CN114069784A - Mobile power supply system and method - Google Patents
Mobile power supply system and method Download PDFInfo
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- CN114069784A CN114069784A CN202111345784.8A CN202111345784A CN114069784A CN 114069784 A CN114069784 A CN 114069784A CN 202111345784 A CN202111345784 A CN 202111345784A CN 114069784 A CN114069784 A CN 114069784A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
-
- 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
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
- H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Landscapes
- 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 embodiment of the invention discloses a mobile power supply system and a mobile power supply method. The system comprises: the device comprises a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller and power output equipment; the battery pack is respectively connected with the discharge controller and the power output equipment, wherein the mobile carrier is used for bearing the battery pack, the discharge controller and the power output equipment to move to a target address based on a received mobile instruction containing the target address; the discharging controller is used for sending a discharging control instruction to the battery pack; a battery pack for outputting electric energy to the electric power output device based on the received discharge control instruction; and the power output device is used for transmitting the electric energy output by the battery pack to the target device so as to charge the target device. According to the technical scheme of the embodiment of the invention, the problem that the charging service cannot be provided for the target equipment in time can be solved, the flexibility of the charging service is improved, and the user experience is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of energy power supply, in particular to a mobile power supply system and a mobile power supply method.
Background
The existing power system is installed in a fixed place, and a transmission mode of a fixed cable is adopted on a transmission side, so that power is supplied to electric vehicles and gates for power limiting or places needing emergency power supply. However, the existing stationary power system needs a user to transport the device to be charged to the stationary power system to realize the charging process; the charging service cannot be provided in time, the charging service is inflexible, and the user experience is low.
Disclosure of Invention
The embodiment of the invention provides a mobile power supply system and a mobile power supply method, which are used for providing charging service for target equipment in time, improving the flexibility of the charging service and increasing the user experience.
In a first aspect, an embodiment of the present invention provides a mobile power supply system, including: the device comprises a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller and power output equipment; the battery pack is connected with the discharge controller and the power output device, respectively, wherein,
the mobile carrier is used for bearing the battery pack, the discharge controller and the output equipment to move to a target address based on a received mobile instruction containing the target address;
the discharge controller is used for sending a discharge control instruction to the battery pack;
the battery pack is used for outputting electric energy to the electric power output equipment based on the received discharge control instruction;
the power output device is used for transmitting the electric energy output by the battery pack to the target device so as to charge the target device.
In a second aspect, an embodiment of the present invention further provides a mobile power supply method, which is applied to a mobile power supply system, where the mobile power supply system includes a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller, and a power output device; the battery pack is respectively connected with the discharge controller and the power output equipment, and the method comprises the following steps:
moving the battery pack, the discharge controller and the output equipment to a target address based on a received moving instruction containing the target address through the moving carrier;
sending a discharge control instruction to the battery pack through the discharge controller;
outputting, by the battery pack, electrical energy to the power output device based on the received discharge control instruction;
transmitting, by the power output apparatus, the electric energy output by the battery pack to the target apparatus to perform a charging operation on the target apparatus.
The embodiment of the invention provides a mobile power supply system, which comprises: the device comprises a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller and power output equipment; the battery pack is respectively connected with the discharging controller and the power output equipment, the battery pack, the discharging controller and the power output equipment are moved to a target address through the mobile carrier based on a received moving instruction containing the target address, the discharging controller sends a discharging control instruction to the battery pack to enable the battery pack to output electric energy to the power output equipment, the power output equipment transmits the electric energy to the target equipment to complete charging operation of the target equipment, the problem that charging service cannot be timely provided for the target equipment is solved, the flexibility of the charging service is improved, and the user experience is improved.
In addition, the mobile power supply method provided by the invention corresponds to the system and has the same beneficial effects.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a structural diagram of a mobile power supply system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a mobile power supply system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of charging an electric car according to an embodiment of the present invention;
fig. 4 is a flowchart of a mobile power supply method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
Fig. 1 is a structural diagram of a mobile power supply system according to an embodiment of the present invention. As shown in fig. 1, the system of the present embodiment includes: a mobile carrier 10, a battery pack 11 placed on the mobile carrier, a discharge controller 12 and a power output device 13; the battery pack 11 is connected to a discharge controller 12 and a power output device 13, respectively, wherein,
and the mobile carrier 10 is used for carrying the battery pack 11, the discharge controller 12 and the power output equipment 13 to move to the target address based on the received movement instruction containing the target address.
In a specific implementation, when the target device needs to be charged, a moving instruction may be sent to the mobile carrier 10, where the moving instruction includes a target address of the target device. The mobile carrier 10 may move the battery pack 10, the discharge controller 12, and the power output device 13 to a target address based on the received movement instruction to perform a charging operation for the target device. For example, the mobile carrier 10 may be a movable vehicle such as a truck, and the mobile carrier 10 may be a manually driven vehicle, or may be an intelligent automatically driven vehicle, which is not limited in this embodiment of the present invention. It should be noted that the target device may be a trolley that needs to be charged, or a device in a power plant that needs to provide electric energy.
Further, after receiving the moving command, the mobile carrier 10 may determine an expected time to reach the target address according to the target address and the current address included in the moving command, and may feed back the expected time to the target device, so that the user can better know the charging progress.
And a discharge controller 12 for sending a discharge control instruction to the battery pack 11.
Specifically, after the mobile carrier 10 reaches the destination address, the discharge controller 12 may send a discharge control command to the battery pack 11, and the discharge control command triggers the battery pack 11 to perform a discharge operation. Illustratively, the discharge control command includes at least one discharge parameter of discharge duration, discharge power, maximum current and cut-off voltage, and the battery pack 11 may output electric energy according to the discharge parameter in the discharge control command.
And a battery pack 11 for outputting electric energy to the electric power output device 13 based on the received discharge control instruction.
Specifically, after receiving the discharge control command, the battery pack 11 may output corresponding electric energy to the power output device 13 based on the discharge parameter included in the discharge control command. It should be noted that, when the discharge parameters such as the discharge duration, the discharge power, the maximum current, the cut-off voltage, and the like are not specified in the discharge control instruction, the battery pack 11 may output the electric energy according to the maximum discharge power that can be currently provided until the electric quantity of the target device is fully charged, or the electric energy that can be provided by the battery pack 11 is empty, and stop the discharge operation.
Optionally, the system provided in the embodiment of the present invention further includes: the battery fixing equipment is connected with the battery pack and is arranged on the movable carrier; and the battery fixing equipment is used for placing the battery pack so as to fix the battery pack on the movable carrier.
Specifically, the battery pack 11 needs to be kept stable on the mobile carrier 10 to ensure the safety of each device in the system and the safety of discharging to the target device. Therefore, the system provided by the embodiment of the invention further comprises a battery fixing device, and the battery pack can be placed in the battery fixing device, so that the battery pack and the mobile carrier are kept fixed and can operate together. For example, the battery fixing device may be a frame body fixedly connected with the mobile carrier.
And a power output device 13 for transmitting the electric power output from the battery pack 11 to the target device to perform a charging operation for the target device.
In a specific implementation, the power output device 13 may convert the electric energy output by the battery pack 11 into a form acceptable to the target device, and transmit the electric energy to the target device to realize a charging operation of the target device. For example, the power output device may be determined according to the type of power that the target device can accept.
Optionally, the power output device includes a dc charging pile, and the system further includes: the direct current converter is respectively connected with the direct current charging pile and the battery pack; the direct current converter is used for converting the received electric energy into direct current electric energy with a preset voltage level when receiving the electric energy output by the battery pack, and transmitting the direct current electric energy to the direct current charging pile; and the direct current charging pile is used for transmitting the received direct current electric energy to the target equipment so as to charge the target equipment.
Specifically, when the target device needs a dc power supply, the power output device includes a dc charging pile. The system also comprises a direct current converter connected with the direct current charging pile and the battery pack. After the battery pack outputs electric energy, the electric energy is converted into direct current electric energy with a preset voltage level through the direct current converter. It should be noted that, the dc converter may set the preset voltage level according to different target devices, so as to ensure that the output voltage level is suitable for the target device, and ensure the safety of the target device.
Further, the converted direct current electric energy is input into a direct current charging pile, and the direct current charging pile is connected with the target device so as to input the direct current electric energy into the target device and complete the charging operation of the target device.
Optionally, the power output device further comprises a vehicle-to-grid discharge device; and the vehicle-to-grid discharging equipment is used for converting the received electric energy into alternating current electric energy when receiving the electric energy output by the battery pack, and transmitting the alternating current electric energy to the target equipment so as to charge the target equipment.
Specifically, when the target device is a power plant supply device, an alternating current power source is required, and the power output device is a vehicle-to-grid discharging device. And converting the electric energy output by the battery pack into alternating current electric energy with a preset voltage grade through the vehicle-to-power grid discharging equipment. For example, the preset voltage level may be 220V, so as to improve the charging efficiency and meet the charging requirement of the power plant.
The embodiment of the invention provides a mobile power supply system, which comprises: the device comprises a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller and power output equipment; the battery pack is respectively connected with the discharging controller and the power output equipment, the battery pack, the discharging controller and the power output equipment are moved to a target address through the mobile carrier based on a received moving instruction containing the target address, the discharging controller sends a discharging control instruction to the battery pack to enable the battery pack to output electric energy to the power output equipment, the power output equipment transmits the electric energy to the target equipment to complete charging operation of the target equipment, the problem that charging service cannot be timely provided for the target equipment is solved, the flexibility of the charging service is improved, and the user experience is improved.
Example two
The embodiment of the invention is optimized on the basis of the technical schemes. The same or corresponding terms as those in the above embodiments are not explained in detail herein.
The embodiment of the invention is different from the above embodiments in that, optionally, the number of the battery packs is two or more, the number of the discharge controllers is the same as that of the battery packs, and the discharge controllers are connected with the battery packs in a one-to-one correspondence manner.
Specifically, the discharge controllers are connected with the battery packs in a one-to-one correspondence manner, so that one discharge controller can only control the discharge operation of one battery pack, different discharge control instructions can be sent to each battery pack, and the discharge operation of each battery pack can be controlled more flexibly. It should be noted that, a person skilled in the art may also set one discharge controller to control two or more battery packs to perform discharge operations according to practical application requirements, and the embodiment of the present invention is not limited thereto.
Optionally, the system provided in the embodiment of the present invention further includes: the battery selector is used for determining the battery pack for providing electric energy in each battery pack, sending a closing instruction to the switch component connected with each battery pack for providing electric energy, and sending a control output instruction to the discharge controller corresponding to the battery pack for providing electric energy; the switch component is used for receiving a closing instruction sent by the battery selector and performing corresponding closing operation based on the closing instruction so as to connect the battery pack with the power output equipment; and the discharge controller is also used for sending a discharge control instruction to the corresponding battery pack based on the received control output instruction.
In particular, the switching means comprise a relay and/or a switching diode. The battery selector can determine a battery pack for providing electric energy in each battery pack, and control a switch component corresponding to the battery pack to be in a closed state so as to establish connection between the battery pack and the power output equipment and provide the electric energy for the target equipment. The battery selector can also send a control output instruction to a discharge controller corresponding to the battery pack providing the electric energy, so that the corresponding discharge controller controls the battery pack to perform a discharge operation.
Optionally, the battery selector comprises: and the state acquisition module is connected with each battery pack and used for acquiring the battery state of each battery pack, determining whether the battery state of each battery pack meets a preset condition, and if so, determining the battery pack meeting the preset condition as the battery pack used for providing electric energy.
Specifically, the battery selector includes a state acquisition module for acquiring the battery state of each battery pack. The battery state comprises battery capacity, whether the battery is in fault and the like, if the battery state meets a preset condition, the battery pack can be used for providing electric energy, a control output instruction can be sent to a discharge controller corresponding to the battery pack meeting the preset condition, and a closing instruction can be sent to a switch component corresponding to the battery pack meeting the preset condition. For example, the preset condition includes that the battery level is greater than a preset threshold, and the battery pack is in a healthy idle state.
Optionally, the system provided in the embodiment of the present invention further includes: a charging controller connected with the battery pack and the mobile carrier; and the charging controller is used for monitoring the residual value of the electric quantity of the battery pack, and generating a charging instruction to be sent to the mobile carrier when the residual value of the electric quantity is smaller than a preset threshold value so as to enable the mobile carrier to move to a preset charging address.
It should be noted that, when the electric quantity of each battery pack in the mobile power supply system is insufficient, each battery pack needs to be charged in time, so as to supply power to other devices in time. Therefore, the system further comprises a charging controller, which is used for monitoring the remaining value of the electric quantity of each battery pack, when the remaining value of the electric quantity of each battery pack is monitored to be smaller than a preset threshold value, the fact that each battery pack cannot provide electric energy for other equipment currently is indicated, charging processing needs to be carried out, the charging controller can generate a charging instruction to be sent to the mobile carrier, further, a charging address can be stored in advance, the charging instruction containing the charging address is generated, and the charging instruction is sent to the mobile carrier, so that the mobile carrier can move to the preset charging address. When the remaining value of the electric quantity is greater than or equal to the preset threshold value, each battery pack does not need to be charged.
Further, when the charge controller monitors that the remaining value of the electric quantity is smaller than a preset threshold value, the charge controller may also search whether a charging device for charging the mobile power supply system exists in a preset range, and if so, acquire a charging address of each charging device, and determine a charging address closest to the mobile power supply system as a target charging address. And generating a charging instruction based on the target charging address and sending the charging instruction to the mobile carrier so that the mobile carrier runs to the target charging address to charge each battery pack. If the charging address does not exist, the equipment such as the bearing battery pack and the like can be moved to the default charging address according to the pre-stored default charging address to perform charging operation.
According to the mobile power supply system provided by the embodiment of the invention, the battery pack meeting the preset condition can be selected through the battery selector to discharge the target equipment, so that the safety of the discharging process is ensured; and the electric quantity state of each battery pack can be detected through the charging controller, each battery pack is charged in time, and the discharging service can be better provided for the target equipment.
EXAMPLE III
The above detailed description is made on the corresponding embodiment of the mobile power supply system, and specific application scenarios are given below in order to further make the technical solutions of the present method clear to those skilled in the art.
In one embodiment, the mobile carrier may be a truck. Fig. 2 is a schematic diagram of a mobile power supply system according to an embodiment of the present invention, as shown in fig. 2, the system includes a truck, six battery packs, a bidirectional dc charging pile, a charging and discharging control system, a multi-channel dc converter, and a vehicle-to-grid (V2G) device. The charging and discharging control system can comprise at least one charging and discharging controller used for controlling the charging and discharging operation of each battery pack.
Furthermore, the battery fixing equipment can be fixed on a truck, the battery packs are respectively placed in the battery fixing equipment, and communication and control between the battery packs and the charging and discharging control system and between the battery packs and the bidirectional direct-current charging pile and other equipment are realized through the high-low voltage connectors arranged on the battery fixing equipment, so that direct-current quick charging is carried out on each electric car.
Specifically, battery package, multichannel direct current converter and two-way direct current fill electric pile combined work, can realize providing direct current electric energy for equipment such as trolley-bus. The battery, the charge and discharge control system and the vehicle-to-power grid (V2G) equipment can provide alternating current for a power plant, and an emergency power supply function is realized.
Fig. 3 is a schematic diagram of charging an electric car according to an embodiment of the present invention; as shown in fig. 3, each charge and discharge controller may be in bus communication with each battery pack and connected to the vehicle-to-grid device through a switching element. The system further includes a battery selector for determining the switching state of each of the switching elements K1-K4 based on the battery state of each of the battery packs, thereby determining the battery pack that supplies the electric power.
Illustratively, when switches K1 and K4 are closed, battery pack 1 and battery pack 4 are connected to the vehicle-to-grid device to provide 220V ac. Furthermore, the battery selector can be connected with each charge and discharge controller to input control output instructions to each charge and discharge controller.
Further, the battery pack may include a battery management module configured to monitor battery states such as a state of health and a state of charge of the battery pack, and send the battery states to the battery selector, so that the battery selector determines the on/off state of the switch component based on the battery states.
The battery selector may acquire the battery status of each battery pack. The battery state comprises battery electric quantity, whether the battery is in fault or not, and the like, if the battery state meets the preset condition, the battery pack can be used for providing electric energy, a control output instruction can be sent to a charge and discharge controller corresponding to the battery pack meeting the preset condition, and a closing instruction can be sent to a switch component corresponding to the battery pack meeting the preset condition. For example, the preset condition includes that the battery level is greater than a preset threshold, and the battery pack is in a healthy idle state. Further, if the battery state does not meet the preset condition, the switch component corresponding to the battery pack is kept in an off state,
for example, the battery selector may also monitor whether the current state of the system is in a discharging condition, where the discharging condition may be that there is no abnormality in the battery pack, the insulation device, the switch component, and the like. And when the current state meets the discharging condition, sending a discharging control instruction to each charging and discharging controller so as to enable each battery pack to normally discharge. When the current state does not meet the discharging condition, the abnormal conditions of the battery pack, the insulating equipment, the switch component and the like are indicated, then an abnormal instruction can be generated and sent to the truck, the abnormal instruction comprises an overhaul address, and after the truck receives the abnormal instruction comprising the overhaul address, the equipment such as the battery pack and the like is borne and moved to the overhaul address so as to overhaul the mobile power supply system in time, so that the safety and the effectiveness of each equipment in the power supply process are ensured.
Furthermore, a switch component can be packaged between the direct current charging pile and the battery pack, and each switch component is controlled through the battery selector, so that the battery pack for providing electric energy is determined, the switch component corresponding to the battery pack is closed, connection between the battery pack and the direct current charging pile is established, and direct current is provided for target equipment such as an electric car.
Specifically, when the charge-discharge controller monitors that the remaining value of the electric quantity is smaller than the preset threshold value, the charge-discharge controller can also generate a charge instruction according to a pre-stored charge address and send the charge instruction to the mobile carrier, so that the mobile carrier can drive to the charge address to charge each battery pack.
According to the mobile power supply system provided by the embodiment of the invention, the battery pack meeting the preset condition can be selected through the battery selector to discharge the target equipment, and the battery packs can be charged in time through detecting the electric quantity state of each battery pack, so that the discharge service can be better provided for the target equipment, and the safety of the discharge process is ensured.
Example four
Fig. 4 is a flowchart of a mobile power supply method according to an embodiment of the present invention, and as shown in fig. 4, the mobile power supply method according to the embodiment of the present invention is applied to a mobile power supply system, where the mobile power supply system includes a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller, and a power output device; the battery pack is respectively connected with the discharge controller and the power output equipment, wherein the mobile power supply method comprises the following steps:
s101, moving the battery pack, the discharge controller and the power output equipment to the target address through the mobile carrier based on the received mobile command containing the target address.
And S102, sending a discharging control command to the battery pack through the discharging controller.
And S103, outputting the electric energy to the electric power output equipment through the battery pack based on the received discharge control command.
And S104, transmitting the electric energy output by the battery pack to the target device through the power output device so as to charge the target device.
On the basis of any optional technical scheme in the embodiment of the present invention, optionally, the power output device includes a dc charging pile, and the system further includes: the direct current converter is respectively connected with the direct current charging pile and the battery pack; wherein,
when receiving the electric energy output by the battery pack, the direct current converter converts the received electric energy into direct current electric energy with a preset voltage level and transmits the direct current electric energy to the direct current charging pile;
and transmitting the received direct current electric energy to the target equipment through the direct current charging pile so as to charge the target equipment.
On the basis of any optional technical scheme in the embodiment of the invention, optionally, the power output equipment further comprises vehicle-to-grid discharging equipment;
when receiving the electric energy output by the battery pack, the vehicle-to-grid discharging device converts the received electric energy into alternating current electric energy and transmits the alternating current electric energy to the target device so as to charge the target device.
On the basis of any optional technical scheme in the embodiment of the invention, optionally, the number of the battery packs is two or more, the number of the discharge controllers is the same as that of the battery packs, and the discharge controllers are connected with the battery packs in a one-to-one correspondence manner.
On the basis of any optional technical scheme in the embodiment of the present invention, optionally, the method further includes:
determining a battery pack for providing electric energy in each battery pack through a battery selector, sending a closing instruction to a switch component connected with each battery pack for providing electric energy, and sending a control output instruction to a discharge controller corresponding to the battery pack for providing electric energy;
receiving a closing instruction sent by a battery selector through a switch component, and performing corresponding closing operation based on the closing instruction so as to connect the battery pack with the power output equipment;
and sending a discharging control instruction to the corresponding battery pack through the discharging controller based on the received control output instruction.
On the basis of any optional technical solution in the embodiment of the present invention, optionally, the battery selector includes: the state acquisition module acquires the battery state of each battery pack through the state acquisition module, determines whether the battery state of each battery pack meets a preset condition, and if so, determines the battery pack meeting the preset condition as the battery pack for providing electric energy.
On the basis of any optional technical solution in the embodiment of the present invention, optionally, the switch component includes a relay and/or a switch diode.
On the basis of any optional technical scheme in the embodiment of the present invention, optionally, the method further includes:
the charging controller monitors the residual value of the electric quantity of the battery pack, and when the residual value of the electric quantity is smaller than a preset threshold value, a charging instruction is generated and sent to the mobile carrier, so that the mobile carrier moves to a preset charging address.
On the basis of any optional technical scheme in the embodiment of the present invention, optionally, the method further includes:
and placing the battery pack through the battery fixing equipment so as to fix the battery pack on the movable carrier.
The mobile power supply method provided by the embodiment of the invention is applied to a mobile power supply system, wherein the mobile power supply system comprises a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller and power output equipment; the battery pack is respectively connected with the discharge controller and the power output equipment, wherein the mobile power supply method comprises the following steps: moving the load-bearing battery pack, the discharge controller and the power output equipment to a target address through the mobile carrier based on a received mobile instruction containing the target address; sending a discharge control instruction to the battery pack through the discharge controller; outputting electric energy to the electric power output device through the battery pack based on the received discharge control instruction; and transmitting the electric energy output by the battery pack to the target device through the power output device so as to perform charging operation on the target device. The problem that the charging service cannot be timely provided for the target device is solved, the flexibility of the charging service is improved, and the user experience is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A mobile power supply system, comprising: the device comprises a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller and power output equipment; the battery pack is connected with the discharge controller and the power output device, respectively, wherein,
the mobile carrier is used for bearing the battery pack, the discharge controller and the power output equipment to move to a target address based on a received mobile instruction containing the target address;
the discharge controller is used for sending a discharge control instruction to the battery pack;
the battery pack is used for outputting electric energy to the electric power output equipment based on the received discharge control instruction;
the power output device is used for transmitting the electric energy output by the battery pack to the target device so as to charge the target device.
2. The system of claim 1, wherein the power output device comprises a dc charging post, the system further comprising: the direct current converter is respectively connected with the direct current charging pile and the battery pack; wherein,
the direct current converter is used for converting the received electric energy into direct current electric energy with a preset voltage level when receiving the electric energy output by the battery pack, and transmitting the direct current electric energy to the direct current charging pile;
and the direct current charging pile is used for transmitting the received direct current electric energy to the target equipment so as to charge the target equipment.
3. The system of claim 2, wherein the power output device further comprises a vehicle-to-grid discharge device;
and the vehicle-to-grid discharging equipment is used for converting the received electric energy into alternating current electric energy when receiving the electric energy output by the battery pack, and transmitting the alternating current electric energy to the target equipment so as to charge the target equipment.
4. The system of claim 1, wherein the number of the battery packs is two or more, the number of the discharge controllers is the same as the number of the battery packs, and the discharge controllers are connected in a one-to-one correspondence with the battery packs.
5. The system of claim 4, further comprising: switch parts respectively connected to the battery pack and the power output apparatus, and a battery selector connected to each of the switch parts and each of the discharge controllers, wherein,
the battery selector is used for determining a battery pack for providing electric energy in each battery pack, sending a closing instruction to the switch component connected with each battery pack for providing electric energy, and sending a control output instruction to the discharge controller corresponding to the battery pack for providing electric energy;
the switch component is used for receiving a closing instruction sent by the battery selector and performing corresponding closing operation based on the closing instruction so as to connect the battery pack with the power output equipment;
and the discharge controller is also used for sending a discharge control instruction to the corresponding battery pack based on the received control output instruction.
6. The system of claim 5, wherein the battery selector comprises:
and the state acquisition module is connected with each battery pack and used for acquiring the battery state of each battery pack, determining whether the battery state of each battery pack meets a preset condition, and if so, determining the battery pack meeting the preset condition as the battery pack used for providing electric energy.
7. The system of claim 5, wherein the switching component comprises a relay and/or a switching diode.
8. The system of claim 1, further comprising: a charge controller connected to the battery pack and the mobile carrier;
the charging controller is used for monitoring the electric quantity residual value of the battery pack, and when the electric quantity residual value is smaller than a preset threshold value, a charging instruction is generated and sent to the mobile carrier, so that the mobile carrier moves to a preset charging address.
9. The system of claim 1, further comprising: the battery fixing equipment is connected with the battery pack and is arranged on the movable carrier;
the battery fixing equipment is used for placing the battery pack so that the battery pack is fixed on the movable carrier.
10. A mobile power supply method is characterized by being applied to a mobile power supply system, wherein the mobile power supply system comprises a mobile carrier, a battery pack placed on the mobile carrier, a discharge controller and power output equipment; the battery pack is connected with the discharge controller and the power output device respectively, wherein the mobile power supply method comprises the following steps:
moving the battery pack, the discharge controller and the power output equipment to a target address based on a received moving instruction containing the target address through the mobile carrier;
sending a discharge control instruction to the battery pack through the discharge controller;
outputting, by the battery pack, electrical energy to the power output device based on the received discharge control instruction;
transmitting, by the power output apparatus, the electric energy output by the battery pack to the target apparatus to perform a charging operation on the target apparatus.
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| CN202111345784.8A CN114069784A (en) | 2021-11-15 | 2021-11-15 | Mobile power supply system and method |
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