CN212676329U

CN212676329U - Heat dissipation lithium cell

Info

Publication number: CN212676329U
Application number: CN202021583532.XU
Authority: CN
Inventors: 马胜利
Original assignee: Hangzhou Haichuang Battery Technology Co ltd
Current assignee: Hangzhou Haichuang Battery Technology Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-09
Anticipated expiration: 2030-08-03

Abstract

The utility model relates to the field of buildings and discloses a heat-dissipation lithium battery, which comprises a battery cover plate, the battery cover plate is rectangular plate-shaped, the edge of the lower wall surface of the battery cover plate is fixedly provided with a battery inner shell, the inner part of the battery inner shell is of a hollow structure, the hollow part of the inner part of the battery inner shell penetrates through the upper wall surface of the battery inner shell to the inner part of the battery inner shell, the battery outer shell is fixedly arranged on the position of the lower wall surface of the battery cover plate, which corresponds to the outer wall surface of the battery inner shell, when the battery starts to discharge, the heat dissipation lithium battery can generate heat in the battery and diffuse the heat to the inner shell of the battery, the high heat-conducting sheet is adhered on the outer wall surface of the battery inner shell, most of the heat is led out to the water cooling tank, water is injected into the water cooling tank, and the water has the heat absorption function, therefore, the heat in the battery can be conducted away, and the condition that the battery is damaged because the heat in the battery cannot be discharged is avoided.

Description

Heat dissipation lithium cell

Technical Field

The utility model relates to a building field especially relates to a heat dissipation lithium cell.

Background

Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and the safety, specific capacity, self-discharge rate and cost performance of rechargeable batteries were all superior to those of lithium ion batteries. Due to its own high technical requirement limits, only a few countries of companies are producing such lithium metal batteries.

The existing lithium battery, no matter lithium metal or lithium ion battery, can generate a large amount of heat due to the fact that resistance exists in materials, if the heat is not conducted away in time, the service life of the battery can be damaged, and explosion can be caused in the serious case.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model mainly solves the technical problem existing in the prior art and provides a heat dissipation lithium battery.

(II) technical scheme

In order to achieve the above object, the present invention adopts the following technical solution, a heat-dissipating lithium battery, comprising a battery cover plate, wherein the battery cover plate is rectangular, a battery inner shell is fixedly mounted at the edge of the lower wall surface of the battery cover plate, the interior of the battery inner shell is of a hollow structure, the hollow portion of the interior of the battery inner shell penetrates through the upper wall surface of the battery inner shell to the interior of the battery inner shell, a battery outer shell is fixedly mounted at the position of the lower wall surface of the battery cover plate corresponding to the outer wall surface of the battery inner shell, the outer wall surface of the battery outer shell corresponds to the inner wall surface of the battery inner shell but is not attached to the inner wall surface, a water cooling tank is formed between the battery inner shell and the battery outer shell, the shape of the water cooling tank is matched with the shape of the corresponding position of the battery inner shell and the battery outer shell, a, the inside intermediate position fixed mounting of battery inner shell has the diaphragm, the battery inner shell passes through the diaphragm and separates battery inner shell internal partitioning for bilateral symmetry's two parts, the inside left and right sides of battery inner shell is provided with the electrode bar respectively, the one end fixed mounting that the inside diapire of battery inner shell was kept away from to the electrode bar has electrode ear, the electrode notch has been seted up on the left and right sides of battery apron corresponds the position of electrode ear, and the electrode notch is the rectangle through-hole.

Preferably, the electrode lugs are arranged in the electrode notches and extend upwards to the upper end of the battery cover plate, vent grooves are formed in the positions, corresponding to the diaphragms, of the lower wall surface of the battery cover plate, the vent grooves are rectangular through holes, and the two groups of electrode notches are symmetrical with the vent grooves in the left-right center mode.

Preferably, the left side wall surface and the right side wall surface of the vent groove are provided with clamping grooves, the corresponding positions of the clamping grooves are provided with vent cover plates, the vent cover plates are inverted U-shaped, and the shapes of the left end and the right end of the vent cover plates are matched with the shapes of the clamping grooves.

Preferably, four groups of springs are fixedly mounted on the lower wall surface of the vent cover plate, sealing plates are fixedly mounted on positions, corresponding to the vent cover plate, of the left side wall surface and the right side wall surface of the vent groove, the sealing plates are rectangular plate-shaped, and one ends, far away from the vent cover plate, of the four groups of springs are connected with the sealing plates.

Advantageous effects

The utility model provides a heat dissipation lithium cell. The method has the following beneficial effects:

(1) this heat dissipation lithium cell when the battery begins to discharge, can produce the heat and outside diffusion to the battery inner shell in the inside of battery, and the laminating has high heat conduction piece to derive most to the water-cooling tank by the heat on the outer wall surface of battery inner shell, and it has water to pour into in the water-cooling tank, and water has the heat absorption effect to can lead away the heat of battery inside, avoid the unable emergence of the condition of leading to the fact the battery to damage of discharging of heat in the battery.

(2) This heat dissipation lithium cell, because ageing when the battery, when improper condition takes place, will be in the inside heat that produces of battery, and when these heats can't be led away by the water-cooling tank, the inside air of battery can the rapid expansion, thereby make the air extrusion closing plate in the battery make the closing plate remove the spring that the closing plate compression links to each other with it, thereby it produces thrust on the looks to the cover plate that ventilates to be the spring, when the extrusion of air reaches certain not degree, make the closing plate, outside spring and the cover plate that ventilates all popped out the battery, avoid producing the emergence of the condition that huge heat can't be got rid of and cause the battery explosion in the battery.

(3) This heat dissipation lithium cell because the battery case comprises ectotheca and water-cooling tank, compares in the thickness of general lithium cell battery case thicker, when the battery explodes, has more the security, has certain clearance between battery case and the inner shell for certain cushioning effect occasionally explodes in the battery.

Drawings

Fig. 1 is a schematic view of the overall structure of a lithium battery of the present invention;

FIG. 2 is a schematic view of a partial structure of a battery cover plate according to the present invention;

fig. 3 is a schematic view of the structure of the vent groove of the present invention.

Illustration of the drawings:

1 battery cover plate, 2 water cooling tanks, 3 battery inner shells, 4 electrode bars, 5 electrode lugs, 6 electrode notches, 7 diaphragms, 8 sealing plates, 9 springs, 10 ventilation cover plates, 11 ventilation grooves, 12 clamping grooves, 13 high-heat-conducting fins and 14 battery outer shells.

The specific implementation mode is as follows:

the technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

As shown in fig. 1-fig. 1, a heat dissipation lithium battery includes a battery cover plate 1, the battery cover plate 1 is rectangular plate-shaped, a battery inner casing 3 is fixedly installed at the edge of the lower wall surface of the battery cover plate 1, the inside of the battery inner casing 3 is hollow, the hollow part of the inside of the battery inner casing 3 penetrates through the upper wall surface of the battery inner casing 3 to the inside of the battery inner casing 3, a battery outer casing 14 is fixedly installed at the position of the lower wall surface of the battery cover plate 1 corresponding to the outer wall surface of the battery inner casing 3, the outer wall surface of the battery outer casing 14 corresponds to the inner wall surface of the battery inner casing 3 but is not attached to the inner wall surface, a water cooling tank 2 is formed between the battery inner casing 3 and the battery outer casing 14, the shape of the water cooling tank 2 is matched with the shape of the corresponding position of the battery inner casing 3 and the battery outer casing 14, a high thermal, the high heat-conducting strip 13 is of a conventional structure, which is not described herein in detail, a diaphragm 7 is fixedly installed at a middle position inside the inner battery shell 3, the inner battery shell 3 divides the inside of the inner battery shell 3 into two bilaterally symmetrical parts through the diaphragm 7, electrode rods 4 are respectively installed at left and right sides inside the inner battery shell 3, an electrode tab 5 is fixedly installed at one end of each electrode rod 4 away from the bottom wall inside the inner battery shell 3, the electrode rods 4 and the electrode tabs 5 are of conventional structures, which are not described herein in detail, the connection mode of the electrode rods 4 and the electrode tabs 5 is a conventional connection mode, which is not described herein in detail, electrode notches 6 are formed at positions corresponding to the electrode tabs 5 at left and right sides of the battery cover plate 1, the electrode notches 6 are rectangular through holes, the electrode tabs 5 are arranged inside the electrode notches 6 and extend upward to the upper end of the battery cover plate 1, vent grooves 11 are formed at positions corresponding to the, air channel 11 is the rectangle through-hole, two sets of electrode notch 6 use air channel 11 to be left right centre symmetry, draw-in groove 12 has been seted up on the left and right sides wall face of air channel 11, be provided with ventilation apron 10 on draw-in groove 12 corresponds the position, ventilation apron 10 is "U" shape of falling, the shape at both ends and the mutual adaptation of the shape of draw-in groove 12 about ventilation apron 10, the lower wall fixed mounting of ventilation apron 10 has four group spring 9, spring 9 is current structure, do not do the repeated description here, fixed mounting has closing plate 8 in the position that the left and right sides wall of air channel 11 is corresponding ventilation apron 10 in the face of, closing plate 8 is the rectangular plate form, the one end that ventilation apron 10 was kept away from to four group spring 9 links to each other with closing.

The working principle is as follows:

when the battery is used, the battery discharges, heat is generated in the battery inner shell 3 due to the resistance of materials, the heat is diffused outside through electrolyte in the battery inner shell 3, the high heat-conducting sheet 13 is attached to the outer wall surface of the battery inner shell 3, the high heat-conducting sheet 13 has the function of conducting away the heat of the battery inner shell 3, the high heat-conducting sheet 13 is arranged in the water cooling groove 2, water is injected into the water cooling groove 2, and part of water is heated to be changed into water vapor so as to absorb the heat in the high heat-conducting sheet 13.

When the battery discharges a great deal of heat, the air in the battery inner shell 3 expands rapidly, so that the air generates pressure on the lower wall surface of the sealing plate 8 to push the sealing plate 8 to move upwards, the sealing plate 8 moves upwards to compress the spring 9 fixed on the sealing plate 8, the spring 9 generates elasticity on the vent cover plate 10 connected with the other end of the spring 9, when the pressure of the air in the battery inner shell 3 reaches a certain degree, the spring 9 pushes the vent cover plate 10 out of the clamping groove 12 on the battery cover plate 1, the spring 9 connects the sealing plate 8 with the vent cover plate 10, and finally the vent cover plate 10 and the sealing plate 8 are pushed out of the vent groove 11, so that the heat in the battery inner shell 3 is discharged.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A heat dissipation lithium cell, includes battery apron (1), its characterized in that: the battery cover plate is characterized in that a battery inner shell (3) is fixedly mounted at the edge of the lower wall face of the battery cover plate (1), a battery outer shell (14) is fixedly mounted on the position, corresponding to the outer wall face of the battery inner shell (3), of the lower wall face of the battery cover plate (1), a water cooling groove (2) is formed in the gap between the battery inner shell (3) and the battery outer shell (14), a high heat conducting sheet (13) is fixedly mounted on the outer wall face of the battery inner shell (3), a diaphragm (7) is fixedly mounted at the middle position inside the battery inner shell (3), electrode rods (4) are respectively arranged on the left side and the right side inside the battery inner shell (3), one end, far away from the inner bottom wall of the battery inner shell (3), of each electrode rod (4) is fixedly mounted with an electrode lug (5), electrode notches (6) are formed in the positions, corresponding to the electrode lugs (5), of the left side and the right side of the battery cover ) The ventilation device is characterized in that clamping grooves (12) are formed in the left side wall surface and the right side wall surface of the ventilation groove (11), a ventilation cover plate (10) is arranged at the position corresponding to the clamping grooves (12), four groups of springs (9) are fixedly mounted on the lower wall surface of the ventilation cover plate (10), and sealing plates (8) are fixedly mounted at the position corresponding to the ventilation cover plate (10) on the left side wall surface and the right side wall surface of the ventilation groove (11).

2. The lithium battery of claim 1, further comprising: the battery inner shell (3) is of a hollow structure, the hollow part in the battery inner shell (3) penetrates through the upper wall surface of the battery inner shell (3) to the inside of the battery inner shell (3), the shape of the water cooling groove (2) is matched with the shape of the corresponding position of the battery inner shell (3) and the battery outer shell (14), and the outer wall surface of the battery outer shell (14) corresponds to the inner wall surface of the battery inner shell (3) but is not attached to the inner wall surface.

3. The lithium battery of claim 1, further comprising: the shape of the water cooling groove (2) is matched with the shape of the corresponding position of the battery inner shell (3) and the battery outer shell (14), and the high heat-conducting fins (13) are attached to the outer wall surface of the battery inner shell (3).

4. The lithium battery of claim 1, further comprising: the electrode notch (6) is a rectangular through hole, the electrode lug (5) is arranged in the electrode notch (6) and extends upwards to the upper end of the battery cover plate (1), and the high heat-conducting fins (13) are attached to the outer wall surface of the battery inner shell (3) mutually.

5. The lithium battery of claim 1, further comprising: the two groups of electrode notches (6) are symmetrical with the ventilation groove (11) as the left center and the right center, the ventilation cover plate (10) is in an inverted U shape, and the shapes of the left end and the right end of the ventilation cover plate (10) are matched with the shape of the clamping groove (12).

6. The lithium battery of claim 1, further comprising: the sealing plate (8) is rectangular plate-shaped, and one ends of the four groups of springs (9) far away from the ventilation cover plate (10) are connected with the sealing plate (8).