CN217824387U - Off-grid charging equipment - Google Patents
Off-grid charging equipment Download PDFInfo
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- CN217824387U CN217824387U CN202220350607.2U CN202220350607U CN217824387U CN 217824387 U CN217824387 U CN 217824387U CN 202220350607 U CN202220350607 U CN 202220350607U CN 217824387 U CN217824387 U CN 217824387U
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- 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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Abstract
An off-grid charging device does not need to be connected with a power grid, does not depend on the power grid to provide electric capacity no matter in power consumption peaks or low ebb, and can provide quick charging with high power. -the off-grid charging device (100) is a charging device that is not connected to the grid to provide a capacity dependent on the grid, characterized in that the off-grid charging device (100) comprises: a fuel supply unit (110), wherein the fuel supply unit (110) supplies a fuel for power generation for generating power; a fuel cell unit (120) as a power generation device, wherein the fuel cell unit (120) generates power by performing an electrochemical reaction inside using the power generation fuel supplied from the fuel supply unit (110); and a power output control module (130), wherein the power output control module (130) controls the current or power of the power generated by the fuel cell unit (120) and outputs the power to an external power utilization side.
Description
Technical Field
The present invention relates to a charging device for charging an electric vehicle (a pure electric vehicle, a hybrid vehicle, or the like) that can be driven by a battery and travel, and more particularly, to an off-grid charging device (an off-grid charging pile, for example) that is based on, for example, hydrogen energy and fuel cell technology and does not require connection to a power grid.
Background
The automobile industry is currently undergoing the transition from the traditional fuel automobile to a new energy automobile (such as an electric automobile) as a strategic post industry of national economy, and the charging equipment as a charging infrastructure of the electric automobile is the most basic part in the construction of a novel infrastructure of the automobile industry. The charging infrastructure (such as charging equipment and a battery replacement station) refers to various charging and battery replacement facilities for providing electric energy supply for the electric automobile, and is a novel urban infrastructure. Charging equipment (such as a charging pile) is developed in more than ten years from 2006 as the most direct energy supply device for the electric automobile, and is already on the initial scale at present.
In terms of the types of charging devices, ac charging devices and dc charging devices are two of the most important types in the market at the present stage. As for the AC/DC integrated charging equipment, the application scale is small, the wireless charging does not form the industrialization scale, and the AC/DC integrated charging equipment is rarely seen in the market.
Since the ac charging or the dc charging requires a connection device (charging head) including a cable and a plug, the connection device is generally called conductive charging, which is the most common way for energy supply of the electric vehicle. The alternating current type charging equipment can be regarded as a controllable alternating current power supply device, a vehicle-mounted charger is required to output direct current after voltage transformation and rectification, but alternating current charging is limited by the size and power of the vehicle-mounted charger, and the charging speed is low. Currently, most direct current charging devices employ an Alternating Current (AC) to direct current (AC/DC) converter or other AC conversion unit, i.e., 380V of AC is input from the power grid at the front end, and AC to DC conversion and voltage regulation are performed by the AC conversion unit such as the AC/DC converter, and then the electric vehicle is charged. However, the dc charging relies on the power grid, and has a certain demand for electric capacity, and needs to perform various infrastructure, such as capacity increase, cable installation, ground digging and landfill, charging pile fixing, etc., so once an installation address is selected, the site is generally not easy to replace, and the maintenance period after equipment failure is relatively long. If the address selection is wrong and the charging traffic flow is small, a large amount of equipment is idle.
China is a big country of global new energy automobile output and sales volume, and is also the country with the most electric automobile users, and has an urgent demand for high-power quick charging, and the high-power quick charging can meet the demands of customers on emergency power supply and long-distance travel, and can also improve the efficiency of operating vehicles.
However, the dc charging device, especially the high-power dc charging device, has a direct demand for the capacitance of the power distribution side of the power grid, and especially when the high-power dc charging device is charged in a centralized manner, the load of the power grid is greatly impacted and affected, so that the ratio of the ac charging device to the dc charging device in the existing domestic public charging device is maintained at 6:4, it is difficult to further increase the proportion of dc charging devices, in particular high-power dc charging devices.
Thus, an off-grid charging device is sought that does not require connection to the grid, and does not provide electrical capacity from the grid. When the charging equipment works, particularly high-power work, impact and influence on a power grid cannot be generated, and the technical problem to be solved urgently is solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the above technical problem and do, its aim at provides an off-grid charging equipment, need not to be connected with the electric wire netting, no matter power consumption peak or low ebb, all do not rely on the electric wire netting to provide the electric capacity, and can provide quick charge with high-power.
In order to achieve the above object, the present invention provides an off-grid charging device, which is not connected to a power grid to provide a charging device of a capacitance depending on the power grid, the off-grid charging device including: a fuel supply unit that supplies a fuel for power generation for generating power; a fuel cell unit as a power generation device that generates power by performing an electrochemical reaction inside using the power generation fuel supplied from the fuel supply unit; and a power output control module that controls the current or power of the power generated by the fuel cell unit and outputs the power to an external power consumption side.
According to the structure, the off-grid charging equipment does not need to be connected with a power grid to provide electric capacity depending on the power grid, so that the electric capacity is not provided depending on the power grid no matter in a power utilization peak or a low ebb, the defect that the traditional charging equipment depends on the connection of the power grid is overcome, the infrastructure reconstruction cost for laying charging piles is saved, and a charging solution can be provided for an area without the power grid laying.
Meanwhile, the off-grid charging equipment generates electricity by performing electrochemical reaction inside the fuel cell part by using the electricity generating fuel provided by the fuel supply part, and outputs the electricity or power to the external electricity utilization side after controlling the current or power through the power output control module, so that compared with the existing situation of providing electric capacity by being connected with a power grid, the off-grid charging equipment can avoid the impact on the power grid caused by a large amount of networking of the electricity utilization side in the same time period, solves the requirement of a high-power direct-current charging pile on the electric capacity of the power grid distribution side, and does not increase the load of the power grid.
Preferably, the off-grid charging apparatus further includes a power storage portion capable of storing a part of the power generated by the fuel cell portion and outputting the stored power to the power output control module. In this case, the electric power stored in the electric power storage portion can be used for power supply of high-voltage components in the fuel cell portion and for starting of the fuel cell portion itself, and can be output to the electric power output control module as supplementary electric power in common with the fuel cell portion.
According to constitute as above, the utility model discloses an off-grid charging equipment can replace current charging equipment of being connected with the electric wire netting to provide electric power for the power consumption side as independent charging equipment, to having easily to deploy, the characteristics of easily withdrawing because of it simultaneously, can effectively solve the problem of "corpse stake". Moreover, the off-grid charging equipment can be used as a supplement of the existing charging equipment connected with a power grid, and the problem of difficult tide-type charging in a current hot spot is solved.
And simultaneously, the utility model discloses an off-grid charging equipment can continuously provide quick charge service, and need not worry impact and the influence of a large amount of quick concentrated charging to the load of electric wire netting.
The power generation fuel supplied from the fuel supply unit may be a hydrogen rich gas or may be a fuel for power generation known in the future. The hydrogen-rich gas generally refers to a gas with high hydrogen content, and common hydrogen-rich gases in the industry include hydrogen, methane, methanol, ammonia gas and the like.
Meanwhile, the tip of the fuel supply unit is connected to a storage source or a generation source of the power generation fuel. The storage source of the fuel for power generation may be a portable hydrogen storage source such as a high-pressure gas cylinder, low-pressure solid-state hydrogen storage, low-pressure organic liquid hydrogen storage, or a stationary hydrogen storage source such as a hydrogen refueling station. The generation source of the power generation fuel includes a hydrogen production apparatus, for example, an apparatus for producing hydrogen by water electrolysis, an apparatus for producing hydrogen by ammonia pyrolysis, or the like. For example, taking the fuel for power generation as hydrogen, the front end of the fuel supply part can be matched with the hydrogen pipeline connection of the hydrogen station to realize off-grid hydrogen-electricity conversion in the hydrogen station, and can also be connected with an independent hydrogen storage/production device, so that sustainable high-power off-grid charging/power distribution service can be realized through hydrogen stored in the hydrogen storage device or hydrogen provided by on-site hydrogen production. Additionally, consequently, the utility model discloses an off-grid charging equipment need not for other many infrastructure such as the supporting electric wire netting of charging facility, can reduce the utility model discloses an off-grid charging equipment's running cost even can not cause impact and influence for the load of electric wire netting when charging equipment concentrates to charge yet, and is safe and reliable, reduces the influence that brings the resident electricity of using electricity in daily use and production.
In addition, current photovoltaic power generation's battery charging outfit, though can break away from the electric wire netting full load work under sufficient sunshine's the condition, nevertheless can't realize quick charge, even unable work at day time of insufficient sunshine or the night of no sunshine, consequently, current photovoltaic power generation's battery charging outfit still not with the electric wire netting be connected in order to rely on the electric wire netting to provide the battery charging outfit of electric capacity, on the contrary, the utility model discloses an off-grid type battery charging outfit can be under the state of complete off-grid continuous work.
Preferably, the off-grid charging device further includes a main control system that determines an amount of power each output by the fuel cell portion and the power storage portion each time the power usage side makes a power usage request signal. In this case, the main control system performs communication interaction with the fuel cell part, the power storage part and the power output control module, respectively sends power supply instructions corresponding to the determined output electric quantities to the fuel cell part and the power storage part, and simultaneously records actually output power supply parameters and uploads the power supply parameters to a cloud or a server for background recording and analysis.
According to the above configuration, it is possible to quickly become familiar with and grasp the charging characteristics of a specific site over the entire period, and determine the amounts of electric power output from each of the fuel cell section and the electric power storage section, so as to improve the balance between the charging efficiency and the activation cost of the specific site.
Preferably, the off-grid charging device further includes a heat management unit that manages heat emitted from the off-grid charging device when the fuel cell unit generates electricity.
With the above configuration, the heat management unit can quickly dissipate the heat generated by the off-grid charging device (during power generation by the fuel cell unit) during operation.
Of course, this heat can also be recovered as heat energy as needed.
Preferably, the power output control module has a dc power conversion unit that converts dc power to dc power or ac power, and is connected to the dc power or ac power output unit. In this case, the output unit is a dc charging head or an inverter.
With the above-described configuration, the off-grid charging device may be used as a charging pile for charging an electric vehicle (in this case, the output unit is a dc charging head), or may be used as a power source (a peak shaving power source or a backup power source) (in this case, the output unit is an inverter). In the latter case, a plurality of the off-grid charging devices are connected in parallel, and the power output from each of the plurality of off-grid charging devices is combined to achieve power generation capacity expansion to use off-grid power on the power consumption side, thereby providing a solution for expansion of temporary charging demand for an area, such as a charging facility temporarily used during a large-scale activity venue activity, enabling rapid deployment and rapid evacuation.
Drawings
Fig. 1 is a schematic structural diagram of an off-grid charging device according to the present invention.
Fig. 2 is a functional frame diagram of the off-grid charging device of the present invention.
FIG. 3 is a schematic diagram showing another application of the off-grid charging device of the present invention
The power generation capacity expansion is realized by connecting a plurality of off-grid charging devices in parallel.
(symbol description)
100 an off-grid charging device;
110 a fuel supply section;
120 a fuel cell section;
130 power output control module;
131 dc charging heads;
132 an inverter;
133 a direct current conversion part;
140 a power storage unit;
150 a master control system;
160 thermal management section.
Detailed Description
Hereinafter, the off-grid charging device 100 of the present invention will be described in detail with reference to the drawings. Fig. 1 is a schematic structural diagram of an off-grid charging device 100 according to the present invention, and fig. 2 is a functional framework diagram of the off-grid charging device 100 according to the present invention.
As shown in fig. 1, the off-grid charging device 100 of the present invention is a charging device that is not connected to a power grid to provide electric capacity depending on the power grid, and includes: a fuel supply unit 110, the fuel supply unit 110 supplying a fuel for power generation for generating power; a fuel cell unit 120 as a power generation device, the fuel cell unit 120 generating power by using the power generation fuel supplied from the fuel supply unit 110; and a power output control module 130, wherein the power output control module 130 controls the current or power of the power generated by the fuel cell unit 120, and outputs the current or power to an external power utilization side through an output unit (a dc charging head 131 or an inverter 132 in fig. 2).
In the present embodiment, the fuel for power generation supplied from the fuel supply unit 110 is, for example, hydrogen gas, but the present invention is not limited to this, and may be, for example, hydrogen-rich gas such as methane, methanol, or ammonia gas, or may be a fuel for power generation that is known in the art or known in the future.
The tip of the fuel supply unit 110 may be connected to a storage source of the power generation fuel or to a generation source of the power generation fuel. The storage source of the fuel for power generation can be a portable hydrogen storage source such as a high-pressure gas cylinder, low-pressure solid hydrogen storage, low-pressure organic liquid hydrogen storage and the like, and can also be a fixed hydrogen storage source such as a hydrogen adding station and the like connected through a hydrogen pipeline. The generation source of the fuel for power generation includes, for example, a hydrogen production apparatus, such as an apparatus or equipment for producing hydrogen by electrolysis of water, hydrogen production by ammonia cracking, or the like, in situ.
In the present embodiment, the power output control module 130 has a DC converter 133, such as a DC-to-DC (DC/DC) converter and/or a DC-to-AC (DC/AC) converter, to connect to the DC or AC output unit (the DC charging head 131 or the inverter 132), so that the off-grid charging apparatus 100 can select an appropriate output unit (the DC charging head 131 or the inverter 132) to output DC or AC power according to the demand of the power consumption.
The utility model discloses an off-grid charging device 100 can further include electric power storage portion 140, electric power storage portion 140 is in the generated energy of fuel cell portion 120 is greater than can store by a part electric power that fuel cell portion 120 generated electricity and obtained when the power consumption of power consumption side, and the power consumption demand of power consumption side is greater than will store during the maximum generated power that fuel cell portion 120 can provide electric power output control module 130 extremely to improve whole off-grid charging device 100's power upper limit. The electric power stored in the electric power storage unit 140 can be used for starting the fuel cell itself.
As an example, the fuel cell part 120 of the off-grid charging apparatus 100 of the present invention is, for example, a fuel cell having a certain maximum power generation power (a kW), when the power demand of the power consumption side is less than a kW, the fuel cell part 120 can adaptively match the power generation power below the maximum power generation charge (a kW) to charge the power consumption side and recover and store the surplus power to the power storage part 140, and when the power demand of the power consumption side (for example, B kW which is greater than a) is greater than the maximum power generation charge, the fuel cell part 120 charges the power consumption side with the maximum power generation charge (a kW), and the power storage part 140 can additionally provide B-
The charging power of a kW allows the total output of the off-grid charging device 100 to be B kW, which is larger than the maximum power generation power of the fuel cell unit 120 itself, and thus the demand for high-power quick charging can be satisfied. In addition, when the charging power needs to be upgraded in the future, the current fuel cell only needs to be replaced by the fuel cell with larger charging power in the fuel cell part 120, and there is no need to worry about the electric power infrastructure such as the national power grid. Moreover, compare in the photovoltaic charging equipment that needs set up a large amount of solar panels and utilize sunshine could generate electricity, the utility model discloses an off-grid charging equipment 100's power density is higher.
The utility model discloses an off-grid charging device 100 still can further include major control system 150, major control system 150 is responsible for off-grid charging device 100's whole operational control and energy policy management. In particular, the main control system 150 determines the amount of power output by each of the fuel cell part 120 and the power storage part 140 every time the power consumption side issues a power consumption request signal, so as to meet the demand of the power consumption side.
Furthermore, the off-grid charging device 100 of the present invention may further include a heat management unit 160, wherein the heat management unit 160 manages heat emitted from the off-grid charging device 100 when the fuel cell unit 120 generates electricity. The heat management unit may be a water-cooled heat sink that performs heat dissipation by water cooling, a fan that performs heat dissipation by air cooling, or a structure that promotes heat dissipation by its own structure, for example, a heat dissipation fin.
As shown in the functional block diagram of the off-grid charging device 100 in fig. 2, a fuel for power generation (hydrogen gas) is supplied from a fuel supply system (including the fuel supply unit 110 and the front end of the fuel supply unit 110) to a fuel cell system (the fuel cell unit 120) via a pipe, the fuel cell system (the fuel cell unit 120) generates electric energy (power generation) by performing an electrochemical reaction therein, transmits the generated electric energy to a power control unit (the power output control module 130), and controls the current or power of the electric power output from the off-grid charging device 100 by the power control unit (the power output control module 130) according to the energy management strategy determined by the main control system 150, thereby supplying the electric energy required for the output unit (the dc charging head 131 or the inverter 132) at the rear end. If the power previously transmitted from the fuel cell system (fuel cell portion 120) to the power control portion (power output control module 130) is larger than the power required by the output portion (dc charging head 131 or inverter 132) at the rear end according to the energy management strategy, the power control portion (power output control module 130) collects a part of the power flowing therethrough to the power storage portion 140 (for example, a power-type energy storage battery), the part of the power being mainly used for supplying power to the high-voltage components in the fuel cell system (fuel cell portion 120) and for starting the fuel cell system (fuel cell portion 120) itself, and further, when the power consumption requirement is large, the power can be output to the power control portion (power output control module 130) together with the fuel cell system (fuel cell portion 120 at the maximum generated power) to increase the total output of the charge of the entire off-grid charging apparatus 100.
The main control system 150 performs communication interaction with the fuel cell system (fuel cell portion 120), the power storage portion 140, and the power control portion (power output control module 130), and sends power supply instructions corresponding to the respective output electric quantities of the fuel cell system (fuel cell portion 120) and the power storage portion 140, which are determined when the power consumption request signal is provided at the power consumption side each time, to the fuel cell system (fuel cell portion 120) and the power storage portion 140, respectively, and records actually output power supply parameters (electric quantity, power, current, voltage, etc.) and uploads the power supply parameters to the cloud/server for background recording and analysis.
In fig. 1, the off-grid charging device 100 is mainly described as an example of a charging pile, but the off-grid charging device 100 of the present invention is not limited to this, and as shown in fig. 3, the output unit of each of a plurality of off-grid charging devices 100 connected in parallel may be replaced with an inverter 132, and the power output from each of the plurality of off-grid charging devices 100 may be combined to expand the amount of generated power, so that the off-grid power can be used by the power supply side.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (11)
1. An off-grid charging device (100),
the off-grid charging device (100) is a charging device that is not connected to the grid to provide a capacitance dependent on the grid,
the off-grid charging device (100) comprises:
a fuel supply unit (110), wherein the fuel supply unit (110) supplies a fuel for power generation for generating power;
a fuel cell unit (120) as a power generation device, wherein the fuel cell unit (120) generates power by performing an electrochemical reaction therein using the power generation fuel supplied from the fuel supply unit (110);
and a power output control module (130), wherein the power output control module (130) controls the current or power of the power generated by the fuel cell unit (120) and outputs the power to an external power utilization side;
the off-grid charging device (100) further includes a power storage unit (140), and the power storage unit (140) is capable of storing a part of the power generated by the fuel cell unit (120) and outputting the stored power to the power output control module (130).
2. An off-grid charging device (100) according to claim 1,
the electric power stored in the electric power storage portion (140) can be used for power supply of high-voltage components in the fuel cell portion (120) and for start-up of the fuel cell portion (120) itself, and can output electric power to the electric power output control module (130) together with the fuel cell portion (120) as supplementary electric power.
3. An off-grid charging device (100) according to claim 1,
the fuel for power generation supplied from the fuel supply unit (110) is a hydrogen-rich gas.
4. An off-grid charging device (100) according to claim 1,
the tip of the fuel supply unit (110) is connected to a storage source or a generation source of the power generation fuel.
5. An off-grid charging device (100) according to claim 4,
the storage source of the fuel for power generation comprises a high-pressure gas cylinder serving as a portable hydrogen storage source, low-pressure solid hydrogen storage, low-pressure organic liquid hydrogen storage and a hydrogenation station serving as a fixed hydrogen storage source,
the generation source of the fuel for power generation includes a hydrogen production device.
6. An off-grid charging device (100) according to claim 1,
the off-grid charging device (100) further includes a master control system (150), and the master control system (150) determines the amounts of electricity output by each of the fuel cell section (120) and the electricity storage section (140) each time the electricity usage side makes a request signal for electricity usage.
7. An off-grid charging device (100) according to claim 6,
the main control system (150) is in communication interaction with the fuel cell part (120), the power storage part (140) and the power output control module (130), respectively sends power supply instructions corresponding to the determined output electric quantities to the fuel cell part (120) and the power storage part (140), and simultaneously records the actually output power supply parameters and uploads the power supply parameters to a cloud or a server for background recording and analysis.
8. An off-grid charging device (100) according to claim 1,
the off-grid charging device (100) further includes a heat management unit (160), and the heat management unit (160) manages heat emitted by the off-grid charging device (100) when power is generated by the fuel cell unit (120).
9. An off-grid charging device (100) according to any one of claims 1 to 8,
the power output control module (130) has a DC/DC conversion unit (133) for converting DC to DC or AC, and is connected to a DC/AC output unit.
10. An off-grid charging device (100) according to claim 9,
the output unit is a DC charging head (131) or an inverter (132).
11. An off-grid charging device (100) according to claim 10,
a plurality of the off-grid charging devices (100) are connected in parallel,
the output of each off-grid charging device (100) is the inverter (132),
the power output from each of the plurality of off-grid charging devices (100) is combined to achieve power generation capacity expansion so as to use off-grid power on the power consumption side.
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| CN202220350607.2U CN217824387U (en) | 2022-02-21 | 2022-02-21 | Off-grid charging equipment |
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