Battery pack stamping test device

Abstract

The utility model provides a battery pack stamping testing device, which relates to the technical field of battery testing and comprises a bottom plate for placing a battery, a collision cone and a hanging bracket, the hanging bracket is mounted on the bottom plate, the collision cone is hung on the hanging bracket through a rope, the rope is slidably mounted on the hanging bracket, and a limiting ring is mounted on the rope between the hanging bracket and the collision cone. And the distance between the limiting ring and the collision cone is adjustable. According to the utility model, the distance between the collision cone and the top end of the hanging bracket can be limited through the clamping of the limiting block and the rope, and the height at which the collision cone can rise is limited, so that the potential energy of the collision cone before falling is adjusted to cope with the collision test of different batteries; according to the protective cover disclosed by the utility model, the battery can be wrapped between the two protective covers, so that the damage caused by sparks generated after the battery is impacted is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, and in particular to a battery pack stamping test device. Background Art

[0002] The battery pack stamping test device is a device used to test the safety performance of the battery pack when punctured. The device is mainly used to evaluate whether the battery pack will cause fire or explosion in the event of accidental puncture, and to determine its parameters such as short circuit, current leakage and temperature rise.

[0003] Patent document CN216349470U discloses a battery pack testing device, including a base plate, a slide groove is provided on the base plate, a clamping mechanism, and the clamping mechanism includes a fixed seat and a clamping plate, the fixed seat is fixed to the base plate, a first groove is provided on the main plate of the fixed seat, a first motor is fixed to the fixed seat, a first rotating shaft is located in the first groove, one end of the first rotating shaft is fixedly connected to the output end of the first motor, and the other end is rotatably connected to the fixed seat, the clamping plate is movably sleeved on the first rotating shaft, and the first connecting block is slidably connected in the first groove and movably sleeved on the first rotating shaft through a thread. It has strong practicality, and the size of the clamping plate and the stamping block of the stamping test device can be adjusted, so that the test device can test battery packs of different sizes, which saves time and effort and reduces costs.

[0004] The above-mentioned device has certain shortcomings when in use. When performing the battery pack stamping and puncture test operation, the above-mentioned device cannot flexibly adjust the puncture height of the battery pack. At different heights, due to the different thicknesses of different battery packs, the anti-puncture resistance is also different. When testing battery packs of different thicknesses, it is impossible to perform corresponding height adjustments and change the buffering force to test the impact resistance of the battery. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a battery pack stamping test device, in which the initial height of the collision cone can be adjusted to be suitable for stamping tests of different battery packs.

[0006] Based on the technical problems existing in the background technology, the utility model proposes a battery pack stamping test device, including a base plate for placing batteries, a collision cone and a hanger, the hanger is installed on the base plate, the collision cone is suspended on the hanger by a rope, the rope is slidably installed on the hanger, a limit ring is installed on the rope between the hanger and the collision cone, and the distance between the limit ring and the collision cone is adjustable.

[0007] Preferably, the hanger is in an inverted U shape, a hole is provided on the upper cross bar of the hanger, the rope passes through the hole and is slidably installed on the hanger, and a pull ring is connected to the upper end of the rope.

[0008] Preferably, the length of the rope is greater than the height of the hanger.

[0009] Preferably, the limiting ring comprises two mutually hinged arc pieces, the two arc pieces form a circular ring, one arc piece is provided with an encircling ring, and the other arc piece is provided with a card, when spliced, the card is spliced ​​with the encircling ring and clamped on the rope.

[0010] Preferably, the ends of the two arc pieces away from the hinged end are provided with clamping heads or clamping grooves that are clamped to each other.

[0011] Preferably, a guide rail is provided on the bottom plate, and two clips approaching or moving away from each other are slidably mounted on the guide rail.

[0012] Preferably, protective covers are hinged on both sides of the bottom plate, and the protective covers can be spliced ​​with the hanger to form a cover body.

[0013] Preferably, the hanger is made of steel, and a magnetic sticker is installed on one side of the protective cover that is in contact with the hanger.

[0014] Compared with the prior art, the battery pack stamping test device proposed in the present invention adopts the above technical solution and achieves the following technical effects:

[0015] The utility model can limit the distance between the impact cone and the top of the hanger by clamping the limit block and the rope, and limit the height to which the impact cone can rise, so as to adjust the potential energy of the impact cone before falling to cope with the impact test of different batteries;

[0016] The protective cover of the utility model can wrap the battery between the two protective covers to prevent the battery from being damaged by sparks after being hit. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic diagram of the limit ring structure of the utility model.

[0019] In the figure: 1, bottom plate; 2, impact cone; 3, hanger; 4, rope; 5, limit ring; 31, hole; 51, arc piece; 52, surrounding ring; 53, card; 11, guide rail; 6, card strip; 7, protective cover; 71, magnetic tile. DETAILED DESCRIPTION

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] Example

[0023] Please refer to Figure 1-Figure 2 The utility model proposes a battery pack stamping test device, including a base plate 1 for placing batteries, a collision cone 2 and a hanger 3, the hanger 3 is installed on the base plate 1, the collision cone 2 is suspended on the hanger 3 by a rope 4, the collision cone 2 will have a certain height with the base plate 1, and will hit the battery on the base plate 1 after falling by free fall, the rope 4 is slidably installed on the hanger 3, the rope 4 is made of soft material, the rope 4 moves upward and will pull up the collision cone 2 on the hanger 3, so that the collision cone 2 has a certain height, the hanger 3 will ensure that the landing point of the collision cone 2 will not change, a limit ring 5 is installed on the rope 4 between the hanger 3 and the collision cone 2, and the distance between the limit ring 5 and the collision cone 2 is adjustable. The limiting ring 5 is fixed on the telescopic body. When the rope 4 is pulled upward, the limiting ring 5 will also move upward. When the limiting ring 5 conflicts with the hanger 3, the rope 4 stops pulling. At this time, the impact cone 2 is at a certain height and has potential energy. The position of the limiting ring 5 on the rope 4 is adjusted to change the distance between the limiting ring 5 on the rope 4 and the impact cone 2, so as to adjust the potential energy of the impact cone 2. At the same time, the descent of the rope 4 will not affect the free fall of the impact cone 2.

[0024] In a specific embodiment, refer to Figure 1 , Figure 2The hanger 3 is in an inverted U shape, and a hole 31 is provided on the upper crossbar of the hanger 3. The rope 4 passes through the hole 31 and is slidably installed on the hanger 3. A pull ring is connected to the upper end of the rope 4. The hole 31 on the crossbar on the hanger 3 is used to limit the horizontal movement of the rope 4 to prevent the horizontal position of the impact cone 2 from changing. The diameter of the rope 4 is smaller than the diameter of the hole 31. When the rope 4 falls, the hole 31 will not tightly clamp the rope 4, resulting in the impact cone 2 being unable to fall freely.

[0025] In a specific embodiment, refer to Figure 1 , Figure 2 , the length of rope 4 is greater than the height of hanger 3. The longer the rope 4 is, the different the height of the impact cone 2 will be, and the potential energy of the impact cone 2 can be adjusted. At the same time, the upper end of the rope 4 is connected to the pull ring to prevent the rope 4 from being too short and causing the impact cone 2 to be unable to contact the battery.

[0026] In a specific embodiment, refer to Figure 1 , Figure 2 The limiting ring 5 includes two mutually hinged arc pieces 51, the two arc pieces 51 form a circular ring, an encircling ring 52 is installed on one arc piece 51, and a card 53 is installed on the other arc piece 51. When spliced, the card 53 is spliced ​​with the encircling ring 52 and clamped on the rope 4. The limiting ring 5 can be clamped on the rope 4 in a variety of fixing methods, such as clamping with a clamp or a knot. In the utility model, it is achieved by a clamp method. The two arc pieces 51 can be opened and closed, so that the rope 4 is located in the circular ring formed by the two arc pieces 51. The shortest distance between the encircling ring 52 and the card 53 is less than the diameter of the rope 4. The two arc pieces 51 can clamp the rope 4 when closed, so that the limiting ring 5 will not slip on the rope 4.

[0027] In a specific embodiment, refer to Figure 1 , Figure 2 The ends of the two arc pieces 51 away from the hinged end are provided with mutually engaged clamping heads or clamping grooves. The clamping heads and the clamping grooves can be mutually engaged, so that the two arc pieces 51 can be butted together to form a ring.

[0028] In a specific embodiment, refer to Figure 1 , Figure 2 A guide rail 11 is provided on the bottom plate 1, and two card strips 6 that are close to or far away from each other are slidably installed on the guide rail 11; the guide rail 11 can be in the form of a slide column or a slide groove. In the utility model, a slide groove is adopted. An I-shaped slider is provided at the bottom end of the card strip 6, and the card strip 6 is installed with a bolt. When the card strip 6 slides to the corresponding position, the card strip 6 is limited and fixed by rotating the bolt, and the distance between the two card strips 6 is used to limit the battery.

[0029] In a specific embodiment, refer to Figure 1 , Figure 2, protective covers 7 are hinged on both sides of the bottom plate 1, and the protective covers 7 can be spliced ​​with the hanger 3 to form a cover body. In the utility model, the protective covers 7 are square bodies, and the two protective covers 7 and the hanger 3 form a sealed cover body to wrap the battery to prevent sparks from occurring after the battery is hit.

[0030] In a specific embodiment, refer to Figure 1 , Figure 2 The hanger 3 is made of steel, and a magnetic patch 71 is installed on one side of the protective cover 7 that is in contact with the hanger 3. When the protective cover 7 is formed into a cover body, it needs to be fixed to prevent it from falling off during the experiment. In the utility model, magnetic attraction is used to prevent it from falling off, and a fixing piece can also be used to fix it.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A battery pack stamping test device, characterized in that: The invention comprises a base plate (1) for placing batteries, a striker (2) and a hanger (3), wherein the hanger (3) is installed on the base plate (1), the striker (2) is suspended on the hanger (3) via a rope (4), the rope (4) is slidably installed on the hanger (3), a limit ring (5) is installed on the rope (4) between the hanger (3) and the striker (2), and the distance between the limit ring (5) and the striker (2) is adjustable.

2. The battery pack stamping test device according to claim 1, characterized in that: The hanger (3) is in an inverted U shape, a hole (31) is provided on the upper cross bar of the hanger (3), the rope (4) passes through the hole (31) and is slidably mounted on the hanger (3), and a pull ring is connected to the upper end of the rope (4).

3. The battery pack stamping test device according to claim 1, characterized in that: The length of the rope (4) is greater than the height of the hanger (3).

4. The battery pack stamping test device according to claim 1, characterized in that: The limiting ring (5) comprises two mutually hinged arc pieces (51), the two arc pieces (51) form a circular ring, one arc piece (51) is provided with an encircling ring (52), and the other arc piece (51) is provided with a card (53), when spliced, the card (53) is spliced ​​with the encircling ring (52) and clamped on the rope (4).

5. The battery pack stamping test device according to claim 4, characterized in that: The ends of the two arc pieces (51) away from the hinged end are provided with clamping heads or clamping grooves that are clamped to each other.

6. The battery pack stamping test device according to claim 1, characterized in that: The bottom plate (1) is provided with a guide rail (11), and two clips (6) are slidably mounted on the guide rail (11) and are arranged to move closer to or farther from each other.

7. The battery pack stamping test device according to claim 1, characterized in that: The two sides of the bottom plate (1) are hinged with protective covers (7), and the protective covers (7) can be spliced ​​with the hanger (3) to form a cover body.

8. The battery pack stamping test device according to claim 7, characterized in that: The hanger (3) is made of steel, and a magnetic sticker (71) is installed on one side of the protective cover (7) that is in contact with the hanger (3).

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