CN110994073A - Temperature management system for hybrid lithium battery - Google Patents
Temperature management system for hybrid lithium battery Download PDFInfo
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- CN110994073A CN110994073A CN201911337030.0A CN201911337030A CN110994073A CN 110994073 A CN110994073 A CN 110994073A CN 201911337030 A CN201911337030 A CN 201911337030A CN 110994073 A CN110994073 A CN 110994073A
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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
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of 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
- H01M10/62—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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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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
- H01M10/6562—Gases with free flow by convection only
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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
- 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
- H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
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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
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a temperature management system of a hybrid lithium battery, which comprises a battery pack, a battery box and an automatic temperature control module, wherein the battery pack is connected with the battery box; a hollow bracket for fixing the battery pack is arranged in the battery box, heat insulation materials are arranged on the periphery of the battery pack, heating mechanisms are uniformly distributed on the lower surface of the battery pack, a heat conduction layer, an encapsulated composite phase change material, a heat conduction layer and fins are sequentially sleeved on each battery monomer, and air flow channels are reserved between adjacent fins; fans are distributed on the lower side of the battery box, air deflectors are arranged above the fans and opposite to the air inlets below the fans, and air outlets and baffles are arranged on the upper side of the battery box; the automatic temperature control module can collect the surface temperature and the environment temperature of the battery pack, close the fan, open the heating mechanism and close the air outlet through the baffle plate at low temperature, and open the fan, close the heating mechanism, open the air outlet through the baffle plate and sweep air through the air deflector at high temperature. The system can automatically realize high-temperature heat dissipation and low-temperature heat preservation of the battery pack and maintain the temperature consistency of the battery monomers.
Description
Technical Field
The invention belongs to the field of thermal runaway protection of lithium battery packs, and particularly relates to a temperature management system of a hybrid lithium battery.
Background
The development of new energy automobile technology is an important measure for dealing with energy crisis and air pollution, and the temperature of the lithium power battery pack of the electric automobile is very important for the performance and safety of the lithium power battery pack. The cooling mode of the existing lithium power battery pack mainly comprises air cooling and liquid cooling, wherein the air cooling utilizes the flow of air to discharge the heat of the battery pack, the air duct design requirement is high, the temperature difference of battery monomers is large, and the effect is poor under the conditions of large-scale heat dissipation and high-power discharge; the liquid cooling relies on liquid flow to take the heat out, and is very high to battery box design and processing requirement, and it adopts viscous medium, needs great pump power just can the operation, has great influence to vehicle continuation of the journey.
Disclosure of Invention
The invention aims to provide a temperature management system of a hybrid lithium battery, which has a simple structure and low energy consumption and can automatically realize high-temperature heat dissipation and low-temperature heat preservation of a battery pack and maintain the temperature consistency of battery monomers.
The technical scheme adopted by the invention is as follows:
a temperature management system of a hybrid lithium battery comprises a battery pack consisting of single batteries, a battery box and an automatic temperature control module; a hollow bracket for fixing the battery pack is arranged in the battery box, the periphery of the battery pack is provided with a heat insulation material in a non-contact manner, the lower surface of the battery pack is uniformly distributed with a heating mechanism in a non-contact manner, each battery monomer is sequentially sleeved with a heat conduction layer, an encapsulated composite phase change material, a heat conduction layer and fins, and an air flow channel is reserved between every two adjacent fins; the lower side of the battery box is distributed with a fan, the lower part of the fan is opposite to the air inlet, the upper part of the fan is provided with an air deflector driven by a steering engine, and the upper side of the battery box is provided with an air outlet and a baffle driven by the steering engine; the automatic temperature control module can collect the surface temperature and the ambient temperature of the battery pack, close the fan, open the heating mechanism and close the air outlet through the steering engine driving baffle plate at low temperature, and open the fan and close the heating mechanism and open the air outlet through the steering engine driving baffle plate and sweep air through the steering engine driving air deflector at high temperature.
Further, the automatic temperature control module can display the surface temperature of the battery pack and the ambient temperature and give an alarm when the surface temperature of the battery pack is overheated.
Furthermore, the baffle and the air outlet both adopt a grid type structure.
Furthermore, a clamping groove is formed in the periphery in the battery box, and the heat insulation material is placed in the battery box through the clamping groove.
Further, the fin material is metallic aluminum.
Further, the heat-conducting layer is made of heat-conducting silicone grease.
Further, the heat insulating material is high-alkyl polymer fiber.
Further, the composite phase change material comprises n-docosane, expanded graphite and nanoscale metal copper powder, and the phase change temperature of the n-docosane is between 0 and 50 ℃.
Further, the wind speed when the fan is turned on is positively correlated with the surface temperature of the battery pack.
Further, the hollow support is divided into two layers and is respectively positioned on the upper surface and the lower surface of the battery.
The invention has the beneficial effects that:
the system has simple structure, low energy consumption and good temperature control performance, can automatically realize the effects of high-temperature heat dissipation, low-temperature heat preservation and maintenance of the temperature consistency of the battery monomer of the battery pack, and better ensures the safety and reliability of the battery pack in the long-term use process, namely, the air outlet is closed to avoid heat dissipation and the heat preservation material plays a role in heat preservation at low temperature, so that the heating efficiency of the heating mechanism is high, the battery pack can be maintained in a proper working temperature range, and the discharge time or the working time of the battery pack in a low-temperature environment is prolonged; at high temperature, the heat that the battery monomer produced is absorbed by compound phase change material, the heat is transmitted for heat-conducting layer and fin in proper order through compound phase change material, the fin passes through air flow channel natural air cooling, the fan plays forced air cooling's effect, cooperation natural air cooling is in time taken away the heat, radiate from the air outlet, natural air cooling and forced air cooling combined action, the radiating efficiency is high, can maintain group battery temperature at reasonable within range, better temperature uniformity can be maintained in phase change material's existence, the group battery thermal runaway has been avoided, the aviation baffle sweeps the wind simultaneously, make the air current field distribute more evenly, the difference in temperature between the battery monomer has been reduced.
Drawings
Fig. 1 is an elevational cross-section of an embodiment of the invention (the automatic temperature control module is not shown).
Fig. 2 is a side sectional view of an embodiment of the present invention (the automatic temperature control module is not shown).
Fig. 3 is a top view of an embodiment of the present invention (the automatic temperature control module, the air outlet and the baffle are not shown).
FIG. 4 is a top view of a hollow frame according to an embodiment of the present invention.
In the figure: 1-a baffle plate; 2-air outlet; 3-a battery cell; 4-composite phase change material; 5-a heat conducting layer; 6-a fin; 7-a battery box; 8-hollowing out the bracket; 9-a wind deflector; 10-a steering engine; 11-a fan.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 to fig. 3, a temperature management system for a hybrid lithium battery includes a battery pack composed of battery cells 3 (the type of the battery cells 3 is not limited, in this embodiment, the battery cells 3 are 18650 lithium ion battery cells), a battery box 7, and an automatic temperature control module; a hollowed-out support 8 for fixing a battery pack is arranged in the battery box 7 (the hollowed-out shape and the spacing are adjusted according to actual conditions to adapt to different battery packs, in the embodiment, the center spacing between every two adjacent battery monomers 3 is 25mm), the periphery of the battery pack is provided with heat insulation materials in a non-contact manner, the lower surface of the battery pack is uniformly provided with heating mechanisms (such as heating wires) in a non-contact manner, each battery monomer 3 is sequentially sleeved with a heat conduction layer 5, an encapsulated composite phase-change material 4 (two ends of the composite phase-change material 4 are encapsulated through metal plates), the heat conduction layer 5 and fins 6, and air flow channels are reserved between; a fan 11 is distributed on the lower side of the battery box 7, an air deflector 9 driven by a steering engine 10 is arranged below the fan 11 and opposite to the air inlet, and an air outlet 2 and a baffle 1 driven by the steering engine 10 are arranged on the upper side of the battery box 7; the automatic temperature control module (the composition of the automatic temperature control module is not limited, in this embodiment, an LCD display screen and an STM32 single chip microcomputer are adopted) can collect the surface temperature and the ambient temperature of the battery pack, and when the temperature is low (set according to actual conditions, such as the temperature is set to be about low less than 10 ℃), the fan 11 is turned off, the heating mechanism is turned on, the baffle 1 is driven by the steering engine 10 to close the air outlet 2, when the temperature is high (set according to actual conditions, if the temperature is set to be higher than about 40 ℃), the fan 11 is started (the wind speed is positively correlated with the surface temperature of the battery pack when the fan is started, for example, when the surface temperature of the battery is 53 ℃, the speed of the fan reaches the maximum, and when the surface temperature of the battery is between 40 ℃ and 53 ℃, the rotating speed of the fan increases linearly), the heating mechanism is closed, the baffle 1 is driven by the steering engine 10 to open the air outlet 2, and the air deflector 9 is driven by the steering engine 10 to sweep air.
The system has simple structure, low energy consumption and good temperature control performance, can automatically realize the effects of high-temperature heat dissipation, low-temperature heat preservation and maintenance of the temperature consistency of the battery monomer 3 of the battery pack, and better ensures the safety and reliability of the battery pack in the long-term use process, namely, the air outlet 2 is closed to avoid heat dissipation and the heat preservation material plays a role in heat preservation at low temperature, so that the heating mechanism has high heating efficiency, can maintain better temperature consistency and prolong the discharge time or working time of the battery pack in a low-temperature environment; when high temperature, the heat that battery monomer 3 produced is absorbed by composite phase change material 4, the heat is transmitted for heat-conducting layer 5 and fin 6 in proper order through composite phase change material 4, fin 6 is through air flow channel natural air cooling, fan 11 plays forced air cooling's effect, the cooperation is naturally air cooled and is in time taken away the heat, from air outlet 2 effluvium, natural air cooling and forced air cooling combined action, the radiating efficiency is high, can maintain better temperature uniformity, the group battery thermal runaway has been avoided, aviation baffle 9 is swept simultaneously, make the air current field distribute more evenly, the difference in temperature between the battery monomer 3 has been reduced.
In this embodiment, the automatic temperature control module can display the surface temperature of the battery pack and the ambient temperature and give an alarm when the surface temperature of the battery pack is too high (for example, over 53 ℃) (the alarm mode is vibration of a buzzer, continuous lighting of a red signal lamp, etc.).
The shape and size of the baffle 1, the air inlet and the air outlet 2 can be adjusted according to actual needs, as shown in fig. 1 and fig. 2, in this embodiment, the baffle 1 and the air outlet 2 are preferably of a grid structure.
In this embodiment, a clamping groove is formed in the periphery of the battery box 7, and the heat-insulating material is placed in the battery box 7 through the clamping groove.
In the embodiment, the fins 6 are preferably made of metal aluminum, so that the density is low, the thermal conductivity is high, and of course, other suitable materials can be adopted, the thickness of the fins 6 is preferably 0.5mm, and the included angle between adjacent fins 6 is 5 degrees, which can be adjusted according to the needs; the heat-conducting layer is preferably made of heat-conducting silicone grease, the density is low, the heat conductivity is high, and other suitable materials can be adopted; the insulation material is preferably a high alkyl polymeric fiber, low density, low thermal conductivity, flame retardant, although other suitable materials may be used.
The composite phase change material 4 can be of various types, including n-docosane, expanded graphite and nano-scale metallic copper powder, with a n-docosane phase change temperature between 0-50 ℃.
As shown in fig. 4, in the present embodiment, the hollow frame 8 is divided into two layers and located on the upper and lower surfaces of the battery respectively.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a hybrid lithium battery temperature management system which characterized in that: the device comprises a battery pack consisting of single batteries, a battery box and an automatic temperature control module; a hollow bracket for fixing the battery pack is arranged in the battery box, the periphery of the battery pack is provided with a heat insulation material in a non-contact manner, the lower surface of the battery pack is uniformly distributed with a heating mechanism in a non-contact manner, each battery monomer is sequentially sleeved with a heat conduction layer, an encapsulated composite phase change material, a heat conduction layer and fins, and an air flow channel is reserved between every two adjacent fins; the lower side of the battery box is distributed with a fan, the lower part of the fan is opposite to the air inlet, the upper part of the fan is provided with an air deflector driven by a steering engine, and the upper side of the battery box is provided with an air outlet and a baffle driven by the steering engine; the automatic temperature control module can collect the surface temperature and the ambient temperature of the battery pack, close the fan, open the heating mechanism and close the air outlet through the steering engine driving baffle plate at low temperature, and open the fan and close the heating mechanism and open the air outlet through the steering engine driving baffle plate and sweep air through the steering engine driving air deflector at high temperature.
2. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the automatic temperature control module can display the surface temperature of the battery pack and the ambient temperature and give an alarm when the surface temperature of the battery pack is overheated.
3. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the baffle and the air outlet both adopt a grid type structure.
4. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the battery box is internally provided with clamping grooves at the periphery, and the heat-insulating material is placed in the battery box through the clamping grooves.
5. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the fin material is metallic aluminum.
6. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the heat-conducting layer is made of heat-conducting silicone grease.
7. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the heat insulating material is high-alkyl polymer fiber.
8. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the composite phase-change material comprises n-docosane, expanded graphite and nano-scale metal copper powder, wherein the phase-change temperature of the n-docosane is between 0 and 50 ℃.
9. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the wind speed is positively correlated to the surface temperature of the battery pack when the fan is turned on.
10. A hybrid lithium battery temperature management system as claimed in claim 1, characterized in that: the hollow support is divided into two layers and is respectively positioned on the upper surface and the lower surface of the battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911337030.0A CN110994073A (en) | 2019-12-23 | 2019-12-23 | Temperature management system for hybrid lithium battery |
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| CN201911337030.0A CN110994073A (en) | 2019-12-23 | 2019-12-23 | Temperature management system for hybrid lithium battery |
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Cited By (8)
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| CN112259830A (en) * | 2020-10-28 | 2021-01-22 | 辽宁九夷锂能股份有限公司 | Lithium battery capable of starting discharge at low temperature and preparation method thereof |
| CN112582705A (en) * | 2020-12-22 | 2021-03-30 | 桂林航天工业学院 | New energy automobile group battery ventilation heat abstractor |
| CN112787018A (en) * | 2021-01-05 | 2021-05-11 | 许继集团有限公司 | Prefabricated cabin body for energy storage power station and air exhaust and heat dissipation method thereof |
| CN113594574A (en) * | 2021-07-22 | 2021-11-02 | 上汽通用五菱汽车股份有限公司 | Temperature control method for battery pack, vehicle, and readable storage medium |
| CN114256535A (en) * | 2021-12-31 | 2022-03-29 | 宁波诺丁汉大学 | Lithium ion battery thermal management system and method based on phase change material and mutually-embedded fins |
| CN115149154A (en) * | 2022-07-27 | 2022-10-04 | 自格(深圳)科技开发有限公司 | Mobile power supply energy storage battery based on efficient energy conversion |
| CN115395139A (en) * | 2022-09-25 | 2022-11-25 | 青岛理工大学 | Electrochemical energy storage thermal management system and control method thereof |
| CN115863834A (en) * | 2022-12-22 | 2023-03-28 | 中国铁塔股份有限公司 | Temperature control device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259830A (en) * | 2020-10-28 | 2021-01-22 | 辽宁九夷锂能股份有限公司 | Lithium battery capable of starting discharge at low temperature and preparation method thereof |
| CN112582705A (en) * | 2020-12-22 | 2021-03-30 | 桂林航天工业学院 | New energy automobile group battery ventilation heat abstractor |
| CN112582705B (en) * | 2020-12-22 | 2022-03-29 | 桂林航天工业学院 | New energy automobile group battery ventilation heat abstractor |
| CN112787018A (en) * | 2021-01-05 | 2021-05-11 | 许继集团有限公司 | Prefabricated cabin body for energy storage power station and air exhaust and heat dissipation method thereof |
| CN113594574A (en) * | 2021-07-22 | 2021-11-02 | 上汽通用五菱汽车股份有限公司 | Temperature control method for battery pack, vehicle, and readable storage medium |
| CN114256535A (en) * | 2021-12-31 | 2022-03-29 | 宁波诺丁汉大学 | Lithium ion battery thermal management system and method based on phase change material and mutually-embedded fins |
| US11804625B2 (en) | 2021-12-31 | 2023-10-31 | University Of Nottingham Ningbo China | Lithium-ion battery thermal management system and method based on phase change material and mutually embedded fins |
| CN115149154A (en) * | 2022-07-27 | 2022-10-04 | 自格(深圳)科技开发有限公司 | Mobile power supply energy storage battery based on efficient energy conversion |
| CN115395139A (en) * | 2022-09-25 | 2022-11-25 | 青岛理工大学 | Electrochemical energy storage thermal management system and control method thereof |
| CN115863834A (en) * | 2022-12-22 | 2023-03-28 | 中国铁塔股份有限公司 | Temperature control device |
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