CN212062530U

CN212062530U - Explosion-proof lithium battery

Info

Publication number: CN212062530U
Application number: CN202021076377.2U
Authority: CN
Inventors: 陈伟成
Original assignee: Dongguan Yanke New Energy Co ltd
Current assignee: Dongguan Yanke New Energy Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2020-12-01
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses an explosion-proof lithium battery, which effectively solves the problems that the prior lithium battery has poor heat dissipation performance when in use and the internal pressure of the battery is increased due to the vaporization of the electrolyte inside the battery when the temperature is too high, and the explosion is caused, and comprises a first shell, wherein a second shell is fixed at the top end inside the first shell, the top end of the second shell penetrates through the first shell and is provided with an anode and a cathode, a heat dissipation component is arranged between the first shell and the second shell, a pressure relief component is arranged at the middle part of the top end of the second shell, and the heat dissipation component comprises a liquid storage tank, a water pump, a flow guide pipe, a cooling plate and heat dissipation holes, the utility model has simple structure and convenient use, enhances the heat dissipation performance of the lithium battery due to the installation of the heat dissipation component, so that the temperature of the lithium battery is not too high when in use, and when the pressure, and meanwhile, the electrolyte can be ensured not to be leaked.

Description

Explosion-proof lithium battery

Technical Field

The utility model relates to an explosion-proof technical field of lithium cell specifically is an explosion-proof lithium cell.

Background

Lithium batteries have become the primary batteries of rechargeable batteries, which have high capacity density and competitive price and are expected to be the mainstream of the market in the coming years, but the lithium batteries still have the risk of explosion, and when the temperature of the lithium batteries is too high, the internal electrolyte of the lithium batteries is vaporized due to poor heat dissipation performance, so that the internal pressure of the lithium batteries is increased, and the explosion occurs.

Therefore, how to design an explosion-proof lithium battery becomes a problem to be solved currently.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides an explosion-proof lithium cell, effectual solved current lithium cell heat dispersion when using poor, thereby the inside electrolyte vaporization of battery leads to its internal pressure to increase the problem of blasting when the high temperature.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model discloses a first casing, the inside top of first casing is fixed with the second casing, and second casing top is passed first casing and is provided with positive pole and negative pole, installs radiator unit between first casing and the second casing, and second casing top middle part is provided with pressure release subassembly.

Preferably, radiator unit includes reservoir, water pump, honeycomb duct, cooling plate and louvre, and the inside top of first casing is fixed with the reservoir, and reservoir internally mounted has the water pump, and water pump output port external fixation has the honeycomb duct, and the honeycomb duct cover is outside the second casing, and in the honeycomb duct other end stretched into the reservoir, second casing bottom mounting had the cooling plate, and the louvre has been seted up in the first casing outside.

Preferably, the pressure release subassembly includes the pressure release mouth, first fixed plate, the second fixed plate, a spring, the sealing plug, flexible post, the stagnant flow board, the guide arm, guide pin bushing and gravity ball, the pressure release mouth has been seted up at second casing top middle part, the inside first fixed plate that is fixed with of pressure release mouth, the inside position department that is located first fixed plate below of pressure release mouth is fixed with the second fixed plate, there is the sealing plug first fixed plate bottom through spring coupling, the flexible post has been cup jointed to spring inside, flexible post is fixed between first fixed plate and second fixed plate, the inside position department that is located second fixed plate below of pressure release mouth is fixed with the stagnant flow board, second casing bottom corresponds pressure release mouth position department and is fixed with the guide arm, the guide pin bushing has been cup jointed in the outside slip in guide arm top.

Preferably, a temperature sensor is arranged in the middle of the inner side of the first shell and electrically connected with the single chip microcomputer.

Preferably, the upper part of the outer side of the guide rod is provided with a sliding groove, and a sliding rod matched with the sliding groove is fixed inside the guide sleeve.

Preferably, the rubber sleeve is sleeved outside the gravity ball.

The utility model discloses simple structure, convenient to use, radiator unit's installation has strengthened the heat dispersion of lithium cell for the lithium cell temperature can not be too high when using, and when pressure increased in the lithium cell, pressure release unit was used for discharging its inside gas, prevents that the lithium cell from exploding because its inside pressure is too high, can guarantee simultaneously that electrolyte can not reveal.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic sectional view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of a second housing of the present invention;

fig. 3 is an enlarged schematic view of the structure at a of the present invention.

Reference numbers in the figures: 1. a first housing; 2. a second housing; 3. a positive electrode; 4. a negative electrode; 5. a heat dissipating component; 51. a liquid storage tank; 52. a water pump; 53. a flow guide pipe; 54. a cooling plate; 55. heat dissipation holes; 6. a pressure relief assembly; 61. a pressure relief port; 62. a first fixing plate; 63. a second fixing plate; 64. a spring; 65. a sealing plug; 66. a telescopic column; 67. a flow stopping plate; 68. a guide bar; 69. a guide sleeve; 610. a gravity ball.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying fig. 1-3.

Embodiment one is given by fig. 1-3, the utility model discloses a first casing 1, first casing 1 inside top is fixed with second casing 2, and second casing 2 top is passed first casing 1 and is provided with anodal 3 and negative pole 4, installs radiator unit 5 between first casing 1 and the second casing 2, and 2 top middle parts of second casing are provided with pressure relief subassembly 6.

Second embodiment, on the basis of first embodiment, the radiator unit 5 includes reservoir 51, water pump 52, honeycomb duct 53, cooling plate 54 and louvre 55, first casing 1 inside top is fixed with reservoir 51, reservoir 51 internally mounted has water pump 52, water pump 52 output port external fixation has honeycomb duct 53, honeycomb duct 53 overlaps outside second casing 2, work as water pump 52 is done, the coolant liquid flows in honeycomb duct 53 is inside, the heat in second casing 2 is taken away to the coolant liquid that flows, thereby play the radiating effect, the honeycomb duct 53 other end stretches into in reservoir 51, second casing 2 bottom mounting has cooling plate 54, louvre 55 has been seted up to first casing 1 outside, the heat dispersion of the device has been strengthened.

Third embodiment, on the basis of the first embodiment, the pressure relief assembly 6 includes a pressure relief opening 61, a first fixing plate 62, a second fixing plate 63, a spring 64, a sealing plug 65, a telescopic column 66, a flow stopping plate 67, a guide rod 68, a guide sleeve 69 and a gravity ball 610, the middle of the top end of the second housing 2 is provided with the pressure relief opening 61, the first fixing plate 62 is fixed inside the pressure relief opening 61, the second fixing plate 63 is fixed inside the pressure relief opening 61 at a position below the first fixing plate 62, the bottom end of the first fixing plate 62 is connected with the sealing plug 65 through the spring 64, when the pressure inside the lithium battery is too high, the pressure gives 65 an upward thrust, when the thrust is greater than the elastic force of the spring 64, the sealing plug 65 is separated from the second fixing plate 63, the air flows out, the telescopic column 66 is sleeved inside the spring 64, the telescopic column 66 is fixed between the first fixing plate 62 and the second fixing plate 63, the flow stopping plate 67 is fixed inside the pressure relief opening 61, prevent that electrolyte from passing through pressure release port 61 and flowing out, second casing 2 bottom corresponds pressure release port 61 position department and is fixed with guide arm 68, and guide pin bushing 69 has been cup jointed in the outside slip in guide arm 68 top, and the guide pin bushing 69 top is fixed with gravity ball 610, and when the lithium cell was being placed upside down, gravity ball 610 received the action of gravity downstream to block up pressure release port 61.

Fourth, on the basis of the first embodiment, a temperature sensor is arranged in the middle of the inner side of the first shell 1, and the temperature sensor is electrically connected with the single chip microcomputer, so that the heat dissipation assembly 5 can be used conveniently.

In the fifth embodiment, on the basis of the third embodiment, a sliding groove is formed in the upper portion of the outer side of the guide rod 68, and a sliding rod matched with the sliding groove is fixed inside the guide sleeve 69, so that the gravity ball 610 can move up and down outside the guide rod 68 conveniently.

In the sixth embodiment, on the basis of the third embodiment, a rubber sleeve is sleeved outside the gravity ball 610, so that the sealing performance of the device is enhanced.

When the utility model is used, when the temperature sensor monitors that the temperature inside the device is too high, the signal is transmitted to the singlechip, the singlechip controls the water pump 52 to work, the cooling liquid in the liquid storage tank 51 is driven to flow, thereby taking away the heat outside the second shell 2, and playing a role of heat dissipation, when the temperature of the second shell 2 is uncontrollable by the heat dissipation component 5, the electrolyte volatilizes to form gas, the pressure in the second shell 2 is increased, the pressure gives an upward thrust to the sealing plug 65, when the thrust is greater than the elasticity of the spring 64, the sealing plug 65 is separated from the second fixing plate 63, the gas flows out, so that the inside of the second shell 2 is kept balanced to prevent explosion, when the device is in a horizontal state, the flow stopping plate 67 prevents the electrolyte from flowing out from the pressure relief port 61, when the device inclines or falls, the gravity ball 610 is subjected to the action of gravity to drive the guide sleeve 69 to move along, thereby blocking the pressure relief port 61 to prevent the electrolyte from flowing out.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an explosion-proof lithium battery, includes first casing (1), its characterized in that, first casing (1) inside top is fixed with second casing (2), and second casing (2) top is passed first casing (1) and is provided with anodal (3) and negative pole (4), installs radiator unit (5) between first casing (1) and second casing (2), and second casing (2) top middle part is provided with pressure release subassembly (6).

2. The explosion-proof lithium battery of claim 1, wherein the heat dissipation assembly (5) comprises a liquid storage tank (51), a water pump (52), a flow guide pipe (53), a cooling plate (54) and heat dissipation holes (55), the liquid storage tank (51) is fixed at the top end inside the first casing (1), the water pump (52) is installed inside the liquid storage tank (51), the flow guide pipe (53) is fixed outside an output port of the water pump (52), the flow guide pipe (53) is sleeved outside the second casing (2), the other end of the flow guide pipe (53) extends into the liquid storage tank (51), the cooling plate (54) is fixed at the bottom end of the second casing (2), and the heat dissipation holes (55) are formed in the outer side of the first casing (1).

3. The explosion-proof lithium battery of claim 1, wherein the pressure relief assembly (6) comprises a pressure relief opening (61), a first fixing plate (62), a second fixing plate (63), a spring (64), a sealing plug (65), a telescopic column (66), a flow stopping plate (67), a guide rod (68), a guide sleeve (69) and a gravity ball (610), the pressure relief opening (61) is formed in the middle of the top end of the second shell (2), the first fixing plate (62) is fixed inside the pressure relief opening (61), the second fixing plate (63) is fixed inside the pressure relief opening (61) at a position below the first fixing plate (62), the bottom end of the first fixing plate (62) is connected with the sealing plug (65) through the spring (64), the telescopic column (66) is sleeved inside the spring (64), and the telescopic column (66) is fixed between the first fixing plate (62) and the second fixing plate (63), a flow stopping plate (67) is fixed at a position below the second fixing plate (63) inside the pressure relief opening (61), a guide rod (68) is fixed at a position corresponding to the pressure relief opening (61) at the bottom end of the second shell (2), a guide sleeve (69) is sleeved outside the top end of the guide rod (68) in a sliding mode, and a gravity ball (610) is fixed at the top end of the guide sleeve (69).

4. The explosion-proof lithium battery of claim 1, wherein a temperature sensor is arranged in the middle of the inner side of the first shell (1), and the temperature sensor is electrically connected with the single chip microcomputer.

5. The explosion-proof lithium battery as claimed in claim 3, wherein the guide rod (68) is provided with a sliding groove at the upper part of the outer side thereof, and a sliding rod used in cooperation with the sliding groove is fixed inside the guide sleeve (69).

6. An explosion-proof lithium battery as claimed in claim 3, characterized in that a rubber sleeve is sleeved outside the gravity ball (610).