CN117723220A - Battery seal air tightness detection device and detection method thereof - Google Patents

Abstract

The invention relates to the technical field of battery detection equipment, in particular to a battery seal air tightness detection device and a detection method thereof, wherein the battery seal air tightness detection device comprises a detection table, a battery fixing seat, a battery clamping block and a detection piece; the battery fixing seat is arranged on the detection table; the battery clamping block is movably arranged on the detection table and is suitable for being switched between a clamping position and a loosening position. The battery fixing seat and the battery clamping block are used for fixing the battery, the bottom of the battery is perforated, the top cap is filled with detection liquid, detection gas is introduced from the hole at the bottom of the battery, whether bubbles are generated at the sealing position at the top of the battery or not is observed, the battery sealing air tightness detection device does not need to be placed in water for battery air tightness detection, the battery is clamped and fixed conveniently, the air tightness detection speed is high, the structure is simple, the operation is convenient, the production cost is saved, the installation and the use are convenient, and whether the battery leaks air can be judged more conveniently, rapidly and accurately.

Description

Battery seal air tightness detection device and detection method thereof

Technical Field

The invention relates to the technical field of battery detection equipment, in particular to a device and a method for detecting the air tightness of a battery seal.

Background

The service life of the battery is related to the air tightness of the battery, when the air tightness of the battery is poor, air is easy to permeate into the battery, materials in the battery are affected by moisture in the air, the electric quantity of the battery is easy to reduce, and the battery is damaged when serious, so that the air tightness of the battery is often required to be detected after the battery is sealed in the production process of the battery.

The prior battery air tightness detection is generally carried out by drilling holes on the side wall of the battery after sealing, and the holes on the side wall of the battery are opposite to the air inlets on the fixed tool, and the air inlets on the fixed tool are communicated with the air tank. And placing the battery and the fixed tool in water, opening an air inlet valve to enable nitrogen or compressed air to be injected into the battery through an air inlet pipe, maintaining the pressure for a period of time after the pressure reaches a specified pressure value of the battery, and observing whether bubbles are generated at a sealing part of the battery in water so as to determine whether air leakage exists after the battery is sealed.

In the existing battery air tightness detection process, holes are needed to be formed in the side wall of the battery, the side wall of the battery is cylindrical, the processing requirement on the tool is high, and if the bonding is not tight, air leakage is easily caused; in addition, in the detection process, the detected battery and the tool are required to be placed in water, and if tiny air leakage exists at the battery sealing position, the generated tiny air bubbles are not easy to find, so that misjudgment is easy to cause.

Disclosure of Invention

The invention provides a device and a method for detecting the air tightness of a battery seal, which are used for solving the defects that in the existing process of detecting the air tightness of the battery, a tool is not tightly attached to the battery, and air leakage is easy to occur, and solving the defect that the underwater detection of the battery is easy to cause misjudgment due to the fact that air bubbles are small, so that the device and the method for detecting the air tightness of the battery seal are more convenient, rapid and accurate to realize whether the battery seal leaks or not.

The invention provides a battery seal air tightness detection device, which comprises:

a detection table;

the battery fixing seat is arranged on the detection table;

the battery clamping block is movably arranged on the detection table and is suitable for being switched between a clamping position and a loosening position; in the clamping position, the battery clamping block is matched with the battery fixing seat to clamp the battery to be tested; in the released position, the battery clamping block is away from the battery holder;

the detection piece comprises an air source component, wherein the air source component provides detection gas through a pipeline, and the detection gas is used for inflating a battery to be detected.

According to the battery seal air tightness detection device provided by the invention, the battery clamping block comprises:

a rotating assembly hinged to the detection table;

and the clamping piece is connected with the end part of the rotating assembly and is suitable for being switched between the clamping position and the loosening position under the driving of the rotating assembly.

According to the invention, the battery seal tightness detection device comprises:

one end of the handle is hinged to the detection table;

the first end of the support piece is connected to the middle part of the handle;

the connecting piece is arranged at the second end of the supporting piece in a penetrating mode, and the clamping piece is connected to the end portion, close to the battery fixing seat, of the connecting piece.

According to the battery seal air tightness detection device provided by the invention, the connecting piece comprises the connecting rod penetrating through the end part of the supporting piece, and the gasket and the fastening bolt are sleeved at the position of the connecting rod penetrating through the end part of the supporting piece.

According to the battery seal air tightness detection device provided by the invention, the detection table is provided with the detection hole, the detection hole is positioned between the battery fixing seat and the battery clamping block, one side of the detection table, which is away from the battery fixing seat, is provided with the sealing column, and the end part of the sealing column penetrates through the detection hole;

an air inlet channel is arranged in the sealing column, an air inlet is arranged on the side wall of the sealing column, an air outlet is arranged on the end part, close to the battery fixing seat, of the sealing column, and the air inlet channel is communicated with the air inlet and the air outlet.

According to the battery seal tightness detection device provided by the invention, the sealing ring is arranged at the end part of the sealing column, where the air outlet is arranged; the air inlet is provided with an air inlet valve, and the air source component is communicated with the air inlet valve through a pipeline.

According to the battery sealing air tightness detection device provided by the invention, the device further comprises a fixed table and a jacking structure, wherein the detection table is fixed on the fixed table, the fixed table is provided with an installation through hole, the jacking structure is penetrated in the installation through hole, and the end part of the sealing column, which is away from the battery fixing seat, is contacted with the jacking structure.

According to the battery seal air tightness detection device provided by the invention, one side of the detection table, which is away from the battery fixing seat, is provided with the first guide ring, and the sealing column is movably arranged on the first guide ring in a penetrating manner;

the installation through hole is kept away from one side of detecting the platform is provided with the second guide ring, the jacking structure wears to locate the second guide ring.

According to the battery seal air tightness detection device provided by the invention, the jacking structure comprises the jacking screw rod and the rotary wheel disc, the inner annular wall of the second guide ring is provided with threads, the first end of the jacking screw rod is arranged on the second guide ring in a penetrating manner, and the rotary wheel disc is connected with the second end of the jacking screw rod.

The invention also provides a battery seal air tightness detection method, which is suitable for the battery seal air tightness detection device of any one of the above, and comprises the following steps:

s1, placing a battery to be tested on a battery fixing seat;

s2, adjusting the battery clamping block to enable the battery clamping block to be close to the battery fixing seat, and clamping the battery to be tested;

s3, injecting liquid for detection into a cap at the top of the battery to be detected by using a needle tube, and enabling the liquid to cover a seal of the battery to be detected;

s4, utilizing an air source component of the detection piece to flow detection air into the battery to be detected from an opening at the bottom of the battery to be detected through a pipeline, and observing whether bubbles appear at a top sealing position of the battery to be detected;

s5, adjusting the output pressure of the air source component to gradually increase the pressure of air filled into the battery to be tested;

and S6, when the output pressure of the air source component reaches a preset maximum value, standing for 2 minutes, and continuously observing whether bubbles appear at the top sealing position of the battery to be tested.

According to the battery seal air tightness detection device and the detection method thereof, the battery to be detected is fixed at the detection hole of the detection table through the battery fixing seat and the battery clamping block, the bottom of the battery to be detected is perforated, alcohol or water is injected into the top cap to be used as detection liquid, detection gas is introduced from the bottom hole of the battery to be detected through the gas source component of the detection piece, and whether bubbles are generated at the seal position at the top of the battery to be detected is observed. The battery to be detected is sealed upwards through the battery fixing seat and the battery clamping block, so that tiny bubbles at the sealed part can be conveniently observed, and the air tightness detection precision is improved; the device for detecting the air tightness of the battery seal does not need to be placed in water for detection, is convenient for clamping and fixing the battery, has high air tightness detection speed, simple structure and convenient operation, saves production cost, is convenient for installation and use, and can more conveniently, rapidly and accurately judge whether the battery leaks air or not.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a battery seal tightness detection device provided by the invention;

fig. 2 is a front view of the battery seal tightness detection device provided by the invention;

FIG. 3 is a schematic view in section A-A of FIG. 2;

fig. 4 is an enlarged schematic view of the section I of fig. 3.

Reference numerals:

1. a detection table; 11. a detection hole; 12. a first guide ring; 2. a battery holder; 3. a battery clamping block; 31. a rotating assembly; 311. a handle; 312. a support; 313. a connecting piece; 3131. a connecting rod; 3132. a gasket; 3133. a fastening bolt; 32. a clamping member; 4. a battery to be tested; 41. capping; 5. a sealing column; 51. an air intake passage; 52. an air inlet; 53. an air outlet; 54. a seal ring; 55. an intake valve; 6. a fixed table; 61. mounting through holes; 62. a second guide ring; 7. a jacking structure; 71. jacking a screw; 72. rotating the wheel disc; 8. a base; 9. a support back plate; 10. high-permeability acrylic plate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The battery seal tightness detection device and the detection method thereof according to the present invention are described below with reference to fig. 1 to 4.

An embodiment of the invention provides a battery seal air tightness detection device, which is shown in fig. 1 and 4, and comprises a detection table 1, a battery fixing seat 2, a battery clamping block 3 and a detection piece, wherein the battery fixing seat 2 is arranged on the detection table 1; the battery clamping block 3 is movably arranged on the detection table 1, and the battery clamping block 3 is suitable for being switched between a clamping position and a loosening position; in the clamping position, the battery clamping block 3 is matched with the battery fixing seat 2 to clamp the battery 4 to be tested; in the released position, the battery clamping block 3 is away from the battery holder 2; the detecting member includes an air source part that supplies a detecting gas for inflating the battery 4 to be detected through a pipeline.

The structure of the battery seal air tightness detection device of the embodiment can be used for directly detecting the air tightness of the seal of the battery 4 to be detected without being placed in water for detection. Specifically, the battery 4 to be measured is fixed on the test table 1 through the battery fixing seat 2 and the battery clamping block 3, the bottom of the battery 4 to be measured is perforated, alcohol or water is injected into the cap 41 at the top to be measured to be used as test liquid, test gas is introduced from the hole at the bottom of the battery 4 to be measured through the gas source component of the test piece, whether bubbles are generated at the seal position at the top of the battery 4 to be measured is observed, if no bubbles are generated, the air tightness of the seal of the battery 4 to be measured is good, and if bubbles are generated, the air tightness of the seal of the battery 4 to be measured is bad.

It can be appreciated that in the structure of this embodiment, due to the adoption of the fixing scheme of the battery 4 to be tested with the seal up, the appearance of the tiny bubbles at the seal can be observed conveniently, and the accuracy of the air tightness detection is improved. The device can be used for clamping batteries with various shapes, the shape of the clamping part of the battery fixing seat 2 and the battery clamping block 3 is selected according to the shape of the battery, a cylindrical battery is taken as an example, a semicircular or arc-shaped mounting groove is formed in the battery fixing seat 2, a corresponding mounting groove is also formed in the plane of the battery clamping block 3 facing the battery fixing seat 2, and perfect clamping of the cylindrical battery is realized through the mounting grooves of the battery fixing seat 2 and the battery clamping block 3. The battery seal air tightness detection device of the embodiment is convenient to fix, fast in air tightness detection speed, simple in structure and convenient to operate, production cost is saved, installation and use are convenient, and whether the battery leaks air can be judged more conveniently, rapidly and accurately.

Based on the structure of the above-described embodiment, the battery clamping block 3 is adapted to be switched between the clamping position and the unclamping position; in the clamping position, the battery clamping block 3 is close to the battery fixing seat 2 to clamp the battery 4 to be tested; in the released position, the battery clamping block 3 is remote from the battery holder 2. In some embodiments of the battery seal tightness detection device provided by the invention, as shown in fig. 1 and 2, the battery clamping block 3 comprises a rotating assembly 31 and a clamping piece 32, wherein the rotating assembly 31 is hinged to the detection table 1 and is suitable for rotating along a hinging point; the clamping member 32 is connected to the end of the rotating assembly 31 and is adapted to be switched between a clamping position and a releasing position by the driving of the rotating assembly 31.

The structure of the battery clamping block 3 in this embodiment is that the battery clamping block is close to and far away from the battery fixing seat 2 in a rotating manner, see fig. 1, the rotating assembly 31 is hinged to the side portion of the detection table 1, the clamping piece 32 is rotated around the hinge point through the rotation of the rotating assembly 31, when the battery is required to be clamped, the clamping piece 32 is rotated to a position close to and parallel to the battery fixing seat 2, the battery is clamped and fixed through the clamping piece 32 and the battery fixing seat 2, and after the detection is completed, the clamping piece 32 is rotated away, so that the battery can be taken out.

Specifically, the rotating assembly 31 includes a handle 311, a support 312 and a connector 313, and one end of the handle 311 is hinged to the detection table 1; a first end of the support 312 is connected to a middle portion of the handle 311; the connecting piece 313 is arranged at the second end of the supporting piece 312 in a penetrating way, and the clamping piece 32 is connected to the end part of the connecting piece 313, which is close to the battery fixing seat 2.

Referring to fig. 2, the handle 311 is pressed down, the handle 311 rotates clockwise around the hinge point with the detection table 1, and drives the supporting member 312 and the connecting member 313 to rotate clockwise, so that the clamping member 32 is far away from the battery fixing seat 2, and the battery 4 to be detected is loosened; similarly, the handle 311 is lifted, and the handle 311 rotates anticlockwise around the hinge point with the detection table 1, so that the supporting member 312 and the connecting member 313 are driven to rotate anticlockwise, and then the clamping member 32 approaches the battery fixing seat 2 to clamp the battery 4 to be detected.

Because the specifications of the batteries are various, when the batteries with different sizes are clamped, the battery fixing seat 2 and the battery clamping block 3 are ensured to adapt to the different sizes of the batteries to realize clamping, and the battery fixing seat 2 is fixed, and the hinge point of the battery clamping block 3 and the detection table 1 is also fixed, so that the battery clamping block 3 can be designed into a structure with adjustable distance, in some examples, the connecting piece 313 comprises a connecting rod 3131 penetrating through the end part of the supporting piece 312, and the position of the connecting rod 3131 penetrating through the end part of the supporting piece 312 is sleeved with a gasket 3132 and a fastening bolt 3133.

For batteries with different sizes, the distance between the battery clamping block 3 and the battery fixing seat 2 can be adjusted by adjusting the connection positions of the connecting piece 313 and the supporting piece 312, and referring to fig. 2 again, the position shown in fig. 2 is a structure in which a cylindrical battery is clamped, when a cylindrical battery with a larger diameter is required to be clamped, the fastening bolts 3133 on two sides of the supporting piece 312 are required to be adjusted, the fastening bolts 3133 are unscrewed, the connecting rod 3131 is moved rightwards, and then the clamping piece 32 is driven to move rightwards, so that the distance between the battery clamping block 3 and the battery fixing seat 2 is increased to adapt to the battery with a larger size, after the position of the connecting rod 3131 is adjusted, the fastening bolts 3133 are screwed, and the whole structure is fixed, so that subsequent clamping operation can be performed.

In the air tightness detection process of the battery 4 to be detected, the tightness of the detection part in the restarting process of the battery 4 to be detected is ensured. In some embodiments, a detection hole 11 is formed in the detection table 1, the detection hole 11 is located between the battery fixing seat 2 and the battery clamping block 3, a sealing column 5 is arranged on one side, away from the battery fixing seat 2, of the detection table 1, and the end part of the sealing column 5 penetrates through the detection hole 11; an air inlet channel 51 is arranged in the sealing column 5, an air inlet 52 is arranged on the side wall of the sealing column 5, an air outlet 53 is arranged at the end part of the sealing column 5, which is close to the battery fixing seat 2, and the air inlet channel 51 is communicated with the air inlet 52 and the air outlet 53.

Referring to fig. 3 and 4, after the clamping of the battery 4 to be tested is completed, the sealing post 5 is moved upwards, the sealing post 5 is abutted to the bottom shell of the battery 4 to be tested, the opening hole at the bottom of the battery 4 to be tested is communicated with the air outlet 53 of the sealing post 5, the upper end face of the sealing post 5 forms a seal against the communicated part, the air source component of the detection component is communicated with the air inlet 52 through a pipeline, and the air provided by the air source component sequentially passes through the air inlet 52, the air inlet channel 51 and the air outlet 53 and then enters the hole formed in the bottom of the battery 4 to be tested, so that the inside of the battery 4 to be tested is inflated and pressurized.

Further, a sealing ring 54 is installed at the end part of the sealing column 5 where the air outlet 53 is provided, as shown in fig. 4, the sealing ring 54 on the upper end surface of the sealing column 5 forms an effective seal between the bottom of the battery 4 to be tested and the sealing column 5, and the sealing in the battery charging process is ensured. The air inlet 52 is provided with an air inlet valve 55, the air source component is communicated with the air inlet valve 55 through a pipeline, and the on-off and the guiding of an air path can be controlled through the air inlet valve 55.

In order to facilitate effective sealing of the bottom of the battery 4 to be tested by the sealing post 5, in some embodiments, the detection platform 1 is fixed on the fixing platform 6, the fixing platform 6 is provided with a mounting through hole 61, the mounting through hole 61 is internally provided with a jacking structure 7 in a penetrating manner, and the end part of the sealing post 5, which is away from the battery fixing seat 2, is contacted with the jacking structure 7. The opening of the detection hole 11 far away from the battery fixing seat 2 is provided with a first guide ring 12, and the end part of the sealing column 5 close to the detection hole 11 is movably arranged on the first guide ring 12; the mounting through hole 61 is provided with the second guide ring 62 far away from the drill way of detecting platform 1, and jacking structure 7 wears to locate the second guide ring 62. The jacking structure 7 comprises a jacking screw 71 and a rotary wheel disc 72, threads are arranged on the inner annular wall of the second guide ring 62, the first end of the jacking screw 71 penetrates through the second guide ring 62, and the rotary wheel disc 72 is connected to the second end of the jacking screw 71.

As shown in fig. 3 and 4, the sealing post 5 is located between the table top of the detection table 1 and the table top of the fixed table 6, the upper end of the sealing post 5 is movably arranged in the first guide ring 12, the lower end of the sealing post abuts against the jacking screw 71 of the jacking structure 7, the jacking screw 71 is driven to rotate by rotating the rotating wheel disc 72, so that the jacking screw 71 can ascend and descend in the second guide ring 62, when the sealing is required, the rotating wheel disc 72 rotates to enable the jacking screw 71 to ascend in the second guide ring 62, the end part of the ascending jacking screw 71 abuts against the sealing post 5, then the sealing post 5 is pushed to ascend in the first guide ring 12, the sealing post 5 abuts against the bottom of the battery 4 to be detected after passing through the detection hole 11, the rotating wheel disc 72 is continuously rotated, so that the sealing post 5 and the bottom of the battery 4 to be detected generate abutting pressure with each other, and at the moment, the sealing ring 54 at the upper end of the sealing post 5 forms effective sealing between the bottom of the battery 4 to be detected and the upper end surface of the sealing post 5.

The battery seal air tightness detection device also comprises a base 8, a supporting backboard 9 and a high-permeability acrylic plate 10, wherein the fixed table 6 is fixed on the base 8, the high-permeability acrylic plate 10 is supported by the supporting backboard 9 and is positioned above the detection table 1, in the process of detecting the air tightness of the battery 4 to be detected, a fixing scheme with an upward seal is adopted, whether tiny bubbles appear at the seal can be conveniently observed through the high-permeability acrylic plate 10, and the air tightness detection precision is improved. In addition, the structure formed by the base 8, the supporting backboard 9 and the high-transmittance acrylic plate 10 can also form a protection cover mechanism, so that the injury to an observer caused by accidents in the battery inflation process can be prevented.

The method for detecting the air tightness of the battery seal provided by the invention is described below, and the method for detecting the air tightness of the battery seal described below and the device for detecting the air tightness of the battery seal described above can be correspondingly referred to each other.

An embodiment of the present invention provides a method for detecting air tightness of a battery seal, which is suitable for detecting air tightness of a battery 4 to be tested by the following steps after punching a hole at the center of a bottom shell of the battery 4 to be tested:

s1, placing a battery 4 to be tested on a battery fixing seat 2, and enabling the bottom of the battery 4 to be tested to be positioned in a detection hole 11 on a detection table 1;

s2, adjusting the battery clamping block 3 to enable the battery clamping block 3 to be close to the battery fixing seat 2, and clamping the battery 4 to be tested; specifically, the handle 311 is lifted, the handle 311 rotates anticlockwise around the hinge point with the detection table 1, and drives the supporting piece 312 and the connecting piece 313 to rotate anticlockwise, so that the clamping piece 32 is close to the battery fixing seat 2, and the battery 4 to be detected is clamped;

s3, injecting liquid for detection into the cap 41 at the top of the battery 4 to be detected by using a needle tube, and enabling the liquid to cover the seal of the battery 4 to be detected, wherein the liquid for detection can be alcohol or water;

s4, utilizing an air source component of the detection piece to flow detection air into the battery 4 to be detected from an opening at the bottom of the battery 4 to be detected through a pipeline, and simultaneously observing whether bubbles appear at the top sealing position of the battery 4 to be detected; specifically, the air source component may use a nitrogen tank, the nitrogen tank outputs nitrogen gas, the nitrogen gas enters the air inlet 52 of the sealing column 5 through the air inlet valve 55, the nitrogen gas entering the air inlet 52 is discharged through the air outlet 53 through the air inlet channel 51, then enters the opening at the bottom of the battery 4 to be tested, flows into the battery 4 to be tested, the nitrogen gas is pressurized in the battery 4 to be tested, and whether bubbles appear at the top sealing position of the battery 4 to be tested can be observed at the moment;

s5, adjusting the output pressure of the air source component to gradually increase the pressure of air filled into the battery 4 to be measured, and continuously observing whether bubbles appear at the top sealing position of the battery 4 to be measured in the pressure adjusting process;

s6, when the output pressure of the air source component reaches a preset maximum value, standing for 2 minutes, and continuously observing whether bubbles appear at the top sealing position of the battery 4 to be tested;

in the process of filling the nitrogen gas into the bottom of the battery to be tested 4, if no air bubble is generated at the top sealing position of the battery to be tested 4, the air tightness of the sealing of the battery to be tested 4 is good, and if the air bubble is generated at the top sealing position of the battery to be tested 4, the air tightness of the sealing of the battery to be tested 4 is bad.

Further, before the step S4 is performed, the air path sealing needs to be performed, specifically, the rotating wheel disc 72 is rotated to enable the jacking screw 71 to ascend in the second guide ring 62, the end portion of the ascending jacking screw 71 abuts against the sealing post 5, then the sealing post 5 is pushed to ascend, the sealing post 5 ascends in the first guide ring 12, passes through the detection hole 11 and abuts against the bottom of the battery 4 to be tested, the rotating wheel disc 72 is continuously rotated to enable the sealing post 5 and the bottom of the battery 4 to be tested to generate abutting pressure with each other, and at this time, the sealing ring 54 at the upper end of the sealing post 5 forms effective sealing between the bottom of the battery 4 to be tested and the upper end face of the sealing post 5.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a battery seals gas tightness detection device which characterized in that includes:

a detection table (1);

the battery fixing seat (2) is arranged on the detection table (1);

a battery clamping block (3) movably arranged on the detection table (1), wherein the battery clamping block (3) is suitable for being switched between a clamping position and a loosening position; in the clamping position, the battery clamping block (3) is matched with the battery fixing seat (2) to clamp the battery (4) to be tested; in the release position, the battery clamping block (3) is far away from the battery fixing seat (2);

the detection piece comprises an air source component, the air source component provides detection gas through a pipeline, and the detection gas is used for inflating a battery (4) to be detected.

2. The battery seal tightness detection device according to claim 1, wherein the battery clamping block (3) comprises:

a rotating assembly (31) hinged to the detection table (1);

and the clamping piece (32) is connected with the end part of the rotating assembly (31) and is suitable for being switched between the clamping position and the loosening position under the driving of the rotating assembly (31).

3. The battery seal tightness detection device according to claim 2, wherein the rotating assembly (31) comprises:

a handle (311), wherein one end of the handle (311) is hinged with the detection table (1);

-a support (312), a first end of the support (312) being connected to a middle portion of the handle (311);

the connecting piece (313), the connecting piece (313) wears to locate the second end of support piece (312), clamping piece (32) connect in connecting piece (313) be close to the tip of battery fixing base (2).

4. A battery seal tightness detection device according to claim 3, wherein the connecting member (313) comprises a connecting rod (3131) penetrating through the end of the supporting member (312), and a gasket (3132) and a fastening bolt (3133) are sleeved at the position where the connecting rod (3131) penetrates through the end of the supporting member (312).

5. The battery seal air tightness detection device according to claim 1, wherein a detection hole (11) is formed in the detection table (1), the detection hole (11) is located between the battery fixing seat (2) and the battery clamping block (3), a sealing column (5) is arranged on one side, away from the battery fixing seat (2), of the detection table (1), and the end portion of the sealing column (5) penetrates through the detection hole (11);

an air inlet channel (51) is arranged in the sealing column (5), an air inlet (52) is formed in the side wall of the sealing column (5), an air outlet (53) is formed in the end portion, close to the battery fixing seat (2), of the sealing column (5), and the air inlet channel (51) is communicated with the air inlet (52) and the air outlet (53).

6. The battery seal tightness detection device according to claim 5, wherein a seal ring (54) is mounted at an end of the seal column (5) where the air outlet (53) is provided; the air inlet (52) is provided with an air inlet valve (55), and the air source component is communicated with the air inlet valve (55) through a pipeline.

7. The battery seal air tightness detection device according to claim 5, further comprising a fixing table (6) and a jacking structure (7), wherein the detection table (1) is fixed on the fixing table (6), a mounting through hole (61) is formed in the fixing table (6), the jacking structure (7) is arranged in the mounting through hole (61) in a penetrating mode, and the end portion, deviating from the battery fixing seat (2), of the sealing column (5) is contacted with the jacking structure (7).

8. The battery seal tightness detection device according to claim 7, wherein a first guide ring (12) is arranged on one side of the detection table (1) away from the battery fixing seat (2), and the sealing column (5) movably penetrates through the first guide ring (12);

the side of the installation through hole (61) far away from the detection table (1) is provided with a second guide ring (62), and the jacking structure (7) penetrates through the second guide ring (62).

9. The battery seal tightness detection device according to claim 8, wherein the jacking structure (7) comprises a jacking screw (71) and a rotary wheel disc (72), threads are arranged on the inner annular wall of the second guide ring (62), the first end of the jacking screw (71) penetrates through the second guide ring (62), and the rotary wheel disc (72) is connected to the second end of the jacking screw (71).

10. A battery seal air tightness detection method, characterized in that it is applied to the battery seal air tightness detection device according to any of claims 1 to 9, comprising:

s1, placing a battery (4) to be tested on a battery fixing seat (2);

s2, adjusting the battery clamping block (3) to enable the battery clamping block (3) to be close to the battery fixing seat (2) and clamping the battery (4) to be tested;

s3, injecting liquid for detection into a cap (41) at the top of the battery (4) to be detected by using a needle tube, and enabling the liquid to cover the seal of the battery (4) to be detected;

s4, utilizing an air source component of the detection piece to enable detection air to flow into the battery (4) to be detected from an opening at the bottom of the battery (4) to be detected through a pipeline, and observing whether bubbles appear at a seal position at the top of the battery (4) to be detected;

s5, adjusting the output pressure of the air source component to gradually increase the pressure of air filled into the battery (4) to be tested;

and S6, when the output pressure of the air source component reaches a preset maximum value, standing for 2 minutes, and continuously observing whether bubbles appear at the top sealing position of the battery (4) to be tested.