CN115172940A - Battery cooling system based on metal heat conduction particle circulation and control method - Google Patents
Battery cooling system based on metal heat conduction particle circulation and control method Download PDFInfo
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- CN115172940A CN115172940A CN202210988586.1A CN202210988586A CN115172940A CN 115172940 A CN115172940 A CN 115172940A CN 202210988586 A CN202210988586 A CN 202210988586A CN 115172940 A CN115172940 A CN 115172940A
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- 238000001816 cooling Methods 0.000 title claims abstract description 68
- 239000002245 particle Substances 0.000 title claims abstract description 62
- 239000002184 metal Substances 0.000 title claims abstract description 56
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000012782 phase change material Substances 0.000 claims abstract description 99
- 239000000110 cooling liquid Substances 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 239000002131 composite material Substances 0.000 claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 238000005054 agglomeration Methods 0.000 claims abstract description 9
- 230000002776 aggregation Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 230000007306 turnover Effects 0.000 claims description 3
- 230000001351 cycling effect Effects 0.000 claims 2
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000004062 sedimentation Methods 0.000 abstract description 5
- 239000002923 metal particle Substances 0.000 description 19
- 230000008859 change Effects 0.000 description 7
- 239000012188 paraffin wax Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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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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- 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
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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
- 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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- 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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- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a battery cooling system based on metal heat conduction particle circulation and a control method, wherein the battery cooling system comprises a cavity arranged between adjacent power batteries, the bottom of the cavity is connected with a cooling liquid channel through a liquid cooling plate, and the top of the cavity is connected with an electromagnetic plate through an upper cover; the composite phase change material filled in the cavity comprises a phase change material and metal heat conduction particles dispersed in the phase change material; the battery management system is connected with the electromagnetic plate through the magnetic field control unit, is respectively connected with the upper cover and the liquid cooling plate through the capacitance measuring unit, and is also respectively connected with the cooling liquid circulating pump, the battery temperature sensor and the phase-change material temperature sensor. Phase change materials with metal heat conduction particles are arranged in the space between the adjacent power batteries, and the electromagnetic plate at the top of the space is utilized to attract the metal heat conduction particles to be suspended in the phase change materials or move towards the electromagnetic plate by monitoring the size of the capacitor between the liquid cooling plate and the phase change material upper cover, so that sedimentation is avoided, and the magnetic field is reversed by changing the current direction of the electromagnetic plate to prevent agglomeration.
Description
Technical Field
The invention relates to the technical field of energy storage battery thermal management, in particular to a battery cooling system based on metal heat conduction particle circulation and a control method.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
With the increasing of the energy density of the power battery, the heat generation amount in the charging and discharging process of the power battery also increases, and in the prior art, the phase-change material is used as a cooling medium, and the latent heat of the phase-change material is utilized to absorb the waste heat of the battery, so that the stable operation of the battery is ensured.
Taking paraffin as an example, the paraffin as a phase change material is mainly restricted by two problems, namely poor heat conduction performance and poor cycle performance, only one round of heat absorption can be performed, and when the paraffin is completely melted, the latent heat advantage can be recovered for a long time. In order to improve the thermal conductivity of paraffin, composite phase change materials with higher thermal conductivity are prepared by adding high-thermal-conductivity nano metal particles into the paraffin at present, and in order to improve the heat storage capacity of the composite phase change materials at continuous high temperature, the composite phase change materials are coupled with a liquid cooling mode to form a more efficient and stable heat dissipation system.
However, with the use of the battery, after the composite phase change material with the metal heat conduction particles undergoes multiple phase change cycles, the metal particles aggregate and settle, so that the heat conduction performance of the composite phase change material deteriorates, and the heat conduction capability is lost.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a battery cooling system based on metal heat conducting particle circulation and a control method, and solves the problems of insufficient exposed heat conductivity and heat conducting particle sedimentation and agglomeration when a phase-change material is applied to battery heat management, so that quick, efficient, uniform and stable heat dissipation in a battery box is realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
a first aspect of the present invention provides a battery cooling system based on metal thermally conductive particle circulation, comprising:
the cavity is arranged between adjacent power batteries, the bottom of the cavity is connected with the cooling liquid channel through the liquid cooling plate, and the top of the cavity is connected with the electromagnetic plate through the upper cover;
the composite phase-change material is filled in the cavity and comprises the phase-change material and metal heat-conducting particles dispersed in the phase-change material;
the battery management system is connected with the electromagnetic plate through the magnetic field control unit, is respectively connected with the upper cover and the liquid cooling plate through the capacitance measuring unit, and is also respectively connected with the cooling liquid circulating pump, the battery temperature sensor and the phase-change material temperature sensor.
The cooling liquid channel is respectively connected with a cooling liquid circulating pump and a cooling liquid storage tank through pipelines, and the cooling liquid circulating pump is connected with the cooling liquid storage tank through a radiator through a pipeline.
The metal heat conducting particles have different particle sizes.
The upper cover and the liquid cooling plate are both made of metal, the phase change material is heated and melted and then located between the upper cover and the liquid cooling plate to form a capacitor structure, and the capacitor measuring unit obtains a capacitance value between the upper cover and the liquid cooling plate.
The battery temperature sensor is connected to the power battery, and the phase-change material temperature sensor is connected to the cavity and is in contact with the phase-change material to acquire the temperature of the phase-change material.
The power battery has at least one group, and multiunit power battery holds in the battery can body, forms the power battery group and provides the electric energy for the load.
The cooling liquid channel and the liquid cooling plate are both located at the bottom of the battery shell, and the composite phase change material receives heat of the power battery and transmits the heat to a medium in the cooling liquid channel through the liquid cooling plate.
The electromagnetic plate is connected with the battery management system through the magnetic field control unit to form an electromagnetic control module, and magnetic force is generated on the metal heat conduction particles through controlling the generated magnetic field to attract the metal heat conduction particles to suspend or move in the phase change material.
The capacitance measuring unit is connected with the battery management system to form a capacitance detection module, and the electromagnetic control module controls the magnetic field intensity generated by the electromagnetic plate according to the capacitance value obtained by the capacitance detection module, so as to control the metal heat conduction particles to move or suspend in the phase change material.
A second aspect of the present invention provides a control method of the above battery cooling system, including the steps of:
the battery management system acquires the temperature of the power battery, the temperature of the composite phase change material in the cavity and the capacitance value between the upper cover and the liquid cooling plate;
when the temperature of the power battery exceeds a set range or the temperature difference between the power battery and the composite phase-change material exceeds a set range, the battery management system controls the cooling liquid circulating pump to start and starts a forced cooling loop;
the battery management system controls the current of the electromagnetic plate according to the capacitance value between the upper cover and the liquid cooling plate, changes the magnetic force generated by the electromagnetic plate on the metal heat conduction particles, and attracts the metal heat conduction particles to suspend or move in the phase change material;
the battery management system changes the current direction of the electromagnetic plate according to a set period, controls the metal heat conduction particles to turn over in the phase change material, and enables the magnetic field to be reversed and mutually exclusive to prevent agglomeration.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
1. phase change materials with metal heat conduction particles are arranged in the space between the adjacent power batteries, the size of the capacitor between the liquid cooling plate and the phase change material upper cover is monitored, the electromagnetic plate at the top of the space is utilized to attract the metal heat conduction particles to be suspended in the phase change materials or move towards the electromagnetic plate, so that sedimentation is avoided, and the magnetic field is reversed to prevent agglomeration by changing the current direction of the electromagnetic plate.
2. The battery is cooled by adopting the composite phase-change material, so that the temperature uniformity of the battery in the battery pack is improved, the energy storage and heat absorption effects of the phase-change material enable the battery to be maintained at a certain temperature when the discharge intensity of the battery is low, and the cooling liquid is required to carry heat when the heat dissipation capacity of the battery is large, so that the energy consumption is reduced; the circulation of the heat-conducting metal particles enables the composite phase change to still keep good heat conductivity after multiple phase change cycles, and the latent heat advantage can be recovered in a short time by adjusting the cooling strength of the cold plate, so that the battery can be maintained in an ideal temperature range when working in a cold region and a hot region, the energy is saved, and the performance of the battery is improved.
3. The problem that the maximum temperature and the maximum temperature difference are too large when the battery works is restricted by a long-term and efficient means, the heat exchange rate of the battery is remarkably improved by adding the heat conduction particles, and the capacitance detection device and the electromagnetic module under the control of the battery management system can monitor the performance attenuation condition of the composite phase change material and timely perform particle circulation adjustment, so that the long-term stability and high efficiency of the performance of the battery are ensured.
4. The system is simple in structure, easy to assemble and disassemble, capable of achieving more efficient battery heat management without remarkably increasing the volume of the battery box and the energy consumption of the system, capable of dynamically adjusting according to the working temperature requirement of the battery pack and a technical scheme integrating efficiency, reliability and flexibility.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a battery cooling system according to one or more embodiments of the present invention;
in the figure: the battery pack cooling liquid cooling system comprises a battery pack cooling liquid channel 1, a liquid cooling plate 2, a phase change material 3, heat conducting metal particles 4, a power battery 5, a battery pack shell 6, a cooling liquid circulating pump 7, a cooling liquid circulating pipeline 8, a radiator 9, a cooling liquid storage tank 10, a battery management system 11, a magnetic field control unit 12, a capacitance measuring unit 13, a phase change material temperature sensor 14, a battery temperature sensor 15, a phase change material upper cover 16, a battery equalizer 17 and an electromagnetic plate 18.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, with the use of the battery, after the composite phase change material with the metal heat conducting particles undergoes multiple phase change cycles, the metal particles may undergo an agglomeration and sedimentation phenomenon, which deteriorates the heat conducting performance of the composite phase change material, thereby losing the heat conducting capability.
Therefore, the following embodiments provide a battery cooling system and a control method based on metal heat conduction particle circulation, wherein a phase-change material with metal heat conduction particles is arranged in a space between adjacent power batteries, and an electromagnetic plate at the top of the space is used for attracting the metal heat conduction particles to suspend in the phase-change material or move towards the electromagnetic plate by monitoring the capacitance between a liquid cooling plate and a phase-change material upper cover, so that sedimentation is avoided, and a magnetic field is reversed by changing the current direction of the electromagnetic plate to prevent agglomeration.
The first embodiment is as follows:
as shown in fig. 1, the battery cooling system based on the circulation of the metal heat conductive particles includes:
the cavity is arranged between adjacent power batteries, the bottom of the cavity is connected with the cooling liquid channel through the liquid cooling plate, and the top of the cavity is connected with the electromagnetic plate through the upper cover;
the composite phase change material is filled in the cavity and comprises the phase change material and metal heat conduction particles dispersed in the phase change material;
the battery management system is connected with the electromagnetic plate through the magnetic field control unit, is respectively connected with the upper cover and the liquid cooling plate through the capacitance measuring unit, and is also respectively connected with the cooling liquid circulating pump, the battery temperature sensor and the phase-change material temperature sensor.
The cooling liquid channel is respectively connected with a cooling liquid circulating pump and a cooling liquid storage tank through pipelines, and the cooling liquid circulating pump is connected with the cooling liquid storage tank through a radiator through a pipeline.
The metal heat conducting particles have different particle sizes.
The upper cover and the liquid cooling plate are both made of metal, the phase change material is heated and melted and then located between the upper cover and the liquid cooling plate to form a capacitor structure, and the capacitor measuring unit obtains a capacitance value between the upper cover and the liquid cooling plate.
The battery temperature sensor is connected to the power battery, and the phase-change material temperature sensor is connected to the cavity.
The power battery has at least one group, and multiunit power battery holds in the battery can body, forms the power battery group and provides the electric energy for the load.
The cooling liquid channel and the liquid cooling plate are both located at the bottom of the battery shell, and the composite phase change material receives heat of the power battery and transmits the heat to a medium in the cooling liquid channel through the liquid cooling plate.
The electromagnetic plate is connected with the battery management system through the magnetic field control unit to form an electromagnetic control module, and magnetic force is generated on the metal heat conduction particles through controlling the generated magnetic field to attract the metal heat conduction particles to suspend or move in the phase change material.
The capacitance measuring unit is connected with the battery management system to form a capacitance detection module, and the electromagnetic control module controls the magnetic field intensity generated by the electromagnetic plate according to the capacitance value acquired by the capacitance detection module and controls the metal heat conduction particles to move or suspend in the phase change material.
The multiple groups of power batteries are connected with a battery equalizer, the battery equalizer is connected with a battery management system, and the battery management system controls the charging and discharging processes of the power batteries through the battery equalizer.
Specifically, the method comprises the following steps:
the system comprises a power battery pack, a composite phase-change material, an electromagnetic control module, a capacitance detection module, a Battery Management System (BMS) and a cooling liquid circulation module.
The power battery pack comprises a plurality of power batteries (5) and a battery pack shell (6) and provides electric energy for loads.
The cavity is a closed space, the composite phase-change material filled in the cavity comprises a phase-change material (3) and metal heat-conducting particles (4) dispersed in the phase-change material, the heat in the charging/discharging process of the battery is absorbed to prevent the battery from being overheated, and certain energy is stored, so that the battery can keep a certain temperature when working in a cold region.
The electromagnetic control module comprises a magnetic field control unit (13) and an electromagnetic plate (18), wherein coils are arranged in the electromagnetic plate, a magnetic field is generated under the control of a Battery Management System (BMS), and the strength of the magnetic field and the polarity of the magnetic poles of the electromagnetic plate are controlled according to requirements.
The capacitance detection module is used for monitoring the capacitance between the liquid cooling plate (2) and the phase change material upper cover (16) and transmitting the capacitance to the battery management system (11).
The cooling liquid circulation module comprises a battery pack cooling liquid channel (1), a liquid cooling plate (2), a cooling liquid circulation pump (7), a cooling liquid circulation pipeline (8), a radiator (9) and a cooling liquid storage tank (10), and the heat of the phase-change material transferred to the cooling plate is taken away according to the circulation of cooling liquid and the heat radiation intensity of the radiator controlled by the instruction of the battery management system.
The battery management system controls the charging and discharging process of the battery through a battery equalizer (17), collects the electric capacities of a phase-change material temperature sensor (14), a battery temperature sensor (15) and a capacitance measuring unit (13), and adjusts the electromagnetic field intensity, the magnetic pole direction, the flow rate of cooling liquid and the like, so that the temperature of the battery is always kept in a certain range in the working process.
The composite phase change material of the cooling system is preferably paraffin wax as a pure phase change material substrate, but is not limited to other materials, wherein magnetizable metal particles such as copper, iron, cobalt, nickel and the like are added, the particle sizes of the metal particles added in the composite phase change material are different, and the composite phase change material is prepared into the required composite phase change material.
When the battery operates at low multiplying power, the system can absorb the heat discharged by the battery by means of the latent heat of the composite phase change material, and the composite phase change material has high thermal conductivity and high latent heat, so that the good working temperature and temperature uniformity of the battery can be guaranteed under the working condition.
The battery temperature sensors are arranged at the same positions on the surfaces of the single batteries and are connected with the BMS integrated unit of the battery management system through a battery equalizer, the phase change material temperature sensors are arranged in the phase change material and are directly connected with the BMS integrated unit, and the temperature in the battery box is monitored by the BMS in real time. The battery management system BMS may adjust the opening and closing of the coolant circuit by monitoring temperature signals output from the battery temperature sensor and the phase change material temperature sensor. When the temperature range of the battery or the temperature difference between the battery and the phase-change material exceeds the allowable range, the BMS rapidly sends a signal to the cooling circulation module, the cooling liquid circulation pump is switched on, and the forced cooling loop is started to perform enhanced heat dissipation on the battery pack. The method can effectively monitor the running condition of the battery, and avoid the phenomenon that the battery is damaged and even has safety problems due to heat accumulation in the battery box under the condition of large load of the battery or abnormal heat generation.
The circuit is led out on the upper cover of the metallic phase-change material and the liquid cooling plate and is connected to the capacitance measuring unit, the capacitance measuring unit is connected with the BMS integrated unit, the upper cover and the liquid cooling plate are both metal plates, the non-conductive composite phase-change material is clamped between the two metal plates to form a capacitor, when voltage is applied between the upper plate and the lower plate, the capacitor stores charges, the capacitance value is fed back to the capacitance measuring unit, the capacitance value displayed by the capacitor is different due to the change of the type, the particle size and the distribution condition of metal particles mixed in the paraffin substrate, and the BMS can output an instruction to the magnetic field control unit by monitoring the signal of the capacitance measuring unit, switch on or switch off the electromagnetic plate and determine the capacitance value range of the composite phase-change material under normal work according to requirements.
Along with the use of group battery, compound phase change material is after going through many times to melt-solidify the circulation, nanometer metal particle wherein can produce the settlement phenomenon, lead to the capacitance value to change, when BMS monitored its capacitance value and surpassed normal operating range, BMS sends the instruction to magnetic field control unit, switch on the electromagnetic plate and form the magnetic field of certain intensity, because the difference of metal ion's particle diameter, the particle can receive different magnetic attraction and move towards the direction that is close to the electromagnetic plate, then can produce dispersed concentration gradient in phase change material, break off the electromagnetic plate after the capacitor resumes ideal capacitance value, compound phase change material performance can resume.
In order to prevent the heat-conducting metal particles from being agglomerated after being magnetized, a battery management system changes the direction of coil current in an electromagnetic plate according to a set period, magnetic field commutation is carried out, the heat-conducting metal particles with different sizes are turned over in a phase-change material, the heat-conducting metal particles also have the bipolar characteristic after being magnetized, when the magnetic field is commutated, the heat-conducting metal particles dispersed in the phase-change material are influenced by the magnetic field commutation and show turning trend and action, the resistance of the heat-conducting metal particles with different sizes is different when the heat-conducting metal particles act, the turning speed of the heat-conducting metal particles is different, the difference of the turning speed can enable the magnetic pole directions of the heat-conducting metal particles to change asynchronously, and the phenomenon of mutual repulsion occurs, therefore, the agglomeration of the heat-conducting metal particles can be prevented under the condition that the magnetic field direction is changed periodically according to the distribution condition of the particle sizes in the heat-conducting metal particles.
Example two:
the control method of the system comprises the following steps:
the battery management system acquires the temperature of the power battery, the temperature of the composite phase change material in the cavity and the capacitance value between the upper cover and the liquid cooling plate;
when the temperature of the power battery exceeds a set range or the temperature difference between the power battery and the composite phase-change material exceeds a set range, the battery management system controls the cooling liquid circulating pump to start and starts a forced cooling loop;
the battery management system controls the current of the electromagnetic plate according to the capacitance value between the upper cover and the liquid cooling plate, changes the magnetic force of the electromagnetic plate on the metal heat conduction particles, and attracts the metal heat conduction particles to suspend or move in the phase change material;
the battery management system changes the current direction of the electromagnetic plate according to a set period, controls the metal heat conduction particles to turn over in the phase change material, and enables the magnetic field to be reversed and mutually exclusive to prevent agglomeration.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Battery cooling system based on metal heat conduction particle circulation, its characterized in that: the method comprises the following steps:
the cavity is arranged between adjacent power batteries, the bottom of the cavity is connected with the cooling liquid channel through the liquid cooling plate, and the top of the cavity is connected with the electromagnetic plate through the upper cover;
the composite phase-change material is filled in the cavity and comprises the phase-change material and metal heat-conducting particles dispersed in the phase-change material;
the battery management system is connected with the electromagnetic plate through the magnetic field control unit, is respectively connected with the upper cover and the liquid cooling plate through the capacitance measuring unit, and is also respectively connected with the cooling liquid circulating pump, the battery temperature sensor and the phase-change material temperature sensor.
2. The battery cooling system based on metal heat conducting particle circulation according to claim 1, wherein: the electromagnetic plate is connected with the battery management system through the magnetic field control unit to form an electromagnetic control module, and magnetic force is generated on the metal heat conduction particles through controlling the generated magnetic field to attract the metal heat conduction particles to suspend or move in the phase change material.
3. The battery cooling system based on metal heat conducting particle circulation according to claim 1, wherein: the capacitance measuring unit is connected with the battery management system to form a capacitance detection module, and the electromagnetic control module controls the magnetic field intensity generated by the electromagnetic plate according to the capacitance value acquired by the capacitance detection module and controls the metal heat conduction particles to move or suspend in the phase change material.
4. The battery cooling system based on metal heat conducting particle circulation according to claim 1, wherein: the cooling liquid channel is respectively connected with a cooling liquid circulating pump and a cooling liquid storage tank through pipelines, and the cooling liquid circulating pump is connected with the cooling liquid storage tank through a radiator through a pipeline.
5. The battery cooling system based on metal heat conducting particle circulation according to claim 4, wherein: the cooling liquid channel and the liquid cooling plate are both located at the bottom of the battery shell, and the composite phase change material receives heat of the power battery and transmits the heat to a medium in the cooling liquid channel through the liquid cooling plate.
6. The battery cooling system based on metal heat conducting particle circulation according to claim 1, wherein: the metal heat conducting particles have different particle sizes.
7. The battery cooling system based on metal heat conducting particle circulation according to claim 1, wherein: the upper cover and the liquid cooling plate are both made of metal, the phase change material is heated and melted and then located between the upper cover and the liquid cooling plate to form a capacitor structure, and the capacitor measuring unit obtains a capacitance value between the upper cover and the liquid cooling plate.
8. The metal thermally conductive particle cycling-based battery cooling system according to claim 1, wherein: the battery temperature sensor is connected to the power battery, and the phase-change material temperature sensor is connected to the cavity and is in contact with the phase-change material to obtain the temperature of the phase-change material.
9. The metal thermally conductive particle cycling-based battery cooling system according to claim 1, wherein: the power battery is provided with at least one group, and a plurality of groups of power batteries are accommodated in the battery enclosure body to form a power battery group for providing electric energy for a load.
10. A control method of a battery cooling system according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
the battery management system acquires the temperature of the power battery, the temperature of the composite phase change material in the cavity and the capacitance value between the upper cover and the liquid cooling plate;
when the temperature of the power battery exceeds a set range or the temperature difference between the power battery and the composite phase-change material exceeds a set range, the battery management system controls the cooling liquid circulating pump to start and starts a forced cooling loop;
the battery management system controls the current of the electromagnetic plate according to the capacitance value between the upper cover and the liquid cooling plate, changes the magnetic force of the electromagnetic plate on the metal heat conduction particles, and attracts the metal heat conduction particles to suspend or move in the phase change material;
the battery management system changes the current direction of the electromagnetic plate according to a set period, controls the metal heat conduction particles to turn over in the phase change material, and enables the magnetic field to be reversed and mutually exclusive to prevent agglomeration.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110167838A1 (en) * | 2008-07-09 | 2011-07-14 | Reinhold Danner | Device and Method for Cooling Components Using Magnetizable Phase-Change Material |
| CN102664292A (en) * | 2012-05-22 | 2012-09-12 | 上海电力学院 | Radiating and cooling device for power battery |
| US20150104678A1 (en) * | 2013-10-14 | 2015-04-16 | Hyundai Motor Company | Structure for power electronic parts housing of vehicle |
| CN110289460A (en) * | 2019-05-13 | 2019-09-27 | 江苏大学 | A kind of power battery thermal management system |
| KR20200011787A (en) * | 2018-07-25 | 2020-02-04 | 현대자동차주식회사 | Cooling apparatus of battery for electric vehicles |
| CN210403966U (en) * | 2019-06-26 | 2020-04-24 | 南昌大学 | Novel battery pack thermal management system based on square battery |
| CN111129653A (en) * | 2020-01-16 | 2020-05-08 | 西安交通大学 | Liquid cooling assisted phase-change material heat exchange battery thermal management system |
-
2022
- 2022-08-17 CN CN202210988586.1A patent/CN115172940B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110167838A1 (en) * | 2008-07-09 | 2011-07-14 | Reinhold Danner | Device and Method for Cooling Components Using Magnetizable Phase-Change Material |
| CN102664292A (en) * | 2012-05-22 | 2012-09-12 | 上海电力学院 | Radiating and cooling device for power battery |
| US20150104678A1 (en) * | 2013-10-14 | 2015-04-16 | Hyundai Motor Company | Structure for power electronic parts housing of vehicle |
| KR20200011787A (en) * | 2018-07-25 | 2020-02-04 | 현대자동차주식회사 | Cooling apparatus of battery for electric vehicles |
| CN110289460A (en) * | 2019-05-13 | 2019-09-27 | 江苏大学 | A kind of power battery thermal management system |
| CN210403966U (en) * | 2019-06-26 | 2020-04-24 | 南昌大学 | Novel battery pack thermal management system based on square battery |
| CN111129653A (en) * | 2020-01-16 | 2020-05-08 | 西安交通大学 | Liquid cooling assisted phase-change material heat exchange battery thermal management system |
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