A battery pack puncture test device

Abstract

The present invention is applicable to the field of battery safety testing, and discloses a battery pack puncture test device, including a test platform, a puncture needle module and a clamping assembly. The battery pack is placed on the test platform, a first installation area is arranged on the left side and / or the right side of the test platform, a second installation area is arranged on the front side and / or the rear side, a third installation area is arranged on the top, and a fourth installation area is arranged on the bottom. The puncture needle module is installed on any one of the first installation area, the second installation area, the third installation area and the fourth installation area, and the puncture needle module is detachably connected to the test platform. The puncture needle module is used to puncture the battery pack, and the clamping assembly is installed on the test platform to clamp the battery pack; the user can install the puncture needle module in the corresponding installation area according to the puncture position of different types of battery packs, thereby reducing production costs and improving economic benefits.

Description

Technical Field

[0001] The present invention relates to the field of battery safety testing, and in particular to a battery pack puncture test device. Background Art

[0002] The safety status of lithium-ion batteries is related to many factors, such as material system, design level, production control and battery usage. Internal short circuits are very harmful to batteries. Generally, a needle puncture thermal diffusion test is used to simulate the safety status of the battery when an internal short circuit occurs. The needle puncture thermal diffusion test is to pierce the battery with a steel needle at a certain speed. The puncture position is often different for different usage needs or different types of batteries. For example, the puncture position of some batteries is on the left side of the battery, and the puncture position of some batteries is on the front or top of the battery. However, the needles of existing puncture equipment are often fixed at a certain position on the test platform. Batteries with different puncture positions need to match different puncture equipment, which greatly increases production costs. Summary of the invention

[0003] The object of the present invention is to provide a battery pack puncture test device, which aims to solve the technical problem that the puncture needle of the existing puncture device is fixedly installed at a certain position of the test platform, and batteries with different puncture positions need to be matched with different puncture devices.

[0004] To achieve the above object, the solution provided by the present invention is:

[0005] A battery pack puncture test device is used to perform a puncture test on a battery pack, the battery pack puncture test device comprises a test platform, a puncture needle module and a clamping assembly, the test platform is used to place the battery pack, a first installation area is provided on the left side and / or right side of the test platform, a second installation area is provided on the front side and / or rear side of the test platform, a third installation area is provided above the test platform, and a fourth installation area is provided at the bottom of the test platform, the puncture needle module is installed on any one of the first installation area, the second installation area, the third installation area and the fourth installation area, the puncture needle module is detachably connected to the test platform, the puncture needle module is used to puncture the battery pack, and the clamping assembly is installed on the test platform and is used to clamp the battery pack.

[0006] Preferably, the test platform includes a base plate, a front side plate, a rear side plate, a left side plate, a right side plate and supporting feet, the base plate, the front side plate, the rear side plate, the left side plate and the right side plate enclose a working chamber, the supporting feet are arranged at the bottom of the base plate, the left side plate and / or the right side plate are provided with the first installation area, the front side plate and / or the rear side plate are provided with the second installation area, the third installation area is provided above the base plate, and the fourth installation area is provided at the bottom of the base plate.

[0007] Preferably, the battery pack puncture test device further comprises a fire-fighting pipe, which is arranged on the test platform, wherein the outlet end of the fire-fighting pipe faces the working chamber, and the inlet end of the fire-fighting pipe is used for connecting with a water supply pipeline.

[0008] Preferably, the clamping assembly includes a first clamping mechanism and a second clamping mechanism, the first clamping mechanism includes a battery support back plate that can slide along the front-to-back direction and left-to-right direction of the test platform, and the second clamping mechanism includes a baffle that can slide along the up-and-down direction of the test platform.

[0009] Preferably, the baffle is provided with the third installation area.

[0010] Preferably, the test platform is provided with observation windows at the first installation area, the second installation area and the fourth installation area, the test platform also includes a plurality of transparent high temperature resistant panels, each of the transparent high temperature resistant panels is provided with a puncture hole, the number of the transparent high temperature resistant panels matches the number of the installation areas, one transparent high temperature resistant panel covers one observation window, the transparent high temperature resistant panel can slide back and forth and up and down relative to the test platform, the puncture needle module includes a puncture needle assembly and a puncture needle drive assembly, the puncture needle assembly includes a guide mechanism and a heat-resistant sealing ring, the guide mechanism is detachably connected to the transparent high temperature resistant panel and covers the puncture hole, the heat-resistant sealing ring is arranged between the guide mechanism and the transparent high temperature resistant panel, the puncture needle is slidably arranged in the guide mechanism, the puncture needle drive assembly is detachably connected to the test platform, and the puncture needle drive assembly is used to drive the puncture needle to slide along the guide mechanism and pass through the puncture hole to puncture the battery pack.

[0011] Preferably, the test platform also includes multiple limit plates and multiple groups of adjustment members, the number of the limit plates and the number of groups of the adjustment members match the number of the transparent high-temperature resistant panels, the test platform is recessed at the first installation area, the second installation area and the fourth installation area to form installation grooves adapted to the limit plates, the installation grooves are communicated with the observation window, each of the limit plates is provided with a first sliding groove, a through groove and a mounting hole, the first sliding groove vertically penetrates the limit plate, the through groove penetrates the limit plate horizontally, the through groove is arranged corresponding to the observation window, at least two mounting holes are provided, two or more of the mounting holes are arranged on the side of the limit plate away from the observation window, and are respectively communicated with the first sliding groove, the transparent high-temperature resistant panel is slidably arranged in the first sliding groove, a group of the adjustment members matches one of the transparent high-temperature resistant panels, each group of the adjustment members includes at least two adjustment members, and one adjustment member passes through one of the mounting holes to abut against the transparent high-temperature resistant panel.

[0012] Preferably, the guide mechanism includes a catheter, a first elastic member, a push rod, a first plug and a second plug, the second end of the catheter is provided with an annular protrusion, the first plug is installed at the first end of the catheter, the second plug is installed at the second end of the catheter, the end of the second plug facing away from the catheter is installed in the puncture hole, the push rod is arranged in the catheter and extends out of the catheter through the first plug, the puncture needle is arranged in the catheter and extends out of the catheter through the second plug, the first elastic member is sleeved on the puncture needle, and the first elastic member is elastically compressed between the push rod and the second plug, and the heat-resistant sealing ring is arranged between the transparent high-temperature resistant panel and the annular protrusion.

[0013] Preferably, the limiting plate is provided with a second sliding groove, the puncture needle assembly also includes a second mounting bracket and a second elastic member, the second mounting bracket is arranged in a "J" shape, the second mounting bracket includes a main body, a first bending portion and a second bending portion, the main body is provided with a guide groove, the first bending portion and the second bending portion are respectively arranged on both sides of the bottom of the main body, the first bending portion and the second bending portion are respectively arranged in the second sliding groove, the catheter is installed in the guide groove, the second elastic member is elastically compressed between the main body and the annular protrusion, the second mounting bracket can slide up and down along the second sliding groove, and the catheter can slide back and forth along the guide groove.

[0014] Preferably, the needle drive assembly includes a first mounting bracket, a driving member, a push block, a base and a fastener, the base is mounted on the test platform and located outside the observation window, the base is provided with a plurality of second adjustment holes along the up and down directions, the first mounting bracket is connected to the base through the fastener, the driving member is mounted on the first mounting bracket, the push block is provided at the output end of the driving member, and the front and rear sliding range of the guide mechanism falls within the longitudinal width range of the push block. .

[0015] The battery pack puncture test device provided by the present invention is provided with installation areas at different positions of the test platform, and the connection mode between the puncture needle module and the test platform is set to be a detachable connection mode, so that the user can install the puncture needle module in the corresponding installation area according to the puncture position of different types of battery packs, thereby improving the utilization rate of the battery pack puncture test device, reducing production costs, and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 1 is a diagram of the battery pack puncture test device provided by an embodiment of the present invention in use, in which the puncture needle module is arranged on the left side plate;

[0018] Figure 2 yes Figure 1 A magnified view of middle;

[0019] Figure 3 2 is a diagram showing the battery pack puncture test device provided by an embodiment of the present invention in another direction of use, in which the puncture needle module is arranged on the left side plate;

[0020] Figure 4 yes Figure 3 Enlarged view of middle B;

[0021] Figure 5 yes Figure 3 The cross-section along the CC line;

[0022] Figure 6 Yes Yes Figure 5 Enlarged view of middle D;

[0023] Figure 7 is a schematic diagram of the combination of a crossbar, a second slider assembly and a fine-tuning mechanism provided by an embodiment of the present invention;

[0024] Figure 8 is a structural schematic diagram of a second mounting bracket provided in an embodiment of the present invention;

[0025] Fig. 9 2 is another use state diagram of the battery pack puncture test device provided by an embodiment of the present invention, in which the puncture needle module is arranged on the baffle;

[0026] Fig.10 This is another usage state diagram of the battery pack puncture test device provided by an embodiment of the present invention. In this case, the puncture needle module is arranged on the bottom plate.

[0027] Description of Figure Numbers:

[0028] 10. Test platform; 11. Working chamber; 12. Bottom plate; 121. Fourth installation area; 13. Front side plate; 131. Second installation area; 14. Rear side plate; 15. Left side plate; 151. First protrusion; 152. First installation area; 16. Right side plate; 17. Support foot; 18. Transparent high temperature resistant panel; 181. Puncture hole; 19. Observation window; 101. Limit plate; 102. First sliding groove; 103. Through groove; 104. Installation hole; 105. Second sliding groove; 106. Adjustment member; 107. Press plate;

[0029] 20. needle assembly; 21. needle; 22. guide mechanism; 221. catheter; 2211. annular protrusion; 222. first elastic member; 223. push rod; 224. first plug; 225. second plug; 23. heat-resistant sealing ring; 24. second mounting bracket; 241. body; 2411. guide groove; 242. first bending portion; 243. second bending portion; 25. second elastic member; 26. gasket;

[0030] 30. needle drive assembly; 31. first mounting bracket; 32. drive member; 33. push block; 34. base; 35. fastener; 36. second adjustment hole;

[0031] 40. Clamping assembly; 41. Crossbar; 411. First adjustment hole; 42. Support back plate; 43. First slider assembly; 431. First slider; 432. Second slider; 433. Clamping top plate; 434. Adjusting bolt; 435. Connector; 44. Second slider assembly; 441. Third slider; 442. Fixing bolt; 443. Nut; 45. Fine adjustment mechanism; 451. Second guide rail seat; 452. Second screw rod; 453. Second screw rod mounting block; 46. Baffle; 461. Third mounting area; 47. Lifting assembly; 471. First guide rail seat; 472. First screw rod; 473. First screw rod mounting block;

[0032] 50. Fire hose;

[0033] 60. Drain pipe;

[0034] 70. Switch valve;

[0035] 80. Vertical bar. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0039] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] like Figures 1 to 10 As shown, it is a battery pack puncture test device of an embodiment of the present invention, which is used to perform a puncture test on a battery pack. The X direction is the left in the left-right direction, the Y direction is the front in the front-back direction, and the Z direction is the top in the up-down direction.

[0041] See also Figure 1-Figure 10 As shown, the battery pack puncture test device of an embodiment of the present invention includes a test platform 10, a puncture needle module and a clamping assembly 40. The test platform 10 is used to place the battery pack. A first installation area 152 is provided on the left and / or right side of the test platform 10, a second installation area 131 is provided on the front and / or rear side of the test platform 10, a third installation area 461 is provided above the test platform 10, and a fourth installation area 121 is provided at the bottom of the test platform 10. The puncture needle module is installed on any one of the first installation area 152, the second installation area 131, the third installation area 461 and the fourth installation area 121, and is detachably connected to the test platform 10. The puncture needle module is used to complete the puncture test of the battery pack. The clamping assembly 40 is installed on the test platform 10 and is used to clamp the battery pack to prevent the battery pack from moving during the test.

[0042] It should be noted that when the puncture needle assembly 20 is set on the left or right side of the test platform 10, the clamping assembly 40 can clamp the battery pack from the left or right side; when the puncture needle assembly 20 is set on the front or rear side of the test platform 10, the clamping assembly 40 can clamp the battery pack from the front or rear; when the puncture needle assembly 20 is set above or at the bottom of the test platform 10, the clamping assembly 40 can clamp the battery pack from the top.

[0043] The battery pack puncture test device of the embodiment of the present invention is provided with installation areas at different positions of the test platform 10, and the connection mode between the puncture needle module and the test platform 10 is set to be detachable, so that the user can install the puncture needle module in the corresponding installation area according to the puncture position of different types of battery packs, thereby improving the utilization rate of the battery pack puncture test device, reducing production costs, and improving economic benefits.

[0044] See also Figure 1-Figure 10 As shown, exemplarily, in some embodiments, the test platform 10 includes a bottom plate 12, a front side plate 13, a rear side plate 14, a left side plate 15, a right side plate 16 and a support leg 17. The bottom plate 12, the front side plate 13, the rear side plate 14, the left side plate 15, and the right side plate 16 enclose a working chamber 11, the support leg 17 is arranged at the bottom of the bottom plate 12, the battery pack is placed in the working chamber 11, the left side plate 15 and / or the right side plate 16 are provided with a first installation area 152, the front side plate 13 and / or the rear side plate 14 are provided with a second installation area 131, a third installation area 461 is provided above the bottom plate 12, and a fourth installation area 121 is provided at the bottom of the bottom plate 12.

[0045] It should be noted that Figure 1 , Figure 3 and Fig. 9 The structure of the support leg 17 is Fig.10 The structure of the support foot 17 is the same.

[0046] Furthermore, the battery pack puncture test device also includes a fire hose 50, which is arranged on the test platform 10, with the outlet end of the fire hose 50 facing the working chamber 11, and the inlet end of the fire hose 50 connected to the water pipeline. When testing the battery pack, the inlet end of the fire hose 50 is first connected to the water pipeline (at this time, the water supply device connected to the water pipeline is closed), and then the battery pack is tested. If the battery pack has thermal runaway during the test, the water supply device is immediately opened to pour water into the working chamber 11. By soaking the battery pack that has thermal runaway by pouring water, the fire extinguishing time can be shortened, and the purpose of rapid fire extinguishing and reducing smoke pollution can be achieved, while the waste of fire water can be reduced. In addition, the use of this fire extinguishing method does not require the tester to approach the battery pack for fire extinguishing, and the safety of the tester is guaranteed.

[0047] Furthermore, the battery pack puncture test device also includes a drain pipe 60, which is arranged on the test platform 10 and connected to the working chamber 11. A switch valve 70 is provided on the drain pipe 60. After the fire extinguishing purpose is completed, the water in the working chamber 11 can be discharged through the drain pipe 60.

[0048] Optionally, the drain pipe 60 is disposed at the bottom of the working chamber 11 , or may be disposed at the lower part of the working chamber 11 .

[0049] It can be understood that the test platform 10 can be configured to have a structural shape of the working chamber 11, or it can be configured to be the structural shape of the working chamber 11, that is, the test platform 10 can only include a fixed base, a battery pack placement plate and a support structure, the battery placement plate is installed on the fixed base through the support structure, the clamping assembly 40 is also arranged on the fixed base, and various installation areas are arranged at corresponding positions of the fixed base, and the needle module is detachably installed on the fixed base corresponding to each installation area.

[0050] See also Figure 1-Figure 10 As shown, the clamping assembly 40 includes a first clamping mechanism and a second clamping mechanism. The first clamping mechanism includes a battery support back plate 42 that can slide along the front-to-back direction and the left-to-right direction of the test platform 10, and the second clamping mechanism includes a baffle 46 that can slide along the up-down direction of the test platform 10.

[0051] The first clamping mechanism includes a cross bar 41, a support back plate 42, a first slider assembly 43 and a second slider assembly 44. The first slider assemblies 43 are respectively arranged at both ends of the cross bar 41, wherein one of the first slider assemblies 43 is slidably connected to the left side plate 15, and the other first slider assembly 43 is slidably connected to the right side plate 16. The support back plate 42 is arranged in the working chamber 11, and the support back plate 42 is slidably connected to the cross bar 41 through the second slider assembly 44. When testing, the support back plate 42 is first adjusted from the front and rear directions to make the support back plate 42 fall into the longitudinal range of the battery pack, and then the lateral distance between the support back plate 42 and the battery pack is adjusted by sliding from the left and right directions until the support back plate 42 fits the battery pack, thereby fixing the battery pack to prevent the battery pack from moving laterally during testing. The first clamping mechanism has a simple structure and is easy to operate.

[0052] It can be understood that in order to better fix the battery pack, two groups of first clamping mechanisms can be provided, and the two groups of first clamping mechanisms are arranged at intervals along the front-to-back direction of the test platform 10 .

[0053] Optionally, a first protrusion 151 is provided on the top of the left side plate 15 and the top of the right side plate 16. The connection between the first slider assembly 43 and the left side plate 15 is taken as an example for explanation below. The connection relationship between the second slider assembly 44 and the right side plate 16 is the same and will not be repeated here.

[0054] Optionally, the first slider assembly 43 includes a first slider 431, a second slider 432, a pressing top plate 433, an adjusting bolt 434 and a connecting piece 435. The first slider 431 is arranged in an L-shape, the second slider 432 is arranged in an inverted L-shape, a threaded hole is arranged at the bottom of the first slider 431, and the adjusting bolt 434 passes through the threaded hole and is connected to the pressing top plate 433. The first slider 431 is sleeved on the cross bar 41 and is located on the outer side of the left side plate 15. The pressing top plate 433 abuts against the first protrusion 151. The second slider 432 is sleeved on the cross bar 41 and is located on the inner side of the left side plate 15. The first slider 431 and the second slider 432 are connected by a connecting piece 435. When adjusting, first loosen the adjusting bolt 434 to make the clamping top plate 433 leave the first protrusion 151, move the longitudinal position of the cross bar 41, and after moving into place, tighten the adjusting bolt 434 to make the clamping top plate 433 press against the first protrusion 151 to prevent the first slider assembly 43 from moving. The first slider assembly 43 has a simple structure and is easy to adjust.

[0055] Optionally, the second slider assembly 44 includes a third slider 441, a fixing bolt 442 and a nut 443. The cross bar 41 is longitudinally penetrated with a first adjustment hole 411, and the third slider 441 is longitudinally penetrated with a connecting hole. The third slider 441 is sleeved on the cross bar 41, and the fixing bolt 442 passes through the connecting hole and the first adjustment hole 411 and is connected to the nut 443. When adjusting, first loosen the nut 443, take out the fixing bolt 442, move the third slider 441 into place, and then install the fixing bolt 442 and the nut 443 to prevent the second slider assembly 44 from moving. The second slider assembly 44 has a simple structure and is easy to adjust.

[0056] It is understandable that the first slider assembly 43 may also adopt other sliding structures, as long as it can drive the crossbar 41 to slide forward and backward relative to the test platform 10, and be fixed on the test platform 10 after sliding into place. Similarly, the second slider assembly 44 may also adopt other sliding structures, as long as it can enable the support back plate 42 to slide left and right relative to the crossbar 41, and be fixed on the crossbar 41 after sliding into place.

[0057] When the needle module is located at the top or bottom of the test platform 10 , the second slider assembly 44 and the supporting back plate 42 can be removed to reduce the load on the crossbar 41 .

[0058] The second clamping mechanism includes a baffle 46 and a lifting assembly 47, and the lifting assembly 47 includes a first guide rail seat 471, a first screw rod 472 and a first screw rod mounting block 473. The first guide rail seat 471 is installed on the cross bar 41, one end of the first screw rod 472 is rotatably connected to the baffle 46, and the other end passes through the first guide rail seat 471 and is connected to the first screw rod mounting block 473. The first guide rail seat 471 is threadedly connected to the first screw rod 472. Rotating the first screw rod 472 can enable the first guide rail seat 471 to drive the baffle 46 to move up and down along the test platform 10, thereby achieving the purpose of adjusting the distance between the baffle 46 and the battery pack. When the battery pack needs to be clamped, the baffle 46 is lowered until it abuts against the battery pack.

[0059] Optionally, the first guide rail seat 471 is detachably connected to the cross bar 41 , and when the puncture needle module is located on the left side, right side, front side or rear side of the test platform 10 , the second clamping mechanism can be removed to reduce the load on the cross bar 41 .

[0060] Furthermore, the third mounting area 461 is disposed on the baffle 46. With this design, when the lancet module is located on the top of the test platform 10, the lancet module can be directly mounted on the baffle 46 without providing other supporting structures to support the lancet module.

[0061] Furthermore, when the puncture needle module is installed in the third installation area 461, the battery pack puncture test device also includes a longitudinal rod 80, and the above-mentioned first slider assemblies 43 are respectively provided at both ends of the longitudinal rod 80, one of the first slider assemblies 43 is slidably connected to the front side plate 13, and the other first slider assembly 43 is slidably connected to the rear side plate 14. By setting the longitudinal rod 80, the bearing capacity of the cross bar 41 can be improved, especially when the baffle 46 is set in the middle position of the test platform 10, it can avoid that the pressure of the puncture needle module is all applied to the middle section of the cross bar 41.

[0062] See also Figure 1-Figure 10 As shown, exemplarily, in certain embodiments, the clamping assembly 40 also includes a fine-tuning mechanism 45, the fine-tuning mechanism 45 includes a second guide rail seat 451, a second screw rod 452 and a second screw rod mounting block 453, the second guide rail seat 451 is installed on the cross bar 41, one end of the second screw rod 452 is installed on the second screw rod mounting block 453, and the other end passes through the second guide rail seat 451 and is rotatably connected to the first slider 431, the second guide rail seat 451 is threadedly connected to the second screw rod 452, so that the second guide rail seat 451 can drive the support back plate 42 installed on the cross bar 41 to slide left and right along the test platform 10, thereby achieving the purpose of fine-tuning the distance between the battery pack and the needle 21.

[0063] It can be understood that the puncture needle assembly 20 and the puncture needle drive assembly 30 are both arranged in the working chamber 11, and can also be arranged outside the working chamber 11. If the puncture needle assembly 20 and the puncture needle drive assembly 30 are both arranged outside the working chamber 11, the puncture needle assembly 20 and the test platform 10 need to be sealed and connected. The following description takes the case where the puncture needle assembly 20 and the puncture needle drive assembly 30 are both arranged outside the working chamber 11 as an example.

[0064] See also Figure 1-Figure 8 As shown, exemplarily, in some embodiments, the test platform 10 is provided with observation windows 19 at the first installation area 152, the second installation area 131 and the fourth installation area 121, and the test platform 10 also includes a plurality of transparent high temperature resistant panels 18, each of which is provided with a puncture hole 181, and the number of the transparent high temperature resistant panels 18 matches the number of the installation areas, and one transparent high temperature resistant panel 18 covers one observation window 19, and the transparent high temperature resistant panel 18 can slide forward and backward and up and down relative to the test platform 10, and the needle module includes a needle assembly 20 and a needle drive assembly Part 30, the needle assembly 20 includes a needle 21, a guide mechanism 22 and a heat-resistant sealing ring 23, the guide mechanism 22 is detachably connected to the transparent high-temperature resistant panel 18 and covers the puncture hole 181, the heat-resistant sealing ring 23 is arranged between the guide mechanism 22 and the transparent high-temperature resistant panel 18, the needle 21 is slidably arranged in the guide mechanism 22, the needle driving assembly 30 is detachably connected to the test platform 10, and the needle driving assembly 30 is used to drive the needle 21 to slide along the guide mechanism 22 and pass through the puncture hole 181 to puncture the battery pack, that is, the guide mechanism 22 and the needle driving assembly 30 are both arranged outside the working chamber 11. With this design, on the one hand, the puncture position of the battery pack can be intuitively seen, so that the position of the needle 21 can be adjusted according to the puncture position of the battery pack, and on the other hand, the area of ​​the working chamber 11 accommodating the battery pack can be reduced as much as possible. When the battery pack catches fire and water is poured into the working chamber 11, the amount of water used can be reduced, saving resources.

[0065] Optionally, at least two puncture holes 181 are provided, the guide mechanism 22 covers one of the puncture holes 181, and a sealing plug is provided in the remaining puncture hole 181. With this design, the puncture needle assembly 20 can be installed in different positions according to the puncture position of the battery pack.

[0066] Optionally, the heat-resistant sealing ring 23 is made of heat-resistant rubber.

[0067] Furthermore, the test platform 10 also includes a plurality of limit plates 101 and a plurality of groups of adjustment members 106, the number of the limit plates 101 and the number of groups of adjustment members 106 match the number of transparent high temperature resistant panels 18, the test platform 10 is recessed at the first installation area 152, the second installation area 131 and the fourth installation area 121 to form installation grooves (not shown) adapted to the limit plates 101, the installation grooves are communicated with the observation window 19, each of the limit plates 101 is provided with a first sliding groove 102, a through groove 103 and a mounting hole 104, the first sliding groove 102 vertically penetrates the limit plate 101, the through groove 103 penetrates the limit plate 101 horizontally, the through groove 103 is arranged corresponding to the observation window 19, and the mounting hole 104 is provided with to At least two, two or more mounting holes 104 are all set on the side of the limiting plate 101 away from the observation window 19, and are respectively connected to the first sliding groove 102, the transparent high temperature resistant panel 18 is slidably set in the first sliding groove 102, a group of adjusting members 106 is matched with a transparent high temperature resistant panel 18, and each group of adjusting members 106 includes at least two adjusting members 106, and an adjusting member 106 passes through a mounting hole 104 and abuts against the transparent high temperature resistant panel 18. When in use, first loosen the adjusting member 106, slide the transparent high temperature resistant panel 18 to the required position, so that the puncture hole 181 corresponds to the puncture position of the battery pack, and then tighten the adjusting member 106 to complete the fixing of the transparent high temperature resistant panel 18. The adjustment method is simple and reliable. When the number of mounting holes 104 on a limiting plate 101 is greater than the number of adjusting members 106. The adjusting member 106 can select a suitable mounting hole 104 for installation, and after the transparent high temperature resistant panel 18 slides, a suitable mounting hole 104 can be selected for installation again according to the position of the transparent high temperature resistant panel 18 relative to the limiting plate 101 .

[0068] Optionally, the limiting plate 101 is provided with two rows of mounting holes 104 in the horizontal direction and two rows of mounting holes 104 in the vertical direction, so that the position of the adjusting member 106 can be adjusted within a wide range to better fix the transparent high temperature resistant panel 18 .

[0069] Optionally, the transparent high temperature resistant panel 18 is a high temperature resistant glass panel.

[0070] Optionally, the adjusting member 106 is a screw or a bolt.

[0071] Furthermore, in order to improve the sealing performance between the transparent high temperature resistant panel 18 and the observation window 19, the test platform 10 also includes two pressure plates 107. The pressure plates 107 are in the shape of a U-shaped letter "U". The two pressure plates 107 are respectively arranged on both sides of the transparent high temperature resistant panel 18. An adjustment member 106 passes through an installation hole 104 and abuts against the pressure plate 107. By setting the pressure plate 107 to squeeze and fix the transparent high temperature resistant panel 18, the sealing performance can be improved.

[0072] See also Figure 1-Figure 10As shown, illustratively, in some embodiments, the guide mechanism 22 includes a catheter 221, a first elastic member 222, a push rod 223, a first plug 224 and a second plug 225. The second end of the catheter 221 is provided with an annular protrusion 2211, the first plug 224 is installed at the first end of the catheter 221, the second plug 225 is installed at the second end of the catheter 221, and the end of the second plug 225 away from the catheter 221 is installed in the puncture hole 181, the push rod 223 is arranged in the catheter 221, and passes through the first plug 224 and extends out of the catheter 221, and the needle 21 is arranged in the catheter 221. The first elastic member 222 is sleeved on the thorn 21, and the first elastic member 222 is elastically compressed between the push rod 223 and the second plug 225, and the heat-resistant sealing ring 23 is arranged between the transparent high-temperature resistant panel 18 and the annular protrusion 2211. With this design, the thorn assembly 20 does not need to have a direct connection relationship with the thorn drive assembly 30, which is more convenient when different types of thorns 21 (such as conical, flat) are selected according to experimental requirements. Moreover, by setting the first elastic member 222, the thorn 21 can be automatically reset after completing the test.

[0073] Furthermore, the second plug 225 is detachably connected to the catheter 221, and the second plug 225 is provided with a perforation adapted to the puncture needle 21. With this design, when the puncture needle 21 needs to be replaced, only the puncture needle 21 and the second plug 225 need to be replaced, without replacing the entire puncture needle assembly 20.

[0074] Furthermore, in order to enable the guide mechanism 22 to be firmly fixed on the transparent high temperature resistant panel 18 during testing, the limiting plate 101 is provided with a second sliding groove 105, and the needle assembly 20 also includes a second mounting bracket 24 and a second elastic member 25. The second mounting bracket 24 is arranged in a "J" shape, and the second mounting bracket 24 includes a main body 241, a first bending portion 242 and a second bending portion 243. The main body 241 is provided with a guide groove 2411, and the first bending portion 242 and the second bending portion 243 are respectively arranged at both sides of the bottom of the main body 241. The first bending portion 242 and the second bending portion 243 are respectively arranged in the second sliding groove 105, and the catheter 221 is installed in the guide groove 2411. The second elastic member 25 is elastically compressed between the main body 241 and the annular protrusion 2211. The second mounting bracket 24 can slide up and down along the second sliding groove 105, and the guide mechanism 22 can slide back and forth along the guide groove 2411. The sliding method is simple and reliable, and it is easy to operate.

[0075] Optionally, in order to reduce the wear of the second mounting bracket 24 caused by the friction between the second elastic member 25 and the second mounting bracket 24 during the forward and backward sliding of the guide mechanism 22 , a gasket 26 is provided between the second elastic member 25 and the body 241 .

[0076] See also Figure 1-Figure 10 As shown, exemplarily, in some embodiments, the puncture needle drive assembly 30 includes a first mounting bracket 31, a driving member 32 and a push block 33. The first mounting bracket 31 is slidably mounted on the test platform 10, and the first mounting bracket 31 can slide up and down relative to the test platform. The driving member 32 is mounted on the first mounting bracket 31, and the push block 33 is arranged at the output end of the driving member 32. The forward and backward sliding range of the guide mechanism 22 falls within the longitudinal width range of the push block 33. The puncture needle drive assembly 30 has a simple structure, is easy to operate, and does not require forward and backward sliding adjustment.

[0077] Furthermore, the puncture needle drive assembly 30 also includes a base 34 and a fastener 35. The base 34 is installed on the test platform 10 and is located on the outside of the observation window 19. The base 34 is provided with a plurality of second adjustment holes 36 along the up and down directions. The first mounting bracket 31 is connected to the base 34 through the fastener 35. When adjusting the up and down position of the driving member 32, the fastener 35 is loosened, and after moving the first mounting bracket 31 to the corresponding position, the fastener 35 is retightened.

[0078] Optionally, in order to make the first mounting bracket 31 bear force more evenly, the first mounting bracket 31 is arranged in a "X" shape, and bases 34 are arranged on both sides of the observation window 19 . The first mounting bracket 31 is installed on the bases 34 across the observation window 19 .

[0079] Optionally, the fastener 35 is a bolt.

[0080] Optionally, the driving member 32 may be an electric cylinder, which has a simple and reliable driving mode and is easy to control.

[0081] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery pack puncture test device, used for performing a puncture test on a battery pack, characterized in that: The battery pack puncture test device comprises a test platform, a puncture needle module and a clamping assembly, wherein the test platform is used to place the battery pack, a first installation area is arranged on the left side and / or right side of the test platform, a second installation area is arranged on the front side and / or rear side of the test platform, a third installation area is arranged above the test platform, and a fourth installation area is arranged at the bottom of the test platform, the puncture needle module is installed on any one of the first installation area, the second installation area, the third installation area and the fourth installation area, the puncture needle module is detachably connected to the test platform, and the puncture needle module is used to puncture The battery pack, the clamping assembly is installed on the test platform and is used to clamp the battery pack; the test platform is provided with observation windows at the first installation area, the second installation area and the fourth installation area, the test platform also includes a plurality of transparent high temperature resistant panels, each of the transparent high temperature resistant panels is provided with a puncture hole, the number of the transparent high temperature resistant panels matches the number of the installation areas, one transparent high temperature resistant panel covers one observation window, the transparent high temperature resistant panel can slide back and forth and up and down relative to the test platform, the pricking needle module includes a pricking needle assembly and a pricking needle The drive assembly comprises a puncture needle, a guide mechanism and a heat-resistant sealing ring, the guide mechanism is detachably connected to the transparent high-temperature resistant panel and covers the puncture hole, the heat-resistant sealing ring is arranged between the guide mechanism and the transparent high-temperature resistant panel, the puncture needle is slidably arranged in the guide mechanism, the puncture needle drive assembly is detachably connected to the test platform, and the puncture needle drive assembly is used to drive the puncture needle to slide along the guide mechanism and pass through the puncture hole to puncture the battery pack; the guide mechanism comprises a catheter, a first elastic member, a push rod, a first plug and a second plug, the second plug of the catheter An annular protrusion is provided at the end, the first plug is installed at the first end of the catheter, the second plug is installed at the second end of the catheter, the end of the second plug facing away from the catheter is installed in the puncture hole, the push rod is arranged in the catheter, and passes through the first plug to extend out of the catheter, the puncture needle is arranged in the catheter, and passes through the second plug to extend out of the catheter, the first elastic member is sleeved on the puncture needle, and the first elastic member is elastically compressed between the push rod and the second plug, and the heat-resistant sealing ring is arranged between the transparent high-temperature resistant panel and the annular protrusion.

2. The battery pack puncture test device according to claim 1, characterized in that: The test platform includes a base plate, a front side plate, a rear side plate, a left side plate, a right side plate and supporting feet. The base plate, the front side plate, the rear side plate, the left side plate and the right side plate are collectively formed to form a working chamber. The supporting feet are arranged at the bottom of the base plate. The left side plate and / or the right side plate are provided with the first installation area. The front side plate and / or the rear side plate are provided with the second installation area. The third installation area is provided above the base plate, and the fourth installation area is provided at the bottom of the base plate.

3. The battery pack puncture test device according to claim 2, characterized in that: The battery pack puncture test device also includes a fire hose, which is arranged on the test platform, the outlet end of the fire hose faces the working chamber, and the inlet end of the fire hose is used to be connected to a water supply pipeline.

4. The battery pack puncture test device according to claim 1, characterized in that: The clamping assembly includes a first clamping mechanism and a second clamping mechanism. The first clamping mechanism includes a battery support back plate that can slide along the front-to-back direction and the left-to-right direction of the test platform. The second clamping mechanism includes a baffle that can slide along the up-down direction of the test platform.

5. The battery pack puncture test device according to claim 4, characterized in that: The baffle is provided with the third mounting area.

6. The battery pack puncture test device according to claim 1, characterized in that: The test platform also includes multiple limit plates and multiple groups of adjustment parts. The number of the limit plates and the number of groups of the adjustment parts match the number of the transparent high-temperature resistant panels. The test platform is recessed at the first installation area, the second installation area and the fourth installation area to form installation grooves that are adapted to the limit plates. The installation grooves are communicated with the observation window. Each of the limit plates is provided with a first sliding groove, a through groove and a mounting hole. The first sliding groove vertically penetrates the limit plate, and the through groove penetrates the limit plate horizontally. The through groove is arranged corresponding to the observation window. There are at least two mounting holes. Two or more mounting holes are arranged on the side of the limit plate away from the observation window and are respectively communicated with the first sliding groove. The transparent high-temperature resistant panel is slidably arranged in the first sliding groove. A group of the adjustment parts matches one of the transparent high-temperature resistant panels. Each group of the adjustment parts includes at least two adjustment parts. One adjustment part passes through one of the mounting holes and abuts against the transparent high-temperature resistant panel.

7. The battery pack puncture test device according to claim 6, characterized in that: The limiting plate is provided with a second sliding groove, and the puncture needle assembly also includes a second mounting bracket and a second elastic member. The second mounting bracket is arranged in a "J" shape, and the second mounting bracket includes a main body, a first bending portion and a second bending portion. The main body is provided with a guide groove, and the first bending portion and the second bending portion are respectively arranged on both sides of the bottom of the main body, and the first bending portion and the second bending portion are respectively arranged in the second sliding groove, and the catheter is installed in the guide groove, and the second elastic member is elastically compressed between the main body and the annular protrusion, and the second mounting bracket can slide up and down along the second sliding groove, and the catheter can slide forward and backward along the guide groove.

8. The battery pack puncture test device according to claim 1, characterized in that: The puncture needle drive assembly includes a first mounting bracket, a driving member, a push block, a base and a fastener. The base is mounted on the test platform and is located outside the observation window. The base is provided with a plurality of second adjustment holes along the up and down directions. The first mounting bracket is connected to the base through the fastener. The driving member is mounted on the first mounting bracket. The push block is provided at the output end of the driving member. The front and rear sliding range of the guide mechanism falls within the longitudinal width range of the push block.

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