Lithium ion battery negative electrode material powder pressure increasing system

Abstract

The utility model discloses a lithium ion battery cathode material powder pressure boosting system, which relates to the technical field of cathode material processing and sequentially comprises a feeding device, two heating devices and a cooling device. The feeding device comprises a feeding bin, a cyclone separator and a first Roots blower, a first weighing module, an airflow arch breaking device and a first drawer type iron remover are arranged in the feeding bin from top to bottom, and the bottom of the feeding bin is connected with the cyclone separator through a conveying pipeline; a first pulse dust collector, a second weighing module, a third level gage and a first jacking arch breaking device are arranged in the cyclone separator from top to bottom, and the first Roots blower is connected with the cyclone separator through a first blower pipeline; the heating device sequentially comprises a heating feeding pipeline, a heating feeding spiral device, a heating kiln and a heating discharging pipeline, and the bottom of the cyclone separator is connected with the heating feeding pipeline of the corresponding heating device. According to the scheme, efficient powder pressing and lifting of the negative electrode material can be achieved, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of negative electrode material processing technology, and in particular to a lithium-ion battery negative electrode material powder pressing and lifting system. Background Technology

[0002] With the rapid development of portable electronic devices and electric vehicles, the performance requirements for lithium-ion batteries are becoming increasingly stringent. Among these requirements, the powder pressing of the anode material is one of the key factors affecting the overall performance of lithium-ion batteries. Currently used lithium-ion anode materials, such as graphite, are prone to capacity decay and structural damage during cycling, which limits the lifespan and performance of lithium-ion batteries. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a lithium-ion battery anode material powder pressing and lifting system, which achieves efficient powder pressing and lifting of anode materials, ensuring product quality.

[0004] In order to achieve the purpose of this utility model, the following solution is proposed:

[0005] A lithium-ion battery anode material powder pressing and lifting system includes, in sequence, a feeding device, two heating devices, and a cooling device.

[0006] The feeding device includes a feeding hopper, a cyclone separator, and a first Roots blower. The feeding hopper is equipped with a first weighing module, an airflow arch-breaking device, and a first drawer-type iron separator from top to bottom. The bottom of the feeding hopper is connected to the cyclone separator through a conveying pipe. The cyclone separator is equipped with a first pulse dust collector, a second weighing module, a third level gauge, and a first lifting arch-breaking device from top to bottom. The first Roots blower is connected to the cyclone separator through a first blower pipe.

[0007] The heating device includes, in sequence, a heating feed pipe, a heating feed screw conveyor, a heating kiln, and a heating discharge pipe. The bottom of the cyclone separator is connected to the heating feed pipe of the corresponding heating device.

[0008] The cooling device includes, in sequence, a cooling feed pipe, a cooling feed screw conveyor, a cooling kiln, and a cooling discharge pipe. The cooling kiln is equipped with multiple spray nozzles.

[0009] Furthermore, the outer wall of the cyclone separator is equipped with a first rapping device, the height of which is located between the third level gauge and the first lifting and arch-breaking device.

[0010] Furthermore, the feeding device also includes a gantry crane and a ton-beating device, both located above the feeding hopper. The gantry crane is used to suspend the ton bags, and the ton-beating device is used to beat the ton bags.

[0011] Furthermore, a magnetic rod is installed on the top of the feed hopper.

[0012] Furthermore, it also includes a discharge device, which includes a discharge hopper, a weighing hopper, and a second Roots blower. The top of the discharge hopper is connected to a cooling discharge pipe via a discharge pipe. The discharge hopper is equipped with a first level gauge and a second drawer-type iron separator from top to bottom. The bottom of the discharge hopper is connected to the weighing hopper via a material pipe. The weighing hopper is equipped with a second pulse dust collector, a third weighing module, a second level gauge, and a second lifting and arch-breaking device from top to bottom. The second Roots blower is connected to the weighing hopper via a second blower pipe.

[0013] Furthermore, a second vibrating device is provided on the outer wall of the weighing hopper, and the height of the second vibrating device is located between the second level gauge and the second lifting and arch-breaking device.

[0014] The beneficial effects of this invention are as follows: by setting up two heating kilns, the reaction time and extent of the material in the kiln can be effectively controlled. By controlling the rotation speed, temperature zone and air flow of the two heating kilns, the reaction of the material can be controlled, the disordered carbon atoms on the surface of the material can be eliminated, the number of micropores can be increased, and the volume change of Li+ can be buffered, thereby increasing the capacity and improving the circulation performance. Attached Figure Description

[0015] Figure 1 A schematic diagram of the feeding device is shown;

[0016] Figure 2 A schematic diagram of the heating device is shown;

[0017] Figure 3 A schematic diagram of the cooling device is shown;

[0018] Figure 4 A schematic diagram of the discharge device is shown;

[0019] Figure 5 The diagram shows the connection relationships between the various devices in the powder pressing and lifting system;

[0020] Figure reference numerals: Feeding device-1, Feed hopper-11, Cyclone separator-12, First Roots blower-13, First weighing module-111, Airflow arch-breaking device-112, First drawer-type iron separator-113, Conveying pipe-14, First pulse dust collector-121, Second weighing module-122, Third level gauge-124, First lifting arch-breaking device-123, First blower pipe-15, First vibrating device-16, Gantry crane-17, Ton beater-18, Heating device-2, Heated feed pipe-21, Heated feed screw conveyor-22, Heated kiln-2 3. Heating feeding pipe - 24. Cooling device - 3. Cooling feeding pipe - 31. Cooling feeding screw - 32. Cooling kiln - 33. Cooling feeding pipe - 34. Spray nozzle - 35. Discharge device - 4. Discharge hopper - 41. Weighing hopper - 42. Second Roots blower - 43. Feeding pipe - 411. First level gauge - 44. Second drawer-type iron separator - 45. Material pipe - 412. Second pulse dust collector - 46. Third weighing module - 47. Second level gauge - 471. Second lifting and arch breaking device - 48. Second blower pipe - 431. Second vibrator device - 49. Detailed Implementation

[0021] like Figure 5 As shown in the figure, this embodiment provides a lithium-ion battery negative electrode material powder pressing and lifting system, which includes a feeding device 1, two heating devices 2, a cooling device 3, and a discharging device 4 in sequence.

[0022] Specifically, such as Figure 1 As shown, the feeding device 1 includes a feeding hopper 11, a cyclone separator 12, and a first Roots blower 13. The top of the feeding hopper 11 is the feeding port, and a magnetic rod is provided at the feeding port to adsorb metal impurities in the material. The feeding hopper 11 is equipped with a first weighing module 111, an airflow arch-breaking device 112, and a first drawer-type iron separator 113 from top to bottom. The first weighing module 111 is used for weighing. The airflow arch-breaking device 112 includes a pneumatic ejector and an air source system. It utilizes the principle of gas pressure to break up the blockage and accumulation of materials by releasing a large amount of compressed gas, allowing them to continue flowing. The first drawer-type iron separator 113 is existing technology and is used to adsorb ferromagnetic impurities. The bottom of the feeding hopper 11 is connected to the cyclone separator 12 through a conveying pipe 14.

[0023] Cyclone separator 12 is a device used for separating gas-solid or liquid-solid systems. Its working principle is based on the rotational motion caused by the tangential introduction of airflow, which causes solid particles or liquid droplets with large inertial centrifugal force to be thrown towards the outer wall surface and separated. It is a widely used separation device in industry.

[0024] The cyclone separator 12 is equipped with, from top to bottom, a first pulse dust collector 121, a second weighing module 122, a third level gauge 124, and a first lifting and arch-breaking device 123. The first pulse dust collector 121 removes dust adhering to the filter medium (bag or filter cartridge) by blowing compressed air. The third level gauge 124 is an instrument that detects changes in the height of solid materials in the container in real time. The first lifting and arch-breaking device 123 is existing technology and is used to accelerate material flow. The first Roots blower 13 is connected to the cyclone separator 12 through the first blower pipe 15. The first Roots blower 13 is used to create negative pressure to facilitate material conveying.

[0025] More specifically, such as Figure 1 As shown, the outer wall of the cyclone separator 12 is provided with a first rapping device 16. The height of the first rapping device 16 is located between the third material level gauge 124 and the first lifting and arch-breaking device 123. The first rapping device 16 is existing technology and is used to rappel the cyclone separator 12 to accelerate material conveying.

[0026] More specifically, such as Figure 1 As shown, the feeding device 1 also includes a gantry crane 17 and a ton-beating device 18, both located above the feeding hopper 11. The gantry crane 17 is used to suspend the ton bag 171 and transfer the ton bag 171 to the feeding port of the feeding hopper 11. The ton-beating device 18 is used to beat the ton bag 171 to accelerate the release of material. The gantry crane 17 and the ton-beating device 18 are both existing technologies, and their structures and principles will not be described in detail here.

[0027] Specifically, such as Figure 1 , Figure 2 As shown, the heating device 2 sequentially includes a heating feed pipe 21, a heating feed screw conveyor 22, a heating kiln 23, and a heating discharge pipe 24. The bottom of the cyclone separator 12 is connected to the heating feed pipe 21 of the first heating device 2, and the heating discharge pipe 24 of the first heating device 2 is connected to the heating feed pipe 21 of the second heating device 2. The heating feed screw conveyor 22 is existing technology and is used to screw-convey the material into the heating kiln 23. Figure 2 In the middle, the heating kiln 23 includes, from left to right, a feeding hood, a kiln head flexible connection pipe, a kiln, a kiln tail flexible connection pipe and a discharge hood. The top of the feeding hood is equipped with a kiln head exhaust pipe, the top of the discharge hood is equipped with a kiln tail exhaust pipe, and the heating discharge pipe 24 is located at the bottom of the discharge hood.

[0028] In this embodiment, two heating kilns 23 are provided. Compared with providing only one heating kiln 23, this embodiment has the following advantages:

[0029] ①The overall material conveying speed is slower, resulting in more thorough heating;

[0030] ②More temperature gradients can be set;

[0031] ③ If only one heating kiln 23 is set up, the length of the heating kiln 23 will be increased, which will result in a large deformation after heating, and the requirements for the material of the heating kiln 23 will be higher.

[0032] ④ In this embodiment, two heating kilns 23 are set up, which can effectively control the reaction time and degree of the material in the kiln. By controlling the rotation speed, temperature zone and air flow of the two heating kilns 23, the reaction of the material can be controlled, the disordered carbon atoms on the surface of the material can be eliminated, the number of micropores can be increased, and the volume change of Li+ can be buffered, the capacity can be increased, and the circulation performance can be improved.

[0033] Specifically, such as Figure 2 , Figure 3 As shown, the cooling device 3 includes a cooling feed pipe 31, a cooling feed screw 32, a cooling kiln 33, and a cooling discharge pipe 34 in sequence. The cooling feed pipe 31 is connected to the heating discharge pipe 24 of the second heating device 2. The cooling kiln 33 is equipped with multiple spray nozzles 35 for cooling and reducing the temperature of the material.

[0034] Specifically, such as Figure 3 , Figure 4 As shown, the discharge device 4 includes a discharge bin 41, a weighing bin 42, and a second Roots blower 43. The top of the discharge bin 41 is connected to a cooling discharge pipe 34 via a discharge pipe 411. The discharge bin 41 is equipped with a first level gauge 44 and a second drawer-type iron separator 45 from top to bottom. The bottom of the discharge bin 41 is connected to the weighing bin 42 via a material pipe 412. The weighing bin 42 is equipped with a second pulse dust collector 46, a third weighing module 47, a second level gauge 471, and a second lifting and arch-breaking device 48 from top to bottom. The second Roots blower 43 is connected to the weighing bin 42 via a second blower pipe 431.

[0035] The first level gauge 44, the second level gauge 471 and the third level gauge 124 have the same structure;

[0036] The first drawer-type iron separator 113 and the second drawer-type iron separator 45 have the same structure.

[0037] The first pulse dust collector 121 and the second pulse dust collector 46 have the same structure;

[0038] The first weighing module 111, the second weighing module 122 and the third weighing module 47 have the same structure;

[0039] The first lifting and arch-breaking device 123 and the second lifting and arch-breaking device 48 have the same structure;

[0040] The first Roots blower 13 and the second Roots blower 43 have the same structure.

[0041] More specifically, the outer wall of the weighing hopper 42 is provided with a second vibrating device 49. The height of the second vibrating device 49 is located between the second level gauge 471 and the second lifting and arch-breaking device 48. The first vibrating device 16 and the second vibrating device 49 have the same structure.

[0042] The above embodiments are only used to illustrate the technical concept and features of this utility model, and are not intended to be unique or to limit this utility model. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. A lithium-ion battery negative electrode material powder pressing and lifting system, characterized in that, It includes, in sequence, a feeding device (1), two heating devices (2), and a cooling device (3); The feeding device (1) includes a feeding hopper (11), a cyclone separator (12) and a first Roots blower (13). The feeding hopper (11) is equipped with a first weighing module (111), an airflow arch-breaking device (112) and a first drawer-type iron separator (113) from top to bottom. The bottom of the feeding hopper (11) is connected to the cyclone separator (12) through a conveying pipe (14). The cyclone separator (12) is equipped with a first pulse dust collector (121), a second weighing module (122), a third level gauge (124) and a first lifting arch-breaking device (123) from top to bottom. The first Roots blower (13) is connected to the cyclone separator (12) through a first blower pipe (15). The heating device (2) includes a heating feed pipe (21), a heating feed screw (22), a heating kiln (23) and a heating discharge pipe (24) in sequence. The bottom of the cyclone separator (12) is connected to the heating feed pipe (21) of the corresponding heating device (2). The cooling device (3) includes, in sequence, a cooling feed pipe (31), a cooling feed screw (32), a cooling kiln (33) and a cooling discharge pipe (34), and the cooling kiln (33) is equipped with multiple spray nozzles (35).

2. The lithium-ion battery negative electrode material powder pressing and lifting system according to claim 1, characterized in that, The outer wall of the cyclone separator (12) is provided with a first vibrating device (16), and the height of the first vibrating device (16) is located between the third level gauge (124) and the first lifting and arch-breaking device (123).

3. The lithium-ion battery negative electrode material powder pressing and lifting system according to claim 1, characterized in that, The feeding device (1) also includes a gantry crane (17) and a ton-beating device (18) both located above the feeding hopper (11). The gantry crane (17) is used to suspend the ton bag (171), and the ton-beating device (18) is used to beat the ton bag (171).

4. The lithium-ion battery negative electrode material powder pressing and lifting system according to claim 1, characterized in that, A magnetic rod is provided on the top of the feed hopper (11).

5. The lithium-ion battery negative electrode material powder pressing and lifting system according to claim 1, characterized in that, It also includes a discharge device (4), which includes a discharge bin (41), a weighing bin (42), and a second Roots blower (43). The top of the discharge bin (41) is connected to a cooling discharge pipe (34) through a discharge pipe (411). The discharge bin (41) is equipped with a first level gauge (44) and a second drawer-type iron remover (45) from top to bottom. The bottom of the discharge bin (41) is connected to the weighing bin (42) through a material pipe (412). The weighing bin (42) is equipped with a second pulse dust collector (46), a third weighing module (47), a second level gauge (471), and a second lifting and arch-breaking device (48) from top to bottom. The second Roots blower (43) is connected to the weighing bin (42) through a second blower pipe (431).

6. The lithium-ion battery negative electrode material powder pressing and lifting system according to claim 5, characterized in that, The outer wall of the weighing silo (42) is equipped with a second vibrating device (49), and the height of the second vibrating device (49) is located between the second level gauge (471) and the second lifting and arch-breaking device (48).

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