A device for safe discharge processing of a battery after abuse test

Abstract

The utility model discloses a kind of for the device of battery safety discharge processing after abuse test, battery is connected with resistance circuit by electric wire, the device includes: the container groove filled with fluid medium, support plate is set in the container groove;The support plate side is rotatably connected with the container groove by pivot, in free state, the support plate can be rotated to with the container groove lateral wall parallel;And for the rope for tensioning the support plate keeps level, a part of the rope is placed outside the container groove and end position is fixed, to release the support plate in the position of overhanging section position cutting the rope and battery is slid into water, the utility model realizes the purpose of low cost, high efficiency safety discharge, and meets the battery amplification use demand after large quantities of abuse test.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery safety testing technology, and in particular to a device for safe discharge treatment of batteries after abuse tests. Background Technology

[0002] With the large-scale application of power batteries in new energy vehicles and energy storage systems, their safety verification has become a core aspect of industry regulation and product access. According to relevant domestic and international standards, batteries that have undergone abuse tests such as nail penetration, compression, overcharging, external short circuits, and thermal runaway still require subsequent temporary storage, disassembly, or recycling. Because these tests may cause damage to the battery's internal structure, decrease interface stability, and cause minor internal short circuits, the batteries often retain a relatively high state of charge. If they are directly stored or transported without being fully discharged, the residual energy can easily cause reignition, thermal runaway, or even explosion due to mechanical collisions, contact with foreign metal objects, or fluctuations in ambient temperature, seriously threatening the safety of personnel, equipment, and the environment. Therefore, discharging the battery to a safe charge range after testing has become an indispensable safety transition step between the testing process and subsequent handling.

[0003] In real-world testing scenarios, a large number of batteries are subjected to abuse tests, and only complete discharge is required, without the need for capacity calibration, operational condition simulation, or data traceability. Continuing to use high-precision charging and discharging equipment not only wastes resources but also significantly increases operation, maintenance, and energy costs. Therefore, there is an urgent need for a simple, low-cost, and easy-to-operate discharge method that can safely and efficiently discharge batches of batteries while meeting the requirements of low-current, low-stress discharge.

[0004] The resistive discharge method releases electrical energy through passive components via heat dissipation, eliminating the need for power conversion and energy feedback units. This results in a simple system topology and high reliability. By adjusting the resistance value, it can flexibly adapt to batteries of different capacities and voltages, achieving near-constant current discharge and avoiding large current surges. Furthermore, the discharge process requires no complex control strategies, significantly reducing equipment procurement and operating costs and improving the practicality and economy of batch processing. Therefore, the resistive low-current discharge method is an effective technical approach for the safe handling of batteries after abuse testing. A crucial issue that needs to be addressed by those skilled in the art is the handling of cells in the event of accidental fire. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of the existing technology and provide a device for safe discharge treatment of batteries after abuse tests, which can achieve low-cost and high-efficiency safe discharge.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a device for safe discharge treatment of batteries after abuse tests. The battery is connected to a resistor circuit via wires. The device includes:

[0008] A container tank containing a fluid medium, and a support plate disposed within the container tank;

[0009] One side of the support plate is rotatably connected to the container tank via a pivot. In its free state, the support plate can rotate to be parallel to the side wall of the container tank; and

[0010] A rope is used to keep the support plate level. A portion of the rope is placed outside the container trough and its end is fixed so that the rope can be cut at the suspended section to release the support plate and allow the battery to slide into the water.

[0011] Furthermore, the rope is fixedly connected to the outer wall of the container tank, and a suspended section is formed between the rope and the outer wall of the container tank.

[0012] Furthermore, a first bracket is fixed to the outer wall of the container tank for supporting the rope, so that the rope is away from the outer wall of the container tank, forming a suspended section of the rope.

[0013] Furthermore, the first support includes a support plate and a support arm fixed to the support plate and extending obliquely upward toward the direction away from the outer wall of the container tank, with the end of the rope fixed to the top of the support arm, thus suspending the rope.

[0014] Furthermore, a fixed pulley is installed at the top of the container trough for contact with the rope.

[0015] Furthermore, a second bracket is fixed to the top of the container tank to support the resistor.

[0016] Furthermore, the second bracket includes an upwardly extending vertical plate and a second support plate fixedly connected to the top of the vertical plate, through which the resistor is cantilevered.

[0017] Furthermore, the top of the container slot has an opening for inserting a battery.

[0018] Furthermore, the depth of the fluid medium within the container tank is greater than the longest dimension of the battery's outer contour.

[0019] Furthermore, the fluid medium in the container tank is water.

[0020] In the above technical solution, the device provided by this utility model for safe discharge treatment of batteries after abuse tests has the following advantages:

[0021] Firstly, the device uses a battery connected to a resistive circuit via wires, employing a resistive low-current discharge method. The device's container tank is filled with water, and a support plate is rotatably connected within the tank. The support plate is kept horizontal by ropes, thus supporting the battery. The battery is placed above the water and close to the water surface. When the battery experiences thermal runaway, the ropes exposed outside the container tank are cut directly, causing the support plate to become unstable and the battery to slide into the water, preventing further thermal runaway. This achieves the goal of low-cost, high-efficiency, and safe discharge, and also meets the requirements for large-scale battery use after mass abuse testing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the device for safe discharge treatment of batteries after abuse tests disclosed in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Container tank; 2. Water; 3. Shaft; 4. Rope; 5. Fixed pulley; 6. Support plate; 7. Wire; 8. Resistor; 9. Battery; 10. Support arm; 11. Second tray. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] See Figure 1 As shown;

[0028] The utility model discloses a device for safe discharge treatment of batteries after abuse tests. The battery 9, which has safety hazards after abuse tests, is connected to the circuit of the resistor 8 via the wire 7.

[0029] The device includes: a container tank 1, a support plate 6, and a rope 4;

[0030] The container tank 1 is used to hold liquid medium, specifically water 2. The top of the container tank 1 has an opening that allows the battery 9 to be inserted. The resistor 8 is placed on the top of the container tank 1 on one side of the opening. A support plate 6 is provided in the middle of the inner cavity of the container tank 1.

[0031] One side of the support plate 6 is rotatably connected to the inner wall of the container tank 1 via a rotating shaft 3, so that when the support plate 6 rotates around the rotating shaft 3, it can rotate by its own weight to be parallel to the inner wall rotatably connected to the container tank 1.

[0032] One end of the rope 4 is connected to the side of the support plate 6 away from the rotating shaft 3, and the other end of the rope 4 is fixed at the outer end of the container tank 1. Preferably, the rope 4 is connected to the outer wall of the container tank. The support plate 6 is pulled parallel to the bottom wall of the container tank 1 by the rope 4 so that the support plate 6 can horizontally support the battery 9 that has safety hazards after the abuse test.

[0033] In use, the device slowly discharges the battery 9 through an external resistor 8. At the same time, if thermal runaway occurs, the rope is cut at the suspended section of the rope 4, the support plate 6 becomes unstable, and the battery 9 can quickly slide into the water 2 to prevent thermal runaway from occurring.

[0034] Preferably, the rope 4 is fixedly connected to the outer wall of the container tank 1, and a suspended section is formed between the rope 4 and the outer wall of the container tank 1 for cutting;

[0035] A first support is fixed to the outer wall of the container tank 1 for mounting the rope 4 so that the rope 4 is away from the outer wall of the container tank 1, forming a suspended section of the rope 4. The rope is cut in the suspended section when in use.

[0036] Specifically, the first support includes a support plate, one side of which is fixed to the outer wall of the container tank 1, and the other side is fixed to a support arm 10. The support arm 10 extends upward at an angle away from the outer wall of the container tank 1. The end of the rope 4 is fixed to the top of the support arm 10, thereby suspending the rope 4. A fixed pulley 5 is installed at the opening of the container tank 1. The other end of the rope 4 passes through the fixed pulley 5 and is connected to the support plate 6. When discharging, the battery 9 undergoes thermal runaway. The operator can cut the rope in the suspended section outside the container tank 1, effectively protecting the personal safety of the operator.

[0037] Preferably, a second support is fixed to the top of the container tank 1 for supporting the resistor 8. Specifically, the second support includes an upwardly extending vertical plate, and a second support plate 11 is fixed to the top of the vertical plate. The second support plate 11 extends to the top of the opening of the container tank 1, thereby supporting the resistor 8.

[0038] Preferably, the depth of the water 2 in the container 1 is greater than the longest dimension of the outer contour of the battery 9.

[0039] In the above technical solution, the device for safe discharge treatment of batteries after abuse tests provided by this utility model works on the following principle:

[0040] The battery that has been found to have safety hazards after abuse testing is placed on the support plate 6, and the positive and negative terminals of the battery are connected to the resistor 8 through the wire 7.

[0041] The resistance value of the connecting resistor 8 can be selected according to the battery discharge current requirements, and the maximum discharge current of the battery can be controlled by the resistance value.

[0042] Place water 2 into container 1. The depth of water 2 should exceed the longest dimension of the battery so that the battery can be completely covered by water 2 no matter the angle of drop.

[0043] When the battery is observed to start smoking and catching fire, the rope 4 connecting the support plate 6 can be quickly cut to flip the support plate 6 and cause the battery to slide into the water 2, preventing further thermal runaway of the battery.

[0044] This device for the safe discharge treatment of batteries after abuse testing provides a low-cost and economical way to discharge batteries with safety hazards after abuse testing. By controlling the current through resistance, the battery is slowly discharged with a very small current. When the battery overheats and runs away, it can be quickly and safely dropped into water 2 to prevent the thermal runaway from spreading. It is suitable for large-scale processing of batteries after abuse testing.

[0045] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An apparatus for safe discharge treatment of a battery after an abuse test, wherein the battery (9) is connected to a resistor (8) circuit via wires, characterized in that, The device includes: A container tank (1) containing a fluid medium and a support plate (6) disposed in the container tank (1); One side of the support plate (6) is rotatably connected to the container tank (1) via a pivot (3). In its free state, the support plate (6) can rotate to be parallel to the side wall of the container tank (1); and A rope (4) is used to tighten the support plate (6) and keep it horizontal. A portion of the rope (4) is placed outside the container trough (1) and the end is fixed so that the rope (4) can be cut at the suspended section to release the support plate (6) and slide the battery (9) into the water.

2. The apparatus for safe discharge treatment of batteries after abuse tests according to claim 1, characterized in that: The rope (4) is fixedly connected to the outer wall of the container (1), and the suspended section is formed between the rope (4) and the outer wall of the container (1).

3. The apparatus for safe discharge treatment of batteries after abuse tests according to claim 2, characterized in that: A first support is fixed to the outer wall of the container tank (1) for mounting the rope (4) so ​​that the rope (4) is away from the outer wall of the container tank (1) and forms a suspended section of the rope (4).

4. The apparatus for safe discharge treatment of batteries after abuse testing according to claim 3, characterized in that: The first support includes a support plate and a support arm (10) fixed on the support plate and extending upward at an angle toward the outer side wall of the container (1). The end of the rope (4) is fixed to the top of the support arm (10) and the rope (4) is suspended.

5. An apparatus for safe discharge treatment of batteries after abuse testing according to claim 1 or 4, characterized in that: A fixed pulley (5) is installed at the top of the container trough (1) for contacting the rope (4).

6. The apparatus for safe discharge treatment of batteries after abuse testing according to claim 1, characterized in that: A second support is fixed to the top of the container (1) to support the resistor (8).

7. The apparatus for safe discharge treatment of batteries after abuse testing according to claim 6, characterized in that: The second support includes an upwardly extending upright plate and a second support plate (11) fixedly connected to the top of the upright plate, through which the resistor (8) is cantilevered.

8. The apparatus for safe discharge treatment of batteries after abuse testing according to claim 1, characterized in that: The container slot has an opening at the top for inserting a battery (9).

9. The apparatus for safe discharge treatment of batteries after abuse testing according to claim 1, characterized in that: The depth of the fluid medium in the container (1) is greater than the longest dimension of the outer contour of the battery (9).

10. An apparatus for safe discharge treatment of a battery after an abuse test according to claim 1 or 9, characterized in that: The fluid medium in the container tank (1) is water (2).

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