Battery sealing performance detection device

Abstract

The utility model discloses a battery leakproofness detection device, which comprises a sealed cabin, an end cover, a negative pressure generation assembly and a leakproofness detection unit, the sealed cabin is of a strip-shaped structure, the end part of the sealed cabin is provided with an inlet and outlet, the inlet and outlet accommodates a cavity through which a battery cell enters and exits the sealed cabin, and the strip-shaped structure extends along the length direction of the battery cell; the end cover is used for sealing the access; the negative pressure generation assembly is used for performing negative pressure extraction on the cavity; and the sealing performance detection unit detects the sealing performance of the battery by detecting gas components in the chamber. According to the battery sealing performance detection device, the opening area of the sealed cabin can be reduced, the sealing effect can be improved, and the detection accuracy is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery detection equipment, especially relates to a battery sealing property detection device. BACKGROUND

[0002] The battery sealing property detection device is a detection device for detecting the sealing property of a battery, and can detect whether the battery cell leaks by detecting whether there is leaked gas in the sealed environment in which the battery cell is placed.

[0003] The existing sealing property detection device for the battery is usually a box structure with a flip top, and multiple battery cells are placed in the box, and the flip area is large, usually about the sum of the areas of the maximum surfaces of the multiple battery cells.

[0004] However, due to the large opening area of the inner cavity of the box, the sealing property is poor, which easily leads to the problem of external gas leakage into the inner cavity of the box, affecting the detection accuracy. SUMMARY

[0005] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a battery sealing property detection device, which can reduce the opening area of the sealed cabin, improve the sealing effect, and thus improve the detection accuracy.

[0006] According to the battery sealing property detection device provided in the embodiment of the utility model, the sealed cabin is in a strip-shaped structure, and an entrance and exit is formed at the end of the sealed cabin, the entrance and exit accommodates the battery cell to enter and exit the chamber of the sealed cabin, and the strip-shaped structure extends along the length direction of the battery cell.

[0007] The end cover is used for sealing the entrance and exit.

[0008] The end cover is used for sealing the entrance and exit.

[0009] The negative pressure generating assembly is used for drawing negative pressure in the chamber.

[0010] The sealing property detection unit detects the sealing property of the battery by detecting the gas composition in the chamber.

[0011] According to the battery sealing property detection device provided in the embodiment of the utility model, at least the following beneficial effects are achieved:

[0012] 1. The utility model discloses a sealed cabin in a strip-shaped structure, an entrance and exit is formed at the end of the sealed cabin, the entrance and exit accommodates the battery cell to enter and exit the chamber of the sealed cabin, and the strip-shaped structure extends along the length direction of the battery cell.

[0013] 2. The utility model discloses a cover is used for sealing the entrance and exit, thereby, the cover can seal the chamber, and the sealed environment is formed in the chamber.

[0014] 3. The utility model discloses a negative pressure generating component is used for the chamber draws negative pressure, thereby, the gas in the chamber is conveniently separated, and the negative pressure environment that the battery leak detection needs is formed in the chamber.

[0015] 4. The utility model discloses a sealing detection unit is detected the gas composition in the chamber to detect the battery sealing, thereby, the chamber is convenient fast accurate judgement whether the battery leak gas, and further, be favorable to improve the accuracy of detection.

[0016] According to some embodiments of the utility model, the battery fixture is used to transport the battery into the chamber.

[0017] Beneficially, the utility model discloses a battery fixture, and the battery fixture is used to transport the battery into the chamber, thereby, the battery is conveniently supported and transported into and out of the chamber.

[0018] According to some embodiments of the utility model, one end of the battery fixture extends into the chamber, and the cover is arranged at the other end of the battery fixture.

[0019] Beneficially, the utility model discloses that one end of the battery fixture extends into the chamber, and the cover is arranged at the other end of the battery fixture, thereby, when the battery fixture transports the battery into the chamber, the battery fixture can drive the cover to close and seal the entrance and exit, and further, the cover is more convenient and fast to close and seal the entrance and exit.

[0020] According to some embodiments of the utility model, a chute extending along the length direction of the sealed cabin is arranged in the chamber, and the battery fixture slides in cooperation with the chute.

[0021] Beneficially, the utility model discloses that a chute extending along the length direction of the sealed cabin is arranged in the chamber, and the battery fixture slides in cooperation with the chute, thereby, the movement of the battery fixture in the chamber is more stable, and the battery fixture is beneficial to the transportation of the battery.

[0022] According to some embodiments of the utility model, a roller is arranged at the bottom of the battery fixture, and the roller is used to support the rolling of the battery fixture in the chamber.

[0023] Beneficially, the utility model discloses that a roller is arranged at the bottom of the battery fixture, and the roller is used to support the rolling of the battery fixture in the chamber, thereby, the frictional resistance between the battery fixture and the sealed cabin is reduced, and the movement of the battery fixture in the chamber is more smooth and labor-saving.

[0024] According to some embodiments of the utility model, still include frame, one end of electric core fixture stretches into the chamber, the other end of electric core fixture is provided with slide seat, slide seat is arranged on frame.

[0025] Beneficially, the utility model discloses a frame is set, one end of electric core fixture stretches into the chamber, the other end of electric core fixture is provided with slide seat, and slide seat is arranged on frame, so that slide seat can support one end located outside the chamber, and further, electric core fixture is more stable.

[0026] According to some embodiments of the utility model, still include drive assembly, drive assembly is used to drive electric core fixture to go in and out chamber.

[0027] Beneficially, the utility model discloses a drive assembly is set, and drive assembly is used to drive electric core fixture to go in and out chamber, so that manual movement electric core fixture is exempted, and further, the conveying efficiency of electric core fixture to electric core is improved.

[0028] According to some embodiments of the utility model, the chamber is provided with multiple, and multiple chamber is side by side arrangement.

[0029] Beneficially, the utility model discloses multiple chambers are set, and multiple chamber is side by side arrangement, so that the detection of multiple electric cores can be realized each time, and further, the detection efficiency is improved.

[0030] According to some embodiments of the utility model, one chamber is used to detect one electric core, and the sealing detection unit is suitable for VOC detection, and the battery is lithium battery.

[0031] Beneficially, the utility model discloses one chamber is used to detect one electric core, and the sealing detection unit is suitable for VOC detection, and the battery is lithium battery, and it can be understood that VOC detection refers to the detection of volatile organic compounds, i.e. the detection of leakage gas of electric core, and one electric core is detected in each chamber, and if leakage gas is detected, the electric core with leakage problem in the chamber can be accurately judged, and the electric core with leakage problem can be quickly determined, and there is no need to further check the electric core with leakage, which is beneficial to improve the efficiency.

[0032] According to some embodiments of the utility model, the sealing cabin is provided with infrared detection pieces at one end close to the entrance, and the infrared detection pieces are used to detect the position of the end cover.

[0033] Beneficially: the utility model discloses a infrared detection piece is arranged on the one end of sealed cabin close to the entrance and exit, and the infrared detection piece is used for detecting the position of end cover, thereby, it is convenient to confirm whether end cover is sealed to the position of entrance and exit, ensures that end cover is closely attached chamber and then carries out the negative pressure and electric core leakage detection, and further, the accuracy of detection result is improved.

[0034] Additional aspects and advantages of the present utility model will be given in part in the following description, and part will become obvious from the following description, or be understood by the practice of the present utility model. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0036] Figure 1 It is a structural schematic diagram of the battery leakproofness detection device of the embodiment of the utility model;

[0037] Figure 2 It is Figure 1 The structural schematic diagram of the sealed cabin shown;

[0038] Figure 3 It is Figure 1 The enlarged view shown at A.

[0039] Reference numerals: 100-sealed cabin, 110-entrance and exit, 120-chamber, 130-end cover, 140-negative pressure generating assembly, 150-battery fixture, 160-sliding slot, 170-roller, 180-rack, 190-sliding seat, 200-driving assembly, 210-infrared detection piece. DETAILED DESCRIPTION

[0040] The following will describe the embodiment of the utility model in detail, and the examples of the embodiment are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiment described below by referring to the drawings is exemplary, and is only used to explain the utility model, and cannot be understood as the limitation of the utility model.

[0041] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] A battery sealing performance testing device according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0045] This invention aims to provide an embodiment of a battery sealing test device.

[0046] Reference Figure 1 In this embodiment, a battery sealing test device mainly includes a sealing chamber 100, an end cap 130, a negative pressure generating component 140, and a sealing test unit.

[0047] Reference Figure 1 and Figure 2 For the sealed chamber 100, the sealed chamber 100 has a strip-shaped structure, and an inlet 110 is formed at the end of the sealed chamber 100. The inlet 110 accommodates the battery cell entering and exiting the chamber 120 of the sealed chamber 100. The strip-shaped structure extends along the length of the battery cell.

[0048] It is understandable that the end face of the sealed chamber 100 is the smallest face of the sealed chamber 100, and corresponds to the smallest face of the battery cell. The inlet and outlet 110 is formed at the end of the sealed chamber 100, which can reduce the area of ​​the inlet and outlet 110 of the chamber 120, which is beneficial to improving the sealing effect and thus improving the detection accuracy.

[0049] Reference Figure 1 and Figure 3 For end cap 130, end cap 130 is used to seal inlet 110, thereby enabling end cap 130 to seal chamber 120, so that a sealed environment is formed inside chamber 120.

[0050] In some specific embodiments, a cell fixture 150 is also included, which is used to transport the cell into the chamber 120, thereby facilitating the support of the cell and its transport in and out of the chamber 120.

[0051] Specifically, the battery cell fixture 150 can be equipped with positioning blocks for positioning the battery cells, thereby making the placement of the battery cells on the battery cell fixture 150 more accurate.

[0052] Furthermore, one end of the battery cell fixture 150 extends into the chamber 120, and the end cap 130 is disposed at the other end of the battery cell fixture 150. Thus, when the battery cell fixture 150 delivers the battery cell into the chamber 120, the battery cell fixture 150 can drive the end cap 130 to close and seal the inlet / outlet 110, thereby making it more convenient and faster for the end cap 130 to close and seal the inlet / outlet 110.

[0053] In some specific embodiments, a slide groove 160 extending along the length of the sealed chamber 100 is provided in the chamber 120. The battery cell fixture 150 slides in cooperation with the slide groove 160, thereby making the movement of the battery cell fixture 150 in the chamber 120 more stable and facilitating the delivery of the battery cell by the battery cell fixture 150.

[0054] Furthermore, the slide 160 extends to the inlet 110 of the chamber 120, thereby helping to ensure the limiting range of the slide 160 on the cell fixture 150.

[0055] In some specific embodiments, the bottom of the battery cell fixture 150 is provided with a roller 170, which is used to support the battery cell fixture 150 to roll in the chamber 120, thereby reducing the frictional resistance between the battery cell fixture 150 and the sealed chamber 100, making the movement of the battery cell fixture 150 in the chamber 120 smoother and less strenuous.

[0056] In some specific embodiments, a frame 180 is also included, one end of the cell fixture 150 extends into the chamber 120, and the other end of the cell fixture 150 is provided with a slide 190. The slide 190 is slidably disposed on the frame 180, thereby enabling the slide 190 to support the end located outside the chamber 120, thereby making the cell fixture 150 more stable.

[0057] Furthermore, a slide rail can be provided on the frame 180, and the slide block 190 can slide in cooperation with the slide rail, so that the slide rail can guide the movement of the slide block 190.

[0058] In some specific embodiments, a drive component 200 is also included, which is used to drive the cell fixture 150 into and out of the chamber 120, thereby eliminating the need for manual movement of the cell fixture 150 and improving the cell delivery efficiency of the cell fixture 150.

[0059] In some specific embodiments, multiple chambers 120 are provided, and multiple chambers 120 are arranged side by side.

[0060] This embodiment features multiple chambers 120 arranged side-by-side, enabling the testing of multiple battery cells at a time, thereby improving testing efficiency.

[0061] Furthermore, multiple sealed chambers 100 are provided, and each sealed chamber 100 has at least two side-by-side chambers 120.

[0062] Furthermore, multiple cell fixtures 150 are provided, and one drive assembly 200 can simultaneously drive multiple cell fixtures 150 into and out of the chamber 120.

[0063] In some specific embodiments, a chamber 120 is used to test a battery cell, the hermeticity testing unit is adapted to perform VOC detection, and the battery is a lithium battery.

[0064] It is understandable that VOC detection refers to the detection of volatile organic compounds, that is, the detection of leaking gases in the battery cell. Each chamber 120 corresponds to one battery cell. If leaking gas is detected, it is possible to accurately determine which chamber 120 has a leaking battery cell, quickly identify the leaking battery cell, and eliminate the need for further investigation of the leaking battery cell, which helps to improve efficiency.

[0065] In some specific embodiments, an infrared detector 210 is provided at one end of the sealed chamber 100 near the entrance / exit 110. The infrared detector 210 is used to detect the position of the end cap 130.

[0066] In this embodiment, an infrared detector 210 is provided at one end of the sealed chamber 100 near the inlet / outlet 110. The infrared detector 210 is used to detect the position of the end cap 130, thereby facilitating confirmation that the end cap 130 is properly sealed to the inlet / outlet 110. This ensures that the end cap 130 is tightly fitted to the sealed chamber 100 before performing negative pressure extraction and cell leakage detection, thereby improving the accuracy of the detection results.

[0067] The negative pressure generating component 140 is used to draw negative pressure into the chamber 120, thereby facilitating the removal of gas from the chamber 120 and creating a negative pressure environment required for cell leakage detection within the chamber 120.

[0068] Specifically, the negative pressure generating component 140 is arranged at the end of the sealed chamber 100 away from the inlet / outlet 110, thereby preventing the negative pressure generating component 140 from interfering with the electric cell entering and exiting the chamber 120 from the inlet / outlet 110.

[0069] The sealing detection unit detects the gas composition inside the chamber 120 to check the battery's sealing performance. This allows for quick and accurate determination of whether there is gas leakage from the battery cells inside the chamber 120, thereby improving the accuracy of the detection.

[0070] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0072] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0073] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0074] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0075] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A battery tightness detection device characterized by comprising: include: The sealed chamber (100) has a strip-shaped structure and an inlet (110) is formed at the end. The inlet (110) accommodates the battery cell entering and exiting the chamber (120) of the sealed chamber (100). The strip-shaped structure extends along the length of the battery cell. End cap (130) for sealing the inlet / outlet (110). A negative pressure generating component (140) is used to draw negative pressure into the chamber (120); The sealing test unit detects the battery sealing performance by detecting the gas composition inside the chamber (120).

2. The battery tightness detection device according to claim 1, wherein It also includes a cell fixture (150) for delivering the cell into the chamber (120).

3. The battery tightness detection device according to claim 2, wherein One end of the battery cell fixture (150) extends into the chamber (120), and the end cap (130) is disposed at the other end of the battery cell fixture (150).

4. The battery tightness detection device according to claim 2, wherein The chamber (120) is provided with a slide groove (160) extending along the length of the sealed chamber (100), and the battery cell fixture (150) slides in cooperation with the slide groove (160).

5. The battery tightness detection device according to claim 2, wherein The bottom of the battery cell fixture (150) is provided with a roller (170), which is used to support the battery cell fixture (150) to roll within the chamber (120).

6. The battery tightness detection device according to claim 2, wherein It also includes a frame (180), one end of the battery cell fixture (150) extends into the chamber (120), and the other end of the battery cell fixture (150) is provided with a slide (190), which is slidably disposed on the frame (180).

7. The battery tightness detection device according to claim 2, wherein It also includes a drive assembly (200) for driving the cell fixture (150) in and out of the chamber (120).

8. The battery tightness detection device according to claim 1, wherein Multiple chambers (120) are provided, and the multiple chambers (120) are arranged side by side.

9. The battery tightness detection device according to claim 1 or 8, wherein One of the chambers (120) is used to test a battery cell, the hermeticity testing unit is adapted to perform VOC testing, and the battery is a lithium battery.

10. The battery tightness detection device according to claim 1, wherein An infrared detector (210) is provided at one end of the sealed chamber (100) near the entrance (110), and the infrared detector (210) is used to detect the position of the end cap (130).

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