WO2024004118A1 - Dispositif de commande de l'augmentation de la température d'une batterie de stockage et système d'augmentation de la température d'une batterie de stockage - Google Patents

Dispositif de commande de l'augmentation de la température d'une batterie de stockage et système d'augmentation de la température d'une batterie de stockage Download PDF

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Publication number
WO2024004118A1
WO2024004118A1 PCT/JP2022/026158 JP2022026158W WO2024004118A1 WO 2024004118 A1 WO2024004118 A1 WO 2024004118A1 JP 2022026158 W JP2022026158 W JP 2022026158W WO 2024004118 A1 WO2024004118 A1 WO 2024004118A1
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Prior art keywords
storage battery
current
voltage
current mode
limit voltage
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PCT/JP2022/026158
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English (en)
Japanese (ja)
Inventor
勢児 平井
朗子 田渕
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三菱電機株式会社
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Priority to JP2024530190A priority Critical patent/JPWO2024004118A1/ja
Priority to PCT/JP2022/026158 priority patent/WO2024004118A1/fr
Publication of WO2024004118A1 publication Critical patent/WO2024004118A1/fr

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    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to a storage battery temperature increase control device and a storage battery temperature increase system.
  • Patent Document 1 by providing a reactor with a different inductance in addition to the normally used reactor, the amplitude of the ripple current is increased, the amount of heat generated by the storage battery is increased, and the process of warming the storage battery can be efficiently performed.
  • the system is described.
  • storage batteries are required to maintain their upper and lower voltage limits from the viewpoint of safety and durability.
  • the upper and lower limit voltages should not be exceeded. Therefore, a situation may occur in which sufficient ripple current necessary for temperature rise cannot be passed through the storage battery.
  • the present application was made in order to solve the above-mentioned problems, and even in a fully charged state or fully discharged state, sufficient current for raising the temperature can be passed through the storage battery, and the storage battery can be quickly discharged. It is an object of the present invention to provide a storage battery temperature increase control device and a storage battery temperature increase system that can increase the temperature.
  • the temperature increase control device for a storage battery disclosed in the present application is a temperature increase control device for a storage battery for increasing the temperature of the storage battery by passing a current through the storage battery, and the device includes an intermittent pulse in the direction of flowing into the storage battery.
  • a bidirectional current mode in which a bidirectional current flows alternately with one pulse of directional current, and the positive current mode, the negative current mode, and the negative current mode correspond to the temperature of the storage battery and the voltage of the storage battery.
  • the current mode in which the storage battery generates the largest amount of heat is selected, and the current is controlled to flow through the storage battery.
  • the temperature raising system for a storage battery disclosed in the present application is a temperature raising system for a storage battery that increases the temperature of the storage battery by passing a current through the storage battery, and is connected to the storage battery and flows in the direction of flowing into the storage battery.
  • a positive direction current mode in which a positive direction current which is an intermittent pulsed current flows
  • a negative direction current mode in which a negative direction current which is an intermittent pulsed current flows in a direction flowing out from the storage battery
  • one pulse of the positive direction current is a pulse of the positive direction current.
  • the configuration is such that current in the positive current mode, the negative current mode, and the bidirectional current mode can be passed through the storage battery, and further, depending on the temperature of the storage battery and the voltage of the storage battery,
  • the one or more devices are controlled to select a current mode in which the storage battery generates the largest amount of heat from among the positive direction current mode, the negative direction current mode, and the bidirectional current mode, and cause current to flow through the storage battery. It is equipped with a storage battery temperature increase control device.
  • FIG. 1 is a block diagram showing the configuration of a storage battery temperature increase control device according to Embodiment 1.
  • FIG. FIG. 2 is a block diagram showing the configuration of a storage battery information acquisition unit of the storage battery temperature increase control device according to the first embodiment.
  • FIG. 2 is a block diagram showing the internal configuration of a charging/discharging circuit controller of the storage battery temperature increase control device according to the first embodiment.
  • 5 is a flowchart showing processing in a calorific value calculation unit of the storage battery temperature increase control device according to the first embodiment.
  • FIG. 3 is a diagram illustrating the operation of the storage battery temperature increase control device according to the first embodiment in a forward current mode.
  • FIG. 2 is a diagram illustrating the operation of the storage battery temperature increase control device according to the first embodiment in a negative direction current mode.
  • FIG. 3 is a diagram illustrating the operation of the storage battery temperature increase control device according to the first embodiment in a bidirectional current mode.
  • FIG. 2 is a diagram showing an example of frequency characteristics of impedance of a storage battery. It is a diagram showing an example of a Nyquist plot of a storage battery.
  • FIG. 2 is a circuit diagram showing an example of an equivalent circuit model of a general storage battery.
  • FIG. 7 is a diagram showing a current waveform in a bidirectional current mode of the storage battery temperature increase control device according to the second embodiment.
  • FIG. 7 is a block diagram showing the configuration of a charging/discharging circuit controller of a storage battery temperature increase control device according to a fourth embodiment.
  • FIG. 7 is a block diagram showing the configuration of a storage battery temperature increasing system according to a fifth embodiment.
  • FIG. 2 is a block diagram showing an example of a hardware configuration of a charging/discharging circuit controller according to the present application.
  • FIG. 1 is a block diagram showing the configuration of a storage battery temperature increase control device 10 according to the first embodiment.
  • the storage battery temperature increase control device includes a storage battery information acquisition unit 2, a charging/discharging circuit controller 3, and a charging/discharging circuit 4 that generates a current including a frequency component.
  • the storage battery 1 whose temperature is to be raised is composed of a secondary battery such as a lithium ion battery or a nickel metal hydride battery, for example. Furthermore, various shapes such as a cylindrical shape, a square shape, a laminate shape, etc. can be adopted as the shape of the secondary battery applied to this embodiment. Further, the storage battery 1 may be a battery pack in which a plurality of storage batteries having the same specifications such as the same rated voltage are connected in series or in parallel, or connected in series and parallel.
  • FIG. 2 is a block diagram showing the configuration of the storage battery information acquisition unit 2.
  • the storage battery information acquisition section 2 includes a voltage measurement section 21, a current measurement section 22, a temperature measurement section 23, and an output section 24.
  • the voltage measurement unit 21 is composed of a voltage sensor that measures the voltage of the storage battery 1.
  • the current measurement unit 22 is configured with a current sensor that measures the current flowing through the storage battery 1.
  • the temperature measurement unit 23 is configured of a temperature sensor using, for example, a thermistor, and measures the temperature of the storage battery 1.
  • the measured voltage, current, and temperature of the storage battery 1 are converted into, for example, digital signals by the output unit 24 and outputted to the charging/discharging circuit controller 3 as data.
  • FIG. 3 is a block diagram showing the internal configuration of the charging/discharging circuit controller 3.
  • the charge/discharge circuit controller 3 includes an input section 31, a calorific value calculation section 32, and an output section 33. Data on the voltage, current, and temperature of the storage battery 1 output from the storage battery information acquisition unit 2 are input to the input unit 31 .
  • the calorific value calculation section 32 Based on the data from the input section 31, the calorific value calculation section 32 calculates the calorific value of the storage battery 1.
  • the calorific value calculation unit 32 calculates a current waveform only in the positive direction (this is referred to as a positive direction current mode) and a current waveform only in the negative direction (this is referred to as a negative direction current mode).
  • the current mode that generates the largest amount of heat is selected from each of the current waveforms in both directions (this is referred to as a bidirectional current mode), and the charging/discharging circuit 4 is controlled via the output section 33 to provide the storage battery 1 with the most A current mode current that generates a large amount of heat is passed through to raise the temperature of the storage battery.
  • FIG. 4 is a diagram showing a flowchart during temperature raising operation of the storage battery 1.
  • step S1 the temperature T of the storage battery is measured.
  • step S2 it is determined whether T is less than or equal to a threshold value T1 that requires temperature raising processing of the storage battery. If T is higher than the threshold value T1, the process moves to step S9, and the process ends without performing the temperature increase process. On the other hand, in step S2, if the temperature of the storage battery is equal to or lower than the threshold T1, the process moves to step S3.
  • step S3 the voltage of the storage battery is measured. Then, in step S4, the difference between the voltage of the storage battery measured in S3, the upper limit voltage, and the lower limit voltage is calculated.
  • the upper limit voltage and lower limit voltage of the storage battery are set in advance as specifications of the storage battery.
  • the storage battery 1 is an assembled battery in which multiple storage batteries with the same specifications such as rated voltage are connected, the upper limit voltage and lower limit voltage for each storage battery are set from the upper and lower limit voltages of the assembled batteries and the number of series batteries. do.
  • step S5 a current waveform in the positive direction only (positive direction current mode), a current waveform in the negative direction only (negative direction current mode), and a current waveform in the positive direction and the negative direction, which have voltage fluctuations within the upper and lower limit voltages, are created alternately.
  • the amount of heat generated is calculated by multiplying the square of the effective value of the current waveform by the internal resistance of the storage battery.
  • step S6 the current mode that generates the largest amount of heat is selected, and in step S7, the charging/discharging circuit 4 passes current through the storage battery 1 in the selected current mode.
  • the temperature T of the storage battery is measured in step S8, and it is determined whether the temperature T2 is higher than the temperature threshold value T2 at which the temperature raising process is to be terminated. If the temperature is lower than T2, the temperature raising process is continued, If so, the process moves to step S9, and the temperature raising process ends.
  • T1 is assumed to be at an extremely low temperature of, for example, -20°C or lower, where charging and discharging of the storage battery is prohibited, but since the performance of the storage battery will decrease slightly even at low temperatures, it should be set to around 5°C, for example. Good too.
  • T2 is assumed to be around room temperature (near 25°C), but may be, for example, around 10°C in order to shorten the temperature rise time.
  • FIG. 5 is a diagram showing an example of a current waveform and voltage fluctuation between terminals of a storage battery in the forward current mode.
  • the voltage between the terminals of the storage battery when current is applied is the voltage of the storage battery plus a voltage drop caused by impedance such as internal resistance of the storage battery when current is applied.
  • the current waveform in the forward current mode is a current waveform of intermittent pulses in the positive direction.
  • the lower part of FIG. 5 shows the voltage fluctuation of the storage battery when a current having the current waveform in the positive direction current mode shown in the upper part is passed.
  • the current flowing into the storage battery is defined as a positive current
  • the current flowing out of the storage battery is defined as a negative current.
  • the voltage of the storage battery fluctuates at a value higher than the current voltage Vt.
  • the amplitude of the current is set to an amplitude limited by the upper limit voltage Vmax so that the voltage between the terminals of the storage battery does not exceed the upper limit voltage Vmax. Therefore, when a current in the positive direction current mode is caused to flow so that the amplitude is equal to the difference (Vmax-Vt) between the upper limit voltage Vmax and the current voltage Vt, the amount of heat generated by the storage battery is maximized and the temperature rise time is shortened.
  • the storage battery 1 is an assembled battery, there may be variations in the voltage of each storage battery in the assembled battery, so the voltage of the storage battery with the highest voltage among the storage batteries should be similarly Determined by the following steps. Here, it is assumed that the voltage of each storage battery in the assembled battery can be detected.
  • FIG. 6 is a diagram showing an example of the current waveform and the voltage fluctuation between the terminals of the storage battery in the negative direction current mode.
  • the current waveform in the negative direction current mode is a current waveform of intermittent pulses in the negative direction.
  • the lower part of FIG. 6 shows the voltage fluctuation of the storage battery when a current having the current waveform in the negative direction current mode shown in the upper part is passed.
  • a current in the negative direction current mode When a current in the negative direction current mode is passed, it fluctuates at a value lower than the current voltage Vt.
  • the amplitude of the current is set to an amplitude limited by the lower limit voltage Vmin so that the voltage between the terminals of the storage battery does not exceed the lower limit voltage Vmin.
  • the storage battery 1 is an assembled battery, the voltage of the storage battery with the lowest voltage among the storage batteries in the assembled battery is determined using the same procedure so as not to exceed the lower limit voltage of that storage battery.
  • FIG. 7 is a diagram showing an example of the current waveform and the voltage fluctuation between the terminals of the storage battery in the bidirectional current mode.
  • the amplitude of the current is set to an amplitude limited by the upper limit voltage Vmax and the lower limit voltage Vmin so that the voltage between the terminals of the storage battery does not exceed the upper limit voltage Vmax and the lower limit voltage Vmin.
  • Ru Therefore, among Vmax-Vt, which is the difference between the current voltage Vt and the upper limit voltage Vmax, and Vt-Vmin, which is the difference between the lower limit voltage Vmin, the current amplitude that is the smaller value becomes the maximum amplitude, and the temperature rise time is Be the shortest. Note that although FIG.
  • the voltage is limited to the upper limit voltage Vmax, it may of course be limited to the lower limit voltage Vmin. If the storage battery 1 is an assembled battery, the voltage of the storage battery with the highest voltage among the storage batteries in the assembled battery does not exceed the upper limit voltage of that storage battery, and the voltage of the storage battery with the lowest voltage exceeds the lower limit voltage of that storage battery. A similar procedure is used to ensure that the limit is not exceeded.
  • the heat generation calculation unit 32 calculates the heat generated when a current in the positive direction current mode, when a current in the negative direction current mode is passed, and when a current in the bidirectional current mode is passed, based on the current voltage Vt.
  • the amount of heat (per unit time, for example) is calculated using the resistance of the storage battery, and the current mode that provides the shortest heating time, that is, the highest amount of heat generation, is selected. Further, the current amplitude at this time does not need to be the maximum, and may be any current amplitude that can be passed in the charging/discharging circuit used, and the current waveform is not particularly limited, such as a rectangular wave or a sine wave.
  • step S3 it is possible to select the current waveform of the positive direction current mode or the negative direction current mode. For example, if the voltage of the storage battery is higher than the median value of the upper and lower voltage limits, it is clear that the amplitude of the current waveform that can flow through the storage battery is larger in negative current mode than in positive current mode. It is. Conversely, if the voltage of the storage battery is lower than the median value of the upper limit voltage and lower limit voltage, the amplitude of the current waveform that can be passed through the storage battery is that the current waveform in positive direction current mode is larger than the current waveform in negative direction current mode. it is obvious.
  • the positive direction current mode or the negative direction current mode is selected, and after calculating the difference between the upper and lower limit voltages in step S4, the mode is selected according to the voltage in step S5.
  • the amount of heat generated in the positive direction current mode, negative direction current mode, and bidirectional current mode may be calculated.
  • FIG. 8 is a diagram showing an example of frequency characteristics of impedance of a storage battery.
  • the impedance characteristic of the storage battery has the lowest impedance near 1 kHz, and at frequencies above that, the impedance tends to increase as the frequency increases.
  • the higher the frequency of the current the greater the amount of heat generated by the storage battery, and the shorter the time required to raise the temperature of the storage battery. Therefore, it is desirable that the frequency of the current waveform is higher.
  • charging and discharging reactions proceed if the current is 1 kHz or less.
  • the frequency of the current waveform is 1 kHz or more.
  • the number of repetitions of intermittent pulses per second and in the case of bidirectional current mode, the number of cycles per second, with one positive and negative pulse each as one period. Become.
  • harmonic frequency components are included depending on the waveform, the amount of heat generated may be calculated by taking these into consideration.
  • the current mode that generates the largest amount of heat is selected among the positive direction current mode, negative direction current mode, and bidirectional current mode according to the current voltage of the storage battery 1.
  • FIG. 9 is a diagram showing an example of a Nyquist plot of a storage battery.
  • Z' on the horizontal axis shows the real component of the impedance of the storage battery
  • Z'' on the vertical axis shows the imaginary component of the impedance of the storage battery.
  • the frequency of the semicircular part showing the charge/discharge reaction of the storage battery is typical The frequency is in the range of 1kHz to 1Hz.
  • This semicircle shows the charging/discharging reaction of the storage battery.
  • Figure 10 is a diagram showing an example of an equivalent circuit model of a general storage battery.
  • the circuit consists of a capacitor C2 and a resistor R1 that shows the charging/discharging reaction of the storage battery, and the capacitor C1. It's okay.
  • the time constant ⁇ of the charging/discharging reaction can be calculated from the product of R1 and C1, which indicate charging/discharging of the storage battery.
  • the frequency of the current waveform is 1 kHz or more, so considering that the amount of charge flowing in and out with the current waveform having a frequency of 1 kHz or more, the state of charge of the storage battery changes significantly. It's hard to imagine doing that, and there's no problem. Note that if the rest time is too long, heat will be radiated from the storage battery to the surrounding atmosphere and the temperature will drop, so the rest time that does not cause the temperature to drop will be the maximum.
  • FIG. 11 is a diagram showing an example of a current waveform in bidirectional current mode.
  • the current waveform in the bidirectional current mode shown in FIG. 7 is symmetrical in the positive direction and the negative direction. Examples of this current waveform include current waveforms such as ripple current derived from a power converter.
  • the current waveform in bidirectional current mode may be asymmetrical in the positive and negative directions, and any waveform can be used as long as the current integral value for one pulse in the positive direction is equal to the current integral value for one pulse in the negative direction. Any waveform may be used.
  • 11 is a combination of a waveform in which the amplitude in the positive direction is decreased and the time is lengthened accordingly, and a waveform in which the amplitude in the negative direction is increased and the time is shortened accordingly. Further, a time period during which no current is caused to flow may be provided between the positive direction and the negative direction. Note that since we are assuming an extremely low temperature environment where storage batteries cannot be charged and discharged, we have created a waveform in which the current integral values in the positive and negative directions are equal. The current integral values of are not necessarily equal. In other words, the current waveforms in both directions may have a DC offset.
  • the pause time during which no current is applied is set to be equal to or longer than the time constant of the charging/discharging reaction of the storage battery. , the accumulation of charge in the electric double layer can be prevented. Thereby, current in the positive direction current mode or negative direction current mode with an appropriate pause time can be continued to flow through the storage battery, and the temperature of the storage battery can be increased without accumulating electric charge. Further, by setting the current waveform in the bidirectional current mode to a waveform in which the integral value of the current in the positive direction and the negative direction, that is, the amount of electricity is equal, it is possible to raise the temperature without causing charging and discharging.
  • Embodiment 3 Embodiment 3 will be described.
  • the storage battery temperature increase control device described in Embodiments 1 and 2 so far is in a bidirectional current mode, that is, it is possible to flow ripple current through the storage battery.
  • Embodiment 3 a method for utilizing this ripple current Explain.
  • this third embodiment by continuing to flow a minute ripple current as a ripple current that is a current waveform in bidirectional current mode, the temperature is prevented from dropping to an extremely low temperature where charging and discharging cannot be performed, and the temperature is always kept close to room temperature. Control to maintain a predetermined temperature.
  • the voltage may be adjusted by discharging the storage battery after operation so that ripple current can flow.
  • a minute ripple current (current in bidirectional current mode) whose current amplitude is less than or equal to the predetermined amplitude continues to flow.
  • FIG. 12 is a block diagram showing the configuration of the charging/discharging circuit controller 3 according to the fourth embodiment.
  • the overall configuration of the storage battery temperature increase control device is the same as the configuration shown in FIG.
  • the configuration of the storage battery temperature increase control device according to the first embodiment differs in that the charging/discharging circuit controller 3 includes a usage history storage unit 5 and a usage prediction unit 6.
  • the usage history storage unit 5 extracts usage history mainly from the measurement data of the storage battery current from the storage battery information acquisition unit 2 and stores it.
  • the usage history prediction unit 6 predicts the next storage battery usage time based on the usage history stored in the usage history storage unit.
  • the charging/discharging circuit controller 3 controls the charging/discharging circuit 4 to raise the temperature of the storage battery 1 based on the predicted next storage battery use time so as to raise the temperature of the storage battery in time for use.
  • the temperature raising process can be completed by the time of next use.
  • FIG. 13 is a block diagram showing the configuration of a storage battery temperature increasing system according to the fifth embodiment.
  • a storage battery temperature increase control device 100 constituting a temperature increase system according to the fifth embodiment includes the storage battery information acquisition section 2 and the charging/discharging circuit controller 3 described in the first embodiment.
  • the charging/discharging circuit is divided into a charging circuit 41 and a discharging circuit 42 external to the storage battery temperature increase control device 100, and further includes a balancer circuit 43.
  • the storage battery is a battery pack 11 in which a plurality of storage batteries with the same specifications are connected in series and in parallel.
  • the charging circuit 41 may be any circuit as long as it can charge the storage battery, and is mainly assumed to be a circuit inside a charging device for charging the storage battery, including a converter.
  • device 410 includes charging circuit 41 .
  • the discharge circuit 42 is a circuit including an inverter or a converter, and it is assumed that a power conversion circuit of a power conversion device for supplying power to a load is operated as the discharge circuit 42.
  • device 420 is a device 420 that includes a discharge circuit 42 .
  • the balancer circuit 43 is a circuit that adjusts the voltage of the storage battery. For example, when multiple storage batteries are connected in series, the balancer circuit 43 is used to adjust the voltage of each storage battery. It is equipped. That is, the device 430 includes a balancer circuit that adjusts the voltage of the storage battery.
  • the balancer circuit 43 may be included in a device 410 including a charging circuit or a device 420 including a discharging circuit. It is assumed that this balancer circuit is operated as a charging circuit or a discharging circuit.
  • the charging/discharging circuit controller 3 included in the storage battery temperature increase control device 100 controls these external devices to switch to the forward current mode in a manner similar to that described in Embodiments 1 to 4.
  • the temperature of the storage battery included in the battery pack 11 is controlled to increase by flowing a current in the negative direction current mode or the bidirectional current mode to the battery pack 11.
  • current can be passed through the storage battery by current control in the charging circuit 41.
  • the magnitude of the current waveform in the forward current mode is determined so that the voltage of the storage battery with the highest voltage among the storage batteries in the assembled battery 11 does not exceed the upper limit voltage of that storage battery.
  • the current waveform in the negative direction current mode if the discharge circuit 42 is equipped with a circuit capable of pulse discharge of the storage battery, the current waveform in the negative direction current mode has an intermittent pulse of 1 kHz or more as described in the first embodiment. It is possible to discharge the storage battery.
  • the balancer circuit 43 it is possible to use switching control of the balancer circuit 43 to cause a current having a current waveform in a negative direction current mode to flow through the storage battery.
  • the balancer circuit 43 is preferably of a passive type that can only discharge the storage battery.
  • the amplitude of the current waveform in the negative direction current mode is determined so that the voltage of the storage battery with the lowest voltage among the storage batteries in the assembled battery does not exceed the lower limit voltage of that storage battery.
  • the current waveform in the bidirectional current mode it is possible to conduct current to the storage battery by ripple current or the like generated by switching of the power conversion circuit as a discharge circuit.
  • the amplitude of the current waveform in bidirectional current mode is such that, among the storage batteries in the battery pack, the voltage of the storage battery with the highest voltage does not exceed the upper limit voltage of that storage battery, and the voltage of the storage battery with the lowest voltage does not exceed the lower limit voltage of that storage battery. determined so as not to exceed.
  • the storage battery temperature raising system is connected to the storage battery, and can flow current in at least one of the current modes of the positive direction current mode, the negative direction current mode, and the bidirectional current mode to the storage battery.
  • one or more devices one or more of device 410, device 420, device 430
  • the one or more devices allow the storage battery to operate in a positive current mode, a negative current mode, and a bidirectional current mode.
  • the storage battery temperature increase control device 100 selects the current mode in which the storage battery 11 generates the largest amount of heat among the positive direction current mode, negative direction current mode, and bidirectional current mode. It is configured to control one or more devices to cause current to flow through the storage battery 11 .
  • FIG. 13 a configuration is shown in which all of the external charging circuit, discharging circuit, and balancer circuit are controlled to flow a current in the positive direction current mode, a current in the negative direction current mode, and a current in the bidirectional current mode to the assembled battery 11.
  • not all circuits need to be included. Since storage batteries are generally left at a voltage close to a fully charged state, there is no problem even with a configuration in which current in the forward current mode cannot flow. Therefore, it is desirable to have a configuration that allows current to flow in at least the negative direction current mode and the bidirectional current mode.
  • the temperature raising system for a storage battery having this configuration includes one or more devices (device 410, device 420, device 430), and is configured such that current in a negative direction current mode and a bidirectional current mode can flow through the storage battery using one or more of these devices.
  • the temperature increase control device 100 is configured to control one or more devices so as to select the current mode in which the storage battery generates a larger amount of heat from among the negative direction current mode and the bidirectional current mode and to cause current to flow through the storage battery 11. Ru.
  • the charge/discharge circuit controller 3 in each of the above embodiments includes an arithmetic processing unit 301 such as a CPU (Central Processing Unit), and a memory that exchanges data with the arithmetic processing unit 301.
  • the device 302 includes an input/output interface 303 for inputting and outputting signals between the arithmetic processing unit 301 and the outside.
  • the arithmetic processing device 301 may include an ASIC (Application Specific Integrated Circuit), an IC (Integrated Circuit), a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), various signal processing circuits, and the like.
  • the storage device 302 includes a RAM (Random Access Memory) configured to be able to read and write data from the arithmetic processing unit 301, a ROM (Read Only Memory) configured to be able to read data from the arithmetic processing unit 301, etc. It is being
  • the calorific value calculation section 32 is composed of, for example, an arithmetic processing unit 301 and a storage device 302 in which programs and data are stored.
  • the input interface of the input/output interface 303 corresponds to, for example, the storage battery information acquisition unit 2, and the output interface outputs a signal from the arithmetic processing unit 301 to the charging/discharging circuit 4 or the external device described in the fifth embodiment. It consists of circuits for

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Abstract

La présente invention concerne un dispositif de commande de l'augmentation de la température d'une batterie de stockage (10) permettant d'augmenter la température d'une batterie de stockage (1) par la circulation d'un courant dans la batterie de stockage (1), comprenant : un mode de courant de direction positive dans lequel un courant de direction positive qui est un courant pulsé intermittent dans une direction vers la batterie de stockage (1) est transmis ; un mode de courant de direction négative dans lequel un courant de direction négative qui est un courant pulsé intermittent dans une direction hors de la batterie de stockage (1) est transmis ; et un mode de courant bidirectionnel dans lequel un courant bidirectionnel comprenant une impulsion du courant de direction positive et une impulsion du courant de direction négative qui circulent en alternance est transmis. Le dispositif de commande de l'augmentation de la température de la batterie de stockage (10) effectue une commande de telle sorte que, lorsque le courant circule dans la batterie de stockage (1), l'un des modes de courant parmi le mode de courant de direction positive, le mode de courant de direction négative et le mode de courant bidirectionnel qui produit la plus grande quantité de chaleur générée par la batterie de stockage (1) est sélectionné en fonction de la température et de la tension de la batterie de stockage (1).
PCT/JP2022/026158 2022-06-30 2022-06-30 Dispositif de commande de l'augmentation de la température d'une batterie de stockage et système d'augmentation de la température d'une batterie de stockage WO2024004118A1 (fr)

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PCT/JP2022/026158 WO2024004118A1 (fr) 2022-06-30 2022-06-30 Dispositif de commande de l'augmentation de la température d'une batterie de stockage et système d'augmentation de la température d'une batterie de stockage

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PCT/JP2022/026158 WO2024004118A1 (fr) 2022-06-30 2022-06-30 Dispositif de commande de l'augmentation de la température d'une batterie de stockage et système d'augmentation de la température d'une batterie de stockage

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010093871A (ja) * 2008-10-03 2010-04-22 Denso Corp バッテリの昇温制御装置
WO2012060016A1 (fr) * 2010-11-05 2012-05-10 三菱電機株式会社 Dispositif de chargement/déchargement et procédé de commande du chargement et du déchargement
JP2015176821A (ja) * 2014-03-17 2015-10-05 トヨタ自動車株式会社 リチウムイオン二次電池の充電方法
JP2019160502A (ja) * 2018-03-12 2019-09-19 三菱自動車工業株式会社 バッテリ装置
JP2020177840A (ja) * 2019-04-19 2020-10-29 トヨタ紡織株式会社 二次電池の昇温方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010093871A (ja) * 2008-10-03 2010-04-22 Denso Corp バッテリの昇温制御装置
WO2012060016A1 (fr) * 2010-11-05 2012-05-10 三菱電機株式会社 Dispositif de chargement/déchargement et procédé de commande du chargement et du déchargement
JP2015176821A (ja) * 2014-03-17 2015-10-05 トヨタ自動車株式会社 リチウムイオン二次電池の充電方法
JP2019160502A (ja) * 2018-03-12 2019-09-19 三菱自動車工業株式会社 バッテリ装置
JP2020177840A (ja) * 2019-04-19 2020-10-29 トヨタ紡織株式会社 二次電池の昇温方法

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