KR102236591B1 - Reserve battery having puncher for improved impact resistance - Google Patents

Abstract

The present invention relates to a micro storage battery provided with a puncher for impact resistance improvement. With the present invention, the impact resistance of a side surface can be enhanced during electrolyte injection and a partition wall can be easily broken in the event of activation. The battery includes: a case portion having the shape of a hollow pipe; an electrode portion disposed in a lower portion inside the case portion and having a positive electrode, a separator, and a negative electrode; a separating portion provided with a partition wall for separation between a lower space where the electrode portion is disposed and an upper space separated from the lower space and used for the upper space to be filled with an electrolyte; a header coupled to the lower side of the case portion; a battery cover coupled to the upper side of the case portion; and a puncher inserted in the case portion and coupled to the battery cover and the case portion. The puncher is coupled so as to be in contact with the lower surface of the battery cover and in partial contact with the side wall of the case portion.

Description

Ultra-compact storage battery equipped with a puncher to improve impact resistance {RESERVE BATTERY HAVING PUNCHER FOR IMPROVED IMPACT RESISTANCE}

The present invention relates to a micro-storage battery provided with a puncher for improving impact resistance, and more particularly, in addition to enhancing the impact resistance to the sidewall of the case portion when the electrolyte is injected, two functions of destroying the partition wall during activation are simultaneously performed. The present invention relates to a micro-storage battery equipped with a puncher for improving impact resistance, which is designed to facilitate destruction of partition walls during activation while being able to improve impact resistance by introducing a satisfactory puncher.

The reserve battery was developed to overcome the shortcomings of the primary battery, which loses the function of the battery over time due to continuous natural discharge. Such a storage battery is stored in an inactive state by isolating the electrolyte and the electrode from each other, and has the advantage of prolonging the life of the battery by suppressing natural discharge by activating the electrolyte when used.

Conventional storage batteries are accommodated in a case with an upper and lower part open, a partition wall made of glass that is inserted and installed inside the case to separate the inner space of the case into an upper space and a lower space, and the upper and lower spaces of the case, respectively. It consists of an electrolyte solution and an electrode portion, and a battery cover and a header respectively installed at the upper and lower ends of the case. Such a storage battery is configured to cause the electrolyte and the electrode to react by damaging the partition wall separating the electrolyte from the electrode portion when the battery is used.

However, the conventional storage battery has a disadvantage in that the partition wall is formed of a glass material having low impact resistance, so that the partition wall is easily damaged by an external impact, and a natural discharge is made so that the desired battery performance cannot be exhibited.

1 is a cross-sectional view showing a conventional storage battery.

As shown in FIG. 1, in the conventional storage battery 1, a separating part 30 into which an electrolyte solution 34 is impregnated is disposed in an upper space separated by a partition wall 32, and an electrode part ( 20) is placed.

The header 40 is installed in the open lower part of the case part 10 to seal the inside of the case part 10, and the battery cover 50 is installed in the open upper part of the case part 10 to provide the case part 10 ) To seal the inside. In this case, the electrode unit 20 is installed in the lower space of the case unit 10 and includes an anode 22, a separator 24, and a cathode 26. The positive pin 45 of the header 40 is electrically connected to the positive electrode 22. Here, the header 40 is electrically insulated from the anode pin 45 by the sealing member 42.

At this time, the case portion 10 is made of an outer case 12 and an inner case 14.

The separating part 30 further includes a support ring 36 disposed in the upper space. At this time, the support ring 36 is forcibly fitted to an intermediate point in the longitudinal direction inside the inner case 14.

In the conventional storage battery 1 having the above-described configuration, the inner case 14 mounted inside the outer case 12 absorbs the shock generated from the sidewall of the outer case 12, and The support ring 36 is forcibly fitted inside to pressurize the inner side of the inner case 14 to secure durability and impact resistance.

At this time, the support ring 36 was installed at an intermediate point in the longitudinal direction of the inner case 14 so that shock absorption and dispersion were achieved.

However, in the conventional storage battery 1, since the support ring 36 is coupled to the inside of the inner case 14 by a force-fitting coupling method, the adhesion strength with the inner case 14 is not strong, so that external shock or vibration is not possible. When it occurs, the support ring 36 is separated from the engagement position and has a disadvantage in that it cannot perform its original function.

That is, when a shock or vibration occurs from the outside, the support ring 36 is not firmly mounted inside the inner case 14, so that the support ring 36 is separated, and when the shock and vibration continue, the support ring 36 ) Is separated to a point adjacent to the partition wall 32, thereby losing the original function of the support ring 36.

In addition, in the conventional storage battery 1, the electrolyte 34 must be maintained in an inactive state before using the battery, but the separation of the support ring 36 reduces the durability and impact resistance of the battery, thereby shortening the lifespan. Causes problems.

As a related prior document, there is Korean Patent Publication No. 10-0733894 (announced on July 2, 2007), and a non-storage unit battery is described in the document.

The object of the present invention is to enhance impact resistance in all directions (X-axis, Y-axis, Z-axis). In order to enhance impact resistance in all directions, some of the existing non-storage battery parts are integrated to provide multiple functions as one part. It is to provide an ultra-small storage battery equipped with a puncher for improving the implemented impact resistance.

Another object of the present invention is to enhance the impact resistance to the sidewall of the case part when the electrolyte is injected, and to improve the impact resistance by introducing a puncher that simultaneously satisfies the two functions of destroying the partition wall during activation, while destroying the partition wall during activation. It is to provide a micro-storage battery with a puncher for improving the impact resistance designed to be easy.

In order to achieve the above object, a micro-storage battery provided with a puncher for improving impact resistance according to an embodiment of the present invention includes: a case portion having a hollow pipe shape; An electrode portion disposed below the case portion and having an anode, a separator, and a cathode; A separation unit having a partition wall separating a lower space in which the electrode unit is disposed and an upper space separated from the lower space, and for filling an electrolyte solution in the upper space; A header coupled to the lower side of the case portion; A battery cover coupled to the upper side of the case part; And a puncher inserted and disposed inside the case unit and coupled to the battery cover and the case unit, wherein the puncher is in contact with a lower surface of the battery cover and is coupled to partially contact a side wall of the case unit. It is done.

Here, the puncher may include a vertical portion installed along a vertical direction in a central portion of the case portion; A horizontal portion extending in a horizontal direction from the vertical portion and extending to contact a lower surface of the battery cover; A protruding portion protruding from the horizontal portion in a vertical direction parallel to the vertical portion and in contact with the sidewall of the case portion; And a hammer portion coupled to a lower end of the vertical portion to strike the partition wall.

The protruding portion has an outer side having a straight line shape parallel to the vertical portion, and an inner side having a diagonal shape having a constant inclination with respect to the horizontal portion.

It is preferable that the hammer part has a larger area than the vertical part.

The micro-storage battery equipped with a puncher for improving impact resistance according to the present invention has a function for enhancing impact resistance to the sidewall of the case unit without installing additional parts such as a support ring, and if necessary, it is easy to easily make a partition wall made of glass material. By means of a puncher that can be destroyed, it becomes possible to complement the upper and lower impact resistance and the left and right impact resistance at the same time.

Accordingly, the micro-storage battery equipped with a puncher for improving impact resistance according to the present invention is required to additionally mount a support ring due to the introduction of a puncher that simultaneously performs the function used by the support ring as well as the function of hitting the partition wall. There is no component manufacturing cost can be reduced.

In addition, since the ultra-compact storage battery provided with a puncher for improving impact resistance according to the present invention can simultaneously supplement the upper and lower impact resistance and the left and right impact resistance by a puncher partially coupled to the side wall of the case portion in a force-fitting form, It is possible to withstand a high impact amount of 18,000G or more, more preferably 20,000G or more in all directions of the 4 axes (X axis, +Y axis, -Y axis, Z axis).

1 is a cross-sectional view showing a conventional storage battery.
2 is a cross-sectional view showing a micro-storage battery provided with a puncher for improving impact resistance according to an embodiment of the present invention.
3 is a schematic diagram schematically showing a micro-storage battery provided with a puncher for improving impact resistance according to an embodiment of the present invention.
4 is an exploded view showing the micro-storage battery of FIG. 3.
5 is an enlarged view showing an enlarged puncher of FIG. 2.
6 is an enlarged perspective view of the puncher of FIG. 2.
7 is a perspective view for explaining the axial direction of a micro-storage battery in a high impact test method according to an embodiment of the present invention.
Figure 8 (A) shows the non-storage battery of the present invention in the state before the high impact test, Figure 8 (b) shows the battery cover part of the conventional non-storage battery in the state after the high impact test, Figure 8 (c) shows the battery cover part of the non-storage battery of the present invention in a state after the high impact test.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only this embodiment is intended to complete the disclosure of the present invention, and the general knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to the possessor, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

Hereinafter, with reference to the accompanying drawings, a detailed description will be given of a micro-sized non-storage battery having a puncher for improving impact resistance according to a preferred embodiment of the present invention.

2 is a cross-sectional view showing a micro-storage battery having a puncher for improving impact resistance according to an embodiment of the present invention, and FIG. 3 is a micro-storage battery having a puncher for improving impact resistance according to an embodiment of the present invention. It is a schematic diagram schematically showing, and FIG. 4 is an exploded view showing the micro-sized storage battery of FIG. 3.

2 to 4, the ultra-small non-storage battery 100 provided with a puncher for improving impact resistance according to an embodiment of the present invention includes a case part 110, an electrode part 120, a separation part 130, A header 140, a battery cover 150, and a puncher 160 are included.

The case part 110 has a pipe shape with an empty inside. Although not shown in detail in the drawings, the case unit 110 may be provided with an electrolyte injection hole (not shown) penetrating through the upper sidewall. The electrolyte injection port is sealed after the electrolyte solution 134 is injected into the upper space separated by the partition wall 132.

The case unit 110 includes an outer case 112 and an inner case 114. The outer case 110 has a pipe shape having a first outer diameter. In addition, the inner case 114 has a second outer diameter smaller than the first outer diameter in order to fit into the outer case 112.

In this case, the inner case 114 may be provided with a stepped protruding inwardly at the lower end portion and connected in a concentric circle. The edge portion of the partition wall 132 is seated on the stepped jaw. At this time, the partition wall 132 is separated into an upper space and a lower space, an electrolyte solution 134 is filled in the upper space, and an electrode part 120 is installed in the lower space.

The electrode unit 120 is disposed below the case unit 110 and includes an anode 122, a separator 124, and a cathode 126. The electrode unit 120 is installed in a lower space separated by a partition wall 132. At this time, the positive pin 145 of the header 140 is electrically connected to the positive electrode 122. Here, the header 140 is electrically insulated from the positive electrode pin 145 by the sealing member 142.

The separating unit 130 includes a partition wall 132 separating the electrode unit 120 into a lower space in which the electrode unit 120 is disposed and an upper space separated from the lower space, and is installed to fill the electrolyte solution 134 in the upper space.

The header 140 is coupled to the lower side of the case unit 110. The header 140 is installed under the opened lower part of the case part 110 to seal the inside of the case part 110.

The battery cover 150 is coupled to the upper side of the case portion 110. The battery cover 150 is installed on the opened upper part of the case part 110 to seal the inside of the case part 110.

The puncher 160 is inserted and disposed inside the case unit 110 and is coupled to the battery cover 150 and the case unit 110.

The puncher 160 is in contact with the lower surface of the battery cover 150 and is coupled to partially contact the sidewall of the case unit 110. Accordingly, the puncher 160 of the present invention is partially coupled to the sidewall of the case unit 110 in the form of a force-fitting coupling, thereby simultaneously supplementing the upper and lower impact resistance and the left and right impact resistance.

The ultra-small non-storage battery 100 having a puncher for improving impact resistance according to the embodiment of the present invention can reduce setback while maintaining the electrode structure of the battery under high impact.

That is, the present invention can suppress the reaction force phenomenon applied to the battery even after a high impact amount of 18,000 G or more, more preferably 20,000 G or more is applied to the micro-storage battery 100, and can operate as a battery normally even after a high impact. do.

As described above, there is a need for a design of the puncher 160 capable of securing the impact resistance that enables the electrode and activation of the battery to be normally performed after a high impact is applied with an impact amount of 20,000G or more. In order to secure impact resistance, the puncher 160, which is a component that can make a passage through which the electrolyte 134 can move to the electrode unit 120 by hitting, plays a key role. Shape is important.

To this end, the puncher 160 of the present invention integrates and performs two functions. That is, the puncher 160 of the present invention enhances the impact resistance of the side surface when the electrolyte solution 134 is injected, enhances impact resistance in all directions, and simultaneously satisfies the two functions of destroying the partition wall 132 when activated. Let it.

If, after the injection of the electrolyte 134, the partition wall 132 made of the glass material inside the case 110 is destroyed due to a facility error when the closing pin is pressed, the function of the micro storage battery 100 can be performed. none. Therefore, in the related art, a component called a ring for protecting the partition wall made of a glass material has been added.

In contrast, in the present invention, a puncher capable of easily destroying the partition wall 132 made of glass material when necessary and a function for enhancing impact resistance to the side wall of the case unit 110 without mounting additional parts such as a ring. By introducing (160), it was made possible to complement the upper and lower impact resistance and the left and right impact resistance at the same time.

This will be described in more detail below with reference to the accompanying drawings.

FIG. 5 is an enlarged view showing an enlarged puncher of FIG. 2, and FIG. 6 is a perspective view showing an enlarged view of the puncher of FIG. 2, and will be described in connection with FIG. 2.

2, 5 and 6, the puncher 160 of the present invention includes a vertical portion 162, a horizontal portion 164, a protrusion portion 166, and a hammer portion 168.

The vertical portion 162 of the puncher is installed along the vertical direction at the central portion of the inner case portion 110. The vertical portion 162 of the puncher may have a cylindrical shape.

The horizontal portion 164 of the puncher extends in a horizontal direction from the vertical portion 162 of the puncher, and extends so as to contact the lower surface of the battery cover 150. The horizontal portion 164 of the puncher may have a circular plate shape.

The protrusion 166 of the puncher protrudes from the horizontal portion 164 of the puncher in a vertical direction parallel to the vertical portion 162 of the puncher, and contacts the side wall 132 of the case portion 110. At this time, since the protrusion 166 of the puncher has a structure that protrudes in a vertical direction parallel to the vertical portion 162 from the horizontal portion 164, the impact resistance is increased by expanding the contact area with the sidewall of the case portion 110. You will be able to improve.

In this way, the puncher 160 of the present invention is fastened to the case portion 110, in particular, the inner case 114 of the case portion 110 by the protrusion portion 166 in a form of force-fitting, so that excellent impact resistance can be secured. I can.

Accordingly, the ultra-small non-storage battery 100 provided with a puncher for improving impact resistance according to the present invention is partially coupled to the side wall 132 of the case unit 110 in a force-fitting form, so that the upper and lower impact resistance and the left and right It is possible to complement the impact resistance of the at the same time.

The protrusion 166 of the puncher has an outer side having a straight line shape parallel to the vertical portion 162 of the puncher, and the inner side has a diagonal shape having a constant inclination θ with respect to the horizontal portion 162 of the puncher. In this way, the inner side of the protrusion 166 of the puncher is designed in a diagonal shape having a constant inclination with respect to the horizontal portion 164 of the puncher, so that the volume for storing the electrolyte solution 134 filled in the upper space is prevented from being reduced. You can do it.

To this end, the inclination θ formed by the inner side of the protrusion 166 of the puncher and the horizontal portion 164 of the puncher is preferably designed to be 100 to 140°. If the slope θ is less than 100°, it may be difficult to secure a volume for storing the electrolyte solution 134. Conversely, if the slope (θ) exceeds 140°, it is advantageous to secure the volume for storing the electrolyte solution 134, but it is difficult to secure the left and right impact resistance as it acts as a factor that decreases the thickness of the protrusion 166 of the puncher. You can follow.

The hammer portion 168 of the puncher is coupled to the lower end of the vertical portion 162 of the puncher to strike the partition wall 132. It is preferable that the hammer portion 168 of the puncher has a larger area than the vertical portion 162 of the puncher, which is a glass when activated when the hammer portion 166 of the puncher is designed to have a larger area than the vertical portion 162 of the puncher. This is because the breaking force for the partition wall 132 of the material can be improved.

The puncher of the present invention having the above-described configuration integrates and performs two functions. That is, the puncher of the present invention not only enhances the impact resistance of the side surface when the electrolyte is injected, but also satisfies the two functions of destroying the partition wall when activated.

As described above, in the present invention, without installing additional parts such as a support ring, by a puncher capable of easily destroying a partition wall made of glass material and a function for enhancing impact resistance to the side wall of the case part, if necessary, the upper and lower impact resistance and It becomes possible to complement the left and right impact resistance at the same time.

Accordingly, the micro-storage battery equipped with a puncher for improving impact resistance according to an embodiment of the present invention can be equipped with a ring by introducing a puncher that simultaneously performs the function used by the support ring as well as the function of hitting the partition wall. Since there is no need, it is possible to reduce the cost of manufacturing parts.

In addition, since the ultra-compact storage battery provided with a puncher for improving impact resistance according to the present invention can simultaneously supplement the upper and lower impact resistance and the left and right impact resistance by a puncher partially coupled to the side wall of the case portion in a force-fitting form, It is possible to withstand a high impact amount of 18,000G or more, more preferably 20,000G or more in all directions of the 4 axes (X axis, +Y axis, -Y axis, Z axis).

Hereinafter, with reference to the accompanying drawings will be described with respect to the high impact test method of the micro-sized non-storage battery according to an embodiment of the present invention.

7 is a perspective view for explaining the axial direction of a micro-storage battery in a high impact test method according to an embodiment of the present invention.

As shown in FIG. 7, a method for testing a high impact of a micro-sized non-storage battery according to an embodiment of the present invention will be described as follows.

First, insert the micro-storage battery 100 into the bud. In this case, as the micro-storage battery 100, the micro-storage battery described with reference to FIGS. 2 and 3 is used.

At this time, the tester is a high-impact tester that fires by filling gas and applying pressure. By using a jig for each axis direction (X axis, +Y axis, -Y axis, Z axis), the ultra-small storage battery 100 is fixed in the bird to apply an impact value of about 20,000G. At this time, the impact value can be converted into an acceleration value.

In this step, the success condition is that there is little deformation or no leakage occurs so that the change in the appearance of the storage battery 100 is difficult to observe with the naked eye, and after the test, a force of 1 kgf or less is applied to confirm normal operation, and then the battery performance is affected. At the same time, you must meet that there is nothing wrong.

In addition, the failure condition is one of a change in the external shape of the storage battery 100 that is large enough to be visible with the naked eye or a leakage occurs, and a force of 1 kgf or less is applied after the test to prevent normal operation or cause an abnormality in performance. This is the case when conditions are met.

As described above, the high impact test method of the micro-sized non-storage battery according to the embodiment of the present invention can be terminated.

Example

Hereinafter, the configuration and operation of the present invention will be described in more detail through preferred embodiments of the present invention. However, this has been presented as a preferred example of the present invention and cannot be construed as limiting the present invention in any sense.

Contents not described herein can be sufficiently technically inferred by those skilled in this technical field, and thus description thereof will be omitted.

1. High impact test results

Table 1 shows the results of a high impact test for the present invention and a conventional non-storage battery. In addition, Figure 8 (A) shows the non-storage battery of the present invention in the state before the high impact test, Figure 8 (b) shows the battery cover part of the conventional non-storage battery in the state after the high impact test, and Fig. 8(c) shows the battery cover part of the non-storage battery of the present invention after the high impact test.

[Table 1]

As shown in Table 1 and (A), (B), and (C) of FIG. 8, the defect rate of the conventional non-storage battery was measured to be approximately 45%. At this time, it can be seen that the battery cover is severely crushed in the external direction due to the generation of setback in all 20 cells of the conventional storage battery.

On the other hand, the non-storage battery of the present invention was measured to have a defective rate of 0%, and it can be seen that the setback is alleviated upon visual inspection.

As can be seen on the basis of the above experimental results, the non-storage battery of the present invention was verified to have impact resistance in all directions of the 4 axes as a result of testing the impact resistance for 20,000G with 4 axes.

Although the above has been described with reference to the embodiments of the present invention, various changes or modifications can be made at the level of those of ordinary skill in the art to which the present invention pertains. Such changes and modifications may be said to belong to the present invention as long as they do not depart from the scope of the technical idea provided by the present invention. Therefore, the scope of the present invention should be determined by the claims set forth below.

100: micro-sized non-storage battery 110: case
112: outer case 114: inner case
120: electrode part 122: anode
124: separator 126: negative electrode
130: separation unit 132: bulkhead
134: electrolyte 140: header
142: sealing member 145: header pin
150: battery cover 160: puncher
162: vertical portion of the puncher 164: horizontal portion of the puncher
166: protruding portion of the puncher 168: hammer portion of the puncher

Claims (4)

A case portion having a hollow pipe shape;
An electrode portion disposed below the case portion and having an anode, a separator, and a cathode;
A separation unit having a partition wall separating the electrode unit into a lower space in which the electrode unit is disposed and an upper space separated from the lower space, and for filling an electrolyte in the upper space;
A header coupled to the lower side of the case portion;
A battery cover coupled to the upper side of the case part; And
Includes; a puncher inserted and disposed inside the case part, coupled to the battery cover and the case part,
The puncher is in contact with the lower surface of the battery cover and is coupled to partially contact the sidewall of the case portion,
The puncher may include a vertical portion installed along a vertical direction at a central portion inside the case portion; A horizontal portion extending in a horizontal direction from the vertical portion and extending to contact a lower surface of the battery cover; A protruding portion protruding from the horizontal portion in a vertical direction parallel to the vertical portion and in contact with the sidewall of the case portion; And a hammer part coupled to the lower end of the vertical part to strike the partition wall,
The protrusion has a straight line shape in which the outer side is parallel to the vertical part, and the inner side has a diagonal shape having a constant inclination with respect to the horizontal part,
A micro-storage battery with a puncher for improving impact resistance, characterized in that the inclination formed by the inner side of the protrusion of the puncher and the horizontal portion of the puncher is 100 to 140°.
delete delete The method of claim 1,
The hammer part
Micro-sized storage battery with a puncher for improving impact resistance, characterized in that it has a larger area than the vertical portion.

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