Automatic detection equipment for energy storage battery

Abstract

The present invention discloses an automatic detection device for energy storage batteries, which relates to the technical field of battery packaging detection, including a battery pack, wherein the battery pack has a liquid injection port, and further includes: a detection component that can be sealed and installed at the liquid injection port of the battery pack, wherein the detection component has a hollow cavity connected to the liquid injection port of the battery pack; a vacuum pumping component, which is used to evacuate the hollow cavity to create a low-pressure space; and a detection component, wherein when the air pressure in the hollow cavity is lower than a preset value, the detection component separates the hollow cavity into two unconnected closed spaces, and the vacuum pumping component stops evacuating air. During the static process, the detection component monitors the pressure difference change in the two closed spaces. The present invention can detect the sealing performance of the battery pack through the pressure difference change in the two spaces, and does not need to immerse the battery pack in water for detection, which also saves subsequent drying and other processes, and can also prevent water or other liquids from entering the battery pack during detection, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of battery packaging detection, in particular to automatic detection equipment for energy storage batteries. Background Art

[0002] At present, the packaging inspection of thermal insulation protective materials for energy storage batteries mainly includes the following aspects: 1. Air tightness inspection, to detect whether the battery pack has air leakage to ensure the normal operation and safety of the battery; 2. Water immersion inspection, to detect whether the battery pack is waterproof to prevent electrolyte leakage or water ingress; 3. X-ray inspection, to detect the internal structure, defects, welding points, tabs, diaphragms and other parameters of the battery.

[0003] Among them, the airtightness test is used to evaluate whether the material can effectively prevent the penetration and leakage of gas or liquid. Generally, the battery pack is inflated or vacuumed through the liquid injection port, and then the battery pack is immersed in water to observe whether there are bubbles to achieve the effect of sealing performance test;

[0004] For example, Chinese patent publication number CN115112307B discloses a new energy vehicle battery pack sealing test device. The device connects a hard air pipe to the air hole (i.e., the liquid filling port) of the battery pack, and delivers compressed gas inward to make the internal pressure greater than the water pressure, and observes whether bubbles are generated in the water to achieve the purpose of detection.

[0005] However, this detection method requires subsequent cleaning and drying of the battery pack, and during the detection process, water or other liquids used for detection may enter the battery pack, thereby affecting other processes such as liquid injection after the detection. Not only are the operations and processes cumbersome, but there are also many influencing factors, resulting in low work efficiency. Summary of the invention

[0006] The object of the present invention is to provide an automatic detection device for energy storage batteries to solve at least one technical problem existing in the above-mentioned prior art.

[0007] To achieve the above object, the present invention provides the following technical solution: an automatic detection device for an energy storage battery, comprising a battery pack, wherein the battery pack has a liquid injection port, and further comprising:

[0008] A detection member capable of being sealed and mounted at the liquid injection port of the battery pack, wherein the detection member has a hollow cavity in communication with the liquid injection port of the battery pack;

[0009] A vacuum assembly is used to evacuate air from the hollow cavity to create a low-pressure space;

[0010] The detection component, when the air pressure in the hollow cavity is lower than a preset value, the detection component separates the hollow cavity into two unconnected closed spaces, and the vacuum component stops pumping air. During the static process, the detection component monitors the pressure difference changes in the two closed spaces.

[0011] Preferably, the detection assembly includes two sets of partition assemblies arranged opposite to each other on the inner wall of the hollow cavity;

[0012] The partition assembly includes an installation cavity formed on the inner wall of the hollow cavity, the inner wall of the installation cavity is also provided with a slot, and a partition plate is slidably installed in the slot, a through hole slot is formed inside the partition plate, and a first spring is connected between the inner wall of the through hole slot and the inner wall of the slot;

[0013] The detection component also includes a limiting component for limiting the partition plate, and when the air pressure in the hollow cavity is lower than a preset value, the limiting component releases the limiting effect on the partition plate.

[0014] Preferably, the limiting assembly comprises a limiting convex plate integrally formed on the upper and lower outer walls of the partition plate;

[0015] It also includes a slide groove opened on the inner walls of the upper and lower sides of the installation cavity, a slider is installed in the slide groove for vertical sliding, and a second spring is connected between the slider and the inner wall of the slide groove away from the partition plate, an elastic bag embedded in the limiting convex plate is installed on the outer wall of the slider, the interior of the elastic bag is filled with high-pressure gas, and the cross-section of the elastic bag is circular, an installation channel is opened inside the detection component, and a connecting pipe is installed in the installation channel to connect the elastic bags on the upper and lower sides of the partition plate.

[0016] Preferably, a puncture assembly is further included, wherein the puncture assembly includes a puncture needle fixed to the inner wall of the mounting cavity, and when the elastic bag located above the partition plate expands and exceeds a preset expansion range, it touches the puncture needle and is punctured.

[0017] Preferably, it also includes a puncture component, which includes a movable groove opened inside the detection part, and the connecting tube passes through the movable groove, and a sleeve block is fixed to the outer wall of the connecting tube located in the movable groove, and the outer wall of the sleeve block near the top is provided with two elastically deformable protrusions, and the opposite surfaces of the two protrusions are fixed with cutting blades, and the inner wall of the movable groove near the top is set to be conical.

[0018] Preferably, the gas inside the elastic bag is a rare gas, and an electrode column connected to an external voltage device is installed inside the hollow cavity above the partition plate. When the elastic bag is punctured, the electrode column will energize the rare gas and cause it to emit colored light when energized. The outer wall near the top of the detection element is set as a transparent observation window.

[0019] Preferably, a rotating rod is rotatably installed on the inner top of the hollow cavity, and a rotating handle is installed on the top of the rotating rod extending out of the detection piece, the opposite surfaces of the two partition plates are provided with semicircular grooves, and the two semicircular grooves can fit tightly with the rotating rod, and a cam is also fixed to the outer wall of the rotating rod, and the opposite surfaces of the two partition plates are provided with arc grooves that can accommodate the cam.

[0020] Preferably, the detection member has an insertion tube below which can be inserted into the filling port of the battery pack, and the outer diameter of the insertion tube is the same as the inner diameter of the filling port, the interior of the insertion tube is annularly distributed with a plurality of through holes, and a telescopic piece is slidably installed in the through hole, the outer wall of the rotating rod extending out of the insertion tube is fixed with a fixed plate, the outer wall of the fixed plate is fixed with a plurality of fixing rods distributed in a ring shape, and a connecting rod is rotatably connected between the fixing rod and the adjacent telescopic piece, the outer wall sliding sleeve of the detection member is provided with a sealing ring, and the outer wall of the detection member is also threadedly connected with a bolt for tightening the sealing ring.

[0021] Preferably, the vacuum pumping assembly comprises an exhaust pipe connected to the outer wall of the detection component, the exhaust pipe is connected to an external exhaust pump, and the exhaust pipe is communicated with the space of the hollow cavity above the partition plate.

[0022] Preferably, a guide rod for slidingly guiding the partition plate is provided between the partition plate and the slot on the inner wall of the installation cavity.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention can detect the sealing performance of the battery pack through the pressure difference change in the two spaces, and there is no need to immerse the battery pack in water for detection, which also saves subsequent drying processes and the like. It can also prevent water or other liquids from entering the battery pack during detection, thus saving processes and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of the detection component of the present invention installed at the liquid filling port of the battery pack;

[0026] Figure 2 For the present invention Figure 1 A perspective upward stereogram;

[0027] Figure 3 It is a front cross-sectional view of the detection member of the present invention;

[0028] Figure 4 For the present invention Figure 3 Cutaway stereogram of perspective;

[0029] Figure 5 For the present invention Figure 3 Sectional view along AA;

[0030] Figure 6 For the present invention Figure 3 Sectional view along BB;

[0031] Figure 7 A simplified view of the elastic bladder of the present invention during expansion;

[0032] Figure 8 It is a cross-sectional view of the puncture assembly in the second embodiment of the present invention.

[0033] In the figure: 1. battery pack; 2. detection part; 3. transparent observation window; 4. exhaust pipe; 5. insertion tube; 6. hollow cavity; 7. installation cavity; 8. through hole groove; 9. partition plate; 10. first spring; 11. limit convex plate; 12. elastic bag; 13. connecting pipe; 14. puncture needle; 15. electrode column; 16. slide groove; 17. slider; 18. second spring; 19. rotating rod; 20. cam; 21. semicircular groove; 22. arc groove; 23. bolt; 24. sealing ring; 25. fixed plate; 26. telescopic piece; 27. connecting rod; 28. fixed rod; 29. ​​movable groove; 30. sleeve block; 31. cutting blade. DETAILED DESCRIPTION

[0034] 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.

[0035] Example 1

[0036] See also Figures 1 to 7 The present invention provides a technical solution: an automatic detection device for an energy storage battery, comprising a battery pack 1, the battery pack 1 having a liquid injection port, and further comprising:

[0037] A detection member 2 that can be sealed and mounted at the liquid filling port of the battery pack 1, wherein the detection member 2 has a hollow cavity 6 in communication with the liquid filling port of the battery pack 1;

[0038] A vacuum pumping assembly is used to evacuate air from the hollow cavity 6 to create a low-pressure space;

[0039] Detection component, when the air pressure in the hollow cavity 6 is lower than the preset value, the detection component separates the hollow cavity 6 into two unconnected closed spaces, and the vacuum component stops pumping air. During the static process, the detection component monitors the pressure difference changes in the two closed spaces.

[0040] When the detection device is used, the detection member 2 is first sealed and connected to the liquid injection port of the battery pack 1, and then the hollow cavity 6 inside the detection member 2 is evacuated by the vacuum assembly to extract the air in the battery pack 1, so that the inside is in a negative pressure state, creating a low-pressure space;

[0041] When the air pressure in the hollow cavity 6 is lower than the preset value, the detection component divides the hollow cavity 6 into two unconnected closed spaces, and the vacuum component stops pumping air, so that the air pressure in the two unconnected spaces remains the same, and then the chamber is left to stand.

[0042] During the static process, the detection component monitors the pressure difference change in the two enclosed spaces. When the pressure difference in the two spaces does not change, it means that the air pressure in the enclosed space connected to the battery pack 1 has not changed, that is, the sealing performance of the battery pack 1 is good. On the contrary, when the pressure difference in the two spaces changes, it means that the battery pack 1 has air intake, which means that the sealing performance of the battery pack 1 is poor.

[0043] Among them, the preferred environment when standing still is a constant temperature environment, which minimizes the impact of the external ambient temperature on the test results, thereby making the test results more accurate.

[0044] In this way, the sealing performance of the battery pack 1 can be detected by the pressure difference change in the two spaces. There is no need to immerse the battery pack 1 in water for detection, which also saves subsequent drying processes. It can also prevent water or other liquids from entering the battery pack 1 during detection, saving processes and improving work efficiency.

[0045] In one of the more preferred embodiments, the detection assembly includes two sets of partition assemblies arranged opposite to each other on the inner wall of the hollow cavity 6;

[0046] The partition assembly includes a mounting cavity 7 formed on the inner wall of the hollow cavity 6, a slot is formed on the inner wall of the mounting cavity 7, and a partition plate 9 is slidably mounted in the slot, a through hole slot 8 is formed inside the partition plate 9, and a first spring 10 is connected between the inner wall of the through hole slot 8 and the inner wall of the slot;

[0047] The detection component also includes a limiting component for limiting the partition plate 9 , and when the air pressure in the middle cavity 6 is lower than a preset value, the limiting component releases the limiting effect on the partition plate 9 .

[0048] For details on the detection components, see Figure 3-4 In the vacuuming stage of the vacuuming component, the partition plate 9 is in a separated state under the limiting action of the limiting component. When the air pressure in the hollow cavity 6 is lower than the preset value as the air is pumped, the limiting component releases the limiting action on the partition plate 9. The two partition plates 9 slide relative to each other under the elastic force of the first spring 10, dividing the hollow cavity 6 into two closed spaces.

[0049] In which, some sealing strips or other measures to increase the sealing performance may be taken on the opposite sides of the two partition plates 9 to ensure that the two partition plates 9 can maintain sealing performance after contact.

[0050] In one of the more preferred embodiments, the limiting assembly includes a limiting convex plate 11 integrally formed on the upper and lower outer walls of the partition plate 9;

[0051] It also includes a slide groove 16 opened on the inner walls of the upper and lower sides of the installation cavity 7, a slider 17 is vertically slidably installed in the slide groove 16, and the slider 17 is connected to the inner wall of the slide groove 16 away from the partition plate 9 by a second spring 18, the outer wall of the slider 17 is installed with an elastic bag 12 embedded in the limiting convex plate 11, the interior of the elastic bag 12 is filled with high-pressure gas, and the cross-section of the elastic bag 12 is circular, the interior of the detection part 2 is opened with a mounting channel, and a connecting pipe 13 is installed in the mounting channel to connect the elastic bags 12 on the upper and lower sides of the partition plate 9.

[0052] For limit components, see Figure 3-4 Before the air is pumped out, the hollow cavity 6 is in a normal pressure state, at which time the elastic capsule 12 is also in an initial state and is embedded in the limiting convex plate 11, and the slider 17, under the elastic force of the second spring 18, keeps the elastic capsule 12 stuck in the limiting convex plate 11 to maintain the limiting effect on the partition plate 9;

[0053] Then, during the process of exhausting air, the air pressure in the hollow cavity 6 gradually decreases, so that a pressure difference occurs between the elastic bag 12 and the hollow cavity 6, and the elastic bag 12 automatically expands under the change of the pressure difference between the inside and the outside. Since it expands in a circular shape, the diameter of the elastic bag 12 becomes larger. Figure 7 As shown by the middle dotted line, due to the expansion of the diameter of the elastic bag 12, the elastic bag 12 will gradually squeeze outward from the limiting convex plate 11, and at the same time, the slider 17 will overcome the elastic force of the second spring 18 and move upward;

[0054] As the elastic bag 12 moves outward, the friction between the elastic bag 12 and the limiting convex plate 11 gradually weakens until it can no longer overcome the elastic force of the first spring 10. At this time, the limiting effect on the partition plate 9 is released, and the two partition plates 9 approach each other, thereby dividing the hollow cavity 6 into two upper and lower closed cavities. In this way, the separation process is automatically realized by utilizing the change in air pressure during the vacuum process, and after separation, the vacuum assembly also stops the vacuum process at the same time.

[0055] It is worth noting that, since the elastic bags 12 on the upper and lower sides are connected through the connecting tube 13 and the elastic bags 12 on both sides expand simultaneously, the pressure difference in the two elastic bags 12 tends to be balanced to ensure that the expansion degrees of the two elastic bags 12 are the same.

[0056] In one of the more preferred embodiments, a puncture assembly is further included, which includes a puncture needle 14 fixed to the inner wall of the installation cavity 7. When the elastic bag 12 located above the partition plate 9 expands and exceeds a preset expansion range, it will touch the puncture needle 14 and be punctured.

[0057] Since the air pressure in the upper and lower spaces is the same or has a certain pressure difference, the elastic capsules 12 on the upper and lower sides of the partition plate 9 expand to a certain extent. When the sealing performance of the battery pack 1 is poor, that is, air intake occurs, the pressure difference between the elastic capsule 12 in the lower space and the space will decrease, thereby causing the elastic capsule 12 located below to decrease. Since the elastic capsules 12 on the upper and lower sides are connected by the connecting tube 13, as the lower elastic capsule 12 shrinks, air will be transported to the upper elastic capsule 12, thereby causing the upper elastic capsule 12 to continue to expand until its expansion exceeds the preset expansion range and touches the puncture needle 14 and is punctured. In this way, when a pressure difference occurs in the upper and lower spaces, the elastic capsule 12 located in the upper space will be punctured, thereby detecting that the sealing performance of the battery pack 1 is poor.

[0058] Embodiment 2 is basically the same as the embodiment 1, except that a second embodiment of the puncture assembly is provided, such as Figure 8 As shown;

[0059] It also includes a puncture component, which includes a movable groove 29 opened inside the detection part 2, and the connecting pipe 13 passes through the movable groove 29. A sleeve block 30 is fixed to the outer wall of the connecting pipe 13 located in the movable groove 29. The outer wall of the sleeve block 30 near the top is provided with two elastically deformable protrusions, and the opposite surfaces of the two protrusions are fixed with cutting blades 31. The inner wall near the top of the movable groove 29 is set to be conical.

[0060] In this embodiment, the connecting tube 13 can be pulled and moved in the detection member 2. In this way, during the air extraction process, since the elastic bags 12 on the upper and lower sides expand at the same time and to the same extent, the two elastic bags 12 have the same pulling effect on the connecting tube 13, so the position of the sleeve block 30 will not change.

[0061] When air intake occurs in the battery pack 1, that is, when the elastic bag 12 located at the bottom shrinks, the elastic bag 12 located at the top expands, and the connecting tube 13 is pulled upward at this time, driving the sleeve block 30 to move upward at the same time. Then the elastic protrusion on the sleeve block 30 contacts the conical inner wall of the movable groove 29, thereby bending inward. At the same time, the cutting blade 31 thereon cuts the connecting tube 13, completing the puncture process, which can also serve the purpose of detecting the sealing of the battery pack 1.

[0062] In one of the more preferred embodiments, the gas inside the elastic capsule 12 is a rare gas, and an electrode column 15 connected to an external voltage device is installed inside the hollow cavity 6 located above the partition plate 9. When the elastic capsule 12 is punctured, the electrode column 15 will energize the rare gas and cause it to emit colored light when it is energized. The outer wall near the top of the detection component 2 is set as a transparent observation window 3.

[0063] When the elastic bag 12 or the connecting tube 13 above is punctured, the rare gas inside will be released and fill the negative pressure space. At this time, the electrode column 15 is energized, which will energize the rare gas in the space and make it emit colored light. In this way, by observing whether there is colored light in the space above through the transparent observation window 3, it can be judged whether the sealing of the battery pack 1 is good, thereby further achieving the purpose of detection;

[0064] The rare gas may be helium, neon, argon or other rare gases.

[0065] In one of the more preferred embodiments, a rotating rod 19 is rotatably installed on the inner top of the hollow cavity 6, and a rotating handle is installed on the top of the rotating rod 19 extending out of the detection member 2, and semicircular grooves 21 are provided on the opposite surfaces of the two partition plates 9, and the two semicircular grooves 21 can fit tightly with the rotating rod 19, and a cam 20 is also fixed to the outer wall of the rotating rod 19, and arc grooves 22 that can accommodate the cam 20 are provided on the opposite surfaces of the two partition plates 9.

[0066] During the above detection process, when the sealing performance of the battery pack 1 is good, the vacuum assembly is used to inflate the air inward in the reverse direction, so that the air pressure in the hollow cavity 6 returns to normal. At the same time, the handle is used to drive the rotating rod 19 to rotate, and the cam 20 thereon pushes against the arc groove 22 to move the two partition plates 9 away from each other and reset, so that the upper and lower sides of the hollow cavity 6 are connected again, and the air pressure in the battery pack 1 is also restored;

[0067] The elastic bag 12 also gradually shrinks and recovers, and is embedded between the limiting convex plates 11 again, completing the re-limiting of the partition plate 9.

[0068] In one of the more preferred embodiments, an implementation method of sealingly connecting the detection member 2 to the liquid filling port of the battery pack 1 is provided;

[0069] An insertion tube 5 that can be inserted into the liquid filling port of the battery pack 1 is provided below the detection member 2, and the outer diameter of the insertion tube 5 is the same as the inner diameter of the liquid filling port. A plurality of through holes are distributed in an annular manner inside the insertion tube 5, and a telescopic piece 26 is slidably installed in the through hole. A rotating rod 19 extends out of the outer wall of the insertion tube 5 and is fixed with a fixed plate 25. A plurality of fixing rods 28 distributed in an annular manner are fixed to the outer wall of the fixing plate 25, and a connecting rod 27 is rotatably connected between the fixing rod 28 and the adjacent telescopic piece 26. A sealing ring 24 is provided on the sliding sleeve of the outer wall of the detection member 2, and a bolt 23 for tightening the sealing ring 24 is also threadedly connected to the outer wall of the detection member 2.

[0070] By inserting the insertion tube 5 from the liquid injection port, and then rotating the rotating rod 19, under the action of the connecting rod 27, the multiple expansion pieces 26 will extend outward and clamp against the inner wall of the battery pack 1 to prevent the insertion tube 5 from detaching from the liquid injection port, and then tightening the bolt 23 to press the sealing ring 24 around the liquid injection port to complete the sealing connection;

[0071] On the contrary, when disassembling, the telescopic sheet 26 can be retracted by rotating the rotating rod 19 in the opposite direction, and then the insertion tube 5 can be pulled out, so that the restriction on the insertion tube 5 can be released while the two partition plates 9 are reset.

[0072] In one of the more preferred embodiments, the vacuum pumping assembly includes an exhaust pipe 4 connected to the outer wall of the detection member 2, the exhaust pipe 4 is connected to an external exhaust pump, and the exhaust pipe 4 is connected to the space of the hollow cavity 6 located above the partition plate 9.

[0073] In one of the more preferred embodiments, a guide rod for slidingly guiding the partition plate 9 is provided between the partition plate 9 and the slot on the inner wall of the installation cavity 7 .

[0074] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for an energy storage battery, comprising a battery pack (1), wherein the battery pack (1) has a liquid injection port, characterized in that: Also includes: A detection component (2) capable of being sealed and mounted at a liquid injection port of a battery pack (1), wherein the detection component (2) has a hollow cavity (6) in the interior thereof which is in communication with the liquid injection port of the battery pack (1); A vacuum assembly, used to evacuate air from the hollow cavity (6) to create a low-pressure space; A detection component, when the air pressure in the hollow cavity (6) is lower than a preset value, the detection component separates the hollow cavity (6) into two closed spaces that are not connected to each other, and the vacuum component stops pumping air, and during the static process, the detection component monitors the change in the pressure difference in the two closed spaces; The detection component comprises two groups of partition components arranged opposite to each other on the inner wall of the hollow cavity (6); The partition assembly comprises a mounting cavity (7) formed on the inner wall of the hollow cavity (6); a slot is formed on the inner wall of the mounting cavity (7), and a partition plate (9) is slidably mounted in the slot; a through hole slot (8) is formed inside the partition plate (9), and a first spring (10) is connected between the inner wall of the through hole slot (8) and the inner wall of the slot; The detection component further comprises a limiting component for limiting the position of the partition plate (9), and when the air pressure in the hollow cavity (6) is lower than a preset value, the limiting component releases the limiting effect on the partition plate (9); The limiting assembly comprises limiting convex plates (11) integrally formed on the upper and lower outer walls of the partition plate (9); The device further comprises a slide groove (16) provided on the inner walls of the upper and lower sides of the installation cavity (7), a slider (17) being vertically slidably installed in the slide groove (16), and a second spring (18) being connected between the slider (17) and the inner wall of the slide groove (16) away from the partition plate (9), an elastic bag (12) embedded in the limiting convex plate (11) being installed on the outer wall of the slider (17), the elastic bag (12) being filled with high-pressure gas, and the cross section of the elastic bag (12) being circular, and an installation channel being provided inside the detection member (2), and a connecting pipe (13) for connecting the elastic bags (12) on the upper and lower sides of the partition plate (9) being installed in the installation channel.

2. The automatic detection device for energy storage batteries according to claim 1, characterized in that: It also includes a puncture assembly, which includes a puncture needle (14) fixed to the inner wall of the installation cavity (7). When the elastic bag (12) located above the partition plate (9) expands and exceeds a preset expansion range, it will touch the puncture needle (14) and be punctured.

3. The automatic detection device for energy storage batteries according to claim 1, characterized in that: The device also comprises a puncturing assembly, the puncturing assembly comprising a movable groove (29) provided inside the detection member (2), the connecting tube (13) passing through the movable groove (29), a sleeve block (30) being fixed to the outer wall of the connecting tube (13) located inside the movable groove (29), two elastically deformable protrusions being provided on the outer wall near the top of the sleeve block (30), and cutting blades (31) being fixed to the opposite surfaces of the two protrusions, and the inner wall near the top of the movable groove (29) being configured to be conical.

4. The automatic detection device for energy storage batteries according to claim 2 or 3, characterized in that: The gas inside the elastic capsule (12) is a rare gas. An electrode column (15) connected to an external voltage device is installed inside the hollow cavity (6) located above the partition plate (9). When the elastic capsule (12) is punctured, the electrode column (15) is energized to energize the rare gas and cause it to emit colored light. The outer wall of the detection element (2) near the top is provided with a transparent observation window (3).

5. The automatic detection device for energy storage batteries according to claim 1, characterized in that: A rotating rod (19) is rotatably mounted on the inner top of the hollow cavity (6), and a rotating handle is mounted on the top of the rotating rod (19) extending out of the detection member (2). Semicircular grooves (21) are provided on the opposite surfaces of the two partition plates (9), and the two semicircular grooves (21) can fit tightly with the rotating rod (19). A cam (20) is also fixed on the outer wall of the rotating rod (19), and arc grooves (22) are provided on the opposite surfaces of the two partition plates (9) for accommodating the cam (20).

6. The automatic detection device for energy storage batteries according to claim 5, characterized in that: The detection member (2) has an insertion tube (5) below it that can be inserted into the liquid injection port of the battery pack (1), and the outer diameter of the insertion tube (5) is the same as the inner diameter of the liquid injection port. The insertion tube (5) has a plurality of through holes distributed in an annular manner inside, and a telescopic sheet (26) is slidably installed in the through hole. The outer wall of the rotating rod (19) extending out of the insertion tube (5) is fixed with a fixing plate (25), and the outer wall of the fixing plate (25) is fixed with a plurality of fixing rods (28) distributed in an annular manner, and a connecting rod (27) is rotatably connected between the fixing rods (28) and adjacent telescopic sheets (26). The outer wall of the detection member (2) is slidably sleeved with a sealing ring (24), and the outer wall of the detection member (2) is also threadedly connected with a bolt (23) for pressing the sealing ring (24).

7. The automatic detection device for energy storage batteries according to claim 1, characterized in that: The vacuum pumping assembly comprises an air suction pipe (4) connected to the outer wall of the detection member (2), the air suction pipe (4) being connected to an external air suction pump, and the air suction pipe (4) being in communication with a space in the hollow cavity (6) located above the partition plate (9).

8. The automatic detection device for energy storage batteries according to claim 1, characterized in that: A guide rod for slidingly guiding the partition plate (9) is provided between the partition plate (9) and the slot on the inner wall of the installation cavity (7).

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