CN215070127U

CN215070127U - Safety protection structure of lithium iron phosphate battery

Info

Publication number: CN215070127U
Application number: CN202121226174.1U
Authority: CN
Inventors: 邱祖培
Original assignee: Fujian Qingke New Energy Technology Co ltd
Current assignee: Fujian Qingke New Energy Technology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-12-07
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a lithium iron phosphate battery's safety protection structure, including organism and protective cover plate, the inside of organism is provided with lithium cell group, the equal fixedly connected with arc protection pad of both sides inner wall of organism is filled up, the inside of organism and be provided with heat radiation fins for the both sides of lithium cell group, protective cover plate sets up the upper and lower terminal surface at the organism respectively, protective cover plate's terminal surface and for the inside fixedly connected with buffer block of organism, the lower extreme of buffer block runs through and is provided with the dashpot, the inside upper end of dashpot is provided with the telescopic link, the telescopic link is provided with four groups and equidistant range, the lower extreme side of telescopic link is provided with the spring, the lower extreme fixedly connected with blotter of telescopic link, the lower extreme of blotter is provided with the cooling material layer. The utility model discloses in, can effectively form the safety protection of using the lithium cell.

Description

Safety protection structure of lithium iron phosphate battery

Technical Field

The utility model relates to a lithium iron phosphate battery field especially relates to lithium iron phosphate battery's safety protection structure.

Background

The lithium iron phosphate battery is a lithium ion battery which uses lithium iron phosphate (LiFePO4) as a positive electrode material and carbon as a negative electrode material, wherein in the charging process, part of lithium ions in the lithium iron phosphate are removed and transferred to a negative electrode through electrolyte and are embedded into a negative electrode carbon material; meanwhile, electrons are released from the anode and reach the cathode from an external circuit, so that the balance of chemical reaction is maintained. In the discharging process, lithium ions are separated from the negative electrode and reach the positive electrode through the electrolyte, and meanwhile, electrons are released from the negative electrode and reach the positive electrode from an external circuit to provide energy for the outside. The lithium iron phosphate battery has the advantages of high working voltage, high energy density, long cycle life, good safety performance, small self-discharge rate and no memory effect.

The use of the safety protection structure to the lithium iron phosphate battery still exists certain not enough at present stage, can not effectively improve the heat dissipation protection to the lithium cell, and safe explosion-proof effect is not good, compares down, the utility model discloses, can effectively improve the heat dissipation protection to the lithium cell, and can effectively come to cool down to the lithium cell under the operating condition to protect, and can effectively come to carry out explosion-proof use to the lithium cell, effectively reduce the impact force that the lithium cell explosion produced, form safety protection and use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a safety protection structure of a lithium iron phosphate battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the safety protection structure of the lithium iron phosphate battery comprises a machine body and a protection cover plate, wherein a lithium battery pack is arranged inside the machine body, arc-shaped protection pads are fixedly connected to the inner walls of two sides of the machine body, and heat dissipation fins are arranged inside the machine body and opposite to two sides of the lithium battery pack;

the utility model discloses a cooling machine, including organism, protective cover plate, buffer block, telescopic link, spring, protective cover plate sets up the upper and lower terminal surface at the organism respectively, protective cover plate's terminal surface and for the inside fixedly connected with buffer block of organism, the lower extreme of buffer block runs through and is provided with the dashpot, the inside upper end of dashpot is provided with the telescopic link, the telescopic link is provided with four groups and equidistant range, the lower extreme side of telescopic link is provided with the spring, the lower extreme fixedly connected with blotter of telescopic link, the lower extreme of blotter is provided with the cooling material layer.

As a further description of the above technical solution:

the left side of the front end face of the machine body is provided with a first connecting port, and the right side of the front end face of the machine body is provided with a second connecting port.

As a further description of the above technical solution:

and connecting pieces are arranged on the periphery of the protective cover plate and on the periphery of the upper end surface and the lower end surface of the machine body.

As a further description of the above technical solution:

the side fixedly connected with stopper and the stopper of telescopic link are connected with the inside upper end of dashpot.

As a further description of the above technical solution:

and the end surfaces of the cooling material layer are respectively contacted with the upper end surface and the lower end surface of the lithium battery pack.

As a further description of the above technical solution:

the upper end of the protective cover plate is provided with a prompt lamp relative to the right side of the upper end of the machine body.

As a further description of the above technical solution:

the upper end of the protective cover plate is provided with a charging hole relative to the right side of the prompting lamp.

As a further description of the above technical solution:

one side of the heat dissipation fins is in contact with the side face of the lithium battery pack.

The utility model discloses following beneficial effect has:

1. the utility model discloses, come to dispel the heat the use to lithium cell group through organism department heat radiation fins to reduce the heat that lithium cell group produced at the during operation, form the heat dissipation protection and use.

2. The utility model discloses, and form through the arc protection pad and carry out safety protection to the both sides of lithium cell group, can effectively reduce the explosion suddenly of lithium cell group when using, can effectively cushion the piece that the explosion produced and spray.

3. The utility model discloses, form through protective cover and use the upper and lower end closing cap of organism, and through telescopic link department spring and blotter formation to lithium cell group safety protection in the buffer slot of protective cover department buffer block department, reduce the explosion impact force of lithium cell group, form the safety protection and use.

4. The utility model discloses, form the use of cooling down to lithium cell group through the cooling material layer to prolong the life of lithium cell group.

Drawings

Fig. 1 is an external view of a safety protection structure of a lithium iron phosphate battery according to the present invention;

fig. 2 is a schematic diagram of an internal structure of a machine body of a safety protection structure of a lithium iron phosphate battery provided by the present invention;

fig. 3 is a schematic structural diagram of a protective cover plate of a safety protection structure of a lithium iron phosphate battery according to the present invention;

fig. 4 is an enlarged schematic view of the structure at a in fig. 3.

Illustration of the drawings:

1. a first connection port; 2. a body; 3. a protective cover plate; 4. a second connection port; 5. a connecting member; 6. a warning light; 7. a charging hole; 8. heat dissipation fins; 9. a lithium battery pack; 10. an arc-shaped protection pad; 11. a buffer tank; 12. a telescopic rod; 13. a cushion pad; 14. a cooling material layer; 15. a buffer block; 16. a spring.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated 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. 1-4, the present invention provides an embodiment: the safety protection structure of the lithium iron phosphate battery comprises a machine body 2 and a protection cover plate 3, wherein a lithium battery pack 9 is arranged inside the machine body 2, arc-shaped protection pads 10 are fixedly connected to the inner walls of two sides of the machine body 2, heat dissipation fins 8 are arranged inside the machine body 2 and opposite to two sides of the lithium battery pack 9, one side of each heat dissipation fin 8 is in contact with the side face of the lithium battery pack 9 to dissipate heat of the lithium battery pack 9, the lithium battery pack 9 is protected, sudden explosion of the lithium battery pack 9 during use can be effectively reduced, and fragment injection generated by explosion can be effectively buffered;

the protective cover plate 3 is respectively arranged on the upper end surface and the lower end surface of the machine body 2, the end surface of the protective cover plate 3 is fixedly connected with a buffer block 15 relative to the interior of the machine body 2, the lower end of the buffer block 15 is provided with a buffer groove 11 in a penetrating way, the upper end of the interior of the buffer groove 11 is provided with a telescopic rod 12, the telescopic rod 12 is provided with four groups of buffer blocks which are arranged at equal intervals, the side surface of the telescopic rod 12 is fixedly connected with a limit block which is connected with the upper end of the interior of the buffer groove 11, the side surface of the lower end of the telescopic rod 12 is provided with a spring 16, the lower end of the telescopic rod 12 is fixedly connected with a buffer cushion 13, the lower end of the buffer cushion 13 is provided with a cooling material layer 14, the end surface of the cooling material layer 14 is respectively contacted with the upper end surface and the lower end surface of the lithium battery pack 9, so as to form the surface cooling use of the lithium battery pack 9, and effectively form the use of upper and lower surface buffer protection of the lithium battery pack 9, so as to reduce the explosion impact force of the lithium battery pack 9, forming safety protection for use;

the preceding terminal surface left side of organism 2 is provided with first connector 1, and the preceding terminal surface right side of organism 2 is provided with second connector 4, and protective cover plate 3 all around and all be provided with connecting piece 5 for organism 2's upper and lower terminal surface all around, and protective cover plate 3's upper end and for organism 2's upper end right side are provided with warning light 6, and protective cover plate 3's upper end and for warning light 6's right side be provided with the hole of charging 7.

The working principle is as follows: come to dispel the heat the use to lithium cell group 9 through organism 2 department heat radiation fins 8, and fill up 10 through the arc protection and form the both sides of organizing the lithium cell 9 and carry out safety protection, form the use to organism 2 upper and lower end closing cap through protective cover plate 3, and through protective cover plate 3 department buffer block 15 in buffer slot 11 telescopic link 12 department spring 16 and blotter 13 form the safety protection to lithium cell group 9, and form the use of cooling to lithium cell group 9 through cooling material layer 14.

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. Lithium iron phosphate battery's safety protection structure, including organism (2) and protective cover board (3), its characterized in that: a lithium battery pack (9) is arranged inside the machine body (2), arc-shaped protective pads (10) are fixedly connected to the inner walls of the two sides of the machine body (2), and heat dissipation fins (8) are arranged inside the machine body (2) and opposite to the two sides of the lithium battery pack (9);

the utility model discloses a cooling machine, including organism (2), protective cover board (3), buffer slot (11), the inside upper end of buffer slot (11) is provided with telescopic link (12), telescopic link (12) are provided with four groups and equidistant range, the lower extreme side of telescopic link (12) is provided with spring (16), the lower extreme fixedly connected with blotter (13) of telescopic link (12), the lower extreme of blotter (13) is provided with cooling material layer (14).

2. The safety protection structure of a lithium iron phosphate battery according to claim 1, characterized in that: the left side of the front end face of the machine body (2) is provided with a first connecting port (1), and the right side of the front end face of the machine body (2) is provided with a second connecting port (4).

3. The safety protection structure of a lithium iron phosphate battery according to claim 1, characterized in that: and connecting pieces (5) are arranged on the periphery of the protective cover plate (3) and on the periphery of the upper end surface and the lower end surface of the machine body (2).

4. The safety protection structure of a lithium iron phosphate battery according to claim 1, characterized in that: the side fixedly connected with stopper and the stopper of telescopic link (12) are connected with the inside upper end of dashpot (11).

5. The safety protection structure of a lithium iron phosphate battery according to claim 1, characterized in that: the end faces of the cooling material layer (14) are respectively contacted with the upper end face and the lower end face of the lithium battery pack (9).

6. The safety protection structure of a lithium iron phosphate battery according to claim 1, characterized in that: the upper end of the protective cover plate (3) is provided with a prompt lamp (6) relative to the right side of the upper end of the machine body (2).

7. The safety protection structure of a lithium iron phosphate battery according to claim 6, characterized in that: the upper end of the protective cover plate (3) is provided with a charging hole (7) relative to the right side of the prompt lamp (6).

8. The safety protection structure of a lithium iron phosphate battery according to claim 6, characterized in that: one side of the heat dissipation fins (8) is in contact with the side face of the lithium battery pack (9).