CN218212670U - Battery formation exhaust monitoring device and battery formation equipment - Google Patents

Abstract

The application discloses exhaust monitoring devices and battery formation equipment are formed to battery formation belongs to battery detection technology field. The utility model provides a battery formation exhaust monitoring devices includes: the storage device is provided with a storage cavity, the storage cavity is provided with an air outlet and is used for being communicated with an accommodating cavity where electrolyte in the battery is positioned, the storage cavity can store liquid, and the storage cavity is constructed in a way that gas in the battery can enter the liquid in the battery and is exhausted from the air outlet; the image acquisition device is positioned on one side of the storage device and is used for acquiring the image of the electrolyte in the storage cavity; the controller is in communication connection with the image acquisition device; and the display terminal is in communication connection with the controller. This application is monitored the storage chamber through image acquisition device, judges whether there is gaseous emission in the storage chamber in real time to confirm the emission time through the controller, more intelligent becomes the in-process exhaust gas's of in-process monitoring to the battery, uses manpower sparingly and time.

Description

Battery formation exhaust monitoring device and battery formation equipment

Technical Field

The utility model relates to a battery detection technology field, concretely relates to battery formation exhaust monitoring devices and battery formation equipment.

Background

The formation of the battery is a process of performing charge and discharge cycles on the battery for the first time after the battery is manufactured, in order to activate active materials in the battery and generate an SEI film at an anode, and gases are generated in the formation process, wherein the generated gases affect the charge and discharge reactions of the battery and the quality of the SEI film, and the quality of the SEI film directly affects the cycle life, the self-discharge performance and the like of the battery. The gas production time of different battery materials in the formation process is different, the gas production time needs to be monitored, and the performance of the lithium battery is evaluated according to the gas production rate and the gas production time. At present, the gas production time in the battery formation process is manually monitored, so that the problems of time and labor waste exist.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the application provides a battery becomes exhaust monitoring devices and battery becomes equipment, becomes the gaseous automatic monitoring that exhaust monitoring devices produced to electrolyte through the battery, can avoid the problem that artifical monitoring is wasted time and energy.

In a first aspect, the present application provides a battery formation exhaust monitoring device comprising:

the storage device is provided with a storage cavity, the storage cavity is provided with an air outlet and an air inlet and is used for being communicated with a containing cavity where electrolyte in the battery is located, the storage cavity is used for storing liquid, and the storage cavity is constructed in a way that gas in the battery can enter the liquid through the air inlet and is discharged from the air outlet;

the image acquisition device is positioned on one side of the storage device and is used for acquiring images of the liquid in the storage cavity;

the controller is in communication connection with the image acquisition device and is used for acquiring image information shot by the image acquisition device and determining the time for completely releasing the electrolyte gas during formation of the battery according to the change information of the image;

and the display terminal is in communication connection with the controller, and the controller controls the display terminal to display time.

In the technical scheme of this application embodiment, the electrolyte temporary storage of battery formation in-process is to the storage intracavity, gaseous in the electrolyte is in the release of storage intracavity, gaseous in the in-process of release can produce the bubble in electrolyte, shoot electrolyte through image acquisition device, because electrolyte is different at initial release gas with the image change when the release gas finishes, the controller judges the completion time of confirming the complete release of electrolyte according to the image change process of electrolyte, and show through display terminal, so that judge the performance of battery. Compared with a manual measurement mode, the method is more intelligent and automatic, and labor is saved.

In some embodiments, the battery formation exhaust monitoring device further comprises a light source for supplementing light for the image acquisition device.

Through the setting of light source, can provide auxiliary lighting for image acquisition device and storage device to the not enough of supplementary light, and then make image acquisition device can acquire more clear image, change around with can accurate discernment electrolyte release gas.

In some embodiments, the image capture device is any one of a camera, a vision sensor, or a video camera.

An image of the electrolyte may be acquired by a camera, a visual sensor, or a video camera, and the time at which the electrolyte releases gas is determined based on the image.

In some embodiments, the storage device comprises:

transparent container, the cavity in the transparent container is equipped with the air inlet as the storage chamber, and the air inlet is used for holding the chamber intercommunication with the electrolyte place of battery.

Therefore, the image acquisition device can more clearly acquire the image of the liquid in the storage cavity so as to ensure the identification effect.

In some embodiments, the storage device further comprises:

a pumping assembly in communication with the gas vent for pumping gas formed within the battery out of the gas vent of the storage chamber through a gas inlet.

The suction assembly can pump gas in the battery to the storage cavity, and pump gas generated by liquid in the storage cavity out in real time, so that the image acquisition device can dynamically monitor electrolyte in the storage cavity.

In some embodiments, the suction assembly comprises:

a first pipeline communicated with the exhaust port;

and the vacuum pump is arranged on the first pipeline and used for pumping gas out of the exhaust port.

The battery and the gas in the storage cavity are pumped out through the vacuum pump, so that the gas generated in the battery passes through the electrolyte in the storage cavity, the image acquisition device can conveniently acquire the gas and then compare the gas with the electrolyte, and the formation time is judged.

In some embodiments, the pumping assembly further comprises a valve disposed on the first conduit.

The opening and closing of the exhaust port can be controlled conveniently.

In some embodiments, the valve is an electrically operated valve, and the controller is further configured to control the opening and closing of the electrically operated valve and the vacuum pump.

After the controller judges that the gas is released in the formation, the vacuum pump can be controlled to stop working, and the electric valve is switched to be communicated with the external air so as to meet the requirements of the monitoring device in different states before and after the cell formation.

In some embodiments, the battery formation exhaust gas monitoring device further comprises a second pipeline, and the gas inlet is used for being communicated with the accommodating cavity for accommodating the electrolyte of the battery through the second pipeline.

The setting of second pipeline is convenient for become gaseous leading-in to the liquid of storage intracavity of in-process with the battery to image acquisition device shoots.

In some embodiments, the air inlet is located at the bottom of the transparent container for pumping a portion of the electrolyte within the cell through the pumping assembly into the storage chamber, the electrolyte within the storage chamber being a liquid.

When the gas in the electrolyte in the battery is completely released, the valve is opened, the vacuum pump stops working, and the electrolyte can flow back to the battery under the action of the self gravity.

In a second aspect, the present application provides a battery formation apparatus comprising the battery formation exhaust gas monitoring device of the first aspect.

In the technical solution of the embodiment of the present application, the technical features of the device for monitoring exhaust gas generated by battery formation in the first aspect are included, and the effects are the same as those described above, and are not described herein again.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

FIG. 1 schematically illustrates a schematic view of a battery formation exhaust monitoring device according to some embodiments of the present application;

fig. 2 schematically illustrates a schematic view of a transparent container of some embodiments of the present application.

The reference numbers are as follows:

a storage device 10, a transparent container 11, an air inlet 111, an air outlet 112, a suction assembly 12, a first pipeline 121, a vacuum pump 122 and a valve 123;

an image acquisition device 20;

a light source 30;

a second conduit 40;

a battery 50.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present application more clearly, and therefore are only used as examples, and the protection scope of the present application is not limited thereby.

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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

During the charging and discharging process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs are connected with the electrode terminals to form a current loop. An SEI film is formed on the surface of an anode after the first charge after the manufacture of a battery. For example, in the formation process of a lithium ion battery, a Solid Electrolyte Interphase (SEI) film is generated at an anode, which belongs to an irreversible reaction, and when the surface of the anode is completely covered by the SEI film, the irreversible reaction is stopped to form a stable SEI film, so that the charge and discharge processes can be performed repeatedly. In the formation process, hydrocarbon gas is generated, and generally occurs in the negative electrode to be formed. The quality of the SEI film can be judged according to the gas production time in the formation process, the SEI film is too thick in the gas production time process in the formation process, the battery has larger self resistance and less discharge in the use process due to the high SEI impedance, the gas production time is too short, the SEI film is too thin and does not completely cover the anode, the electrolyte is consumed by the battery in the use process to generate the SEI film, and the battery is likely to bulge along with the generation of gas, so that the performance of the battery is affected. Therefore, the gas production time in the formation process needs to be monitored to judge the quality of the battery SEI film.

The applicant notices that in the process of forming the battery, the generated gas is firstly introduced into a container filled with liquid, the container is connected with a pipe with scales, the gas is introduced into the container to increase the pressure in the container, the liquid is pressed into the pipe with scales, the discharge amount of the gas in the process of forming the battery can be determined by reading the degree of the liquid in the pipe, and the liquid level difference at each time point before and during the charging of the battery and the liquid level difference in the pipe with scales are also required to be recorded to calculate the discharge amount of the gas, so the whole process still needs human participation, and is time-consuming and labor-consuming.

The inventor finds that a small amount of electrolyte in the battery can be partially pumped out by using the storage device in the process of battery formation, the battery can continuously release gas into the storage cavity in the process of battery formation, images of the electrolyte in the storage cavity can be shot by the image acquisition device, the release time of the gas in the battery formation process can be judged by image comparison, and then the membrane of the battery anode is evaluated to judge whether the battery formation meets the process requirements.

Specifically, because the battery can produce some harmful gas at the formation in-process, consequently need carry out special treatment with harmful gas exhaust, carry out the exhaust in-process at gas, can set up storage device, storage device is equipped with the storage chamber, the storage chamber is equipped with the gas vent, can be equipped with liquid in the storage chamber, gas in the battery formation in-process lets in the liquid in the storage chamber, shoot the observation through image acquisition device to the liquid in the storage chamber, the change of bubble is different around the battery formation in-process liquid, the controller can gather the image calculation formation time that changes around gaseous through image acquisition device, and show through display terminal, whole process need not the people to detect the calculation and has realized the monitoring of battery formation process exhaust time promptly, can more use manpower sparingly and time.

The application provides a battery formation exhaust monitoring device, can use but not limit to the exhaust monitoring that lithium cellization becomes, can use the battery formation exhaust monitoring device that this application provided in the battery that needs to become, for example lithium cell.

It is understood that the battery in the present application may be a battery cell, a battery module, or a battery pack.

For convenience of description, the following embodiments will be described by taking a battery formation exhaust gas monitoring device according to an embodiment of the present application as an example.

Referring to fig. 1, fig. 1 is a schematic view of a device for monitoring battery formation exhaust according to some embodiments of the present disclosure. The utility model provides a battery ization becomes exhaust monitoring devices, includes storage device 10, image acquisition device 20, controller and display terminal. Wherein the storage device 10 has a storage chamber provided with an air outlet 112 and an air inlet 111, the storage chamber is used for communicating with a containing chamber in which the electrolyte in the battery 50 is contained, the storage chamber is used for storing liquid, and the storage chamber is configured to allow the gas in the battery 50 to enter the liquid through the air inlet 111 and to be discharged from the air outlet 112. An image acquisition device 20 is located on one side of the storage device 10 for acquiring images of the liquid within the storage chamber. The controller is in communication connection with the image acquisition device 20 and is used for acquiring image information shot by the image acquisition device 20 and determining the time for completely releasing the electrolyte gas when the battery 50 is formed according to the change information of the image. The display terminal is in communication connection with the controller, and the controller controls the display terminal to display time.

The outlet 112 of the holding chamber may be located at the top or side of the holding chamber, and the inlet of the holding chamber communicating with the holding chamber may be located at the top, side or bottom of the holding chamber.

The controller can be but is not limited to a PLC controller, a single chip microcomputer and the like.

The display terminal may be a display, an ipad, or other device capable of displaying text and images.

The shape of the storage chamber may be, but is not limited to, square, circular, etc., and is not particularly limited thereto.

The battery 50 may be a battery cell, a battery module, or a battery pack.

In the technical scheme of this application embodiment, battery 50 ization in-process electrolyte is temporarily stored to the storage intracavity, gaseous in the electrolyte is in the release of storage intracavity, gaseous in the in-process of release can produce the bubble in electrolyte, shoot electrolyte through image acquisition device 20, because electrolyte is different at initial release gas with the image change when the release gas finishes, the controller judges the completion time of confirming the complete release of electrolyte according to the image change process of electrolyte, and show through display terminal, so that judge battery 50's performance. Compared with a manual measurement mode, the method is more intelligent and automatic, and labor is saved.

In some embodiments, referring to fig. 1, the battery formation exhaust monitoring device further includes a light source 30, and the light source 30 is used for supplementing light to the image capturing device 20.

Through the arrangement of the light source 30, auxiliary lighting can be provided for the image acquisition device 20 and the storage device 10 to supplement the deficiency of light, so that the image acquisition device 20 can acquire clearer images, and the change before and after the electrolyte releases gas can be accurately identified. When the ambient light around image capture device 20 is sufficient, light source 30 may not work, and when the ambient light around image capture device 20 is insufficient, light source 30 supplements the illumination for image capture device 20 to guarantee that image capture device 20 can gather enough clear images, in order to ensure that the gas that can discharge at battery 50 formation in-process can be monitored, in order to confirm the emission time of formation in-process. It is specifically optional, the switching of controllable light source 30 of controller, be equipped with illumination sensor in the environment that image acquisition device 20 is located, illumination sensor and controller communication are connected, and the switching of controller according to the illumination intensity automatic control light source 30 that illumination sensor gathered to ensure that battery 50 changes into in-process image acquisition device 20 monitors the storage chamber in real time, guarantee monitoring time's accuracy.

In some embodiments, image capture device 20 is any one of a camera, a vision sensor, or a video camera.

An image of the electrolyte may be acquired by a camera, a visual sensor, or a video camera, and the time at which the electrolyte releases gas is determined based on the image. The camera may be, but is not limited to, a CCD camera. If a CCD camera with the resolution of 0.045mm/pixel is adopted, a camera capable of bearing the working temperature of more than 45 ℃ is selected, the CCD camera has the advantages of higher sensitivity and resolution and low external interference, and can obtain a clearer image under strong light or low light, so that the image for shooting the electrolyte is clearer.

In some embodiments, referring to fig. 1, the storage device 10 includes a transparent container 11. The cavity in the transparent container 11 serves as a storage chamber, the storage chamber is provided with an air inlet 111, and the air inlet 111 is used for communicating with the accommodating chamber where the electrolyte of the battery 50 is located.

The air inlet 111 may be located at the top, side or bottom of the storage chamber.

The transparent container 11 may be a transparent plastic container or a transparent glass container, and is not limited specifically herein, and the transparent container may enable the image acquisition device 20 to more clearly acquire an image of liquid in the storage cavity, and may monitor the exhaust time of the battery 50 during the formation process through the change of bubbles in the transparent container 11, so as to ensure the identification effect.

In some embodiments, referring to FIG. 1, the storage device 10 further includes a pumping assembly 12, the pumping assembly 12 being in communication with a gas outlet 112 for pumping the gases formed in the battery 50 out of the gas outlet 112 of the storage chamber through a gas inlet 111.

The suction assembly 12 is in communication with the exhaust port 112, so that gas generated by the battery 50 can be continuously and sequentially extracted from the air inlet 111, the liquid and the exhaust port 112, the image capturing device 20 monitors the liquid in the storage chamber,

the pumping assembly 12 can pump the gas in the battery 50 into the storage chamber and pump the gas passing through the liquid in the storage chamber in real time, and the change of the liquid before and during the formation process is different, and whether the formation is finished can be determined based on the change of the liquid (the amount or the existence of bubbles in the liquid).

In some embodiments, referring to fig. 1, the pumping assembly 12 includes a first pipeline 121 and a vacuum pump 122. Wherein the first pipe 121 is in communication with the exhaust port 112. A vacuum pump 122 is provided on the first conduit 121 for pumping gas out of the exhaust port 112.

The gas in the battery 50 and the storage cavity is pumped out through the vacuum pump 122, so that the gas generated in the battery 50 passes through the electrolyte in the storage cavity, comparison is performed after the collection of the image collection device 20 is facilitated, and the formation time is judged.

In some embodiments, referring to fig. 1, the pumping assembly 12 further includes a valve 123 disposed on the first pipeline 121.

The valve 123 may be a manual valve or an electric valve. When the formation process of the battery 50 is finished, the state of the electric valve is switched to communicate the exhaust port 112 of the storage chamber with the external environment, and the electric valve can also be opened and closed, for example, the valve 123 is closed before the formation, the valve 123 is opened during the formation, and after the formation is finished, the valve 123 can be switched to be communicated with the external environment. For example, the valve 123 may be a two-position three-way solenoid valve, or a manual three-way valve. The valve 123 facilitates control of the opening and closing of the vent 112 to meet different requirements of the battery 50 before, during, and after formation.

In some embodiments, valve 123 is an electrically operated valve, and the controller is also used to control the opening and closing of electrically operated valve and vacuum pump 122.

When the controller judges that the gas is released during formation, the vacuum pump 122 can be controlled to stop working, and the electric valve is switched to be communicated with the external air, so that the requirements of the monitoring device in different states before and after the formation of the battery 50 are met. Specifically, before formation, the electric valve may be in a closed state, and in the formation process, the electric valve is opened, the vacuum pump 122 is opened, and the gas in the battery 50 is sucked, and after formation, the electric valve may be kept in an opened state or switched to an external environment to communicate so as to relieve pressure in the storage chamber.

In some embodiments, referring to fig. 1, the device for monitoring exhaust gas generated by battery formation further includes a second pipeline 40, and the air inlet 111 is used for communicating with the accommodating cavity through the second pipeline 40.

Specifically, a liquid injection port is formed in the battery 50, the second pipeline 40 is connected to the liquid injection port, a part of the second pipeline 40 may extend into the electrolyte in the battery 50 from the liquid injection port, the second pipeline 40 may not extend into the electrolyte, and the end of the second pipeline 40 on the side of the air inlet 111 is located at the bottom of the storage chamber.

The second pipeline 40 is arranged to facilitate the introduction of the gas generated during the formation of the battery 50 into the liquid in the storage chamber, so as to facilitate the shooting by the image capturing device 20.

In some embodiments, referring to fig. 1, the air inlet 111 is located at the bottom of the transparent container 11 for pumping a part of the electrolyte in the battery 50 into the storage cavity through the pumping assembly 12, and the electrolyte in the storage cavity is used as a liquid.

Specifically, the bottom of the transparent container 11 is communicated with the accommodating cavity of the battery 50, and in the formation process of the battery 50, the suction assembly 12 works to generate negative pressure in the storage cavity, so that a part of electrolyte in the battery 50 is sucked into the storage cavity, the liquid level of the electrolyte in the battery 50 is lowered by a certain height, and at the moment, the formed gas enters the storage cavity, and the formed gas emerges from the electrolyte in the storage cavity and is sucked out through the exhaust port 112. When the formation is finished, the suction assembly 12 stops working, the valve 123 is in an open state, the vacuum pump 122 stops working, the storage cavity is in a normal pressure state, and the electrolyte in the storage cavity flows back into the battery 50 under the action of self weight.

The present application may not be limited to the structure in which the air inlet 111 is located at the bottom of the transparent container 11, but may be provided at the side or the top of the transparent container 11.

For example, referring to fig. 1, the gas inlet 111 is located at the top of the transparent container 11, the gas inlet 111 is communicated with the accommodating cavity of the electrolyte in the battery 50 through the second pipeline 40, and the second pipeline 40 may extend into the electrolyte in the battery 50 to suck a part of the electrolyte into the storage cavity, or may not extend into the electrolyte in the battery 50 but only extend into the accommodating cavity, at this time, the second pipeline 40 only plays a role of introducing gas. In order to facilitate the image acquisition device 20 to shoot the gas in the storage cavity for comparison, the storage cavity can be filled with liquid, which is transparent and better, and can not be limited to water, alcohol liquid and the like, when the liquid is water-containing liquid, a dehumidifying device can be arranged on the pipeline for drying to prevent water vapor from entering the battery 50. In the storage cavity, second pipeline 40 can stretch into the bottom of storage cavity, and under the suction of suction assembly 12, after some electrolyte in battery 50 was pumped into the storage cavity, battery 50's gas discharged from the gas vent 112 at the top of storage cavity behind second pipeline 40, the electrolyte, after the formation was finished, can let in the positive pressure gas with the electrolysis hydraulic pressure back to in battery 50 to the storage cavity. The gas vent sets up the top at transparent container 11, pack into liquid (can be electrolyte, liquid can not be electrolyte) in transparent container, can be more convenient to the image before the formation, the image of formation in-process and the image after the formation are compared, before the battery formation with after the formation, do not produce gas in the battery, the image of the interior liquid of storage chamber that image acquisition device gathered can not have the bubble, gas that the formation in-process produced can be discharged in the liquid of storage chamber, make liquid produce the bubble, therefore the image that image acquisition device gathered has the bubble.

Optionally, the controller may control the image acquisition device 20 to acquire the image of the storage cavity in real time, or may acquire the image once every fixed time interval, where the time interval may be acquired in seconds or minutes, and may be specifically determined according to actual process parameters. The controller takes an initial picture of bubbles generated in the liquid shot by the image acquisition device 20 or an initial picture with increased bubble generation amount as an initial time of forming the gas discharge, takes an initial picture without bubbles generated in the liquid shot by the image acquisition device 20 or an initial picture with decreased bubble generation amount as a time of forming the gas discharge after the initial time, and calculates a difference value between the end time and the initial time to obtain a forming process gas discharge time.

For convenience of description, the following embodiments will be described by taking a battery formation exhaust gas monitoring device according to an embodiment of the present application as an example.

The application provides a battery formation equipment, includes above-mentioned battery formation exhaust monitoring devices.

The battery formation equipment comprises the technical characteristics of the battery formation exhaust monitoring device, the effect is the same as that of the battery formation exhaust monitoring device, and the details are not repeated.

For convenience of description, the following embodiments will be described by taking a battery formation exhaust gas monitoring device according to an embodiment of the present application as an example.

Referring to fig. 1, fig. 1 is a schematic view of a device for monitoring battery formation exhaust according to some embodiments of the present disclosure. The utility model provides a battery ization becomes exhaust monitoring devices, includes storage device 10, image acquisition device 20, controller and display terminal. Wherein the storage device 10 has a storage chamber provided with an air outlet 112 and an air inlet 111, the storage chamber is used for communicating with a containing chamber in which the electrolyte in the battery 50 is contained, the storage chamber is used for storing liquid, and the storage chamber is configured to allow the gas in the battery 50 to enter the liquid through the air inlet 111 and to be discharged from the air outlet 112. An image acquisition device 20 is located on one side of the storage device 10 for acquiring images of the liquid within the storage chamber. The controller is in communication connection with the image acquisition device 20 and is used for acquiring image information shot by the image acquisition device 20 and determining the time for completely releasing the electrolyte gas when the battery 50 is formed according to the image information. The display terminal is in communication connection with the controller, and the controller controls the display terminal to display time.

The battery formation exhaust monitoring device further comprises a light source 30, and the light source 30 is used for supplementing light for the image acquisition device 20.

The image capturing device 20 is any one of a camera, a vision sensor, or a video camera.

The storage device 10 comprises a transparent container 11. The cavity in the transparent container 11 serves as a storage cavity, the storage cavity is provided with an air inlet 111, and the air inlet 111 is used for communicating with the accommodating cavity where the electrolyte of the battery 50 is located.

The storage device 10 further includes a suction assembly 12, the suction assembly 12 being in communication with a vent 112 for drawing a gas inlet 111 formed in the battery 50 out of the vent 112 of the storage chamber.

The pumping assembly 12 comprises a first conduit 121 and a vacuum pump 122. Wherein the first pipe 121 is in communication with the exhaust port 112. A vacuum pump 122 is provided on the first conduit 121 for pumping gas out of the exhaust port 112.

The pumping assembly 12 further comprises a valve 123 disposed on the first conduit 121.

The valve 123 is an electric valve, and the controller is also used for controlling the opening and closing of the electric valve and the vacuum pump 122.

The battery formation exhaust gas monitoring device further includes a second pipe 40, and the gas inlet 111 is used for communicating with the accommodating chamber through the second pipe 40.

An air inlet 111 is located at the bottom of the transparent container 11 for sucking part of the electrolyte in the cell 50 through the suction assembly 12 into the storage chamber, which serves as a liquid.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (11)

1. A battery formation exhaust monitoring device, comprising:

the storage device is provided with a storage cavity, the storage cavity is provided with an air outlet and an air inlet and is used for being communicated with a containing cavity in which electrolyte in the battery is contained, the storage cavity is used for storing liquid, and the storage cavity is constructed in a manner that gas in the battery enters the liquid through the air inlet and is discharged from the air outlet;

the image acquisition device is positioned on one side of the storage device and is used for acquiring the image of the liquid in the storage cavity;

the controller is in communication connection with the image acquisition device and is used for acquiring image information shot by the image acquisition device and determining the time for completely releasing the electrolyte gas during formation of the battery according to the bubble change information of the image;

and the display terminal is in communication connection with the controller, and the controller controls the display terminal to display the time.

2. The device of claim 1, further comprising a light source for supplementing light to the image capture device.

3. The device of claim 1, wherein the image capture device is any one of a camera, a visual sensor, or a video camera.

4. The battery formation exhaust gas monitoring device according to claim 1, wherein the storage device comprises:

a transparent container, a cavity in the transparent container being the storage chamber.

5. The battery formation exhaust gas monitoring device according to claim 4, wherein the storage device further comprises:

a suction assembly in communication with the gas vent for drawing gases formed within the battery out of the gas vent of the storage chamber through the gas inlet.

6. The battery formation exhaust monitoring device of claim 5, wherein the suction assembly comprises:

a first pipeline communicated with the exhaust port;

and the vacuum pump is arranged on the first pipeline and used for pumping the gas out of the exhaust port.

7. The device of claim 6, wherein the suction assembly further comprises a valve disposed on the first conduit.

8. The device as claimed in claim 7, wherein the valve is an electric valve, and the controller is further configured to control the opening and closing of the electric valve and the vacuum pump.

9. The battery formation exhaust gas monitoring device according to any one of claims 5 to 8, further comprising a second conduit through which the gas inlet is adapted to communicate with the receiving cavity.

10. The device according to claim 9, wherein the air inlet is located at a bottom of the transparent container for drawing a portion of the electrolyte within the battery through the suction assembly into the storage chamber, the electrolyte within the storage chamber being the liquid.

11. A battery formation apparatus comprising a battery formation exhaust gas monitoring device according to any one of claims 1 to 10.

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