CN111834704A - Power battery thermal management system - Google Patents
Power battery thermal management system Download PDFInfo
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- CN111834704A CN111834704A CN202010833640.6A CN202010833640A CN111834704A CN 111834704 A CN111834704 A CN 111834704A CN 202010833640 A CN202010833640 A CN 202010833640A CN 111834704 A CN111834704 A CN 111834704A
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- power battery
- phase change
- heat release
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- 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
- B60L58/26—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 cooling
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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
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- 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
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a power battery thermal management system, which specifically comprises: the system comprises a power battery pack, a temperature sensing unit, a controllable phase change heat release unit and a liquid cooling channel, wherein the controllable phase change heat release unit comprises a phase change heat storage unit and a phase change material heat release circuit; the power battery pack comprises a 1 st power battery and a 2 nd power battery, the temperature sensing unit comprises a temperature signal reading device, a first temperature sensing probe and a second temperature sensing probe, and the data acquisition ends of the first temperature sensing probe and the second temperature sensing probe are connected with the temperature signal reading device; the phase-change heat storage unit comprises a plurality of groups of phase-change material packaging shells and phase-change materials which are arranged in parallel, the phase-change materials are packaged in the phase-change material packaging shells, and in winter working conditions, due to the use of the phase-change materials and the controllable heat release circuit, a winter heating film adopted by a traditional power battery can be replaced, and the cost is reduced.
Description
Technical Field
The invention belongs to the field of thermal management of power batteries of electric automobiles, and particularly relates to a thermal management system of a power battery suitable for winter and summer.
Background
Automobiles consume large quantities of fossil fuels, and the use of these fossil fuels raises energy crisis and environmental pollution problems. In order to overcome these two problems, electric vehicles have come to be operated. However, the electric vehicle technology still has various problems, which limits the wide application of the electric vehicle. The power battery is used as a main component of the electric automobile and provides electric power for the running of the electric automobile. However, the operation of the power battery has the following two problems: in a high-air-temperature environment in summer, heat released by the power battery is difficult to efficiently discharge, so that the output power of the power battery is reduced, the service life of the power battery is shortened, and meanwhile, explosion is easily caused to threaten the driving safety; in a low-temperature environment in winter, the output performance of the power battery is greatly reduced, the battery needs to be preheated by the heating film, so that the performance of the battery is guaranteed, and the electric power consumed by the heating film shortens the endurance mileage of the electric automobile. The conventional thermal management system for the power battery of the electric automobile generally adopts a mode of cooling liquid in summer and preheating a heating film in winter to ensure the safe and efficient operation of the power battery. However, the power consumption of the liquid cooling system and the heating film system is too large, which greatly weakens the endurance mileage of the electric vehicle.
Disclosure of Invention
According to the problems existing in the prior art, the invention discloses a power battery thermal management system, which specifically comprises the following steps: the system comprises a power battery pack, a temperature sensing unit, a controllable phase change heat release unit and a liquid cooling channel, wherein the controllable phase change heat release unit comprises a phase change heat storage unit and a phase change material heat release circuit;
the power battery pack comprises a 1 st power battery and a 2 nd power battery, the temperature sensing unit comprises a temperature signal reading device, a first temperature sensing probe and a second temperature sensing probe, and the data acquisition ends of the first temperature sensing probe and the second temperature sensing probe are connected with the temperature signal reading device; the phase change heat storage unit comprises a plurality of groups of phase change material packaging shells and phase change materials which are arranged in parallel, and the phase change materials are packaged in the phase change material packaging shells; the phase change material heat release circuit comprises a heat release control battery, a heat release control switch, a heat release circuit positive electrode wiring and a heat release circuit negative electrode wiring, wherein one end of the heat release circuit positive electrode wiring and one end of the heat release circuit negative electrode wiring are inserted into the phase change heat storage material, the other end of the heat release circuit positive electrode wiring is connected with the heat release control battery positive electrode, the negative electrode of the heat release control battery is connected with one end of the heat release control switch, and the other end of the heat release control switch is connected with the heat release circuit negative electrode wiring to form a loop;
the liquid cooling channel comprises a liquid inlet channel, a liquid return channel, a liquid inlet pipeline and a liquid return pipeline, and the liquid inlet pipeline is positioned at the front end of the liquid inlet channel; the liquid return pipeline is positioned at the front end of the liquid cooling liquid return channel;
the phase change heat storage unit is located between 1 st power battery and the 2 nd power battery, first temperature sensing probe is located one side that is close to the phase change heat storage unit of 1 st power battery, second temperature sensing probe is located one side that is close to the phase change heat storage unit of second power battery, inlet channel and feed liquor pipeline are located one side of power battery and phase change heat storage unit, return the liquid passageway and return the opposite side that the liquid pipeline is located power battery and phase change heat storage unit.
The system further comprises a cover plate, wherein the cover plate comprises an upper cover plate and a lower cover plate, and the upper cover plate and the lower cover plate are respectively arranged at the upper end and the lower end of the power battery and the phase change heat storage unit.
Due to the adoption of the technical scheme, the power battery thermal management system provided by the invention has the following beneficial effects: (1) due to the existence of the phase change heat storage unit, the consumption of the liquid cooling working medium can be reduced in the operating condition in summer, the power consumption required by refrigeration is reduced, and the increase of the endurance mileage of the electric automobile is facilitated; (2) in winter working conditions, due to the use of the phase-change material and the controllable heat release circuit, a winter heating film adopted by a traditional power battery can be replaced, the cost is reduced, in addition, the heat required by preheating the power battery is derived from the heat released when the electric automobile is in a running state, extra power supply is not needed, and the winter endurance mileage of the electric automobile can be greatly improved; (3) due to the use of a plurality of groups of packaging units, the temperature distribution of different parts of the power battery tends to be uniform; (4) in the system, the phase change heat storage material is thickening modified sodium sulfate decahydrate, so that the system is low in cost and high in popularization value.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a power battery thermal management system.
FIG. 2 is an exploded view of a power cell thermal management system.
Fig. 3 is a sectional view of the phase-change heat storage unit.
FIG. 4 is a schematic diagram of the positive and negative connections of the phase change thermal storage unit and the heat release control circuit;
in the figure: the device comprises a 1-1 st power battery, a 1-2 nd power battery, a 2-1 temperature signal reading device, a 2-2 first temperature sensing probe, a 2-3 second temperature sensing probe, a 3-1 phase change material packaging shell, a 3-2 phase change material, a 4-1 heat release control battery, a 4-2 heat release control switch, a 4-3 heat release circuit positive connection wire, a 4-4 heat release circuit negative connection wire, a 5-1 liquid inlet channel, a 5-2 liquid return channel, a 5-3 liquid inlet pipeline, a 5-4 liquid return pipeline, a 6-1 upper cover plate and a 6-2 lower cover plate.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the drawings in the embodiments of the present invention:
when the battery pack operates under the working condition of summer, when the temperature of the battery pack is higher than the phase change temperature of the phase change material, the heat released by the battery is absorbed by the phase change material, when the temperature of the battery is continuously increased and the temperature of a measuring point of the temperature sensor exceeds a set threshold value of 45 ℃, the liquid cooling system is involved, and cooling liquid enters a channel between the power battery and the phase change heat storage unit to be cooled, so that the high-efficiency operation of the power battery is ensured. When the electric automobile stops running, the phase-change material cannot release heat due to large supercooling degree and is in a liquid state, when the automobile needs to be started again, the environment temperature is low, the phase-change material can be excited to be converted from the liquid state to the solid state by an electric signal by opening a phase-change material heat release switch to release phase-change heat, and therefore the purpose of preheating the power battery is achieved.
The core content related to the invention comprises: the controllable phase-change heat release unit is composed of a large-supercooling-degree heat storage material with the phase-change temperature of 31 ℃, a phase-change material heat release switch, a phase-change material heat release power supply and a phase-change material heat release electrode. The controllable phase change heat release unit comprises a phase change heat storage unit 3 and a phase change material heat release circuit 4, in winter working conditions, the phase change material is melted due to heat generated by the operation of the power battery, and the phase change material cannot spontaneously change phase and continuously keeps in a liquid state when an automobile stops operating due to the large supercooling degree of the phase change material. When the electric automobile needs to be started, the phase-change material is excited to generate liquid-solid transformation and release heat by communicating the phase-change material controllable heat release circuit, and the power battery is preheated, so that the preheating process of the power battery does not need to use a heating film, the power consumption is not needed, and the endurance mileage of the electric automobile under the working condition in winter is prolonged.
The thermal management system for the power battery shown in fig. 1-3 comprises a 1 st power battery 1-1, a 2 nd power battery 1-2, a temperature signal reading device 2-1, a first temperature sensing probe 2-2, a second temperature sensing probe 2-3, a plurality of groups of phase change material packaging shells 3-1 arranged in parallel, phase change materials 3-2, a heat release control battery 4-1, a heat release control switch 4-2, a heat release circuit positive electrode wiring 4-3, a heat release circuit negative electrode wiring 4-4, a liquid inlet channel 5-1, a liquid return channel 5-2, a liquid inlet pipeline 5-3, a liquid return pipeline 5-4, an upper cover plate 6-1 and a lower cover plate 6-2. The connection mode is as follows: the first temperature sensing probe 2-2 is positioned on one side of the 1 st power battery 1-1, which is contacted with the phase change heat storage material packaging shell 3-1, the second temperature sensing probe 2-3 is positioned on one side of the 2 nd power battery 1-2, which is contacted with the phase change material 3-2, and the data acquisition ends of the first temperature sensing probe 2-2 and the second temperature sensing probe 2-3 are connected with the temperature signal reading device 2-1; the phase change material 3-2 is packaged in a plurality of groups of phase change material packaging shells 3-1 which are arranged in parallel; a plurality of groups of connector lugs of a heat release circuit positive electrode connecting wire 4-3 and a heat release circuit negative electrode connecting wire 4-4 are respectively inserted into the phase change material 3-2, the other end of the heat release circuit positive electrode connecting wire 4-3 is connected with the positive electrode of a heat release control battery 4-1, the negative electrode of the heat release control battery 4-1 is connected with one end of a heat release control switch 4-2, and the other end of the heat release control switch 4-2 is connected with the heat release circuit negative electrode connecting wire 4-4 to form a loop; the liquid cooling liquid inlet channel 5-1 and the liquid cooling liquid return channel 5-2 are respectively positioned at the left side and the right side of the power battery 1 and the phase change heat storage unit 3, the liquid cooling liquid inlet pipeline 5-3 is positioned at the front end of the liquid cooling liquid inlet channel 5-1, and the liquid cooling liquid return pipeline 5-4 is positioned at the front end of the liquid cooling liquid return channel 5-2; the upper end and the lower end of the power battery pack 1 and the phase change heat storage unit 3 are respectively sealed by an upper cover plate 6-1 and a lower cover plate 6-2.
Example (b): when the electric vehicle runs in summer, the ambient temperature is high, part of heat generated in the running process of the electric vehicle is absorbed by the phase-change material 3-2, if the electric vehicle runs for a long distance and releases more heat, and the phase-change material is difficult to continuously absorb the heat of the power battery, the temperature of the phase-change material rises along with the heat, the first temperature sensing probe 2-2 and the second temperature sensing probe 2-3 are used for monitoring the temperature of five different measuring points on the wall surface of the power battery, if the average value of the temperatures exceeds the alarm temperature by 50 ℃, a signal is sent to a liquid cooling system, the refrigerant liquid is controlled to flow into a liquid inlet channel 5-1 from a liquid inlet pipeline 5-3, the refrigerant liquid flows into a liquid return channel 5-2 along an interlayer of the power battery pack 1 and the phase-change material packaging shell 3-1, in the process, the cooling of the power battery is realized, and the refrigerant liquid flows back to the, completing the heat exchange cycle. When the electric automobile stops running, the power battery does not release heat any more, the temperature of the power battery is gradually reduced, when the temperature sensor detects that the evaluation temperature of the power battery is lower than 30 ℃, a signal is sent to the phase-change material heat release switch to connect the switch, and under the action of potential difference, the phase-change material is subjected to phase change, and the stored heat is released. When the power battery runs in winter, the heat dissipation process is the same as the summer running mode, namely the initial temperature rise of the power battery is stored by the phase change material, and when the temperature exceeds the alarm temperature, the liquid cooling working medium is involved to continue cooling. When the electric automobile stops running, the heat release of the phase change material is changed into a manual mode, even if the temperature sensor detects that the temperature of the battery is lower than the phase change temperature of the phase change material, the control switch of the heat release circuit is not switched on, the phase change material does not change phase when the ambient temperature is as low as minus 20 ℃ due to the large supercooling degree (about 50 ℃) of the phase change material, when the automobile needs to be started again to run, the phase change material is excited to change phase by manually switching on the heat release control switch, the phase change material can be heated to the phase change temperature of 30 ℃, and the heat can be used for preheating the power battery, so that the power battery reaches a proper working temperature.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. A power battery thermal management system is characterized by comprising: the system comprises a power battery pack (1), a temperature sensing unit (2), a controllable phase change heat release unit and a liquid cooling channel (5), wherein the controllable phase change heat release unit comprises a phase change heat storage unit (3) and a phase change material heat release circuit (4);
the power battery pack (1) comprises a 1 st power battery (1-1) and a 2 nd power battery (1-2), the temperature sensing unit (2) comprises a temperature signal reading device (2-1), a first temperature sensing probe (2-2) and a second temperature sensing probe (2-3), and data acquisition ends of the first temperature sensing probe (2-2) and the second temperature sensing probe (2-3) are connected with the temperature signal reading device (2-1); the phase change heat storage unit (3) comprises a plurality of groups of phase change material packaging shells (3-1) and phase change materials (3-2) which are arranged in parallel, and the phase change materials (3-2) are packaged in the phase change material packaging shells (3-1); the phase change material heat release circuit (4) comprises a heat release control battery (4-1), a heat release control switch (4-2), a heat release circuit positive connection wire (4-3) and a heat release circuit negative connection wire (4-4), one end of the heat release circuit positive connection wire (4-3) and one end of the heat release circuit negative connection wire (4-4) are inserted into the phase change heat storage material (3-2), the other end of the heat release circuit positive connection wire (4-3) is connected with the positive electrode of the heat release control battery (4-1), the negative electrode of the heat release control battery (4-1) is connected with one end of the heat release control switch (4-2), and the other end of the heat release control switch (4-2) is connected with the heat release circuit negative connection wire (4-4) to form a loop;
the liquid cooling channel (5) comprises a liquid inlet channel (5-1), a liquid return channel (5-2), a liquid inlet pipeline (5-3) and a liquid return pipeline (5-4), and the liquid inlet pipeline (5-3) is positioned at the front end of the liquid inlet channel (5-1); the liquid return pipeline (5-4) is positioned at the front end of the liquid cooling liquid return channel (5-2);
the phase change heat storage unit (3) is located between a 1 st power battery (1-1) and a 2 nd power battery (1-2), the first temperature sensing probe (2-2) is located on one side, close to the phase change heat storage unit (3), of the 1 st power battery (1-1), the second temperature sensing probe (2-3) is located on one side, close to the phase change heat storage unit (3), of the second power battery (1-2), the liquid inlet channel (5-1) and the liquid inlet pipeline (5-3) are located on one sides of the power battery (1) and the phase change heat storage unit (3), and the liquid return channel (5-2) and the liquid return pipeline (5-4) are located on the other sides of the power battery (1) and the phase change heat storage unit (3).
2. The power battery thermal management system of claim 1, further characterized by: the system further comprises a cover plate (6), wherein the cover plate (6) comprises an upper cover plate (6-1) and a lower cover plate (6-2), and the upper cover plate (6-1) and the lower cover plate (6-2) are respectively arranged at the upper end and the lower end of the power battery (1) and the phase change heat storage unit (3).
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| CN202010833640.6A CN111834704B (en) | 2020-08-18 | 2020-08-18 | Power battery thermal management system |
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| CN202010833640.6A CN111834704B (en) | 2020-08-18 | 2020-08-18 | Power battery thermal management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355053A (en) * | 2021-05-18 | 2021-09-07 | 大连理工大学 | Preparation method and application of large-supercooling-degree binary eutectic crystalline hydrated salt phase-change material |
| CN114523882A (en) * | 2022-03-21 | 2022-05-24 | 苏州赤兔驱动科技有限公司 | Multi-element high-precision lithium battery preheating system |
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