TW202407374A - Battery detecting apparatus - Google Patents

Abstract

A battery detecting apparatus includes a detecting chamber, a pressure sensor, and an electric introduction element. The detecting chamber has an inert gas environment. The pressure sensor is coupled to the detecting chamber to sense pressure changes in the detecting chamber. The electrical introduction element has opposing first end and second end. The first end is located in an atmospheric environment, and the second end is located in the inert gas environment, so as to introduce the current from the outside of the detecting chamber into the interior of the detecting chamber.

Description

Battery testing device

The present invention relates to a detection device, and in particular to a battery detection device.

Generally speaking, finished batteries tend to produce gas during operation. When the gas gradually accumulates, it will cause bulging and rupture. In severe cases, the battery may be damaged. However, current detection devices are often equipped with more expensive components, resulting in high cost, and thus cannot easily detect gas velocity and output in batches. Therefore, it is a challenge to develop a battery testing device that can easily and quantitatively detect the battery gas generation rate and output while having cost advantages.

The present invention provides a battery detection device that can easily and quantitatively detect the battery gas generation rate and output and has cost advantages.

A battery testing device of the present invention includes a testing chamber, a pressure sensor and an electrical introduction component. The detection chamber has an inert gas environment. The pressure sensor is coupled to the detection chamber to sense pressure changes in the detection chamber. The electrical lead-in component has a first end and a second end opposite to each other. The first end is located in the atmospheric environment, and the second end is located in the inert gas environment to introduce current from the outside of the detection chamber into the inside of the detection chamber.

In one embodiment of the present invention, the above-mentioned electrical introduction component includes a first part and a second part. The first part extends from the first end to the inside of the detection chamber, and the second part is connected to the first part and has a pole handle accommodation space.

In an embodiment of the present invention, the above-mentioned second part is grafted by two metal sheets to form a pole handle accommodation space.

In an embodiment of the present invention, each of the above-mentioned metal sheets has a plurality of drill holes, and at least two metal sheets are grafted by locking with a plurality of screws and a plurality of drill holes.

In an embodiment of the present invention, the above-mentioned detection chamber has a cover plate, and the electrical introduction component is welded to the cover plate.

In one embodiment of the present invention, the above-mentioned electrical introduction component is composed of an oxygen-free copper core and silver welded on a copper sheet.

In an embodiment of the present invention, the above-mentioned battery detection device is applied to batteries with a size less than 3 cm × 10 cm × 20 cm.

In an embodiment of the present invention, the above-mentioned battery testing device further includes a gas outlet component connected to the testing chamber to discharge the gas inside the testing chamber.

In an embodiment of the present invention, the above-mentioned battery detection device further includes a gas analyzer connected to a gas outlet component for analyzing gas.

In an embodiment of the present invention, the above-mentioned second end extends a distance from the wall of the detection chamber, and the distance is between 20 mm and 60 mm.

Based on the above, through the combination of the pressure sensor and the electrical lead-in component, the present invention can design the electrical lead-in component to penetrate the detection chamber, so that the battery in the detection chamber can operate, and then the pressure sensor can be coupled to the detection chamber. , to sense the pressure changes in the detection chamber, and the aforementioned design does not use components such as flow controllers that increase costs. In this way, the battery gas generation rate and output can be easily and quantitatively detected and have cost advantages.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

Exemplary embodiments of the present invention will be fully described below with reference to the accompanying drawings, although the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the sizes and thicknesses of various regions, locations and layers are not drawn to actual scale for clarity. To facilitate understanding, the same components in the following description will be labeled with the same symbols.

It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, and/or sections or parts thereof shall not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

1A is a partial perspective view of a battery testing device from one perspective according to an embodiment of the present invention. 1B is a partial perspective view of a battery testing device from another perspective according to an embodiment of the present invention. FIG. 1C is a schematic three-dimensional view of a battery testing device according to an embodiment of the present invention.

Please refer to FIG. 1A , FIG. 1B and FIG. 1C . In this embodiment, the battery testing device 100 includes a testing chamber 110 , a pressure sensor 120 and an electrical introduction component 130 . The testing chamber 110 has an inert gas environment 112 . Furthermore, the pressure sensor 120 is coupled to the detection chamber 110 to sense pressure changes in the detection chamber 110, and the electrical introduction element 130 has an opposite first end 130a and a second end 130b, where the first end 130a is located in the atmospheric environment 102 (for example, exposed to air), and the second end 130b is located in the inert gas environment 112, so as to introduce the current 10 from the outside of the detection chamber 110 (such as the atmospheric environment 102) into the inside of the detection chamber ( Such as inert gas environment 112). Accordingly, in this embodiment, through the combination of the pressure sensor 120 and the electrical lead-in component 130, the electrical lead-in component 130 can be designed to penetrate the detection chamber 110, so that the battery 20 in the detection chamber 110 can operate, and then the pressure The sensor 120 is coupled to the detection chamber 110 to sense the pressure change in the detection chamber 110. The foregoing design does not use components such as flow controllers that would increase the cost. In this way, the battery can be easily and quantitatively detected. 20 gas rate and output with cost advantages. Here, the current 10 is, for example, connected to the charger and discharger 104 through the electric introduction element 130 for charging and discharging, but the invention is not limited thereto.

Furthermore, the battery 20 with a hole in the package can be charged and discharged in the detection chamber 110 filled with inert gas 112. The amount of gas will directly respond to the increase in pressure, so the actual pressure within the package can be evaluated and converted. size to quantitatively detect the gas production rate and output of the battery 20 .

In some embodiments, the battery testing device of this embodiment can be applied to the testing of large finished batteries (soft-pack batteries or hard-shell batteries), where the size of the battery 20 to be tested is less than 3 centimeters (cm) × 10 cm × 20 centimeters, but the present invention is not limited thereto.

In some embodiments, the electrical introduction element 130 includes a first part 131 and a second part 132, and the first part 131 extends from the first end 130a to the inside of the detection chamber 110, and the second part 132 is connected to the first part 131 and has a pole handle. Accommodation space C, wherein the pole handle accommodation space C is used to accommodate the pole handle 22 of the battery 20 (such as the positive electrode/negative electrode handle).

Furthermore, the second part 132 can be formed by grafting at least two metal sheets to form the pole handle accommodation space C, and each metal sheet has a plurality of drill holes 132a. The at least two metal sheets 132 are connected by a plurality of screws 30 and a plurality of screws. A drill hole 132a is locked for grafting. Therefore, the above fixing method can simply and effectively fix the metal piece, reducing the risk of falling off when pulled by external force. It should be noted that the drawings schematically illustrate two metal sheets, but the present invention does not limit the number of metal sheets. In other embodiments, different numbers of metal sheets can be configured. In addition, for clear explanation, the second part 132 of FIG. 1A is a schematic diagram after disassembly.

In some embodiments, the distance between the long sides of adjacent drill holes is at least greater than 20 millimeters (mm), and the size of each metal piece may be 30 mm × 20 mm, but the invention is not limited thereto.

In some embodiments, the thickness of the aforementioned metal sheet is, for example, 2 mm, but the invention is not limited thereto.

In some embodiments, the electrical introduction component 130 is low-resistance copper. For example, the electrical introduction component 130 can be composed of an oxygen-free copper core and silver soldering (such as low-temperature silver soldering) on a copper sheet. In this way, it can Reduce the contact resistance between the clamp of the charger and discharger 104 and the positive and negative electrodes and copper core of the battery 20. In addition, the detection chamber 110 has a cover plate 40, and the electrical introduction element 130 is welded (for example, tungsten inert gas welding (TIG)) to the cover plate 40. In this way, the airtightness of the chamber can be maintained while ensuring The battery 20 in the chamber can be charged and discharged using the charger and discharger 104, so it can have an external resistance lower than 3mΩ to avoid the IR voltage drop from affecting the actual performance of the battery 20, but the invention is not limited thereto.

In some embodiments, the inert gas environment 112 can be filled with argon or other suitable inert gases inside the detection chamber 110 before detection, so that the detection chamber 110 has a predetermined pressure value, and the detection is stopped when the detection is performed. Inert gas is introduced into the chamber 110, so there is no need to configure an additional flow controller for controlling the inert gas, thereby further reducing the operating difficulty of the battery detection device 100 and further improving the cost advantage, but the present invention is not limited thereto. Here, the predetermined pressure value is, for example, normal pressure (1 atmosphere), but the present invention is not limited thereto, and the predetermined pressure value can be adjusted according to actual design requirements.

In some embodiments, the electrical introduction component 130 has a ceramic housing 134 close to the cover 40, but the invention is not limited thereto.

In some embodiments, the length of the first portion 131 of the electrical introduction element 130 located in the atmospheric environment 102 may be between 40 mm and 50 mm, but the invention is not limited thereto.

In some embodiments, the detection chamber may be defined by the stainless steel container 50 and the cover plate 40 . The size of the defined detection chamber 110 is, for example, 12.5 cm in diameter and 30 cm in height, but the invention is not limited thereto.

In some embodiments, the battery testing device 100 further includes a gas outlet element 140 connected to the testing chamber 110 to discharge the gas inside the testing chamber 110, but the invention is not limited thereto. In addition, the battery detection device 100 further includes a gas analyzer 150 connected to the gas outlet element 140 to analyze the aforementioned gases. However, the present invention is not limited thereto. In other embodiments, the gas analyzer may not be included and the gas analyzer may be directly discharged from the detection chamber. The gas storage inside 110 is separately detected, so the battery testing device 100 can have a lot of operational flexibility. Here, the gas outlet element 140 is, for example, a pressure relief valve, but the invention is not limited thereto.

In some embodiments, the second end 130b extends a distance d from the wall of the detection chamber 110. For example, the detection chamber 110 has an opposite outer wall 110a and an inner wall 110b, and the second end 130b is formed by The inner wall surface 110b of the detection chamber 110 extends out, and the distance d is between 20 mm and 60 mm, but the invention is not limited thereto.

In some embodiments, there are two sets of electrical introduction elements 130 to respectively connect the positive and negative electrodes of the battery 20 , and the distance between the first parts 131 of the two sets of electrical introduction elements 130 is, for example, 65 mm, but the invention is not limited thereto. .

In some embodiments, when the gas generated by the battery 20 is corrosive gas, the electrical introduction component 130 may further be provided with protective glue on its surface to achieve the effect of corrosion protection, but the invention is not limited thereto.

In some embodiments, since thermal runaway does not occur during the operation of aluminum batteries, when the battery detection device 100 is applied to aluminum batteries, it does not need to be equipped with components such as temperature sensors to further increase its cost. advantages, but the invention is not limited thereto.

In some embodiments, the pressure sensor 120 may be a ceramic pressure sensor and may be used with a recorder, for example, in which the parameter setting may be a gas pressure range between 0 bar and 5 bar, and a current range of 0 bar. Between milliamps and 40 milliamps, the accuracy can be 0.25%, but the invention is not limited to this, and the parameter settings can be set according to actual use requirements.

It should be noted that the data results detected by the aforementioned battery detection device 100 can be further introduced into the design and improvement of the battery itself.

To sum up, by combining the pressure sensor and the electrical lead-in component of the present invention, the electrical lead-in component can be designed to penetrate the detection chamber, so that the battery in the detection chamber can operate, and then the pressure sensor can be coupled to detect chamber to sense pressure changes in the chamber, and the aforementioned design does not use components such as flow controllers that would increase costs. In this way, the battery gas rate and output can be easily and quantitatively detected and have cost advantages.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

10:Current 20:Battery 22:pole handle 30:Screw 40:Cover 50: Stainless steel container 100:Battery testing device 102:Atmospheric environment 104:Charger and discharger 110:Detection chamber 110a:Outer wall surface 110b: Inner wall surface 112: Inert gas environment 120: Pressure sensor 130: Electrical introduction components 130a: first end 130b:Second end 131:Part One 132:Part 2 132a: Drilling 134: Ceramic shell 140:Gas outlet component 150:Gas analyzer C: pole handle accommodation space d: distance

1A is a partial perspective view of a battery testing device from one perspective according to an embodiment of the present invention. 1B is a partial perspective view of a battery testing device from another perspective according to an embodiment of the present invention. FIG. 1C is a schematic three-dimensional view of a battery testing device according to an embodiment of the present invention.

10:Current

20:Battery

22:pole handle

30:Screw

40:Cover

50: Stainless steel container

100:Battery testing device

102:Atmospheric environment

110:Detection chamber

110a:Outer wall surface

110b: Inner wall surface

112: Inert gas environment

120: Pressure sensor

130: Electrical introduction components

130a: first end

130b:Second end

131:Part One

132:Part 2

132a: Drilling

140:Gas outlet component

150:Gas analyzer

C: pole handle accommodation space

d: distance

Claims (10)

A battery testing device including: The detection chamber has an inert gas environment; A pressure sensor coupled to the detection chamber to sense pressure changes in the detection chamber; and An electrical introduction component having an opposite first end and a second end, wherein the first end is located in the atmospheric environment, and the second end is located in the inert gas environment, so as to pass the current from the outside of the detection chamber. introduced into the interior of the detection chamber. The battery testing device according to claim 1, wherein the electrical introduction element includes a first part and a second part, the first part extends from the first end to the inside of the testing chamber, and the second part The first part is connected and has a pole handle accommodation space. The battery testing device according to claim 2, wherein the second part is grafted by at least two metal sheets to form the pole handle accommodating space. The battery testing device according to claim 3, wherein each of the metal sheets has a plurality of drill holes, and the at least two metal sheets are locked with the plurality of drill holes by a plurality of screws to perform the grafting. . The battery testing device according to claim 1, wherein the testing chamber has a cover plate, and the electrical introduction element is welded to the cover plate. The battery testing device according to claim 1, wherein the electrical introduction element is composed of oxygen-free copper core silver welded on a copper sheet. The battery testing device as claimed in claim 1, wherein the battery testing device is applied to batteries with a size less than 3 cm x 10 cm x 20 cm. The battery testing device of claim 1 further includes a gas outlet element connected to the testing chamber to discharge gas inside the testing chamber. The battery testing device of claim 8 further includes a gas analyzer connected to the gas lead-out element to analyze the gas. The battery testing device of claim 1, wherein the second end extends a distance from the wall of the testing chamber, and the distance is between 20 mm and 60 mm.

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