CN113437449A - Lithium battery high-temperature protection structure and lithium battery - Google Patents
Lithium battery high-temperature protection structure and lithium battery Download PDFInfo
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- CN113437449A CN113437449A CN202110789773.2A CN202110789773A CN113437449A CN 113437449 A CN113437449 A CN 113437449A CN 202110789773 A CN202110789773 A CN 202110789773A CN 113437449 A CN113437449 A CN 113437449A
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to 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
- H01M10/61—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
- H01M10/63—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
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
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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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- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The utility model belongs to the technical field of the battery protection technique and specifically relates to a lithium cell high temperature protective structure and lithium cell is related to, and it includes protective housing, protective housing is inside to offer the cavity that is used for depositing the lithium cell, be provided with the rack that is used for placing the lithium cell in the cavity, protective housing's one side run through to the opening has been seted up to the cavity, just the opening part is installed and is used for opening and close the open-ended dodge gate, protective housing's one end is provided with radiator fan, protective housing's other end correspondence is provided with into the wind gap, the inside heat absorption subassembly that is used for the endotherm that is provided with of cavity. The application has the effect of improving the heat dispersion performance of the lithium battery pack.
Description
Technical Field
The application relates to the technical field of battery protection, in particular to a high-temperature protection structure of a lithium battery and the lithium battery.
Background
A lithium battery is a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a positive/negative electrode material.
In the related art, a lithium battery pack is formed by combining a plurality of lithium batteries. Specifically, a plurality of lithium batteries are arranged and installed in a container box to form a lithium battery pack for providing power for equipment.
In view of the above-mentioned related technologies, the inventor believes that in the using process of the lithium battery pack, due to the sealed container box environment and the arrangement of the plurality of lithium batteries in combination, the accommodation affects the heat dissipation of the lithium battery pack, so that the internal temperature of the container box is too high, and the lithium battery pack is used in the too high temperature environment for a long time, which is easy to affect the service life of the lithium battery.
Disclosure of Invention
In order to improve the heat dispersion of lithium cell group, this application provides a lithium cell high temperature protective structure and lithium cell.
The application provides a lithium cell high temperature protective structure and lithium cell adopts following technical scheme:
the first aspect, a lithium cell high temperature protective structure, including protective housing, the inside cavity that is used for depositing the lithium cell of seting up of protective housing, be provided with the rack that is used for placing the lithium cell in the cavity, one side of protective housing run through to the opening has been seted up to the cavity, just the opening part is installed and is used for opening and close the open-ended dodge gate, protective housing's one end is provided with radiator fan, protective housing's the other end correspondence is provided with into the wind gap, the inside heat absorption subassembly that is used for the endotherm that is provided with of cavity.
Through adopting above-mentioned technical scheme, the during operation, lithium cell group produced heat, starts radiator fan this moment, and radiator fan can absorb the inside air escape outside of cavity for outside air enters into the cavity from going into the wind gap in, thereby exchanges the inside air of cavity, and then can accelerate the exchange rate of air around the lithium cell, finally is favorable to improving the heat dispersion of lithium cell group.
Optionally, the heat absorption assembly comprises a heat conduction copper pipe and a radiator, the radiator is installed in the cavity and located on one side of the cavity, the radiator is far away from one end of the radiator, and the other end of the heat conduction copper pipe is installed at the bottom of the placing frame in a bifurcated shape and is abutted to the bottom of the lithium battery.
Through adopting above-mentioned technical scheme, the heat conduction copper pipe sets up with the cooperation of radiator, can transmit the heat that the lithium cell produced through the bottom of lithium cell through the heat conduction copper pipe, then transmits radiator department and dispels the heat to the radiator through radiator fan, is favorable to accelerating the heat that produces the lithium cell and transmits to be favorable to further improving the heat dispersion of lithium cell.
Optionally, the heat conducting copper pipe is filled with cooling liquid.
Through adopting above-mentioned technical scheme, the setting of coolant liquid can improve the inside thermal mobility of heat conduction copper pipe to be favorable to improving heat conduction copper pipe and to thermal transmission efficiency.
Optionally, the inner side wall of the protective casing is fixedly provided with a heat insulation layer.
Through adopting above-mentioned technical scheme, the setting of insulating layer can cut off the heat of the inside production of cavity to it takes place to have reduced the excessive condition of loosing everywhere of heat, thereby is favorable to improving radiator fan to the radiating efficiency of the inside heat of cavity.
Optionally, the air inlet is provided with a dust screen.
Through adopting above-mentioned technical scheme, the setting of dust screen can reduce the dust in the air and enter into the inside condition of cavity and take place, is favorable to reducing the condition emergence that the lithium cell abnormal heating that causes because of the inside deposition of cavity.
Optionally, the heat conducting copper pipe is installed in a gap between one end of the heat sink and the heat sink, and heat conducting silicone grease is filled in the gap.
Through adopting above-mentioned technical scheme, the gap that can be with between heat conduction copper pipe and the radiator is filled in the setting of heat conduction silicone grease to be favorable to improving the efficiency that the heat transmitted the radiator through heat conduction copper pipe.
Optionally, a heat dissipation portion is arranged on one side of the heat sink facing the heat dissipation fan in a fin shape.
Through adopting above-mentioned technical scheme, the area of contact of radiator and air can be improved in the setting of radiating part to be favorable to the scattered heat of heat dissipation gas.
Optionally, a sealing strip is disposed on the periphery of the movable door.
Through adopting above-mentioned technical scheme, the setting of sealing strip can increase the activity door and close open-ended leakproofness to be favorable to improving protective housing's dustproof effect.
Optionally, a positioning block is fixed on the side wall of the movable door facing the inner cavity, and the positioning block is used for abutting against the lithium battery.
Through adopting above-mentioned technical scheme, the setting of locating piece can support tightly to the lithium cell to be favorable to improving the stability that the lithium cell was placed.
In a second aspect, a lithium battery includes the above lithium battery high temperature protection structure, which is characterized in that it includes a battery body, a positioning groove is provided on a side wall of the battery body, and the positioning block is adapted to the positioning groove.
Through adopting above-mentioned technical scheme, the constant head tank that battery body seted up can with locating piece looks adaptation to play the effect of location when being favorable to placing the lithium cell.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the lithium battery pack generates heat during working, the cooling fan is started at the moment, and the cooling fan can absorb air in the cavity and exhaust the air out of the cavity, so that the external air enters the cavity from the air inlet, the air in the cavity is exchanged, the exchange speed of the air around the lithium battery can be increased, and the cooling performance of the lithium battery pack is improved;
2. the heat conducting copper pipe and the radiator are arranged in a matched mode, heat generated by the lithium battery can be transmitted through the heat conducting copper pipe through the bottom of the lithium battery, then the heat is transmitted to the radiator, and the radiator is cooled through the cooling fan, so that the heat generated by the lithium battery can be transmitted quickly, and the heat dissipation performance of the lithium battery can be further improved;
3. the cooperation setting of locating piece and constant head tank, the effect of the location that can the person of facilitating the use played at the in-process of placing the lithium cell also is favorable to improving the stability that the lithium cell was placed.
Drawings
Fig. 1 is a partial structural sectional view of a lithium battery high temperature protection structure and a lithium battery according to the present application.
Fig. 2 is a side view of a high temperature protection structure for a lithium battery of the present application.
Fig. 3 is a schematic diagram of the overall structure of a lithium battery of the present application.
Description of reference numerals: 1. a battery body; 2. a protective housing; 3. a movable door; 4. a cavity; 5. placing a rack; 51. a support leg; 52. a frame body; 6. a sealing strip; 7. a card slot; 8. positioning blocks; 9. positioning a groove; 10. an air inlet; 11. a heat radiation fan; 12. a dust screen; 13. a heat conducting copper pipe; 14. a heat sink; 141. a heat dissipating section; 15. an insulating layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
In a first aspect, an embodiment of the present application further discloses a lithium battery. Referring to fig. 1, a lithium battery includes a battery body 1. The outside of the battery body 1 is provided with a lithium battery high-temperature protection structure for placing the battery body 1.
In a second aspect, an embodiment of the present application discloses a high temperature protection structure for a lithium battery. Referring to fig. 2, a lithium cell high temperature protective structure includes protective housing 2, protective housing 2 is inside to be offered the cavity 4 that is used for depositing battery body 1, the inside rack 5 that is used for placing battery body 1 that is provided with of cavity 4, protective housing 2's one side runs through to having offered the opening in cavity 4, and the opening part is installed and is used for opening and close open-ended dodge gate 3, protective housing 2's one end is provided with radiator fan 11, protective housing 2's the other end correspondence is provided with into wind gap 10, the inside heat absorption subassembly that is used for the endotherm that is provided with of cavity 4.
During operation, 1 group of battery body produces the heat, and the subassembly that absorbs heat this moment can absorb the partial heat that battery body 1 produced, then outside discharge of heat protective housing 2 through radiator fan 11 to can accelerate the exchange speed of the air around the lithium cell group, be favorable to improving the heat dispersion of lithium cell group.
Referring to fig. 2, one end of the movable door 3 is hinged to the side wall of the protective housing 2, and the other end of the movable door 3 is in clamping fit with the side wall of the protective housing 2 through a buckle. The function of the movable door 3 for opening and closing the opening is realized.
Further, a weather strip 6 is bonded to the peripheral side of the movable door 3, and the weather strip 6 is made of a rubber material. The sealing strip 6 is arranged, so that the sealing performance of the opening of the movable door 3 can be improved, and the dustproof effect of the protective shell 2 is improved.
Referring to fig. 2, the rack 5 includes a support leg 51 and a rack body 52 horizontally disposed. One end of the supporting leg 51 is fixedly connected with the bottom surface of the cavity 4, and the other end of the supporting leg 51 is fixedly connected with the frame body 52 for supporting the frame body 52 away from the bottom surface of the cavity 4. The top surface of the frame body 52 is provided with a plurality of clamping grooves 7 for clamping the battery body 1, and the clamping grooves 7 are arranged along the length direction of the frame body 52. The battery body 1 is partially clamped in the clamping groove 7, and the other part of the battery body 1 is displaced from the top of the frame body 52.
Further, the bottom of the slot 7 penetrates the bottom of the frame 52 to form a heat dissipation opening, and the width of the heat dissipation opening is smaller than that of the bottom of the slot 7. This arrangement is advantageous for improving the heat dissipation efficiency of the frame body 52.
Referring to fig. 1 and 2, in order to improve the stability of the battery body 1 installed in the clamping groove 7, a positioning block 8 is fixed on the side wall of the movable door 3 facing the inner cavity, and one side of the positioning block 8 away from the movable door 3 is in an arc shape. The side wall of the battery body 1 is correspondingly provided with a positioning groove 9, and the positioning groove 9 is matched with the positioning block 8 in shape.
Referring to fig. 2 and 3, a heat dissipation fan 11 is installed at one end of the protective housing 2 adjacent to the movable door 3, the heat dissipation fan 11 is communicated with the cavity 4, and the heat dissipation fan 11 is electrically connected with the lithium battery. The heat radiation fan 11 is for extracting air inside the cavity 4. An air inlet 10 is correspondingly formed at one end of the protective shell 2 far away from the heat dissipation fan 11, so that circulation is formed with one end of the heat dissipation fan 11, and the heat dissipation performance of the cavity 4 is improved.
Further, the dust screen 12 is installed at the air inlet 10, so that the dust in the air can be reduced to enter the cavity 4, and the abnormal heating of the lithium battery caused by accumulation of the dust can be reduced.
Referring to fig. 2, the heat absorbing assembly includes a heat conducting copper pipe 13 and a heat sink 14, the heat sink 14 is fixedly mounted at the bottom of the cavity 4, and the heat sink 14 is located at a side of the heat dissipating fan 11 facing the cavity 4. In order to improve the heat dissipation effect of the heat sink 14, the heat dissipation portion 141 is fin-shaped on the side of the heat sink 14 facing the heat dissipation fan 11, so that the contact area between the heat dissipation portion 141 and the air can be increased, which is advantageous for improving the heat dissipation effect of the heat sink 14. One end of the heat conducting copper pipe 13 is fixedly connected with one end of the radiator 14 far away from the radiator fan 11 through screws, and gaps between the heat conducting copper pipe 13 and the radiator 14 are filled with heat conducting silicone grease for improving heat conduction. The other end of heat conduction copper pipe 13 is the branching form setting, and a plurality of branches of heat conduction copper pipe 13 correspond the setting respectively in a plurality of heat dissipation departments to fixed mutually with the cell wall of draw-in groove 7, be used for with the bottom looks butt of battery body 1, thereby dredge the heat that battery body 1 during operation produced.
Further, the inside of the heat conducting copper pipe 13 is filled with a cooling liquid, and the cooling liquid mainly comprises ethylene glycol. The cooling liquid can improve the heat fluidity in the copper pipe, thereby being beneficial to improving the heat transfer efficiency of the copper pipe.
Referring to fig. 2, in order to improve the heat dissipation efficiency of the heat dissipation fan 11, heat insulation layers 15 are bonded to the inner side of the protective housing 2 and the side wall of the movable door 3 facing the cavity 4, and the heat insulation layer 15 on one side of the movable door 3 is correspondingly provided with a clearance for the positioning block 8 to pass through. The heat insulation layer 15 is made of sponge material, so that the heat can be effectively concentrated in the cavity 4 and can be intensively discharged by the heat radiation fan 11. Meanwhile, the heat insulation layer 15 has the shock absorption and buffering functions and can protect the battery body 1, the heat insulation layer 15 has the flame-retardant function, and fire accidents caused by high-temperature spontaneous combustion of the battery body 1 can be reduced.
The implementation principle of the high-temperature protection structure of the lithium battery in the embodiment of the application is as follows:
during the installation, earlier with battery body 1 joint in draw-in groove 7 to make the constant head tank 9 of battery body 1 one side towards opening one side, then rotate the closed opening of fly leaf, make locating piece 8 and the cooperation of constant head tank 9 joint, accomplish the fixed to battery body 1, fix dodge gate 3 through the buckle at last, thereby accomplish the installation to protective housing 2, play the effect of protection to battery body 1.
When the battery body 1 supplies power, the heat generated by the battery body 1 can be dissipated through the heat dissipation fan 11, and meanwhile, the heat conduction copper pipe 13 at the bottom of the battery body 1 can also be used for dredging the heat generated by the battery body 1 in cooperation with the heat radiator 14, so that the heat dissipation efficiency of the battery body 1 is further improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a lithium cell high temperature protective structure which characterized in that: including protective housing (2), inside cavity (4) that are used for depositing the lithium cell of seting up of protective housing (2), be provided with rack (5) that are used for placing the lithium cell in cavity (4), one side of protective housing (2) runs through to the opening has been seted up in cavity (4), just the opening part is installed and is used for opening and close open-ended dodge gate (3), the one end of protective housing (2) is provided with radiator fan (11), the other end correspondence of protective housing (2) is provided with into wind gap (10), cavity (4) inside is provided with and is used for endothermic heat absorption subassembly.
2. The high temperature protection structure of a lithium battery as claimed in claim 1, wherein: the heat absorption assembly comprises a heat conduction copper pipe (13) and a radiator (14), the radiator (14) is installed in the cavity (4) and located towards the heat radiation fan (11) on one side of the cavity (4), one end of the heat conduction copper pipe (13) is installed, the radiator (14) is far away from one end of the heat radiation fan (11), and the other end of the heat conduction copper pipe (13) is installed at the bottom of the placing frame (5) in a bifurcated mode and is abutted to the bottom of the lithium battery.
3. The high temperature protection structure of a lithium battery as claimed in claim 2, wherein: and the heat conducting copper pipe (13) is filled with cooling liquid.
4. The high temperature protection structure of a lithium battery as claimed in claim 1, wherein: and a heat insulation layer (15) is fixedly arranged on the inner side wall of the protective shell (2).
5. The high temperature protection structure of a lithium battery as claimed in claim 1, wherein: and the air inlet (10) is provided with a dust screen (12).
6. The high temperature protection structure of a lithium battery as claimed in claim 2, wherein: and a gap between one end of the heat-conducting copper pipe (13) arranged on the radiator (14) and the radiator (14) is filled with heat-conducting silicone grease.
7. The high temperature protection structure of a lithium battery as claimed in claim 2, wherein: the side of the radiator (14) facing the radiating fan (11) is provided with a radiating part (141) in a fin shape.
8. The high temperature protection structure of a lithium battery as claimed in claim 1, wherein: sealing strips (6) are arranged on the peripheral sides of the movable doors (3).
9. The high temperature protection structure of a lithium battery as claimed in claim 1, wherein: a positioning block (8) is fixed on the side wall of one side, facing the inner cavity, of the movable door (3), and the positioning block (8) is used for abutting against the lithium battery.
10. A lithium battery comprising a lithium battery high temperature protection structure as claimed in any one of claims 1 to 9, characterized in that: the battery pack comprises a battery body (1), wherein a positioning groove (9) is formed in the side wall of one side of the battery body (1), and a positioning block (8) is matched with the positioning groove (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110789773.2A CN113437449A (en) | 2021-07-13 | 2021-07-13 | Lithium battery high-temperature protection structure and lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110789773.2A CN113437449A (en) | 2021-07-13 | 2021-07-13 | Lithium battery high-temperature protection structure and lithium battery |
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| CN212991200U (en) * | 2020-09-24 | 2021-04-16 | 天津瑞意天诚科技有限公司 | Lithium cell prevents leaking protective housing |
| CN213124561U (en) * | 2020-10-13 | 2021-05-04 | 大连盛鑫缘锂电科技有限公司 | Heat abstractor for lithium cell |
| CN112290154A (en) * | 2020-10-29 | 2021-01-29 | 株洲瑞尔泰机电科技有限公司 | New energy automobile battery installation device |
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