CN213878299U

CN213878299U - Lithium iron phosphate battery pack

Info

Publication number: CN213878299U
Application number: CN202120083135.4U
Authority: CN
Inventors: 俞飞
Original assignee: Nanjing Yutian New Energy Technology Co ltd
Current assignee: Nanjing Yutian New Energy Technology Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-08-03
Anticipated expiration: 2031-01-13

Abstract

The utility model discloses a lithium iron phosphate battery group relates to the lithium iron phosphate battery field, and in the maintenance in-process for solving the current lithium iron phosphate battery group among the prior art, inconvenient change monocell spare part influences work efficiency's problem. The utility model discloses a portable electronic device, including casing, iron phosphate lithium cell, connecting rod, support frame, slide bar, install the install bin, the inside of casing is provided with the iron phosphate lithium cell, the iron phosphate lithium cell is provided with a plurality of, the both sides of casing all are provided with the breach, the breach is provided with a plurality of, just the outside of breach is provided with the limiting plate, the connecting rod is installed to the one end of limiting plate, the connecting rod passes the breach and extends to the inside and one side welded connection of iron phosphate lithium cell of casing, the below of breach is provided with the support frame, the slide bar is all installed to the lower extreme and the upper end of support frame, the install bin is all installed to the inside below both sides of casing, the internally mounted of install bin has the sliding plate, spacing spring is installed to one side of sliding plate, the silica gel stopper is installed to the upper end of slide bar.

Description

Lithium iron phosphate battery pack

Technical Field

The utility model relates to a lithium iron phosphate battery technical field specifically is lithium iron phosphate battery group.

Background

The lithium iron phosphate battery is a lithium ion battery using lithium iron phosphate as a positive electrode material. When the lithium ion battery is charged, part of lithium ions in the lithium iron phosphate are removed and are transferred to the negative electrode through the electrolyte, and meanwhile, electrons are released from the positive electrode and reach the negative electrode from an external circuit to maintain the balance of chemical reaction; during discharging, lithium ions are extracted 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 P-O bond in the lithium iron phosphate crystal is stable and difficult to decompose, and the structure of the lithium iron phosphate crystal does not collapse and generate heat or form a strong oxidizing substance like lithium cobaltate even at high temperature or during overcharge, so that the lithium iron phosphate crystal has good safety. The report indicates that in actual operation, a small part of samples are found to have a combustion phenomenon in a needling or short-circuit experiment, but an explosion event does not occur, and in an overcharge experiment, a high-voltage charge which is greatly higher than the self discharge voltage by multiple times is used, and the explosion phenomenon is still found. Nevertheless, the overcharge safety is greatly improved compared with the common liquid electrolyte cobalt acid lithium battery.

The full name of the lithium iron phosphate battery is a lithium iron phosphate lithium ion battery, which is called a lithium iron phosphate battery for short. Because the performance of the lithium iron phosphate power battery is particularly suitable for application in the aspect of power, two characters of power are added in the name, namely the lithium iron phosphate power battery. It is also known as a "lithium iron power cell". However, in the maintenance process of the existing lithium iron phosphate battery pack, the replacement of parts of a single battery is inconvenient, and the working efficiency is influenced; therefore, the lithium iron phosphate battery pack is urgently needed to be developed in the market to help people to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium iron phosphate group battery to current lithium iron phosphate group battery that proposes in solving above-mentioned background art is examining and repairing the in-process, inconvenient change monocell spare part, influences work efficiency's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the lithium iron phosphate battery pack comprises a shell, wherein a plurality of lithium iron phosphate batteries are arranged in the shell, notches are arranged on two sides of the shell, a plurality of notches are arranged on the notches, limiting plates are arranged outside the notches, a connecting rod is arranged at one end of each limiting plate, the connecting rod penetrates through the notches to extend into the shell and is connected with one side of each lithium iron phosphate battery in a welding mode, a supporting frame is arranged below each notch, sliding rods are arranged at the lower ends and the upper ends of the supporting frames, mounting boxes are arranged on two sides below the inner portion of the shell, sliding plates are arranged in the mounting boxes, the lower ends of the sliding rods penetrate through the shell to extend into the mounting boxes and are connected with the sliding plates in a welding mode, limiting springs are arranged on one side of each sliding plate, and silica gel limiting blocks are arranged at the upper ends of the sliding rods, the surface of limiting plate is provided with spacing draw-in groove, the inside and limiting plate block of silica gel stopper embedding spacing draw-in groove, the baffle is installed to the inside below of casing, pressure spring is installed to the below of baffle.

Preferably, the upper end of the lithium iron phosphate battery is provided with a positive electrode conductive post and a negative electrode conductive post, and the positive electrode conductive post and the negative electrode conductive post are connected through the connection guide piece and are electrically connected.

Preferably, a plurality of the below both sides of lithium iron phosphate battery all are provided with the recess, recess and lithium iron phosphate battery set up structure as an organic whole.

Preferably, a radiator is installed below the inside of the casing, a radiating fan is installed inside the radiator, and a heat exchange hole is formed in the rear of the casing.

Preferably, the front end face of the shell is provided with a limiting frame, an electric connection groove is arranged in the limiting frame, and the electric connection groove is electrically connected with the plurality of lithium iron phosphate batteries.

Preferably, the inside of baffle is installed with the fixed strip, the fixed strip is provided with four, four all install the filter screen between the fixed strip.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a through the setting of support frame, change or the dismouting during operation to the lithium iron phosphate battery in needs, the slide bar is stirred to the accessible, make the silica gel stopper of slide bar upper end break away from the inside spacing draw-in groove of limiting plate, thereby can separate lithium iron phosphate battery and support frame, after dialling corresponding connection guide, can drive the lithium iron phosphate battery and break away from the casing, conveniently change, the installation is also simple and convenient, insert the back fast, can fix after going into the limiting plate with the silica gel stopper card, moreover, the steam generator is simple in structure, high durability and convenient use.

2. The utility model discloses a through the setting of baffle, during the use, can go into the inside back of casing with lithium iron phosphate battery card, the baffle through the inside below of casing carries on spacingly to lithium iron phosphate battery, accessible pressure spring cooperation support frame for lithium iron phosphate battery's overall position keeps firm, when meetting the atress, also can keep overall structure stable in state, the work effect has been improved, vibrations have been reduced, the radiator through the lower extreme can carry out the heat transfer to the below, thereby reduce the temperature that lithium iron phosphate battery gived off, so that long-term the use.

Drawings

Fig. 1 is an overall schematic view of the present invention;

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

fig. 3 is a schematic structural view of the installation box of the present invention;

fig. 4 is an overall schematic view of the separator of the present invention.

In the figure: 1. a housing; 2. a lithium iron phosphate battery; 3. conducting columns for positive and negative electrodes; 4. connecting the guide sheet; 5. a notch; 6. a limiting plate; 7. a connecting rod; 8. a support frame; 9. a slide bar; 10. a limiting clamping groove; 11. a limiting frame; 12. an electric connection groove; 13. a groove; 14. installing a box; 15. a pressure spring; 16. a heat sink; 17. a partition plate; 18. a silica gel stopper; 19. a limiting spring; 20. a sliding plate; 21. a fixing strip; 22. and (4) a filter screen.

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.

Referring to fig. 1-4, the present invention provides an embodiment: the lithium iron phosphate battery pack comprises a shell 1, wherein a lithium iron phosphate battery 2 is arranged in the shell 1, the lithium iron phosphate battery 2 is provided with a plurality of gaps 5, the gaps 5 are provided with a plurality of gaps 5, the outer part of each gap 5 is provided with a limiting plate 6, one end of each limiting plate 6 is provided with a connecting rod 7, each connecting rod 7 penetrates through each gap 5 and extends to the inside of the shell 1 to be welded with one side of the lithium iron phosphate battery 2, a supporting frame 8 is arranged below each gap 5, sliding rods 9 are arranged at the lower end and the upper end of each supporting frame 8, mounting boxes 14 are arranged at two sides below the inside of the shell 1, sliding plates 20 are arranged in the mounting boxes 14, the lower ends of the sliding rods 9 penetrate through the shell 1 and extend to the inside of the mounting boxes 14 to be welded with the sliding plates 20, limiting springs 19 are arranged at one side of each sliding plate 20, and silica gel limiting blocks 18 are arranged at the upper ends of the sliding rods 9, the surface of limiting plate 6 is provided with spacing draw-in groove 10, the inside block with limiting plate 6 of the spacing draw-in groove 10 of 18 embedding of silica gel stopper, baffle 17 is installed to the inside below of casing 1, pressure spring 15 is installed to the below of baffle 17, slide bar 9 is stirred to the accessible, the silica gel stopper 18 that makes the upper end of slide bar 9 breaks away from the inside spacing draw-in groove 10 of limiting plate 6, thereby can separate lithium iron phosphate battery 2 and support frame 8, after dialling corresponding connection guide 4, can drive lithium iron phosphate battery 2 and break away from casing 1, conveniently change, the installation is also simple and convenient.

Further, the positive and negative pole of leading is installed to lithium iron phosphate battery 2's upper end and is led electrical pillar 3, installs between a plurality of lithium iron phosphate battery 2 and connects conducting strip 4, and positive and negative pole is led electrical pillar 3 through connection conducting strip 4 and is connected conducting strip 4 electric connection, and a plurality of lithium iron phosphate batteries 2 are through connecting conducting strip 4 electric connection each other.

Further, the below both sides of a plurality of lithium iron phosphate battery 2 all are provided with recess 13, and recess 13 sets up structure as an organic whole with lithium iron phosphate battery 2, reduces the contact between lithium iron phosphate battery 2 and the casing 1 through recess 13, improves the radiating effect.

Further, a heat sink 16 is installed at the lower part inside the casing 1, a heat dissipation fan is installed inside the heat sink 16, and a heat exchange hole is formed at the rear part of the casing 1, so that heat exchange can be performed on the lower part through the heat sink 16 at the lower end, thereby reducing the temperature emitted by the lithium iron phosphate battery 2, and facilitating long-term use.

Further, spacing frame 11 is installed to the preceding terminal surface of casing 1, and the internally mounted of spacing frame 11 has the electricity receiving tank 12, connects electricity receiving tank 12 all with a plurality of lithium iron phosphate battery 2 electric connection, carries out fixed circuit through spacing frame 11.

Further, the internally mounted of baffle 17 has fixed strip 21, and fixed strip 21 is provided with four, all installs filter screen 22 between four fixed strips 21, and baffle 17 through the inside below of casing 1 carries on spacingly to lithium iron phosphate battery 2, and accessible pressure spring 15 cooperates support frame 8 for lithium iron phosphate battery 2's overall position keeps firm.

The working principle is as follows: when the lithium iron phosphate battery is used, after the lithium iron phosphate battery 2 is clamped into the shell 1, the lithium iron phosphate battery 2 is limited by the partition plate 17 below the inner part of the shell 1, the pressure spring 15 is matched with the support frame 8, so that the whole position of the lithium iron phosphate battery 2 is kept stable, when the lithium iron phosphate battery is stressed, the whole structure state is stable, the working effect is improved, the vibration is reduced, the heat exchange can be carried out on the lower part through the radiator 16 at the lower end, the temperature emitted by the lithium iron phosphate battery 2 is reduced, the lithium iron phosphate battery can be used for a long time, when the lithium iron phosphate battery 2 needs to be replaced or disassembled and assembled, the sliding rod 9 can be pulled, the silica gel limiting block 18 at the upper end of the sliding rod 9 is separated from the limiting clamping groove 10 inside the limiting plate 6, the lithium iron phosphate battery 2 can be separated from the support frame 8, after the corresponding connecting guide sheet 4 is pulled out, the lithium iron phosphate battery 2 can be driven to be separated from the shell 1, the convenient change, the installation is also simple and convenient, inserts the back fast, can fix after going into limiting plate 6 with silica gel stopper 18 card.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Lithium iron phosphate group battery, including casing (1), its characterized in that: the utility model discloses a lithium iron phosphate battery, including casing (1), be provided with lithium iron phosphate battery (2) inside casing (1), lithium iron phosphate battery (2) are provided with a plurality of, the both sides of casing (1) all are provided with breach (5), breach (5) are provided with a plurality of, just the outside of breach (5) is provided with limiting plate (6), connecting rod (7) are installed to the one end of limiting plate (6), connecting rod (7) pass breach (5) and extend to casing (1) inside and one side welded connection with lithium iron phosphate battery (2), the below of breach (5) is provided with support frame (8), slide bar (9) are all installed to the lower extreme and the upper end of support frame (8), install bin (14) are all installed to the inside below both sides of casing (1), the internally mounted of install sliding plate (20), the lower extreme of slide bar (9) passes casing (1) and extends to inside and sliding plate (20) welded connection of install bin (14), sliding plate (20) are welded Connect, spacing spring (19) are installed to one side of sliding plate (20), silica gel stopper (18) are installed to the upper end of slide bar (9), the surface of limiting plate (6) is provided with spacing draw-in groove (10), silica gel stopper (18) imbed inside and limiting plate (6) block of spacing draw-in groove (10), baffle (17) are installed to the inside below of casing (1), pressure spring (15) are installed to the below of baffle (17).

2. The lithium iron phosphate battery pack of claim 1, wherein: the utility model discloses a lithium iron phosphate battery, including iron phosphate battery (2), positive negative pole is installed and is led electrical pillar (3), a plurality of install between iron phosphate battery (2) and connect guide card (4), positive negative pole is led electrical pillar (3) through connection guide card (4) and is connected guide card (4) electric connection.

3. The lithium iron phosphate battery pack of claim 1, wherein: a plurality of the below both sides of lithium iron phosphate battery (2) all are provided with recess (13), recess (13) set up structure as an organic whole with lithium iron phosphate battery (2).

4. The lithium iron phosphate battery pack of claim 1, wherein: the radiator (16) is installed to the inside below of casing (1), the internally mounted of radiator (16) has radiator fan, just the rear of casing (1) is provided with the hole of giving a heat transfer.

5. The lithium iron phosphate battery pack of claim 1, wherein: spacing frame (11) are installed to the preceding terminal surface of casing (1), the internally mounted of spacing frame (11) has and connects accumulator (12), connect accumulator (12) all with a plurality of lithium iron phosphate battery (2) electric connection.

6. The lithium iron phosphate battery pack of claim 1, wherein: the inside mounting of baffle (17) has fixed strip (21), fixed strip (21) are provided with four, four all install filter screen (22) between fixed strip (21).