CN220527003U - Explosion-proof top cap of lithium ion battery with cooling function - Google Patents

Abstract

The utility model provides an explosion-proof top cover of a lithium ion battery with a cooling function, which relates to the technical field of lithium batteries and comprises a battery cover main body, wherein a semiconductor refrigerating sheet is embedded into the top surface of the battery cover main body, an air deflector is arranged in the battery cover main body, air deflector surfaces are uniformly distributed in an array manner, air deflector bottom surfaces are provided with a first limit strip and a second limit strip, the bottom surfaces of the first limit strip and the second limit strip are both provided with temperature sensing strips, the surfaces of the temperature sensing strips are provided with temperature sensing patches, the temperature sensing patches are electrically connected with a temperature display, the temperature sensing patches are used for sensing the temperature of a designated area of the lithium ion battery, the first limit strip or the second limit strip of a corresponding area is pulled out when the temperature is higher, air guiding and cooling are carried out, the rapid cooling of the local area inside the lithium ion battery is realized, the battery cover main body is effectively prevented from bursting due to overhigh temperature, the explosion-proof effect is good, and the rapid cooling is effectively avoided.

Description

Explosion-proof top cap of lithium ion battery with cooling function

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to an explosion-proof top cover of a lithium ion battery with a cooling function.

Background

According to the explosion-proof valve for the lithium ion battery top cover disclosed in the Chinese patent No. CN215869680U, the explosion-proof valve comprises an explosion-proof matrix, wherein an explosion-proof sheet, a top patch and an intermediate film are arranged in the explosion-proof matrix, the intermediate film is arranged between the explosion-proof sheet and the top patch, the explosion-proof sheet and the top patch are respectively fixedly connected with the explosion-proof matrix, the intermediate film is a high polymer film with a biological structure, and the thickness of the intermediate film is 0.2-0.5mm; the intermediate film can effectively penetrate through the gas generated by internal short circuit of the lithium ion battery, and the phenomenon that the electrolyte and the solid particles cannot pass through the gas, the liquid and the particles cannot pass through the intermediate film.

The following technical problems exist in the above-mentioned comparison document and the prior art: when the explosion-proof top cover of the lithium ion battery is used, the problem that the top cover bursts due to high temperature of the lithium ion battery cannot be solved because the explosion-proof buffer is only carried out by arranging the film, and the rapid centralized cooling treatment cannot be carried out on the top cover and the lithium ion battery.

Disclosure of Invention

The utility model aims to solve the defect that the explosion of a lithium ion battery top cover cannot be overcome due to high temperature in the prior art, and provides the lithium ion battery explosion-proof top cover with a cooling function.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an explosion-proof top cap of lithium ion battery with cooling function, includes the battery cover main part, battery cover main part top surface embedding is equipped with the semiconductor refrigeration piece, the inside aviation baffle that is equipped with of battery cover main part, aviation baffle surface even array distributes and is equipped with the wind guiding hole, the aviation baffle bottom surface is equipped with first spacing and second spacing, and first spacing and second spacing edge mutually block, first spacing and second spacing one end all imbeds and are equipped with temperature display, first spacing and second spacing bottom surface all are equipped with temperature sensing strip, temperature sensing strip surface is equipped with the temperature sensing paster, temperature sensing paster and temperature display electric connection.

Preferably, a refrigerating cavity is arranged between the top surface of the air deflector and the top surface inside the battery cover main body, a conducting cavity is arranged between the bottom surface of the air deflector and the bottom surface of the battery cover main body, and the first limiting strip and the second limiting strip are both positioned inside the conducting cavity.

Preferably, the top surface of the battery cover main body is embedded with an object placing grid plate, the bottom surface of the semiconductor refrigerating sheet is bolted with the top surface of the object placing grid plate, the top surface of the battery cover main body is embedded with a ventilation window, and the ventilation window is positioned at the top of the semiconductor refrigerating sheet.

Preferably, the inside central point of battery cover main part puts the slip embedding and is equipped with the bearing crossbearer, and bearing crossbearer one end runs through with battery cover main part one side, and bearing crossbearer top surface and aviation baffle bottom surface coplane, first spacing and second spacing symmetric distribution are in bearing crossbearer both sides.

Preferably, the edges of the first limiting strip and the second limiting strip are mutually clamped, the side faces of the first limiting strip and the second limiting strip are mutually clamped with the side face of the inner wall of the battery cover main body, and the first limiting strip and the second limiting strip penetrate through one side of the battery cover main body.

Preferably, the first limit bars and the second limit bars are alternately distributed according to a ratio of 1:1, and the heights of the first limit bars and the second limit bars are the same.

Preferably, the four corners of the top surface of the battery cover main body are provided with positioning pin holes, the side surface of the semiconductor refrigeration piece is provided with an electric connection circuit, and one end of the electric connection circuit penetrates through the surface of the bearing transverse frame along the vertical direction.

Advantageous effects

According to the utility model, the semiconductor refrigerating sheet is embedded into the top surface of the battery cover main body to provide a refrigerating environment, the air guide cooling treatment is carried out through the air guide holes on the surface of the air guide plate, the temperature sensing patch is used for sensing the temperature of the appointed area of the lithium ion battery, the first limit strip or the second limit strip of the corresponding area is extracted when the temperature is higher, the air guide cooling is carried out, the rapid cooling of the local area inside the lithium ion battery is realized, meanwhile, the explosion caused by the overhigh temperature of the battery cover main body is effectively prevented, the explosion-proof effect is good, the high-temperature environment is effectively avoided, and the rapid cooling is realized.

Drawings

FIG. 1 is an isometric view of the present utility model;

fig. 2 is a view showing the construction of the inner part of the battery cover main body of the present utility model;

FIG. 3 is a front cross-sectional view of the present utility model;

fig. 4 is a perspective view of the present utility model.

Legend description:

1. a battery cover main body; 2. a storage grid plate; 3. a ventilation window; 4. a semiconductor refrigeration sheet; 5. a power connection circuit; 6. positioning pin holes; 7. an air deflector; 8. an air guide hole; 9. a refrigerating chamber; 10. a conductive cavity; 11. a bearing cross frame; 12. a first limit bar; 13. the second limit bar; 14. a temperature display; 15. a temperature sensor strip; 16. a temperature sensing patch.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model.

Specific embodiments of the present utility model are described below with reference to the accompanying drawings.

First embodiment:

referring to fig. 1-4, an explosion-proof top cover of lithium ion battery with cooling function, including battery cover main part 1, battery cover main part 1 top surface embedding is equipped with semiconductor refrigeration piece 4, the whole device is mainly through the provision of cooling environment for the circular telegram of semiconductor refrigeration piece 4, battery cover main part 1 bottom need with outside lithium ion battery surface connection use when in service, battery cover main part 1 top surface embedding is equipped with puts thing grid tray 2, semiconductor refrigeration piece 4 bottom surface and put thing grid tray 2 top surface bolting, battery cover main part 1 top surface embedding is equipped with ventilation window 3, and ventilation window 3 is located semiconductor refrigeration piece 4 top, semiconductor refrigeration piece 4 keeps refrigerated one side and put thing grid tray 2 surface contact when the installation, make circular telegram time semiconductor refrigeration piece 4 refrigerate the air of putting thing grid tray 2 bottom that contacts, owing to be equipped with refrigerating chamber 9 between aviation baffle 7 top surface and the inside top surface of battery cover main part 1, be equipped with conduction chamber 10 between aviation baffle 7 bottom surface and the battery cover main part 1 bottom surface, make refrigerated air store in the inside refrigerating chamber 9 of battery cover main part 1, conduction chamber 10 is used for carrying the lithium ion battery in the inside chamber 9, it can carry out the lithium ion battery in the interior to carry out the cooling chamber, it carries out the cooling chamber to cool air to carry out the lithium ion battery in the battery, the sealed air cooling chamber is cooled down in the air chamber, the battery is cooled down in the air chamber is kept in the air chamber 1, the realization is cooled down, the air is cooled down in the battery is sealed in the air chamber is cooled down to the air chamber is fast to the air chamber 1.

When the lithium ion battery on the battery cover main body 1 and the bottom thereof is cooled, because the air deflector 7 is arranged in the battery cover main body 1, the air guide holes 8 are uniformly distributed on the surface of the air deflector 7 in an array, the bottom surface of the air deflector 7 is provided with a first limit bar 12 and a second limit bar 13, the edges of the first limit bar 12 and the second limit bar 13 are mutually clamped, the first limit bar 12 and the second limit bar 13 are contacted with the bottom surface of the air deflector 7, the air guide holes 8 on the surface of the air deflector 7 are blocked mainly, the opening and closing of the air guide holes 8 are convenient to control, the flow direction of air in the refrigerating cavity 9 is controlled, the environment on the bottom of the whole battery cover main body 1 is covered by the first limit bar 12 and the second limit bar 13, meanwhile, the bottom surfaces of the first limit bar 12 and the second limit bar 13 are respectively provided with a temperature display 14 in an embedded mode, the bottom surfaces of the first limit bar 12 and the second limit bar 13 are respectively provided with a temperature sensing bar 15, the surface of the temperature sensing strip 15 is provided with a temperature sensing patch 16, the temperature sensing patch 16 is electrically connected with the temperature display 14, the first limiting strip 12 and the second limiting strip 13 are both positioned in the conducting cavity 10, so that the space where the lithium ion battery at the bottom of the battery cover main body 1 is positioned is subjected to regional temperature detection through the temperature sensing strip 15, the detected temperature is transmitted to the surface of the temperature display 14 for display, the temperature is controlled through a set temperature threshold value, after the temperature of the space where the temperature sensing patch 16 at the surface of the temperature sensing strip 15 is detected exceeds the set threshold value, the temperature display 14 is displayed as red, at the moment, the first limiting strip 12 or the second limiting strip 13 in the area where the temperature sensing strip 15 is positioned is extracted along the surface of the battery cover main body 1, the air guide holes 8 corresponding to the surface of the air guide plate 7 at the extracted position are not shielded, air in the refrigerating cavity 9 can enter the conducting cavity 10 through the air guide hole 8 at the position to realize air convection cooling, and the air in the refrigerating cavity 9 can flow out of the air guide hole 8 in a concentrated manner quickly and enter the conducting cavity 10 to realize rapid cooling treatment of the lithium ion battery.

When the battery cover is installed and used on the first limiting strip 12 and the second limiting strip 13, the bearing transverse frame 11 is needed to be arranged in the center position of the inside of the battery cover main body 1 in a sliding embedded mode, one end of the bearing transverse frame 11 penetrates through one side of the battery cover main body 1, the top surface of the bearing transverse frame 11 is coplanar with the bottom surface of the air deflector 7, the first limiting strip 12 and the second limiting strip 13 are symmetrically distributed on two sides of the bearing transverse frame 11, the first limiting strip 12 and the second limiting strip 13 on two sides are guided and limited through the bearing transverse frame 11, the second limiting strip 13 beside the first limiting strip 12 is prevented from being shifted in position due to linkage during sliding extraction, the stability of connection of the first limiting strip 12 and the second limiting strip 13 is kept, the edges of the first limiting strip 12 and the second limiting strip 13 are mutually clamped, the sides of the first limiting strip 12 and the second limiting strip 13 are mutually clamped with the inner wall of the battery cover main body 1, the first limiting strip 12 and the second limiting strip 13 penetrate through one side of the battery cover main body 1, the edges of the first limiting strip 12 and the second limiting strip 13 are prevented from being clamped with the edges of the first limiting strip 12 and the second limiting strip 13, the second limiting strip 13 are prevented from being clamped with each other in a linear mode, and the opposite sliding mode, and the edges are not easy to be connected with each other.

Other limit structures in the whole device are that first limit bar 12 and second limit bar 13 distribute according to 1:1 in turn, first limit bar 12 and second limit bar 13 highly the same, be convenient for first limit bar 12 and the location of second limit bar 13 to battery cover main part 1 bottom, be convenient for carry out quick location to the appointed region, battery cover main part 1 top surface four corners is equipped with location pinhole 6, semiconductor refrigeration piece 4 side is equipped with electric connection line 5, and electric connection line 5 one end runs through with bearing crossbearer 11 surface along vertical direction, semiconductor refrigeration piece 4 bottom is through electric connection line 5 connection power supply and provides the power of whole refrigeration environment, because semiconductor refrigeration piece 4 power is little power consumptive low, can be directly be connected with the lithium ion battery of bottom through electric connection line 5, carry out quick power supply through the lithium ion battery.

Specific embodiment II:

referring to fig. 1 to 4, since the semiconductor refrigerating sheet 4 is embedded in the top surface of the battery cover main body 1, when the cold air generated by refrigerating the air is stored in the refrigerating cavity 9, the battery cover main body 1 is cooled in a contact manner, so that the whole device can directly perform simultaneous cooling and cooling treatment on the battery cover main body 1 and the lithium ion battery environment connected with the bottom when the whole device is cooled.

Third embodiment:

referring to fig. 1-4, the back of the temperature sensing strip 15 is generally adhered to the bottom surfaces of the first limiting strip 12 and the second limiting strip 13 by using nano-glue, and when in actual use, the temperature sensing strip 15 can be adhered to the surface of the lithium ion battery corresponding to the vertical direction of the first limiting strip 12 and the second limiting strip 13 for temperature detection, so that the accuracy is higher, and the adhesion position is according to the actual use field Jing Sheding.

The temperature sensing patch 16 and the temperature display 14 are mainly transmitted through electric signals, and are specifically connected with a circuit structure, and the circuit structure can be set according to actual use situations on the premise of meeting the functions.

To sum up:

adopt battery cover main part 1 top surface embedding semiconductor refrigeration piece 4 to provide the refrigeration environment and carry out wind-guiding cooling treatment through the wind-guiding hole 8 on aviation baffle 7 surface, carry out temperature sensing to the lithium ion battery appointed region through temperature sensing paster 16, take out corresponding regional first spacing 12 or second spacing 13 when the temperature is higher, carry out wind-guiding cooling use, realize the inside regional rapid cooling of lithium ion battery, simultaneously effectively prevent that battery cover main part 1 is too high in temperature and burst, explosion-proof effect is good, effectively avoid high temperature environment, realize rapid cooling.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides an explosion-proof top cap of lithium ion battery with cooling function, includes battery cover main part (1), its characterized in that: the battery cover is characterized in that a semiconductor refrigerating sheet (4) is embedded into the top surface of the battery cover main body (1), air guide plates (7) are arranged inside the battery cover main body (1), air guide holes (8) are formed in the surface of the air guide plates (7) in a uniformly-arrayed mode, first limiting strips (12) and second limiting strips (13) are arranged on the bottom surface of the air guide plates (7), edges of the first limiting strips (12) and edges of the second limiting strips (13) are clamped with each other, temperature displays (14) are embedded into one end of the first limiting strips (12) and one end of the second limiting strips (13), temperature sensing strips (15) are arranged on the bottom surface of the first limiting strips (12) and the bottom surface of the second limiting strips (13), temperature sensing patches (16) are electrically connected with the temperature displays (14), refrigerating cavities (9) are formed between the top surface of the air guide plates (7) and the inner top surface of the battery cover main body (1), temperature displays (10) are arranged between the air guide plates (7) and the bottom surface of the battery cover main body (1), and the first limiting strips (12) and the second limiting strips (13) are located inside the temperature displays (10).

2. The lithium ion battery explosion-proof top cover with cooling function according to claim 1, wherein: the battery cover is characterized in that an object placing grid plate (2) is embedded into the top surface of the battery cover body (1), the bottom surface of the semiconductor refrigerating sheet (4) is bolted with the top surface of the object placing grid plate (2), a ventilation window (3) is embedded into the top surface of the battery cover body (1), and the ventilation window (3) is located at the top of the semiconductor refrigerating sheet (4).

3. The lithium ion battery explosion-proof top cover with cooling function according to claim 1, wherein: the battery cover is characterized in that a bearing transverse frame (11) is arranged in the center of the battery cover body (1) in a sliding manner, one end of the bearing transverse frame (11) penetrates through one side of the battery cover body (1), the top surface of the bearing transverse frame (11) is coplanar with the bottom surface of the air deflector (7), and the first limiting strips (12) and the second limiting strips (13) are symmetrically distributed on two sides of the bearing transverse frame (11).

4. The lithium ion battery explosion-proof top cover with cooling function according to claim 1, wherein: the edges of the first limiting strip (12) and the second limiting strip (13) are mutually clamped, the side faces of the first limiting strip (12) and the second limiting strip (13) are mutually clamped with the side face of the inner wall of the battery cover main body (1), and the first limiting strip (12) and the second limiting strip (13) penetrate through one side of the battery cover main body (1).

5. The lithium ion battery explosion-proof top cover with cooling function according to claim 1, wherein: the first limit strips (12) and the second limit strips (13) are alternately distributed according to a ratio of 1:1, and the heights of the first limit strips (12) and the second limit strips (13) are the same.

6. The explosion-proof top cover with cooling function for lithium ion battery according to claim 3, wherein: the battery cover is characterized in that positioning pin holes (6) are formed in four corners of the top surface of the battery cover main body (1), an electric connection circuit (5) is arranged on the side surface of the semiconductor refrigerating piece (4), and one end of the electric connection circuit (5) penetrates through the surface of the bearing transverse frame (11) along the vertical direction.