CN209929995U - Energy storage charging system - Google Patents
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- CN209929995U CN209929995U CN201920584681.9U CN201920584681U CN209929995U CN 209929995 U CN209929995 U CN 209929995U CN 201920584681 U CN201920584681 U CN 201920584681U CN 209929995 U CN209929995 U CN 209929995U
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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
- 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
- Y02T90/14—Plug-in electric vehicles
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Abstract
The utility model discloses an energy storage charging system contains the AC/DC conversion equipment who keeps apart the load power supply usefulness of transform and discharges from the battery and keep apart the DC/DC conversion equipment who transforms for the high frequency of load power supply usefulness from the electric wire netting. The utility model discloses a charge ACDC and convert direct current electric energy into and charge, also can discharge through the DCDC conversion equipment that the high frequency was kept apart simultaneously and give load power supply generating line, the ACDC who links to each other with the interchange simultaneously still converts alternating current electric energy into direct current electric energy to load power supply generating line and gives the load power supply. The charging ACDC is isolated by a high-frequency isolation transformer, the electric energy passing through the transformer is adjusted, so that the charging voltage and the charging current of the direct current bus to the energy storage device are adjusted, the power supply DCDC is isolated by the high-frequency isolation transformer, the electric energy passing through the transformer is adjusted, the power supply voltage and the power supply current of the load power supply bus are adjusted, and the purpose of charging the electric vehicle or other types of loads is achieved.
Description
Technical Field
The utility model relates to a charging system, concretely relates to energy storage charging system.
Background
Generally, electric vehicles or other types of load charging systems take power from an ac power grid, but due to limitations of the ac power grid in power supply, particularly the limited capacity of a single box transformer, it is not possible to access charging systems that exceed their capacity. Meanwhile, the electricity consumption of the alternating current power grid at different time intervals is different, and the electric vehicle or other types of loads are charged randomly, so that the situation that peak electricity consumption is used or full-power charging cannot be carried out exists.
Meanwhile, in the energy storage system used at present, when the energy storage device is connected with the direct current bus, a short circuit protection problem exists. That is, when the dc bus is short-circuited or the converting device is short-circuited at the side connected with the dc bus, the electric energy of the energy storage device is also released to the short-circuited point through the loop, which causes the risk of accident enlargement. The traditional solution is to add an isolation transformer on the ac side of the inverter system, and because of the lower frequency, the electric energy passing through the transformer is still large, and there is no effective way to limit the electric energy released by the energy storage device on the dc bus.
For charging and discharging applications with impact characteristics, the direct adoption of an energy storage mode has limitations. For example, as the high-current charging for energy recovery, the cost or the volume of a battery is directly large, the solution is to combine different energy storage modes, a super capacitor or a high-rate energy storage battery is adopted for high-rate short-time energy storage, and a common lithium ion battery is adopted for long-time energy storage, so that the energy conversion cannot be flexibly carried out.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an energy storage charging system keeps apart through high frequency transformer between energy memory and the direct current generating line, and energy memory is restricted during the short circuit, effectively takes precautions against the risk that the accident enlarges, effectively solves a great deal of among the prior art not enough.
The utility model discloses a realize through following technical scheme: an energy storage charging system comprises an AC/DC conversion device for high-frequency isolation conversion and an energy storage charging direct current bus; the first connecting point of the AC/DC device is connected to the energy storage device; the second connection point is connected to an alternating current power grid, and the AC/DC device charges the energy storage device after the power grid electric energy is subjected to high-frequency isolation conversion;
b, a DC/DC conversion device containing high-frequency isolation conversion and a load direct-current bus; the first connecting point of the DC/DC device is connected to an energy storage charging direct current bus; the second connection point is connected to a load direct current bus, and the DC/DC device supplies power to a load on the load direct current bus after high-frequency isolation and conversion of electric energy of an energy storage device connected to the energy storage charging direct current bus;
c, an AC/DC conversion device containing high-frequency isolation conversion and a load power supply direct current bus; the first connecting point of the AC/DC device is connected to an alternating current power grid; the second connection point is connected to a load direct current bus, and the AC/DC device supplies power to the load after the power of a power grid is subjected to high-frequency isolation and conversion;
the device comprises a device for charging the electric vehicle or other types of loads, wherein a first connecting point of the device is a direct current bus of the loads, a second connecting point is a charging port of the electric vehicle or other types of loads, and the voltage of the bus and the charging current of the electric vehicle or other types of loads are dynamically regulated according to the voltage and the current required by the electric vehicle or other types of loads.
Preferably, the DC/DC converter including the high-frequency isolation converter includes a first stage converter, a high-frequency isolation transformer, and a second stage converter, wherein the first stage converter is connected to the energy storage charging bus, the second stage converter is connected to the load DC bus, and the high-frequency isolation transformer is connected to the first stage converter and the second stage converter.
Preferably, the dc power of the energy storage unit is converted into high-frequency power through a first-stage conversion of the DCDC converter by the energy storage dc bus, converted into high-frequency power of different voltages by the conversion of the high-frequency isolation transformer, converted into dc power through a second-stage conversion, and output to the load dc bus.
As the preferred technical scheme, the electric energy of both sides of the high-frequency isolation transformer of the DCDC conversion device is isolated by the high-frequency isolation transformer, and electric conductors on both sides are not directly conducted; high frequency electrical energy is transmitted from one side to the other by electromagnetic induction.
The DC/DC conversion device comprises a DC/DC conversion control unit, wherein the DC/DC control unit internally controls the work of a first-stage conversion, a second-stage conversion and a high-frequency isolation transformer, externally has a communication bus, is connected with a system main control unit, and controls the discharge voltage current and power of the energy storage device through the communication between the system main control unit and the DC/DC conversion device.
As a preferred technical scheme, the energy storage direct current bus comprises a positive bus and a negative bus, wherein the positive bus and the negative bus are respectively connected to one or more high-frequency isolation DC/DC conversion devices, and are simultaneously connected to the load charging bus and the devices thereof through the input and output access points for discharging.
As a preferred technical scheme, the energy storage device is connected with the ACDC conversion device, converts the electric energy of an alternating current power grid and stores the electric energy to the energy storage device through an energy storage direct current bus, and in the input process of the electric energy, the voltage and the current of the electric energy are changed according to the requirement of the energy storage device; or the energy storage direct current bus is connected with a plurality of energy storage devices, and different types of energy storage devices or a plurality of same energy storage devices are connected to the same energy storage direct current bus to store and exchange electric energy.
The AC/DC conversion device comprises a first stage conversion, a high frequency isolation transformer and a second stage conversion, wherein the first stage conversion is connected with an alternating current power grid, the second stage conversion is connected with an energy storage direct current bus, and the high frequency isolation transformer is connected with the first stage conversion and the second stage conversion.
As the preferred technical scheme, the electric energy on both sides of the high-frequency isolation transformer is isolated by the high-frequency isolation transformer, and electric conductors on both sides are not directly conducted; high frequency electrical energy is transmitted from one side to the other by electromagnetic induction.
As a preferred technical solution, the AC/DC conversion device includes an AC/DC conversion control unit, the AC/DC control unit internally controls the first-stage conversion, the second-stage conversion, and the high-frequency isolation transformer to operate, and externally has a communication bus: the communication bus is connected with the system main control unit, and the system main control unit is communicated with the AC/DC conversion device to control the electric energy conversion of the energy storage direct current bus from the power grid, so that the electric energy storage of the energy storage device is realized.
As a preferred technical scheme, the load power supply bus comprises a positive bus and a negative bus, the positive bus and the negative bus are respectively connected to one or more high-frequency isolated AC/DC conversion devices, and the other side of the device is connected to an alternating current power grid to convert the power of the power grid into direct current power to supplement the load power supply bus.
As a preferred technical scheme, the AC/DC device connected to a load power supply bus, the converted power is controlled by a system main control unit, and the system main control unit controls the converted voltage, current and power according to the charging requirement of the current electric vehicle or other types of loads, the current power and cost condition of a power grid, the current power requirement condition of other charging equipment in the power grid and the characteristics of an energy storage device and a preset optimal control mode.
As an optimal technical scheme, the number of the charging interfaces is one or more, power distribution and switching are carried out among different load power supply buses connected with each charging interface, and the voltage current and the power of the load power supply buses are controlled by a system main control through controlling energy storage charging AC/DC, energy storage discharging DC/DC and load power supply ACDC according to the power supply requirements of an electric vehicle or other types of loads.
As a preferred technical solution, the system master is an integrated master of a single integration, or a distributed master formed by combining multiple control units of a layered architecture.
The utility model has the advantages that: the utility model discloses energy memory and load power supply direct current generating line and alternating current network all keep apart through the high frequency isolation transformer of the DCDC of high frequency isolation and ACDC conversion equipment, and the restriction passes through the electric energy of transformer to reduce direct current generating line's fault current, reach the safety protection purpose. And simultaneously, the load power supply direct current bus and the alternating current power grid also carry out electric energy supplement through the ACDC conversion device with high frequency isolation, the load direct current bus is directly connected with the charging interface of the electric vehicle or other types of loads, and the system main control carries out optimal charging control according to the current charging requirements of the electric vehicle or other types of loads, the electric energy storage state of the energy storage device and the state of the alternating current power grid.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, the DC/DC converter 14 including high frequency isolated conversion and the energy storage DC bus 2 are shown in fig. 1; the first connecting point of the DC/DC device is connected to the energy storage direct current bus 2; the second connection point is connected to the load direct current bus 3, and the DC/DC device supplies power to the load direct current bus 3 after the electric energy of the energy storage devices 7, 8 and 9 is subjected to high-frequency isolation and conversion.
The DC/DC conversion device 14 comprising the high-frequency isolation conversion comprises a first-stage conversion 15, a high-frequency isolation transformer 16 and a second-stage conversion 17, wherein the first-stage conversion 15 is connected with the energy storage device and the energy storage bus 2, the second-stage conversion 17 is connected with the load direct-current bus 3, and the high-frequency isolation transformer 16 is connected with the first-stage conversion 15 and the second-stage conversion 17.
In the embodiment, the high-frequency isolation DC/DC conversion converts the direct current energy of the energy storage unit into high-frequency electric energy through first-stage conversion, converts the high-frequency electric energy into high-frequency electric energy with different voltages through the conversion of the high-frequency isolation transformer, converts the high-frequency electric energy into direct current through second-stage conversion, and outputs the direct current electric energy to the load direct current bus;
in this embodiment, the electric energy at both sides of the high-frequency isolation transformer 16 is isolated by the high-frequency isolation transformer, and the electric conductors at both sides are not directly conducted; high frequency electrical energy is transmitted from one side to the other by electromagnetic induction.
In this embodiment, the DC/DC converter includes a DC/DC converter control unit 18, the DC/DC control unit internally controls the first-stage converter 15, the second-stage converter 17, and the high-frequency isolation transformer 16 to operate, and externally has a communication bus 5, and the communication bus 5 is connected to the system main controller 11.
In this embodiment, the system main controller 11 obtains the energy storage information of the energy storage device 7/8/9 through the communication bus 10, and controls the DC/DC conversion device through the communication bus 5, and the control unit 18 of the DCDC conversion device controls the conversion power and the voltage current of the DC/DC conversion device through the DC bus voltage information acquired by the internal sampling circuit according to the communication between the communication bus 5 and the system main controller.
In this embodiment, the energy storage DC bus 2 includes a positive bus and a negative bus, where the positive bus and the negative bus are respectively connected to one or more of the high-frequency isolation DC/DC conversion devices, and are connected to other devices through the input/output access point.
In this embodiment, the energy storage devices 7, 8, and 9 store the externally input electric energy through the dc input of the energy storage dc bus, or discharge the electric energy through the bus, and the voltage and current of the electric energy change during the input and output processes of the electric energy; or the bus is connected with a plurality of energy storage devices, different types of energy storage devices or a plurality of same energy storage devices and connected to the same energy storage direct current bus for electric energy exchange.
In this embodiment, the energy storage device connected to the energy storage dc bus, the power level and direction of the conversion are controlled by the system main control unit, and the system control unit controls the power level and direction of the conversion according to the current state and characteristics of the energy storage device, the state and load state of the ac power grid, and the preset optimal control mode.
In this embodiment, the AC power grid 1 converts AC power into DC power to the energy storage DC bus 2 through the high frequency isolation AC/DC converter 12 to charge the energy storage device 7/8/9 on the bus, the high frequency isolation AC/DC converter communicates with the system main control through the communication bus 5 to receive control of the system main control, and the system main control controls charging voltage and current to the energy storage device according to the current power grid state, load state and energy storage device state and in a preset optimal control manner.
In the embodiment, the load direct current bus 3 is connected with a charging interface 4 of an electric vehicle or other types of loads, the charging demand voltage and current of the electric vehicle or other types of loads are communicated with a system main control through a bus 6, the system main control adjusts the voltage and current of the direct current bus through the charging demand information of the electric vehicle or other types of loads and through the optimal control of AC/DC and DC/DC, and the optimal electric energy utilization and the charging demand of the electric vehicle or other types of loads are met.
In this embodiment, the system main controller 110 collects information of the energy storage device, charging information of the electric vehicle or other types of loads through the communication bus, and in combination with the state of the AC power grid and the power states of other charging systems in the grid, charges the energy storage device by controlling the AC power acquisition of the AC/DC converter 12, controls the discharge power and the voltage and current of the energy storage device through the DC/DC converter 14, performs the supplementary charging of the load by controlling the AC power acquisition of the AC/DC converter 13, and synchronously adjusts the voltage and current of the DC bus of the load, thereby meeting the optimal power utilization and the charging requirements of the electric vehicle or other types of loads.
Embodiment 1:
as shown in fig. 2, the high-frequency isolation conversion energy storage charging system comprises a high-frequency isolation conversion DC/DC conversion device 14, an energy storage DC bus 2, an energy storage battery pack 7/8/9, a bidirectional charging AC/DC device 12, a bidirectional load power supply AC/DC device 13, a load DC bus 3, an electric vehicle or other load interface 4 and a system main control 11.
The high-frequency isolation conversion energy storage system comprises a plurality of groups of battery packs and an energy storage direct current bus connected with batteries. The energy storage charging ACDC conversion device is connected with an alternating current power grid and an energy storage direct current bus.
The energy of the batteries is supplied to the load through DC/DC conversion, and the battery pack is charged by the power grid through the AC/DC conversion device. The battery pack can also feed the power grid in the reverse direction through the bidirectional ACDC.
The alternating current power grid supplies power to the load through the bidirectional load power supply AC/DC conversion device at the same time, and the electric energy of the load direct current bus can be reversely fed back to the alternating current power grid.
The embodiment is applied to the application of the power grid in energy supplement of the battery and power supply of the load. The method can also be applied to the application that the energy storage device feeds power to the power grid reversely, or the application of V2G feeds the electric energy of the battery of the electric vehicle to the power grid or charges the electric energy of the battery of the electric vehicle to the energy storage battery reversely.
Embodiment 2:
as shown in fig. 3, the photovoltaic array a is connected to an energy storage dc bus through an MPPT maximum power tracking converter B, and the high frequency isolation converter connects a plurality of battery packs to a load dc bus, and the load dc bus is connected to a charging port of an electric vehicle or other types of loads to charge the electric vehicle or other types of loads.
The above embodiment is a photovoltaic energy storage charging system, and electric energy can be supplemented through a photovoltaic array, and power is supplied to an energy storage direct current bus through maximum power tracking, and then power is supplied to a load device through a load direct current bus, and surplus electric energy is stored in a battery pack through the energy storage system. When no solar energy exists or the solar energy is insufficient, the alternating current or the battery pack is used for discharging, and the electric energy is provided for the load bus.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (14)
1. An energy storage charging system, characterized by:
the method comprises the following steps that A, an AC/DC conversion device containing high-frequency isolation conversion and an energy storage charging direct current bus are included; the first connecting point of the AC/DC device is connected to the energy storage device; the second connection point is connected to an alternating current power grid, and the AC/DC device charges the energy storage device after the power grid electric energy is subjected to high-frequency isolation conversion;
b, a DC/DC conversion device containing high-frequency isolation conversion and a load direct-current bus; the first connecting point of the DC/DC device is connected to an energy storage charging direct current bus; the second connection point is connected to a load direct current bus, and the DC/DC device supplies power to a load on the load direct current bus after high-frequency isolation and conversion of electric energy of an energy storage device connected to the energy storage charging direct current bus;
c, an AC/DC conversion device containing high-frequency isolation conversion and a load power supply direct current bus; the first connecting point of the AC/DC device is connected to an alternating current power grid; the second connection point is connected to a load direct current bus, and the AC/DC device supplies power to the load after the power of a power grid is subjected to high-frequency isolation and conversion;
the device comprises a device for charging the electric vehicle or other types of loads, wherein a first connecting point of the device is a direct current bus of the loads, a second connecting point is a charging port of the electric vehicle or other types of loads, and the voltage of the bus and the charging current of the electric vehicle or other types of loads are dynamically regulated according to the voltage and the current required by the electric vehicle or other types of loads.
2. The energy storage charging system of claim 1, wherein: the DC/DC conversion device comprising the high-frequency isolation conversion comprises a first-stage conversion, a high-frequency isolation transformer and a second-stage conversion, wherein the first-stage conversion is connected with an energy storage charging bus, the second-stage conversion is connected with a load direct-current bus, and the high-frequency isolation transformer is connected with the first-stage conversion and the second-stage conversion.
3. The energy storage charging system of claim 2, wherein: the direct current electric energy of the energy storage unit is converted into high-frequency electric energy through the energy storage direct current bus by the first-stage conversion of the DCDC conversion device, is converted into high-frequency electric energy with different voltages by the conversion of the high-frequency isolation transformer, is converted into direct current through the second-stage conversion, and is output to the load direct current bus.
4. The energy storage charging system of claim 2, wherein: the electric energy at two sides of the high-frequency isolation transformer of the DCDC conversion device is isolated by the high-frequency isolation transformer, and electric conductors at two sides are not directly conducted; high frequency electrical energy is transmitted from one side to the other by electromagnetic induction.
5. The energy storage charging system of claim 2, wherein: the DC/DC conversion device comprises a DC/DC conversion control unit, wherein the DC/DC control unit internally controls the work of a first-stage conversion, a second-stage conversion and a high-frequency isolation transformer, externally has a communication bus, is connected with a system main control unit, and is communicated with the DC/DC conversion device through the system main control unit to control the discharge voltage current and power of the energy storage device.
6. The energy storage charging system of claim 1, wherein: the energy storage direct current bus comprises a positive bus and a negative bus, wherein the positive bus and the negative bus are respectively connected to one or more high-frequency isolation DC/DC conversion devices and are simultaneously connected to a load charging bus and the devices thereof through an input and output access point for discharging.
7. The energy storage charging system of claim 1, wherein: the energy storage device is connected with the ACDC conversion device, converts the electric energy of an alternating current power grid and stores the electric energy to the energy storage device through an energy storage direct current bus, and in the input process of the electric energy, the voltage and the current of the electric energy are changed according to the requirement of the energy storage device; or the energy storage direct current bus is connected with a plurality of energy storage devices, and different types of energy storage devices or a plurality of same energy storage devices are connected to the same energy storage direct current bus to store and exchange electric energy.
8. The energy storage charging system of claim 1, wherein: the AC/DC conversion device comprises a first-stage conversion, a high-frequency isolation transformer and a second-stage conversion, wherein the first-stage conversion is connected with an alternating current power grid, the second-stage conversion is connected with an energy storage direct current bus, and the high-frequency isolation transformer is connected with the first-stage conversion and the second-stage conversion.
9. The energy storage charging system of claim 2, wherein: the electric energy on the two sides of the high-frequency isolation transformer is isolated by the high-frequency isolation transformer, and electric conductors on the two sides are not directly conducted; high frequency electrical energy is transmitted from one side to the other by electromagnetic induction.
10. The energy storage charging system of claim 2, wherein: the AC/DC conversion device comprises an AC/DC conversion control unit, wherein the AC/DC control unit internally controls the work of a first-stage conversion, a second-stage conversion and a high-frequency isolation transformer, and externally has a communication bus: the communication bus is connected with the system main control unit, and the system main control unit is communicated with the AC/DC conversion device to control the electric energy conversion of the energy storage direct current bus from the power grid, so that the electric energy storage of the energy storage device is realized.
11. The energy storage charging system of claim 1, wherein: the load power supply bus comprises a positive bus and a negative bus, the positive bus and the negative bus are respectively connected to one or more high-frequency isolated AC/DC conversion devices, the other side of each high-frequency isolated AC/DC conversion device is connected to an alternating current power grid, and the power grid power is converted into direct current power to supplement the load power supply bus.
12. The energy storage charging system of claim 1, wherein: the system main control unit controls the conversion voltage, current and power according to the preset optimal control mode according to the charging requirement of the current electric vehicle or other types of loads, the current power and cost condition of a power grid, the current power requirement condition of other charging equipment in the power grid and the characteristics of the energy storage device.
13. The energy storage charging system of claim 1, wherein: the number of the charging interfaces is one or more, power distribution and switching are carried out among different load power supply buses connected with each charging interface, and the system main control controls the voltage current and the power of the load power supply buses through controlling energy storage charging AC/DC, energy storage discharging DC/DC and load power supply ACDC according to the power supply requirements of the electric vehicle or other types of loads.
14. The energy storage charging system of claim 1, wherein: the system master control is a single integrated master control or a distributed master control formed by combining a plurality of control units with a layered architecture.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920584681.9U CN209929995U (en) | 2019-04-24 | 2019-04-24 | Energy storage charging system |
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| CN201920584681.9U CN209929995U (en) | 2019-04-24 | 2019-04-24 | Energy storage charging system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921496A (en) * | 2019-04-24 | 2019-06-21 | 深圳英飞源技术有限公司 | A kind of energy storage charging system |
| CN113525109A (en) * | 2021-08-12 | 2021-10-22 | 长春捷翼汽车零部件有限公司 | Discharge control method and device, electronic equipment and storage medium |
-
2019
- 2019-04-24 CN CN201920584681.9U patent/CN209929995U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921496A (en) * | 2019-04-24 | 2019-06-21 | 深圳英飞源技术有限公司 | A kind of energy storage charging system |
| CN109921496B (en) * | 2019-04-24 | 2024-06-11 | 深圳英飞源技术有限公司 | Energy storage charging system |
| CN113525109A (en) * | 2021-08-12 | 2021-10-22 | 长春捷翼汽车零部件有限公司 | Discharge control method and device, electronic equipment and storage medium |
| CN113525109B (en) * | 2021-08-12 | 2023-02-03 | 长春捷翼汽车零部件有限公司 | Discharge control method and device, electronic equipment and storage medium |
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