JP5338203B2 - Battery storage case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery housing case which is easy to disassemble. <P>SOLUTION: The battery housing case 1 for housing a battery pack 2 inside includes cutout parts 101, 102 for communicating an inside and outside of the battery housing case 1, and fragile parts 110, 111 formed with the cutout parts 101, 102 as starting points. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a battery storage case that stores a cell unit therein.

  As a battery storage case for storing a cell unit in which thin unit cells are stacked, a battery in which an opening end peripheral edge of a lower case that is open on one side and an end peripheral edge of an upper case that closes the opening surface of the lower case are wound together. A storage case is known (Patent Document 1).

JP 2006-92984 A

  However, in the prior art, the battery storage case has a configuration in which the opening edge periphery of the lower case and the edge periphery of the upper case are wound and joined together, so when it becomes necessary to disassemble the battery storage case, It was necessary to tear and disassemble the battery storage case with a can opener, and it took time to disassemble the battery storage case.

  The problem to be solved by the present invention is to provide a battery storage case that can be easily disassembled.

The battery storage case that stores the cell unit inside has a pair of notches that open to the top, side, and bottom of the battery storage case, and one notch as the starting point, and the other notch as the end point. The above-mentioned problem is solved by providing the weak part.

  According to the present invention, since the battery storage case that stores the cell unit is provided with the notch and the fragile portion starting from the notch, the battery storage case can be easily disassembled.

(First embodiment)
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings.

  FIG. 1 is a disassembled perspective view of the battery module of the first embodiment. The cell unit 2 is a laminated unit cell 21 which is a plurality of rectangular thin cells 21 in which a power generation element formed by laminating a positive electrode and a negative electrode plate and a separator in a battery exterior made of a laminate film. Are stacked in series, and are assembled into a rectangular parallelepiped shape that is flat as a whole. Further, a plus terminal 22 and a minus terminal 23 are provided at the short side end of the cell unit 2, and the plus terminal 22 and the minus terminal 23 are covered with terminal insulating resin covers 24 and 25. A connector 26 for measuring the voltage of each laminated unit cell 21 is provided between the plus terminal 22 and the minus terminal 23.

  The lower case 3 has a thin rectangular box shape, the first side wall 34 and the second side wall 35 on the short side, the third side wall 36 and the fourth side wall 37 on the long side, and the first to fourth side walls 34 to. And a main surface 32 on which the lower surface of the cell unit 2 is placed. The heights of the side walls 34 to 37 are set to be approximately the same as the height of the cell unit 2. The lower case 3 is manufactured by pressing a metal plate in which notches corresponding to the first to fourth main body side recesses 91 to 94 shown in FIG. 1 are formed.

  The upper case 5 has a thin plate shape, and the end 7 of the upper case 5 is formed into a rounded rectangular shape following the open end 6 of the lower case 3. The upper case 5 is manufactured by pressing a metal plate in which notches corresponding to the pair of recesses 95 and 96 provided on the short side of the upper case 5 shown in FIG. 1 are formed.

  A concave portion 91 is provided in a rectangular shape at the center position of the first side wall 34 of the lower case 3. The recess 91 extends beyond the lower end corner of the first side wall 34 into the main surface 32 of the lower case by a predetermined length. Further, the upper case 5 is provided with a recess 95 at a position corresponding to the recess 91 of the lower case 3. The recess 95 has a rectangular shape with the same width as the recess 91 of the lower case 3, and extends a predetermined length from the end 7 of the upper case 5 in a direction orthogonal to the first side wall 34. When the lower case 3 and the upper case 5 are combined to form a battery storage case, the concave portion 91 provided in the lower case 3 and the concave portion 95 provided in the upper case are combined, so that the inside and the outside of the battery storage case are combined. One notch hole that communicates with each other is formed.

  A concave portion 92 is provided in a rectangular shape at the center position of the second side wall 35 of the lower case 3. The recess 92 extends into the main surface 32 of the lower case 3 by a predetermined length beyond the lower end corner of the second side wall 35. The upper case 5 is provided with a recess 96 at a position corresponding to the recess 92 of the lower case 3. The recess 96 has a rectangular shape with the same width as the recess 92 of the lower case 3, and extends a predetermined length from the end 7 of the upper case 5 in a direction orthogonal to the second side wall 35. When the battery case is formed by combining the lower case 3 and the upper case 5, the concave portion 92 provided in the lower case 3 and the concave portion 96 provided in the upper case 5 are combined to form an interior of the battery storage case. One notch hole that communicates with the outside is formed.

  On the left and right sides of the center position of the second side wall 35 of the lower case 3, concave portions 93 and 94 are further U-shaped following the shapes of the terminal insulating resin covers 24 and 25 covering the plus terminal 22 and the minus terminal 23 of the cell unit 2. It is provided in a letter shape. When the battery case is formed by combining the lower case 3 and the upper case 5, the recesses 93 and 94 provided in the lower case 3 are combined with the upper case 5 so that the inside and the outside of the battery case are communicated. Notch holes to be formed will be formed respectively.

  FIG. 2 is a perspective view of the battery module according to the first embodiment. 2, the battery storage case 1 of FIG. 1 is shown upside down. The main surface (first main surface) 32 on the lower case 3 side is the upper surface, and the main surface (second main surface) on the upper case 5 side. 33 is located on the bottom surface. FIG. 3 is a perspective view of the battery module when FIG. 2 is viewed from the opening direction of the first cutout hole 101. FIG. 4 is a cross-sectional view of the battery module taken along line IV-IV in FIG. In FIG. 4, the cell unit 2 housed in the battery housing case 1 is omitted.

  As shown in FIG. 2, the battery module includes a battery storage case 1 and a cell unit 2 stored in the battery storage case 1. The battery storage case 1 is formed by winding a peripheral edge 6 of an opening end of a lower case 3 that stores a cell unit 2 and an end peripheral edge 7 of an upper case 5 that closes an opening 4 of the lower case 3. Formed by bonding. Therefore, as shown in FIG. 4, a tightening portion 8 is formed at a joint portion between the opening edge periphery 6 of the lower case 3 and the edge periphery 7 of the upper case 5.

  As shown in FIG. 2, the battery storage case 1 has a first cutout hole 101 on the first side wall 34 and second to fourth cutout holes 102 to 104 on the second side wall 35. Further, the battery storage case 1 has a first fragile portion 110 and a second fragile portion 111 on the first main surface 32.

  As shown in FIGS. 2 and 3, the first notch hole 101 is a hole that communicates the inside and the outside of the battery storage case 1, and is provided at the center position of the first side wall 34 of the lower case 3 shown in FIG. The recessed portion 91 formed and the recessed portion 95 provided in the upper case 5 are formed together. For example, the first cutout hole 101 is a hole used for positioning the lower case 3 and the upper case 5 of the battery storage case 1 when the battery storage case 1 is assembled. In addition, after the battery storage case 1 is assembled, the first cutout hole 101 ensures air permeability. Or it opens in order to measure the state of the cell unit 2 accommodated in the battery storage case 1 by inserting various sensors such as a temperature sensor from the first cutout hole 101. When the sensor is inserted, the sensor inserted in the first cutout hole 101 is removed from the first cutout hole 101 before the battery housing case 1 is disassembled, so that the first cutout hole is disassembled. 101 can be opened. The first notch hole 101 is a starting point for the first and second weakened portions 110 and 111 as will be described later.

  The second cutout hole 102 is a hole that communicates the inside and the outside of the battery storage case 1, and is provided in the recess 92 and the upper case 5 provided at the center position of the second side wall 35 of the lower case 3 shown in FIG. 1. The recessed portion 96 is formed together. A connector 26 for measuring the voltage of each laminated unit cell 21 constituting the cell unit 2 is inserted into the second cutout hole 102.

  The third cutout hole 103 is a hole that communicates the inside and the outside of the battery storage case 1 and is formed by combining the recess 93 provided in the second side wall 35 of the lower case 3 shown in FIG. 1 and the upper case 5. Is done. Similarly, the fourth cutout hole 104 is a hole that communicates the inside and the outside of the battery storage case 1, and the recess 94 provided in the second side wall 35 of the lower case 3 shown in FIG. 1 and the upper case 5. Together. A plus terminal 22 is inserted into the third cutout hole 103, and a minus terminal 23 is inserted into the fourth cutout hole 104.

In 1st Embodiment, as shown in FIGS. 2-4, the 1st weak part 110 and the 2nd weak part 111 are formed in the 1st main surface 32 of the battery storage case 1. As shown in FIG. The first fragile portion 110 is formed by providing a pair of grooves 112 and 113 on the first main surface 32. The groove 112 is provided along the peripheral edge of the first main surface 32 on the fourth side wall 37 side, and the groove 113 is on the inner side of the groove 112 and along the peripheral edge of the first main surface 32 on the fourth side wall 37 side. Provided. One end of the first fragile portion 110 is formed continuously from the first notch hole 101, and the other end is formed continuously from the second notch hole 102.
The second fragile portion 111 is formed by providing a pair of grooves 114 and 115 in the first main surface 32. The groove 114 is provided along the peripheral edge of the first main surface 32 on the third side wall 36 side, and the groove 115 is on the inner side of the groove 114 and along the peripheral edge of the first main surface 32 on the third side wall 36 side. Provided. Similarly to the first fragile portion 110, one end of the second fragile portion 111 is formed continuously from the first cutout hole 101, and the other end is formed continuously from the second cutout hole 102.

  As shown in FIG. 4, the first fragile portion 110 and the second fragile portion 111 are formed on the outer surface of the battery storage case 1 among the surfaces of the assembled battery storage case 1. The inner surface of the battery storage case 1 is covered with an insulating layer. If the first to fourth grooves 112 to 115 are provided on the inner surface of the battery storage case 1, cells stored in the battery storage case 1 are provided. There may be a problem in the insulation of the unit 2. Therefore, the first fragile portion 110 and the second fragile portion 111 are provided on the outer surface of the battery storage case 1.

  The grooves 112 to 115 for forming the first and second fragile portions 110 and 111 are formed when the lower case 3 is manufactured by press working. Specifically, the lower case 3 is formed by using a die having a convex portion corresponding to each of the grooves 112 to 115 as a mold used when the lower case 3 is pressed.

  As shown in FIG. 4, the grooves 112 to 115 are formed thinner than the other battery housing case 1. Therefore, by inserting a tool in the starting point of the 1st weak part 110 or the 2nd weak part 111, and applying force in a weak part formation direction using a tool, each groove | channel 112-115 fractures | ruptures, from battery storage case 1 The 1st weak part 110 or the 2nd weak part 111 can be removed.

  The first cutout hole 101 is open when the battery storage case 1 is disassembled. Therefore, when the battery storage case 1 is disassembled, a simple tool or the like can be inserted from the opening portion of the first notch hole 101 into the starting point of the fragile portion 110 or the second fragile portion 111. 110 or the second fragile portion 111 can be removed.

  Further, in the battery storage case 1 of the present embodiment, the first and second fragile portions 110 and 111 are provided on the first main surface 32 along the peripheral edge of the first main surface 32. By removing the portion 110 and the second fragile portion 111, the opening of the battery storage case 1 can be made larger. Thereby, the cell unit 2 accommodated in the battery storage case 1 can be easily taken out.

  Furthermore, in addition to the first notch hole 101 as a starting point, the first and second weakened portions 110 and 111 have the second notch hole 102 as an end point on the first main surface 32 of the battery storage case 1. It is provided along the peripheral edge of the first main surface 32. Since the first fragile portion 110 and the second fragile portion 111 have such a configuration, by removing the first fragile portion 110 and the second fragile portion 111, all the peripheral portions of the first main surface 32 are removed, The battery storage case 1 can be divided into two parts, the first main surface 32 and the other parts, and the cell unit 2 stored in the battery storage case 1 can be taken out more easily.

  Since the battery storage case 1 is configured as described above, the battery storage case 1 can be disassembled using a simple tool or the like starting from the first notch hole 101, and there is no need for special tools or skill such as can openers. The cell unit 2 housed inside can be easily taken out. Moreover, since the battery storage case 1 can be easily disassembled, the time required for disassembly can be shortened.

  In addition, the cell unit 2 in this embodiment is corresponded to the assembled battery of this invention. Moreover, the 1st, 2nd notch holes 101 and 102 in this embodiment correspond to the notch part of this invention.

(Second Embodiment)
Next, a battery storage case 1a according to a second embodiment of the present invention will be described. FIG. 5 is a perspective view of the battery module according to the second embodiment. As shown in FIG. 5, in 2nd Embodiment, the 1st hook part 121 is the 1st notch hole 101 side of the 2nd weak part 111a in the edge part by the side of the 1st notch hole 101a of the 1st weak part 110a. The second embodiment is the same as the first embodiment except that the second hooking portion 122 is provided at the end portion.

  The first and second hooks 121 and 122 are hook holes for hooking tools, for example. Specifically, the first hooking portion is an end portion of the first fragile portion 110a on the first notch hole 101 side, and is large enough to hook a tool between the grooves 112a and 113a. A hole is provided. Similarly, the second hooking portion is the end of the second fragile portion 111a on the first notch hole 101 side, and is large enough to hook a tool between the grooves 114a and 115a. A hole is provided.

  When the battery storage case 1a is disassembled, first, a tool is inserted into the first hook 121, and the tool is hooked on the first hook 121. Then, by applying a force in the fragile portion forming direction of the first fragile portion 110a with the first notch hole 101 as a starting point, the pair of grooves 111a and 112a forming the first fragile portion 110a breaks, and the first fragile portion 110a can be removed. Similarly, the 2nd weak part 111a can also be removed. Thereby, since all the peripheral parts of the 1st main surface 32 are removed, the battery storage case 1a can be divided into the 1st main surface 32 and the other part.

  As described above, by providing the first and second hooks 121 and 122 in the first and second weak parts 110a and 111a, respectively, the tool can be hooked to the starting point of each of the weak parts 110a and 111a. The battery storage case 1a can be easily disassembled. For example, according to the second embodiment, the disassembly time of the battery storage case 1a, which conventionally takes about 3 minutes, can be shortened to about 10 seconds.

  The shapes of the first and second hooks 121 and 122 are not particularly limited. For example, the first notch hole 101 side ends of the first and second fragile portions 110a and 111a are separated from the first main surface 32. It is good also as a protruding convex part. In this case, since a space in which the tool can be inserted is formed inside the first and second hooks 121 and 122, the first and second weakened portions 110a and 111a can be easily inserted by inserting the tool into the space. Can be removed.

(Third embodiment)
A battery storage case 1b according to a third embodiment of the present invention will be described. FIG. 6 is a perspective view of the battery module according to the third embodiment. FIG. 7 is a cross-sectional view of the battery module taken along line VII-VII in FIG. In FIG. 7, the cell unit 2 housed inside is omitted. As shown in FIGS. 6 and 7, in the third embodiment, the first fragile portion 110 b starts from the first notch hole 101 and the side surface of the battery storage case 1 b on the fourth side wall 37 side along the circumferential direction. The second fragile portion 111b is the first except that the side surface of the battery storage case 1b on the third side wall 36 side is provided along the circumferential direction starting from the first cutout hole 101. This is the same as the embodiment.

  As shown in FIGS. 6 and 7, the first fragile portion 110b is formed by providing a pair of grooves 112b and 113b on the side surface of the battery storage case 1b on the fourth side wall 37 side. The second fragile portion 111b is formed by providing a pair of grooves 114b and 115b on the side surface of the battery storage case 1b on the third side wall 36 side. As shown in FIG. 7, the grooves 112b to 115b that form the first and second weakened portions 110b and 111b are formed thinner than the other battery housing case 1b. The grooves 112b to 115b are also formed when the lower case 3b is manufactured by press work, as in the first embodiment.

  When disassembling the battery storage case 1b, first, a tool is inserted into the first notch hole 101, and the tool is inserted into the starting point of the first fragile portion 110b. Then, by applying a force in the fragile portion forming direction, the pair of grooves 112b and 113b forming the first fragile portion 110b can be broken and the first fragile portion 110b can be removed. Similarly, the 2nd weak part 111b can also be removed.

  As described above, the first and second fragile portions 110b and 111b are provided along the circumferential direction on the side surface of the battery storage case 1b so that the first and second fragile portions 110b and 111b are disassembled when the battery storage case 1b is disassembled. By removing, the opening of the battery storage case 1b can be made large, so that the cell unit 2 stored in the battery storage case 1b can be easily taken out.

(Fourth embodiment)
A battery storage case 1c according to a fourth embodiment of the present invention will be described. FIG. 8 is a perspective view of the battery module according to the fourth embodiment. As shown in FIG. 8, in 4th Embodiment, the 1st hook part 121c is provided in the edge part by the side of the 1st notch hole 101 of the 1st weak part 110c, and the 1st cut part of the 2nd weak part 111c is provided. The second embodiment is the same as the third embodiment except that the second hooking portion 122c is provided at the end portion on the notch hole 101 side.

  These first and second hooks 121c and 122c are hook holes for hooking tools, for example, like the first and second hooks 121 and 122 in the second embodiment.

  At the time of disassembling the battery storage case 1c, a tool is inserted into the first hook portion 121c, and the tool is hooked into a hole that is the first hook portion 121c. Then, by applying a force in the fragile portion forming direction starting from the first notch hole 101, the pair of grooves 112c and 113c forming the first fragile portion 110c can be broken and the first fragile portion 110c can be removed. . Similarly, the 2nd weak part 111c can be removed.

  As described above, by providing the first and second hooks 121c and 122c in the first and second weak parts 110c and 111c, respectively, the tool can be hooked to the starting point of each of the weak parts 110c and 111c. The battery storage case 1c can be easily disassembled.

  The embodiment described above is described for facilitating understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

For example, in the above-described embodiment, the example in which the first and second fragile portions are provided on the first main surface and the side surface of the battery storage case is illustrated, but may be provided on the second main surface of the battery storage case. Also in this case, if each weak part is removed, the opening part of a battery storage case can be taken large, and the cell unit stored inside can be taken out easily.
Moreover, the cross-sectional shape of each groove | channel which forms the 1st, 2nd weak part is not specifically limited, For example, it is good also as a groove | channel, such as a triangle shape and a U-shape. Furthermore, the number of grooves in which the first and second fragile portions are formed is not limited to two.

It is a disassembled perspective view of the battery module of the first embodiment. It is an inclination figure of the battery module in a 1st embodiment. 4 is a perspective view of the battery module as viewed from the opening direction of the first cutout hole 101. FIG. It is sectional drawing of the battery module along the IV-IV line of FIG. It is a perspective view of the battery module in 2nd Embodiment. It is a perspective view of the battery module in 3rd Embodiment. It is sectional drawing of the battery module along the VII-VII line of FIG. It is a perspective view of the battery module in 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1a, 1b, 1c ... Battery storage case 2 ... Cell unit 3 ... Lower case 6 ... Opening edge part periphery 5 ... Upper case 7 ... End part periphery 101 ... 1st notch hole 102 ... 2nd notch hole 110,110a , 110b, 110c... First fragile portion 112, 112a, 112b, 112c... Groove 113, 113a, 113b, 113c... Groove 111, 111a, 111b, 111c ... second fragile portion 114, 114a, 114b, 114c. 115a, 115b, 115c ... groove 121, 121c ... first hook 122, 122c ... second hook

Claims (6)

A battery storage case for storing the assembled battery inside,
Said to communication between the inside and the outside of the battery storage case, the upper surface of the battery storage case, the side surface, a pair of notches which open over the bottom surface,
A fragile portion provided along the peripheral edge of the upper surface or bottom surface of the battery storage case ,
The pair of notches are provided at opposite positions of the battery storage case,
The fragile portion is formed from one of the pair of cutout portions as a starting point and the other cutout portion as an end point .   The battery storage case according to claim 1, wherein the fragile portion is formed on an outer surface of the battery storage case. 3. The fragile portion is formed by providing a groove-like thin portion on the surface of the battery storage case along the peripheral portion of the upper surface or the peripheral portion of the bottom surface. Battery storage case. The fragile portion is a battery storage case according to claim 1, characterized in that it comprises a hook portion as a starting point. The battery storage case has a lower case whose one surface is open and an upper case that closes the opening surface of the lower case, and is joined by winding and tightening a peripheral portion of the lower case and a peripheral portion of the upper case. The battery storage case according to any one of claims 1 to 4 . The notch includes a battery storage case according to any one of claims 1 to 5, characterized in that a hole for working or condition detection assembly.

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