Intelligent discharger for waste square lithium battery

Abstract

This utility model discloses a smart discharger for waste square lithium batteries, including discharge electrodes, a smart discharger housing, a power supply, a cooling fan, a display, indicator lights, a control board, a servo motor, and cascaded discharge resistors. The discharge electrodes include two electrode guns and electrode handles. The smart discharger housing includes a shell and a cover plate; the cover plate is located at the rear of the shell and connected to it. The discharge electrodes are mounted on the smart discharger housing. The control board is connected to the smart discharger housing. The power supply is connected to the control board via wiring to provide power. The cooling fan is connected to the control board via connecting wires. The display and indicator lights are connected to the control board via wiring. The servo motor is connected to the control board via wiring, and its output shaft is connected to the slider of the cascaded discharge resistor via a connector. The cascaded discharge resistor is fixed to the smart discharger housing with fasteners. This utility model provides a safe, autonomous, and controllable discharge process and is applicable to the discharge of square lithium batteries of various sizes.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery recycling equipment technology, specifically to a smart discharger for waste square lithium batteries. Background Technology

[0002] Saltwater discharge, resistance discharge, and puncture discharge are the three main lithium battery discharge methods currently used in the lithium battery recycling industry. Saltwater discharge has a relatively large single discharge capacity, puncture discharge has a fast discharge speed, and resistance discharge can reduce discharge costs; all three have numerous implementation cases. Chinese patents CN119481386A (published as a rapid discharge device and method for waste lithium-ion batteries) uses a mixed sulfate or chloride solution to immerse lithium batteries for discharge; CN222720494U (published as a waste battery discharge device) uses solid conductive materials with different resistances to achieve stepped discharge; and CN222463028U (published as a battery puncture discharge device) uses the puncture discharge principle to discharge waste lithium batteries. However, current technical solutions all have unacceptable drawbacks. For example, the salt water discharge method is time-consuming, incomplete, and causes serious water pollution, and may even introduce impurity metal ions into the lithium battery. The puncture discharge method is prone to ignition, releases a large amount of toxic gas, and is very harmful. The resistance discharge method has the problem of unsuitable resistance values, which can lead to excessively high resistance temperatures and pose a risk of fire and explosion. Utility Model Content

[0003] The purpose of this invention is to provide an intelligent discharger for waste square lithium batteries, which improves the discharge efficiency of lithium batteries, ensures the safety and environmental protection of the discharge process, and is applicable to the discharge of square lithium batteries of various sizes, thereby reducing the discharge cost.

[0004] The technical solution adopted by this utility model is as follows:

[0005] A smart discharger for waste square lithium batteries, comprising:

[0006] The components include discharge electrodes, intelligent discharger housing, power supply, cooling fan, display, indicator lights, control board, servo motor, and cascaded discharge resistors.

[0007] The discharge electrode consists of two electrode guns and an electrode handle.

[0008] The housing of the intelligent discharger includes a housing and a cover plate; the cover plate is located at the rear of the housing and is connected to the housing.

[0009] The discharge electrodes are mounted on the housing of the intelligent discharger; the control board is connected to the housing of the intelligent discharger; the power supply is connected to the control board via a circuit to provide power; and the cooling fan is connected to the control board via a connecting wire.

[0010] The monitor and indicator lights are connected to the control board via wiring.

[0011] The servo motor is connected to the control board via wiring, and the output shaft of the servo motor is connected to the slider of the cascaded discharge resistor via a connector; the cascaded discharge resistor is fixed to the housing of the intelligent discharger by fasteners.

[0012] Furthermore, the discharge electrode is made of pure copper; the tip of the electrode gun adopts a drum-type flexible elastic connection mechanism, which, through cooperation with the discharge hole on the battery tab, makes the discharger firmly connected to the battery; the end of the electrode gun is assembled and connected to the electrode handle, which has mounting holes of different sizes.

[0013] Furthermore, the housing of the intelligent discharger is made of nylon and PP materials.

[0014] Furthermore, the pole handle extends laterally through the interior of the housing, with one end of the pole handle extending beyond the left side wall of the housing and the other end of the pole handle extending beyond the right side wall of the housing, and is fixedly connected; the first pole gun is installed at one end of the pole handle, and the second pole gun is installed at the other end of the pole handle.

[0015] Furthermore, the control board is fixed to the middle horizontal plate of the housing by fasteners; the end of the pole is connected to the control board via wiring.

[0016] Furthermore, the control board includes a smoke detection module, an infrared detection module, a photosensitizer module, a battery level detection module, a central control module, and a relay group.

[0017] Furthermore, the relay group uses high-response low-voltage relays to control the on / off state of the cooling fan and the cascaded discharge resistor, respectively.

[0018] Furthermore, the relay group includes a first relay and a second relay.

[0019] The first relay is connected to the cascaded discharge resistor via a circuit; the cooling fan is connected to the second relay via a connecting wire.

[0020] Furthermore, the cascaded discharge resistors are fixed to the base plate of the smart discharger housing using fasteners.

[0021] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0022] This utility model has a reasonable design, complete functions, and integrates multiple sensing and detection technologies and intelligent decision-making modules. The discharge process is safe, autonomous, and controllable, the discharge time can be adjusted autonomously, and the level of intelligence is high. It adopts reusable resistor discharge and is suitable for discharging square lithium batteries of various sizes, with obvious advantages in safety, cost, and environmental protection. Attached Figure Description

[0023] Figure 1 This is an overall structural diagram of the present invention.

[0024] Figure 2 This is an exploded structural diagram of this utility model.

[0025] Figure 3 This is a structural diagram of the control board of this utility model.

[0026] Figure 4 This is the discharge assembly drawing of this utility model. Detailed Implementation

[0027] The embodiments of this utility model will be further described below with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0028] To achieve the above objectives, this utility model proposes a smart discharger for waste square lithium batteries, used for the recycling and discharge of rolled and stacked lithium batteries with a square shape and an aluminum or steel casing. Figure 1 , Figure 2 As shown, it includes:

[0029] 3. Discharge electrode, intelligent discharger housing, power supply, cooling fan, display, indicator light, control board, servo motor, and cascaded discharge resistor.

[0030] The discharge electrode adopts an assembled assembly made of all-copper material, including two electrode guns 1-1 and an electrode handle 1-2. The head of the electrode gun 1-1 adopts a drum-type flexible elastic connection mechanism, which fits tightly with the discharge hole on the battery tab to ensure a firm connection between the discharger and the battery and a smooth discharge process. The tail of the electrode gun 1-1 is assembled and connected to the electrode handle 1-2. The mounting holes of different sizes on the electrode handle 1-2 can be adjusted to meet the discharge requirements of different types of lithium batteries by adjusting the mounting position of the electrode gun 1-1 on the electrode handle 1-2.

[0031] The housing of the intelligent discharger is made of nylon and PP material. These materials are insulating and relatively lightweight compared to metal. The housing includes a shell 2-1 and a cover plate 2-2. The cover plate 2-2 is located behind the shell 2-1 and is connected to the shell 2-1.

[0032] The pole handle 1-2 extends laterally through the interior of the housing 2-1. One end of the pole handle 1-2 extends beyond the left side wall of the housing 2-1, and the other end of the pole handle 1-2 extends beyond the right side wall of the housing 2-1 and is fixedly connected. The first pole gun is installed at one end of the pole handle 1-2, and the second pole gun is installed at the other end of the pole handle 1-2.

[0033] The control board 7 is fixed to the middle horizontal plate of the housing 2-1 by fasteners, and the ends of the pole handles 1-2 are connected to the control board 7 via wiring. Figure 3As shown, the control board 7 includes a smoke detection module 7-1, an infrared detection module 7-2, a photosensitizer module 7-3, a battery level detection module 7-4, a central control module 7-5, and a relay group 7-6.

[0034] The relay group 7-6 uses high-response low-voltage relays, including the first relay 7-6-1 and the second relay 7-6-2; the first relay 7-6-1 is connected to the cascaded discharge resistor 9 through a line to control the on and off of the cascaded discharge resistor 9; the second relay 7-6-2 is connected to the cooling fan 4 through a connecting wire to control the on and off of the cooling fan 4.

[0035] The power supply 3 is connected to the control board 7 via a line to provide power; the cooling fan 4 is connected to the control board 7 via a connecting cable.

[0036] Display 5 and indicator lights 6 are connected to control board 7 via wiring. Display 5 displays parameters such as battery remaining value, discharge resistance value, temperature value, brightness value, smoke level, estimated discharge time, operating status, and safety status. Indicator lights 6 include a power indicator light, a running indicator light, and an alarm indicator light. The power indicator light displays the power status of the intelligent discharger, the running indicator light displays the operating status of the intelligent discharger, and the alarm indicator light displays the safety status of the intelligent discharger.

[0037] Servo motor 8 is connected to control board 7 via wiring, and the output shaft of servo motor 8 is connected to the slider of cascaded discharge resistor 9 via connector; cascaded discharge resistor 9 is fixed to the base plate of housing 2-1 of intelligent discharger housing by fasteners.

[0038] The smoke detection module 7-1 detects changes in smoke concentration at the cascaded discharge resistor 9 and transmits the detected smoke concentration value to the central control module 7-5. The infrared detection module 7-2 detects temperature changes at the cascaded discharge resistor 9 and transmits the detected temperature value to the central control module 7-5. The photosensitive detection module 7-3 detects changes in brightness at the cascaded discharge resistor 9 and transmits the detected temperature value to the central control module 7-5. The battery remaining capacity detection module 7-4 uses a high-precision lithium battery charge / discharge management chip. By reading the acquisition signal transmitted from the discharge electrodes, it automatically identifies and detects the battery's remaining capacity and internal resistance, and transmits the detected temperature value to the central control module 7-5. The central control module 7-5 uses a high-efficiency, low-power microcontroller as its core. By integrating various detection signals, it determines the discharge parameters and operating status of the discharge process, controls the discharge process, and displays the discharge process parameters through a display and indicator lights.

[0039] When using, such as Figure 4 As shown:

[0040] S1. First, fit the electrode gun 1-1 tightly with the discharge hole on the battery tab.

[0041] S2. After the waste square lithium battery intelligent discharger is assembled with the battery, the waste square lithium battery intelligent discharger is initialized and begins to work normally.

[0042] S3, Battery Balance Detection Module 7-4 detects the internal parameters of the lithium battery, determines and evaluates the remaining battery balance, and sends the results to the central control module 7-5.

[0043] S4 and the central control module 7-5 integrate various detection signals and calculate in real time the optimal cascaded discharge resistor 9 value required for the lithium battery to be fully discharged within a specified time (e.g., 2 hours) under the current state, using a 1C discharge rate.

[0044] S5. Based on the resistance value of the optimal cascaded discharge resistor 9 in step S4, calculate the angle that the servo motor needs to rotate for the corresponding resistance change, and adjust the resistance value of the cascaded discharge resistor 9 by adjusting the servo motor.

[0045] S6. During the discharge process, the display 5 shows the resistance value of the cascaded discharge resistor 9, the remaining battery level, the internal temperature parameters of the discharger, the internal smoke parameters of the discharger, the internal brightness parameters of the discharger, and the internal alarm information of the discharger. The power indicator, operation indicator, and alarm indicator of the indicator light 6 are lit.

[0046] S7. As the discharge proceeds, the current state of the cascaded discharge resistor 9 is detected by the smoke detection module 7-1, infrared detection module 7-2, and photosensitive detection module 7-3. Based on the detection results, the safety status of the cascaded discharge resistor 9 is comprehensively judged and safety adjustments are made. If a safety hazard or safety problem occurs during the discharge of the lithium battery, the automatic protection mechanism is activated.

[0047] S8. The automatic protection mechanism is activated under the following conditions: When the temperature of the cascaded discharge resistor 9 is detected to be higher than the safe temperature T1, and there is no smoke or open flame, the central control module 7-5 adjusts the resistance value. At the same time, the cooling fan 4 starts to cool the cascaded discharge resistor 9, the running status indicator light turns red, and the alarm indicator light turns on. When the temperature of the cascaded discharge resistor 9 is detected to be higher than the limit safe temperature T2, there is a risk of combustion. The central control module 7-5 disconnects the relay group 7-6 of the cascaded discharge resistor 9, interrupts the discharge process, and actively suppresses combustion. At this time, the running status indicator light turns red, and the alarm indicator light turns on. If the active combustion suppression measures of the resistor fail and an open flame occurs, the smoke detection module 7-1 detects an increase in smoke concentration, and the photosensitive detection module 7-3 detects an increase in brightness inside the discharger. In this case, external nitrogen gas is required for fire extinguishing.

[0048] S9. Once the discharge is complete, simply remove the discharger from the lithium battery; it can then be used for further cycle discharge processes.

[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A smart discharger for waste square lithium batteries, characterized in that, include: The components include discharge electrodes, intelligent discharger housing, power supply (3), cooling fan (4), display (5), indicator light (6), control board (7), servo motor (8), and cascaded discharge resistor (9). The discharge electrode includes two electrode guns (1-1) and an electrode shank (1-2); The housing of the intelligent discharger includes a shell (2-1) and a cover plate (2-2); The cover plate (2-2) is located behind the housing (2-1) and is connected to the housing (2-1); The discharge electrodes are set on the housing of the intelligent discharger; the control board (7) is connected to the housing of the intelligent discharger; the working power supply (3) is connected to the control board (7) through a line to provide power; the cooling fan (4) is connected to the control board (7) through a connecting wire. The display (5) and indicator light (6) are respectively connected to the control board (7) via wiring; The servo motor (8) is connected to the control board (7) via a circuit. The output shaft of the servo motor (8) is connected to the slider of the cascaded discharge resistor (9) via a connector. The cascaded discharge resistor (9) is fixed to the housing of the smart discharger by fasteners.

2. The intelligent discharger for waste square lithium batteries according to claim 1, characterized in that, The discharge electrode is made of pure copper; the head of the electrode gun (1-1) adopts a drum-type flexible elastic connection mechanism, which, through cooperation with the discharge hole on the battery tab, makes the discharger firmly connected to the battery; the end of the electrode gun (1-1) is assembled and connected to the electrode handle (1-2), which has mounting holes of different sizes on the electrode handle (1-2).

3. The intelligent discharger for waste square lithium batteries according to claim 1, characterized in that, The casing of the intelligent discharger is made of nylon and PP materials.

4. The intelligent discharger for waste square lithium batteries according to claim 1, characterized in that, The pole handle (1-2) extends laterally through the interior of the housing (2-1). One end of the pole handle (1-2) extends beyond the left side wall of the housing (2-1), and the other end of the pole handle (1-2) extends beyond the right side wall of the housing (2-1) and is fixedly connected. The first pole gun is installed at one end of the pole handle (1-2), and the second pole gun is installed at the other end of the pole handle (1-2).

5. The intelligent discharger for waste square lithium batteries according to claim 1, characterized in that, The control board (7) is fixed to the middle horizontal plate of the housing (2-1) by fasteners; the end of the pole handle (1-2) is connected to the control board (7) by a circuit.

6. The intelligent discharger for waste square lithium batteries according to claim 1, characterized in that, The control board (7) includes a smoke detection module (7-1), an infrared detection module (7-2), a photosensitizer module (7-3), a battery balance detection module (7-4), a central control module (7-5), and a relay group (7-6).

7. The intelligent discharger for waste square lithium batteries according to claim 6, characterized in that, The relay group (7-6) uses high-response low-voltage relays to control the on / off of the cooling fan (4) and the cascaded discharge resistor (9), respectively.

8. The intelligent discharger for waste square lithium batteries according to claim 7, characterized in that, The relay group (7-6) includes the first relay (7-6-1) and the second relay (7-6-2); The first relay (7-6-1) is connected to the cascaded discharge resistor (9) via a line; the cooling fan (4) is connected to the second relay (7-6-2) via a connecting wire.

9. The intelligent discharger for waste square lithium batteries according to claim 1, characterized in that, The cascaded discharge resistor (9) is fixed to the base plate of the housing (2-1) of the smart discharger by fasteners.

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