WO2010113206A1 - 充電装置 - Google Patents
充電装置 Download PDFInfo
- Publication number
- WO2010113206A1 WO2010113206A1 PCT/JP2009/001473 JP2009001473W WO2010113206A1 WO 2010113206 A1 WO2010113206 A1 WO 2010113206A1 JP 2009001473 W JP2009001473 W JP 2009001473W WO 2010113206 A1 WO2010113206 A1 WO 2010113206A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- charging
- battery
- voltage
- discharge
- circuit
- Prior art date
Links
Images
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- the present invention relates to a charging device for a secondary battery.
- a charging device that charges secondary batteries connected in multiple stages in series is known.
- this type of charging device one having an overcharge protection circuit in order to prevent overcharging of the secondary battery is known.
- This overcharge protection circuit is provided with a discharge route circuit including a discharge resistor for each secondary battery in parallel, and when an overcharge of any secondary battery is detected, the secondary battery in which overcharge is detected is discharged. The battery is forcibly discharged by being connected to the circuit, and the charging current flowing into the secondary battery is bypassed to the discharge route circuit (see, for example, Patent Document 1).
- the overcharge protection circuit Since it functions as a balance circuit that balances the battery voltage between the secondary batteries so as to have a certain upper limit value, charging that compensates for variations in characteristics between the secondary batteries becomes possible. Also, for secondary battery charging where the battery voltage (internal resistance) at the time of charging changes greatly due to deterioration over time, there is a secondary charge when charging at the start of use and when charging after some deterioration over time. Since the upper limit value of the battery voltage is kept constant regardless of the internal resistance of the battery, charging that compensates for aging deterioration becomes possible. Japanese Patent Laid-Open No. 10-50352
- the present invention provides a charging device that charges a battery set in which a plurality of secondary batteries are connected in series by supplying a charging current, and the battery voltage of the secondary battery is predetermined during charging.
- a discharge route circuit for discharging a charging current supplied to the secondary battery when the voltage is exceeded is provided for each secondary battery, and after completion of charging, the discharge route circuit is provided from each of the secondary batteries.
- a cutting means for cutting is provided.
- Charge control means for reducing the charge current and continuing the charge is provided.
- a charging apparatus for supplying a charging current to a battery set in which a plurality of secondary batteries are connected in series to charge the battery, and detecting a battery voltage of the secondary battery.
- the voltage detection resistor includes a plurality of resistance elements connected in series, and includes a short circuit that individually short-circuits each resistance element.
- the present invention provides a charger for supplying external power to a parallel circuit in which the battery set and an external load are connected in parallel in the above charging device, and charging the battery set and supplying power to the external load.
- the battery set and the external load are maintained in a conductive state, and the voltage applied by the charger to the parallel circuit is maintained at substantially zero charging current flowing into the battery set. It controls to do.
- the present invention when the charging is completed, all the discharge route circuits provided for each secondary battery are disconnected from the secondary battery. Therefore, after the charging is completed, the charged power is not discharged by the discharge route circuit. , Can increase energy efficiency.
- FIG. 1 is a diagram showing a configuration of a charging apparatus according to the first embodiment of the present invention.
- FIG. 2 is a diagram illustrating a configuration of the voltage detection resistor.
- FIG. 3 is a flowchart of the charging process.
- FIG. 4 is a diagram illustrating a charging pattern.
- FIG. 1 is a diagram illustrating a configuration of a charging device 1 according to the present embodiment.
- the charging device 1 includes a storage battery unit 2 that stores electric power, and a charger unit 4 that supplies the electric power to the storage battery unit 2 and charges it.
- the charger unit 4 includes an external power connector 6, a charger 8, a charger controller 10, a current detector 12, a display 14, and a cutoff switch 16.
- the external power connector 6 is a connector to which an external power source 18 such as a commercial power source is connected, and the power of the external power source 18 is input to the charger 8.
- the charger 8 supplies power from the external power source 18 to the storage battery unit 2 and the external load 19 to charge the storage battery unit 2 and drive the external load 19.
- the external load 19 is a target device that supplies power stored in the storage battery unit 2 when the external power source 18 is powered off. More specifically, the battery 8 and the external load 19 are connected in parallel to the charger 8, and the parallel circuit 9 is configured by the battery 2 and the external load 19.
- the charger 8 applies a voltage ⁇ to the parallel circuit 9 to supply a DC charging current Ic to the storage battery unit 2 and supply power to the external load 19.
- the charger 8 When a power failure occurs in the external power supply 18, the charger 8 is in a high impedance state as seen from the parallel circuit 9 including the storage battery unit 2 and the external load 19, so the storage battery unit 2 and the external load 19 are automatically connected in series, Livestock power is supplied from the storage battery unit 2 to the external load 19.
- the charger controller 10 variably controls the current value of the charging current Ic during charging, and is connected to the storage battery unit 2 via the signal line 20.
- the charger controller 10 controls the charging current Ic based on a signal received from the storage battery unit 2 via the signal line 20.
- the current detector 12 is inserted on a series circuit connecting the charger 8 and the storage battery unit 2, detects the charging current Ic from the storage battery unit 2 toward the charger 8, and outputs it to the charger controller 10. It is.
- the charger controller 10 variably controls the current value of the charging current Ic based on the detection signal of the current detector 12.
- the display 14 displays various information such as a charging state under the control of the charger controller 10.
- the cut-off switch 16 is a normally closed switch for stopping the discharge of the storage battery unit 2, is inserted on a series circuit connecting the charger 8 and the storage battery unit 2, and is stored under the control of the charger controller 10.
- the storage battery unit 2 is opened to prevent overdischarge. Thereby, the discharge accompanying the electric power supply etc. from the storage battery part 2 to the external load 19 is stopped, and an overdischarge is prevented.
- the cutoff switch 16 is a normally closed switch
- the storage battery unit 2 and the external load 19 are normally held in a conductive state. Since the storage battery unit 2 and the external load 19 are thus kept in a conductive state without being interrupted by a switch or the like in this way, even if a power failure occurs in the external power supply 18, the power supply to the switch is not made. A situation in which the storage battery unit 2 and the external load 19 remain disconnected without stopping and operating is prevented. However, if the storage battery unit 2 and the external load 19 are always kept in a conductive state, the storage power of the storage battery unit 2 is supplied to the external load 19 when the storage battery unit 2 is not charged.
- the charging device 1 performs zero current charging to maintain the charging current Ic flowing into the storage battery unit 2 at substantially zero, whereby electric power is supplied from the storage battery unit 2 to the external load 19 and is discharged wastefully. Is prevented.
- the charger controller 10 sets the parallel circuit 9 so that the charging current Ic flowing into the storage battery unit 2 is maintained at substantially zero based on the detection value of the current detector 12.
- the voltage ⁇ to be applied is feedback controlled. As a result, the differential pressure between the voltage ⁇ and the voltage of the storage battery unit 2 becomes substantially equal, the charging current Ic to the storage battery unit 2 becomes substantially zero, this state is maintained, and the storage battery unit 2 stores the external load 19. The power supply is held in a stopped state.
- the storage battery unit 2 includes a battery set 24 formed by connecting n (n ⁇ 2) secondary batteries (cells) 22 in series, and an overcharge protection circuit (balance circuit) 26.
- the secondary battery 22 is a lithium polymer battery as an example of a lithium ion battery.
- any sealed secondary battery such as a nickel metal hydride battery or a nickel cadmium battery can be used.
- the secondary batteries 22 constituting the battery set 24 are all the same type of secondary batteries.
- the storage battery unit 2 is provided with an anode terminal 30 electrically connected to the anode of the battery set 24 and a cathode terminal 32 electrically connected to the negative electrode of the battery set 24.
- the anode terminal 30 and the cathode A terminal 32 is electrically connected to the charger unit 4.
- a charging current Ic is supplied from the charger unit 4 to the battery set 24 via the anode terminal 30 to charge the battery set 24.
- the overcharge protection circuit 26 protects overcharge to the secondary battery 22 by aligning the voltage balance between the secondary batteries 22, and a discharge route circuit 34 provided in parallel for each secondary battery 22. And a detector group 36 provided for each secondary battery 22, a disconnection circuit 37, and a battery control unit 38.
- the discharge route circuit 34 is a circuit in which a discharge resistor (balance resistor) 40 and a switching element 42 are connected in series in the route.
- the switching element 42 is a normally open contact, and is closed when the battery voltage Vb of the secondary battery 22 reaches the overcharge protection voltage Vth1.
- This overcharge protection voltage Vth1 is set to a value lower than the full charge voltage Vm according to the type of the secondary battery 22 (for example, a value of 90% of the full charge voltage Vm). In the case of a lithium polymer battery, for example, it is a value that does not exceed 4.2 V, which is considered to be fully charged.
- the discharge route circuit 34 is electrically connected to the secondary battery 22, and the secondary battery 22 starts discharging to the discharge route circuit 34.
- the secondary battery is discharged due to energy discharge due to discharge or a decrease in the amount of inflow into the secondary battery 22 by bypassing the charging current Ic to the discharge route circuit 34.
- the battery voltage Vb of 22 gradually decreases.
- the switching element 42 is opened, and the discharge to the discharge route circuit 34 is stopped. Transition to a charged state.
- the difference between the overcharge protection voltage Vth1 and the protection stop voltage Vth2 is set to such an extent that at least chattering of the switching element 42 can be prevented.
- the charging current Ic flowing into the secondary battery 22 is bypassed by the discharge route circuit 34 and introduced into the secondary battery 22 at the subsequent stage.
- the current value bypassed at this time is determined by the resistance value of the discharge resistor 40.
- the detector group 36 includes an overcharge protection detector 44, a charge completion detector 46, and a discharge cutoff detector 48.
- the overcharge protection detector 44, the charge completion detector 46, and the discharge interruption detector 48 have a comparator circuit that compares the battery voltage Vb of the secondary battery 22 with a predetermined voltage set for each. Has been.
- the overcharge protection detector 44 detects the battery voltage Vb of the secondary battery 22, compares the battery voltage Vb with the overcharge protection voltage Vth1, and the battery voltage Vb exceeds the overcharge protection voltage Vth1. In this case, the switching element 42 is closed, and the secondary battery 22 is discharged to the discharge route circuit 34.
- the overcharge protection detector 44 opens the switching element 42 and stops discharging the secondary battery 22 to the discharge route circuit 34 when the battery voltage Vb falls below the protection stop voltage Vth2.
- the overcharge protection detector 44 Each time the overcharge protection detector 44 opens or closes the switching element 42, the overcharge protection detector 44 outputs to the battery control unit 38 an open / closed signal indicating the open / closed state of the switching element 42, that is, the start / stop of discharge.
- the battery control unit 38 When such an open / close signal is input, the battery control unit 38 outputs an open / close signal to the charger controller 10 of the charger unit 4 via the signal line 20, whereby the charger controller 10 supplies the discharge route circuit 34. It becomes possible to detect the presence or absence of discharge.
- the charger controller 10 detects that any secondary battery 22 has started discharging to the discharge route circuit 34 based on the open / close signal during charging, the discharge to the discharge route circuit 34 is stopped. Control is performed until the charging current Ic is decreased until such time, and this control will be described later.
- the charge completion detector 46 detects the battery voltage Vb of the secondary battery 22, compares this battery voltage Vb with the full charge voltage Vm, and when the battery voltage Vb reaches the full charge voltage Vm, the full charge completion signal Is output to the battery control unit 38.
- the battery control unit 38 outputs a charge completion signal to the charger controller 10 via the signal line 20 when receiving a full charge completion signal from each secondary battery 22.
- the charger controller 10 controls the voltage ⁇ applied to the parallel circuit 9 including the storage battery unit 2 so that the charging current Ic flowing through the storage battery unit 2 becomes substantially zero, and the above zero. The charging to the storage battery unit 2 is stopped as the current charging state.
- the charging is continued until the battery voltage Vb of all the secondary batteries 22 reaches the full charge voltage Vm, but the upper limit value of the allowable voltage of the battery voltage Vb of any of the secondary batteries 22.
- the charging of the storage battery unit 2 is quickly stopped to prevent the secondary battery 22 from being overcharged.
- the discharge cutoff detector 48 detects the battery voltage Vb of the secondary battery 22 while the livestock power of the battery set 24 is supplied to the external load 19, and compares this battery voltage Vb with the discharge cutoff voltage Vth3. When the battery voltage Vb falls below the discharge cutoff voltage Vth3, a detection signal is output to the battery control unit 38.
- the discharge cutoff voltage Vth3 prevents the secondary battery 22 from discharging beyond the end voltage, that is, a so-called overdischarge state, and is set to a voltage that does not fall below the end voltage. For example, when the secondary battery 22 is a lithium polymer battery, the discharge cutoff voltage Vth3 is set to about 3V.
- the charging device 1 includes a temperature detection sensor such as a thermistor for detecting the battery temperature of the battery set 24, and the temperature of the battery set 24 is set to a predetermined temperature (for example, 60 degrees for a lithium polymer battery) during charging. When it exceeds, it is comprised so that charge may be stopped.
- a temperature detection sensor such as a thermistor for detecting the battery temperature of the battery set 24, and the temperature of the battery set 24 is set to a predetermined temperature (for example, 60 degrees for a lithium polymer battery) during charging. When it exceeds, it is comprised so that charge may be stopped.
- the disconnection circuit 37 is a circuit that electrically disconnects all the discharge route circuits 34 provided for each secondary battery 22 from the secondary battery 22 when the charging of the battery set 24 is completed. Specifically, as the charger controller 10 stops charging the storage battery unit 2, a disconnect signal is input from the charger controller 10 to all disconnect circuits 37. The cutting circuit 37 opens the switching element 42 and electrically disconnects the discharge route circuit 34 from the secondary battery 22 in accordance with the input of the cutting signal.
- the charging current Ic is controlled while comparing the battery voltage Vb and the overcharge protection voltage Vth1 for each secondary battery 22, and the batteries of all the secondary batteries 22 are also controlled. Charging is controlled based on the battery voltage Vb such that charging is continued until the voltage Vb reaches the full charge voltage Vm. Therefore, if the detection accuracy of the battery voltage Vb is poor, variable control of the charging current Ic, which will be described later, in accordance with the discharge to the discharge route circuit 34 cannot be performed accurately, and each secondary battery 22 is set to the full charge voltage Vm. You may not be able to charge.
- FIG. 2 is a diagram showing a circuit configuration of the voltage detection resistor 61 for detecting the battery voltage Vb of the secondary battery 22.
- the voltage detection resistor 61 is connected in parallel to the secondary battery 22, and a plurality of fixed resistance elements 63 (14 in the illustrated example) are connected in series. Yes.
- a potential difference corresponding to the battery voltage Vb of the secondary battery 22 is generated between the nodes Na and Nb at both ends of the voltage detecting resistor 61, and this potential is input to the comparator circuit of the charging completion detector 46. And compared with a full charge voltage Vm as a reference voltage.
- the voltage detection resistor 61 further includes a short circuit 64 in some of the fixed resistance elements 63.
- the short-circuit device 64 includes terminals drawn from both ends of the fixed resistance element 63, and the fixed resistance elements 63 can be individually short-circuited by short-circuiting these terminals with, for example, solder. Thereby, in the voltage detection resistor 61, the resistance value can be adjusted by individually short-circuiting an appropriate number of fixed resistance elements 63.
- the resistance value of the fixed resistance element 63 varies somewhat depending on the production lot, temperature, and the like. Therefore, even if a predetermined number of fixed resistance elements 63 are connected in series, a desired resistance value cannot be obtained.
- the present embodiment it is possible to adjust the voltage detection resistor 61 to a desired resistance value by appropriately short-circuiting the short-circuiting device 64. Accordingly, since the battery voltage Vb of each secondary battery 22 is accurately detected, it is possible to finish charging with all the secondary batteries 22 accurately aligned with the full charge voltage Vm.
- the minimum variable value of resistance of the voltage detection resistor 61 (the resistance value per one of the fixed resistance elements 63) is an upper limit value allowed as the battery voltage Vb of the secondary battery 22, and the full charge voltage Vm. Is set to a resistance value that enables the battery voltage Vb to be adjusted at a voltage value of about one-tenth of the potential difference between the first and second voltages. This prevents the battery voltage Vb from exceeding the full charge voltage Vm and reaching the upper limit value.
- the voltage detection resistor 61 is provided with a variable resistor 70, a capacitor 71, and a fixed resistance element 72 as appropriate in parallel. In particular, the accuracy can be improved by providing the variable resistor 70.
- FIG. 3 is a flowchart showing a charging process of the charging device 1
- FIG. 4 is a diagram showing a charging pattern by the charging device 1.
- FIG. 4 shows charging patterns for two secondary batteries 22A and 22B having different battery voltage rising characteristics during charging.
- the charging device 1 When charging, the charging device 1 first determines whether or not the charging start condition is satisfied (step S1).
- the charging start conditions include, for example, various conditions such as when the battery set 24 is not fully charged, when the cutoff switch 16 is opened to prevent overdischarge, and when a certain period has elapsed since the end of the previous charging. Is set.
- the charging device 1 supplies the charging current Ic having the current value Iini to the storage battery unit 2 and starts charging (step S2). That is, the charging device 1 adjusts the voltage ⁇ applied to the battery set 24 so that the current value of the charging current Ic becomes the current value Iini while sampling the detection signal from the current detector 12.
- the battery voltage Vb of each of the secondary batteries 22A and 22B of the battery set 24 increases from the initial charging voltages V0a and V0b. Start.
- the battery voltage Vb of the secondary battery 22B reaches the overcharge protection voltage Vth1.
- the overcharge protection detector 44 of the secondary battery 22A closes the switching element 42 to prevent the secondary battery 22A from being overcharged, and the secondary battery 22A is connected to the discharge route circuit 34 for discharging.
- an open / close signal is output to the charger controller 10, whereby the charger controller 10 detects the discharge of the secondary battery 22A to the discharge route circuit 34. Is done.
- the charger controller 10 when the charger controller 10 detects discharge of any of the secondary batteries 22 to the discharge route circuit 34 (step S ⁇ b> 3: YES), the charger controller 10 sequentially decreases the current value of the charging current Ic (Ste S4). As a result, as shown in FIG. 4, the current value of the charging current Ic is decreased from the time t1 when the battery voltage Vb of the secondary battery 22A reaches the overcharge protection voltage Vth1.
- the overcharge protection of the secondary battery 22A occurs.
- the detector 44 opens the switching element 42 and stops discharging the secondary battery 22A to the discharge route circuit 34. This stoppage of discharge to the discharge route circuit 34 is detected by the charger controller 10 by the output of the open / close signal to the charger controller 10.
- step S5 when the charger controller 10 detects the stop of discharge of the secondary battery 22 to the discharge route circuit 34 (step S5: YES), the charger controller 10 stops the decrease in the current value of the charging current Ic. (Step S6), the processing procedure is returned to step S3, and charging is continued. As a result, as shown in FIG. 4, the charging current Ic decreases until the battery voltage Vb of the secondary battery 22A falls to the protection stop voltage Vth2, and is fixed to the current value when the discharge is stopped. When the charging current Ic is decreased, not only the secondary battery 22A but also the battery voltage Vb of the other secondary battery 22B is reduced.
- the charging current Ic is decreased until the discharge of the secondary battery 22 to the discharge route circuit 34 stops. The process is repeated.
- the number of repetitions varies depending on the difference in voltage rise characteristics when the secondary battery 22 is charged, the degree of deterioration, and the like, and is not always repeated a fixed number of times.
- the charging current Ic decreases, and when the charging current Ic is decreased by the processing of step S ⁇ b> 4, the charging current Ic is It becomes lower than the charging lower limit current value Ith (time t3).
- This charging lower limit current value Ith is set to a predetermined current value indicated when each secondary battery 22 approaches a fully charged state.
- step S7 when the charger controller 10 detects that the charging current Ic has become equal to or lower than the charging lower limit current value Ith (step S7: YES), the charging controller Ic maintains the charging current Ic at the charging lower limit current value Ith. Charging is continued (step S8).
- the charger controller 10 After charging is completed in this way, the charger controller 10 inputs a disconnection signal to all the disconnection circuits 37 via the battery control unit 38 in order to prevent unnecessary discharge in the discharge route circuit 34.
- the element 42 is opened to electrically disconnect all the discharge route circuits 34 from the secondary battery 22 (step S10).
- the charging device 1 makes the charge state of the storage battery part 2 the said zero current charge state, and stops the charge to the storage battery part 2 (step S11).
- the voltage ⁇ of the charger 8 is feedback controlled so that the charging current Ic flowing into the storage battery unit 2 is maintained at substantially zero.
- step S10 and S11 As a result, charging to the storage battery unit 2 is stopped, and the storage battery unit 2 and the external load 19 are held in a conductive state while the supply of livestock power from the storage battery unit 2 to the external load 19 is stopped. To do. In addition, you may reverse the order of each process of step S10 and S11.
- the cutting circuit 37 that electrically disconnects all the discharge route circuits 34 provided for each secondary battery 22 from the secondary battery 22 when the charging of the battery set 24 is completed is provided.
- the configuration whereby, even when the charging device 1 includes the discharge route circuit 34, the charged power is not discharged by the discharge route circuit 34 after the completion of charging, and energy efficiency can be improved.
- the secondary battery 22 that has started discharging is charged until the discharge into the discharge route circuit 34 stops. Since the secondary battery 22 is charged to the full charge voltage Vm by decreasing the current Ic and continuing the charge, the discharge in the discharge route circuit 34 can be suppressed and the full charge state can be maintained. In addition, since the full charge voltage Vm is higher than the charge completion voltage set in the conventional charging device, in the fully charged state, the current flowing through the discharge route circuit 34 becomes relatively large, causing a problem of heat generation. On the other hand, according to the present embodiment, since the discharge route circuit 34 is disconnected from the secondary battery 22, such a problem does not occur.
- the voltage detection resistor 61 includes a plurality of fixed resistance elements 63 connected in series, and includes a short circuit 64 that individually short-circuits each fixed resistance element 63. For this reason, the battery voltage Vb of each secondary battery 22 can be accurately detected, and charging can be completed with all the secondary batteries 22 accurately aligned in a fully charged state.
- the battery set 24 and the external load 19 are connected to the charger 8 by configuring the parallel circuit 9 with the battery set 24 and the external load 19, so that the battery set 24 and the external load 19 are conducted during non-charging. Held in a state. For this reason, when the external power supply 18 supplied to the charger 8 has a power failure or the like, the battery set 24 and the external load 19 automatically form a series circuit, and the stored power is supplied from the battery set 24 to the external load 19. Will start immediately. Further, when the battery 8 is not charged, the voltage ⁇ applied by the charger 8 to the parallel circuit 9 is controlled so that the charging current Ic flowing into the battery set 24 is maintained at substantially zero. It is not supplied and wasteful discharge of the battery set 24 is prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
この種の充電装置においては、二次電池への過充電を防止するために過充電保護回路を備えたものが知られている。この過充電保護回路は、二次電池毎に放電抵抗を含む放電ルート回路を並列に設け、いずれかの二次電池の過充電を検出した場合、過充電が検出された二次電池を放電ルート回路に接続して強制的に放電させ、また、この二次電池に流入する充電電流を放電ルート回路にバイパスさせている(例えば、特許文献1参照)。
本発明は、上述した事情に鑑みてなされたものであり、放電ルート回路での放電を抑制しエネルギー効率を高めることができる充電装置を提供することを目的とする。
2 蓄電池部
4 充電器部
8 充電器
9 並列回路
10 充電器コントローラー
12 電流検出器
18 外部電源
19 外部負荷
22、22A、22B 二次電池
24 電池組
26 過充電保護回路
34 放電ルート回路
37 切断回路(切断手段)
38 電池制御部
40 放電抵抗
42 スイッチング素子
61 電圧検出用抵抗器
63 固定抵抗素子
64 短絡器
Ic 充電電流
Vb 電池電圧
Vm 満充電電圧
Vth1 過充電保護電圧
図1は、本実施形態に係る充電装置1の構成を示す図である。この図に示すように、充電装置1は、電力を蓄える蓄電池部2と、この蓄電池部2に電力を供給して充電する充電器部4とを備えている。
充電器部4は、外部電源コネクタ6と、充電器8と、充電器コントローラー10と、電流検出器12と、表示器14と、遮断スイッチ16とを有している。
外部電源コネクタ6は、商用電源等の外部電源18が接続されるコネクタであり、外部電源18の電力が充電器8に入力されている。
さらに詳述すると、充電器8には、蓄電池部2及び外部負荷19が並列に接続されており、これら蓄電池部2及び外部負荷19により並列回路9が構成されている。そして、充電器8は、この並列回路9に電圧αを印加することで、蓄電池部2に直流の充電電流Icを供給し、また、外部負荷19に電力を供給する。
外部電源18に停電が発生すると、蓄電池部2及び外部負荷19から成る並列回路9からみて充電器8がハイインピーダンス状態になるため、蓄電池部2及び外部負荷19が自動的に直列に接続され、蓄電池部2から外部負荷19に畜電力が供給される。
電流検出器12は、充電器8と蓄電池部2とを接続した直列回路上に介挿され、この蓄電池部2から充電器8に向う充電電流Icを検出し、充電器コントローラー10に出力するものである。
表示器14は、充電器コントローラー10の制御の下、例えば充電状態等の各種情報を表示する。
遮断スイッチ16は、蓄電池部2の放電を停止するための常閉スイッチであり、充電器8と蓄電池部2とを接続した直列回路上に介挿され、充電器コントローラー10の制御の下、蓄電池部2が外部負荷19に電力を供給しているときに、当該蓄電池部2の過放電を防止するために開成する。これにより、蓄電池部2から外部負荷19への電力供給等に伴う放電が停止され過放電が防止される。
しかし蓄電池部2と外部負荷19との間を常時導通状態で保持すると、蓄電池部2の非充電時には、当該蓄電池部2の蓄電力が外部負荷19に供給されてしまう。そこで、充電装置1は、非充電時には、蓄電池部2に流入する充電電流Icを略ゼロに維持するゼロ電流充電を行うことで、蓄電池部2から外部負荷19に電力が供給され無駄に放電されるのを防止する。
具体的には、非充電時において、充電器コントローラー10は、電流検出器12の検出値に基づいて、蓄電池部2に流入する充電電流Icが略ゼロに維持されるように、並列回路9に印加する電圧αをフィードバック制御する。この結果、電圧αと蓄電池部2の電圧との差圧が略等しくなって蓄電池部2への充電電流Icが略ゼロになり、この状態が保持されて蓄電池部2から外部負荷19への蓄電力の供給が停止状態で保持される。
蓄電池部2は、n個(n≧2)の二次電池(セル)22を直列に接続してなる電池組24と、過充電保護回路(バランス回路)26とを有する。二次電池22は例えばリチウムイオン電池の一例たるリチウムポリマー電池である。この他にも、ニッケル水素電池、ニッケルカドミウム電池等の任意の密閉型の二次電池を用いることが可能である。ただし、電池組24を構成する二次電池22は全て同一種の二次電池とする。
蓄電池部2には、電池組24の陽極に電気的に接続される陽極端子30、及び電池組24の負極に電気的に接続される陰極端子32が設けられており、これら陽極端子30及び陰極端子32が上記充電器部4に電気的に接続されている。充電時には、充電器部4から陽極端子30を介して電池組24に充電電流Icが供給されて電池組24の充電が行われる。
放電ルート回路34は、経路中に放電抵抗(バランス抵抗)40及びスイッチング素子42を直列に接続した回路である。スイッチング素子42は常開接点であり、二次電池22の電池電圧Vbが過充電保護電圧Vth1に達した場合に閉成する。この過充電保護電圧Vth1は、二次電池22の種類に応じた満充電電圧Vmよりも低い値(例えば満充電電圧Vmの90%の値)に設定されたものであり、二次電池22がリチウムポリマー電池の場合は例えば満充電とみなされる4.2Vを超えない値である。
二次電池22の放電中においては、その二次電池22に流入する充電電流Icが放電ルート回路34にバイパスされ、後段の二次電池22に導入される。このときバイパスされる電流値は、放電抵抗40の抵抗値により決定される。
過充電保護用検出器44は、二次電池22の電池電圧Vbを検出し、この電池電圧Vbと上記の過充電保護電圧Vth1とを比較し、電池電圧Vbが過充電保護電圧Vth1を超えた場合に、スイッチング素子42を閉成して、二次電池22を放電ルート回路34へ放電させる。また、過充電保護用検出器44は、電池電圧Vbが保護停止電圧Vth2を下回った場合に、スイッチング素子42を開成して二次電池22の放電ルート回路34への放電を停止する。
充電器コントローラー10は、充電時において、開閉信号に基づいて、いずれかの二次電池22が放電ルート回路34へ放電を開始したことを検知した場合、当該放電ルート回路34への放電が停止されるまで充電電流Icを減少させる制御を行うが、かかる制御については後述する。
なお、本構成では、全ての二次電池22の電池電圧Vbが満充電電圧Vmに達するまで充電が継続されるが、いずれかの二次電池22の電池電圧Vbが許容された電圧の上限値(満充電電圧Vmよりも高い規定の値)に至った場合には、二次電池22への過充電を防止すべく蓄電池部2の充電が速やかに停止される構成とされている。
なお、この充電装置1は、電池組24の電池温度を検出するサーミスタ等の温度検出センサを有し、充電時に、電池組24の温度が所定温度(例えば、リチウムポリマー電池においては60度)を超えた場合に、充電を停止するように構成されている。
したがって、電池電圧Vbの検出精度が悪いと、放電ルート回路34への放電に合せた後述する充電電流Icの可変制御を正確に行うことができず、各二次電池22を満充電電圧Vmまで充電できない場合がある。また、二次電池22の電池電圧Vbが過少に検出されたとすると、満充電電圧Vmを超えて充電が継続されることとなり安全性の面から好ましくない。満充電電圧Vmを超えての充電を防止するためには、満充電電圧Vmよりも低い値で充電を停止させれば良いが、そうすると、二次電池22への充電量の低下を招く。
図2は、二次電池22の電池電圧Vbを検出するための電圧検出用抵抗器61の回路構成を示す図である。この図に示すように、電圧検出用抵抗器61は、二次電池22に並列に接続されており、複数個の固定抵抗素子63(図示例では14個)が直列に接続されて構成されている。充電時には、この電圧検出用抵抗器61の両端のノードNa、Nbの間には、二次電池22の電池電圧Vbに相当する電位差が生じ、この電位が充電完了検出器46のコンパレータ回路に入力され、リファレンス電圧としての満充電電圧Vmと比較される。
一般に、固定抵抗素子63は、製造ロットや温度等で抵抗値に多少のばらつきが生じているため、所定個数の固定抵抗素子63を直列接続したとしても、所望の抵抗値が得られない。これに対して本実施形態によれば、短絡器64を適宜に短絡させて電圧検出用抵抗器61を所望の抵抗値に調整することができる。これにより、各二次電池22の電池電圧Vbが正確に検出されるため、全ての二次電池22を満充電電圧Vmに正確に揃えて充電を終えることができる。
なお、電圧検出用抵抗器61には、可変抵抗70や容量71、固定抵抗素子72が適宜に並列に設けられている。特に可変抵抗70を設けることで、精度を高めることができる。
図3は充電装置1の充電処理を示すフローチャートであり、図4は充電装置1による充電パターンを示す図である。なお、図4には、充電時の電池電圧の上昇特性が異なる2つの二次電池22A、22Bについての充電パターンを示している。
充電開始条件が満足された場合(ステップS1:YES)、充電装置1は、電流値Iiniの充電電流Icを蓄電池部2に供給して充電を開始する(ステップS2)。すなわち、充電装置1は、電流検出器12による検出信号をサンプリングしながら充電電流Icの電流値が電流値Iiniになるように電池組24に印加する電圧αを調整する。図4に示すように、充電電流Icの供給が開始されて充電が始まると(時間t0)、電池組24の各二次電池22A、22Bの電池電圧Vbが充電初期電圧V0a、V0bから上昇を開始する。
これにより、図4に示すように、二次電池22Aの電池電圧Vbが過充電保護電圧Vth1に達した時間t1から充電電流Icの電流値が減少させられる。
二次電池22Aは、放電ルート回路34への放電、及び、充電電流Icの減少に伴い次第に電池電圧Vbを下げ、保護停止電圧Vth2まで下がると(時間t2)、二次電池22Aの過充電保護用検出器44がスイッチング素子42を開成し、二次電池22Aの放電ルート回路34への放電を停止する。この放電ルート回路34への放電停止は、開閉信号の充電器コントローラー10への出力により、充電器コントローラー10に検知される。
これにより、図4に示すように、二次電池22Aの電池電圧Vbが保護停止電圧Vth2に下がるまで充電電流Icが減少し、放電が停止したときの電流値に固定される。なお、充電電流Icを減少させた場合には、これに伴い、二次電池22Aのみならず他の二次電池22Bの電池電圧Vbも低下する。
そして以降、いずれかの二次電池22の放電ルート回路34への放電が検知されるごとに、その二次電池22の放電ルート回路34への放電が停止するまで充電電流Icを減少する、という処理が繰り返し行われる。この繰り返し回数は、二次電池22の充電時の電圧上昇特性の違いや劣化の度合い等により変動し、常に決まった回数の繰り返しが行われる訳では無い。
充電器コントローラー10は、図3に示すように、充電電流Icが充電下限電流値Ith以下になった事を検出すると(ステップS7:YES)、充電電流Icを充電下限電流値Ithに維持して充電を継続する(ステップS8)。
このようにして、全ての二次電池22の電池電圧Vbが満充電電圧Vmに達した場合には(ステップS9:YES)、充電開始(時間t0)から放電量Wdの約100%が充電されたこととなる。
このゼロ電流充電においては、蓄電池部2に流入する充電電流Icを略ゼロに維持するように、充電器8の電圧αがフィードバック制御される。これにより、蓄電池部2への充電が停止状態となると共に、蓄電池部2と外部負荷19とを導通状態で保持しつつ蓄電池部2から外部負荷19への畜電力の供給を停止した状態に保持する。
なお、ステップS10及びS11のそれぞれの処理は、順序を逆にしても良い。
また、満充電電圧Vmは、従来の充電装置に設定されている充電完了電圧よりも高いため、満充電状態では、放電ルート回路34に流れる電流も比較的大きくなり発熱の問題が生じる。これに対して、本実施形態によれば、放電ルート回路34が二次電池22から切断されるため、このような問題が生じることがない。
さらに、非充電時には、充電器8が並列回路9に印加する電圧αを、電池組24に流入する充電電流Icを略ゼロに維持するに制御するため、電池組24から外部負荷19に電力が供給されることがなく、当該電池組24の無駄な放電が防止される。
Claims (4)
- 複数の二次電池が直列に接続された電池組に充電電流を供給して充電する充電装置において、
充電中に前記二次電池の電池電圧が所定電圧を超えた場合に、該二次電池に供給される充電電流を放電する放電ルート回路を、前記二次電池ごとに備えるとともに、
充電完了後に、前記二次電池の各々から前記放電ルート回路を切断する切断手段を備えたことを特徴とする充電装置。 - いずれかの前記二次電池が放電ルート回路に放電を開始した場合には、放電を開始した二次電池の放電ルート回路への放電が停止するまで前記充電電流を減少させ充電を継続する充電制御手段を備えたことを特徴とする請求項1に記載の充電装置。
- 複数の二次電池が直列に接続された電池組に充電電流を供給して充電する充電装置において、
前記二次電池の電池電圧を検出するための電圧検出用抵抗器と、
前記二次電池ごとに設けられ、充電中に前記二次電池の電池電圧が所定電圧を超えた場合に、該二次電池に供給される充電電流を放電する放電ルート回路と、
いずれかの前記二次電池が放電ルート回路に放電を開始した場合には、放電を開始した二次電池の放電ルート回路への放電が停止するまで前記充電電流を減少させ充電を継続する充電制御手段とを備え、
前記電圧検出用抵抗器は、直列に接続された複数の抵抗素子を有し、各抵抗素子を個別に短絡する短絡器を備えたことを特徴とする充電装置。 - 前記電池組、及び外部負荷が並列接続された並列回路に外部電力を供給し、前記電池組の充電、及び前記外部負荷への電力供給を行う充電器を備え、
非充電時には、前記電池組及び前記外部負荷を導通させた状態で維持しつつ、前記充電器が前記並列回路に印加する電圧を、前記電池組に流入する充電電流を略ゼロに維持するように制御することを特徴とする請求項1乃至3のいずれかに記載の充電装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020117022899A KR101526646B1 (ko) | 2009-03-31 | 2009-03-31 | 충전 장치 |
JP2011506839A JP5618986B2 (ja) | 2009-03-31 | 2009-03-31 | 充電装置 |
CN200980158409.3A CN102365804B (zh) | 2009-03-31 | 2009-03-31 | 充电装置 |
US13/255,566 US8975870B2 (en) | 2009-03-31 | 2009-03-31 | Charging device |
EP09842564.8A EP2416469A4 (en) | 2009-03-31 | 2009-03-31 | CHARGER |
PCT/JP2009/001473 WO2010113206A1 (ja) | 2009-03-31 | 2009-03-31 | 充電装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2009/001473 WO2010113206A1 (ja) | 2009-03-31 | 2009-03-31 | 充電装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010113206A1 true WO2010113206A1 (ja) | 2010-10-07 |
Family
ID=42827541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/001473 WO2010113206A1 (ja) | 2009-03-31 | 2009-03-31 | 充電装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8975870B2 (ja) |
EP (1) | EP2416469A4 (ja) |
JP (1) | JP5618986B2 (ja) |
KR (1) | KR101526646B1 (ja) |
CN (1) | CN102365804B (ja) |
WO (1) | WO2010113206A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2012036086A1 (ja) * | 2010-09-14 | 2014-02-03 | ソニー株式会社 | 蓄電ユニット群、充電器、電子機器、電動車両、蓄電ユニット群の充電方法及び放電方法、電力供給・受給方法、並びに、蓄電ユニット群における充放電ルート決定方法 |
JP2014146418A (ja) * | 2013-01-25 | 2014-08-14 | Toyota Motor Corp | 組電池の処理装置及び組電池の処理方法 |
JP2015534458A (ja) * | 2012-08-24 | 2015-12-03 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | 充電デバイスを含むポータブル電子システムおよび二次電池を充電する方法 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101826745B (zh) * | 2010-05-18 | 2014-06-04 | 郁百超 | 锂离子动力电池无损充电机 |
DE102010029427A1 (de) * | 2010-05-28 | 2011-12-01 | Siemens Aktiengesellschaft | Energiespeicheranordnung |
US20130221906A1 (en) * | 2010-08-06 | 2013-08-29 | Hpv Technologies, Inc. | Lithium Polymer Battery Charger and Methods Therefor |
JP2014018034A (ja) * | 2012-07-11 | 2014-01-30 | Makita Corp | バッテリパック |
US9276421B2 (en) | 2012-10-31 | 2016-03-01 | Motorola Solutions, Inc. | Portable rechargeable battery pack and external adapter for same |
US9097775B2 (en) | 2012-11-13 | 2015-08-04 | Motorola Solutions, Inc. | Apparatus and method for discharging a battery and determining a condition of the battery |
US9337667B2 (en) | 2013-02-28 | 2016-05-10 | Motorola Solutions, Inc. | External adapter for battery pack used to power a portable device |
CN104037462B (zh) * | 2013-03-08 | 2016-04-27 | 华硕电脑股份有限公司 | 电池模块及过充电保护方法 |
US8901888B1 (en) | 2013-07-16 | 2014-12-02 | Christopher V. Beckman | Batteries for optimizing output and charge balance with adjustable, exportable and addressable characteristics |
AU2018205364B2 (en) | 2017-01-09 | 2021-05-27 | Milwaukee Electric Tool Corporation | Battery pack |
CN107204493B (zh) | 2017-04-28 | 2020-09-29 | 宁德时代新能源科技股份有限公司 | 电池充电方法、装置和设备 |
CN110797925B (zh) * | 2018-08-01 | 2021-08-03 | Oppo广东移动通信有限公司 | 电池控制***和方法、电子设备 |
WO2020137815A1 (ja) * | 2018-12-25 | 2020-07-02 | 三洋電機株式会社 | 待機用電源装置及び二次電池の充電方法 |
US11145917B2 (en) * | 2019-02-11 | 2021-10-12 | International Business Machines Corporation | Cell balancing network to heat battery pack |
US11262408B2 (en) * | 2020-02-24 | 2022-03-01 | Ford Global Technologies, Llc | Vehicle traction battery over-discharge diagnosing method and assembly |
CN112886665B (zh) * | 2021-02-07 | 2022-10-28 | 中车青岛四方机车车辆股份有限公司 | 电池充电控制方法、***、车辆、可读存储介质及设备 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63180868A (ja) * | 1987-01-22 | 1988-07-25 | Sharp Corp | 電圧検出装置 |
JPH0533646U (ja) * | 1991-09-30 | 1993-04-30 | 日本電気株式会社 | 二次電源装置 |
JPH073251U (ja) * | 1993-06-14 | 1995-01-17 | 神鋼電機株式会社 | 電池を備えた移動可能な機器用の電源装置 |
JPH07264780A (ja) * | 1994-03-18 | 1995-10-13 | Nissan Motor Co Ltd | 組電池の充放電制御装置 |
JPH08140278A (ja) * | 1994-11-11 | 1996-05-31 | Nissan Motor Co Ltd | 組電池の充放電保護装置 |
JPH1050352A (ja) | 1996-07-30 | 1998-02-20 | Mitsumi Electric Co Ltd | セルバランス回路 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3086929B2 (ja) | 1991-07-29 | 2000-09-11 | マツダ株式会社 | エンジンの冷却構造 |
DE69208211T2 (de) * | 1991-11-11 | 1996-08-29 | Philips Electronics Nv | Anordnung zum Liefern elektrischer Energie zu einer Last |
JPH073251A (ja) | 1993-06-21 | 1995-01-06 | Eishiyou Kagaku Kogyo Kk | 起泡用エアゾール組成物 |
FR2725849B1 (fr) | 1994-10-18 | 1996-12-20 | Accumulateurs Fixes | Procede de regulation de la charge d'un ensemble accumulateur electrique et agencement mettant en oeuvre ce procede |
JP3402583B2 (ja) | 1998-10-20 | 2003-05-06 | 株式会社デンソー | 組み電池の電圧検出装置 |
FR2805934B1 (fr) * | 2000-03-01 | 2002-07-26 | Agence Spatiale Europeenne | Procede et dispositif d'equilibrage des charges d'une pluralite de cellules de batteries montees en serie |
JP2004524793A (ja) * | 2001-03-30 | 2004-08-12 | デザインライン・リミテッド | バッテリー管理ユニット、システム、および方法 |
FR2852149B1 (fr) * | 2003-03-04 | 2005-04-08 | Cit Alcatel | Dispositif et procede perfectionnes de controle de tension de generateurs electrochimiques de batterie rechargeable |
KR100553681B1 (ko) * | 2003-03-06 | 2006-02-24 | 삼성전자주식회사 | 전압 레귤레이터 회로 및 그것을 이용한 불 휘발성 반도체메모리 장치 |
KR101002480B1 (ko) * | 2003-12-06 | 2010-12-17 | 엘지전자 주식회사 | 휴대 단말용 충전 장치 및 그 방법 |
JP4065232B2 (ja) | 2003-12-11 | 2008-03-19 | 三洋電機株式会社 | 電池の充電方法 |
JP4186916B2 (ja) * | 2004-11-18 | 2008-11-26 | 株式会社デンソー | 組電池管理装置 |
JP4400536B2 (ja) * | 2004-12-27 | 2010-01-20 | 日産自動車株式会社 | 組電池の容量調整装置および容量調整方法 |
JP2007244142A (ja) | 2006-03-10 | 2007-09-20 | Hitachi Vehicle Energy Ltd | 電池群制御装置及び電池電源システム |
JP2007318950A (ja) * | 2006-05-27 | 2007-12-06 | Gs Yuasa Corporation:Kk | 二次電池のセル電圧バランス装置 |
JP4940817B2 (ja) * | 2006-08-04 | 2012-05-30 | パナソニック株式会社 | 蓄電装置 |
-
2009
- 2009-03-31 KR KR1020117022899A patent/KR101526646B1/ko not_active IP Right Cessation
- 2009-03-31 JP JP2011506839A patent/JP5618986B2/ja not_active Expired - Fee Related
- 2009-03-31 WO PCT/JP2009/001473 patent/WO2010113206A1/ja active Application Filing
- 2009-03-31 US US13/255,566 patent/US8975870B2/en not_active Expired - Fee Related
- 2009-03-31 EP EP09842564.8A patent/EP2416469A4/en not_active Withdrawn
- 2009-03-31 CN CN200980158409.3A patent/CN102365804B/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63180868A (ja) * | 1987-01-22 | 1988-07-25 | Sharp Corp | 電圧検出装置 |
JPH0533646U (ja) * | 1991-09-30 | 1993-04-30 | 日本電気株式会社 | 二次電源装置 |
JPH073251U (ja) * | 1993-06-14 | 1995-01-17 | 神鋼電機株式会社 | 電池を備えた移動可能な機器用の電源装置 |
JPH07264780A (ja) * | 1994-03-18 | 1995-10-13 | Nissan Motor Co Ltd | 組電池の充放電制御装置 |
JPH08140278A (ja) * | 1994-11-11 | 1996-05-31 | Nissan Motor Co Ltd | 組電池の充放電保護装置 |
JPH1050352A (ja) | 1996-07-30 | 1998-02-20 | Mitsumi Electric Co Ltd | セルバランス回路 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2416469A4 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2012036086A1 (ja) * | 2010-09-14 | 2014-02-03 | ソニー株式会社 | 蓄電ユニット群、充電器、電子機器、電動車両、蓄電ユニット群の充電方法及び放電方法、電力供給・受給方法、並びに、蓄電ユニット群における充放電ルート決定方法 |
JP5928826B2 (ja) * | 2010-09-14 | 2016-06-01 | ソニー株式会社 | 蓄電ユニット群、充電器、電子機器、電動車両、蓄電ユニット群の充電方法及び放電方法、電力供給・受給方法、並びに、蓄電ユニット群における充放電ルート決定方法 |
JP2015534458A (ja) * | 2012-08-24 | 2015-12-03 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | 充電デバイスを含むポータブル電子システムおよび二次電池を充電する方法 |
JP2014146418A (ja) * | 2013-01-25 | 2014-08-14 | Toyota Motor Corp | 組電池の処理装置及び組電池の処理方法 |
Also Published As
Publication number | Publication date |
---|---|
US20120001595A1 (en) | 2012-01-05 |
KR20120028296A (ko) | 2012-03-22 |
CN102365804A (zh) | 2012-02-29 |
CN102365804B (zh) | 2015-02-18 |
JPWO2010113206A1 (ja) | 2012-10-04 |
US8975870B2 (en) | 2015-03-10 |
EP2416469A4 (en) | 2014-09-10 |
JP5618986B2 (ja) | 2014-11-05 |
KR101526646B1 (ko) | 2015-06-08 |
EP2416469A1 (en) | 2012-02-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5618986B2 (ja) | 充電装置 | |
JP4865103B2 (ja) | 充電装置及び充電方法 | |
JP4499164B2 (ja) | 充電装置及び充電方法 | |
US7928691B2 (en) | Method and system for cell equalization with isolated charging sources | |
EP2418751B1 (en) | Battery charger and battery charging method | |
JP4966998B2 (ja) | 充電制御回路、電池パック、及び充電システム | |
KR102392376B1 (ko) | 배터리 시스템 | |
KR100885291B1 (ko) | 충전 장치 | |
US8232776B2 (en) | Charging method for an assembled cell and an assembled cell system | |
JP2011004509A5 (ja) | ||
US9906052B2 (en) | Power supply device | |
JP2010127722A (ja) | バッテリシステム | |
JP4112478B2 (ja) | 電池パックの充電装置 | |
JP5489779B2 (ja) | リチウムイオン組電池の充電システムおよび充電方法 | |
JP2011034784A (ja) | 二次電池装置 | |
WO2016035280A1 (ja) | バッテリーシステム、電動車両及びバッテリーシステムの充電方法 | |
JP2013146159A (ja) | 組電池の充電制御システムおよび充電制御方法 | |
JP2002010504A (ja) | 電気自動車の電源装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980158409.3 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09842564 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011506839 Country of ref document: JP |
|
REEP | Request for entry into the european phase |
Ref document number: 2009842564 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13255566 Country of ref document: US Ref document number: 2009842564 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20117022899 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |