WO2012043589A1 - Dispositif de blocs d'alimentation - Google Patents

Dispositif de blocs d'alimentation Download PDF

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Publication number
WO2012043589A1
WO2012043589A1 PCT/JP2011/072123 JP2011072123W WO2012043589A1 WO 2012043589 A1 WO2012043589 A1 WO 2012043589A1 JP 2011072123 W JP2011072123 W JP 2011072123W WO 2012043589 A1 WO2012043589 A1 WO 2012043589A1
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WO
WIPO (PCT)
Prior art keywords
power supply
circuit
supply unit
power
detection circuit
Prior art date
Application number
PCT/JP2011/072123
Other languages
English (en)
Japanese (ja)
Inventor
隆司 小原
宗弘 安庭
Original Assignee
三洋電機株式会社
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Filing date
Publication date
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2012043589A1 publication Critical patent/WO2012043589A1/fr

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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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
    • 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
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0018—Circuits for equalisation of charge between batteries using separate charge 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a power supply apparatus in which batteries of a plurality of power supply units are connected in series to increase the output voltage, and in particular, charging / discharging is controlled while the state of the battery constituting the battery block is detected by the power supply unit. It is related with the power supply unit.
  • a high-output power supply device for example, a power supply device that supplies power to a vehicle running motor, has a high output voltage by connecting rechargeable batteries in series.
  • a high-output power supply device used for an electric vehicle has an output voltage as high as about 100 to 350 V so that the vehicle can be accelerated or can be driven with electric power.
  • a power supply apparatus in which a large number of batteries are connected in series can have a structure in which the entire battery is divided into a plurality of power supply units, and the batteries of the power supply units are connected in series to increase the output voltage.
  • This power supply device is characterized in that the output voltage can be set to an optimum voltage by the number of power supply units in which batteries are connected in series, and mass production can be performed in units of power supply units, so that the manufacturing cost can be reduced.
  • a power supply device composed of a plurality of power supply units controls charging / discharging by detecting the state of a battery connected in series, for example, voltage, in order to prevent overcharging and overdischarging of the battery.
  • each power supply unit is provided with a detection circuit for detecting the voltage of the battery.
  • the detection circuit detects the voltage of each battery, and when any battery voltage is higher than the maximum voltage in a charged state, it limits or cuts off the charging current, and even in a discharged state. When the voltage of any battery becomes lower than the minimum voltage, the discharge current is limited or cut off to prevent overcharge or overdischarge of the battery.
  • the detection circuit supplies operating power from the battery block of the power supply unit provided with the detection circuit.
  • each power supply unit includes a DC / DC converter that stabilizes the voltage of the battery block and supplies it to the power supply line of the detection circuit.
  • the difference in the remaining capacity of the battery blocks provided in each power supply unit increases as the battery is charged and discharged. Since the battery blocks are connected in series, each battery block is charged and discharged with the same current. However, the remaining capacity can be varied due to the difference in the electrical characteristics of the battery block and the temperature difference. When there is a difference in remaining capacity, battery blocks with a small remaining capacity are likely to be overdischarged, and conversely, battery blocks with a large remaining capacity are likely to be overcharged. Since overcharge and overdischarge cause the battery to deteriorate significantly, the power supply device of Patent Document 2 is provided with an equalization circuit that eliminates the difference in the remaining capacity of the battery block. The equalization circuit discharges the battery blocks having a large remaining capacity to equalize the remaining capacity of each battery block.
  • the above power supply devices have the disadvantage that the charged electric power cannot be used effectively because the equalizing circuit discharges and equalizes the battery block having a large remaining capacity.
  • the present invention has been developed for the purpose of solving this drawback.
  • An important object of the present invention is that each battery block can be equalized while effectively using the power charged in the battery block. It is to provide a power supply device.
  • the power supply device of the present invention includes a plurality of power supply units 1.
  • Each power supply unit 1 includes a battery block 2 in which a plurality of batteries 3 are connected in series, and a state of the battery 3 constituting the battery block 2. Is provided.
  • the power supply device further includes a power supply circuit 6 that supplies power supplied from the battery block 2 to the power supply line 5 of the detection circuit 4.
  • Each power supply unit 1 has each battery block 2 connected in series, and the power supply circuit 6 supplies operating power to the detection circuit 4.
  • the power supply device detects the remaining capacity of the battery block 2 constituting each power supply unit 1 and operates from the battery block 2 having a large remaining capacity to the detection circuit 4 of the power supply unit 1 including the battery block 2 having a small remaining capacity.
  • a power supply control circuit 7 that controls the power supply circuit 6 to supply power is provided.
  • the above power supply apparatus has the feature that each battery block can be equalized while effectively using the charging power of the battery block. This is because the above power supply unit supplies operating power from a battery block with a large remaining capacity to a detection circuit of a power supply unit having a battery block with a small remaining capacity, and this power supply unit does not discharge a battery block with a small remaining capacity. This is because the detection circuit is set in an operating state. That is, a power supply unit including a battery block with a small remaining capacity operates a detection circuit with electric power supplied from a battery block with a large remaining capacity without discharging its own battery block. For this reason, a battery block with a small remaining capacity is not discharged, and a battery block with a large remaining capacity is discharged to equalize the remaining capacity.
  • the detection circuit of the power supply unit with a large remaining capacity but also the detection circuit of the power supply unit with a small remaining capacity are in operation, and the battery is protected by controlling the charge / discharge current while detecting the state of all batteries. There is a feature that can be charged and discharged while.
  • the power supply control circuit 7 can detect the remaining capacity by either or both of the voltage of the battery block 2 and the integrated value of the charge / discharge current.
  • the power supply device that detects the remaining capacity by the voltage of the battery block can charge and discharge while preventing overcharge and overdischarge of the battery. Further, the power supply device that detects the remaining capacity by the integrated value of the current can accurately detect the remaining capacity and prevent overcharging and overdischarging of the battery.
  • the power supply device of the present invention can have an insulating circuit 9 that the power supply circuit 6 supplies and supplies the ground line 8 to the power supply line 5 of another power supply unit 1.
  • the above power supply device insulates the ground line and supplies operating power to other power supply units. Therefore, it is not necessary to use a high-breakdown-voltage element for the electronic component that realizes the detection circuit, reducing the component cost, The state of the battery block can be detected.
  • a power supply circuit 6 is provided in each power supply unit 1 to convert a direct current of the battery block 2 into an operating voltage of the detection circuit 4, and from the DC / DC converter 11
  • a sub DC / DC converter 15 that realizes an insulating circuit 9 that insulates the output direct current and supplies it to the detection circuit 4 of another power supply unit 1 can be provided.
  • the above power supply apparatus can supply operating power with stabilized voltage to the detection circuit of each power supply unit. This is because the sub-DC / DC converter can supply operating power whose voltage is stabilized to the detection circuit.
  • the power supply circuit 6 is provided in each power supply unit 1 and converts the direct current of the battery block 2 into alternating current, and the alternating current output from the DC / AC inverter 12
  • a transformer 20 that performs transmission in an insulated manner and a rectifier circuit 17 that rectifies the output of the transformer 20 and uses it as operating power for the detection circuit 4 can be provided. While the above power supply device has a simple circuit configuration, it can supply operating power to the detection circuit of each power supply unit by insulating the ground line.
  • a power supply circuit 6 is provided in each power supply unit 1 to convert a direct current of the battery block 2 into an operating voltage of the detection circuit 4, and from the DC / DC converter 11
  • An insulation circuit 9 can be provided that supplies the output direct current to the detection circuit 4 of another power supply unit 1 by insulating the ground line 8.
  • the insulation circuit 9 is connected to the positive / negative output line of the DC / DC converter 11 and is simultaneously turned on / off, and is connected to the output side of the charge switch 23 so that the charge switch 23 is on.
  • the power supply apparatus described above can supply the direct current output from the DC / DC converter as operating power to the detection circuit of the power supply unit insulated from the earth line.
  • the power supply device of the present invention can be a power supply device for vehicles.
  • the power supply device of the present invention can be a power storage device for power storage.
  • the power supply apparatus shown in FIGS. 1 to 4 is mounted on a hybrid car or an electric vehicle, and is used as a power source that supplies power to a motor that runs the vehicle.
  • the power supply device of the present invention is not specified as a vehicle power supply device. It can be used for all power supplies that require high output.
  • the power supply apparatus in these figures includes a plurality of power supply units 1.
  • Each power supply unit 1 includes a battery block 2 in which a plurality of batteries 3 are connected in series, a detection circuit 4 that detects the state of the battery 3 constituting the battery block 2, and power supplied from the battery block 2.
  • a power supply circuit 6 for supplying power to the power supply line 5 of the detection circuit 4.
  • the power supply device connects the battery blocks 2 of the respective power supply units 1 in series.
  • the power supply circuit 6 supplies the power supplied from the battery block 2 to the detection circuit 4.
  • the above power supply apparatus includes a power supply control circuit 7 that controls the power supply circuit 6.
  • the power supply control circuit 7 detects the remaining capacity of the battery block 2 constituting each power supply unit 1 and detects the power supply unit 1 detection circuit 4 including the battery block 2 having a small remaining capacity from the battery block 2 having a large remaining capacity.
  • the power supply circuit 6 is controlled so as to supply operating power.
  • the power supply device in the figure controls the battery blocks 2 of the three sets of power supply units 1 in series.
  • the battery block 2 is connected in series with rechargeable batteries 3.
  • This battery 3 is a lithium ion battery. Lithium ion batteries have a high voltage, and a small number can be connected in series to increase the output voltage.
  • the battery can be any rechargeable battery such as a nickel metal hydride battery or a nickel cadmium battery.
  • the battery block 2 adjusts the output voltage by the number of batteries 3 connected in series. Further, the power supply device adjusts the output voltage by the number of power supply units 1 connected in series.
  • the output voltage is set to 100 V to 400 V, preferably 200 V to 300 V, for example.
  • the power supply can adjust the output voltage by the number of power supply units 1 connected in series. Further, the output voltage can be adjusted by the voltage of the battery block 2.
  • a battery block in which lithium ion batteries having a rated voltage of 3.7V are connected in series can have 10 batteries connected in series and an output voltage of 37V. Furthermore, four sets of this battery block can be connected in series to achieve about 150V.
  • three sets of power supply units 1 are connected in series. However, the number of power supply units connected in series is adjusted to an optimum number depending on the application and required output. . Further, the number of batteries constituting the battery block is also set to an optimum value depending on the required output voltage and the type of battery.
  • the detection circuit 4 is provided in each battery block 2 and detects the state of the battery 3 constituting the battery block 2.
  • the illustrated detection circuit 4 is a voltage detection circuit that detects the voltage of the battery 3.
  • the voltage detection circuit that is the detection circuit 4 detects the voltage of each battery 3 constituting the battery block 2.
  • the battery block 2 made of a lithium ion battery detects the voltages of all the batteries 3 connected in series with a voltage detection circuit. Since this detection circuit 4 detects the voltage of all the batteries 3 and controls charging / discharging, it can prevent overcharging and overdischarging of all the batteries 3 and can raise safety
  • a battery block made of nickel metal hydride batteries detects the voltage of a battery module in which, for example, 3 to 6 batteries are connected in series with a voltage detection circuit.
  • this detection circuit detects voltage in units of battery modules in which a plurality of batteries are connected in series and controls charging / discharging, the detection circuit can be simplified while the battery block is composed of a large number of batteries.
  • a voltage detection circuit detects the voltage of all the batteries 3 which comprise the battery block 2, or detects the voltage of the battery module which has connected the some battery in series.
  • the detection circuit can detect the temperature in addition to the voltage of the battery constituting the battery block.
  • the power supply device including this detection circuit can control charging / discharging of the battery block in a more preferable state.
  • the detection circuit 4 detects the remaining capacity of the battery 3 or the battery module by detecting the voltage of each battery 3 and further integrating the charge / discharge current. This is because the remaining capacity of the battery 3 and the battery module constituting the battery block 2 is controlled to be within the set range.
  • the detection circuit 4 detects the voltage, temperature, and remaining capacity of each battery block 2, and transmits the detected information to a vehicle side ECU (not shown) via a communication circuit (not shown).
  • the vehicle-side ECU calculates information input from the power supply device and signals from the accelerator and the brake, and controls charging / discharging of the battery.
  • each power supply unit 1 includes a power supply circuit 6 that supplies power to the detection circuit 4.
  • the power supply circuit 6 is connected to the positive side and the negative side of the battery block 2 and supplies power from the battery block 2.
  • a power supply device including three sets of power supply units 1 includes three sets of detection circuits 4 and three sets of power supply circuits 6. In the battery block in which ten lithium ion batteries are connected in series, the voltage of the battery block is about 37V. Therefore, this voltage is supplied to the power supply circuit 6.
  • Each power supply unit 1 includes a power supply circuit 6. However, the power supply unit does not necessarily supply operating power to the detection circuit from the power supply circuit provided. The operating state of the power supply circuit is controlled by the power supply control circuit.
  • the power supply control circuit 7 supplies operating power to the power supply circuit 6 from the battery block 2 determined to have the largest remaining capacity, that is, the battery block 2 having the largest dischargeable capacity, and the power supply circuit 6 has a small remaining capacity. Operating power is supplied to the detection circuit 4 of the power supply unit 1.
  • the power supply control circuit 7 detects the remaining capacity of the battery block 2 or controls the power supply circuit 6 with information on the remaining capacity input from the detection circuit 4 that detects the remaining capacity.
  • the power supply device for vehicles makes all the detection circuits 4 into an operation state in the state which drives a vehicle.
  • the detection circuit 4 in the operating state detects the remaining capacity of the battery block 2 and outputs information on the remaining capacity to be detected to the power supply control circuit 7.
  • the power supply control circuit 7 supplies power to the power supply circuit 6 from the battery block 2 determined to have the largest remaining capacity, and supplies power to the power supply circuit 6 from all other battery blocks 2 determined to have a small remaining capacity. Shut off.
  • the power supply apparatus shown in FIGS. 2 to 4 includes a DC / DC converter 11 and a DC / AC inverter 12 as a power supply circuit 6 that is supplied with electric power from the battery block 2 and enters an operating state.
  • the DC / DC converter 11 and the DC / AC inverter 12 switch the switching element 14 connected to the primary side of the transformer 13 on and off at a frequency of, for example, 10 KHz to 1 MHz, so that AC power is supplied to the secondary side of the transformer 13. Is transmitted.
  • the power supply control circuit 7 switches on / off the switching elements 14 of the DC / DC converter 11 and the DC / AC inverter 12 connected to the battery block 2 determined to have the largest remaining capacity, and the other DC / DC
  • the switching elements 14 of the converter 11 and the DC / AC inverter 12 are held in the OFF state, and the set of power supply circuits 6 is set in the operating state.
  • the power supply circuit 6 in the operating state supplies operating power to its own detection circuit 4 and also supplies operating power to the detection circuit 4 provided in another power supply unit 1.
  • the power supply circuit 6 in the operating state supplies operating power to the detection circuit 4 of another power supply unit 1.
  • the power supply circuit 6 in the operating state supplies operating power to the power supply line 5 of the other power supply unit 1 while insulating the ground line 8. That is, the operating power supplied to the detection circuit 4 of each power supply unit 1 is supplied as the ground line 8 of its own power supply unit 1. 1 to 4, if the output voltage of each battery block 2 is assumed to be 100V, a first power supply unit 1A, which is a set of three power supply units 1 connected in series, a second power supply unit 1B, The voltage of the ground line 8 of the third power supply unit 1C is 0V, 100V, and 200V in order.
  • the power supply circuit 6 of the first power supply unit 1A in which the voltage of the earth line 8 is set to 0V is activated, and the second power supply unit 1B in which the voltage of the earth line 8 is set to 100V and the voltage of the earth line 8 are set. It is assumed that operating power is supplied to the detection circuit 4 of the third power supply unit 1 ⁇ / b> C whose power is 200V. In this state, the voltage of each battery block 2 is input to the detection circuit 4 of the second power supply unit 1B and the third power supply unit 1C using 0V as the ground line 8.
  • the detection circuit 4 Since a voltage of 100 V to 300 V is input as the voltage of the battery 3 on the input side, the detection circuit 4 needs to use a semiconductor element such as an IC having a high breakdown voltage on the input side exceeding 300V. As described above, the high breakdown voltage element has disadvantages such as high component cost and high power consumption.
  • the power supply circuit 6 shown in FIGS. 1 to 4 supplies the operating power to the other power supply unit 1 by insulating the ground line 8, that is, disconnecting the ground line 8 without making it common. is doing. In order to realize this, an insulating circuit 9 is provided. The insulation circuit 9 supplies operating power without insulating and sharing the ground line 8.
  • the direct current supplied as the operating power supplied to each power supply unit 1 is supplied as the earth line 8 of each power supply unit 1 using the earth line 8. Therefore, the withstand voltage required on the input side of each detection circuit 4 becomes the maximum voltage of the input battery 3, and the voltage difference of the earth line 8 does not increase the withstand voltage required on the input side.
  • the insulation circuit 9 includes a sub DC / DC converter 15 that insulates a direct current input from the outside and supplies the direct current to the power supply line 5 of the detection circuit 4. Since this power supply apparatus includes three sets of power supply units 1, each power supply unit 1 is supplied with operating power from the other two sets of power supply units 1. In order to insulate and supply the operating power supplied from each power supply unit 1, two sets of sub DC / DC converters 15 are provided.
  • the sub DC / DC converter 15 includes a transformer (not shown), the sub DC / DC converter 15 is insulated by this transformer and supplies operating power.
  • the primary-side earth line 8 is used as the earth line 8 of the power supply unit 1 that supplies operating power
  • the secondary-side earth line 8 is used as the earth line 8 of the detection circuit 4 that is supplied with operating power and is in an operating state. Yes.
  • this power supply apparatus determines that this is the power supply control circuit 7, and the power supply control circuit 7 determines the first power supply unit 1A. Only the power supply circuit 6 is set in an operating state. The power supply circuit 6 of the first power supply unit 1A in the operating state supplies operating power to its own detection circuit 4 via the DC / DC converter 11. Further, the output of the DC / DC converter 11 is output to the sub DC / DC converter 15 of the second power supply unit 1B and the third power supply unit 1C.
  • the sub DC / DC converters 15 of the second power supply unit 1B and the third power supply unit 1C convert DC power supplied from the power supply circuit 6 of the first power supply unit 1A into the ground line 8 of the first power supply unit 1A. And is supplied as operating power to each detection circuit 4.
  • the sub DC / DC converter 15 provided in the second power supply unit 1B raises the DC ground line 8 supplied as operating power from the first power supply unit 1A to 100 V, and supplies it to the power supply line 5 of the detection circuit 4. Supply.
  • the sub DC / DC converter 15 of the third power supply unit 1C raises the DC ground line 8 supplied as operating power from the first power supply unit 1A to 200 V and supplies it to the power supply line 5 of the detection circuit 4. To do. Accordingly, the detection circuit 4 of the second power supply unit 1 ⁇ / b> B and the third power supply unit 1 ⁇ / b> C is not required to have a withstand voltage due to the voltage difference of the ground line 8.
  • each power supply unit 1 is provided with the secondary coil 16.
  • An insulating circuit 9 for insulating the earth line 8 is provided.
  • Each secondary coil 16 is provided with a rectifier circuit 17 and supplies the direct current rectified by the rectifier circuit 17 to the detection circuits 4 of the first to third power supply units 1 as operating power.
  • the secondary coils 16 are insulated from each other, and the earth line 8 serves as the earth line 8 of the first to third power supply units 1.
  • this power supply apparatus determines that this is the power supply control circuit 7, and the power supply control circuit 7 determines the first power supply unit 1A.
  • the DC / DC converter 11 which is the power supply circuit 6 is set in the operating state.
  • the DC / DC converter 11 which is the power supply circuit 6 of the first power supply unit 1A in the operating state is provided with a detection circuit for the first to third power supply units 1 via three sets of secondary coils 16 and a rectifier circuit 17. 4 is supplied with operating power.
  • the three sets of secondary coils 16 do not share a common ground line 8, and the direct current output from the rectifier circuit 17 is connected to the ground line 8 of each power supply unit 1 on the negative side, and the direct current of the operating power is respectively To the detection circuit 4.
  • each power supply unit 1 is not provided with a power supply circuit, but a set of power supply circuits 6 is provided.
  • the power supply circuit 6 is a DC / DC converter 11 having three sets of secondary coils 16.
  • the DC / DC converter 11 includes a changeover switch 18 that switches the series circuit 19 of the primary side of the transformer 13 and the switching element 14 to the battery block 2 of the first to third power supply units 1.
  • the changeover switch 18 is controlled by the power supply control circuit 7 to connect the battery block 2 having the largest remaining capacity to the series circuit 19.
  • this power supply apparatus determines that this is the power supply control circuit 7, and the power supply control circuit 7 determines the first power supply unit 1A.
  • the DC / DC converter 11 of the power supply circuit 6 in the operating state supplies operating power to the detection circuit 4 of the first to third power supply units 1 via the three sets of secondary coils 16 and the rectifier circuit 17.
  • the three sets of secondary coils 16 do not share a common ground line 8, and the direct current output from the rectifier circuit 17 is connected to the ground line 8 of each power supply unit 1 on the negative side, and the direct current of the operating power is respectively To the detection circuit 4.
  • the power supply apparatus of FIG. 4 includes a DC / AC inverter 12 in which each power supply unit 1 is activated by the battery block 2. Further, an insulation composed of a transformer 20 having three sets of secondary coils 16 for outputting the alternating current output from the DC / AC inverter 12 to the detection circuit 4 of each power supply unit 1 in a state where the ground line 8 is not shared. A circuit 9 is provided. The secondary coil 16 is connected to the rectifier circuit 17 and supplies operating power to the detection circuit 4 of each power supply unit 1.
  • this power supply apparatus determines that this is the power supply control circuit 7, and the power supply control circuit 7 determines the first power supply unit 1A.
  • the switching element 14 of the DC / AC inverter 12 is switched on and off, and the switching element 14 of the DC / AC inverter 12 of the second power supply unit 1B and the third power supply unit 1C is held in the off state, so that the first power supply Only the DC / AC inverter 12 that is the power supply circuit 6 of the unit 1A is set in the operating state.
  • the DC / AC inverter 12 in the operating state outputs alternating current. This alternating current is supplied to the transformer 20.
  • the insulating transformer 13 supplies operating power to the detection circuits 4 of the first to third power supply units 1 via the three sets of secondary coils 16 and the rectifier circuit 17.
  • the three sets of secondary coils 16 do not share a common ground line 8, and the direct current output from the rectifier circuit 17 is connected to the ground line 8 of each power supply unit 1 on the negative side, and the direct current of the operating power is respectively To the detection circuit 4.
  • a DC / DC converter 11 that converts the power supplied from the battery block 2 into a voltage to be supplied to the power supply line 5 of the detection circuit 4 as the power supply circuit 6. Further, as the insulation circuit 9, a charge capacitor 21, a power supply capacitor 22 and a charge capacitor 21 which supply the direct current output from the DC / DC converter 11 to each power supply unit 1 by disconnecting the ground line 8 are connected to the DC / DC.
  • a charge switch 23 for charging with direct current output from the converter 11 and a charge switch 24 for separating the charged charge capacitor 21 from the DC / DC converter 11 and charging the power supply capacitor 22 are provided. The charge switch 23 and the charge switch 24 are not switched on at the same time, but one is switched on and the other is switched off.
  • the charge switch 23 and the charge switch 24 are connected to both the positive side and the negative side of the direct current.
  • the insulating circuit 9 switches on the charge switch 23 with the charge switch 24 turned off, and charges the charge capacitor 21 with the output of the DC / DC converter 11. Thereafter, the charge switch 23 is turned off, the charge switch 24 is turned on, and the power capacitor 22 is charged by the charge capacitor 21.
  • the power supply capacitor 22 is an electrolytic capacitor connected to the output side of the charge capacitor 21 and is charged to the charge capacitor 21 in a state where the charge switch 24 is turned on.
  • the power supply capacitor 22 supplies operating power to each detection circuit 4.
  • the insulation circuit 9 alternately switches between the charge switch 23 and the charge switch 24 at a constant cycle, charges the charge capacitor 21 with the output of the DC / DC converter 11, and supplies each detection circuit 4 via the power supply capacitor 22. Switches the operating power.
  • the ground line 8 of the power supply capacitor 22 is connected to the ground line 8 of each power supply unit 1.
  • this power supply apparatus determines that this is the power supply control circuit 7, and the power supply control circuit 7 determines the first power supply unit 1A.
  • Only the power supply circuit 6 is set in an operating state.
  • the power supply circuit 6 of the first power supply unit 1A in the operating state supplies operating power to its own detection circuit 4 via the DC / DC converter 11.
  • the insulating circuit 9 alternately switches the charge switch 23 and the charge switch 24 on and off, and supplies the operating power to the detection circuit 4 of each power supply unit 1 with the output of the DC / DC converter 11. 22 is charged.
  • the power supply capacitor 22 supplies power to the detection circuit 4 of each power supply unit 1 in a state where the ground line 8 of the first power supply unit 1A is disconnected.
  • each power supply unit 1 includes a power supply circuit 6 and an insulation circuit 9.
  • the power supply device is not shown, but each power supply unit is provided with a set of power supply circuit and insulation circuit without providing a power supply circuit and an insulation circuit, and the input side of this power supply circuit is switched with a changeover switch. It can also be connected to the battery blocks of the first to third power supply units.
  • the changeover switch is controlled by the power supply control circuit to connect the battery block having the largest remaining capacity to the power supply circuit.
  • the above power supply device supplies operating power from the battery block 2 having the largest remaining capacity to each detection circuit 4, the difference in the remaining capacity of the battery block 2 can be equalized by the power supplied to the detection circuit 4. However, if the battery block 2 cannot be equalized only by the power consumption of the detection circuit 4, the battery block 2 can be equalized by providing another equalization circuit (not shown). (Power storage device for power storage)
  • FIG. 6 shows a power supply device that is required to have a large output and is used as a storage facility.
  • This power supply device is a power source for solar power generation or midnight power, for example, as a household or factory power source, and discharges when necessary, or solar power during the day to charge at night It can be used as a power source for street lamps that discharge, a backup power source for traffic lights that are driven in the event of a power failure.
  • the power supply apparatus 100 in this figure has a plurality of battery blocks 2 connected in series. Each battery block 2 has a plurality of batteries 3 connected in series.
  • a charging power supply CP and a load LD are connected via a charging switch CS and a discharging switch DS.
  • the power supply apparatus 100 is charged by the charging power supply CP and supplies power to the load LD via the DC / AC inverter 30. Therefore, the power supply apparatus 100 is switched between the charge mode and the discharge mode by controlling the charge switch CS and the discharge switch DS with the power supply control circuit 7. The ON / OFF of the discharge switch DS and the charge switch CS is switched by the power supply control circuit 7. In the charging mode, the power supply control circuit 7 switches the charging switch CS to ON and the discharging switch DS to OFF to permit charging from the charging power supply CP to the power supply device 100.
  • the charged power supply device 100 is fully charged, or the power supply control circuit 7 turns on the discharge switch DS and turns on the load LD in response to a request from the load LD in a state where a capacity of a predetermined value or more is charged.
  • the charging switch CS is controlled to be ON or OFF.
  • the power supply apparatus 100 supplies power to the load LD while being charged.
  • the load LD driven by the power supply device 100 is connected to the power supply device 100 via the discharge switch DS.
  • the power supply control circuit 7 switches the discharge switch DS to ON, connects to the load LD, and drives the load LD with the power from the power supply apparatus 100.
  • the discharge switch DS a switching element such as an FET or a relay can be used. ON / OFF of the discharge switch DS is controlled by the power supply control circuit 7 of the power supply apparatus 100.
  • the power supply control circuit 7 includes a communication interface (not shown) for communicating with an external device. The communication interface connects the power supply device to a load or a charging power source according to an existing communication protocol such as UART or RS-232C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'objet de la présente invention est d'égaliser des blocs de cellules tout en utilisant de façon efficace l'énergie chargée dans lesdits blocs de cellules. La présente invention a trait à un dispositif de blocs d'alimentation qui est équipé d'une pluralité de blocs d'alimentation (1) et chaque bloc d'alimentation (1) est équipé : d'un bloc de cellules (2) doté d'une pluralité de cellules (3) qui sont connectées en série ; et d'un circuit de détection (4) permettant de détecter l'état des cellules (3) configurant le bloc de cellules (2). De plus, le dispositif de blocs d'alimentation est équipé d'un circuit d'alimentation électrique (6) permettant de fournir l'énergie fournie à partir des blocs de cellules (2) à la ligne d'alimentation électrique (5) des circuits de détection (4). Dans chaque bloc d'alimentation (1), les blocs de cellules (2) sont connectés en série et l'énergie nécessaire au fonctionnement est fournie au circuit de détection (4) au moyen du circuit d'alimentation électrique (6). Le dispositif de blocs d'alimentation est équipé d'un circuit de commande d'alimentation électrique (7) permettant de détecter la capacité résiduelle des blocs de cellules (2) dans chaque bloc d'alimentation (1) et de contrôler les circuits d'alimentation électrique (6) de manière à ce que l'énergie nécessaire au fonctionnement soit fournie au circuit de détection (4) du bloc d'alimentation (1) équipé du bloc de cellules (2) ayant une faible capacité résiduelle à partir d'un bloc de cellules (2) ayant une capacité résiduelle élevée.
PCT/JP2011/072123 2010-09-30 2011-09-27 Dispositif de blocs d'alimentation WO2012043589A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2010223161 2010-09-30
JP2010-223161 2010-09-30
JP2011133632 2011-06-15
JP2011-133632 2011-06-15

Publications (1)

Publication Number Publication Date
WO2012043589A1 true WO2012043589A1 (fr) 2012-04-05

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Application Number Title Priority Date Filing Date
PCT/JP2011/072123 WO2012043589A1 (fr) 2010-09-30 2011-09-27 Dispositif de blocs d'alimentation

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Country Link
WO (1) WO2012043589A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104539017A (zh) * 2014-12-31 2015-04-22 深圳先进技术研究院 一种动力电池组均衡系统及均衡方法
CN107017688A (zh) * 2017-06-08 2017-08-04 合肥凯利科技投资有限公司 一种集成有dc‑dc功能的电池管理装置
WO2024016694A1 (fr) * 2022-07-22 2024-01-25 荣耀终端有限公司 Circuit de gestion de batterie double et dispositif électronique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007244058A (ja) * 2006-03-07 2007-09-20 Nissan Motor Co Ltd 組電池の容量調整装置
JP2009543539A (ja) * 2006-07-13 2009-12-03 エルジー・ケム・リミテッド バッテリー装置の回路動作電流バランシング装置及び方法
JP2011223750A (ja) * 2010-04-09 2011-11-04 Ihi Corp 電源装置及び電圧調整方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007244058A (ja) * 2006-03-07 2007-09-20 Nissan Motor Co Ltd 組電池の容量調整装置
JP2009543539A (ja) * 2006-07-13 2009-12-03 エルジー・ケム・リミテッド バッテリー装置の回路動作電流バランシング装置及び方法
JP2011223750A (ja) * 2010-04-09 2011-11-04 Ihi Corp 電源装置及び電圧調整方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104539017A (zh) * 2014-12-31 2015-04-22 深圳先进技术研究院 一种动力电池组均衡系统及均衡方法
CN107017688A (zh) * 2017-06-08 2017-08-04 合肥凯利科技投资有限公司 一种集成有dc‑dc功能的电池管理装置
WO2024016694A1 (fr) * 2022-07-22 2024-01-25 荣耀终端有限公司 Circuit de gestion de batterie double et dispositif électronique

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