CN114497812B - Power battery thermal management system based on multi-mode coupling and control method - Google Patents
Power battery thermal management system based on multi-mode coupling and control method Download PDFInfo
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- CN114497812B CN114497812B CN202210152769.XA CN202210152769A CN114497812B CN 114497812 B CN114497812 B CN 114497812B CN 202210152769 A CN202210152769 A CN 202210152769A CN 114497812 B CN114497812 B CN 114497812B
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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
- H01M10/61—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
- H01M10/61—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
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
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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
- H01M10/6554—Rods or plates
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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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention belongs to the technical field of power battery thermal management, and provides a power battery thermal management system based on multi-mode coupling and a control method thereof, wherein the power battery thermal management system comprises an injection circulation device, an energy storage device, a heating and radiating device and a control device; the injection circulation device comprises a coupling injector, a gas phase chamber, a heating circulation one-way valve and a two-way circulation pump which are sequentially communicated, wherein a heat dissipation circulation one-way valve is connected in parallel on the heating circulation one-way valve, the conduction direction of the heating circulation one-way valve is opposite to that of the heat dissipation circulation one-way valve, and a gas temperature sensor and a gas pressure sensor are arranged on the outer wall of the gas phase chamber; an energy storage temperature sensor is arranged on the outer wall of the energy storage device; the heating and radiating device is communicated with the bidirectional circulating pump through the energy storage device; the control device is respectively and electrically connected with the heating circulation check valve, the heat dissipation circulation check valve, the bidirectional circulating pump, the gas temperature sensor, the gas pressure sensor and the energy storage temperature sensor.
Description
Technical Field
The disclosure belongs to the technical field of power battery thermal management, and particularly relates to a power battery thermal management system based on multi-mode coupling and a control method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Battery thermal management is an important factor affecting battery life, capacity, endurance mileage and safety of battery automobiles. In order to operate the battery within a reasonable temperature range, the battery thermal management system includes heat dissipation, heating, and thermal insulation of the battery. The existing battery thermal management system adopts the cooling modes of air cooling, water cooling, direct cooling and the like to solve the problem of poor cooling uniformity, adopts the cooling mode of a phase change material heating pipe to solve the problem that the phase change material has poor heat conductivity and cannot meet the requirement of the high heat dissipation working condition of the battery; particularly, when the electric vehicle runs in a cold region, a large amount of electric energy is consumed by heating the battery in order to enable the battery to work in a proper temperature range; after a period of time, the battery is too low in temperature, so that the capacity is obviously reduced, and the normal practicability of the electric vehicle is affected.
Disclosure of Invention
In order to solve the problems, the present disclosure provides a power battery thermal management system and a control method based on multi-mode coupling, which utilize a battery heat dissipation and heating and heat preservation management system and a control strategy of multi-mode coupling in a power battery of a new energy automobile, and solve the problems of poor cooling uniformity, high energy consumption of the thermal management system and excessively low temperature performance of a running battery in a cold region of the existing power battery thermal management system.
According to some embodiments, a first aspect of the present disclosure provides a power battery thermal management system based on multimode coupling, which adopts the following technical scheme:
The power battery thermal management system based on multi-mode coupling comprises an injection circulation device, an energy storage device, a heating and radiating device and a control device;
The injection circulation device comprises a coupling injector, a gas phase chamber, a heating circulation one-way valve and a two-way circulation pump which are sequentially communicated, wherein the heating circulation one-way valve is connected with a heat dissipation circulation one-way valve in parallel, the conduction direction of the heating circulation one-way valve and the heat dissipation circulation one-way valve is opposite, and a gas temperature sensor and a gas pressure sensor are arranged on the outer wall of the gas phase chamber;
an energy storage temperature sensor is arranged on the outer wall of the energy storage device;
The heating and radiating device is communicated with the bidirectional circulating pump through the energy storage device;
the control device is respectively and electrically connected with the heating circulation check valve, the heat dissipation circulation check valve, the bidirectional circulating pump, the gas temperature sensor, the gas pressure sensor and the energy storage temperature sensor.
As a further technical definition, the energy storage device includes an energy storage tank body, and an energy storage material and a heat exchange tube disposed in the energy storage tank body.
As a further technical limitation, the power battery thermal management system based on multimode coupling further comprises a battery pack with a battery box body, a multi-cavity cold plate, a power battery and a refrigerant.
Further, the multi-cavity cold plate close to the end of the coupling ejector is communicated with the coupling ejector through a gas collecting thin pipe.
Further, one end of the energy storage device is communicated with the two-way circulating pump, and the other end of the energy storage device is communicated with a three-way valve in the heating and radiating device.
Further, the heating and radiating device further comprises a heating circulation pipeline and a radiator.
Further, a first interface of the three-way valve is communicated with the heating and radiating device, and a second interface of the three-way valve is communicated with the multi-cavity cold plate through a heating circulation pipeline; and the third interface of the three-way valve is communicated with one end of the radiator.
Further, a valve is arranged on a pipeline between one end of the radiator far away from the third interface of the three-way valve and the multi-cavity cold plate.
Further, the valve and the power battery are electrically connected with the control device.
According to some embodiments, a second aspect of the present disclosure provides a power battery thermal management control method based on multimode coupling, which adopts the power battery thermal management system based on multimode coupling provided in the first aspect, and adopts the following technical scheme:
A power battery thermal management control method based on multi-mode coupling comprises two states of a power battery operation process and a power battery standing process;
In the running process, heat released by the power battery sequentially enters a multi-cavity cold plate, a gas collecting tubule, a coupling ejector, a gas phase chamber, a heat exchange pipe and an energy storage material, and the heat is stored or dissipated under the action of a gas pressure sensor, an energy storage temperature sensor and a control device;
and in the standing state, the circulation of heat is realized under the action of a gas temperature sensor, an energy storage temperature sensor and a control device.
Compared with the prior art, the beneficial effects of the present disclosure are:
because the temperature of the liquid refrigerant is only related to the saturation pressure, the temperature uniformity of the multi-cavity cold plate is ensured, when the heat dissipation capacity of one battery is larger than that of other batteries, the evaporation capacity in the cold plate contacted with the battery is increased, the cold plate is maintained to be at a certain temperature, and the uniformity of the temperature of the battery is ensured. The energy storage materials in the energy storage box can be flexibly selected, the position and the size of the energy storage box can be flexibly arranged, so that the heat released by the storage battery is recovered and stored when the electric vehicle runs in a cold region, the heat is recycled in the heat preservation and heating processes of the battery, the total energy utilization rate of the power battery is improved, the battery is prevented from being overheated and supercooled, the battery works in an ideal temperature range when the electric vehicle runs under severe conditions of a hot region and a cold region, and the performance of the power battery is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain the disclosure, and do not constitute an undue limitation on the disclosure.
FIG. 1 is a schematic diagram of a power cell thermal management system based on multi-mode coupling in accordance with a first embodiment of the present disclosure;
the solar energy heat collection device comprises a battery box body 1, a multi-cavity cold plate 2, a power battery 3, a power battery 4, a refrigerant 5, a valve 6, a heating circulation pipeline 7, a radiator 8, a three-way valve 9, an energy storage box body 10, an energy storage material 11, a heat exchange tube 12, an energy storage temperature sensor 13, a controller 14, a two-way circulation pump 15, a heating circulation check valve 16, a heat dissipation circulation check valve 17, a gas temperature sensor 18, a gas pressure sensor 19, a gas phase chamber 20, a coupling ejector 21 and a gas collection tubule.
Detailed Description
The disclosure is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present disclosure. 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 disclosure 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 in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.
Example 1
An embodiment of the disclosure introduces a power battery thermal management system based on multimode coupling.
The power battery thermal management system based on multi-mode coupling shown in fig. 1 comprises a battery pack, an injection circulation device, an energy storage device, a heating and radiating device and a control device, and specifically comprises a battery box body 1, a multi-cavity cold plate 2, a power battery 3, a refrigerant 4, a valve 5, a heating circulation pipeline 6, a radiator 7, a three-way valve 8, an energy storage box body 9, an energy storage material 10, a heat exchange tube 11, an energy storage temperature sensor 12, a controller 13, a bidirectional circulation pump 14, a heating circulation one-way valve 15, a radiating circulation one-way valve 16, a gas temperature sensor 17, a gas pressure sensor 18, a gas phase chamber 19, a coupling injector 20 and a gas collecting tubule 21.
As one or more embodiments, the battery pack is used for heat dissipation of the power battery or heating and heat preservation of the power battery after the vehicle stops in a cold area, and structurally comprises a battery box body 1, a multi-cavity cold plate 2 arranged inside the battery box body 1, the power battery 3 and a refrigerant 4, wherein the refrigerant 4 is distributed in the multi-cavity cold plate 2 in a liquid state.
As one or more embodiments, the injection circulation device is used for realizing bidirectional automatic circulation of the heat dissipation system to reduce energy consumption when the cooling working condition is commonly used and the cold region is insulated, and ensuring heat dissipation capacity by forced circulation when the heat dissipation capacity is large; the injection circulation device structurally comprises an energy storage temperature sensor 12, a two-way circulation pump 14, a heating circulation check valve 15, a heat dissipation circulation check valve 16, a gas temperature sensor 17, a gas pressure sensor 18, a gas phase chamber 19, a coupling injector 20 and a gas collecting thin pipe 21.
As one or more embodiments, the energy storage device is used for storing heat emitted in the exothermic process of the battery and providing heat for heat preservation of the battery in cold areas; the energy storage device structurally comprises an energy storage box body 9, an energy storage material 10 and a heat exchange tube 11.
As one or more embodiments, the heating radiator is used for dissipating heat generated by the battery when energy storage is not needed or the energy storage device is saturated, and preventing the heat from dissipating through the straight pipeline in the heating cycle; the heating and radiating device structurally comprises a heating circulation pipeline 6, a radiator 7 and a three-way valve 8.
In the present embodiment, the three-way valve 8 is an electronically controlled three-way valve.
As one or more embodiments, the control device is used for controlling the cooling and heating intensity according to the working condition and the ambient temperature of the battery of the vehicle; the controller 13 is provided in the control device.
Example two
The second embodiment of the disclosure introduces a control method of a power battery thermal management system based on multimode coupling, and the power battery thermal management system based on multimode coupling described in the first embodiment is adopted.
A power battery thermal management control method based on multi-mode coupling comprises two states of a power battery operation process and a power battery standing process;
In the running process, heat released by the power battery sequentially enters a multi-cavity cold plate, a gas collecting tubule, a coupling ejector and a gas phase chamber, and heat is stored or dissipated under the action of a gas pressure sensor, an energy storage temperature sensor and a control device;
and in the standing state, the circulation of heat is realized under the action of a gas temperature sensor, an energy storage temperature sensor and a control device.
The specific process is as follows:
In the running process of the vehicle, the heat of the battery releases heat, the heat of the heat dissipation is transferred to the multi-cavity cold plate, the refrigerant in the multi-cavity cold plate absorbs the heat transferred to enable the multi-cavity cold plate to be maintained in a certain temperature range, the refrigerant absorbs heat and evaporates to be changed into a gas phase component, the gas collecting tubule arranged on the multi-cavity cold plate is firstly coupled with the ejector to flow, the ejector is coupled to accelerate and then enters the gas phase chamber, when the pressure exceeds the set pressure of the heat dissipation circulation check valve 16, the circulating pump is not started, the heat flows through the bidirectional circulating pump, and enters the heat exchange tube in the energy storage box, the heat in the refrigerant is transferred and stored by the energy storage material firstly, so that the heat of the heat is not transferred or when the energy storage material stores energy and is saturated, the gas phase or part of liquefied refrigerant flows through the radiator to dissipate the redundant heat, and is cooled and depressurized to be liquid phase and flow back to the lower end of the multi-cavity cold plate, and the purpose of heat dissipation of the battery is continuously circulated. When the temperature of the battery is kept within a certain range and the vehicle stops, the positive circulation of the heat dissipation process is finished when the temperature of the refrigerant in the battery box is reduced to a certain range, at the moment, the pressure of the refrigerant is increased due to higher temperature in the energy storage box, and the refrigerant takes away heat from the energy storage material under the action of temperature difference to circulate the battery box, so that the battery box is maintained within a certain range and supercooling of the battery is prevented.
In order to enable the system to operate with high efficiency and low energy consumption, a coupling ejector 20 is arranged in a circulating system, a plurality of gas collecting tubules are linked by a multi-cavity cold plate between different batteries, the gas collecting pipe is connected with the coupling ejector, and when the flow rate of a gas-phase refrigerant of one gas collecting tubule is increased, the function of the coupling ejector can reduce the pressure close to the outlet of the gas collecting pipe, promote the evaporation of the refrigerant, provide a disturbance source and increase the automatic circulating capacity of the system; the pressure of the heating circulation check valve 15 can be adjusted, the pressure of the gas phase component is changed according to the ambient temperature, the working temperature of the battery and the cooling requirement of the battery, a circulation pump is not required to be started for automatic circulation of the system when the ambient temperature is low or the cooling requirement of the battery is low, and when the ambient temperature is high or the cooling requirement of the battery is high, the requirement of automatic circulation cannot be met, and the bidirectional circulation pump is started for forward circulation, so that the cooling requirement can be met when the vehicle works in a high-temperature environment; the heat dissipation circulation check valve 16 controls the heat flow rate of the heat stored in the energy storage box for heating or preserving heat of the battery, and after the cold region is stopped, the system automatically circulates under the action of the temperature difference energy, and a bidirectional circulating pump is started for reverse circulation when the battery is required to be heated, so that the heat transfer quantity of the energy storage device to the battery box can be increased, and the temperature rising rate is accelerated; the electronic control three-way valve controls the flow direction of the refrigerant after passing through the energy storage box, and in the heat dissipation forward circulation process, the gas-phase refrigerant passes through the radiator, and the refrigerant in the heat preservation or heating circulation is circulated through the heating circulation pipeline to prevent heat dissipation.
The foregoing description of the preferred embodiments of the present disclosure is provided only and not intended to limit the disclosure so that various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (8)
1. The power battery thermal management system based on multi-mode coupling is characterized by comprising an injection circulation device, an energy storage device, a heating and radiating device and a control device;
The injection circulation device comprises a coupling injector, a gas phase chamber, a heating circulation one-way valve and a two-way circulation pump which are sequentially communicated, wherein the heating circulation one-way valve is connected with a heat dissipation circulation one-way valve in parallel, the conduction direction of the heating circulation one-way valve and the heat dissipation circulation one-way valve is opposite, and a gas temperature sensor and a gas pressure sensor are arranged on the outer wall of the gas phase chamber;
an energy storage temperature sensor is arranged on the outer wall of the energy storage device;
The heating and radiating device is communicated with the bidirectional circulating pump through the energy storage device;
the control device is respectively and electrically connected with the heating circulation check valve, the heat dissipation circulation check valve, the bidirectional circulating pump, the gas temperature sensor, the gas pressure sensor and the energy storage temperature sensor;
The power battery thermal management system based on multi-mode coupling further comprises a battery pack which is internally provided with a battery box body, a multi-cavity cold plate, a power battery and a refrigerant; the multi-cavity cold plate close to the end of the coupling ejector is communicated with the coupling ejector through a gas collecting thin pipe; the multi-cavity cold plate links many gas collection tubules between the different batteries, and the gas collection tube is connected the coupling ejector, when the gaseous phase refrigerant velocity of flow of a certain gas collection tubule increases, reduces the pressure near the gas collection tube export, promotes the evaporation of advance refrigerant, provides the disturbance source, increases the automatic cycle ability of system.
2. A multi-mode coupling based power cell thermal management system as recited in claim 1 wherein said energy storage device comprises an energy storage tank and an energy storage material and heat exchange tube disposed within said energy storage tank.
3. A multi-mode coupling based power cell thermal management system as defined in claim 1 wherein one end of said energy storage means is in communication with said bi-directional circulation pump and the other end is in communication with a three-way valve in said heating and heat dissipating means.
4. A multi-mode coupling based power cell thermal management system as recited in claim 3 wherein said heating and heat dissipating means further comprises a heating circulation line and a heat sink.
5. A multi-mode coupling based power cell thermal management system as defined in claim 4 wherein a first port of said three-way valve is in communication with said heating sink and a second port of said three-way valve is in communication with said multi-cavity cold plate via a heating circulation line; and the third interface of the three-way valve is communicated with one end of the radiator.
6. A multi-mode coupling based power cell thermal management system as recited in claim 5 wherein a valve is disposed in the conduit between the end of the heat sink remote from the third port of the three-way valve and the multi-cavity cold plate.
7. A multimode coupling based power cell thermal management system as in claim 6 wherein the valve and the power cell are both electrically connected to the control device.
8. A power battery thermal management control method based on multi-mode coupling, which adopts the power battery thermal management system based on multi-mode coupling as claimed in any one of claims 1-7, and is characterized by comprising two states of a power battery operation process and a power battery standing process;
In the running process, heat released by the power battery sequentially enters a multi-cavity cold plate, a gas collecting tubule, a coupling ejector, a gas phase chamber, a heat exchange pipe and an energy storage material, and the heat is stored or dissipated under the action of a gas pressure sensor, an energy storage temperature sensor and a control device;
under the standing state, the circulation of heat is realized under the action of a gas temperature sensor, an energy storage temperature sensor and a control device.
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| CN114497812B true CN114497812B (en) | 2024-05-07 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511848A (en) * | 2018-04-16 | 2018-09-07 | 安徽江淮汽车集团股份有限公司 | A kind of batteries of electric automobile heat management system |
| CN113170688A (en) * | 2021-04-06 | 2021-07-27 | 常州大学 | A heat storage and warming system for intelligent connection of mobile energy vehicles to fruit and vegetable greenhouses |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4567996B2 (en) * | 2003-06-09 | 2010-10-27 | パナソニック株式会社 | Thermal storage heat pump system |
| US20160229282A1 (en) * | 2013-02-09 | 2016-08-11 | Quantumscape Corporation | Thermal management system for vehicles with an electric powertrain |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511848A (en) * | 2018-04-16 | 2018-09-07 | 安徽江淮汽车集团股份有限公司 | A kind of batteries of electric automobile heat management system |
| CN113170688A (en) * | 2021-04-06 | 2021-07-27 | 常州大学 | A heat storage and warming system for intelligent connection of mobile energy vehicles to fruit and vegetable greenhouses |
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