KR20140007100A - Battery cell and battery module using the same - Google Patents

Abstract

Disclosed is a battery cell capable of extending a battery cell without laminating the number of battery cell and a battery module using the same. According to the present invention, the battery cell includes a main body, at least one rail installed on the main body, and at least a rail and one rail groove formed on one side of the main body where the rail is not installed.

Description

Battery cell and battery module using same {Battery cell and Battery module using the same}

The present invention relates to a battery cell and a battery module using the same, and more particularly, to a battery cell and a battery module using the same for voltage expansion or current amount expansion.

In recent years, interest in secondary batteries has rapidly increased due to economic advantages and environmental advantages. Secondary batteries are devices that store external electrical energy in the form of chemical energy and then generate electricity when needed. Recently, the range of applications of the rechargeable battery has been expanded to electric vehicles. The secondary battery is composed of at least one battery cell, and depending on the use environment and purpose of use, the plurality of battery cells may be electrically connected to expand a voltage or may be used to extend the amount of current. In this case, the plurality of electrically connected battery cells must be firmly supported to maintain the electrical connection.

As described above, a technology for allowing the plurality of battery cells to be electrically connected and the plurality of battery cells to be firmly supported has already been disclosed in the Republic of Korea Patent Publication No. 2012-0051237; Battery Module Case. The patent includes a top, bottom, side detachable case, so that a plurality of battery cells are stably supported by the case.

However, if a separate case for supporting a plurality of battery cells is configured as in the registered patent, there are the following problems.

First, as the number of battery cells fastened inside the case is limited, the expansion of the battery cells is limited.

Second, there is a problem in that the weight, appearance, etc. of the entire battery module composed of a plurality of battery cells are enlarged more than necessary.

Third, there is a problem that the manufacturing cost of the battery module is increased.

Republic of Korea Patent Publication No. 2012-0051237 (published Jun. 29, 2002)

A first object of the present invention is to provide a battery cell and a battery module using the same, which can extend a battery cell without being limited to the number of battery cells.

A second object of the present invention is to provide a battery cell and a battery module using the same, which enables to manufacture a slim battery module.

A third object of the present invention is to provide a battery cell and a battery module using the same to reduce the manufacturing cost.

The battery cell according to the present invention includes a main body, at least one rail installed on the main body, and at least one rail groove formed on another surface of the main body in which the rail is not installed.

The rail may have a cross section gradually expanding in the outward direction of the main body, and the rail groove may have a cross section gradually expanding in the inward direction of the main body.

The rail may have a cooling hole that is opened to the outside.

Meanwhile, the battery module according to the present invention includes at least one first rail installed in the first body and at least one first rail groove formed in the other surface of the first body in which the first rail is not installed. At least one second rail installed in the first battery cell and the second body and a second battery cell in which at least one second rail groove is formed on the other surface of the second body in which the second rail is not installed. The first rail slides along the second rail groove, or the second rail slides in the first rail groove to engage the first battery cell and the second battery cell.

The first rail and the second rail have a cross section gradually extending outwardly of the first body and the second body, and the first rail groove and the second rail groove have the first body and the second rail groove. It may have a cross section gradually enlarged in the inner direction of the main body.

Cooling holes opening to the outside may be formed in the first rail and the second rail.

The battery module is disposed between the first rail and the second rail groove so that the slide driving of the first battery cell or the second battery cell is stopped at an alignment position between the first battery cell and the second battery cell. The display device may further include an alignment unit installed between the second rail and the first rail groove.

The alignment unit includes an alignment groove formed in any one of the first rail and the second rail groove and any one of the second rail and the first rail groove, and the first rail and the first groove not formed with the alignment groove. It may include a stopper installed in the other one of the two rail groove and the other of the second rail and the first rail groove.

The stopper may further include a ball installed in the other one of the first rail and the second rail groove and the other one of the first rail and the first rail groove and the elastic body elastically supporting the ball. It may include.

The stopper is installed on the other one of the first rail and the second rail groove and the other of the first rail and the first rail groove is not formed, the convex portion at a position corresponding to the alignment groove It may be a leaf spring formed.

The stopper may further include a lead extending from the leaf spring and exposed to the outside of the first battery cell and the second battery cell fastened to an alignment position.

The battery cell and the battery module using the same according to the present invention have an effect of expanding the number of battery cells without being limited to the number of battery cells.

In addition, the battery cell and the battery module using the same according to the present invention has the effect of manufacturing a slim battery module.

In addition, the battery cell and the battery module using the same according to the present invention has the effect of reducing the manufacturing cost of the battery module.

1 is a view showing a battery module according to a first embodiment.
2 is a view illustrating an extended state of a battery module according to a first embodiment.
3 is an enlarged view of an “I” portion shown in FIG. 2 and illustrates an alignment of the battery module according to the first embodiment.
4 is an enlarged view of an “I” portion shown in FIG. 2 and illustrates an alignment portion of the battery module according to the first embodiment.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only examples of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents and modifications may be made thereto .

1 is a perspective view illustrating a battery module according to a first embodiment, and FIG. 2 is a plan view illustrating a battery module according to a first embodiment.

1 and 2, a battery module (hereinafter, referred to as a “battery module”) 10 according to the present embodiment includes a first battery cell 100 and a second battery cell 200.

Although not shown, the first battery cell 100 and the second battery cell 200 may be provided with a cathode, an anode, a separator, an electrolyte, and the like inside the main body. The internal structure of such a battery cell is already well known in the art, so a detailed description thereof will be omitted.

The first battery cell 100 includes a first body 110. The first body 110 is composed of a rectangular enclosure. That is, the first body 110 includes first, second, third, and fourth surfaces 111, 112, 113, and 114 that form side surfaces, a fifth surface 115 that forms an upper surface, and an agent that forms a bottom surface. Six sides 116. The first rails 120 are provided on the first surface 111 and the second surface 112 adjacent to the first surface 111, respectively. First rail grooves 130 are formed in the third surface 113 neighboring the second surface 112 and the fourth surface 114 neighboring the third surface 113, respectively.

Since the shape and configuration of the second battery cell 200 are substantially the same as those of the first battery cell 100 described above, detailed descriptions thereof will be omitted. The second rail 220 is installed on the first surface 211 and the second surface 212 of the second battery cell 200, respectively, and the third surface 213 and the fourth surface of the second battery cell 200 are provided. Second rail grooves 230 are formed in the surface 214.

In the first battery cell 100 and the second battery cell 200, the first rail 120 slides along the second rail groove 230 or the second rail 220 is the first rail groove 130. Slide along and can be fastened together.

In this case, the first rail 120 to prevent the first battery cell 100 and the second battery cell 200 coupled to each other from being separated in the thickness direction of the first rail 120 and the thickness direction of the second rail 220. ) Has a cross section gradually expanding in the outward direction of the first body 110, the second rail 220 has a cross section gradually expanding in the outward direction of the second body (210). In addition, the first rail groove 130 has a cross section gradually expanding in the inner direction of the first body 110, the second rail groove 230 has a cross section gradually expanding in the inner direction of the second body (210). Have

In addition, cooling holes 121 and 221 which are open to the outside may be formed in each of the first rail 130 and the second rail 230. The cooling holes 121 and 221 form a flow path of a fluid (for example, refrigerant such as air and cooling gas) between the first battery cell 100 and the second battery cell 200 that are fastened to form the first battery cell. The 100 and the second battery cell 200 are cooled.

In the battery module 10, the first battery cell 100 and the second battery cell 200 are aligned at the alignment position, and the first battery cell 100 or the second battery cell 200 is aligned at the alignment position. It further includes an alignment unit 300 so as not to slide anymore.

3 is an enlarged view of an “I” portion shown in FIG. 2 and illustrates an alignment of the battery module according to the first embodiment.

Referring to FIG. 3, the alignment unit 300 of the battery module according to the first embodiment includes an alignment groove 310 and a stopper 330. The alignment groove 310 is formed in the first rail 120. The stopper 330 is installed in the second rail groove 230 in which the first rail 120 slides. The stopper 330 may include a ball 331 and an elastic body 332. Even if the first battery cell 100 and the second battery cell 200 are separated from each other, the ball 331 maintains rolling motion and the elastic body so that the ball 331 is not separated from the elastic body 332 from the elastic body 332. 332 may be installed to be constrained.

Thus, as the first rail 120 slides along the second rail groove 230, the alignment groove 310 is moved toward the stopper 330. At this time, the ball 331 is pressed by the first rail 120, the elastic body 332 is compressed by the pressing force of the first rail 120.

Subsequently, when the first rail 120 slides along the second rail groove 230 and the first battery cell 100 and the second battery cell 200 reach the alignment position, they are elastically supported by the elastic body 332. Ball 331 is inserted into the alignment groove 310. Therefore, the first battery cell 100 and the second battery cell 200 are no longer slid, and may be firmly fastened at the alignment position.

Subsequently, when the first battery cell 100 and the second battery cell 200 are separated, the ball 331 is aligned by the pressing force when the operator presses the first battery cell 100 or the second battery cell 200. The first battery cell 100 and the second battery cell 200 may be separated smoothly from the groove 310.

3 is an enlarged view of an “I” portion shown in FIG. 2 and illustrates an alignment of the battery module according to the second embodiment.

Referring to FIG. 3, the alignment unit 400 of the battery module according to the second embodiment includes an alignment groove 310 and a stopper 330. The alignment groove 410 is formed in the first rail 130. The stopper 430 is installed in the second rail groove 230 in which the first rail 120 slides. The stopper 430 may be a leaf spring. The stopper 430 includes a fixing part 431 which is installed in the second rail groove 230, and an elastic part 432 that is bent from the fixing part 431 toward the first rail 120, and includes an elastic part ( A convex portion 433 protruding toward the first rail 120 may be formed in the 432. The stopper 430 may include a lead 434 extending from the convex portion 433 and exposed to the outside of the first battery cell 100 and the second battery cell 200 fastened to the alignment position. Can be.

Thus, as the first rail 120 slides along the second rail groove 230, the alignment is moved toward the stopper 430. At this time, the elastic portion 432 and the convex portion 433 are pressed by the first rail 120, and is compressed toward the fixing portion 431 by the pressing force of the first rail 120.

Subsequently, when the first rail 120 slides along the second rail groove 230 and the first battery cell 100 and the second battery cell 200 reach the alignment position, the first rail 120 is elastically moved by the elastic part 432. The supported convex portion 433 is inserted into the alignment groove 410. Therefore, the first battery cell 100 and the second battery cell 200 are no longer slid, and may be firmly fastened at the alignment position.

Subsequently, when the first battery cell 100 and the second battery cell 200 are separated, the convex portion 433 is separated from the alignment groove 410 as the operator presses the lead 434 and the first battery cell. The 100 and the second battery cell 200 may be separated smoothly.

In the above description, although the alignment grooves 310 and 410 are formed in the first rail 120 and the stoppers 330 and 430 are formed in the second rail groove 230, the alignment grooves 310 and 410 are described. ) Is formed in any one of the first rail 120 and the second rail groove 230 and any one of the second rail 220 and the first rail groove 130, the stoppers (330, 430) It may be installed in the other one of the first rail 120 and the second rail groove 230 and the other of the second rail 220 and the first rail groove 130 is not formed 310.

As described above, the first battery cell 100 and the second battery cell 200 may be firmly held in the alignment position by the alignment unit 300.

As shown in FIG. 5, the remaining first rail 120 or the remaining first rail groove 130 of the first battery cell 100, the remaining second rail 220 of the second battery cell 200, or A battery cell having the same structure as the first battery cell 100 or the second battery cell 200 may be additionally fastened to at least one of the remaining second rail grooves 230.

Therefore, the battery cell and the battery module using the same according to the present invention are not limited to the number of battery cells, and can expand the battery cells and manufacture a slim battery module at low manufacturing cost.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

10: Battery module
100: first battery cell 110: first body
120: first rail 130: first rail groove
200: second battery cell 210: second body
220: second rail 230: second rail groove
300, 400: alignment unit 310, 410: alignment groove
330, 310: Stopper

Claims (11)

main body;
At least one rail mounted to the main body; and
And at least one rail groove formed on the other side of the main body in which the rail is not installed. The method of claim 1,
The rail has a cross section gradually expanding in the outward direction of the main body,
The rail groove has a cross section that gradually extends in the inner direction of the body. The battery cell according to claim 1, wherein the rail has a cooling hole which is opened to the outside. A first battery cell having at least one first rail installed on a first body and at least one first rail groove formed on another surface of the first body on which the first rail is not installed; and
And a second battery cell having at least one second rail provided on the second body and at least one second rail groove formed on another surface of the second body on which the second rail is not installed.
And the first rail slides along the second rail groove, or the second rail slides in the first rail groove so that the first battery cell and the second battery cell are coupled to each other. 5. The method of claim 4,
The first rail and the second rail has a cross section gradually extending in the outward direction of the first body and the second body,
The first rail groove and the second rail groove is a battery module, characterized in that it has a cross-section gradually extending in the inward direction of the first body and the second body. The battery module according to claim 4, wherein the first rail and the second rail have a cooling hole open to the outside. 5. The method of claim 4,
Between the first rail and the second rail groove and the second rail such that the slide driving of the first battery cell or the second battery cell is stopped at the alignment position of the first battery cell and the second battery cell. And an alignment unit installed between the first rail groove. The method of claim 7, wherein the alignment unit
An alignment groove formed in any one of the first rail and the second rail groove and any one of the second rail and the first rail groove; and
And a stopper installed on the other one of the first rail and the second rail groove and the other one of the second rail and the first rail groove, in which the alignment groove is not formed. The method of claim 8, wherein the stopper
A ball installed in the other one of the first rail and the second rail groove and the other one of the second rail and the first rail groove in which the alignment groove is not formed; and
The battery module further comprises; an elastic body for elastically supporting the ball. The method of claim 8, wherein the stopper
The plate is installed in the other one of the first rail and the second rail groove and the other of the first rail and the first rail groove is not formed, the convex portion is formed in a position corresponding to the alignment groove Battery module, characterized in that the spring. The method of claim 10, wherein the stopper
And a lead extending from the leaf spring and exposed to the outside of the first battery cell and the second battery cell fastened to the alignment position.

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