CN215178000U - Battery gassing volume detection device - Google Patents

Abstract

The utility model discloses a battery gassing volume detection device. The battery gassing amount detection device comprises an air nozzle, a one-way valve and an injector which are sequentially connected from bottom to top; the inlet end of the air tap is connected with the air outlet of the battery to be tested for gassing amount, the outlet end of the air tap is connected with the inlet end of the one-way valve, and the outlet end of the one-way valve is connected with the inlet end of the injector. The battery gassing amount detection device has the advantages of simple structure, low cost, strong reliability and operability, high accuracy, high detection efficiency and the like.

Description

Battery gassing volume detection device

Technical Field

The utility model relates to a battery test technical field, particularly, the utility model relates to a battery gassing volume detection device.

Background

The generation of gas in the formation stage and the occurrence of gas swelling in the storage stage and the cycle of the nonaqueous battery are complicated problems. The formation process is the first charging behavior of the battery, has very important influence on the electrochemical performance of the whole battery, the electrochemical reactions generated in the formation process are very complex, and it is difficult to distinguish which reactions correspond to which phases at present, but the unified external expression of the reactions is that certain gas is inevitably generated, and the internal pressure of the battery changes; the battery inevitably generates gas in the long-term circulation process, so that the internal pressure of the battery is increased, and the battery is abnormally swelled and even exploded. The research on the gas generation of the battery is one of important indexes for the research on the safety and the failure of the battery. In order to reduce the gas generation of the battery in the formation process, the circulation process and the storage process, the gas generation mechanism of the battery needs to be deeply researched, and a targeted solution is sought to reduce the gas generation of the battery by researching the gas generation conditions of the battery at different stages, so that the high-efficiency and safe battery is prepared.

On the other hand, in the case of an aqueous battery, since water is used as an electrolyte solvent, partial water decomposition and generation of hydrogen and oxygen are inevitably caused during charging and discharging of the battery due to the positive electrode oxygen evolution potential, the negative electrode hydrogen evolution potential, and the catalytic performance of the positive and negative electrode active materials.

The existing method for detecting the gas evolution quantity of the battery mainly comprises a drainage method and an air bag collection method. The drainage method is characterized in that an air duct is led out from the interior of the battery shell, and the opening of the air duct is arranged at the bottom of a measuring cylinder which is filled with water and is arranged in the water in an inverted mode. After the battery generates gas, the gas is gathered at the bottom of the measuring cylinder and certain water is discharged from the measuring cylinder. The air bag collecting method is characterized in that the air bag is connected with the interior of the battery in a certain mode, so that the battery generates gas and gathers the gas into the air bag. However, the existing method still has the problems of inaccurate gas evolution test, large error, complex test device, high cost, complex test method, large operation difficulty, narrow application range of the test method and the device and the like.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a battery gassing volume detection device. The battery gassing amount detection device has the advantages of simple structure, low cost, strong reliability and operability, high accuracy, high detection efficiency and the like.

In one aspect of the present invention, the utility model provides a battery gassing volume detection device. According to the embodiment of the utility model, the battery gassing volume detection device comprises an air nozzle, a one-way valve and an injector which are connected in sequence from bottom to top; the inlet end of the air tap is connected with the air outlet of the battery to be tested for gassing amount, the outlet end of the air tap is connected with the inlet end of the one-way valve, and the outlet end of the one-way valve is connected with the inlet end of the injector.

Adopt according to the utility model discloses above-mentioned embodiment's device detects battery gassing volume, and the entry end of air cock links to each other with the gas outlet of waiting to detect gassing volume battery, with battery gassing volume detection device and battery evacuation before the battery operation. And subsequently, gas is generated along with the operation of the battery, the gas generated is pumped out of the battery into the syringe pipe through the one-way valve by using the syringe piston, and the gas generation rate of the battery can be read according to the scales of the syringe. Therefore, the battery gassing amount detection device is simple in structure, low in cost, high in reliability and operability, capable of accurately and efficiently detecting the battery gassing amount, free of limitation on the specific type of the battery to be detected, suitable for detecting the gassing amount of a water-based or non-water-based battery, and capable of widening the types of the battery to be detected.

Optionally, a sealing ring is further arranged between the outlet end of the air faucet and the inlet end of the one-way valve.

Optionally, a sealing bolt is further arranged between the outlet end of the air faucet and the inlet end of the one-way valve.

Optionally, the outlet end of the one-way valve is connected with the inlet end of the syringe through an adapter.

Optionally, the battery gassing amount detection device further comprises: the elastic sleeve is sleeved at the joint of the inlet end of the injector and the adapter.

Optionally, the range of the syringe is 1-500 mL.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a battery gassing amount detection device according to an embodiment of the present invention.

Description of reference numerals:

1-air tap, 2-one-way valve, 3-injector, 4-sealing ring, 5-sealing bolt and 6-adapter.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In addition, the inlet end of the syringe in the present invention refers to the lower end of the syringe (the end from which the needle is removed).

In one aspect of the present invention, the utility model provides a battery gassing volume detection device. Referring to fig. 1, according to an embodiment of the present invention, the device for detecting the amount of gassing in a battery includes an air faucet 1, a check valve 2 and a syringe 3 connected in sequence from bottom to top; the inlet end of the air tap 1 is connected with the air outlet of the battery to be tested for gassing amount, the outlet end of the air tap 1 is connected with the inlet end of the one-way valve 2, and the outlet end of the one-way valve 2 is connected with the inlet end of the injector 3.

The battery gassing amount detection device according to the embodiment of the present invention is further described in detail below.

According to the utility model discloses an embodiment, further be provided with sealing washer 4 between the exit end of air cock 1 and the entry end of check valve 2. Sealing washer 4 can play the effect of gasket between the exit end of air cock 1 and the entry end of check valve 2, further improves the gas tightness of device to further improve the accuracy of gas production volume testing result.

According to the utility model discloses an embodiment, further be provided with sealing bolt 5 between the exit end of air cock 1 and the entry end of check valve 2. Therefore, the air tightness of the device can be further improved, and the accuracy of the gas production rate detection result is further improved. In particular, the sealing bolt 5 may be arranged above the sealing ring 4.

According to the embodiment of the utility model, the exit end of check valve 2 is connected through adapter 6 with the entry end of syringe 3. Thereby, a stable connection of the check valve 2 with the injection 3 can be facilitated. It should be noted that the specific structure of the adapter 6 is not particularly limited as long as the outlet end of the check valve 2 can be effectively connected with the inlet end of the syringe 3 while ensuring air tightness.

According to the utility model discloses an embodiment, the utility model discloses a battery gassing volume detection device still further includes: an elastic sleeve (not shown in the drawings). The elastic sleeve is sleeved at the joint of the inlet end of the injector and the adapter. Through the elastic sleeve pipe of establishing of cover, can further improve the entry end of syringe and the fixed stability of adapter to further improve the gas tightness of device. In addition, the specific type of the elastic tube is not particularly limited, and for example, a rubber tube or the like may be selected.

According to the utility model discloses a, the range of syringe 3 can be 1 ~ 500 mL. Therefore, the detection requirements of different battery gassing amounts can be met.

For ease of understanding, the following describes a battery gassing amount detection method implemented by the battery gassing amount detection apparatus of the above-described embodiment.

According to the utility model discloses an embodiment, this battery gassing volume detection method includes: connecting the inlet end of an air tap with the air outlet of the battery to be tested for gassing amount, and enabling the range of the injector to return to zero; vacuumizing a battery with a gas evolution quantity to be detected and a battery gas evolution quantity detection device; starting the battery to operate to enable the battery to generate gas; and extracting the produced gas of the battery by using the injector, and obtaining the produced gas of the battery according to the scales on the injector. Therefore, the method for detecting the gas evolution rate of the battery by adopting the device of the embodiment has stronger reliability and operability, can accurately and efficiently measure the gas evolution rate of the battery, has no limitation on the specific type of the battery to be detected, is suitable for detecting the gas evolution rate of a water-system or non-water-system battery, and widens the types of the battery to be detected.

In addition, it should be noted that all the features and advantages described above for the battery gassing amount detection device are also applicable to the battery gassing amount detection method, and are not described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (6)

1. The device for detecting the gassing amount of the battery is characterized by comprising an air nozzle, a one-way valve and an injector which are sequentially connected from bottom to top; the inlet end of the air tap is connected with the air outlet of the battery to be tested for gassing amount, the outlet end of the air tap is connected with the inlet end of the one-way valve, and the outlet end of the one-way valve is connected with the inlet end of the injector.

2. The device for detecting the amount of gassing in a battery as set forth in claim 1, wherein a sealing ring is further disposed between the outlet end of the air tap and the inlet end of the check valve.

3. The device for detecting the amount of gassing in a battery as set forth in claim 2, wherein a sealing bolt is further provided between the outlet end of the air tap and the inlet end of the check valve.

4. The device for detecting the amount of gassing in a battery as defined in claim 1, wherein the outlet end of said one-way valve is connected to the inlet end of said syringe by means of an adapter.

5. The battery gassing amount detection apparatus according to claim 4, characterized by further comprising: the elastic sleeve is sleeved at the joint of the inlet end of the injector and the adapter.

6. The device for detecting the amount of gassing in a battery according to claim 1, characterized in that the range of the syringe is 1-500 mL.

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