Device capable of improving air bag edge of soft package battery

Abstract

The utility model relates to the technical field of lithium ion batteries, in particular to a device capable of improving an air bag edge of a soft package battery, which comprises a battery main body, an air bag is arranged on the battery main body, an air bag edge is arranged on the air bag, an air bag pit is arranged on the air bag edge, and an adsorption mechanism is arranged on the air bag pit. And a clamping mechanism and a pressing mechanism are arranged on the adsorption mechanism. According to the utility model, a gas adsorption mode is adopted, the external carrier is arranged in the gas bag pit area on the gas bag side when the battery core is packaged, gas generated in the formation and aging process of the battery core is slowly adsorbed on the external carrier, the gas bag side is not deformed due to gas gathering, and on the premise, the area of the gas bag side is reduced, so that the packaging efficiency is improved. The use amount of the aluminum plastic film is reduced; and after the battery cell is formed, the external carrier and the air bag edge are cut, and then the external carrier is subjected to subsequent recycling and cleaning steps for cyclic utilization.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium ion battery technical field, concretely relates to a device that can improve soft package battery air pocket edge. BACKGROUND

[0002] Lithium ion battery can be divided into soft package battery and metal shell according to shell appearance, due to the great difference of shell, application field also has obvious difference, each has the advantages and disadvantages, soft package battery, its shell is formed by the thin film with higher plasticity and certain mechanical strength, and is commonly known as aluminum plastic film, the structure of aluminum plastic film generally includes three layers, and from outside to inside is nylon layer, aluminum foil layer and adhesive layer respectively;The nylon layer has the function of air isolation, the aluminum foil provides the function of forming and framework, and the adhesive layer is mainly composed of polypropylene, which is mainly used for battery packaging, and has the function of closed isolation, and provides a closed environment for the battery;The production process of lithium battery is basically the same, and the soft package battery needs to be slitting during assembly, and the aluminum plastic film is wound and punched into a shape, which is used for storing the battery body, and then the battery is preliminarily packaged, due to the particularity of the formation process of the soft package battery, the negative pressure formation cannot be carried out, and in the battery formation and subsequent aging process, SEI film and some side reactions are formed, and a large amount of gas such as hydrogen, carbon dioxide, methane and ethane is generated;Due to the different battery production environment and material system, it is difficult to estimate the gas production of the battery, generally according to the experience of each family, a part of the aluminum plastic film is reserved as the air pocket edge to store the gas, and with the increase of the battery capacity, generally, the larger the air pocket edge needs to be reserved, the larger the amount of aluminum plastic film is, and this part of the aluminum plastic film will be cut off after the completion of the battery aging.

[0003] The initial design of the air pocket edge is to store the gas generated during the formation and aging of the battery, and the air pocket edge will be cut off as waste during the formation of the battery, which causes great waste;However, if the air pocket is designed to be insufficient, the air pocket edge will be severely deformed due to the accumulation of a large amount of gas after the formation and aging of the battery, which will cause the mechanical hand to be unable to effectively clamp the battery, and there will be the risk of misclamping, battery falling, battery collision and even short circuit.

[0004] Based on this, a device capable of improving the air pocket edge of the soft package battery is provided, which can eliminate the disadvantages of the existing device. UTILITY MODEL CONTENTS

[0005] In view of the above problems, a device capable of improving the air pocket edge of the soft package battery is provided, which solves the problem that the air pocket edge will be severely deformed due to the accumulation of a large amount of gas.

[0006] In order to solve the prior art problems, the utility model provides a device that can improve soft -pack battery gas pocket edge, including battery main part, be equipped with gas pocket on the battery main part, be equipped with gas pocket edge on the gas pocket, be equipped with gas pocket pit on the gas pocket edge, be equipped with adsorption mechanism on the gas pocket pit, be equipped with joint mechanism and pressing mechanism on the adsorption mechanism.

[0007] Preferably, the adsorption mechanism includes a mounting plate, a mounting block and an external carrier, the mounting plate is installed on the gas pocket pit, the mounting block is provided on the side of the mounting plate away from the gas pocket edge, and the external carrier is detachably installed on the mounting block.

[0008] Preferably, the joint mechanism includes a clamping block, a fixed plate, a clamping groove and a first reset spring, the fixed plate is symmetrically installed on the side wall of the external carrier, the clamping block is slidably arranged on the fixed plate, the first reset spring is connected to the side wall of the clamping block and the inner wall of the fixed plate at both ends, and the clamping groove that cooperates with the clamping block is symmetrically provided on the mounting block.

[0009] Preferably, the pressing mechanism includes a pressing block, a second reset spring, an abutting block and an abutting block, the pressing block is slidably arranged on the inner wall of the mounting block, the abutting block is provided on the side of the pressing block close to the mounting block, the second reset spring is connected to the bottom wall of the pressing block and the inner wall of the mounting block at both ends, the abutting block is provided on the side of the external carrier close to the mounting block, the abutting block and the abutting block are in abutting cooperation, and the unlocking mechanism for abutting the clamping block is provided on the pressing block.

[0010] Preferably, the unlocking mechanism includes a connecting rope, a fixed column, an unlocking block, a third reset spring, a sliding push block, a guide rail and a ball, the connecting rope is symmetrically provided on both sides of the pressing block, the fixed column is symmetrically arranged on the inner wall of the mounting block, the unlocking block is symmetrically slidably arranged on the inner wall of the mounting block, the connecting rope is connected to the side wall of the unlocking block by passing around the fixed column, the sliding push block is symmetrically slidably arranged on the inner wall of the mounting block, the end of the sliding push block close to the external carrier is in abutting cooperation with the clamping block, the end of the sliding push block away from the external carrier is in abutting cooperation with the unlocking block, the third reset spring is connected to the side wall of the unlocking block and the inner wall of the mounting block at both ends, the guide rail is provided on the side wall of the unlocking block, and the ball that slidably cooperates with the guide rail is provided on the side wall of the sliding push block.

[0011] The utility model compared with prior art has the beneficial effects that:

[0012] 1. The utility model discloses a gas adsorption mode is used, in the gas bag edge gas bag pit area, install a piece of external carrier when the electric core package, the gas produced in the electric core formation and aging process, slow adsorption on the external carrier, and the gas bag edge will not produce deformation because of the gas gathering, under this premise, reduce the area of gas bag edge, reach the use amount of the aluminum plastic film is reduced, after the electric core is completed forming, the external carrier and the gas bag edge will be cut, then the subsequent recovery of external carrier is carried out, and the cleaning step is recycled.

[0013] 2. The utility model discloses the quick installation and unlocking of external carrier are realized to the quick installation of external carrier and the quick recovery of external carrier are realized, and the working efficiency is improved. ACCURACY

[0014] Figure 1 It is a kind of device that can improve the three-dimensional structure schematic diagram of soft package battery gas bag edge.

[0015] Figure 2 It is a kind of device that can improve the partial three-dimensional structure schematic diagram of soft package battery gas bag edge Figure 1 .

[0016] Figure 3 It is a kind of device that can improve the partial three-dimensional structure schematic diagram of soft package battery gas bag edge Figure 2 .

[0017] Figure 4 It is a kind of device that can improve the partial three-dimensional structure schematic diagram of soft package battery gas bag edge Figure 3 .

[0018] The reference signs in the drawing are: 101, battery main body;102, gas bag;103, gas bag edge;104, gas bag pit;200, adsorption mechanism;201, mounting plate;202, mounting block;203, external carrier;300, clamping mechanism;301, clamping block;302, fixed plate;303, clamping groove;304, first reset spring;400, pressing mechanism;401, pressing block;402, second reset spring;403, resistance block;404, abutting block;500, unlocking mechanism;501, connecting rope;502, fixed column;503, unlocking block;504, third reset spring;505, sliding push block;506, guide rail;507, ball. DETAILED DESCRIPTION

[0019] In order to further understand the features, technical means and specific purposes and functions reached by the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.

[0020] Refer to Figures 1-4The utility model provides an apparatus capable of improving soft package battery air pocket edge, including battery main body 101, be equipped with air pocket 102 on battery main body 101, be equipped with air pocket edge 103 on air pocket 102, be equipped with air pocket pit 104 on air pocket edge 103, be equipped with adsorption mechanism 200 on air pocket pit 104, be equipped with clamping mechanism 300 and pressing mechanism 400 on adsorption mechanism 200.

[0021] By setting the external carrier 203 installed in the air pocket pit 104, the gas generated during the formation and aging of the battery cell is adsorbed, so that the air pocket edge 103 will not deform due to the accumulation of gas, and under this premise, the area of the air pocket edge 103 is reduced to reduce the use of aluminum plastic film; after the battery cell is completed, the external carrier 203 and the air pocket edge 103 will be cut, and then the external carrier 203 is recycled and cleaned, and recycled, and the clamping mechanism 300 and the pressing mechanism 400 are provided to realize the quick installation and disassembly of the external carrier 203.

[0022] Refer to Figures 2-3 The adsorption mechanism 200 includes a mounting plate 201, a mounting block 202, and an external carrier 203, the mounting plate 201 is installed on the air pocket pit 104, the mounting block 202 is provided on the side of the mounting plate 201 away from the air pocket edge 103, the external carrier 203 is detachably installed on the mounting block 202, and the clamping mechanism 300 is provided on the external carrier 203.

[0023] The external carrier 203 is aligned with the mounting block 202 and slides, the external carrier 203 is installed through the clamping mechanism 300, and the external carrier 203 is used to adsorb the gas generated during the formation and aging of the battery cell, so that the air pocket edge 103 will not deform due to the accumulation of gas.

[0024] Refer to Figures 2-3 The clamping mechanism 300 includes a clamping block 301, a fixed plate 302, a clamping groove 303, and a first reset spring 304, the fixed plate 302 is symmetrically installed on the side wall of the external carrier 203, the clamping block 301 is slidably provided on the fixed plate 302, the first reset spring 304 is connected to the side wall of the clamping block 301 and the inner wall of the fixed plate 302 at both ends, and the clamping groove 303 matched with the clamping block 301 is symmetrically provided on the mounting block 202.

[0025] The external carrier 203 is aligned with the mounting block 202 and slides, the clamping block 301 is forced to retract, when the clamping block 301 encounters the clamping groove 303, the first reset spring 304 drives the clamping block 301 to reset and clamps the clamping groove 303, so that the clamping installation of the external carrier 203 is completed.

[0026] Refer to Figures 2-3The pressing mechanism 400 comprises a pressing block 401, a second reset spring 402, an abutting block 403 and an abutting block 404, the pressing block 401 is slidingly arranged on the inner wall of the mounting block 202, the abutting block 403 is arranged on the side of the pressing block 401 close to the mounting block 202, the second reset spring 402 is connected to the bottom wall of the pressing block 401 and the inner wall of the mounting block 202 respectively, the abutting block 404 is arranged on the side of the external carrier 203 close to the mounting block 202, the abutting block 403 is in abutting cooperation with the abutting block 404, and the pressing block 401 is provided with an unlocking mechanism 500 for abutting the clamping block 301.

[0027] The pressing block 401 is pressed to drive the abutting block 403 to move downward, and the abutting block 403 can push the abutting block 404 to move.

[0028] Referring to Figures 2-4 The unlocking mechanism 500 comprises a connecting rope 501, a fixed column 502, an unlocking block 503, a third reset spring 504, a sliding push block 505, a guide rail 506 and a ball 507, the connecting rope 501 is symmetrically arranged on the both sides of the pressing block 401, the fixed column 502 is symmetrically arranged on the inner wall of the mounting block 202, the unlocking block 503 is symmetrically slidingly arranged on the inner wall of the mounting block 202, the other end of the connecting rope 501 is connected to the side wall of the unlocking block 503 through the fixed column 502, the sliding push block 505 is symmetrically slidingly arranged on the inner wall of the mounting block 202, the end of the sliding push block 505 close to the external carrier 203 is in abutting cooperation with the clamping block 301, the end of the sliding push block 505 away from the external carrier 203 is in abutting cooperation with the unlocking block 503, the third reset spring 504 is connected to the side wall of the unlocking block 503 and the inner wall of the mounting block 202 respectively, the guide rail 506 is arranged on the side wall of the unlocking block 503, and the ball 507 in sliding cooperation with the guide rail 506 is arranged on the side wall of the sliding push block 505.

[0029] The pressing block 401 is pressed to pull the connecting rope 501 to drive the unlocking block 503 to slide, the unlocking block 503 slides to push the sliding push block 505 to slide, the sliding push block 505 pushes the clamping block 301 to achieve the unlocking of the clamping block 301 and the clamping groove 303, so that the external carrier 203 is disassembled.

[0030] Working principle: align the external carrier 203 to the mounting block 202 and slide, the clamping block 301 is forced to retract, when the clamping block 301 meets the clamping groove 303, the first reset spring 304 will drive the clamping block 301 to reset and clamp the clamping groove 303, so as to complete the clamping installation of the external carrier 203; by setting the external carrier 203 installed in the air bag pit 104, adsorbing the gas generated in the formation and aging process of the battery cell, so that the air bag edge 103 will not be deformed because of the gas aggregation, on the premise, reduce the area of the air bag edge 103, achieve the purpose of reducing the use of aluminum plastic film; after the formation of the battery cell is completed, the external carrier 203 and the air bag edge 103 will be cut; when disassembling is needed, press the pressing block 401 to drive the abutting block 403 to move downward, the abutting block 403 can push the abutting block 404 to move, pressing the pressing block 401 can pull the connecting rope 501 to drive the unlocking block 503 to slide, the unlocking block 503 can push the sliding push block 505 to slide, the sliding push block 505 can push the clamping block 301 to achieve the unlocking of the clamping block 301 and the clamping groove 303, so as to complete the disassembly of the external carrier 203, and facilitate the quick recovery of the external carrier 203.

[0031] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A device for improving the edge of the air bag in a pouch battery, characterized in that, The battery includes a battery body (101), an air bag (102) is provided on the battery body (101), an air bag edge (103) is provided on the air bag edge (103), an air bag pit (104) is provided on the air bag pit (104), an adsorption mechanism (200) is provided on the adsorption mechanism (200), and a snap-fit ​​mechanism (300) and a pressing mechanism (400) are provided on the adsorption mechanism (200).

2. The device for improving the edge of the air bag in a soft-pack battery according to claim 1, characterized in that, The adsorption mechanism (200) includes a mounting plate (201), a mounting block (202), and an external carrier (203). The mounting plate (201) is installed on the air bag pit (104). The mounting block (202) is provided on the side of the mounting plate (201) away from the air bag edge (103). The external carrier (203) is detachably installed on the mounting block (202). The external carrier (203) is provided with a snap-fit ​​mechanism (300).

3. The device for improving the edge of the air bag in a soft-pack battery according to claim 2, characterized in that, The latching mechanism (300) includes a latching block (301), a fixing plate (302), a latching groove (303), and a first return spring (304). The fixing plate (302) is symmetrically installed on the side wall of the external carrier (203). The latching block (301) is slidably provided on the fixing plate (302). The two ends of the first return spring (304) are respectively connected to the side wall of the latching block (301) and the inner wall of the fixing plate (302). The mounting block (202) is symmetrically provided with latching grooves (303) that cooperate with the latching block (301).

4. The device for improving the edge of the air bag in a soft-pack battery according to claim 1, characterized in that, The pressing mechanism (400) includes a pressing block (401), a second return spring (402), a stop block (403), and a stop block (404). The pressing block (401) is slidably disposed on the inner wall of the mounting block (202). The pressing block (401) has a stop block (403) on the side of the mounting block (202) near the pressing block (401). The two ends of the second return spring (402) are respectively connected to the bottom wall of the pressing block (401) and the inner wall of the mounting block (202). The stop block (404) is disposed on the side of the external carrier (203) near the mounting block (202). The stop block (403) and the stop block (404) abut against each other. The pressing block (401) is provided with an unlocking mechanism (500) for abutting the locking block (301).

5. The device for improving the edge of the air bag in a soft-pack battery according to claim 4, characterized in that, The unlocking mechanism (500) includes a connecting rope (501), a fixed post (502), an unlocking block (503), a third reset spring (504), a sliding push block (505), a guide rail (506), and a ball bearing (507). Connecting ropes (501) are symmetrically arranged on both sides of the pressing block (401). The fixed post (502) is symmetrically arranged on the inner wall of the mounting block (202). The unlocking block (503) is symmetrically slidably arranged on the inner wall of the mounting block (202). The other end of the connecting rope (501) passes around the fixed post (502) and connects to the side wall of the unlocking block (503). The sliding push block... The blocks (505) are symmetrically slidably disposed on the inner wall of the mounting block (202). The end of the sliding push block (505) near the external carrier (203) abuts against the locking block (301), and the end of the sliding push block (505) away from the external carrier (203) abuts against the unlocking block (503). The two ends of the third reset spring (504) are respectively connected to the side wall of the unlocking block (503) and the inner wall of the mounting block (202). The side wall of the unlocking block (503) is provided with a guide rail (506), and the side wall of the sliding push block (505) is provided with a ball (507) that slides with the guide rail (506).

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