CN107415702B - Braking energy recovery system and method for new energy automobile and new energy automobile - Google Patents
Braking energy recovery system and method for new energy automobile and new energy automobile Download PDFInfo
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- CN107415702B CN107415702B CN201710492830.4A CN201710492830A CN107415702B CN 107415702 B CN107415702 B CN 107415702B CN 201710492830 A CN201710492830 A CN 201710492830A CN 107415702 B CN107415702 B CN 107415702B
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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
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention provides a braking energy recovery system and a braking energy recovery method of a new energy automobile and the new energy automobile. The system comprises: the wheel braking system is used for converting the kinetic energy of the vehicle into mechanical energy and first heat energy during the wheel braking process; the mechanical energy recovery system is used for determining that the battery can absorb electric energy based on the charge state of the battery, determining convertible electric energy based on the mechanical energy and the energy conversion efficiency, and converting the mechanical energy into charging electric energy with the energy value equal to the convertible electric energy when the battery can absorb the electric energy and is more than or equal to the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery; and the thermoelectric conversion device is used for converting the first heat energy into auxiliary charging electric energy when the electric energy which can be absorbed by the battery is larger than the convertible electric energy. According to the embodiment of the invention, the electric energy of the battery can be supplemented by using the braking energy, and the recovery rate of the braking energy is improved.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a braking energy recovery system and a braking energy recovery method of a new energy automobile and the new energy automobile.
Background
The shortage of energy, the petroleum crisis and the environmental pollution are getting more and more severe, which brings great influence to the life of people and is directly related to the sustainable development of national economy and society. New energy technologies are actively developed in all countries of the world. New energy technologies are considered as an important approach to address energy crisis and environmental degradation. The new energy automobile can reduce the oil consumption, has low pollution and low noise, and is considered as an important way for solving the energy crisis and the environmental deterioration. On the premise of meeting the requirements of automobile dynamic property and driving range, the new energy automobile effectively improves fuel economy and reduces emission, and is considered as one of the effective paths of energy conservation and emission reduction at present.
Braking energy recovery is one of important technologies of new energy automobiles. In a general internal combustion engine automobile, when the automobile decelerates and brakes, the kinetic energy of the automobile is converted into heat energy through a braking system and is released to the atmosphere. On a new energy automobile, the wasted kinetic energy can be converted into electric energy through a braking energy recovery technology, stored in a storage battery and further converted into driving energy. The braking energy recovery is different according to different working modes of the new energy automobile.
In the related art, in the braking energy recovery, the charging and discharging of the battery are controlled by an energy control system. The impact of large current on a power battery in the process of recovering braking energy is generally divided by using a power type energy storage device (such as a super capacitor and a flywheel system) under the condition of high power and large current at present. However, in this embodiment, power management and flywheel management are added, the management system becomes complicated, and the control strategy becomes complicated.
In addition, in the prior art, the utilization of heat form lost energy is not considered, and whether the electric energy recovered and converted by the motor can be completely absorbed by a battery is not considered, so that the braking energy recovery rate is not high.
Disclosure of Invention
The invention aims to provide a braking energy recovery system and a braking energy recovery method of a new energy automobile and the new energy automobile, so that the braking energy recovery rate is improved.
A braking energy recovery system of a new energy automobile comprises:
the wheel braking system is used for converting the kinetic energy of the vehicle into mechanical energy and first heat energy during the wheel braking process;
the mechanical energy recovery system is used for determining that the battery can absorb electric energy based on the charge state of the battery, determining convertible electric energy based on the mechanical energy and the energy conversion efficiency, and converting the mechanical energy into charging electric energy with the energy value equal to the convertible electric energy when the battery can absorb the electric energy and is more than or equal to the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery;
and the thermoelectric conversion device is used for converting the first heat energy into auxiliary charging electric energy when the electric energy which can be absorbed by the battery is larger than the convertible electric energy.
In one embodiment:
a mechanical energy recovery system further for transferring the second thermal energy to the thermoelectric conversion device;
the thermoelectric conversion device is also used for converting the second heat energy into second auxiliary charging electric energy when the battery can absorb electric energy more than the sum of the convertible electric energy and the auxiliary charging electric energy.
In one embodiment:
the mechanical energy recovery system comprises a motor and a motor controller.
In one embodiment:
the thermoelectric conversion device comprises a hot end and a cold end, wherein the hot end absorbs first heat energy, the cold end is attached to the water tank, and a cooling water loop of the new energy automobile or an external independently designed cooling water loop is used for constructing a temperature difference between the cold end and the hot end so as to generate the auxiliary charging electric energy.
In one embodiment:
the thermoelectric conversion device comprises a hot end and a cold end, wherein the hot end absorbs first heat energy, the cold end is attached to the water tank, and a cooling water loop of the new energy automobile or an external independently designed cooling water loop is used for constructing a temperature difference between the cold end and the hot end so as to generate the second auxiliary charging electric energy.
In one embodiment:
wheel brake systems include drum brakes and disc brakes.
In one embodiment:
further comprising:
a battery management system for providing the battery state of charge to a mechanical energy recovery system.
A braking energy recovery method of a new energy automobile comprises the following steps:
converting vehicle kinetic energy into mechanical energy and first heat energy during wheel braking;
determining that the battery can absorb electric energy based on the state of charge of the battery, determining convertible electric energy based on mechanical energy and energy conversion efficiency, and converting the mechanical energy into charging electric energy with an energy value equal to the convertible electric energy when the battery can absorb the electric energy and is greater than or equal to the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery;
when the electric energy absorbed by the battery is larger than the convertible electric energy, the first heat energy is converted into auxiliary charging electric energy.
In one embodiment, the method further comprises:
when the battery can absorb electric energy which is larger than the sum of the convertible electric energy and the auxiliary charging electric energy, the second heat energy is converted into second auxiliary charging electric energy.
A new energy automobile comprises the braking energy recovery system of the new energy automobile.
As can be seen from the above technical solutions, in an embodiment of the present invention, a system includes: the wheel braking system is used for converting the kinetic energy of the vehicle into mechanical energy and first heat energy during the wheel braking process; the mechanical energy recovery system is used for determining that the battery can absorb electric energy based on the charge state of the battery, determining convertible electric energy based on the mechanical energy and the energy conversion efficiency, and converting the mechanical energy into charging electric energy with the energy value equal to the convertible electric energy when the battery can absorb the electric energy and is more than or equal to the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery; and the thermoelectric conversion device is used for converting the first heat energy into auxiliary charging electric energy when the electric energy which can be absorbed by the battery is larger than the convertible electric energy. Therefore, the embodiment of the invention can supplement the electric energy of the battery by using the braking energy, and improve the recovery rate of the braking energy.
In addition, the embodiment of the invention supplements the electric energy of the battery, and prolongs the service life of the battery.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
FIG. 1 is a schematic diagram of the braking energy recovery control of the new energy automobile according to the invention.
FIG. 2 is a structural diagram of a braking energy recovery system of a new energy automobile according to the invention.
FIG. 3 is a schematic diagram of the braking energy recovery system of the new energy automobile for realizing thermoelectric conversion according to the invention.
FIG. 4 is a flowchart of a method for recovering braking energy of a new energy automobile according to the invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout.
For simplicity and clarity of description, the invention will be described below by describing several representative embodiments. Numerous details of the embodiments are set forth to provide an understanding of the principles of the invention. It will be apparent, however, that the invention may be practiced without these specific details. Some embodiments are not described in detail, but rather are merely provided as frameworks, in order to avoid unnecessarily obscuring aspects of the invention. Hereinafter, "including" means "including but not limited to", "according to … …" means "at least according to … …, but not limited to … … only". In view of the language convention of chinese, the following description, when it does not specifically state the number of a component, means that the component may be one or more, or may be understood as at least one.
FIG. 1 is a schematic diagram of the braking energy recovery control of the new energy automobile according to the invention. As shown in fig. 1, the braking energy recovery control process of the new energy vehicle includes:
(1) the brake pedal is stepped on, the brake acts, and the kinetic energy of the vehicle is converted into mechanical energy and heat energy;
(2) the mechanical energy is converted into electric energy E through the motor, the electric energy E1 which can be converted is judged according to the parameters of the motor and the motor controller, and the electric energy E2 which can be absorbed by the battery is judged according to the state of the battery; if E2 is more than E1, the motor completely absorbs and converts the mechanical energy; if E2 < E1, a part of mechanical energy is converted into heat energy to be utilized;
(3) the heat energy converted from the kinetic energy of the vehicle is partially dissipated and partially collected for utilization, and the collected heat energy has the following applications according to the state of the battery:
(a) when the temperature of the battery is low, the battery is heated through the heat transfer device;
(b) if the battery capacity is low, the heat energy is converted into electric energy through the energy conversion device to charge the battery;
(c) preferentially heating the battery when the temperature and the capacity of the battery are in a severe state at the same time;
(d) when the temperature of the battery is high, the battery is radiated to the air through the heat conduction device.
In fig. 1, the vehicle energy control system and Vehicle Control Unit (VCU) are not shown: a Battery Management System (BMS) collects battery state parameters including current, voltage, temperature, capacity and other parameters; the whole vehicle energy control system judges the mechanical energy required to be absorbed by the motor according to BMS feedback; mechanical energy which is not absorbed by the motor is controlled by the VCU to enter the heat collecting device, and the battery is heated or charged according to previous BMS feedback judgment.
Based on the structure shown in fig. 1, fig. 2 is a structural diagram of a braking energy recovery system of a new energy automobile according to the invention.
As shown in fig. 2, the braking energy recovery system of the new energy automobile includes:
a wheel braking system 201 for converting vehicle kinetic energy into mechanical energy and first thermal energy during a wheel braking process;
the mechanical energy recovery system 202 is used for determining that the battery can absorb electric energy based on the charge state of the battery, determining convertible electric energy based on the mechanical energy and the energy conversion efficiency, and converting the mechanical energy into charging electric energy with the energy value equal to that of the convertible electric energy when the battery can absorb the electric energy and the convertible electric energy is more than or equal to that of the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery;
the thermoelectric conversion device 203 is used for converting the first heat energy into auxiliary charging electric energy when the battery can absorb more electric energy than the convertible electric energy.
The braking energy recovery system may further include: a battery management system for providing a battery state of charge to the mechanical energy recovery system.
In one embodiment:
a mechanical energy recovery system 202, further for transferring a second thermal energy to the thermoelectric conversion device;
the thermoelectric conversion device 203 is further configured to convert the second thermal energy into a second auxiliary charging electric energy when the battery can absorb electric energy more than the sum of the convertible electric energy and the auxiliary charging electric energy.
Preferably, the mechanical energy recovery system comprises a motor and a motor controller.
In one embodiment: the thermoelectric conversion device 203 comprises a hot end and a cold end, wherein the hot end absorbs the first heat energy, the cold end is tightly attached to the water tank, and a cooling water loop of the new energy automobile or a cooling water loop independently designed outside is used for constructing a temperature difference between the cold end and the hot end so as to generate the auxiliary charging electric energy.
In one embodiment: the thermoelectric conversion device 203 comprises a hot end and a cold end, wherein the hot end absorbs the first heat energy, the cold end is attached to the water tank, and a cooling water loop of the new energy automobile or an external independently designed cooling water loop is used for constructing a temperature difference between the cold end and the hot end so as to generate the second auxiliary charging electric energy.
Preferably, the wheel brake system includes a drum brake and a disc brake. Drum brakes can be classified into wheel cylinder type brakes and cam type brakes according to the type of a brake shoe expanding device. The wheel cylinder type brake uses a hydraulic brake wheel cylinder as a brake shoe actuating device, and is mostly adopted by a hydraulic brake system; the cam type brake uses a cam as an actuating device and is mostly adopted by a pneumatic braking system. The disc brake is of a hydraulic type and is controlled by hydraulic pressure, and main parts comprise a brake disc, a branch pump, a brake caliper, an oil pipe and the like. The disc brake has the advantages of fast heat dissipation, light weight, simple structure and convenient adjustment. Particularly, the high-temperature-resistant performance is good under high load, the braking effect is stable, the muddy water invasion is not feared, the car can drive in winter and in bad road conditions, the disc brakes adopted by many cars comprise a plane type braking disc, a punching type braking disc and a marking type braking disc, and the marking type braking disc has better braking effect and ventilation and heat dissipation capacity.
Therefore, the embodiment of the invention can supplement the electric energy of the battery by using the braking energy, and improve the recovery rate of the braking energy.
In addition, the embodiment of the invention supplements the electric energy of the battery, and prolongs the service life of the battery.
While the above exemplary description describes exemplary embodiments of a thermoelectric conversion device and a wheel braking system, those skilled in the art will appreciate that this description is exemplary only and is not intended to limit the scope of embodiments of the present invention.
FIG. 3 is a schematic diagram of the braking energy recovery system of the new energy automobile for realizing thermoelectric conversion according to the invention. The thermoelectric conversion shown in fig. 3 can be based on the braking energy recovery system of the new energy automobile shown in fig. 2.
In fig. 3, the braking energy recovery control process of the new energy vehicle includes:
(1) the brake pedal is stepped on, the brake acts, and the kinetic energy of the vehicle is converted into mechanical energy and first heat energy;
(2) the mechanical energy is converted into electric energy E through the motor, the electric energy E1 which can be converted is judged according to the parameters of the motor and the motor controller, and the electric energy E2 which can be absorbed by the battery is judged according to the state of the battery; if E2 is more than E1, the motor completely absorbs and converts the mechanical energy; if E2 < E1, converting a part of mechanical energy into second heat energy to be utilized;
(3) one part of the first heat energy is dissipated, the other part of the first heat energy is collected and utilized, and the collected heat energy has the following applications according to the state of the battery: if the battery capacity is low, the first heat energy is converted into electric energy through the energy conversion device to charge the battery;
(4) when the battery can absorb electric energy which is larger than the sum of the convertible electric energy and the auxiliary charging electric energy, the second heat energy is converted into second auxiliary charging electric energy.
In fig. 3, the vehicle energy control system and VCU are not shown: the BMS collects battery state parameters including current, voltage, temperature, capacity and other parameters; the whole vehicle energy control system judges the mechanical energy required to be absorbed by the motor according to BMS feedback; the mechanical energy which is not absorbed by the motor is controlled by the VCU to enter the heat collecting device, and the battery is charged according to the previous BMS feedback judgment.
Based on the description, the embodiment of the invention also provides a method for recovering the braking energy of the new energy automobile.
FIG. 4 is a flowchart of a method for recovering braking energy of a new energy automobile according to the invention.
As shown in fig. 4, the method includes:
step 401: converting vehicle kinetic energy into mechanical energy and first heat energy during wheel braking;
step 402: determining that the battery can absorb electric energy based on the state of charge of the battery, determining convertible electric energy based on mechanical energy and energy conversion efficiency, and converting the mechanical energy into charging electric energy with an energy value equal to the convertible electric energy when the battery can absorb the electric energy and is greater than or equal to the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery;
step 403: when the electric energy absorbed by the battery is larger than the convertible electric energy, the first heat energy is converted into auxiliary charging electric energy.
In one embodiment, the method further comprises:
when the battery can absorb electric energy which is larger than the sum of the convertible electric energy and the auxiliary charging electric energy, the second heat energy is converted into second auxiliary charging electric energy.
The braking energy recovery method of the new energy automobile provided by the embodiment of the invention can be applied to various types of new energy automobiles, including but not limited to: a pure electric vehicle, a hybrid vehicle or a fuel cell vehicle, etc.
In summary, in the embodiment of the present invention, the system includes: the wheel braking system is used for converting the kinetic energy of the vehicle into mechanical energy and first heat energy during the wheel braking process; the mechanical energy recovery system is used for determining that the battery can absorb electric energy based on the charge state of the battery, determining convertible electric energy based on the mechanical energy and the energy conversion efficiency, and converting the mechanical energy into charging electric energy with the energy value equal to the convertible electric energy when the battery can absorb the electric energy and is more than or equal to the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery; and the thermoelectric conversion device is used for converting the first heat energy into auxiliary charging electric energy when the electric energy which can be absorbed by the battery is larger than the convertible electric energy. Therefore, the embodiment of the invention can supplement the electric energy of the battery by using the braking energy, and improve the recovery rate of the braking energy.
In addition, the embodiment of the invention supplements the electric energy of the battery, and prolongs the service life of the battery.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention and is not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of the features without departing from the technical spirit of the present invention are included in the scope of the present invention.
Claims (6)
1. The utility model provides a braking energy recovery system of new energy automobile which characterized in that includes:
the wheel braking system is used for converting the kinetic energy of the vehicle into mechanical energy and first heat energy during the wheel braking process;
the mechanical energy recovery system is used for determining that the battery can absorb electric energy based on the charge state of the battery, determining convertible electric energy based on the mechanical energy and the energy conversion efficiency, and converting the mechanical energy into charging electric energy with the energy value equal to the convertible electric energy when the battery can absorb the electric energy and is more than or equal to the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery;
the thermoelectric conversion device is used for converting the first heat energy into auxiliary charging electric energy when the electric energy which can be absorbed by the battery is larger than the convertible electric energy; wherein:
a mechanical energy recovery system further for transferring the second thermal energy to the thermoelectric conversion device;
the thermoelectric conversion device is also used for converting the second heat energy into second auxiliary charging electric energy when the battery can absorb electric energy which is more than the sum of the convertible electric energy and the auxiliary charging electric energy;
the mechanical energy recovery system comprises a motor and a motor controller;
further comprising:
a battery management system for providing the battery state of charge to a mechanical energy recovery system.
2. The braking energy recovery system of the new energy automobile according to claim 1,
the thermoelectric conversion device comprises a hot end and a cold end, wherein the hot end absorbs first heat energy, the cold end is attached to the water tank, and a cooling water loop of the new energy automobile or an external independently designed cooling water loop is used for constructing a temperature difference between the cold end and the hot end so as to generate the auxiliary charging electric energy.
3. The braking energy recovery system of the new energy automobile according to claim 1,
the thermoelectric conversion device comprises a hot end and a cold end, wherein the hot end absorbs first heat energy, the cold end is attached to the water tank, and a cooling water loop of the new energy automobile or an external independently designed cooling water loop is used for constructing a temperature difference between the cold end and the hot end so as to generate the second auxiliary charging electric energy.
4. The braking energy recovery system of the new energy automobile according to claim 1, wherein the wheel braking system comprises a drum brake and a disc brake.
5. A braking energy recovery method of a new energy automobile is characterized by comprising the following steps:
converting vehicle kinetic energy into mechanical energy and first heat energy during wheel braking;
determining that the battery can absorb electric energy based on the state of charge of the battery, determining convertible electric energy based on mechanical energy and energy conversion efficiency, and converting the mechanical energy into charging electric energy with an energy value equal to the convertible electric energy when the battery can absorb the electric energy and is greater than or equal to the convertible electric energy; when the electric energy which can be absorbed by the battery is smaller than the convertible electric energy, converting the mechanical energy into charging electric energy and second heat energy, wherein the energy value of the charging electric energy is equal to the electric energy which can be absorbed by the battery;
when the electric energy which can be absorbed by the battery is larger than the convertible electric energy, the first heat energy is converted into auxiliary charging electric energy;
the method further comprises the following steps:
when the battery can absorb electric energy which is larger than the sum of the convertible electric energy and the auxiliary charging electric energy, the second heat energy is converted into second auxiliary charging electric energy.
6. A new energy automobile, characterized by comprising the braking energy recovery system of the new energy automobile of claim 1.
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| CN108544928B (en) * | 2018-03-29 | 2021-04-20 | 武汉菱电汽车电控系统股份有限公司 | Braking load control system, electric vehicle and braking load distribution method |
| CN109017324A (en) * | 2018-08-07 | 2018-12-18 | 郑州随意行科技有限公司 | A kind of new-energy automobile brake electricity recovery system |
| CN111717034A (en) * | 2020-05-14 | 2020-09-29 | 曹晟 | Energy recovery system of new energy hybrid electric vehicle |
| CN113400945A (en) * | 2021-07-21 | 2021-09-17 | 安徽江淮汽车集团股份有限公司 | Energy recovery control method for pure electric vehicle |
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