CN218937656U - Battery inner chamber gas tightness detection device - Google Patents

Abstract

The utility model relates to a battery cavity air tightness detection device in the technical field of battery production, which comprises a detection box with an inner cavity capable of accommodating a battery to be detected, wherein an inflation inlet is formed in one side wall of the detection box, a movable block capable of being far away from or close to the inflation inlet is arranged in the inner cavity of the detection box, the movable block divides the inner cavity of the detection box into two chambers, the chamber with the inflation inlet is a containing chamber for accommodating the battery to be detected, the containing chamber is a closed chamber, and a pushing structure capable of elastically pushing the movable block to move towards the direction close to the inflation inlet is arranged in the other chamber. According to the utility model, no gas is required to be filled into the inner cavity of the battery to be detected, and the external air pressure of the battery to be detected is larger than the internal air pressure of the battery to be detected, so that the battery cover of the battery to be detected has a trend of further tightening, and the technical problem that the battery cover is easy to be pushed open under the action of the air pressure to damage the tightness of the battery pack and cause detection failure in the prior art is solved.

Description

Battery inner chamber gas tightness detection device

Technical Field

The utility model relates to the technical field of battery production, in particular to a device for detecting the air tightness of a battery cavity.

Background

The battery is required to be subjected to airtight detection on the inner cavity after production so as to ensure that the battery has a good sealing effect.

However, the existing battery air tightness detection device mainly comprises two types, one type is to charge a certain pressure gas into the inner cavity of the battery, and detect the change of the air pressure value of the inner cavity of the battery after maintaining the pressure for a period of time; another is to fill a certain pressure gas into the inner cavity of the battery, then immerse the battery in water to see if bubbles are generated; both of the above devices suffer from the following drawbacks: 1. the inner cavity of the battery is required to have certain air pressure, and the battery cover is easy to be jacked up under the action of the air pressure, so that the tightness of the battery pack is damaged, and the detection is failed; 2. before and after the battery cavity is inflated and deflated, the inflation head is required to be connected with the battery air inlet, so that the operation is complicated.

To this end, we provide a battery cavity air tightness detection device that does not require the charging of the battery cavity with air.

Disclosure of Invention

The utility model aims to solve the problems and provide a device for detecting the air tightness of a battery cavity.

The utility model realizes the above purpose through the following technical scheme:

the utility model provides a battery inner chamber gas tightness detection device, includes that the inner chamber can place the detection case of battery that awaits measuring, detection case lateral wall is equipped with the inflation inlet, detection case inner chamber is equipped with the movable block that can keep away from or be close to the inflation inlet, and the movable block divide into two cavities to detection case inner chamber, has the cavity of inflation inlet for being used for placing the accommodation chamber of battery that awaits measuring, and accommodates the room and be airtight room, is equipped with the promotion structure that can elasticity promote the movable block to the direction that is close to the inflation inlet in another cavity.

Preferably, a side wall of the detection box is provided with a thin tube with one end in sealing communication with the detection box, and the inner cavity of the thin tube is in sealing sliding fit with the movable block along the length direction of the thin tube.

Preferably, the tubule is made of transparent material, and the tubule body is provided with scales along the length direction.

Preferably, the pushing structure comprises a mounting piece and a spring, the mounting piece is correspondingly mounted at one end part of the tubule, deviating from the detection box, and the spring capable of elastically pushing the movable block to move is arranged at the position of the mounting piece, corresponding to the inner cavity of the tubule.

Preferably, the pushing structure comprises a sealing box with a specific pressurized gas in the inner cavity, and the inner cavity of the sealing box is communicated with one end of the thin pipe, which is away from the detection box, in a sealing way.

Preferably, a plurality of balls distributed in an array are uniformly arranged at the bottom of the accommodating chamber.

Preferably, the detection box comprises a box body and a box door, wherein the box body is positioned at one side of the accommodating chamber away from the movable block and is opened, and the box door capable of being opened and closed is hermetically connected with the opening.

Preferably, the refrigerator further comprises a fixing frame for placing the refrigerator body, one side, close to the refrigerator door, of the bottom surface of the refrigerator body is correspondingly hinged with the fixing frame, and a supporting portion is arranged on one side, far away from the refrigerator door, of the top of the fixing frame, corresponding to the bottom surface of the refrigerator body.

Preferably, the fixing frame is provided with a pushing device which can push the box body to enable one side of the box body far away from the box door to be overturned upwards, wherein the position of the fixing frame close to the supporting part is provided with a pushing device.

The beneficial effects are that:

1. the battery cover of the battery to be tested has a trend of further tightening, so that the technical problems that the battery cover is easy to be pushed open under the action of air pressure in the prior art, so that the tightness of a battery pack is damaged and the detection fails are solved;

2. in the detection process, the air charging head is always connected with the air charging port, so that frequent disassembly operation on the air charging head is not needed, and the technical problem that the air charging head is required to be connected with the air inlet of the battery before and after the air charging and discharging of the inner cavity of the battery in the prior art, so that the operation is complicated is solved;

3. due to the arrangement of the tubules, the moving distance of the movable block can be enlarged, and the detection accuracy is improved;

4. because of the arrangement of the ball or the fixing frame, the battery to be tested is conveniently put into or taken out of the accommodating chamber in a more labor-saving mode, and labor intensity is reduced.

Additional features and advantages of the utility model will be set forth in the description which follows, or may be learned by practice of the utility model.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic illustration of a first construction of the present utility model;

FIG. 2 is a schematic diagram of a first embodiment of the present utility model;

FIG. 3 is a schematic illustration of a second construction of the present utility model;

FIG. 4 is a schematic view of a third construction of the present utility model;

FIG. 5 is a schematic view of a fourth construction of the present utility model;

fig. 6 is a schematic diagram of a fourth configuration detection of the present utility model.

The reference numerals are explained as follows:

1. a detection box; 11. an inflation inlet; 12. a housing chamber; 13. a case; 14. a door; 2. a movable block; 3. a pushing structure; 31. a mounting member; 32. a spring; 33. a seal box; 4. a tubule; 5. a ball; 6. a fixing frame; 61. a support part; 62. pushing the device.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and for simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present utility model, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.

First embodiment, as shown in fig. 1-6, a battery cavity air tightness detection device, including the detection case 1 that the inner chamber can place the battery that awaits measuring, detection case 1 lateral wall is equipped with inflation inlet 11, detection case 1 inner chamber is equipped with the movable block 2 that can keep away from or be close to inflation inlet 11, and movable block 2 divide into two cavities to detection case 1 inner chamber, the cavity that has inflation inlet 11 is for being used for placing the holding chamber 12 of battery that awaits measuring, and holding chamber 12 is the enclosure chamber, be equipped with in another cavity and promote the movable block 2 to be close to the promotion structure 3 that the direction of inflation inlet 11 removed.

Specifically, the detection box 1 comprises a box body 13 and a box door 14, wherein the box body 13 is positioned at one side of the accommodating chamber 12 far away from the movable block 2 and is opened, and the opening is hermetically connected with the box door 14 which can be opened and closed;

if necessary, the inflation inlet 11 is located on a side wall of the housing 13 adjacent to the door 14.

Before use, the air charging head is correspondingly and hermetically connected with the air charging port 11; when the battery to be tested is used, firstly, the battery to be tested is placed in the accommodating chamber 12, then, gas is filled into the accommodating chamber 12 through the charging port 11, and then, the air pressure in the accommodating chamber 12 is increased, the movable block 2 moves to one side far away from the charging port 11 until the movable block 2 moves to a proper position, and after a certain time, the gas is stopped from being filled into the accommodating chamber 12, and the position of the movable block 2 is observed again, if the moving distance of the movable block 2 is within a reasonable range, the air tightness of the inner cavity of the battery is good; if the moving distance of the movable block 2 exceeds a reasonable range, the air leakage of the inner cavity of the battery is indicated.

The battery cover of the battery to be tested has a trend of further tightening, so that the technical problems that the battery cavity needs to be provided with certain air pressure in the prior art, the battery cover is easy to be pushed open under the action of the air pressure, the tightness of a battery pack is damaged, and the detection is failed are solved;

the setting is at the in-process that detects like this, and the head of aerifing is connected with inflation inlet 11 all the time, need not frequent dismantlement operation to the head of aerifing, has solved among the prior art and has all need to be connected the head of aerifing with the battery air inlet around the battery inner chamber is filled gassing, leads to the comparatively loaded down with trivial details technical problem of work.

In the second embodiment, as shown in fig. 1-2, in order to enlarge the moving distance of the movable block 2, so as to facilitate observation and improve detection accuracy, a side wall of the detection box 1 is provided with a tubule 4 with one end in sealed communication with the tubule, and an inner cavity of the tubule 4 is in sealed sliding fit with the movable block 2 along the length direction of the tubule;

when it should be noted that the detection case 1 and the tubule 4 may be regarded as a whole, the portion of the inner cavity of the detection case 1 and the inner cavity of the tubule 4 located near the detection case 1 by the movable block 2 is regarded as the accommodation chamber 12, and the portion of the inner cavity of the tubule 4 located far from the detection case 1 by the movable block 2 is another chamber.

According to needs, for the position of convenient observation movable block 2, tubule 4 is transparent material preparation, and tubule 4 pipe shaft is equipped with the scale along its length direction, can not borrow other equipment like this, and the staff can direct observation learn movable block 2's position.

In some embodiments, as shown in fig. 1-2, the pushing structure 3 includes a mounting member 31 and a spring 32, the mounting member 31 is correspondingly mounted at one end of the tubule 4 facing away from the detection box 1, and the spring 32 capable of elastically pushing the movable block 2 to move is disposed at a position corresponding to the inner cavity of the tubule 4 of the mounting member 31.

When the device is used, firstly, a battery to be tested is placed in the accommodating chamber 12, then, gas is filled into the accommodating chamber 12 through the charging opening 11, the pressure in the accommodating chamber 12 is increased, the movable block 2 moves to one side far away from the charging opening 11 until the movable block 2 moves to a proper position, the gas is stopped to be charged into the accommodating chamber 12, after a certain time, the position of the movable block 2 is observed again, such as gas leakage of the inner cavity of the battery, the gas in the accommodating chamber 12 enters the inner cavity of the battery, the pressure in the accommodating chamber 12 is reduced, the stress of the movable block 2 is unbalanced, at the moment, the spring 32 pushes the movable block 2 to move, and the moving distance of the movable block 2 is larger; if the air tightness of the inner cavity of the battery is good, the air pressure in the accommodating chamber 12 is almost unchanged, the stress of the movable block 2 is balanced, and the movable block 2 does not move or moves a small distance.

In some embodiments, as shown in fig. 5-6, the pushing structure 3 comprises a sealed box 33 with a pressurized gas in the inner cavity, the inner cavity of the sealed box 33 being in sealing communication with the end of the tubule 4 facing away from the detection box 1.

According to the need, in order to prevent the movable block 2 from separating from the tubule 4, the two ends of the tubule 4 are provided with necking treatment, or the two ends of the tubule 4 are provided with annular baffle plates.

In the third embodiment, as shown in fig. 3, in order to facilitate pushing the battery to be tested into or pulling the battery out of the accommodating chamber 12, a plurality of balls 5 distributed in an array are uniformly arranged at the bottom of the inner cavity of the accommodating chamber 12.

In the fourth embodiment, as shown in fig. 4, in order to facilitate taking out or putting in the battery to be tested, the battery box further comprises a fixing frame 6 for placing the box 13, wherein one side of the bottom surface of the box 13 close to the box door 14 is correspondingly hinged with the fixing frame 6, and a supporting part 61 is arranged at the top of the fixing frame 6 and corresponds to one side of the bottom surface of the box 13 far away from the box door 14;

further, a pushing device 62 capable of pushing the box 13 is disposed at a position of the fixing frame 6 close to the supporting portion 61, so that one side of the box 13 far away from the box door 14 is turned upwards, and the pushing device 62 can enable a vertically disposed air cylinder or an electric push rod as required.

Specifically, when the case 13 is connected to the supporting portion 61, the bottom surface of the inner cavity of the case 13 is inclined, and one side close to the door 14 is higher than the other side thereof, and the inclination angle is 5 to 10 degrees, for example, 5 degrees.

When the battery to be tested is placed in the accommodating chamber 12, the door 14 is opened, then the battery to be tested is moved to enable the bottom surface of the battery to be tested to be in contact with the bottom surface of the accommodating chamber 12, then the battery to be tested is pushed inwards, after the battery to be tested is located at a proper position, the door 14 is closed, and then detection is started; when the detection is completed, the door 14 is opened first, then the pushing device 62 is started, the pushing device 62 lifts the box 13, the box 13 is turned upwards, and the battery moves to the open side of the box 13 under the action of gravity.

When the present embodiment is an embodiment in which the seal box 33 is provided, the seal box 33 is fixedly connected with the box body 13 by a connecting member.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and their equivalents.

Claims (9)

1. The utility model provides a battery inner chamber gas tightness detection device which characterized in that: including inner chamber can place detection case (1) of battery that awaits measuring, detection case (1) a side wall is equipped with inflation inlet (11), detection case (1) inner chamber is equipped with movable block (2) that can keep away from or be close to inflation inlet (11), and movable block (2) divide into two cavities to detection case (1) inner chamber, has the cavity of inflation inlet (11) for being used for placing accommodation chamber (12) of battery that awaits measuring, and accommodation chamber (12) are airtight chamber, are equipped with in another cavity and can elastically promote movable block (2) to promotion structure (3) that are close to the direction of inflation inlet (11) and remove.

2. The battery cavity air tightness detection device according to claim 1, wherein: a tubule (4) with one end in sealing communication with the detection box (1) is arranged on one side wall of the detection box, and the inner cavity of the tubule (4) is in sealing sliding fit with the movable block (2) along the length direction of the tubule.

3. The battery cavity air tightness detection device according to claim 2, wherein: the tubule (4) is made of transparent materials, and scales are arranged on the tubular body of the tubule (4) along the length direction of the tubular body.

4. The battery cavity air tightness detection device according to claim 2, wherein: the pushing structure (3) comprises a mounting piece (31) and a spring (32), the mounting piece (31) is correspondingly mounted at one end part of the thin tube (4) deviating from the detection box (1), and the spring (32) capable of elastically pushing the movable block (2) to move is arranged at the position of the mounting piece (31) corresponding to the inner cavity of the thin tube (4).

5. The battery cavity air tightness detection device according to claim 2, wherein: the pushing structure (3) comprises a sealing box (33) with a specific pressurized gas cavity, and the inner cavity of the sealing box (33) is communicated with one end, deviating from the detection box (1), of the thin pipe (4) in a sealing mode.

6. The battery cavity air tightness detection device according to claim 2, wherein: the bottom of the inner cavity of the accommodating chamber (12) is uniformly provided with a plurality of balls (5) distributed in an array.

7. The battery cavity air tightness detection device according to claim 2, wherein: the detection box (1) comprises a box body (13) and a box door (14), wherein the box body (13) is positioned at one side of the accommodating chamber (12) far away from the movable block (2) and is opened, and the box door (14) capable of being opened and closed is connected with the opening in a sealing manner.

8. The battery cavity air tightness detection device according to claim 7, wherein: the novel refrigerator further comprises a fixing frame (6) for placing the refrigerator body (13), one side, close to the refrigerator door (14), of the bottom surface of the refrigerator body (13) is correspondingly hinged with the fixing frame (6), and a supporting portion (61) is arranged at one side, far away from the refrigerator door (14), of the bottom surface of the refrigerator body (13) corresponding to the top of the fixing frame (6).

9. The battery cavity air tightness detection device according to claim 8, wherein: the fixing frame (6) is provided with a pushing device (62) which can push the box body (13) at a position close to the supporting part (61) so that one side of the box body (13) far away from the box door (14) is turned upwards.

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