CN212209577U

CN212209577U - Lithium electricity protection electronic switch

Info

Publication number: CN212209577U
Application number: CN202020802974.2U
Authority: CN
Inventors: 全建军; 刘礼诚; 张华�; 赖见深; 巫立华; 陈珊桦
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-12-22
Anticipated expiration: 2030-05-14

Abstract

The utility model relates to the technical field of lithium battery accessories, in particular to a lithium battery protection electronic switch, which comprises a lithium battery and a shell, wherein when the temperature of the lithium battery rises, an expansion solution in the lifting pipe expands, and a first electrode plate is contacted with a second electrode plate, so that a heat dissipation fan is opened, the temperature of the lithium battery is reduced, the heat dissipation performance of the lithium battery is improved, the service life of the lithium battery is prolonged, the temperature of the lithium battery is prevented from rising too fast, and when the lithium battery continues to rise, a pressure sensor senses the pressure, a singlechip closes the electronic switch, a power supply line is cut off, the danger of the lithium battery is avoided, the safety of the lithium battery in use is improved, the temperature change of the lithium battery is accurately monitored by arranging the lifting pipe, the heat dissipation or the power failure treatment is carried out on the temperature change of the lithium battery, and the practicability, and the use safety of the lithium battery is improved, and the service life of the lithium battery is prolonged.

Description

Lithium electricity protection electronic switch

Technical Field

The utility model relates to a lithium cell accessory technical field, in particular to lithium electricity protection electronic switch.

Background

Many electric tool products now, when using, use the lithium cell to supply power mostly, the lithium cell is one kind by lithium metal or lithium alloy for anodal and negative electrode material, use non-aqueous electrolyte solution's battery, along with the development of scientific and technological, the lithium cell has become the mainstream, but when the use of lithium cell, because long-time discharge or when charging, can produce certain heat, not only bring certain influence to the life of lithium cell, when the high temperature, also produce the potential safety hazard easily, and the current electronic switch who protects the lithium cell is most simple structure, can't carry out accurate control and processing to the temperature of lithium cell, be not convenient for use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium electricity protection electronic switch to the easy production of heat when using for a long time that proposes among the solution above-mentioned background art influences the life-span of lithium cell and has certain dangerous problem.

In order to achieve the above object, the utility model provides a following technical scheme: a lithium battery protection electronic switch comprises a lithium battery and a shell, wherein a first wiring end is fixedly arranged at the upper end of the lithium battery, the lithium battery is fixedly connected with the shell, a heat dissipation fan is fixedly arranged at the lower end inside the shell, a single chip microcomputer is fixedly arranged at one side inside the shell, an electronic switch is fixedly arranged at the upper end inside the shell, a second wiring end is fixedly arranged at the upper surface outside the shell, a lifting pipe is fixedly arranged at one side inside the shell, a first electrode plate is fixedly arranged at the upper end of the lifting pipe, a second electrode plate is fixedly arranged above the lifting pipe inside the shell, a pressure sensor is fixedly arranged inside the second electrode plate, the lithium battery is electrically connected with the first wiring end, and the first wiring end is electrically connected with the first electrode plate, the pressure sensor and the electronic switch, the first electrode plate is electrically connected with the second electrode plate, the second electrode plate is electrically connected with the heat dissipation fan, the pressure sensor is electrically connected with the single chip microcomputer, the single chip microcomputer is electrically connected with the electronic switch, and the electronic switch is electrically connected with the second wiring end.

Preferably, the inlet port has all been seted up to the upper end both sides of shell, the louvre has evenly been seted up all around to the lower extreme of shell, just the inside lower extreme fixed mounting of shell has the diaphragm, the heat dissipation fan with the equal fixed mounting of fall tube is in on the diaphragm, just the intermediate position of diaphragm is penetrating design.

Preferably, the heat dissipation holes are located at the upper end of the lithium battery, and a gap exists between the lithium battery and the transverse plate.

Preferably, the inner part of the outer shell is located right above the lifting pipe and is fixedly provided with a fixed plate, and the second electrode plate is fixedly arranged on the lower surface of the fixed plate.

Preferably, the lifting pipe comprises a shell, a piston rod is inserted into the shell, and the first electrode plate is fixedly mounted at the upper end of the piston rod.

Preferably, the inner lower end of the housing is filled with an expansion solution.

Preferably, the housing is of a rectangular configuration.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a be equipped with the fall way, when the lithium cell temperature rose, make the inside inflation solution of fall way expand, and then make first electrode piece and second electrode piece contact, make the heat dissipation fan open, cool down the lithium cell, improve the thermal diffusivity of lithium cell, it is long when improving the use of lithium cell, avoid the lithium cell to heat up too fast, and when the lithium cell continues to rise, make pressure sensor sense pressure, make the singlechip close electronic switch, cut off the power supply line, avoid the lithium cell to take place danger, security when improving the lithium cell and using.

2. The utility model discloses a be equipped with the fall way, the accurate temperature variation to the lithium cell is monitored, and makes heat dissipation or outage processing to the temperature variation of lithium cell, improves the utility model discloses a practicality, and the security that improves the lithium cell and use and improve the life of lithium cell.

Drawings

Fig. 1 is a front sectional view of the structure of the present invention.

Fig. 2 is a partial enlarged view of the structure a of the present invention.

Fig. 3 is a schematic structural diagram of the housing in the structure of the present invention.

Fig. 4 is an electrical connection diagram of the structure of the present invention.

In the figure: 1. a lithium battery; 2. a housing; 3. a first terminal; 4. a heat dissipation fan; 5. a single chip microcomputer; 6. An electronic switch; 7. a second terminal; 8. a lifting pipe; 9. a first electrode sheet; 10. a second electrode sheet; 11. a pressure sensor; 12. an air inlet; 13. heat dissipation holes; 14. a transverse plate; 15. a fixing plate; 16. A housing; 17. a piston rod; 18. the solution is expanded.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a lithium battery protection electronic switch as shown in figures 1-4, which comprises a lithium battery 1 and a shell 2, wherein the shell 2 is of a rectangular structure, a first wiring terminal 3 is fixedly arranged at the upper end of the lithium battery 1, the lithium battery 1 is fixedly connected with the shell 2, a heat dissipation fan 4 is fixedly arranged at the lower end inside the shell 2, a single chip microcomputer 5 is fixedly arranged at one side inside the shell 2, an electronic switch 6 is fixedly arranged at the upper end inside the shell 2, a second wiring terminal 7 is fixedly arranged at the upper surface outside the shell 2, a lifting pipe 8 is fixedly arranged at one side inside the shell 2, a first electrode plate 9 is fixedly arranged at the upper end of the lifting pipe 8, a second electrode plate 10 is fixedly arranged above the lifting pipe 8 inside the shell 2, a pressure sensor 11 is fixedly arranged inside the second electrode plate 10, and the lithium battery 1 is electrically connected with the first, the first terminal 3 is electrically connected with the first electrode plate 9, the pressure sensor 11 and the electronic switch 6, the first electrode plate 9 is electrically connected with the second electrode plate 10, the second electrode plate 10 is electrically connected with the heat dissipation fan 4, the pressure sensor 11 is electrically connected with the single chip microcomputer 5, the single chip microcomputer 5 is electrically connected with the electronic switch 6, and the electronic switch 6 is electrically connected with the second terminal 7.

Air inlet 12 has all been seted up to the upper end both sides of shell 2, and louvre 13 has evenly been seted up all around to the lower extreme of shell 2, and the inside lower extreme fixed mounting of shell 2 has diaphragm 14, and heat dissipation fan 4 and the equal fixed mounting of fall way 8 are on diaphragm 14, and the intermediate position of diaphragm 14 is penetrating design, and louvre 13 is located lithium cell 1's upper end, and has the gap between lithium cell 1 and the diaphragm 14.

Fixed plate 15 is located directly over elevator 8 to the inside of shell 2, and second electrode piece 10 fixed mounting is at the lower surface of fixed plate 15, and elevator 8 includes casing 16, and it has piston rod 17 to peg graft in casing 1's inside, and first electrode piece 9 fixed mounting is in the upper end of piston rod 17, and the inside lower extreme of casing 16 is injected into and is had inflation solution 18.

Referring to fig. 1 and 2, when the temperature of the lithium battery 1 rises, the expansion solution 18 inside the casing 16 is heated to expand, and then the expansion solution 18 pushes the piston rod 17 to move upwards, so that the first electrode plate 9 at the upper end of the piston rod 17 contacts with the second electrode plate 10, and further the heat dissipation fan 4 is turned on, so that the heat dissipation fan 4 sucks external air into the casing 2 through the air inlet 12 and blows the external air to the lithium battery 1, and hot air is discharged through the heat dissipation hole 13, thereby effectively dissipating heat of the lithium battery 1, and when the temperature of the lithium battery 1 is too high, the pressure between the first electrode plate 9 and the second electrode plate 10 is increased, so that the second electrode plate 10 deforms, and the pressure sensor 11 is arranged inside the second electrode plate 10, so that the pressure sensor 11 is subjected to pressure, and the pressure sensor 11 transmits the pressure value to the single chip microcomputer 5, the singlechip 5 controls the electronic switch 6 to be turned off, so that the power supply line is cut off, the danger caused by overhigh temperature of the lithium battery 1 due to long-time use is avoided, and the safety of the lithium battery 1 during use is improved.

This practical theory of operation: when the utility model is used, the external circuit is electrically connected to the second terminal 7, so that the lithium battery 1 supplies power to the external device or charges the lithium battery 1, when the lithium battery 1 is used for a long time and the temperature of the lithium battery 1 rises, the expansion solution 18 inside the shell 16 is heated and expands, the expansion solution 18 pushes the piston rod 17 to move upwards, the first electrode plate 9 at the upper end of the piston rod 17 is contacted with the second electrode plate 10, the heat dissipation fan 4 is opened, the heat dissipation fan 4 sucks external air into the shell 2 through the air inlet hole 12 and blows the external air to the lithium battery 1, the hot air is discharged through the heat dissipation hole 13, the lithium battery 1 is effectively dissipated, and when the temperature of the lithium battery 1 is too high, the pressure between the first electrode plate 9 and the second electrode plate 10 is increased, and the second electrode plate 10 is deformed, and be equipped with pressure sensor 11 in the inside of second electrode piece 10 for pressure sensor 11 receives pressure, and pressure sensor 11 transmits the pressure value to singlechip 5, and singlechip 5 control electronic switch 6 closes, cuts off the power supply line, avoids long-time the use, leads to lithium cell 1 high temperature to take place danger, security when improving lithium cell 1 and using.

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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A lithium battery protection electronic switch comprises a lithium battery (1) and a shell (2), and is characterized in that: the upper end fixed mounting of lithium cell (1) has first wiring end (3), lithium cell (1) with shell (2) looks fixed connection, the inside lower extreme fixed mounting of shell (2) has heat dissipation fan (4), inside one side fixed mounting of shell (2) has singlechip (5), the inside upper end fixed mounting of shell (2) has electronic switch (6), fixed surface installs second wiring end (7) on the outside of shell (2), inside one side fixed mounting of shell (2) has fall way (8), the upper end fixed mounting of fall way (8) has first electrode piece (9), the inside of shell (2) is located the top fixed mounting of fall way (8) has second electrode piece (10), the inside fixed mounting of second electrode piece (10) has pressure sensor (11), lithium cell (1) electric connection first wiring end (3), first wiring end (3) electric connection first electrode piece (9), pressure sensor (11) and electronic switch (6), first electrode piece (9) electric connection second electrode piece (10), second electrode piece (10) electric connection heat dissipation fan (4), pressure sensor (11) electric connection singlechip (5), singlechip (5) electric connection electronic switch (6), electronic switch (6) electric connection second wiring end (7).

2. A lithium-ion electric protection electronic switch according to claim 1, characterized in that: air inlet hole (12) have all been seted up to the upper end both sides of shell (2), louvre (13) have evenly been seted up all around to the lower extreme of shell (2), just the inside lower extreme fixed mounting of shell (2) has diaphragm (14), heat dissipation fan (4) with the equal fixed mounting of fall way (8) is in on diaphragm (14), just the intermediate position of diaphragm (14) is penetrating design.

3. A lithium-ion electric protection electronic switch according to claim 2, characterized in that: the heat dissipation holes (13) are located at the upper end of the lithium battery (1), and gaps exist between the lithium battery (1) and the transverse plate (14).

4. A lithium-ion electric protection electronic switch according to claim 1, characterized in that: the inside of shell (2) is located fixed mounting has fixed plate (15) directly over elevator pipe (8), second electrode piece (10) fixed mounting be in the lower surface of fixed plate (15).

5. A lithium-ion electric protection electronic switch according to claim 1, characterized in that: the lifting pipe (8) comprises a shell (16), a piston rod (17) is inserted into the shell (16), and the first electrode plate (9) is fixedly installed at the upper end of the piston rod (17).

6. A lithium-ion electric protection electronic switch according to claim 5, characterized in that: an inflation solution (18) is injected into the lower interior end of the housing (16).

7. A lithium-ion electric protection electronic switch according to claim 1, characterized in that: the shell (2) is of a rectangular structure.