CN217182247U

CN217182247U - Safety protection device for whole lithium battery charging process

Info

Publication number: CN217182247U
Application number: CN202220515857.7U
Authority: CN
Inventors: 王晋波
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-08-12
Anticipated expiration: 2032-03-10

Abstract

The utility model discloses a lithium battery charging overall process safety arrangement, including explosion-proof shell, battery, termination, siren alarm, mounting bracket, the battery is installed inside explosion-proof shell, the mounting bracket sets up in the battery outside, the siren alarm is installed in the mounting bracket top, explosion-proof shell inboard scribbles the heat-sink shell, explosion-proof shell's the outside scribbles the explosion-sink shell, the siren alarm includes air inlet unit, siren body, the inside gas channel of blowing of siren body, flute chamber, inorganic material fill chamber, diaphragm, preforming, di kou. The utility model discloses it is explosion-proof effectual, also can send the warning under the condition of not circular telegram, the function is more, the cost of each part is low, the cost is cheap.

Description

Safety protection device for whole lithium battery charging process

Technical Field

The utility model relates to a lithium battery charging protection technical field specifically is a lithium battery charging overall process safety arrangement.

Background

When the charger is overcharged or malfunctions due to misoperation, abnormal gas is often generated inside the battery, and because the high-capacity batteries are sealed in some containers, the gas is gathered to generate excessive pressure inside the battery, the temperature is also increased, and the danger of battery explosion exists. In some large-scale equipment, a large number of lithium batteries are arranged, and once the batteries explode, a large number of lithium batteries can be damaged, and other equipment near the batteries can be even damaged seriously.

The existing lithium battery protection device has the following defects that 1) the explosion-proof effect of the lithium battery protection device is poor;

2) most of lithium battery protection devices adopt a temperature detection device and an alarm to detect and alarm the temperature of a lithium battery, but the temperature detection device and the alarm also work after being electrified, and once the battery is abnormal, the temperature detection device and the alarm are likely to be powered off, so that the alarm effect cannot be achieved; 3) the manufacturing cost of the lithium battery protection device is high, and the lithium battery protection device is not beneficial to large-scale popularization and use; 4) the alarm device of the lithium battery protection device is single in function.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a lithium battery charging overall process safety arrangement, it is explosion-proof effectual, also can send the warning under the condition of not circular telegram, the function is more, and each part is with low costs, and the cost is cheap.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a lithium battery charging overall process safety arrangement, includes explosion-proof shell, battery, termination, siren alarm, mounting bracket, the battery is installed inside explosion-proof shell, the mounting bracket sets up in the battery outside, the siren alarm is installed in the mounting bracket top, include inlet wire, charging wire, fuse in the termination, the charging wire is connected with the fuse behind the inlet wire, the fuse passes and is connected with the battery behind the mounting bracket, explosion-proof shell inboard scribbles the heat-sink shell, explosion-proof shell's the outside scribbles the explosion-proof layer, the siren alarm includes air inlet unit, siren body, the air inlet has been seted up to air inlet unit top, air inlet unit's inside is equipped with the chamber that admits air, the air inlet is connected with the chamber that admits air, the inside gas blowing channel of siren body, the chamber of whistling, inorganic material fill chamber, diaphragm, The novel bamboo flute diaphragm air inlet device comprises a pressing piece and a dike mouth, wherein an air inlet cavity is respectively communicated with an air blowing channel and an inorganic material filling cavity, a sliding block is arranged at the communication position of the air inlet cavity, the air blowing channel and the inorganic material filling cavity, the air inlet cavity, the air blowing channel and the inorganic material filling cavity are respectively blocked at the initial position of the sliding block, a diaphragm is arranged between the air blowing channel and the dike mouth, a compression spring is arranged between the diaphragm and the pressing piece, and the diaphragm is also in contact with the dike mouth.

Furthermore, the explosion-proof cover further comprises an electromagnet switch, and the electromagnet switch is arranged at the junction of the explosion-proof shell and the cover.

Further, the electromagnet switch is connected with the fuse through an electric wire.

Further, still include the heat absorption cover, the heat absorption cover passes through the bolt and is fixed with the siren body, and covers in the siren body outside.

Further, the diameter of the air blowing channel is smaller than that of the air inlet cavity.

Further, the initial position of the head of the sliding block plugs the air inlet cavity and the air blowing channel, and the initial position of the tail of the sliding block plugs the inorganic material filling cavity.

Further, the inorganic material filling cavity is filled with an inorganic material which is converted from a solid state to a liquid state at a certain temperature.

Further, the mounting frame comprises a plurality of mounting plates, and each mounting plate is connected with the other mounting plate through a rotating shaft.

Furthermore, the explosion-proof shell is connected with the cover through a clamping block or a lock.

Furthermore, an annular air blowing opening is formed in the end portion of the air blowing channel and is in contact with the membrane.

(III) advantageous effects

The utility model provides a lithium battery charging overall process safety arrangement possesses following beneficial effect:

1. the end part of the blowing channel of the utility model is provided with an annular blowing port which is contacted with the diaphragm. The annular air blowing openings are more favorable for enabling the diaphragm to make a sound, and the sound transmission range of the diaphragm is improved.

2. The utility model discloses a will blow and rise the pressure and concentrate, the diameter of the passageway of blowing is less than the diameter of air inlet chamber.

3. The utility model discloses a better protection siren body utilizes the heat absorption cover to cover in the siren body outside, when the temperature risees, absorbs the heat by heat absorption cover 13.

4. The utility model discloses a multiple protection architecture design, firstly adopt siren alarm device, under the unusual condition of battery, just can send the alarm sound without the circular telegram, its warning effect is good, and the sound coverage is big, can use widely on a large scale, secondly scribble the heat-sink shell in explosion-proof shell inboard, scribble explosion-proof layer in explosion-proof shell's the outside, can take place when the thermal runaway at the battery like this, absorb the heat on the one hand, prevent on the one hand that the battery explosion from influencing other components and parts to reduce the explosion loss.

5. The utility model has the advantages of simple structure, each part is with low costs, and the cost is cheap, and explosion-proof effectual, can use widely on a large scale.

6. The utility model discloses a design of electro-magnet switch can be when the battery normally charges, and the charging wire supplies power for the solenoid in the electro-magnet switch, and the electro-magnet in the electro-magnet switch pops out, backs down lid 1 for the battery normally dispels the heat, and when the battery was unusual, the fuse in the termination breaks off, cuts off the charging wire, and the electro-magnet outage is then the electro-magnet is withdrawed, and the lid falls down pins explosion-proof shell, prevents that the battery explosion from influencing other parts.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

fig. 2 is a schematic view of the mounting bracket of the present invention after installation;

fig. 3 is the internal structure schematic diagram of the siren alarm of the present invention.

In the figure: 1. a cover; 2. an electromagnet switch; 3. a battery; 4. an explosion-proof housing; 5. a mounting frame; 6. a siren alarm; 7. a wiring device; 8. locking; 9. an air inlet; 10. an air intake device; 11. an air inlet cavity; 12. a membrane; 13. a heat absorbing cover; 14. a mouth is disbursed; 15. a flute body; 16. a compression spring; 17. tabletting; 18. filling the cavity with an inorganic material; 19. a slider; 20. a flute cavity; 21. an air blowing channel;

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a lithium cell charging overall process safety arrangement, including explosion-proof housing 4, battery 3, termination 7, siren alarm 6, mounting bracket 5, electro-magnet switch 2, battery 3 is installed inside explosion-proof housing 4, mounting bracket 5 sets up in the battery 3 outside, siren alarm 6 is installed in mounting bracket 5 top, include the incoming line in termination 7, the charging wire, the fuse, the charging wire is connected with the fuse after the incoming line, the fuse passes through mounting bracket 5 and is connected with battery 3, explosion-proof housing 4 inboard scribbles the heat-sink shell, the outside of explosion-proof housing 4 scribbles the explosion-proof layer, siren alarm 6 includes air inlet unit 10, siren body 15, air inlet 9 has been seted up to air inlet unit 10 top, the inside of air inlet unit 10 is equipped with air inlet chamber 11, air inlet 9 is connected with air inlet chamber 11, air channel 21 blows in siren body 15, siren chamber 20, inorganic material fills chamber 18, The diaphragm 12, the pressing sheet 17 and the dike mouth 14, the air inlet cavity 11 is respectively communicated with the air blowing channel 21 and the inorganic material filling cavity 18, the sliding block 19 is arranged at the communication position of the air inlet cavity 11 with the air blowing channel 21 and the inorganic material filling cavity 18, the air inlet cavity 11, the air blowing channel and the inorganic material filling cavity 18 are sealed at the initial position of the sliding block 19, the diaphragm 12 is installed between the air blowing channel 21 and the flute cavity 20, the compression spring 16 is arranged between the diaphragm 12 and the pressing sheet 17, and the diaphragm 12 is also in contact with the dike mouth 14. The initial position of the head part of the sliding block 19 blocks the air inlet cavity 11 and the air blowing channel, and the initial position of the tail part of the sliding block 19 blocks the inorganic material filling cavity 18. Inorganic material fills cavity 18 inside packing and turns into liquid inorganic material by solid-state under the certain temperature (for example wax, can add certain additive in wax and make its melting point reduce, wax normal atmospheric temperature be solid-state, when reacing certain temperature, wax becomes liquid by solid-state, need to explain that the above-mentioned example is not in order to restrict the utility model discloses a protection scope, only explain for better explanation the utility model discloses a principle, the utility model provides an inorganic material can also choose for use other to turn into liquid inorganic material by solid-state under certain temperature).

The electromagnet switch 2 is arranged at the junction of the explosion-proof shell 4 and the cover 1. The electromagnet switch 2 is connected with the charging wire through an electric wire, when the cover needs to be opened, the electromagnetic coil in the electromagnet switch 2 is electrified, and the electromagnet in the electromagnet switch extends out under the action of a magnetic field to jack the cover.

The working principle is as follows: when the battery normally charges, the charging wire supplies power to the electromagnetic coil in the electromagnet switch 2, the electromagnet in the electromagnet switch 2 is popped out, and the cover 1 is jacked open, so that the battery normally dissipates heat.

When the battery is charged to a certain temperature, the heat absorption layer in the explosion-proof shell 4 starts absorbing heat, the fuse in the wiring device 7 is disconnected, the charging wire is cut off, the electromagnet is powered off, the electromagnet is retracted, and the cover falls down to lock the explosion-proof shell 4; meanwhile, as the temperature in the explosion-proof shell 4 rises, the inorganic material in the inorganic material filling cavity 18 is changed from a solid state to a liquid state, so that the volume of the inorganic material is reduced, the slide block 19 moves towards the inorganic material filling cavity 18 under the action of pressure, so that the air inlet cavity 11 is communicated with the air blowing channel 21, hot air enters the air inlet cavity 11 from the air inlet 9, then enters the air blowing channel 21 from the air inlet cavity 11, then the air blowing channel 21 applies pressure to the diaphragm 12, the diaphragm 12 moves downwards under the action of the pressure, the compression spring 16 is compressed, after the diaphragm 12 presses a certain distance, the hot air in the air blowing channel 21 flows out from the flute mouth, the pressure is reduced, the compression spring 16 applies work to push the diaphragm 12 to seal the air blowing channel 21, so that the diaphragm 12 vibrates to generate a flute sound, and send an alarm signal to prompt a worker that the battery is abnormal.

When the battery generates a thermal runaway phenomenon and high-temperature explosion and other conditions are generated, the heat absorption layer in the explosion-proof shell 4 starts to absorb heat, and the explosion-proof layer is coated on the outer side of the explosion-proof shell 4 to prevent the battery explosion from influencing other components.

The utility model discloses a further embodiment, for better protection siren body 15, still include heat absorption cover 13, heat absorption cover 13 passes through the bolt and is fixed with siren body 15, and covers in the siren body 15 outside, when the temperature risees, absorbs the heat by heat absorption cover 13.

In another embodiment of the present invention, the diameter of the blowing channel is smaller than the diameter of the air intake chamber 11 in order to concentrate the blowing pressure.

In another embodiment of the present invention, in order to facilitate the installation and the disassembly, the mounting frame 5 comprises a plurality of mounting plates, each mounting plate is connected to another mounting plate through a rotation shaft, and the schematic diagram after the mounting frame is installed is shown in fig. 2.

In another embodiment of the present invention, the explosion-proof housing 4 is connected to the cover 1 through a latch or a lock 8. As the latch or lock 8 is a conventional component, the principle and construction thereof are common general knowledge and therefore will not be described in detail.

In another embodiment of the present invention, the end of the blowing channel is provided with an annular blowing opening, and the annular blowing opening is in contact with the membrane 12. The use of the annular blowing openings is more conducive to making the diaphragm 12 sound and increasing the sound transmission range of the diaphragm 12.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium battery charging overall process safety arrangement, includes explosion-proof shell (4), its characterized in that: the novel solar energy battery with the heat absorption function comprises a battery (3), a wiring device (7), a siren alarm (6) and a mounting frame (5), wherein the battery (3) is mounted inside an anti-explosion shell (4), the mounting frame (5) is arranged on the outer side of the battery (3), the siren alarm (6) is mounted above the mounting frame (5), the wiring device (7) comprises a wire inlet, a charging wire and a fuse, the charging wire is connected with the fuse after passing through the wire inlet, the fuse is connected with the battery (3) after passing through the mounting frame (5), the inner side of the anti-explosion shell (4) is coated with a heat absorption layer, the outer side of the anti-explosion shell (4) is coated with an anti-explosion layer, the siren alarm (6) comprises an air inlet device (10) and a siren body (15), an air inlet (9) is formed above the air inlet device (10), and an air inlet cavity (11) is formed inside the air inlet device (10), the air inlet (9) is connected with an air inlet cavity (11), an air blowing channel (21), a whistle cavity (20), an inorganic material filling cavity (18), a diaphragm (12), a pressing sheet (17) and a dikou (14) are arranged inside the whistle body (15), the air inlet cavity (11) is communicated with the air blowing channel (21) and the inorganic material filling cavity (18) respectively, a sliding block (19) is arranged at the communication position of the air inlet cavity (11) and the air blowing channel (21) and the inorganic material filling cavity (18) respectively, the sliding block (19) is used for plugging the air inlet cavity (11), the air blowing channel (21) and the inorganic material filling cavity (18) at the initial position, the diaphragm (12) is installed between the air blowing channel (21) and the whistle cavity (20), a compression spring (16) is arranged between the diaphragm (12) and the pressing sheet (17), and the diaphragm (12) is also in contact with the dikou (14).

2. The safety protection device for the whole lithium battery charging process according to claim 1, wherein: the explosion-proof cover is characterized by further comprising an electromagnet switch (2), wherein the electromagnet switch (2) is arranged at the junction of the explosion-proof shell (4) and the cover (1).

3. The safety protection device for the whole process of lithium battery charging according to claim 2, wherein: the electromagnet switch (2) is connected with the fuse through an electric wire.

4. The safety protection device for the whole process of lithium battery charging according to claim 1, wherein: still include heat absorption cover (13), heat absorption cover (13) are fixed through bolt and siren body (15), and cover in siren body (15) outside.

5. The safety protection device for the whole lithium battery charging process according to claim 1, wherein: the diameter of the air blowing channel is smaller than that of the air inlet cavity (11).

6. The safety protection device for the whole lithium battery charging process according to claim 1, wherein: the initial position of the head of the sliding block (19) plugs the air inlet cavity (11) and the air blowing channel, and the initial position of the tail of the sliding block (19) plugs the inorganic material filling cavity (18).

7. The safety protection device for the whole lithium battery charging process according to claim 1, wherein: the inorganic material filling cavity (18) is filled with an inorganic material which is converted from a solid state into a liquid state at a certain temperature.

8. The safety protection device for the whole lithium battery charging process according to claim 1, wherein: the mounting rack (5) comprises a plurality of mounting plates, and each mounting plate is connected with the other mounting plate through a rotating shaft.

9. The safety protection device for the whole lithium battery charging process according to claim 1, wherein: the explosion-proof shell (4) is connected with the cover (1) through a clamping block or a lock (8).

10. The safety protection device for the whole lithium battery charging process according to claim 1, wherein: the end part of the air blowing channel is provided with an annular air blowing opening, and the annular air blowing opening is in contact with the membrane (12).