Lithium battery non-liquid-injection pole piece recycling and infiltrating equipment

Abstract

The utility model discloses recycling and infiltrating equipment for a non-liquid-injected pole piece of a lithium battery, and aims to solve the problems that the existing recycling and infiltrating equipment for the lithium battery increases working procedures for treating larger pole pieces, adopts a sectional working mode and cannot meet the production requirement of efficiently recycling the pole pieces on a large scale. The equipment comprises a bottom frame, a flexible conveying belt and an infiltrating machine installed on the bottom frame, the flexible conveying belt comprises an upper grid belt and a lower grid belt, and the left side of the top end of the infiltrating machine drives a feeding upper driving roller and a feeding lower driving roller through a first driving assembly; and the right side of the top end of the infiltrating machine drives a discharging upper driving roller and a discharging lower driving roller through a second driving assembly. According to the utility model, the up-down S-shaped winding type installation is selected, and the infiltration time is prolonged on the premise of ensuring the feeding speed, so that an infiltrated pole piece recovery process is combined with assembly line type flexible conveying, the lithium battery recovery capacity is greatly improved, and the lithium battery high-efficiency production situation is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium electrode piece recycling technical field, concretely relates to a lithium electricity is not injected liquid pole piece recovery infiltration equipment. BACKGROUND

[0002] The un-injected liquid pole piece refers to the scrap pole piece generated in the production process of lithium batteries, and the battery pole piece fails to meet the quality standards due to various reasons in the manufacturing process. These scrap pole pieces usually contain valuable materials such as lithium, cobalt, nickel, etc. Therefore, recycling and processing these scrap pole pieces have important economic and environmental significance. The lithium recovery infiltration equipment is a device for recycling and processing un-injected liquid pole pieces. It realizes efficient and environmentally friendly recovery of un-injected liquid pole pieces through the combination of physical, chemical and biological technologies. The application of this device can help to realize efficient, safe and environmentally friendly recovery of un-injected liquid pole pieces and promote the transformation of intelligent, green and standardized development.

[0003] The common lithium recovery infiltration equipment is usually a reaction kettle device or a drum washing device. The main function of the reaction kettle device is to provide a closed environment for the chemical reaction of the reactants under specific temperature, pressure and stirring conditions. The drum washing device is used for infiltration cleaning of the washing materials under the action of water and detergent through the rotation of the drum. Although these two devices can meet the requirements of constant temperature, constant pressure and stirring for the infiltration process, they require small piece structures for incoming materials. Large pole pieces need to be pretreated and cut, which not only increases the process but also generates many aluminum foil scraps, affecting the purity of the recovered film material. Moreover, the reaction kettle device or the drum washing device is a segmented working mode, which is difficult to produce efficiently and continuously, and cannot meet the production needs of efficient and large-scale recovery of pole pieces. UTILITY MODEL CONTENTS

[0004] (1) Technical problem to be solved

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a lithium un-injected liquid pole piece recovery infiltration equipment. This equipment aims to solve the problem that the existing lithium recovery infiltration equipment needs to be pretreated and cut for processing large pole pieces, which not only increases the process but also generates many aluminum foil scraps, affecting the purity of the recovered film material. Moreover, it is a segmented working mode, which is difficult to produce efficiently and continuously, and cannot meet the production needs of efficient and large-scale recovery of pole pieces.

[0006] (2) Technical scheme

[0007] In order to solve the above technical problems, the utility model provides a kind of lithium battery unliquid injection pole piece recovery infiltration equipment, which comprises chassis, flexible conveying belt and installation infiltration machine on chassis, the flexible conveying belt includes upper grid belt and lower grid belt, the top left side of the infiltration machine is driven by first drive assembly with feeding upper driving roller and feeding lower driving roller, the top right side of the infiltration machine is driven by second drive assembly with discharging upper driving roller and discharging lower driving roller, the inside of the infiltration machine is rotatably connected with multiple driven rollers by bearing, the outer surface of feeding upper driving roller, discharging upper driving roller and multiple driven rollers is wound by upper grid belt, the outer surface of feeding lower driving roller, discharging lower driving roller and multiple driven rollers is wound by lower grid belt, the feeding upper driving roller is located in the right side of feeding lower driving roller and forms feeding part, and the discharging upper driving roller is located in the left side of discharging lower driving roller and forms discharging part.

[0008] Preferably, the upper surface right side of the infiltration machine is fixedly connected with two supports, two balance rollers are rotatably connected with the two supports by bearings, and the upper grid belt is interlacedly wound on the outer surfaces of the two balance rollers.

[0009] Further, the multiple driven rollers are divided into two groups, and the two groups of driven rollers are distributed alternately.

[0010] Further, a water tank sealing cover is installed on the upper surface of the infiltration machine, and the upper grid belt is located on the upper side of the water tank sealing cover.

[0011] Further, a collection assembly is installed on the right side of the infiltration machine, and the right side of the collection assembly gradually inclines downward.

[0012] Further, a wastewater outlet, a heat exchange pure water inlet, a normal temperature pure water inlet and a heat exchange pure water outlet are installed on the bottom of the infiltration machine, and the bottom of the infiltration machine is inclined and gradually lowered towards the wastewater outlet.

[0013] Further, multiple sealing bottom plates are installed on the front and rear sides of the chassis, and multiple supporting legs are installed on the lower surface edge of the chassis.

[0014] Further, a sealing upper cover is installed on the upper surface of the infiltration machine, a feeding port is arranged on the left side of the sealing upper cover, a discharging port is arranged on the right side of the sealing upper cover, a gas collecting hood is fixedly connected to the left side of the sealing upper cover and located at the feeding port, an exhaust pipe is fixedly connected to the output end of the gas collecting hood, a dehumidification fan is installed on the exhaust pipe, the dehumidification fan is fixedly connected to the upper surface of the sealing upper cover, a dehumidifier is fixedly connected to the upper surface of the sealing upper cover, and the input end of the dehumidifier is connected to the sealing upper cover through a connecting pipe, the feeding port of the sealing upper cover is located at the feeding part of the infiltration machine, and the discharging port of the sealing upper cover is located at the discharging part of the infiltration machine.

[0015] Further, the number of exhaust pipes is two, and the output end of the gas collecting cover is gradually reduced and communicates with the two exhaust pipes.

[0016] Further, the front and rear sides of the sealing upper cover are both provided with a plurality of glass door plates. Advantages

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The utility model discloses, through install sealing upper cover on recycling infiltration component, make recycling infiltration component form relatively closed space, the large amount of water vapor that produces when carrying out infiltration to battery pole is collected through gas collecting cover, then is discharged to collection water tank through dehumidification fan and exhaust pipe, and cooperate dehumidifier as auxiliary dehumidification, thereby reduce workshop environment humidity, make water droplet condensation in workshop, satisfy lithium electricity recycling constant temperature and humidity's environmental requirement, reach water circulation utilization's goal.

[0019] The utility model discloses, through the use of grid belt flexible conveying can reduce the friction between the pole piece, ensure the cleanliness of recycling membrane material, and the aluminum foil gap is less in the whole piece demolding process, avoid the aluminum foil debris to react with pure water easily, lead to the problem of recycling membrane material aluminum content overproof, thereby ensure the purity and recovery rate of recycling membrane material, and the infiltration machine can set different heating temperature and soaking time to carry out infiltration treatment to the pole piece, can dissolve the bottom coating glue of pole piece and the membrane material on the pole piece, thereby make the aluminum foil separation reach the initial condition of stripping membrane material.

[0020] The utility model discloses, through the use of grid belt, solve the hot water environment, good soak, good demolding's difficult problem, for the utilization of infiltration machine space as far as possible reduce the use of pure water, grid belt selects upper and lower S type winding type installation, in the limited infiltration machine space, realize the longest route, under the premise of guaranteeing the feeding speed, extend infiltration time, thereby combine infiltration pole piece recycling process and flow line type flexible conveying, break through traditional segmented mode, greatly improve lithium electricity recovery capacity and meet lithium electricity high efficiency production present situation. DRAWINGS

[0021] Figure 1 It is the left view three-dimensional structure schematic diagram of the sealing upper cover of the utility model.

[0022] Figure 2 It is the right view three-dimensional structure schematic diagram of the sealing upper cover of the utility model.

[0023] Figure 3 It is the three-dimensional structure schematic diagram of the utility model.

[0024] Figure 4 It is the three-dimensional structure schematic diagram of the infiltration machine of the utility model.

[0025] Figure 5 is a mounting structure schematic view of the flexible conveying belt of the utility model.

[0026] Figure 6 is a mounting structure schematic view of the flexible conveying belt of the utility model.

[0027] The marks in the drawing are: 1, sealed upper cover; 2, dehumidifier; 3, feed inlet; 4, discharge outlet; 5, gas collecting cover; 6, exhaust pipe; 7, dehumidification fan; 8, connecting pipe; 9, glass door plate; 11, base frame; 12, flexible conveying belt; 13, soaking machine; 121, upper grid belt; 122, lower grid belt; 131, first drive assembly; 132, feed upper driving roller; 133, feed lower driving roller; 134, second drive assembly; 135, discharge upper driving roller; 136, discharge lower driving roller; 137, driven roller; 14, support; 15, balance roller; 16, water tank sealing cover; 17, collection assembly; 18, waste water outlet; 19, heat exchange pure water inlet; 20, normal temperature pure water inlet; 21, heat exchange pure water outlet; 22, sealing bottom plate; 23, supporting leg. DETAILED DESCRIPTION

[0028] The specific embodiment is a lithium battery liquid injection-free pole piece recovery soaking equipment, a structure schematic view of which is shown in the drawing. Figures 1-6 The equipment includes a base frame 11, a flexible conveying belt 12 and a soaking machine 13 mounted on the base frame 11. Since the mechanical performance of the battery pole piece is poor, the battery pole piece is avoided from being damaged to affect the subsequent recovery, and the flexible conveying is selected as the flexible conveying belt 12. The flexible conveying belt 12 includes an upper grid belt 121 and a lower grid belt 122. The top left side of the soaking machine 13 is driven by a first drive assembly 131 to have a feed upper driving roller 132 and a feed lower driving roller 133. The first drive assembly 131 can include two motors to drive the feed upper driving roller 132 and the feed lower driving roller 133 respectively. A motor protective cover is mounted on the outside of the first drive assembly 131 to prevent water vapor overflow in the heating soaking process from causing motor corrosion, affecting the normal operation and safety of the motor. The top right side of the soaking machine 13 is driven by a second drive assembly 134 to have a discharge upper driving roller 135 and a discharge lower driving roller 136. The second drive assembly 134 can include two motors to drive the discharge upper driving roller 135 and the discharge lower driving roller 136 respectively. A plurality of driven rollers 137 are rotatably connected inside the soaking machine 13 through bearings. The upper grid belt 121 is wound on the outer surfaces of the feed upper driving roller 132, the discharge upper driving roller 135 and the plurality of driven rollers 137. The lower grid belt 122 is wound on the outer surfaces of the feed lower driving roller 133, the discharge lower driving roller 136 and the plurality of driven rollers 137. The feed upper driving roller 132 is located on the right side of the feed lower driving roller 133 and forms a feed part. The discharge upper driving roller 135 is located on the left side of the discharge lower driving roller 136 and forms a discharge part.

[0029] Because the battery pole piece is a sandwich structure, film material / aluminum foil / film material, double-sided infiltration is required. The lower grid belt 122 protrudes, which is the feeding area of the recovered battery pole piece. The upper grid belt 121 ensures that the upper layer of the battery pole piece is infiltrated. The sealed upper cover 1 can seal the upper side of the infiltration machine 13, preventing water vapor overflow and ensuring the cleanliness of the workshop environment.

[0030] As shown in Figure 1 and Figure 3 : In this embodiment, two brackets 14 are fixedly connected to the right side of the upper surface of the infiltration machine 13. Two balance rollers 15 are rotatably connected to the two brackets 14 through bearings. The upper grid belt 121 is wound around the outer surfaces of the two balance rollers 15, which can tension the upper grid belt 121 and ensure the operation of the upper grid belt 121.

[0031] As shown in Figure 3 , Figure 5 and Figure 6 : In this embodiment, the plurality of driven rollers 137 are divided into two groups, and the two groups of driven rollers 137 are staggered vertically.

[0032] The plurality of driven rollers 137 are underwater rollers, staggered vertically and with the upper grid belt 121 and the lower grid belt 122 clamped and inserted therebetween, so that the upper grid belt 121 and the lower grid belt 122 are installed in an S-shaped winding manner, thereby realizing the longest travel route in the limited space of the infiltration machine 13, extending the infiltration time under the premise of ensuring the feeding speed.

[0033] As shown in Figure 3 and Figure 4 : In this embodiment, a water tank sealing cover 16 is installed on the upper surface of the infiltration machine 13. The upper grid belt 121 is located on the upper side of the water tank sealing cover 16. The water tank sealing cover 16 reduces the overflow of water vapor and simultaneously insulates the heated pure water, thereby ensuring the airtightness, insulation and aesthetics of the equipment.

[0034] As shown in Figure 3 and Figure 4 : In this embodiment, a collection assembly 17 is installed on the right side of the infiltration machine 13. The right side of the collection assembly 17 gradually inclines downward. By arranging the collection assembly 17, the battery pole pieces that fail to flow into the next work section are transported by the lower grid belt 122 and fall into the collection assembly 17, thereby facilitating recovery.

[0035] As shown in Figure 4 : In this embodiment, a wastewater outlet 18, a heat exchange pure water inlet 19, a normal temperature pure water inlet 20 and a heat exchange pure water outlet 21 are installed on the bottom of the infiltration machine 13. The bottom of the infiltration machine 13 is inclined and gradually lowered towards the wastewater outlet 18.

[0036] Wastewater outlet 18 can discharge wastewater from cleaning the soaking machine 13. The temperature of the added pure water is controlled by a mixture of heat exchange pure water and room temperature pure water. The water temperature inside the soaking machine 13 is detected by a temperature sensor. Temperature fluctuations can be reflected by the inflow and outflow of pure water at the heat exchange pure water outlet 21. By designing the bottom of the soaking machine 13 as a slope, it is easy to clean and replace the pure water in the soaking machine 13 and avoid material accumulation.

[0037] like Figure 4 As shown: In this embodiment, multiple sealing base plates 22 are installed on both the front and rear sides of the base frame 11, and multiple support legs 23 are installed on the lower surface edge of the base frame 11. The sealing base plates 22 protect the electronic components inside the base frame 11 and prevent the overflowing water vapor from causing equipment corrosion. The electronic components inside the base frame 11 provide electrical control for the dehumidification device and the recycling and wetting device.

[0038] A sealing cover 1 is installed on the upper surface of the impregnation machine 13. A feed inlet 3 is provided on the left side of the sealing cover 1, and a discharge outlet 4 is provided on the right side of the sealing cover 1. A gas collection cover 5 is fixedly connected to the left side of the sealing cover 1 and located at the feed inlet 3. An exhaust pipe 6 is fixedly connected to the output end of the gas collection cover 5. A dehumidifying fan 7 is installed on the exhaust pipe 6. The dehumidifying fan 7 is fixedly connected to the upper surface of the sealing cover 1. A dehumidifier 2 is fixedly connected to the upper surface of the sealing cover 1, and its input end is connected to the sealing cover 1 through a connecting pipe 8. The feed inlet 3 of the sealing cover 1 is located at the feed section of the impregnation machine 13, and the discharge outlet 4 of the sealing cover 1 is located at the discharge section of the impregnation machine 13.

[0039] like Figure 1 As shown: In this embodiment, there are two exhaust pipes 6. The output end of the gas collection cover 5 gradually narrows and connects to the two exhaust pipes 6. A bracket is fixedly connected to the right side of the upper surface of the sealing cover 1, and the two exhaust pipes 6 are fixedly connected to the upper surface of the bracket.

[0040] like Figure 2 As shown: In this embodiment, multiple glass door panels 9 are installed on both the front and rear sides of the sealing cover 1. The glass door panels 9 are transparent, allowing observation of the internal operation of the equipment and the water mist condition inside the equipment while sealing the equipment.

[0041] Working principle: first, the infiltration machine 13 in the pure water to the required temperature and the amount of supplement, then need to be placed in the feed on the active roller 132 and the feed on the active roller 133 forming the feed part of the battery pole piece, at this time the battery pole piece is located on the lower grid belt 122, at this time the first drive assembly 131 drive feed on the active roller 132 and feed on the active roller 133 rotation, the second drive assembly 134 drive discharge on the active roller 135 and discharge on the active roller 136 rotation, while cooperating with a plurality of driven rollers 137 to hold the battery pole piece between the upper grid belt 121 and the lower grid belt 122, and along the plurality of driven rollers 137 S-shaped in the infiltration machine 13 moves, so as to realize the longest route in the limited infiltration machine 13 space, prolong the infiltration time under the premise of ensuring the feeding speed, when the battery pole piece is infiltrated in the heated pure water for a certain time, the bottom of the pole piece is dissolved in the pure water, and then the pole piece moves to the right side of the discharge port along with the upper grid belt 121 and the lower grid belt 122.

[0042] At the same time, a large amount of water vapor generated during the feeding of the battery pole piece will overflow, at this time the dehumidification fan 7 and the dehumidifier 2 are started, at this time the gas hood 5 collects the water vapor, and the water vapor is pumped and discharged along the exhaust pipe 6 through the dehumidification fan 7, and the dehumidifier 2 as an auxiliary dehumidification mechanism collects and discharges the water vapor overflowing from the infiltration machine 13, further reduces the environmental humidity, when the exhaust pipe 6 discharges the water vapor into the subsequent spraying equipment, the water vapor is attached to the spraying water droplets and settles, relieving the water mist deposition pressure, thereby reducing the environmental humidity, and the water flowing into the water tank of the spraying equipment achieves water circulation, the above structure is simple, highly utilizes the equipment sealing structure, low in cost, strong in installation performance, and the overflowing water vapor can be recycled.

[0043] Due to the principle that the pole piece material must not be contaminated, the above-mentioned equipment material is selected to be wear-resistant, high-temperature-resistant and corrosion-resistant, the flexible conveying can break through the production capacity, the winding type conveying guarantees the process, and the operation cost is reduced, the dehumidification and heat preservation work is in place, and the normal operation of the equipment and the workshop is guaranteed.

[0044] All the technical features in the embodiment can be freely combined according to actual needs.

[0045] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A lithium battery un-impregnated electrode sheet recovery impregnation device, the device comprising a base frame (11), a flexible conveying belt (12) and an impregnation machine (13) mounted on the base frame (11), characterized in that: The flexible conveying belt (12) comprises an upper grid belt (121) and a lower grid belt (122), the top left side of the infiltrator (13) is driven by a first driving assembly (131) with an upper feeding driving roller (132) and a lower feeding driving roller (133), the top right side of the infiltrator (13) is driven by a second driving assembly (134) with an upper discharging driving roller (135) and a lower discharging driving roller (136), the inside of the infiltrator (13) is rotationally connected with a plurality of driven rollers (137) through bearings, the upper grid belt (121) is wound on the outer surfaces of the upper feeding driving roller (132), the upper discharging driving roller (135) and the plurality of driven rollers (137), the lower grid belt (122) is wound on the outer surfaces of the lower feeding driving roller (133), the lower discharging driving roller (136) and the plurality of driven rollers (137), the upper feeding driving roller (132) is located at the right side of the lower feeding driving roller (133) and forms a feeding part, and the upper discharging driving roller (135) is located at the left side of the lower discharging driving roller (136) and forms a discharging part.

2. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 1, characterized by, The upper surface of the infiltrator (13) is fixedly connected with two brackets (14) on the right side, two balance rollers (15) are rotationally connected with the two brackets (14) through bearings, and the upper grid belt (121) is wound on the outer surfaces of the two balance rollers (15).

3. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 1, characterized by, The plurality of driven rollers (137) are divided into two groups, and the two groups of driven rollers (137) are distributed in an up-and-down staggered manner.

4. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 1, characterized by, The upper surface of the infiltrator (13) is provided with a water tank sealing cover (16), and the upper grid belt (121) is located on the upper side of the water tank sealing cover (16).

5. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 1, characterized by, A collecting assembly (17) is installed on the right side of the infiltrator (13), and the right side of the collecting assembly (17) gradually inclines downward.

6. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 1, wherein A wastewater outlet (18), a heat exchange pure water inlet (19), a normal temperature pure water inlet (20) and a heat exchange pure water outlet (21) are installed on the bottom of the infiltrator (13), and the bottom of the infiltrator (13) is inclined and gradually lowered towards the wastewater outlet (18).

7. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 1, characterized by, A plurality of sealing bottom plates (22) are installed on the front and rear sides of the chassis (11), and a plurality of supporting legs (23) are installed on the lower surface edges of the chassis (11).

8. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 1, characterized by, An upper sealing cover (1) is installed on the upper surface of the infiltrator (13), a feeding port (3) is arranged on the left side of the upper sealing cover (1), a discharging port (4) is arranged on the right side of the upper sealing cover (1), a gas collecting cover (5) is fixedly connected to the left side of the upper sealing cover (1) and located at the feeding port (3), an output end of the gas collecting cover (5) is fixedly connected with an exhaust pipe (6), a dehumidifying fan (7) is installed on the exhaust pipe (6), the dehumidifying fan (7) is fixedly connected to the upper surface of the upper sealing cover (1), a dehumidifier (2) is fixedly connected to the upper surface of the upper sealing cover (1) and an input end is connected with the upper sealing cover (1) through a connecting pipe (8), the feeding port (3) of the upper sealing cover (1) is located at the feeding part of the infiltrator (13), and the discharging port (4) of the upper sealing cover (1) is located at the discharging part of the infiltrator (13).

9. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 8, characterized by, The number of the exhaust pipes (6) is two, and the output end of the gas collecting cover (5) is gradually reduced and communicates with the two exhaust pipes (6).

10. The lithium battery un-impregnated electrode sheet recovery impregnation apparatus according to claim 9, wherein The front and back sides of the sealing upper cover (1) are both provided with a plurality of glass door panels (9).

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