WO2023184830A1 - 一种备份电池单元的控制电路、方法、装置及存储系统 - Google Patents

一种备份电池单元的控制电路、方法、装置及存储系统 Download PDF

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Publication number
WO2023184830A1
WO2023184830A1 PCT/CN2022/113523 CN2022113523W WO2023184830A1 WO 2023184830 A1 WO2023184830 A1 WO 2023184830A1 CN 2022113523 W CN2022113523 W CN 2022113523W WO 2023184830 A1 WO2023184830 A1 WO 2023184830A1
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WIPO (PCT)
Prior art keywords
bbu
charging
control
package
circuit
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PCT/CN2022/113523
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English (en)
French (fr)
Inventor
华要宇
崔学涛
王瑞杰
王鲁泮
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苏州浪潮智能科技有限公司
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Publication of WO2023184830A1 publication Critical patent/WO2023184830A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
    • 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
    • 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
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • 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
    • 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 application relates to the field of storage technology, and in particular to a control circuit, method, device and storage system for a backup battery unit.
  • a control circuit, method, device and storage system for a backup battery unit are provided.
  • a control circuit for a backup battery unit including: a BBU charging circuit; wherein the BBU charging circuit includes: an improved H-bridge charging unit; the improved H-bridge charging unit includes a first switch tube, a second switch tube, The third switch tube, diode and inductor; the first end of the first switch tube is used to be connected to the input end of the charging power supply, and the second end of the first switch tube is connected to the first end of the inductor respectively. is connected to the cathode of the diode, and the second end of the inductor is respectively connected to the first end of the second switch tube and the second end of the third switch tube. The second end of the second switch tube is connected to the cathode of the diode.
  • the terminal is used to connect to the input terminal of the BBU package, the anode of the diode and the first terminal of the third switch tube are grounded, and the first terminal, the second switch tube and the third switch tube are grounded.
  • the control terminal is connected to the BBU control unit and is used to switch the charging mode of the BBU according to the control of the BBU control unit; the charging mode includes a precharge charging mode, a constant current charging mode and a constant voltage charging mode.
  • a control method for a backup battery unit applied to the control circuit of the backup battery unit as described above, including: obtaining a system control signal; and responding to the system control signal to provide a BBU charging control signal, according to the backup battery unit
  • the circuit sampling information of the control circuit controls the charging mode of the BBU charging circuit in the control circuit of the backup battery unit; wherein the charging mode includes a precharge charging mode, a constant current charging mode and a constant voltage charging mode.
  • a control device for a backup battery unit applied to the control circuit of the backup battery unit as described above, including: a signal acquisition module for acquiring a system control signal; and a circuit control module for responding to the system control signal is the BBU charging control signal, then the charging mode of the BBU charging circuit in the control circuit of the backup battery unit is controlled according to the circuit sampling information of the control circuit of the backup battery unit; wherein the charging mode includes a precharge charging mode. , constant current charging mode and constant voltage charging mode.
  • a storage system including: a memory, a processor, and a control circuit for a backup battery unit as described above; wherein the memory is used to store computer-readable instructions; and the processor is used to execute the computer-readable instructions.
  • the steps of the control method of the backup battery unit as described above are implemented.
  • Figure 1 is a circuit schematic diagram of a BBU charging circuit in a control circuit of a backup battery unit according to one or more embodiments
  • Figure 2 is a circuit schematic diagram of a BBU discharge circuit in a control circuit of a backup battery unit according to one or more embodiments
  • Figure 3 is a circuit schematic diagram of a package-end hot plug protection circuit in a control circuit of a backup battery unit according to one or more embodiments;
  • Figure 4 is a circuit schematic diagram of a system-side hot plug protection circuit in a control circuit of a backup battery unit according to one or more embodiments
  • Figure 5 is a schematic flowchart of a control method for a backup battery unit according to one or more embodiments
  • Figure 6 is a schematic flowchart of a method for controlling a backup battery unit according to one or more embodiments
  • Figure 7 is a structural block diagram of a control device for a backup battery unit according to one or more embodiments.
  • Figure 8 is a schematic structural diagram of a storage system according to one or more embodiments.
  • FIG. 1 is a circuit schematic diagram of a BBU charging circuit in a control circuit of a backup battery unit according to one or more embodiments.
  • the control circuit of the backup battery unit may include: BBU charging circuit; wherein, the BBU charging circuit may include: an improved H-bridge charging unit 10; the improved H-bridge charging unit 10 includes a first switching tube Q5, a second switching tube Q4, The third switching tube Q3, the diode D1 and the inductor L1; the first terminal of the first switching tube Q5 is used to connect to the input terminal of the charging power supply, and the second terminal of the first switching tube Q5 is connected to the first terminal of the inductor L1 respectively.
  • the second end of the inductor L1 is connected to the cathode of the diode D1.
  • the second end of the inductor L1 is connected to the first end of the second switch Q4 and the second end of the third switch Q3.
  • the second end of the second switch Q4 is used to connect to the BBU.
  • the input terminal of the package is connected, the anode of the diode D1 and the first terminal of the third switch tube Q3 are connected to the ground, and the control terminals of the first switch tube Q5, the second switch tube Q4 and the third switch tube Q3 are connected to the BBU control unit for
  • the charging mode of the BBU is switched according to the control of the BBU control unit.
  • the charging mode includes a precharge charging mode, a constant current charging mode and a constant voltage charging mode.
  • the BBU package (BBU PACK) in this embodiment may be a battery pack of encapsulated backup battery units.
  • the BBU charging circuit in the control circuit of the backup battery unit in this embodiment may be a circuit used to charge the BBU package using the electric energy output by the charging power source (such as a constant voltage source).
  • the BBU charging circuit can charge in three modes: precharge charging mode, constant current charging mode and constant voltage charging mode according to the control of the BBU control unit.
  • the BBU package is charged in this mode to ensure the charging efficiency of the BBU package; and it can avoid the occurrence of current backflow, ensuring the reliability of charging of the BBU package.
  • the improved H-bridge charging unit 10 may include a first switch Q5, a second switch Q4, a third switch Q3, a diode D1 and an inductor L1; One end is used to connect to the input terminal PSU12VIN of the charging power supply.
  • the second end of the first switch Q5 is connected to the first end of the inductor L1 and the cathode of the diode D1.
  • the second end of the inductor L1 is connected to the second switch respectively.
  • the first end of the transistor Q4 is connected to the second end of the third switching transistor Q3.
  • the second end of the second switching transistor Q4 is used to connect with the input terminal PACK+ of the BBU package.
  • the anode of the diode D1 is connected to the third end of the third switching transistor Q3. One end is connected to ground, and the control terminals of the first switching tube Q5, the second switching tube Q4 and the third switching tube Q3 are connected to the BBU control unit for switching the charging mode of the BBU according to the control of the BBU control unit; for example, the BBU control unit can control
  • the improved H-bridge charging unit 10 switches to BUCK (buck circuit) to precharge the BBU package, or switches to BUCK-BOOST (buck-boost circuit) to perform constant current charging of the BBU package, or switches to BOOST ( Boost circuit) performs constant voltage charging on the BBU package.
  • the first switching tube Q5 can be specifically a PMOS tube, that is, the source of the first switching tube Q5 is used to be connected to the input terminal PSU12VIN of the charging power supply, and the drain of the first switching tube Q5 is connected to The first end of the inductor L1 is connected to the cathode of the diode D1, and the gate of the first switching tube Q5 is used to connect to the output terminal of a control signal PWM2 of the BBU control unit;
  • the second switching tube Q4 and the third switching tube Q3 can Specifically, it is an NMOS tube, that is, the source of the second switch Q4 can be connected to the drain of the third switch Q3, the drain of the second switch Q4 is used to connect to the input terminal of the BBU package, and the third switch Q3 The source is grounded, and the gates of the second switch Q4 and the third switch Q3 are used to connect to the output terminals of the corresponding control signals PWM3 and PWM4 of the BBU control unit; corresponding
  • the charging input protection unit 20 may include: a first resistor R13, a second resistor R10, a third resistor R11, and a fourth switch Q1; wherein, the first resistor The first end of R13 is connected to the first end of the second resistor R10. The common end of the first resistor R13 and the second resistor R10 is used to connect to the input terminal PSU12VIN of the charging power supply. The second end of the second resistor R10 is connected to the third end of the resistor R13.
  • the first end of the resistor R11 is connected, and the common end of the second resistor R10 and the third resistor R11 is used as the charging input voltage sampling point VSENS; the second end of the third resistor R11 is connected to ground, and the second end of the first resistor R13 is connected to the fourth switch.
  • the first end of the tube Q1 is connected, and the second end of the fourth switching tube Q1 is connected with the first end of the first switching tube Q5; the first end and the second end of the first resistor R13 serve as the charging input current sampling point ISENS;
  • the control end of the four-switch tube Q1 is used to connect with the corresponding controller.
  • the fourth switching tube Q1 can be specifically an NMOS tube, and the control terminal (ie, the gate) of the fourth switching tube Q1 is connected to the input terminal of the corresponding control signal PWM1 in the corresponding controller through the corresponding resistor R12.
  • control circuit of the backup battery unit provided by the present application may also include: a hot-swap controller connected to the control end of the fourth switch Q1, such as the hot-swap controller of the TPS247XX series.
  • the device is used to control the charging input protection unit 20 to turn on or off the improved H-bridge charging unit 10 and charge using the charging input voltage and charging input current sampled at the charging input voltage sampling point VSENS and the charging input current sampling point ISENS. connections between power supplies.
  • the charging output protection unit 30 can shut down the advanced H-bridge charging unit when the charging output voltage, charging output current or PACK status is abnormal according to the control of the corresponding controller (such as the charging output protection MCU or BBU control unit).
  • the connection with the BBU package prevents abnormal charging from affecting the battery life of the BBU package.
  • the charging output protection unit 30 may include: a fourth resistor R6 , a fifth resistor R5 , a sixth resistor R4 , a seventh resistor R2 , an eighth resistor R1 and a third resistor R2 .
  • Eight switching tubes Q2 among them, the first end of the fourth resistor R6 is used to connect to the output end of the improved H-bridge charging unit 10; the second end of the fourth resistor R6 is connected to the first end of the fifth resistor R5, The common end of the four resistors R6 and the fifth resistor R5 is connected to the second end of the eighth switch Q2; the second end of the fifth resistor R5 is connected to the first end of the sixth resistor R4, and the fifth resistor R5 and the sixth resistor
  • the common end of R4 is used as the charging output voltage sampling point CVSENS; the first end of the eighth switch Q2 is connected to the first end of the seventh resistor R2, and the common end of the eighth switch Q2 and the seventh resistor R2 is used for the BBU package.
  • the input end is connected; the second end of the seventh resistor R2 is connected to the first end of the eighth resistor R1, and the common end of the seventh resistor R2 and the eighth resistor R1 serves as the BBU package voltage sampling point PACKSENS; the first end of the fourth resistor R6 The second terminal and the second terminal are used as the charging output current sampling point CISENS; the second terminal of the sixth resistor R4 and the second terminal of the eighth resistor R1 are both grounded.
  • the eighth switching tube R1 can be specifically a PMOS tube, and the control terminal (ie, the gate) of the eighth switching tube R1 is connected to the input terminal of the corresponding control signal PWM5 in the corresponding controller through the corresponding resistor R3.
  • the input and output ends of the improved H-bridge charging unit 10 can be connected in parallel with capacitors C3 and C1 and electrolytic capacitors C4 and C2 respectively to increase the input voltage and output voltage. stability.
  • control circuit of the backup battery unit may also include a BBU discharge circuit for using the power output from the BBU package to power the target device (such as a PSU).
  • the BBU discharge circuit may include a synchronous voltage reduction unit for reducing the electric energy output by the BBU package to a preset voltage and outputting it to the target device according to the control of the BBU control unit.
  • the synchronous buck unit includes a fifth switching tube Q4, a sixth switching tube Q3 and a seventh switching tube Q2; wherein, the second end of the fifth switching tube Q4 and the second end of the sixth switching tube Q3 connection, the common terminal of the fifth switching tube Q4 and the sixth switching tube Q3 is used to connect with the discharge output terminal PACK+ of the BBU package; the first terminal of the fifth switching tube Q4 and the first terminal of the sixth switching tube Q3 are both connected to the first terminal of the fifth switching tube Q4 and the first terminal of the sixth switching tube Q3.
  • the second end of the seventh switch Q2 is connected, and the common end of the fifth switch Q4 and the sixth switch Q3 is used to connect with the power supply input terminal B+ of the target device; the first end of the seventh switch Q2 is grounded, and the fifth switch Q2
  • the control terminals of the tube Q4, the sixth switching tube Q3 and the seventh switching tube Q2 are connected to the BBU control unit for adjusting the preset voltage according to the control of the BBU control unit; for example, the BBU control unit can adjust the preset voltage according to the output voltage and synchronization drop of the BBU package.
  • the full digital PID control algorithm is used to adjust the duty cycle of the PWM signals corresponding to the fifth switching tube Q4, the sixth switching tube Q3 and the seventh switching tube Q2 (PWM6 and PWM7 in Figure 2);
  • the fifth switching tube Q4, the sixth switching tube Q3 and the seventh switching tube Q2 can all be NMOS tubes to ensure that the output voltage of the synchronous buck unit is constant 11.5V (i.e. the preset voltage) and ensure backup The power supply cold standby and hot standby can be automatically switched.
  • the synchronous buck unit may also include a filter inductor L1, and the common terminal connected to the source of the fifth switch Q4, the source of the sixth switch Q3, and the drain of the seventh switch Q2 can be connected through Filter inductor L1 is connected to the target device.
  • the BBU discharge circuit may also include an anti-backflow unit for providing the discharge output voltage sampling point of the synchronous buck unit (VSENS in Figure 2) and the discharge output current sampling point (as shown in Figure 2) ISENS in 2), according to the control of the corresponding controller, the connection between the synchronous buck unit and the target device is turned on or off; among them, the output end of the synchronous buck unit is connected to the target device through the anti-backflow unit.
  • the anti-backflow unit may include: a ninth resistor R1, a tenth resistor R7, an eleventh resistor R6, and a ninth switching tube Q1; wherein the first end of the ninth resistor R1 is used to step down the voltage synchronously.
  • the output end of the unit is connected; the second end of the ninth resistor R1 is connected to the first end of the tenth resistor R7 and the first end of the ninth switch Q1 respectively; the second end of the tenth resistor R7 is connected to the first end of the eleventh resistor R6 The first end is connected, and the common end of the tenth resistor R7 and the eleventh resistor R6 serves as the discharge output voltage sampling point VSENS; the second end of the ninth switch Q1 is used to connect to the target device; both ends of the ninth resistor R1 serve as The discharge output current sampling point ISENS; the second end of the eleventh resistor R6 is grounded, and the control end of the ninth switching tube Q1 is used to connect with the input end of the corresponding control signal PWM8 in the corresponding controller.
  • control circuit of the backup battery unit may further include a package end hot plug protection circuit disposed between the connection of the first target interface signal between the BBU control unit and the BBU package, for Provide static electricity and hot plug protection for the first target interface signal between the BBU control unit and the BBU package;
  • the first target interface signal may include the BBU presence signal, system presence signal, I2C clock signal and I2C data signal
  • the first target interface signal may include the BBU presence signal PACK_BBUPRE1, the system presence signal PACK_SYSPRE1, the I2C clock signal PACK_SCL1 and the I2C data signal PACK_SDA1.
  • the control circuit of the backup battery unit may also include a system-side hot plug protection circuit disposed between the BBU control unit and the connection of the second target interface signal between the system side; wherein, The second target interface signal includes at least one of a BBU charging enable signal, a BBU discharging enable signal, a BBU in-position signal, a system in-position signal, a BBU internal discharge enable signal, a system I2C clock signal and a system I2C data signal; As shown in Figure 4, the second target interface signal includes the BBU charging enable signal BBU_CHG, the BBU discharge enable signal BBU_DIS, the BBU presence signal BBU_PRE, the system presence signal SYS_PRE, the BBU internal discharge enable signal BBU_TEST, and the system I2C clock signal. BBU_SCL and system I2C data signal BBU_SDA.
  • each system side hot plug protection circuit may include: a second series resistor and a second bidirectional thyristor; the first end of the second series resistor and The corresponding pin of the second target interface signal in the system is connected; the second end of the second series resistor is connected to the first end of the second bidirectional thyristor, and the common end of the second series resistor and the second bidirectional thyristor is connected to the BBU The corresponding pin of the second target interface signal in the control unit is connected; the second end of the second bidirectional thyristor is connected to ground.
  • TVS Transient Voltage Suppressor, transient diode
  • TVS Transient Voltage Suppressor, transient diode
  • the BBU package can be charged in a variety of charging modes, and during the charging process of the BBU package, the BBU package can be charged. This avoids current backflow and improves the charging efficiency and reliability of the BBU package, allowing the backup battery unit to provide stable and reliable power supply.
  • a control method of the backup battery unit is also provided.
  • the control method of the backup battery unit described below is the same as the control method of the backup battery unit described above.
  • the control circuits of a backup battery unit can correspond to each other.
  • FIG. 5 is a flow chart of a control method of a backup battery unit according to one or more embodiments. This method is applied to the control circuit of the backup battery unit provided in the above embodiment, and may include:
  • Step 101 Obtain system control signals.
  • the system control signal in this embodiment may be a signal transmitted from the system end (such as a storage system, server or mainframe computer) to the processor (such as the BBU control unit) for controlling the charging and discharging of the BBU package.
  • the system control signal can include a BBU charging control signal used to control BBU package charging, that is, the processor can The obtained BBU charging control signal controls the charging of the BBU package; the system control signal can also include a BBU discharge control signal used to control the discharge of the BBU package, that is, the processor can discharge the BBU package according to the obtained BBU discharge control signal.
  • the system control signal can also include a verification learning signal used to control the internal discharge of the BBU package, that is, the processor can control the internal discharge of the BBU package based on the acquired BBU charging control signal to eliminate the metering chip in the BBU package
  • the error accumulation can also further analyze and evaluate the power backup capability of the BBU package.
  • the processor before acquiring the system control signal, can also read information such as the package (PACK) model, status and key parameters of the BBU package when the system is powered on or the insertion of the BBU package is detected. , to determine whether the PACK model of the BBU package matches and whether there are abnormalities in the BBU package, so as to control the BBU package to work normally when the PACK model matches and the performance is normal; as shown in Figure 6, the processor can use the communication control subroutine, When the PACK model matches, the communication link is switched according to the needs, the master-slave device is automatically switched through SMBUS (System Management Bus, System Management Bus) communication, and the BBU package is controlled to work normally.
  • SMBUS System Management Bus, System Management Bus
  • the processor before acquiring the system control signal, can read the package model of the BBU package after the system is powered on or the BBU package is inserted; determine whether the package model matches the preset package signal; respond to If the package model matches the preset package signal, execute the step of obtaining the system control signal; in response to the package model not matching the preset package signal, you can directly end the process or output the package model matching exception information of the BBU package to prompt the user Replace and adjust the BBU package.
  • the processor before acquiring the system control signal, can also detect whether the BBU package is in place to determine whether there is a plug-in/unplug action in the BBU package, thereby controlling the BBU package to be normal when the BBU package is in place. Work. As shown in Figure 6, when the PACK model matches, the processor can scan the package (PACK) presence signal of the BBU package through the scanning subroutine to determine whether there is a plug-in or unplug action in the BBU package, so that the BBU package is in place, that is, the BBU package When inserted, the control BBU package works normally.
  • the processor determines whether the BBU package is in place based on the package in-place signal of the BBU package; in response to the BBU package being in place, the processor performs the step of obtaining the system control signal; in response to If the BBU package is not in place, you can end this process directly or continue to scan the BBU package's package in-place signal.
  • the processor when the system control signal is the BBU charging control signal, the processor can control switching of the charging mode of the BBU charging circuit according to the circuit sampling information sampled from the control circuit of the backup battery unit, thereby switching according to the switching mode.
  • the charging mode charges the BBU package; for example, the processor can use the sampling subroutine to sample circuits such as the BBU package voltage, storage system supply voltage, charging input current, charging output voltage, charging output current, discharge output voltage, and discharge output current.
  • the information is sampled and stored; in this step, the processor can control the switching of the charging mode of the BBU charging circuit based on the voltage difference between the BBU package voltage and the charging output voltage in the circuit sampling information.
  • the method in some embodiments of the present application may also include controlling the BBU discharge circuit in the control circuit of the backup battery unit when the system control signal is a BBU discharge control signal, and using the discharge of the BBU package to discharge the target device at a preset voltage.
  • the process of power supply (such as PSU), for example, in response to the system control signal for the BBU discharge control signal, the processor can use a fully digital PID control algorithm to sample the discharge in the BBU discharge circuit in the control circuit of the backup battery unit. Output voltage and discharge output current, adjust the PID duty cycle, and control the output voltage of the synchronous buck unit of the BBU discharge circuit at the preset voltage.
  • the processor can use the discharge control subroutine to adjust the PID duty cycle through the full digital PID control algorithm according to the sampling analysis results corresponding to the discharge output voltage and discharge output current in the circuit sampling information, and adjust the BBU discharge circuit
  • the output voltage is controlled at a preset voltage (such as 11.5V) to ensure that the BBU package can automatically switch between cold backup power supply and hot backup power supply according to the storage system power supply requirements.
  • the method in some embodiments of the present application may also include controlling the internal discharge of the BBU package when the system control signal is a BBU discharge control signal, eliminating error accumulation in the metering chip, and performing intelligent analysis and evaluation verification on the BBU power backup capability. learning process.
  • the processor can control the internal discharge of the BBU package, eliminate the error accumulation of the metering chip in the BBU package, and analyze and evaluate the power backup situation of the BBU package.
  • the method in some embodiments of the present application may also include detecting whether there are abnormal conditions based on the obtained circuit sampling information of the control circuit of the backup battery unit; wherein the abnormal conditions include abnormal packaging status of the BBU package, abnormal charging and discharge At least one of the exceptions; in response to the existence of the abnormal situation, adjust the control parameters corresponding to the abnormal results and repair the abnormal situation. That is to say, as shown in Figure 6, in this embodiment, the processor can use the abnormality diagnosis and repair subroutine to determine whether there are abnormal situations such as abnormal packaging status, abnormal charging, and abnormal discharge based on intelligent analysis of circuit sampling information.
  • the abnormal situation can be repaired by adjusting the corresponding charging and/or discharging control parameters; accordingly, if the abnormal situation cannot be repaired within the preset time period, abnormal alarm information can be output to prompt the user to handle the problem in a timely manner and it is difficult to automatically Fixed exception.
  • the processor can also detect whether there is a signal abnormality in the system control signal (such as abnormal signal quality, mistransmission or missing transmission, etc.); thus, when a signal abnormality is detected, the signal abnormality is detected. Repair, such as repairing signal anomalies through communication with the storage system.
  • the embodiment of the present application can control the BBU package to charge in multiple charging modes. And through the setting of the improved H-bridge charging unit in the BBU charging circuit, current backflow can be avoided during the charging process of the BBU package, improving the charging efficiency and reliability of the BBU package, so that the backup battery unit can provide Stable and reliable power supply.
  • a control device for a backup battery unit is also provided.
  • the control device for a backup battery unit described below is the same as the backup battery described above.
  • the control methods of the units can be referenced correspondingly.
  • FIG. 7 is a structural block diagram of a control device for a backup battery unit according to one or more embodiments. This method is applied to the control circuit of the backup battery unit provided in the above embodiment, and may include:
  • Signal acquisition module 100 used to acquire system control signals
  • the charging control module 200 is configured to respond to the system control signal as a BBU charging control signal, and control the charging mode of the BBU charging circuit in the control circuit of the backup battery unit according to the circuit sampling information of the control circuit of the backup battery unit; wherein the charging mode includes Precharge charging mode, constant current charging mode and constant voltage charging mode.
  • the device may also include: a model reading module (not shown in the figure) and a model judging module (not shown in the figure); wherein the model reading module is used on the system After the electrical or BBU package is inserted, the package model of the BBU package is read; the model judgment module is used to determine whether the package model matches the preset package signal. In response to the package model matching the preset package signal, the signal acquisition module 100 Send start signal.
  • the device may also include: an in-position detection module (not shown in the figure), used to determine whether the BBU package is in place according to the package in-position signal of the BBU package, and respond to the BBU package in-position signal. The package is in place and a start signal is sent to the signal acquisition module 100 .
  • an in-position detection module (not shown in the figure), used to determine whether the BBU package is in place according to the package in-position signal of the BBU package, and respond to the BBU package in-position signal. The package is in place and a start signal is sent to the signal acquisition module 100 .
  • the device may further include: a discharge control module (not shown in the figure), configured to provide the BBU discharge control signal in response to the system control signal, according to the full digital PID control algorithm, according to the sampling
  • the discharge output voltage and discharge output current in the BBU discharge circuit in the backup battery unit control circuit are adjusted to adjust the PID duty cycle to control the output voltage of the synchronous buck unit of the BBU discharge circuit at the preset voltage.
  • the device may further include: an abnormality diagnosis module (not shown in the figure) and an abnormality repair module (not shown in the figure).
  • the abnormality diagnosis module is used to detect whether There is an abnormal situation; wherein the abnormal situation includes at least one of abnormal packaging status of the BBU package, abnormal charging, and abnormal discharge; the abnormality repair module is used to respond to the existence of the abnormal situation, adjust the control parameters corresponding to the abnormal result, and respond to the abnormal situation Make repairs.
  • a storage system is also provided.
  • the storage system described below and the control method of a backup battery unit described above can be referred to in correspondence with each other. .
  • a storage system including: a memory, a processor, and a control circuit for a backup battery unit as provided in any of the above embodiments; wherein,
  • a processor configured to implement the steps of the control method for a backup battery unit as provided in any of the above embodiments when executing computer-readable instructions.
  • the processor in this embodiment may be a BBU control unit in the storage system.
  • the memory in this embodiment may include one or more storage media, and the storage media may be non-transitory. Memory may also include high-speed random access memory, and non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In this embodiment, the memory is at least used to store the following computer-readable instructions. After the computer-readable instructions are loaded and executed by the processor, the steps of the control method for the backup battery unit provided in any of the above embodiments can be implemented.
  • the resources stored in the memory may also include operating systems and data, and the storage method may be short-term storage or permanent storage.
  • the operating system can be Windows.
  • the data may include but is not limited to the data involved in the above methods.

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Abstract

本申请公开了一种备份电池单元的控制电路、方法、装置及存储系统，应用于存储技术领域，该控制电路包括：BBU充电电路；其中，BBU充电电路包括：改进型H桥充电单元；改进型H桥充电单元包括第一开关管、第二开关管、第三开关管、二极管和电感器；本申请通过BBU充电电路中的改进型H桥充电单元的设置，将充电与防倒灌电路相结合，使得BBU封装能够以多种充电模式进行充电，并且在BBU封装的充电过程中能够避免电流倒灌的情况发生，提高了BBU封装的充电效率和可靠性，从而使得备份电池单元能够提供稳定可靠的供电，保证了存储系统的可靠性。

Description

一种备份电池单元的控制电路、方法、装置及存储系统
相关申请的交叉引用
本申请要求于2022年03月31日提交中国专利局，申请号为202210334030.0，申请名称为“一种备份电池单元的控制电路、方法、装置及存储系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及存储技术领域，特别涉及一种备份电池单元的控制电路、方法、装置及存储系统。
背景技术
在大数据时代，对存储阵列可靠性提出更高要求，尤其是对于存储系统的供电稳定性要求；目前，通常采用封装(PACK)的备份电池单元(BBU，Backup Battery Unit)的设置，以在外部电源断电时为存储系统的供电单元(PSU，Power Supply Unit)提供电能，避免外部电源断电导致的数据丢失，提高存储系统的供电可靠性。
发明人意识到，如何能够提高备份电池单元的充放电的可靠性，从而保证备份电池单元能够提供稳定可靠的供电，是现今急需解决的问题。
发明内容
根据本申请公开的各种实施例，提供一种备份电池单元的控制电路、方法、装置及存储系统。
一种备份电池单元的控制电路，包括：BBU充电电路；其中，所述BBU充电电路包括：改进型H桥充电单元；所述改进型H桥充电单元包括第一开关管、第二开关管、第三开关管、二极管和电感器；所述第一开关管的第一端用于与充电电源的输入端连接，所述第一开关管的第二端分别与所述电感器的第一端和所述二极管的阴极连接，所述电感器的第二端分别与所述第二开关管的第一端和所述第三开关管的第二端连接，所述第二开关管的第二端用于与BBU封装的输入端连接，所述二极管的阳极和所述第三开关管的第一端接地，所述第一开关管、所述第二开关管和所述第三开关管的控制端与BBU控 制单元连接，用于根据所述BBU控制单元的控制切换所述BBU的充电模式；所述充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
一种备份电池单元的控制方法，应用于如上述所述的备份电池单元的控制电路，包括：获取系统控制信号；和响应于所述系统控制信号为BBU充电控制信号，根据所述备份电池单元的控制电路的电路采样信息，控制所述备份电池单元的控制电路中的BBU充电电路的充电模式；其中，所述充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
一种备份电池单元的控制装置，应用于如上述所述的备份电池单元的控制电路，包括：信号获取模块，用于获取系统控制信号；和电路控制模块，用于响应于所述系统控制信号为BBU充电控制信号，则根据所述备份电池单元的控制电路的电路采样信息，控制所述备份电池单元的控制电路中的BBU充电电路的充电模式；其中，所述充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
一种存储系统，包括：存储器和处理器以及如上述所述的备份电池单元的控制电路；其中，所述存储器，用于存储计算机可读指令；所述处理器，用于执行所述计算机可读指令时实现如上述所述的备份电池单元的控制方法的步骤。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为根据一个或多个实施例中备份电池单元的控制电路中的BBU充电电路的电路示意图；
图2为根据一个或多个实施例中备份电池单元的控制电路中的BBU放电电路的电路示意图；
图3为根据一个或多个实施例中备份电池单元的控制电路中的封装端热插拔防护电路的电路示意图；
图4为根据一个或多个实施例中备份电池单元的控制电路中的系统端热插拔防护电路的电路示意图；
图5为根据一个或多个实施例中备份电池单元的控制方法的流程示意图；
图6为根据一个或多个实施例中种备份电池单元的控制方法的流程示意图；
图7为根据一个或多个实施例中备份电池单元的控制装置的结构框图；
图8为根据一个或多个实施例中存储系统的结构示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，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，都属于本申请保护的范围。
请参考图1，图1为根据一个或多个实施例中的备份电池单元的控制电路中的BBU充电电路的电路示意图。该备份电池单元的控制电路可以包括：BBU充电电路；其中，BBU充电电路可以包括：改进型H桥充电单元10；改进型H桥充电单元10包括第一开关管Q5、第二开关管Q4、第三开关管Q3、二极管D1和电感器L1；第一开关管Q5的第一端用于与充电电源的输入端连接，第一开关管Q5的第二端分别与电感器L1的第一端和二极管D1的阴极连接，电感器L1的第二端分别与第二开关管Q4的第一端和第三开关Q3管的第二端连接，第二开关管Q4的第二端用于与BBU封装的输入端连接，二极管D1的阳极和第三开关管Q3的第一端接地，第一开关管Q5、第二开关管Q4和第三开关管Q3的控制端与BBU控制单元连接，用于根据BBU控制单元的控制切换BBU的充电模式，充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
可以理解的是，本实施例中的BBU封装(BBU PACK)可以为封装的备份电池单元的电池组。本实施例中备份电池单元的控制电路中的BBU充电电路可以为用于利用充电电源(如恒压源)输出的电能对BBU封装进行充电的电路。本实施例中通过BBU充电电路中改进型H桥充电单元10的设置，使得BBU充电电路可以根据BBU控制单元的控制，以预充充电模式、恒流充电模式和恒压充电模式这三种充电模式对BBU封装进行充电，保证了BBU封装的充电效率；并且能够避免电流倒灌的情况发生，保证了BBU封装的充电的可靠性。
具体的，如图1所示，改进型H桥充电单元10可以包括第一开关管Q5、第二开关 管Q4、第三开关管Q3、二极管D1和电感器L1；第一开关管Q5的第一端用于与充电电源的输入端PSU12VIN连接，第一开关管Q5的第二端分别与电感器L1的第一端和二极管D1的阴极连接，电感器L1的第二端分别与第二开关管Q4的第一端和第三开关管Q3的第二端连接，第二开关管Q4的第二端用于与BBU封装的输入端PACK+连接，二极管D1的阳极和第三开关管Q3的第一端接地，第一开关管Q5、第二开关管Q4和第三开关管Q3的控制端与BBU控制单元连接，用于根据BBU控制单元的控制切换BBU的充电模式；如BBU控制单元可以控制改进型H桥充电单元10切换到BUCK(降压电路)对BBU封装进行预充充电，或者切换到BUCK-BOOST(降压-升压电路)对BBU封装进行恒流充电，或者切换到BOOST(升压电路)对BBU封装进行恒压充电。
对应的，如图1所示，第一开关管Q5可以具体为PMOS管，即第一开关管Q5的源极用于与充电电源的输入端PSU12VIN连接，第一开关管Q5的漏极分别与电感器L1的第一端和二极管D1的阴极连接，第一开关管Q5的栅极用于与BBU控制单元的一个控制信号PWM2的输出端连接；第二开关管Q4和第三开关管Q3可以具体为NMOS管，即第二开关管Q4的源极可以与第三开关管Q3的漏极连接，第二开关管Q4的漏极用于与BBU封装的输入端连接，第三开关管Q3的源极接地，第二开关管Q4和第三开关管Q3的栅极用于与BBU控制单元的各自对应的控制信号PWM3、PWM4的输出端连接；相应的，如图1所示，第一开关管Q5、第二开关管Q4和第三开关管Q3的控制端可以通过各自对应的电阻R9、R8、R7与BBU控制单元中相应的控制信号PWM2、PWM3、PWM4的输入端连接。
在本申请的某些实施例中，如图1所示，本实施例中的BBU充电电路还可以包括充电输入保护单元20，用于提供BBU充电电路的充电输入电压采样点和充电输入电流采样点，并根据相应控制器的控制，导通或关断改进型H桥充电单元10与充电电源之间的连接；其中，第一开关管Q5的第一端用于通过充电输入保护单元20与充电电源的输入端连接。也就是说，充电输入保护单元20可以根据相应控制器(如热插拔控制器或BBU控制单元)的控制，在充电输入电压和充电输入电流异常时，关断改进型H桥充电单元与充电电源之间的连接，从而防止充电异常影响存储系统正常供电。
在本申请的某些实施例中，如图1所示，充电输入保护单元20可以包括：第一电阻R13、第二电阻R10、第三电阻R11和第四开关管Q1；其中，第一电阻R13的第一端与第二电阻R10的第一端连接，第一电阻R13和第二电阻R10的公共端用于与充电电源的输入端PSU12VIN连接；第二电阻R10的第二端与第三电阻R11的第一端连接，第二电阻R10和第三电阻R11的公共端作为充电输入电压采样点VSENS；第三电阻R11的第二 端接地，第一电阻R13的第二端与第四开关管Q1的第一端连接，第四开关管Q1的第二端与第一开关管Q5的第一端连接；第一电阻R13的第一端和第二端作为充电输入电流采样点ISENS；第四开关管Q1的控制端用于与相应控制器连接。如图1所示，第四开关管Q1可以具体为NMOS管，第四开关管Q1的控制端(即栅极)通过对应的电阻R12与相应控制器中相应的控制信号PWM1的输入端连接。
在本申请的某些实施例中，本申请所提供的备份电池单元的控制电路还可以包括：与第四开关管Q1的控制端连接的热插拔控制器，如TPS247XX系列的热插拔控制器，用于利用充电输入电压采样点VSENS和充电输入电流采样点ISENS处采样得到的充电输入电压和充电输入电流，控制充电输入保护单元20导通或关断改进型H桥充电单元10与充电电源之间的连接。
在本申请的某些实施例中，如图1所示，BBU充电电路还可以包括充电输出保护单元30，用于提供BBU充电电路的充电输出电压采样点CVSENS、充电输出电流采样点CISENS和BBU封装电压采样点PACKSENS，并根据相应控制器的控制，导通或关断改进型H桥充电单元10与BBU封装之间的连接；其中，第二开关管Q4的第二端用于通过充电输出保护单元30与BBU封装的输入端连接。也就是说，充电输出保护单元30可以根据相应控制器(如充电输出保护MCU或BBU控制单元)的控制，在充电输出电压、充电输出电流或PACK状态异常时，关断进型H桥充电单元与BBU封装之间的连接，从而防止充电异常对BBU封装的电芯寿命的影响。
在本申请的某些实施例中，如图1所示，充电输出保护单元30可以包括：第四电阻R6、第五电阻R5、第六电阻R4、第七电阻R2、第八电阻R1和第八开关管Q2；其中，第四电阻R6的第一端用于与改进型H桥充电单元10的输出端连接；第四电阻R6的第二端与第五电阻R5的第一端连接，第四电阻R6和第五电阻R5的公共端与第八开关管Q2的第二端连接；第五电阻R5的第二端与第六电阻R4的第一端连接，第五电阻R5和第六电阻R4的公共端作为充电输出电压采样点CVSENS；第八开关管Q2的第一端与第七电阻R2的第一端连接，第八开关管Q2和第七电阻R2的公共端用于BBU封装的输入端连接；第七电阻R2的第二端与第八电阻R1的第一端连接，第七电阻R2和第八电阻R1的公共端作为BBU封装电压采样点PACKSENS；第四电阻R6的第一端和第二端作为充电输出电流采样点CISENS；第六电阻R4的第二端和第八电阻R1的第二端均接地。如图1所示，第八开关管R1可以具体为PMOS管，第八开关管R1的控制端(即栅极)通过对应的电阻R3与相应控制器中相应的控制信号PWM5的输入端连接。
在本申请的某些实施例中，如图1所示，改进型H桥充电单元10的输入端和输出端 可以分别并联电容器C3、C1和电解电容C4、C2，以提升输入电压和输出电压的稳定性。
在本申请的某些实施例中，备份电池单元的控制电路还可以包括BBU放电电路，用于利用BBU封装输出的电能对目标设备(如PSU)进行供电。具体的，BBU放电电路可以包括同步降压单元，用于根据BBU控制单元的控制将BBU封装输出的电能减低到预设电压并输出到目标设备。如图2所示，同步降压单元包括第五开关管Q4、第六开关管Q3和第七开关管Q2；其中，第五开关管Q4的第二端与第六开关管Q3的第二端连接，第五开关管Q4和第六开关管Q3的公共端用于与BBU封装的放电输出端PACK+连接；第五开关管Q4的第一端和第六开关管Q3的第一端均与第七开关管Q2的第二端连接，第五开关管Q4和第六开关管Q3的公共端用于与目标设备的供电输入端B+连接；第七开关管Q2的第一端接地，第五开关管Q4、第六开关管Q3和第七开关管Q2的控制端与BBU控制单元连接，用于根据BBU控制单元的控制调整预设电压；例如BBU控制单元可以根据BBU封装的输出电压和同步降压单元的输出电压，利用全数字PID控制算法，调整第五开关管Q4、第六开关管Q3和第七开关管Q2对应的PWM信号(如图2中的PWM6和PWM7)的占空比；如图2所示，第五开关管Q4、第六开关管Q3和第七开关管Q2均可以具体为NMOS管，保证同步降压单元的输出电压恒定11.5V(即预设电压)，保证备份供电冷备和热备能够自动切换。如图2所示，同步降压单元还可以包括滤波电感器L1，第五开关管Q4的源极、第六开关管Q3的源极和第七开关管Q2的漏极相连的公共端可以通过滤波电感器L1与目标设备连接。
在本申请的某些实施例中，BBU放电电路还可以包括防倒灌单元，用于提供同步降压单元的放电输出电压采样点(如图2中的VSENS)和放电输出电流采样点(如图2中的ISENS)，根据相应控制器的控制，导通或关断将同步降压单元与目标设备之间的连接；其中，同步降压单元的输出端通过防倒灌单元与目标设备连接。如图2所示，防倒灌单元可以包括：第九电阻R1、第十电阻R7、第十一电阻R6和第九开关管Q1；其中，第九电阻R1的第一端用于与同步降压单元的输出端连接；第九电阻R1的第二端分别与第十电阻R7的第一端和第九开关Q1的第一端连接；第十电阻R7的第二端与第十一电阻R6的第一端连接，第十电阻R7和第十一电阻R6的公共端作为放电输出电压采样点VSENS；第九开关管Q1的第二端用于与目标设备连接；第九电阻R1的两端作为放电输出电流采样点ISENS；第十一电阻R6的第二端接地，第九开关管Q1的控制端用于与相应控制器中相应的控制信号PWM8的输入端连接。
在本申请的某些实施例中，备份电池单元的控制电路还可以包括设置在BBU控制单 元与BBU封装之间的第一目标接口信号的连接之间的封装端热插拔防护电路，用于对BBU控制单元于BBU封装之间的第一目标接口信号进行静电及热插拔防护；其中，第一目标接口信号可以包括BBU在位信号、系统在位信号、I2C时钟信号和I2C数据信号中的至少一种，如图3所示，第一目标接口信号可以包括BBU在位信号PACK_BBUPRE1、系统在位信号PACK_SYSPRE1、I2C时钟信号PACK_SCL1和I2C数据信号PACK_SDA1。
在本申请的某些实施例中，如图3所示，每个封装端热插拔防护电路均可以包括：第一串接电阻和第一双向晶闸管；第一串接电阻的第一端与BBU控制单元中对应的第一目标接口信号的管脚连接；第一串接电阻的第二端与第一双向晶闸管的第一端连接，第一串接电阻和第一双向晶闸管的公共端与BBU封装中对应的第一目标接口信号的管脚连接；第一双向晶闸管的第二端接地；也就是说，通过封装端热插拔防护电路中的第一双向晶闸管的设置进行TVS(Transient Voltage Suppressor，瞬态二极管)防护，防止BBU封装的热插拔过程或静电损坏芯片对应的管脚；通过第一串接电阻的设置，防止电压尖峰时损坏印制板铜钷。
在本申请的某些实施例中，备份电池单元的控制电路还可以包括设置在BBU控制单元与系统端之间的第二目标接口信号的连接之间的系统端热插拔防护电路；其中，第二目标接口信号包括BBU充电使能信号、BBU放电使能信号、BBU在位信号、系统在位信号、BBU内部放电使能信号、系统I2C时钟信号和系统I2C数据信号中的至少一种；如图4所示，第二目标接口信号包括BBU充电使能信号BBU_CHG、BBU放电使能信号BBU_DIS、BBU在位信号BBU_PRE、系统在位信号SYS_PRE、BBU内部放电使能信号BBU_TEST、系统I2C时钟信号BBU_SCL和系统I2C数据信号BBU_SDA。
在本申请的某些实施例中，如图4所示，每个系统端热插拔防护电路均可以包括：第二串接电阻和第二双向晶闸管；第二串接电阻的第一端与系统端中对应的第二目标接口信号的管脚连接；第二串接电阻的第二端与第二双向晶闸管的第一端连接，第二串接电阻和第二双向晶闸管的公共端与BBU控制单元中对应的第二目标接口信号的管脚连接；第二双向晶闸管的第二端接地。也就是说，通过系统端热插拔防护电路中的第二双向晶闸管的设置进行TVS(Transient Voltage Suppressor，瞬态二极管)防护，防止BBU控制板的热插拔过程或静电损坏芯片对应的管脚；通过第二串接电阻的设置，防止电压尖峰时损坏印制板铜钷。
这些实施例中，通过BBU充电电路中的改进型H桥充电单元10的设置，将充电与防倒灌电路相结合，BBU封装能够以多种充电模式进行充电，并且在BBU封装的充电过 程中能够避免电流倒灌的情况发生，提高了BBU封装的充电效率和可靠性，从而使得备份电池单元能够提供稳定可靠的供电。
相应于上面的备份电池单元的控制电路实施例，在本申请的某些实施例中，还提供了一种备份电池单元的控制方法，下文描述的一种备份电池单元的控制方法与上文描述的一种备份电池单元的控制电路可相互对应参照。
请参考图5，图5为根据一个或多个实施例中的备份电池单元的控制方法的流程图。该方法应用于上述实施例所提供的备份电池单元的控制电路，可以包括：
步骤101：获取系统控制信号。
可以理解的是，本实施例中的系统控制信号可以为系统端(如存储系统、服务器或大型计算机)向处理器(如BBU控制单元)传输的用于控制BBU封装的充放电的信号。对于本实施例中系统控制信号的具体数量和类型，可以由设计人员根据实用场景和用户需求自行设置，如系统控制信号可以包括用于控制BBU封装充电的BBU充电控制信号，即处理器可以根据获取的BBU充电控制信号，对BBU封装进行充电控制；系统控制信号也可以包括用于控制对BBU封装放电的BBU放电控制信号，即处理器可以根据获取的BBU放电控制信号，对BBU封装进行放电控制；系统控制信号还可以包括用于控制BBU封装的内部放电的校验学习信号，即处理器可以根据获取的BBU充电控制信号，对BBU封装的内部放电进行控制，以消除BBU封装内计量芯片的误差累积，还可以进一步分析评估BBU封装的备电能力。
在本申请的某些实施例中，处理器在获取系统控制信号之前，还可以在系统上电或检测到BBU封装插入时，读取BBU封装的封装(PACK)型号、状态和关键参数等信息，以判定BBU封装的PACK型号是否匹配以及BBU封装是否存在异常等情况，从而在PACK型号匹配且性能正常时，控制BBU封装正常工作；如图6所示，处理器可以利用通讯控制子程序，在PACK型号匹配时，根据需求切换通信链路，通过SMBUS(System Management Bus,系统管理总线)通信完成主从设备自动切换，并且控制BBU封装正常工作。也就是说，本实施例中处理器在获取系统控制信号之前，可以在系统上电或BBU封装插入后，读取BBU封装的封装型号；判断封装型号是否与预设封装信号相匹配；响应于封装型号与预设封装信号相匹配，执行获取系统控制信号的步骤；响应于封装型号与预设封装信号不相匹配，可以直接结束本流程或输出BBU封装的封装型号匹配异常信息，以提示用户更换调整BBU封装。
进一步的，本实施例中处理器在获取系统控制信号之前，还可以对BBU封装是否在 位进行侦测，以判定BBU封装是否存在插拔动作，从而在BBU封装在位时，控制BBU封装正常工作。如图6所示，处理器可以在PACK型号匹配时，通过扫描子程序扫描BBU封装的封装(PACK)在位信号，判定BBU封装是否存在插拔动作，从而在BBU封装在位，即BBU封装插入时，控制BBU封装正常工作。也就是说，本实施例中处理器在获取系统控制信号之前，根据BBU封装的封装在位信号，判断BBU封装是否在位；响应于BBU封装在位，执行获取系统控制信号的步骤；响应于BBU封装不在位，可以直接结束本流程或继续扫描BBU封装的封装在位信号。
具体的，本实施例中处理器在获取系统控制信号的同时，还可以获取相应的控制参数信息，如图6所示，本步骤中处理器可以通过系统通讯子程序，接收存储系统的系统控制信号以及控制参数信息(如充电参数设定值)，以使处理器可以利用控制参数信息和电路采样信息，控制备份电池单元的控制电路，以保证BBU封装的正常工作。
步骤102：响应于系统控制信号为BBU充电控制信号，根据备份电池单元的控制电路的电路采样信息，控制备份电池单元的控制电路中的BBU充电电路的充电模式；其中，充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
可以理解的是，本实施例中处理器可以在系统控制信号为BBU充电控制信号时，根据从备份电池单元的控制电路采样的电路采样信息，控制切换BBU充电电路的充电模式，从而按切换的充电模式对BBU封装进行充电；例如，处理器可以利用采样子程序，对BBU封装电压、存储系统供电电压、充电输入电流、充电输出电压、充电输出电流、放电输出电压和放电输出电流等电路采样信息进行采样存储；本步骤中处理器可以根据电路采样信息中BBU封装电压与充电输出电压之间的电压差，控制切换BBU充电电路的充电模式。
在本申请的某些实施例中的方法还可以包括在系统控制信号为BBU放电控制信号时，控制备份电池单元的控制电路中的BBU放电电路，利用BBU封装的放电按预设电压对目标设备(如PSU)进行供电的过程，例如，响应于系统控制信号为BBU放电控制信号，处理器可以根据利用全数字PID控制算法，根据采样的备份电池单元的控制电路中的BBU放电电路中的放电输出电压和放电输出电流，调整PID占空比，将BBU放电电路的同步降压单元的输出电压控制在预设电压。如图6所示，处理器可以采用放电控制子程序，根据电路采样信息中放电输出电压和放电输出电流对应的采样分析结果，通过全数字PID控制算法，调整PID占空比，将BBU放电电路的输出电压控制在预设电压(如11.5V)，以保证BBU封装可以根据存储系统供电需求，完成冷备份供电和热备份供电自动切换。
在本申请的某些实施例中的方法还可以包括在系统控制信号为BBU放电控制信号时，控制BBU封装的内部放电，消除计量芯片误差累积，对BBU备电能力进行智能分析评估的校验学习过程。例如，响应于系统控制信号为校验学习信号，处理器可以对BBU封装的内部放电进行控制，消除BBU封装内计量芯片的误差累积，并且分析评估BBU封装的备电情况。
在本申请的某些实施例中的方法还可以包括根据获取的备份电池单元的控制电路的电路采样信息，检测是否存在异常情况；其中，异常情况包括BBU封装的封装状态异常、充电异常和放电异常中的至少一项；响应于存在异常情况，调整异常结果对应的控制参数，对异常情况进行修复。也就说是，如图6所示，本实施例中处理器可以利用异常诊断修复子程序，根据对电路采样信息的智能分析，判定是否存在封装状态异常、充电异常和放电异常等异常情况，从而根据判定的异常情况，通过调整相应的充电和/或放电控制参数，修复异常情况；相应的，预设时间段内未能修复异常情况，可以输出异常告警信息，以提示用户及时处理难以自动修复的异常情况。对应的，本实施例中处理器还可以检测系统控制信号是否存在信号异常情况(如信号质量异常、误发或漏发等情况)；从而在检测到存在信号异常情况时，对信号异常情况进行修复，如通过与存储系统的通信，修复信号异常情况。
本实施例中，本申请实施例通过根据备份电池单元的控制电路的电路采样信息，控制备份电池单元的控制电路中的BBU充电电路的充电模式，可以控制BBU封装以多种充电模式进行充电，并且通过BBU充电电路中的改进型H桥充电单元的设置，能够在BBU封装的充电过程中能够避免电流倒灌的情况发生，提高了BBU封装的充电效率和可靠性，从而使得备份电池单元能够提供稳定可靠的供电。
相应于上面的方法实施例，在本申请的某些实施例中，还提供了一种备份电池单元的控制装置，下文描述的一种备份电池单元的控制装置与上文描述的一种备份电池单元的控制方法可相互对应参照。
请参考图7，图7为根据一个或多个实施例中的备份电池单元的控制装置的结构框图。该方法应用于上述实施例所提供的备份电池单元的控制电路，可以包括：
信号获取模块100，用于获取系统控制信号；和
充电控制模块200，用于响应系统控制信号为BBU充电控制信号，根据备份电池单元的控制电路的电路采样信息，控制备份电池单元的控制电路中的BBU充电电路的充电模式；其中，充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
在本申请的某些实施例中，该装置还可以包括：型号读取模块(图中未示出)和型号判断模块(图中未示出)；其中，型号读取模块，用于系统上电或BBU封装插入后，读取BBU封装的封装型号；型号判断模块，用于判断封装型号是否与预设封装信号相匹配，响应于封装型号与预设封装信号相匹配，向信号获取模块100发送启动信号。
在本申请的某些实施例中，该装置还可以包括：在位侦测模块(图中未示出)，用于根据BBU封装的封装在位信号，判断BBU封装是否在位，响应于BBU封装在位，向信号获取模块100发送启动信号。
在本申请的某些实施例中，该装置还可以包括：放电控制模块(图中未示出)，用于响应于系统控制信号为BBU放电控制信号，根据利用全数字PID控制算法，根据采样的备份电池单元的控制电路中的BBU放电电路中的放电输出电压和放电输出电流，调整PID占空比，将BBU放电电路的同步降压单元的输出电压控制在预设电压。
在本申请的某些实施例中，该装置还可以包括：异常诊断模块(图中未示出)和异常修复模块(图中未示出)，异常诊断模块用于根据电路采样信息，检测是否存在异常情况；其中，异常情况包括BBU封装的封装状态异常、充电异常和放电异常中的至少一项；异常修复模块，用于响应于存在异常情况，调整异常结果对应的控制参数，对异常情况进行修复。
本实施例中，本申请实施例通过充电控制模块200根据备份电池单元的控制电路的电路采样信息，控制备份电池单元的控制电路中的BBU充电电路的充电模式，可以控制BBU封装以多种充电模式进行充电，并且通过BBU充电电路中的改进型H桥充电单元的设置，能够在BBU封装的充电过程中能够避免电流倒灌的情况发生，提高了BBU封装的充电效率和可靠性，从而使得备份电池单元能够提供稳定可靠的供电。
相应于上面的方法实施例，在本申请的某些实施例中，还提供了一种存储系统，下文描述的一种存储系统与上文描述的一种备份电池单元的控制方法可相互对应参照。
一种存储系统，包括：存储器、处理器以及如上述任意一个实施例所提供的备份电池单元的控制电路；其中，
存储器，用于存储计算机可读指令；
处理器，用于执行计算机可读指令时实现如上述任意一个实施例所提供的备份电池单元的控制方法的步骤。
其中，本实施例中的处理器可以为存储系统中的BBU控制单元。本实施例中的存储器可以包括一个或多个存储介质，该存储介质可以是非暂态的。存储器还可包括高速随 机存取存储器，以及非易失性存储器，比如一个或多个磁盘存储设备、闪存存储设备。本实施例中，存储器至少用于存储以下计算机可读指令，其中，该计算机可读指令被处理器加载并执行之后，能够实现上述任意一个实施例所提供的备份电池单元的控制方法的步骤。另外，存储器所存储的资源还可以包括操作系统和数据等，存储方式可以是短暂存储或者永久存储。其中，操作系统可以为Windows。数据可以包括但不限于上述方法所涉及到的数据。
说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置、存储系统而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。
以上对本申请所提供的一种备份电池单元的控制电路、方法、装置及存储系统进行了详细介绍。本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以对本申请进行若干改进和修饰，这些改进和修饰也落入本申请权利要求的保护范围内。

Claims (20)

  1. 一种备份电池单元的控制电路，其特征在于，包括：BBU充电电路；其中，所述BBU充电电路包括：改进型H桥充电单元；所述改进型H桥充电单元包括第一开关管、第二开关管、第三开关管、二极管和电感器；所述第一开关管的第一端用于与充电电源的输入端连接，所述第一开关管的第二端分别与所述电感器的第一端和所述二极管的阴极连接，所述电感器的第二端分别与所述第二开关管的第一端和所述第三开关管的第二端连接，所述第二开关管的第二端用于与BBU封装的输入端连接，所述二极管的阳极和所述第三开关管的第一端接地，所述第一开关管、所述第二开关管和所述第三开关管的控制端与BBU控制单元连接，用于根据所述BBU控制单元的控制切换所述BBU的充电模式；所述充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
  2. 根据权利要求1或2所述的备份电池单元的控制电路，其特征在于，所述第一开关管、所述第二开关管和所述第三开关管用于根据所述BBU控制单元的控制，在所述充电模式为所述预充充电模式时，将所述改进型H桥充电单元切换为降压电路，在所述充电模式为所述恒流充电模式时，将所述改进型H桥充电单元切换为降压-升压电路，在所述充电模式为所述恒压充电模式时，将所述改进型H桥充电单元切换为升压电路。
  3. 根据权利要求1或2所述的备份电池单元的控制电路，其特征在于，所述BBU充电电路，还包括：
    充电输入保护单元，用于提供所述BBU充电电路的充电输入电压采样点和充电输入电流采样点，并根据相应控制器的控制，导通或关断所述改进型H桥充电单元与所述充电电源之间的连接；其中，所述第一开关管的第一端用于通过所述充电输入保护单元与所述充电电源的输入端连接。
  4. 根据权利要求3所述的备份电池单元的控制电路，其特征在于，还包括：
    热插拔控制器，用于利用所述充电输入电压采样点和所述充电输入电流采样点处采样得到的充电输入电压和充电输入电流，控制所述充电输入保护单元导通或关断所述改进型H桥充电单元与所述充电电源之间的连接。
  5. 根据权利要求3所述的备份电池单元的控制电路，其特征在于，所述充电输入保护单元包括：第一电阻、第二电阻、第三电阻和第四开关管；
    其中，所述第一电阻的第一端与所述第二电阻的第一端连接，其公共端用于与所述充电电源的输入端连接；所述第二电阻的第二端与所述第三电阻的第一端连接，其公共端作为所述充电输入电压采样点；所述第三电阻的第二端接地，所述第一电阻的第二端 与所述第四开关管的第一端连接，所述第四开关管的第二端与所述第一开关管的第一端连接；所述第一电阻的第一端和第二端作为所述充电输入电流采样点；所述第四开关管的控制端用于与相应控制器连接。
  6. 根据权利要求1至5任一项所述的备份电池单元的控制电路，其特征在于，所述BBU充电电路，还包括：
    充电输出保护单元，用于提供所述BBU充电电路的充电输出电压采样点、充电输出电流采样点和BBU封装电压采样点，并根据相应控制器的控制，导通或关断所述改进型H桥充电单元与所述BBU封装之间的连接；其中，所述第二开关管的第二端用于通过所述充电输出保护单元与所述BBU封装的输入端连接。
  7. 根据权利要求1至6任一项所述的备份电池单元的控制电路，其特征在于，还包括：设置在所述BBU控制单元与所述BBU封装之间的第一目标接口信号的连接之间的封装端热插拔防护电路；其中，所述第一目标接口信号包括BBU在位信号、系统在位信号、I2C时钟信号和I2C数据信号中的至少一种；
    每个所述封装端热插拔防护电路均包括：第一串接电阻和第一双向晶闸管；所述第一串接电阻的第一端与所述BBU控制单元中对应的第一目标接口信号的管脚连接；所述第一串接电阻的第二端与所述第一双向晶闸管的第一端连接，其公共端与所述BBU封装中对应的第一目标接口信号的管脚连接；所述第一双向晶闸管的第二端接地。
  8. 根据权利要求1至7任一项所述的备份电池单元的控制电路，其特征在于，还包括：设置在所述BBU控制单元与系统端之间的第二目标接口信号的连接之间的系统端热插拔防护电路；其中，所述第二目标接口信号包括BBU充电使能信号、BBU放电使能信号、BBU在位信号、系统在位信号、BBU内部放电使能信号、系统I2C时钟信号和系统I2C数据信号中的至少一种；
    每个所述系统端热插拔防护电路均包括：第二串接电阻和第二双向晶闸管；所述第二串接电阻的第一端与所述系统端中对应的第二目标接口信号的管脚连接；所述第二串接电阻的第二端与所述第二双向晶闸管的第一端连接，其公共端与所述BBU控制单元中对应的第二目标接口信号的管脚连接；所述第二双向晶闸管的第二端接地。
  9. 根据权利要求1至8任一项所述的备份电池单元的控制电路，其特征在于，还包括：BBU放电电路；
    其中，所述BBU放电电路包括：同步降压单元，用于根据所述BBU控制单元的控制将所述BBU封装输出的电能减低到预设电压并输出到目标设备。
  10. 根据权利要求9所述的备份电池单元的控制电路，其特征在于，所述BBU放电 电路还包括：
    防倒灌单元，用于提供所述同步降压单元的放电输出电压采样点和放电输出电流采样点，根据相应控制器的控制，导通或关断将所述同步降压单元与所述目标设备之间的连接。
  11. 根据权利要求9或10所述的备份电池单元的控制电路，其特征在于，所述同步降压单元包括第五开关管、第六开关管和第七开关管；其中，所述第五开关管的第二端与所述第六开关管的第二端连接，其公共端用于与BBU封装的放电输出端连接；所述第五开关管的第一端和所述第六开关管的第一端均与所述第七开关管的第二端连接，其公共端用于与所述目标设备连接；所述第七开关管的第一端接地，所述第五开关管、所述第六开关管和所述第七开关管的控制端与所述BBU控制单元连接，用于根据所述BBU控制单元的控制调整所述预设电压。
  12. 一种备份电池单元的控制方法，其特征在于，应用于如权利要求1至11任一项所述的备份电池单元的控制电路，包括：
    获取系统控制信号；和
    响应于所述系统控制信号为BBU充电控制信号，根据所述备份电池单元的控制电路的电路采样信息，控制所述备份电池单元的控制电路中的BBU充电电路的充电模式；其中，所述充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
  13. 根据权利要求12所述的备份电池单元的控制方法，其特征在于，所述获取系统控制信号之前，还包括：
    系统上电或所述BBU封装插入后，读取所述BBU封装的封装型号；
    判断所述封装型号是否与预设封装信号相匹配；和
    响应于所述封装型号与预设封装信号相匹配，执行所述获取系统控制信号的步骤。
  14. 根据权利要求13所述的备份电池单元的控制方法，其特征在于，还包括：
    响应于所述封装型号与预设封装信号不相匹配，结束流程或输出BBU封装的封装型号匹配异常信息。
  15. 根据权利要求12至14任一项所述的备份电池单元的控制方法，其特征在于，所述获取系统控制信号之前，还包括：
    根据所述BBU封装的封装在位信号，判断所述BBU封装是否在位；和
    响应于所述BBU封装在位，执行所述获取系统控制信号的步骤。
  16. 根据权利要求15所述的备份电池单元的控制方法，其特征在于，还包括：
    响应于所述BBU封装不在位，结束流程或继续扫描BBU封装的封装在位信号。
  17. 根据权利要求12至16任一项所述的备份电池单元的控制方法，其特征在于，还包括：
    响应于所述系统控制信号为BBU放电控制信号，根据利用全数字PID控制算法，根据采样的所述备份电池单元的控制电路中的BBU放电电路中的放电输出电压和放电输出电流，调整PID占空比，将所述BBU放电电路的同步降压单元的输出电压控制在预设电压。
  18. 根据权利要求12至17任一项所述的备份电池单元的控制方法，其特征在于，还包括：
    根据所述电路采样信息，检测是否存在异常情况；其中，所述异常情况包括所述BBU封装的封装状态异常、充电异常和放电异常中的至少一项；和
    响应于存在所述异常情况，调整所述异常情况对应的控制参数，对所述异常情况进行修复。
  19. 一种备份电池单元的控制装置，其特征在于，应用于如权利要求1至11任一项所述的备份电池单元的控制电路，包括：
    信号获取模块，用于获取系统控制信号；和
    电路控制模块，用于响应于所述系统控制信号为BBU充电控制信号，根据所述备份电池单元的控制电路的电路采样信息，控制所述备份电池单元的控制电路中的BBU充电电路的充电模式；其中，所述充电模式包括预充充电模式、恒流充电模式和恒压充电模式。
  20. 一种存储系统，其特征在于，包括：存储器、处理器以及如权利要求1至11任一项所述的备份电池单元的控制电路；其中，
    所述存储器，用于存储计算机可读指令；
    所述处理器，用于执行所述计算机可读指令时实现如权利要求12至18任一项所述的备份电池单元的控制方法的步骤。
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