CN117601702A - DC charging device, DC charging method and computer-readable storage medium - Google Patents
DC charging device, DC charging method and computer-readable storage medium Download PDFInfo
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- CN117601702A CN117601702A CN202311484742.1A CN202311484742A CN117601702A CN 117601702 A CN117601702 A CN 117601702A CN 202311484742 A CN202311484742 A CN 202311484742A CN 117601702 A CN117601702 A CN 117601702A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present application relates to a direct current charging apparatus, a direct current charging method, and a computer readable storage medium. A direct current charging apparatus according to an aspect of the present application includes: one or more power modules; a wheel charging module coupled with the one or more power modules; a plurality of charging terminals coupled with the wheel charging module and for connecting with a plurality of vehicles to be charged, respectively; and a control module coupled with the one or more power modules and the wheel-charging module and configured to: acquiring connection information of a plurality of vehicles to be charged and a plurality of corresponding charging ends; acquiring charging request information of each vehicle to be charged; determining a target charging vehicle among the plurality of vehicles to be charged based on the connection information and the charging request information; and controlling the wheel charging module to distribute direct current provided by part or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle.
Description
Technical Field
The present application relates generally to electric vehicle technology, and more particularly to a direct current charging apparatus, a direct current charging method, and a computer readable storage medium.
Background
In recent years, electric vehicles enter a high-speed growth period, and charging demands are increasing. The electric automobile is connected with the charging pile for charging, the power battery is full after a certain time, and the charging pile stops supplying power to the electric automobile. However, the charging pile may still be occupied after the power battery of the vehicle is full, and other electric vehicles with charging requirements cannot be charged, so that the equipment utilization rate, the parking space utilization rate and the power utilization rate are maintained at lower levels, the benefit is difficult to promote, and the charging experience of a user is seriously affected.
To meet the increasing charging demands of electric vehicles, more charging piles need to be added in the charging station, which will increase the operation cost of the charging station.
Disclosure of Invention
To solve or at least alleviate one or more of the above problems, the following solutions are provided.
According to a first aspect of the present application, there is provided a direct current charging device including: one or more power modules; a wheel charging module coupled with the one or more power modules; a plurality of charging terminals coupled with the wheel charging module and for connecting with a plurality of vehicles to be charged, respectively; and a control module coupled with the one or more power modules and the wheel-charging module and configured to: acquiring connection information of the plurality of vehicles to be charged and the corresponding plurality of charging ends; acquiring charging request information of each vehicle to be charged; determining a target charging vehicle among the plurality of vehicles to be charged based on the connection information and the charging request information; and controlling the wheel charging module to distribute direct current provided by part or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle.
The direct current charging apparatus according to an embodiment of the present application, wherein the one or more power modules are coupled with an external alternating current power source and configured to convert alternating current provided by the external alternating current power source into direct current.
The dc charging device according to an embodiment of the present application or any of the above embodiments, wherein the control module is further configured to: each of the plurality of vehicles to be charged is awakened and a communication connection is established with each awakened vehicle to receive charging request information from each awakened vehicle to be charged via the communication connection.
The dc charging device according to an embodiment of the present application or any one of the above embodiments, wherein the dc charging device further includes a plurality of first switch units corresponding to the plurality of vehicles to be charged, the control module is further configured to close each of the plurality of first switch units based on a first voltage signal to wake up each of the plurality of vehicles to be charged.
An embodiment of the direct current charging device according to any one of the embodiments above or wherein the control module is further configured to close each of the plurality of first switch units in response to a level change of a first voltage signal generated in response to a connection of the plurality of vehicles to be charged with the corresponding plurality of charging terminals.
An embodiment of the present application or the direct current charging device according to any one of the previous embodiments, wherein the direct current charging device further includes a plurality of second switch units corresponding to the plurality of vehicles to be charged, and the control module is further configured to close each of the plurality of second switch units to establish a communication connection with each of the plurality of vehicles to be charged.
The dc charging device according to an embodiment of the present application or any one of the above embodiments, wherein the charging request information includes one or more of the following: battery charge, requested charge current, requested charge voltage.
The dc charging device according to an embodiment of the present application or any of the above embodiments, wherein the control module is further configured to: connection information indicating connection orders of the plurality of vehicles to be charged and the corresponding plurality of charging terminals is acquired based on level changes of a second voltage signal generated in response to connection of the plurality of charging terminals and the corresponding plurality of vehicles to be charged.
An embodiment of the present application or any one of the above embodiments, wherein the control module is further configured to, after acquiring connection information of the plurality of vehicles to be charged and the corresponding plurality of charging terminals and charging request information of each vehicle to be charged: opening the plurality of first switching units and the plurality of second switching units; and controlling the plurality of vehicles to be charged to enter a sleep mode.
The dc charging device according to an embodiment of the present application or any of the above embodiments, wherein the control module is further configured to: waking up the target charging vehicle and establishing communication connection with the awakened target charging vehicle; controlling the wheel charging module to distribute direct current provided by part or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle; receiving charge state information from the target charging vehicle via the communication connection during charging of the target charging vehicle; and dynamically adjusting a number of some or all of the one or more power modules based on the state of charge information.
According to a second aspect of the present application, there is provided a direct current charging method, the method comprising: acquiring connection information of a plurality of vehicles to be charged and a plurality of corresponding charging ends; acquiring charging request information of each vehicle to be charged; determining a target charging vehicle among the plurality of vehicles to be charged based on the connection information and the charging request information; and distributing direct current provided by some or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle.
The direct current charging method according to an embodiment of the present application, wherein the one or more power modules are coupled with an external alternating current power source and are used to convert alternating current provided by the external alternating current power source into direct current.
According to an embodiment of the present application or the direct current charging method of any one of the above embodiments, the obtaining the charging request information of each vehicle to be charged includes: waking up each of the plurality of vehicles to be charged in response to a level change of the first voltage signal; and establishing a communication connection with each awakened vehicle to be charged to receive charging request information from each awakened vehicle to be charged via the communication connection.
The direct current charging method according to an embodiment or any of the above embodiments of the present application, wherein the level change of the first voltage signal is generated in response to connection of the plurality of vehicles to be charged with the corresponding plurality of charging terminals.
The direct current charging method according to an embodiment of the present application or any one of the above embodiments, wherein the charging request information includes one or more of the following: battery charge, requested charge current, requested charge voltage.
According to an embodiment of the present application or any one of the above embodiments, the obtaining connection information of a plurality of vehicles to be charged and a plurality of corresponding charging terminals includes: and acquiring connection information for indicating the connection sequence of the plurality of vehicles to be charged and the corresponding plurality of charging ends by using the level change of the second voltage signal, wherein the level change of the second voltage signal is generated in response to the connection of the plurality of charging ends and the corresponding plurality of vehicles to be charged.
The direct current charging method according to an embodiment of the present application or any one of the above embodiments, wherein the method further comprises: and after the connection information of the plurality of vehicles to be charged and the corresponding plurality of charging ends and the charging request information of each vehicle to be charged are acquired, controlling the plurality of vehicles to be charged to enter a sleep mode.
The direct current charging method according to an embodiment of the present application or any one of the above embodiments, wherein the method further comprises: waking up the target charging vehicle and establishing communication connection with the awakened target charging vehicle; distributing direct current provided by some or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle; receiving charge state information from the target charging vehicle via the communication connection during charging of the target charging vehicle; and dynamically adjusting a number of some or all of the one or more power modules based on the state of charge information.
According to a third aspect of the present application there is provided a computer readable storage medium having instructions stored therein, characterized in that the instructions, when executed by a processor, cause the processor to perform the direct current charging method according to the second aspect of the present application.
According to the direct current charging scheme of one or more embodiments of the application, a plurality of charging ends for being connected with a plurality of vehicles to be charged can be provided, direct current provided by part or all of one or more power modules is distributed to the charging end corresponding to a target charging vehicle under the control of the control module, hardware multiplexing and alternate charging of the plurality of vehicles to be charged are achieved, hardware deployment cost is greatly reduced, and meanwhile equipment utilization rate, parking space utilization rate, station operation efficiency and charging experience of users are improved. The direct current charging scheme according to one or more embodiments of the present application has the advantages of cost saving, simple control, easy implementation, etc.
Drawings
The foregoing and/or other aspects and advantages of the present application will become more apparent and more readily appreciated from the following description of the various aspects taken in conjunction with the accompanying drawings in which like or similar elements are designated with the same reference numerals. In the drawings:
fig. 1 shows a block diagram of a direct current charging device in accordance with one or more embodiments of the present application.
Fig. 2 shows a block diagram of a direct current charging device in accordance with one or more embodiments of the present application.
Fig. 3 shows a schematic structural diagram of a dc charging device according to one or more embodiments of the present application.
Fig. 4 shows a flow diagram of a direct current charging method in accordance with one or more embodiments of the present application.
Detailed Description
The present application is described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the application are shown. This application may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. The above-described embodiments are provided to fully complete the disclosure herein so as to more fully convey the scope of the application to those skilled in the art.
In the context of this application, terms such as "comprising" and "including" mean that, in addition to having elements and steps that are directly and explicitly recited in the description and claims, the technical solution of the present application does not exclude the presence of other elements and steps not directly or explicitly recited.
In the context of this application, unless specifically stated otherwise, terms such as "first" and "second" do not denote a sequential order of units in terms of time, space, size, etc., but rather are merely used to distinguish one unit from another.
In the context of the present application, "coupled" should be understood to include the case of direct transfer of electrical energy or electrical signals between two units, or the case of indirect transfer of electrical energy or electrical signals via one or more intermediate units.
Hereinafter, various exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings.
Fig. 1 shows a block diagram of a direct current charging device in accordance with one or more embodiments of the present application.
As shown in fig. 1, the direct current charging apparatus 100 includes one or more power modules 110, a wheel charging module 120 coupled with the power modules 110, a plurality of charging terminals 130, and a control module 140.
The power module 110 may be coupled with an external ac power source (e.g., a three-phase ac power grid) and configured to convert ac current provided by the external ac power source to dc current. Alternatively, the power module 110 may be implemented as an AC/DC power module.
The wheel charging module 120 may be implemented as a multi-pass gate switch for gating some or all of the one or more power modules 110 to the charging terminals 130, thereby enabling power distribution to the respective charging terminals 130.
A plurality of charging terminals 130 are coupled with the wheel charging module 120 and are adapted to be connected with a plurality of vehicles to be charged, respectively. Alternatively, the charging terminal 130 may be implemented as a plurality of charging guns and each charging gun may be connected to one vehicle to be charged.
The control module 140 is coupled with the power module 110 and the wheel-charging module 120 and configured to: acquiring connection information of a plurality of vehicles to be charged and a plurality of corresponding charging ends 130; acquiring charging request information of each vehicle to be charged; determining a target charging vehicle among the plurality of vehicles to be charged based on the connection information and the charging request information; and controlling the wheel charging module 120 to distribute the direct current provided by some or all of the one or more power modules 110 to the charging terminal 130 corresponding to the target charging vehicle to charge the target charging vehicle.
In one embodiment, the control module 140 may determine a charging policy and a target charging vehicle based on the connection information and the charging request information, control the wheel charging module 120 to connect at least one power module 110 to a charging terminal 130 corresponding to the target charging vehicle based on the determined charging policy to charge the target charging vehicle, and optionally transmit the determined charging policy to the target charging vehicle. Alternatively, the connection information may include information indicating a connection order of the plurality of vehicles to be charged and the corresponding plurality of charging terminals 130, and the charge request information may include, but is not limited to, a battery level, a request charging current, a request charging voltage, and the like. Alternatively, the charging policy may include a charging sequence for each vehicle to be charged, a charging duration allocated to each vehicle to be charged, a charging power allocated to each vehicle to be charged, and the like. For example, when there are 10 vehicles to be charged, the charging strategy may be implemented to charge for a predetermined length of time (e.g., 30 minutes) for each vehicle to be charged to ensure that each vehicle to be charged is charged with a partial amount of electricity during a parking period of the vehicle to be charged. For example, when the charging duration of a certain vehicle to be charged is 30 minutes, which is determined based on the charging request information, the charging policy may be implemented to charge the vehicle to be charged preferentially, and release the parking space in time, which is beneficial to improving the operation efficiency of the station.
In one embodiment, the control module 140 may wake each of the plurality of vehicles to be charged and establish a communication connection with each of the awakened vehicles to receive charge request information from each of the awakened vehicles to be charged via the communication connection prior to a charging operation on the target charging vehicle. For example, the control module 140 may include a CAN communication unit (not shown in fig. 1) to establish a communication connection with each awakened vehicle to be charged via the CAN communication unit and to receive charge request information from each awakened vehicle to be charged via the communication connection.
In one embodiment, the direct current charging apparatus 100 may further include a plurality of first switching units (not shown in fig. 1) corresponding to a plurality of vehicles to be charged, wherein each of the first switching units may correspond to one vehicle to be charged. The control module 140 may be configured to close (e.g., sequentially close) each of the plurality of first switch units based on the first voltage signal to wake up each of the plurality of vehicles to be charged. Alternatively, the level change of the first voltage signal may be generated in response to connection of a plurality of vehicles to be charged with a corresponding plurality of charging terminals 130, and the control module 140 may be configured to close the first switching unit in response to the level change of the first voltage signal to wake up the vehicles to be charged. The voltage signal simulates the physical connection (for example, the gun inserting) between a plurality of vehicles to be charged and a plurality of corresponding charging terminals to wake up the vehicles to be charged, so that the physical connection (for example, the gun inserting) is prevented from being reestablished to wake up the vehicles to be charged, and the efficiency and the safety of the charging operation are improved.
In one embodiment, the direct current charging apparatus 100 may further include a plurality of second switch units (not shown in fig. 1) corresponding to the plurality of vehicles to be charged, and the control module 140 may be configured to close (e.g., sequentially close) each of the plurality of second switch units to establish a communication connection with each of the plurality of vehicles to be charged.
In one embodiment, the control module 140 may be configured to obtain connection information indicating a connection order of the plurality of vehicles to be charged with the corresponding plurality of charging terminals 130 based on a level change of a second voltage signal generated in response to the connection of the plurality of charging terminals 130 with the corresponding plurality of vehicles to be charged.
In one embodiment, the control module 140 may turn off the plurality of first switch units and the plurality of second switch units after acquiring connection information of the plurality of vehicles to be charged and the corresponding plurality of charging terminals 130 and charging request information of each vehicle to be charged, and control the plurality of vehicles to be charged to enter a sleep mode; after determining the target charging vehicle and the charging policy based on the connection information and the charging request information, the control module 140 may re-close the first and second switching units corresponding to the target charging vehicle to wake up the target charging vehicle and establish a communication connection with the wake-up target charging vehicle, and control the wheel charging module 120 to distribute the direct current provided by some or all of the one or more power modules 110 to the charging terminal 130 corresponding to the target charging vehicle according to the charging policy to charge the target charging vehicle. During charging of the target charging vehicle, the control module 140 may receive state of charge information (e.g., current battery level, charge voltage, charge current, etc.) from the target charging vehicle via the communication connection and dynamically adjust a number of some or all of the one or more power modules 110 based on the state of charge information. For example, the number of power modules may be gradually reduced as the current battery level of the target charging vehicle indicated by the charge state information gradually increases.
In one or more embodiments, the control module 140 may implement alternate charging of a plurality of vehicles to be charged by controlling the wheel charging module 120 based on the determined charging policy, thereby improving charging efficiency, and fully utilizing the capability of each power module 110 to output electric energy, so as to avoid resource waste. In addition, compared with alternating-current charging, the direct-current charging device according to one or more embodiments of the present application can obtain connection information, charging request information and charging state information in a charging process, so as to facilitate determining and dynamically adjusting a charging policy, actively initiate a charging operation on a target charging vehicle, and simultaneously actively stop the charging operation, thereby being capable of flexibly distributing charging services and being beneficial to improving equipment utilization.
According to the direct current charging device of one or more embodiments, a plurality of charging ends for being connected with a plurality of vehicles to be charged can be provided, direct current provided by part or all of one or more power modules is distributed to the charging end corresponding to a target charging vehicle under the control of the control module, hardware multiplexing and alternate charging of the plurality of vehicles to be charged are achieved, hardware deployment cost is greatly reduced, and meanwhile equipment utilization rate, parking space utilization rate, station operation efficiency and charging experience of users are improved. For example, as the number of charging terminals increases, a direct current charging device according to one or more embodiments of the present application can significantly reduce hardware deployment costs. The direct current charging device according to one or more embodiments of the present application has advantages of cost saving, simple control, easy implementation, etc., for example, the direct current charging device according to one embodiment of the present application can implement a wheel charging function by means of a single controller, a multiplexing switch, and a plurality of charging guns.
The circuit configuration and the operation principle of the dc charging device according to one or more embodiments of the present application will be described in detail with reference to fig. 2 to 3.
Fig. 2 shows a block diagram of a direct current charging device in accordance with one or more embodiments of the present application.
As shown in fig. 2, the direct current charging apparatus 200 includes a plurality of AC/DC power modules 210, a wheel charging module 220 coupled with the AC/DC power modules 210, a plurality of charging terminals 230, a charging controller 240, and a wheel charging controller 250. Illustratively, the solid lines in fig. 2 may represent electrical coupling, and the dashed lines in fig. 2 may represent communicative coupling.
The AC/DC power module 210 may be coupled with an external alternating current power source (e.g., a three-phase alternating current grid) and configured to convert alternating current provided by the external alternating current power source into direct current. As shown in fig. 2, AC/DC power module 210 may be coupled with the a, B, and C phases, respectively, of a three-phase alternating current grid. It should be noted that the number of AC/DC power modules 210 and charging terminals 230 shown in fig. 2 is merely for illustrating a schematic structure of the DC charging device 200, and is not a specific limitation of the number of modules in the DC charging device 200. It should be noted that, the charge controller 240 and the wheel charge controller 250 shown in fig. 2 may be integrated into one integral control component or implemented as separate control components.
The wheel charging module 220 may be implemented as a multi-pass gate switch for gating some or all of the one or more AC/DC power modules 210 to the charging terminals 230, thereby enabling power distribution to the respective charging terminals 230.
A plurality of charging terminals 230 are coupled with the wheel charging module 220 and are used to connect with a plurality of vehicles to be charged, respectively. For example, the charging terminal 230 may be implemented as a plurality of charging guns and each charging gun may be connected with one vehicle to be charged. For example, an electronic lock may be provided in the charging terminal 230, which may control a switch with the power of the auxiliary power source, such as controlling the electronic lock to lock the charging terminal when the auxiliary power source is powered at 12V, and unlock the charging terminal when the auxiliary power source is powered off.
The charge controller 240 is communicatively coupled with the power module 210, the wheel charge module 220, and the wheel charge controller 250 and is configured to acquire charge request information for each vehicle to be charged and transmit the acquired charge request information to the wheel charge controller 250. Optionally, the charge controller 240 may include a CAN communication unit (not shown in fig. 2) to establish a communication connection with each awakened vehicle to be charged via the CAN communication unit and to receive charge request information from each awakened vehicle to be charged via the communication connection. Alternatively, the charge request information may include, but is not limited to, a battery level, a requested charge current, a requested charge voltage, and the like.
The wheel charging controller 250 may be configured to acquire connection information of a plurality of vehicles to be charged and a corresponding plurality of charging terminals 130, determine a target charging vehicle among the plurality of vehicles to be charged based on the connection information and the charging request information, and control the wheel charging module 220 to distribute direct current provided by some or all of the one or more AC/DC power modules 210 to the charging terminal 230 corresponding to the target charging vehicle to charge the target charging vehicle. Alternatively, the connection information may include information indicating the connection order of the plurality of vehicles to be charged with the corresponding plurality of charging terminals 230.
In one embodiment, the wheel charge controller 250 may determine a charging strategy and a target charging vehicle based on the connection information and the charging request information, and control the wheel charge module 220 to connect the at least one AC/DC power module 210 to the charging terminal 230 corresponding to the target charging vehicle based on the determined charging strategy to charge the target charging vehicle. Alternatively, the charging policy may include a charging sequence for each vehicle to be charged, a charging duration allocated to each vehicle to be charged, a charging power allocated to each vehicle to be charged, and the like. Therefore, the wheel charging controller 250 can realize the alternate charging of a plurality of vehicles to be charged by controlling the wheel charging module 220 based on the determined charging strategy, so that the charging efficiency is improved, the capability of each power module for outputting electric energy is fully utilized, and the resource waste is avoided. Compared with alternating-current charging, the direct-current charging device according to one or more embodiments of the present application can obtain connection information and charging request information through a communication protocol, so that a charging strategy can be determined and adjusted conveniently, charging operation on a target charging vehicle can be initiated actively, and meanwhile, charging operation can be stopped actively, so that charging services can be allocated flexibly, and improvement of equipment utilization rate is facilitated.
In one embodiment, the wheel charging controller 250 may control the plurality of vehicles to be charged to enter the sleep mode after acquiring connection information of the plurality of vehicles to be charged and the corresponding plurality of charging terminals 230 and charging request information of each vehicle to be charged; after determining the target charging vehicle and the charging strategy based on the connection information and the charging request information, the wheel-charging controller 250 may re-wake the target charging vehicle and establish a communication connection with the awakened target charging vehicle, and control the wheel-charging module 220 to distribute the direct current provided by some or all of the one or more AC/DC power modules 210 to the charging terminals 230 corresponding to the target charging vehicle according to the charging strategy to charge the target charging vehicle. During charging of the target charge vehicle, the charge controller 240 may receive state of charge information (e.g., present battery charge, charge voltage, charge current, etc.) from the target charge vehicle via the communication connection and send the state of charge information to the wheel charge controller 250 such that the wheel charge controller 250 dynamically adjusts the number of some or all of the one or more AC/DC power modules 210 based on the state of charge information to achieve dynamic power allocation to the charging end 230 corresponding to the target charge vehicle. For example, the wheel charge controller 250 may control to decrease the number of the AC/DC power modules 210 connected as the current battery level of the target charging vehicle indicated by the charge state information gradually increases.
Fig. 3 shows a schematic structural diagram of a dc charging device according to one or more embodiments of the present application, wherein the dc charging device 300 may be implemented by means of the dc charging device 100 and the dc charging device 200 described above with reference to fig. 1 and 2.
As shown in fig. 3, the direct current charging apparatus 300 includes switches K1, K2, K3, K4, ks+, ks-, S1, S3, and resistors R1, R2, R3, R4, wherein the first switching unit described above with reference to fig. 1 and 2 may be implemented as switch S3, and the second switching unit described above with reference to fig. 1 and 2 may be implemented as ks+ and Ks-.
As an example, the interaction of signals or energy between the direct current charging device 300 and the vehicle is also shown in fig. 3, where dc+ and DC-represent the charging power transmitted between the direct current charging device 300 and the vehicle (e.g., the direct current into which the alternating current provided by the external alternating current power source is converted by the power module), a+ and a-represent the power transmitted between the direct current charging device 300 and the vehicle provided by the auxiliary power source (e.g., the auxiliary power source of 12V or 24V), s+ and S-represent the signals (e.g., the charging request information) transmitted by the communication connection (e.g., the CAN communication connection) established between the direct current charging device 300 and the vehicle, CC2 represents the first voltage signal (i.e., the charging connection confirmation signal of the vehicle to be charged and the charging end detected at the vehicle end), CC1 represents the second voltage signal (i.e., the charging connection confirmation signal of the charging end and the vehicle to be charged) described above with reference to fig. 1 and 2.
As shown in fig. 3, when the vehicle to be charged is connected to the charging terminal (e.g., charging gun) of the direct current charging device 300, the switch S3 is closed, the voltage at U2 is reduced (e.g., from 12V to 6V) by the voltage dividing action of the resistors R3, R5, and thus the detected first voltage signal CC2 exhibits a level change. Thus, the controller of the dc charging device 300 (e.g., the control module 140 described above with reference to fig. 1 or the wheel charging controller 250 described above with reference to fig. 2) may close the switch S3 in response to the level change of the first voltage signal CC2 to wake up the vehicle to be charged by simulating the physical connection (e.g., the gun) of the vehicle to be charged with the corresponding charging terminal using the first voltage signal CC2, and may avoid re-establishing the physical connection (e.g., re-gun) to wake up the vehicle to be charged, thereby improving the efficiency and safety of the charging operation.
As shown in fig. 3, when the charging terminal (e.g., a charging gun) of the direct current charging device 300 is connected to the vehicle to be charged, the switch S1 is closed, the voltage at U1 is reduced (e.g., from 6V to 4V) by the voltage dividing action of the resistors R1, R2, R4, and thus the detected second voltage signal CC1 is changed in level. Thus, the controller of the direct current charging apparatus 300 (e.g., the control module 140 described above with reference to fig. 1 or the wheel charging controller 250 described above with reference to fig. 2) may acquire connection information indicating the connection order of the plurality of vehicles to be charged and the corresponding plurality of charging terminals based on the level change of the second voltage signal CC 1.
It should be noted that fig. 3 only illustrates the interaction of signals or energy between one charging terminal of the dc charging device 300 and one vehicle, and the dc charging device 300 may include multiple charging terminals to interact with multiple vehicles to be charged without departing from the spirit and scope of the present application. As an example, a wheel charging process implemented using the direct current charging apparatus 300 will be further described below.
The plurality of charging terminals may be connected with a plurality of vehicles to be charged, respectively, before the charging operation is performed on the vehicles. The state of the second voltage signal CC1 of each charging terminal may be read by a controller (e.g., the control module 140 described above with reference to fig. 1 or the wheel charging controller 250 described above with reference to fig. 2) of the direct current charging device 300 to obtain connection information indicating the connection order of the plurality of vehicles to be charged and the corresponding plurality of charging terminals. The controller of the dc charging device 300 may then sequentially gate the respective charging terminals to wake up each vehicle to be charged and establish a communication connection with the awakened vehicle to be charged. For example, the controller of the dc charging device 300 may close K3 and K4 to provide an auxiliary power source for the vehicle to be charged connected to the corresponding charging terminal, close S3 to wake up the vehicle to be charged connected to the corresponding charging terminal with CC2, and close ks+ and Ks "to establish a communication connection with the vehicle to be charged connected to the corresponding charging terminal and obtain charging request information of the vehicle to be charged through the established communication connection. In one embodiment, switches K3, K4 and Ks+, ks-may be simultaneously closed to provide auxiliary power to and establish communication with the vehicle to be charged to which the respective charging terminal is connected, respectively.
After acquiring connection information of a plurality of vehicles to be charged and a corresponding plurality of charging terminals and charging request information of each vehicle to be charged, the controller of the direct current charging device 300 may open the closed switch and control the plurality of vehicles to be charged to enter a sleep mode, and may determine a target charging vehicle and a charging policy based on the connection information and the charging request information, thereby entering a charging stage for the target charging vehicle.
During the charging phase, the controller of the dc charging device 300 may close K3, K4 to provide an auxiliary power source for the target charging vehicle connected to the respective charging end, close S3 to wake up the target charging vehicle connected to the respective charging end with CC2, close ks+, ks-to establish a communication connection with the target charging vehicle connected to the respective charging end and obtain charging state information received by the target charging vehicle through the established communication connection, and close K1, K2 to distribute dc current provided by some or all of the one or more power modules to the charging end corresponding to the target charging vehicle to charge the target charging vehicle. During charging of the target charging vehicle, charge state information may be continuously received from the target charging vehicle via the communication connection, and a number of some or all of the one or more power modules may be dynamically adjusted based on the charge state information. In one embodiment, switches K3, K4 and Ks+, ks-may be simultaneously closed to provide auxiliary power to and establish communication with, respectively, a target charging vehicle to which the respective charging terminal is connected. In one embodiment, switches K1, K2 and Ks+, ks-may be simultaneously closed to respectively allocate charging power to and establish communication with the target charging vehicle to which the respective charging terminal is connected.
Alternatively, a direct current charging device according to one or more embodiments of the present application may be integrated with other charging devices (e.g., each charging terminal has a respective charging module) to obtain greater charging power while guaranteeing a charging operation of each charging terminal, thereby improving device utilization, parking space utilization, station operation efficiency, and charging experience for a user while compromising costs.
Fig. 4 shows a flow diagram of a direct current charging method in accordance with one or more embodiments of the present application. The various steps shown in fig. 4 may be implemented by means of the dc charging device described in fig. 1-3 above.
As shown in fig. 4, in step S401, connection information of a plurality of vehicles to be charged and a corresponding plurality of charging terminals is acquired.
In step S403, charging request information of each vehicle to be charged is acquired.
Alternatively, in step S403, each of the plurality of vehicles to be charged may be awakened in response to the level change of the first voltage signal, and a communication connection may be established with each of the awakened vehicles to receive charge request information from each of the awakened vehicles to be charged via the communication connection. Alternatively, the level change of the first voltage signal may be generated in response to connection of a plurality of vehicles to be charged with a corresponding plurality of charging terminals. Alternatively, the charge request information may include, but is not limited to, a battery level, a requested charge current, a requested charge voltage, and the like. Alternatively, the connection information indicating the connection order of the plurality of vehicles to be charged and the corresponding plurality of charging terminals may be acquired using a level change of the second voltage signal, which is generated in response to the connection of the plurality of charging terminals and the corresponding plurality of vehicles to be charged. Alternatively, after connection information of a plurality of vehicles to be charged and a corresponding plurality of charging terminals and charging request information of each vehicle to be charged are acquired, the plurality of vehicles to be charged may be controlled to enter a sleep mode.
In step S405, a target charging vehicle is determined among the plurality of vehicles to be charged based on the connection information and the charging request information.
In step S407, the direct current provided by some or all of the one or more power modules is distributed to a charging terminal corresponding to a target charging vehicle to charge the target charging vehicle.
Alternatively, the target charging vehicle may be awakened and a communication connection may be established with the awakened target charging vehicle, and the direct current provided by some or all of the one or more power modules is distributed to the charging end corresponding to the target charging vehicle, so as to charge the target charging vehicle. Charge state information may be received from the target charging vehicle via the communication connection during charging of the target charging vehicle, and a number of some or all of the one or more power modules may be dynamically adjusted based on the charge state information.
According to the direct current charging method, a plurality of charging ends for being connected with a plurality of vehicles to be charged can be provided, direct current provided by part or all of one or more power modules is distributed to the charging end corresponding to a target charging vehicle, hardware multiplexing and alternate charging of the plurality of vehicles to be charged are achieved, hardware deployment cost is greatly reduced, and meanwhile equipment utilization rate, parking space utilization rate, station operation efficiency and charging experience of users are improved. The direct current charging method according to one or more embodiments of the present application has advantages of cost saving, simple control, easy implementation, and the like.
In addition, the present application may also be implemented as a computer readable storage medium having instructions stored therein, characterized in that the instructions, when executed by a processor, cause the processor to perform a direct current charging method according to an aspect of the present application. Computer-readable media, as referred to in this application, include any type of computer storage media which can be accessed by a general purpose or special purpose computer. By way of example, a computer-readable medium may comprise a RAM, ROM, EPROM, E PROM, register, hard disk, removable disk, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage device, or any other temporary or non-temporary medium that can be used to carry or store desired program code elements in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Disk, as used herein, typically replicates data magnetically, while disk replicates data optically with a laser. Combinations of the above should also be included within the scope of computer-readable media. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
The personal information of the relevant user possibly related in each embodiment of the application is personal information which is strictly required by laws and regulations, is processed actively provided by the user in the process of using the product/service or is generated by using the product/service and is obtained by authorization of the user according to legal, legal and necessary principles and based on reasonable purposes of business scenes.
The personal information of the user processed by the applicant may vary depending on the specific product/service scenario, and may relate to account information, equipment information, driving information, vehicle information or other related information of the user, depending on the specific scenario in which the user uses the product/service. The applicant would treat the user's personal information and its processing with a high diligence.
The applicant has very important consideration to the safety of personal information of users, and has adopted safety protection measures which meet industry standards and are reasonably feasible to protect the information of the users and prevent the personal information from unauthorized access, disclosure, use, modification, damage or loss.
The foregoing is merely a specific embodiment of the present application, and the scope of the present application is not limited thereto. Other possible variations or substitutions will occur to those skilled in the art from the teachings disclosed herein and are intended to be within the scope of the present application. In the case of no conflict, the embodiments of the present application and the features of the embodiments may also be combined with each other.
Claims (10)
1. A direct current charging device, characterized in that the direct current charging device comprises:
one or more power modules;
a wheel charging module coupled with the one or more power modules;
a plurality of charging terminals coupled with the wheel charging module and for connecting with a plurality of vehicles to be charged, respectively; and
a control module coupled with the one or more power modules and the wheel-charging module and configured to:
acquiring connection information of the plurality of vehicles to be charged and the corresponding plurality of charging ends;
acquiring charging request information of each vehicle to be charged;
determining a target charging vehicle among the plurality of vehicles to be charged based on the connection information and the charging request information; and
and controlling the wheel charging module to distribute direct current provided by part or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle.
2. The DC charging apparatus of claim 1, wherein the one or more power modules are coupled to an external AC power source and configured to convert AC current provided by the external AC power source to DC current,
Wherein the control module is further configured to:
waking up each of the plurality of vehicles to be charged and establishing a communication connection with each of the woken-up vehicles to receive charge request information from each of the woken-up vehicles via the communication connection,
wherein the direct current charging apparatus further comprises a plurality of first switch units corresponding to the plurality of vehicles to be charged, the control module is further configured to close each of the plurality of first switch units based on a first voltage signal to wake up each of the plurality of vehicles to be charged,
wherein the control module is further configured to close each of the plurality of first switch units in response to a change in level of a first voltage signal generated in response to a connection of the plurality of vehicles to be charged with the corresponding plurality of charging terminals.
3. The direct current charging apparatus of claim 1, wherein the direct current charging apparatus further comprises a plurality of second switch units corresponding to the plurality of vehicles to be charged, the control module being further configured to close each of the plurality of second switch units to establish a communication connection with each of the plurality of vehicles to be charged.
4. The direct current charging apparatus according to claim 1, wherein the charging request information includes one or more of: battery charge, requested charge current, requested charge voltage.
5. The direct current charging apparatus of claim 1, wherein the control module is further configured to:
obtaining connection information indicating a connection order of the plurality of vehicles to be charged and the corresponding plurality of charging terminals based on a level change of a second voltage signal generated in response to connection of the plurality of charging terminals and the corresponding plurality of vehicles to be charged,
wherein the control module is further configured to, after acquiring connection information of the plurality of vehicles to be charged and the corresponding plurality of charging terminals and charging request information of each vehicle to be charged:
opening the plurality of first switching units and the plurality of second switching units; and
controlling the plurality of vehicles to be charged to enter a sleep mode,
wherein the control module is further configured to:
waking up the target charging vehicle and establishing communication connection with the awakened target charging vehicle;
controlling the wheel charging module to distribute direct current provided by part or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle;
Receiving charge state information from the target charging vehicle via the communication connection during charging of the target charging vehicle; and
the number of some or all of the one or more power modules is dynamically adjusted based on the state of charge information.
6. A method of dc charging, the method comprising:
acquiring connection information of a plurality of vehicles to be charged and a plurality of corresponding charging ends;
acquiring charging request information of each vehicle to be charged;
determining a target charging vehicle among the plurality of vehicles to be charged based on the connection information and the charging request information; and
and distributing direct current provided by part or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle.
7. The DC charging method of claim 6, wherein the one or more power modules are coupled to an external AC power source and are configured to convert an AC current provided by the external AC power source to a DC current,
the method for acquiring the charging request information of each vehicle to be charged comprises the following steps:
Waking up each of the plurality of vehicles to be charged in response to a level change of the first voltage signal; and
establishing a communication connection with each awakened vehicle to be charged to receive charge request information from each awakened vehicle to be charged via the communication connection,
wherein a level change of the first voltage signal is generated in response to connection of the plurality of vehicles to be charged with the corresponding plurality of charging terminals.
8. The direct current charging method of claim 6, wherein the charging request information includes one or more of: battery charge, requested charge current, requested charge voltage.
9. The direct current charging method according to claim 6, wherein obtaining connection information of a plurality of vehicles to be charged and a corresponding plurality of charging terminals comprises:
obtaining connection information indicating a connection order of the plurality of vehicles to be charged and the corresponding plurality of charging terminals using a level change of a second voltage signal generated in response to connection of the plurality of charging terminals and the corresponding plurality of vehicles to be charged,
wherein the method further comprises:
after connection information of the plurality of vehicles to be charged and the corresponding plurality of charging terminals and charging request information of each vehicle to be charged are acquired, the plurality of vehicles to be charged are controlled to enter a sleep mode,
Wherein the method further comprises:
waking up the target charging vehicle and establishing communication connection with the awakened target charging vehicle;
distributing direct current provided by some or all of the one or more power modules to a charging end corresponding to the target charging vehicle so as to charge the target charging vehicle;
receiving charge state information from the target charging vehicle via the communication connection during charging of the target charging vehicle; and
the number of some or all of the one or more power modules is dynamically adjusted based on the state of charge information.
10. A computer readable storage medium having instructions stored therein, which when executed by a processor, cause the processor to perform the direct current charging method according to any one of claims 6-9.
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