Battery air tightness detection device

Abstract

The present invention discloses a battery airtightness detection device, comprising a base frame, a fixing mechanism, an airtightness detection module and a displacement mechanism. The base frame is provided with a test station capable of placing a battery. The fixing mechanism is arranged on the base frame for fixing the battery at the test station. The airtightness detection module is connected with an air nozzle via an air pipe. The airtightness detection module is used to detect the airtightness performance of the battery. The displacement mechanism is arranged on the base frame. The air nozzle is arranged on the displacement mechanism. The displacement mechanism can drive the air nozzle to approach or move away from the battery. The battery is fixed by the fixing mechanism. The battery and the air nozzle are not easily offset. The airtightness detection module can detect the airtightness of the battery more accurately. The design saves manpower and improves detection efficiency and detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of battery airtightness quality inspection, and in particular to a battery airtightness inspection device. Background Art

[0002] Traditionally, the air-tightness test on the battery requires manual fixation of the battery, and then the air nozzle connected to the air-tightness test module is connected to the test air hole on the battery. However, during the test, the battery and the air nozzle are easily offset, and manual force is required to fix them. In the long run, this consumes a lot of workers' physical strength. At the same time, the offset between the battery and the air nozzle will lead to inaccurate detection. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a battery air tightness detection device, which saves manpower and improves detection efficiency and detection accuracy.

[0004] A battery airtightness detection device according to an embodiment of the first aspect of the present invention includes: a base frame provided with a test station capable of placing a battery; a fixing mechanism arranged on the base frame for fixing the battery to the test station; an airtightness detection module connected to an air nozzle via an air pipe, the airtightness detection module being used to detect the airtightness performance of the battery; a displacement mechanism arranged on the base frame, the air nozzle being arranged on the displacement mechanism, and the displacement mechanism being capable of driving the air nozzle close to or away from the battery.

[0005] A battery air tightness detection device according to an embodiment of the present invention has at least the following beneficial effects:

[0006] The battery air tightness detection device of the present invention places the battery to be tested on the test station, fixes the battery by using a fixing mechanism, and then drives the air nozzle to accurately connect with the test air hole on the battery through the displacement mechanism. Since the battery is fixed by the fixing mechanism, the battery and the air nozzle are not easy to be offset, and the air tightness detection module can detect the battery air tightness more accurately. This design saves manpower and improves detection efficiency and detection accuracy.

[0007] According to some embodiments of the present invention, the airtight detection module includes an air pump, and the air pump is connected to the air nozzle through a first air pipe segment.

[0008] According to some embodiments of the present invention, the airtight detection module also includes a liquid storage container, which is provided with a cavity for accommodating liquid and an air inlet connected to the cavity, and the air pump is connected to the air inlet through a second air pipe segment.

[0009] According to some embodiments of the present invention, the liquid storage container is provided with a light-transmitting observation portion corresponding to the cavity.

[0010] According to some embodiments of the present invention, the fixing mechanism includes a driving component and a pressing plate, the driving component is disposed on the base frame, and the driving component is connected to the pressing plate to drive the pressing plate to approach or move away from the testing station.

[0011] According to some embodiments of the present invention, a control module and a manipulation button are further included, and the control module is electrically connected to the manipulation button and the driving component respectively.

[0012] According to some embodiments of the present invention, it also includes an in-place detection component and a current detection unit, the driving component is a motor, the in-place detection component is arranged on the base frame to detect the position of the pressure plate, the current detection unit is electrically connected to the motor to detect the working current of the motor, and the control module is electrically connected to the current detection unit.

[0013] According to some embodiments of the present invention, the displacement mechanism includes a fixed frame, a guide structure and a handle, the air nozzle is arranged on the fixed frame, the guide structure is arranged on the base frame, the fixed frame is movably arranged on the guide structure, the handle is connected to the fixed frame, and the handle can be subjected to force to drive the fixed frame to move along the guide structure to approach or move away from the battery.

[0014] According to some embodiments of the present invention, the testing station is a limiting groove arranged on the base frame.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A three-dimensional schematic diagram of one embodiment of a battery air tightness detection device of the present invention;

[0018] Figure 2 A side view of one embodiment of a battery air tightness detection device of the present invention;

[0019] Figure 3 This is a principle structural block diagram of one embodiment of the battery air tightness detection device of the present invention.

[0020] Reference numerals:

[0021] Base frame 100, base 110, stand 120, test station 200, fixing mechanism 300, driving component 310, pressure plate 320, air nozzle 400, airtight detection module 500, vacuum pump 510, liquid storage container 520, light-transmitting observation part 530, cavity 540, air inlet 550, first air pipe section 610, second air pipe section 620, displacement mechanism 700, fixing frame 710, guide structure 720, guide rod 721, guide hole 722, handle 730, control module 810, control button 820, in-position detection component 830, current detection unit 840. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1-3, a battery airtightness detection device according to an embodiment of the first aspect of the present invention includes a base frame 100, a fixing mechanism 300, an airtightness detection module 500 and a displacement mechanism 700. The base frame 100 is provided with a test station 200 capable of placing a battery. The fixing mechanism 300 is arranged on the base frame 100 for fixing the battery on the test station 200. The airtightness detection module 500 is connected to an air nozzle 400 via an air pipe. The airtightness detection module 500 is used to detect the airtightness performance of the battery. The displacement mechanism 700 is arranged on the base frame 100. The air nozzle 400 is arranged on the displacement mechanism 700. The displacement mechanism 700 can drive the air nozzle 400 to move closer to or away from the battery.

[0027] Among them, the base frame 100 can be in various shapes. For example, the base frame 100 includes a base 110 and a stand 120. The stand 120 is set on the base 110. The test station 200 is opened on the base 110, and the air nozzle 400 can be selected according to the battery model so that it can be adapted and connected with the test air hole on the battery.

[0028] The battery air tightness detection device of the present invention places the battery to be tested on the test station 200, fixes the battery with the fixing mechanism 300, and then drives the air nozzle 400 to accurately connect with the test air hole on the battery through the displacement mechanism 700. Since the battery is fixed by the fixing mechanism 300, the battery and the air nozzle 400 are not easy to be offset, and the air tightness detection module 500 can detect the air tightness of the battery more accurately. This design saves manpower and improves detection efficiency and detection accuracy.

[0029] In some embodiments of the present invention, the airtight detection module 500 may include an air pump 510, which is connected to the air nozzle 400 through the first air pipe section 610. The air pump 510 is used to evacuate air from the battery. If the battery has good airtightness, the air pump 510 will not extract gas. If the battery has poor airtightness, the air pump 510 will discharge gas.

[0030] In some embodiments of the present invention, Figure 1 As shown, the airtight detection module 500 also includes a liquid storage container 520, which is provided with a cavity 540 for accommodating liquid and an air inlet 550 connected to the cavity 540. The vacuum pump 510 is connected to the air inlet 550 through the second air pipe section 620. Specifically, the vacuum pump 510 extracts air from the battery through the air nozzle 400 and the first air pipe section 610, and the extracted gas is discharged to the cavity 540 of the liquid storage container 520 through the second air pipe section 620. Liquids such as water can be placed in the cavity 540. When gas is extracted, there are bubbles in the liquid in the cavity 540, which proves that the battery has poor air tightness.

[0031] In some embodiments of the present invention, a light-transmitting observation portion 530 corresponding to the holding cavity 540 is provided on the liquid storage container 520, so as to facilitate workers to observe whether there are bubbles in the liquid. Specifically, the holding cavity 540 can be enclosed by glass or acrylic plates to form a light-transmitting observation portion 530.

[0032] In some embodiments of the present invention, Figure 1 , 2 As shown, the fixing mechanism 300 includes a driving component 310 and a pressing plate 320 . The driving component 310 is disposed on the base frame 100 . The driving component 310 is connected to the pressing plate 320 to drive the pressing plate 320 to approach or move away from the testing station 200 .

[0033] Specifically, the driving component 310 can be a linear motor or a cylinder. The driving component 310 can be set on the stand 120. The pressing plate 320 is located above the test station 200. The driving component 310 drives the pressing plate 320 to move up and down, so as to approach or move away from the test station 200. The surface of the pressing plate 320 is relatively flat and can be pressed against the surface of the battery.

[0034] In some embodiments of the present invention, Figure 1 , 3 As shown, it also includes a control module 810 and a control button 820. The control module 810 is electrically connected to the control button 820 and the driving component 310 respectively. The control module 810 can be composed of a CPU or an MCU and peripheral circuits. The worker places the battery on the test station 200 and presses the control button 820. The control module 810 can control the driving component 310 to operate, so that the pressure plate 320 is pressed down onto the battery to fix the battery.

[0035] In some embodiments of the present invention, Figure 1 As shown, the test station 200 is a limiting groove set on the base frame 100. The battery is placed in the limiting groove to prevent the battery from horizontal movement or swinging, so that the air nozzle 400 can better dock with the test air hole.

[0036] In some embodiments of the present invention, an in-place detection component 830 and a current detection unit 840 are also included. The driving component 310 is a motor. The in-place detection component 830 is arranged on the base frame 100 to detect the position of the pressure plate 320. The current detection unit 840 is electrically connected to the motor to detect the working current of the motor. The control module 810 is electrically connected to the current detection unit 840.

[0037] The in-place detection component 830 can be a touch switch or a photoelectric sensor arranged on the base 110. When the pressure plate 320 moves down to press against the battery, it can touch the touch switch or reach the detection range set by the photoelectric sensor. If the worker makes an operating error and places his hand or other objects on top of the battery and is clamped by the pressure plate 320, the pressure plate 320 is not detected by the in-place detection component 830 at this time, and the force on the pressure plate 320 will cause the electrode to be blocked, resulting in an increase in the working current. The current detection unit 840 collects the signal of the increase in the working current of the motor and feeds it back to the control module 810. The control module 810 promptly controls the motor to stop or flip to prevent accidents. Specifically, the current detection unit 840 can be a voltage-dividing sampling circuit composed of multiple resistors, which is connected to the motor winding to detect the working current.

[0038] In some embodiments of the present invention, Figure 1 , 2 As shown, the displacement mechanism 700 includes a fixed frame 710, a guide structure 720 and a handle 730. The air nozzle 400 is arranged on the fixed frame 710, the guide structure 720 is arranged on the base frame 100, the fixed frame 710 is movably arranged on the guide structure 720, and the handle 730 is connected to the fixed frame 710. The handle 730 is subjected to force to drive the fixed frame 710 to move along the guide structure 720 to get closer to or away from the battery. After the battery is installed, the worker can push the fixed frame 710 to move along the guide structure 720 through the handle 730, so that the air nozzle 400 is accurately docked with the test air hole.

[0039] Specifically, the guide structure 720 may include a guide rod 721 disposed on the base frame 100 and a guide hole 722 disposed on the fixing frame 710 , and the guide rod 721 passes through the guide hole 722 .

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery air tightness detection device, characterized in that: include: A base frame, provided with a test station capable of placing batteries; A fixing mechanism, disposed on the base frame and used for fixing the battery to the test station; An airtightness detection module, connected to an air nozzle via an air pipe, and the airtightness detection module is used to detect the airtightness performance of the battery; A displacement mechanism is arranged on the base frame, and the air nozzle is arranged on the displacement mechanism; The test station is a limit groove arranged on the base frame; The fixing mechanism includes a driving component and a pressing plate, wherein the driving component is arranged on the base frame, and the driving component is connected to the pressing plate to drive the pressing plate to approach or move away from the testing station, wherein the surface of the pressing plate is relatively flat to press against the upper surface of the battery, and the displacement mechanism can drive the air nozzle to approach or move away from the battery from the notch at one end of the limiting groove; It also includes a control module and a control button, wherein the control module is electrically connected to the control button and the driving component respectively; It also includes an in-place detection component and a current detection unit. The driving component is a motor. The in-place detection component is arranged on the base frame to detect the position of the pressing plate. The current detection unit is electrically connected to the motor to detect the working current of the motor. The control module is electrically connected to the current detection unit. If a hand or other object is placed on the battery and clamped by the pressing plate, the pressing plate is not detected by the in-place detection component, and the pressing plate is subjected to force to cause the electrode to stall. The current detection unit collects a signal of an increase in the working current of the motor and feeds it back to the control module. The control module promptly controls the motor to flip.

2. A battery air tightness detection device according to claim 1, characterized in that: The airtight detection module includes an air pump, and the air pump is connected to the air nozzle through a first air pipe section.

3. A battery air tightness detection device according to claim 2, characterized in that: The airtight detection module also includes a liquid storage container, which is provided with a cavity for accommodating liquid and an air inlet connected to the cavity, and the air pump is connected to the air inlet through a second air pipe section.

4. A battery air tightness detection device according to claim 3, characterized in that: The liquid storage container is provided with a light-transmitting observation portion corresponding to the cavity.

5. A battery air tightness detection device according to claim 1, characterized in that: The displacement mechanism includes a fixed frame, a guide structure and a handle, the air nozzle is arranged on the fixed frame, the guide structure is arranged on the base frame, the fixed frame is movably arranged on the guide structure, the handle is connected to the fixed frame, and the handle can be subjected to force to drive the fixed frame to move along the guide structure to approach or move away from the battery.

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