Battery cell directional eruption tool

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cell directional eruption tool which is characterized by comprising a bottom plate, a clamping mechanism and a supporting plugging piece, the clamping mechanism comprises a first clamping mechanism and a second clamping mechanism which are arranged on the bottom plate and correspond to each other, and the first clamping mechanism and the second clamping mechanism are used for clamping a battery cell to be clamped; the supporting plugging piece comprises a first plugging clamping block and a plurality of second plugging clamping blocks, and the first plugging clamping block and the second plugging clamping blocks are clamped between the first clamping mechanism and the second clamping mechanism; the first plugging clamping block is arranged on the bottom plate and used for abutting against the bottom of the battery cell to be clamped, the multiple second plugging clamping blocks are used for being arranged at the top of the battery cell to be clamped at intervals, and directional spraying openings are formed among the second plugging clamping blocks. According to the utility model, the practicability of the thermal failure test of the battery cell is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery core directional spraying tool. Background Art

[0002] In the battery cell failure test, the battery cell is clamped by two steel plates and bolts for test verification. The battery cell is actively heated by a heating plate to cause thermal runaway and heat spread, and then the failure of the adjacent battery cell is observed. However, when the battery cell is clamped by two steel plates for the battery cell failure test, the four sides of the battery cell are the direction of airflow after thermal failure, which makes the direction of airflow uncertain in the test, affecting the accuracy of the battery cell thermal failure test results. It is impossible to accurately simulate the failure modes and consequences that the battery cell may encounter under real working conditions, limiting the practicality and accuracy of the battery cell thermal failure test. Utility Model Content

[0003] The main purpose of the utility model is to provide a directional spraying tool for battery cells, aiming to solve the technical problem that the spraying direction of airflow is uncertain in the thermal failure test of battery cells, resulting in inaccurate test results.

[0004] In order to achieve the above-mentioned utility model purpose, the utility model proposes a battery core directional spraying tool, including a bottom plate, a clamping mechanism, and a supporting and blocking member;

[0005] The clamping mechanism comprises a first clamping mechanism and a second clamping mechanism which are arranged on the bottom plate and correspond to each other, and the first clamping mechanism and the second clamping mechanism are used to clamp the battery cell to be clamped;

[0006] The supporting and blocking member comprises a first blocking clamp block and a plurality of second blocking clamp blocks, wherein the first blocking clamp block and the plurality of second blocking clamp blocks are clamped between the first clamping mechanism and the second clamping mechanism;

[0007] The first blocking clamp is arranged on the bottom plate to abut the bottom of the battery cell to be clamped, and a plurality of the second blocking clamps are arranged at intervals on the top of the battery cell to be clamped, and directional ejection ports are formed between the second blocking clamps.

[0008] Furthermore, a first clamping hole is arranged on the first clamping mechanism, a second clamping hole corresponding to the first clamping hole is arranged on the second clamping mechanism, a first through hole is arranged on the second sealing clamp block, and the first through hole corresponds to the first clamping hole and the second clamping hole respectively, and the second sealing clamp block is connected to the first clamping mechanism and the second clamping mechanism respectively by a first bolt which penetrates the first clamping hole, the first through hole and the second clamping hole in sequence.

[0009] Furthermore, the first through hole is in a racetrack shape.

[0010] Furthermore, a third clamping hole is provided on the first clamping mechanism, a fourth clamping hole corresponding to the third clamping hole is provided on the second clamping mechanism, a second through hole is provided on the first sealing clamp block, and the second through hole corresponds to the third clamping hole and the fourth clamping hole respectively, and the first sealing clamp block is connected to the first clamping mechanism and the second clamping mechanism respectively by a second bolt that penetrates the third clamping hole, the second through hole and the fourth clamping hole in sequence.

[0011] Furthermore, a plurality of third through holes and a plurality of fourth through holes are provided on the base plate, and the third through holes correspond to the fourth through holes, and the third through holes and / or the fourth through holes extend along opposite sides of the base plate, and the first clamping mechanism is connected to the base plate by passing the third through holes through a first screw, and the second clamping mechanism is connected to the base plate by passing the fourth through holes through a second screw.

[0012] Further, the third through hole and / or the fourth through hole is in a racetrack shape.

[0013] Further, the thickness of the first blocking clamp block and the second blocking clamp block are respectively the same as the thickness of the battery cell to be clamped.

[0014] Furthermore, a support platform is provided in the third through hole and the fourth through hole. The support platform is located at an end of the bottom plate away from the battery cell to be clamped and extends along the entire circumference direction of the third through hole and the fourth through hole respectively.

[0015] Furthermore, the clamping mechanism further comprises a clamping plate arranged on the bottom plate, and the size of the clamping plate is greater than or equal to the size of the battery cell to be clamped.

[0016] Furthermore, the clamping mechanism further comprises a reinforcing plate, and the reinforcing plate is fixedly connected to a side of the clamping plate away from the battery cell to be clamped.

[0017] Furthermore, the clamping plate is a transparent acrylic plastic plate.

[0018] Furthermore, the reinforcement plate is a U-shaped steel plate.

[0019] Beneficial effects:

[0020] The utility model controls the airflow to spray in a specific direction during the thermal failure test of the battery cell by supporting the sealing member, thereby reducing the influence of uncontrollable factors during the test and making the test conditions more uniform each time, thereby improving the repeatability and reliability of the test results and making the test results more accurate. In addition, during the actual use of the battery cell, the failure usually sprays in a specific direction. By supporting the sealing member to control the spraying direction, the actual failure situation of the battery cell in the battery pack or equipment can be more accurately simulated, thereby obtaining more realistic test data, effectively improving the practicability of the thermal failure test of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a battery cell directional spraying tooling according to an embodiment of the utility model;

[0022] Figure 2 For an embodiment of the utility model Figure 1 Explosion diagram of

[0023] Figure 3 This is a schematic diagram of the bottom plate structure of an embodiment of the utility model.

[0024] in:

[0025] 1. Bottom plate; 2. Clamping mechanism; 3. Battery cell to be clamped; 4. Support and blocking member; 5. Third through hole; 6. Fourth through hole; 7. Support platform; 8. First screw; 9. Second screw;

[0026] 20. First clamping mechanism; 21. Second clamping mechanism; 22. Clamping plate; 23. Reinforcement plate; 24. First clamping hole; 25. Second clamping hole; 26. Third clamping hole; 27. Fourth clamping hole;

[0027] 40. First blocking clamp; 41. Second blocking clamp; 42. First through hole; 43. Second through hole; 44. First bolt; 45. Second bolt;

[0028] 70. First supporting platform; 71. Second supporting platform.

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, 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. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] Reference Figure 1-Figure 2 , this embodiment provides a battery core directional spraying tool, including a bottom plate 1, a clamping mechanism 2, and a supporting and blocking member 4;

[0035] The clamping mechanism 2 includes a first clamping mechanism 20 and a second clamping mechanism 21 which are arranged on the bottom plate 1 and correspond to each other, and the first clamping mechanism 20 and the second clamping mechanism 21 are used to clamp the battery cell 3 to be clamped;

[0036] The supporting and blocking member 4 includes a first blocking clamp block 40 and a plurality of second blocking clamp blocks 41, and the first blocking clamp block 40 and the plurality of second blocking clamp blocks 41 are clamped between the first clamping mechanism 20 and the second clamping mechanism 21;

[0037] The first blocking clamp 40 is arranged on the bottom plate 1 to abut the bottom of the battery cell 3 to be clamped, and a plurality of the second blocking clamps 41 are arranged at intervals on the top of the battery cell 3 to be clamped, and directional ejection ports are formed between the second blocking clamps 41.

[0038] In the above embodiment, the battery cell directional spraying tooling includes a base plate 1, a clamping mechanism 2, and a supporting sealing member 4, wherein the clamping mechanism 2 is arranged on the base plate 1, the clamping mechanism 2 includes a first clamping mechanism 20 and a second clamping mechanism 21, and the first clamping mechanism 20 and the second clamping mechanism 21 are arranged corresponding to each other, and when the first clamping mechanism 20 and the second clamping mechanism 21 are installed on the base plate 1, a designated interval with a certain spacing is formed between the first clamping mechanism 20 and the second clamping mechanism 21, which is used to place the battery cell 3 to be clamped in the designated interval to detect the failure state of the battery cell 3 to be clamped, so that the battery cell 3 to be clamped can be clamped by the first clamping mechanism 20 and the second clamping mechanism 21; the supporting sealing member 4 includes a first blocking clamp block 40 and a plurality of second blocking clamp blocks 41, wherein the first blocking clamp block 40 and the plurality of second blocking clamp blocks 41 are arranged in the designated interval, the first blocking clamp block 40 is respectively connected to the first clamping mechanism 20 and the second clamping mechanism 21, and the second blocking clamp block 4 1 is connected to the first clamping mechanism 20 and the second clamping mechanism 21 respectively. When the battery cell 3 to be clamped is placed at the specified interval, the first blocking clamp 40 is located at one end of the battery cell 3 to be clamped close to the bottom plate 1. The first blocking clamp 40 is arranged between the bottom plate 1 and the battery cell 3 to be clamped, so that the first blocking clamp 40 is arranged on the bottom plate 1 and abuts against the bottom of the battery cell 3 to be clamped, and is used to block the bottom of the battery cell 3 to be clamped. The second blocking clamp 41 is arranged at the same intervals and uniformly spaced at the same intervals. The battery cell 3 is away from one end of the first blocking clamp 40, and the first blocking clamp 40 and the second blocking clamp 41 are arranged opposite to each other. The first blocking clamp 40 and the second blocking clamp 41 are respectively located at two opposite ends of the battery cell 3 to be clamped, so that the top of the battery cell 3 to be clamped forms a plurality of directional ejection ports through a plurality of second blocking clamps 41, and the battery cell 3 to be clamped is clamped in the up-and-down direction by the first blocking clamp 40 and the second blocking clamp 41, so that the battery cell 3 to be clamped is clamped in both the thickness direction and the up-and-down direction;When detecting failure states such as thermal runaway and heat spread of the battery cell 3 to be clamped, firstly, the first clamping mechanism 20 and the second clamping mechanism 21 are installed on the bottom plate 1, and the first blocking clamp 40 is placed in a specified interval between the first clamping mechanism 20 and the second clamping mechanism 21, and then the battery cell 3 to be clamped is placed on the first blocking clamp 40, and then the second blocking clamp 41 is placed on the top of the battery cell 3 to be clamped, so that the first blocking clamp 40 and the second blocking clamp 41 are respectively located at opposite ends of the battery cell 3 to be clamped. The first clamping mechanism 20 and the second clamping mechanism 21 are fixedly connected to the bottom plate 1 through the bottom screws 7, and the battery cell 3 to be clamped, the first blocking clamp block 40, and the second blocking clamp block 41 are fixedly clamped between the first clamping mechanism 20 and the second clamping mechanism 21 through bolts. In addition, the second blocking clamp block 41 provides a downward force for the first blocking clamp block 40, so that the first blocking clamp block 40 can block the bottom of the battery cell 3 to be clamped more tightly. Finally, the external heating plate is connected to the battery cell 3 to be clamped. On the large surface of the core 3, it is used to accelerate the simulation of the thermal failure inside the battery pack, and the other two sides of the battery cell 3 to be clamped are blocked by hot melt adhesive, or blocked by other supporting and blocking parts 4 that can achieve blocking, so that only a directional airflow ejection port is formed at the top of the battery cell 3 to be clamped. In addition, the airflow ejection port can also be formed at the side end of the battery cell 3 to be clamped in the same way as above. Therefore, by controlling the airflow to eject in a specific direction during the thermal failure test of the battery cell 3 to be clamped by the supporting and blocking parts 4, the influence of uncontrollable factors in the test process can be reduced, and the test conditions can be more uniform each time, thereby improving the repeatability and reliability of the test results, making the test results more accurate, and in the actual use of the battery cell 3 to be clamped, the failure usually ejects in a specific direction. By controlling the ejection direction by the supporting and blocking parts 4, the actual failure of the battery cell 3 to be clamped in the battery pack or equipment can be more accurately simulated, thereby obtaining more realistic test data, and effectively improving the practicality of the thermal failure test of the battery cell 3 to be clamped. ;

[0039] Reference Figure 1-Figure 2 In one embodiment, a first clamping hole 24 is provided on the first clamping mechanism 20, a second clamping hole 25 corresponding to the first clamping hole 24 is provided on the second clamping mechanism 21, a first through hole 42 is provided on the second blocking clamp 41, and the first through hole 42 corresponds to the first clamping hole 24 and the second clamping hole 25 respectively, and a first bolt 44 is passed through the first clamping hole 24, the first through hole 42, and the second clamping hole 25 in sequence to connect the second blocking clamp 41 to the first clamping mechanism 20 and the second clamping mechanism 21 respectively.

[0040] In the above embodiment, the first clamping mechanism 20 is provided with a first clamping hole 24, and the first clamping hole 24 is located at the top of the first clamping mechanism 20, and the second clamping hole 25 is provided on the second clamping mechanism 21, wherein the first clamping hole 24 and the second clamping hole 25 are provided correspondingly, so that the second clamping hole 25 is located at the top of the second clamping mechanism 21, and in addition, a first through hole 42 is provided on the second blocking clamping block 41, and the second blocking clamping block 41 includes but is not limited to a rectangular, square, and circular shape, and the first through hole 42 is preferably in a runway shape, and when the second When the blocking clamp 41 is arranged between the first clamping mechanism 20 and the second clamping mechanism 21, the first through hole 42 corresponds to the first clamping hole 24 and the second clamping hole 25 respectively, and the first bolt 44 passes through the first clamping hole 24, the first through hole 42, and the second clamping hole 25 in sequence to connect the second blocking clamp 41 to the first clamping mechanism 20 and the second clamping mechanism 21 respectively. Therefore, when the second blocking clamp 41 is rectangular, the first through hole 42 extends along the short side direction of the second blocking clamp 41, ensuring that the long sides of both sides of the first through hole 42 The first through hole 42 is preferably arranged in the middle of the second blocking clamp 41. When the second blocking clamp 41 is attached to the battery cell 3 to be clamped with its long side, the first bolt 44 can be adjusted in the length direction of the first through hole 42, so that the second blocking clamp 41 can adapt to the battery cell 3 to be clamped with a smaller width. In addition, when the width of the battery cell 3 to be clamped is larger, the second blocking clamp 41 is rotated 90 degrees to make the short side of the second blocking clamp 41 attached to the battery cell 3 to be clamped, so that the through hole 42 is adjusted. By rotating the position of the second sealing clamp 41 to adjust the position of the first bolt 44 in the first through hole 42, different sizes of battery cells 3 to be clamped can be adapted, thereby increasing the flexibility of the second sealing clamp 41, so that a set of tooling is suitable for battery cells 3 to be clamped in various specifications, thereby improving the versatility of the tooling. The tester only needs to move the position of the second sealing clamp 41 to adapt to different sizes of battery cells 3 to be clamped, without having to replace different tooling, thereby simplifying the operation process, reducing the complexity and tediousness of the operation, and reducing the cost and workload.

[0041] Furthermore, the thickness of the first blocking clamp 40 and the second blocking clamp 41 are the same. When the first blocking clamp 40 and the second blocking clamp 41 are clamped on the battery cell 3 to be clamped, the thickness of the first blocking clamp 40 and the second blocking clamp 41 are respectively the same as the thickness of the battery cell 3 to be clamped, so that the first clamping mechanism 20 and the second clamping mechanism 21 can be tightly clamped on the large surfaces on both sides of the battery cell 3 to be clamped, which can effectively avoid unnecessary gaps between the battery cell 3 to be clamped and the first clamping mechanism 20 and the second clamping mechanism 21, respectively, and ensure that pressure is evenly applied to the battery cell 3 to be clamped during the clamping process, which helps to avoid bulging on the surface of the battery cell 3 to be clamped in the gap due to uneven pressure distribution, thereby maintaining the stability and consistency of the thermal failure test of the battery cell 3 to be clamped.

[0042] Reference Figure 1-Figure 2 In one embodiment, a third clamping hole 26 is provided on the first clamping mechanism 20, a fourth clamping hole 27 corresponding to the third clamping hole 26 is provided on the second clamping mechanism 21, a second through hole 43 is provided on the first blocking clamp 40, and the second through hole 43 corresponds to the third clamping hole 26 and the fourth clamping hole 27 respectively, and the first blocking clamp 40 is connected to the first clamping mechanism 20 and the second clamping mechanism 21 respectively by a second bolt 45 that penetrates the third clamping hole 26, the second through hole 43, and the fourth clamping hole 27 in sequence.

[0043] In the above embodiment, the third clamping hole 26 is provided on the first clamping mechanism 20, and the third clamping hole 26 is located at the top of the first clamping mechanism 20, and the fourth clamping hole 27 is provided on the second clamping mechanism 21, wherein the third clamping hole 26 is provided corresponding to the fourth clamping hole 27, so that the third clamping hole 26 is located at the top of the second clamping mechanism 21, and the second through hole 43 is provided on the first blocking clamp 40, and the first blocking clamp 40 is preferably in a long strip shape, so that the length of the first blocking clamp 40 is greater than or equal to the length of the battery cell 3 to be clamped, so as to ensure that the first blocking clamp 40 can completely block the battery cell 3 to be clamped The ejection port at the bottom, and when the first blocking clamp 40 is arranged between the first clamping mechanism 20 and the second clamping mechanism 21, the second through hole 43 corresponds to the first clamping hole 24 and the second clamping hole 25 respectively, and the second bolt 45 passes through the third clamping hole 26, the second through hole 43, and the fourth clamping hole 27 in sequence to connect the second blocking clamp 41 with the first clamping mechanism 20 and the second clamping mechanism 21 respectively, so that the first clamping mechanism 20 and the second clamping mechanism 21 and the first blocking clamp 40 together form a stable structure, ensuring the firmness and reliability of the entire battery cell directional ejection tooling.

[0044] Reference Figure 1-Figure 2 In one embodiment, a plurality of third through holes 5 and a plurality of fourth through holes 6 are provided on the base plate 1, and the third through holes 5 correspond to the fourth through holes 6, and the third through holes 5 and / or the fourth through holes 6 extend along the opposite side direction of the base plate 1, and the first clamping mechanism 20 is connected to the base plate 1 by passing the first screw 8 through the third through hole 5, and the second clamping mechanism 21 is connected to the base plate 1 by passing the second screw 9 through the fourth through hole 6.

[0045] In the above embodiment, when the bottom plate 1 is rectangular, a plurality of third through holes 5 and a plurality of fourth through holes 6 are provided on the bottom plate 1, and the plurality of third through holes 5 are arranged on the bottom plate 1 at uniform intervals according to a certain spacing, and the plurality of third through holes 5 are arranged along the length direction of the bottom plate 1, and the fourth through holes 6 are arranged on one side of the third through holes 5, and the plurality of third through holes 5 correspond to the plurality of fourth through holes 6, so that the fourth through holes 6 are also arranged on the bottom plate 1 at uniform intervals according to a certain spacing, and at the same time, the plurality of fourth through holes 6 are arranged along the length direction of the bottom plate 1, wherein the third through holes 5 and / or the fourth through holes 6 extend along the opposite side direction of the bottom plate 1, so that the third through holes 5 and / or the fourth through holes 6 are preferably a runway. shape, so that the long sides of the third through hole 5 and / or the fourth through hole 6 are parallel to the short sides of the bottom plate 1. Therefore, when the third through hole 5 is circular and the fourth through hole 6 is runway-shaped, the first clamping mechanism 20 is fixedly connected to the bottom plate 1 by the first screw 8 penetrating the third through hole 5, and the second clamping mechanism 21 is adjustably connected to the bottom plate 1 by the second screw 9 penetrating the fourth through hole 6 and being adjustable in the fourth through hole 6. This helps to adjust the spacing of the specified intervals through the first clamping mechanism 20 and the second clamping mechanism 21 to match the thickness of different thicknesses or the thickness of multiple battery cells 3 to be clamped after being stacked, effectively improving the scope of application and flexibility of the entire battery cell directional spraying tooling.

[0046] Reference Figure 1-Figure 3 In one embodiment, a support platform 7 is provided in the third through hole 5 and the fourth through hole 6. The support platform 7 is located at an end of the bottom plate 1 away from the battery cell 3 to be clamped, and extends along the entire circumference of the third through hole 5 and the fourth through hole 6 respectively.

[0047] In the above embodiment, a support platform 7 is respectively arranged in the third through hole 5 and the fourth through hole 6, and the support platform 7 is located at the end of the bottom plate 1 away from the battery cell 3 to be clamped, so that the support platform 7 is located on the side of the bottom plate 1 that contacts the ground or the desktop, wherein the support platform 7 includes a first support platform 70 arranged in the third through hole 5, and a second support platform 71 arranged in the fourth through hole 6, and the first support platform 70 extends in the third through hole 5 along the entire circumference direction of the third through hole 5, and the second support platform 71 extends in the fourth through hole 6 along the entire circumference direction of the fourth through hole 6, and when the screw passes through the bottom plate 1, the nut of the first screw 8 is partially attached to the first support platform 70 , and the height of the nut part of the first screw 8 is less than or equal to the height of the first supporting platform 70 to the end of the bottom plate 1 away from the battery cell 3 to be clamped, so that the nut part of the first screw 8 is located in the third through hole 5, and at the same time, the nut part of the second screw 9 is attached to the second supporting platform 71, and the height of the nut part of the second screw 9 is less than or equal to the height of the second supporting platform 71 to the end of the bottom plate 1 away from the battery cell 3 to be clamped, so that the nut part of the second screw 9 is located in the fourth through hole 6, thereby ensuring that when the screw passes through the bottom plate 1 to connect the clamping mechanism 2, the nut part of the screw does not protrude on the side of the bottom plate 1 away from the battery cell 3 to be clamped, so that the contact between the bottom plate 1 and the desktop or the ground is more stable.

[0048] Reference Figure 1 In one embodiment, the clamping mechanism 2 further includes a clamping plate 22 disposed on the bottom plate 1 , and the size of the clamping plate 22 is greater than or equal to the size of the battery cell 3 to be clamped.

[0049] In the above embodiment, the clamping mechanism 2 also includes a clamping plate 22, and there are preferably two clamping plates 22, which are respectively arranged on both sides of the battery cell 3 to be clamped for clamping the battery cell 3 to be clamped, and the clamping plate 22 is preferably rectangular, so that the clamping plate 22 is vertically arranged on the bottom plate 1, wherein the size of the clamping plate 22 is also greater than or equal to the size of the battery cell 3 to be clamped, so that the battery cell 3 to be clamped can be completely fitted by the clamping plate 22 when clamped between the two clamping plates 22, which can reduce the influence of external interference factors on the detection of the battery cell 3 to be clamped, and improve the detection accuracy of thermal runaway failure detection; in addition, the clamping plate 22 is preferably a transparent acrylic plastic plate, which helps the operator to effectively monitor the thermal failure of the battery cell 3 to be clamped after the eruption in real time, and can visually detect the direction of the ejected heat flow channel, the failure position, etc., and at the same time, it is more convenient to turn on and off the working status of the external heating device in real time, which helps the operator to understand the detection test status in real time.

[0050] Reference Figure 1 In one embodiment, the clamping mechanism 2 further includes a reinforcing plate 23 , and the reinforcing plate 23 is fixedly connected to a side of the clamping plate 22 away from the battery cell 3 to be clamped.

[0051] In the above embodiment, the clamping mechanism 2 also includes a reinforcement plate 23, wherein the reinforcement plate 23 is arranged on the side of the clamping plate 22 away from the battery cell 3 to be clamped, and the height and width of the reinforcement plate 23 are consistent with the clamping plate 22. In a high-load or frequent operation environment, the reinforcement plate 23 provides an additional layer of protection, which reduces the risk of failure or safety accidents of the entire battery cell directional spraying tooling due to damage to the clamping plate 22, and improves the safety of operation. In addition, the reinforcement plate 23 is preferably a U-shaped steel plate to ensure the stability of the clamping plate 22. The U-shaped design can provide the operator with a larger observation space when visually observing more transparent clamping plates 22, ensuring that the operator can more clearly observe and record the thermal failure of the battery cell 3 to be clamped after the eruption. By providing a more intuitive observation method, the operator can quickly judge the state of the battery cell 3 to be clamped, reduce unnecessary operating steps, and improve work efficiency and the success rate of the experiment.

[0052] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A battery core directional spraying tool, characterized in that: It includes a bottom plate, a clamping mechanism, and a supporting and blocking member; The clamping mechanism comprises a first clamping mechanism and a second clamping mechanism which are arranged on the bottom plate and correspond to each other, and the first clamping mechanism and the second clamping mechanism are used to clamp the battery cell to be clamped; The supporting and blocking member comprises a first blocking clamp block and a plurality of second blocking clamp blocks, wherein the first blocking clamp block and the plurality of second blocking clamp blocks are clamped between the first clamping mechanism and the second clamping mechanism; The first blocking clamp is arranged on the bottom plate to abut the bottom of the battery cell to be clamped, and a plurality of the second blocking clamps are arranged at intervals on the top of the battery cell to be clamped, and directional ejection ports are formed between the second blocking clamps.

2. The battery core directional spraying tooling according to claim 1, characterized in that: A first clamping hole is provided on the first clamping mechanism, a second clamping hole corresponding to the first clamping hole is provided on the second clamping mechanism, a first through hole is provided on the second sealing clamp block, and the first through hole corresponds to the first clamping hole and the second clamping hole respectively, and a first bolt is passed through the first clamping hole, the first through hole and the second clamping hole in sequence to connect the second sealing clamp block to the first clamping mechanism and the second clamping mechanism respectively.

3. The battery core directional spraying tooling according to claim 2, characterized in that: The first through hole is in a racetrack shape.

4. The battery core directional spraying tooling according to claim 1, characterized in that: A third clamping hole is provided on the first clamping mechanism, a fourth clamping hole corresponding to the third clamping hole is provided on the second clamping mechanism, a second through hole is provided on the first sealing clamp block, and the second through hole corresponds to the third clamping hole and the fourth clamping hole respectively, and the first sealing clamp block is connected to the first clamping mechanism and the second clamping mechanism respectively by a second bolt that penetrates the third clamping hole, the second through hole and the fourth clamping hole in sequence.

5. The battery core directional spraying tool according to claim 1, characterized in that: The base plate is provided with a plurality of third through holes and a plurality of fourth through holes, and the third through holes correspond to the fourth through holes, and the third through holes and / or the fourth through holes extend along opposite sides of the base plate, and the first clamping mechanism is connected to the base plate by passing through the third through holes with a first screw, and the second clamping mechanism is connected to the base plate by passing through the fourth through holes with a second screw.

6. The battery core directional spraying tool according to claim 5, characterized in that: The third through hole and / or the fourth through hole is in a racetrack shape.

7. The battery core directional spraying tool according to claim 1, characterized in that: The thickness of the first blocking clamp and the second blocking clamp are respectively the same as the thickness of the battery cell to be clamped.

8. The battery core directional spraying tool according to claim 5, characterized in that: A support platform is disposed in the third through hole and the fourth through hole. The support platform is located at an end of the bottom plate away from the battery cell to be clamped and extends along the entire circumference of the third through hole and the fourth through hole respectively.

9. The battery core directional spraying tooling according to claim 2, characterized in that: The clamping mechanism further comprises a clamping plate arranged on the bottom plate, and the size of the clamping plate is greater than or equal to the size of the battery cell to be clamped.

10. The battery core directional spraying tool according to claim 9, characterized in that: The clamping mechanism further comprises a reinforcing plate, and the reinforcing plate is fixedly connected to a side of the clamping plate away from the battery cell to be clamped.

11. The battery core directional spraying tool according to claim 9, characterized in that: The clamping plate is a transparent acrylic plastic plate.

12. The battery core directional spraying tool according to claim 10, characterized in that: The reinforcement plate is a U-shaped steel plate.

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