Physical discharge tool for lithium battery

Abstract

The utility model discloses a physical discharge tool for a lithium battery, and belongs to the field of battery discharge equipment. The device comprises a rack, a workbench is arranged at the bottom of the rack, a liftable pressing plate is arranged above the workbench, a pair of metal sheets with the positive electrode attribute and the negative electrode attribute are installed on the bottom face of the pressing plate respectively, and a heat conduction plate extending outwards is installed on the side face of the rack. And a resistor which extends downwards in the length direction is arranged at the bottom of the heat conducting plate. According to the utility model, the heat dissipation of the resistor can be realized while the lithium battery is physically discharged, and the utilization of heat energy resources is realized.

Description

Technical Field

[0001] This utility model belongs to the field of battery discharge equipment, and more specifically, relates to a lithium battery physical discharge fixture. Background Technology

[0002] Currently, the recycling of used lithium-ion power batteries primarily employs either live-line crushing or brine discharge for initial processing. However, live-line crushing requires extensive inert gas protection, and improper handling poses a risk of fire or even explosion. Brine discharge, on the other hand, suffers from long processing times and incomplete discharge, while also generating substantial amounts of wastewater requiring secondary treatment. Therefore, there is an urgent need for a safe, environmentally friendly, and stable method for the physical discharge of used lithium-ion power batteries.

[0003] Chinese patent application number CN202121508053.6, published on January 11, 2022, discloses a lithium battery discharge and recycling fixture, including a frame, a lifting device, a discharge device, and a lithium battery positioning device mounted on the frame. The discharge device includes a lifting plate slidably connected to the frame and multiple sets of discharge probes. Each discharge probe is parallel and spaced apart on the lifting plate, with each set of probes corresponding to a set of lithium batteries and used to contact and discharge with the electrodes of the corresponding lithium batteries. The lifting end of the lifting device passes through the top of the frame and connects to the lifting plate, driving the lifting plate to move up and down within the frame. The lithium battery positioning device is located at the bottom of the discharge device and is used to position and fix each lithium battery. This fixture enables batch discharge of multiple sets of lithium batteries, improving the efficiency of lithium battery recycling.

[0004] Chinese patent application number CN201820137691.3, published on September 7, 2018, discloses a battery charging and discharging fixture, including a base, a support plate parallel to the base, and guide rods fixed to the left and right sides of the base for guiding the support plate. A movable metal pad is provided on the lower surface of the support plate; a metal terminal is provided at the bottom of the metal pad; and a connecting wire is connected to the metal pad. The two metal terminals of the fixture contact the positive and negative terminals of the battery respectively, and the outgoing wires are connected to the wires of the charging and discharging cabinet to form a circuit for charging and discharging the battery. During charging and discharging, the battery's status data is collected. The data acquisition line can be connected to the metal pad through a threaded hole to realize real-time acquisition of battery voltage, current, and other status information. This fixture can adapt to square batteries of different sizes and specifications, and the limiting plate and limiting rod can move along the through-hole guide rail according to the specific size of the battery.

[0005] Both of the above solutions use physical means, namely, to form a circuit by contacting the external electrode with the positive and negative terminals of the battery to discharge. However, in the process of discharging lithium batteries, in order to increase the discharge efficiency, a resistor is usually set on the tooling to quickly convert electrical energy into heat energy for release. The existing discharge tooling generally relies on natural cooling to dissipate the heat energy of the resistor, which has the problems of slow heat dissipation efficiency and waste of heat energy resources. At the same time, there are also certain safety hazards when the resistor is continuously at high temperature. Summary of the Invention

[0006] 1. The problem to be solved

[0007] To address the problem that existing lithium battery physical discharge fixtures result in slow resistor heat dissipation and wasted thermal energy during lithium battery discharge, this invention provides a lithium battery physical discharge fixture that can simultaneously dissipate heat from the resistor and utilize thermal energy resources while physically discharging the lithium battery.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] A lithium battery physical discharge fixture includes a frame, a worktable at the bottom of the frame, a liftable pressure plate above the worktable, a pair of metal sheets with positive and negative electrode properties respectively mounted on the bottom surface of the pressure plate, a heat-conducting plate extending outward on the side of the frame, and a resistor extending downward in the length direction at the bottom of the heat-conducting plate.

[0011] As a further improvement to the technical solution, the frame is provided with guide columns extending along the height direction, and guide sleeves are slidably installed on the guide columns, with the pressure plate fixedly connected to the guide sleeves.

[0012] As a further improvement to the technical solution, the upper end of the frame is equipped with a telescopic mechanism, and the telescopic component of the telescopic mechanism extends downward and connects to the pressure plate.

[0013] As a further improvement to the technical solution, the telescopic mechanism is a structure in which the bolt is moved down by rotating the bolt to push the pressure plate.

[0014] As a further improvement to the technical solution, the telescopic mechanism is equipped with a sensor for detecting bolt torque and / or a sensor for detecting the distance between the pressure plate and the battery.

[0015] As a further improvement to the technical solution, a limit block is installed on the lower side of the guide post.

[0016] As a further improvement to the technical solution, a tray is also included; the tray is movably mounted on the worktable and on which the battery to be discharged is placed.

[0017] As a further improvement to the technical solution, guide wheels are installed on both sides of the bottom of the tray, and guide rails matching the guide wheels are installed at corresponding positions on both sides of the worktable.

[0018] As a further improvement to the technical solution, the surface of the tray is covered with a soft pad.

[0019] As a further improvement to the technical solution, the resistors are multiple and arranged at intervals on the heat-conducting plate.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] (1) The present invention provides a lithium battery physical discharge fixture, which has an outwardly extending heat-conducting plate on the side of the frame and a resistor extending downward in the length direction at the bottom of the heat-conducting plate. In this way, when the discharge fixture is working, the resistor located on the side of the frame and extending downward can be placed in a circulating water tank, thereby achieving rapid heat dissipation and cooling of the resistor. At the same time, the dissipated heat can heat the circulating water in the water tank, so that the preheated circulating water can flow to the next process that requires warm water to participate in the operation, thus realizing the utilization of thermal energy resources.

[0023] (2) The present invention provides a lithium battery physical discharge fixture, which, by setting guide columns and guide sleeves, makes the lifting direction of the pressure plate precise, thereby better discharging the battery;

[0024] (3) The present invention provides a lithium battery physical discharge fixture, which is equipped with a sensor for detecting bolt torque and a sensor for detecting the distance between the pressure plate and the battery on the telescopic mechanism. When the pressure plate is pressed down to make the metal sheet contact the battery electrode for discharge, the torque sensor and the distance sensor can effectively control the degree of pressure of the pressure plate, avoiding insufficient pressure leading to unsatisfactory discharge effect or excessive pressure causing battery damage. The limiting block on the lower side of the guide column can also prevent the pressure plate from being pressed down excessively, thus providing further protection for the safe operation of battery discharge.

[0025] (4) The present invention provides a lithium battery physical discharge fixture. By setting a tray, it is easy to cooperate with external equipment to transport the battery. The design of the guide wheel and guide rail makes the movement of the tray in the workbench more convenient and precise, so as to accurately deliver the battery to the discharge station. Furthermore, by setting a soft pad on the tray, the battery is placed more stably on the tray, ensuring the stable operation of the discharge work. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the discharge fixture of this utility model without a tray;

[0027] Figure 2 This is a schematic diagram of the structure of the discharge fixture of this utility model with a tray;

[0028] In the diagram: 1. Frame; 2. Workbench; 3. Pressure plate; 4. Metal sheet; 5. Heat-conducting plate; 6. Resistor; 7. Guide column; 8. Guide sleeve; 9. Telescopic mechanism; 10. Limit block; 11. Tray; 12. Guide wheel. Detailed Implementation

[0029] Exemplary embodiments of the present invention are described in detail below. While these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to practice the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from its spirit and scope. The more detailed description of embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to provide the best mode for carrying out the invention and sufficient to enable those skilled in the art to practice it. Therefore, the scope of the present invention is defined only by the appended claims.

[0030] Example 1

[0031] A lithium battery physical discharge fixture is used in the recycling process of waste lithium batteries to physically discharge lithium batteries. Its specific structure and technical effects are described in detail below.

[0032] like Figure 1 As shown, the discharge fixture includes a frame 1, a worktable 2 at the bottom of the frame 1, and a liftable pressure plate 3 above the worktable 2. A pair of metal plates 4, each with positive and negative polarity, are mounted on the bottom surface of the pressure plate 3. A heat-conducting plate 5 extending outwards is mounted on the side of the frame 1, and a resistor 6 extending downwards in the longitudinal direction is mounted on the bottom of the heat-conducting plate 5. In this embodiment, there are multiple resistors 6, spaced apart on the heat-conducting plate 5.

[0033] In this way, when the discharge fixture is working, the resistor 6, which is located on one side of the frame 1 and extends downward, can be placed in a circulating water tank, thereby achieving rapid heat dissipation and cooling of the resistor 6. At the same time, the dissipated heat can heat the circulating water in the water tank, so that the preheated circulating water can flow to the next process that requires warm water, thus realizing the utilization of thermal energy resources.

[0034] Since discharging the battery requires the pressure plate 3 to press down so that the metal sheet contacts the positive and negative terminals of the battery to form a circuit, the control of the pressure plate 3's downward pressure is crucial. To address this, the discharge fixture has a guide post 7 extending along the height direction on the frame 1. A guide sleeve 8 is slidably mounted on the guide post 7, and the pressure plate 3 is fixedly connected to the guide sleeve 8. The telescopic mechanism 9 uses a structure where rotating a bolt causes the bolt to move downwards and push the pressure plate. Specifically, the top of the frame 1 has a structure with a threaded hole; the threaded hole allows for vertical movement, thereby pushing the pressure plate 3 below via a connecting rod, achieving the lifting and lowering of the pressure plate 3. The telescopic mechanism 9 is equipped with a sensor to detect the bolt torque and / or a sensor to detect the distance between the pressure plate 3 and the battery; in this embodiment, both types of sensors are installed. Additionally, a limit block 10 is installed on the lower side of the guide post 7.

[0035] By setting guide posts 7 and guide sleeves 8, the lifting direction of pressure plate 3 can be made precise, thereby better discharging the battery. When pressure plate 3 presses down to make metal sheet 4 contact the battery electrodes for discharge, torque sensor and distance sensor can effectively control the degree of pressure of pressure plate 3, avoiding insufficient pressure leading to unsatisfactory discharge effect or excessive pressure causing battery damage. The limiting block 10 on the lower side of guide post 7 can also prevent pressure plate 3 from pressing down too much, providing further protection for the safety of battery discharge.

[0036] In addition, such as Figure 2 As shown, the discharge fixture is also equipped with a tray 11, which is movably mounted on the worktable 2, on which the battery to be discharged is placed. Guide wheels 12 are mounted on both sides of the bottom of the tray 11, and guide rails matching the guide wheels 12 are mounted at corresponding positions on both sides of the worktable 2. At the same time, the surface of the tray 11 is covered with a soft pad.

[0037] By setting up tray 11, it is easy to transport batteries in conjunction with external equipment, while the design of guide wheels 12 and guide rails makes the movement of the tray within the workbench 2 more convenient and precise, thereby accurately delivering the batteries to the discharge station. The soft pad makes the placement of the batteries on the tray more stable, ensuring the stable operation of the discharge process.

[0038] In summary, the lithium battery physical discharge fixture of this embodiment can simultaneously dissipate heat from the resistor and utilize thermal energy resources while physically discharging the lithium battery.

Claims

1. A lithium battery physical discharge tooling, comprising a rack (1), the bottom of the rack (1) is provided with a workbench (2), the top of the workbench (2) is provided with a liftable pressing plate (3), the bottom surface of the pressing plate (3) is provided with a pair of metal sheets (4) with positive and negative properties respectively, characterized in that: The side of the frame (1) is provided with an outwardly extending heat-conducting plate (5), and the bottom of the heat-conducting plate (5) is provided with an electric resistance (6) extending downward in length direction.

2. The physical discharge tooling for lithium batteries of claim 1, wherein: The frame (1) is provided with a guide column (7) extending in height direction, and the guide column (7) is slidingly provided with a guide sleeve (8), and the pressing plate (3) is fixedly connected with the guide sleeve (8).

3. The physical discharge tooling for lithium batteries of claim 2, wherein: The upper end of the frame (1) is provided with a telescopic mechanism (9), and the telescopic part of the telescopic mechanism (9) extends downward and is connected with the pressing plate (3).

4. The physical discharge tooling for lithium batteries of claim 3, wherein: The telescopic mechanism (9) is a structure that the bolt is rotated to move downward and push the pressing plate (3).

5. The physical discharge tooling for lithium batteries of claim 4, wherein: The telescopic mechanism (9) is provided with a sensor for detecting the torque of the bolt and / or a sensor for detecting the distance between the pressing plate (3) and the battery.

6. The physical discharge tooling for lithium batteries of claim 5, wherein: The lower side of the guide column (7) is provided with a limiting block (10).

7. The physical discharge tooling for lithium batteries of any one of claims 1-6, wherein: Further comprising a tray (11), and the tray (11) is movably arranged on the workbench (2) and is used for placing the battery to be discharged.

8. The physical discharge tooling for lithium batteries of claim 7, wherein: The bottom of the tray (11) is provided with a guide wheel (12) on both sides, and the corresponding positions on both sides of the workbench (2) are provided with guide rails matched with the guide wheels (12).

9. The physical discharge tooling for lithium batteries of claim 8, wherein: The surface of the tray (11) is paved with a soft pad.

10. The physical discharge tooling for lithium batteries of any one of claims 1-6, wherein: The electric resistance (6) has a plurality of electric resistances arranged at intervals on the heat-conducting plate (5).

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