WO2020115964A1 - Dispositif de boîtier de batterie et dispositif d'alimentation électrique - Google Patents

Dispositif de boîtier de batterie et dispositif d'alimentation électrique Download PDF

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Publication number
WO2020115964A1
WO2020115964A1 PCT/JP2019/034250 JP2019034250W WO2020115964A1 WO 2020115964 A1 WO2020115964 A1 WO 2020115964A1 JP 2019034250 W JP2019034250 W JP 2019034250W WO 2020115964 A1 WO2020115964 A1 WO 2020115964A1
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WIPO (PCT)
Prior art keywords
battery
storage space
battery case
pressure source
adjusting
Prior art date
Application number
PCT/JP2019/034250
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English (en)
Japanese (ja)
Inventor
淳也 西山
大祐 新井
直哉 後藤
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三桜工業株式会社
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Publication of WO2020115964A1 publication Critical patent/WO2020115964A1/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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
    • H01M10/0562—Solid materials
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • 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
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • One aspect of the present invention relates to a battery case device and a power supply device, for example, a battery case device for operating a battery including all solid-state battery cells and a power supply device using the battery case device.
  • Patent Document 1 describes a battery module including a battery case for accommodating a single battery that is a lithium-ion all-solid-state battery.
  • a pressurized gas is sealed in a battery case that houses a single battery.
  • the unit cell is pressurized and compressed by the pressure of this gas.
  • the battery case is a closed system.
  • the means for adjusting the pressure in the battery module only changes the pressure depending on the gas temperature.
  • An object of one aspect of the present invention is to provide a battery case device capable of obtaining a stable output from a battery including all solid-state battery cells and a power supply device using the battery case device.
  • the inventors of the present invention did not enclose the gas in the battery case to hermetically seal the battery case, but instead vented the battery case by electrode-binding force of a battery including all-solid-state battery cells and the cell. We have found that the temperature can be adjusted. The present invention has been made based on such findings.
  • a battery case device for operating a battery including all-solid-state battery cells, including a battery case having a storage space capable of storing a battery, and the battery case includes: A factor that affects the output of the battery by forming an air supply port for communicating the pressure source to the storage space so that the compressed and heated gas is supplied from the pressure source to the storage space, and an exhaust port communicating with the storage space.
  • this battery case device has adjusting means, the adjusting means can change the factors that affect the output of the battery so that the battery functions.
  • the electrode restraining force of the all-solid-state battery cells increases, so that a stable output can be obtained from the battery.
  • the temperature of the all-solid-state battery cells can be raised.
  • the compressed and heated gas is continuously or intermittently supplied to the storage space through the air supply port, so that the internal temperature of the storage space can be kept high. Further, since the gas is discharged from the exhaust port while the gas is supplied to the storage space, it is possible to suppress excessive stress from occurring in the battery case.
  • the supply amount of the compressed and heated gas that flows into the storage space through the air supply port is adjusted, and the discharge amount from the discharge port is adjusted so that the pressure of the storage space is maintained at a predetermined pressure.
  • the output required for actual use of the battery can be adjusted to be stable.
  • This battery case device is provided with, as an adjusting means, an adjusting valve capable of adjusting the amount of gas discharged from the exhaust port so that the pressure of the storage space is maintained at a predetermined pressure, and the factors affecting the output are controlled.
  • a control unit for operating the adjusting valve may be further provided.
  • a drive unit capable of driving the pressure source is provided so as to adjust the supply amount of the gas introduced from the pressure source to the storage space through the air supply port, and the factors affecting the output are controlled.
  • You may further provide the control part which operates a drive part.
  • the control unit operates the adjusting valve or the drive unit so as to control the factors that affect the output of the battery, so that a stable output can be obtained from the battery.
  • Factors that affect the output of the battery include, for example, the electrode restraining force and the cell temperature.
  • the control unit may operate the adjustment valve so that the electrode restraining force is controlled and the cell temperature is controlled within the temperature range in which the battery functions, as the control of the factor affecting the output. Further, the control unit may operate the drive unit such that the electrode restraining force is controlled and the cell temperature is controlled within a temperature range in which the battery functions, as a control of a factor affecting the output.
  • the control unit may perform fail-safe control to stop the function of the battery by adjusting a factor that affects the output by the adjusting unit when an abnormality occurs in the battery. As a result, the function of the battery can be stopped when an abnormality occurs in the battery.
  • control unit may perform, as fail-safe control, decompression control in which the opening degree of the adjustment valve is operated in the increasing direction so that the internal pressure of the storage space decreases. By decompressing the storage space to atmospheric pressure, the electrode restraining force is weakened and the battery can stop functioning.
  • the all-solid-state battery cell has a glass solid electrolyte, and as an adjusting means, a drive unit capable of driving the pressure source is provided so as to adjust the supply amount of gas introduced from the pressure source to the storage space through the air supply port Therefore, the control unit may perform, as the fail-safe control, pressurization and heating control for operating the drive unit so that the cell temperature exceeds the crystallization temperature of the glass solid electrolyte.
  • the cell temperature exceeds the crystallization temperature when an abnormality occurs in the battery, so that the ionic transport of the glass solid electrolyte is closed by the crystallization of the glass solid electrolyte.
  • the battery is chemically immobilized, so that the battery can stop functioning when an abnormality occurs.
  • the battery case may be installed so that the exhaust port is located at the bottom of the storage space in the direction of gravity.
  • the exhaust port is located at the bottom of the storage space in the gravity direction. Therefore, even if water vapor contained in the gas supplied into the storage space is condensed to generate water droplets, the water droplets can be discharged from the exhaust port. As a result, it is possible to suppress contact of water drops with the battery pack.
  • a power supply device includes a battery including all-solid-state battery cells, and a battery case having a storage space capable of storing the battery, and in the battery case, compressed and heated gas is supplied from a pressure source.
  • An air supply port for communicating the pressure source to the storage space so as to be supplied to the storage space, and an exhaust port communicating with the storage space are formed, and as a factor affecting the output of the battery through the air supply port or the exhaust port. It has an adjusting means capable of adjusting a factor affecting the output.
  • the factor that affects the output as the factor that affects the output of the battery can be changed by the adjusting means so that the battery functions, so that a power source with stable output characteristics can be obtained. Be done.
  • the factor that affects the output of the battery can be changed by the adjusting means so that the battery functions, so that the output required in actual use of the battery can be adjusted to be stable.
  • FIG. 1 is a schematic configuration diagram of a power supply device according to the first embodiment.
  • FIG. 2 is a schematic cross-sectional view of the assembled battery.
  • FIG. 3 is a graph showing the relationship between the absolute pressure of an all-solid-state battery and the electrode restraining force.
  • FIG. 4 is a graph showing the relationship between the absolute pressure and the temperature of the all-solid-state battery.
  • FIG. 5 is a graph showing the relationship between the temperature and the ionic conductivity of the all-solid-state battery.
  • FIG. 6 is a graph schematically showing an example of a temporal change in the internal temperature of the battery case from the start of the operation of the power supply device to the steady state.
  • FIG. 7 is a schematic configuration diagram of the power supply device according to the second embodiment.
  • FIG. 8 is a diagram for explaining a control mode of the power supply device according to the third embodiment.
  • FIG. 9 is a diagram illustrating a configuration for performing pressure reduction control.
  • FIG. 10 is a graph showing the relationship between cell temperature and ionic conductivity of an all-solid-state battery.
  • FIG. 11 is a schematic configuration diagram of the power supply device according to the fourth embodiment.
  • FIG. 12 is a schematic configuration diagram of the power supply device according to the fifth embodiment.
  • the all-solid-state battery has the characteristic that the output changes according to the cell electrode binding force, the cell temperature, etc. Electrode binding force and cell temperature are examples of factors that influence the output. Therefore, the output characteristics of the battery can be adjusted by adjusting the electrode restraining force and/or the temperature of the all-solid-state battery.
  • An all-solid-state battery requires a higher electrode restraining force than a conventional battery having a liquid electrolyte and is required to maintain a cell temperature higher than that of a conventional battery.
  • the electrode restraining force applied to the cell case covering the all-solid-state battery cell is determined by the difference between the internal pressure in the battery case and the internal pressure in the cell case.
  • the pressure inside the cell case can be adjusted when assembling the battery, but the specific internal pressure varies depending on the type of cells to be stored in the cell case.
  • the cell case may be a laminated, square, or cylindrical cell case. If the cell is manufactured without adjusting the pressure under the atmospheric pressure until the cell is housed and sealed in the cell case, the internal pressure of the cell case is defined as 1 atmosphere. Then, when the compressed and heated gas is continuously supplied into the battery case while the internal pressure in the battery case is adjusted to be high, the internal temperature in the battery case also rises and the temperature of the cell rises. To be done. That is, if the compressed and heated gas is circulated in the battery case, the electrode restraining force of the battery and the cell temperature can be adjusted. Thereby, the output characteristics of the all-solid-state battery can be adjusted.
  • the battery case device and the power supply device according to the present embodiment can be used as, for example, a secondary battery device mounted in a vehicle such as an automobile, a power supply device that operates an electric machine such as a motor, and the like.
  • a secondary battery device mounted in a vehicle such as an automobile
  • a power supply device that operates an electric machine such as a motor
  • the same or corresponding elements are designated by the same reference numerals, and duplicated description will be omitted.
  • a power supply device 1 As shown in FIG. 1, a power supply device 1 according to the present embodiment includes an assembled battery 3 in which a plurality of all-solid-state battery cells (hereinafter, referred to as battery cells) 2 are combined, and a battery case 4 accommodating the assembled battery 3. And The assembled battery 3 corresponds to an example of a battery. A pressure source 5 and a regulating valve 6 are connected to the power supply device 1.
  • a device obtained by removing the assembled battery 3 from the power supply device 1 is also referred to as a battery case device.
  • the assembled battery 3 functions as one battery by connecting a plurality of battery cells 2 in series or in parallel with each other.
  • a positive electrode terminal (plus terminal) 15 and a negative electrode terminal (minus terminal) 16 for outputting electric power from the assembled battery 3 are connected to the assembled battery 3.
  • the battery cell 2 includes a positive electrode 12 and a negative electrode 13 that are arranged to face each other, and a solid electrolyte 14 that is arranged between the positive electrode 12 and the negative electrode 13.
  • the battery cell 2 is hermetically sealed while being housed in the cell case 2a.
  • the battery cell 2 may be housed in the cell case 2a in a state where the pressure is reduced to a negative pressure.
  • the electrolyte 14 carries out ion transport between the positive electrode 12 and the negative electrode 13.
  • the electrolyte 14 transports ions from the positive electrode 12 side to the negative electrode 13 side during discharging, and transports ions from the negative electrode 13 side to the positive electrode 12 side during charging.
  • Examples of the electrolyte 14 include sulfide-based electrolytes such as Li 10 Ge 0.25 P 2 S 12 and Li 6 PS 5 Cl, Li 3 PS 4 , 70Li 2 S.30P 2 S 5 , Li 7 P 3 S 11 and the like. Glass solid electrolytes such as
  • the battery case 4 has a storage space A for storing the assembled battery 3. That is, the storage space A is an internal space of the battery case 4 that can store the assembled battery 3.
  • the shape of the storage space A is not particularly limited and may be any shape as long as the assembled battery 3 can be stored.
  • An air supply port 18 and an exhaust port 19 are formed in the battery case 4.
  • the air supply port 18 allows the pressure source 5 to communicate with the storage space A.
  • the exhaust port 19 allows the adjustment valve 6 provided outside the battery case 4 to communicate with the storage space A.
  • the storage space A is not a closed space, but a space having a ventilation means with the outside through the air supply port 18 and the exhaust port 19.
  • the pressure source 5 compresses and heats the gas and supplies the compressed and heated gas to the battery case 4.
  • the pressure source 5 is basically operating while the power supply device 1 is operating, but may be stopped when heating of the battery cells 2 is not necessary.
  • a check valve (not shown) that blocks the flow of gas from the storage space A toward the pressure source 5 when the operation of the pressure source 5 is stopped is provided, for example, between the pressure source 5 and the air supply port 18. It may be provided.
  • the pressure source 5 for example, a fluid machine such as a compressor or a pump is used.
  • the pressure source 5 is connected to an air supply duct 20 that communicates with the air supply port 18. Then, the pressure source 5 pressure-feeds the gas from the air supply port 18 to the storage space A via the air supply duct 20.
  • the gas pressure-fed to the storage space A by the pressure source 5 may be air in the atmosphere or may be another gas.
  • the pressure source 5 need not be dedicated to the power supply device 1.
  • a vehicle-mounted pressure device such as a fan or a compressor mounted on the vehicle may be used as the pressure source 5.
  • the path from the pressure source 5 to the battery case 4 and the system including the battery case 4 may be insulated from the outside of the system.
  • the air supply duct 20 with a heat insulating material and using a disconnecting material as the exterior or interior of the battery case 4, or using a heat insulating material as the material of the battery case 4, the heat insulation of the system including the battery case 4 can be achieved. It is possible to secure the sex.
  • the adjusting valve 6 is a device that can adjust the amount of gas discharged from the exhaust port 19.
  • the adjustment valve 6 is a valve whose opening can be changed from a fully closed state to a fully opened state, and for example, a valve that can be used as a pressure regulator such as a regulator or a pressure reducing valve can be used.
  • the adjusting valve 6 is connected to an exhaust duct 21 that communicates with the exhaust port 19.
  • the adjusting valve 6 adjusts the discharge amount of gas so that the pressure in the storage space A is maintained at a predetermined pressure. As a result, the amount of pressurized and compressed gas flowing through the storage space A can be adjusted.
  • the gas discharged from the adjusting valve 6 is released into the atmosphere.
  • the gas compressed and heated by the pressure source 5 is pressure-fed to the storage space A from the air supply port 18, and the discharge amount of the gas is adjusted by the adjusting valve 6, so that the internal pressure of the storage space A is maintained at a high pressure state. it can.
  • the electrode restraining force of the battery cell 2 also increases in proportion to the internal pressure of the storage space A.
  • the horizontal axis represents the absolute pressure (hPa) of the storage space A
  • the vertical axis represents the electrode restraining force (kgf/cm 2 ) of the battery cell 2.
  • the temperature of the gas increases due to the pressure source 5 compressing the gas.
  • the horizontal axis indicates the absolute pressure (hPa) of the storage space A
  • the vertical axis indicates the internal temperature (° C.) of the storage space A.
  • the cell temperature which is one of the factors that influence the output of the assembled battery 3, affects the ionic conductivity of the electrolyte 14.
  • the ionic conductivity affects the output of the battery pack 3.
  • the ionic conductivity of the electrolyte 14 increases as the cell temperature increases and decreases as the cell temperature decreases.
  • the gradient of the ionic conductivity with respect to the cell temperature tends to change depending on the material of the electrolyte 14 and the like.
  • the tendency that the ionic conductivity becomes higher as the cell temperature becomes higher does not change depending on the material of the electrolyte 14 and the like.
  • the range of the electrode restraining force and the range of the cell temperature at which the assembled battery 3 functions varies depending on the material used as the electrolyte 14. For example, when a sulfide-based glass solid electrolyte is used as the electrolyte 14, the internal pressure of the storage space A required to obtain the electrode restraining force for the assembled battery 3 to function is 1 atm to 5 atm.
  • the range of the internal temperature of the storage space A required to obtain the cell temperature at which 3 operates is about ⁇ 20° C. to 170° C.
  • the functioning of the assembled battery 3 means that the assembled battery 3 can obtain an output that can be used practically, and does not include the case where the assembled battery 3 can obtain a low output that cannot be used practically.
  • the low output that cannot be used practically means, for example, an output less than the desired output required in actual use.
  • At least one of the regulating valve 6 and the pressure source 5 is operated so that the internal pressure of the storage space A is maintained within the above range and the internal temperature of the storage space A is maintained within the above range. 3 works. On the other hand, when at least one of the internal pressure and the internal temperature of the storage space A is outside the above ranges, the assembled battery 3 stops functioning.
  • the battery case 4 may have predetermined pressure resistance and heat resistance. For example, when the storage space A at 25° C. is adjusted within the range of 1 atm to 5 atm, the battery case 4 may have a pressure resistance capable of withstanding 8 atm with a margin. In addition, for example, when the storage space A is adjusted within the range of 1 to 6 atmospheres, the internal temperature of the storage space A is 25 to 225° C., and therefore the battery case 4 has a sufficient heat resistance to withstand 250° C. You may have. Moreover, since the heat resistant temperature of the assembled battery 3 changes depending on the electrodes used, the battery case 4 may have a predetermined heat resistance.
  • the assembled battery 3 is allowed to function at 150° C. or lower, and the battery case 4 has a margin and is heat resistant to 200° C. or higher. May have.
  • the material of such a battery case 4 include metal materials such as iron, stainless steel, aluminum and copper, heat resistant resins such as fluororesin, silicone resin and polyamide, and thermosetting resins such as polyimide, allyl resin and furan resin. Resin is used.
  • the battery case 4 may be installed so that the exhaust port 19 is located at the lowermost portion of the storage space A in the gravity direction.
  • a drain port for discharging water droplets from the storage space A may be separately provided in the battery case 4.
  • a desiccant or a drying device for drying the gas is attached to the pressure source 5, the upstream side of the pressure source 5, or between the pressure source 5 and the battery case 4. Good. If the power supply device 1 is used in an environment where heat pump heating is used, air that has passed through an outdoor unit (evaporator) that dehumidifies and drys air can also be used.
  • the fixture 23 includes, for example, a pair of plates 24 and 25 sandwiching the assembled battery 3 and a fixing member 26.
  • a fixing member 26 for example, a spring, a screw, or a belt is used.
  • the fixture 23 is not limited to the above mechanism and configuration.
  • FIG. 6 schematically shows an example of a temporal change in the internal temperature in the battery case 4 from the start of the operation of the power supply device 1 to the steady state in which the assembled battery 3 functions.
  • the internal temperature of the storage space A gradually rises with the passage of time.
  • the internal temperature reaches within the temperature range in which the battery pack 3 operates.
  • the regulating valve 6 is operated so that the electrode restraining force and the cell temperature are controlled within the range where the battery pack 3 functions.
  • the target value of the internal temperature is set according to the output required in actual use, and the opening degree of the regulating valve 6 is operated in the increasing direction or the decreasing direction so as to converge to the target value. As a result, the output characteristics of the assembled battery 3 can be stabilized.
  • the gas heated and compressed by the pressure source 5 is supplied to the storage space A of the battery case 4 through the air supply port 18, while the amount of gas discharged from the exhaust port 19 is adjusted by the control valve. Adjustable with 6.
  • the internal temperature of the storage space A can be maintained at a temperature necessary for obtaining the cell temperature at which the assembled battery 3 functions, and the internal pressure of the storage space A can be obtained at the electrode binding force at which the assembled battery 3 functions. The required pressure can be maintained.
  • the gas in the storage space A can be discharged from the exhaust port 19. Therefore, the load on the battery case 4 is suppressed.
  • the exhaust port 19 is located at the bottom of the storage space A in the gravity direction. In this case, even if the gas condenses in the storage space A to generate water drops, the water drops can be discharged from the exhaust port 19. This can prevent water droplets from accumulating inside the battery case 4 and contacting the battery pack 3.
  • the second embodiment differs from the first embodiment in that the power supply device includes a pressure source, a regulating valve, and a control unit, but is basically the same as the first embodiment. Therefore, hereinafter, only matters different from the first embodiment will be described, and explanations of matters similar to the first embodiment will be omitted.
  • the power supply device 31 includes an assembled battery 3, a battery case 4, a pressure source 5, a regulating valve 6, and a controller 32. Further, the power supply device 31 is provided with a drive unit 42 capable of driving the pressure source so that the amount of gas supplied from the pressure source 5 to the storage space A through the air supply port 18 can be adjusted.
  • the control unit 32 is an electronic control unit having a CPU (Central Processing Unit), a sensor input unit, a motor control output unit, and the like.
  • the controller 32 may be composed of a plurality of electronic control units.
  • the control unit 32 controls at least one of the adjusting valve 6 and the driving unit 42 so that a factor that affects the output of the assembled battery 3 is controlled.
  • the control unit 32 controls the regulating valve so that the electrode restraining force of the battery pack 3 is controlled and the cell temperature is controlled within a temperature range in which the battery pack 3 functions. Operate 6.
  • control unit 32 controls the cell binding temperature so that the electrode restraining force of the battery pack 3 is controlled and the temperature range in which the battery pack 3 functions is controlled.
  • the drive unit 42 is controlled. Only one of these controls may be performed by the control unit 32, but these controls may be performed simultaneously by the control unit 32. When these controls are performed simultaneously, the adjusting valve 6 and the drive unit 42 correspond to an example of adjusting means.
  • the internal temperature of the storage space A can be acquired from the temperature sensor 34, for example. Further, as shown in FIG. 8, when the temperature sensor 35 is arranged in the exhaust duct 21, the internal temperature of the storage space A can be acquired from the temperature sensor 35.
  • the control unit 32 may directly acquire the opening degree, which is an example of the operation amount of the adjustment valve 6, by an opening degree sensor or the like, but acquires it based on a control command value for the adjustment valve 6 stored in the control unit 32. You can also The electrode restraining force, which is an example of a factor affecting the output of the assembled battery 3, correlates with the internal pressure of the storage space A.
  • the cell temperature which is another example of the factor affecting the output of the assembled battery 3, correlates with the internal temperature of the storage space A.
  • the electrode restraining force and the cell temperature are controlled, the internal pressure and the internal temperature are controlled as physical quantities correlated with these, but the invention is not limited to this.
  • the electrode temperature and the cell temperature may be controlled by directly measuring the cell temperature.
  • the correspondence relationship between the electrode restraining force of the battery pack 3 and the operation amount of the adjusting valve 6, the correspondence relationship between the cell temperature and the operation amount of the adjusting valve 6, the assembled battery The correspondence between the electrode restraining force of No. 3 and the output of the drive unit 42 and the correspondence between the cell temperature and the output of the drive unit 42 may be obtained in advance and stored in the control unit 32.
  • the control unit 32 reads out various correspondence relationships stored in advance in a timely manner, and specifies the operation amount of the adjusting valve 6 or the output of the driving unit 42 corresponding to the target electrode restraining force and the cell temperature, respectively. Good.
  • control unit 32 may operate the regulating valve 6 and the drive unit 42 so as to operate with the specified operation amount and output.
  • the ambient environment such as the atmospheric temperature and the atmospheric pressure which influences the control accuracy may be taken into consideration. As a result, the difference between the content specified by the various correspondences and the actual situation is reduced, so that the control accuracy is improved.
  • the battery monitoring device 33 is a device that detects the output of the assembled battery 3 and monitors the charge/discharge performance of the assembled battery 3.
  • the control unit 32 may use the information on the charge/discharge performance acquired by the battery monitoring device 33 to calibrate the various correspondence relationships described above.
  • the control unit 32 performs fail-safe control when an abnormality regarding the battery pack 3 occurs.
  • the abnormality relating to the assembled battery 3 include abnormal temperature rise of the assembled battery 3, abnormal output rise of the assembled battery 3, short circuit of output, gas generation and leakage due to damage of the assembled battery 3.
  • the temperature abnormality of the battery pack 3 can be detected by, for example, the temperature sensor 34 (see FIG. 8) arranged inside the storage space A.
  • Generation and leakage of gas due to breakage of the assembled battery 3 can be detected by, for example, a gas sensor (not shown) arranged in the exhaust duct 21.
  • the fail-safe control is a control for stopping the function of the battery pack 3 when an abnormality occurs in the battery pack 3. That is, the fail-safe control is control for stopping the function of the assembled battery 3 by adjusting factors that affect the output by the adjustment valve 6, the drive unit 42, and the like when an abnormality occurs in the assembled battery 3. As a result, it is possible to prevent the electric current from concentrating on the abnormal portion that has occurred in a part of the assembled battery 3.
  • the control unit 32 sets at least one of the electrode restraining force and the cell temperature outside the above range when an abnormality occurs. This causes the assembled battery 3 to stop functioning.
  • control unit 32 performs, as fail-safe control, pressure reduction control that operates the opening degree of the adjustment valve 6 in an increasing direction so that the internal pressure of the storage space A decreases.
  • pressure reduction control By setting the electrode restraining force of the battery pack 3 to be less than the lower limit value of the above range by this pressure reduction control, the battery pack 3 can stop functioning.
  • the gas supply by the pressure source 5 may be stopped or reduced at the same time when the opening degree of the adjusting valve 6 is operated.
  • control unit 32 may reduce the internal pressure of the battery case 4 to atmospheric pressure by performing pressure reduction control.
  • a negative pressure path 49 connected to the negative pressure source 47 is connected to the air supply duct 20 as shown in FIG.
  • a three-way valve 48 may be provided at the connecting portion.
  • the three-way valve 48 closes the negative pressure path 49 while opening the air supply duct 20, and opens the negative pressure source 47 and the storage space A while blocking the supply of gas from the pressure source 5.
  • the state b can be switched. Therefore, the three-way valve 48 corresponds to an example of switching means.
  • the control unit 32 switches the three-way valve 48 from the state a to the state b to reduce the internal pressure of the storage space A to a negative pressure, and the internal pressure of the cell case 2a can be made higher than the internal pressure of the storage space A. Thereby, the assembled battery 3 can be immobilized. It is also possible to provide a pressure reducing device such as a vacuum pump as an example of a negative pressure source, and activate the pressure reducing device in the event of an abnormality to similarly immobilize the assembled battery 3.
  • a pressure reducing device such as a vacuum pump as an example of a negative pressure source
  • the control unit 32 changes the cell temperature to a temperature higher than the crystallization temperature of the glass solid electrolyte as a chemical fail-safe control.
  • the ionic conductivity of the glass solid electrolyte increases as the temperature rises.
  • the temperature exceeds a predetermined temperature (crystallization temperature) the ionic conductivity of the glass solid electrolyte sharply decreases, and the ion transport of the glass solid electrolyte is closed.
  • the temperature exceeds 170° C. the ionic conductivity sharply decreases, and when the temperature exceeds 200° C., the ion transport is closed.
  • the control unit 32 changes the cell temperature to the internal temperature so as to exceed the crystallization temperature.
  • the control unit 32 performs pressurization and heating control that operates the drive unit 42 so that the cell temperature becomes a temperature exceeding the crystallization temperature.
  • the glass transportation of the electrolyte 14 is closed, so that the assembled battery 3 can stop functioning.
  • Li 3 PS 4 is used as the glass solid electrolyte.
  • the power supply device 41 includes an assembled battery 3, a battery case 4, a pressure source 5, a drive unit 42 that adjusts the output of the pressure source 5, and an exhaust duct with a throttle. (Pressure adjustment exhaust duct) 43.
  • the drive unit 42 is controlled by the control unit 45.
  • the exhaust duct 43 corresponds to the exhaust duct 21 of the first embodiment and communicates with the exhaust port 19 of the battery case 4.
  • the exhaust duct 43 is formed with a venturi portion 44 as an example of a throttle portion.
  • the venturi portion 44 is a portion that reduces the diameter of the flow path of the exhaust duct 43 and serves as a flow path resistance of gas flowing through the exhaust duct 43. Therefore, the venturi portion 44 makes it difficult for the gas supplied to the storage space A to escape from the exhaust duct 43, thereby suppressing a decrease in the internal pressure of the storage space A.
  • an orifice portion that narrows the flow path with an orifice plate may be provided as another example of the throttle portion.
  • the fifth embodiment is basically the same as the first and second embodiments except that the air supply/exhaust ports functioning as the air supply port and the air exhaust port are provided in the battery case.
  • the air supply/exhaust ports functioning as the air supply port and the air exhaust port are provided in the battery case.
  • only matters different from the second embodiment will be described, and explanations of matters similar to the second embodiment will be omitted.
  • the power supply device 51 includes an assembled battery 3, a battery case 52, a pressure source 5, and a regulating valve 6.
  • the battery case 52 has a storage space A for storing the assembled battery 3.
  • the battery case 52 is provided with one air supply/exhaust port 54 that also serves as an air supply port and an air exhaust port.
  • the air supply/exhaust port 54 is an opening for communicating the pressure source 5 and the regulating valve 53 with the storage space A.
  • a ventilation duct 55 is connected to the battery case 52.
  • One end side of the ventilation duct 55 is communicated with the air supply/exhaust port 54 of the battery case 52, and the other end side of the ventilation duct 55 is connected to the pressure source 5 with a first ventilation part 56 and a second ventilation part 57. It has been branched to.
  • the second ventilation portion 57 communicates with the air supply/exhaust port 54, and the second ventilation portion 57 is provided with the adjusting valve 6.
  • the second ventilation part 57 functions as an example of an exhaust passage.
  • the air compressed and heated by the pressure source 5 is supplied to the storage space A, and the air in the storage space A is guided from the air supply/exhaust port 54 to the second ventilation portion 57 of the ventilation duct 55 and passes through the adjustment valve 6. Released into the atmosphere.
  • each of the above embodiments can be partially applied to each other.
  • the control unit of the second embodiment may be applied to the fifth embodiment.
  • the fail-safe control of the third embodiment may be applied to the second embodiment.
  • the configuration of the fifth embodiment may be replaced with the configuration of each of the above-described embodiments.
  • the assembled battery 3 in which a plurality of all-solid-state battery cells 2 are combined corresponds to an example of the battery according to the present invention.
  • the all-solid-state battery cell 2 is a single battery. May be provided as an example of the battery according to the present invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Engineering & Computer Science (AREA)
  • Secondary Cells (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne un dispositif de boîtier de batterie qui permet à une batterie assemblée 3 dans laquelle une pluralité de tous les éléments de batterie à semi-conducteurs 2 sont combinés pour fonctionner. Le dispositif de boîtier de batterie comporte un boîtier de batterie 4 ayant un espace de logement A apte à loger la batterie assemblée 3. Le boîtier de batterie 4 est formé avec : une ouverture d'alimentation en gaz 18 à travers laquelle une source de pression 5 est reliée à l'espace de logement A de telle sorte qu'un gaz comprimé et chauffé est fourni depuis la source de pression 5 vers l'espace de logement A ; et une ouverture d'échappement 19 qui est en communication avec l'espace de logement A. Le dispositif de boîtier de batterie comporte également une soupape de réglage 6 apte à régler, à travers l'ouverture d'échappement 19, un facteur affectant la sortie de la batterie assemblée 3.
PCT/JP2019/034250 2018-12-05 2019-08-30 Dispositif de boîtier de batterie et dispositif d'alimentation électrique WO2020115964A1 (fr)

Applications Claiming Priority (2)

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JP2018228561A JP7222680B2 (ja) 2018-12-05 2018-12-05 電池ケース装置及び電源装置
JP2018-228561 2018-12-05

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DE102022124042A1 (de) 2022-09-20 2024-03-21 Bayerische Motoren Werke Aktiengesellschaft Elektrischer Energiespeicher mit Druckbehälter

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KR102622321B1 (ko) * 2022-01-12 2024-01-08 (주)하나기술 전고체용 이차전지 고온 가압시스템 및 방법

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JP2007087759A (ja) * 2005-09-21 2007-04-05 Nissan Motor Co Ltd ゲル電解質電池、電池ユニット、および電池用ゲル電解質層の製造方法
JP2008147010A (ja) * 2006-12-08 2008-06-26 Nissan Motor Co Ltd 電力供給装置およびその制御方法
JP2010034002A (ja) * 2008-07-31 2010-02-12 Idemitsu Kosan Co Ltd リチウム電池及びリチウム電池搭載装置
WO2010092692A1 (fr) * 2009-02-16 2010-08-19 トヨタ自動車株式会社 Système de dispositifs de stockage d'énergie, commande de moteur et corps mobile utilisant ledit système
JP2012169204A (ja) * 2011-02-16 2012-09-06 Toyota Motor Corp 電池構造体
JP2018073540A (ja) * 2016-10-26 2018-05-10 トヨタ自動車株式会社 電池構造体、電池システム及び車両
JP2019033043A (ja) * 2017-08-09 2019-02-28 三菱重工業株式会社 全固体電池モジュール

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JP2007087759A (ja) * 2005-09-21 2007-04-05 Nissan Motor Co Ltd ゲル電解質電池、電池ユニット、および電池用ゲル電解質層の製造方法
JP2008147010A (ja) * 2006-12-08 2008-06-26 Nissan Motor Co Ltd 電力供給装置およびその制御方法
JP2010034002A (ja) * 2008-07-31 2010-02-12 Idemitsu Kosan Co Ltd リチウム電池及びリチウム電池搭載装置
WO2010092692A1 (fr) * 2009-02-16 2010-08-19 トヨタ自動車株式会社 Système de dispositifs de stockage d'énergie, commande de moteur et corps mobile utilisant ledit système
JP2012169204A (ja) * 2011-02-16 2012-09-06 Toyota Motor Corp 電池構造体
JP2018073540A (ja) * 2016-10-26 2018-05-10 トヨタ自動車株式会社 電池構造体、電池システム及び車両
JP2019033043A (ja) * 2017-08-09 2019-02-28 三菱重工業株式会社 全固体電池モジュール

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DE102022124042A1 (de) 2022-09-20 2024-03-21 Bayerische Motoren Werke Aktiengesellschaft Elektrischer Energiespeicher mit Druckbehälter

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