CN221350447U - Top cover detection clamping device and top cover air tightness detection device - Google Patents

Abstract

The application relates to a top cover detection clamping device and a top cover air tightness detection device. The top cover detection clamping device comprises a first clamping assembly and a second clamping assembly; the first clamping assembly is provided with a first fixing part and a first pole clamping part arranged on the first fixing part; the second clamping assembly is provided with a second pole clamping part; a clamping space for clamping the pole is formed between the first pole clamping part and the second pole clamping part. The application can clamp and fix various types of top covers, namely the top cover detection clamping device is suitable for top covers of different types, a set of special clamps are not required to be opened for each type of top cover, and only the first pole clamping part and the second pole clamping part are required to clamp the pole, so that the top cover detection clamping device provided by the embodiment greatly reduces research and development cost and manufacturing cost and is simple to operate.

Description

Top cover detection clamping device and top cover air tightness detection device

Technical Field

The application relates to the technical field of battery detection equipment, in particular to a top cover detection clamping device and a top cover air tightness detection device.

Background

Currently, the new energy industry is attracting attention, and lithium ion batteries are also attracting attention as one of new energy.

Conventional lithium ion batteries include: top cap, positive pole post and negative pole post; the negative pole post is insulated from the top cover by plastic, and an explosion-proof valve is arranged in the middle of the top cover; in the assembly process, when the top cover is supplied with materials, helium detection test is needed to be carried out on the top cover sheet so as to detect the air tightness of the top cover, and specifically, the air tightness of the upper pole of the top cover and the explosion-proof valve is detected.

Because of the variety of sizes of the top cover, at present, a set of special helium detection clamps are required for each type of top cover. As a result, development and manufacturing costs are greatly increased.

Therefore, there is a need for a device for detecting and clamping a top cover and a device for detecting the tightness of the top cover, which solve the technical problems in the prior art to a certain extent.

Disclosure of utility model

The application aims to provide a top cover detection clamping device and a top cover air tightness detection device, and the top cover detection clamping device can be used for top covers of different types, so that the research and development cost is saved.

The application provides a top cover detection clamping device which is used for clamping a top cover of a battery, wherein a pole is arranged on the top cover; the top cover detection clamping device comprises a first clamping assembly and a second clamping assembly;

The first clamping assembly is provided with a first fixing part and a first pole clamping part arranged on the first fixing part; the second clamping assembly is provided with a second pole clamping part; and a clamping space for clamping the pole is formed between the first pole clamping part and the second pole clamping part.

In the above technical solution, further, the first clamping assembly includes a fixing plate capable of serving as the first fixing portion and a first ram capable of serving as the first pole clamping portion;

a first slideway extending along a first direction is arranged on one side of the fixed plate, which faces the second clamping assembly;

The first pressure head is arranged on the first slideway in a sliding way, so that the first pressure head corresponds to the pole.

In the above technical scheme, further, an explosion-proof valve is further arranged on the top cover; the first fixing part is also provided with an explosion-proof valve clamping part;

the explosion proof valve clamping portion is movable on the first fixed portion in a first direction such that the explosion proof valve clamping portion corresponds to the explosion proof valve.

In the above technical solution, further, a second pressure head capable of being used as the clamping part of the explosion-proof valve is provided on the first fixing part;

The second pressure head is arranged on the first slideway in a sliding way, so that the clamping part of the explosion-proof valve corresponds to the explosion-proof valve.

In the above technical solution, further, the first slideway includes a first channel and a second channel communicating with the first channel; the first channel and the second channel are in an inverted T shape;

The first pressure head comprises a first clamping block and a first limiting block; the first clamping block is connected with the first limiting block through a first connecting block; the size of the first connecting block in the direction perpendicular to the first direction is smaller than the width of the first channel, and the size of the first limiting block in the direction perpendicular to the first direction is smaller than the width of the second channel and larger than the width of the first channel, so that the first clamping block can slide along the first direction.

In the above technical solution, further, a side of the first clamping block facing the second clamping assembly has a containing cavity, and the containing cavity is used for containing the detection gas.

In the above technical solution, further, the first clamping assembly further includes a second slideway having a same size as the first slideway; the second slideway is perpendicular to the first slideway at the central position of the fixed plate; the second slideway comprises a third channel and a fourth channel communicated with the third channel;

The second pressure head comprises a second clamping block and a second limiting block; the first clamping block is connected with the second limiting block through a second connecting block; the size of the second connecting block in the width direction of the second clamping block is smaller than the width of the first channel, and the size of the second limiting block in the width direction of the second clamping block is smaller than the size of the second channel; the size of the second limiting block in the length direction of the second clamping block is smaller than the size of the second limiting block in the width direction of the second clamping block, and the size of the second connecting block in the length direction of the second clamping block is equal to the size of the second limiting block in the length direction of the second clamping block and larger than the width of the first channel.

In the above technical scheme, further, the second clamping block and one side of the first clamping block facing the second clamping assembly are both provided with a containing cavity, and the containing cavity is used for containing detection gas.

In the above technical solution, further, the first clamping assembly further includes a first connecting member;

When the first pressure head corresponds to the pole column in position and the second pressure head corresponds to the explosion-proof valve, the first pressure head and the second pressure head are respectively fixed on the fixed plate through the first connecting piece.

In the above technical solution, further, third connection blocks are provided at side edges of the first pressure head and the second pressure head;

The first connecting piece passes through the third connecting block and penetrates into the fixing plate, so that the first pressure head and the second pressure head are both fixed on the fixing plate.

In the above technical solution, further, one ends of the first limiting block and the second limiting block, which are far away from the second clamping component, are provided with connecting holes;

The first connecting piece passes through the fixed plate and is connected in the connecting hole, so that the first pressure head and the second pressure head are both fixed on the fixed plate.

The application also provides a top cover air tightness detection device which comprises an air inlet pipeline, an air outlet pipeline and the top cover detection clamping device;

The second clamping assembly further comprises a shell, the explosion-proof valve clamping part is arranged on the shell, and the fixing plate can be buckled with the shell to form a sealing space;

One of the air inlet pipeline and the air outlet pipeline is communicated with the accommodating cavity, and the other is communicated with the sealing space;

The air inlet pipeline can guide detection gas into the sealing space or the accommodating cavity; when the detection gas introduced through the air inlet pipeline can be conducted through the air outlet pipeline, the top cover is marked as unqualified, and when the helium gas introduced through the air inlet pipeline cannot be conducted through the air outlet pipeline, the top cover is marked as qualified.

In the above technical solution, further, the first clamping assembly further includes a first sealing member;

The first sealing piece is arranged between the first clamping block and the pole column and between the second pressure head and the explosion-proof valve respectively.

In the above technical solution, further, the second clamping assembly includes a mounting plate capable of being used as the clamping part of the explosion-proof valve and a buffer sealing block;

The assembly plate is fixed on the shell through a second connecting piece;

the assembly plate has an installation space, and the buffer sealing block is fixed in the installation space.

Compared with the prior art, the application has the beneficial effects that:

(1) The top cover detection clamping device provided by the application can clamp and fix various types of top covers, namely the top cover detection clamping device is suitable for top covers of different types, a set of special clamps do not need to be opened for each type of top cover, and only the first pole clamping part and the second pole clamping part are required to clamp poles, so that the top cover detection clamping device provided by the embodiment greatly reduces research and development cost and manufacturing cost and is simple to operate.

(2) The top cover air tightness detection device provided by the application can be provided with the pressure heads for opening, the pressure head compatibility range is wide, most top covers can be covered by 2 to 3 pressure heads, and the whole top cover detection clamping device is replaced frequently; for a special top cover, only a special fixture head is needed to be opened, so that the replacement is more convenient; the design is simple and convenient, the cost is saved, and compared with a special helium detection clamp, the design head is simpler and more convenient and more efficient.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, 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 structural diagram of a first clamping assembly in a top cover detecting and clamping device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a first clamping assembly, a top cover and a part of a second clamping assembly in a top cover detection clamping device according to an embodiment of the application;

Fig. 3 is a schematic structural view of a fixing plate in a top cover detecting and clamping device according to an embodiment of the present application;

FIG. 4 is an enlarged view of FIG. 3 at A;

Fig. 5 is a schematic structural diagram of a first pressure head and a second pressure head in a top cover detecting and clamping device according to a first embodiment of the present application;

Fig. 6 is a schematic structural diagram of a top cover air tightness detection device according to a second embodiment of the present application under a first view angle;

Fig. 7 is a schematic structural diagram of a top cover air tightness detection device according to a second embodiment of the present application under a second view angle;

Fig. 8 is a schematic structural diagram of a second clamping assembly in the top cover air tightness detection device according to the second embodiment of the present application;

Fig. 9 is a schematic structural diagram of a second clamping assembly and a cover plate in the top cover air tightness detection device according to the second embodiment of the present application.

Reference numerals:

1-top cover; 2-positive electrode posts; 3-first pressure head; 4-a negative electrode column; 5-an explosion-proof valve; 6-fixing plates; 8-a second ram; 9-a first slideway; 10-first direction; 11-second first press head; 12-a first channel; 13-a second channel; 14-a first clamping block; 15-a first limiting block; 16-a first connection block; 17-a receiving cavity; 18-a second slideway; 20-a third channel; 21-fourth channel; 22-a second clamping block; 23-a second limiting block; 24-a second connection block; 25-a first connector; 26-a third connection block; 27-connecting holes; 28-a housing; 29-an air inlet pipeline; 30-assembling a plate; 31-buffering a sealing block; 32-an air outlet pipeline.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the apparatus described herein. Various changes, modifications, and equivalents of the devices described herein will, however, become apparent after review of the disclosure of the application. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein.

In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatially relative terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above … …" includes both orientations "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent upon an understanding of the present disclosure. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

Example 1

A cap detection holding device provided in this embodiment is described with reference to fig. 1 to 6.

In this embodiment, as shown in fig. 1 and 2, the top cover detection clamping device is used for clamping the top cover 1 of the battery, and the top cover is provided with a pole; the top cover 1 detection clamping device comprises a first clamping component and a second clamping component; specifically, the first clamping assembly is provided with a first fixing part and a first pole clamping part, and the first pole clamping part is arranged on the first fixing part; the second clamping component is provided with a second pole clamping part, the second pole clamping part is opposite to the first pole clamping part, and a clamping space is formed between the first pole clamping part and the second pole clamping part, and the clamping space can clamp the pole on the top cover, especially in the testing process of the pole of the top cover 1 (in the pole air tightness testing process of the top cover 1), the second clamping component can be used for clamping and fixing the pole on the top cover 1 and prevent the top cover 1 from moving.

In the actual clamping process, the pole of the top cover 1 can be placed on the first clamping part, and then the pole of the top cover 1 can be clamped by buckling the second clamping assembly to the pole of the top cover 1.

In summary, the device for detecting and clamping the top cover 1 provided in this embodiment can clamp and fix top covers 1 of various types, that is, the device for detecting and clamping the top cover 1 is suitable for top covers 1 of different types, and there is no need to reopen a set of special clamps for top covers 1 of each type, and only the first pole clamping part and the second pole clamping part need to be ensured to clamp poles, so that the device for detecting and clamping the top cover provided in this embodiment greatly reduces research and development cost, manufacturing cost and operation simplicity.

In this embodiment, the first pole grip part is movable on the first fixing part in a first direction 10, wherein the first direction 10 refers to the length direction of the first fixing part and is also the length direction of the top cover 1; the first pole clamping portion is made to correspond to the pole by moving the first pole clamping portion in the first direction 10, that is, the lower end face of the pole is clamped and fixed by the first pole clamping portion.

Specifically, the first clamping assembly comprises a fixed plate 6, a first pressing head 3 and a second pressing head 11; further, in the conventional case where there are two poles, one being the positive pole 2 and the other being the negative pole 4, in order to be able to clamp and fix the two poles respectively, there are provided two first indenters, respectively a first indenter 3 and a second first indenter 11, in this embodiment, it is desirable to clamp and fix the positive pole 2 with the first indenter 3 and clamp and fix the negative pole 4 with the second first indenter 11.

Specifically, as shown in fig. 1 and 3, the side of the fixing plate 6 facing the second clamping assembly is provided with a first slideway 9 extending in a first direction 10; the first pressure head 3 and the second pressure head 11 can slide on the first slideway 9 along the first direction 10, so that the first pressure head 3 corresponds to the positive pole 2, and the second pressure head 11 corresponds to the negative pole 4.

Further, as shown in conjunction with fig. 3 and 4, the first slide 9 includes a first passage 12 and a second passage 13 communicating with the first passage 12; the first channel 12 and the second channel 13 are inverted T-shaped, which is understood herein to mean that the width of the first channel 12 is smaller than the width of the second channel 13; referring to fig. 5, the first pressing head 3 (the second pressing head 11 has the same structure as the first pressing head 3, and the specific structure of the second pressing head 11 is not described in detail) includes a first clamping block 14 and a first limiting block 15; the first clamping block 14 is connected with a first limiting block 15 through a first connecting block 16; the dimension of the first connecting block 16 perpendicular to the first direction 10, i.e. the width of the first connecting block 16 is smaller than the width of the first channel 12, the dimension of the first stopper 15 perpendicular to the first direction 10, i.e. the width of the first stopper 15 is smaller than the width of the second channel 13 and larger than the width of the first channel 12, i.e. the first clamping block 14 is slidable on the first channel 12 when sliding the first ram 3 on the first slide 9, and the first stopper 15 is slidable on the second channel 13. Notably, are: since the width of the first clamping block 14 is greater than the width of the first channel 12, which is equivalent to the first channel 12 having a certain limiting effect on the first clamping block 14, the first clamping block 14 is prevented from moving toward the second clamping assembly.

Further, the side of the first clamping block 14 facing the second clamping member has a receiving chamber 17, the receiving chamber 17 being adapted to receive a detection gas. The detection gas may be helium or other gas.

In summary, when the airtight seal test is performed on the pole on the top cover 1, the size of the top cover 1 and the position of the pole do not need to be considered, and only the position of the first pole clamping part needs to be adjusted, so that the first pole clamping part corresponds to the pole, that is, the top cover 1 detection clamping device provided in the embodiment can be suitable for top covers 1 of different models.

In the embodiment, the top cover 1 is also provided with an explosion-proof valve 5, and the fixed plate is also provided with an explosion-proof valve clamping part; the explosion-proof valve clamping part can also move on the fixing plate along the first direction 10, so that the explosion-proof valve clamping part corresponds to the explosion-proof valve 5, namely, the explosion-proof valve 5 is clamped and fixed by the explosion-proof valve clamping part.

Specifically, a second pressure head 8 capable of being used as an explosion-proof valve clamping part is arranged on the fixed plate; the second pressure head 8 is movable on the fixed plate in a first direction 10 such that the explosion proof valve clamping portion corresponds to the explosion proof valve 5, i.e. the explosion proof valve 5 is clamped and fixed by the second pressure head 8.

In summary, when the air-tight seal test of the explosion-proof valve 5 on the top cover 1 is performed, the size of the top cover 1 and the position of the explosion-proof valve 5 do not need to be considered, and only the position of the explosion-proof valve clamping part needs to be adjusted, so that the explosion-proof valve clamping part corresponds to the explosion-proof valve 5, that is, the top cover 1 detection clamping device provided in the embodiment can be suitable for top covers 1 of different models.

Further, the second clamping block 22 and the side of the first clamping block 14 facing the second clamping assembly are each provided with a receiving cavity 17, and the receiving cavity 17 is used for receiving the detection gas. The detection gas may be helium or other gas.

In this embodiment, as shown in connection with fig. 5, the first clamping assembly further comprises a first connector 25; preferably, the first connecting piece 25 is a bolt, and when the first pressure head 3 is adjusted to be corresponding to the positive pole 2, the second pressure head 11 is corresponding to the negative pole 4, and the second pressure head 8 is corresponding to the explosion-proof valve 5, the first pressure head 3, the second pressure head 11 and the second pressure head 8 are respectively fixed on the fixed plate 6 by the bolts.

Specifically, the ends of the first limiting block 15 and the second limiting block 23 far away from the second clamping component are provided with connecting holes 27, which can be understood herein that the sides of the first limiting block 15 and the second limiting block 23 near the fixed plate 6 are provided with connecting holes 27; when the first pressure head 3 corresponds to the positive pole 2, the second pressure head 11 corresponds to the negative pole 4, and the second pressure head 8 corresponds to the explosion-proof valve 5, the first connecting piece 25 penetrates through the fixing plate 6 and is connected in the connecting hole 27, so that the first pressure head 3, the second pressure head 11 and the second pressure head 8 are fixed.

Further, as shown in fig. 1, the side edges of the first pressure head and the second pressure head are provided with third connecting blocks 26; the first connecting piece 25 passes through the third connecting block 26 and penetrates into the fixed plate 6, and further both the first pressure head and the second pressure head 8 can be fixed on the fixed plate 6.

The above description is that the first pressure head and the second pressure head 8 are both slidably disposed on the first slideway 9, and as shown in fig. 1-5, a manner may be implemented in which the first pressure head slides on the first slideway 9, and the second pressure head 8 slides on the second slideway 18; specifically, in this embodiment, as shown in connection with fig. 3 and 4, the first clamping assembly further comprises a second runner 18 of the same size as the first runner 9; the second slideway 18 is perpendicular to the first slideway 9 at the central position of the fixed plate 6; the second runner 18 includes a third channel 20 and a fourth channel 21 in communication with the third channel 20; further, the third channel 20 and the fourth channel 21 are inverted T-shaped, which is understood herein to mean that the width of the third channel 20 is smaller than the width of the fourth channel 21; further, as shown in fig. 5, the second pressing head 8 includes a second clamping block 22 and a second limiting block 23; the first clamping block 14 is connected with a second limiting block 23 through a second connecting block 24; the width of the second connecting block 24 is smaller than the width of the third channel 20, the width of the second stopper 23 is smaller than the width of the fourth channel 21 and larger than the width of the third channel 20, that is, the second clamping block 22 can slide on the third channel 20 when the second ram 8 slides on the second slideway 18, and the second stopper 23 can slide on the fourth channel 21. And finally, fixing through bolts.

In addition, the second ram 8 may be structured as follows and fixed in the following manner: the dimension of the second connecting block 24 in the width direction of the second clamping block 22 is smaller than the width of the first channel 12, and the dimension of the second limiting block 23 in the width direction of the second clamping block 22 is smaller than the dimension of the second channel 13; the dimension of the second limiting block 23 in the length direction of the second clamping block 22 is smaller than the dimension of the second limiting block 23 in the width direction of the second clamping block 22, and the dimension of the second connecting block 24 in the length direction of the second clamping block 22 is equal to the dimension of the second limiting block 23 in the length direction of the second clamping block 22 and is larger than the width of the first channel 12; in the actual installation process, the second pressure head 8 is arranged on the first slide way 9 in a sliding manner according to the length direction of the second pressure head 8 and the length direction of the first slide way 9; the second ram 8 is then slid to the intersection (centre) of the first slide 9 and the second slide 18; finally, the second pressure head 8 is rotated.

The dimension of the second connection block 24 in the direction perpendicular to the first direction 10 is smaller than the width of the third channel 20, the dimension of the second limiting block 23 in the width direction of the second clamping block 22 is smaller than the width of the first channel 12, and the dimension of the second limiting block 23 in the length direction of the second clamping block 22 is larger than the width of the fourth channel 21.

Example two

Referring to fig. 6 to 9, a device for detecting airtightness of the top cover 1 provided in this embodiment will be described in detail.

In this embodiment, the top cover 1 air tightness detection device includes an air inlet pipe 29, an air outlet pipe 32, and a top cover 1 detection clamping device.

Specifically, the second clamping assembly further includes a housing 28, the explosion-proof valve clamping portion is disposed on the housing 28, and the fixing plate 6 can be buckled with the housing 28 to form a sealed space.

Specifically, the air outlet pipe 32 communicates with the accommodation chamber 17, and the air inlet pipe 29 communicates with the sealed space; further, through holes are formed in the side walls of the first clamping block 14 and the second clamping block 22, and the air outlet pipeline 32 passes through the through holes to be communicated with the accommodating cavity 17.

Further, foam blocks can be adhered to the gaps of the sealing space to save the helium consumption, so that unnecessary space of the sealing space is reduced.

In actual use, the inlet line 29 introduces a test gas, preferably helium, into the sealed space, which, if it is detected at the outlet line 32, indicates that helium passes through the sealed space through the cap 1 and reaches the receiving chamber 17, and that the cap 1 is unacceptable, and vice versa (since the cap 1 seals the receiving chamber 17 when the cap 1 is clamped between the first clamping assembly and the second clamping assembly, the helium introduced into the sealed space passes through the cap 1 from the sealed space when it is detected by the outlet line 32, that is to say that the cap 1 is unacceptable).

Or by introducing a detection gas, preferably helium, into the receiving chamber 17 through the outlet line 32, if helium is detected at the inlet line 29, this indicates that helium passes through the receiving chamber 17 through the cap 1 and reaches the sealed space, and that the cap 1 is unacceptable, or otherwise acceptable.

Notably, are: the first clamping block 14 and the second clamping block 22 can use the same air inlet pipeline 29, and the air inlet pipeline 29 communicates the accommodating cavity 17 of the pole and the accommodating cavity 17 of the explosion-proof valve; of course, the first clamping block 14 and the second clamping block 22 may be provided with the air inlet pipe 29 separately, and the respective accommodating chambers 17 may not communicate with each other, and if there is a problem in the actual detection process, it may be determined that the air tightness of the top cover is poor, and the top cover is not acceptable.

In this embodiment, the first clamping assembly further comprises a first seal. Specifically, the first sealing members are respectively arranged between the first pressure head 3 and the positive electrode column 2, between the second pressure head 11 and the negative electrode column 4, and between the second pressure head 8 and the explosion-proof valve 5.

Further, a groove is formed in one end, facing the second clamping assembly, of the first pressure head 3, the second pressure head 11 and the second pressure head 8, and the first sealing piece is arranged at the groove, so that the first pressure head 3, the positive pole 2, the second pressure head 11, the negative pole 4, the second pressure head 8 and the explosion-proof valve 5 are sealed; so that the air seal test is more accurate.

In this embodiment, the second clamping assembly includes a mounting plate 30 capable of functioning as a blast-valve clamping portion and a buffer seal block 31. Specifically, the mounting plate 30 is secured to the housing 28 by a second connector; preferably, the second connector is a bolt. Specifically, the assembly plate 30 has an installation space to which the buffer seal block 31 is fixed; the buffer seal block 31 can prevent the overpressure (the pressure of the second clamping assembly pressed on the top cover 1) from affecting the flatness of the top cover 1, and can provide a certain pressure.

Further, two assembly plates 30 are provided, and the two assembly plates 30 correspond to the positive electrode post 2 and the negative electrode post 4, respectively.

Further, a second sealing member is further provided between the buffer sealing block 31 and the positive electrode post 2 and the negative electrode post 4 for further sealing the buffer sealing block 31 and the positive electrode post 2 and the negative electrode post 4.

In summary, the pressure head for opening the air tightness detection device of the top cover 1 provided by the application has wide compatible range, and most of the top cover 1 can be covered by 2 to 3 pressure heads, so that the detection clamping device of the whole top cover 1 is replaced frequently; for the special top cover 1, only a special fixture head is needed to be opened, so that the replacement is more convenient; the design is simple and convenient, the cost is saved, and compared with a special helium detection clamp, the design head is simpler and more convenient and more efficient.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application 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 or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (14)

1. A top cover detection clamping device is used for clamping a top cover (1) of a battery, and a pole is arranged on the top cover (1); the top cover detection clamping device is characterized by comprising a first clamping assembly and a second clamping assembly;

The first clamping assembly is provided with a first fixing part and a first pole clamping part arranged on the first fixing part; the second clamping assembly is provided with a second pole clamping part; and a clamping space for clamping the pole is formed between the first pole clamping part and the second pole clamping part.

2. The cap inspection clamp device according to claim 1, wherein the first clamp assembly includes a fixed plate (6) capable of functioning as the first fixed portion and a first ram capable of functioning as the first pole clamp portion;

A first slideway (9) extending along a first direction (10) is arranged on one side of the fixed plate (6) facing the second clamping assembly;

The first pressure head is arranged on the first slideway (9) in a sliding way, so that the first pressure head corresponds to the pole.

3. The top cover detection clamping device according to claim 2, wherein the top cover (1) is further provided with an explosion-proof valve (5); the first fixing part is also provided with an explosion-proof valve clamping part;

the explosion proof valve clamping portion is movable on the first fixed portion in a first direction (10) such that the explosion proof valve clamping portion corresponds to the explosion proof valve.

4. A cap inspection clamp device according to claim 3, wherein a second ram (8) capable of functioning as the explosion-proof valve clamp is provided on the first fixing portion;

The second pressure head (8) is arranged on the first slideway (9) in a sliding way, so that the clamping part of the explosion-proof valve corresponds to the explosion-proof valve.

5. The roof inspection gripping device of claim 4, characterized in that the first runner (9) includes a first channel (12) and a second channel (13) in communication with the first channel (12); the first channel (12) and the second channel (13) are in an inverted T shape;

the first pressure head comprises a first clamping block (14) and a first limiting block (15); the first clamping block (14) is connected with the first limiting block (15) through a first connecting block (16); the dimension of the first connecting block (16) in the direction perpendicular to the first direction (10) is smaller than the width of the first channel (12), the dimension of the first limiting block (15) in the direction perpendicular to the first direction (10) is smaller than the width of the second channel (13) and larger than the width of the first channel (12), and the first clamping block (14) can slide along the first direction (10).

6. The cap inspection clamp device according to claim 5, characterized in that a side of the first clamp block (14) facing the second clamp assembly has a receiving cavity (17), the receiving cavity (17) being adapted to receive inspection gas.

7. The roof inspection clamp device according to claim 5, characterized in that said first clamp assembly further comprises a second runner (18) of the same size as said first runner (9); the second slideway (18) is perpendicular to the first slideway (9) at the central position of the fixed plate (6); the second slideway (18) comprises a third channel (20) and a fourth channel (21) which is communicated with the third channel (20);

The second pressure head (8) comprises a second clamping block (22) and a second limiting block (23); the first clamping block (14) is connected with the second limiting block (23) through a second connecting block (24); the dimension of the second connecting block (24) in the width direction of the second clamping block (22) is smaller than the width of the first channel (12), and the dimension of the second limiting block (23) in the width direction of the second clamping block (22) is smaller than the dimension of the second channel (13); the size of the second limiting block (23) in the length direction of the second clamping block (22) is smaller than the size of the second limiting block (23) in the width direction of the second clamping block (22), and the size of the second connecting block (24) in the length direction of the second clamping block (22) is equal to the size of the second limiting block (23) in the length direction of the second clamping block (22) and larger than the width of the first channel (12).

8. The roof inspection clamp device according to claim 7, characterized in that the second clamp block (22) and the side of the first clamp block (14) facing the second clamp assembly each have a receiving cavity (17), the receiving cavity (17) being adapted to receive an inspection gas.

9. The cap inspection clamp device according to claim 7, wherein the first clamp assembly further comprises a first connector (25);

When the first pressure head corresponds to the position of the pole, and the second pressure head (8) corresponds to the position of the explosion-proof valve (5), the first pressure head and the second pressure head (8) are respectively fixed on the fixed plate (6) through the first connecting piece (25).

10. The top cover detection clamping device according to claim 9, wherein the side edges of the first and second pressure heads are provided with a third connecting block (26);

The first connecting piece (25) passes through the third connecting block (26) and penetrates into the fixed plate (6), so that the first pressure head and the second pressure head (8) are both fixed on the fixed plate (6).

11. The top cover detection clamping device according to claim 9, wherein the first limiting block (15) and the second limiting block (23) are provided with connecting holes (27) at one ends far away from the second clamping assembly;

The first connecting piece (25) passes through the fixed plate (6) and is connected in the connecting hole (27), so that the first pressure head and the second pressure head (8) are both fixed on the fixed plate (6).

12. A top cover air tightness detection device, characterized by comprising an air inlet pipeline (29), an air outlet pipeline (32) and the top cover detection clamping device according to claim 6 or 8;

the second clamping assembly further comprises a shell (28), and the fixing plate (6) can be buckled with the shell (28) to form a sealed space;

One of the air inlet pipeline (29) and the air outlet pipeline (32) is communicated with the accommodating cavity (17), and the other is communicated with the sealing space;

The air inlet line (29) can introduce a detection gas into the sealing space or the receiving chamber (17); when the detection gas introduced through the air inlet pipeline (29) can be conducted through the air outlet pipeline (32), the top cover (1) is marked as unqualified, and when the detection gas introduced through the air inlet pipeline (29) can not be conducted through the air outlet pipeline (32), the top cover (1) is marked as qualified.

13. The lid tightness detection device of claim 12, wherein the first clamping assembly further comprises a first seal;

The first sealing piece is respectively arranged between the first clamping block (14) and the pole and between the second pressure head (8) and the explosion-proof valve (5).

14. The top cover airtightness detection apparatus according to claim 12, wherein the second clamping assembly includes a fitting plate (30) and a buffer seal block (31) that can be used as the explosion-proof valve clamping portion;

the assembly plate (30) is secured to the housing (28) by a second connector;

The mounting plate (30) has an installation space, and the buffer seal block (31) is fixed to the installation space.