CN108808751B - Power supply system and method for battery replacement station - Google Patents
Power supply system and method for battery replacement station Download PDFInfo
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- CN108808751B CN108808751B CN201710285833.0A CN201710285833A CN108808751B CN 108808751 B CN108808751 B CN 108808751B CN 201710285833 A CN201710285833 A CN 201710285833A CN 108808751 B CN108808751 B CN 108808751B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 47
- 238000012544 monitoring process Methods 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000012806 monitoring device Methods 0.000 claims description 15
- 238000013500 data storage Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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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
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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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
-
- 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)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a power supply system and a power supply method for a power changing station, wherein the power supply system for the power changing station comprises a power grid connecting end; a plurality of battery compartments, each for receiving a replaceable battery pack; the charging and discharging machine is connected to the power grid connecting end, in the charging mode, the power grid connecting end supplies a charging power supply to the battery pack in the battery bin through the charging and discharging machine so as to charge the battery pack, and in the discharging mode, the charging and discharging machine discharges the battery pack in the battery bin; an emergency power supply output port; and the uninterruptible power supply controller is connected to the charge-discharge machine and monitors the power grid connecting end, when the power grid connecting end is not powered off, the charge-discharge machine is controlled to work in a charging mode, and when the power grid connecting end is powered off, the charge-discharge machine is controlled to work in a discharging mode so that the battery pack supplies power to the emergency power supply output port. The power supply system of the power changing station can provide emergency power output by adopting the battery pack when the power grid connection end is powered off, so that the cost and the space of the power changing station are saved.
Description
Technical Field
The present invention relates to a power supply circuit device and a power supply system, and in particular, to a power supply system and a power supply method for a power conversion station.
Background
An uninterruptible power supply system is usually required for an electric automobile power changing station, and the switching between a rectification state and an inversion state can be rapidly realized through devices such as a rectifier, an inverter and the like, so that the normal operation of the system at the moment of power failure is ensured.
Most of the existing uninterruptible power supply systems use a maintenance-free lead-acid storage battery to supply power to the system of the power conversion station when power is off. The maintenance-free lead-acid storage battery pack has the problems of low specific energy, large volume and the like, and the service life of the maintenance-free lead-acid storage battery pack is greatly influenced by the conditions of temperature, charging, voltage and current.
Therefore, the conventional uninterruptible power supply system needs a large space and has no measure for controlling the service life of the maintenance-free lead-acid storage battery pack, so that the uninterruptible power supply system has higher cost.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a power supply system of a power changing station and a power supply method of the power changing station applied to the power supply system of the power changing station, so as to save cost and space of the power changing station.
According to an aspect of the invention, a power supply system of a power conversion station is provided, which includes: a power grid connection end; a plurality of battery compartments, each for receiving a replaceable battery pack; the charging and discharging machine is connected to the power grid connecting end, the charging and discharging machine is provided with a charging mode and a discharging mode, in the charging mode, the power grid connecting end provides a charging power supply for charging the battery pack in the battery bin through the charging and discharging machine, and in the discharging mode, the charging and discharging machine discharges the battery pack in the battery bin; an emergency power output port connected to the charge and discharge machine; and the uninterruptible power supply controller is connected to the charge-discharge machine, monitors the power grid connecting end, controls the charge-discharge machine to work in a charging mode when the power grid connecting end is not powered off, and controls the charge-discharge machine to work in a discharging mode when the power grid connecting end is powered off so that the battery pack supplies power to the emergency power supply output port.
Optionally, when the power grid connection end is not powered off, the power grid connection end provides a system power supply of the power conversion station power supply system; and when the power grid connecting end is powered off, the emergency power supply output port provides a system power supply of the power supply system of the power conversion station.
Optionally, the method further comprises: the new energy power supply is connected to the charge and discharge machine and is monitored by the uninterruptible power supply controller; when the power grid connection end is not powered off, the charging and discharging machine works in a charging mode, the new energy power supply and the power grid connection end provide the charging power supply together, and when the new energy power supply is enough to provide the charging power supply, the new energy power supply feeds back electric energy to the power grid connection end; when the power grid connecting end is powered off, the new energy power supply supplies power to the emergency power supply output port, and when the new energy power supply is not enough to supply power to the emergency power supply output port, the charge and discharge machine works in a discharge mode to enable the battery pack to supply power to the emergency power supply output port.
Optionally, the new energy power source comprises: a solar power supply; a wind energy power supply; water energy.
Optionally, when the charging and discharging machine operates in a charging mode, the uninterruptible power supply controller obtains battery parameters of the battery pack in each battery compartment according to the identifier of each battery compartment, and further determines the battery compartment to be charged.
Optionally, each battery pack comprises a relay, and is connected with the charge and discharge machine through the relay, the relay is a normally closed relay, when the power grid connection end is not powered off, the uninterruptible power supply controller controls the relay of the battery pack which does not need to be charged to be disconnected, and the charge and discharge machine charges the battery pack which needs to be charged; when the power grid connecting end is powered off, the relay of one or more battery packs is closed, and the one or more battery packs are discharged through the charge-discharge machine to supply power to the emergency power supply output port.
Optionally, each battery compartment corresponds to a gateway, and is connected to the ups controller through the corresponding gateway, where the gateway provides the identifier for the corresponding battery compartment.
Optionally, the battery pack includes a battery controller, the battery controller monitors the battery parameters of the battery pack, and each gateway is connected to the battery controller of the battery pack in the corresponding battery compartment and sends the battery parameters to the ups controller.
Optionally, each battery compartment is connected to a corresponding gateway by a power supply line to enable the charging and discharging machine to supply power to the gateway; and the battery controller of each battery pack is connected to a corresponding gateway through a CAN bus so as to communicate with the gateway.
Optionally, a system power supply of the power supply system of the power exchanging station is a power supply of an uninterruptible power supply controller, a relay, and a gateway.
Optionally, comprising: and the background monitoring device is connected to the uninterruptible power supply controller through a CAN bus and is used for real-time monitoring, data storage and construction of a battery information network of the power supply system of the power exchange station, and the background monitoring device and the uninterruptible power supply controller share a power supply.
Optionally, the emergency power output port provides a high-voltage power output and a low-voltage power output, the high-voltage power output supplies power to a lighting device in a power supply system of the power conversion station, and the low-voltage power output provides the system power of the power supply system of the power conversion station.
Optionally, the uninterruptible power supply controller includes: the monitoring module is used for monitoring the power grid connection end; and the control module is used for controlling the charging and discharging machine to work in a charging mode when the monitoring module monitors that the power grid connecting end is not powered off, and controlling the charging and discharging machine to work in a discharging mode when the monitoring module monitors that the power grid connecting end is powered off so that the battery pack supplies power to the emergency power supply output port.
Optionally, the power supply station power supply system is a new energy power supply, and the monitoring module is further configured to monitor the new energy power supply.
Optionally, the uninterruptible power supply controller further includes: the receiving module is used for receiving the identification of the battery bin and the battery parameters of the battery pack; the judging module is used for judging whether the battery bin corresponding to the battery pack is charged or discharged according to the battery parameters of the battery pack; and the sending module is used for sending a signal for controlling whether the battery bin is charged and discharged to the battery bin according to the judgment result of the judging module.
According to an aspect of the present invention, there is also provided a power supply method for a power swapping station, which is applied to the power supply system for a power swapping station, where the power swapping station power supply method includes: the uninterruptible power supply controller monitors the power grid connection end; when the power grid connecting end is not powered off, the uninterruptible power supply controller enables the charge-discharge machine to work in a charging mode, and the power grid connecting end supplies a charging power supply to the battery pack in the battery bin through the charge-discharge machine so as to charge the battery pack; when the power grid connecting end is powered off, the uninterruptible power supply controller enables the charge-discharge machine to work in a discharge mode, and the charge-discharge machine enables the battery pack in the battery bin to discharge so as to supply power to the emergency power supply output port.
Optionally, when the grid connection end is not powered off, the grid connection end provides a system power supply; and when the power grid connecting end is powered off, the emergency power supply output port provides system power.
Optionally, the power supply system of the battery replacement station further includes a new energy power supply connected to the charge and discharge machine and monitored by the uninterruptible power supply controller, the new energy power supply and the power grid connection terminal together provide the charging power supply when the power grid connection terminal is not powered off, and the new energy power supply feeds back electric energy to the power grid connection terminal when the new energy power supply is sufficient to provide the charging power supply; when the power grid connecting end is powered off, the new energy power supply supplies power to the emergency power supply output port, and when the new energy power supply is not enough to supply power to the emergency power supply output port, the charge and discharge machine works in a discharge mode to enable the battery pack to supply power to the emergency power supply output port.
In view of the above, the power supply system of the battery replacement station and the power supply method applied to the power supply system of the battery replacement station of the present invention can provide emergency power output by using a battery pack for replacement when the power connection end of the power grid is powered off, and do not need a battery pack of an uninterruptible power supply system in the prior art, so that cost and system space can be effectively saved. In addition, the replaceable battery pack has large energy, and more stored energy is stored under the condition of the same weight or volume, and the replaceable battery pack is used for providing emergency power output when the power grid connection end is cut off, so that the utilization rate of the battery pack is improved. Furthermore, the power supply system of the battery changing station provided by the invention can better monitor the battery parameters of the battery pack through the uninterruptible power supply controller and background monitoring, manage the charging and discharging of the battery, balance the battery, improve the consistency of the battery core, control the temperature of the battery, prolong the service life of the battery and improve the safety coefficient.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic diagram of a power supply system of a swapping station according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a battery pack connection according to an embodiment of the invention;
FIG. 3 is a schematic diagram of an exemplary UPS controller according to the present invention;
FIG. 4 is a power supply flow diagram of an embodiment of the present invention with the grid connection terminals not powered off;
FIG. 5 is a power supply flow chart of the power grid connection terminal power off according to the embodiment of the invention;
fig. 6 is a schematic diagram of a power supply system of a power conversion station when a power connection end of a power grid is powered off according to an embodiment of the present invention; and
fig. 7 is a schematic diagram of another power supply system of a power conversion station when the power connection terminal of the power grid is powered off according to the embodiment of the invention.
Reference numerals
110 battery bin
111 battery pack
112 battery controller
113 Relay
120 charging and discharging machine
130 electric network connection terminal
140 UPS controller
150 solar panel
160 gateway
170 background monitoring device
180 emergency power supply output port
190 twisted pair shielded wire
191 supply line
192 CAN bus
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the invention.
In order to overcome the defects of the prior art, the invention provides a power supply system and a power supply method of a power conversion station, which save cost and space of the power conversion station.
A specific embodiment of the power supply system for a power swapping station provided by the present invention is described below with reference to fig. 1 and fig. 2. In this embodiment, the power supply system of the battery replacement station includes a plurality of battery storage spaces 110, a charge/discharge machine 120, an uninterruptible power supply controller 140, an emergency power output port 180, and a grid connection terminal 130 for connecting a grid power supply.
Each battery bay 110 houses a replacement battery pack 111. The battery pack 111 may be a power battery for replacement of an electric vehicle. In other words, the electric vehicle moves to the battery replacement station, the power battery on the electric vehicle is replaced by the power battery in the battery storage space 110 of the battery replacement station, and the power battery replaced in the battery storage space 110 is charged at the battery replacement station. Optionally, one battery compartment 110 houses one battery pack 111. Each battery pack 111 includes a battery controller 112. The battery controller 112 monitors battery parameters of the battery pack 111. The battery parameters may include battery pack charge, temperature, current, voltage, etc. In the present embodiment, each battery pack 111 further includes a relay 113, and the relay 113 is used to control the opening and closing of the circuit of each battery pack 111. The relay 113 is preferably a normally closed relay 113.
The charging and discharging machine 120 is used to charge and discharge the battery pack 111 in each battery compartment 110. The charge and discharge machine 120 has a charge mode and a discharge mode. In the charging mode, the grid power of the grid connection 130 is supplied to the battery pack 111 in the battery compartment 110 via the charging and discharging machine 120 for charging. In the discharge mode, the charge and discharge machine 120 discharges the battery pack 111 in the battery bay 110. Specifically, the charging and discharging machine 120 is switchable between a rectification mode (charging mode), an inversion mode (discharging mode), a rectification mode, and an inversion mode in parallel. When the charging and discharging machine 120 is in the rectification mode, the battery packs 111 in the battery bins 110 store energy. When the charging and discharging machine 120 is in the inverter mode, the battery packs 111 in the battery compartments 110 are discharged.
The ups controller 140 is connected to the charge and discharge machine 120. The ups controller 140 monitors the grid connection 130. When the grid power of the grid connection 130 is not cut off, the charge and discharge machine 120 is operated in the charge mode, and when the grid power of the grid connection 130 is cut off, the charge and discharge machine 120 is operated in the discharge mode. When the grid power of the grid connection terminal 130 is not powered off, the ups controller 140 obtains the battery parameters of the battery packs 111 in the battery bays 110 according to the identifiers of the battery bays 110, and further determines the battery bays 110 to be charged. For example, the ups controller 140 may communicate with the battery controller 112 in the battery pack 111 to obtain battery parameters of the battery pack 111 in the corresponding battery bay 110. If the battery parameter indicates that the battery pack 111 is not fully charged, the ups controller 140 determines that the battery pack 111 needs to be charged. Further, the ups controller 140 may control the relay 113 of the charging pack 111 that does not need to be charged to be turned off, so that the charging and discharging machine 120 charges only the charging pack 111 in the battery bay 110 that needs to be charged.
In the present embodiment, each battery bin 110 corresponds to a gateway 160. For example, battery bay 1 corresponds to gateway 1; the battery bin 2 corresponds to the gateway 2; the battery bin N corresponds to the gateway N. Each battery bay 110 is connected to the ups controller 140 through a corresponding gateway 160. Gateway 160 provides an identification to the corresponding battery bay 110 to distinguish between different battery bays 110 (other means of providing an identification to each battery bay 110 may also be used and are within the scope of the present invention). Further, each gateway 160 is connected to the battery controller 112 of the battery pack 111 in the corresponding battery bay 110, and transmits the battery parameters monitored by the battery controller 112 to the ups controller 130.
The emergency power output port 180 is connected to the charge and discharge machine 120. The emergency power output port 180 includes a high voltage power output and a low voltage power output. And the output of the high-voltage power supply is used for supplying power to a lighting device in the power supply system of the power switching station. The low voltage power supply output is used to power the system power supply. In other words, the low voltage power output is used to power ups controller 120, gateway 160, relay 113, etc.
Specifically, in this embodiment, the power supply system of the battery replacement station further includes a new energy power source. Such as solar panel 150 shown in figure 1. In some variations, the new energy source may also include wind energy, water energy, and the like. In this embodiment, the solar panel 150 is connected to the charge and discharge machine 120 and can be monitored by the ups controller 140. When the grid power at the grid connection 130 is not powered off, the charge and discharge machine 120 operates in a charging mode, and the solar panel 150 and the grid power at the grid connection 130 together provide the charging power for the battery pack 111. When the solar panel 150 is sufficient to provide a charging power source for the battery pack 111, the solar panel 150 feeds back the power to the grid connection 130. When the grid power at the grid connection 130 is off, the solar panel 150 supplies power to the emergency power output port 180, and the solar panel 150 is insufficient to supply power to the emergency power output port 180, the charge and discharge machine 120 operates in a discharge mode to allow the battery pack 111 to supply power to the emergency power output port 180.
Specifically, in this embodiment, the power supply system of the power swapping station further includes a background monitoring device 170. The background monitoring device 170 is connected to the ups controller 140, and is used for real-time monitoring, data storage, and building a battery information network of the power supply system of the power station. Further, the background monitoring device 170 and the ups controller 140 have the same power supply (system power). In other words, if the ups controller 140 is powered by the grid power of the grid connection 130, the background monitoring device 170 is also powered by the grid power of the grid connection 130; if the ups controller 140 is powered from the emergency power output port 180, the background monitoring device 170 is also powered from the emergency power output port 180. The ups controller 140 sends the battery parameters of each battery pack 111 to the background monitoring device 170 for monitoring, storing and controlling.
Further, the power supply system of the power conversion station provided by the invention is deployed by adopting a CAN bus. As shown in fig. 1, the grid connection 130, the solar panel 150 and the emergency power output port 180 are connected to the charge and discharge machine 120 through a power supply line 191. Each battery bay 110 is connected to the charge and discharge machine 120 via a power supply line 191. Each battery bay 110 is also connected to a respective gateway 160 via a power supply line 191 so that the gateway 160 can obtain power via the charge and discharge machines 120. In addition, the ups controller 140 is connected to the charge and discharge machine 120 through a CAN bus for communication. Each battery bay 110 (battery controller 112 of battery pack 111) is also connected to a respective gateway 160 via a CAN bus for communication. Each gateway 160 is connected to the ups controller 140 via a CAN bus for communication. The background monitor 170 is connected to the ups controller 140 through the CAN bus for communication. Twisted shielded wires 190 are also provided between the various components connected via the CAN bus to reduce signal noise.
In some embodiments, the ups controller 140 includes a monitoring module 141 and a control module 142. The monitoring module 141 is used to monitor the grid connection 130. In the embodiment where the power supply system of the power conversion station includes the new energy power source 150, the monitoring module 141 is further configured to monitor the new energy power source 150. The control module 142 is configured to control the charging and discharging machine 120 to operate in a charging mode when the monitoring module 141 monitors that the grid connection terminal 130 is not powered off, and control the charging and discharging machine 120 to operate in a discharging mode when the monitoring module 141 monitors that the grid connection terminal 130 is powered off, so that the battery pack supplies power to the emergency power output port 180. In some embodiments, the ups controller 140 further comprises a receiving module 143, a determining module 144, and a sending module 145. The receiving module 143 is configured to receive an identifier of a battery bin and a battery parameter of a battery pack. Specifically, the receiving module 143 communicates with the gateway 160 to obtain the identifier of the battery bin, and obtains the battery parameters of the battery pack through the battery controller of the battery pack. The determining module 144 is configured to determine whether a battery bin corresponding to a battery pack is charged or discharged according to a battery parameter of the battery pack. The sending module 145 is configured to send a signal for controlling whether the battery bin is charged or discharged to the battery bin according to the determination result of the determining module 144. Specifically, the transmission module 145 is configured to transmit a signal for controlling the opening and closing of the relay 113 of the battery compartment, and further control whether the battery compartment is charged or discharged.
The invention provides a power supply method for a power swapping station, which adopts a power supply system of the power swapping station as shown in figure 1. The power supply method of the battery replacement station comprises the following steps: the uninterrupted power supply controller monitors the power grid connection end; when the power grid power supply at the power grid connecting end is not powered off, the charging and discharging machine works in a charging mode, and the power grid power supply at the power grid connecting end supplies a charging power supply to the battery pack in the battery bin through the charging and discharging machine so as to charge; when the power supply of the power grid at the power grid connection end is powered off, the charge-discharge machine works in a discharge mode, and the charge-discharge machine discharges the battery pack in the battery bin to supply power to the output port of the emergency power supply.
Fig. 4 and 5 are diagrams illustrating a power supply flow when the grid power supply at the grid connection end is not powered off and the grid power supply at the grid connection end is powered off, respectively.
Fig. 4 is a power supply flow chart of the embodiment of the invention for supplying power to the power grid when the power supply of the power grid connection terminal is not powered off. As shown in fig. 4, the grid power supply at the grid connection is not powered off and the charge and discharge machine operates in a charging mode (rectification mode) S210.
Preferably, a solar panel is used to provide a charging power source for each battery compartment. If the solar panel is sufficient for charging the battery pack to be charged, step S220 is executed to provide a charging power supply to each battery compartment by using the solar panel, and a system power supply is provided to the ups controller (and the gateway, the relay, and the background monitoring device) by using the grid power supply at the grid connection end. And step S230, if all the batteries are fully charged, the solar panel feeds back electric energy to the power grid power supply at the power grid connection end.
And when the energy absorbed by the solar panel is not enough for charging the battery pack to be charged, the step S240 is to charge the battery pack by the power supply of the power grid connected to the power grid, and to provide the system power supply for the ups controller (and the gateway, the relay and the background monitoring device).
Further, as described above, the battery pack to be charged is determined by the ups controller. Specifically, the uninterruptible power supply controller acquires battery parameters of battery packs in corresponding battery positions through the gateway, and disconnects the relays of the fully charged battery packs, so that the charging motor only charges one or more battery packs needing to be charged.
Referring next to fig. 5, fig. 5 is a power supply flow chart illustrating the power failure of the grid power supply at the grid connection end according to the embodiment of the present invention.
First, the grid supply to the grid connection is switched off S310. It will be appreciated by those skilled in the art that the steps shown in fig. 5 may also be employed when the grid power at the grid connection is abnormal.
And step S320, supplying power to the output port of the emergency power supply by the solar panel.
And step S330, if the electric energy of the solar panel is not enough to supply power to the output port of the emergency power supply, the battery pack supplies power to the output port of the emergency power supply.
In a preferred embodiment, as shown in fig. 6, when the grid power 130 at the grid connection end is powered off, the relay of the battery pack in each battery compartment 110 is closed, and each battery pack supplies power to the emergency power output port 180 through the charge and discharge machine 120 (discharge mode of the charge and discharge machine) to supply power to the ups controller 140, the background monitoring device 170, the gateway 160, and the relay in the battery pack.
In one variation, as shown in fig. 7, when grid power 130 at the grid connection is de-energized, only the relays of the battery packs of one or more battery bays 110 are closed, and the one or more battery packs are supplied to the emergency power output port 180 via the charge-discharge machine 120 (discharge mode of the charge-discharge machine) to power the ups controller 140, the background monitoring device 170, the gateway 160, and the relays within the battery packs.
The above-mentioned variations are within the scope of the present invention, and the switching between the above-mentioned variations can be performed according to the actual state of the battery pack and the state of the solar panel.
In view of the above, the power supply system of the battery replacement station and the power supply method applied to the power supply system of the battery replacement station of the present invention can provide emergency power output by using a replaceable battery pack when the power supply of the power grid at the power grid connection end is powered off, and do not need a battery pack of an uninterruptible power supply system in the prior art, so that cost and system space can be effectively saved. In addition, the replaceable battery pack has large energy, and more stored energy is stored under the condition of the same weight or volume, and the replaceable battery pack is used for providing emergency power output when the power supply of the power grid at the power grid connecting end is powered off, so that the utilization rate of the battery pack is improved. Furthermore, the power supply system of the battery changing station provided by the invention can better monitor the battery parameters of the battery pack through the uninterruptible power supply controller and background monitoring, manage the charging and discharging of the battery, balance the battery, improve the consistency of the battery core, control the temperature of the battery, prolong the service life of the battery and improve the safety coefficient.
The basic concept and specific embodiments of the present invention have been described above. It should be noted that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims without affecting the essence of the present invention.
Claims (13)
1. A power supply system for a battery replacement station, comprising:
a power grid connection end;
a plurality of battery compartments, each for receiving a replaceable battery pack;
the charging and discharging machine is connected to the power grid connecting end, the charging and discharging machine is provided with a charging mode and a discharging mode, in the charging mode, the power grid connecting end provides a charging power supply for charging the battery pack in the battery bin through the charging and discharging machine, and in the discharging mode, the charging and discharging machine discharges the battery pack in the battery bin;
an emergency power output port connected to the charge and discharge machine;
the uninterruptible power supply controller is connected to the charge-discharge machine and monitors the power grid connecting end, when the power grid connecting end is not powered off, the charge-discharge machine is controlled to work in a charging mode, and when the power grid connecting end is powered off, the charge-discharge machine is controlled to work in a discharging mode so that the battery pack supplies power to the emergency power supply output port; and
the new energy power supply is connected to the charge and discharge machine and is monitored by the uninterruptible power supply controller;
when the power grid connecting end is not powered off, the charging and discharging machine works in a charging mode, the new energy power supply and the power grid connecting end provide the charging power supply together, when the new energy power supply is enough to provide the charging power supply, the new energy power supply feeds back electric energy to the power grid connecting end, and when the charging and discharging machine works in the charging mode, the uninterruptible power supply controller obtains battery parameters of battery packs in the battery positions according to the marks of the battery positions, so that the battery positions to be charged are determined;
when the power grid connection end is powered off, the new energy power supply supplies power to the emergency power supply output port, and when the new energy power supply is insufficient to supply power to the emergency power supply output port, the charge-discharge machine works in a discharge mode to enable the battery pack to supply power to the emergency power supply output port,
each battery bin corresponds to a gateway respectively and is connected to the uninterruptible power supply controller through the corresponding gateway, and the gateway provides the identifier for the corresponding battery bin;
the battery pack comprises a battery controller, the battery controller monitors the battery parameters of the battery pack, and each gateway is connected to the battery controller of the battery pack in the corresponding battery bin and sends the battery parameters to the uninterruptible power supply controller.
2. The charging station power supply system of claim 1,
when the power grid connecting end is not powered off, the power grid connecting end provides a system power supply of the power changing station power supply system;
and when the power grid connecting end is powered off, the emergency power supply output port provides a system power supply of the power supply system of the power conversion station.
3. The charging station power supply system as recited in claim 1, wherein the new energy power source comprises:
a solar power supply;
a wind energy power supply;
water energy.
4. The charging station power supply system of claim 1, wherein each battery pack includes a relay and is connected to the charging and discharging machine through a relay, the relay being a normally closed relay,
when the power grid connecting end is not powered off, the uninterruptible power supply controller controls the relay of the battery pack which is not required to be charged to be disconnected, and the charge and discharge machine only charges the battery pack which is required to be charged;
when the power grid connecting end is powered off, the relay of one or more battery packs is closed, and the one or more battery packs are discharged through the charge-discharge machine to supply power to the emergency power supply output port.
5. The charging station power supply system of claim 1,
each battery bin is connected to a corresponding gateway through a power supply line so that the charging and discharging machine supplies power to the gateway;
and the battery controller of each battery pack is connected to a corresponding gateway through a CAN bus so as to communicate with the gateway.
6. The power supply system of the power switching station as claimed in claim 5, wherein a system power supply of the power supply system of the power switching station is a power supply of an uninterruptible power supply controller, a relay and a gateway.
7. The power station changing power supply system as recited in claim 1, further comprising:
and the background monitoring device is connected to the uninterruptible power supply controller through a CAN bus and is used for real-time monitoring, data storage and construction of a battery information network of the power supply system of the power exchange station, and the background monitoring device and the uninterruptible power supply controller share a power supply.
8. The system as claimed in any one of claims 1 to 7, wherein the emergency power output port provides a high voltage power output and a low voltage power output, the high voltage power output provides power for a lighting device in the system, and the low voltage power output provides the system power of the system.
9. The power station supply system as recited in claim 1 wherein said uninterruptible power supply controller comprises:
the monitoring module is used for monitoring the power grid connection end; and
and the control module controls the charging and discharging machine to work in a charging mode when the monitoring module monitors that the power grid connecting end is not powered off, and controls the charging and discharging machine to work in a discharging mode when the monitoring module monitors that the power grid connecting end is powered off so that the battery pack supplies power to the emergency power supply output port.
10. The charging station power supply system as claimed in claim 9, wherein the charging station power supply system is a new energy power supply, and the monitoring module is further configured to monitor the new energy power supply.
11. The power station supply system of claim 9, wherein the uninterruptible power supply controller further comprises:
the receiving module is used for receiving the identification of the battery bin and the battery parameters of the battery pack;
the judging module is used for judging whether the battery bin corresponding to the battery pack is charged or discharged according to the battery parameters of the battery pack;
and the sending module is used for sending a signal for controlling whether the battery bin is charged and discharged to the battery bin according to the judgment result of the judging module.
12. A power supply method for a power switching station, which is applied to the power supply system of the power switching station as claimed in claim 1, the power supply method for the power switching station comprising:
the uninterruptible power supply controller monitors the power grid connection end;
when the power grid connecting end is not powered off, the uninterruptible power supply controller enables the charge-discharge machine to work in a charging mode, and the power grid connecting end supplies a charging power supply to the battery pack in the battery bin through the charge-discharge machine so as to charge the battery pack;
when the power grid connecting end is powered off, the uninterruptible power supply controller enables the charge-discharge machine to work in a discharge mode, the charge-discharge machine enables the battery pack in the battery bin to discharge so as to supply power to the emergency power supply output port,
the power supply system of the power changing station also comprises a new energy power supply which is connected to the charge and discharge machine and is monitored by the uninterruptible power supply controller,
when the power grid connection end is not powered off, the new energy power supply and the power grid connection end provide the charging power supply together, and when the new energy power supply is enough to provide the charging power supply, the new energy power supply feeds back electric energy to the power grid connection end;
when the power grid connecting end is powered off, the new energy power supply supplies power to the emergency power supply output port, and when the new energy power supply is not enough to supply power to the emergency power supply output port, the charge and discharge machine works in a discharge mode to enable the battery pack to supply power to the emergency power supply output port.
13. The method for supplying power to a power conversion station of claim 12,
when the power grid connection end is not powered off, the power grid connection end provides a system power supply;
and when the power grid connecting end is powered off, the emergency power supply output port provides system power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110511323.7A CN113067404B (en) | 2017-04-27 | 2017-04-27 | Power supply system and power supply method for power exchange station |
| CN201710285833.0A CN108808751B (en) | 2017-04-27 | 2017-04-27 | Power supply system and method for battery replacement station |
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| CN201710285833.0A CN108808751B (en) | 2017-04-27 | 2017-04-27 | Power supply system and method for battery replacement station |
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| CN202110511323.7A Division CN113067404B (en) | 2017-04-27 | 2017-04-27 | Power supply system and power supply method for power exchange station |
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| CN114801857A (en) * | 2018-12-14 | 2022-07-29 | 奥动新能源汽车科技有限公司 | Control method and system for working mode of battery replacement in battery replacement station |
| CN111555434B (en) * | 2020-04-26 | 2021-09-14 | 浙江吉智新能源汽车科技有限公司 | Model selection method and device for UPS system of power station replacement and storage medium |
| CN111969708B (en) * | 2020-07-20 | 2022-07-19 | 浙江吉智新能源汽车科技有限公司 | Battery replacement station protection system and protection method |
| CN114336802A (en) * | 2020-09-30 | 2022-04-12 | 蓝谷智慧(北京)能源科技有限公司 | Charging control method and system and battery replacement station |
| CN112406582A (en) * | 2020-11-12 | 2021-02-26 | 上海能辉科技股份有限公司 | Light storage, charging and replacement integrated heavy truck battery replacement container and charging method thereof |
| CN113370796B (en) * | 2021-05-18 | 2023-03-21 | 深圳万华数据科技有限公司 | Wireless scooter voltage regulation method, remote controller, scooter and storage medium |
| DE102022202163A1 (en) | 2022-03-03 | 2023-09-07 | Robert Bosch Gesellschaft mit beschränkter Haftung | Electrochemical energy storage system for operating a plurality of electrochemical energy storage devices in parallel |
| DE102022202164A1 (en) | 2022-03-03 | 2023-09-07 | Robert Bosch Gesellschaft mit beschränkter Haftung | Electrochemical energy storage system for operating a plurality of electrochemical energy storage devices in parallel |
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| CN108808751A (en) | 2018-11-13 |
| CN113067404B (en) | 2024-01-02 |
| CN113067404A (en) | 2021-07-02 |
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