CN113804364B - Battery air tightness detection device and use method - Google Patents

Abstract

The invention discloses a battery air tightness detection device and a use method thereof, belonging to the technical field of air tightness detection devices, wherein the battery air tightness detection device and the use method thereof comprise the following steps: the bottom plate, sliding component, the bed die subassembly, the backup pad, actuating assembly and last mould subassembly are through adding the phosphor powder at the water in the water tank, the hot plate is to the inside air heating of battery box, the water injection mouth is inwards watered, the fluorescence water is full of the water conservancy diversion bottle and down form the sealed box between bounding wall and the bounding wall, close the water valve on the hose, wait the inside air cooling of battery box, in the fluorescence water suction sealed box in the water conservancy diversion bottle, whether permeate in order to confirm the poor position of seal through the fluorescence water, thereby confirm whether the leakproofness of battery box is qualified, also can accurately find unqualified position if the battery box is unqualified, improve subsequent repair efficiency.

Description

A battery air tightness detection device and using method

technical field

The invention belongs to the technical field of air tightness detection devices, and in particular relates to a battery air tightness detection device and a use method.

Background technique

There is an air-tight link in the production process of the battery. If this link is not well controlled, the sulfuric acid in the battery will flow out during charging and discharging, and the battery will be short-circuited due to dry water shortage.

However, in the detection in the prior art, the detection device can only detect whether there is an air leak in the airtightness of the battery, but cannot determine the location of the air leak, and a second detection is required, which reduces the detection efficiency.

Contents of the invention

The object of the present invention is to provide a battery air tightness detection device and a method of use, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A battery air tightness detection device and its use method, comprising: a bottom plate, a sliding assembly, a lower mold assembly, a support plate, a driving assembly and an upper mold assembly.

Bottom plate, the bottom surface of the bottom plate is equipped with first support legs, the number of the first support legs is preferably four, which are respectively located at the four corners of the bottom surface of the bottom plate, and play a supporting role. The hooves are installed on the contact surface with the ground to play an anti-slip effect.

A sliding assembly, the sliding assembly includes a fixed plate installed on the bottom plate, the length of the fixed plate is the same as the length of the bottom plate, slide rails are installed on both sides of the fixed plate along the length direction, between a pair of the slide rails A movement board is slidably connected, and an experiment board is installed on the movement board. By sliding the experiment board back and forth between a pair of slide rails, the battery box placed on the experiment board is driven to move, and the experiment operation is carried out;

A lower mold assembly, which is fixedly installed on the test board and plays the role of placing the battery box;

A support plate, the support plate is arranged above the base plate and is located at the stroke end of the slide rail, a second support leg is connected between the support plate and the base plate, and the number of the second support legs preferably set is four, They are respectively located at the four corners of the lower surface of the support plate to play a supporting role.

A drive assembly, in order to improve the accuracy of the airtightness test, the drive assembly includes a cylinder installed on the support plate, the movable end of the cylinder penetrates the support plate, and a pressure plate is installed at the end through which the movable end penetrates;

The upper mold assembly, the upper mold assembly is fixedly installed on the lower surface of the pressure plate, and the upper mold assembly and the lower mold assembly are tightly fastened by pressing down the pressure plate, thereby providing a good experimental environment for the air tightness experiment.

As a preferred embodiment of the present invention, first limit pins are installed at both ends of the fixed plate along the length direction, and handles for easy pulling are fixedly installed on the moving plate.

As a preferred embodiment of the present invention, a water hole is opened on the experiment board, and a water outlet pipe is installed on the side of the experiment board close to the support plate, and the water outlet pipe is communicated with the water outlet pipe through a water channel. Both sides of the upper surface of the test plate along the length direction are provided with chute seats, and a pair of second limit pins are slidably connected in each of the chute seats. A spring is connected between the seats.

As a preferred embodiment of the present invention, the lower mold assembly includes a lower shroud fixedly installed on the test board, a waterproof ring and a heating plate, the upper surface of the lower shroud is provided with a ring of grooves along the circumference, and the waterproof The ring is fixedly installed on the experiment board in the lower enclosure, and the heating plate is installed on the experiment board in the waterproof ring.

As a preferred aspect of the present invention, the drive assembly further includes a pair of first sleeves installed on the support plate, a pair of first sleeves are slidingly connected with guide shafts, and the lower ends of the guide shafts pass through the The support plate, and the end through which the guide shaft passes through is installed together with the pressure plate.

As a preferred aspect of the present invention, the upper mold assembly includes an upper enclosure fixedly installed with the pressure plate, one side of the upper enclosure communicates with a water injection port, and the lower surface of the upper enclosure is provided with a ring and a ring The rubber ring that matches the groove, a pair of second sleeves are arranged in the upper wall, and a rectangular notch is opened on one side of the pair of second sleeves, and the second sleeves are installed coaxially There is a rack, the lower end of the rack passes through the second sleeve and a pressure block is installed, and a rotating shaft is rotatably connected between the upper wall, one end of the rotating shaft penetrates the upper wall, and the end of the rotating shaft is installed There is a handle, and a pair of gears are coaxially installed on the rotating shaft, and the gears are engaged with the rack.

As a preferred embodiment of the present invention, a ratchet is installed on the rotating shaft, a supporting base is vertically installed on the lower surface of the pressing plate, and a pawl is arranged on the supporting base, and the pawl is opposed to the ratchet.

As a preferred aspect of the present invention, the water outlet pipe is connected to a water tank through a hose, the water tank is connected to the water injection port through a hose, and a water pump is installed on the hose connected to the water injection port, and a water pump is installed on the hose. There is a water valve, and an L-shaped conduit is installed on the lower enclosure, and the L-shaped conduit is connected to the inside of the lower enclosure, and the vertical section of the L-shaped conduit is connected with a diversion bottle.

As a preferred method of the present invention, a method of a battery air tightness detection device includes the following steps:

S1: Manually clamp a pair of second limit pins close to each other, place the battery box in the lower panel, and the pair of second limit pins reset against the inner wall of the battery box under the action of the spring. At this time, the waterproof ring and the heating The plate is located inside the battery box;

S2: Manually push the movement plate to the bottom of the support plate, the cylinder drives the upper wall to press down, the rubber ring is pressed into the ring groove, so that a sealed box is formed between the lower wall and the upper wall, and the rotating handle is turned to drive the gear to rotate. The rotating gear drives the meshing rack to descend, so that the pressing block presses the battery box longitudinally;

S3: Phosphor powder is added to the water in the water tank, the heating plate heats the air inside the battery box, the water injection port is filled with water, the fluorescent water fills the diversion bottle and forms a sealed box between the lower wall and the upper wall, and the hose is closed When the air inside the battery box is cooled, the fluorescent water in the diversion bottle is sucked into the sealed box, and the location of the poor seal can be determined by whether the fluorescent water seeps in.

Beneficial effects of the present invention:

1. In the present invention, phosphor powder is added to the water in the water tank, the heating plate heats the air inside the battery box, the water injection port injects water inward, and the fluorescent water fills the diversion bottle and forms a sealed box body between the lower wall and the upper wall , close the water valve on the hose, wait for the internal air of the battery box to cool down, the fluorescent water in the diversion bottle is sucked into the sealed box, and determine the location of poor sealing by whether the fluorescent water seeps in.

2. The present invention manually clamps a pair of second limit pins close to each other, and places the battery box in the lower panel, and the pair of second limit pins reset against the inner wall of the battery box under the action of the spring, and the waterproof ring The height is higher than the height of the test board, and it is suitable for the opening section of the battery box, and it is offset against the inner wall of the opening section of the battery box, which acts as a lateral fixation. Turning the handle makes the rotating shaft drive the gear to rotate, and the rotating gear drives the meshing connected rack Lower, so that the pressing block presses the battery box longitudinally, and plays a fixed role.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the enlarged schematic view of structure at A place in Fig. 1 of the present invention;

Fig. 3 is a schematic structural diagram of the internal device of the upper enclosure of the present invention;

Fig. 4 is the enlarged schematic diagram of the structure at B place in Fig. 3 of the present invention;

Fig. 5 is a schematic side view of the structure of the present invention.

In the figure: 1. base plate; 2. first support leg; 3. fixed plate; 4. slide rail; 5. exercise plate; 6. support plate; 7. second support leg; 8. cylinder; , the first limit pin; 11, the handle; 12, the test plate; 1201, the water hole; 1202, the chute seat; 13, the outlet pipe; 14, the second limit pin; 15, the spring; 1601, ring groove; 17, waterproof ring; 18, heating plate; 19, guide shaft; 20, upper panel; 21, rubber ring; 22, second sleeve; 2201, rectangular notch; 23, rack; 24, briquetting block; 25, rotating shaft; 26, handle; 27, gear; 28, pawl; 29, water tank; 30, water pump; 31, L-shaped conduit; 32, diversion bottle; 33, first sleeve; 34 , ratchet; 35, support seat; 36, water injection port; 37, water valve.

Detailed ways

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer" and "top/bottom" are based on the orientations or positional relationships shown in the drawings. The positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "set with", "sleeved/connected", "connected", etc. should be understood in a broad sense, such as " Connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal connection between two components. connectivity. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Example

Please refer to accompanying drawing 1, a battery air tightness detection device and its use method, including:

Bottom plate 1, the bottom surface of bottom plate 1 is equipped with the first support leg 2, the number of the first support leg 2 as preferred setting is four, respectively located at the four corners of the bottom surface of bottom plate 1, play a supporting role, in the A hoof is installed on the contact surface between the support leg 2 and the ground, which plays an anti-slip effect.

The sliding assembly includes a fixed plate 3 installed on the bottom plate 1, the length of the fixed plate 3 is the same as that of the bottom plate 1, and slide rails 4 are installed on both sides of the fixed plate 3 along the length direction, between a pair of slide rails 4 There is a movement board 5 slidingly connected between them, and an experiment board 12 is installed on the movement board 5. Through the back and forth sliding of the experiment board 12 between a pair of slide rails 4, the battery box placed on the experiment board 12 is driven to move, and the experimental operation is carried out. ;

The lower mold assembly, which is fixedly installed on the test board 12, plays the role of placing the battery box;

Support plate 6, support plate 6 is arranged on the top of base plate 1, and is positioned at the stroke end of slide rail 4, is connected with second support leg 7 between support plate 6 and base plate 1, as the quantity of the second support leg 7 of preferred setting There are four, which are respectively located at the four corners of the lower surface of the support plate 6 to play a supporting role.

The drive assembly, in order to improve the accuracy of the airtightness test, the drive assembly includes a cylinder 8 installed on the support plate 6, the movable end of the cylinder 8 penetrates the support plate 6, and a pressure plate 9 is installed at the end through which the movable end penetrates;

The upper mold assembly is fixedly installed on the lower surface of the pressure plate 9, and the upper mold assembly and the lower mold assembly are tightly fastened by pressing down the pressure plate 9, thereby providing a good experimental environment for the air tightness experiment.

Specifically, referring to Fig. 1, the two ends of the fixed plate 3 along the length direction are equipped with first limit pins 10, which are used to limit the sliding stroke of the moving plate 5 between the slide rails 4 to prevent derailment, and the moving plate 5 is fixed A handle 11 that is convenient for pulling is installed, which is convenient for workers to pull.

Specifically, referring to Fig. 2, there is a water hole 1201 on the test board 12, and a water outlet pipe 13 is installed on the side of the test board 12 close to the support plate 6, and the water hole 1201 is connected with the water outlet pipe 13 through a water channel, which is convenient Fluorescent water is discharged after the experiment is over. Both sides of the upper surface of the experiment board 12 along the length direction are provided with chute seats 1202, and a pair of second stop pins 14 are slidably connected in each chute seat 1202. A spring 15 is connected between the face away from the pin 14 and the chute seat 1202, and a pair of second limit pins 14 are manually clamped to approach each other, and the battery box is placed in the lower wall 16, and the pair of second limit pins 14 are Reset under the effect of spring 15 against the inwall of battery case, play fixing effect.

Specifically, referring to Fig. 2, the lower mold assembly includes a lower enclosure 16, a waterproof ring 17 and a heating plate 18 fixedly installed on the test board 12. In order to improve the sealing performance, the upper surface of the lower enclosure 16 is provided with a The ring groove 1601, the waterproof ring 17 is fixedly installed on the test board 12 in the lower enclosure 16, the height of the waterproof ring 17 is higher than the height of the test board 12, and is suitable for the opening section of the battery box, and is offset against the inner wall of the opening section of the battery box , the heating plate 18 is installed on the test plate 12 in the waterproof ring 17, and is used to heat the air inside the battery box. The air expands with heat and contracts with cold, so that the air pressure difference inside and outside is different.

Specifically, referring to Fig. 1, in order to press the pressing plate 9 vertically downward, the driving assembly also includes a pair of first sleeves 33 installed on the support plate 6, and a pair of first sleeves 33 are slidably connected with guide shafts. 19, which plays a guiding role, the lower end of the guide shaft 19 penetrates the support plate 6, and the end of the guide shaft 19 penetrates and is installed together with the pressure plate 9.

Specifically, please refer to FIG. 3 , the upper mold assembly includes an upper wall 20 fixedly installed with the pressure plate 9 , one side of the upper wall 20 communicates with a water injection port 36 , and the lower surface of the upper wall 20 is provided with a ring and a ring groove. The rubber ring 21 matched with 1601, the rubber ring 21 is pressed into the ring groove 1601, so that a sealed box is formed between the lower wall 16 and the upper wall 20, and a pair of second sleeves 22 are arranged in the upper wall 20, One side of a pair of second sleeves 22 is provided with a rectangular notch 2201, and a rack 23 is coaxially installed in the second sleeves 22. A rotating shaft 25 is rotatably connected between the enclosures 20. One end of the rotating shaft 25 runs through the upper enclosure 20, and a handle 26 is installed at the end of the rotating shaft 25. A pair of gears 27 are coaxially installed on the rotating shaft 25. The gear 27 and the rack 23 meshing connections, turning the handle 26 makes the rotating shaft 25 drive the gear 27 to rotate, and the rotating gear 27 drives the meshing connection of the rack 23 to descend, so that the briquetting block 24 longitudinally presses the battery box to play a fixing role.

Specifically, please refer to Fig. 4, in order to prevent the briquetting block 24 from retracting, a ratchet 34 is installed on the rotating shaft 25, and a support seat 35 is vertically installed on the lower surface of the pressing plate 9, and the supporting seat 35 is inserted and installed between the pressing plate 9, and the supporting seat 35 A ratchet 28 is arranged on it, and the ratchet 28 is offset against the ratchet 34. After the test is over, the support seat 35 is pulled upwards to make the ratchet 28 break away from the ratchet 34, and the rack 23 is reset.

Specifically, please refer to Fig. 1 and Fig. 5, the water outlet pipe 13 is connected with a water tank 29 through a hose, the water in the water tank 29 is filled with fluorescent powder, the water tank 29 is connected with the water injection port 36 through a hose, and the water tank 29 is connected with the water injection port 36 A water pump 30 is installed on the hose, a water valve 37 is installed on the hose, an L-shaped conduit 31 is installed on the lower enclosure 16, and the L-shaped conduit 31 is connected to the inside of the lower enclosure 16, and the vertical section of the L-shaped conduit 31 A diversion bottle 32 is connected, and when the internal air of the battery case is cooled, the fluorescent water in the diversion bottle 32 is sucked into the sealed box, and the position of poor sealing is determined by whether the fluorescent water seeps in.

Specifically, a method for a battery air tightness detection device includes the following steps:

S1: Manually clamp a pair of second limit pins 14 close to each other, place the battery box in the lower panel 16, and the pair of second limit pins 14 reset against the inner wall of the battery box under the action of the spring 15. At this time The waterproof ring 17 and the heating plate 18 are located inside the battery box;

S2: Manually push the movement plate 5 to the bottom of the support plate 6, the cylinder 8 drives the upper wall 20 to press down, and the rubber ring 21 is pressed into the ring groove 1601, so that a sealed box is formed between the lower wall 16 and the upper wall 20, Turn the handle 26 to make the rotating shaft 25 drive the gear 27 to rotate, and the rotating gear 27 drives the meshed rack 23 to descend, so that the pressing block 24 longitudinally presses the battery box;

S3: Phosphor powder is added to the water in the water tank 29, the heating plate 18 heats the air inside the battery box, the water injection port 36 injects water inward, the fluorescent water fills the diversion bottle 32 and forms a seal between the lower enclosure 16 and the upper enclosure 20 In the box, close the water valve 37 on the hose, and wait for the internal air of the battery box to cool down, and the fluorescent water in the diversion bottle 32 will be sucked into the sealed box, and whether the fluorescent water is infiltrated to determine the position of poor sealing.

working principle:

Manually clamp a pair of second limit pins 14 close to each other, place the battery box in the lower panel 16, and the pair of second limit pins 14 are reset against the inner wall of the battery box under the action of the spring 15, at this time the waterproof ring 17 and the heating plate 18 are located inside the battery box, the heating plate 18 is energized, the heating plate 18 heats the air inside the battery box, and the moving plate 5 is manually pushed to the bottom of the supporting plate 6, and the cylinder 8 drives the upper enclosure 20 to press down, The rubber ring 21 is pressed into the ring groove 1601, so that a sealed box is formed between the lower panel 16 and the upper panel 20, and the handle 26 is turned to make the rotating shaft 25 drive the gear 27 to rotate, and the rotating gear 27 drives the meshingly connected rack 23 to descend , so that the briquetting block 24 longitudinally presses the battery box to form a closed space inside the battery box and improve the accuracy of the experiment. Since the water in the water tank 29 is added with fluorescent powder, the water injection port 36 is injected with water through the water pump 30, and the fluorescent water is filled with the guide. The flow bottle 32 and the lower wall 16 and the upper wall 20 form a sealed box, close the water valve 37 on the hose, and wait for the internal air of the battery box to cool, and the fluorescent water in the diversion bottle 32 is sucked into the sealed box. Whether the fluorescent water seeps in to determine the location of the poor seal.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still It is possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present invention shall be included in the within the protection scope of the present invention.

Claims (5)

1. A battery air tightness detection device, characterized by comprising:

the device comprises a bottom plate (1), wherein a first supporting leg (2) is arranged on the lower surface of the bottom plate (1);

the sliding assembly comprises a fixed plate (3) arranged on a bottom plate (1), sliding rails (4) are arranged on two sides of the fixed plate (3) along the length direction, a moving plate (5) is connected between a pair of the sliding rails (4) in a sliding manner, and an experiment plate (12) is arranged on the moving plate (5);

a lower die assembly fixedly mounted on the experimental plate (12);

the support plate (6) is arranged above the bottom plate (1) and is positioned at the stroke end of the sliding rail (4), and a second support leg (7) is connected between the support plate (6) and the bottom plate (1);

the driving assembly comprises an air cylinder (8) arranged on the supporting plate (6), the movable end of the air cylinder (8) penetrates out of the supporting plate (6), and a pressing plate (9) is arranged at the penetrating end of the movable end;

the upper die assembly is fixedly arranged on the lower surface of the pressing plate (9);

the experimental plate (12) is provided with water through holes (1201), one side of the experimental plate (12) close to the supporting plate (6) is provided with a water outlet pipe (13), the water through holes (1201) are communicated with the water outlet pipe (13) through a water channel, both sides of the upper surface of the experimental plate (12) along the length direction are provided with chute seats (1202), each chute seat (1202) is slidably connected with a pair of second limiting pins (14), and a spring (15) is connected between the deviating surface of each second limiting pin (14) and each chute seat (1202);

the lower die assembly comprises a lower coaming (16), a waterproof ring (17) and a heating plate (18) which are fixedly arranged on the experimental plate (12), a circle of groove (1601) is formed in the upper surface of the lower coaming (16) along the circumferential direction, the waterproof ring (17) is fixedly arranged on the experimental plate (12) in the lower coaming (16), and the heating plate (18) is arranged on the experimental plate (12) in the waterproof ring (17);

the upper die assembly comprises an upper surrounding plate (20) fixedly installed together with a pressing plate (9), a water injection port (36) is communicated with one side of the upper surrounding plate (20), a circle of rubber ring (21) matched with a ring groove (1601) is arranged on the lower surface of the upper surrounding plate (20), a pair of second sleeves (22) are arranged in the upper surrounding plate (20), rectangular notches (2201) are formed in one sides of the pair of second sleeves (22), racks (23) are coaxially installed in the second sleeves (22), pressing blocks (24) are installed at the lower ends of the racks (23) penetrating out of the second sleeves (22), a rotating shaft (25) is connected between the upper surrounding plate (20), one end of the rotating shaft (25) penetrates out of the upper surrounding plate (20), a handle (26) is installed at one end penetrating out of the rotating shaft (25), a pair of gears (27) are coaxially installed on the rotating shaft (25), and the gears (27) are meshed with the racks (23);

the water outlet pipe (13) is connected with a water tank (29) through a hose, the water tank (29) is connected with a water injection port (36) through a hose, a water pump (30) is installed on the hose connected with the water injection port (36), water valves (37) are installed on the hose, an L-shaped guide pipe (31) is installed on the lower coaming (16), the L-shaped guide pipe (31) is in a communicating state with the inside of the lower coaming (16), and a guide bottle (32) is connected to the vertical section of the L-shaped guide pipe (31).

2. The battery air tightness detection device according to claim 1, wherein: the fixed plate (3) is provided with first limiting pins (10) along two ends of the length direction, and the moving plate (5) is fixedly provided with a handle (11) which is convenient to pull.

3. The battery air tightness detection device according to claim 1, wherein: the driving assembly further comprises a pair of first sleeves (33) arranged on the supporting plate (6), a pair of guide shafts (19) are connected in a sliding mode in the first sleeves (33), the lower ends of the guide shafts (19) penetrate out of the supporting plate (6), and one ends of the guide shafts (19) penetrating out are jointly arranged with the pressing plate (9).

4. The battery air tightness detection device according to claim 1, wherein: the ratchet wheel (34) is arranged on the rotating shaft (25), the supporting seat (35) is vertically arranged on the lower surface of the pressing plate (9), the pawl (28) is arranged on the supporting seat (35), and the pawl (28) abuts against the ratchet wheel (34).

5. A method of the battery air tightness detection device according to claim 1, comprising the steps of:

s1: manually clamping a pair of second limiting pins (14) to be close to each other, placing the storage battery box in the lower coaming (16), resetting the pair of second limiting pins (14) against the inner wall of the storage battery box under the action of a spring (15), and positioning a waterproof ring (17) and a heating plate (18) in the storage battery box;

s2: the motion plate (5) is manually pushed to the lower part of the supporting plate (6), the cylinder (8) drives the upper coaming (20) to be pressed down, the rubber ring (21) is pressed into the ring groove (1601), a sealing box body is formed between the lower coaming (16) and the upper coaming (20), the rotating handle (26) drives the rotating shaft (25) to drive the gear (27) to rotate, and the rotating gear (27) drives the engaged and connected rack (23) to descend, so that the pressing block (24) longitudinally presses the storage battery box;

s3: the fluorescent powder is added to water in the water tank (29), the heating plate (18) heats the internal air of the storage battery box, the water filling port (36) is filled with water, the fluorescent water is filled in the guide bottle (32) and the sealing box body formed between the lower coaming (16) and the upper coaming (20), the water valve (37) on the hose is closed, the fluorescent water in the guide bottle (32) is sucked into the sealing box body after the internal air of the storage battery box is cooled, and the position of poor sealing is determined by whether the fluorescent water is permeated.