WO2017000103A1 - 控制电路、具有该控制电路的电池及电池控制方法 - Google Patents

控制电路、具有该控制电路的电池及电池控制方法 Download PDF

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Publication number
WO2017000103A1
WO2017000103A1 PCT/CN2015/082608 CN2015082608W WO2017000103A1 WO 2017000103 A1 WO2017000103 A1 WO 2017000103A1 CN 2015082608 W CN2015082608 W CN 2015082608W WO 2017000103 A1 WO2017000103 A1 WO 2017000103A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery cell
control unit
control circuit
electrically connected
Prior art date
Application number
PCT/CN2015/082608
Other languages
English (en)
French (fr)
Inventor
郑大阳
王雷
王文韬
詹军成
许柏皋
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN201711072206.5A priority Critical patent/CN107769317B/zh
Priority to PCT/CN2015/082608 priority patent/WO2017000103A1/zh
Priority to EP15896634.1A priority patent/EP3316383A4/en
Priority to CN201580001653.4A priority patent/CN105580242B/zh
Priority to JP2016543196A priority patent/JP6379203B2/ja
Publication of WO2017000103A1 publication Critical patent/WO2017000103A1/zh
Priority to US15/858,743 priority patent/US11139511B2/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a control circuit, a battery having the same, and a battery control method.
  • batteries on the market usually add control circuits to the cells to achieve various circuit functions such as minimum voltage limit on the battery, maximum voltage limit, temperature and current detection.
  • the control circuit is still in operation.
  • the control unit in the control circuit needs to periodically monitor the state information of the battery cell and store the state information in a register.
  • the control circuit still generates corresponding power consumption. At this point, the battery is still in a power state.
  • the currently common solution is that when the battery is in a power-off state, the control unit detects a cell voltage, and when the cell voltage is lower than a preset value, sends a corresponding control command to cause the The battery enters a low power state.
  • the cell still needs to provide a corresponding power source to maintain the register state inside the battery. That is, the battery cannot completely cut off the power of the control circuit, and thus the power consumption cannot be completely eliminated.
  • a control circuit for controlling a battery cell comprising:
  • the power input end is configured to be electrically connected to the battery cell to provide power to the control circuit;
  • ferroelectric memory having a dynamic mode and a non-disappearing mode
  • control unit electrically connected to the ferroelectric memory, the control unit is configured to acquire state information of the battery cell, and store the state information into the ferroelectric memory;
  • control circuit switches the ferroelectric memory to the dynamic mode or the non-disappearing mode by turning on or off an electrical connection between the power input terminal and the battery cell.
  • control unit is a field programmable gate array, and a micro control chip or a single chip microcomputer with a control program embedded therein.
  • the status information includes at least one of a capacity of the battery cell, a voltage of the battery cell, a current of the battery cell, and a battery temperature of the battery cell.
  • control circuit further includes a switch unit, the power input end is electrically connected to the battery cell through the switch unit, and the control unit is turned on or off by turning on or off the switch unit The electrical connection between the power input end and the battery cell is opened.
  • the switching unit is a metal oxide semiconductor field effect transistor, a relay or a mechanical switch.
  • control circuit further includes a trigger button, and the trigger button is used to control the power supply or power off of the battery.
  • control unit stores the state information to the ferroelectric memory; when the cell switch is controlled by the trigger button The control unit acquires the status information from the ferroelectric memory up to a power supply state.
  • the trigger button is electrically connected to the control unit, the trigger button is configured to send a trigger signal to the control unit, and the control unit controls the power input terminal and the power according to the trigger signal.
  • the core is switched on and off.
  • the trigger button is electrically connected to the battery cell, and when the trigger button is triggered, the battery cell supplies power to the control unit briefly through the trigger button.
  • control circuit further includes a button power supply, and the trigger button is electrically connected to the button power source, and when the trigger button is triggered, the button power source supplies power to the control unit briefly through the trigger button.
  • control circuit further includes a sensing circuit and a charging and discharging connection end, wherein the charging and discharging connection end is electrically connected to the battery cell through the sensing circuit, and the sensing circuit is electrically connected to the control unit
  • the sensing circuit is configured to sense whether the charging and discharging connection end is electrically connected to an external device; and when the sensing circuit senses that the charging and discharging connection end is electrically connected to an external device, the control unit is turned on.
  • the power input end is electrically connected to the battery core, and when the sensing circuit senses that the charging and discharging connection end is electrically disconnected from an external device, the control unit disconnects the power input end from the The electrical connection of the cells.
  • control circuit further includes a charge and discharge protection circuit and a charge and discharge connection terminal, the charge and discharge protection circuit is electrically connected to the control unit and the battery core, and the battery core is performed by the charge and discharge protection circuit Charging or externally supplying power, the charging and discharging connection end is electrically connected to the charging and discharging protection circuit for electrically connecting with an external device.
  • the charge and discharge protection circuit has a switching function, and the control unit controls energization and de-energization of the battery cell and the external device by the charge and discharge protection circuit.
  • control circuit further includes a power supply switch electrically connected between the charge and discharge protection circuit and the battery core, and is electrically connected to the control unit, and the control unit passes the power supply
  • the switch controls energization and de-energization of the battery cell and an external device.
  • control circuit further includes a charge and discharge protection circuit and a charge and discharge connection terminal, the charge and discharge protection circuit is electrically connected to the control unit and the battery core, and the battery core is performed by the charge and discharge protection circuit Charging or externally supplying power, the charging and discharging connection end is electrically connected to the charging and discharging protection circuit for electrically connecting with an external device.
  • the charge and discharge protection circuit is electrically connected to the battery cell through the switch unit, and the control unit controls power supply and power-off of the battery cell and the external device through the switch unit.
  • control circuit further includes a signal interface electrically connected to the control unit, and the control circuit is electrically connected to the external device through the signal interface, thereby performing data communication with the external device.
  • a battery includes a battery core and a control circuit for controlling the battery core, the control circuit comprising:
  • the power input end is configured to be electrically connected to the battery cell to provide power to the control circuit;
  • ferroelectric memory having a dynamic mode and a non-disappearing mode
  • control unit electrically connected to the ferroelectric memory, the control unit is configured to acquire state information of the battery cell, and store the state information into the ferroelectric memory;
  • control circuit switches the ferroelectric memory to the dynamic mode or the non-disappearing mode by turning on or off an electrical connection between the power input terminal and the battery cell.
  • the battery further includes a housing, and the battery core and the control circuit are disposed in the housing.
  • control unit is a field programmable gate array, and a micro control chip or a single chip microcomputer with a control program embedded therein.
  • the status information includes at least one of a capacity of the battery cell, a voltage of the battery cell, a current of the battery cell, and a battery temperature of the battery cell.
  • control circuit further includes a switch unit, the power input end is electrically connected to the battery cell through the switch unit, and the control unit is turned on or off by turning on or off the switch unit The electrical connection between the power input end and the battery cell is opened.
  • the switching unit is a metal oxide semiconductor field effect transistor, a relay or a mechanical switch.
  • control circuit further includes a trigger button, and the trigger button is used to control the power supply or power off of the battery.
  • control unit stores the state information to the ferroelectric memory; when the cell switch is controlled by the trigger button The control unit acquires the status information from the ferroelectric memory up to a power supply state.
  • the trigger button is electrically connected to the control unit, the trigger button is configured to send a trigger signal to the control unit, and the control unit controls the power input terminal and the power according to the trigger signal.
  • the core is switched on and off.
  • the trigger button is electrically connected to the battery cell, and when the trigger button is triggered, the battery cell supplies power to the control unit briefly through the trigger button.
  • control circuit further includes a button power supply, and the trigger button is electrically connected to the button power source, and when the trigger button is triggered, the button power source supplies power to the control unit briefly through the trigger button.
  • control circuit further includes a sensing circuit and a charging and discharging connection end, wherein the charging and discharging connection end is electrically connected to the battery cell through the sensing circuit, and the sensing circuit is electrically connected to the control unit
  • the sensing circuit is configured to sense whether the charging and discharging connection end is electrically connected to an external device; and when the sensing circuit senses that the charging and discharging connection end is electrically connected to an external device, the control unit is turned on.
  • the power input end is electrically connected to the battery core, and when the sensing circuit senses that the charging and discharging connection end is electrically disconnected from an external device, the control unit disconnects the power input end from the The electrical connection of the cells.
  • control circuit further includes a charge and discharge protection circuit and a charge and discharge connection terminal, the charge and discharge protection circuit is electrically connected to the control unit and the battery core, and the battery core is performed by the charge and discharge protection circuit Charging or externally supplying power, the charging and discharging connection end is electrically connected to the charging and discharging protection circuit for electrically connecting with an external device.
  • the charge and discharge protection circuit has a switching function, and the control unit controls energization and de-energization of the battery cell and the external device by the charge and discharge protection circuit.
  • control circuit further includes a power supply switch electrically connected between the charge and discharge protection circuit and the battery core, and is electrically connected to the control unit, and the control unit passes the power supply
  • the switch controls energization and de-energization of the battery cell and an external device.
  • control circuit further includes a charge and discharge protection circuit and a charge and discharge connection terminal, the charge and discharge protection circuit is electrically connected to the control unit and the battery core, and the battery core is performed by the charge and discharge protection circuit Charging or externally supplying power, the charging and discharging connection end is electrically connected to the charging and discharging protection circuit for electrically connecting with an external device.
  • the charge and discharge protection circuit is electrically connected to the battery cell through the switch unit, and the control unit controls power supply and power-off of the battery cell and the external device through the switch unit.
  • control circuit further includes a signal interface electrically connected to the control unit, and the control circuit is electrically connected to the external device through the signal interface, thereby performing data communication with the external device.
  • a battery control method the battery comprising a battery core and a ferroelectric memory, the ferroelectric memory having a dynamic mode and a non-disappearing mode, the method comprising:
  • the status information includes at least one of a capacity of the battery cell, a voltage of the battery cell, a current of the battery cell, and a battery temperature of the battery cell.
  • the battery further includes a switch unit that turns on or off the electrical connection between the ferroelectric memory and the battery cell by turning on or off the switch unit.
  • the state information is stored to the ferroelectric memory; when the cell is switched to the power supply state, the state is acquired from the ferroelectric memory information.
  • the on/off between the ferroelectric memory and the battery cell is controlled according to the trigger signal.
  • the battery when receiving a trigger signal, the battery is controlled to supply power to the ferroelectric memory.
  • the battery further includes a button power supply, and when receiving a trigger signal, controlling the button power supply to supply power to the ferroelectric memory.
  • control circuit further includes a charge and discharge connection end, and the on/off between the ferroelectric memory and the battery cell is controlled according to the on/off of the charge and discharge connection end and the external device.
  • the battery can effectively cut off the power of the control circuit to reduce the power consumption of the control circuit to zero, without worrying about the over-discharge of the battery, and effectively prolonging the storage time of the battery.
  • the ferroelectric memory is also provided because the control circuit is also provided. Therefore, even when the battery cell is in a power-off state, the ferroelectric memory can effectively save data and prevent information loss. That is, the above control circuit and the battery having the control circuit can effectively reduce power consumption, and can effectively save data and prevent information loss.
  • FIG. 1 is a schematic structural view of a battery according to an embodiment of the present invention.
  • FIG. 2 is a functional block diagram of one of the batteries shown in FIG. 1.
  • FIG. 3 is another functional block diagram of the battery shown in FIG. 1.
  • FIG. 3 is another functional block diagram of the battery shown in FIG. 1.
  • FIG. 4 is a schematic flow chart of a battery control method according to an embodiment of the present invention.
  • an element when referred to as being “electrically connected” to another element, it can be directly on the other element or the element can be present.
  • an element when it is considered to be “electrically connected” to another element, it can be a contact connection, for example, either a wire connection or a non-contact connection, for example, a non-contact coupling.
  • a preferred embodiment of the present invention provides a battery 100 including a housing 11 , a battery core 13 , and a control circuit 17 .
  • the battery core 13 and the control circuit 17 are both disposed in the housing 11.
  • the control circuit 17 is provided with a switch unit 171 , and the switch unit 171 is electrically connected to the battery core 13 .
  • the battery 100 establishes an electrical connection or a disconnection between the battery core 13 and the control circuit 17 by controlling the conduction and disconnection of the switch unit 171, thereby causing the battery core 13 to pass the switch.
  • the unit 171 supplies power to the control circuit 17 or cuts off power to the control circuit 17.
  • the switching unit 171 may be a Metal Oxide Semiconductor Field Effect Transistor (MOS), or other electronic switches such as relays and mechanical switches.
  • MOS Metal Oxide Semiconductor Field Effect Transistor
  • the switch unit 171 is a MOS transistor.
  • the control circuit 17 may include one or more circuit boards or, in one or more microprocessors. Referring to FIG. 2 together, the control circuit 17 further includes a power input terminal 172, a control unit 173, a Ferromagnetic Random Access Memory (FRAM) 174, and a trigger button S. The control unit 173 and the ferroelectric memory FRAM 174 are both electrically coupled to the power input 172.
  • FRAM Ferromagnetic Random Access Memory
  • the power input terminal 172 is electrically connected to the positive and negative poles of the battery core 13 through the switch unit 171 to receive the power output by the battery core 13 and further serve as a power source of the control circuit 17,
  • the control unit 173 and the operation of the FRAM 174 are powered.
  • the control unit 173 may be a Field-Programmable Gate Array (FPGA), a Micro-Controller Unit (MCU) or a microcontroller embedded with a control program. In this embodiment, the control unit 173 is an MCU.
  • FPGA Field-Programmable Gate Array
  • MCU Micro-Controller Unit
  • the control unit 173 is an MCU.
  • the FRAM 174 is electrically connected to the control unit 173 for storing state information of the battery and battery information such as a battery model, a battery chemistry, a battery production date, a battery number, and a battery manufacturer.
  • the state information of the battery cell 13 includes at least parameters such as the current capacity of the battery cell 13, the current voltage of the battery cell 13, the current current of the battery cell 13, the current battery temperature of the battery cell 13, and the like.
  • the FRAM 174 has the advantages of fast read/write speed and non-volatility. It can quickly save the current state when the battery is turned off, and quickly restore the state before the last power-off at power-on.
  • the FRAM 174 can be switched between a dynamic mode and a non-disappearing mode.
  • the FRAM 174 obtains a high dielectric constant due to a special memory structure, and thus can be used as a general dynamic random access memory (DRAM).
  • DRAM general dynamic random access memory
  • the FRAM 174 is in a stable state due to polarization, so that it can effectively save data without a power source. That is, even if the switching unit 171 is turned off to cause the battery cell 13 to stop supplying power to the control circuit 17, the FRAM 174 can still operate effectively with characteristics that do not disappear.
  • the switching unit 171 between the battery cell 13 and the control circuit 17 is turned on, so that the battery core 13 is electrically connected to the control circuit 17, the battery core 13 is provided for the control circuit 17.
  • the power supply at this time, the FRAM 174 operates in a dynamic mode.
  • the control unit 173 can perform a read/write operation on the FRAM 174, for example, storing state information of the battery cell 13 to the FRAM 174.
  • the switch unit 171 between the battery cell 13 and the control circuit 17 is disconnected, so that the battery cell 13 is disconnected from the control circuit 17, the battery cell 13 is stopped as the control circuit 17. Power is supplied, and the FRAM 174 is switched to the non-disappearing mode. At this time, the FRAM 174 can still effectively save the data stored by the control unit 173 to the FRAM 174 to prevent data loss.
  • the trigger button S is used to control the power supply or power off of the battery core 13. For example, when the battery cell 13 is in a power supply state, that is, when the power is being externally supplied, if the user presses the trigger button S, the battery cell 13 is switched to the power-off state. When the battery core 13 is in a power-off state, that is, when the external power supply is stopped, if the user presses the trigger button S again, the battery core 13 will be switched to the power supply state, that is, the external power supply is restored. Further, the trigger button S is electrically connected to the control unit 173. The trigger button S is configured to send a trigger signal to the control unit 173, and the control unit 173 controls the on/off of the switch unit 171 according to the trigger signal.
  • the control circuit 17 further includes a button power supply Vcc.
  • the trigger button S is electrically connected to the button power source Vcc.
  • the button power source Vcc supplies power to the control unit 173 through the trigger button S for a short time.
  • the control unit 173 stores the current state information to the FRAM 174, and controls the switch unit 171 to be disconnected, thereby causing the battery core 13 to be electrically disconnected from the control circuit 17, That is, the battery core 13 cuts off the power of the control circuit 17, so that the power consumption of the control circuit 17 is zero, thereby effectively extending the storage life of the battery 100.
  • the button power source Vcc supplies power to the control unit 173 through the trigger button S for a short time.
  • the control unit 173 controls the switching unit 171 to be turned on, thereby establishing an electrical connection between the battery cell 13 and the control circuit 17, so that the battery cell 13 continues to supply power to the control circuit 17.
  • the FRAM 174 will switch to the dynamic mode again to facilitate the control unit 173 to perform a read/write operation on the FRAM 174. That is, the control circuit 17 can resume normal operation and continue to operate in the state of the last shutdown.
  • the button power supply Vcc can also be omitted, and the trigger button S is directly electrically connected to the battery core 13. At this time, when the trigger button S is triggered, the battery cell 13 can directly supply power to the control unit 173 through the trigger button S.
  • control circuit 17 further includes a charge and discharge protection circuit 175 and a charge and discharge connection end 176.
  • the charge and discharge protection circuit 175 is electrically connected to the control unit 173.
  • the battery cell 13 can be charged or externally supplied by the charge and discharge protection circuit 175.
  • the charging and discharging connection end 176 is electrically connected to the charging and discharging protection circuit 175 for electrically connecting with an external device (not shown) to provide a charging and discharging interface of the battery 100.
  • an external device not shown
  • the external device can charge the battery 100 through the charge and discharge connection end 176.
  • control circuit 17 further includes a power supply switch SW.
  • the power supply switch SW is electrically connected between the charge and discharge protection circuit 175 and the battery core 13 and is electrically connected to the control unit 173.
  • the control unit 173 controls the energization and de-energization of the battery cell 13 and the charge and discharge protection circuit 175 through the power supply switch SW, and further controls the energization of the battery cell 13 and the external device through the charge and discharge protection circuit 175. Power off.
  • control circuit 17 may not provide a separate power supply switch SW, but may cause the charge and discharge protection circuit 175 to be electrically connected to the battery cell 13 through the switch unit 171.
  • control unit 173 controls the energization and de-energization of the battery cell 13 and the charge and discharge protection circuit 175 by the switch unit 171, and further controls the battery core 13 and the external device through the charge and discharge protection circuit 175. Power on and off.
  • the charge and discharge protection circuit 175 when the charge and discharge protection circuit 175 itself has a switching function, the charge and discharge protection circuit 175 can directly electrically connect the control unit 173 and the battery core 13.
  • control unit 173 can control the energization and de-energization of the battery cell 13 and the charge and discharge protection circuit 175 through the switch of the charge and discharge protection circuit 175 itself, and then control the battery through the charge and discharge protection circuit 175.
  • the energization and de-energization of the battery 13 and the external device are described.
  • control circuit 17 further includes a signal interface 178 electrically connected to the control unit 173 for establishing electrical connection between the control circuit 17 and other external devices, for example, an unmanned aerial vehicle.
  • the external device can be in data communication with the control circuit 17.
  • the control circuit 17 operates normally when the battery core 13 is in a power supply state.
  • the FRAM 174 in the control circuit 17 operates in a dynamic mode, and the control unit 173 can acquire state information of the battery cell 13 in a timed or real time, and write the acquired state information into the FRAM 174.
  • the battery cell 13 is switched to the power-off state.
  • the battery core 13 or the button power supply Vcc temporarily supplies power to the control unit 173 through the trigger button S, and the control unit 173 acquires state information of the battery core 13 and the status information. Stored to the FRAM 174.
  • the control unit 173 turns off the switching unit 171, thereby causing the battery cell 13 to be electrically disconnected from the control circuit 17, that is, the battery cell 13 cuts off the power of the control circuit 17.
  • the control circuit 17 stops operating to make its power consumption zero, thereby effectively extending the storage life of the battery 100.
  • the FRAM 174 switches to the non-disappearing mode, so even if the battery cell 13 is disconnected from the control circuit 17, the FRAM 174 remains The state information of the battery cell 13 can be effectively stored, thereby preventing data loss.
  • control unit 173 is a mechanical switch
  • the battery cell 13 is switched to the power-off state
  • the FRAM 174 stores state information before the battery core 13 is powered off.
  • the battery cell 13 When the battery cell 13 is in the power-off state and the user presses the trigger button S again, the battery cell 13 is switched to the power supply state. At this time, the battery unit 13 or the button power supply Vcc temporarily supplies power to the control unit 173 through the trigger button S, and the control unit 173 controls the switch unit 171 to be turned on, thereby establishing the battery core 13 Electrical connection to the control circuit 17 causes the cell 13 to continue to supply power to the control circuit 17. At the same time, the FRAM 174 will switch to the dynamic mode again to facilitate the control unit 173 to perform a read/write operation on the FRAM 174. As such, the control circuit 17 can continue to operate in the state it was in when it was last turned off.
  • the control circuit 17 includes a sensing circuit 179.
  • the charge and discharge connection end 176 is electrically connected to the battery cell 13 through the sensing circuit 179.
  • the sensing circuit 178 is also electrically connected to the control unit 173 for sensing whether the charging and discharging connection end 176 is electrically connected to an external device.
  • the control unit 173 controls the switching unit 171 to be turned on.
  • the control unit 173 controls the switching unit 171 to be turned off.
  • FIG. 4 is a schematic flowchart of a battery control method according to an embodiment of the present invention.
  • the method in the embodiment of the present invention may be implemented by using a control unit. Specifically, the method includes:
  • S101 Acquire status information of the battery core 13 and store the status information to the FRAM 174.
  • the status information includes at least one of the following: a capacity of the battery cell 13, a voltage of the battery cell 13, a current of the battery cell 13, and a battery temperature of the battery cell 13.
  • S102 Control power-on or power-off between the battery cell 13 and the FRAM 174, and switch the FRAM 174 to the dynamic mode or the non-disappear mode to update or read the status information.
  • the battery 100 further includes a switch unit 171.
  • the switch unit 171 electrically connects the battery cell 13 and the FRAM 174.
  • the control unit 173 turns on or off the switch unit 171 to turn on or off the electrical connection between the FRAM 174 and the battery cell 13.
  • the control unit 173 stores the status information to the FRAM 174 when the battery cell 13 is switched to the power down state.
  • the control unit 173 may acquire the status information from the FRAM 174 when the battery cell 13 is switched to a power supply state.
  • the battery 100 further includes a trigger button S.
  • the trigger button S is used to control the power supply or power-off of the battery core 13. For example, when the battery cell 13 is in a power supply state, that is, when the power is being externally supplied, if the user presses the trigger button S, the battery cell 13 is switched to the power-off state. When the battery core 13 is in a power-off state, that is, when the external power supply is stopped, if the user presses the trigger button S again, the battery core 13 will be switched to the power supply state, that is, the external power supply is restored.
  • the trigger button S is electrically connected to the control unit 173.
  • the trigger button S is configured to send a trigger signal to the control unit 173, and the control unit 173 controls the on/off of the switch unit 171 according to the trigger signal.
  • the trigger button S can be electrically connected to the battery core 13. Therefore, when the trigger button S is triggered, the battery cell 13 can directly supply power to the control unit 173 directly through the trigger button S.
  • the battery 100 further includes a button power source Vcc, and the button power source Vcc is electrically connected to the trigger button S.
  • the button power supply Vcc supplies power to the control unit 173 briefly through the trigger button S.
  • control circuit 17 further includes a charge and discharge connection end 176, and the control unit 173 can control the FRAM 174 and the battery core 13 according to the on/off of the charge and discharge connection end 176 and an external device. On and off.
  • the battery 100 can cut off the power consumption of the control circuit 17 to reduce the power consumption of the control circuit 17 to zero, without worrying about the over-discharge of the battery cell 13, thereby effectively extending the storage time of the battery 100.
  • the FRAM 174 is provided because the control circuit 17 is provided. Therefore, even when the battery cell 13 is in the power-off state, the FRAM 174 can effectively save data and prevent information loss. That is to say, the control circuit 17 and the battery 100 having the control circuit 17 can effectively reduce power consumption, and can effectively save data and prevent information loss.

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Abstract

一种用于控制电芯(13)的控制电路(17)，包括：电源输入端(172)，所述电源输入端(172)用以电连接至所述电芯(13)，以为所述控制电路(17)提供电源；铁电存储器(174)，所述铁电存储器(174)具有动态模式和不消失模式；以及控制单元(173)，与所述铁电存储器(174)电连接，所述控制单元(173)用以获取所述电芯(13)的状态信息，并将所述状态信息存储至所述铁电存储器(174)；其中，所述控制电路(17)通过导通或断开所述电源输入端(172)与所述电芯(13)的电连接，以将所述铁电存储器(174)切换至所述动态模式或不消失模式。上述控制电路(17)既能有效降低功耗，还能有效保存数据，防止信息丢失。还提供一种具有该控制电路(17)的电池及电池控制方法。

Description

控制电路、具有该控制电路的电池及电池控制方法 技术领域
本发明涉及一种控制电路、具有该控制电路的电池及电池控制方法。
背景技术
目前市面上的电池通常会在电芯上添加控制电路，用以实现对电芯的放电最低电压限制、充电最高电压限制、温度和电流检测等多种电路功能。然而，当电芯不对外供电时，所述控制电路仍处于工作状态。例如，所述控制电路中的控制单元需要定时监控电芯的状态信息，并将所述状态信息存储至寄存器，当所述电芯不对外供电时，该控制电路仍会产生相应的功耗，此时，电池仍然处于耗电状态。
目前常用的解决方案为当所述电池处于断电状态时，所述控制单元检测电芯电压，并当所述电芯电压低于一预设值时，发送相应的控制指令，以使得所述电池进入低功耗状态。然而，即使所述电池进入低功耗状态，所述电芯仍需提供相应的电源，以维持所述电池内部的寄存器状态。即，所述电芯无法完全切断所述控制电路的电源，因此无法完全杜绝电量损耗。
发明内容
鉴于以上内容，有必要提供一种可有效杜绝电量损耗的电池以及其控制电路、及电池控制方法。
一种用于控制电芯的控制电路，包括：
电源输入端，所述电源输入端用以电连接至所述电芯，以为所述控制电路提供电源；
铁电存储器，所述铁电存储器具有动态模式和不消失模式；以及
控制单元，与所述铁电存储器电连接，所述控制单元用以获取所述电芯的状态信息，并将所述状态信息存储至所述铁电存储器；
其中，所述控制电路通过导通或断开所述电源输入端与所述电芯的电连接，以将所述铁电存储器切换至所述动态模式或不消失模式。
进一步地，所述控制单元为现场可编程门阵列，内嵌有控制程序的微控制芯片或者单片机。
进一步地，所述状态信息包括如下至少一种：所述电芯的容量，所述电芯的电压，所述电芯的电流，所述电芯的电池温度。
进一步地，所述控制电路还包括开关单元，所述电源输入端通过所述开关单元电连接至所述电芯，所述控制单元通过导通或断开所述开关单元，进而导通或断开所述电源输入端与所述电芯的电连接。
进一步地，所述开关单元为金属氧化物半导体场效应晶体管、继电器或者机械开关。
进一步地，所述控制电路还包括触发按键，所述触发按键用以控制所述电芯供电或断电。
进一步地，当通过所述触发按键控制所述电芯换至断电状态时，所述控制单元将所述状态信息存储至所述铁电存储器；当通过所述触发按键控制所述电芯切换至供电状态时，所述控制单元从所述铁电存储器内获取所述状态信息。
进一步地，所述触发按键与所述控制单元电连接，所述触发按键用以发送一触发信号给所述控制单元，所述控制单元根据所述触发信号控制所述电源输入端与所述电芯的通断。
进一步地，所述触发按键与所述电芯电连接，当所述触发按键被触发时，所述电芯通过所述触发按键给所述控制单元短暂供电。
进一步地，所述控制电路还包括按键电源，所述触发按键与所述按键电源电连接，当所述触发按键被触发时，所述按键电源通过所述触发按键给所述控制单元短暂供电。
进一步地，所述控制电路还包括感测电路及充放电连接端，所述充放电连接端通过所述感测电路与所述电芯电连接，所述感测电路与所述控制单元电连接，所述感测电路用于感测所述充放电连接端是否与外部装置电导通；当所述感测电路感测所述充放电连接端与外部装置电导通时，所述控制单元导通所述电源输入端与所述电芯的电连接，当所述感测电路感测所述充放电连接端与外部装置电断开时，所述控制单元断开所述电源输入端与所述电芯的电连接。
进一步地，所述控制电路还包括充放电保护电路及充放电连接端，所述充放电保护电路电连接至所述控制单元及所述电芯，所述电芯通过所述充放电保护电路进行充电或对外供电，所述充放电连接端电连接至所述充放电保护电路，用以与外部装置电连接。
进一步地，所述充放电保护电路具有开关功能，所述控制单元通过所述充放电保护电路控制所述电芯与外部装置的通电与断电。
进一步地，所述控制电路还包括供电开关，所述供电开关电连接于所述充放电保护电路与所述电芯之间，并且与所述控制单元电连接，所述控制单元通过所述供电开关控制所述电芯与外部装置的通电与断电。
进一步地，所述控制电路还包括充放电保护电路及充放电连接端，所述充放电保护电路电连接至所述控制单元及所述电芯，所述电芯通过所述充放电保护电路进行充电或对外供电，所述充放电连接端电连接至所述充放电保护电路，用以与外部装置电连接。
进一步地，所述充放电保护电路通过所述开关单元与所述电芯电连接，所述控制单元通过所述开关单元控制所述电芯与所述外部装置的通电与断电。
进一步地，所述控制电路还包括信号接口，所述信号接口电连接至所述控制单元，所述控制电路通过所述信号接口电连接至外部设备，进而与外部设备进行数据通信。
一种电池，包括电芯以及用于控制电芯的控制电路，所述控制电路包括：
电源输入端，所述电源输入端用以电连接至所述电芯，以为所述控制电路提供电源；
铁电存储器，所述铁电存储器具有动态模式和不消失模式；以及
控制单元，与所述铁电存储器电连接，所述控制单元用以获取所述电芯的状态信息，并将所述状态信息存储至所述铁电存储器；
其中，所述控制电路通过导通或断开所述电源输入端与所述电芯的电连接，以将所述铁电存储器切换至所述动态模式或不消失模式。
进一步地，所述电池还包括壳体，所述电芯以及所述控制电路均设置于所述壳体内。
进一步地，所述控制单元为现场可编程门阵列，内嵌有控制程序的微控制芯片或者单片机。
进一步地，所述状态信息包括如下至少一种：所述电芯的容量，所述电芯的电压，所述电芯的电流，所述电芯的电池温度。
进一步地，所述控制电路还包括开关单元，所述电源输入端通过所述开关单元电连接至所述电芯，所述控制单元通过导通或断开所述开关单元，进而导通或断开所述电源输入端与所述电芯的电连接。
进一步地，所述开关单元为金属氧化物半导体场效应晶体管、继电器或者机械开关。
进一步地，所述控制电路还包括触发按键，所述触发按键用以控制所述电芯供电或断电。
进一步地，当通过所述触发按键控制所述电芯换至断电状态时，所述控制单元将所述状态信息存储至所述铁电存储器；当通过所述触发按键控制所述电芯切换至供电状态时，所述控制单元从所述铁电存储器内获取所述状态信息。
进一步地，所述触发按键与所述控制单元电连接，所述触发按键用以发送一触发信号给所述控制单元，所述控制单元根据所述触发信号控制所述电源输入端与所述电芯的通断。
进一步地，所述触发按键与所述电芯电连接，当所述触发按键被触发时，所述电芯通过所述触发按键给所述控制单元短暂供电。
进一步地，所述控制电路还包括按键电源，所述触发按键与所述按键电源电连接，当所述触发按键被触发时，所述按键电源通过所述触发按键给所述控制单元短暂供电。
进一步地，所述控制电路还包括感测电路及充放电连接端，所述充放电连接端通过所述感测电路与所述电芯电连接，所述感测电路与所述控制单元电连接，所述感测电路用于感测所述充放电连接端是否与外部装置电导通；当所述感测电路感测所述充放电连接端与外部装置电导通时，所述控制单元导通所述电源输入端与所述电芯的电连接，当所述感测电路感测所述充放电连接端与外部装置电断开时，所述控制单元断开所述电源输入端与所述电芯的电连接。
进一步地，所述控制电路还包括充放电保护电路及充放电连接端，所述充放电保护电路电连接至所述控制单元及所述电芯，所述电芯通过所述充放电保护电路进行充电或对外供电，所述充放电连接端电连接至所述充放电保护电路，用以与外部装置电连接。
进一步地，所述充放电保护电路具有开关功能，所述控制单元通过所述充放电保护电路控制所述电芯与外部装置的通电与断电。
进一步地，所述控制电路还包括供电开关，所述供电开关电连接于所述充放电保护电路与所述电芯之间，并且与所述控制单元电连接，所述控制单元通过所述供电开关控制所述电芯与外部装置的通电与断电。
进一步地，所述控制电路还包括充放电保护电路及充放电连接端，所述充放电保护电路电连接至所述控制单元及所述电芯，所述电芯通过所述充放电保护电路进行充电或对外供电，所述充放电连接端电连接至所述充放电保护电路，用以与外部装置电连接。
进一步地，所述充放电保护电路通过所述开关单元与所述电芯电连接，所述控制单元通过所述开关单元控制所述电芯与所述外部装置的通电与断电。
进一步地，所述控制电路还包括信号接口，所述信号接口电连接至所述控制单元，所述控制电路通过所述信号接口电连接至外部设备，进而与外部设备进行数据通信。
一种电池控制方法，所述电池包括电芯及铁电存储器，所述铁电存储器具有动态模式和不消失模式，所述方法包括：
获取所述电芯的状态信息，并将所述状态信息存储至所述铁电存储器；
控制所述电芯与所述铁电存储器之间的通电或断电，将所述铁电存储器切换至所述动态模式或不消失模式，以更新或读取所述状态信息。
进一步地，所述状态信息包括如下至少一种：所述电芯的容量，所述电芯的电压，所述电芯的电流，所述电芯的电池温度。
进一步地，所述电池还包括开关单元，通过导通或断开所述开关单元，进而导通或断开所述铁电存储器与所述电芯的电连接。
进一步地，当所述电芯换至断电状态时，将所述状态信息存储至所述铁电存储器；当所述电芯切换至供电状态时，从所述铁电存储器内获取所述状态信息。
进一步地，当收到一触发信号时，根据所述触发信号控制所述铁电存储器与所述电芯之间的通断。
进一步地，当收到一触发信号时，控制所述电芯给所述铁电存储器供电。
进一步地，所述电池还包括按键电源，当收到一触发信号时，控制所述按键电源给所述铁电存储器供电。
进一步地，所述控制电路还包括充放电连接端，根据所述充放电连接端与外部装置的通断控制所述铁电存储器与所述电芯之间的通断。
上述电池可有效切断所述控制电路的电源，以将所述控制电路的功耗降为零，无需担心电芯过放问题，有效延长电池的存放时间。同时，由于所述控制电路还设置有该铁电存储器。因此即使当所述电芯处于断电状态时，所述铁电存储器仍可有效保存数据，防止信息丢失。即上述控制电路及具有该控制电路的电池既能有效降低功耗，还能有效保存数据，防止信息丢失。
 附图说明
图1为本发明实施例的电池的结构示意图。
图2为图1所示电池的其中一种功能模块图。
图3为图1所示电池的另一种功能模块图。
图4是本发明实施例的一种电池控制方法的流程示意图。
主要元件符号说明
电池 100
壳体 11
电芯 13
控制电路 17
开关单元 171
电源输入端 172
控制单元 173
FRAM 174
触发按键 S
充放电保护电路 175
充放电连接端 176
信号接口 178
感测电路 179
供电开关 SW
按键电源 Vcc
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，当一个元件被称为“电连接”另一个元件，它可以直接在另一个组件上或者也可以存在居中的元件。当一个元件被认为是“电连接”另一个元件，它可以是接触连接，例如，可以是导线连接的方式，也可以是非接触式连接，例如，可以是非接触式耦合的方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。
下面结合附图，对本发明的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
请参阅图1，本发明较佳实施例提供一种电池100，包括壳体11、电芯13以及控制电路17。所述电芯13及控制电路17均设置在所述壳体11内。所述控制电路17上设置有开关单元171，所述开关单元171电性连接至该电芯13。所述电池100通过控制所述开关单元171的导通及断开，使得所述电芯13与所述控制电路17之间建立电连接或断开连接，进而使得所述电芯13通过该开关单元171为所述控制电路17提供电源或者切断对所述控制电路17的供电。
所述开关单元171可以为金属氧化物半导体场效应晶体管（Metal Oxide Semiconductor Field Effect Transistor，MOS管)，或者继电器、机械开关等其他电子开关。在本实施例中，所述开关单元171为MOS管。
所述控制电路17可以包括一个或多个电路板，或者，包括一个或多个微处理器。请一并参阅图2，具体地，该控制电路17还包括电源输入端172、控制单元173、铁电存储器（Ferromagnetic Random Access Memory，FRAM）174以及触发按键S。所述控制单元173以及铁电存储器FRAM 174均电连接至所述电源输入端172。
所述电源输入端172通过所述开关单元171电性连接至所述电芯13的正负极，以接收所述电芯13输出的电能，进而作为所述控制电路17的电源，以为所述控制单元173以及FRAM 174的运行进行供电。
该控制单元173可以是现场可编程门阵列（Field-Programmable GateArray，FPGA），内嵌有控制程序的微控制芯片（Micro-Controller Unit，MCU）或者单片机等。在本实施例中，该控制单元173为MCU。
所述FRAM 174电连接至所述控制单元173，用于存储所述电池的状态信息及电芯型号、电芯化学特性、电池生产日期、电池编号、电池生产厂家等出厂信息。该电芯13的状态信息至少包括该电芯13的当前容量、该电芯13的当前电压、该电芯13的当前电流、该电芯13的当前电池温度等参数。该FRAM 174具有读写速度快、非易失性的优点，可以实现电池在关机时快速保存当前状态，以及在开机时快速恢复上次断电前的状态。
在本实施例中，该FRAM 174可以在动态模式和不消失模式之间进行转换。其中，在动态模式工作时，所述FRAM 174由于特殊的存储器结构而获得高介电常数，进而可以用作普通的动态随机存储器（Dynamic Random Access Memory，DRAM）。在不消失模式工作时，所述FRAM 174由于极化而达到的稳定状态，使得其没有电源也能有效保存数据。也就是说，即使所述开关单元171断开，以使得该电芯13停止向所述控制电路17供电，所述FRAM 174仍能有效工作，具有不消失的特性。
进一步的，当所述电芯13与所述控制电路17之间的开关单元171导通，使得电芯13与所述控制电路17电连接时，所述电芯13为所述控制电路17提供电源，此时所述FRAM 174工作在动态模式。该控制单元173可对该FRAM 174进行读/写操作，例如，将所述电芯13的状态信息存储至该FRAM 174。而当所述电芯13与所述控制电路17之间的开关单元171断开，使得该电芯13与所述控制电路17断开连接时，所述电芯13停止为所述控制电路17供电，所述FRAM 174切换至不消失模式。此时，所述FRAM 174仍能将该控制单元173存储至所述该FRAM 174的数据进行有效保存，以防止数据丢失。
该触发按键S用以控制所述电芯13供电或断电。例如，当所述电芯13处于一供电状态，即正对外供电时，若用户按下所述触发按键S，则所述电芯13切换至断电状态。当所述电芯13处于一断电状态，即停止对外供电时，若用户再次按下所述触发按键S，则所述电芯13将切换至供电状态，即恢复对外供电。更进一步的，所述触发按键S与所述控制单元173电连接。所述触发按键S用以发送一触发信号给所述控制单元173，所述控制单元173根据所述触发信号控制所述开关单元171的通断。
在本实施例中，所述控制电路17还包括按键电源Vcc。所述触发按键S与所述按键电源Vcc电连接。当通过所述触发按键S控制所述电芯13换至一断电状态时，所述按键电源Vcc通过所述触发按键S给所述控制单元173短暂供电。此时，所述控制单元173将当前的所述状态信息存储至所述FRAM 174，并控制所述开关单元171断开，进而使得所述电芯13与所述控制电路17断开电连接，即所述电芯13切断所述控制电路17的电源，使得该控制电路17的功耗为零，进而有效延长该电池100的存储寿命。当通过所述触发按键S控制所述电芯13换至所述供电状态时，所述按键电源Vcc通过所述触发按键S给所述控制单元173短暂供电。此时，所述控制单元173控制所述开关单元171导通，进而建立所述电芯13与所述控制电路17的电连接，使得所述电芯13继续为所述控制电路17进行供电。同时，所述FRAM 174将再次切换至动态模式，以方便所述控制单元173对该FRAM 174进行读/写操作。即所述控制电路17可恢复正常工作，并继续按上一次关机时的状态进行工作。
可以理解的是，在其他实施例中，所述按键电源Vcc也可以省略，而直接将所述触发按键S电连接至所述电芯13。此时，当所述触发按键S被触发时，所述电芯13可直接通过所述触发按键S给所述控制单元173短暂供电。
可以理解的是，所述控制电路17还包括充放电保护电路175及充放电连接端176。所述充放电保护电路175电性连接至所述控制单元173。所述电芯13可通过所述充放电保护电路175进行充电或对外供电。所述充放电连接端176电连接至所述充放电保护电路175，用以与一外部装置（图未示）电连接，以提供所述电池100的充、放电接口。例如，当所述电芯13通过该充放电连接端176电连接至所述外部装置时，该外部装置可通过该充放电连接端176对所述电池100进行充电。
在本实施例中，所述控制电路17还包括供电开关SW。所述供电开关SW电连接于所述充放电保护电路175与所述电芯13之间，并且与所述控制单元173电连接。所述控制单元173通过所述供电开关SW控制所述电芯13与充放电保护电路175的通电与断电，进而通过所述充放电保护电路175控制所述电芯13与外部装置的通电与断电。
可以理解，在其他实施例中，所述控制电路17也可不设置单独的供电开关SW，而是使得所述充放电保护电路175通过所述开关单元171与所述电芯13电连接。如此，所述控制单元173是通过所述开关单元171控制所述电芯13与充放电保护电路175的通电与断电，进而通过所述充放电保护电路175控制所述电芯13与外部装置的通电与断电。当然，在其他实施例中，当所述充放电保护电路175自身具有开关功能时，所述充放电保护电路175可直接电连接所述控制单元173及所述电芯13。如此，所述控制单元173可通过所述充放电保护电路175自身的开关控制所述电芯13与所述充放电保护电路175的通电与断电，进而通过所述充放电保护电路175控制所述电芯13与外部装置的通电与断电。
可以理解，所述控制电路17还包括信号接口178，所述信号接口178与所述控制单元173电性连接，用以建立该控制电路17与其他外部设备，例如，与无人飞行器的电连接，进而使得所述外部设备可与该控制电路17进行数据通信。
可以理解，当该所述电芯13处于供电状态，所述控制电路17正常工作。此时所述控制电路17中的FRAM 174工作于动态模式，所述控制单元173可定时或实时获取所述电芯13的状态信息，并将获取的状态信息写入至所述FRAM 174内。若此时用户按下所述触发按键S，所述电芯13切换至断电状态。此时所述电芯13或者所述按键电源Vcc通过所述触发按键S对所述控制单元173进行短暂供电，所述控制单元173获取所述电芯13的状态信息，并将所述状态信息存储至所述FRAM 174。接着，所述控制单元173断开所述开关单元171，进而使得所述电芯13与所述控制电路17断开电连接，即所述电芯13切断所述控制电路17的电源。此时，所述控制电路17停止工作，使其功耗为零，进而有效延长所述电池100的存储寿命。另外，当所述电芯13切断所述控制电路17的电源时，所述FRAM 174切换至不消失模式，因此即使所述电芯13与所述控制电路17断开连接，所述FRAM 174仍然能有效存储所述电芯13的状态信息，进而防止数据丢失。
或者，当控制单元173为机械开关，若此时用户按下所述机械开关，所述电芯13切换至断电状态，所述FRAM 174中保存了所述电芯13断电前的状态信息。
当所述电芯13处于断电状态，而用户再次按下所述触发按键S时，则所述电芯13切换至供电状态。此时所述电芯13或者所述按键电源Vcc通过所述触发按键S对所述控制单元173进行短暂供电，所述控制单元173控制所述开关单元171导通，进而建立所述电芯13与所述控制电路17的电连接，使得所述电芯13继续为所述控制电路17进行供电。同时，所述FRAM 174将再次切换至动态模式，以方便所述控制单元173对该FRAM 174进行读/写操作。如此，所述控制电路17可继续按上一次关机时的状态进行工作。
请一并参阅图3，可以理解，在其他实施例中，所述触发按键S可省略。此时，所述控制电路17包括感测电路179。所述充放电连接端176通过所述感测电路179与所述电芯13电连接。所述感测电路178还与所述控制单元173电连接，用于感测所述充放电连接端176是否与外部装置电导通。当所述感测电路178感测所述充放电连接端176与所述外部装置电导通时，所述控制单元173控制所述开关单元171导通。当所述感测电路178感测所述充放电连接端176与外部装置电断开时，所述控制单元173控制所述开关单元171断开。
具体请参见图4，是本发明实施例的一种电池控制方法的流程示意图，本发明实施例的所述方法具体可以通过控制单元来实现，具体的，所述方法包括：
S101：获取所述电芯13的状态信息，并将所述状态信息存储至所述FRAM 174。
其中，所述状态信息包括如下至少一种：所述电芯13的容量，所述电芯13的电压，所述电芯13的电流，所述电芯13的电池温度。
S102：控制所述电芯13与所述FRAM 174之间的通电或断电，将所述FRAM 174切换至所述动态模式或不消失模式，以更新或读取所述状态信息。
进一步的，所述电池100还包括开关单元171。所述开关单元171电连接所述电芯13与FRAM 174。所述控制单元173是通过导通或断开所述开关单元171，进而导通或断开所述FRAM 174与所述电芯13的电连接。
可以理解的，所述电芯13具有供电状态及断电状态。当所述电芯13切换至断电状态时，所述控制单元173将所述状态信息存储至所述FRAM 174。当所述电芯13切换至供电状态时，所述控制单元173可从所述FRAM 174内获取所述状态信息。
可以理解，所述电池100还包括触发按键S。所述触发按键S用以控制所述电芯13的供电或断电。例如，当所述电芯13处于一供电状态，即正对外供电时，若用户按下所述触发按键S，则所述电芯13切换至断电状态。当所述电芯13处于一断电状态，即停止对外供电时，若用户再次按下所述触发按键S，则所述电芯13将切换至供电状态，即恢复对外供电。
更进一步的，所述触发按键S与所述控制单元173电连接。所述触发按键S用以发送一触发信号给所述控制单元173，所述控制单元173根据所述触发信号控制所述开关单元171的通断。
更进一步的，所述触发按键S可电连接至所述电芯13。因此，当所述触发按键S被触发时，所述电芯13可直接通过所述触发按键S给所述控制单元173短暂供电。
更进一步的，所述电池100还包括按键电源Vcc，所述按键电源Vcc电连接至所述触发按键S。所述按键电源Vcc通过所述触发按键S给所述控制单元173短暂供电。
更进一步的，所述控制电路17还包括充放电连接端176，所述控制单元173可根据所述充放电连接端176与外部装置的通断控制所述FRAM 174与所述电芯13之间的通断。
上述电池100可通过切断所述控制电路17的电源，以将所述控制电路17的功耗降为零，无需担心电芯13过放问题，有效延长电池100的存放时间。同时，由于所述控制电路17设置有该FRAM 174。因此即使当所述电芯13处于断电状态时，所述FRAM 174仍可有效保存数据，防止信息丢失。也就是说，该控制电路17及具有该控制电路17的电池100既能有效降低功耗，还能有效保存数据，防止信息丢失。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (43)

  1. 一种用于控制电芯的控制电路，其特征在于，包括：
    电源输入端，所述电源输入端用以电连接至所述电芯，以为所述控制电路提供电源；
    铁电存储器，所述铁电存储器具有动态模式和不消失模式；以及
    控制单元，与所述铁电存储器电连接，所述控制单元用以获取所述电芯的状态信息，并将所述状态信息存储至所述铁电存储器；
    其中，所述控制电路通过导通或断开所述电源输入端与所述电芯的电连接，以将所述铁电存储器切换至所述动态模式或不消失模式。
  2. 如权利要求1所述的控制电路，其特征在于，所述控制单元为现场可编程门阵列，内嵌有控制程序的微控制芯片或者单片机。
  3. 如权利要求1所述的控制电路，其特征在于，所述状态信息包括如下至少一种：所述电芯的容量，所述电芯的电压，所述电芯的电流，所述电芯的电池温度。
  4. 如权利要求1所述的控制电路，其特征在于，所述控制电路还包括开关单元，所述电源输入端通过所述开关单元电连接至所述电芯，所述控制单元通过导通或断开所述开关单元，进而导通或断开所述电源输入端与所述电芯的电连接。
  5. 如权利要求4所述的控制电路，其特征在于，所述开关单元为金属氧化物半导体场效应晶体管、继电器或者机械开关。
  6. 如权利要求1所述的控制电路，其特征在于，所述控制电路还包括触发按键，所述触发按键用以控制所述电芯供电或断电。
  7. 如权利要求6所述的控制电路，其特征在于，当通过所述触发按键控制所述电芯换至断电状态时，所述控制单元将所述状态信息存储至所述铁电存储器；当通过所述触发按键控制所述电芯切换至供电状态时，所述控制单元从所述铁电存储器内获取所述状态信息。
  8. 如权利要求6所述的控制电路，其特征在于，所述触发按键与所述控制单元电连接，所述触发按键用以发送一触发信号给所述控制单元，所述控制单元根据所述触发信号控制所述电源输入端与所述电芯的通断。
  9. 如权利要求6所述的控制电路，其特征在于，所述触发按键与所述电芯电连接，当所述触发按键被触发时，所述电芯通过所述触发按键给所述控制单元短暂供电。
  10. 如权利要求6所述的控制电路，其特征在于，所述控制电路还包括按键电源，所述触发按键与所述按键电源电连接，当所述触发按键被触发时，所述按键电源通过所述触发按键给所述控制单元短暂供电。
  11. 如权利要求1所述的控制电路，其特征在于，所述控制电路还包括感测电路及充放电连接端，所述充放电连接端通过所述感测电路与所述电芯电连接，所述感测电路与所述控制单元电连接，所述感测电路用于感测所述充放电连接端是否与外部装置电导通；当所述感测电路感测所述充放电连接端与外部装置电导通时，所述控制单元导通所述电源输入端与所述电芯的电连接，当所述感测电路感测所述充放电连接端与外部装置电断开时，所述控制单元断开所述电源输入端与所述电芯的电连接。
  12. 如权利要求1所述的控制电路，其特征在于，所述控制电路还包括充放电保护电路及充放电连接端，所述充放电保护电路电连接至所述控制单元及所述电芯，所述电芯通过所述充放电保护电路进行充电或对外供电，所述充放电连接端电连接至所述充放电保护电路，用以与外部装置电连接。
  13. 如权利要求12所述的控制电路，其特征在于，所述充放电保护电路具有开关功能，所述控制单元通过所述充放电保护电路控制所述电芯与外部装置的通电与断电。
  14. 如权利要求12所述的控制电路，其特征在于，所述控制电路还包括供电开关，所述供电开关电连接于所述充放电保护电路与所述电芯之间，并且与所述控制单元电连接，所述控制单元通过所述供电开关控制所述电芯与外部装置的通电与断电。
  15. 如权利要求4所述的控制电路，其特征在于，所述控制电路还包括充放电保护电路及充放电连接端，所述充放电保护电路电连接至所述控制单元及所述电芯，所述电芯通过所述充放电保护电路进行充电或对外供电，所述充放电连接端电连接至所述充放电保护电路，用以与外部装置电连接。
  16. 如权利要求15所述的控制电路，其特征在于，所述充放电保护电路通过所述开关单元与所述电芯电连接，所述控制单元通过所述开关单元控制所述电芯与所述外部装置的通电与断电。
  17. 如权利要求1所述的控制电路，其特征在于，所述控制电路还包括信号接口，所述信号接口电连接至所述控制单元，所述控制电路通过所述信号接口电连接至外部设备，进而与外部设备进行数据通信。
  18. 一种电池，其特征在于，包括电芯以及用于控制电芯的控制电路，所述控制电路包括：
    电源输入端，所述电源输入端用以电连接至所述电芯，以为所述控制电路提供电源；
    铁电存储器，所述铁电存储器具有动态模式和不消失模式；以及
    控制单元，与所述铁电存储器电连接，所述控制单元用以获取所述电芯的状态信息，并将所述状态信息存储至所述铁电存储器；
    其中，所述控制电路通过导通或断开所述电源输入端与所述电芯的电连接，以将所述铁电存储器切换至所述动态模式或不消失模式。
  19. 如权利要求18所述的电池，其特征在于，所述电池还包括壳体，所述电芯以及所述控制电路均设置于所述壳体内。
  20. 如权利要求18所述的电池，其特征在于，所述控制单元为现场可编程门阵列，内嵌有控制程序的微控制芯片或者单片机。
  21. 如权利要求18所述的电池，其特征在于，所述状态信息包括如下至少一种：所述电芯的容量，所述电芯的电压，所述电芯的电流，所述电芯的电池温度。
  22. 如权利要求18所述的电池，其特征在于，所述控制电路还包括开关单元，所述电源输入端通过所述开关单元电连接至所述电芯，所述控制单元通过导通或断开所述开关单元，进而导通或断开所述电源输入端与所述电芯的电连接。
  23. 如权利要求22所述的电池，其特征在于，所述开关单元为金属氧化物半导体场效应晶体管、继电器或者机械开关。
  24. 如权利要求18所述的电池，其特征在于，所述控制电路还包括触发按键，所述触发按键用以控制所述电芯供电或断电。
  25. 如权利要求24所述的电池，其特征在于，当通过所述触发按键控制所述电芯换至断电状态时，所述控制单元将所述状态信息存储至所述铁电存储器；当通过所述触发按键控制所述电芯切换至供电状态时，所述控制单元从所述铁电存储器内获取所述状态信息。
  26. 如权利要求24所述的电池，其特征在于，所述触发按键与所述控制单元电连接，所述触发按键用以发送一触发信号给所述控制单元，所述控制单元根据所述触发信号控制所述电源输入端与所述电芯的通断。
  27. 如权利要求24所述的电池，其特征在于，所述触发按键与所述电芯电连接，当所述触发按键被触发时，所述电芯通过所述触发按键给所述控制单元短暂供电。
  28. 如权利要求24所述的电池，其特征在于，所述控制电路还包括按键电源，所述触发按键与所述按键电源电连接，当所述触发按键被触发时，所述按键电源通过所述触发按键给所述控制单元短暂供电。
  29. 如权利要求18所述的电池，其特征在于，所述控制电路还包括感测电路及充放电连接端，所述充放电连接端通过所述感测电路与所述电芯电连接，所述感测电路与所述控制单元电连接，所述感测电路用于感测所述充放电连接端是否与外部装置电导通；当所述感测电路感测所述充放电连接端与外部装置电导通时，所述控制单元导通所述电源输入端与所述电芯的电连接，当所述感测电路感测所述充放电连接端与外部装置电断开时，所述控制单元断开所述电源输入端与所述电芯的电连接。
  30. 如权利要求18所述的电池，其特征在于，所述控制电路还包括充放电保护电路及充放电连接端，所述充放电保护电路电连接至所述控制单元及所述电芯，所述电芯通过所述充放电保护电路进行充电或对外供电，所述充放电连接端电连接至所述充放电保护电路，用以与外部装置电连接。
  31. 如权利要求30所述的电池，其特征在于，所述充放电保护电路具有开关功能，所述控制单元通过所述充放电保护电路控制所述电芯与外部装置的通电与断电。
  32. 如权利要求30所述的电池，其特征在于，所述控制电路还包括供电开关，所述供电开关电连接于所述充放电保护电路与所述电芯之间，并且与所述控制单元电连接，所述控制单元通过所述供电开关控制所述电芯与外部装置的通电与断电。
  33. 如权利要求22所述的电池，其特征在于，所述控制电路还包括充放电保护电路及充放电连接端，所述充放电保护电路电连接至所述控制单元及所述电芯，所述电芯通过所述充放电保护电路进行充电或对外供电，所述充放电连接端电连接至所述充放电保护电路，用以与外部装置电连接。
  34. 如权利要求33所述的电池，其特征在于，所述充放电保护电路通过所述开关单元与所述电芯电连接，所述控制单元通过所述开关单元控制所述电芯与所述外部装置的通电与断电。
  35. 如权利要求18所述的电池，其特征在于，所述控制电路还包括信号接口，所述信号接口电连接至所述控制单元，所述控制电路通过所述信号接口电连接至外部设备，进而与外部设备进行数据通信。
  36. 一种电池控制方法，所述电池包括电芯及铁电存储器，所述铁电存储器具有动态模式和不消失模式，其特征在于，所述方法包括：
    获取所述电芯的状态信息，并将所述状态信息存储至所述铁电存储器；
    控制所述电芯与所述铁电存储器之间的通电或断电，将所述铁电存储器切换至所述动态模式或不消失模式，以更新或读取所述状态信息。
  37. 如权利要求36所述的电池控制方法，其特征在于，所述状态信息包括如下至少一种：所述电芯的容量，所述电芯的电压，所述电芯的电流，所述电芯的电池温度。
  38. 如权利要求36所述的电池控制方法，其特征在于，所述电池还包括开关单元，通过导通或断开所述开关单元，进而导通或断开所述铁电存储器与所述电芯的电连接。
  39. 如权利要求36所述的电池控制方法，其特征在于，当所述电芯换至断电状态时，将所述状态信息存储至所述铁电存储器；当所述电芯切换至供电状态时，从所述铁电存储器内获取所述状态信息。
  40. 如权利要求36所述的电池控制方法，其特征在于，当收到一触发信号时，根据所述触发信号控制所述铁电存储器与所述电芯之间的通断。
  41. 如权利要求36所述的电池控制方法，其特征在于，当收到一触发信号时，控制所述电芯给所述铁电存储器供电。
  42. 如权利要求36所述的电池控制方法，其特征在于，所述电池还包括按键电源，当收到一触发信号时，控制所述按键电源给所述铁电存储器供电。
  43. 如权利要求36所述的电池控制方法，其特征在于，所述控制电路还包括充放电连接端，根据所述充放电连接端与外部装置的通断控制所述铁电存储器与所述电芯之间的通断。
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EP3316383A4 (en) 2018-06-06
CN105580242B (zh) 2018-02-02
CN107769317B (zh) 2020-09-15
US20180123183A1 (en) 2018-05-03
JP2017523548A (ja) 2017-08-17
EP3316383A1 (en) 2018-05-02
JP6379203B2 (ja) 2018-08-22
CN105580242A (zh) 2016-05-11
US11139511B2 (en) 2021-10-05

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