KR102488433B1 - Rechargeable battery holder - Google Patents

Abstract

The present invention relates to a secondary battery holder, and according to the present invention, in a secondary battery holder coupled to the upper and lower ends of a plurality of secondary battery cells having electrode terminals of different polarities formed at both ends, respectively, in a rectangular plate shape a holder body to be formed; an insertion hole formed in the holder body in an even number and arranged at regular intervals into which an upper end or a lower end of the secondary battery cell may be inserted; At the end of the holder body, a plurality of secondary battery holders are connected in series or in parallel, including connection grooves formed between the insertion holes and connection pins that can be inserted into the connection grooves. It is possible to provide a secondary battery holder characterized in that.

Description

Secondary battery holder {Rechargeable battery holder}

The present invention relates to a secondary battery holder, and more particularly, to a secondary battery holder capable of variously connecting secondary battery cells in series or parallel through connection pins, and which is easy to assemble and disassemble during use.

A rechargeable battery is a battery that can be charged and discharged, unlike a primary battery that cannot be charged. Low-capacity secondary batteries are used in small portable electronic devices such as mobile phones, notebook computers, and camcorders, and large-capacity batteries are widely used as power sources for driving motors in hybrid vehicles.

In addition, one large-capacity battery module is usually composed of a plurality of secondary batteries connected in series, and the secondary batteries may be formed in a cylindrical shape or a prismatic shape.

A bus bar electrically connecting each of the secondary batteries is installed in the battery module. The busbar is joined to the terminals of the secondary batteries by welding, and the welding is performed while the busbars are aligned on the secondary batteries.

However, a separate tool such as a jig is used to align the busbar in an accurate position, but this operation is time-consuming and the process is complicated. In addition, even if a jig is used, it is difficult to align the busbar in an accurate position.

In addition, when an external shock or vibration is transmitted to the battery module, problems such as poor electrical contact between the busbar and the terminal or a short circuit occur. If the contact between the busbar and the terminal is poor, resistance increases, resulting in a decrease in output, as well as generation of heat, which causes deterioration in performance and shortened lifespan of the secondary battery.

In addition, in the case of existing holders used for battery modules to fix a plurality of secondary batteries, a long length of a stick is inserted in the middle, or a structure is applied to connect several battery modules in a slide coupling format, so the battery module can be used. There is a disadvantage that it is not easy to assemble and disassemble during operation.

As a prior art, Korean Patent Publication No. 10-2016-0123851 (battery module having a holder) has been disclosed.

In order to solve the above problems, an object of the present invention is to provide a secondary battery holder capable of variously connecting secondary battery cells in series or parallel through connection pins, and which is easy to assemble and disassemble during use.

In order to solve the above problems, the secondary battery holder according to the first embodiment of the present invention is a secondary battery coupled to the upper and lower ends of a plurality of secondary battery cells having electrode terminals of different polarities formed at both ends, respectively. A holder comprising: a holder body formed in a rectangular plate shape; an insertion hole formed in the holder body in an even number and arranged at regular intervals into which an upper end or a lower end of the secondary battery cell may be inserted; At the end of the holder body, a plurality of secondary battery holders are connected in series or in parallel, including connection grooves formed between the insertion holes and connection pins that can be inserted into the connection grooves. It is possible to provide a secondary battery holder characterized in that.

Here, the insertion holes are characterized in that they are formed in an n x 2 arrangement in the holder body. (where n is greater than or equal to 2)

In addition, the connection groove is formed in a circular flat cross section, the outer surface is opened and the first connection groove formed to penetrate from one surface to the other surface of the holder body and the outer surface is opened and has a predetermined depth from the upper side of the first connection groove. It may include a second connection groove formed to have.

In addition, the connecting pin has a connecting pin body formed in a cylindrical shape at both ends and can be inserted into the first connecting groove, and a connecting pin fixture formed on an upper end of the connecting pin body and inserted into the second connecting groove to be mounted. can include

In addition, it may further include a nut hole formed at the center between the radially positioned insertion holes to connect busbars through nuts.

In addition, the holder body may further include a spaced portion formed to protrude from each corner.

In addition, the spacer part of the secondary battery holder according to the second embodiment of the present invention can move up and down along the spaced protrusion guide groove formed at each corner of the holder body and the spaced protrusion guide groove, and is moved upward. It may include spaced protrusions that can protrude to be fixed.

In addition, the spaced protrusion guide groove may include a spaced protrusion moving groove into which the spaced protrusion is inserted so as to move in a vertical direction; A separation prevention groove formed on an inner surface of the separation projection moving groove in a vertical direction and a fixing groove formed on an upper side of an inner surface of the separation projection moving groove, wherein the separation projection is inserted into the separation prevention groove and can move in a vertical direction. spin; It is formed to protrude from the inside of the lower end and may include a fixing protrusion that can be inserted into the fixing groove as it moves upward, and a holding protrusion that is formed to protrude from the outside of the upper end.

In addition, the spaced part of the secondary battery holder according to the third embodiment of the present invention includes a protrusion installation groove formed at each corner of the holder body; It is inserted into the protrusion installation groove, protrudes from the holder body, and includes a fixing member formed to protrude outward from the lower end, and is installed on both sides of the protrusion installation groove from the outer circumferential surface of the holder body and the spacer member to fix the fixing member It may include a member fixing part.

In addition, the member fixing part is formed to have a length in the left and right directions, and is inserted into the slide groove opened toward the projection installation groove and the slide groove to move along the longitudinal direction, and as it moves toward the projection installation groove, the projection It may include a slide fixing member for preventing separation by fixing the fixing member of the spacer member inserted into the installation groove.

The secondary battery holder according to the embodiment of the present invention as described above is formed in a rectangular plate shape and has a structure connected through a connection pin, so that secondary battery cells can be connected in various ways in series or parallel, and during use Assembly and disassembly can be easy.

In addition, it is possible to prevent a short circuit or a short circuit phenomenon that may occur in contact with other objects during use through the separation part.

In addition, convenience can be improved because the bus bar can be connected through a nut without a separate configuration.

1 (a) and (b) are exemplary views illustrating a battery module using a secondary battery holder according to a first embodiment of the present invention.
2 (a) and (b) are perspective views illustrating a secondary battery holder according to a first embodiment of the present invention.
3 is a plan view showing the secondary battery holder of FIG. 1 (a);
4 is a side view illustrating the secondary battery holder of FIG. 1 (a);
5 (a) and (b) are perspective and side views illustrating connection pins of the secondary battery holder according to the first embodiment of the present invention.
6 (a) and (b) are exemplary diagrams showing a state in which secondary battery cells are connected in series or parallel by coupling secondary battery holders through connection pins.
7 is an exemplary view showing a state in which busbars are connected through nuts when using a secondary battery holder according to the first embodiment of the present invention.
8 is a perspective view showing a secondary battery holder according to a second embodiment of the present invention;
FIG. 9 is a partially cut away perspective view of FIG. 8 by separating the spaced protrusions and cutting A-A';
10 (a) and (b) are projection plan views showing an enlarged separation portion of FIG. 8;
11 (a) to (c) are exemplary diagrams illustrating the operation of the separation unit of FIG. 8;
12 is a perspective view showing a secondary battery holder according to a third embodiment of the present invention;
Fig. 13 is a perspective view showing the separating member of Fig. 12;

Hereinafter, the description of the present invention with reference to the drawings is not limited to specific embodiments, and various transformations may be applied and various embodiments may be applied. In addition, the content described below should be understood to include all conversions, equivalents, or substitutes included in the spirit and scope of the present invention.

In the following description, terms such as first and second are terms used to describe various components, and are not limited in meaning per se, and are used only for the purpose of distinguishing one component from another.

Like reference numbers used throughout this specification indicate like elements.

Singular expressions used in the present invention include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "include", "include" or "have" described below are intended to designate that features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist. should be construed, and understood not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 13 attached.

1 (a) and (b) are exemplary views showing a battery module using a secondary battery holder according to a first embodiment of the present invention, and FIG. It is a perspective view showing a secondary battery holder according to an embodiment, FIG. 3 is a plan view showing the secondary battery holder of FIG. 1 (a), and FIG. 4 is a secondary battery holder of FIG. 1 (a) 5 (a) and (b) are a perspective view and a side view showing the connection pin of the secondary battery holder according to the first embodiment of the present invention, and FIG. 6 (a) and (b) is an exemplary diagram showing a state in which secondary battery cells are connected in series or parallel by coupling secondary battery holders through connection pins, and FIG. 7 is a nut when using a secondary battery holder according to the first embodiment of the present invention. It is an example diagram showing the connection of the bus bar through.

As shown in FIG. 1, the secondary battery holder 1 according to the first embodiment of the present invention is used to modularize a plurality of secondary battery cells 2, and a plurality of secondary battery cells 2 ) may be coupled to the top and bottom of each to form one battery module.

At this time, when coupled to the upper and lower ends, the secondary battery holder 1 is preferably coupled symmetrically with respect to the secondary battery cell 2, but is not limited thereto.

The secondary battery cell 2 is a lithium secondary battery, and electrode terminals (anode and cathode) having different polarities may be formed at both ends, and may be formed in a cylindrical shape, but is not limited thereto.

In addition, the secondary battery cells 2 may be connected in parallel by connecting like poles, or may be connected in series by connecting different poles.

2 to 4, the secondary battery holder 1 according to the first embodiment of the present invention includes a holder body 10, an insertion hole 11, a battery fixing plate 12, a connection groove 13, It may include a connecting pin 14, a nut hole 15, and a spaced portion 16. Here, the secondary battery holder 1 can be coupled to the top or bottom of the secondary battery cell 2, so it can be used regardless of top and bottom, but for convenience of explanation, it will be described based on the appearance shown in FIG. 2 do.

The holder body 10 may be formed in a rectangular plate shape having a predetermined thickness for coupling between the secondary battery holders 1, but is not limited thereto.

In addition, the horizontal and vertical width of the holder body 10 may be determined according to the arrangement of the insertion holes 11, which is formed to have only an area large enough to form a plurality of insertion holes 11 spaced apart from each other at a predetermined interval. Because.

Accordingly, when the holder body 10 is composed of four insertion holes 11 and is formed in a 2 x 2 array, the horizontal and vertical widths are the same, so that the direction when the secondary battery holders 1 are coupled to each other is changed. It can be combined in various ways without considering it.

In addition, even when the secondary battery holders 1 having different horizontal widths, that is, different numbers of insertion holes 11, are coupled together, the vertical widths are the same, so they can be easily coupled, and are formed in a rectangular plate shape. Because of this, coupling may be possible even on the side of the horizontal plane having a different width.

An even number of insertion holes 11 are arranged at regular intervals in the holder body 10 so that the upper or lower ends of the secondary battery cells 2 can be inserted.

More specifically, the insertion holes 11 may be formed in an n x 2 array in the holder body 10, where n may be 2 or more.

At this time, it is more preferable to consist of a 2 x 2 arrangement or a 3 x 2 arrangement, that is, 4 and 6 insertion holes 11, but is not limited thereto.

In the case of a secondary battery holder (four-hole secondary battery holder) consisting of four insertion holes 11, the secondary battery cells 2 can be connected in a structure of 1S4P, 2S2P, and 4S1P, and six insertion holes 11 In the case of a secondary battery holder (6-hole secondary battery holder) made of ), the secondary battery cells 2 can be connected in a structure of 1S6P, 2S3P, 3S2P, or 6S1P.

Combining a 4-hole secondary battery holder and a 6-hole secondary battery holder enables all desired series and parallel connections, and furthermore, it can be applied to large capacity by connecting and using multiple secondary battery holders (1). can make it

The battery fixing plate 12 prevents the secondary battery cell 2 inserted into the insertion hole 11 from protruding through the secondary battery holder 1, and the insertion hole ( 11) may be formed to protrude toward the side.

Also, the battery fixing plate 12 may be formed on one or more of one side and the other side of the connection groove 13 .

At this time, it is preferable that one or more battery fixing plates 12 are formed to protrude through one insertion hole 11 .

Connection grooves 13 are into which connection pins 14 for connection between secondary battery holders 1 can be inserted, and are formed between the insertion holes 11 and insertion holes 11 at the end of the holder body 10. It can be.

Specifically, the connection groove 13 may include a first connection groove 130 and a second connection groove 131 .

The first connection groove 130 may have a circular flat cross section, an open outer surface, and may be formed to penetrate from one surface to the other surface of the holder body 10, that is, from the upper surface to the lower surface. It is possible to prevent the inserted connecting pin 14 from falling outward by being formed in a groove shape with a circular flat cross section.

The second connection groove 131 has an open outer surface and may be formed to have a predetermined depth above the first connection groove 130 . It can be formed in the shape of a groove dug to a predetermined depth on the upper surface of the holder body 10 . At this time, the second connecting groove 131 is formed wider than the first connecting groove 130 so that the connecting pin fixing body 141 of the inserted connecting pin 14 is caught above the first connecting groove 130. It is possible to prevent the connection pin 14 from falling downward.

When viewed from a plane, the second connection groove 131 may have a curved inner end and gradually widen toward the outer end, but is not limited thereto.

Referring to FIG. 5, the connecting pins 14 can be inserted into the connecting grooves 13, and one connecting pin 14 is inserted into the connecting grooves 13 of the two secondary battery holders 1, respectively. Accordingly, the two secondary battery holders 1 can be connected.

This connection pin 14 may include a connection pin body 140 and a connection pin fixing body 141.

The connecting pin body 140 is formed in a cylindrical shape at both ends and formed in a form in which two cylindrical shapes are connected, and can be inserted into the first connecting groove 130 . However, it is not limited thereto and may be variously changed according to the shape of the first connection groove 130 .

The connecting pin fixing body 141 is formed on the top of the connecting pin body 140 to prevent the connecting pin 14 from falling out of the connecting groove 13, and as it is inserted into the second connecting groove 131, the holder body 10 It is possible to prevent the connection pin 14 from falling out by hanging on the lower side.

As shown in FIG. 6 through the connection pins 14, the secondary battery holders 1 can be connected in series or parallel, and can be more easily connected in various forms.

In addition, by coupling the secondary battery holders 1 to each other through the connection pins 14 configured as described above, the secondary battery holders 1 can be easily assembled or separated while the battery module is in use.

These connecting pins 14 can be easily inserted into or removed from the connecting grooves 13 using tools such as tweezers.

The nut hole 15 is formed at every center between the insertion holes 11 located radially in the holder body 10, so that the bus bar 3 can be connected through the nut 4.

The spaced portion 16 may be formed to protrude from each corner of the holder body 10, but is not limited thereto. The spacer 16 can prevent the secondary battery cell 2 or the busbar 3 from coming into contact with other objects during use, thereby preventing a short circuit or short circuit caused by contact.

The spaced portion 16 may be separated according to use.

8 is a perspective view showing a secondary battery holder according to a second embodiment of the present invention, and FIG. 9 is an exploded perspective view of FIG. (a) and (b) of FIG. 8 are projected plan views showing an enlarged separation portion, and FIGS. 11 (a) to (c) are exemplary diagrams illustrating the operation of the separation portion of FIG. 8 .

8 to 10 , in the secondary battery holder 1 according to the second embodiment of the present invention, the spacer 16 may be formed in a different shape. Here, the spaced portion 16 may be formed to protrude or be retracted by moving in the vertical direction according to necessity.

Here, except for the spacer 16, the secondary battery holder 1 according to the second embodiment of the present invention is substantially the same as the secondary battery holder 1 according to the first embodiment described above. can

Therefore, only the spaced portion 16 will be described.

The spaced portion 16 may include a spaced protrusion guide groove 160 and a spaced protrusion 161 .

The spacing protrusion guide groove 160 may be formed at each corner of the holder body 10 so that the spacing protrusion 161 is inserted and movable along the vertical direction. In addition, it is formed to be able to fix the spaced protrusion 161 that is moved upward and protrudes.

To this end, the spaced protrusion guide groove 160 may include a spaced protrusion moving groove 1600, an anti-separation groove 1601, and a fixing groove 1602.

The spaced protrusion moving groove 1600 may be formed at each corner of the upper surface of the holder body 10 so that the spaced protrusion 161 can be inserted and moved in the vertical direction. It is formed to have a length from the top surface to the bottom direction, and the top surface is open so that the separation protrusion 161 can move in the vertical direction, and the outer surface can be opened, but is not limited thereto.

The separation prevention groove 1601 is formed to have a length in the vertical direction on the inner surface of the spaced protrusion moving groove 1600, and may extend vertically from the top to the inside. Accordingly, the separation prevention protrusion 1610 of the separation protrusion 161 is inserted so that it can move in the vertical direction, and as the separation protrusion 161 moves inward, it can move together.

The fixing groove 1602 is formed on the inner surface of the spaced protrusion movable groove 1600, and the fixing protrusion 1611 of the spaced protrusion 161 can be inserted. Accordingly, the position may be fixed in a state in which the separation protrusion 161 protrudes.

The spacing protrusion 161 can move in the vertical direction along the spacing protrusion guide groove 160, and can protrude from the holder body 10 as being moved upward and fixed.

The spacing protrusion 161 may be formed in a bar shape having a length, and may include a separation prevention protrusion 1610, a fixing protrusion 1611, and a locking protrusion 1612.

The separation prevention protrusion 1610 is formed symmetrically on both sides of the separation protrusion 161 and is inserted into the separation prevention groove 1601 to move vertically.

The fixing protrusion 1611 is formed to protrude from the lower end of the spaced protrusion 161 and can be inserted into the fixing groove 1602 as the spaced protrusion 161 moves upward and inward. Accordingly, the position of the separation protrusion 161 may be fixed.

The holding protrusion 1612 may be formed to protrude outside the top of the spacer protrusion 161 . Accordingly, when the user wants to withdraw the spaced protrusion 161, the user can more easily withdraw the spaced protrusion 161 by using a tool such as tweezers or the like.

As shown in FIG. 11, the spaced portion 16 formed as described above moves the protruding spaced protrusion 161 to the outside of the holder body 10 to separate the fixing protrusion 1611 from the fixing groove 1602. Accordingly, the separation protrusion 161 may be moved downward to be drawn into the separation protrusion guide groove 160 .

12 is a perspective view showing a secondary battery holder according to a third embodiment of the present invention, and FIG. 13 is a perspective view showing the separation member of FIG.

Referring to FIGS. 11 and 12 , in the secondary battery holder 1 according to the third embodiment of the present invention, the spacer 16 may be formed in another shape. Here, the spacer 16 may be formed in a detachable structure according to necessity.

Here, except for the spacer 16, the secondary battery holder 1 according to the third embodiment of the present invention is substantially the same as the secondary battery holder 1 according to the first embodiment described above. can

Therefore, only the spaced portion 16 will be described.

The spacer 16 may include a protrusion installation groove 162 , a spacer 163 and a member fixing part 164 .

The protrusion installation groove 162 is formed at each corner of the upper surface of the holder body 10, and the spacer member 163 can be inserted therein. At this time, the protrusion installation groove 162 may be formed such that an outer surface besides the upper surface is opened.

The spacer member 163 may be formed in a bar shape having a length so as to be inserted into the protrusion installation groove 162 and protrude from the holder body 10, and a fixing member to be fixed to the holder body 10 ( 1630) may be included.

The fixing member 1630 may be symmetrically formed on the outside of the lower end of the spacer 163 with respect to the center. At this time, the two fixing members 1630 are preferably formed to form a right angle to each other, but is not limited thereto.

The member fixing part 164 is installed on both sides of the protrusion installation groove 162 on the outer circumferential surface of the holder body 10 to fix the inserted fixing member 1630 .

The member fixing part 164 has a sliding structure and may include a slide groove 1640 and a slide fixing member 1641 .

The slide groove 1640 is formed to have a length in the left and right directions in the holder body 10, and may be formed to open toward the protrusion installation groove 162. Accordingly, the slide fixing member 1641 may protrude into the projection installation groove 162 by moving along the slide groove 1640 .

In addition, the slide groove 1640 is formed to be longer than the slide fixing member 1641, so that the slide fixing member 1641 can be moved more easily using a tool such as tweezers.

The slide fixing member 1641 is inserted into the slide groove 1640 and can move along the longitudinal direction, and as it moves toward the protrusion installation groove 162, the fixing member of the spacer member 163 inserted into the projection installation groove 162 1630 can be fixed to prevent separation.

In addition, the slide fixing member 1641 may include a slide protrusion symmetrically in the vertical direction so as not to be separated from the holder body 10 .

As described above, the secondary battery holder according to the embodiment of the present invention is formed in a rectangular plate shape and has a structure connected through a connection pin, so that secondary battery cells can be connected in series or parallel in various ways, , can be easily assembled and disassembled during use.

In addition, it is possible to prevent a short circuit or a short circuit phenomenon that may occur in contact with other objects during use through the separation part.

In addition, convenience can be improved because the bus bar can be connected through a nut without a separate configuration.

In the above, the secondary battery holder according to the embodiment of the present invention has been described by dividing it into the first to third embodiments, but this is divided into embodiments for convenience of explanation and easy understanding, and is limited to each embodiment It is not, and the configurations of the embodiments can be applied to each other by design change.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art can implement them in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Therefore, the embodiments described above are illustrative in all respects and are not restrictive.

1: secondary battery holder
10: holder body
11: insertion hole
12: battery fixing plate
13: connection groove
130: first connection groove
131: second connection groove
14: connection pin
140: connecting pin body
141: connecting pin fixture
15: nut hole
16: separation part
160: spaced protrusion guide groove
1600: spaced projection moving groove
1601: departure prevention home
1602: fixed groove
161: spaced protrusion
1610: departure prevention protrusion
1611: fixed protrusion
1612: stumbling block
162: projection installation groove
163: separation member
1630: fixing member
164: member fixing part
1640: slide home
1641: slide fixing member
2: secondary battery cell
3: Busbar
4: nut

Claims (10)

In the secondary battery holder coupled to the upper and lower ends of a plurality of secondary battery cells having electrode terminals of different polarities formed at both ends, respectively,
Holder body formed in the shape of a square plate;
an insertion hole formed in the holder body in an even number and arranged at regular intervals into which an upper end or a lower end of the secondary battery cell may be inserted;
Connecting grooves formed between the insertion holes and insertion holes at the end of the holder body, and
Including a connection pin that can be inserted into the connection groove,
A plurality of secondary battery holders can be connected in series or parallel through the connection pins,
Further comprising a spaced portion formed to protrude from each corner of the holder body,
The separation part,
Spaced protrusion guide grooves formed at each corner of the holder body, and
A secondary battery holder comprising a spacer protrusion capable of moving in a vertical direction along the spacer protrusion guide groove and protruding as being moved upward and fixed.
According to claim 1,
The insertion hole is
A secondary battery holder, characterized in that formed in an nx 2 array on the holder body.
(where n is greater than or equal to 2)
According to claim 1,
The connecting groove,
A first connection groove having a circular cross-section and having an open outer surface and penetrating from one surface of the holder body to the other surface; and
A secondary battery holder comprising a second connection groove having an open outer surface and formed above the first connection groove to have a predetermined depth.
According to claim 3,
The connecting pin is
A connecting pin body having both ends formed in a cylindrical shape to be inserted into the first connecting groove; and
A secondary battery holder comprising a connecting pin fixing body formed on an upper end of the connecting pin body and inserted into the second connecting groove to be mounted.
According to claim 2,
A secondary battery holder further comprising a nut hole formed at a center between the radially positioned insertion holes to connect busbars through a nut.
delete delete According to claim 1,
The spacing protrusion guide groove,
a spaced protrusion moving groove into which the spaced protrusion is inserted so as to move in a vertical direction;
The separation prevention groove formed in the vertical direction on the inner surface of the separation protrusion moving groove, and
A fixing groove formed on an upper surface of the spaced protrusion moving groove,
The spaced protrusion,
a departure prevention protrusion that is inserted into the departure prevention groove and can move in a vertical direction;
A fixing protrusion that is formed to protrude from the inside of the lower end and can be inserted into the fixing groove as it moves upward, and
A secondary battery holder including a holding protrusion formed to protrude from an outer side of an upper end.
In the secondary battery holder coupled to the upper and lower ends of a plurality of secondary battery cells having electrode terminals of different polarities formed at both ends, respectively,
Holder body formed in the shape of a square plate;
an insertion hole formed in the holder body in an even number and arranged at regular intervals into which an upper end or a lower end of the secondary battery cell may be inserted;
Connecting grooves formed between the insertion holes and insertion holes at the end of the holder body, and
Including a connection pin that can be inserted into the connection groove,
A plurality of secondary battery holders can be connected in series or parallel through the connection pins,
Further comprising a spaced portion formed to protrude from each corner of the holder body,
The separation part,
Protrusion installation grooves formed at each corner of the holder body;
It is inserted into the protrusion installation groove and protrudes from the holder body, and includes a fixing member formed to protrude outward from the lower end, and a spacer member and
A secondary battery holder comprising a member fixing portion installed on both sides of the protrusion installation groove on an outer circumferential surface of the holder body to fix the fixing member.
According to claim 9,
The member fixing part,
A slide groove formed to have a length in the left and right directions and opened toward the protrusion installation groove, and
A secondary slide fixing member including a slide fixing member inserted into the slide groove to move along the longitudinal direction and preventing separation by fixing the fixing member of the spacer member inserted into the protrusion installation groove as it moves toward the protrusion installation groove. battery holder.

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