CN108110171B - Cylindrical power battery module - Google Patents
Cylindrical power battery module Download PDFInfo
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- CN108110171B CN108110171B CN201711226220.6A CN201711226220A CN108110171B CN 108110171 B CN108110171 B CN 108110171B CN 201711226220 A CN201711226220 A CN 201711226220A CN 108110171 B CN108110171 B CN 108110171B
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- battery module
- battery
- pipe
- power battery
- breather
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a cylindrical power battery module, which relates to the technical field of power battery thermal management, and comprises the following components: breather, breather pipe, group battery top fixed disk, battery module, battery bottom fixed disk, the bottom surface of battery module is fixed on battery bottom fixed disk, and the end of battery module is fixed on group battery top fixed disk, and the battery module comprises ranks neatly arranged's cylindrical battery, the breather pipe is installed to space department between the cylindrical battery, sets up the through-hole on the pipe shaft of breather pipe, and breather pipe one end is airtight, and one end sealing connection breather installs at the top of group battery top fixed disk, the inside temperature sensor that sets up of battery module. The invention is suitable for the technical field of power battery thermal management, can effectively reduce the temperature rise of the power battery module and improve the temperature difference consistency among the batteries of the power battery module.
Description
Technical Field
The invention relates to the technical field of thermal management of power batteries, in particular to a cylindrical power battery module.
Background
As non-renewable energy, petroleum is used as a renewable energy source, and the reserves are gradually reduced along with the use of people. The wide use of automobiles consumes a large amount of petroleum, aggravates the emission of greenhouse gases and increases the pressure of energy crisis and environmental pollution. Therefore, it is a national strategy to develop new energy sources and find alternative energy sources for petroleum in automotive applications.
The electric vehicle is favored by people due to the characteristics of environmental protection, energy conservation, portability and the like as a development trend of future vehicles, has gradually become the focus of world attention, is used as the heart of the electric vehicle, and the development of a new energy vehicle is restricted by a power battery and a battery management system, so that the electric vehicle is a key node for marketization of the new energy vehicle.
The development direction of the current power battery is a high-capacity layered nickel-cobalt-manganese ternary material, which has the advantages of lithium cobalt oxide, lithium nickel oxide and lithium manganese oxide and high specific capacity, and has great application potential. However, as the energy storage density of the battery is increased, the problem of thermal stability is more prominent, and the service life and performance of the power battery are directly affected by excessive temperature or low temperature and uneven temperature distribution among batteries, and the safety problem of a battery system is caused.
The heat management of the power battery aims at timely processing the heat of the battery and controlling the temperature of the battery within a safety range, the conventional heat management method of the power battery mainly comprises air cooling, liquid cooling and phase-change material cold accumulation, aiming at the cylindrical power battery, due to the complexity of the structure of a battery module, the cost can be increased by a complex heat management scheme, potential safety hazards are generated, a plurality of enterprises do not adopt the heat management scheme aiming at the cylindrical power battery, only rely on the natural heat dissipation of the battery module, the service life of the battery can be shortened, and the serious danger of thermal runaway explosion can be caused.
In summary, a battery module is lacked in the prior art, which can naturally dissipate heat, reduce the temperature rise of the battery, and improve the consistency of the temperature difference seen by the battery.
The scheme does not change the module structure on the basis of the current battery module, reduces the occupied space, can effectively reduce the temperature rise of the batteries of the power battery module, and improves the temperature difference consistency among the batteries of the power battery module.
Disclosure of Invention
The invention provides a cylindrical power battery module, which can effectively reduce the temperature rise of batteries of the power battery module and improve the temperature difference consistency among the batteries of the power battery module.
In order to achieve the purpose, the invention adopts the following technical scheme:
cylindrical power battery module includes: breather (1), breather pipe (2), group battery top fixed disk (3), battery module (4), battery bottom fixed disk (5).
The bottom surface of battery module (4) is fixed on battery bottom fixed disk (5), and the top of battery module (4) is fixed on group battery top fixed disk (3), and battery module (4) comprise the cylindrical battery of ranks neatly arranged, and breather pipe (2) are installed to the space department between the cylindrical battery.
Set up the through-hole on the pipe shaft of breather pipe (2), breather pipe (2) one end is airtight, one end sealing connection breather (1), and breather (1) is bloated into gas, and the air current carries out heat exchange with the battery in the clearance of through-hole inflow battery on through-hole on breather pipe (2), then flows out from four sides of battery module (4).
Breather (1) is installed at the top of group battery top fixed disk (3), and battery module (4) are inside to be set up temperature sensor, and when the inside temperature of battery module (4) is higher than the setting value, breather (1) is bloated low temperature and is gaseous, and when the inside temperature of battery module (4) is less than the setting value, breather (1) is bloated high temperature and is gaseous.
Furthermore, a sealed waterproof sealing washer is arranged at the connecting interface of the vent pipe (2) and the air exchange device (1), so that the air tightness is further improved.
Furthermore, the shape of the through hole on the vent pipe (2) is one of an ellipse, a diamond and a rectangle.
Furthermore, the number of the through holes formed in the top of the vent pipe (2) is larger than that of the through holes formed in the middle section, and the temperature of the upper half part of the battery module (4) is higher, so that the vent pipe (2) is provided with more through holes in the upper half section, and heat exchange is facilitated.
Furthermore, the area of the through hole formed in the top of the vent pipe (2) is larger than that of the middle section through hole, the temperature of the upper half part of the battery module (4) is higher, and therefore the area of the upper half section of the vent pipe (2) is larger, and heat exchange is facilitated.
Furthermore, the battery pack top fixing disc (3) and the battery bottom fixing disc (5) are made of fireproof, heat-insulating and light materials, so that the stability is ensured, and the mass is not increased.
Further, the battery module (4) adopts one of the models 26650, 18490, 22650, 26650 and 32650.
Further, the ventilation device (1) adopts an air conditioner or an air pump.
The invention has the beneficial effects that:
according to the invention, the vent pipe is arranged in the battery module, and air flow is blown into the gap of the cylindrical battery through the vent pipe, so that heat exchange is realized; the air flow direction is from inside to outside, so that the heat exchange efficiency is improved, and the problem that the thermal stability of the battery is low during working along with the improvement of the energy storage density is solved; the temperature sensor is arranged in the battery module, the temperature of gas blown by the ventilation device is automatically adjusted, the battery is kept in a certain temperature range, the temperature distribution consistency of each battery is improved, the service life of the battery is prolonged, and the risk of thermal runaway caused by overhigh temperature of the battery is reduced; the invention has the advantages of simple structure, no need of changing the structure of the module, simplicity and practicality. Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the structure of the present invention;
FIG. 3 is a layout of the snorkel of the present invention;
FIG. 4 is a front view of the vent tube of the present invention;
FIG. 5 is a schematic view of air flow lines in the battery module according to the present invention;
fig. 6 is a sectional view of a battery module and a vent tube;
FIG. 7 is a schematic view of the vent tube with the through holes in different positions;
FIG. 8 is a schematic view showing the arrangement of the through holes on the vent pipe;
FIG. 9 is a schematic view of a vent line pumping scheme;
FIG. 10 is a schematic view of different shaped through holes in the vent tube;
fig. 11 is a temperature control flowchart.
The air exchange device comprises a 1-air exchange device, a 2-vent pipe, a 3-battery pack top fixing disc, a 4-battery module and a 5-battery bottom fixing disc.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following detailed description.
The embodiment of the invention provides a cylindrical power battery module, which comprises an air exchange device 1, a vent pipe 2, a battery pack top fixing disc 3, a battery module 4 and a battery bottom fixing disc 5, as shown in fig. 1 and 2.
The bottom surface of the battery module 4 is fixed on the battery bottom fixing disc 5, the top end of the battery module 4 is fixed on the battery pack top fixing disc 3, the battery module 4 is composed of cylindrical batteries which are arranged in line, and the ventilating pipe 2 is arranged in the gap between the cylindrical batteries, as shown in fig. 3 and 5.
Set up the through-hole on the pipe shaft of breather pipe 2, as shown in fig. 4, the through-hole also includes ellipse, rhombus, rectangle, as shown in fig. 10, 2 one ends of breather pipe are airtight, one end sealing connection breather 1, breather 1 is bloated into gas, the air current flows in the clearance of battery through the through-hole on breather pipe 2, carry out heat exchange with the battery, then flow out from four sides of battery module 4, as shown in fig. 4, the export is equipped with the exhaust fan to this keeps the temperature and the difference in temperature uniformity of each battery of power battery module.
The ventilation device 1 is installed on the top of the battery pack top fixing disk 3, the temperature sensor is arranged in the battery module 4, when the temperature in the battery module 4 is higher than a set value, the ventilation device 1 blows low-temperature gas, and when the temperature in the battery module 4 is lower than the set value, the ventilation device 1 blows high-temperature gas, as shown in fig. 11.
The direction of the through holes on the vent tube 2 is shown in fig. 7, and different directions of the through holes can change the way the air flow is emitted. When high-temperature gas is blown in, the mode of fig. 7(a) is adopted, and the temperature can be directly transmitted to the battery; when the low-temperature gas is blown in, the mode of fig. 7 (b) is used, so that the heat in the gas can be taken out as much as possible, and the efficiency improvement and the energy saving of the system are facilitated.
Because the temperature at the top of the single cylindrical battery is overhigh during discharging, and the temperature in the middle of the battery is lowest, more through holes can be arranged at the top of the vent pipe 2, and fewer through holes are arranged in the middle; or the diameter of the through hole at the top is increased and the diameter of the through hole at the middle is decreased, as shown in fig. 8.
The crisscross setting of 2 import exports of breather pipe, as shown in fig. 9, can increase the heat convection area, improve heat exchange efficiency, and when battery module 4 high temperature, the more effective temperature of cold air ability, when battery module 4 temperature height, logical hot-air ability more effective improvement temperature to make battery module 4 keep working at the optimal temperature range.
The invention has the beneficial effects that:
according to the invention, the vent pipe is arranged in the battery module, and air flow is blown into the gap of the cylindrical battery through the vent pipe, so that heat exchange is realized; the air flow direction is from inside to outside, so that the heat exchange efficiency is improved, and the problem that the thermal stability of the battery is low during working along with the improvement of the energy storage density is solved; the temperature sensor is arranged in the battery module, the temperature of gas blown by the ventilation device is automatically adjusted, the battery is kept in a certain temperature range, the temperature distribution consistency of each battery is improved, the service life of the battery is prolonged, and the risk of thermal runaway caused by overhigh temperature of the battery is reduced; the invention has the advantages of simple structure, no need of changing the structure of the module, simplicity and practicality.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. Cylindrical power battery module, its characterized in that includes: a ventilation device (1), a ventilation pipe (2), a battery pack top fixing disc (3), a battery module (4) and a battery bottom fixing disc (5),
the bottom surface of a battery module (4) is fixed on a battery bottom fixing disc (5), the top end of the battery module (4) is fixed on a battery pack top fixing disc (3), the battery module (4) is composed of cylindrical batteries which are arranged in rows and columns in order, a vent pipe (2) is installed at a gap between the cylindrical batteries, a through hole is formed in a pipe body of the vent pipe (2), one end of the vent pipe (2) is closed, one end of the vent pipe is connected with a ventilation device (1), the ventilation device (1) is installed at the top of the battery pack top fixing disc (3), and a temperature sensor is arranged inside the battery module (4); the number of the through holes arranged at the top of the breather pipe (2) is larger than that of the through holes arranged at the middle section, and the area of the through holes arranged at the top of the breather pipe (2) is larger than that of the through holes arranged at the middle section.
2. The cylindrical power battery module as claimed in claim 1, characterized in that a sealing gasket is provided at the connection interface of the breather pipe (2) and the breather device (1).
3. The cylindrical power battery module as defined in claim 1, wherein the shape of the through hole on the vent pipe (2) is one of an ellipse, a diamond and a rectangle.
4. The cylindrical power battery module as claimed in claim 1, wherein the battery pack top fixing tray (3) and the battery bottom fixing tray (5) are made of fireproof, heat-insulating and light-weight materials.
5. The cylindrical power battery module according to claim 1, wherein the battery module (4) adopts one of the battery models 26650, 18490, 22650, 26650 and 32650.
6. The cylindrical power battery module as defined in claim 1, wherein the air exchange device (1) is an air conditioner or an air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711226220.6A CN108110171B (en) | 2017-11-29 | 2017-11-29 | Cylindrical power battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711226220.6A CN108110171B (en) | 2017-11-29 | 2017-11-29 | Cylindrical power battery module |
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| Publication Number | Publication Date |
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| CN108110171A CN108110171A (en) | 2018-06-01 |
| CN108110171B true CN108110171B (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711226220.6A Active CN108110171B (en) | 2017-11-29 | 2017-11-29 | Cylindrical power battery module |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994799A (en) * | 2019-03-04 | 2019-07-09 | 南京航空航天大学 | A kind of cylindrical lithium ion battery mould group parallel type pipeline heat management device |
| CN111668404A (en) * | 2019-03-07 | 2020-09-15 | 宁德时代新能源科技股份有限公司 | Battery module and battery pack |
| CN114388955B (en) * | 2022-01-11 | 2024-02-02 | 中原工学院 | Cylindrical battery fixing support and hybrid battery thermal management method |
| CN116093493B (en) * | 2023-04-07 | 2023-06-27 | 深圳市博硕科技股份有限公司 | Cooling assembly of power battery |
| CN116995339A (en) * | 2023-09-28 | 2023-11-03 | 深圳市德兰明海新能源股份有限公司 | Liquid cooling device and energy storage equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204857904U (en) * | 2015-07-07 | 2015-12-09 | 辽宁凯信新能源技术有限公司 | Ultra -low temperature lithium cell group for electric automobile |
| CN106784460A (en) * | 2016-11-30 | 2017-05-31 | 浙江天能能源科技股份有限公司 | A kind of Ventilated electric electrical automobile power battery thermal management system |
| CN206574770U (en) * | 2017-03-24 | 2017-10-20 | 北京长城华冠汽车技术开发有限公司 | Suitable for the power battery module and power battery module structure of pure electric vehicle |
-
2017
- 2017-11-29 CN CN201711226220.6A patent/CN108110171B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204857904U (en) * | 2015-07-07 | 2015-12-09 | 辽宁凯信新能源技术有限公司 | Ultra -low temperature lithium cell group for electric automobile |
| CN106784460A (en) * | 2016-11-30 | 2017-05-31 | 浙江天能能源科技股份有限公司 | A kind of Ventilated electric electrical automobile power battery thermal management system |
| CN206574770U (en) * | 2017-03-24 | 2017-10-20 | 北京长城华冠汽车技术开发有限公司 | Suitable for the power battery module and power battery module structure of pure electric vehicle |
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| CN108110171A (en) | 2018-06-01 |
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