WO2013038898A1 - 電圧監視回路及び該電圧監視回路を搭載した車両 - Google Patents
電圧監視回路及び該電圧監視回路を搭載した車両 Download PDFInfo
- Publication number
- WO2013038898A1 WO2013038898A1 PCT/JP2012/071661 JP2012071661W WO2013038898A1 WO 2013038898 A1 WO2013038898 A1 WO 2013038898A1 JP 2012071661 W JP2012071661 W JP 2012071661W WO 2013038898 A1 WO2013038898 A1 WO 2013038898A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- potential
- monitoring circuit
- switch
- wiring
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/19—Switching between serial connection and parallel connection of battery modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
-
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
-
- 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
- H02J7/00308—Overvoltage protection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
-
- 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
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Definitions
- the present invention provides a battery module (also referred to as an assembled battery) in which cells of a plurality of rechargeable secondary batteries are connected in series, and a current cutoff switch is provided between at least one set of adjacent cells among the cells.
- the voltage monitoring circuit for monitoring the voltage of each of the cells and a vehicle equipped with the voltage monitoring circuit.
- a motor such as an electric vehicle (EV), a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHEV), or a fuel cell vehicle (FCV), a plurality of chargeable / dischargeable
- a motor such as an electric vehicle (EV), a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHEV), or a fuel cell vehicle (FCV)
- a battery module assembled battery
- FCV fuel cell vehicle
- the voltage indicating the remaining capacity of each cell constituting the battery module is constantly monitored by a voltage monitoring circuit.
- JP-A-2005-44523 a storage battery having a structure that shuts off the battery is used ⁇ refer to FIGS. 2 and 4 of JP-A-2005-44523 (hereinafter referred to as JP2005-44523A) ⁇ .
- JP-A-2005-292137 As the voltage monitoring circuit, a positive electrode terminal and a negative electrode terminal of each cell connected in series and the voltage monitoring circuit are connected by a large number of wires, and the voltage of each cell is set to a differential that constitutes the voltage monitoring circuit.
- an amplifier op amp
- the terminal voltage of each cell is input to the voltage monitoring circuit when the current cutoff switch is in a closed state, The voltage of each cell is detected.
- the battery module 102 (for the convenience of understanding, the number of cells 104 is four) is positioned in the middle of the battery module 102 during discharge from the load 103.
- the current cut-off switch 106 current cut-off mechanism
- the detection wires 108 and 110 on both sides sandwiching the current cut-off switch 106 are arranged. Is connected between the input terminals of the voltage detection unit of the voltage monitoring circuit 112 to which the current interruption switch 106 is connected from the combined voltage 4 ⁇ V1 (in practice, for example, several hundred volts) of the battery module.
- a high voltage (4 ⁇ V1 ⁇ V1) obtained by subtracting the cell voltage (in practice, for example, several volts) is applied with the reverse polarity.
- Whether the current cutoff switches 106 and 116 of the voltage monitoring circuits 112 and 118 according to the examples of FIGS. 10A, 10B, and 11 are in the open state is determined, for example, by indicating that the detected voltage value indicates an abnormal range.
- a vehicle control device (not shown) opens a contactor (not shown) that supplies power from the battery modules 102 and 122 to the load 103 or an inverter (not shown). By performing a fail-safe operation such as stopping), it is possible to prevent application of a high voltage outside the rating to the voltage monitoring circuits 112 and 118.
- the differential amplifier When such a high voltage is applied between the input terminals of the differential amplifier constituting the voltage detectors of the voltage monitoring circuits 112 and 118, the differential amplifier may be damaged by overvoltage.
- the present invention has been made in consideration of such a problem, and even if a current cutoff switch provided in a battery module configured by connecting a plurality of cells in series is opened, the voltage monitoring circuit is provided. It is an object of the present invention to provide a voltage monitoring circuit in which a high voltage is not applied and a vehicle equipped with the voltage monitoring circuit.
- N cells that can be charged / discharged are connected in series, and a current cutoff switch is provided between at least one set of adjacent cells, and the maximum potential and the minimum
- a voltage monitoring circuit that monitors the voltage of each cell by connecting N + 1 wirings from the positive terminal and the negative terminal of each cell of the battery module to which a load is connected between the potentials, the N + 1 wirings
- a switching element inserted in series in each wiring excluding the wiring of the maximum potential or the minimum potential, and opened and closed by a control signal of a control line branched from an adjacent wiring, and the switching element includes the switching element
- a resistance element is inserted in series between the control input terminal (also referred to as a control terminal) and the adjacent wiring
- An antifuse element is connected between the control input terminal and each of the wirings interrupted by opening / closing of the switch element.
- the maximum potential or A switch element inserted in series in each wiring except the wiring of the minimum potential and opened / closed by a control signal of a control line branched from an adjacent wiring is provided, and the control line includes the control input terminal of the switch element and the adjacent A resistance element is inserted in series between the wirings to be connected, and an antifuse element is connected between the control input terminal and each of the wirings that is interrupted by opening and closing of the switch element.
- the switch element is opened by applying a voltage to the switch element with a reverse polarity, and the current cut-off switch
- the antifuse element is short-circuited by applying a voltage to the switch element with forward polarity.
- the switch element is also opened. . Therefore, when the current interrupting switch is in the open state, a high voltage is not applied to the voltage monitoring circuit regardless of whether the battery module is discharging or charging.
- the switch element is a semiconductor switch that is closed when a voltage applied to the control input terminal is a positive voltage, and the semiconductor switch is inserted into N wires excluding the wire having the maximum potential, One that is closed by the potential of the control line branched from the wiring adjacent to the higher side can be selected.
- the switch element is a semiconductor switch that is closed when a voltage applied to the control input terminal is a negative voltage, and the semiconductor switch is inserted into N wires other than the wire having the minimum potential, You may select what is closed by the electric potential of the said control line branched from the said wiring adjacent to a low side.
- a charging means (charging unit) may be connected between the maximum potential and the minimum potential of the battery module so that the battery module can be charged.
- a vehicle equipped with this voltage monitoring circuit is also included in the present invention.
- an electric vehicle (EV), a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHEV), a fuel cell vehicle (FCV) or the like that travels at least by the driving force of a motor is applied.
- the switch element and the antifuse element in the battery module, even if the current interrupting switch provided in the battery module configured by connecting a plurality of cells in series is opened, the voltage It is possible to prevent a high voltage from being applied to the monitoring circuit.
- FIG. 1 is an electric circuit diagram of a hybrid vehicle equipped with a voltage monitoring circuit according to an embodiment of the present invention. It is an electric circuit diagram of the voltage monitoring circuit which concerns on one Embodiment. It is an electric circuit diagram of the voltage monitoring circuit which concerns on the modification of one Embodiment. It is an electric circuit diagram with which the operation
- FIG. 10A is a circuit diagram when the current interrupting switch provided for explaining the problem is in a closed state
- FIG. 10B is when the current interrupting switch provided for explaining the problem is opened.
- It is a circuit diagram. It is a circuit diagram which shows the structural example of the battery module which provided the switch for electric current interruption for every cell.
- FIG. 1 shows a schematic configuration of a hybrid vehicle (HEV) 12 equipped with a voltage monitoring circuit 10 according to an embodiment of the present invention.
- HEV hybrid vehicle
- the HEV 12 is a motor-assisted hybrid vehicle, and includes an engine 14.
- the motor 14 functions as a motor (electric motor) and a generator (generator), and a transmission (T / M) 18.
- the motor 14 are connected together via a crankshaft (not shown), and drive wheels (not shown) are driven by the output of the transmission 18.
- the control device 20 is connected to each component of the HEV 12 including the voltage monitoring circuit 10, controls the entire HEV 12, and controls charging / discharging of the battery module 30.
- a battery module 30 as an assembled battery includes N cells 32 that are chargeable / dischargeable secondary batteries connected in series, and a maintenance switch between at least one pair of adjacent cells 32p and 32q whose potential is near the midpoint.
- a series circuit of a current cut-off switch 34 and a fuse 36, which are used as the same, is provided. The current cutoff switch 34 is closed except during maintenance (normal time).
- the load 50 is connected between the maximum potential Vmax and the minimum potential Vmin of the battery module 30 via the contactors 40, 42, and 44.
- the contactor 44 is connected with a known resistance element 52 for preventing an excessive inrush current in series.
- the load 50 includes an inverter 54 (DC and three-phase AC voltage converter) and a motor 16.
- a + 12V low voltage battery 58 is connected to the DC side of the inverter 54 through a step-down DC / DC converter 56.
- the motor 16 When the motor 16 is powered, the power from the battery module 30 is supplied to the motor 16 through the contactors 40 and 42 and the inverter 54 (discharge mode of the battery module 30). When the motor 16 is regenerated during deceleration, the generated power of the motor 16 Is supplied to the battery module 30 through the inverter 54 and the contactors 40 and 42 (charging mode of the battery module 30).
- FIG. 2 shows the configuration of the voltage monitoring circuit 10.
- the battery module 30 is drawn as six cells 32 including the adjacent cells 32 p and 32 q described above.
- the fuse 36 is omitted.
- the voltage (electromotive force) of each cell 32 is assumed to be a cell voltage (voltage) Es for convenience. 2 shows a state in which the contactors 40 and 42 (not shown in FIG. 2) shown in FIG. 1 are closed and the battery module 30 and the load 50 are connected.
- the voltage monitoring circuit 10 includes a voltage detection unit 70 including a differential amplifier and an A / D converter (not shown), and N (six) semiconductor switch blocks 72.
- a resistor 84 having a resistance value r drawn in the voltage detection unit 70 means an internal impedance component (in practice, a parallel circuit of the resistor 84 having a resistance value r and a distributed capacitor).
- the resistor 84 is also referred to as an internal impedance component 84.
- N + 1 (6 + 1) wires (voltage detection) from the positive terminal and the negative terminal of each cell 32 of the battery module 30 to which the load 50 (including the inverter 54 and the motor 16) is connected between the maximum potential Vmax and the minimum potential Vmin. 74 is also connected to the voltage detector 70.
- the semiconductor switch block 72 is inserted in series into the N wirings 74.
- the wiring 74 having the maximum potential Vmax is directly connected to the voltage detection unit 70, and the wiring 74 having the maximum potential Vmax is excluded.
- the semiconductor switch block 72 is connected in series to the other wiring 74 (wiring AA ′, wiring BB ′, wiring CC ′, wiring EE ′, wiring FF ′ and wiring GG ′). Is inserted.
- Each semiconductor switch block 72 has the same configuration including circuit constants, and includes a switch element 76, an antifuse element 78 (AF1 to AF6), and a resistance element 80 (R1 to R6).
- the switch element 76 the source electrodes and the gate electrodes are commonly connected, one drain electrode is connected to the cell 32 ⁇ nodes A to C, E to G) ⁇ , and the other drain electrode is connected to the voltage detection unit 70 ⁇ node.
- Two n-type MOSFETs connected to A ′ to C ′ and E ′ to G ′ ⁇ (conduct when the gate electrode becomes a positive potential with respect to the source electrode) (Q1 and Q2, Q3 and Q4, Q5 And Q6, Q7 and Q8, Q9 and Q10, and Q11 and Q12, which are written as Qn and Qn + 1, respectively).
- a parasitic diode is formed in the direction from the source electrode to the drain electrode of each of the nMOSFETs Qn and Qn + 1.
- Two nMOSFETs Qn and Qn + 1 as the switch element 76 are connected in series in the reverse direction.
- the switch element 76 is also referred to as series-reversely connected nMOSFETs Qn and Qn + 1.
- an antifuse element 78 is connected between the common source electrode and the common gate electrode of the switch element 76 (series reversely connected nMOSFETs Qn and Qn + 1), and a resistance is provided between the common gate electrode and the one-potential wiring 74.
- the element 80 (R1 to R6) is connected.
- the antifuse element 78 is an element in which the resistance value of the antifuse element 78 changes irreversibly from a high resistance state to a low resistance state when the voltage applied to both ends thereof exceeds the threshold voltage Vth.
- the cutoff switch 34 When the cutoff switch 34 is closed, the voltage applied to both ends of the antifuse element 78 is set so as not to exceed the threshold voltage Vth.
- the common gate electrode of the switch element 76 is a control terminal (also referred to as a control input terminal) 82, and depends on the levels of control signals S 1 to S 6 supplied (applied) to the control terminal 82 through the resistance element 80.
- the opening / closing of the switch element 76 (off / on of the nMOSFETs Qn and Qn + 1 connected in series reverse direction) is controlled.
- each cell 32 is connected in parallel with a resistor (input resistance) of the resistance value r of the voltage detector 70 described above. ) 84 will be connected. Then, the cell voltage Es of each cell 32 appears at both ends of the resistance value r. This cell voltage Es is detected by the voltage detector 70.
- the switch element 76 conducts at a negative potential (also referred to as an on state or a closed state) p-type MOSFET (conducts when the gate electrode becomes a negative potential with respect to the source electrode).
- the semiconductor switch block 72 has a switch element 76A (pMOSFETs Qn and Qn + 1 connected in series reverse direction), and each of the N detection lines excluding the voltage detection line of the minimum potential Vmin.
- the voltage monitoring circuit 10A includes a semiconductor switch block 72A to be inserted, and a negative voltage is applied as a control signal S1 to S6 from the adjacent negative potential side wiring through each resistance element 80.
- each switch element 76 nMOSFETs Qn and Qn + 1 connected in series reverse direction
- the voltage drops below the potential of the source electrode (wiring EE ′) through the resistance element 80 (R4), so that the switch elements 76 (nMOSFETs Q7 and Q8) constituting the semiconductor switch block 72 between the wirings EE ′ are closed. Transition from open to open state.
- the potential of the node E ′ (the potential + 2Es obtained by dividing the potential + 4Es of the node F ′ on the basis of the node C ′ by the resistance values r and r between the nodes C ′ and F ′) is the wiring FF.
- the switch element 76 (nMOSFETs Q9 and Q10) constituting the semiconductor switch block 72 connected in series to the wiring FF ′ is changed from the closed state to the open state. .
- the switch element 76 (nMOSFETs Q11 and Q12) connected in series to the wiring GG ′ is changed from the closed state to the open state.
- the charging current from the load 50 does not flow to the battery module 30, so that the open voltage Eregopen which is the regenerative voltage of the load 50 (regenerative power supply) is as shown in FIG.
- the voltage is applied to both ends of the battery module 30.
- the open circuit voltage Eregopen of the regenerative voltage may be higher than the series voltage 6 ⁇ Es [V] (terminal voltage Vmax ⁇ Vmin) of the battery module 30 (Eregopen >> 6 ⁇ Es).
- the node G in FIG. 4 is set to the reference potential 0 [V]
- a potential of Eregopen-3 ⁇ Es is generated in the wiring CC ′ (node C)
- the wiring EE ′ (node E) is generated.
- the potential of the wiring CC ′ (node C) (Eregopen-3 ⁇ Es) is equal to the wiring E ⁇ . It becomes much higher than the potential 2Es of E ′ (node E) ⁇ (Eregopen-3 ⁇ Es) >> 2Es ⁇ .
- the antifuse element 78 inserted between the gate and source electrodes of the switch elements 76 (nMOSFETs Q7 and Q8) transitions to the low resistance state
- the gate source electrodes of the nMOSFETs Q7 and Q8 that are the switch elements 76 Since the voltage between the wires EE ′ is substantially 0 [V], the switch element 76 (nMOSFETs Q7 and Q8) between the wires EE ′ changes from the closed state (on state) to the open state (off state), and the wire EE ′. Since only the parasitic diodes connected in series face-to-face (in the opposite direction) are connected to each other, the switch element 76 is completely opened.
- the potential of the node E ′ is determined by the voltage dividing ratio by the voltage between the node C ′ and the node F ′ and the internal impedance component 84 of the voltage detection unit 70. Transition to a fixed potential.
- the voltage (potential difference) between the node E ′ and the wiring FF ′ becomes large, the antifuse element 78 (AF5) becomes conductive, and the switch elements 76 (nMOSFETs Q9 and Q10) are opened. Similarly, the antifuse element 78 (AF6) is sequentially turned on, and the switch elements 76 (nMOSFETs Q11 and Q12) are also opened.
- the voltage monitoring circuit 10A adopting a p-type MOSFET in which the switch element 76A shown in FIG. 3 conducts at a negative potential (conducts when the gate electrode becomes a negative potential with respect to the source electrode) is also an n-type.
- protection is performed at the time of discharging and charging.
- the operation of the voltage monitoring circuit 10A of FIG. The protection operation of the voltage monitoring circuit 10A when the battery module 30 is discharged and (IV) the protection operation of the voltage monitoring circuit 10A when the battery module 30 is charged (regenerative charging) will be described in this order.
- each switch element 76A connected in series to each of the wirings AA ′, BB ′, CC ′, DD ′, and FF ′.
- the closed state (ON state) of the (series reverse connection pMOSFETs Qn and Qn + 1) remains unchanged, as described with reference to FIG. 10B, the potential of the wiring DD ′ is set to the reference potential 0 [V] and the wiring E
- This change causes the switch element 76A (pMOSFETs Q7 and Q8) between the wirings DD ′ to be the resistance element 80 (R4). Transition from closed to open.
- the switch element 76A (pMOSFETs Q7 and Q8) transitions from the closed state to the open state, the potential of the node D ′ is changed from 0 [V] to +3 Es ⁇ the potential of the node E ′ +5 Es and the potential Es of the node C ′ and the node C ′.
- the switch element 76A (pMOSFETs Q5 and Q6) between the wirings CC ′ is connected to the resistance element 80 (pMOSFET Q5, Q6) toward the divided potential of the internal impedance component 84 (r and r) of the voltage detection unit 70 between the nodes E ′. Transition from the closed state to the open state through R3).
- the switch element 76A (pMOSFETs Q5 and Q6) transitions from the closed state to the open state, the potential of the node C ′ changes from + Es to + 3Es ⁇ the potential of the node E ′ + 5Es and the potential of the node B ′ + 2Es, and the node B ′ and the node E ′.
- the switch element 76A (pMOSFETs Q3 and Q4) between the wirings BB ′ is connected to the resistance element 80 (R2) toward the divided potential of the internal impedance component 84 (r, r, and r) of the voltage detector 70 between them. ) Through the closed state to the open state.
- the switch element 76A (pMOSFETs Q3 and Q4) transitions from the closed state to the open state, the potential of the node B ′ is changed from +2 Es to +3.5 Es ⁇ the potential of the node E ′ +5 Es and the potential of the node A ′ +3 Es, and the node A ′ and the node
- the switch element 76A (pMOSFETs Q1 and Q2) between the wirings AA ′ has a resistance toward the internal impedance component 84 (ratio r, r, r, and r) of the voltage detection unit 70 between E ′.
- a transition is made from the closed state to the open state through the element 80 (R1).
- the charging current from the load 50 (regenerative power supply) does not flow to the battery module 30, so the regenerative voltage of the load 50 (regenerative power supply) becomes the open voltage Eregopen.
- the open voltage Eregopen of the regenerative voltage is higher than the series voltage 6 ⁇ Es [V] of the battery module 30 (Eregopen >> 6 ⁇ Es), and therefore the node G in FIG. 3 is set to the reference potential 0 [V].
- an Eregopen-3 ⁇ Es potential is generated in the wiring DD ′ (node D), and a potential of 2 ⁇ Es is generated in the wiring EE ′ (node E) using the node G as a reference potential. Therefore, the potential (Eregopen-3 ⁇ Es) of the wiring DD ′ (point D) becomes higher than the potential 2Es of the node E ⁇ (Eregopen-3 ⁇ Es)> 2Es ⁇ .
- the voltage applied to the control terminal 82 of the switch element 76A inserted between the wirings DD ′ remains negative, and the switch element 76A continues to be closed.
- the antifuse element 78 AF4 is not inserted, the voltage detection unit 70 is damaged when the potential difference between the node E ′ and the node F ′ increases and becomes larger than the input withstand voltage Vinmax.
- the switch element 76A pMOSFETs Q7, Q8
- the wiring DD ′ is connected only by a parasitic diode connected in series facing each other, that is, An open state is formed in which the line DD ′ is disconnected.
- the potential of the node D ′ becomes a potential determined by the voltage ratio between the voltage between the node C ′ and the node E ′ and the internal impedance component 84 of the voltage detector 70. Transition.
- each switch element 76A including the antifuse elements AF1, AF2, AF3, and AF4 is opened, and the voltage detection unit 70 is protected without being applied with a high voltage.
- FIG. 5 shows a schematic configuration of a voltage monitoring circuit 10B according to another embodiment of the present invention.
- a capacitor 90 is arranged in parallel with each of the resistance elements 80 (R1 to R6) that connect the voltage detection line adjacent to the gate electrode of the semiconductor switch block 72B. Only the point differs from the voltage monitoring circuit 10 of FIG.
- FIG. 5 the same components as those shown in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
- FIG. 5 The operation of the voltage monitoring circuit 10B shown in FIG. 5 according to another embodiment will be described in comparison with the operation of the voltage monitoring circuit 10 in the example of FIG. 2.
- FIG. 6A As shown in FIG. 6A, at time t0, the potential of the node C ′ is changed to the wiring EE by circuit interruption that opens the current interruption switch 34 during charging of the battery module 30 shown (eg, during regeneration of the motor 16).
- the time until the antifuse element 78 (AF4) is short-circuited is delayed from the time point t0 to the time point t4, the time until the nMOSFETs Q7 and Q8 cut off the wiring EE ′ is lengthened, and the node C ′ and the wiring If the voltage between EE ′ does not increase, the short circuit operation (transition from the open state to the short circuit state) of the antifuse element 78 (AF4) is delayed.
- the capacitor 90 is arranged in parallel with the resistance elements 80 (R1 to R6), so that the leakage current of the antifuse element 78 (AF4) is caused.
- the increase in the voltage between the terminals of the resistance element 80 (R4) can be suppressed.
- the rise of the voltage across the antifuse element 78 (AF4) can be accelerated, so the time from the closed state to the open state of the switch element 76 of the semiconductor switch block 72B is from time t0 to time t4 shown in FIG. 6A.
- the voltage applied to the voltage detector 70 can be suppressed to a smaller value from the voltage Vca (without the capacitor 90) shown in FIG. 6A to the voltage Vcb (with the capacitor 90) shown in FIG. 6B. .
- N cells 32 that can be charged and discharged are connected in series, and at least one set of adjacent cells 32 is adjacent.
- a current cutoff switch 34 is provided between the cells 32p and 32q, and N + 1 wires are connected from the positive terminal and the negative terminal of each cell 32 of the battery module 30 to which the load 50 is connected between the maximum potential Vmax and the minimum potential Vmin.
- a control line that is inserted in series in each of the N + 1 wirings except the wiring having the maximum potential Vmax or the wiring having the minimum potential Vmin and branches from the adjacent wiring
- the switch element 76 is opened and closed by the control signals S1 to S6, and the control line includes a resistance element 8 between the control terminal 82 of the switch element 76 and the adjacent wiring. (R1 to R6) are inserted in series, and the antifuse element 78 (AF1 to AF6) is connected between the control terminal 82 and each of the wirings interrupted by opening and closing of the switch element 76. did.
- the voltage monitoring circuits 10, 10 ⁇ / b> A, 10 ⁇ / b> B (voltage detection) are connected from the positive terminal and the negative terminal of each cell 32 of the battery module 30 to which the load 50 is connected between the maximum potential Vmax and the minimum potential Vmin.
- the control signals S1 to S6 are inserted in series in each wiring except the wiring having the maximum potential Vmax or the wiring having the minimum potential Vmin and branch from the adjacent wiring.
- a switch element 76 that opens and closes is provided.
- a resistance element 80 (R1 to R6) is inserted in series between the control terminal 82 of the switch element 76 and the adjacent wiring.
- Antifuse elements 78 (AF1 to AF6) are connected between the wirings that are intermittently opened and closed.
- n-type semiconductor switch such as the nMOSFETs Qn and Qn + 1 in FIGS. 2 and 5
- the n-type semiconductor is used as the switch element 76.
- the switches are inserted into N wirings excluding the wiring having the maximum potential Vmax, and are closed by the potentials of the control lines (control signals S1 to S6) branched from the wiring adjacent to the higher potential side.
- control lines control signals S1 to S6 branched from the wiring adjacent to the low potential side are inserted into the N wirings excluding the Vmin wiring, and are closed.
- a motor 16 (charging means, charging unit) that also functions as a power generator is connected between the maximum potential Vmax and the minimum potential Vmin of the battery module 30 (FIG. 1), and the battery module 30 can be charged. It may be.
- a motor 16 (FIGS. 1 and 9: described later), an engine 14 and a generator 91 (FIG. 7: described later), or an FC stack 94 (FIG. 8: described later) may be used. .
- the engine 14 is a hybrid vehicle (HEV) that exclusively drives a generator (G) 91 to charge the battery module 30 by the DC / DC converter 93 or drives the motor 16. ) Applicable to 12A.
- the engine 14 and the generator 91 constitute a charging means (charging unit).
- a fuel cell stack (FC stack) 94, a diode 96, and a DC / DC converter 98 are provided, and the fuel for driving the motor 16 and charging the battery module 30 through the DC / DC converter 98 is provided. It can be applied to a battery car (FCV) 100.
- FCV battery car
- the motor 16 and the inverter 54, and the FC stack 94 and the DC / DC converter 98 constitute a charging means (charging unit).
- the present invention can be applied to an electric vehicle (EV) 120 including an AC plug (power plug) 113 and an AC / DC converter 114.
- EV electric vehicle
- AC plug power plug
- AC / DC converter AC / DC converter
- the present invention is also applicable to a plug-in hybrid vehicle (PHEV) including the AC plug (power plug) 113 and the AC / DC converter 114 shown in FIG.
- PHEV plug-in hybrid vehicle
Abstract
Description
前記制御入力端子と前記スイッチ素子の開閉により断続される前記各配線との間にアンチフューズ素子が接続されたことを特徴とする。
図1、図2において、電流遮断用スイッチ34が閉じられているモータ16の力行時等、電池モジュール30から負荷50に対して電流が流されて(供給されて)電池モジュール30が放電されているとき、図2に示す各制御端子82(直列逆方向接続のnMOSFETQn、Qn+1の共通ゲート電極)には、制御信号S1~S6として、隣接する正電位側の配線から各抵抗素子80を通じて正の電圧Esが印加されるので、各スイッチ素子76は閉状態となり、各セル32の電圧Esが電圧検出部70により測定される。なお、電圧Esが印加されているときに、アンチフューズ素子78(AF1~AF6)の各両端に印加される電圧は閾値電圧Vth以下であり、高抵抗状態となっている。
電流遮断用スイッチ34が閉じられていて、モータ16が回生状態であり負荷50側から電池モジュール30に対して電流が流されて(供給されて)電池モジュール30が充電されているときにおいても、各制御端子82には、制御信号S1~S6として、隣接する正電位の配線から各抵抗素子80を通じて正の電圧が印加されるので、各スイッチ素子76は閉状態となり、各セル32の電圧Esが電圧検出部70により測定される。充電時に電圧Esが電圧検出部70の各抵抗器84に印加されているときであってもアンチフューズ素子78(AF1~AF6)の各両端に印加される電圧は閾値電圧Vth以下であり、高抵抗状態となっているので電圧検出部70によるセル電圧Esの検出動作に対して何ら影響しない。
図3において、電流遮断用スイッチ34が閉じられているモータ16の力行時等、電池モジュール30から負荷50に対して電流が流されて(供給されて)電池モジュール30が放電されているとき、各制御端子82には、制御信号S1~S6として隣接する負電位側の配線から各抵抗素子80を通じて負の電圧-Esが印加されるので、各スイッチ素子76Aは閉状態となり、各セル32の電圧Esが電圧検出部70により測定される。なお、電圧-Esが印加されているときに、アンチフューズ素子78(AF1~AF6)の各両端に印加される電圧は閾値電圧Vth以下であり、高抵抗状態となっている。
電流遮断用スイッチ34が閉じられていてモータ16が回生状態であり負荷50側から電池モジュール30に対して電流が流されて(供給されて)電池モジュール30が充電されているときにおいても、各制御端子82には、制御信号S1~S6として隣接する負電位の配線から各抵抗素子80を通じて負の電圧が印加されるので、各スイッチ素子76Aは閉状態となり、各セル32の電圧Esが電圧検出部70により測定される。充電時に電圧Esが印加されているときであってもアンチフューズ素子78(AF1~AF6)の各両端に印加される電圧は閾値電圧Vth以下であり、高抵抗状態となっている。
Claims (6)
- 充放電可能なN個のセル(32)が直列に接続され、前記各セル(32)のうち、少なくとも1組の隣接するセル(32p、32q)間に電流遮断用スイッチ(34)が設けられ、最大電位(Vmax)と最小電位(Vmin)間に負荷(50)が接続される電池モジュール(30)の前記各セル(32)の正極端子と負極端子とからN+1本の配線が接続されて前記各セル(32)の電圧を監視する電圧監視回路(10、10A、10B)であって、
N+1本の前記配線のうち、前記最大電位(Vmax)又は前記最小電位(Vmin)の配線を除く各配線に直列に挿入され、隣接する配線から分岐する制御線の制御信号(S1~S6)により開閉するスイッチ素子(76)を備え、
前記制御線には、前記スイッチ素子(76)の制御入力端子(82)と前記隣接する配線の間に抵抗素子(80)が直列に挿入され、
前記制御入力端子(82)と前記スイッチ素子(76)の開閉により断続される前記各配線との間にアンチフューズ素子(78)が接続された
ことを特徴とする電圧監視回路(10、10A、10B)。 - 請求項1記載の電圧監視回路(10、10A、10B)において、
前記各抵抗素子(80)には、それぞれコンデンサ(90)が並列に接続された
ことを特徴とする電圧監視回路(10、10A、10B)。 - 請求項1又は2記載の電圧監視回路(10、10B)において、
前記スイッチ素子(76)は、前記制御入力端子(82)に印加させる電圧が正電圧で閉状態となる半導体スイッチ(nMOSFET)であり、
前記半導体スイッチ(nMOSFET)は、前記最大電位(Vmax)の配線を除くN本の配線に挿入され、電位の高い側に隣接する前記配線から分岐する前記制御線の電位により閉状態とされる
ことを特徴とする電圧監視回路(10、10B)。 - 請求項1又は2記載の電圧監視回路(10A)において、
前記スイッチ素子(76)は、前記制御入力端子(82)に印加させる電圧が負電圧で閉状態となる半導体スイッチ(pMOSFET)であり、
前記半導体スイッチ(pMOSFET)は、前記最小電位(Vmin)の配線を除くN本の配線に挿入され、電位の低い側に隣接する前記配線から分岐する前記制御線の電位により閉状態とされる
ことを特徴とする電圧監視回路(10A)。 - 請求項1~4のいずれか1項に記載の電圧監視回路(10、10A、10B)において、
さらに、前記電池モジュール(30)の前記最大電位(Vmax)及び前記最小電位(Vmin)との間に充電手段(16、14、91、94)が接続され、前記電池モジュール(30)への充電が可能にされた
ことを特徴とする電圧監視回路(10、10A、10B)。 - 請求項5の電圧監視回路(10、10A、10B)を搭載した車両(12、12A、100、120)。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/977,294 US8737031B2 (en) | 2011-09-14 | 2012-08-28 | Voltage monitoring circuit, and vehicle equipped with same |
JP2012556331A JP5290476B1 (ja) | 2011-09-14 | 2012-08-28 | 電圧監視回路及び該電圧監視回路を搭載した車両 |
CN201280004418.9A CN103283111B (zh) | 2011-09-14 | 2012-08-28 | 电压监视电路以及搭载该电压监视电路的车辆 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011200229 | 2011-09-14 | ||
JP2011-200229 | 2011-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013038898A1 true WO2013038898A1 (ja) | 2013-03-21 |
Family
ID=47883132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/071661 WO2013038898A1 (ja) | 2011-09-14 | 2012-08-28 | 電圧監視回路及び該電圧監視回路を搭載した車両 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8737031B2 (ja) |
JP (1) | JP5290476B1 (ja) |
CN (1) | CN103283111B (ja) |
WO (1) | WO2013038898A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014147986A1 (ja) * | 2013-03-22 | 2014-09-25 | パナソニック株式会社 | 車載充電装置 |
JP2019168374A (ja) * | 2018-03-26 | 2019-10-03 | 株式会社ケーヒン | 電圧検出装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6825544B2 (ja) * | 2017-11-29 | 2021-02-03 | トヨタ自動車株式会社 | 電動車両 |
CN111971871B (zh) * | 2018-03-28 | 2024-04-30 | 松下知识产权经营株式会社 | 蓄电设备用的放电电路、蓄电系统以及具备其的车辆 |
JP7089673B2 (ja) * | 2018-11-29 | 2022-06-23 | トヨタ自動車株式会社 | 電源システム |
US11923711B2 (en) * | 2021-10-14 | 2024-03-05 | Amogy Inc. | Power management for hybrid power system |
US11791641B2 (en) * | 2021-11-17 | 2023-10-17 | GM Global Technology Operations LLC | High-voltage component protection during vehicle recharging |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5859580A (en) * | 1996-09-05 | 1999-01-12 | Yazaki Corporation | Service plug having male and female terminals permanently coupled to the service plug for closing a protected circuit |
JP2002315212A (ja) * | 2001-04-13 | 2002-10-25 | Denso Corp | フライングキャパシタ式組電池電圧検出装置 |
JP2005044523A (ja) * | 2003-07-22 | 2005-02-17 | Toyota Motor Corp | 二次電池の電流遮断構造およびその構造を備えた二次電池 |
US20070114973A1 (en) * | 2005-11-21 | 2007-05-24 | Nec Electronics Corporation | Battery voltage monitoring apparatus |
US20090140743A1 (en) * | 2007-11-29 | 2009-06-04 | Honda Motor Co., Ltd. | Cell voltage detecting apparatus |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3554714B2 (ja) * | 2001-05-31 | 2004-08-18 | 長野日本無線株式会社 | 蓄電素子の電流遮断回路 |
JP4256807B2 (ja) | 2004-03-22 | 2009-04-22 | 矢崎総業株式会社 | スイッチング回路及び個別電圧計測装置 |
JP4509852B2 (ja) * | 2005-05-17 | 2010-07-21 | 株式会社東芝 | 組電池装置とその電圧検出装置 |
JP4836729B2 (ja) * | 2006-09-26 | 2011-12-14 | 三洋電機株式会社 | 車両用の電源装置とこの電源装置の断線検出方法 |
JP4537993B2 (ja) * | 2006-12-19 | 2010-09-08 | 本田技研工業株式会社 | 電圧監視回路 |
JP4864730B2 (ja) * | 2007-01-05 | 2012-02-01 | ルネサスエレクトロニクス株式会社 | 電池電圧監視装置 |
JP5134396B2 (ja) * | 2008-02-27 | 2013-01-30 | セイコーインスツル株式会社 | バッテリ保護回路及びバッテリ装置 |
JP5454839B2 (ja) * | 2008-04-30 | 2014-03-26 | 株式会社村田製作所 | アンチヒューズ素子 |
JP2010104179A (ja) * | 2008-10-24 | 2010-05-06 | Sanyo Electric Co Ltd | 電源装置及び電動車輌 |
JP4691171B2 (ja) * | 2009-03-11 | 2011-06-01 | 本田技研工業株式会社 | 充放電装置 |
DE102009047670B4 (de) | 2009-12-08 | 2020-07-30 | Robert Bosch Gmbh | Schaltungseinrichtung mit einem Halbleiter-Bauelement |
JP2012016174A (ja) * | 2010-06-30 | 2012-01-19 | Sanyo Electric Co Ltd | 車両用の電源装置 |
-
2012
- 2012-08-28 WO PCT/JP2012/071661 patent/WO2013038898A1/ja active Application Filing
- 2012-08-28 JP JP2012556331A patent/JP5290476B1/ja not_active Expired - Fee Related
- 2012-08-28 CN CN201280004418.9A patent/CN103283111B/zh active Active
- 2012-08-28 US US13/977,294 patent/US8737031B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5859580A (en) * | 1996-09-05 | 1999-01-12 | Yazaki Corporation | Service plug having male and female terminals permanently coupled to the service plug for closing a protected circuit |
JP2002315212A (ja) * | 2001-04-13 | 2002-10-25 | Denso Corp | フライングキャパシタ式組電池電圧検出装置 |
JP2005044523A (ja) * | 2003-07-22 | 2005-02-17 | Toyota Motor Corp | 二次電池の電流遮断構造およびその構造を備えた二次電池 |
US20070114973A1 (en) * | 2005-11-21 | 2007-05-24 | Nec Electronics Corporation | Battery voltage monitoring apparatus |
US20090140743A1 (en) * | 2007-11-29 | 2009-06-04 | Honda Motor Co., Ltd. | Cell voltage detecting apparatus |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014147986A1 (ja) * | 2013-03-22 | 2014-09-25 | パナソニック株式会社 | 車載充電装置 |
JP2014187762A (ja) * | 2013-03-22 | 2014-10-02 | Panasonic Corp | 車載充電装置 |
US9917470B2 (en) | 2013-03-22 | 2018-03-13 | Panasonic Intellectual Property Management Co., Ltd. | In-vehicle charging apparatus |
JP2019168374A (ja) * | 2018-03-26 | 2019-10-03 | 株式会社ケーヒン | 電圧検出装置 |
JP7042128B2 (ja) | 2018-03-26 | 2022-03-25 | 日立Astemo株式会社 | 電圧検出装置 |
Also Published As
Publication number | Publication date |
---|---|
US20130279056A1 (en) | 2013-10-24 |
CN103283111A (zh) | 2013-09-04 |
CN103283111B (zh) | 2014-09-03 |
JPWO2013038898A1 (ja) | 2015-03-26 |
US8737031B2 (en) | 2014-05-27 |
JP5290476B1 (ja) | 2013-09-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5290476B1 (ja) | 電圧監視回路及び該電圧監視回路を搭載した車両 | |
JP5993450B2 (ja) | バッテリモジュール | |
WO2018096341A1 (en) | Battery system | |
JP6178328B2 (ja) | 電気化学セルを含むdc電圧源 | |
JP2012034515A (ja) | 車両用の電源装置 | |
US9434272B2 (en) | Battery management system | |
JP2014225950A (ja) | 蓄電システム | |
JP6087675B2 (ja) | 電池モジュール | |
US11351869B2 (en) | Alternating-current charging device for a motor vehicle | |
JP2016165192A (ja) | 過電圧保護回路 | |
JP5126043B2 (ja) | 組電池の監視装置 | |
US20230238807A1 (en) | Power distribution module | |
KR102344505B1 (ko) | 차량용 배터리 시스템의 전원 단속 장치 및 그 동작 방법 | |
KR101575271B1 (ko) | 논리 연산을 이용한 절연 저항 측정 장치 및 그 방법 | |
JP4770470B2 (ja) | 車両用駆動装置 | |
US20230283088A1 (en) | Circuit structure | |
JP6264186B2 (ja) | 電池パック | |
JP6825792B2 (ja) | コンタクタのオフ防止回路 | |
JP6772931B2 (ja) | 電池パックの放電制御装置 | |
WO2021106345A1 (ja) | 車載電池システム | |
US20240162734A1 (en) | An electric battery junction arrangement and an electrical system | |
WO2022064850A1 (ja) | 直流回路開閉装置 | |
CN116941156A (zh) | 电气电池连结装置和电气系统 | |
JP2021087280A (ja) | 電池制御装置 | |
CN116533777A (zh) | 用于车辆的高压网络的电路 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2012556331 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12831402 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13977294 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12831402 Country of ref document: EP Kind code of ref document: A1 |