LU509618B1 - Thermal management device for lithium battery modules - Google Patents

Thermal management device for lithium battery modules

Info

Publication number
LU509618B1
LU509618B1 LU509618A LU509618A LU509618B1 LU 509618 B1 LU509618 B1 LU 509618B1 LU 509618 A LU509618 A LU 509618A LU 509618 A LU509618 A LU 509618A LU 509618 B1 LU509618 B1 LU 509618B1
Authority
LU
Luxembourg
Prior art keywords
lithium battery
heat pump
thermal management
battery modules
management device
Prior art date
Application number
LU509618A
Other languages
French (fr)
Inventor
Guanping Huo
Original Assignee
Huzhou College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huzhou College filed Critical Huzhou College
Priority to LU509618A priority Critical patent/LU509618B1/en
Application granted granted Critical
Publication of LU509618B1 publication Critical patent/LU509618B1/en

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Classifications

    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • 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
    • 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
    • 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
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)

Abstract

The present invention discloses a thermal management device for lithium battery modules, which includes a base box, front and rear aluminum heat exchange plates, a buffer plate, and the lithium battery module body. The top of the base box is equipped with a heat pump hot and cold fluid supply device and the lithium battery module body. Aluminum heat exchange plates are installed on both the front and rear sides of the lithium battery module body. Fixing bases are secured to the front and rear surfaces of both the heat pump hot and cold fluid supply device and the aluminum heat exchange plates. The invention utilizes the expansion of the spring in conjunction with the guide block sliding along the guide groove to assist the telescopic rod in its reciprocating motion. This enables the buffer plate to absorb external impact forces, thereby cushioning such forces. This configuration provides effective protection for the heat pump hot and cold fluid supply device, the front and rear aluminum heat exchange plates, and the lithium battery module body, significantly improving their service life.

Description

THERMAL MANAGEMENT DEVICE FOR LITHIUM BATTERY MODULES
Technical Field
The present invention relates to the field of new energy lithium battery energy storage technologies, and specifically to a thermal management device for lithium battery modules.
Background Technology
Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive/negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and usage require stringent environmental conditions. With advancements in science and technology, lithium batteries have become mainstream.
Existing lithium battery modules lack structures capable of buffering external impact forces, resulting in insufficient protection that adversely affects the service life of the lithium battery modules.
Furthermore, current lithium battery modules utilize fans for forced cooling, which have significant drawbacks, including inadequate cooling capacity. When lithium battery modules are charged or discharged at 1C or higher currents, the fan's cooling capacity becomes critically insufficient, leading to elevated cell temperatures. At low ambient temperatures, PTC heating is used to warm the lithium battery modules, but this heating method has a low energy efficiency ratio. When lithium battery modules operate under the aforementioned conditions for extended periods, their cell capacity declines, internal resistance increases, and cell consistency within the same module deteriorates.
This results in reduced cycle life of the cells and, under extreme conditions, may lead to thermal runaway of the lithium battery. Hence, there is an urgent need for development in this area.
Summary of the Invention 0509618
The purpose of the present invention is to provide a thermal management device for lithium battery modules to address the issues presented in the background technology.
To achieve the above purpose, the present invention provides the following technical solution: a thermal management device for lithium battery modules, comprising a base box, front and rear aluminum heat exchange plates, a buffer plate, and the lithium battery module body. The top of the base box is equipped with a heat pump hot and cold fluid supply device and the lithium battery module body. Aluminum heat exchange plates are installed on both the front and rear sides of the lithium battery module body. Fixing bases are secured to the front and rear surfaces of the heat pump hot and cold fluid supply device and the aluminum heat exchange plates. Inside the fixing bases, telescopic rods are connected via springs. The telescopic rods extend to the exterior of the fixing bases and are connected to the buffer plate. Both sides inside the fixing bases are connected to guide grooves. Both sides of the end of each telescopic rod inside the fixing bases are connected to guide blocks matching the guide grooves, and the guide blocks slide along the guide grooves to assist in stabilizing the telescopic motion of the rods.
Preferably, the heat pump hot and cold fluid supply device comprises a heat pump body, a condenser, a heat exchanger, and a compressor.
Preferably, the heat pump body is connected to one side of the two front and rear aluminum heat exchange plates through a first connecting pipe.
Preferably, the heat exchanger is connected to the heat pump body and the first connecting pipe through a second connecting pipe.
Preferably, the compressor communicates with the heat pump body via the second connecting pipe.
Preferably, the front surface of the base box is equipped with a control device.
Preferably, the interior of the base box is connected to a heat dissipation chamber.
A driving motor is installed in the middle of the heat dissipation chamber, and both sides of the heat dissipation chamber are connected to transmission rods. The driving end of the driving motor and the upper ends of the two transmission rods are each fitted with LUS09618 transmission wheels. The three transmission wheels are connected by a transmission belt. The driving end of the driving motor and the upper ends of the two transmission rods are each connected to heat dissipation fan blades. The arrangement of the transmission belt facilitates the synchronous rotation of the three transmission wheels and the three heat dissipation fan blades.
Preferably, both sides of the base box are connected to assembly ports. Each assembly port is equipped with a dustproof mesh and a magnetic suction stone. The outer surface of the dustproof mesh is fitted with a magnetic iron frame, and the magnetic iron frame is magnetically matched with the magnetic suction stone.
Compared with the existing technology, the beneficial effects of the present invention are as follows: (1) The thermal management device for lithium battery modules utilizes the expansion of the spring in conjunction with the guide block sliding along the guide groove to assist the telescopic rod in its reciprocating motion. This allows the buffer plate to absorb external impact forces, thereby cushioning these forces. This design provides excellent protection for the heat pump hot and cold fluid supply device, the front and rear aluminum heat exchange plates, and the lithium battery module body, effectively extending the service life of these components. (2) The thermal management device for lithium battery modules employs a first connecting pipe to enable the heat pump hot and cold fluid supply device to supply hot or cold fluid to the two front and rear aluminum heat exchange plates for cooling or heating operations. When the control device detects that the temperature of the lithium battery module body exceeds a preset value, the heat pump body activates the cooling mode and supplies a glycol solution at a preset temperature to the front and rear aluminum heat exchange plates through the first connecting pipe, cooling the lithium battery module body. Conversely, when the control device detects that the temperature of the lithium battery module body is 20°C, the heat pump body activates the heating mode and supplies glycol at 30°C to the front and rear aluminum heat exchange plates, heating the lithium battery module body. This configuration ensures that the lithium battery module body operates within an optimal temperature range, effectively LUS09618 improving its charging and discharging performance and extending its service life. (3) The thermal management device for lithium battery modules integrates the use of a transmission belt, cooling fan blades, a driving motor, transmission wheels, and transmission rods. This arrangement enables synchronized rotation of the three cooling fan blades, achieving efficient air-cooled operation and significantly enhancing the cooling performance of the lithium battery module body. Additionally, the dustproof mesh isolates dust in the circulating air during heat exchange operations, preventing interference with the operation of the cooling fan blades. The magnetic iron frame and magnetic suction stone securely mount the dustproof mesh within the assembly port, ensuring stable installation and facilitating easy disassembly and cleaning during maintenance.
Description of the Drawings
FIG.1: A top-down structural schematic diagram of the present invention.
FIG.2: An enlarged structural schematic diagram of area A in FIG.1.
FIG.3: A front-view structural schematic diagram of the present invention.
FIG.4: An enlarged structural schematic diagram of area B in FIG.3.
FIG.5: A structural schematic diagram of the internal structure of the heat pump — hot and cold fluid supply device.
In the Figures: 1. Base box; 2. Heat pump body; 3. Heat pump hot and cold fluid supply device; 4. Front and rear aluminum heat exchange plates; 5. First connecting pipe; 6. Buffer plate; 7. Lithium battery module body; 8. Telescopic rod; 9. Guide block; 10.
Fixing base; 11. Spring; 12. Guide groove; 13. Transmission belt; 14. Cooling fan blade; 15. Driving motor; 16. Heat dissipation chamber; 17. Transmission wheel; 18.
Transmission rod; 19. Magnetic iron frame; 20. Magnetic suction stone; 21. Dustproof mesh; 22. Assembly port; 23. Second connecting pipe; 24. Condenser; 25. Heat exchanger; 26. Compressor; 27. Control device.
Detailed Embodiments 0509618
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by those 5 of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
Please refer to FIGs. 1-5. The present invention provides an embodiment of a thermal management device for lithium battery modules, comprising a base box 1, front and rear aluminum heat exchange plates 4, a buffer plate 6, and the lithium battery module body 7. The top of the base box 1 is equipped with a heat pump hot and cold fluid supply device 3 and the lithium battery module body 7. Aluminum heat exchange plates 4 are installed on both the front and rear sides of the lithium battery module body 7. Fixing bases 10 are secured to the front and rear surfaces of the heat pump hot and cold fluid supply device 3 and the aluminum heat exchange plates 4. Inside the fixing bases 10, telescopic rods 8 are connected via springs 11. The telescopic rods 8 extend to the exterior of the fixing bases 10 and are connected to the buffer plate 6. Both sides inside the fixing bases 10 are connected to guide grooves 12. Both sides of the end of each telescopic rod 8 inside the fixing bases 10 are connected to guide blocks 9 matching the guide grooves 12. The expansion of the springs 11 and the guided sliding of the guide blocks 9 along the guide grooves 12 assist the telescopic rods 8 in stable reciprocating motion, allowing the buffer plate 6 to absorb external impact forces. This configuration provides effective protection for the heat pump hot and cold fluid supply device 3, the front and rear aluminum heat exchange plates 4, and the lithium battery module body 7, significantly improving their service life.
The heat pump hot and cold fluid supply device 3 includes a heat pump body 2, a condenser 24, a heat exchanger 25, and a compressor 26.
The heat pump body 2 is connected to one side of the two front and rear aluminum heat exchange plates 4 through a first connecting pipe 5.
The heat exchanger 25 is connected to the heat pump body 2 and the first connecting pipe 5 through a second connecting pipe 23.
The compressor 26 communicates with the heat pump body 2 via the second LUS09618 connecting pipe 23.
The front surface of the base box 1 is equipped with a control device 27.
The interior of the base box 1 is connected to a heat dissipation chamber 16. A driving motor 15 is installed in the middle of the heat dissipation chamber 16. The arrangement and combined use of a transmission belt 13, cooling fan blades 14, the driving motor 15, transmission wheels 17, and transmission rods 18 enable the three cooling fan blades 14 to rotate synchronously, achieving efficient air-cooled operation and further enhancing the cooling performance of the lithium battery module body 7.
Both sides of the heat dissipation chamber 16 are connected to transmission rods 18. The driving end of the driving motor 15 and the upper ends of the two transmission rods 18 are each fitted with transmission wheels 17. The three transmission wheels 17 are connected by a transmission belt 13. The driving end of the driving motor 15 and the upper ends of the two transmission rods 18 are each connected to cooling fan blades 14.
Both sides of the base box 1 are connected to assembly ports 22. Each assembly port 22 is equipped with a dustproof mesh 21 and a magnetic suction stone 20. The outer surface of the dustproof mesh 21 is fitted with a magnetic iron frame 19. The dustproof mesh 21 isolates dust in the circulating air during heat exchange operations, preventing interference with the operation of the cooling fan blades 14.
The magnetic iron frame 19 and the magnetic suction stone 20 ensure that the dustproof mesh 21 is stably mounted within the assembly port 22, facilitating convenient disassembly and cleaning during maintenance.
During operation of the present invention: the first connecting pipe 5 enables the heat pump hot and cold fluid supply device 3 to supply hot or cold fluid to the two front and rear aluminum heat exchange plates 4 for cooling or heating operations. When the control device 27 detects that the temperature of the lithium battery module body 7 exceeds a preset value, the heat pump body 2 activates the cooling mode and supplies glycol solution at a preset temperature through the first connecting pipe 5 to the front and rear aluminum heat exchange plates 4, cooling the lithium battery module body 7.
Conversely, when the control device 27 detects that the temperature of the lithium battery module body 7 is 20°C, the heat pump body 2 activates the heating mode and 0509618 supplies glycol at 30°C to the front and rear aluminum heat exchange plates 4, heating the lithium battery module body 7. This configuration maintains the lithium battery module body 7 at an optimal operating temperature, effectively improving its charging and discharging performance and extending its service life.

Claims (8)

1. A thermal management device for lithium battery modules, characterized by comprising a base box (1), front and rear aluminum heat exchange plates (4), a buffer plate (6), and the lithium battery module body (7). The top of the base box (1) is equipped with a heat pump hot and cold fluid supply device (3) and the lithium battery module body (7). Aluminum heat exchange plates (4) are installed on both the front and rear sides of the lithium battery module body (7). Fixing bases (10) are secured to the front and rear surfaces of both the heat pump hot and cold fluid supply device (3) and the aluminum heat exchange plates (4). Inside the fixing bases (10), telescopic rods (8) are connected via springs (11). The telescopic rods (8) extend to the exterior of the fixing bases (10) and are connected to the buffer plate (6). Both sides inside the fixing bases (10) are connected to guide grooves (12). Both sides of the end of each telescopic rod (8) inside the fixing bases (10) are connected to guide blocks (9) matching the guide grooves (12).
2. The thermal management device for lithium battery modules according to claim 1, characterized in that the heat pump hot and cold fluid supply device (3) comprises a heat pump body (2), a condenser (24), a heat exchanger (25), and a compressor (26).
3. The thermal management device for lithium battery modules according to claim 2, characterized in that the heat pump body (2) is connected to one side of the two front and rear aluminum heat exchange plates (4) through a first connecting pipe (5).
4. The thermal management device for lithium battery modules according to claim 2, characterized in that the heat exchanger (25) is connected to the heat pump body (2) and the first connecting pipe (5) through a second connecting pipe (23).
5. The thermal management device for lithium battery modules according to claim LUS09618 2, characterized in that the compressor (26) communicates with the heat pump body (2) through the second connecting pipe (23).
6. The thermal management device for lithium battery modules according to claim 1, characterized in that the front surface of the base box (1) is equipped with a control device (27).
7. The thermal management device for lithium battery modules according to claim 6, characterized in that the interior of the base box (1) is connected to a heat dissipation chamber (16). A driving motor (15) is installed in the middle of the heat dissipation chamber (16). Both sides of the heat dissipation chamber (16) are connected to transmission rods (18). The driving end of the driving motor (15) and the upper ends of the two transmission rods (18) are each fitted with transmission wheels (17). The three transmission wheels (17) are connected by a transmission belt (13). The driving end of the driving motor (15) and the upper ends of the two transmission rods (18) are each connected to cooling fan blades (14).
8. The thermal management device for lithium battery modules according to claim 7, characterized in that both sides of the base box (1) are connected to assembly ports (22). Each assembly port (22) is equipped with a dustproof mesh (21) and a magnetic suction stone (20). The outer surface of the dustproof mesh (21) is fitted with a magnetic iron frame (19).
LU509618A 2025-01-06 2025-01-06 Thermal management device for lithium battery modules LU509618B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
LU509618A LU509618B1 (en) 2025-01-06 2025-01-06 Thermal management device for lithium battery modules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU509618A LU509618B1 (en) 2025-01-06 2025-01-06 Thermal management device for lithium battery modules

Publications (1)

Publication Number Publication Date
LU509618B1 true LU509618B1 (en) 2025-07-07

Family

ID=96308184

Family Applications (1)

Application Number Title Priority Date Filing Date
LU509618A LU509618B1 (en) 2025-01-06 2025-01-06 Thermal management device for lithium battery modules

Country Status (1)

Country Link
LU (1) LU509618B1 (en)

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FG Patent granted

Effective date: 20250707