WO2022186375A1 - 電圧測定システム - Google Patents
電圧測定システム Download PDFInfo
- Publication number
- WO2022186375A1 WO2022186375A1 PCT/JP2022/009390 JP2022009390W WO2022186375A1 WO 2022186375 A1 WO2022186375 A1 WO 2022186375A1 JP 2022009390 W JP2022009390 W JP 2022009390W WO 2022186375 A1 WO2022186375 A1 WO 2022186375A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reference signal
- circuit
- voltage measurement
- oscillator
- master
- Prior art date
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 276
- 238000012937 correction Methods 0.000 claims abstract description 201
- 238000004891 communication Methods 0.000 claims abstract description 148
- 230000010355 oscillation Effects 0.000 claims abstract description 92
- 230000008054 signal transmission Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 30
- 238000000034 method Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 18
- 241000723353 Chrysanthemum Species 0.000 description 8
- 235000005633 Chrysanthemum balsamita Nutrition 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000004590 computer program Methods 0.000 description 5
- 238000009966 trimming Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- H02J7/007—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
-
- 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
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
-
- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present disclosure relates to voltage measurement systems.
- a voltage measurement system used in a battery module system including battery modules is known (see, for example, Patent Document 1).
- a battery module has a plurality of battery cells connected in series.
- a voltage measurement system has a plurality of voltage measurement devices and a control device for controlling them. For example, one of the plurality of voltage measuring devices measures the current flowing through the battery module from the voltage value applied to the resistance element connected in series with the battery module, and each of the other voltage measuring devices measures the battery Cell voltage can be measured. Thereby, the voltage of each battery cell and the current flowing through each battery cell can be measured simultaneously.
- the voltage and current of the battery module may fluctuate over time depending on the state of the load connected to the battery module. Therefore, if the timing of voltage measurement and current measurement is out of sync, the state of the battery module (state of charge, state of deterioration, etc.) cannot be grasped with high accuracy. Therefore, in a conventional voltage measurement system, the measurement timing of each voltage measurement device is determined based on the clock signal from the oscillator in each voltage measurement device, thereby aligning the measurement timing of each voltage measurement device.
- the present disclosure is intended to solve such problems, and aims to provide a voltage measurement system that can control the measurement timing of the voltage measurement device with high precision.
- one aspect of the voltage measurement system is a voltage measurement system that measures the voltage of a battery cell, comprising: a first master oscillator that generates a first master clock signal; a first reference signal generating circuit that generates a first reference signal based on one master clock signal; a first slave oscillator that generates the first clock signal; a first correction circuit for correcting the oscillation frequency of the first slave oscillator based on the first clock signal; a first voltage measurement circuit; and a first measurement control circuit for controlling the first voltage measurement circuit based on the first clock signal.
- a first voltage measuring device having a normal mode for transmitting and receiving command signals between the first reference signal transmitting device and the first voltage measuring device; a correction mode in which the oscillation frequency of the first slave oscillator is synchronized with the oscillation frequency of the first master oscillator by transmitting the first reference signal from the first reference signal transmitting device to the first voltage measuring device and using the first reference signal; have.
- FIG. 1 is a block diagram showing a functional configuration of a voltage measurement system according to Embodiment 1.
- FIG. FIG. 2 is a flow chart showing the flow of operations in the correction mode in the communication circuit according to the first embodiment.
- FIG. 3 is a flow chart showing the operation flow in the correction mode in the voltage measuring device according to the first embodiment.
- FIG. 4 is a schematic graph showing an example of the mode of each signal according to Embodiment 1.
- FIG. 5 is a block diagram showing a functional configuration of the correction circuit according to the first embodiment;
- FIG. FIG. 6 is a diagram showing measurement timings before correction in the voltage measurement system according to the first embodiment.
- FIG. 7 is a diagram showing corrected measurement timings in the voltage measurement system according to the first embodiment.
- FIG. 8 is a block diagram showing the functional configuration of the voltage measurement system according to the second embodiment.
- FIG. 9 is a block diagram showing the functional configuration of the voltage measurement system according to the third embodiment.
- FIG. 10 is a block diagram showing the functional configuration of the voltage measurement system according to the fourth embodiment.
- FIG. 11 is a block diagram showing the functional configuration of the voltage measurement system according to the fifth embodiment.
- FIG. 12 is a block diagram showing the functional configuration of the voltage measurement system according to the sixth embodiment.
- each figure is a schematic diagram and is not necessarily strictly illustrated. Therefore, the scales and the like are not always the same in each drawing.
- symbol is attached
- Embodiment 1 A voltage measurement system according to Embodiment 1 will be described.
- FIG. 1 is a block diagram showing the functional configuration of a voltage measurement system 10 according to this embodiment. 1 also shows a battery cell 21 to be measured by the voltage measurement system 10, a resistance element 22, and a control device 20 that controls the voltage measurement system 10. FIG. 1
- the control device 20 is a device that controls the voltage measurement system 10 . Controller 20 transmits command signals for controlling voltage measurement system 10 to voltage measurement system 10 . For example, controller 20 sends a command signal to voltage measurement system 10 to start measuring voltage.
- the control device 20 can be implemented using, for example, an MCU (Micro-Controller Unit).
- the voltage measurement system 10 is a system that measures the voltage of the battery cell 21 .
- voltage measurement system 10 also measures the current flowing through battery cell 21 .
- the voltage measurement system 10 measures the voltage across the resistance element 22 connected in series with the battery cell 21, and from the voltage and the resistance value of the resistance element 22, the current flowing through the resistance element 22, that is, , the current flowing through the battery cell 21 is measured.
- voltage measurement system 10 includes communication device 30 and voltage measurement devices 40 and 50 . Communication device 30 and voltage measurement devices 40 and 50 transmit and receive command signals and the like using daisy communication paths. Further, transmission and reception of signals between the communication device 30 and the voltage measuring device 40 and between the voltage measuring device 40 and the voltage measuring device 50 may be performed by, for example, a transformer or the like. As a result, signals can be transmitted and received while maintaining insulation between devices.
- voltage measurement system 10 includes two voltage measurement devices 40 and 50, but may include three or more voltage measurement devices according to the number of battery cells to be measured.
- the voltage measurement system 10 has a normal mode and a correction mode.
- the normal mode is a mode in which command signals are transmitted and received between the communication device 30 and the voltage measurement devices 40 and 50, which is an example of a first reference signal transmission device.
- a reference signal is transmitted from the communication device 30 to the voltage measurement devices 40 and 50, and the communication device 30 has the oscillation frequencies of the slave oscillators 46 and 56 of the voltage measurement devices 40 and 50, respectively, using the reference signal. This is a mode for synchronizing with the oscillation frequency of the master oscillator 36 .
- the communication device 30 is a device that communicates with the control device 20 and the voltage measurement devices 40 and 50 .
- the communication device 30 is an example of a first reference signal transmission device that transmits a reference signal for correcting the oscillation frequencies of the slave oscillators 46 and 56 of the voltage measurement devices 40 and 50, respectively.
- the communication device 30 has a communication circuit 34 , a master oscillator 36 , a reference signal generation circuit 33 , a mode control circuit 35 and a multiplexer 32 .
- the communication circuit 34 is a circuit that transmits and receives command signals between the control device 20 and the voltage measurement devices 40 and 50 . For example, when receiving a command signal to start voltage measurement from the control device 20 , the communication circuit 34 transmits the command signal (or a signal corresponding to the command signal) to the voltage measurement devices 40 and 50 . Further, when the communication circuit 34 receives a command signal indicating switching to the normal mode or the correction mode from the control device 20, the communication circuit 34 transmits the command signal (or a signal corresponding to the command signal) to the voltage measurement devices 40 and 50. Send to Further, when the communication circuit 34 receives a command signal indicating switching to the correction mode, the communication circuit 34 transmits a signal instructing the reference signal generation circuit 33 to generate a reference signal.
- the master oscillator 36 is an example of a first master oscillator that generates a master clock signal.
- a master clock signal is an example of a first master clock signal used to generate a reference signal.
- a master clock signal generated by the master oscillator 36 is transmitted to the reference signal generation circuit 33 and the communication circuit 34 .
- the reference signal generation circuit 33 is an example of a first reference signal generation circuit that generates a reference signal based on the master clock signal in the correction mode.
- the reference signal generation circuit 33 generates a reference signal according to the command signal received from the communication circuit 34 .
- the reference signal is an example of a first reference signal generated based on the master clock signal.
- the reference signal generating circuit 33 repeats ten times generating one pulse every ten clocks of the master clock signal. A pulse train generated in this way can be used as a reference signal. Thereby, a reference signal corresponding to a predetermined number of clocks included in the master clock signal can be generated.
- the mode control circuit 35 is a circuit that controls the multiplexer 32 according to the mode.
- the mode control circuit 35 is switched between normal mode and correction mode based on the command signal transmitted from the communication circuit 34 .
- the mode control circuit 35 causes the multiplexer 32 to transmit the command signal in the normal mode, and causes the multiplexer 32 to transmit the reference signal in the correction mode.
- the multiplexer 32 is a circuit that transmits and receives command signals and reference signals.
- the multiplexer 32 switches signals to be transmitted and received based on the command signal from the mode control circuit 35 .
- Multiplexer 32 transmits and receives command signals in normal mode, and transmits and receives reference signals in correction mode.
- the voltage measurement device 40 is a device that measures voltage at timing based on the first clock signal generated by the slave oscillator 46 .
- the voltage measuring device 40 functions as a current measuring device that measures the current flowing through the resistive element 22 and the battery cell 21 by measuring the voltage across the resistive element 22 .
- the voltage measuring device 40 is an example of a first voltage measuring device that corrects the oscillation frequency of the slave oscillator 46 based on the reference signal received from the communication device 30 . In the normal mode, the voltage measuring device 40 shifts to the correction mode when receiving a command signal indicating the shift to the correction mode from the communication device 30 .
- Voltage measurement device 40 has selection circuit 41 , multiplexer 42 , correction circuit 43 , communication circuit 44 , mode control circuit 45 , slave oscillator 46 , measurement control circuit 47 , and voltage measurement circuit 48 .
- the selection circuit 41 is an example of a first selection circuit that transmits and receives command signals and reference signals.
- the selection circuit 41 switches signals to be transmitted and received based on the command signal from the mode control circuit 45 .
- the selection circuit 41 transmits and receives command signals to and from the communication device 30 in the normal mode, and receives and transmits the reference signal to the correction circuit 43 and the multiplexer 42 in the correction mode.
- the multiplexer 42 is an example of a first multiplexer that transmits and receives command signals and reference signals.
- the multiplexer 42 switches signals to be transmitted and received based on the command signal from the mode control circuit 45 .
- Multiplexer 42 transmits and receives command signals in normal mode, and transmits and receives reference signals in correction mode. In correction mode, multiplexer 42 transmits the reference signal to other instruments in voltage measurement system 10 . In this embodiment, multiplexer 42 sends the reference signal to voltage measuring device 50 .
- the correction circuit 43 is an example of a first correction circuit that corrects the oscillation frequency of the slave oscillator 46 based on the reference signal.
- the correction circuit 43 receives the reference signal from the selection circuit 41 in the correction mode.
- the reference signal is, for example, a signal indicating time corresponding to a predetermined number of master clock signal trains.
- the correction circuit 43 corrects the oscillation frequency of the slave oscillator 46 so that the predetermined number of first clock signal trains are included within the time indicated by the reference signal. A correction method by the correction circuit 43 will be described later.
- the communication circuit 44 is an example of a first communication circuit that transmits and receives command signals between the communication device 30 and the voltage measurement device 50 .
- the communication circuit 44 receives a command signal to start voltage measurement from the communication device 30 via the selection circuit 41, the command signal (or the signal corresponding to the command signal).
- the communication circuit 44 transmits the command signal (or a signal corresponding to the command signal) to the mode control circuit 45 and , to the voltage measuring device 50 .
- the mode control circuit 45 is an example of a first mode control circuit that controls the multiplexer 42 and the selection circuit 41 depending on the mode.
- the mode control circuit 45 also has a function of causing the correction circuit 43 to start correction.
- the mode control circuit 45 is switched between normal mode and correction mode based on the command signal transmitted from the communication circuit 44 .
- the mode control circuit 45 causes the multiplexer 42 and the selection circuit 41 to transmit the command signal in the normal mode, and causes the multiplexer 42 and the selection circuit 41 to transmit the reference signal in the correction mode.
- the slave oscillator 46 is an example of a first slave oscillator that generates the first clock signal.
- a first clock signal generated by slave oscillator 46 is sent to correction circuit 43 , communication circuit 44 , and measurement control circuit 47 .
- the measurement control circuit 47 is an example of a first measurement control circuit that controls the voltage measurement circuit 48 based on the first clock signal.
- the measurement control circuit 47 causes the voltage measurement circuit 48 to measure the voltage, for example, at intervals determined based on the first clock signal.
- the voltage measurement circuit 48 is an example of a first voltage measurement circuit that measures the voltage between two terminals. In this embodiment, voltage measurement circuit 48 measures the voltage across resistive element 22 .
- the voltage measurement circuit 48 includes, for example, an ADC (Analog-Digital Converter), converts an analog measurement value into a digital signal, and outputs the digital signal.
- ADC Analog-Digital Converter
- the voltage measuring device 50 is a device that measures voltage at timing based on the second clock signal generated by the slave oscillator 56 .
- voltage measuring device 50 measures the voltage across battery cell 21 .
- the voltage measuring device 50 is an example of a second voltage measuring device that corrects the oscillation frequency of the slave oscillator 56 based on the reference signal received from the communication device 30 via the voltage measuring device 40 .
- the voltage measuring device 50 shifts to the correction mode when it receives a command signal (via the voltage measuring device 40) indicating the shift to the correction mode from the communication device 30 .
- Voltage measuring device 50 has the same configuration as voltage measuring device 40 .
- Voltage measurement device 50 has selection circuit 51 , multiplexer 52 , correction circuit 53 , communication circuit 54 , mode control circuit 55 , slave oscillator 56 , measurement control circuit 57 and voltage measurement circuit 58 .
- the selection circuit 51 is an example of a second selection circuit that transmits and receives command signals and reference signals.
- the selection circuit 51 switches signals to be transmitted and received based on the command signal from the mode control circuit 55 .
- the selection circuit 51 transmits and receives command signals to and from the voltage measuring device 40 in the normal mode, and transmits and receives reference signals to and from the correction circuit 53 and the multiplexer 52 in the correction mode.
- the multiplexer 52 is an example of a second multiplexer that transmits and receives command signals and reference signals.
- the multiplexer 52 switches signals to be transmitted and received based on the command signal from the mode control circuit 55 .
- Multiplexer 52 transmits and receives command signals in normal mode, and transmits and receives reference signals in correction mode.
- the correction circuit 53 is an example of a second correction circuit that corrects the oscillation frequency of the slave oscillator 56 based on the reference signal.
- the correction circuit 53 receives the reference signal from the selection circuit 51 in the correction mode.
- the reference signal is, for example, a signal indicating time corresponding to a predetermined number of master clock signal trains.
- the correction circuit 53 corrects the oscillation frequency of the slave oscillator 56 so that the predetermined number of second clock signal trains are included within the time indicated by the reference signal.
- the communication circuit 54 is an example of a first communication circuit that transmits and receives command signals between the communication device 30 and the voltage measurement device 40 .
- the communication circuit 54 receives a command signal to start voltage measurement from the voltage measurement device 40 via the selection circuit 51, the command signal (or a signal corresponding to the command signal) is sent to the measurement control circuit 57.
- the communication circuit 54 receives a command signal indicating switching to the normal mode or the correction mode from the voltage measurement device 40
- the communication circuit 54 transmits the command signal (or a signal corresponding to the command signal) to the mode control circuit 55 . Send.
- the mode control circuit 55 is an example of a second mode control circuit that controls the multiplexer 52 and the selection circuit 51 depending on the mode.
- the mode control circuit 55 also has a function of causing the correction circuit 53 to start correction.
- the mode control circuit 55 is switched between normal mode and correction mode based on the command signal transmitted from the communication circuit 54 .
- the mode control circuit 55 causes the multiplexer 52 and the selection circuit 51 to transmit the command signal in the normal mode, and causes the multiplexer 52 and the selection circuit 51 to transmit the reference signal in the correction mode.
- the slave oscillator 56 is an example of a second slave oscillator that generates a second clock signal.
- a second clock signal generated by the slave oscillator 56 is sent to the correction circuit 53 , the communication circuit 54 and the measurement control circuit 57 .
- the measurement control circuit 57 is an example of a second measurement control circuit that controls the voltage measurement circuit 58 based on the second clock signal.
- the measurement control circuit 57 causes the voltage measurement circuit 58 to measure the voltage, for example, at intervals determined based on the second clock signal.
- the voltage measurement circuit 58 is an example of a second voltage measurement circuit that measures the voltage between two terminals. In this embodiment, voltage measurement circuit 58 measures the voltage across battery cell 21 .
- the voltage measurement circuit 58 includes, for example, an ADC, converts an analog measurement value into a digital signal, and outputs the digital signal.
- FIG. 2 is a flow chart showing the flow of operations in the correction mode in communication device 30 according to the present embodiment.
- FIG. 3 is a flow chart showing the flow of operations in the correction mode in voltage measuring device 40 according to the present embodiment.
- FIG. 4 is a schematic graph showing an example of the mode of each signal according to this embodiment. Graphs (a), (c), and (d) in FIG. 4 show output timings of the master clock signal, the first clock signal, and the second clock signal, respectively. Graph (b) in FIG. 4 shows the time waveform of the reference signal.
- FIG. 1 the operation of the communication device 30 will be described with reference to FIGS. 2 and 4.
- FIG. 1 the operation of the communication device 30 will be described with reference to FIGS. 2 and 4.
- the communication device 30 transmits a correction command signal, which is a command signal indicating switching to the correction mode, to the voltage measurement device 40 (and voltage measurement device 50) (S10).
- the communication device 30 determines whether or not ACK has been received from the voltage measurement device 40 and the voltage measurement device 50 (S12).
- ACK is a signal that is transmitted when each of voltage measuring device 40 and voltage measuring device 50 receives a correction command signal.
- step S12 If the communication device 30 does not receive ACK (No in S12), it repeats step S12.
- the communication device 30 When the communication device 30 receives ACK (Yes in S12), it switches to the correction mode (S14). Specifically, when the communication circuit 34 receives the ACK, it transmits to the mode control circuit 35 a command signal instructing switching to the correction mode.
- the communication device 30 generates a reference signal and transmits it to the voltage measuring device 40 (and the voltage measuring device 50) (S16).
- the communication circuit 34 transmits a command signal for starting generation of the reference signal to the reference signal generation circuit 33 .
- the reference signal generation circuit 33 generates a reference signal based on the master clock signal from the master oscillator 36 .
- the master clock signal as shown in graph (a) of FIG. 4, is a signal that is constantly repeatedly output at a predetermined oscillation frequency.
- the configuration of the reference signal is not particularly limited. In the present embodiment, the reference signal generation circuit 33 repeats generation of one pulse signal every time a predetermined number of clocks of the master clock signal is output for a predetermined number of times.
- a pulse signal train as shown in the graph (b) of FIG. 4 generated in this manner may be used as the reference signal.
- the reference signal includes 21 pulse signals generated every five times the master clock signal is output
- the period from the first pulse signal to the last pulse signal of the reference signal is 100 Corresponds to the period during which one is output.
- the communication device 30 determines whether or not a predetermined time has passed (S18). If the predetermined time has not passed (No in S18), the transmission of the reference signal is continued. In this embodiment, the transmission of the reference signal continues for a period of time corresponding to the time from the start to the end of transmission of the predetermined number of pulse signals generated by the reference signal generation circuit 33 .
- the communication device 30 stops transmitting the reference signal (S20) and switches to the normal mode (S22). Specifically, the communication circuit 34 transmits to the mode control circuit 35 a command signal instructing switching to the normal mode. The communication circuit 34 also transmits a command signal to the reference signal generation circuit 33 to stop the reference signal generation.
- FIG. 3 the operation of the voltage measuring device 40 will be explained using FIGS. 3 and 4.
- FIG. 3 the operation of the voltage measuring device 40 will be explained using FIGS. 3 and 4.
- the voltage measuring device 40 receives the correction command signal from the communication device 30 (S30). Specifically, the communication circuit 44 receives the correction command signal via the selection circuit 41 .
- the voltage measuring device 40 transmits ACK to the communication device 30 (S32). Specifically, the communication circuit 44 transmits ACK to the communication device 30 via the selection circuit 41 .
- the voltage measuring device 40 switches to the correction mode (S34). Specifically, after transmitting ACK, the communication circuit 44 transmits to the mode control circuit 45 a command signal instructing switching to the correction mode.
- the voltage measuring device 40 determines whether or not the reference signal has been received (S36). When the voltage measuring device 40 does not receive the reference signal (No in S36), the step S36 is repeated.
- FIG. 5 is a block diagram showing the functional configuration of the correction circuit 43 according to this embodiment. Note that FIG. 5 also shows the mode control circuit 45 and the slave oscillator 46 . As shown in FIG. 5 , the correction circuit 43 has a pulse counter 81 , an arithmetic circuit 82 and a memory circuit 83 .
- the pulse counter 81 is a circuit that receives a reference signal and counts the number of pulse signals included in the reference signal. The pulse counter 81 outputs the counted number of pulse signals to the arithmetic circuit 82 .
- the arithmetic circuit 82 is a circuit that calculates a corrected difference value based on information corresponding to the number of pulse signals included in the reference signal and the oscillation frequency of the slave oscillator 46 before correction. Arithmetic circuit 82 corrects the oscillation frequency of slave oscillator 46 by outputting a signal corresponding to the corrected difference value to slave oscillator 46 .
- the storage circuit 83 is a circuit that stores information corresponding to the oscillation frequency of the slave oscillator 46 before correction.
- the storage circuit 83 stores a so-called trimming value corresponding to the oscillation frequency of the slave oscillator 46 before correction.
- the trimming value is a correction value used to set the pre-correction oscillation frequency of the slave oscillator 46 .
- the signal from the mode control circuit 45 causes the pulse counter 81 to start counting pulse signals included in the reference signal.
- the pulse counter 81 outputs the counted number of pulse signals to the arithmetic circuit 82 .
- the voltage measuring device 40 calculates a corrected difference value (S40).
- the arithmetic circuit 82 shown in FIG. 5 calculates the corrected difference value from the number of pulse signals included in the reference signal and information corresponding to the oscillation frequency of the slave oscillator 46 before correction.
- the arithmetic circuit 82 obtains the period corresponding to the reference signal and the number of master clock signals output from the master oscillator 36 during that period.
- the arithmetic circuit 82 may store in advance how many master clock signals the pulse signal included in the reference signal is generated. Accordingly, the arithmetic circuit 82 can obtain the number of master clock signals output from the master oscillator 36 within the period corresponding to the reference signal based on the number of pulse signals included in the reference signal.
- Arithmetic circuit 82 further calculates the number of first clock signals output from slave oscillator 46 within a period corresponding to the reference signal based on information corresponding to the oscillation frequency of slave oscillator 46 before correction input from storage circuit 83. (see graph (c) in FIG. 4).
- the arithmetic circuit 82 calculates a corrected difference value.
- the voltage measuring device 40 determines whether there is a format error in the reference signal (S42). For example, if the reference signal is not a pulse signal train as shown in graph (b) of FIG. Determine that there is a format error in the reference signal.
- the voltage measuring device 40 determines that the reference signal has a format error (Yes in S42), it discards the calculated correction difference value and does not perform correction (S46). On the other hand, when the voltage measuring device 40 determines that the reference signal has no format error (No in S42), it performs correction using the calculated correction difference value (S44).
- the arithmetic circuit 82 shown in FIG. 5 corrects the oscillation frequency of the slave oscillator 46 by transmitting a signal corresponding to the corrected difference value to the slave oscillator 46 . For example, by adjusting the time constant of the circuit included in the slave oscillator 46, the oscillation frequency of the slave oscillator 46 can be corrected.
- the time constant of the RC circuit can be adjusted.
- the oscillation frequency of the slave oscillator 46 can be corrected.
- the trimming value before correction is rewritten to a trimming value corresponding to the correction difference value used for correction.
- the voltage measuring device 40 switches from the correction mode to the normal mode (S48). Specifically, the communication circuit 44 transmits to the mode control circuit 45 a command signal instructing switching to the normal mode.
- the correction circuit 43 of the voltage measuring device 40 counts the number of pulse signals included in the reference signal, and corrects the oscillation frequency of the slave oscillator 46 based on the number.
- the correction circuit 43 corrects the slave oscillator 46 based on the correction difference value calculated from the number of clocks of the master oscillator 36 corresponding to the number of pulse signals and the number of clocks of the slave oscillator 46 in the period corresponding to the reference signal. corrects the oscillation frequency of The oscillation frequency of the slave oscillator 56 of the voltage measuring device 50 can also be corrected in the same manner.
- FIGS. 4, 6 and 7 are diagrams showing measurement timings before and after correction, respectively, in voltage measurement system 10 according to the present embodiment.
- FIGS. 6 and 7 Graph (a) showing the current measurement timing shown in FIGS. 6 and 7 corresponds to the voltage measurement timing by the voltage measurement device 40, that is, the timing of measuring the current flowing through the battery cell 21.
- FIG. Graph (b) showing the voltage measurement timing shown in FIGS. 6 and 7 corresponds to the timing of measuring the voltage of the battery cell 21 by the voltage measurement device 40 .
- the position of the upward arrow shown in FIGS. 6 and 7 indicates the timing of measurement.
- the voltage measuring device 40 measures the voltage at the period determined based on the first clock signal output by the slave oscillator 46
- the voltage measuring device 50 measures the voltage at the slave oscillator 56
- the voltage is measured at a period determined based on the second clock signal output by the . For example, the voltage is measured each time 1000 clocks of each of the first clock signal and the second clock signal are output.
- the measurement timing of each voltage measuring device can be controlled with high precision. Also, in this case, as shown in FIG. 7, the current measurement cycle and the voltage measurement cycle can be matched. Therefore, the current measurement timing and the voltage measurement timing can be substantially matched. Therefore, the state of the battery cell can be grasped with high accuracy.
- the daisy communication path is used to transmit and receive not only the command signal but also the reference signal. Therefore, it is necessary to provide a new communication path for transmitting and receiving the reference signal. do not have.
- each voltage measuring device can be corrected simultaneously in parallel with one command output from the communication device 30, so correction can be performed easily and quickly.
- the voltage measurement system 10 according to the present embodiment has a normal mode and a correction mode, and transmits and receives a command signal or a reference signal according to each mode, collision of these signals can be avoided. can.
- Embodiment 2 A voltage measurement system according to Embodiment 2 will be described.
- the voltage measurement system according to the present embodiment is the voltage measurement system according to Embodiment 1 in that the voltage measurement device has a high-precision oscillator, and the oscillation frequency of the master oscillator is corrected in accordance with the high-precision oscillator. 10 different.
- the voltage measurement system according to the present embodiment will be described below, focusing on differences from the voltage measurement system 10 according to the first embodiment.
- FIG. 8 is a block diagram showing the functional configuration of voltage measurement system 110 according to this embodiment. 8 also shows the battery cell 21 to be measured by the voltage measurement system 110, the resistance element 22, and the control device 20 that controls the voltage measurement system 110.
- FIG. 8 is a block diagram showing the functional configuration of voltage measurement system 110 according to this embodiment. 8 also shows the battery cell 21 to be measured by the voltage measurement system 110, the resistance element 22, and the control device 20 that controls the voltage measurement system 110.
- voltage measurement system 110 includes communication device 130 and voltage measurement devices 140 and 50 .
- Voltage measuring apparatus 140 includes selection circuit 41, multiplexer 42, reference signal correction circuit 143, communication circuit 44, mode control circuit 45, high-precision oscillator 146, and measurement control circuit 47. , and a voltage measurement circuit 48 .
- the high-precision oscillator 146 is an oscillator that generates a high-precision clock signal with higher accuracy than the master oscillator 36.
- a high-precision clock signal generated by the high-precision oscillator 146 is transmitted to the reference signal correction circuit 143 , the communication circuit 44 and the measurement control circuit 47 .
- the high-precision oscillator 146 does not have to be included in the components of the voltage measuring device 140 .
- precision oscillator 146 may transmit a clock signal to voltage measuring device 140 from outside of voltage measuring device 140 .
- the reference signal correction circuit 143 is a circuit that calculates a correction difference value for correcting the reference signal.
- the reference signal correction circuit 143 calculates a correction difference value between the high precision clock signal and the master clock signal, like the correction circuit 43 according to the first embodiment.
- the reference signal correction circuit 143 transmits the calculated correction difference value to the communication device 130 via the communication circuit 34 and the selection circuit 41 .
- the communication device 130 has a communication circuit 34, a master oscillator 36, a reference signal generation circuit 33, a mode control circuit 35, a multiplexer 32, and a master correction circuit 139.
- the master correction circuit 139 is a circuit that corrects the oscillation frequency of the master oscillator 36 based on the high-precision clock signal. By outputting a signal corresponding to the corrected difference value calculated by the reference signal correction circuit 143 of the voltage measuring device 140 to the master oscillator 36, the oscillation frequency of the master oscillator 36 is corrected.
- the correction of the oscillation frequency of the master oscillator 36 can be performed in the same manner as the correction of the oscillation frequency of the slave oscillator 46 according to the first embodiment.
- the master oscillator 36 is corrected. Specifically, similarly to the correction method according to Embodiment 1, the communication device 130 switches to the correction mode and transmits the reference signal.
- the reference signal correction circuit 143 of the voltage measuring device 140 calculates a correction difference value and transmits it to the communication circuit 44 in the same manner as the correction method according to the first embodiment.
- the communication circuit 44 of the voltage measuring device 140 transmits a signal corresponding to the corrected difference value to the communication device 130 via the selection circuit 41 .
- the communication circuit 34 of the communication device 130 receives the signal corresponding to the correction difference value via the multiplexer 32 and transmits it to the master correction circuit 139 .
- the master correction circuit 139 corrects the oscillation frequency of the master oscillator 36 by outputting a signal corresponding to the corrected difference value to the master oscillator 36 .
- the oscillation frequency of the master oscillator 36 can be corrected to match the high-precision oscillator 146.
- the oscillation frequency of the slave oscillator 56 is corrected in the same manner as in the first embodiment.
- Embodiment 3 A voltage measurement system according to Embodiment 3 will be described.
- the voltage measurement system according to the present embodiment differs from voltage measurement system 10 according to Embodiment 1 mainly in that two communication devices are provided.
- the voltage measurement system according to the present embodiment will be described below, focusing on differences from the voltage measurement system 10 according to the first embodiment.
- FIG. 9 is a block diagram showing the functional configuration of voltage measurement system 210 according to this embodiment. 9 also shows the battery cell 21 to be measured by the voltage measurement system 210, the resistance element 22, and the control device 220 that controls the voltage measurement system 210. FIG. 9
- the voltage measurement system 210 includes communication devices 230, 230a and voltage measurement devices 40, 50.
- signals are transmitted and received between control device 220, communication device 230, and voltage measurement device 40 using a daisy communication path. Signals are transmitted and received to and from the measuring device 50 using the daisy communication path.
- the control device 220 has a communication circuit 221 and a control oscillator 222 .
- the communication circuit 221 is a circuit that transmits and receives command signals to and from the communication devices 230 and 230a.
- the control oscillator 222 is an oscillator that generates a control clock signal.
- the communication device 230 is an example of a first reference signal transmission device that receives a control clock signal, which is an externally input clock signal, and transmits a reference signal.
- the communication device 230 has a communication circuit 34 , a master oscillator 36 , a reference signal generation circuit 33 , a mode control circuit 35 , a multiplexer 32 and a master correction circuit 239 .
- the master correction circuit 239 is an example of a first master correction circuit that corrects the oscillation frequency of the master oscillator 36 based on the control clock signal.
- a control clock signal is input to the master correction circuit 239 .
- the master correction circuit 239 counts the number of control clock signals within a predetermined period of time, calculates a correction difference value from this number and the number of master clock signals of the master oscillator 36 within a predetermined period of time, and performs the correction.
- the oscillation frequency of master oscillator 36 may be corrected based on the difference value.
- the communication device 230a is an example of a second reference signal transmission device that receives a control clock signal, which is a clock signal input from the outside, and transmits a reference signal. Communication device 230 a transmits and receives command signals to and from voltage measurement device 50 , and transmits reference signals to voltage measurement device 50 .
- the communication device 230a has a communication circuit 34a, a master oscillator 36a, a reference signal generation circuit 33a, a mode control circuit 35a, a multiplexer 32a, and a master correction circuit 239a.
- the communication circuit 34a, the master oscillator 36a, the reference signal generation circuit 33a, the mode control circuit 35a, the multiplexer 32a, and the master correction circuit 239a are the communication circuit 34, the master oscillator 36, the reference signal generation circuit 33, and the mode control circuit 35, respectively. , multiplexer 32 , and master correction circuit 239 .
- the master oscillator 36a is an example of a second master oscillator that generates a master clock signal.
- the master clock signal generated by the master oscillator 36a is an example of a second master clock signal.
- the reference signal generation circuit 33a is an example of a second reference signal generation circuit that generates a reference signal based on the master clock signal generated by the master oscillator 36a.
- the reference signal generated by the reference signal generation circuit 33a is an example of a second reference signal generated based on the master clock signal generated by the master oscillator 36a.
- the master correction circuit 239a is an example of a second master correction circuit that corrects the oscillation frequency of the master oscillator 36a based on the control clock signal.
- the master oscillators 36 and 36a are corrected. Specifically, the communication devices 230 and 230a switch to the correction mode based on the command signal from the control device 220 .
- the master correction circuit 239 calculates the correction difference value based on the control clock signal input from the control device 220 by the method described above.
- the master correction circuit 239a similarly calculates the correction difference value.
- the master correction circuit 239 corrects the oscillation frequency of the master oscillator 36 by inputting a signal corresponding to the corrected difference value to the master oscillator 36 .
- the master correction circuit 239a similarly corrects the oscillation frequency of the master oscillator 36a.
- the oscillation frequencies of the master oscillators 36 and 36a can be corrected based on the control clock signal.
- Embodiment 4 A voltage measurement system according to Embodiment 4 will be described.
- the voltage measurement system according to the present embodiment mainly uses the reference signal transmitted from one of the two communication devices to correct the oscillation frequency of the master oscillator of the other communication device. is different from the voltage measurement system 210 according to the third embodiment.
- the voltage measurement system according to the present embodiment will be described below, focusing on differences from the voltage measurement system 210 according to the third embodiment.
- FIG. 10 is a block diagram showing the functional configuration of voltage measurement system 310 according to this embodiment. Note that FIG. 10 also shows the battery cell 21 to be measured by the voltage measurement system 310 , the resistance element 22 , and the control device 20 that controls the voltage measurement system 310 .
- the voltage measurement system 310 includes communication devices 330, 330a and voltage measurement devices 40, 50.
- signals are transmitted and received between the control device 20, the communication device 330, and the voltage measurement device 40 using the daisy communication path.
- Signals are transmitted and received to and from the measuring device 50 using the daisy communication path.
- the communication device 330 is an example of a first reference signal transmission device that transmits a reference signal.
- the communication device 330 has a communication circuit 34 , a master oscillator 36 , a reference signal generation circuit 33 , a mode control circuit 35 and a multiplexer 32 .
- the communication device 330 according to the present embodiment differs from the communication device 30 according to the first embodiment in that the reference signal is transmitted not only to the voltage measurement device 40 but also to the communication device 330a. do.
- the communication device 330a is an example of a second reference signal transmission device that transmits a reference signal.
- the communication device 330a has a communication circuit 34a, a master oscillator 36a, a reference signal generation circuit 33a, a mode control circuit 35a, a multiplexer 32a, and a master correction circuit 339a.
- the master correction circuit 339a is an example of a second master correction circuit that corrects the oscillation frequency of the master oscillator 36a based on the master clock signal generated by the master oscillator 36 of the communication device 330.
- Master correction circuit 339 a receives the reference signal from communication device 330 .
- the master correction circuit 339a has the same configuration as the correction circuit 43 according to Embodiment 1, and corrects the oscillation frequency of the master oscillator 36a based on the reference signal.
- the master oscillator 36a is corrected. Specifically, the communication devices 330 and 330a switch to the correction mode based on the command signal from the control device 20 .
- the communication device 330 transmits a reference signal generated in the same manner as the reference signal according to the first embodiment to the master correction circuit 339a of the communication device 330a.
- the master correction circuit 339a calculates a correction difference value based on the received reference signal.
- the master correction circuit 339a corrects the oscillation frequency of the master oscillator 36a by inputting a signal corresponding to the corrected difference value to the master oscillator 36a.
- the oscillation frequency of the master oscillator 36a of the communication device 330a can be corrected based on the master clock signal of the master oscillator 36 of the communication device 330a.
- Embodiment 5 A voltage measurement system according to Embodiment 5 will be described.
- the voltage measurement system according to the present embodiment is different from voltage measurement system 10 according to Embodiment 1 mainly in that the voltage measurement device generates the reference signal.
- the voltage measurement system according to the present embodiment will be described below, focusing on differences from the voltage measurement system 10 according to the first embodiment.
- FIG. 11 is a block diagram showing the functional configuration of voltage measurement system 410 according to this embodiment. Note that FIG. 11 also shows the battery cell 21 to be measured by the voltage measurement system 410 , the resistance element 22 , and the control device 20 that controls the voltage measurement system 410 .
- the voltage measurement system 410 includes voltage measurement devices 440 and 50 .
- signals are transmitted and received between control device 20, voltage measurement device 440, and voltage measurement device 50 using a daisy communication path.
- the voltage measuring device 440 is an example of a first reference signal transmitting device that transmits a reference signal.
- Voltage measurement device 440 has multiplexer 42 , reference signal generation circuit 443 , communication circuit 444 , mode control circuit 45 , master oscillator 446 , measurement control circuit 447 , and voltage measurement circuit 48 .
- the communication circuit 444 is a circuit that transmits and receives command signals between the control device 20 and the voltage measurement device 50 . For example, when the communication circuit 444 receives a command signal instructing the start of voltage measurement from the control device 20, the command signal (or a signal corresponding to the command signal) is transmitted to the measurement control circuit 447 and the voltage measurement device 50. do. Further, when the communication circuit 444 receives a command signal indicating switching to the normal mode or the correction mode from the control device 20, the communication circuit 444 transmits the command signal (or a signal corresponding to the command signal) to the voltage measurement device 50. do. Further, when receiving a command signal indicating switching to the correction mode, the communication circuit 444 transmits a signal instructing the reference signal generation circuit 443 to generate a reference signal.
- the master oscillator 446 is an example of a first master oscillator that generates a master clock signal.
- a master clock signal is an example of a first master clock signal used to generate a reference signal.
- a master clock signal generated by the master oscillator 446 is transmitted to the reference signal generation circuit 443 , communication circuit 444 and measurement control circuit 447 .
- the reference signal generation circuit 443 is an example of a first reference signal generation circuit that generates a reference signal based on the master clock signal in the correction mode.
- the reference signal generation circuit 443 generates a reference signal based on the command signal received from the communication circuit 444 .
- the reference signal is an example of a first reference signal generated based on the master clock signal.
- the measurement control circuit 447 is a circuit that controls the voltage measurement circuit 48 based on the master clock signal.
- the measurement control circuit 447 has the same configuration as the measurement control circuit 47 according to the first embodiment.
- Voltage measuring device 50 is an example of a first voltage measuring device that corrects the oscillation frequency of slave oscillator 56 based on the reference signal received from voltage measuring device 440 .
- the voltage measuring device 440 switches to the correction mode based on the command signal from the control device 20.
- the reference signal generation circuit 443 of the voltage measurement device 440 generates a reference signal and transmits it to the voltage measurement device 50 .
- voltage measuring device 50 corrects the oscillation frequency of slave oscillator 56 based on the reference signal, like voltage measuring device 50 according to the first embodiment.
- Embodiment 6 A voltage measurement system according to Embodiment 6 will be described.
- the voltage measurement system according to the present embodiment mainly uses the first clock signal generated by the corrected slave oscillator to correct the oscillator slower than the slave oscillator, and is different from the voltage measurement system according to the first embodiment. Differs from system 10 .
- the voltage measurement system according to the present embodiment will be described below, focusing on differences from the voltage measurement system 10 according to the first embodiment.
- FIG. 12 is a block diagram showing the functional configuration of voltage measurement system 510 according to this embodiment. Note that FIG. 12 also shows the battery cell 21 to be measured by the voltage measurement system 510 , the resistance element 22 , and the control device 20 that controls the voltage measurement system 510 .
- voltage measurement system 510 includes communication device 30 and voltage measurement devices 540 and 550 .
- the voltage measurement device 540 includes a selection circuit 41, a multiplexer 42, a correction circuit 43, a communication circuit 544, a mode control circuit 45, a slave oscillator 46, a measurement control circuit 47, a voltage measurement circuit 48, and a low speed correction circuit. It has a circuit 549 and a slow oscillator 546 .
- the low-speed oscillator 546 is an example of a first low-speed oscillator that generates a low-speed clock signal and has an oscillation frequency lower than that of the slave oscillator 46.
- a slow oscillator 546 may be used to control the timing of any operations in voltage measuring device 540 .
- the slow oscillator 546 may be used, for example, to control the timing of balancing between multiple battery cells.
- the low-speed correction circuit 549 is an example of a first low-speed correction circuit that corrects the oscillation frequency of the low-speed oscillator 546 based on the first clock signal from the slave oscillator 46.
- the low speed correction circuit 549 corrects the oscillation frequency of the low speed oscillator 546 in the correction mode, for example.
- the low-speed correction circuit 549 adjusts the number of clocks of the first clock signal output from the slave oscillator 46 within a period corresponding to one pulse of the low-speed clock signal output from the low-speed oscillator 546 to a predetermined number.
- the oscillation frequency of the low-speed oscillator 546 may be corrected so that
- the low-speed correction circuit 549 may correct the oscillation frequency of the low-speed oscillator 546 based on the first clock signal from the slave oscillator 46 corrected based on the reference signal.
- the communication circuit 544 transmits the command signal (or the signal corresponding to the command signal) to the low speed correction circuit 549 when receiving the command signal instructing the correction of the low speed oscillator 546. 1, but identical in other respects.
- the voltage measurement device 550 includes a selection circuit 51, a multiplexer 52, a correction circuit 53, a communication circuit 554, a mode control circuit 55, a slave oscillator 56, a measurement control circuit 57, a voltage measurement circuit 58, and a low speed correction circuit. It has a circuit 559 and a slow oscillator 556 .
- the communication circuit 554, the low speed correction circuit 559, and the low speed oscillator 556 have the same configurations as the communication circuit 544, the low speed correction circuit 549, and the low speed oscillator 546 of the voltage measuring device 540, respectively.
- the low-speed oscillator 556 is an example of a second low-speed oscillator that generates a low-speed clock signal and has an oscillation frequency lower than that of the slave oscillator 56 .
- the low speed correction circuit 559 is an example of a second low speed correction circuit that corrects the oscillation frequency of the low speed oscillator 556 based on the second clock signal from the slave oscillator 56 .
- a correction method for the slave oscillators 46 and 56 and the low-speed oscillators 546 and 556 according to this embodiment will be described.
- the correction method for the slave oscillators 46 and 56 according to the present embodiment is the same as the correction method for the slave oscillators 46 and 56 according to the first embodiment.
- the low-speed correction circuits 549 and 559 correct the low-speed oscillators 546 and 556, respectively, during the period when the pulse counter 81 (see FIG. 5) in the correction mode counts pulses, for example. This allows the slow oscillators 546, 556 as well as the slave oscillators 46, 56 to be corrected.
- the low speed correction circuits 549 and 559 may correct the low speed oscillators 546 and 556 after the slave oscillators 46 and 56 are corrected. As a result, not only the timing of voltage measurement in the voltage measuring device 540 but also other operation timings can be controlled with high accuracy.
- controller is not included in the voltage measurement system in each of the above embodiments, it may be included in the voltage measurement system.
- the voltage measurement system according to each of the above-described embodiments may be housed in one housing or the like, or may be separated into a plurality of units.
- a system LSI is an ultra-multifunctional LSI manufactured by integrating multiple components on a single chip. Specifically, it is a computer system that includes a microprocessor, ROM, RAM, etc. . A computer program is stored in the RAM. The system LSI achieves its functions by the microprocessor operating according to the computer program.
- IC card or module is a computer system composed of a microprocessor, ROM, RAM and the like.
- the IC card or module may include the super multifunctional LSI.
- the IC card or module achieves its function by the microprocessor operating according to the computer program. This IC card or this module may have tamper resistance.
- the present disclosure may be a computer system comprising a microprocessor and memory, the memory storing the computer program, and the microprocessor operating according to the computer program.
- a voltage measurement system can be used, for example, as a voltage measurement system for an in-vehicle battery module system.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measurement Of Current Or Voltage (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
実施の形態1に係る電圧測定システムについて説明する。
本実施の形態に係る電圧測定システムの全体構成について図1を用いて説明する。図1は、本実施の形態に係る電圧測定システム10の機能構成を示すブロック図である。なお、図1には、電圧測定システム10の測定対象であるバッテリセル21と、抵抗素子22と、電圧測定システム10を制御する制御装置20とが併せて示されている。
本実施の形態に係るスレーブ発振器46、56の発振周波数の補正方法について、図2~図4を用いて説明する。図2は、本実施の形態に係る通信装置30での、補正モードにおける動作の流れを示すフローチャートである。図3は、本実施の形態に係る電圧測定装置40での、補正モードにおける動作の流れを示すフローチャートである。図4は、本実施の形態に係る各信号の態様の一例を示す模式的なグラフである。図4のグラフ(a)、(c)、及び(d)には、それぞれ、マスタークロック信号、第一クロック信号、及び第二クロック信号の出力タイミングが示されている。図4のグラフ(b)には、基準信号の時間波形が示されている。
本実施の形態に係る電圧測定システム10の効果について、図4、図6及び図7を用いて説明する。図6及び図7は、それぞれ、本実施の形態に係る電圧測定システム10における補正前及び補正後の測定タイミングを示す図である。
実施の形態2に係る電圧測定システムについて説明する。本実施の形態に係る電圧測定システムは、電圧測定装置が高精度発振器を有し、当該高精度発振器に合わせて、マスター発振器の発振周波数を補正する点において、実施の形態1に係る電圧測定システム10と相違する。以下、本実施の形態に係る電圧測定システムについて、実施の形態1に係る電圧測定システム10との相違点を中心に説明する。
本実施の形態に係る電圧測定システムの全体構成について、図8を用いて説明する。図8は、本実施の形態に係る電圧測定システム110の機能構成を示すブロック図である。なお、図8には、電圧測定システム110の測定対象であるバッテリセル21と、抵抗素子22と、電圧測定システム110を制御する制御装置20とが併せて示されている。
本実施の形態に係る電圧測定システム110におけるマスター発振器36及びスレーブ発振器56の発振周波数の補正方法について説明する。
実施の形態3に係る電圧測定システムについて説明する。本実施の形態に係る電圧測定システムは、主に、二つの通信装置を備える点において、実施の形態1に係る電圧測定システム10と相違する。以下、本実施の形態に係る電圧測定システムについて、実施の形態1に係る電圧測定システム10との相違点を中心に説明する。
本実施の形態に係る電圧測定システムの全体構成について、図9を用いて説明する。図9は、本実施の形態に係る電圧測定システム210の機能構成を示すブロック図である。なお、図9には、電圧測定システム210の測定対象であるバッテリセル21と、抵抗素子22と、電圧測定システム210を制御する制御装置220とが併せて示されている。
本実施の形態に係る電圧測定システム210におけるマスター発振器36、36a、及びスレーブ発振器46、56の発振周波数の補正方法について説明する。
実施の形態4に係る電圧測定システムについて説明する。本実施の形態に係る電圧測定システムは、主に、二つの通信装置のうち、一方の通信装置から送信される基準信号を用いて、他方の通信装置が有するマスター発振器の発振周波数を補正する点において、実施の形態3に係る電圧測定システム210と相違する。以下、本実施の形態に係る電圧測定システムについて、実施の形態3に係る電圧測定システム210との相違点を中心に説明する。
本実施の形態に係る電圧測定システムの全体構成について、図10を用いて説明する。図10は、本実施の形態に係る電圧測定システム310の機能構成を示すブロック図である。なお、図10には、電圧測定システム310の測定対象であるバッテリセル21と、抵抗素子22と、電圧測定システム310を制御する制御装置20とが併せて示されている。
本実施の形態に係る電圧測定システム310におけるマスター発振器36a、及びスレーブ発振器46、56の発振周波数の補正方法について説明する。
実施の形態5に係る電圧測定システムについて説明する。本実施の形態に係る電圧測定システムは、主に、電圧測定装置が基準信号を生成する点において実施の形態1に係る電圧測定システム10と相違する。以下、本実施の形態に係る電圧測定システムについて、実施の形態1に係る電圧測定システム10との相違点を中心に説明する。
本実施の形態に係る電圧測定システムの全体構成について、図11を用いて説明する。図11は、本実施の形態に係る電圧測定システム410の機能構成を示すブロック図である。なお、図11には、電圧測定システム410の測定対象であるバッテリセル21と、抵抗素子22と、電圧測定システム410を制御する制御装置20とが併せて示されている。
本実施の形態に係る電圧測定システム410におけるスレーブ発振器56の発振周波数の補正方法について説明する。
実施の形態6に係る電圧測定システムについて説明する。本実施の形態に係る電圧測定システムは、主に、補正したスレーブ発振器が生成する第一クロック信号を用いて、スレーブ発振器より低速な発振器の補正を行う点において、実施の形態1に係る電圧測定システム10と相違する。以下、本実施の形態に係る電圧測定システムについて、実施の形態1に係る電圧測定システム10との相違点を中心に説明する。
本実施の形態に係る電圧測定システムの全体構成について、図12を用いて説明する。図12は、本実施の形態に係る電圧測定システム510の機能構成を示すブロック図である。なお、図12には、電圧測定システム510の測定対象であるバッテリセル21と、抵抗素子22と、電圧測定システム510を制御する制御装置20とが併せて示されている。
本実施の形態に係るスレーブ発振器46、56、及び、低速発振器546、556の補正方法について説明する。本実施の形態に係るスレーブ発振器46、56の補正方法は、実施の形態1に係るスレーブ発振器46、56の補正方法と同様である。
以上、本開示について、各実施の形態に基づいて説明したが、本開示は、上記各実施の形態に限定されるものではない。
20、220 制御装置
21 バッテリセル
22 抵抗素子
30、130、230、230a、330、330a 通信装置
32、32a、42、52 マルチプレクサ
33、33a、443 基準信号生成回路
34、34a、44、54、221、444、544、554 通信回路
35、35a、45、55 モード制御回路
36、36a、446 マスター発振器
40、50、140、440、540、550 電圧測定装置
41、51 選択回路
43、53 補正回路
46、56 スレーブ発振器
47、57、447 測定制御回路
48、58 電圧測定回路
81 パルスカウンタ
82 演算回路
83 記憶回路
139、239、239a、339a マスター補正回路
143 基準信号補正回路
146 高精度発振器
222 制御用発振器
546、556 低速発振器
549、559 低速補正回路
Claims (16)
- バッテリセルの電圧を測定する電圧測定システムであって、
第一マスタークロック信号を生成する第一マスター発振器と、前記第一マスタークロック信号に基づいて第一基準信号を生成する第一基準信号生成回路とを有する第一基準信号送信装置と、
第一クロック信号を生成する第一スレーブ発振器と、前記第一基準信号に基づいて前記第一スレーブ発振器の発振周波数を補正する第一補正回路と、第一電圧測定回路と、前記第一クロック信号に基づいて前記第一電圧測定回路を制御する第一測定制御回路とを有する第一電圧測定装置とを備え、
前記電圧測定システムは、
前記第一基準信号送信装置と前記第一電圧測定装置との間でコマンド信号を送受信する通常モードと、
前記第一基準信号を前記第一基準信号送信装置から前記第一電圧測定装置に送信し、前記第一基準信号を用いて、前記第一スレーブ発振器の発振周波数を前記第一マスター発振器の発振周波数に同期させる補正モードとを有する
電圧測定システム。 - 前記第一基準信号送信装置は、前記コマンド信号を送受信する通信回路と、
前記コマンド信号及び前記第一基準信号を送受信するマルチプレクサとをさらに有し、
前記マルチプレクサは、前記通常モードにおいて、前記コマンド信号を送受信し、前記補正モードにおいて、前記第一基準信号を送受信する
請求項1に記載の電圧測定システム。 - 前記第一電圧測定装置は、コマンド信号を送受信する第一通信回路と、
前記コマンド信号及び前記第一基準信号を送受信する第一マルチプレクサとをさらに有し、
前記第一マルチプレクサは、前記通常モードにおいて、前記コマンド信号を送受信し、前記補正モードにおいて、前記第一基準信号を送受信する
請求項1又は2に記載の電圧測定システム。 - 前記第一電圧測定装置は、前記コマンド信号及び前記第一基準信号を送受信する第一選択回路をさらに有し、
前記第一選択回路は、前記通常モードにおいて、前記コマンド信号を前記第一通信回路との間で送受信し、前記補正モードにおいて、前記第一基準信号を受信し、かつ、前記第一基準信号を前記第一補正回路及び前記第一マルチプレクサへ送信する
請求項3に記載の電圧測定システム。 - 前記補正モードにおいて、前記第一マルチプレクサは、前記第一基準信号を、前記電圧測定システム内の他の機器へ送信する
請求項3又は4に記載の電圧測定システム。 - 前記第一測定制御回路は、前記第一クロック信号に基づいて決定された周期で、前記第一電圧測定回路に電圧を測定させる
請求項1~5のいずれか1項に記載の電圧測定システム。 - 前記第一補正回路は、前記第一基準信号に含まれるパルス信号の個数をカウントし、前記個数に基づいて、前記第一スレーブ発振器の発振周波数を補正する
請求項1~6のいずれか1項に記載の電圧測定システム。 - 前記第一補正回路は、前記パルス信号の個数に対応する前記第一マスター発振器のクロックの個数と、前記第一基準信号に対応する期間における前記第一スレーブ発振器のクロックの個数とから算出される補正差分値に基づいて、前記第一スレーブ発振器の発振周波数を補正する
請求項7に記載の電圧測定システム。 - 前記第一補正回路は、カウントした前記個数が所定の範囲内でない場合に、前記第一スレーブ発振器の発振周波数の補正を行わない
請求項7又は8に記載の電圧測定システム。 - 前記第一電圧測定装置は、
前記第一スレーブ発振器より発振周波数が低い第一低速発振器と、
前記第一スレーブ発振器からの前記第一クロック信号に基づいて前記第一低速発振器の発振周波数を補正する第一低速補正回路とをさらに有する
請求項1~9のいずれか1項に記載の電圧測定システム。 - 前記第一低速補正回路は、前記第一基準信号に基づいて補正された前記第一スレーブ発振器からの前記第一クロック信号に基づいて前記第一低速発振器の発振周波数を補正する
請求項10に記載の電圧測定システム。 - 前記第一電圧測定装置を介して前記第一基準信号を受信する第二電圧測定装置をさらに備え、
前記第二電圧測定装置は、
第二クロック信号を生成する第二スレーブ発振器と、
前記第一基準信号に基づいて前記第二スレーブ発振器の発振周波数を補正する第二補正回路と、
第二電圧測定回路と、
前記第二クロック信号に基づいて前記第二電圧測定回路を制御する第二測定制御回路とを有する
請求項1~11のいずれか1項に記載の電圧測定システム。 - 前記第一基準信号送信装置は、
電圧測定回路と、
前記第一マスタークロック信号に基づいて前記電圧測定回路を制御する測定制御回路とを有する
請求項1~12のいずれか1項に記載の電圧測定システム。 - 前記第一マスター発振器より高精度な高精度クロック信号を生成する高精度発振器をさらに備え、
前記第一基準信号送信装置は、前記高精度クロック信号に基づいて、前記第一マスター発振器の発振周波数を補正する第一マスター補正回路をさらに備える
請求項1~12のいずれか1項に記載の電圧測定システム。 - 第二マスタークロック信号を生成する第二マスター発振器と、前記第二マスタークロック信号に基づいて第二基準信号を生成する第二基準信号生成回路とを有する第二基準信号送信装置をさらに備え、
前記第一基準信号送信装置及び前記第二基準信号送信装置の各々は、外部から入力されるクロック信号である制御用クロック信号を受信し、
前記第一基準信号送信装置は、前記制御用クロック信号に基づいて、前記第一マスター発振器の発振周波数を補正する第一マスター補正回路をさらに有し、
前記第二基準信号送信装置は、前記制御用クロック信号に基づいて、前記第二マスター発振器の発振周波数を補正する第二マスター補正回路をさらに有する
請求項1~12のいずれか1項に記載の電圧測定システム。 - 第二マスタークロック信号を生成する第二マスター発振器と、前記第二マスタークロック信号に基づいて第二基準信号を生成する第二基準信号生成回路とを有する第二基準信号送信装置をさらに備え、
前記第二基準信号送信装置は、前記第一マスタークロック信号に基づいて、前記第二マスター発振器の発振周波数を補正する第二マスター補正回路をさらに備える
請求項1~12のいずれか1項に記載の電圧測定システム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280018116.0A CN116917752A (zh) | 2021-03-05 | 2022-03-04 | 电压测定系统 |
EP22763425.0A EP4303594A1 (en) | 2021-03-05 | 2022-03-04 | Voltage measurement system |
JP2023503967A JPWO2022186375A1 (ja) | 2021-03-05 | 2022-03-04 | |
US18/457,068 US20230400522A1 (en) | 2021-03-05 | 2023-08-28 | Voltage measurement system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202163157251P | 2021-03-05 | 2021-03-05 | |
US63/157,251 | 2021-03-05 | ||
US202163244598P | 2021-09-15 | 2021-09-15 | |
US63/244,598 | 2021-09-15 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/457,068 Continuation US20230400522A1 (en) | 2021-03-05 | 2023-08-28 | Voltage measurement system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022186375A1 true WO2022186375A1 (ja) | 2022-09-09 |
Family
ID=83154485
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/009391 WO2022186376A1 (ja) | 2021-03-05 | 2022-03-04 | 組電池管理システム |
PCT/JP2022/009387 WO2022186373A1 (ja) | 2021-03-05 | 2022-03-04 | 電圧測定装置 |
PCT/JP2022/009389 WO2022186374A1 (ja) | 2021-03-05 | 2022-03-04 | 電圧測定装置、及び組電池システム |
PCT/JP2022/009390 WO2022186375A1 (ja) | 2021-03-05 | 2022-03-04 | 電圧測定システム |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/009391 WO2022186376A1 (ja) | 2021-03-05 | 2022-03-04 | 組電池管理システム |
PCT/JP2022/009387 WO2022186373A1 (ja) | 2021-03-05 | 2022-03-04 | 電圧測定装置 |
PCT/JP2022/009389 WO2022186374A1 (ja) | 2021-03-05 | 2022-03-04 | 電圧測定装置、及び組電池システム |
Country Status (4)
Country | Link |
---|---|
US (4) | US20230408586A1 (ja) |
EP (4) | EP4304043A1 (ja) |
JP (4) | JPWO2022186373A1 (ja) |
WO (4) | WO2022186376A1 (ja) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003115332A (ja) * | 2002-07-04 | 2003-04-18 | Denso Corp | 組み電池の電圧検出装置 |
US20080278115A1 (en) * | 2005-02-04 | 2008-11-13 | Mark Huggins | Battery Management System |
JP2009156845A (ja) * | 2007-12-28 | 2009-07-16 | Sanyo Electric Co Ltd | 電圧測定装置及びこれを具えた組電池システム |
JP2010273530A (ja) * | 2009-05-19 | 2010-12-02 | Sb Limotive Co Ltd | バッテリ管理システムおよびその駆動方法 |
JP2012154641A (ja) * | 2011-01-21 | 2012-08-16 | Denso Corp | 電池状態監視装置 |
JP2015055503A (ja) * | 2013-09-10 | 2015-03-23 | ローム株式会社 | 電圧検出装置 |
JP2015141062A (ja) | 2014-01-28 | 2015-08-03 | パナソニックIpマネジメント株式会社 | 組電池測定装置 |
JP2016115619A (ja) * | 2014-12-17 | 2016-06-23 | トヨタ自動車株式会社 | 電池監視システム |
US20160308257A1 (en) * | 2013-12-09 | 2016-10-20 | Robert Bosch Gmbh | Method for Transferring a Minimum and/or a Maximum Value of a Battery System Parameter and Battery System for Carrying Out such a Method |
JP2020167616A (ja) * | 2019-03-29 | 2020-10-08 | パナソニックIpマネジメント株式会社 | 時刻同期システムおよび中継装置 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08140204A (ja) * | 1994-11-08 | 1996-05-31 | Matsushita Electric Ind Co Ltd | 組電池の監視装置 |
US20080049266A1 (en) * | 2006-07-07 | 2008-02-28 | Advmatch Technology, Inc. | Image sensor without opto-mechanical system and manufacturing method thereof |
WO2010074290A1 (ja) * | 2008-12-28 | 2010-07-01 | 株式会社ソリトンシステムズ | 集積回路及びそれを用いた電池監視装置 |
JP2013207901A (ja) * | 2012-03-28 | 2013-10-07 | Sanyo Electric Co Ltd | 電池制御装置 |
JP6007385B2 (ja) * | 2012-04-09 | 2016-10-12 | エリーパワー株式会社 | 蓄電装置およびその制御方法ならびに電源装置 |
CN104603627B (zh) * | 2012-09-10 | 2017-11-03 | 瑞萨电子株式会社 | 半导体装置和电池电压监视装置 |
JP5907050B2 (ja) * | 2012-12-10 | 2016-04-20 | 株式会社デンソー | 電池システム |
JP2015139292A (ja) * | 2014-01-22 | 2015-07-30 | トヨタ自動車株式会社 | 電池ユニット及び電池システム |
JP2016075557A (ja) * | 2014-10-06 | 2016-05-12 | 三菱重工業株式会社 | 電池監視回路及び電池モジュール |
KR102367055B1 (ko) * | 2015-03-19 | 2022-02-24 | 삼성전자주식회사 | 전자 장치 및 전자 장치에서의 배터리 정보 제공 방법 |
JP6532831B2 (ja) * | 2016-01-28 | 2019-06-19 | 東芝デバイス&ストレージ株式会社 | 電圧監視回路及び電圧監視方法 |
WO2018051574A1 (ja) * | 2016-09-13 | 2018-03-22 | 三洋電機株式会社 | 管理装置および電源システム |
JP6899699B2 (ja) * | 2017-05-12 | 2021-07-07 | 株式会社デンソーテン | 異常検知装置および異常検知方法 |
JP6426804B2 (ja) * | 2017-08-10 | 2018-11-21 | ラピスセミコンダクタ株式会社 | 電池監視システム及び電池監視装置 |
TWI677777B (zh) * | 2017-10-05 | 2019-11-21 | 新唐科技股份有限公司 | 處理電路 |
JP7103026B2 (ja) * | 2018-07-30 | 2022-07-20 | 株式会社デンソー | 電池監視装置 |
WO2020045418A1 (ja) * | 2018-08-29 | 2020-03-05 | パナソニックIpマネジメント株式会社 | セル監視回路、及び、管理システム |
JP7458326B2 (ja) * | 2018-12-17 | 2024-03-29 | ヌヴォトンテクノロジージャパン株式会社 | 電池監視制御回路 |
CN113396503B (zh) * | 2019-01-31 | 2023-12-19 | 日本汽车能源株式会社 | 电池控制装置 |
JP7192691B2 (ja) | 2019-07-17 | 2022-12-20 | 株式会社デンソー | 組電池監視装置 |
-
2022
- 2022-03-04 WO PCT/JP2022/009391 patent/WO2022186376A1/ja active Application Filing
- 2022-03-04 WO PCT/JP2022/009387 patent/WO2022186373A1/ja active Application Filing
- 2022-03-04 EP EP22763426.8A patent/EP4304043A1/en active Pending
- 2022-03-04 JP JP2023503965A patent/JPWO2022186373A1/ja active Pending
- 2022-03-04 EP EP22763423.5A patent/EP4303592A1/en active Pending
- 2022-03-04 WO PCT/JP2022/009389 patent/WO2022186374A1/ja active Application Filing
- 2022-03-04 JP JP2023503966A patent/JPWO2022186374A1/ja active Pending
- 2022-03-04 EP EP22763424.3A patent/EP4303593A1/en active Pending
- 2022-03-04 WO PCT/JP2022/009390 patent/WO2022186375A1/ja active Application Filing
- 2022-03-04 JP JP2023503967A patent/JPWO2022186375A1/ja active Pending
- 2022-03-04 JP JP2023503968A patent/JPWO2022186376A1/ja active Pending
- 2022-03-04 EP EP22763425.0A patent/EP4303594A1/en active Pending
-
2023
- 2023-08-25 US US18/456,299 patent/US20230408586A1/en active Pending
- 2023-08-25 US US18/456,273 patent/US20230400521A1/en active Pending
- 2023-08-28 US US18/457,113 patent/US20230402865A1/en active Pending
- 2023-08-28 US US18/457,068 patent/US20230400522A1/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003115332A (ja) * | 2002-07-04 | 2003-04-18 | Denso Corp | 組み電池の電圧検出装置 |
US20080278115A1 (en) * | 2005-02-04 | 2008-11-13 | Mark Huggins | Battery Management System |
JP2009156845A (ja) * | 2007-12-28 | 2009-07-16 | Sanyo Electric Co Ltd | 電圧測定装置及びこれを具えた組電池システム |
JP2010273530A (ja) * | 2009-05-19 | 2010-12-02 | Sb Limotive Co Ltd | バッテリ管理システムおよびその駆動方法 |
JP2012154641A (ja) * | 2011-01-21 | 2012-08-16 | Denso Corp | 電池状態監視装置 |
JP2015055503A (ja) * | 2013-09-10 | 2015-03-23 | ローム株式会社 | 電圧検出装置 |
US20160308257A1 (en) * | 2013-12-09 | 2016-10-20 | Robert Bosch Gmbh | Method for Transferring a Minimum and/or a Maximum Value of a Battery System Parameter and Battery System for Carrying Out such a Method |
JP2015141062A (ja) | 2014-01-28 | 2015-08-03 | パナソニックIpマネジメント株式会社 | 組電池測定装置 |
JP2016115619A (ja) * | 2014-12-17 | 2016-06-23 | トヨタ自動車株式会社 | 電池監視システム |
JP2020167616A (ja) * | 2019-03-29 | 2020-10-08 | パナソニックIpマネジメント株式会社 | 時刻同期システムおよび中継装置 |
Also Published As
Publication number | Publication date |
---|---|
US20230400522A1 (en) | 2023-12-14 |
WO2022186376A1 (ja) | 2022-09-09 |
EP4303592A1 (en) | 2024-01-10 |
EP4304043A1 (en) | 2024-01-10 |
JPWO2022186374A1 (ja) | 2022-09-09 |
US20230408586A1 (en) | 2023-12-21 |
WO2022186373A1 (ja) | 2022-09-09 |
JPWO2022186373A1 (ja) | 2022-09-09 |
EP4303594A1 (en) | 2024-01-10 |
WO2022186374A1 (ja) | 2022-09-09 |
EP4303593A1 (en) | 2024-01-10 |
JPWO2022186375A1 (ja) | 2022-09-09 |
JPWO2022186376A1 (ja) | 2022-09-09 |
US20230402865A1 (en) | 2023-12-14 |
US20230400521A1 (en) | 2023-12-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3217556A1 (en) | Synchronization of outputs from multiple digital-to-analog converters | |
US7391353B2 (en) | Analog/digital converter | |
US11552338B2 (en) | Method of monitoring a battery, monitoring system and monitoring circuit | |
EP1227591A1 (en) | Frequency measurement circuit | |
CN110069009B (zh) | 多通道时间数字转换器和光电探测装置 | |
JP2012154641A (ja) | 電池状態監視装置 | |
JP3898694B2 (ja) | シリアルデータ伝送装置 | |
US7576617B2 (en) | Semiconductor integrated circuit device | |
JP4310036B2 (ja) | タイミング信号発生回路、及び、それを備えた半導体検査装置 | |
CN113031428A (zh) | 实时时钟装置以及电子设备 | |
KR101795199B1 (ko) | 신호 처리 장치 | |
US11728799B2 (en) | Measuring pin-to-pin delays between clock routes | |
CN114868337A (zh) | 用于同步两个系统的方法和装置 | |
WO2022186375A1 (ja) | 電圧測定システム | |
US6304119B1 (en) | Timing generating apparatus with self-calibrating capability | |
JP2018200666A (ja) | 検出システム、センサ及びマイクロコンピュータ | |
JP2002252606A (ja) | 同期補正回路 | |
TWI473432B (zh) | 多相位時脈除頻器 | |
JP2020182198A (ja) | 時刻同期計測システム | |
CN116917752A (zh) | 电压测定系统 | |
JPWO2007105487A1 (ja) | パルス幅制御信号発生回路、電力変換制御回路および電力変換制御用lsi | |
US6373313B1 (en) | Delay time regulation method and delay time regulation circuit | |
US20090243731A1 (en) | Apparatus With Clock Generation Function, Method For Setting Reference Frequency, And Method For Adjusting Reference Frequency | |
JP2624681B2 (ja) | タイミング信号発生器 | |
JP4230808B2 (ja) | 時刻同期方法および通信システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22763425 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023503967 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280018116.0 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022763425 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022763425 Country of ref document: EP Effective date: 20231005 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |