CN112928358A - Novel battery pack cooling device - Google Patents

Novel battery pack cooling device Download PDF

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Publication number
CN112928358A
CN112928358A CN202110331783.1A CN202110331783A CN112928358A CN 112928358 A CN112928358 A CN 112928358A CN 202110331783 A CN202110331783 A CN 202110331783A CN 112928358 A CN112928358 A CN 112928358A
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CN
China
Prior art keywords
battery
battery pack
air channel
partition plate
cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110331783.1A
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Chinese (zh)
Inventor
赵启晨
张莹
徐猛
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Nanchang University
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Nanchang University
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Filing date
Publication date
Application filed by Nanchang University filed Critical Nanchang University
Priority to CN202110331783.1A priority Critical patent/CN112928358A/en
Publication of CN112928358A publication Critical patent/CN112928358A/en
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a novel battery pack cooling device which comprises a battery box, a forward cold air channel, a reverse cold air channel, a middle partition plate and a rectifying grid arranged at an air inlet of the battery box cooling channel, wherein the battery box comprises a shell and a plurality of battery packs inside the shell, the plurality of battery packs are fixed in the shell in a side-by-side or upper-and-lower-layer mode, a middle partition plate is transversely arranged in the middle of the battery box, and the middle partition plate divides the cooling channel inside the battery box into the forward cold air channel and the reverse cold air channel. The invention utilizes the reverse layered airflow to cool the battery pack, thereby greatly improving the consistency of the whole temperature of the battery pack, reducing the highest temperature and the maximum temperature difference of the battery pack, prolonging the service life of the battery and realizing low energy consumption; meanwhile, the middle partition plate is made of a strong heat conduction material, and heat exchange can be carried out through the transverse partition plate when the temperature of cooling air in the upper and lower channels is uneven, so that the consistency of the overall temperature of the battery pack is further ensured.

Description

Novel battery pack cooling device
Technical Field
The invention belongs to the technical field of battery pack heat dissipation, and particularly relates to a novel battery pack cooling device.
Background
Lithium titanate batteries have become an attractive option for battery electric vehicles and hybrid electric vehicles. In order to maintain safe operating temperatures, these batteries must be actively cooled during operation. The liquid cooling systems typically used for this purpose are inefficient due to the parasitic power consumed by the on-board cooler unit and the coolant pump. A more efficient option is to circulate ambient air through the battery pack and reject the heat directly to the environment. Such an air-cooled thermal management system, which uses metal foam-based heat exchanger plates, has sufficient heat dissipation capacity.
Pure electric and hybrid electric vehicles are alternatives to global efforts to reduce carbon dioxide emissions from the transportation industry. As is known, an electric vehicle generally comprises a plurality of battery cells connected in series and in parallel, and a power battery system is an extremely critical part of the electric vehicle and determines the mileage, economy and dynamic performance of the electric vehicle. However, temperature directly affects the performance, life and safety of the battery pack. In the charging and discharging process, heat is generated due to chemical reaction, heat dissipation conditions around each battery monomer are different, so that charging and discharging efficiency of each battery is different, and at the moment, partial batteries in the battery pack are in an overheated state. Battery thermal management is critical in the development of electric vehicles.
The performance and lifetime of lithium ion batteries are very temperature sensitive and it is therefore important to maintain a suitable temperature range. Local overheating and large temperature variations during charging and discharging remain key challenges in the battery field. The problem of lack of the cooling mechanism of innovation in the reality improves the inhomogeneity of battery temperature, in order to further strengthen the heat dissipation, improves the temperature homogeneity and the efficiency of group battery, prolongs battery life, under simple structure, easily control's the condition, can effectively improve electric automobile's mileage, power performance, provides a neotype reverse layering air current of level.
Disclosure of Invention
The invention aims to solve the problems, and provides a novel battery pack cooling device which is simple in overall structure and easy to control, the heat dissipation capacity of a battery pack is enhanced, the temperature uniformity and efficiency of the battery pack are improved, the service life of a battery is prolonged, and the mileage and power performance of an electric automobile can be effectively improved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a novel group battery cooling device, includes battery case, forward cold wind passageway, reverse cold wind passageway, intermediate bottom and rectification bars, the battery case includes shell and a plurality of group batteries of inside, a plurality of group batteries are fixed in the shell side by side or divide into two-layer from top to bottom, battery case middle part transverse arrangement has intermediate bottom, intermediate bottom divides the inside cooling channel of battery case into forward cold wind passageway and reverse cold wind passageway.
The battery box cooling device further comprises a rectifying grid, wherein the rectifying grid is arranged at an air inlet of the battery box cooling channel, and the grid of the rectifying grid is rectangular.
The upper part of the left side of the battery box is provided with a first inlet, and the lower part of the left side of the battery box is provided with a fourth outlet; a third outlet is formed in the upper part of the right side of the battery box, and a second inlet is formed in the lower part of the right side of the battery box; the first inlet and the fourth outlet and the third outlet and the second inlet are separated by intermediate clapboards.
The cooling airflow direction of the forward cold air channel is from left to right, and the cooling airflow direction of the reverse cold air channel is from right to left.
The battery box is divided into a forward cold air channel and a reverse cold air channel by the middle partition plate, and a group of battery packs are arranged in the forward cold air channel and the reverse cold air channel respectively.
The middle part of the battery box can be provided with a plurality of intermediate baffles, a cold air channel is formed between each baffle and the adjacent baffle or the battery box, and the flow directions of cooling air flows in the adjacent channels are opposite.
The middle partition plate is made of a strong heat conduction material, preferably foamed aluminum, and the thickness of the front aluminum plate and the thickness of the rear aluminum plate are 1.27 mm.
The invention has the beneficial effects that:
1. the reverse layered airflow can greatly improve the temperature consistency, reduce the highest temperature and the maximum temperature difference of the battery pack, prolong the service life of the battery and realize low energy consumption;
2. the number of the middle partition plates can be increased according to actual requirements; reverse laminar airflow can also be improved by adding a flow straightener at the inlet, reducing temperature fluctuations at the cell inlet.
Drawings
Fig. 1 is a schematic structural diagram of a novel battery pack cooling device according to the present invention;
FIG. 2 is a schematic view illustrating the flow of cooling air in a novel battery pack cooling apparatus according to the present invention;
FIG. 3 is a schematic plan view of a gate structure according to the present invention;
in the figure: 1. a battery case; 101. a battery pack; 102. a housing; 2. a forward cold air channel; 3. a reverse cold air channel; 4. a middle partition plate; 5. a rectifying grid; 6. a first inlet; 7. a third outlet; 8. a fourth outlet; 9. a second inlet.
Detailed Description
In order to better explain the present invention, the detailed description of the present invention is made below with reference to the accompanying drawings and examples.
Example (b): see fig. 1-3.
As shown in fig. 1, a novel battery pack cooling device comprises a battery pack 1, a forward cold air channel 2, a reverse cold air channel 3 and a middle partition plate 4, wherein the battery pack 1 comprises a shell 102 and a plurality of battery packs 101 inside, the plurality of battery packs 101 are fixed in the shell 102 side by side or divided into an upper layer and a lower layer, a middle partition plate 4 is transversely arranged in the middle of the battery pack 1, and the middle partition plate 4 divides the cooling channel inside the battery pack 1 into the forward cold air channel 2 and the reverse cold air channel 3.
As shown in fig. 2, a first inlet 6 is arranged at the upper part of the left side of the battery box 1, and a fourth outlet 8 is arranged at the lower part of the left side; a third outlet 7 is arranged at the upper part of the right side of the battery box 1, and a second inlet 9 is arranged at the lower part of the right side; the first inlet 6 and the fourth outlet 8, and the third outlet 7 and the second inlet 9 are separated by an intermediate partition plate 4.
The cooling air flow direction of the forward cold air channel 2 is from left to right, and the cooling air flow direction of the reverse cold air channel 3 is from right to left.
The battery case is characterized in that the middle partition plate 4 divides the interior of the battery case 1 into a forward cold air channel 2 and a reverse cold air channel 3, a group of battery packs are respectively arranged in the forward cold air channel 2 and the reverse cold air channel 3, the battery packs are fixed with the middle partition plate and the inner walls of the two sides of the battery case, in the embodiment, the middle partition plate is made of a strong heat conduction material, preferably foamed aluminum is selected, and the thickness of the aluminum plate is 1.27mm in the front and the back of the foamed aluminum.
As shown in fig. 3, the novel battery pack cooling device further comprises a rectifying grid 5, the grid shape of the rectifying grid 5 is rectangular, the rectifying grid 5 is arranged at the air inlet of the cooling channel of the battery box 1, and the rectifying grid 5 can be used for improving reverse layered airflow and reducing temperature fluctuation at the battery inlet.
The middle part of the battery box 1 can be provided with a plurality of intermediate partition plates 4, a cold air channel is formed between each partition plate and the adjacent partition plate or the battery box 1, and the flow directions of cooling air flows in the adjacent channels are opposite.
Referring to fig. 1 to 3, the operation principle of the novel battery pack cooling device of the present invention will now be described:
the device of the invention is provided with a first inlet 6 and a fourth outlet 8 at the left and right sides of a battery box respectively; a third outlet 7, a second inlet 9, as shown in fig. 2, through which cooling air enters from the external environment through the first inlet 6, the second inlet 9, and then flows to each battery cell in the cooling channel; the flow field is uniformly divided into an upper cold air channel and a lower cold air channel by the middle partition plate 4 along the horizontal direction of the battery box 1, the airflow direction of the upper channel, namely the forward cold air channel 2, is from left to right, and the airflow direction of the lower channel, namely the reverse cold air channel 3, is from right to left; the cooling air in the upper and lower channels flows reversely to cool the battery. The invention utilizes the reverse layered airflow to cool the battery pack, thereby greatly improving the consistency of the whole temperature of the battery pack, reducing the highest temperature and the maximum temperature difference of the battery pack, prolonging the service life of the battery and realizing low energy consumption; meanwhile, the middle partition plate 4 is made of a strong heat conduction material, and heat exchange can be carried out through the transverse partition plate when the temperature of cooling air in the upper and lower channels is uneven, so that the consistency of the overall temperature of the battery pack is further ensured.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent transformations made by the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. The utility model provides a novel battery pack cooling device, includes battery case (1), forward cold wind passageway (2), reverse cold wind passageway (3), intermediate bottom (4) and rectifier grid (5), its characterized in that, battery case (1) is including shell (102) and inside a plurality of group battery (101), a plurality of group battery (101) are fixed in shell (102) side by side or divide into upper and lower two-layer, battery case (1) middle part transverse arrangement has intermediate bottom (4), intermediate bottom divide into forward cold wind passageway (2) and reverse cold wind passageway (3) with the inside cooling channel of battery case (1).
2. The novel battery pack cooling device as claimed in claim 1, further comprising a rectifying grid (5), wherein the rectifying grid (5) is arranged at an air inlet of a cooling channel of the battery pack (1), and the grid of the rectifying grid (5) is rectangular.
3. The novel battery pack cooling device as claimed in claim 1, wherein the battery case (1) is provided with a first inlet (6) at the upper left side and a fourth outlet (8) at the lower left side; a third outlet (7) is formed in the upper part of the right side of the battery box (1), and a second inlet (9) is formed in the lower part of the right side; the first inlet (6) and the fourth outlet (8) and the third outlet (7) and the second inlet (9) are separated by an intermediate partition plate (4).
4. The novel battery pack cooling device as claimed in claim 1, wherein the cooling air flow direction of the forward cooling air channel (2) is from left to right, and the cooling air flow direction of the reverse cooling air channel (3) is from right to left.
5. The novel battery pack cooling device as claimed in claim 1, wherein the intermediate partition (4) divides the interior of the battery pack (1) into a forward cooling air channel (2) and a reverse cooling air channel (3), and a plurality of battery packs (101) are respectively arranged in the forward cooling air channel (2) and the reverse cooling air channel (3).
6. The novel battery pack cooling device as claimed in claim 1, wherein a plurality of intermediate partition plates (4) are arranged in the middle of the battery box (1), and a cold air channel is formed between each partition plate and the adjacent partition plate or the battery box (1), wherein the flow directions of the cooling air in the adjacent channels are opposite.
7. A novel battery pack cooling device as claimed in claim 1, characterised in that the intermediate partition (4) is of a highly heat conductive material, preferably foamed aluminium, the aluminium sheet thickness being 1.27mm before and after the foamed aluminium.
CN202110331783.1A 2021-03-29 2021-03-29 Novel battery pack cooling device Pending CN112928358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110331783.1A CN112928358A (en) 2021-03-29 2021-03-29 Novel battery pack cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110331783.1A CN112928358A (en) 2021-03-29 2021-03-29 Novel battery pack cooling device

Publications (1)

Publication Number Publication Date
CN112928358A true CN112928358A (en) 2021-06-08

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CN202110331783.1A Pending CN112928358A (en) 2021-03-29 2021-03-29 Novel battery pack cooling device

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118099602A (en) * 2024-04-23 2024-05-28 南昌大学 Battery pack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118099602A (en) * 2024-04-23 2024-05-28 南昌大学 Battery pack

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