CN113067404B - Power supply system and power supply method for power exchange station - Google Patents
Power supply system and power supply method for power exchange station Download PDFInfo
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- CN113067404B CN113067404B CN202110511323.7A CN202110511323A CN113067404B CN 113067404 B CN113067404 B CN 113067404B CN 202110511323 A CN202110511323 A CN 202110511323A CN 113067404 B CN113067404 B CN 113067404B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 81
- 238000012544 monitoring process Methods 0.000 claims description 22
- 238000012806 monitoring device Methods 0.000 claims description 15
- 238000010276 construction Methods 0.000 claims description 3
- 238000013500 data storage Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 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
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Classifications
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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
-
- 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 of a power exchange station, wherein the power supply system of the power exchange station comprises a power grid connecting end; a plurality of battery compartments, each battery compartment for receiving a battery pack for replacement; the charging and discharging machine is connected to the power grid connection end, in a charging mode, the power grid connection end provides a charging power supply for the battery pack in the battery bin through the charging and discharging machine so as to charge the battery pack, and in a 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 charging and discharging motor, monitors the power grid connecting end, controls the charging and discharging motor to work in a charging mode when the power grid connecting end is not powered off, and controls the charging and discharging motor 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. The power supply system of the power exchange station can adopt the battery pack to provide emergency power supply output when the power grid connection end is powered off, so that the cost and the space of the power exchange station are saved.
Description
Technical Field
The present invention relates to a power supply circuit device and a power supply system, and more particularly, to a power supply system of a power exchange station and a power supply method of the power exchange station.
Background
The electric automobile power exchange station generally needs an uninterruptible power supply system, and can be rapidly switched between a rectification state and an inversion state through devices such as a rectifier and an inverter, so that the normal operation of the system at the time of power failure is ensured.
Most of the existing uninterruptible power supply systems use maintenance-free lead-acid storage battery packs to supply power to the system of the power exchange station when power is off. The maintenance-free lead-acid storage battery has the problems of low specific energy, large volume and the like, and meanwhile, the service life of the maintenance-free lead-acid storage battery is greatly affected by temperature, charging, voltage and current conditions.
Therefore, the existing uninterruptible power supply system requires 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 exchange station and a power supply method of the power exchange station applied to the power supply system of the power exchange station so as to save cost and space of the power exchange station.
According to one aspect of the present invention, there is provided a power supply system of a power exchange station, comprising: a power grid connection end; a plurality of battery compartments, each battery compartment for receiving a battery pack for replacement; the charging and discharging machine is connected to the power grid connecting end and 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 the battery pack in the battery bin through the charging and discharging machine to charge, and in the discharging mode, the charging and discharging machine discharges the battery pack in the battery bin; an emergency power supply output port connected to the charge-discharge motor; the uninterruptible power supply controller is connected to the charging and discharging machine and monitors the power grid connection end, when the power grid connection end is not powered off, the charging and discharging machine is controlled to work in a charging mode, and when the charging and discharging machine is operated in the charging mode, the uninterruptible power supply controller obtains battery parameters of battery packs in the battery bin according to the identification of the battery bin, and further determines the battery bin to be charged; 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 identification 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.
In some embodiments of the invention, the uninterruptible power supply controller controls the charge and discharge motor to operate in a discharge mode to cause the battery pack to supply power to the emergency power output port when the grid connection is powered off.
In some embodiments of the present invention,
when the power grid connection end is not powered off, the power grid connection end provides a system power supply of a power supply system of the power exchange station;
when the power grid connection end is powered off, the emergency power supply output port provides a system power supply of the power supply system of the power exchange station.
In some embodiments of the invention, further comprising:
the new energy source power supply is connected to the charging and discharging motor 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 source power supply and the power grid connection end jointly provide the charging power supply, and when the new energy source power supply is enough to provide the charging power supply, the new energy source power supply feeds back electric energy to the power grid connection end,
when the power grid connection end is powered off, the new energy source power supply supplies power to the emergency power source output port, and when the new energy source power supply is insufficient to supply power to the emergency power source output port, the charging and discharging machine works in a discharging mode so that the battery pack supplies power to the emergency power source output port.
In some embodiments of the invention, the new energy power supply includes:
a solar power supply;
a wind energy power supply;
and (3) water energy.
In some embodiments of the invention, each of the battery packs includes a relay, and is connected to the charge and discharge machine by a relay, the relay being 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 charging and discharging machine only charges the battery pack which needs to be charged;
when the power grid connection 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 charging and discharging machine to supply power to the emergency power supply output port.
In some embodiments of the present invention, each of the battery bins is connected to a corresponding gateway through a power supply line to cause the charging and discharging motor to supply power to the gateway;
the battery controller of each battery pack is connected to a corresponding gateway through a CAN bus to communicate with the gateway.
In some embodiments of the present invention, the system power source of the power supply system of the power exchange station is a power source of an uninterruptible power supply controller, a relay and a gateway.
In some embodiments of the invention, further comprising:
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 battery information network construction 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.
In some embodiments of the invention, the emergency power supply output port provides a high voltage power supply output that powers a lighting device in a power-plant-power-plant system, and a low voltage power supply output that provides the system power for the power-plant-power-plant system.
In some embodiments of the invention, the uninterruptible power supply controller comprises:
the monitoring module is used for monitoring the power grid connection end; and
and the control module is used for controlling the charging and discharging motor 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 motor to work in a discharging mode when the monitoring module monitors that the power grid connecting end is powered off so as to enable the battery pack to supply power to the emergency power supply output port.
In some embodiments of the present invention, the power supply system of the power exchange station is a new energy power supply, and the monitoring module is further configured to monitor the new energy power supply.
In some embodiments of the invention, 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 or discharged to the battery bin according to the judging result of the judging module.
In some embodiments of the present invention, the power supply system of the power exchange station as described above is applied, and the power supply method of the power exchange station includes:
the uninterruptible power supply controller monitors the power grid connection end;
when the power grid connection end is not powered off, the uninterruptible power supply controller enables the charging and discharging machine to work in a charging mode, and the power grid connection end provides a charging power supply for the battery pack in the battery bin through the charging and discharging machine to charge.
In some embodiments of the invention, when the grid connection is powered down, the uninterruptible power supply controller causes the charge and discharge motor to operate in a discharge mode, the charge and discharge motor discharging the battery pack within the battery bay to power the emergency power supply output port.
In some embodiments of the invention, when the power grid connection is not powered off, the power grid connection provides system power;
when the power grid connection end is powered off, the emergency power supply output port provides a system power supply.
In some embodiments of the invention, the battery-powered system further comprises a new energy source connected to the charging and discharging machine and monitored by the uninterruptible power supply controller,
when the power grid connection end is not powered off, the new energy source power supply and the power grid connection end jointly provide the charging power supply, and when the new energy source power supply is enough to provide the charging power supply, the new energy source power supply feeds back electric energy to the power grid connection end;
when the power grid connection end is powered off, the new energy source power supply supplies power to the emergency power source output port, and when the new energy source power supply is insufficient to supply power to the emergency power source output port, the charging and discharging machine works in a discharging mode so that the battery pack supplies power to the emergency power source output port.
In view of this, the invention relates to a power supply system of a power exchange station and a power supply method of a power exchange station applied to the power supply system of the power exchange station, which can use a battery pack for replacement to provide emergency power output when the power grid connection end is powered off, without a storage battery pack of an uninterruptible power supply system in the prior art, and can effectively save cost and system space. In addition, the replaceable battery pack has large specific energy, and the energy stored under the condition of the same weight or volume is more, so that the replaceable battery pack is utilized to provide emergency power supply output when the power grid connection end is powered off, and the utilization rate of the battery pack is improved. Furthermore, the invention provides a battery parameter of the battery pack is better monitored through the uninterruptible power supply controller and the background monitoring, the charging and discharging of the battery are managed, the battery is balanced, the consistency of the battery core is improved, the temperature of the battery is controlled, the service life of the battery is prolonged, and the safety coefficient is improved.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a power supply system of a power exchange 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 present invention;
FIG. 3 is a schematic diagram of an uninterruptible power supply controller according to an embodiment of the invention;
FIG. 4 is a power flow chart of the embodiment of the invention in which the power grid connection terminal is not powered off;
FIG. 5 is a power flow chart of the power grid connection end outage in an embodiment of the present invention;
FIG. 6 is a schematic diagram of a power system of a power conversion station when a power connection end of a power grid is disconnected according to an embodiment of the present invention; and
fig. 7 is a schematic diagram of another power supply system of the power exchange station when the power connection end of the power grid is disconnected in an embodiment of the invention.
Reference numerals
110. Battery bin
111. Battery pack
112. Battery controller
113. Relay device
120. Charging and discharging machine
130. Power grid connection terminal
140. Uninterruptible power supply controller
150. Solar panel
160. Gateway (GW)
170. Background monitoring device
180. Emergency power supply output port
190. Twisted pair shielded wire
191. Power supply line
192 CAN bus
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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 the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof 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 give a thorough understanding of embodiments of the invention. It will be appreciated, however, by one skilled in the art that the inventive aspects may be practiced without one or more of the specific details, or with other methods, components, materials, etc. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the invention.
In order to solve the defects of the prior art, the invention provides a power supply system of a power exchange station and a power supply method of the power exchange station, which save cost and space of the power exchange station.
A specific embodiment of the power supply system of the power exchange station according to the present invention is described below with reference to fig. 1 and 2. In this embodiment, the power supply system of the power exchange station includes a plurality of battery bins 110, a charging and discharging machine 120, an uninterruptible power supply controller 140, an emergency power supply output port 180 and a power grid connection end 130 connected to a power grid.
Each battery compartment 110 houses an alternative battery pack 111. The battery pack 111 may be a power battery that is replaced with an electric vehicle. In other words, the electric vehicle moves to the battery replacement station, the power battery on the electric vehicle is replaced with the power battery in the battery compartment 110 of the battery replacement station, and the power battery replaced into the battery compartment 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 capacity, 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 charge/discharge machine 120 is used for charging and discharging the battery packs 111 in the battery compartments 110. The charge/discharge machine 120 has a charge mode and a discharge mode. In the charging mode, the power grid of the power grid connection 130 provides charging power to the battery pack 111 in the battery bay 110 for charging through the charging and discharging machine 120. In the discharge mode, the charge-discharge motor 120 discharges the battery pack 111 within the battery compartment 110. Specifically, the charge/discharge machine 120 can be switched between a rectifying mode (charging mode), an inverting mode (discharging mode), a rectifying mode, and an inverting mode in parallel. When the charging and discharging machine 120 is in the rectifying mode, the battery pack 111 in each battery compartment 110 stores energy. When the charge and discharge motor 120 is in the inversion mode, the battery pack 111 in each battery bay 110 is discharged.
The uninterruptible power supply controller 140 is connected to the charge/discharge machine 120. Uninterruptible power supply controller 140 monitors grid connection 130. When the power supply of the power grid connection terminal 130 is not powered off, the charge-discharge machine 120 is operated in a charge mode, and when the power supply of the power grid connection terminal 130 is powered off, the charge-discharge machine 120 is operated in a discharge mode. When the power supply of the power grid connection end 130 is not powered off, the uninterruptible power supply controller 140 obtains the battery parameters of the battery pack 111 in each battery bin 110 according to the identification of each battery bin 110, so as to determine the battery bin 110 to be charged. For example, the ups controller 140 may communicate with the battery controllers 112 within the battery packs 111 to obtain battery parameters of the battery packs 111 within the respective battery bins 110. If the battery parameter indicates that the battery pack 111 is not full, 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 opened, so that the charging/discharging machine 120 charges only the charging pack 111 in the battery compartment 110 that needs to be charged.
In this embodiment, each battery compartment 110 corresponds to a gateway 160. For example, battery bin 1 corresponds to gateway 1; the battery bin 2 corresponds to the gateway 2; battery bin N corresponds to gateway N. Each battery bay 110 is connected to uninterruptible power supply controller 140 through a corresponding gateway 160. Gateway 160 provides an identification to the corresponding battery bins 110 to distinguish between the different battery bins 110 (other ways of providing an identification to each battery bin 110 are also 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 compartment 110, and transmits the battery parameters monitored by the battery controller 112 to the uninterruptible power supply controller 130.
The grid connection 130 is connected to the charge and discharge machine 120, and in a charge mode of the charge and discharge machine 120, a grid power supply of the grid connection 130 provides a charging power supply of the battery pack 111 and provides a system power supply. The system power may refer to the power of uninterruptible power supply controller 140, gateway 160, relay 113, and the like. Further, the ups controller 140 is directly connected to the charging and discharging machine 120 for control interaction of national standard charging. When the grid power at grid connection 130 is de-energized, one or more battery packs 111 in each battery bay 110 supply power to emergency power output port 180.
The emergency power output port 180 is connected to the charge and discharge machine 120. The emergency power supply output port 180 includes a high voltage power supply output and a low voltage power supply output. The high voltage power output is used to power the lighting devices in the power-plant-power-system. 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 uninterruptible power supply controller 120, gateway 160, relay 113, and the like.
Specifically, in this embodiment, the power supply system of the power exchange station further includes a new energy source. Such as solar panel 150 shown in fig. 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 charging and discharging machine 120 and can be monitored by the uninterruptible power supply controller 140. When the grid power supply of the grid connection 130 is not powered off, the charging/discharging machine 120 operates in a charging mode, and the solar panel 150 and the grid power supply of the grid connection 130 together provide the charging power supply of the battery pack 111. When the solar panel 150 is sufficient to provide the charging power for the battery pack 111, the solar panel 150 feeds back power to the grid connection 130. When the power grid of the grid connection 130 is de-energized, the emergency power output port 180 is powered by the solar panel 150, and the solar panel 150 is insufficient to power the emergency power output port 180, the charging and discharging machine 120 operates in a discharging mode to cause the battery pack 111 to power the emergency power output port 180.
Specifically, in the present embodiment, the battery-powered system 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 battery information network construction of the power supply system of the power exchange station. Further, the background monitoring device 170 has the same power supply (system power) as the uninterruptible power supply controller 140. In other words, if the ups controller 140 is powered by the power source of the power grid connection 130, the background monitoring device 170 is also powered by the power source of the power grid connection 130; if the ups controller 140 is powered by the emergency power output port 180, then the background monitoring device 170 is also powered by 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, storage, and control.
Furthermore, the power supply system of the power exchange station provided by the invention adopts the CAN bus for deployment. 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/discharge machine 120 through power supply lines 191. Each battery compartment 110 is connected to the charge/discharge machine 120 via a power supply line 191. Each battery compartment 110 is also connected to a respective gateway 160 via a power supply line 191 so that gateway 160 may obtain power through charging and discharging motor 120. In addition, the uninterruptible power supply controller 140 is connected to the charge and discharge motor 120 through a CAN bus to perform communication. Each battery bay 110 (battery controller 112 of battery pack 111) is also connected to a respective gateway 160 for communication via a CAN bus. Each gateway 160 is connected to the ups controller 140 for communication via a CAN bus. The background monitoring device 170 is connected to the ups controller 140 through a CAN bus for communication. Twisted pair shielding wires 190 are also provided between the components connected through 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 configured to monitor the grid connection 130. In embodiments where the power-on-station system includes a new energy source 150, the monitoring module 141 is also configured to monitor the new energy source 150. The control module 142 is configured to control the charge-discharge machine 120 to operate in a charging mode when the monitoring module 141 monitors that the power grid connection 130 is not powered off, and to control the charge-discharge machine 120 to operate in a discharging mode when the monitoring module 141 monitors that the power grid connection 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 includes a receiving module 143, a determining module 144, and a transmitting module 145. The receiving module 143 is configured to receive an identification of a battery bin and a battery parameter of a battery pack. Specifically, the receiving module 143 communicates with the gateway 160 described above to obtain an identification of the battery bin, while obtaining the battery parameters of the battery pack through the battery controller of the battery pack. The judging module 144 is configured to judge whether the battery bin corresponding to the battery pack is charged or discharged according to the battery parameters 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 sending module 145 is configured to send a signal for controlling the opening and closing of the relay 113 of the battery compartment, thereby controlling whether the battery compartment is charged or discharged.
The invention provides a power supply method of a power exchange station, which adopts a power supply system of the power exchange station shown in figure 1. The power supply method of the power exchange station comprises the following steps: the uninterruptible power supply controller monitors the power grid connection end; when the power supply of the power grid connection end is not powered off, the charging and discharging machine works in a charging mode, and the power supply of the power grid connection end provides a charging power supply for a battery pack in a battery bin through the charging and discharging machine so as to charge; when the power supply of the power grid at the power grid connecting end is powered off, the charging and discharging motor works in a discharging mode, and the charging and discharging motor discharges the battery pack in the battery bin to supply power to the emergency power supply output port.
The following describes the power supply flow chart when the power supply of the power grid connection terminal is not powered off and the power supply of the power grid connection terminal is powered off by using fig. 4 and 5, respectively.
Fig. 4 is a power supply flow chart of the power grid at the power grid connection end without power outage in the embodiment of the invention. As shown in fig. 4, S210, the power supply of the power grid at the power grid connection end is not powered off, and the charging and discharging machine operates in a charging mode (rectifying mode).
The solar panel is preferably used for providing charging power for each battery bin. If the solar panel is sufficient for charging the battery pack to be charged, step S220 is performed, in which the solar panel is used to provide charging power to each battery bin, and the power grid at the power grid connection end provides system power to the uninterruptible power supply controller (as well as the gateway, the relay and the background monitoring device). In step S230, if the batteries are fully charged, the solar panel feeds back the electric energy to the grid power supply at the grid connection end.
When the energy absorbed by the solar panel is not enough for charging the battery pack to be charged, step S240 is performed to charge the battery pack by the power grid at the power grid connection end and provide the system power to the uninterruptible power supply controller (as well as the gateway, the relay and the background monitoring device).
Further, as described above, the battery pack to be charged is judged by the uninterruptible power supply controller. Specifically, the uninterruptible power supply controller obtains battery parameters of the battery packs in the corresponding battery bin through the gateway, and disconnects a relay of the battery pack full of electricity, so that the charging motor only charges one or more battery packs to be charged.
Referring next to fig. 5, fig. 5 is a power supply flow chart of power outage of the power grid at the power grid connection end according to an embodiment of the present invention.
First, S310, the power supply of the power grid at the power grid connection end is disconnected. Those skilled in the art will appreciate that the various steps shown in fig. 5 may also be employed when the grid power at the grid connection is abnormal.
In step S320, the solar panel supplies power to the emergency power output port.
In step S330, if the solar panel power is insufficient to supply power to the emergency power output port, the battery pack supplies power to the emergency power output port.
In a preferred embodiment, as shown in fig. 6, when the grid power supply 130 at the grid connection is powered down, the relays of the battery packs in each battery bay 110 are closed, and each battery pack supplies power to the emergency power output port 180 through the charge-discharge machine 120 (discharge mode of the charge-discharge machine) to power the uninterruptible power supply controller 140, the background monitoring device 170, the gateway 160, and the relays in the battery packs.
In one variation, as shown in fig. 7, when the grid power supply 130 at the grid connection is de-energized, only the relays of the battery packs of one or more battery bays 110, which supply power to the emergency power output port 180 via the charge and discharge machine 120 (discharge mode of the charge and discharge machine), are closed to power the uninterruptible power supply controller 140, the background monitoring 170, the gateway 160, and the relays within the battery packs.
The above-mentioned multiple variations are all within the protection scope of the present invention, and may be switched according to the actual battery pack state and the solar panel state, and the charging and discharging mechanisms of each battery pack provided by the present invention are not limited thereto, and are not repeated herein.
In view of this, the invention relates to a power supply system of a power exchange station and a power supply method of a power exchange station applied to the power supply system of the power exchange station, which can adopt a battery pack to be replaced to provide emergency power output when the power supply of a power grid at the power grid connection end is disconnected, without a storage battery pack of an uninterruptible power supply system in the prior art, and can effectively save cost and system space. In addition, the replaceable battery pack has large specific energy, and the energy stored under the condition of the same weight or volume is more, so that the replaceable battery pack is utilized to provide emergency power supply output when the power supply of the power supply connection end of the power grid is disconnected, and the utilization rate of the battery pack is improved. Furthermore, the invention provides a battery parameter of the battery pack is better monitored through the uninterruptible power supply controller and the background monitoring, the charging and discharging of the battery are managed, the battery is balanced, the consistency of the battery core is improved, the temperature of the battery is controlled, the service life of the battery is prolonged, and the safety coefficient is improved.
The foregoing has described the basic concepts and specific several embodiments of the invention. It is to be noted here that the present invention is not limited to the above-described specific embodiments, and that a person skilled in the art can make various variations or modifications within the scope of the claims, which do not affect the gist of the present invention.
Claims (15)
1. A power-plant-changing power supply system, characterized by comprising:
a power grid connection end;
a plurality of battery compartments, each battery compartment for receiving a battery pack for replacement;
the charging and discharging machine is connected to the power grid connecting end and 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 the battery pack in the battery bin through the charging and discharging machine to charge, and in the discharging mode, the charging and discharging machine discharges the battery pack in the battery bin;
an emergency power supply output port connected to the charge-discharge motor;
the uninterruptible power supply controller is connected to the charging and discharging machine and monitors the power grid connection end, when the power grid connection end is not powered off, the charging and discharging machine is controlled to work in a charging mode, and when the charging and discharging machine is operated in the charging mode, the uninterruptible power supply controller obtains battery parameters of battery packs in the battery bin according to the identification of the battery bin, and further determines the battery bin to be charged;
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 identification 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 battery exchange station power supply system according to claim 1, wherein the uninterruptible power supply controller controls the charge and discharge machine to operate in a discharge mode to cause the battery pack to supply power to the emergency power supply output port when the grid connection is de-energized.
3. A power supply system for a power exchange station as claimed in claim 1, wherein,
when the power grid connection end is not powered off, the power grid connection end provides a system power supply of a power supply system of the power exchange station;
when the power grid connection end is powered off, the emergency power supply output port provides a system power supply of the power supply system of the power exchange station.
4. A power-plant-changing system according to claim 3, further comprising:
the new energy source power supply is connected to the charging and discharging motor 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 source power supply and the power grid connection end jointly provide the charging power supply, and when the new energy source power supply is enough to provide the charging power supply, the new energy source power supply feeds back electric energy to the power grid connection end,
when the power grid connection end is powered off, the new energy source power supplies power to the emergency power source output port, and when the new energy source power is insufficient to supply power to the emergency power source output port, the charging and discharging machine works in a discharging mode so that the battery pack supplies power to the emergency power source output port;
each battery pack comprises a relay and is connected with the charging and discharging 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 charging and discharging machine only charges the battery pack which needs to be charged; when the power grid connection end is powered off, one or more relays of the battery packs are closed, and the battery packs are discharged through the charging and discharging machine to supply power to the emergency power supply output port;
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; the battery controller of each battery pack is connected to a corresponding gateway through a CAN bus to communicate with the gateway.
5. The battery power system of claim 4, wherein the new energy power source comprises:
a solar power supply;
a wind energy power supply;
and (3) water energy.
6. A power supply system for a power exchange station as set forth in claim 4, wherein, the system power supply of the power supply system of the power exchange station is the power supply of an uninterruptible power supply controller, a relay and a gateway.
7. The battery exchange station power supply system as set forth in claim 1, further comprising:
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 battery information network construction 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 power-plant power-supply system of any one of claims 1 to 7, wherein the emergency power supply output port provides a high-voltage power supply output that powers a lighting device in the power-plant power-supply system, and a low-voltage power supply output that provides a system power supply for the power-plant power-supply system.
9. The battery exchange station power supply system as set forth 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 is used for controlling the charging and discharging motor 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 motor to work in a discharging mode when the monitoring module monitors that the power grid connecting end is powered off so as to enable the battery pack to supply power to the emergency power supply output port.
10. The power-plant power-supply system of claim 9, wherein the power-plant power-supply system is a new energy source, and the monitoring module is further configured to monitor the new energy source.
11. The battery exchange station power supply system as set forth in 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 or discharged to the battery bin according to the judging result of the judging module.
12. A power-plant-power-supply method, characterized in that it is applied to a power-plant-power-supply system as claimed in claim 1, said power-plant-power-supply method comprising:
the uninterruptible power supply controller monitors the power grid connection end;
when the power grid connection end is not powered off, the uninterruptible power supply controller enables the charging and discharging machine to work in a charging mode, and the power grid connection end provides a charging power supply for the battery pack in the battery bin through the charging and discharging machine to charge.
13. A method of supplying power to a power plant as claimed in claim 12, wherein,
when the power grid connection end is powered off, the uninterruptible power supply controller enables the charging and discharging motor to work in a discharging mode, and the charging and discharging motor enables the battery pack in the battery bin to be discharged so as to supply power to the emergency power supply output port.
14. A method of supplying power to a power plant as claimed in claim 12, wherein,
when the power grid connection end is not powered off, a system power supply is provided by the power grid connection end;
when the power grid connection end is powered off, the emergency power supply output port provides a system power supply.
15. The power-plant power-supply method of claim 14, wherein said power-plant power-supply system further comprises a new-energy power source connected to said charge-discharge machine and monitored by said uninterruptible power-supply controller,
when the power grid connection end is not powered off, the new energy source power supply and the power grid connection end jointly provide the charging power supply, and when the new energy source power supply is enough to provide the charging power supply, the new energy source power supply feeds back electric energy to the power grid connection end;
when the power grid connection end is powered off, the new energy source power supply supplies power to the emergency power source output port, and when the new energy source power supply is insufficient to supply power to the emergency power source output port, the charging and discharging machine works in a discharging mode so that the battery pack supplies power to the emergency power source output port.
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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 |
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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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| CN111319509B (en) * | 2018-12-14 | 2022-03-22 | 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 |
| KR20230043423A (en) * | 2021-09-24 | 2023-03-31 | 주식회사 엘지에너지솔루션 | Battery Swapping Station with emergency power generation function |
| 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 |
| CN113067404A (en) | 2021-07-02 |
| CN108808751B (en) | 2021-06-01 |
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