CN215621461U - Fill electric pile and fill electric pile system - Google Patents
Fill electric pile and fill electric pile system Download PDFInfo
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- CN215621461U CN215621461U CN202120695106.3U CN202120695106U CN215621461U CN 215621461 U CN215621461 U CN 215621461U CN 202120695106 U CN202120695106 U CN 202120695106U CN 215621461 U CN215621461 U CN 215621461U
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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
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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Abstract
The utility model relates to the technical field of electric vehicle charging and discharging, and provides a charging pile and a charging pile system, wherein the charging pile comprises: the charging pile comprises an alternating current-direct current conversion device, an energy storage device and a charging pile body; the input end of the alternating current-direct current conversion device is connected with an alternating current power supply, and the output end of the alternating current-direct current conversion device is connected with the input end of the energy storage device; fill the electric pile body, the input is connected with energy memory's output, and the output is used for charging for electric equipment. In the utility model, when the electricity price is low, the electric energy can be stored in the energy storage device in a slow charging mode, when the electric equipment needs to be charged, the energy storage device is quickly discharged to charge the electric equipment, the charging speed is high, the impact on a power grid can not be brought, the low-ebb charging can be utilized, the advantages of direct current quick charging and alternating current slow charging are integrated, and the actual application requirement can be met.
Description
Technical Field
The utility model belongs to the technical field of electric vehicle charging and discharging, and particularly relates to a charging pile and a charging pile system.
Background
With the increasing global environment situation, new energy vehicles represented by electric vehicles are gradually accepted by the market by virtue of the advantages of zero pollution, zero noise, simple driving and the like.
At present, the domestic charging modes of the whole automobile mainly comprise a direct current fast charging mode and an alternating current slow charging mode. The direct current quick charging efficiency is high, but the direct current quick charging efficiency has impact on public power grid equipment, and the power supply quality and safety are influenced. Exchange and fill charging efficiency slowly and hang down, usable low ebb electricity charges, and is with low costs, but the charge time overlength is difficult to satisfy the demand that the vehicle resumes the operation in short time. The two charging modes have respective disadvantages and cannot meet the requirements of practical application.
SUMMERY OF THE UTILITY MODEL
In view of this, embodiments of the present invention provide a charging pile and a charging pile system, so as to solve the problem that in the prior art, two charging modes, namely a direct current fast charging mode and an alternating current slow charging mode, have respective disadvantages and cannot meet the requirements of practical applications.
A first aspect of an embodiment of the present invention provides a charging pile, including: the charging pile comprises an alternating current-direct current conversion device, an energy storage device and a charging pile body;
the input end of the alternating current-direct current conversion device is connected with an alternating current power supply, and the output end of the alternating current-direct current conversion device is connected with the input end of the energy storage device;
fill the electric pile body, the input is connected with energy memory's output, and the output is used for charging for electric equipment.
Optionally, the energy storage device comprises: the battery energy storage module and the flywheel energy storage module;
the input end and the output end of the battery energy storage module are respectively connected with the input end of the energy storage device and the input end of the flywheel energy storage module;
the output end of the flywheel energy storage module is connected with the output end of the energy storage device.
Optionally, the battery energy storage module includes: a battery unit and a first switch;
and the input and output ends of the storage battery unit are connected with the input and output ends of the battery energy storage module through the first switch.
Optionally, the flywheel energy storage module comprises: at least one flywheel energy storage unit;
and the input end of each flywheel energy storage unit is connected with the input end of the flywheel energy storage module, and the output end of each flywheel energy storage unit is connected with the output end of the flywheel energy storage module.
Optionally, the flywheel energy storage unit includes: the flywheel battery, the second switch and the third switch;
and the input end of the flywheel battery is connected with the input end of the flywheel energy storage unit through a second switch, and the output end of the flywheel battery is connected with the output end of the flywheel energy storage unit through a third switch.
Optionally, fill electric pile and still include: a fourth switch;
the output end of the AC/DC conversion device is connected with the input end of the energy storage device through a fourth switch.
Optionally, fill electric pile and still include: a fifth switch;
and the first end of the fifth switch is connected with the output end of the charging pile body, and the second end of the fifth switch is used for charging the electric equipment.
Optionally, fill electric pile and still include: a wind-solar power generation device;
the output end of the wind-solar power generation device is connected with the input end of the alternating current-direct current conversion device.
A second aspect of the embodiment of the present invention provides a charging pile system, including the charging pile provided in the first aspect of the embodiment of the present invention.
The embodiment of the utility model provides a charging pile, which comprises: the charging pile comprises an alternating current-direct current conversion device, an energy storage device and a charging pile body; the input end of the alternating current-direct current conversion device is connected with an alternating current power supply, and the output end of the alternating current-direct current conversion device is connected with the input end of the energy storage device; fill the electric pile body, the input is connected with energy memory's output, and the output is used for charging for electric equipment. In the embodiment of the utility model, when the electricity price is low, the electric energy can be stored in the energy storage device in a slow charging mode, when the electric equipment needs to be charged, the energy storage device is quickly discharged to charge the electric equipment, the charging speed is high, the impact on a power grid is avoided, the low-price charging can be utilized, the advantages of direct current quick charging and alternating current slow charging are integrated, and the actual application requirement can be met.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic circuit diagram of a charging pile according to an embodiment of the present invention;
fig. 2 is a schematic circuit structure diagram of a second charging pile according to an embodiment of the present invention;
fig. 3 is a schematic circuit structure diagram of a third charging pile according to an embodiment of the present invention;
fig. 4 is a schematic circuit structure diagram of a fourth charging pile according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the utility model. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
With the increasing global environment situation, new energy vehicles represented by electric vehicles are gradually accepted by the market by virtue of the advantages of zero pollution, zero noise, simple driving and the like. By the early 2020, the reserves of pure electric vehicles in China reach 322 thousands of vehicles, the market of electric vehicles shows a rapid expansion trend, but the development of the electric vehicle industry is severely restricted by the insufficient number of charging piles. At present, the development lag of charging facilities still remains one of the main problems hindering the development of the new energy automobile industry in China, and the problems of vehicle-presence and pile-absence, pile-presence and vehicle-absence, mileage anxiety and the like still exist, and the inconvenience of the charging mode inhibits the charging consumption demand and slows down the development of the new energy automobile market.
From the aspect of charging modes, the main charging modes of the existing new energy automobile include whole automobile charging, centralized battery replacement and wireless charging. At present, the whole vehicle charging technology is mainly used at home and abroad, and the battery replacement mode is tried in partial conditional areas and fields. However, emerging technologies such as wireless charging technology, graphene batteries, and super graphene have not been applied in large scale for various reasons.
At present, the domestic charging mode of the whole vehicle mainly comprises a direct current quick charging mode and an alternating current slow charging mode;
the quick charging adopts direct current charging, the charging power is higher than 30kW, the power battery can be charged by 50-80% in 20-30 min, and the battery technology endurance requirement at present can be met. The quick charging pile is built by relying on a quick charging station, has the advantages of short charging time, quick flow of charging vehicles, saving of the area of a charging station parking lot and the like, and is mainly suitable for the fields of operation, such as public transport, renting, sanitation, commuting buses and logistics vehicles. However, the quick charging also has the following disadvantages: the charging efficiency is low, and the manufacturing, installation and working costs of the charger are high; the charging current is large, the technical requirements on the battery and charging equipment are high, the influence on the power and the service life of the vehicle battery is large, and potential safety hazards exist; the high-current charging can also impact public power grid equipment, and the power supply quality and safety are influenced.
The slow charging belongs to alternating current charging, the charging power is small, generally 3.3-7 kW, and the charging time is generally 5-8 h; the slow pile filling cost is low, and the installation is convenient; the low-ebb electricity can be used for charging, so that the charging cost is reduced; and the charging current is small and the voltage is relatively stable in the charging period, so that the safety of the power battery pack is ensured and the service life of the power battery is prolonged, and the slow charging is suitable for non-operation fields, such as basic charging of private cars and logistics cars. However, the slow charging time is too long, and the requirement of the short-time recovery of the vehicle is difficult to meet.
The direct current quick charging efficiency is high, but the direct current quick charging efficiency has impact on public power grid equipment, and the power supply quality and safety are influenced; meanwhile, the investment for constructing and transforming a power distribution network required by the requirement of high-capacity charging is large. Exchange and fill charging efficiency slowly and hang down, usable low ebb electricity charges, and is with low costs, but the charge time overlength is difficult to satisfy the demand that the vehicle resumes the operation in short time. The two charging modes have respective disadvantages and cannot meet the requirements of practical application.
Based on the above, referring to fig. 1, an embodiment of the present invention provides a charging pile, including: the charging system comprises an alternating current-direct current conversion device 11, an energy storage device 12 and a charging pile body 13;
an input end of the alternating current-direct current conversion device 11 is used for being connected with an alternating current power supply AC, and an output end of the alternating current-direct current conversion device is connected with an input end of the energy storage device 12;
fill electric pile body 13, the input is connected with energy memory 12's output, and the output is used for charging for electrical equipment 14.
The peak-valley time-of-use electricity price is an electricity price system which divides 24 hours per day into a plurality of time periods such as a peak, a flat section and a valley according to the load change condition of a power grid and respectively calculates electricity charges according to the peak electricity consumption and the valley electricity consumption. The peak power consumption generally refers to the power consumption when the power consumption unit is centralized and the power supply is in short supply, such as the power consumption in the daytime and the power consumption in the valley with higher charging standard, and generally refers to the power consumption when the power consumption unit is less and the power supply is more sufficient, such as the power consumption in the night with lower charging standard. The peak-valley electricity price is beneficial to promoting the electricity consumption unit to stagger the electricity consumption time, and fully utilizing equipment and energy. The peak-valley time-of-use electricity price is realized, so that the reasonable transfer of electricity load, peak clipping and valley filling, reduction of the electricity load rate in the peak-valley period, improvement of the utilization efficiency of system equipment capacity and energy conservation are facilitated for users. For electricity consumers, the electricity consumption is less in the peak period and more in the valley period, so that the electricity consumption cost is reduced; for power grid enterprises, the investment cost and the operation cost of a power grid can be reduced, and the safe and stable operation of the power grid is guaranteed; for power generation enterprises, the peak shaving cost expense increased by peak shaving can be reduced; for the society, the method is beneficial to reducing or delaying the electric power investment and promoting the reasonable allocation of social resources. In the embodiment of the utility model, during the valley period and the non-charging period of the electric equipment 14, the energy storage device 12 stores the energy at low power; when electric equipment 14 (for example, electric automobile) charges, discharge with higher power by energy memory 12 again, form one kind and fill fast discharge 'charging mode slowly, the charge rate is fast, reduces distribution network power transmission's requirement by a wide margin, need not to carry out the distribution network transformation, inserts kW level residential block terminal and can satisfy the demand of filling soon, has saved distribution network construction and transformation investment cost greatly. Meanwhile, the charging pile provided by the embodiment of the utility model stores electric energy at low power, has small impact on a power grid, and cannot influence the power supply quality and safety of the power grid. Furthermore, the charging pile provided by the embodiment of the utility model can assist a power grid in power quality control, provide various auxiliary services such as frequency modulation, peak regulation, reactive power compensation, voltage support and the like at a user side, enhance the safety of the power grid and meet the requirements of practical application.
In some embodiments, referring to fig. 2, energy storage device 12 may include: a battery energy storage module 121 and a flywheel energy storage module 122;
the input and output ends of the battery energy storage module 121 are respectively connected with the input end of the energy storage device 12 and the input end of the flywheel energy storage module 122;
the output of the flywheel energy storage module 122 is connected to the output of the energy storage device 12.
The storage battery energy storage is to convert electric energy into chemical energy to be stored in the storage battery.
Lead acid batteries are the oldest and mature battery technology. The energy storage device is a low-cost general energy storage technology and can be used for power quality regulation, UPS and the like. However, such batteries have limited applications in the field of energy management due to their short life. ZnBr (zinc bromide) batteries were successfully developed by Exxon in the early 70 s of the 20 th century, and through years of research and development, a plurality of ZnBr battery energy storage systems with the capacity of thousands of watts were built and tested, and the net efficiency of the ZnBr battery energy storage systems was 75%. VRB (vanadium battery) was developed at the beginning of the 80 th century in Australia New NanWelshi university, and at present, a 500kW/5MW & h VRB energy storage system is installed in Japan, and the net efficiency is as high as 85%. In recent years, various new types of storage batteries have been successively developed and used in power systems. Regenesys technologies in the uk are using PSB (polysufidebroeflowbattery) to build a 15MW/120MW · h energy storage plant with a net efficiency of about 75%. The NaS (sodium-sulfur) battery has high energy storage efficiency (about 89 percent), and simultaneously has the capability of outputting pulse power, the output pulse power can reach six times of a continuous rated power value within 30s, and the characteristic enables the NaS battery to be simultaneously used for two purposes of electric energy quality adjustment and load peak clipping and valley filling adjustment, so that the economy of the whole equipment is improved. In Japan, the energy storage demonstration project adopting the NaS battery technology is more than 30 places at present, the total energy storage capacity exceeds 20MW, and the energy storage demonstration project can be used for daily load peak-valley regulation of 8 h.
Compared with other storage batteries, the lithium ion battery has the main advantages of high energy storage density (300-400 kW.h/m 3, 130kW.h/t), high energy storage efficiency (close to 100%) and long service life (3000 times of charging can be carried out when each discharge does not exceed 80% of energy storage). Due to the above advantages, lithium ion batteries are rapidly being developed. However, although lithium batteries have already shared 50% of the small mobile device power market in a few years, there is still some challenging task to do to produce high capacity lithium ion batteries, the main obstacle being their high cost, mainly due to the special packaging and the necessary internal overcharge protection circuitry required. Among all the secondary batteries, Metal-air battery is the most compact and is expected to be the least expensive one, which is environmentally friendly. The main disadvantage is that such batteries are very difficult and inefficient to charge.
The battery energy storage is used as an important mode of electric energy storage, has the advantages that power and energy can be flexibly configured according to different application requirements, the response speed is high, the limitation of external conditions such as geographic resources is avoided, the battery energy storage is suitable for large-scale application and batch production, and the like, so that the battery energy storage has an irreplaceable status in the aspects of matching concentrated/distributed new energy grid connection, power grid operation assistance and the like.
The flywheel energy storage is an energy storage device for converting mechanical energy and electrical energy, breaks through the limitation of chemical batteries, and realizes energy storage by a physical method. Through the electric/power generation reciprocal type bidirectional motor, the electric energy and the mechanical kinetic energy of the high-speed running flywheel are mutually converted and stored, and the energy is connected with different types of load interfaces through frequency modulation, rectification and constant voltage. When energy is stored, the electric energy is converted by the power converter and then drives the motor to operate, the motor drives the flywheel to rotate in an accelerating way, the flywheel stores the energy in the form of kinetic energy, the energy storage process of converting the electric energy into mechanical energy is completed, and the energy is stored in the flywheel body rotating at a high speed; then, the motor maintains a constant rotating speed until receiving a control signal of energy release; when releasing energy, the flywheel rotating at high speed drags the motor to generate electricity, and current and voltage suitable for loads are output through the power converter, so that the process of releasing energy from mechanical energy to electric energy conversion is completed. The whole flywheel energy storage system realizes the processes of inputting, storing and outputting electric energy.
The flywheel energy storage has high instantaneous power, high response speed, short charging time and no attenuation of frequent charging and discharging capacity, and the flywheel energy storage module 122 realizes 'quick charging' in the embodiment of the utility model. The battery energy storage module 121 is matched with the flywheel energy storage module 122 as an emergency energy source, so that the stability and the reliability of the energy storage device 12 are improved, the service life of the battery energy storage module 121 is prolonged, and the economical efficiency of a charging pile is improved.
In some embodiments, referring to fig. 3, the battery energy storage module 121 may include: accumulator unit 1211 and first switch K1；
The input and output terminals of the battery unit 1211 pass through the first switch K1Is connected with the input and output ends of the battery energy storage module 121.
In the embodiment of the utility model, the first switch K is used1Controls the access of the battery unit 1211.
In some embodiments, referring to fig. 3, the flywheel energy storage module 122 may include: at least one flywheel energy storage unit 1221;
the input end of each flywheel energy storage unit 1221 is connected to the input end of the flywheel energy storage module 122, and the output end of each flywheel energy storage unit 1221 is connected to the output end of the flywheel energy storage module 122.
In some embodiments, the flywheel energy storage module 122 may include: three flywheel energy storage units 1221.
In some embodiments, referring to fig. 3, the flywheel energy storage unit 1221 may include: flywheel batteries (F1, F2, F3), and a second switch (K)2-1、K2-2、K2-3) And a third switch (K)3-1、K3-2、K3-3)；
And the input end of the flywheel battery is connected with the input end of the flywheel energy storage unit 1221 through the second switch, and the output end of the flywheel battery is connected with the output end of the flywheel energy storage unit 1221 through the third switch.
In the embodiment of the utility model, a plurality of flywheel energy storage units 1221 are jointly powered to realize 'quick charging'. Simultaneously through the respective second switches (K)2-1、K2-2、K2-3) And each third switch (K)3-1、K3-2、K3-3) And controlling the access of the flywheel batteries (F1, F2 and F3).
In some embodiments, referring to fig. 3, the charging pile may further include: fourth step ofSwitch K4；
The output end of the AC/DC conversion device 11 passes through a fourth switch K4Is connected to the input of the energy storage device 12.
Fourth switch K4For controlling the output of the ac-dc converter means 11.
In some embodiments, referring to fig. 3, the charging pile may further include: fifth switch K5；
Fifth switch K5The first end is connected with the output end of the charging pile body 13, and the second end is used for charging the electric equipment 14.
In some embodiments, referring to fig. 4, the charging pile may further include: a wind-solar power generation device 15;
the output end of the wind-solar power generation device 15 is connected with the input end of the alternating current-direct current conversion device 11.
In some embodiments, the AC power source AC may be a three-phase AC power grid.
For example, the AC power source AC may be a power distribution line of 380V at kW level in a residential area, the AC/DC conversion device 11 has parameters AC380V/DC ± 375V, the battery unit 1211 includes a set of 50kW/100kWh batteries, the flywheel energy storage module 122 includes 3 sets of 120kW/25kWh (DC ± 375V) flywheel batteries, and the charging post body 13 is 120 kW.
The charging pile can also comprise a wind-solar power generation device 15 which utilizes renewable energy sources to supply power with the three-phase alternating current power grid in a combined mode. Meanwhile, the wind-solar power generation device 15 can transmit electric energy to a three-phase alternating current power grid, so that the power consumption burden of the three-phase alternating current power grid is reduced, and the effects of peak clipping, valley filling, frequency modulation and voltage regulation are achieved.
In some embodiments, the fifth switch K5Further comprising: a control end; fill electric pile and still include: an overvoltage protection device;
overvoltage protection, input and fifth switch K5Is connected with the first end, and the output end is connected with a fifth switch K5The control end of the controller is connected;
the overvoltage protection device is used for detecting the output voltage of the charging pile body 13 and controlling the fifth switch K when the output voltage of the charging pile body 13 is greater than a preset voltage5And (5) disconnecting.
The charging pile is described below with reference to specific embodiments.
Referring to fig. 3, the flywheel energy storage module 122 includes 3 sets of flywheel batteries (F1, F2, and F3).
1. In the low valley period, the first switch K1And a fourth switch K4And each second switch (K)2-1、K2-2、K2-3) Are all closed, each third switch (K)3-1、K3-2、K3-3) When the battery unit 1211 and the flywheel batteries (F1, F2 and F3) are charged and stored with the alternating current power supply AC through the alternating current-direct current conversion device 11 (AC/DC);
2. after the electric equipment 14 (electric automobile) is connected into the charging pile, the first switch K1And a fourth switch K4And each second switch (K)2-1、K2-2、K2-3) Are all off, the fifth switch K5And a third switch K corresponding to the first flywheel battery F13-1Closed, third switch K for second flywheel battery F23-2And a third switch K corresponding to the third flywheel battery F33-3Are all disconnected, the first flywheel battery F1 charges the electrically powered device 14;
3. when the energy of the first flywheel battery F1 is released and the electric equipment 14 is not fully charged, the other switch states are not changed, and the third switch K corresponding to the first flywheel battery F13-1The third switch K corresponding to the second flywheel battery F2 is opened3-2Closed, the second flywheel battery F2 continues to charge the electrically powered device 14; at the same time, a first switch K1And a second switch K corresponding to the first flywheel battery F12-1When closed, battery unit 1211 charges a first flywheel battery F1, replenishing its electrical power. Similarly, after the energy of the second flywheel battery F2 is released, the third flywheel battery F3 continues to charge the electric device 14, and the storage battery unit 1211 charges the second flywheel battery F2, and so on, the flywheel batteries (F1, F2, F3) are sequentially charged and discharged until the electric device 14 is fully charged, so that the electric device 14 is rapidly charged, and the storage battery unit 1211 immediately supplements the electric energy to the flywheel batteries after the energy is released.
4. Electric equipment14 is full, the fifth switch K5And each third switch (K)3-1、K3-2、K3-3) Are all disconnected, and control each second switch (K) according to the actual application requirements2-1、K2-2、K2-3) Until the electric power of the accumulator unit 1211 is exhausted or the flywheel batteries (F1, F2, F3) are fully charged.
5. And (5) repeating the action in the step 1 during the valley period.
Specifically, the action of each switch can be controlled according to the actual application requirement to realize slow charging and fast discharging, and the specific steps are not limited.
According to the charging pile provided by the embodiment of the utility model, the flywheel energy storage units 1221 are output at full power in turn, the charging power can be stabilized at 120W, and the requirement of quick charging can be met. For example, for a BYDE 6 pure electric vehicle, the battery pack performance parameters of the vehicle are 120kW/90kWh, the electricity consumption of one hundred kilometers is 25kWh, and the vehicle can run for more than 300km after being fully charged. The charging pile provided by the embodiment of the utility model is adopted to quickly charge the electric automobile of the type, the charging time is only 45min, the charging speed is high, the user experience is good, the price is low, the main network cannot be interfered, and the performance is good.
Corresponding to any one of the charging piles, the embodiment of the utility model also provides a charging pile system, which comprises any one of the charging piles, has the advantages of the charging pile, and is not repeated herein.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A charging pile, comprising: the charging pile comprises an alternating current-direct current conversion device, an energy storage device and a charging pile body;
the input end of the alternating current-direct current conversion device is connected with an alternating current power supply, and the output end of the alternating current-direct current conversion device is connected with the input end of the energy storage device;
fill electric pile body, the input with energy memory's output is connected, and the output is used for charging for electric equipment.
2. The charging pole according to claim 1, characterized in that said energy storage means comprise: the battery energy storage module and the flywheel energy storage module;
the input end and the output end of the battery energy storage module are respectively connected with the input end of the energy storage device and the input end of the flywheel energy storage module;
and the output end of the flywheel energy storage module is connected with the output end of the energy storage device.
3. The charging pole of claim 2, wherein the battery energy storage module comprises: a battery unit and a first switch;
and the input and output ends of the storage battery unit are connected with the input and output ends of the battery energy storage module through the first switch.
4. The charging pole according to claim 2, characterized in that said flywheel energy storage module comprises: at least one flywheel energy storage unit;
and the input end of each flywheel energy storage unit is connected with the input end of the flywheel energy storage module, and the output end of each flywheel energy storage unit is connected with the output end of the flywheel energy storage module.
5. The charging pole according to claim 4, characterized in that said flywheel energy storage unit comprises: the flywheel battery, the second switch and the third switch;
the input end of the flywheel battery is connected with the input end of the flywheel energy storage unit through the second switch, and the output end of the flywheel battery is connected with the output end of the flywheel energy storage unit through the third switch.
6. The charging pole according to any one of claims 1 to 5, further comprising: a fourth switch;
and the output end of the alternating current-direct current conversion device is connected with the input end of the energy storage device through the fourth switch.
7. The charging pole according to any one of claims 1 to 5, further comprising: a fifth switch;
and the first end of the fifth switch is connected with the output end of the charging pile body, and the second end of the fifth switch is used for charging the electric equipment.
8. The charging pole of claim 7, wherein the fifth switch further comprises: a control end; fill electric pile still includes: an overvoltage protection device;
the input end of the overvoltage protection device is connected with the first end of the fifth switch, and the output end of the overvoltage protection device is connected with the control end of the fifth switch;
the overvoltage protection device is used for detecting the output voltage of the charging pile body and controlling the fifth switch to be switched off when the output voltage of the charging pile body is larger than a preset voltage.
9. The charging pole according to any one of claims 1 to 5, further comprising: a wind-solar power generation device;
and the output end of the wind-solar power generation device is connected with the input end of the alternating current-direct current conversion device.
10. A charging pile system comprising a charging pile according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120695106.3U CN215621461U (en) | 2021-04-06 | 2021-04-06 | Fill electric pile and fill electric pile system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120695106.3U CN215621461U (en) | 2021-04-06 | 2021-04-06 | Fill electric pile and fill electric pile system |
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| CN215621461U true CN215621461U (en) | 2022-01-25 |
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| CN202120695106.3U Active CN215621461U (en) | 2021-04-06 | 2021-04-06 | Fill electric pile and fill electric pile system |
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| CN (1) | CN215621461U (en) |
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2021
- 2021-04-06 CN CN202120695106.3U patent/CN215621461U/en active Active
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