Universal safety test tool for soft package battery

Abstract

The utility model provides a soft package battery universal safety test tool, which comprises a test box, a bottom plate, a pressing plate, a first cylinder, a power supply clamp and a power supply cable, and is characterized in that the bottom plate is arranged in the test box and used for supporting a soft package battery; the pressing plate is arranged in the test box in a sliding manner and slides in the direction close to or away from the bottom plate; the first cylinder is arranged on the test box and is used for driving the pressing plate to slide; and heating modules are arranged in the bottom plate and the pressing plate. A to-be-tested soft package battery is placed into the top of a bottom plate from an opening in one side of a test box, then a first air cylinder is started, pressing and fixing treatment on the soft package batteries with different sizes is completed, a heating module in the bottom plate is charged through a power supply clamp after pressing, a heating module in a pressing plate is charged through a power supply cable, and the soft package batteries with different sizes are heated through the heating module. By controlling the temperature generated by the heating module, the thermal runaway test processing of the soft package battery is completed, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of soft-pack battery testing technology, and in particular to a universal safety testing fixture for soft-pack batteries. Background Technology

[0002] Pouch battery testing is a series of evaluation and verification processes performed on pouch lithium-ion batteries. Pouch batteries may face risks such as overcharging, short circuits, and external impacts during use. Testing assesses the battery's safety under extreme conditions, preventing accidents such as explosions or fires. It also helps identify and address potential safety hazards in pouch batteries.

[0003] Most commonly used pouch battery testing fixtures on the market can only be used with pouch batteries of a fixed size. Invention CN116413598A discloses a pouch battery testing device, including a housing and a thickness testing component. The housing contains a chamber, and the side wall of the housing has a first channel and a second channel communicating with the chamber. The chamber is filled with an insulating liquid, and the thickness testing component is placed inside the chamber and immersed in the insulating liquid. The thickness testing component includes a first test clamp and a second test clamp, with the test battery clamped between the first and second test clamps. However, the aforementioned testing device is still only applicable to one size of battery when performing thermal runaway testing on pouch batteries, resulting in low applicability. Therefore, this solution proposes a universal safety testing fixture for pouch batteries to address the above problem. Utility Model Content

[0004] In view of this, this utility model proposes a universal safety testing fixture for pouch batteries. By placing the pouch battery to be tested into the top of the base plate through an opening on one side of the test chamber, the first cylinder is activated to complete the pressing and fixing of pouch batteries of different sizes. After pressing, the heating module in the base plate is charged through the power supply clamp, and the heating module in the pressure plate is charged through the power supply cable. By controlling the temperature generated by the heating module, the thermal runaway test of the pouch battery is completed, which is convenient to use.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a universal safety testing fixture for soft-pack batteries, including a test box, a base plate, a pressure plate, a first cylinder, a power supply clamp, and a power supply cable, wherein...

[0006] The base plate, located inside the test chamber, is used to support the pouch battery;

[0007] The pressure plate is slidably disposed inside the test chamber and can slide towards or away from the base plate.

[0008] The first cylinder is mounted on the test box and is used to drive the pressure plate to slide.

[0009] Heating modules are provided inside both the base plate and the pressure plate. The power supply clamp is electrically connected to the heating module of the base plate, and the power supply cable is electrically connected to the heating module of the pressure plate.

[0010] Based on the above technical solutions, preferably, the bottom of the pressure plate is provided with a wire connection groove, and the wire connection groove is connected to one side of the pressure plate. The power supply cable is embedded inside the wire connection groove and connected to the pressure plate.

[0011] Based on the above technical solutions, a preferred embodiment also includes guide columns, wherein...

[0012] A guide post is disposed inside the test chamber, and a sliding through hole is provided on the pressure plate for the guide post to pass through.

[0013] Based on the above technical solution, preferably, the number of the first cylinders is two, and the two first cylinders are symmetrically distributed relative to the middle of the pressure plate.

[0014] Based on the above technical solutions, preferably, the method further includes a needle penetration testing component, which comprises a second cylinder and a test steel needle, wherein...

[0015] The second cylinder is mounted on the test box, and the test needle is fixedly connected to the output end of the second cylinder. The test needle moves toward or away from the base plate.

[0016] Based on the above technical solutions, preferably, the second cylinder is located at the top center of the test box, and the test steel needle moves in the height direction, and the pressure plate has an assembly hole for the test steel needle to pass through.

[0017] Based on the above technical solutions, preferably, the assembly also includes a guide cylinder, and the needle penetration test component further includes a guide toothed post, wherein...

[0018] A guide tooth post is sleeved on the outside of the test steel needle and is fixedly connected to the test steel needle;

[0019] A guide cylinder is disposed on the top wall of the inner cavity of the test chamber, and the guide toothed column passes through the inside of the guide cylinder and meshes with the guide cylinder.

[0020] Based on the above technical solutions, preferably, the test steel needle is a 5mm steel needle.

[0021] Based on the above technical solutions, a preferred option also includes an explosion-proof transparent door, wherein...

[0022] An explosion-proof transparent door is rotatably mounted on the test chamber and covers one side opening of the test chamber.

[0023] Based on the above technical solutions, preferably, the test box is provided with handles on both opposite sides.

[0024] The universal safety testing fixture for soft-pack batteries of this invention has the following advantages over the prior art:

[0025] (1) The soft-pack battery to be tested is placed into the top of the base plate through one side opening of the test box. Then, the first cylinder is activated. At this time, the first cylinder drives the pressure plate to move downward, and the pressure plate presses the soft-pack battery from above, thereby completing the pressing and fixing process for soft-pack batteries of different sizes. After pressing, the heating module in the base plate is charged through the power supply clamp, and the heating module in the pressure plate is charged through the power supply cable. By controlling the temperature generated by the heating module, the thermal runaway test of the soft-pack battery is completed, which is convenient to use.

[0026] (2) After the soft pack battery is pressed down by the pressure plate, the second cylinder can be started. At this time, the second cylinder drives the test steel needle to move downward. The test steel needle passes through the inside of the assembly hole and pierces into the geometric center of the soft pack battery, thereby completing the synchronous needle penetration test of the soft pack battery, which is convenient to use. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a perspective view of the universal safety testing fixture for soft-pack batteries of this utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the universal safety testing fixture for soft-pack batteries of this utility model;

[0030] Figure 3 This is a schematic diagram showing the connection between the pressure plate and the needle penetration test component of the universal safety test fixture for soft-pack batteries of this utility model.

[0031] Figure 4 This utility model provides a universal safety testing fixture for soft-pack batteries. Figure 3 The diagram shows the state of the structure after the pressure plate has been removed. Detailed Implementation

[0032] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0033] like Figures 1-4 As shown, the universal safety testing fixture for soft-pack batteries of this utility model is characterized by comprising a test chamber 1, a base plate 2, a pressure plate 3, a first cylinder 4, a power supply clamp 51, and a power supply cable 52. The base plate 2 is disposed inside the test chamber 1 to support the soft-pack battery. The pressure plate 3 is slidably disposed inside the test chamber 1 and slides towards or away from the base plate 2. The first cylinder 4 is disposed on the test chamber 1 to drive the pressure plate 3 to slide. Heating modules are disposed inside both the base plate 2 and the pressure plate 3. The power supply clamp 51 is electrically connected to the heating module of the base plate 2, and the power supply cable 52 is electrically connected to the heating module of the pressure plate 3.

[0034] In practice, the pouch battery to be tested is placed into the top of the base plate 2 through one side opening of the test chamber 1. Then, the first cylinder 4 is activated, which drives the pressure plate 3 to move downwards. The pressure plate 3 presses the pouch battery from above, thus completing the pressing and fixing process for pouch batteries of different sizes. After pressing, the heating module inside the base plate 2 is charged through the power supply clamp 51, and the heating module inside the pressure plate 3 is charged through the power supply cable 52. By controlling the temperature generated by the heating module, the thermal runaway test of the pouch battery is completed, making it convenient to use.

[0035] In a preferred embodiment, a wire connection groove 31 is provided at the bottom of the pressure plate 3, and the wire connection groove 31 is connected to one side of the pressure plate 3. The power supply cable 52 is embedded inside the wire connection groove 31 and connected to the pressure plate 3.

[0036] In practice, both ends of the power supply cable 52 embedded in the wire connection groove 31 are fixedly connected to the pressure plate 3. This design allows the power supply cable 52 to be stably located inside the wire connection groove 31, and the groove wall of the wire connection groove 31 can shield and protect the power supply cable 52.

[0037] In a preferred embodiment, a guide post 6 is also included, wherein the guide post 6 is disposed inside the test chamber 1, and the pressure plate 3 is provided with a sliding through hole 32 for the guide post 6 to pass through.

[0038] In practice, there are four guide posts 6, and the four guide posts 6 are located at the four corners of the pressure plate 3.

[0039] This design is intended to increase the stability of the sliding of pressure plate 3.

[0040] In a preferred embodiment, there are two first cylinders 4, and the two first cylinders 4 are symmetrically distributed with respect to the middle of the pressure plate 3.

[0041] In a preferred embodiment, the device also includes a needle penetration test assembly 7, which includes a second cylinder 71 and a test needle 72. The second cylinder 71 is disposed on the test chamber 1, and the test needle 72 is fixedly connected to the output end of the second cylinder 71. The test needle 72 moves toward or away from the base plate 2.

[0042] The second cylinder 71 is located at the top center of the test chamber 1, and the test steel needle 72 moves in the height direction. The pressure plate 3 has an assembly hole 33 for the test steel needle 72 to pass through.

[0043] In practice, after the soft-pack battery is pressed down and fixed by the pressure plate 3, the second cylinder 71 can be activated. At this time, the second cylinder 71 drives the test steel needle 72 to move downward. The test steel needle 72 passes through the inside of the assembly hole 33 and pierces the geometric center of the soft-pack battery, thereby completing the synchronous needle penetration test of the soft-pack battery, which is convenient to use.

[0044] In a preferred embodiment, the test assembly 7 also includes a guide cylinder 8 and a guide tooth 73. The guide tooth 73 is sleeved on the outside of the test steel needle 72 and is fixedly connected to the test steel needle 72. The guide cylinder 8 is located on the top wall of the inner cavity of the test chamber 1, and the guide tooth 73 passes through the inside of the guide cylinder 8 and meshes with the guide cylinder 8.

[0045] Specifically, during the adjustment of the second cylinder 71 driving the test steel needle 72 to move, the guide pin 73 moves synchronously along the guide cylinder 8. By setting the guide pin 73 to only move up and down under the action of the guide cylinder 8, the movement stability of the test steel needle 72 is increased.

[0046] As a preferred embodiment, the test needle 72 is a 5mm steel needle.

[0047] In a preferred embodiment, an explosion-proof transparent door 91 is also included, wherein the explosion-proof transparent door 91 is rotatably mounted on the test chamber 1 and covers one side opening of the test chamber 1.

[0048] Specifically, when conducting nail penetration and thermal runaway tests on pouch batteries, the explosion-proof transparent door 91 can be closed, and the status of the pouch battery can be observed from the outside, increasing test safety.

[0049] As a preferred embodiment, the test box 1 is provided with handles 92 on both opposite sides.

[0050] This design allows for convenient carrying of the test fixtures of this application via the handle 92.

[0051] The working principle of this utility model is described below:

[0052] The pouch battery to be tested is placed into the top of the base plate 2 through one side opening of the test chamber 1. Then, the first cylinder 4 is activated to clamp and fix the pouch batteries of different sizes. After clamping, the heating module in the base plate 2 is charged through the power supply clamp 51, and the heating module in the pressure plate 3 is charged through the power supply cable 52. By controlling the temperature generated by the heating module, the thermal runaway test of the pouch battery is completed. During the thermal runaway test, the second cylinder 71 is activated simultaneously. At this time, the second cylinder 71 drives the test needle 72 to move downward. The test needle 72 passes through the inside of the assembly hole 33 and penetrates the geometric center of the pouch battery, thereby completing the synchronous needle penetration test of the pouch battery.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A universal safety testing fixture for pouch batteries, characterized in that: The test box (1), base plate (2), pressure plate (3), first cylinder (4), power supply clamp (51), and power supply cable (52) are included. The base plate (2) is located inside the test box (1) and is used to support the soft-pack battery; The pressure plate (3) is slidably disposed inside the test chamber (1) and slides toward or away from the base plate (2); The first cylinder (4) is mounted on the test box (1) and is used to drive the pressure plate (3) to slide. Heating modules are provided inside both the base plate (2) and the pressure plate (3). The power supply clamp (51) is electrically connected to the heating module of the base plate (2), and the power supply cable (52) is electrically connected to the heating module of the pressure plate (3).

2. The universal safety testing fixture for pouch batteries as described in claim 1, characterized in that: The bottom of the pressure plate (3) is provided with a wire connection groove (31), and the wire connection groove (31) is connected to one side of the pressure plate (3). The power supply cable (52) is embedded in the wire connection groove (31) and connected to the pressure plate (3).

3. The universal safety testing fixture for pouch batteries as described in claim 1, characterized in that: It also includes guide posts (6), wherein, A guide post (6) is provided inside the test box (1), and a sliding through hole (32) is provided on the pressure plate (3) for the guide post (6) to pass through.

4. The universal safety testing fixture for pouch batteries as described in claim 1, characterized in that: There are two first cylinders (4), and the two first cylinders (4) are symmetrically distributed with respect to the middle of the pressure plate (3).

5. The universal safety testing fixture for pouch batteries as described in claim 1, characterized in that: It also includes a needle penetration test assembly (7), which comprises a second cylinder (71) and a test steel needle (72), wherein, The second cylinder (71) is mounted on the test box (1), and the test needle (72) is fixedly connected to the output end of the second cylinder (71). The test needle (72) moves toward or away from the base plate (2).

6. The universal safety testing fixture for pouch batteries as described in claim 5, characterized in that: The second cylinder (71) is located at the top center of the test box (1), and the test steel needle (72) moves in the height direction. The pressure plate (3) has an assembly hole (33) for the test steel needle (72) to pass through.

7. The universal safety testing fixture for pouch batteries as described in claim 6, characterized in that: It also includes a guide cylinder (8), and the needle penetration test assembly (7) further includes a guide toothed post (73), wherein, The guide pin (73) is sleeved on the outside of the test steel needle (72) and fixedly connected to the test steel needle (72); A guide cylinder (8) is disposed on the top wall of the inner cavity of the test chamber (1), and the guide tooth (73) passes through the inside of the guide cylinder (8), and the guide tooth (73) meshes with the guide cylinder (8).

8. The universal safety testing fixture for pouch batteries as described in claim 5, characterized in that: The test steel needle (72) is a 5mm steel needle.

9. The universal safety testing fixture for pouch batteries as described in claim 1, characterized in that: It also includes explosion-proof transparent doors (91), among which, An explosion-proof transparent door (91) is rotatably mounted on the test box (1) and covers one side opening of the test box (1).

10. The universal safety testing fixture for pouch batteries as described in claim 1, characterized in that: The test box (1) is provided with handles (92) on both sides.

Images