Energy storage device, power management device, mobile terminal and method for operating the same

• US 10,170,916 B2
• Filed: 09/21/2016
• Issued: 01/01/2019
• Est. Priority Date: 08/17/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Seungyong, Park, Jaehyuk, Moon, Heesoo
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): Dhillon, Jagdeep
• Application Number:
  US15/271,287
• Publication Number:
  US 20170012441A1
• Time in Patent Office: 832 Days
• Field of Search: 307 26, 307 66, 307 64, 307 91, 307 101, 307 82, 320134, 320132, 320128, 320130, 34063619, 34063621, 324430, 324432, 701 22, 701 21, 701 20, 903903, 903930
• CPC Class Codes: G08B 21/18 Status alarms G08B21/02 takes precedence
• CPC Class Codes: H02J 1/10 Parallel operation of dc sources
• CPC Class Codes: H02J 13/00001 characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
• CPC Class Codes: H02J 13/00004 characterised by the power network being locally controlled
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00026 involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 2310/64 The condition being economic, e.g. tariff based load management
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y02D 30/70 in wireless communication networks
• CPC Class Codes: Y02E 10/56 : Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 40/70 : Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y02E 70/30 : Systems combining energy storage with energy generation of non-fossil origin
• CPC Class Codes: Y04S 10/123 : the energy generation units being or involving renewable energy sources
• CPC Class Codes: Y04S 10/40 : Display of information, e.g. of data or controls
• CPC Class Codes: Y04S 20/12 : Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
• CPC Class Codes: Y04S 20/242 : Home appliances
• CPC Class Codes: Y04S 40/121 : using the power network as support for the transmission
• CPC Class Codes: Y04S 40/124 : using wired telecommunication networks or data transmission busses
• CPC Class Codes: Y04S 40/126 : using wireless data transmission

Abstract

An energy storage device including at least one battery pack; a communication module configured to transmit power-on information or energy storage amount information to a power management device and to receive a charge command or discharge command from the power management device; a connector configured to receive alternating current (AC) power, supplied to an internal power network through a photovoltaic module, from the internal power network based on the charge command or to output AC power to the internal power network based on the discharge command; and a power converter configured to, when the charge command is received from the power management device, convert the AC power from the internal power network into direct current (DC) power based on the charge command, or, when the discharge command is received from the power management device, convert DC power stored in the at least one battery pack into AC power based on the discharge command.

Claims

1. An energy storage device comprising:

at least one battery pack;

a communication module connected to the at least one battery pack, and configured to transmit power-on information or energy storage amount information to a power management device and to receive a charge command or a discharge command from the power management device;

a connector configured to receive alternating current (AC) power, supplied to an internal power network through a photovoltaic module, from the internal power network based on the charge command or to output AC power to the internal power network based on the discharge command; and

a power converter disposed between the connector and the at least one battery pack, and configured to, when the charge command is received from the power management device, convert the AC power from the internal power network into direct current (DC) power based on the charge command, or, when the discharge command is received from the power management device, convert DC power stored in the at least one battery pack into AC power based on the discharge command,

wherein the communication module transmits a pairing request signal as the power-on information to the power management device when the energy storage device is powered on, and then receives a pairing response signal including information about a radio channel allocated by the power management device from the power management device, and performs wireless data communication with the power management device over a radio channel different from that of another energy storage device, and

wherein after paring completion, the communication module receives the charge command or the discharge command from the power management device, and transmits energy storage amount information of energy stored in the at least one battery pack to the power management device.

2. The energy storage device according to claim 1, wherein the communication module controls the at least one battery pack and the power converter.

3. The energy storage device according to claim 1, wherein the power converter comprises a bidirectional converter configured to convert the AC power from the internal power network into DC power or to convert the DC power stored in the at least one battery pack into AC power.

4. The energy storage device according to claim 1, wherein the power converter converts the DC power stored in the at least one battery pack into AC power when supply of commercial AC power to the internal power network is interrupted, and

wherein the connector outputs the converted AC power to the internal power network.

5. The energy storage device according to claim 1, further comprising a pluggable socket.

6. The energy storage device according to claim 5, wherein the socket is connected with a plug of another energy storage device to change a DC power storage capacity of the energy storage device.

7. The energy storage device according to claim 1, wherein the communication module receives the charge command or discharge command over a radio channel different from that of another energy storage device.

8. A mobile terminal comprising:

a display;

a wireless communication unit configured to exchange data with a power management device; and

a controller connected to the display and the wireless communication unit, and configured to, when a power monitoring mode for an internal power network is entered, perform a control operation to transmit a power monitoring request to the power management device, and, when monitored information for power information in the internal power network is received from the power management device, perform a control operation to display the monitored information on the display,

wherein when the power monitoring mode is entered, a power monitoring picture including a whole mode item and an individual mode item is displayed,

wherein when the whole mode item is selected, a whole mode picture including icons indicating energy storage amounts of a plurality of energy storage devices is displayed, and

wherein when the individual mode item is selected, an individual mode picture is displayed, and when a first energy storage device item of the individual mode picture is selected, an object indicating energy storage amount information of a first energy storage device is displayed.

9. A method for operating a mobile terminal, the method comprising:

entering a power monitoring mode for an internal power network;

transmitting a power monitoring request to a power management device in the power monitoring mode;

receiving monitored information for power information in the internal power network from the power management device; and

displaying the monitored information on a display,

wherein when the power monitoring mode is entered, a power monitoring picture including a whole mode item and an individual mode item is displayed,

wherein when the whole mode item is selected, a whole mode picture including icons indicating energy storage amounts of a plurality of energy storage devices is displayed, and

wherein when the individual mode item is selected, an individual mode picture is displayed, and when a first energy storage device item of the individual mode picture is selected, an object indicating energy storage amount information of a first energy storage device is displayed.