WO2024100980A1 - Système de chauffage de batterie - Google Patents

Système de chauffage de batterie Download PDF

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Publication number
WO2024100980A1
WO2024100980A1 PCT/JP2023/032978 JP2023032978W WO2024100980A1 WO 2024100980 A1 WO2024100980 A1 WO 2024100980A1 JP 2023032978 W JP2023032978 W JP 2023032978W WO 2024100980 A1 WO2024100980 A1 WO 2024100980A1
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WO
WIPO (PCT)
Prior art keywords
battery
medium
temperature
heat generating
warm
Prior art date
Application number
PCT/JP2023/032978
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English (en)
Japanese (ja)
Inventor
衛 吉岡
伸二 河井
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愛三工業株式会社
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Filing date
Publication date
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Publication of WO2024100980A1 publication Critical patent/WO2024100980A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • 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 technology disclosed in this specification relates to a battery warm-up system configured to warm up a battery mounted on an electric vehicle or the like.
  • Patent Document 1 discloses technology relating to a battery warming device that keeps the battery at an appropriate temperature when an electric vehicle is running.
  • This device is equipped with a combustion heater that generates heat through combustion, a radiator that radiates heat generated by the motor to the outside of the vehicle, a heater core that radiates heat into the vehicle, a battery warming member that transfers heat to the battery, a battery temperature detection sensor that detects the temperature of the battery, and a control means that transfers heat from the battery warming member to the battery when the battery temperature is lower than a predetermined set temperature.
  • cooling water (hot water) heated by a combustion heater is circulated to the heater core, but when the battery is kept warm, the entire flow of hot water is bypassed to the battery. This causes a delay in the circulation of hot water to the heater core, and the heat is also recovered by keeping the battery warm, so there is a risk that the amount of heat required to heat the vehicle interior cannot be secured.
  • This disclosed technology was made in consideration of the above circumstances, and its purpose is to provide a battery warming system that ensures the amount of heat required for heating in the heat generating section and makes it possible to effectively warm up the battery without providing a separate heat generating means.
  • one aspect of the technology disclosed in this application is a battery warm-up system for warming up a battery
  • the battery warm-up system including a heat generating section that generates heat, a battery warm-up section for warming up the battery with the heat from the heat generating section, a heater core that dissipates the heat from the heat generating section for heating, and a heating circulation circuit that circulates the heat from the heat generating section between the heat generating section and the heater core by a medium
  • the battery warm-up system including a medium removal section for removing a portion of the medium from the heating circulation circuit, and a battery circulation circuit that includes a battery warm-up section and circulates the heat of the portion of the medium removed from the medium removal section to the battery warm-up section.
  • the heat of the heat generating part in the heating circulation circuit, the heat of the heat generating part is circulated between the heat generating part and the heater core by the medium, and the heat of the heat generating part is dissipated by the heater core, thereby performing heating.
  • the heat of a portion of the medium taken out from the medium extraction part in the heating circulation circuit is circulated to the battery warming part, thereby warming up the battery with the heat from the heat generating part. Therefore, a portion of the heat from the heat generating part is used for heating, and another portion of the heat from the heat generating part is used for warming up the battery.
  • the portion of the medium that is extracted is a mixed medium of the high-temperature medium after it has flowed out from the heat generating section and the low-temperature medium before it flows into the heat generating section
  • the battery circulation circuit includes a confluence adjustment means for adjusting the flow rate of each of the high-temperature medium and the low-temperature medium, and for merging the flow-adjusted high-temperature medium and low-temperature medium to mix them.
  • the portion of the medium taken out from the medium outlet section is a mixed medium of the high-temperature medium after it has flowed out from the heat generating section and the low-temperature medium before it flows into the heat generating section. Then, in the battery circulation circuit, the flow rates of the high-temperature medium and the low-temperature medium are adjusted by the confluence adjustment means, and the high-temperature medium and the low-temperature medium whose flow rates have been adjusted are made to merge in order to be mixed. Therefore, after the high-temperature medium and the low-temperature medium, which have a temperature difference, are appropriately mixed, the mixed medium flows to the battery warm-up section to warm up the battery.
  • the portion of the medium that is extracted is a mixed medium of the high-temperature medium after flowing out from the heat generating portion and the low-temperature medium after heat exchange with the battery
  • the battery circulation circuit includes a confluence adjustment means for adjusting the flow rate of each of the high-temperature medium and the low-temperature medium and merging the flow-rate-adjusted high-temperature medium and low-temperature medium to mix them.
  • the portion of the medium taken out from the medium outlet section is a mixture of the high-temperature medium after flowing out from the heat generating section and the low-temperature medium after heat exchange with the battery. Then, in the battery circulation circuit, the flow rates of the high-temperature medium and the low-temperature medium are adjusted by the merging adjustment means, and the medium is mixed by merging. Therefore, the high-temperature medium and the low-temperature medium, which have a temperature difference, are appropriately mixed, and the mixed medium flows to the battery warming section to warm up the battery.
  • the portion of the medium that is extracted is a high-temperature medium before it flows out of the heat generating portion, and that the battery circulation circuit includes a heat exchanger for battery warm-up, and that the medium circulating in the battery circulation circuit is heat-exchanged with the high-temperature medium in the heat exchanger for battery warm-up.
  • a portion of the medium taken out from the medium taking-out section is a high-temperature medium before flowing out from the heat generating section. Then, the medium circulating in the battery circulation circuit is heated by heat exchange with the high-temperature medium via the battery warm-up heat exchanger, and flows to the battery warm-up section to warm up the battery.
  • the portion of the medium that is extracted is a mixed medium of the high-temperature medium before it flows out of the heat generating section and the low-temperature medium after it flows into the heat generating section
  • the battery circulation circuit includes a confluence adjustment means for adjusting the flow rates of the high-temperature medium and the low-temperature medium, and for merging the flow-rate-adjusted high-temperature medium and the low-temperature medium to mix them.
  • the part of the medium taken out from the medium outlet section is a mixture of the high-temperature medium before it flows out from the heat generating section and the low-temperature medium after it flows into the heat generating section. That is, in the battery circulation circuit, the flow rates of the respective mediums are adjusted by the merging adjustment means, and the mediums are mixed by merging. Therefore, the high-temperature medium and the low-temperature medium, which have a temperature difference, are appropriately mixed, and the mixed medium flows to the battery warming section to warm up the battery.
  • the portion of the medium that is extracted is a medium-temperature medium that flows partway through the flow path of the heat generating section, and that the battery circulation circuit is configured to flow the medium-temperature medium to the battery warm-up section.
  • the portion of the medium that is extracted is a high-temperature medium before it flows out of the heat generating section, and that the battery circulation circuit is configured to flow the high-temperature medium to the battery warm-up section.
  • the heat generating section is configured with a multi-stage temperature control device that heats the medium flowing therein in multiple stages to control the temperature, and that the medium removal section is provided integrally with the multi-stage temperature control device.
  • the configuration (8) above has the effect of any of the configurations (1) to (7) above, and in addition, the medium removal section is integrally provided with the multi-stage temperature control device, simplifying the configuration.
  • the configuration (1) above ensures that the heat required for heating is generated by the heat generating section, while effectively warming up the battery without providing a separate heat generating means.
  • the configuration (2) above has the effect of the configuration (1) above, and in addition, the battery can be warmed up at an optimal temperature according to the required temperature.
  • the configuration (3) above has the effect of the configuration (1) above, and in addition, the battery can be warmed up at an optimal temperature according to the required temperature.
  • the configuration (4) above has the effect of the configuration (1) above, and in addition, the battery circulation circuit and the heating circulation circuit can be thermally connected via a battery warm-up heat exchanger, improving the freedom of arrangement of the battery circulation circuit and the heating circulation circuit.
  • the configuration (5) above has the effect of the configuration (1) above, and in addition, the battery can be warmed up at an optimal temperature according to the required temperature.
  • the configuration (6) above has the effect of the configuration (1) above, and in addition, the configuration for warming up the battery can be simplified by the amount that the temperature adjustment of the medium-temperature medium can be omitted.
  • the above configuration (7) achieves the effect of the above configuration (1), and also allows the battery to be warmed up with a simple configuration in which only the high-temperature medium flows.
  • the above configuration (8) provides the effects of any of the above configurations (1) to (7), and also reduces the number of components in the battery warm-up system, improving the ease of mounting the battery warm-up system on a vehicle, etc.
  • FIG. 1 is a schematic diagram showing a battery warm-up system in a first embodiment
  • 4 is a time chart showing the behavior of various parameters related to the control of the ECU in the first embodiment
  • FIG. 11 is a schematic diagram showing a battery warm-up system according to a second embodiment. 10 is a time chart showing the behavior of various parameters related to the control of the ECU in the second embodiment
  • FIG. 11 is a schematic diagram showing a battery warm-up system according to a third embodiment.
  • 13 is a time chart showing the behavior of various parameters related to the control of the ECU in the third embodiment
  • FIG. 1 is a schematic diagram of a battery warm-up system 1 of this embodiment.
  • the battery warm-up system 1 mounted on an electric vehicle generally includes a battery circulation circuit 2 provided for a battery 11, a heating circulation circuit 3 including a heat generating unit 12, a heater core 13, and a first pump 14, a multi-stage temperature regulator 4 including a first flow control valve 15 and a second flow control valve 16, and an electronic control unit (ECU) 5 for controlling the flow of a medium in the system 1.
  • ECU electronice control unit
  • the battery circulation circuit 2 is a circuit that circulates a temperature-adjusted medium to warm up the battery 11, and includes the battery 11, a battery warming section 17, a first flow control valve 15, and a second flow control valve 16.
  • the battery warming section 17 is provided in the battery 11, and warms up the battery 11 with a medium heated by the heat generating section 12.
  • the first flow control valve 15 and the second flow control valve 16 are arranged in parallel with each other.
  • the battery warming section 17 is composed of a heat exchanger through which the medium heated by the heat generating section 12 flows.
  • the battery warming section 17 is connected to a battery upstream side pipe 18 arranged upstream of the battery 11 and a battery downstream side pipe 19 arranged downstream of the battery 11.
  • the second flow control valve 16 is arranged on the battery upstream side pipe 18, and the first flow control valve 15 is arranged on a battery junction pipe 20 that joins the battery upstream side pipe 18 downstream of the second flow control valve 16.
  • a temperature sensor 22 for detecting the temperature of the medium is provided immediately after a junction 21 of the battery upstream pipe 18 and the battery junction pipe 20 .
  • the solid arrows indicate that the temperature of the medium flowing through the circuit 2 is high (high-temperature medium), and the dashed arrows indicate that the temperature of the medium flowing through the circuit 2 is low (low-temperature medium) (the same applies to FIG. 3 described later).
  • the required temperature of the medium flowing into the battery warm-up unit 17 it is desirable for the required temperature of the medium flowing into the battery warm-up unit 17 to be "25°C" (the same applies to other embodiments).
  • the heat generating part 12 that generates heat is, for example, an electrically operated electric (PTC) heater.
  • the heater core 13 is, for example, a heat exchanger that radiates heat of a medium heated by the heat generating part 12 to a vehicle interior (not shown) for heating the vehicle interior.
  • the first pump 14 is electrically operated.
  • the heat generating part 12 is connected to a heating upstream pipe 23 arranged upstream of the heat generating part 12 and a heating downstream pipe 24 arranged downstream of the heat generating part 12.
  • the medium heated by the heat generating part 12 flows to the heater core 13 through the heating downstream pipe 24.
  • the medium that has been heat exchanged by the heater core 13 flows to the heat generating part 12 through the heating upstream pipe 23 and is heated again by the heat generating part 12.
  • the first pump 14 is arranged on the heating upstream pipe 23 and pumps the medium toward the heat generating part 12.
  • the filled arrows indicate that the temperature of the medium flowing through the circuit 3 is high (high temperature medium), and the open arrows indicate that the temperature of the medium flowing through the circuit 3 is low (low temperature medium).
  • the arrows on the left and right of the heater core 13 indicate the flow of air, with the open arrows indicating that the air temperature is low and the dotted arrows indicating that the air temperature is slightly high. In other words, they indicate that the temperature of the air that has passed through the heater core 13 has increased.
  • FIG. 3 which will be described later.
  • the upstream end of the battery junction pipe 20 is connected to the heating upstream pipe 23 immediately before the heat generating unit 12.
  • the first flow control valve 15 When the first flow control valve 15 is opened, a part of the medium flowing from the heating upstream pipe 23 to the heat generating unit 12 flows to the battery junction pipe 20.
  • the upstream end of the battery upstream pipe 18 is connected to the heating downstream pipe 24 immediately after the heat generating unit 12.
  • the second flow control valve 16 When the second flow control valve 16 is opened, a part of the medium flowing from the heat generating unit 12 to the heating downstream pipe 24 flows to the battery upstream pipe 18 and merges with the medium flowing through the battery junction pipe 20 at the merger portion 21.
  • connection portion between the upstream end of the battery junction pipe 20 and the heating upstream pipe 23 serves as a low-temperature medium extraction portion 25 that extracts a low-temperature medium as a part of the medium from the heating circulation circuit 3.
  • connection portion between the upstream end of the battery upstream pipe 18 and the heating downstream pipe 24 serves as a high-temperature medium extraction portion 26 that extracts a high-temperature medium as a part of the medium from the heating circulation circuit 3.
  • the downstream end of the battery downstream piping 19 is connected to the heating upstream piping 23 between the heater core 13 and the first pump 14.
  • the medium that flows from the battery warm-up unit 17 to the battery downstream piping 19 flows to the heating upstream piping 23 and merges with the medium flowing through the heating upstream piping 23.
  • the battery 11 is warmed up by the heat of a mixed medium consisting of the low-temperature medium, which is a portion of the medium taken out from the low-temperature medium extraction unit 25 to the battery junction piping 20, and the high-temperature medium, which is a portion of the medium taken out from the high-temperature medium extraction unit 26 to the battery upstream piping 18.
  • the part of the medium described above is a mixed medium of the high-temperature medium after flowing out from the heat generating section 12 and the low-temperature medium before flowing into the heat generating section 12.
  • the battery circulation circuit 2 includes first and second flow control valves 15, 16 that adjust the flow rates of the high-temperature medium and the low-temperature medium, respectively, and a junction section 21 that joins the flow-rate-adjusted high-temperature medium and the low-temperature medium to mix them.
  • the high-temperature medium that flows from the high-temperature medium extraction section 26 into the battery upstream piping 18 after flowing out from the heat generating section 12 and the low-temperature medium that flows from the low-temperature medium extraction section 25 into the battery junction piping 20 before flowing into the heat generating section 12 are adjusted in flow rate by the respective flow control valves 15, 16 and mixed to form a mixed medium, and the temperature of the medium is adjusted.
  • the first and second flow control valves 15, 16 and the junction section 21 constitute an example of the "junction adjustment means" of this disclosed technology.
  • the multistage temperature adjustment device 4 is composed of a first flow control valve 15, a second flow control valve 16, a heating section 12, and respective pipes 18, 20, 23, and 24 connected thereto.
  • the ECU 5 controls the battery warm-up system 1. That is, the above-mentioned temperature sensor 22, the first flow control valve 15, the second flow control valve 16, the heat generating unit 12, and the first pump 14 are each connected to the ECU 5.
  • the ECU 5 controls the flow control valves 15, 16, the heat generating unit 12, and the first pump 14 based on the detection value of the temperature sensor 22, etc.
  • the ECU 5 controls the flow rates of the low-temperature medium and the high-temperature medium by the flow control valves 15, 16 so that the mixed medium of the low-temperature medium flowing into the heat generating portion 12 and the high-temperature medium flowing out from the heat generating portion 12 reaches the temperature (25°C) required to warm up the battery 11.
  • the high-temperature medium flowing out from the heat generating portion 12 is rapidly heated, so that the battery 11 can be warmed up quickly by flowing it to the battery warm-up portion 17.
  • the temperature of the low-temperature medium flowing into the heat generating portion 12 exceeds "25°C"
  • the temperature of the mixed medium flowing into the battery warm-up portion 17 will no longer be suitable for warming up the battery 11. Therefore, in this embodiment, it is desirable to complete the warm-up of the battery 11 before the temperature of the low-temperature medium flowing into the heat generating portion 12 exceeds "25°C".
  • Figure 2 shows the behavior of various parameters related to the control of the ECU 5 in a time chart.
  • (A) shows the ON/OFF of the heat generating unit 12 and the first pump 14,
  • (B) shows the opening of the first flow control valve 15,
  • (C) shows the opening of the second flow control valve 16.
  • the solid line shows the temperature of the medium at the outlet of the heat generating unit 12 (heat generating unit outlet temperature) THO
  • the fine dashed line shows the temperature of the medium at the inlet of the battery 11 (battery inlet temperature) TBI
  • the two-dot chain line shows the temperature of the battery 11 (battery temperature) TB
  • the coarse dashed line shows the temperature of the medium at the inlet of the heat generating unit 12 (heat generating unit inlet temperature) THI.
  • the medium heated in the heat generating unit 12 is circulated between the heat generating unit 12 and the heater core 13, and the heat of the medium heated in the heat generating unit 12 is dissipated by the heater core 13, thereby performing heating.
  • a part of the medium taken out from the high-temperature medium take-out unit 26 in the heating circulation circuit 3 is circulated to the battery warm-up unit 17, thereby warming up the battery 11 with the heat of the part of the medium heated in the heat generating unit 12.
  • the heat generated by the heat generating unit 12 is used for heating, and another part of the heat is used for warming up the battery 11. Therefore, the heat required for heating can be secured in the heat generating unit 12, and the battery 11 can be effectively warmed up without providing a separate heat generating means.
  • some of the media taken out from both media outlets 25, 26 is a mixture of the low-temperature media before flowing into the heat generating section 12 and the high-temperature media after flowing out from the heat generating section 12.
  • the flow rates of the low-temperature media and the high-temperature media are adjusted by the respective flow control valves 15, 16, and are mixed by merging at the junction 21. Therefore, the high-temperature media and the low-temperature media, which have a temperature difference, are appropriately mixed, and the mixed media flows to the battery warm-up section 17 to warm up the battery 11. Therefore, the warm-up of the battery 11 can be performed at an optimal temperature according to the required temperature.
  • FIG. 3 shows a schematic diagram of the battery warm-up system 1 of this embodiment. This embodiment differs from the first embodiment in the configuration of the battery circulation circuit 2 and the multi-stage temperature control device 4.
  • the battery circulation circuit 2 is different from the first embodiment in that a temperature control valve 30 for adjusting the temperature of the medium, an electric second pump 31, and a battery bypass pipe 32 are provided instead of the first flow control valve 15, the second flow control valve 16, and the battery junction pipe 20. That is, a battery bypass pipe 32 for bypassing the medium from the battery downstream pipe 19 to the battery upstream pipe 18 is provided between the battery upstream pipe 18 and the battery downstream pipe 19.
  • the temperature control valve 30 is configured as an electric three-way valve and is disposed at the connection between the battery bypass pipe 32 and the battery upstream pipe 18.
  • the temperature control valve 30 includes a first port 30a, a second port 30b, and a third port 30c.
  • the battery upstream pipe 18 is connected to the first port 30a and the third port 30c, and the battery bypass pipe 32 is connected to the second port 30b.
  • the second pump 31 is disposed on the battery bypass pipe 32.
  • the part of the medium taken out from the heating circulation circuit 3 is a mixed medium obtained by adjusting the flow rates of the high-temperature medium flowing from the heat generating unit 12 to the heating downstream piping 24 and the low-temperature medium flowing from the battery 11 to the battery downstream piping 19 and exchanging heat with the battery 11, respectively, by the first and second pumps 14, 31 and mixing them by the temperature control valve 30.
  • the temperature control valve 30 is configured to merge the high-temperature medium flowing into the first port 30a and the low-temperature medium flowing into the second port 30b at the time of switching in order to mix them, and to adjust the flow rates of the high-temperature medium and the low-temperature medium.
  • the temperature control valve 30 corresponds to an example of the "merging adjustment means" of this disclosed technology.
  • the temperature control valve 30 gradually reduces the flow rate of the high-temperature medium flowing into the first port 30a and gradually increases the flow rate of the low-temperature medium flowing into the second port 30b, thereby changing the ratio of the high-temperature medium and the low-temperature medium in the mixed medium.
  • the multi-stage temperature adjustment device 4 is composed of a heating portion 12, a temperature adjustment valve 30, a second pump 31, and respective pipes 18, 19, 24, and 32 connected thereto.
  • the temperature control valve 30 and the second pump 31 are each connected to the ECU 5.
  • the ECU 5 controls the pumps 14, 31, the heat generating portion 12 and the temperature control valve 30 based on the detection value of the temperature sensor 22, etc.
  • the ECU 5 controls the temperature control valve 30 so that the high-temperature medium flowing out from the heat generating section 12 is mixed with the low-temperature medium flowing out from the battery 11 (battery warming section 17) of the battery circulation circuit 2 to a temperature (25°C) required for warming up the battery 11.
  • the low-temperature medium is returned from the battery circulation circuit 2 to the heating circulation circuit 3 in an amount equal to the amount of high-temperature medium that flows from the heating circulation circuit 3 to the battery circulation circuit 2.
  • Figure 4 shows the behavior of various parameters related to the control of the ECU 5 in a time chart.
  • (B) shows the ON/OFF of the second pump 31, and (C) shows the opening and closing of the temperature control valve 30.
  • the solid line shows the opening degree (heating part side opening degree) OPE of the first port 30a connected to the outlet side of the heating part 12, and the dashed line shows the opening degree (battery side opening degree) OPB of the second port 30b connected to the battery bypass pipe 32.
  • A) and (D) in Figure 4 are the same as those in Figure 2.
  • the temperature control valve 30 (C) has the heating element side opening OPE set to "fully open” and the battery side opening OPB set to “fully closed.” At this time, when the heating element 12 and first pump 14 (A) turn “ON,” the various temperatures (D) begin to increase.
  • the configuration different from the first embodiment has the following actions and effects. That is, a part of the medium taken out from the high-temperature medium take-out section 26 is a mixed medium of the high-temperature medium after flowing out from the heat generating section 12 and the low-temperature medium after heat exchange with the battery 11. Then, in the battery circulation circuit 2, the flow rates of the high-temperature medium and the low-temperature medium are adjusted by the temperature control valve 30 (confluence adjustment means) and are mixed by confluence.
  • the high-temperature medium and the low-temperature medium having a temperature difference are appropriately mixed, and the mixed medium flows to the battery warm-up section 17 to warm up the battery 11. Therefore, the warm-up of the battery 11 can be performed at an optimal temperature according to the required temperature (25°C).
  • FIG. 5 shows a schematic diagram of the battery warm-up system 1 of this embodiment. This embodiment differs from the first embodiment in the configurations of the heating circulation circuit 3, the battery circulation circuit 2, and the multi-stage temperature control device 4.
  • the heater circulation circuit 3 of this embodiment differs from the above-mentioned embodiments in the configuration of the heat generating part 12.
  • the heat generating part 12 includes a casing 40 having an inlet 40a and an outlet 40b, and the casing 40 is provided with a flow path 41 formed in a zigzag maze shape between the inlet 40a and the outlet 40b.
  • the casing 40 is provided with a plurality of electric heaters 42 arranged alternately along the zigzag flow path 41 to heat the medium flowing through the flow path 41.
  • a high-temperature medium outlet 26 for taking out the high-temperature medium heated by the heat generating part 12 is provided near the outlet 40b of the casing 40. That is, in this embodiment, the part of the medium that is taken out is the high-temperature medium immediately before it flows out of the heat generating part 12.
  • the heat exchanger 7 includes a sub-casing 43 that is provided integrally with the casing 40 of the heat generating unit 12.
  • the sub-casing 43 is provided with a high-temperature flow path 44 through which the high-temperature medium taken out from the high-temperature medium take-out part 26 flows.
  • the high-temperature flow path 44 extends from one end (the high-temperature medium take-out part 26) to the other end inside the sub-casing 43, and is folded back in a U-shape to form a part of the heat exchanger 7.
  • a bypass pipe 45 is provided at the outlet 44a of the high-temperature flow path 44 to bypass the high-temperature medium to the heating upstream pipe 23 between the heater core 13 and the first pump 14.
  • a temperature-sensitive opening and closing valve 47 is provided near the outlet 44a of the high-temperature flow path 44.
  • the on-off valve 47 is made of, for example, thermowax, and is configured to be fully closed when the temperature of the medium flowing into the battery warming section 17 becomes equal to or higher than 25° C.
  • a temperature control flow path 48 through which the medium circulating in the battery circulation circuit 2 flows is provided so as to enclose the high temperature flow path 44 in order to adjust the temperature of the battery 11.
  • the temperature control flow path 48 has an inlet 48a and an outlet 48b, and the inlet 48a is connected to the battery downstream side piping 19 extending from the battery warming section 17.
  • an electric third pump 49 is disposed on the battery downstream side piping 19 in order to pump the medium circulating in the battery circulation circuit 2.
  • the battery upstream side piping 18 extending to the battery warming section 17 is connected to the outlet 48b of the temperature control flow path 48.
  • the medium (high temperature medium) taken out from the high temperature medium take-out section 26 and flowing in the high temperature flow path 44 is heat exchanged with the medium flowing in the temperature control flow path 48 in order to adjust the temperature of the battery 11, and the medium is heated. That is, the medium circulating in the battery circulation circuit 2 is heat exchanged with the high temperature medium in the heat exchanger 7.
  • an insulating layer 52 is provided at the boundary between the casing 40 of the heat generating unit 12 and the sub-casing 43 of the heat exchanger 7.
  • the heat generating unit 12 is configured with a multistage temperature adjustment device 4 that adjusts the temperature by heating the medium flowing therein in multiple stages.
  • the multistage temperature adjustment device 4 is also configured with the heat generating unit 12 and a heat exchanger 7.
  • the heat generating unit 12 and the high temperature medium outlet unit 26 are integrally formed by a casing 40.
  • solid arrows indicate that the temperature of the medium flowing through the battery circulation circuit 2 and the heating circulation circuit 3 is high (high-temperature medium), dotted arrows indicate that the temperature of the medium flowing through the circuits 2 and 3 is slightly high (medium-temperature medium), and hollow arrows indicate that the temperature of the medium flowing through the circuits 2 and 3 is low (low-temperature medium).
  • the ECU 5 controls each electric heater 42 of the heat generating section 12 and the first and third pumps 14, 49.
  • the high-temperature medium immediately before flowing out from the heat generating section 12 is circulated to the heat exchanger 7 of the battery circulation circuit 2, and the heat exchanger 7 exchanges heat so that the medium flowing into the battery 11 (battery warming section 17) has a temperature (25° C.) required for warming up the battery 11.
  • the medium circulating in the heating circulation circuit 3 is not directly flowed into the battery circulation circuit 2.
  • Figure 6 shows the behavior of various parameters related to the control of the ECU 5 in a time chart.
  • (B) shows the ON/OFF of the third pump 49
  • (C) shows the opening and closing of the on-off valve 47 made of thermowax
  • (D) shows various temperatures, the same as in Figure 2.
  • the configuration different from the first embodiment has the following actions and effects. That is, the part of the medium taken out from the high-temperature medium outlet 26 is the high-temperature medium immediately before flowing out from the heat generating section 12. Then, the medium circulating in the battery circulation circuit 2 is heated by heat exchange with the high-temperature medium via the battery warm-up heat exchanger 7, and flows to the battery warm-up section 17 to warm up the battery 11. Therefore, the battery circulation circuit 2 and the heating circulation circuit 3 can be thermally connected via the heat exchanger 7, so that the freedom of arrangement of the battery circulation circuit 2 and the heating circulation circuit 3 can be improved.
  • the high-temperature medium extraction section 26 is integrally provided with the multi-stage temperature adjustment device 4, simplifying the configuration. This allows the number of parts in the battery warm-up system 1 to be reduced, improving the ease of mounting the battery warm-up system 1 on a vehicle, etc.
  • FIG. 7 shows a schematic diagram of the battery warm-up system 1 of this embodiment. This embodiment differs from the first and third embodiments in the configuration of the battery circulation circuit 2 and the heating circulation circuit 3.
  • the battery circulation circuit 2 of this embodiment includes a battery warming section 17 and a temperature control valve 50, and does not include the heat exchanger 7 and the third pump 49 integrated with the heat generating section 12.
  • the temperature control valve 50 has a first port 50a, a second port 50b, and a third port 50c.
  • the outlet side of the battery downstream side piping 19 is connected to the heating upstream side piping 23 between the heater core 13 and the first pump 14 in the heating circulation circuit 3. That is, in this embodiment, the part of the medium taken out is a mixed medium of the high temperature medium immediately before flowing out from the heat generating section 12 and the low temperature medium immediately after flowing into the heat generating section 12.
  • the temperature control valve 50 of this embodiment is configured to merge the high temperature medium and the low temperature medium to mix them, and to adjust the flow rate of each of the high temperature medium and the low temperature medium, which corresponds to an example of the "merging adjustment means" of this disclosed technology.
  • a part of the configuration of the heat generating part 12 is different from that of the third embodiment. That is, a low-temperature medium extraction part 25 for extracting the low-temperature medium before being heated by the heat generating part 12 is provided in the casing 40 of the heat generating part 12 near the inlet 40a. In addition, a high-temperature medium extraction part 26 for extracting the high-temperature medium heated by the heat generating part 12 is provided in the casing 40 of the heat generating part 12 near the outlet 40b.
  • One end of the battery upstream side piping 18 connected to the first port 50a and the third port 50c of the temperature control valve 50 is connected to the low-temperature medium extraction part 25.
  • a high-temperature piping 51 connected to the second port 50b of the temperature control valve 50 is connected to the high-temperature medium extraction part 26.
  • a temperature sensor 22 is provided in the battery upstream side piping 18 between the temperature control valve 50 and the battery warm-up part 17.
  • the multistage temperature adjustment device 4 is composed of a heat generating unit 12 and a temperature adjustment valve 50.
  • the heat generating unit 12, the low temperature medium outlet unit 25, and the high temperature medium outlet unit 26 are integrally formed.
  • the ECU 5 is configured to control the electric heater 42 of the heat generating portion 12 , the first pump 14 , and the temperature control valve 50 based on the detected value of the temperature sensor 22 , etc.
  • the ECU 5 controls the temperature control valve 50 so that the high-temperature medium immediately before it flows out of the heat generating portion 12 and the low-temperature medium immediately after it flows into the heat generating portion 12 are mixed to a temperature (25°C) required to warm up the battery 11.
  • Figure 8 shows the behavior of various parameters related to the control of the ECU 5 in a time chart.
  • (B) shows the opening and closing of the temperature control valve 50.
  • the solid line shows the opening (high temperature side opening) OPH of the second port 50b connected to the high temperature medium extraction section 26 of the heat generating section 12, and the dashed line shows the opening (low temperature side opening) OPL of the first port 50a connected to the low temperature medium extraction section 25.
  • (A) and (D) in Figure 8 are the same as those in Figure 2.
  • the temperature control valve 50 (B) has the high temperature side opening OPH fully open and the low temperature side opening OPL fully closed. At this time, when the heat generating unit 12 and the first pump 14 (A) turn "ON", the various temperatures (D) start to increase.
  • the configuration different from the first and third embodiments has the following actions and effects. That is, a part of the medium taken out from the heating circulation circuit 3 is a mixed medium of a high-temperature medium immediately before flowing out from the heat generating unit 12 and a low-temperature medium immediately after flowing into the heat generating unit 12. That is, in the battery circulation circuit 2, the flow rates of the respective mediums are adjusted by the temperature control valve 50 (confluence adjustment means) and are mixed by confluence. Therefore, the high-temperature medium and the low-temperature medium having a temperature difference are appropriately mixed, and the mixed medium flows to the battery warm-up unit 17 to warm up the battery 11. Therefore, the warm-up of the battery 11 can be performed at an optimal temperature (25° C.) according to the required temperature of the battery 11.
  • FIG. 9 shows a schematic diagram of the battery warm-up system 1 of this embodiment. This embodiment differs from the fourth embodiment mainly in the configuration of the battery circulation circuit 2.
  • the battery circulation circuit 2 of this embodiment includes only a battery warm-up section 17, and is not provided with a temperature control valve 50.
  • the heating circulation circuit 3 of this embodiment differs from the fourth embodiment in part of the configuration of the heat generating section 12.
  • a medium temperature medium extraction section 27 is provided in the casing 40 of the heat generating section 12 in the middle of its flow path 41, and extracts the medium temperature medium heated to a medium temperature in the heat generating section 12 as a part of the medium. That is, in this embodiment, the extracted part of the medium is the medium temperature medium flowing in the middle of the flow path 41 of the heat generating section 12.
  • the inlet side of the battery upstream side pipe 18 of the battery circulation circuit 2 is connected to this medium temperature medium extraction section 27.
  • the battery circulation circuit 2 is configured to flow the medium temperature medium to the battery warm-up section 17.
  • a temperature-sensitive opening/closing valve 47 is provided in this medium temperature medium extraction section 27. This opening/closing valve 47 is configured to be fully closed when the medium temperature medium flowing out of the medium temperature medium extraction section 27 reaches "25°C" or higher.
  • the multistage temperature adjustment device 4 is composed of a heat generating section 12 and an on-off valve 47.
  • the heat generating section 12 and the medium temperature medium outlet section 27 are integrally formed.
  • the ECU 5 controls the electric heater 42 of the heat generating unit 12 and the first pump 14. At this time, the medium temperature medium that has reached a temperature (25° C.) required for warming and flows out of the medium temperature medium outlet 27 in the flow path 41 of the heat generating unit 12 is caused to flow into the battery 11 (battery warming unit 17) to warm up the battery 11.
  • Figure 10 shows the behavior of various parameters related to the control of the ECU 5 in a time chart.
  • (B) shows the opening and closing of the on-off valve 47 made of thermowax.
  • (A) is the same as that in Figure 2, and (D) shows various temperatures, the same as that in Figure 2.
  • the configuration different from the first and third embodiments has the following actions and effects. That is, a part of the medium taken out from the medium temperature medium outlet 27 is a medium temperature medium that flows partway through the flow path 41 of the heat generating unit 12 and is close to the required temperature of the battery 11. Therefore, in the battery circulation circuit 2, it is possible to flow the medium temperature medium to the battery warm-up unit 17 for warming up the battery 11 without adjusting the temperature. Therefore, the configuration for warming up the battery 11 can be simplified by the amount that the temperature adjustment of the medium temperature medium can be omitted.
  • FIG. 11 shows a schematic diagram of the battery warm-up system 1 of this embodiment. This embodiment differs from the fifth embodiment mainly in the configuration of the heating circulation circuit 3.
  • a part of the configuration of the heat generating unit 12 is different from that of the fifth embodiment. That is, in the casing 40 of the heat generating unit 12, a high temperature medium outlet 26 is provided near the outlet 40b instead of the medium temperature medium outlet 27. That is, in this embodiment, the part of the medium that is taken out is the high temperature medium immediately before it flows out of the heat generating unit 12.
  • the battery circulation circuit 2 is configured to flow the high temperature medium to the battery warm-up unit 17.
  • the high temperature medium outlet 26 is connected to the inlet side of the battery upstream piping 18 of the battery circulation circuit 2.
  • the high temperature medium outlet 26 is provided with a temperature-sensitive on-off valve 47.
  • the on-off valve 47 is set to be fully closed when the high temperature medium flowing out of the high temperature medium outlet 26 becomes "25°C" or higher.
  • the multistage temperature adjustment device 4 is composed of a heat generating section 12 and an on-off valve 47.
  • the heat generating section 12 and the high temperature medium outlet section 26 are integrally formed.
  • the ECU 5 controls the electric heater 42 of the heat generating unit 12 and the first pump 14.
  • the high-temperature medium that flows out of the high-temperature medium outlet 26 immediately before the outlet 40b of the heat generating unit 12 and has a temperature close to that required for warming up (25° C.) is caused to flow into the battery 11 (battery warming unit 17) to warm up the battery 11. That is, in this embodiment, the battery 11 is warmed up only by the medium that has been almost completely heated and is at a high temperature.
  • Figure 12 shows a time chart of the behavior of various parameters related to the control of the ECU 5.
  • parameters (A), (B), and (D) are the same as those in Figure 10.
  • the heat generating section inlet temperature THI reaches 25°C and continues to increase, but the battery inlet temperature TBI (temperature of the high-temperature medium) remains at 25°C.
  • the configuration different from the fifth embodiment has the following actions and effects. That is, the part of the medium taken out from the high-temperature medium outlet 26 is the high-temperature medium immediately before it flows out from the heat generating section 12. Therefore, in the battery circulation circuit 2, it is possible to flow the high-temperature medium to the battery warm-up section 17 after adjusting the temperature of the high-temperature medium in order to warm up the battery 11.
  • the temperature of the high-temperature medium is adjusted by adjusting the flow of the high-temperature medium with an opening/closing valve 47 that is sensitive to the temperature of the medium. Therefore, the warm-up of the battery 11 can be performed with a simple configuration in which only the high-temperature medium flows.
  • the battery warm-up system is mounted on an electric vehicle, but the system can also be applied to other vehicles such as electric ships and electric aircraft.
  • the disclosed technology can be applied to batteries in electric vehicles, electric ships, electric aircraft, etc.

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Secondary Cells (AREA)

Abstract

Un système de chauffage de batterie (1) pour chauffer une batterie (11) comprend : une partie de génération de chaleur (12); une partie de chauffage de batterie (17); un noyau de dispositif de chauffage (13); un circuit de circulation de chauffage (3) pour faire circuler un milieu entre la partie de génération de chaleur (12) et le noyau de dispositif de chauffage (13); des parties de retrait de milieu (25, 26) pour retirer une partie du milieu du circuit de circulation de chauffage (3); et un circuit de circulation de batterie (2). Le circuit de circulation de batterie (2) amène la partie du milieu retirée des parties de retrait de milieu (25, 26) à circuler vers la partie de chauffage de batterie (17). Le circuit de circulation de batterie (2) comprend des soupapes de commande de débit (15, 16) pour régler un débit de chacun d'un milieu à haute température et d'un milieu à basse température, et une partie de jonction (21) pour joindre et mélanger le milieu à haute température et le milieu à basse température soumis au réglage de débit.
PCT/JP2023/032978 2022-11-07 2023-09-11 Système de chauffage de batterie WO2024100980A1 (fr)

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JP2022-177866 2022-11-07
JP2022177866A JP2024067636A (ja) 2022-11-07 2022-11-07 バッテリ暖機システム

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1012286A (ja) * 1996-06-21 1998-01-16 Matsushita Electric Ind Co Ltd 自動車の流体加熱循環装置
JP2009224256A (ja) * 2008-03-18 2009-10-01 Denso Corp バッテリ暖機システム
JP2019155930A (ja) * 2018-03-07 2019-09-19 本田技研工業株式会社 車両用熱循環システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1012286A (ja) * 1996-06-21 1998-01-16 Matsushita Electric Ind Co Ltd 自動車の流体加熱循環装置
JP2009224256A (ja) * 2008-03-18 2009-10-01 Denso Corp バッテリ暖機システム
JP2019155930A (ja) * 2018-03-07 2019-09-19 本田技研工業株式会社 車両用熱循環システム

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