WO2023230861A1 - Dispositif de gestion thermique, station d'échange de batterie, et station d'alimentation de stockage d'énergie - Google Patents

Dispositif de gestion thermique, station d'échange de batterie, et station d'alimentation de stockage d'énergie Download PDF

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Publication number
WO2023230861A1
WO2023230861A1 PCT/CN2022/096298 CN2022096298W WO2023230861A1 WO 2023230861 A1 WO2023230861 A1 WO 2023230861A1 CN 2022096298 W CN2022096298 W CN 2022096298W WO 2023230861 A1 WO2023230861 A1 WO 2023230861A1
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WIPO (PCT)
Prior art keywords
fluid
thermal management
management device
temperature
battery
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PCT/CN2022/096298
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English (en)
Chinese (zh)
Inventor
阙仕标
Original Assignee
宁德时代新能源科技股份有限公司
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Priority to CN202280038314.3A priority Critical patent/CN117500690A/zh
Priority to PCT/CN2022/096298 priority patent/WO2023230861A1/fr
Publication of WO2023230861A1 publication Critical patent/WO2023230861A1/fr

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    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/80—Exchanging energy storage elements, e.g. removable batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/65—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

Definitions

  • the present application relates to the field of thermal management, and more specifically, to a thermal management device, a power swap station and an energy storage power station.
  • Temperature is one of the factors that has an important impact on the service life and cycle performance of the battery. Too low a temperature may cause the battery's charging and discharging efficiency to decrease, significantly reducing the overall performance of the electric vehicle; too high a temperature may cause the battery's charging and discharging capacity to decrease, causing serious safety issues in severe cases. Therefore, batteries in vehicles are generally equipped with thermal management components to manage and regulate the temperature of the battery. However, existing thermal management components are designed for batteries in vehicles. For some application scenarios where the batteries are not in the vehicle and the thermal management components cannot work independently (such as batteries in power stations), there is a lack of efficient thermal management capabilities. installation.
  • Embodiments of the present application provide a thermal management device, a battery swap station and an energy storage power station, which can perform thermal management on batteries in the power station and help improve the performance and safety of the batteries in the power station.
  • a thermal management device is provided.
  • the thermal management device is used to regulate the temperature of batteries in a power station.
  • the thermal management device includes: a heating module, a refrigeration module and a fluid circulation loop; the fluid circulation loop has a fluid , the fluid circulation loop includes: a heat exchange part, a fluid storage part and a refrigeration part; wherein the heat exchange part is used to exchange heat with the battery, the fluid storage part is used to store the fluid, the The heating module is used to heat the fluid in the fluid storage part, and the refrigeration module is used to cool the fluid in the refrigeration part.
  • Embodiments of the present application provide a thermal management device, which has a fluid storage part and a refrigeration part, and is capable of heating or cooling the fluid in the fluid circulation loop to control the temperature of the fluid in the fluid circulation loop.
  • the fluid circulation loop includes a heat exchange part, which can exchange heat with the battery to adjust the battery temperature.
  • Thermal management devices can effectively regulate the battery temperature in the power station, effectively improving the situation where the battery in the power station cannot work independently due to its own thermal management components, which affects the performance of the battery or causes thermal runaway, causing serious safety issues, and helps improve different application scenarios. Lower battery performance and safety.
  • the thermal management device includes: a control module for controlling the heating module or the refrigeration module to heat or cool the fluid.
  • automatic control of fluid temperature can be achieved by setting up a control module, saving manpower and improving the working efficiency of the power station.
  • the heating module includes at least one heater for heating the fluid in the fluid storage portion.
  • the heating module directly heats the fluid in the fluid storage part of the fluid circulation loop through the heater.
  • the heater has high heat exchange efficiency and relatively uniform heating of the fluid, which helps to improve the heating of the heating module. efficiency, thereby helping to improve the efficiency of thermal management devices.
  • the refrigeration module includes: an evaporator for absorbing heat from the fluid in the refrigeration module; at least one condenser connected to the evaporator for discharging the The amount of heat absorbed by the evaporator.
  • the refrigeration module directly cools the fluid in the refrigeration part of the fluid circulation loop through the cooperation of the evaporator and the condenser, which can achieve efficient heat exchange and have better refrigeration effect compared with other refrigeration forms. Helps improve the cooling efficiency of the refrigeration module, thereby helping to improve the working efficiency of the thermal management device.
  • the fluid storage portion includes an opening for replenishing the fluid to the fluid storage portion or discharging the fluid out of the fluid circulation loop.
  • excess liquid in the fluid circulation circuit can be promptly removed from the fluid circulation circuit, or fluid can be replenished in the fluid circulation circuit in time to prevent insufficient fluid in the circulation from affecting thermal management.
  • the heat exchange performance of the device by providing openings in the fluid storage part, excess liquid in the fluid circulation circuit can be promptly removed from the fluid circulation circuit, or fluid can be replenished in the fluid circulation circuit in time to prevent insufficient fluid in the circulation from affecting thermal management. The heat exchange performance of the device.
  • the opening includes: a fluid inlet and at least one fluid outlet, the fluid inlet is used to replenish the fluid to the fluid storage part, and the fluid outlet is used to supply the fluid to the fluid storage part.
  • the fluid is discharged outside the circulation loop.
  • the amount of fluid in the fluid circulation loop can be controlled more quickly and flexibly, further ensuring the heat exchanger device Exchange performance.
  • the thermal management device includes: a first detection module for detecting a first temperature and a second temperature, where the first temperature is the temperature of the fluid at a first location in the fluid circulation loop.
  • the second temperature is the temperature of the fluid at a second position in the fluid circulation loop, where the fluid flows from the heat exchange part to the fluid storage part or the refrigeration part , in the second position, the fluid flows from the heat exchange part or the refrigeration part to the heat exchange part;
  • the control module is used to control the heating module or the refrigeration module to process the fluid. Heating or cooling to increase or decrease the second temperature.
  • the thermal management device can obtain the temperature at the first position and the second position in the fluid circulation loop in time, and quickly control the heating module and the refrigeration module through the control module. This allows the heating module and cooling module to heat or cool the fluid as needed to achieve precise control of the battery temperature.
  • the first position is between the heat exchange portion and the refrigeration portion and the second position is between the heat exchange portion and the fluid storage portion.
  • the thermal management device includes: a flow adjustment module for adjusting the flow rate of the fluid in the fluid circulation loop.
  • the flow rate of the fluid in the fluid circulation loop can be controlled, and it is possible to avoid excessive flow rate of the fluid in the fluid circulation loop from damaging the fluid circulation loop, or excessive flow rate of the fluid from affecting the thermal management device. Heat exchange performance.
  • the flow adjustment module includes: a switch valve, which is disposed at the opening and used to adjust the flow rate of the fluid at the opening.
  • the thermal management device further includes: a second detection module configured to detect a first pressure, where the first pressure is the pressure of the fluid at the second position.
  • the pressure of the fluid at the second position in the fluid circulation circuit can be detected, and the fluid in the fluid circulation circuit, especially the pressure of the fluid that is about to flow into the heat exchange part, can be monitored, so that the control module
  • the fluid pressure in the circulation loop can be accurately adjusted based on the fluid pressure data detected by the second detection module, which helps to improve the overall performance of the thermal management device.
  • the thermal management device includes: a power module, the power module is disposed in the fluid circulation circuit and is used to drive the fluid flow in the fluid circulation circuit.
  • the fluid includes at least one of water, purified water, saline solution, and liquid nitrogen.
  • the power station is a power swap station
  • the power swap station includes at least one power cabinet
  • the battery is disposed in the power cabinet
  • the heat exchange part is connected or arranged with a thermal management component of the battery. around the electrical cabinet.
  • the power station is an energy storage power station
  • the energy storage power station includes at least one electrical cabinet
  • the battery is disposed in the electrical cabinet
  • the heat exchange part is connected to a thermal management component of the battery. Or be installed around the electrical cabinet.
  • a power cabinet is provided in the power station, and the battery is placed in the cabinet.
  • the heat exchange part of the fluid circulation loop in the thermal management device is directly connected to the thermal management component of the battery or is arranged around the power cabinet.
  • the temperature of the battery in the electrical cabinet can be accurately controlled by directly replacing the fluid in the thermal management component of the battery or by controlling the ambient temperature around the electrical cabinet.
  • control module is configured to control the heating module to heat the fluid to increase the second temperature when the first temperature is less than a first threshold.
  • control module is configured to control the refrigeration module to cool the fluid to reduce the second temperature when the first temperature is greater than a second threshold.
  • the control module controls the operation of the heating module and the refrigeration module respectively to adjust the temperature of the fluid, and can accurately control the temperature of the fluid to be greater than the second threshold.
  • the second threshold value is within the range of the second threshold value and less than the first threshold value, thereby controlling the battery temperature to be stable within a certain range. This range can be a temperature range in which the battery can maintain efficient cycle performance and ensure safety. Therefore, the thermal management device can effectively control the temperature in the power station. battery thermal management.
  • control module is used to control the heating module to heat the fluid to increase the second temperature to a first preset temperature, and the first preset temperature is greater than or equal to the third A threshold and less than or equal to the second threshold.
  • control module controls the heating module to increase the temperature of the fluid to a first preset temperature, that is, controls the heating module to directly heat the fluid temperature to a preset value, and the preset value is between the second threshold and Within the temperature range formed by the first threshold, the fluid temperature can be controlled within a required temperature range, thereby achieving effective control of the battery temperature.
  • control module is used to control the heating module to heat the fluid to increase the second temperature to a second preset temperature; the second preset temperature is the first preset temperature. Assume that the temperature is added to a first preset value.
  • the first preset value is based on the ambient temperature, the distance between the second position and the battery, and the length of the fluid circulation loop between the second position and the battery. at least one setting in .
  • the control module controls the heating module to increase the fluid temperature to the second preset level.
  • the second preset temperature is higher than the first preset temperature and may not fall within the temperature range formed by the second threshold and the first threshold, but the second preset temperature can effectively compensate for the fluid passing through under the influence of the above factors.
  • the second location is heat loss on the path into the thermal management components of the battery or to the surroundings of the battery. As a result, the thermal management device can more accurately control the temperature of the battery and improve the performance of the thermal management device.
  • control module is used to control the refrigeration module to refrigerate the fluid to reduce the second temperature to a first preset temperature.
  • control module is used to control the refrigeration module to refrigerate the fluid to reduce the second temperature to a third preset temperature; the third preset temperature is the first preset temperature. temperature minus a second preset value.
  • the second preset value is based on the ambient temperature, the distance between the second position and the battery, and the length of the fluid circulation loop between the second position and the battery. at least one setting.
  • the refrigeration module can directly reduce the second temperature to the first preset temperature, that is, directly reduce it to a required temperature range, or it can also reduce the second temperature to the third preset temperature.
  • the third preset temperature is lower than the first preset temperature and may not fall within the temperature range formed by the second threshold and the first threshold, but the third preset temperature can effectively compensate for the fluid passing through under the influence of the above factors.
  • the second location is the heat absorbed on its path into the thermal management components of the battery or around the battery. As a result, the thermal management device can more accurately control the temperature of the battery and improve the performance of the thermal management device.
  • control module is configured to control the flow adjustment module to increase the flow until the first pressure is greater than or equal to the third threshold when the first pressure is less than a third threshold. ; Or in the case where the first pressure is greater than the fourth threshold, control the flow adjustment module to reduce the flow until the first pressure is less than or equal to the fourth threshold.
  • control module can also control the flow adjustment module to adjust the pressure of the fluid in the fluid circulation circuit when the first pressure is less than the third threshold and greater than the fourth threshold, so as to efficiently and effectively control the pressure in the fluid circulation circuit. Precise control further improves the overall performance of the thermal management device.
  • a second aspect provides a power swap station, which includes the thermal management device as described in any embodiment of the first aspect.
  • an energy storage power station in a third aspect, includes the thermal management device as described in any embodiment of the first aspect.
  • Figure 1 is a schematic structural diagram of an electrical device of the present application
  • Figure 2 is a schematic structural diagram of a battery of the present application.
  • FIG. 3 is a schematic structural diagram of a thermal management device of the present application.
  • Figure 4 is a schematic structural diagram of a power station of this application.
  • Figure 5 is another schematic structural diagram of a thermal management device of the present application.
  • Figure 6 is a schematic structural diagram of a power swap station of the present application.
  • Figure 7 is a schematic structural diagram of an energy storage power station of the present application.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
  • Multiple appearing in this application refers to more than two (including two). Similarly, “multiple groups” refers to two or more groups (including two groups), and “multiple tablets” refers to two or more tablets. (including two pieces), multiple columns refers to more than two columns (including two columns).
  • thermal management of batteries is usually achieved by equipping batteries with thermal management components. For example, fans and air ducts are set up around the battery, or water-cooling plates are set up, and the thermal management of the battery is achieved by connecting to the vehicle's mechanical parts or water supply parts.
  • the thermal management components of the battery itself cannot work, and the battery cannot be effectively thermally managed.
  • this application provides a thermal management device that can effectively manage the heat of batteries in power stations, help improve the performance and safety of batteries in power stations, and further expand the application range of batteries.
  • FIG. 1 it is a schematic structural diagram of a vehicle 1 of the present application.
  • the vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle.
  • the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle.
  • a motor 11 , a controller 12 and a battery 10 may be installed inside the vehicle 1 .
  • the controller 12 is used to control the battery 10 to provide power to the motor 11 .
  • the battery 10 may be disposed at the bottom, front or rear of the vehicle 1 .
  • the battery 10 can be used to supply power to the vehicle 1 .
  • the battery 10 can be used as an operating power source of the vehicle 1 and used in the circuit system of the vehicle 1 , for example, to meet the power requirements for starting, navigation, and operation of the vehicle 1 .
  • the battery 10 can not only be used as an operating power source of the vehicle 1 , but also can be used as a driving power source of the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .
  • this application takes a vehicle as an example as an electrical device, but the electrical device can also be a mobile phone, a portable device, a laptop, a ship, a spacecraft, an electric toy, an electric tool, etc.
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.
  • spacecraft include aircraft, rockets, space shuttles, spaceships, etc.
  • electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.
  • electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, planers and more.
  • Electric drills Electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, planers and more.
  • the embodiments of this application impose no
  • a battery refers to a physical module that includes one or more battery cells to provide electrical energy.
  • the battery mentioned in this application may include a battery module or a battery pack.
  • Batteries generally include a box for packaging one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.
  • the battery may include multiple battery cells, wherein the multiple battery cells may be connected in series, in parallel, or in mixed connection.
  • Hybrid connection refers to a mixture of series and parallel connection.
  • Batteries may also be called battery packs.
  • multiple battery cells can be first connected in series, parallel, or mixed to form a battery module, and then multiple battery modules can be connected in series, parallel, or mixed to form a battery.
  • multiple battery cells can directly form a battery, or they can first form a battery module, and then the battery module can form a battery.
  • FIG. 2 it is a schematic structural diagram of a battery 10 of the present application.
  • the battery 10 may include a plurality of battery cells 20 .
  • the number of battery cells 20 can be set to any value.
  • Multiple battery cells 20 can be connected in series, parallel or mixed connection to achieve larger capacity or power.
  • the battery cell 20 may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery or a magnesium ion battery, etc., which are not limited in the embodiments of the present application.
  • the battery cell 20 may also be called a cell.
  • the battery cell 20 includes an electrode assembly and an electrolyte.
  • the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. Battery cells mainly rely on the movement of metal ions between the positive and negative electrodes to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer.
  • the positive electrode active material layer is coated on the surface of the positive electrode current collector.
  • the current collector that is not coated with the positive electrode active material layer protrudes from the current collector that is coated with the positive electrode active material layer.
  • the current collector coated with the positive electrode active material layer serves as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganate, etc.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer.
  • the negative electrode active material layer is coated on the surface of the negative electrode current collector.
  • the current collector that is not coated with the negative electrode active material layer protrudes from the current collector that is coated with the negative electrode active material layer.
  • the current collector coated with the negative active material layer serves as the negative electrode tab.
  • the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon.
  • the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.
  • the material of the separator can be polypropylene (PP) or polyethylene (Polyethylene, PE).
  • the electrode assembly may have a rolled structure or a laminated structure, and the embodiments of the present application are not limited thereto.
  • the battery 10 further includes a box, a battery management system and related installation structural components.
  • the battery management system includes thermal management components.
  • thermal management device 300 according to the embodiment of the present application will be introduced.
  • FIG. 3 is a schematic structural diagram of a thermal management device 300 according to an embodiment of the present application.
  • the thermal management device 300 is used to adjust the temperature of batteries in a power station.
  • the thermal management device 300 includes a heating module 301 , a cooling module 302 and a fluid circulation circuit 303 .
  • the fluid circulation circuit 303 includes a heat exchange part 3031 , a fluid storage part 3032 and a refrigeration part 3033 .
  • the heat exchange part 3031 is used for heat exchange with the battery 10, and the fluid storage part 3032 is used for storing fluid.
  • the heating module 301 is used to heat the fluid in the fluid storage part 3032, and the cooling module 303 is used to cool the fluid in the refrigeration part 3033.
  • the thermal management device 300 is applied in scenarios where the thermal management component of the battery 10 itself cannot work properly, especially in usage scenarios such as power stations.
  • the thermal management device 300 heats or cools the fluid in the fluid circulation loop 303 through the heating module 301 and the cooling module 302 .
  • the fluid in the fluid circulation circuit 303 flows from the fluid storage part 3032 or the refrigeration part 3033 to the heat exchange part 3031 and then flows back to the fluid storage part 3032 or the refrigeration part 3033.
  • the fluid exchanges heat with the battery 10, thereby,
  • the thermal management device 300 can achieve effective temperature control of the battery 10 by heating or cooling the fluid.
  • the fluid circulation loop 303 can be a circulation loop composed of a heat exchange part 3031, a heating part 3032 and a refrigeration part 3033 connected in series; it may also be shown in Figure 3 that the heat exchange part 3031 is connected with the heating part 3032 and the refrigeration part 3033 respectively.
  • Section 3033 forms a circular loop.
  • Figure 3 only shows one possible situation, and the embodiment of the present application does not limit this.
  • the thermal management device 300 can control the temperature of the battery 10 in the power station, which solves the problem that the battery 10 in the power station cannot perform effective thermal management because its own thermal management components cannot work independently.
  • the performance and safety of the battery 10 in the power station are improved, and the risk of performance degradation or safety hazards of the battery 10 due to excessively high or low temperature of the battery 10 in the power station is reduced, thus helping to improve the safety of the power station.
  • the thermal management device 300 controls the temperature of the battery 10 by controlling the temperature of the fluid. Compared with other thermal management methods such as air cooling, the heat conversion efficiency of controlling the fluid temperature is high and the temperature control accuracy is high, and the temperature of the battery 10 can be reduced. The temperature is controlled within an appropriate range to improve the thermal management efficiency and thermal management effect of the thermal management device 300 .
  • FIG. 4 is a schematic structural diagram of a power station 400 according to this embodiment.
  • the power station 400 is a power swap station.
  • the power swap station includes at least one power cabinet 401.
  • the battery 10 is placed in the power cabinet 401.
  • the heat exchange part 3031 is connected to the thermal management component of the battery 10 or is arranged around the power cabinet 401.
  • the heat exchange part 3031 of the fluid circulation loop 303 in the thermal management device 300 may be directly connected to the thermal management component of the battery 10, for example, connected to a water cooling plate of the battery 10.
  • the thermal management components of the battery 10 described in the embodiments of this application refer to thermal management components based on fluid cooling or heating.
  • the thermal management device 300 is directly connected to the thermal management component of the battery 10, and can replace the fluid in the thermal management component through the fluid circulation loop 303, so as to effectively control the temperature of the fluid in the fluid circulation loop 303 for the battery 10 in the power station 400. Thermal management.
  • the heat exchange part 3031 of the fluid circulation circuit 303 in the thermal management device 300 is disposed around the electrical cabinet 401 , and the battery 10 is disposed in the electrical cabinet 401 .
  • the heat exchange part 3031 arranged around the fluid circulation loop 303 can effectively control the ambient temperature around the battery 10, thereby achieving effective thermal management of the battery 10 in the power station 400 through the influence of the ambient temperature on the temperature of the battery 10.
  • the fluid in the fluid circulation loop 303 can be passed through.
  • the temperature of the battery 10 is controlled within a relatively precise range, thereby achieving precise control of the temperature of the battery 10 in the power station 400.
  • the power station 400 is an energy storage power station.
  • the energy storage power station includes at least one electrical cabinet 401.
  • the battery 10 is arranged in the electrical cabinet 401.
  • the heat exchange part 3031 is connected to the thermal management component of the battery 10 or is arranged around the electrical cabinet 401. .
  • the power station 400 is a substation.
  • the power swap station includes at least one electrical cabinet 401.
  • the battery 10 is disposed in the electrical cabinet 401.
  • the heat exchange part 3031 is connected to or disposed in the thermal management component of the battery 10.
  • the thermal management device 300 includes a control module 304 .
  • the control module 304 is used to control the heating module 301 to heat the fluid or the refrigeration module 302 to cool the fluid.
  • control module 304 may be a single-chip microcomputer, or may be the main control of the power station 400, or a single-chip microcomputer connected to the main control of the power station 400, or the like.
  • control module 304 includes a memory, a processor, a communication interface, and the like.
  • the memory can be read-only memory (ROM), static storage device and random access memory (RAM), and computer programs can be stored in the memory.
  • ROM read-only memory
  • RAM random access memory
  • the processor can be a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), a graphics processing unit (GPU), or one or more integrated circuits.
  • the circuit is used to execute relevant programs to realize the functions required to be performed by the units and modules in the thermal management device according to the embodiment of the present application.
  • the processor can also be an integrated circuit chip with signal processing capabilities.
  • the functions required to be performed by the units and modules in the thermal management device of the embodiment of the present application can be completed by instructions in the form of hardware integrated logic circuits or software in the processor.
  • the above-mentioned processor can also be a general-purpose processor, a digital signal processor (DSP), an ASIC, an off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices , discrete hardware components.
  • DSP digital signal processor
  • FPGA off-the-shelf programmable gate array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and combines its hardware to complete the functions required to be performed by the units and modules included in the device of the embodiment of the present application.
  • control module 304 only mentions memory, processor, and communication interface, during the specific implementation process, according to specific needs, those skilled in the art will understand that the control module 304 may also include hardware that implements other additional functions. device. In addition, those skilled in the art should understand that the control module 304 may only include components necessary to implement the embodiments of the present application.
  • control module 304 in the thermal management device 300, automatic control of the fluid temperature can be realized, thereby automatically controlling the temperature of the battery 10, effectively improving the working efficiency of the thermal management device 300 and the power station 400.
  • FIG. 5 is another schematic structural diagram of a thermal management device 300 according to an embodiment of the present application.
  • the heating module 301 includes at least one heater 3011 for heating the fluid in the fluid storage portion 3032 .
  • the fluid storage portion 3032 may be a water storage tank, a water reservoir, or the like.
  • the heater 3011 can be directly disposed in the fluid storage part 3032 and in direct contact with the fluid in the fluid storage part 3032. When the heater 3011 works, it directly heats the fluid in the fluid storage part 3032; the heater 3011 can also be disposed around the fluid storage part 3032. , in contact with the fluid storage part 3032, the heater 3011 heats the fluid in the fluid storage part 3032 by heating the outer wall of the fluid storage part 3032 when operating.
  • the fluid storage part 3032 may be a water storage tank, a water reservoir, etc.
  • the water storage tank or water reservoir described in this application does not limit the fluid therein.
  • the fluid in the water tank can be water or other fluids, and the same applies to the water tank.
  • the heater 3011 is an electric heater.
  • the electric heater has a heating tube or a heating plate that is provided directly in the fluid storage portion 3032 or around an outer wall of the fluid storage portion 3032 .
  • the heating module 301 uses an electric heater to heat the fluid in the fluid storage part of the fluid circulation loop.
  • the electric heater has high heat exchange efficiency and relatively uniform heating of the fluid, which helps to improve the efficiency of the heating module 301. Heating efficiency helps the heating performance and working efficiency of the thermal management device 300 .
  • the electric heater is in the form of a heating tube.
  • the volume and shape of the heating tube are smaller, which facilitates the overall layout of the thermal management device 300 and helps save the space of the thermal management device 300 .
  • the power of the electric heater is 10-50kW.
  • the heater 3011 is an infrared heater.
  • the infrared heater has a heating tube or a heating plate.
  • the heating tube or heating plate is provided directly in the fluid storage portion 3032 or around an outer wall of the fluid storage portion 3032.
  • the refrigeration module 302 includes an evaporator 3021 and at least one condenser 3022.
  • the evaporator 3021 is connected to the condenser 3022, where the evaporator 3021 is used to absorb the heat of the fluid in the refrigeration module 302 and condense it.
  • the evaporator 3022 is used to discharge the heat absorbed by the evaporator 3021.
  • the refrigeration module 302 contains a refrigerant.
  • the refrigerant may be at least one of fluorine, chlorine, bromine derivatives of saturated hydrocarbons, hydrocarbons, ammonia, hydrogen, helium and other substances.
  • the embodiments of the present application are suitable for The type of refrigerant is not limited.
  • the refrigeration part of the fluid circulation loop 303 in the thermal management device 300 is arranged in the evaporator 3021 of the refrigeration module 302. When the refrigeration module 302 is working, the refrigerant in the evaporator 3021 absorbs the heat of the refrigeration part 3033 of the fluid circulation loop 303 and vaporizes. Thus, the fluid in the refrigeration portion 3033 is refrigerated.
  • the refrigerant in the evaporator 3021 absorbs heat and vaporizes, then enters the condenser 3022. It is condensed and liquefied in the condenser 3022, changes from gaseous state to liquid state, and releases heat, that is, the heat absorbed by the evaporator 3021 is discharged.
  • the refrigeration module 302 has an evaporator 3021 and a condenser 3022, which cooperate to cool down the refrigeration part 3033 of the fluid circulation loop 303.
  • This refrigeration method has high heat exchange efficiency and good refrigeration effect, which helps to improve
  • the refrigeration efficiency of the refrigeration module 303 helps improve the refrigeration performance and working efficiency of the thermal management device 300.
  • the condenser 3022 includes a compressor for compressing the gaseous refrigerant in the condenser to liquefy the refrigerant and release heat.
  • the compressor power of condenser 3022 is 1-10kW.
  • the fluid storage portion 3032 includes an opening 3032 a for replenishing fluid into the fluid storage portion 3032 or discharging fluid to the outside of the fluid circulation circuit 303 .
  • the fluid storage part 3032 may be provided with one or more openings 3032a.
  • the opening 3032a may be both a fluid inlet and a fluid outlet. According to the use needs of the thermal management device 300, the fluid is replenished into the fluid storage part 3032 through the opening 3032a or the fluid is discharged from the fluid storage part 3032, so that the fluid circulation circuit 303 of the thermal management device 300 can operate stably.
  • the amount of fluid in the fluid storage part 3032 can be flexibly controlled, thereby achieving flexible control of the total amount of fluid in the fluid circulation circuit 303, and effectively avoiding the thermal management device 300 due to fluid circulation.
  • Insufficient fluid in the circuit 303 prevents efficient control of the temperature of the battery 10 , or avoids excessive fluid and excessive pressure in the fluid circulation circuit 303 causing damage to the fluid circulation circuit 303 , thereby helping to increase the service life of the thermal management device 300 .
  • the opening 3032a includes a fluid inlet and at least one fluid outlet.
  • the fluid inlet is used to replenish fluid into the fluid storage part 3032
  • the fluid outlet is used to discharge fluid to the outside of the fluid circulation circuit 303 .
  • the fluid storage part 3032 may be provided with a plurality of openings 3032a, which are the fluid inlet and at least one fluid outlet.
  • the fluid inlet is provided on the fluid storage part 3032 at a higher position than the fluid outlet.
  • the fluid inlet may be provided on the top wall of the box, and the fluid outlet may be provided on the side wall of the box.
  • the fluid inlet provided on the top wall of the box helps the fluid flow into the fluid storage part 3032 under the action of gravity
  • the fluid discharge port provided on the side wall of the box helps the fluid flow out of the fluid storage part 3032 under the action of gravity. Thereby, fluid can be replenished into the fluid storage portion 3032 or discharged out of the fluid storage portion without the help of external force.
  • providing multiple openings 3032a in the fluid storage part 3032 helps to improve the control efficiency of the total amount of fluid in the fluid circulation loop 303; on the other hand, gravity can be used to realize the flow of the fluid in the fluid storage part 3032. Replenishment and discharge, saving power consumption caused by fluid replenishment and discharge, helping to improve the working efficiency of the thermal management device.
  • the thermal management device 300 includes a first detection module 305 for detecting the first temperature T1 and the second temperature T2.
  • the first temperature T1 is the temperature of the fluid at the first position P1 in the fluid circulation circuit 303
  • the second temperature T2 is the temperature of the fluid at the second position P2 in the fluid circulation circuit 303.
  • the fluid flows from the heat exchange part 3031 to the fluid storage part 3032 or to the refrigeration part 3033; at the second position P2, the fluid flows from the fluid storage part 3032 or the refrigeration part 3033 to the heat exchange part 3031.
  • control module 304 is used to control the heating module 301 or the cooling module 302 to heat or cool the fluid to increase or decrease the second temperature T2.
  • the fluid flows from the heat exchange part 3031 to the fluid storage part 3032 or to the refrigeration part 3033.
  • the first position P1 is the water outlet of the heat exchange part 3031, the fluid storage part 3032 or the refrigeration part. 3033 water inlet.
  • the second position P2 is the water inlet of the heat exchange part 3031 and the water outlet of the fluid storage part 3032 or the refrigeration part 3033.
  • the temperature at the first position P1 is the temperature of the fluid after heat exchange, which can reflect the current temperature of the battery 10; the temperature at the second position P2 is the temperature of the fluid that is about to flow into the heat exchange part 3031 for heat exchange with the battery 10, and can Reflects the temperature that the battery 10 is expected to reach.
  • the first detection module 305 includes at least two detection units 3051, which respectively detect the temperature of the fluid at different locations.
  • the thermal management device 300 can promptly obtain the first temperature T1 of the fluid at the first position P1 and the second temperature T2 of the fluid at the second position P2 in the fluid circulation loop 303, Therefore, it is possible to determine whether the current temperature of the battery 10 is overheated or undercooled based on the first temperature T1, and by heating or cooling the fluid, the second temperature T2 flows into the fluid circulation loop 3031 again at the desired temperature to adjust the temperature of the battery 10. Therefore, the thermal management device 300 can accurately and timely regulate the temperature of the battery 10 .
  • the first position P1 is located between the heat exchange part 3031 and the refrigeration part 3033, and the second position P2 is located between the heat exchange part 3031 and the fluid storage part 3032.
  • the thermal management device 300 includes a flow adjustment module 306 for adjusting the flow of fluid in the fluid circulation loop 303 .
  • the flow adjustment module 306 includes a switch valve 3061, which is disposed at the opening 3032a for regulating the flow of fluid at the opening 3032a.
  • the switch valve 3061 is disposed at the second position P2 for adjusting the flow of fluid at the water inlet of the heat exchange part 3031.
  • the flow rate of the fluid in the fluid circulation circuit 303 can be flexibly controlled by setting the flow adjustment module 306 to avoid excessive flow of fluid in the fluid circulation circuit 303 from damaging the fluid circulation circuit 303, or excessive flow of fluid from affecting the heat exchange part.
  • the heat exchange between 3031 and the battery 10 helps improve the heat exchange performance of the thermal management device 300 and extend the service life of the thermal management device 300 .
  • the thermal management device further includes a second detection module 307 for detecting the first pressure p, which is the pressure p of the fluid at the second position P2.
  • the first pressure p of the fluid at the second position P2 can reflect the current pressure situation of the fluid in the heat exchange part 3031. Obtaining the first pressure p helps the thermal management device 300 promptly adjust the flow rate of the fluid in the fluid circulation loop 303 according to the pressure of the heat exchange part 3031 to ensure a safe and efficient heat exchange process between the battery 10 and the fluid.
  • the second detection module 307 may include multiple pressure detection units that respectively detect the pressure of the fluid at different locations in the fluid circulation circuit 303, so that the thermal management device 300 can adjust the flow rate of the fluid in the fluid circulation circuit 303 according to the pressure of the fluid at different locations.
  • the thermal management device 300 can accurately regulate the pressure in the fluid circulation circuit according to the pressure data of the fluid, helping to improve the overall performance of the thermal management device 300.
  • the thermal management device 300 includes a power module (not shown in the figure).
  • the power module is disposed in the fluid circulation circuit 303 and is used to drive the fluid flow in the fluid circulation circuit 303 .
  • a power module may include one or more power units.
  • the power unit as a liquid pump as an example, the liquid pump can be disposed at different positions of the fluid circulation circuit 303 to drive the fluid to flow in the fluid circulation circuit 303 .
  • the power unit may be disposed at the second position P2 to drive the fluid into the heat exchange part 3031 in time.
  • the fluid includes at least one of water, purified water, saline solution, and liquid nitrogen.
  • control module 304 controls the temperature of the fluid.
  • control module 304 is used to control the heating module 301 to heat the fluid to increase the second temperature T2 when the first temperature T1 is less than the first threshold.
  • control module 304 is configured to control the refrigeration module 302 to refrigerate the fluid to reduce the second temperature T2 when the first temperature T1 is greater than the second threshold.
  • the second threshold is greater than the first threshold
  • the temperature range from the first threshold to the second threshold is a suitable temperature range for the battery.
  • the control module controls the heating module 301 and the refrigeration module 302 according to the first temperature T1, and when the first temperature T1 does not fall within the range of the first threshold to the second threshold, the fluid in the fluid circulation loop is heated or cooled in time, so as to The battery 10 is heated or cooled.
  • the first threshold is greater than or equal to 10°C and less than or equal to 20°C; the second threshold is greater than or equal to 45°C and less than or equal to 55°C.
  • control module 304 adjusts and accurately controls the second temperature T2 of the fluid according to the first temperature T1 of the fluid, thereby controlling the temperature of the battery 10 to be stable within a certain range.
  • This range enables the battery 10 to maintain efficient cycle performance and ensure safety. Therefore, the thermal management device 300 can effectively perform thermal management on the battery in the power station.
  • control module 304 is used to control the heating module 301 to heat the fluid to increase the second temperature T2 to a first preset temperature, which is greater than or equal to the first threshold and less than or equal to the second threshold.
  • control module 304 is used to control the heating module 301 to heat the fluid to increase the second temperature T2 to a second preset temperature.
  • the second preset temperature is the first preset temperature plus the first preset value.
  • the preset value is set according to at least one of the ambient temperature, the distance between the second position screen and the battery 10 , and the length of the fluid circulation loop 303 between the second position P2 and the battery 10 .
  • the control module 304 can directly cause the heating module 301 to heat the second temperature T2 of the fluid to the first preset temperature, that is, within the temperature range from the first threshold to the second threshold.
  • the first preset temperature that is, within the temperature range from the first threshold to the second threshold.
  • environmental temperature the distance between the second position P2 and the battery 10
  • the length of the fluid circulation loop 303 between the second position P2 and the battery 10 and other factors have an impact on the fluid temperature in the fluid circulation loop 303 , for example, the ambient temperature is higher than Too low, the distance between the second position P2 and the battery 10 is far, or the length of the fluid circulation loop 303 between the second position P2 and the battery 10 is too long, etc., all of which will cause the fluid to flow through the second position P2.
  • the heat loss experienced during the heat exchange part 3031 causes the temperature of the fluid heated to the battery 10 in the heat exchange part 3031 to be lower than the second temperature T2.
  • the control module 304 can cause the heating module 301 to heat the second temperature T2 of the fluid to a second preset temperature, and the second preset temperature is higher than the first preset temperature, whereby The heat loss of the fluid caused by the above factors can be compensated, so that the temperature of the fluid that undergoes heat exchange with the battery 10 is within the temperature range from the first threshold to the second threshold.
  • control module 304 is used to control the refrigeration module 302 to refrigerate the fluid to reduce the second temperature T2 to the first preset temperature.
  • control module 304 is used to control the refrigerating fluid of the refrigeration module 302 to reduce the second temperature T2 to a third preset temperature.
  • the third preset temperature is the first preset temperature minus the second preset value.
  • the setting value is set according to at least one of the ambient temperature, the distance between the second position P2 and the battery 10 , and the length of the fluid circulation loop 303 between the second position P2 and the battery 10 .
  • control module 304 controls the refrigeration module 302 to refrigerate the fluid, it can directly cause the refrigeration module 302 to reduce the second temperature T2 of the fluid to the first preset temperature; it can also cause the refrigeration module 302 to reduce the second temperature T2 of the fluid to the first preset temperature; 302 reduces the second temperature T2 of the fluid to a third preset temperature, which is smaller than the first preset temperature, thereby compensating for the distance between the second position P2 and the battery 10 due to excessive ambient temperature.
  • the fluid circulation loop 303 between the second position P2 and the battery 10 is too far away or the length of the fluid circulation loop 303 between the second position P2 and the battery 10 is too long, the fluid will absorb heat while flowing to the heat exchange part 3031 through the second position P2 and the temperature will rise.
  • the temperature of the fluid that undergoes heat exchange with the battery 10 is within a temperature range from the first threshold to the second threshold.
  • control module 304 is used to control the flow adjustment module 306 to increase the flow rate until the first pressure p is greater than or equal to the third threshold when the first pressure p is less than the third threshold; or when the first pressure is greater than the fourth threshold In this case, the flow adjustment module 306 is controlled to reduce the flow rate until the first pressure p is less than or equal to the fourth threshold.
  • the range from the third threshold to the fourth threshold is a pressure range that enables the thermal management device 300 to have safe and efficient heat exchange efficiency. If the first pressure p is less than the third threshold, it means that the fluid pressure is small and the fluid flow is insufficient, which may be It will result in lower heat exchange efficiency, so the flow rate needs to be increased to increase the pressure; the first pressure p is greater than the fourth threshold, indicating that the fluid pressure is relatively large, which may affect the heat exchange efficiency or cause damage to the fluid circulation loop 303, so The flow rate needs to be reduced to reduce the pressure.
  • control module 304 regulates the pressure of the fluid flowing into the heat exchange part 3031 according to the first pressure p at the second position P2, and can accurately regulate the pressure in the fluid circulation circuit 303 in a timely manner, further improving the The overall performance of the thermal management device 300.
  • FIG. 6 is a schematic structural diagram of a power swap station 600 according to the embodiment of the present application. As shown in FIG. 6 , the power swap station 600 includes the thermal management device 300 in any possible embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an energy storage power station 700 according to this embodiment. As shown in FIG. 7 , the energy storage power station 700 includes the thermal management device 300 in any possible embodiment of the present application.

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Abstract

La présente demande divulgue un dispositif de gestion thermique, une station d'échange de batterie et une station d'alimentation de stockage d'énergie. Le dispositif de gestion thermique est utilisé pour réguler une température dans la station d'alimentation ; le dispositif de gestion thermique comprend : un module de chauffage, un module de réfrigération et un circuit de circulation de fluide ; un fluide est disposé dans le circuit de circulation de fluide, et le circuit de circulation de fluide comprend une partie d'échange de chaleur, une partie de stockage de fluide et une partie de réfrigération, la partie d'échange de chaleur étant utilisée pour effectuer un échange de chaleur avec une batterie, la partie de stockage de fluide étant utilisée pour stocker le fluide, le module de chauffage étant utilisé pour chauffer le fluide dans la partie de stockage de fluide, et le module de réfrigération étant utilisé pour réfrigérer le fluide dans la partie de réfrigération. Le dispositif de gestion thermique selon la présente demande peut effectuer une gestion thermique sur la batterie dans la station d'alimentation, et aide à améliorer les performances et la sécurité de la batterie dans la station d'alimentation.
PCT/CN2022/096298 2022-05-31 2022-05-31 Dispositif de gestion thermique, station d'échange de batterie, et station d'alimentation de stockage d'énergie WO2023230861A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280038314.3A CN117500690A (zh) 2022-05-31 2022-05-31 一种热管理装置、换电站及储能电站
PCT/CN2022/096298 WO2023230861A1 (fr) 2022-05-31 2022-05-31 Dispositif de gestion thermique, station d'échange de batterie, et station d'alimentation de stockage d'énergie

Applications Claiming Priority (1)

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PCT/CN2022/096298 WO2023230861A1 (fr) 2022-05-31 2022-05-31 Dispositif de gestion thermique, station d'échange de batterie, et station d'alimentation de stockage d'énergie

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108583348A (zh) * 2018-06-08 2018-09-28 上海加冷松芝汽车空调股份有限公司 能为新能源汽车充电电池提供预热和冷却的充电站
CN111916864A (zh) * 2020-07-20 2020-11-10 浙江吉智新能源汽车科技有限公司 一种换电站的热管理系统及换电站
CN212667170U (zh) * 2020-06-24 2021-03-09 武汉蔚来能源有限公司 一种电池热管理系统及换电站
CN113410539A (zh) * 2021-05-17 2021-09-17 中国科学院电工研究所 储能电站冷却方法、系统、电子设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108583348A (zh) * 2018-06-08 2018-09-28 上海加冷松芝汽车空调股份有限公司 能为新能源汽车充电电池提供预热和冷却的充电站
CN212667170U (zh) * 2020-06-24 2021-03-09 武汉蔚来能源有限公司 一种电池热管理系统及换电站
CN111916864A (zh) * 2020-07-20 2020-11-10 浙江吉智新能源汽车科技有限公司 一种换电站的热管理系统及换电站
CN113410539A (zh) * 2021-05-17 2021-09-17 中国科学院电工研究所 储能电站冷却方法、系统、电子设备

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