CN216720129U

CN216720129U - Soft package lithium battery with expansion-proof packaging structure

Info

Publication number: CN216720129U
Application number: CN202123364408.1U
Authority: CN
Inventors: 袁中华; 熊开立
Original assignee: Shenzhen Huihuaxin Battery Technology Co ltd
Current assignee: Shenzhen Huihuaxin Battery Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-10
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to a soft package lithium battery with an anti-expansion packaging structure in the technical field of soft package lithium batteries, which comprises a shell and a soft package block arranged in the shell, wherein the soft package block consists of a left soft package block and a right soft package block, the outer layer of the left soft packaging block and the outer layer of the right soft packaging block are both provided with a layer of diaphragm, the diaphragms are respectively attached to the outer layer of the left soft packaging block and the outer layer of the right soft packaging block through adhesion, the rear end of the soft packaging block is provided with a power-off assembly, the power-off assembly is composed of a main control detector, a lead switch, a central shaft, a connecting plate, a power supply detector, a lead and an iron core, the main control detector is installed at the lower end of the central shaft, the central shaft is connected with the connecting plate, the connecting plate is fixedly installed on the bottom surface in the shell through a supporting plate, the power supply detector is stably installed at the rear end of the soft packaging block, and the lead is wound on the surface of the iron core and can not expand; and the safety of the battery during charging is improved.

Description

Soft package lithium battery with expansion-proof packaging structure

Technical Field

The utility model relates to the technical field of soft package lithium batteries, in particular to a soft package lithium battery with an anti-expansion packaging structure.

Background

At present, the soft package lithium battery on the market is generally packaged in vacuum by adopting an aluminum film, and the outmost layer of the lithium battery is wrapped by nylon. The lithium cell is rectangular slice thing, therefore when a plurality of batteries connect in parallel to form soft packet of lithium cell group, can pile up a plurality of lithium cells to adopt insulating tape to tie up the back and put into in the PVC cover. However, the existing lithium battery pack shell structure has the following defects: the high-rate lithium battery can generate a large amount of heat when continuously discharging with large current, and the lithium battery is easy to deform and expand along with the rise of the temperature of the battery pack, so that the performance of the battery cell is reduced. The shell of lithium cell itself does not have good rigid structure, and the expansion when can't preventing the lithium cell to be heated, and the soft packet of lithium cell group connection structure adopts the insulating tape do not have rigid structure, can't provide the reaction force to the lithium cell group and prevent the thermal expansion of lithium cell to insulating tape coefficient of heat conductivity is low, and the radiating effect that leads to tying up the department is not good. On the other hand, PVC sleeve pipe self has intensity lowly, can't provide reaction force to lithium cell group and hinder soft packet of lithium cell group and be heated the inflation equally, probably even because current soft packet of lithium cell group shell structure heat dissipation is not good, and the temperature exceeds PVC's the biggest deformation temperature, can cause the PVC sleeve pipe self to be heated when soft packet of lithium cell group generates heat and produce deformation, can't continue to play the effect of fixed soft packet of lithium cell group.

The existing soft package lithium battery also has the following defects: 1) the expansion phenomenon is easily caused due to long-term use of the existing soft package lithium battery; 2) the current soft package lithium battery is easy to generate danger because the battery cannot be automatically disconnected when being fully charged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects and provides a soft package lithium battery with an expansion-preventing packaging structure, which can not generate the expansion phenomenon; and the safety of the battery during charging is improved.

The purpose of the utility model is realized by the following modes:

soft packet of lithium cell with prevent inflation packaging structure, including the shell with set up the soft packing piece in the shell, soft packing piece comprises left soft packing piece and right soft packing piece, the skin of left side soft packing piece and the skin of right soft packing piece all are equipped with the one deck diaphragm, and the diaphragm passes through the bonding and attaches respectively in the skin of left soft packing piece and the skin of right soft packing piece, and the rear end of soft packing piece is equipped with the outage subassembly, and the outage subassembly comprises main control detector, wire switch, center pin, connecting plate, power detector, wire and iron core, and the main control detector is installed in the lower extreme of center pin, and the center pin is connected the installation with the connecting plate, and the bottom surface in the shell is passed through backup pad fixed mounting to the connecting plate, and the power detector is installed in the rear end of soft packing piece in the stability, and the wire twines in the surface of iron core.

In the above description, as a further aspect, heat conducting plates for conducting generated heat out of the outer casing are mounted at both ends of the partition plate.

In the above description, as a further aspect, the heat conducting plate is provided in a zigzag shape to facilitate heat dissipation.

In the above description, as a further scheme, the rear end of the left flexible packaging block and the rear end of the right flexible packaging block are both provided with an induction column for inducing the electric quantity of the lithium battery.

In the above description, as a further scheme, one end of the wire is connected to a side end of the induction column, and a front end of the induction column penetrates through a rear end of the left flexible packaging block and a rear end of the right flexible packaging block.

The utility model has the following beneficial effects: the outer layers of the left flexible packaging block and the right flexible packaging block are respectively provided with a layer of diaphragm which is respectively adhered to the outside of the left flexible packaging block by adhesion

The layer and the outer layer of the right flexible packaging block ensure that the battery is not easy to expand, thereby prolonging the service life of the lithium battery; the rear end of the flexible packaging block is provided with the power-off assembly, the power-off assembly can automatically cut off the power after the battery is fully charged, and the use safety of the lithium battery is greatly improved.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is an enlarged partial view of A of FIG. 1 according to an embodiment of the present invention;

in the figure: 1-shell, 2-left soft package block, 3-right soft package block, 4-partition board, 5-heat conducting plate, 6-diaphragm, 7-induction column, 8-power-off component, 9-main control detector, 10-wire switch, 11-power detector, 12-central shaft, 13-connecting plate, 14-supporting plate, 15-wire and 16-iron core.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the present embodiment, please refer to fig. 1-2, the soft package lithium battery with an anti-expansion package structure comprises a housing 1 and a soft package block disposed in the housing 1, the soft package block is composed of a left soft package block 2 and a right soft package block 3, the outer layer of left side soft packing block 2 and the outer layer of right soft packing block 3 all are equipped with one deck diaphragm 6, diaphragm 6 attaches respectively in the outer layer of left soft packing block 2 and the outer layer of right soft packing block 3 through the bonding, the rear end of soft packing block is equipped with outage subassembly 8, outage subassembly 8 comprises main control detector 9, wire switch 10, center pin 12, connecting plate 13, power detector 11, wire 15 and iron core 16, main control detector 9 installs in the lower extreme of center pin 12, center pin 12 is connected the installation with connecting plate 13, connecting plate 13 passes through backup pad 14 fixed mounting in the bottom surface of shell 1, power detector 11 is installed in soft packing block stably.

The rear end of, wire 15 twines in iron core 16's surface, the both ends of baffle 4 are all installed and are used for deriving the outside heat-conducting plate 5 of shell 1 with the production of heat, heat-conducting plate 5 sets up to more convenient radiating cockscomb structure, the response post 7 that is used for responding to lithium battery electric quantity is all installed to the rear end of left side soft packing block 2 and the rear end of right soft packing block 3, the one end of wire 15 is connected in the side of response post 7, and the front end of response post 7 passes the rear end of left soft packing block 2 and the rear end of right soft packing block 3.

The separator 6 of the present embodiment is provided as a battery separator 6 having a uniform thickness and high pore temperature resistance.

The working principle of the soft package lithium battery with the expansion-proof packaging structure is as follows: can produce the heat when charging, and be provided with baffle 4 between left soft packing piece 2 and the right soft packing piece 3, the both ends of baffle 4 have set up the heat-conducting plate 5 of cockscomb structure, can dispel the heat effectively, the live time of battery is improved, and the skin of left soft packing piece 2 and the skin of right soft packing piece 3 have all set up one deck diaphragm 6, diaphragm 6 is attached respectively in the skin of left soft packing piece 2 and the skin of right soft packing piece 3 through the bonding, make the difficult expanded phenomenon that produces of battery, the life of lithium cell has been improved, the rear end of soft packing piece has set up outage subassembly 8 again, outage subassembly 8 can make the battery cut off the power supply by oneself after being full of electricity, the safety in utilization of lithium cell has been improved greatly.

The foregoing is a more detailed description of the utility model, taken in conjunction with the specific preferred embodiments thereof, and is not intended to limit the utility model to the particular forms disclosed. It will be apparent to those skilled in the art that various modifications, additions and substitutions can be made without departing from the spirit of the utility model.

Claims

1. Soft packet of lithium cell with prevent inflation packaging structure, including the shell with set up the soft packing piece in the shell, soft packing piece comprises left soft packing piece and right soft packing piece, its characterized in that: the outer layer of left side soft packing piece and the outer layer of right soft packing piece all are equipped with the one deck diaphragm, the diaphragm passes through the bonding and attaches respectively in the outer layer of left soft packing piece and the outer layer of right soft packing piece, the rear end of soft packing piece is equipped with the outage subassembly, the outage subassembly is by the master control detector, the wire switch, the center pin, the connecting plate, power detector, wire and iron core constitute, the master control detector is installed in the lower extreme of center pin, the center pin is connected the installation with the connecting plate, the connecting plate passes through the bottom surface of backup pad fixed mounting in the shell, the rear end in soft packing piece is installed to the power detector stability, the wire twines on the surface of iron core.

2. The lithium battery pack having an expansion-preventing packaging structure according to claim 1, wherein: be provided with the baffle between left side soft packing block and the right soft packing block, the heat-conducting plate that is used for deriving the shell outside with the production of heat is all installed at the both ends of baffle.

3. The lithium pouch battery having an anti-swelling packing structure according to claim 2, wherein: the heat conducting plate is arranged to be a sawtooth shape which is more convenient for heat dissipation.

4. The lithium battery pack having an expansion-preventing packaging structure according to claim 1, wherein: and the rear end of the left flexible packaging block and the rear end of the right flexible packaging block are both provided with induction columns for inducing the electric quantity of the lithium battery.

5. The lithium battery pack having an expansion-preventing packaging structure according to claim 4, wherein: one end of the lead is connected to the side end of the induction column, and the front end of the induction column penetrates through the rear ends of the left flexible packaging block and the right flexible packaging block.