Composite current collector hot melting device

Abstract

The utility model relates to the technical field of electrochemical devices, in particular to a composite current collector hot melting device which comprises a bottom plate, a fixing mechanism is fixedly connected to the upper side of the bottom plate, a hot pressing mechanism is slidably connected to the upper side of the bottom plate, and a vacuum mechanism is fixedly connected to one end of the top of the fixing mechanism. One end in the vacuum mechanism is fixedly connected with a temperature detection mechanism, and the other end in the vacuum mechanism is fixedly connected with a heating mechanism. According to the composite current collector hot melting device, through the arrangement of the sealing box, the vacuum valve and the vacuum pump, when the composite current collector hot melting device is used, an operator pumps air out of the sealing box through the vacuum pump, and through cooperation of the vacuum valve, it is guaranteed that external air does not enter the sealing box, so that the whole composite current collector hot melting process is conducted in a vacuum state; and the product quality reduction caused by impurities generated in the heating process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical devices, in particular to a composite current collector hot-melting device. Background Art

[0002] The composite current collector is a "sandwich" structure, with a polymer layer (such as PET, PP or PI) as the inner layer and metal conductive layers (such as Al or Cu) on both sides. The current collector is one of the indispensable electrode materials for lithium-ion batteries, and has the important functions of carrying active substances (carrying capacity) and collecting microcurrents (conductivity). Thinning and functionalization are the main development directions of current collectors. The 8-9um Al foil current collector and the 4-5um Cu foil current collector have almost reached the ultimate level of manufacturability of lithium-ion batteries. Further thinning of the current collector leads to reduced strength and difficulty in mass application. Although functionalized current collectors such as carbon coating, LFP, and ceramics can improve adhesion, internal resistance, safety performance, etc., there are still some negative effects, such as higher process control requirements, increased costs, or reduced energy density. Composite current collectors integrate the characteristics of thin and light, high-safety current collectors and have been widely studied in recent years.

[0003] A composite current collector hot-melt device and a composite current collector production line are disclosed in the Chinese utility model patent application disclosure CN 219600435 U. The composite current collector hot-melt device includes a main body and a heating component; the main body is provided with a heating cavity, and the main body is provided with an opening for the composite current collector to extend into the heating cavity; the heating component is accommodated in the heating cavity; wherein the heating component is used to heat the composite current collector extending into the heating cavity so that the middle polymer layer of the composite current collector melts. The composite current collector hot-melt device adopts a hot-melt decomposition method and utilizes the huge melting point difference between different materials to obtain a composite current collector with good conductive performance in which the two side metal coatings can be mutually conductive. The composite current collector obtained by the composite current collector hot-melt device can stabilize the battery cell tab welding process, and the battery can maintain a good electrical performance state during long-term use.

[0004] However, the device is not equipped with a vacuum mechanism. Failure to draw a vacuum will affect the composite current collector's exposure to the air, making it susceptible to interference from external factors such as oxygen and moisture, thereby affecting the material's function. The device is not equipped with a temperature detection mechanism, and is unable to monitor the hot melt temperature inside the hot melt equipment in real time, thereby being unable to accurately adjust and set operating parameters. Utility Model Content

[0005] The purpose of the utility model is to provide a composite current collector hot-melting device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A composite current collector hot-melting device comprises a bottom plate, an upper side of the bottom plate is fixedly connected with a fixing mechanism, and an upper side of the bottom plate is slidably connected with a hot pressing mechanism;

[0008] One end of the top of the fixing mechanism is fixedly connected with a vacuum mechanism, one end inside the vacuum mechanism is fixedly connected with a temperature detection mechanism, and the other end inside the vacuum mechanism is fixedly connected with a heating mechanism.

[0009] Preferably, the fixing mechanism comprises a mounting plate and a bracket, the upper side of the bottom plate is fixedly connected to the bracket, the other end of the bracket is fixedly connected to the mounting plate, and the upper side of the mounting plate is fixedly connected to the vacuum mechanism.

[0010] Preferably, the vacuum mechanism includes a sealing box, a vacuum valve and a vacuum pump. The sealing box is fixedly connected to the upper side of the mounting plate, a slot is provided on the top of the sealing box, one end of the sealing box is fixedly connected to the vacuum pump, and the other end of the vacuum pump is fixedly connected to the vacuum valve.

[0011] Preferably, the heating mechanism includes a heating chamber and a heating plate, one end of the sealed box is fixedly connected to the heating chamber, and the inner side of the heating chamber is fixedly connected to the heating plate.

[0012] Preferably, the temperature detection mechanism includes a pump fan, a condenser, a sensor and a display. A display is provided at one end of the upper side of the sealed box, a pump fan is fixedly connected to the bottom inside the sealed box, a condenser is fixedly connected to the inside of the sealed box, and a sensor is fixedly connected to one side of the condenser.

[0013] Preferably, the hot pressing mechanism includes a hot pressing chamber, an upper hot pressing head, a lower hot pressing piece and an insulation board. The hot pressing chamber is fixedly connected to the inner side of the bottom of the sealed box, the upper hot pressing head is fixedly connected to the bottom of the hot pressing chamber, the lower hot pressing piece is clamped on the other end of the upper hot pressing head, and the insulation board is slidably connected to the upper side of the bottom plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. This composite current collector hot-melt device is provided with a sealing box, a vacuum valve and a vacuum pump. When in use, the operator extracts air in the sealing box through the vacuum pump, and cooperates with the vacuum valve to ensure that outside air does not enter the sealing box, so that the entire composite current collector hot-melt process is carried out in a vacuum state, preventing impurities from being generated during the heating process, which reduces the product quality.

[0016] 2. This composite current collector hot melt device is equipped with a pump fan, a condenser, a sensor and a display. When in use, the sensor and the display can monitor the hot melt temperature inside the hot melt equipment in real time, and the operating parameters can be accurately adjusted and set through the pump fan and the condenser to prevent material damage caused by excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the vacuum mechanism of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the heating mechanism and the temperature detection mechanism of the utility model;

[0020] Figure 4 It is a schematic side view of the hot pressing mechanism of the utility model.

[0021] In the figure: 100, bottom plate; 201, mounting plate; 202, bracket; 301, sealing box; 302, vacuum valve; 303, vacuum pump; 401, heating chamber; 402, heating plate; 501, pump fan; 502, condenser; 503, sensor; 504, display; 601, hot pressing chamber; 602, upper hot pressing head; 603, lower hot pressing part; 604, insulation board. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0024] A composite current collector hot-melting device includes a bottom plate 100, a fixing mechanism is fixedly connected to the upper side of the bottom plate 100, and a hot pressing mechanism is slidably connected to the upper side of the bottom plate 100. Through the arrangement of the bottom plate 100, the fixing mechanism and the hot pressing mechanism, when in use, an operator installs the hot pressing mechanism on the bottom plate 100 through the components of the fixing mechanism, thereby enhancing the overall stability of the device, facilitating installation and disassembly;

[0025] One end of the top of the fixing mechanism is fixedly connected to a vacuum mechanism, one end inside the vacuum mechanism is fixedly connected to a temperature detection mechanism, and the other end inside the vacuum mechanism is fixedly connected to a heating mechanism. Through the setting of the vacuum mechanism, the temperature detection mechanism and the heating mechanism, when in use, the operator starts the device, first converts the device into an overall vacuum state, and then starts to heat the composite current collector, and at the same time monitors the temperature in real time, so as to facilitate the experimental operator to control the hot melt work as a whole, facilitate operation, and prevent overheating.

[0026] In this embodiment, preferably, the fixing mechanism includes a mounting plate 201 and a bracket 202, the bracket 202 is fixedly connected to the upper side of the base plate 100, the other end of the bracket 202 is fixedly connected to the mounting plate 201, and the upper side of the mounting plate 201 is fixedly connected to the vacuum mechanism. Through the arrangement of the mounting plate 201 and the bracket 202, when in use, the operator places the hot pressing mechanism assembly through the mounting plate 201, and supports the sealing box 301 of the vacuum mechanism through the bracket 202, so that the overall structure of the composite current collector hot melt device is stable and easy to disassemble.

[0027] In the present embodiment, preferably, the vacuum mechanism includes a sealing box 301, a vacuum valve 302 and a vacuum pump 303. The sealing box 301 is fixedly connected to the upper side of the mounting plate 201, a slot is provided at the top of the sealing box 301, a vacuum pump 303 is fixedly connected to one end of the sealing box 301, and a vacuum valve 302 is fixedly connected to the other end of the vacuum pump 303. Through the arrangement of the sealing box 301, the vacuum valve 302 and the vacuum pump 303, when in use, the operator extracts air in the sealing box 301 through the vacuum pump 303, and cooperates with the vacuum valve 302 to ensure that outside air does not enter the sealing box 301, so that the entire composite current collector hot melt process is carried out in a vacuum state, thereby preventing impurities from being generated during the heating process and reducing the product quality.

[0028] In the present embodiment, preferably, the heating mechanism includes a heating chamber 401 and a heating plate 402. The heating chamber 401 is fixedly connected to one end of the interior of the sealed box 301, and the heating plate 402 is fixedly connected to the inner side of the heating chamber 401. By setting the heating chamber 401 and the heating plate 402, when in use, the composite current collector is heated by the heating plate 402, and the heating chamber 401 can play a role of thermal insulation and isolation, thereby preventing impurities from entering the reaction and preventing reaction by-products from overflowing.

[0029] In the present embodiment, preferably, the temperature detection mechanism includes a pump fan 501, a condenser 502, a sensor 503 and a display 504. A display 504 is provided at one end of the upper side of the sealed box 301. The pump fan 501 is fixedly connected to the bottom of the inner side of the sealed box 301. The condenser 502 is fixedly connected to the inner side of the sealed box 301. The sensor 503 is fixedly connected to one side of the condenser 502. Through the arrangement of the pump fan 501, the condenser 502, the sensor 503 and the display 504, when in use, the sensor 503 and the display 504 can monitor the hot melt temperature inside the hot melt equipment in real time, and the operating parameters can be accurately adjusted and set through the pump fan 501 and the condenser 502 to prevent material damage caused by excessive temperature.

[0030] In the present embodiment, preferably, the hot pressing mechanism includes a hot pressing chamber 601, an upper hot pressing head 602, a lower hot pressing piece 603 and an insulation board 604; the hot pressing chamber 601 is fixedly connected to the inner side of the bottom of the sealing box 301; the upper hot pressing head 602 is fixedly connected to the bottom of the hot pressing chamber 601; the lower hot pressing piece 603 is clamped at the other end of the upper hot pressing head 602; the insulation board 604 is slidably connected to the upper side of the bottom plate 100; through the arrangement of the hot pressing chamber 601, the upper hot pressing head 602, the lower hot pressing piece 603 and the insulation board 604, when in use, the upper hot pressing head 602 and the lower hot pressing piece 603 are moved and pressed against each other, so that the composite current collector is pressed by the hot pressing chamber 601 and then detached from the insulation board 604.

[0031] When a composite current collector hot-melt device of the present embodiment is in use, through the arrangement of the base plate 100, the fixing mechanism and the hot-pressing mechanism, the operator installs the hot-pressing mechanism on the base plate 100 through the components of the fixing mechanism, thereby enhancing the overall stability of the device and facilitating installation and disassembly. When in use, the operator starts the device, first converts the device into an overall vacuum state, and then starts to heat the composite current collector, while monitoring the temperature in real time, thereby facilitating the experimental operator to control the hot-melt work as a whole, facilitating operation, and preventing overheating.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A composite current collector hot-melt device, characterized in that: It comprises a bottom plate (100), a fixing mechanism is fixedly connected to the upper side of the bottom plate (100), and a hot pressing mechanism is slidably connected to the upper side of the bottom plate (100); One end of the top of the fixing mechanism is fixedly connected with a vacuum mechanism, one end inside the vacuum mechanism is fixedly connected with a temperature detection mechanism, and the other end inside the vacuum mechanism is fixedly connected with a heating mechanism.

2. A composite current collector hot-melting device according to claim 1, characterized in that: The fixing mechanism comprises a mounting plate (201) and a bracket (202); the bracket (202) is fixedly connected to the upper side of the bottom plate (100); the mounting plate (201) is fixedly connected to the other end of the bracket (202); and the vacuum mechanism is fixedly connected to the upper side of the mounting plate (201).

3. A composite current collector hot-melting device according to claim 2, characterized in that: The vacuum mechanism comprises a sealing box (301), a vacuum valve (302) and a vacuum pump (303); the sealing box (301) is fixedly connected to the upper side of the mounting plate (201); a slot is provided at the top of the sealing box (301); one end of the sealing box (301) is fixedly connected to the vacuum pump (303); and the other end of the vacuum pump (303) is fixedly connected to the vacuum valve (302).

4. A composite current collector hot-melting device according to claim 3, characterized in that: The heating mechanism comprises a heating chamber (401) and a heating plate (402); one end of the sealed box (301) is fixedly connected to the heating chamber (401); and the inner side of the heating chamber (401) is fixedly connected to the heating plate (402).

5. A composite current collector hot-melting device according to claim 3, characterized in that: The temperature detection mechanism comprises a pump fan (501), a condenser (502), a sensor (503) and a display (504); a display (504) is provided at one end of the upper side of the sealed box (301); a pump fan (501) is fixedly connected to the bottom of the inner side of the sealed box (301); a condenser (502) is fixedly connected to the inner side of the sealed box (301); and a sensor (503) is fixedly connected to one side of the condenser (502).

6. A composite current collector hot-melting device according to claim 3, characterized in that: The hot pressing mechanism comprises a hot pressing chamber (601), an upper hot pressing head (602), a lower hot pressing piece (603) and a heat insulation board (604); the hot pressing chamber (601) is fixedly connected to the inner side of the bottom of the sealing box (301); the upper hot pressing head (602) is fixedly connected to the bottom of the hot pressing chamber (601); the lower hot pressing piece (603) is clamped at the other end of the upper hot pressing head (602); and the heat insulation board (604) is slidably connected to the upper side of the bottom plate (100).

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