CN221056005U - Detection tool - Google Patents

Abstract

The embodiment of the application provides a detection tool for detecting the air tightness of a battery, which comprises a detector and a plurality of clamping pieces. The clamping piece is provided with a detection cavity, and the detector is communicated with the detection cavity and is used for detecting the air pressure of the detection cavity. Wherein, a plurality of holders are configured to set up in the outside of box, and a plurality of holders cooperate with the different parts of closing the portion in order to detect the gas tightness of corresponding part, and the detection chamber of a plurality of holders is not intercommunicated to this more effectually carries out the gas tightness to the battery and detects, has improved the reliability of battery.

Description

Detection tool

Technical Field

The application relates to the technical field of battery production, in particular to a detection tool.

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles.

In the development of battery technology, how to improve the reliability of a battery is a technical problem that needs to be solved in battery technology.

Disclosure of utility model

The application aims to provide a detection tool which can improve the reliability of a battery.

The application is realized by the following technical scheme:

In a first aspect, the application provides a detection tool for detecting the air tightness of a battery, the battery comprises a box body, the box body comprises a first sub-box body and a second sub-box body, the first sub-box body and the second sub-box body are mutually covered and form a covering part matched with each other, and the detection tool comprises a detector and a plurality of clamping pieces. The clamping piece is provided with a detection cavity, and the detector is communicated with the detection cavity and is used for detecting the air pressure of the detection cavity. The plurality of clamping pieces are configured to be arranged on the outer side of the box body, the plurality of clamping pieces are matched with different parts of the covering part to detect the air tightness of the corresponding parts, and the detection cavities of the plurality of clamping pieces are not communicated with each other.

According to the technical scheme, the detection tool comprises the clamping pieces and the detector connected with the clamping pieces, the clamping pieces are arranged on the outer side of the box body of the battery and are respectively matched with different parts of the covering part of the box body, so that the detection cavity of each clamping piece is communicated with gaps of each part of the covering part, the airtightness of different parts of the covering part is detected through the detection cavities which are not communicated with each other of the clamping pieces, the airtightness of the covering part is detected in a partial area, the detection of a single area is realized, the airtightness detection error is reduced, the efficiency of locking the airtight leakage area is improved, the airtightness detection of the battery is more effectively realized, the risk of water and dust entering of the battery due to the influence of the airtightness of the battery caused by the single area is reduced, and the reliability of the battery is improved.

In some embodiments, the clamping member includes a first portion, a second portion, and a third portion, the first portion and the second portion being spaced apart in a first direction, one end of the first portion and one end of the second portion on a same side in a second direction being connected to the third portion, respectively, the other end of the first portion and the second portion on the same side being formed with a first opening into which the covering portion is inserted, the first portion, the second portion, and the third portion together defining a detection chamber having one end opening, wherein the first direction and the second direction intersect.

According to the technical scheme, the first part and the second part are arranged at intervals in the first direction, the third part is connected with one end of the same side of the first part and the second part, and the openings of the first part and the second part on the side are blocked, so that the first part, the second part and the third part jointly define the detection cavity with the first opening at the other end of the same side of the first part and the second part, the detection cavity of the clamping piece is easy and convenient to process, and the clamping piece is convenient to match with the covering part of the box body.

In some embodiments, the first portion and the second portion are configured to grip the covering portion.

According to the technical scheme, the first part and the second part clamp the cover part of the box body, so that the clamping piece and the cover part are convenient to match, and the matching stability of the clamping piece and the cover part is improved.

In some embodiments, the clamping member further comprises a first seal member, and in the first direction, two opposing walls of the detection chamber are each provided with a first groove, and both first grooves are each provided with a first seal member.

According to the technical scheme, the two first sealing pieces are respectively arranged on the two first sealing pieces, when the clamping piece is connected with the covering part, the two first sealing pieces are respectively abutted against the two ends of the covering part to seal the first opening of the detection cavity, so that the air tightness of the detection cavity is improved, the risk of inaccurate air tightness detection caused by leakage of the detection cavity when the covering part is arranged in the detection cavity for air tightness detection is reduced, and the accuracy of air tightness detection of the detection cavity is improved.

In some embodiments, the first portion, the second portion, and the third portion each extend in a third direction in which the length of the first recess is the same as the length of the detection cavity, wherein the third direction intersects a plane in which the first direction and the second direction lie.

According to the technical scheme provided by the embodiment of the application, in the third direction, the length of the first groove is the same as that of the detection cavity, so that the first openings of the detection cavity can be completely sealed by the two first sealing pieces in the third direction, the risk of inaccurate air tightness detection caused by leakage of the detection cavity when the cover part is arranged in the detection cavity for air tightness detection is better reduced, and the accuracy of air tightness detection of the detection cavity is improved.

In some embodiments, the clamp further comprises a second seal disposed in the detection chamber, the second seal being connected to the first portion, the second portion, the third portion, and both the first seals.

According to the technical scheme, the second sealing element is arranged in the detection cavity, the detection cavity is divided into two or more independent cavities through the sealing element, so that when the clamping element detects the air tightness of the part corresponding to the covering part, the partial area is divided into two or more independent areas for detection, the air tightness of different areas of the part corresponding to the covering part is detected through the cavities which are not communicated with each other, the detection of the air tightness in the partial area is further realized, the detection of the single area is realized, the error of the air tightness detection is reduced, the efficiency of locking the air tightness leakage area is improved, the air tightness detection of the battery is more effectively realized, the risk of water inlet and dust inlet of the battery due to the influence of the air tightness of the battery caused by the single area is reduced, and the reliability of the battery is improved.

In some embodiments, the second seal is configured in multiple and spaced apart along the third direction.

According to the technical effect of the embodiment of the application, the plurality of second sealing pieces are arranged at intervals along the third direction, so that the detection cavity is divided into the plurality of independent cavities in the third direction, when the clamping piece detects the air tightness of the part corresponding to the covering part, the partial area is divided into the plurality of independent areas for detection, the air tightness of different areas of the part corresponding to the covering part is detected through the cavities which are not communicated with each other, the detection of the air tightness in the partial area is further realized, the detection of the single area is realized, the error of the air tightness detection is reduced, the efficiency of locking the air tightness leakage area is improved, the air tightness detection of the battery is more effectively realized, the risk of water inlet and dust inlet of the battery caused by the influence of the air tightness of the battery due to the single area is reduced, and the reliability of the battery is improved.

In some embodiments, the clamping member further includes two connection portions respectively disposed at both ends of the first portion in the third direction, the connection portions being configured to close the slit at the corner of the covering portion.

According to the technical scheme, the connecting part is arranged at one end of the first part in the third direction, when the clamping piece is connected with the covering part, the connecting part is correspondingly connected with the corner of the covering part, and the area of the covering part at the corner is plugged through the connecting part, so that the influence of the area of the covering part at the corner on air tightness detection is reduced, and the accuracy of the air tightness detection is improved.

In some embodiments, the connecting portion is movably connected with the first portion, and in the third direction, the connecting portion is movable in a direction away from or toward the first portion.

According to the technical scheme, the connecting part can move in the direction away from or close to the first part in the third direction, and when the clamping piece is connected with the covering part, the clamping piece is convenient to install by changing the positions of the connecting part and the first part, so that the convenience of assembly is improved.

In some embodiments, the detection tool further comprises a sealing portion, the at least one clamping member is provided with the sealing portion, the sealing portion is movably connected with the first portion along the second direction, and a sealing cavity for accommodating the connector on the outer surface of the box body is arranged in the sealing portion.

According to the technical scheme provided by the embodiment of the application, the sealing part is arranged, and the connector on the outer surface of the box body is accommodated in the sealing cavity of the sealing part, so that the risk of inaccurate air tightness detection caused by interface leakage of the connector when the detection cavity detects air tightness of the cover part is reduced, the influence of interface of the connector is reduced, and the accuracy of air tightness detection is improved.

In some embodiments, the clamping member further includes an adjusting portion, one end of the adjusting portion is connected to the sealing portion, the other end of the adjusting portion is connected to the clamping member in a penetrating manner, and the adjusting portion is configured to drive the sealing portion to approach or separate from the clamping member in the second direction.

According to the technical scheme, the clamping piece and the sealing part are connected through the adjusting part, the distance between the sealing part and the clamping piece can be adjusted, and the convenience of connecting the clamping piece and the sealing part to the box body is improved.

In some embodiments, the clamping member is further provided with a power device configured to move the clamping member in the second direction.

According to the technical scheme, the power device is arranged, and the clamping piece is driven to move along the second direction by the power device in the installation process of the clamping piece, so that the clamping piece is matched with the covering part, and the installation convenience is improved.

In some embodiments, the number of power devices is plural, and the power devices are disposed at intervals along the third direction on the clamping member.

According to the technical scheme provided by the embodiment of the application, the power devices are arranged at intervals along the third direction, so that the stress is more uniform in the process of moving the clamping piece, and the stability of moving the clamping piece is improved.

In some embodiments, the outer surface of the case is provided with a positioning portion, and the clamping member is further provided with a positioning pin configured to penetrate the first portion and the second portion along the first direction for mating connection with the positioning portion.

According to the technical scheme, the locating pin is arranged, so that the clamping piece can be conveniently located in advance when being connected with the cover part, and the convenience and accuracy of installation are improved.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a battery provided in some embodiments of the present application;

FIG. 2 is a schematic view of the structure of the case in FIG. 1;

Fig. 3 is a schematic structural diagram of a detection tool according to some embodiments of the present application;

FIG. 4 is a schematic view of the clamping member in FIG. 3;

FIG. 5 is a schematic view of the connection of the clamping member and the covering portion in FIG. 4;

FIG. 6 is a schematic view of the clamping member of FIG. 4 from a further perspective;

Fig. 7 is a schematic structural view of the sealing part in fig. 3.

Icon: 1-detecting a tool; 10-detecting instrument; 11-a clamping member; 111-detection chamber; 1111—a first opening; 112-a first part; 113-a second part; 114-third section; 115-a first groove; 1151-a first seal; 1152-a second seal; 116-connection; 117-an adjustment section; 118-a power plant; 119-locating pins; 12-a seal; 121-sealing the cavity; 2-cell; 21-battery cell; 22-a box body; 221-a first sub-tank; 2211—a first sub-wall; 2212—a first sub-sidewall; 222-a second sub-tank; 2221-second sub-wall; 2222-second sub-sidewall; 223-a covering portion; 2231-a first sub-covering portion; 2232-a second sub-covering portion; 224-a positioning portion; a 23-connector; x-a first direction; y-a second direction; z-third direction.

Detailed Description

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

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

The term "plurality" as used herein means two or more (including two), and similarly "multiple" means two or more (including two), and "multiple" means two or more (including two).

In some embodiments, the battery may be a battery pack including a case and a battery cell, the battery cell or battery module being housed in the case.

In some embodiments, the tank may be part of the chassis structure of the vehicle. For example, a portion of the tank may become at least a portion of the floor of the vehicle, or a portion of the tank may become at least a portion of the cross member and the side member of the vehicle.

In some embodiments, the battery may be an energy storage device. The energy storage device comprises an energy storage container, an energy storage electric cabinet and the like.

In the embodiment of the application, the battery cell can be a secondary battery, and the secondary battery refers to a battery cell which can activate the active material in a charging mode to continue to use after the battery cell discharges.

The battery cell may be, but is not limited to, a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, and the like.

As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or other shaped battery cell, and the prismatic battery cell includes a square-case battery cell, a blade-shaped battery cell, a polygonal-prismatic battery cell, such as a hexagonal-prismatic battery cell, etc., and embodiments of the present application are not particularly limited.

Currently, from the development of market situation, batteries have been widely used in electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and various fields such as electric tools, unmanned aerial vehicles, and energy storage devices. With the continuous expansion of the field of battery use, the market demand is also continuously expanding.

The development of battery technology has been accompanied by consideration of various design factors such as energy density, cycle life, discharge capacity, charge-discharge rate, and other performance parameters, and, in addition, as environmental conditions and/or internal conditions of the battery change, reliability of the battery is one of the important factors.

The air tightness of the battery, namely the air tightness of the box body of the battery, directly influences the performances of the battery such as water resistance, dust resistance and the like. In general, for the detection of the air tightness of a battery, the entire battery is detected by a detection instrument for air tightness. However, the whole air tightness detection is carried out on the battery by using an instrument, namely the accumulation of air tightness detection data of all sealing interfaces, whether the battery leaks or not cannot be accurately judged, and the position of the battery leaking cannot be accurately judged, so that the detection result is inaccurate, meanwhile, the air tightness of a single side wall of a box body of the battery is insufficient, the air tightness of other side walls is good, the whole air tightness detection data of the battery is easy to be good, the accuracy of the air tightness detection is influenced, the detection efficiency of a leaking area is determined, and the reliability of the battery is influenced.

Based on the above consideration, the problems of large error of air tightness detection, low efficiency of locking an air tightness leakage area, and influence on the reliability of the battery due to insufficient air tightness of the battery caused by a single area and water and dust entering of the battery are solved. The embodiment of the application provides a detection tool, which comprises a detector and a plurality of clamping pieces. The clamping piece has the detection chamber, detector and detection chamber intercommunication, a plurality of clamping pieces are configured to set up in the outside of the box of battery, the detection chamber of a plurality of clamping pieces is not intercommunicated, divide into a plurality of independent regions with the box of battery and detect, detect the gas tightness in order to realize carrying out the subregion to the box, detect single region, the error that the gas tightness detected has been reduced, the efficiency of locking airtight leakage area has been improved, thereby the gas tightness because single region influences the battery has led to the battery to advance water, the risk of dust intaking, the reliability of battery has been improved.

Referring to fig. 1 and 2, fig. 1 is an exploded view of a battery according to some embodiments of the present application; fig. 2 is a schematic structural view of the case in fig. 1. The battery 2 may further include a case 22, and the battery cells 21 are accommodated in the case 22. The case 22 is used to provide an accommodating space for the battery cell 21, and the case 22 may have various structures. In some embodiments, the case 22 may include a first sub-case 221 and a second sub-case 222, the first sub-case 221 and the second sub-case 222 being covered with each other, the first sub-case 221 and the second sub-case 222 together defining an accommodating space for accommodating the battery cell 21. The first sub-tank 221 may have a hollow structure with an opening at one end, the second sub-tank 222 may have a portion-shaped structure, and the second sub-tank 222 covers the opening side of the first sub-tank 221, so that the first sub-tank 221 and the second sub-tank 222 together define an accommodating space; the first sub-tank 221 and the second sub-tank 222 may be hollow structures each having one side opened, and the opening side of the second sub-tank 222 may be closed to the opening side of the first sub-tank 221.

Please refer to fig. 1 to 3. Fig. 3 is a schematic structural diagram of a detection tool according to some embodiments of the present application. Note that, the viewing angle in fig. 3 is a viewing angle of the connection direction of the first sub-tank and the second sub-tank of the tank. Only a part of the outline of the detection chamber is shown in fig. 3, and the structure of the holder to which the sealing portion is attached is simplified. The embodiment of the application provides a detection tool 1 for detecting the air tightness of a battery 2, wherein the battery 2 comprises a box 22, the box 22 comprises a first sub-box 221 and a second sub-box 222, the first sub-box 221 and the second sub-box 222 are mutually covered and form a cover part 223 matched with each other, and the detection tool 1 comprises a detector 10 and a plurality of clamping pieces 11. The holder 11 has a detection chamber 111, and the detector 10 communicates with the detection chamber 111 for detecting the air pressure of the detection chamber 111. Wherein, the plurality of clamping pieces 11 are configured to be disposed outside the case 22, the plurality of clamping pieces 11 cooperate with different portions of the covering portion 223 to detect the air tightness of the corresponding portions, and the detection cavities 111 of the plurality of clamping pieces 11 are not communicated with each other.

In some embodiments, the first sub-casing 221 and the second sub-casing 222 are mutually covered to form a cover portion 223 that is matched with each other, and the cover portion 223 may have a gap formed when the first sub-casing 221 and the second sub-casing 222 are matched, and the air tightness of the battery 2 is detected, that is, the air tightness of the gap is detected.

In some embodiments, when the first sub-casing 221 and the second sub-casing 222 are mutually covered to form the cover 223, the first sub-casing 221 and the second sub-casing 222 are fixed by bolts or screws, etc., and detecting the air tightness of the battery 2 may further include detecting the air tightness of the connection interface, that is, detecting the air tightness of the connection bolt or the connection screw setting region.

In some embodiments, the battery 2 may include connectors 23 penetrating the inner and outer surfaces of the case 22, the connectors 23 for making electrical connection with external devices. Detecting the air tightness of the battery 2 may also include detecting the air tightness of the interface of the connectors, that is, detecting the air tightness of the area where the connectors 23 are disposed.

In some embodiments, the number of the clamping members 11 may be plural, the plurality of clamping members 11 are disposed around the wall surface of the covering portion 223 far away from the interior of the case 22, the detection chambers 111 of the plurality of clamping members 11 are not communicated with each other, and the covering portion 223 is divided into a plurality of independent areas for air tightness detection.

In some embodiments, the battery 2 may be a square-shell battery 2, where the case 22 of the battery 2 is defined by a first sub-case 221 and a second sub-case 222, where the case 22 includes opposite top and bottom walls, and four side walls sequentially connected end to end and surrounding the bottom wall, one end of the side wall is connected to the bottom wall, the other end is connected to the top wall, and the four side walls divide the covering portion 223 into four corresponding areas. The number of the clamping pieces 11 may be four, the four clamping pieces 11 are respectively and correspondingly disposed on the four side walls, and are respectively and correspondingly matched with the portions of the covering portion 223 on the four side walls, and the four clamping pieces 11 respectively detect the air tightness of the portions of the covering portion 223 on the four side walls.

In some embodiments, the clamping member 11 may be disposed on the outer side of the case 22, so that the gap of the covering portion 223 is in communication with the detecting cavity 111 of the clamping member 11, and the detecting device 10 is in communication with the detecting cavity 111, so that the air tightness of the covering portion 223 is detected by testing the air pressure change inside the detecting cavity 111 by the detecting device 10.

In some embodiments, the air tightness detection of the battery 2 may be performed in the following manner. The clamp 11 is connected to the outside of the case 22, and the slit of the cover 223 is connected to the detection chamber 111 of the clamp 11, the detection gas, which may be a mixed gas of nitrogen and hydrogen, is injected into the detection chamber 111 by the detector 10, and then the gas pressure in the detection chamber 111 is detected by the detector 10. And then standing for a set time which can be 0.5h, 1h, 1.5h and the like, detecting the air pressure in the detection cavity 111 by the detector 10 after standing, comparing the air pressure before and after standing, and judging whether the difference value of the air pressure before and after standing meets the standard threshold value, thereby realizing the air tightness detection of the battery 2.

According to the technical scheme, the detection tool 1 comprises a plurality of clamping pieces 11 and the detector 10 connected with the clamping pieces 11, the clamping pieces 11 are arranged on the outer side of the box 22 of the battery 2 and are respectively matched with different parts of the covering part 223 of the box 22, so that the detection cavity 111 of each clamping piece 11 is communicated with gaps of each part of the covering part 223, the air tightness of different parts of the covering part 223 is respectively detected through the detection cavities 111 of the clamping pieces 11 which are not communicated with each other, the air tightness of the covering part 223 is detected in a region, the detection of a single region is realized, the air tightness detection error is reduced, the efficiency of locking the air tightness leakage region can be improved, the air tightness detection of the battery 2 is more effectively realized, the risk that the air tightness of the battery 2 is influenced by the single region, the water inlet and dust inlet of the battery 2 is reduced, and the reliability of the battery 2 is improved.

Please refer to fig. 1 to 6. FIG. 4 is a schematic view of the clamping member in FIG. 3; FIG. 5 is a schematic view of the connection of the clamping member and the covering portion in FIG. 4; fig. 6 is a schematic view of the clamping member of fig. 4 from another perspective. In fig. 4, the first portion and the second portion are not connected to the lid portion, and in this case, there is no gap between the first portion and the second portion in the first direction, and the outline of the detection chamber is partially omitted in fig. 4. Fig. 5 is a schematic view of the clamping member from a third direction, the connecting portion is hidden in fig. 5, and a gap is left between the first groove and the first sealing member in the figure for convenience in displaying the first groove and the first sealing member. Fig. 6 is a schematic view of the clamping member from the second direction, and the broken line portion is the first groove and the first sealing member blocked by the first portion and the second portion. In some embodiments, the clamping member 11 includes a first portion 112, a second portion 113 and a third portion 114, the first portion 112 and the second portion 113 are spaced apart in the first direction X, one ends of the same sides of the first portion 112 and the second portion 113 in the second direction Y are respectively connected to the third portion 114, the other ends of the same sides of the first portion 112 and the second portion 113 are formed with a first opening 1111 into which the covering portion 223 is inserted, and the first portion 112, the second portion 113 and the third portion 114 together define a detection chamber 111 having one end opened, wherein the first direction X and the second direction Y intersect.

In some embodiments, the first portion 112, the second portion 113, and the third portion 114 may each be plate-like members.

In some embodiments, the first direction X may be represented by a direction indicated by the letter X and the second direction Y may be represented by a direction indicated by the letter Y.

In some embodiments, the first direction X and the second direction Y may be perpendicular to each other.

In some embodiments, the first direction X may be a connection direction of the first portion 112 and the second portion 113, and the second direction Y may be a connection direction of the first portion 112 and the third portion 114, or a connection direction of the second portion 113 and the third portion 114.

In some embodiments, the first portion 112 and the third portion 114 may be integrally formed, and the third portion 114 and the second portion 113 may be connected by bolts or welding, or the like. Alternatively, in some embodiments, the second portion 113 and the third portion 114 may be integrally formed, and the third portion 114 and the first portion 112 may be connected by bolts or welding, or the like.

In some embodiments, the first portion 112 and the second portion 113 are spaced apart in the first direction X, i.e., the first portion 112 and the second portion 113 are spaced apart in the first direction X, forming a gap space in the first direction X. One end of the first portion 112 and the second portion 113 on the same side in the second direction Y is connected to the third portion 114, wherein the third portion 114 closes the opening of the side of the gap space in the second direction Y to form the detection chamber 111, and the opening of the other side of the gap space in the second direction Y is the first opening 1111, that is, the first portion 112, the second portion 113 and the third portion 114 together define the detection chamber 111 having one end opened in the second direction Y.

In some embodiments, when the clamping member 11 is connected to the covering portion 223, the corresponding region to be detected of the covering portion 223 is inserted into the detection cavity 111 through the first opening 1111, and the slit of the covering portion 223 is communicated with the detection cavity 111.

According to the technical scheme of the embodiment of the application, the first part 112 and the second part 113 are arranged at intervals in the first direction X, the third part 114 is connected with one end of the same side of the first part 112 and the second part 113, and the openings of the first part 112 and the second part 113 on the side are blocked, so that the first part 112, the second part 113 and the third part 114 jointly define the detection cavity 111 with the first opening 1111 at the other end of the same side of the first part 112 and the second part 113, the detection cavity 111 of the clamping piece 11 is easy to process, and the clamping piece 11 is convenient to cooperate with the covering part 223 of the box body 22.

Please refer to fig. 1 to 6. In some embodiments, the first portion 112 and the second portion 113 are used to clamp the covering portion 223.

In some embodiments, the cover 223 may be formed by the first sub-tank 221 and the second sub-tank 222 together. The first sub-housing 221 has a first sub-cover 2231, the second sub-housing 222 has a second sub-cover 2232, the first sub-housing 221 and the second sub-housing 222 may be rectangular with openings, the first sub-housing 221 has a first sub-wall 2211 and four first sub-side walls 2212 surrounding the first sub-wall 2211, the first sub-cover 2231 may be disposed on the four first sub-side walls 2212 and surrounding the openings, the second sub-housing 222 has a second sub-wall 2221 and four second sub-side walls 2222 surrounding the second sub-wall 2221, and the second sub-cover 2232 may be disposed on the four second sub-side walls 2222 and surrounding the openings.

In some embodiments, when the first sub-tank 221 and the second sub-tank 222 are mated, the four first sub-side walls 2212 of the first sub-tank 221 and the four second sub-side walls 2222 of the second sub-tank 222 are in one-to-one correspondence and are connected, the opening of the first sub-tank 221 and the opening of the second sub-tank 222 are just joined to form four side walls of the tank 22 together, the first sub-wall 2211 of the first sub-tank 221 may be used as the top wall of the tank 22, the second sub-wall 2221 of the second sub-tank 222 may be used as the bottom wall of the tank 22, and the first sub-cover 2231 and the second sub-cover 2232 are mated to form the cover 223.

In some embodiments, the first portion 112 and the second portion 113 sandwich the covering portion 223 when the covering portion 223 is inserted into the detection cavity 111 through the first opening 1111. That is, the first portion 112 may be attached to an end surface of the first sub-covering portion 2231 away from the second sub-covering portion 2232, and the second portion 113 may be attached to an end surface of the second sub-covering portion 2232 away from the first sub-covering portion 2231, so that the first portion 112 and the second portion 113 may commonly sandwich the covering portion 223.

In some embodiments, the first portion 112 and the second portion 113 may be movably disposed along the first direction X. When the first portion 112 and the second portion 113 are required to clamp the covering portion 223, the first portion 112 and the second portion 113 are taken out, the first portion 112 and the second portion 113 are separated from each other along the first direction X, the first portion 112 and the second portion 113 are placed at two ends of the covering portion 223 in the first direction X, the covering portion 223 can be provided with a hole channel for matching the bolt, and the bolt sequentially penetrates through the first portion 112, the covering portion 223 and the second portion 113 to lock the first portion 112, the second portion 113 and the covering portion 223.

According to the technical scheme of the embodiment of the application, the first part 112 and the second part 113 clamp the cover part 223 of the box 22, so that the clamping piece 11 is convenient to be matched with the cover part 223, and the matching stability of the clamping piece 11 and the cover part 223 is improved.

Please refer to fig. 1 to 6. In some embodiments, the clamping member 11 further comprises a first sealing member 1151, and in the first direction X, two opposite walls of the detection chamber 111 are provided with first grooves 115, and two first grooves 115 are provided with first sealing members 1151.

In some embodiments, in the first direction X, two opposite walls of the detection cavity 111 are provided with the first groove 115, that is, in the first direction X, a wall of the first portion 112 near the second portion 113 and a wall of the second portion 113 near the first portion 112 are provided with the first groove 115.

In some embodiments, the clamping member 11 further includes a first seal 1151, and the first seal 1151 may be a rubber ring, a rubber pad, or the like.

In some embodiments, the first seal 1151 is disposed in the first groove 115, and the first seal 1151 may be just flush with a wall surface at an opening of the first groove 115, or may protrude from the opening of the first groove 115.

In some embodiments, when the cover 223 is connected to the clamping member 11, the cover 223 enters the detection cavity 111 through the first opening 1111, and the first seal 1151 in the first groove 115 of the first portion 112 and the first seal 1151 in the first groove 115 of the second portion 113 abut against two end surfaces of the cover 223 in the first direction X, respectively, and the first opening 1111 of the detection cavity 111 is sealed by the first seals 1151 of both the first portion 112 and the second portion 113.

According to the technical scheme of the embodiment of the application, the two first sealing pieces 1151 are respectively arranged on the two first sealing pieces 1151, when the clamping piece 11 is connected with the covering part 223, the two first sealing pieces 1151 are respectively abutted against the two ends of the covering part 223 to seal the first opening 1111 of the detection cavity 111, so that the air tightness of the detection cavity 111 is improved, the risk that the detection cavity 111 leaks when the covering part 223 is arranged in the detection cavity 111 for air tightness detection, and thus the inaccurate air tightness detection risk is caused, and the accuracy of the air tightness detection of the detection cavity 111 is improved.

Please refer to fig. 1 to 6. In some embodiments, the first portion 112, the second portion 113, and the third portion 114 each extend in a third direction Z in which the length of the first groove 115 is the same as the length of the detection chamber 111, wherein the third direction Z intersects a plane in which the first direction X and the second direction Y lie.

In some embodiments, the lengths of the first portion 112 and the second portion 113 in the third direction Z may be the same, and the first portion 112 and the second portion 113 may be disposed at intervals along the first direction X such that the length of the detection chamber 111 in the third direction Z is the same as the length of any one of the first portion 112 and the second portion 113 in the third direction Z, the first groove 115 of the first portion 112 extends in the third direction Z to communicate with both end surfaces of the first portion 112 in the third direction Z, and the first groove 115 of the second portion 113 extends in the third direction Z to communicate with both end surfaces of the second portion 113 in the third direction Z.

In some embodiments, the lengths of the first portion 112 and the second portion 113 in the third direction Z may be different, taking the first direction X as the projection direction, the projection of the second portion 113 may completely cover the projection of the first portion 112, the length of the detection cavity 111 in the third direction Z may be the same as the length of the first portion 112 in the third direction Z, the first groove 115 of the first portion 112 extends along the third direction Z to communicate with two end surfaces of the first portion 112 in the third direction Z, and the first groove 115 of the second portion 113 and the first groove 115 of the first portion 112 are disposed opposite to each other in the first direction X.

In some embodiments, both ends of the detection chamber 111 in the third direction Z can be blocked by further seals or further blocking elements, so that only a single opening of the detection chamber 111 in the second direction Y, i.e. the first opening 1111 for the insertion of the cover 223, is present.

According to the technical scheme provided by the embodiment of the application, in the third direction Z, the length of the first groove 115 is the same as that of the detection cavity 111, so that the two first sealing pieces 1151 can completely seal the first opening 1111 of the detection cavity 111 in the third direction Z, the risk of inaccurate air tightness detection caused by leakage of the detection cavity 111 when the cover part 223 is arranged in the detection cavity 111 for air tightness detection is better reduced, and the accuracy of air tightness detection of the detection cavity 111 is improved.

Please refer to fig. 1 to 6. In some embodiments, the clamping member 11 further includes a second seal 1152, the second seal 1152 being disposed in the detection chamber 111, the second seal 1152 being coupled to each of the first portion 112, the second portion 113, the third portion 114, and the two first seals 1151.

In some embodiments, the clamping member 11 may include a second seal 1152, and the second seal 1152 may be a rubber pad, a sealing ring, or the like.

In some embodiments, when the cover 223 is connected to the clamping member 11, the cover 223 is inserted into the detection cavity 111, and the first sealing members 1151 in the two first grooves 115 abut against two end surfaces of the cover 223 in the first direction X, respectively. The second seal 1152 is connected to the first portion 112, the second portion 113, the third portion 114, and the two first seals 1151, that is, one end of the second seal 1152 in the first direction X is in contact with an end surface of the first portion 112 near the second portion 113, and the other end is in contact with an end surface of the second portion 113 near the first portion 112, that is, two ends of the second sealant in the first direction X are in contact with two inner walls of the detection chamber 111 in the first direction X, respectively. One end of the second sealing member 1152 in the second direction Y in the direction of approaching from the first portion 112 to the second portion 113 along the first direction X sequentially abuts against the first sealing member 1151 protruding in the first groove 115 of the first portion 112, one end of the covering portion 223 approaching the third portion 114, and the first sealing member 1151 protruding in the first groove 115 of the second portion 113.

In some embodiments, the first seal 1151 in the first groove 115 may be flush with a wall surface at an opening of the first groove 115, and one end of the second seal 1152 in the second direction Y abuts against an end of the covering portion 223 near the third portion 114, and the other end abuts against the third portion 114, so as to divide the detection cavity 111 into two independent chambers.

In some embodiments, the side wall of the case 22 may be set to have a larger length or width, and when the clamping member 11 is connected to the cover 223 and detects the air tightness of the cover 223 corresponding to the side wall through the detection cavity 111, the gap area corresponding to the cover 223 is also larger, and the detection cavity 111 detects the gap area corresponding to the cover 223, so that it is inconvenient to quickly determine the area of air tightness leakage, and the detection cavity 111 is divided into two or more independent areas through the second sealing member 1152, that is, the gap corresponding to the cover 223 of one side wall of the case 22 detects the air tightness through several detection areas respectively, so that the efficiency of locking the air tightness leakage area can be improved.

According to the technical scheme of the embodiment of the application, the second sealing member 1152 is arranged in the detection cavity 111, the detection cavity 111 is divided into two or more independent cavities through the sealing member, so that when the clamping member 11 detects the air tightness of the part corresponding to the covering part 223, the partial area is divided into two or more independent areas for detection, the air tightness of different areas of the part corresponding to the covering part 223 is detected through the independent cavities respectively, the air tightness is detected in the partial areas, the detection of the air tightness is further realized, the detection of a single area is realized, the air tightness detection error is reduced, the efficiency of locking the air tightness leakage area is improved, the air tightness detection of the battery 2 is more effectively realized, the risk of water inlet and dust inlet of the battery 2 caused by the influence of the air tightness of the battery 2 caused by the single area is reduced, and the reliability of the battery 2 is improved.

In some embodiments, the second seals 1152 are configured in multiple and spaced apart along the third direction Z.

In some embodiments, a plurality of second seals 1152 may be spaced apart along the third direction Z, dividing the detection chamber 111 into a plurality of independent detection regions in the third direction Z.

In some embodiments, the plurality of second seals 1152 may be spaced along the third direction Z by a fixed spacing distance, or may be spaced along the third direction Z to divide the detection chamber 111 equally into several identical detection regions.

In some embodiments, the number of second seals 1152 may be two, three, four, etc.

According to the technical effect of the embodiment of the application, the plurality of second sealing members 1152 are arranged at intervals along the third direction Z, so that the detection cavity 111 is divided into a plurality of independent cavities in the third direction Z, when the clamping member 11 detects the air tightness of the corresponding part of the covering part 223, the partial area is divided into a plurality of independent areas for detection, the air tightness of different areas of the part of the covering part 223 is detected through the mutually-unconnected cavities respectively, the air tightness is detected in the different areas, the detection of the single area is further realized, the error of the air tightness detection is reduced, the efficiency of locking the air tightness leakage area is improved, the air tightness detection of the battery 2 is more effectively carried out, the risk of water inlet and dust inlet of the battery 2 caused by the influence of the air tightness of the battery 2 by the single area is reduced, and the reliability of the battery 2 is improved.

Please refer to fig. 1 to 6. In some embodiments, the clamping member 11 further includes two connection portions 116, the two connection portions 116 are disposed at two ends of the first portion 112 in the third direction Z, respectively, and the connection portions 116 are configured to block a gap at a corner of the covering portion 223.

In some embodiments, the connection 116 may be a block-like structure.

In some embodiments, the connecting portion 116 may be connected to the first portion 112, one end of the connecting portion 116 extends along the third direction Z and is connected to the first portion 112, the other end of the connecting portion 116 extends along the second direction Y and is used for connecting to the connecting portion 116 of the other clamping member 11, the two connecting portions 116 may be connected by bolts, the connecting portion 116 may be provided with holes penetrating through two end surfaces in the first direction X, and the bolts penetrate through the holes of the two connecting portions 116 to achieve connection. That is, the connection 116 resembles an adapter for connection between two clamping members 11.

In some embodiments, when the cover 223 is connected to the detection tool 1, the case 22 may have four sidewalls, that is, the four sidewalls respectively correspond to the four areas of the cover 223, and the connection between the sidewalls corresponds to the corner of the cover 223. The detection tool 1 may include four clamping members 11, the four clamping members 11 may be connected with four side walls respectively, in two adjacent clamping members 11, the connection portion 116 of one clamping member 11 may overlap with the connection portion 116 of the other clamping member 11 in the first direction X, the two connection portions 116 may be connected through bolts, and the two connection portions 116 jointly block a gap at a corner of the corresponding covering portion 223.

According to the technical scheme of the embodiment of the application, the connecting part 116 is arranged at one end of the first part 112 in the third direction Z, when the clamping piece 11 is connected with the covering part 223, the connecting part 116 is correspondingly connected with the corner of the covering part 223, and the area of the covering part 223 at the corner is blocked by the connecting part 116, so that the influence of the area of the covering part 223 at the corner on the air tightness detection is reduced, and the accuracy of the air tightness detection is improved.

Please refer to fig. 1 to 6. In some embodiments, the connecting portion 116 is movably connected with the first portion 112, and in the third direction Z, the connecting portion 116 is movable in a direction away from or toward the first portion 112.

In some embodiments, the connecting portion 116 may be movably connected to the first portion 112, where a movable rod may be provided, and two ends of the movable rod are respectively connected to the connecting portion 116 and the first portion 112, where the movable rod extends along the third direction Z, and the movable rod may be retracted into or extended out of the first portion 112 to drive the connecting portion 116 to approach or separate from the first portion 112 along the third direction Z.

In some embodiments, when the connecting portion 116 is attached to the first portion 112, the opening of the detection chamber 111 in the third direction Z may be blocked by the connecting portion 116.

According to the technical scheme of the embodiment of the application, the connecting part 116 can move in the direction away from or close to the first part 112 in the third direction Z, and when the clamping piece 11 is connected with the covering part 223, the clamping piece 11 is conveniently installed by changing the positions of the connecting part 116 and the first part 112, so that the convenience of assembly is improved.

Please refer to fig. 1 to 7. Fig. 7 is a schematic structural view of the sealing part in fig. 3. In some embodiments, the detection tool 1 further includes a sealing portion 12, at least one clamping member 11 is provided with the sealing portion 12, the sealing portion 12 is movably connected with the first portion 112 along the second direction Y, and a sealing cavity 121 for accommodating the connector 23 on the outer surface of the box 22 is provided in the sealing portion 12.

In some embodiments, the seal 12 may be a box-like structure having a cavity and an opening, the opening and the cavity communicating.

In some embodiments, the interface of the connector 23 may have a gap, and when the clamping member 11 is used to connect the case 22 to test the gap of the cover 223, the gap of the interface of the connector 23 may be covered together, so that there is a risk that the gap of the interface of the connector 23 will be affected when the air tightness of the cover 223 is tested. Accordingly, the sealing portion 12 is provided, the interface of the connector 23 is connected by the sealing portion 12, and the connector 23 is inserted into the cavity through the opening, so that the region corresponding to the connector 23 is accommodated in the sealing cavity 121.

In some embodiments, the sealing portion 12 may be movably connected with the first portion 112 along the second direction Y, the sealing portion 12 may be located at an end of the first portion 112 away from the third portion 114, and the sealing portion 12 may be close to or remote from the first portion 112 along the second direction Y. When the cover portion 223 is connected to the holder 11, the area of the sealing portion 12 and the connector 23 is connected, and then the first portion 112 is moved to connect the first portion 112 and the cover portion 223, and the positions of the first portion 112 and the sealing portion 12 are fixed, so that the interface between the sealing portion 12 and the connector 23 is fixed.

According to the technical scheme provided by the embodiment of the application, the sealing part 12 is arranged, the connector 23 on the outer surface of the box body 22 is accommodated through the sealing cavity 121 of the sealing part 12, so that the risk of inaccurate air tightness detection caused by interface leakage of the connector 23 when the detection cavity 111 detects air tightness of the cover part 223 is reduced, the influence of the interface of the connector 23 is reduced, and the accuracy of air tightness detection is improved.

Please refer to fig. 1 to 6. In some embodiments, the clamping member 11 further includes an adjusting portion 117, one end of the adjusting portion 117 is connected to the sealing portion 12, and the other end is connected to the clamping member 11, and the adjusting portion 117 is configured to drive the sealing portion 12 to approach or separate from the clamping member 11 along the second direction Y.

In some embodiments, the adjustment portion 117 may be a threaded rod or other rod.

In some embodiments, the adjustment portion 117 is exemplified by a threaded rod. One end of the adjusting portion 117 may be connected to the sealing portion 12, the other end may be disposed through the first portion 112 and the third portion 114, at least one of the first portion 112 and the third portion 114 has a threaded hole matched with the adjusting portion 117, and the adjusting portion 117 is rotated to move the adjusting portion 117 by matching the threads of the adjusting portion 117 with the threaded hole, so as to drive the sealing portion 12 to approach or separate from the clamping member 11 along the second direction Y.

According to the technical scheme provided by the embodiment of the application, the clamping piece 11 and the sealing part 12 are connected through the adjusting part 117, the distance between the sealing part 12 and the clamping piece 11 can be adjusted, and the convenience of connecting the clamping piece 11 and the sealing part 12 to the box body 22 is improved.

Please refer to fig. 1 to 6. In some embodiments, the clamping member 11 is further provided with a power device 118, the power device 118 being configured to move the clamping member 11 in the second direction Y.

In some embodiments, the power device 118 may be a cylinder or a motor, or the like.

In some embodiments, the power device 118 may be disposed on an end surface of the third portion 114 remote from the first portion 112 or the second portion 113.

In some embodiments, the power device 118 may be disposed on the clamping member 11, where the power device 118 is connected to a power rod, and an end of the power rod away from the power device 118 is connected to an external mechanism, and the clamping member 11 is driven to move by a reaction force.

In some embodiments, the power device 118 is mounted on an external mechanism, and the power device 118 and the clamping member 11 are connected through a power rod, so as to drive the clamping member 11 to move.

In some embodiments, when the clamping member 11 is connected to the covering portion 223, the clamping member 11 is lifted to be located on the same horizontal plane with the covering portion 223, and then the power device 118 drives the clamping member 11 to move along the second direction Y, so that the clamping member 11 approaches to the covering portion 223, thereby connecting the clamping member 11 with the covering portion 223. It should be noted that, the second direction Y is a connection direction of the first portion 112 and the third portion 114, when the case 22 is four sidewalls, the four sidewalls are respectively provided with four clamping members 11, the second direction Y corresponding to each clamping member 11 is different, that is, the four clamping members 11 are respectively provided on the four sidewalls of the case 22 in a one-to-one correspondence manner, and the power device 118 drives each clamping member 11 to approach each sidewall of the case 22. When the clamping members 11 are required to be removed after detection, the power device 118 drives each clamping member 11 to be separated from each side wall of the box body 22.

According to the technical scheme provided by the embodiment of the application, the power device 118 is arranged, and in the mounting process of the clamping piece 11, the clamping piece 11 is driven to move along the second direction Y by the power device 118, so that the clamping piece 11 is matched with the covering part 223, and the mounting convenience is improved.

Please refer to fig. 1 to 6. In some embodiments, the number of power devices 118 is plural, and the power devices 118 are disposed at intervals along the third direction Z on the clamping member 11.

In some embodiments, the power devices 118 may be disposed at intervals along the third direction Z at the third portion 114. The power devices 118 may be uniformly distributed in the third portion 114 along the third direction Z, may be symmetrically disposed along a midpoint of a length of the third portion 114 in the third direction Z, or may be disposed at a middle portion and two ends of the third portion 114 in the third direction Z, respectively.

According to the technical scheme provided by the embodiment of the application, the power devices 118 are arranged at intervals along the third direction Z, so that the stress is more uniform in the process of moving the clamping piece 11, and the stability of moving the clamping piece 11 is improved.

Please refer to fig. 1 to 6. In some embodiments, the outer surface of the case 22 is provided with a positioning portion 224, and the clamping member 11 is further provided with a positioning pin 119, the positioning pin 119 being configured to be inserted through the first portion 112 and the second portion 113 along the first direction X for mating connection with the positioning portion 224.

In some embodiments, the covering portion 223 may be provided with a positioning portion 224, and the positioning portion 224 may be a hole, and the hole penetrates the first covering portion 223 and the second sub-covering portion 2232.

In some embodiments, the clamping member 11 may be provided with a positioning pin 119, the positioning pin 119 penetrating the first portion 112 and the second portion 113 in the second direction Y. When the cover portion 223 is connected to the holder 11, the positions of the positioning pin 119 and the positioning portion 224 are matched to perform the predetermined positioning, and after the positioning pin 119 and the positioning portion 224 are connected in a matched manner, that is, after the positioning pin 119 penetrates into the positioning portion 224, the cover portion 223 is connected to the holder 11.

According to the technical scheme provided by the embodiment of the application, the locating pin 119 is arranged, so that the clamping piece 11 can be conveniently located in advance when being connected with the covering part 223, and the convenience and accuracy of installation are improved.

Please refer to fig. 1 to 6. According to some embodiments of the present application, the clamping member 11 includes a first portion 112, a second portion 113 and a third portion 114, the first portion 112 and the second portion 113 are spaced apart along the first direction X, one end of the same side of the first portion 112 and the second portion 113 is connected to the third portion 114, the other end of the same side of the first portion 112 and the second portion 113 forms a first opening 1111, and the first portion 112, the second portion 113 and the third portion 114 together define a detection chamber 111 having the first opening 1111.

In some embodiments, opposing surfaces of the first portion 112 and the second portion 113 are provided with a first groove 115, and a first seal 1151 is disposed within the first groove 115. When the lid 223 of the case 22 is inserted into the detection chamber 111 through the first opening 1111, the first seal 1151 of the first portion 112 and the first seal 1151 of the second portion 113 sandwich the first sub-lid 2231 and the second sub-lid 2232 of the lid 223.

In some embodiments, the first portion 112, the second portion 113, and the third portion 114 each extend along the third direction Z, and both ends of the first portion 112 are provided with the connection portions 116. The connecting portion 116 blocks two openings of the detection cavity 111 in the third direction Z, and the connecting portion 116 may be movably disposed with the first portion 112 along the third direction Z.

In some embodiments, the covering portion 223 is divided into four areas by four side walls of the box 22, the detection tool 1 includes four clamping pieces 11, the four clamping pieces 11 are connected with the four areas of the covering portion 223 respectively, in the connection process, the connecting portion 116 at one end of one clamping piece 11 is connected with the connecting portion 116 of the adjacent clamping piece 11, the connecting portion 116 at the other end is connected with the connecting portion 116 of the adjacent clamping piece 11, the four clamping pieces 11 are enclosed on the outer surface of the box 22, and the connecting portion 116 also realizes that the detection cavities 111 between the four clamping pieces 11 are not communicated with each other.

In some embodiments, the clamping member 11 is further provided with a power device 118, and the power device 118 can drive the clamping member 11 to approach or separate from the box 22 along the second direction Y corresponding to the power device, so as to facilitate connection and separation with the covering portion 223.

In some embodiments, the clamping member 11 further includes a second sealing member 1152, where the second sealing member 1152 is disposed in the detection chamber 111, and one end of the second sealing member 1152 in the second direction Y abuts against the covering portion 223 and the first sealing member 1151, and the other end abuts against the third portion 114, so as to divide the detection chamber 111 into two independent chambers.

According to the technical scheme of the embodiment of the application, the plurality of clamping pieces 11 are arranged on the outer side of the box body 22 of the battery 2 and are respectively matched with different parts of the cover part 223 of the box body 22, so that the detection cavity 111 of each clamping piece 11 is communicated with gaps of each part of the cover part 223, the airtightness of different parts of the cover part 223 is respectively detected through the detection cavities 111 of the plurality of clamping pieces 11 which are not communicated with each other, the detection of the airtightness of the cover part 223 is realized in a divided mode, the detection of a single area is realized, the airtightness detection error is reduced, the efficiency of locking the airtight leakage area is improved, the airtightness of the battery 2 is more effectively detected, the risk of water inlet and dust inlet of the battery 2 due to the influence of the single area on the airtightness of the battery 2 is reduced, and the reliability of the battery 2 is improved.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. A detect frock for detect the gas tightness of battery, the battery includes the box, the box includes first sub-box and second sub-box, first sub-box with the second sub-box covers mutually and forms mutually supporting lid portion, its characterized in that, detect the frock and include:

A detector;

the clamping pieces are provided with detection cavities, and the detector is communicated with the detection cavities and is used for detecting the air pressure of the detection cavities;

The clamping pieces are configured to be arranged on the outer side of the box body, the clamping pieces are matched with different parts of the covering part to detect the air tightness of the corresponding parts, and the detection cavities of the clamping pieces are not communicated with each other.

2. The inspection tool according to claim 1, wherein the clamping member comprises a first portion, a second portion and a third portion, the first portion and the second portion are spaced apart in a first direction, one ends of the same sides of the first portion and the second portion in a second direction are respectively connected with the third portion, a first opening into which the covering portion is inserted is formed at the other ends of the same sides of the first portion and the second portion, and the first portion, the second portion and the third portion together define the inspection cavity having one end opening, wherein the first direction and the second direction intersect.

3. The inspection tool of claim 2 wherein the first portion and the second portion are configured to clamp the covering portion.

4. The inspection tool according to claim 2, wherein the clamping member further comprises a first sealing member, and in the first direction, two opposite wall surfaces of the inspection cavity are provided with first grooves, and two first grooves are provided with the first sealing member.

5. The inspection tool of claim 4 wherein the first, second and third portions each extend in a third direction in which the length of the first groove is the same as the length of the inspection cavity, wherein the third direction intersects a plane in which the first and second directions lie.

6. The inspection tool according to claim 5, wherein the clamping member further comprises a second sealing member disposed in the inspection cavity, the second sealing member being connected to the first portion, the second portion, the third portion and both of the first sealing members.

7. The inspection tool of claim 6 wherein said second seal is configured in a plurality and spaced apart along said third direction.

8. The inspection tool according to claim 2, wherein the clamping member further comprises two connection portions respectively disposed at two ends of the first portion in the third direction, the connection portions being configured to block a gap at a corner of the covering portion.

9. The inspection tool according to claim 8, wherein the connecting portion is movably connected to the first portion, and in the third direction, the connecting portion is movable in a direction away from or toward the first portion.

10. The inspection tool according to claim 2, further comprising a sealing portion, wherein at least one of the clamping members is provided with the sealing portion, the sealing portion is movably connected with the first portion along the second direction, and a sealing cavity for accommodating the connector on the outer surface of the box body is provided in the sealing portion.

11. The inspection tool according to claim 10, wherein the clamping member further comprises an adjusting portion, one end of the adjusting portion is connected to the sealing portion, the other end of the adjusting portion is connected to the clamping member in a penetrating manner, and the adjusting portion is configured to drive the sealing portion to approach or separate from the clamping member along the second direction.

12. The inspection tool according to claim 2, wherein the clamping member is further provided with a power device configured to drive the clamping member to move in the second direction.

13. The inspection tool according to claim 12, wherein the number of power devices is plural, and the power devices are disposed on the clamping members at intervals along the third direction.

14. The inspection tool according to claim 2, wherein the outer surface of the box body is provided with a positioning portion, the clamping member is further provided with a positioning pin, and the positioning pin is configured to penetrate through the first portion and the second portion along the first direction and is used for being connected with the positioning portion in a matching manner.