotation direction of the energy storage motor to drive the energy storage motor to brake under the control of the operation and control module, the kinetic energy stored on a rotating shaft system formed by the energy storage motor and the energy storage flywheel is converted into electric energy to be sent to the common direct current bus, the electric energy drives the whole vehicle driving motor through a whole vehicle servo driver or a frequency converter, and a whole vehicle battery is charged through a whole vehicle battery charging and discharging unit;
when the kinetic energy of a rotating shaft system formed by the energy storage motor and the energy storage flywheel is completely converted into electric energy to be sent to the common direct current bus, the speed of the energy storage motor is reduced to 0 speed, and the servo type energy storage mechanism stops working; at the moment, if the whole vehicle drive continues to pass through a whole vehicle servo driver or a frequency converter and a whole vehicle battery consumes electric energy on the common direct current bus through a whole vehicle battery charging and discharging unit, the voltage of the common direct current bus continues to drop;
when the voltage of the common direct current bus is reduced to a first preset value U1, the charging and discharging unit of the finished automobile battery stops charging the finished automobile battery; when the voltage of the common direct current bus is continuously reduced to a normal value U0, the whole vehicle battery charging and discharging unit is switched to a state that the whole vehicle battery takes electricity to discharge to the direct current bus, the electricity taken from the whole vehicle battery is sent to the common direct current bus, and the electricity drives the whole vehicle driving motor through a whole vehicle servo driver or a frequency converter.
In the above scheme, the operation and control module of the servo energy storage mechanism outputs the driving torque of the energy storage motor according to the current voltage value U of the common dc bus collected by the voltage sampling module, that is:
firstly, calculating a difference value delta U between a current voltage value U and a second preset value U2, wherein the delta U is U-U2; and performing PID operation on the difference value delta U, wherein the output value of the PID operation is used as the torque setting of the energy storage motor: when the output value of the PID operation is positive, the energy storage motor is driven to run in an accelerated manner through the power module; when the output value of the PID operation is negative and the rotating speed of the energy storage motor is not 0, the power module drives the energy storage motor to rotate in a speed reduction mode; and when the output value of the PID operation is negative and the rotating speed of the energy storage motor is 0, the power module stops outputting the energy storage motor and clears the integral quantity of the PID operation.
Compared with the prior art, the invention provides the energy storage mechanism which stores energy by utilizing the rotational kinetic energy of the energy storage motor and the rotating part of the energy storage flywheel, converts the energy braked by the whole vehicle into the rotational kinetic energy of the energy storage motor rotor and the energy storage flywheel arranged on the shaft for temporary storage at high efficiency and high power through the whole vehicle servo driver or the frequency converter, and then converts the energy stored by the energy storage flywheel into electric energy at controlled power to be efficiently stored to a whole vehicle battery or a whole vehicle power supply device for use, or converts the energy stored by the energy storage flywheel back to the electric energy to drive the electric vehicle to run at higher power. The energy storage mechanism can store and release electric energy with high efficiency in a short time so as to achieve the purpose of saving energy.
Drawings
Fig. 1 is a schematic structural diagram of a servo energy storage mechanism for an electric vehicle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to specific examples.
When a whole vehicle servo driver or a frequency converter controls a whole vehicle driving motor and a load thereof to execute four-quadrant operation, when the output torque of the whole vehicle driving motor is the same as the rotation direction of the whole vehicle driving motor, the whole vehicle driving motor is in a motor state, and the whole vehicle servo driver or the frequency converter converts electric energy into kinetic energy of the whole vehicle driving motor for output; when the output torque of the entire vehicle driving motor is opposite to the rotation direction of the entire vehicle driving motor, the entire vehicle driving motor is in a generator state, and the entire vehicle servo driver or the frequency converter converts the kinetic energy of the motor into electric energy. The technology provides a possibility that kinetic energy can be temporarily stored by additionally arranging an energy storage motor and additionally arranging an inertia disc, namely an energy storage flywheel, on a rotor of the energy storage motor, electric energy is converted into kinetic energy for temporary storage in a power-controlled manner, the kinetic energy is quickly converted back to be used when a whole vehicle is driven, or the kinetic energy is slowly and controllably converted into the electric energy to be efficiently stored in a battery of the whole vehicle.
Accordingly, the present invention provides a servo energy storage mechanism for an electric vehicle, which is mainly composed of an incoming line filter capacitor, a power module, an energy storage motor, an energy storage flywheel, a voltage sampling module, a current sampling module, a detection unit, and an operation and control module, as shown in fig. 1. The AC side of the vehicle servo driver or the frequency converter which generates electric energy externally is connected with a vehicle driving motor (not shown in the figure), and the DC side is connected with the invention through a common DC bus. One side of a whole vehicle battery charging and discharging unit used for taking electric energy from a whole vehicle battery or storing the electric energy to the whole vehicle battery is connected with the whole vehicle battery, and the other side of the whole vehicle battery charging and discharging unit is connected with the device provided by the invention through a common direct current bus. The incoming line filter capacitor is bridged on the positive and negative electrodes of the common direct current bus. The power module is a three-phase alternating current inversion power circuit, is connected between the public direct current bus and the current sampling module, is controlled by the operation and control module, and is used for driving the energy storage motor to operate in a motor state or a generator state. And the rotating shaft of the energy storage motor is connected with an energy storage flywheel for storing kinetic energy. The energy storage motor is a synchronous energy storage motor or an asynchronous energy storage motor. The energy storage flywheel can be connected with a rotating shaft of the energy storage motor through the speed increasing mechanism so as to increase the rotating speed of the energy storage flywheel and increase the energy storage capacity. The voltage sampling module collects the voltage of the public direct current bus and sends the voltage to the operation and control module, and the operation and control module is used for controlling the energy storage or energy release process of the energy storage mechanism according to the voltage of the public direct current bus. The current sampling module is connected between the power module and the energy storage motor and used for detecting three-phase current and feeding the three-phase current back to the operation and control module to implement closed-loop control. The detection unit is a speed detection unit (corresponding to the asynchronous energy storage motor) and/or a position detection unit (corresponding to the synchronous energy storage motor), and is arranged on a rotating shaft of the energy storage motor and used for detecting the speed and/or the position of a rotor of the energy storage motor and feeding the speed and/or the position back to the operation and control module to implement closed-loop control.
The energy storage and release of the energy storage mechanism are controlled according to the voltage of the common direct current bus. At this time, a common dc bus voltage value U2 needs to be set, and when the common dc bus voltage rises above this value, the power module of the energy storage mechanism controls the energy storage motor to output a driving torque in the same direction as the rotation direction of the energy storage motor, so as to push the energy storage motor and the energy storage flywheel to rotate at an accelerated speed, and convert the electric energy into a rotation axis system formed by the energy storage motor and the energy storage flywheel. When the voltage of the common direct current bus is reduced to be lower than the value, the power module of the energy storage mechanism controls the energy storage motor to output driving torque opposite to the rotation direction of the energy storage motor, the energy storage motor and the energy storage flywheel are pushed to perform deceleration braking, and the stored kinetic energy is converted into electric energy to be sent to the common direct current bus.
The control method of the servo energy storage mechanism for the electric vehicle, which is realized by the servo energy storage mechanism, comprises the following specific processes:
when the whole vehicle servo driver or the frequency converter applies electric braking to a whole vehicle driving motor (not shown in the figure), kinetic energy from the electric vehicle is converted into electric energy to feed back into the common direct current bus, so that the voltage of the common direct current bus starts to rise from the normal U0. When the voltage of the common direct current bus rises to a preset value of U1, the whole vehicle battery charging and discharging unit is converted into a state of charging a whole vehicle battery to recover electric energy. In order to ensure the charging efficiency, the power charged by the vehicle battery charging and discharging unit to the vehicle battery is usually limited, and when the power fed back to the electric energy of the common direct current bus by the vehicle servo driver or the frequency converter is larger than the power charged by the vehicle battery charging and discharging unit to the vehicle battery, the voltage of the common direct current bus can continuously rise. When the voltage of the common direct current bus rises to be higher than U2, the energy storage mechanism starts to drive the energy storage motor, and converts electric energy into kinetic energy to be stored on a rotating shaft system formed by an energy storage motor rotor and an energy storage flywheel.
When the whole vehicle stops running in the braking state, the electric energy on the common direct current bus is consumed by the whole vehicle servo driver or the frequency converter to drive the whole vehicle to run, and before the voltage of the common direct current bus is reduced to U1, the whole vehicle battery charging and discharging unit is also in a state of taking the electric energy from the common direct current bus to charge the whole vehicle battery to recover the electric energy. When the voltage of the common direct current bus has a falling trend from U2, the energy storage mechanism converts the kinetic energy stored by the energy storage motor and the energy storage flywheel into electric energy to be sent to the common direct current bus, the electric energy drives the whole vehicle driving motor through a whole vehicle servo driver or a frequency converter, and meanwhile, the whole vehicle battery is continuously charged through a whole vehicle battery charging and discharging unit.
When the kinetic energy stored by the energy storage motor and the energy storage flywheel is consumed, the energy storage mechanism stops working. At this time, if the whole vehicle drive continues to consume the electric energy on the common direct current bus through the whole vehicle servo driver or the frequency converter and the whole vehicle battery through the whole vehicle battery charging and discharging unit, the voltage of the common direct current bus continues to drop. When the voltage of the common direct current bus is reduced to a first preset value U1, the whole vehicle battery charging and discharging unit stops charging the whole vehicle battery. When the voltage of the common direct current bus is reduced to U0, the whole vehicle battery charging and discharging unit takes electric energy from the whole vehicle battery to supply power to the common direct current bus, and the electric energy drives the whole vehicle driving motor through a whole vehicle servo driver or a frequency converter.
And after the operation and control module detects the voltage U of the common direct current bus, the operation and control module performs PID on the delta U-U2, and the PID output value is set as the torque of the energy storage motor. When the PID output is positive, the energy storage motor is driven by the power module to operate and accelerate; when the PID output is negative, if the rotating speed of the energy storage motor is not 0, the energy storage motor is driven to decelerate through the power module, and if the rotating speed of the energy storage motor is 0, the power module stops working, namely stops outputting to the energy storage motor, and clears the integral quantity of the PID.
Because the rotating mechanism on the motor shaft has limited mass and cannot infinitely increase speed, the energy storage mechanism cannot continuously inject and store energy. When the electric vehicle runs, because of the working cycle of periodic acceleration and braking, the whole vehicle servo driver or the frequency converter is periodically in power generation or power utilization cycle, and the whole vehicle battery charging and discharging device is periodically in discharging or charging cycle, at the moment, the energy storage mechanism can efficiently store electric energy and release electric energy in a short time, so as to achieve the purpose of saving energy.
It should be noted that, although the above-mentioned embodiments of the present invention are illustrative, the present invention is not limited thereto, and thus the present invention is not limited to the above-mentioned embodiments. Other embodiments, which can be made by those skilled in the art in light of the teachings of the present invention, are considered to be within the scope of the present invention without departing from its principles.
Claims (6)
1. A servo energy storage mechanism for an electric vehicle is characterized by comprising an incoming line filter capacitor, a power module, an energy storage motor, an energy storage flywheel, a voltage sampling module, a current sampling module, a detection unit and an operation and control module;
the incoming line filter capacitor is bridged on the common direct current bus; one side of the public direct current bus is divided into two paths, one path is connected with a direct current bus of a finished automobile servo driver or a finished automobile frequency converter, and the other path is connected with a finished automobile battery through a finished automobile battery charging and discharging unit; the other side of the common direct current bus is connected with a direct current bus of the power module; the output end of the power module is connected with the energy storage motor; the energy storage flywheel is connected to a rotating shaft of the energy storage motor;
the voltage sampling module is connected in parallel with a common direct current bus between the incoming line filter capacitor and the power module; the current sampling module is connected in series between the power module and the energy storage motor; the detection unit is arranged on a rotating shaft of the energy storage motor; the output ends of the voltage sampling module, the current sampling module and the detection unit are connected with the input end of the operation and control module; the output end of the operation and control module is connected with the control end of the power module.
2. The servo energy storage mechanism of claim 1, wherein the energy storage motor is a synchronous energy storage motor or an asynchronous energy storage motor.
3. The servo energy storage mechanism for electric vehicle as claimed in claim 1, wherein the detecting unit is a speed detecting unit and/or a position detecting unit.
4. The servo energy storage mechanism of claim 1, wherein the energy storage flywheel is connected to the rotating shaft of the energy storage motor through a speed increasing mechanism.
5. The servo energy storage mechanism of claim 1, wherein the servo energy storage mechanism comprises the following steps:
when a whole vehicle servo driver or a frequency converter implements electric braking on a whole vehicle driving motor, kinetic energy from the whole vehicle is converted into electric energy to feed back the electric energy into a common direct current bus, so that the voltage of the common direct current bus starts to rise from a normal value U0; when the voltage of the common direct current bus rises to a first preset value U1, the whole vehicle battery charging and discharging unit is switched to a state of charging a whole vehicle battery;
when the power of the electric energy fed back to the common direct current bus by the whole vehicle servo driver or the frequency converter is larger than the power charged to the whole vehicle battery by the whole vehicle battery charging and discharging unit, the voltage of the common direct current bus continuously rises; when the voltage of the common direct current bus rises to be higher than a second preset value U2, the servo energy storage mechanism starts to work, the power module outputs driving torque in the same direction as the preset rotation direction of the energy storage motor to drive the energy storage motor to rotate under the control of the operation and control module, and the electric energy on the common direct current bus is converted into kinetic energy to be stored on a rotating shaft system formed by the energy storage motor and the energy storage flywheel;
when the whole vehicle stops running in a braking state, electric energy on the common direct current bus is consumed by a whole vehicle servo driver or a frequency converter to drive the whole vehicle to run, and the voltage of the common direct current bus begins to drop; when the voltage of the common direct current bus is reduced to be lower than a second preset value U2, the power module outputs a driving torque opposite to the current rotation direction of the energy storage motor to drive the energy storage motor to brake under the control of the operation and control module, the kinetic energy stored on a rotating shaft system formed by the energy storage motor and the energy storage flywheel is converted into electric energy to be sent to the common direct current bus, the electric energy drives the whole vehicle driving motor through a whole vehicle servo driver or a frequency converter, and a whole vehicle battery is charged through a whole vehicle battery charging and discharging unit;
when the kinetic energy of a rotating shaft system formed by the energy storage motor and the energy storage flywheel is completely converted into electric energy to be sent to the common direct current bus, the speed of the energy storage motor is reduced to 0 speed, and the servo type energy storage mechanism stops working; at the moment, if the whole vehicle drive continues to pass through a whole vehicle servo driver or a frequency converter and a whole vehicle battery consumes electric energy on the common direct current bus through a whole vehicle battery charging and discharging unit, the voltage of the common direct current bus continues to drop;
when the voltage of the common direct current bus is reduced to a first preset value U1, the charging and discharging unit of the finished automobile battery stops charging the finished automobile battery; when the voltage of the common direct current bus is continuously reduced to a normal value U0, the whole vehicle battery charging and discharging unit is switched to a state that the whole vehicle battery takes electricity to discharge to the direct current bus, the electricity taken from the whole vehicle battery is sent to the common direct current bus, and the electricity drives the whole vehicle driving motor through a whole vehicle servo driver or a frequency converter.
6. The method as claimed in claim 5, wherein the operation and control module of the servo energy storage mechanism outputs the driving torque of the energy storage motor according to the current voltage value U of the common dc bus collected by the voltage sampling module, that is:
firstly, calculating a difference value delta U between a current voltage value U and a second preset value U2, wherein the delta U is U-U2; and performing PID operation on the difference value delta U, wherein the output value of the PID operation is used as the torque setting of the energy storage motor: when the output value of the PID operation is positive, the energy storage motor is driven to run in an accelerated manner through the power module; when the output value of the PID operation is negative and the rotating speed of the energy storage motor is not 0, the power module drives the energy storage motor to rotate in a speed reduction mode; and when the output value of the PID operation is negative and the rotating speed of the energy storage motor is 0, the power module stops outputting the energy storage motor and clears the integral quantity of the PID operation.
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| FR2756118A1 (en) * | 1996-11-20 | 1998-05-22 | Moteurs Fox | Electric drive with flywheel energy storage for battery powered motor vehicles |
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| CN206412890U (en) * | 2017-02-14 | 2017-08-15 | 盾石磁能科技有限责任公司 | Flywheel common DC bus type energy saving system of elevator |
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2021
- 2021-06-18 CN CN202110676584.4A patent/CN113183765B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2756118A1 (en) * | 1996-11-20 | 1998-05-22 | Moteurs Fox | Electric drive with flywheel energy storage for battery powered motor vehicles |
| JP2000287390A (en) * | 1999-03-30 | 2000-10-13 | Mitsubishi Electric Corp | Energy storing and discharging device |
| CN101734166A (en) * | 2008-11-12 | 2010-06-16 | 满永奎 | Flywheel energy storage device applied to electric automobile |
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| CN113183765B (en) | 2022-05-17 |
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