KR101795718B1 - Extendible Battery Cell Module Assembly - Google Patents

Abstract

The present invention relates to an expandable battery cell module assembly, in which a plurality of unit cell modules can be successively brought into contact with or detached from a connection electrode formed in a long direction in one direction, thereby expanding or reducing the total available power capacity And a voltage measurement terminal capable of measuring a voltage of a battery cell provided in each of the plurality of unit cell modules, wherein the voltage measurement terminals are connected to each other in a plurality of unit cell modules, The voltage can be measured on a package basis with respect to a set of battery cells corresponding to each other located at a specific position of the cell module so that the cell balancing operation is smoothly performed on a battery cell set basis at a specific position even if a plurality of unit cell modules are coupled Extensible to stabilize overall performance Type battery cell module assembly.

Description

[0001] The present invention relates to an extensible battery cell module assembly,

The present invention relates to an expandable battery cell module assembly. More specifically, the unit cell modules can be conveniently connected to or disconnected from the connection electrodes formed in a long direction in one direction, thereby easily changing the total available power capacity by expanding or contracting. And a voltage measuring terminal for measuring a voltage of a battery cell provided in each of the plurality of unit cell modules, wherein the voltage measuring terminals are connected to each other through a plurality of unit cell modules, The cell balancing operation can be smoothly performed in units of battery cells in a specific position even if a plurality of unit cell modules are coupled, and the whole performance can be stabilized To an expandable battery cell module assembly .

Generally, a large-capacity battery (battery module) capable of generating a large amount of electric power for driving an energy storage system (ESS), an electric vehicle, a hybrid vehicle and an electric motorcycle (E-Scooter) Can be used.

In particular, interest in energy storage systems (ESS), which can maximize the efficiency of energy storage and quality, and energy use as core of smart grid, is increasing with the spread of renewable energy . The energy storage system (ESS) may include a large-capacity battery cell module having a plurality of battery cells, and may include a power system (not shown) to supply remaining power (remaining energy) which is a technology that can optimize the quality and efficiency of electric power.

The battery cell module used as such an energy storage device is configured by connecting a plurality of battery cells in series and has recently been used in a wide variety of applications such as electric bicycles, electric scooters, outdoor LED lights, mobile phone charging, It is used as a power supply for household appliances.

As a battery included in a battery cell module as an energy storage device, a lithium battery is mainly used. A lithium battery includes a lithium ion battery using a liquid electrolyte and a lithium polymer battery using a solid polymer. The battery module includes a lithium ion battery Are connected in series and used as a module.

Since the capacity of the battery cell module is generally determined in a predetermined form, the user must determine the capacity of the battery cell module in advance by grasping the power capacity according to the use purpose, do.

When the capacity of the battery cell module is manufactured in a predetermined form, it is very inefficient in terms of energy efficiency and various types of battery cell modules must be manufactured if the required power capacity changes or is used for other purposes The production work and the management work also become complicated.

Korean Patent Publication No. 10-2014-0084619

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior arts, and it is an object of the present invention to provide a method and a system for connecting / disconnecting a plurality of unit cell modules to a connection electrode formed in a long direction in one direction, It is possible to easily change the entire power capacity by expanding or reducing the capacity of the battery cell module, and it is not necessary to separately manufacture a separate battery cell module according to the type of capacity, And to provide an expandable battery cell module assembly that can be conveniently and quickly manufactured.

It is another object of the present invention to provide a voltage measuring terminal capable of measuring a voltage of a battery cell provided in each of a plurality of unit cell modules, It is possible to measure the voltage in units of a package with respect to a set of battery cells corresponding to each other and to smoothly perform cell balancing operation in units of a battery cell set at a specific position even when a plurality of unit cell modules are combined And a battery cell module assembly.

It is a further object of the present invention to provide a module module in which a voltage measurement terminal of a unit cell module and a voltage measurement terminal of a main board always stably come into intimate contact with each other, The present invention also provides an expandable battery cell module assembly capable of stably maintaining the integrity of the voltage measurement terminal while maintaining a stable stable state of cell balancing operation while stably maintaining the overall performance even when the number of modules is changed will be.

According to the present invention, there is provided a portable terminal comprising: a main case having a receiving space formed therein; A main board disposed in an inner space of the main case; A plurality of unit cell modules having a plurality of battery cells connected in series and having positive and negative terminals respectively connected to the plurality of battery cells at one side; And a plurality of unit cell modules detachably coupled to the main board through a cathode terminal and a cathode terminal, the cathode terminal and the cathode terminal of the unit cell module being detachably contactable with each other, A voltage measuring cell terminal capable of measuring a voltage of each of the plurality of battery cells is formed in the unit cell module, and a voltage measuring cell terminal connected to the voltage measuring cell terminal is connected to the main board, And a measurement board terminal is formed in the battery cell module assembly.

At this time, the anode connecting electrode and the cathode connecting electrode are elongated in one direction, one end in the longitudinal direction is coupled to the main board, and the plurality of unit cell modules are aligned in the longitudinal direction of the anode connecting electrode and the cathode connecting electrode. And can be detachably coupled to the anode connection electrode and the cathode connection electrode, respectively.

The unit cell module includes an upper support block and a lower support block disposed at upper and lower ends of the battery cell such that the battery cells are fixedly supported, And the upper and lower support blocks may have a connection terminal for connecting the battery cells such that a plurality of the battery cells are serially connected in series from the positive terminal to the negative terminal, .

The voltage measurement cell terminal may be formed on the upper support block and the lower support block in a form extending from the connection terminal.

The unit cell modules adjacent to each other are detachably contact-coupled with the side surfaces of the upper support block and the lower support block so as to be in contact with each other. In a state where the plurality of unit cell modules are in contact with each other, Cell terminals may be formed to be electrically connected to each other.

In addition, a first contact portion, through which the voltage measurement cell terminal is exposed, is formed on a first side of the upper support block and the lower support block so that voltage measurement cell terminals of adjacent unit cell modules can be electrically connected to each other, And a second contact portion for exposing the voltage measurement cell terminal is formed on a second side opposite to the side face of the unit cell module. The first contact portion and the second contact portion are mutually corresponding to each other so that adjacent unit cell modules are contact- / RTI >

One of the first contact portion and the second contact portion may be formed in a flat plate shape and the other may be formed in an elastic piece shape so as to be in elastic contact with each other.

The voltage measurement board terminal may be formed as a flat plate or an elastic piece so as to be elastically contacted with the first contact portion or the second contact portion of the voltage measurement cell terminal formed in the unit cell module closest to the main board.

In addition, the unit cell module is coupled to the anode connection electrode and the cathode connection electrode, and is mounted on the main board together with the anode connection electrode and the cathode connection electrode. The voltage measurement cell terminal and the voltage measurement board terminal may be formed to correspond to each other so that the voltage measurement board terminal of the board can be electrically contacted.

In addition, in the process of mounting the anode connection electrode and the cathode connection electrode to which the plurality of unit cell modules are coupled to the main board, the voltage measurement cell terminal of the unit cell module closest to the main board and the voltage measurement cell terminal of the main board And a module guide portion for guiding a mounting position of the unit cell module so that the board terminal can be contacted.

In addition, at least one of the upper support block and the lower support block of the unit cell module has a coupling groove formed on one side thereof and a coupling protrusion formed on the other side thereof at a position corresponding to the coupling groove so as to be inserted into the coupling groove As the coupling grooves and the coupling protrusions are inserted and coupled, mutually adjacent unit cell modules can be detachably coupled in a state of being in contact with each other.

According to the present invention, a plurality of unit cell modules can be successively and conveniently connected or disconnected to a connection electrode formed in a long direction in one direction, thereby easily changing the total available power capacity by expanding or contracting It is possible to manufacture battery cell modules of various capacities more conveniently and quickly by expanding or changing the same unit cell module without separately preparing separate battery cell modules according to the types of capacities.

The voltage measuring terminal may be connected to each of the plurality of unit cell modules to measure the voltage of the battery cell provided in each of the plurality of unit cell modules. And the voltage can be measured on a package-by-package basis with respect to a set of battery cells corresponding to each other. Thus, even when a plurality of unit cell modules are combined, the cell balancing operation can be smoothly performed in units of battery cells have.

In addition, by installing a separate module guide unit and guiding the mounting position of the unit cell module, the voltage measurement terminal of the unit cell module and the voltage measurement terminal of the main board always come into stable contact with each other stably and in particular, It is possible to keep the contact state of the voltage measuring terminal in a stable and stable state, so that the cell balancing operation can be performed stably and the overall performance can be stably maintained.

FIG. 1 is a perspective view schematically showing a shape of an expandable battery cell module assembly according to an embodiment of the present invention. FIG.
FIG. 2 and FIG. 3 illustrate a combined state of a unit cell module of an expandable battery cell module assembly according to an embodiment of the present invention; FIG.
FIG. 4 is a perspective view schematically showing a configuration of a unit cell module of an expandable battery cell module assembly according to an embodiment of the present invention. FIG.
FIG. 5 is an exploded perspective view schematically showing a detailed configuration of a unit cell module of an expandable battery cell module assembly according to an embodiment of the present invention. FIG.
FIG. 6 is a cross-sectional view taken along the lines "AA" and "BB" of FIG. 4 to explain the internal structure of the unit cell module of the expandable battery cell module assembly according to an embodiment of the present invention;
FIG. 7 is a perspective view schematically showing a coupling relationship of an expandable battery cell module assembly according to an embodiment of the present invention to a unit cell module; FIG.
FIG. 8 is a cross-sectional view schematically showing a coupling structure for a unit cell module of an expandable battery cell module assembly according to an embodiment of the present invention. FIG.
FIGS. 9 and 10 are views illustrating an exemplary structure of a unit cell module and a main board of an expandable battery cell module assembly according to an embodiment of the present invention. Referring to FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a perspective view schematically showing a shape of an expandable battery cell module assembly according to an embodiment of the present invention, and FIGS. 2 and 3 are views showing a unit cell module of an expandable battery cell module assembly according to an embodiment of the present invention. FIG. 4 is a perspective view schematically showing a structure of a unit cell module of an expandable battery cell module assembly according to an embodiment of the present invention, and FIG. FIG. 6 is an exploded perspective view schematically illustrating a detailed configuration of a unit cell module of an exemplary embodiment of an expandable battery cell module assembly according to an exemplary embodiment of the present invention. FIG. 6 is an exploded perspective view illustrating an internal structure of a unit cell module of an expandable battery cell module assembly according to an exemplary embodiment of the present invention. 4 is a cross-sectional view taken along line "AA" and line "BB"

The expandable battery cell module assembly according to an embodiment of the present invention is an apparatus that can expand and change a plurality of battery cell modules easily and includes a main case 500, a main board 600, a plurality of unit cell modules 100 And an anode connection electrode 200 and a cathode connection electrode 300. [

The main case 500 may have a box shape in which a receiving space is formed therein, and may be manufactured in various forms. The main case 500 may be divided into a main body 510 having one or more open sides and a main cover 520 connected to the main body 510 to close the open side of the main body 510. A separate base plate 510 may be mounted on the bottom surface of the main body 510 and a module guide unit 700 to be described later may be provided on the base plate 510.

The main board 600 is disposed in the inner space of the main case 500 and the anode connection electrode 200 and the anode connection electrode 300, to which the plurality of unit cell modules 100 are coupled, do. The main board 600 can operate and control the unit cell module 100 through various chips and pattern circuits.

The unit cell module 100 includes a plurality of battery cells 101 connected in series and a positive terminal 110 and a negative terminal 120 to be connected to a plurality of battery cells 101 connected in series at one side .

The positive electrode connection electrode 200 and the negative electrode connection electrode 300 are mounted on the main board 600 and the positive electrode terminal 110 and the negative electrode terminal 120 of the unit cell module 100 can be removably contacted with each other . That is, the positive electrode terminal 110 of the unit cell module 100 is in contact with the positive electrode connection electrode 200 and the negative electrode terminal 120 of the unit cell module 100 is in contact with the negative electrode connection electrode 300.

At this time, the anode connection electrode 200 and the cathode connection electrode 300 are elongated in one direction parallel to each other, and the plurality of unit cell modules 100 are connected to one anode connection electrode 200 and the cathode connection electrode 300 All connected in parallel at the same time. In this case, the plurality of unit cell modules 100 are arranged in a row along the longitudinal direction of the anode connection electrode 200 and the cathode connection electrode 300 as shown in FIGS. 1 to 3, And is detachably contact-coupled to the anode connecting electrode 200 and the cathode connecting electrode 300 in such a manner that the anode connecting electrode 200 is coupled to the cathode connecting electrode 300 and the cathode terminal 120 is coupled to the cathode connecting electrode 300.

As shown in FIG. 2, the plurality of unit cell modules 100 may include a plurality of unit cell modules 100 arranged in a row on one side of the positive electrode connection electrode 200 and the negative electrode connection electrode 300, 3, a plurality of anode connection electrodes 200 and a plurality of cathode connection electrodes 300 are arranged on both sides of the anode connection electrode 200 and the anode connection electrode 300, (200) and the cathode connection electrode (300).

A voltage measurement cell terminal 160 capable of measuring the voltage of each of the plurality of battery cells 101 is formed in the unit cell module 100 and a voltage measurement cell terminal 160 is connected to the voltage measurement cell terminal 160 in the main board 600. [ And a voltage measurement board terminal 610 is formed on the voltage measurement board terminal 610. The voltage measurement board terminal 610 is connected to the voltage measurement board terminal 610. The voltage measurement board terminal 610 is connected to the battery cell 101, Will be described later.

According to this structure, the expandable battery cell module assembly according to an embodiment of the present invention is configured such that a plurality of unit cell modules 100 are sequentially and conveniently contacted with a positive electrode connection electrode 200 and a negative electrode connection electrode 300, It is possible to expand and change the total power capacity, and it is not necessary to manufacture separate battery cell module assemblies according to the types of capacities, and the same unit cell module 100 can be extended and changed, The assembly can be manufactured more conveniently and quickly. In addition, the unit cell module 100 can measure the voltage in units of packages for the battery cells 101 corresponding to each other, thereby easily performing the cell balancing operation for the plurality of battery cells 101. [

Next, each sub-configuration is discussed in more detail.

The unit cell module 100 includes a plurality of battery cells 101 connected in series and the plurality of battery cells 101 are fixedly supported by the upper and lower support blocks 130 and 140.

The upper support block 130 is disposed at the upper end of the battery cell 101 and the lower support block 140 is disposed at the lower end of the battery cell 101. The upper support block 130 and the lower support block 140 A plurality of through holes (H) are formed for inserting and fixing a plurality of battery cells (101).

The positive terminal 110 and the negative terminal 120 connected to the plurality of battery cells 101 are respectively protruded from one end of the upper support block 130 and the lower support block 140, respectively. A plurality of battery cells 101 are connected to the battery cell 101 such that the battery cells 101 are connected in series from the positive terminal 110 to the negative terminal 120 in the upper support block 130 and the lower support block 140, A terminal 150 is formed. In this case, as shown in FIGS. 5 and 6, the plurality of battery cells 101 may be alternately arranged such that the (+) pole and the (-) pole are arranged in different directions.

A separate protective cover 160 may be mounted on the upper portion of the upper support block 130 to be externally closed. A protective cover (not shown) is attached to the lower portion of the lower support block 140, Can be closed.

As shown in FIGS. 5 and 6, a plurality of battery cells 101 are arranged in the vertical direction of the positive and negative poles 101, And the connection terminals 150 are formed to connect two adjacent battery cells 101 in the upper support block 130 and the lower support block 140, respectively.

For example, the battery cells B1 and B2 are connected in series through a connection terminal 150 of the lower support block 140, B2 and B3 are connected in series through a connection terminal 150 of the upper support block 130, B3 and B4 are connected in series through the connection terminal 150 of the lower support block 140 and the two battery cells 101 which are repeatedly adjacent to each other are continuously connected to the upper support block 130 and the lower support block 140 , All the battery cells 101 from B1 to B13 are connected in series.

At this time, the (+) pole of the battery cell B1 located at the beginning of the series connection type is connected to the positive terminal 110 by the connection terminal 150 formed in the upper support block 130, and the battery cell B13 Is connected to the negative electrode terminal 120 by the connection terminal 150 formed in the lower support block 140. [ In this way, all the battery cells 101 are connected in series from the positive terminal 110 to the negative terminal 120.

2 and 3, the anode connection electrode 200 and the cathode connection electrode 300 are formed in a flat plate shape and are elongated in one direction. The anode connection electrode 200 and the cathode connection electrode 300 are arranged in parallel and spaced apart from each other, Is fixedly supported through the block (400). The other end of the anode connection electrode 200 and the cathode connection electrode 300 is attached to the main board 600 disposed in the inner space of the main case 500 and is electrically connected to an external device.

A plurality of unit cell modules 100 are coupled to one of the anode connection electrodes 200 and the cathode connection electrodes 300. The anode connection terminals 200 are connected to the anode terminals 110 of the unit cell modules 100, And the negative electrode terminal 120 of each unit cell module 100 is contact-coupled with the negative electrode connection electrode 300. Accordingly, the plurality of unit cell modules 100 are connected to one anode connection electrode 200 and the cathode connection electrode 300, and are connected in parallel.

The positive electrode terminal 110 and the negative electrode terminal 120 of the unit cell module 100 are inserted into the positive electrode connection electrode 200 and the negative electrode connection electrode 300 in a direction perpendicular to the longitudinal direction, do. 4 to 6, the two terminal plates T1 and T2 are spaced apart from each other, and each of the connection electrodes 200 and 300 May be configured to be in insertion contact. At this time, as shown in the enlarged view of FIG. 6, the two terminal plates T1 and T2 may be configured such that their ends are in contact with each other by an elastic force, The positive electrode terminal 110 and the negative electrode terminal 120 can be brought into elastic contact with the connection electrodes 200 and 300.

The unit cell module 100 described above is disposed in series along the longitudinal direction of the anode connection electrode 200 and the cathode connection electrode 300 to connect the anode connection electrode 200 and the anode connection electrode 300 with the anode The upper and lower support blocks 130 and 140 are coupled to each other through the terminal 110 and the cathode terminal 120. At this time, It can possibly be contact-coupled. The contact-coupling structure of the unit cell module 100 may be a contact-coupling structure that is detachable through the coupling groove 131 and the coupling protrusion 132, which will be described later in detail.

2, a plurality of unit cell modules 100 may be coupled in a row in a row on one side of the anode connection electrode 200 and the cathode connection electrode 300, As shown in FIG. 3, a plurality of pairs may be coupled in a row.

In this case, the positive electrode terminal 110 and the negative electrode terminal 120 formed in each unit cell module 100 are preferably arranged to be shifted from each other along the vertical direction as shown in FIGS. 2 and 3, Even if the unit cell module 100 is symmetrically coupled with respect to the anode connecting electrode 200 and the cathode connecting electrode 300, the unit cell module 100 can be smoothly coupled without interference between the left and right unit cell modules 100, It can be used more conveniently because there is no need to manufacture and manage it separately.

When a plurality of battery cells 101 are connected in series and used as a single module, the battery cells 101 may be damaged due to chemical differences, physical property differences, A voltage difference may be generated. The life of the module may be shortened due to the voltage difference between the battery cells 101. Particularly, due to the performance degradation such as the voltage drop of one battery cell 101, the entire packaged module may have to be replaced. Therefore, a separate cell balancing process may be required to detect and manage the voltage difference for the plurality of battery cells 101.

According to an embodiment of the present invention, voltage measurement can be performed on each battery cell 101 so that the cell balancing process can be performed even when a plurality of unit cell modules 100 equipped with a plurality of battery cells 101 are connected. .

For example, in the unit cell module 100, a voltage measurement cell terminal 160 capable of measuring the voltage of each of a plurality of battery cells 101 is formed. May extend from the connection terminal 150 formed in the upper support block 130 and the lower support block 140 of the unit cell module 100 as shown in FIG. The connection terminal 150 may be connected to a voltage measurement board terminal 610 formed on the main board 600 to perform a cell balancing process. The cell balancing control process can be performed in various ways through a cell balancing control method for a general battery module, and thus a detailed description thereof will be omitted.

For example, as shown in FIG. 6, for the battery cell B1, the voltage of the battery cell B1 is measured by using the voltage measurement cell terminal 160 according to an embodiment of the present invention. The voltage measurement cell terminal P1 extending from the connection terminal 150 of the upper support block 130 connected to the (+) pole of the lower support block 140 and the connection terminal 150 of the lower support block 140 connected to the (- The voltage of the battery cell B1 can be measured using the extended voltage measurement cell terminal P2. The voltage measurement cell terminal P2 extending from the connection terminal 150 of the lower support block 140 connected to the (+) pole of the B2 and the upper support block 130 connected to the (- The voltage of the battery cell B2 can be measured using the voltage measurement cell terminal P3 extending from the connection terminal 150. [ In the same way, the voltage of all the battery cells from B1 to B13 can be measured repeatedly.

The plurality of voltage measurement cell terminals 160 are formed in the unit cell modules 100 such that a plurality of the voltage cell cell terminals 100 can measure the voltage of the plurality of battery cells 101. In this case, 2 and 3, the plurality of voltage measurement cell terminals 160 formed in each unit cell module 100 are connected to each other in the direction of the unit cell module 100 adjacent to each other, And the voltage measurement cell terminal 160 are electrically connected to each other.

When the plurality of unit cell modules 100 are electrically connected to each other so that the voltage measurement cell terminals 160 of the unit cell modules 100 are electrically connected to each other, The voltage to the battery cell 101 at a specific position with respect to the whole can be measured in a package unit.

For example, when the unit cell modules 100 are connected in five contacts, since the voltage measurement cell terminals P1 and P2 are connected to the battery cell B1 of each unit cell module 100, the five unit cell modules 100 Can measure the voltage in a package unit including all five battery cells B1 connected to each other by the voltage measurement cell terminal.

In this way, since the voltage can be measured in units of five packages from five battery cells to all the battery cells B1 to B13, that is, the voltage with respect to the battery cell 101 at each specific position can be measured in a package unit. It is possible to easily perform the cell balancing control process for the expanded form in which the plurality of unit cell modules 100 are combined.

The voltage measurement cell terminal 160 formed on the unit cell module 100 and the voltage measurement board terminal 610 formed on the main board 600 are not connected to each other through separate connecting parts, It is preferable that the connection terminals 200 and 300 are formed at positions corresponding to each other so that the terminals 160 and 610 are in contact with each other in the process of mounting the connection electrodes 200 and 300 on the main board 600.

That is, when the unit cell module 100 is coupled to the anode connection electrode 200 and the cathode connection electrode 300 and mounted on the main board 600 together with the anode connection electrode 200 and the cathode connection electrode 300 The voltage measurement cell terminal 160 and the voltage measurement board terminal 610 are electrically connected to each other so that the voltage measurement cell terminal 160 formed on the unit cell module 100 and the voltage measurement board terminal 610 of the main board 600 are electrically contacted with each other. The unit cell module 100 and the connection electrodes 200 and 300 may be mounted on the main board 600 without a separate connection part. The terminal 160 and the voltage measurement board terminal 610 can be connected to each other, so that the assembly operation can be performed more conveniently.

FIG. 7 is a perspective view schematically illustrating a coupling relation of the expandable battery cell module assembly according to an embodiment of the present invention to a unit cell module, FIG. 8 is a perspective view illustrating a unit of the expandable battery cell module assembly according to an embodiment of the present invention, FIGS. 9 and 10 are views schematically illustrating a coupling structure of a unit cell module and a main board of an expandable battery cell module assembly according to an embodiment of the present invention. FIG. to be.

As described above, the plurality of unit cell modules 100 are arranged in series along the longitudinal direction of the anode connection electrode 200 and the cathode connection electrode 300, The unit cell modules 100 are detachably contacted with each other so that the unit cell modules 100 are separated from each other in such a manner that the side surfaces of the upper support block 130 and the lower support block 140 are in contact with each other, .

For this purpose, at least one of the upper support block 130 and the lower support block 140 of the unit cell module 100 has a coupling groove 131 formed at one side thereof and a coupling groove 131 is formed at the other side thereof, The coupling protrusions 132 are formed at positions corresponding to the coupling grooves 131 and the unit cell modules adjacent to each other can be detachably coupled to each other by the coupling recesses 131 and the coupling protrusions 132. [

7, a coupling groove 131 is formed on a first side S1 of the upper support block 130 and a coupling groove 131 is formed on a second side S2 of the upper support block 130. [ A coupling protrusion 132 which can be inserted into the coupling protrusion 131 can be formed. The first side S1 of the upper support block 130 of one unit cell module 100 and the second side S2 of the upper support block 130 of the neighboring unit cell module 100 are connected to each other, The engaging grooves 131 and the engaging projections 132 formed on the first side surface S1 and the second side surface S2 of the upper support block 130 are inserted and engaged with each other, The neighboring unit cell modules 100 are detachably contacted with each other.

In this case, as shown in FIGS. 7 and 8, both the coupling groove 131 and the coupling protrusion 132 may be formed on the first side S1 of the upper support block 130, and correspondingly, The coupling protrusion 132 and the coupling groove 131 may be formed at corresponding positions on the side surface S2.

An engaging groove extension part 131a extending in a direction perpendicular to the depth direction of the engaging groove 131 is formed in the bottom surface of the engaging groove 131. A coupling groove extension part 131a is formed at the end of the engaging projection 132, The unit protrusions 132a may be extended to correspond to the coupling groove extensions 131a so as to be inserted into the protrusions 131a of the unit cell modules 100. When mutually opposing faces of mutually adjacent unit cell modules 100 are in contact with each other The coupling groove extension portion 131a and the coupling projection extending portion 132a may be inserted and coupled as the slide is moved.

In this case, when the upper support blocks 130 of the unit cell modules 100 adjacent to each other are brought into contact with each other in the direction in which the contact surfaces contact each other, as shown in FIG. 8 (a) The engaging protrusions 132a are inserted into the engaging groove extension portions 131a, and the engaging protrusions 132a are inserted into the engaging groove extension portions 131a. As shown in Fig. 8 (b) . By forming the coupling groove extension portion 131a and the coupling projection extension portion 132a in a direction perpendicular to the direction in which mutual contact surfaces of the upper support block 130 or the lower support block 140 are in contact with each other, The detachment of the unit cell module 100 can be more completely prevented, and the coupling force can be further enhanced.

As described above, when the unit cell modules 100 are brought into contact with each other in such a manner that mutual contact surfaces of the upper support block 130 and the lower support block 140 are in contact with each other, The voltage measurement cell terminals 160 formed on the upper support block 130 and the lower support block 140 are formed to be electrically connected to each other adjacent to each other as described above.

A first contact portion 161 for exposing the voltage measurement cell terminal 160 is formed on the first side surface S1 of the upper support block 130 and the lower support block 140 and a second contact portion 161 for exposing the voltage measurement cell terminal 160 is formed on the second side surface S2. The first contact portion 161 and the second contact portion 162 are formed in such a manner that the unit cell modules 100 adjacent to each other are in contact with and connected to each other To be mutually corresponding to each other.

At this time, any one of the first contact portion 161 and the second contact portion 162 may be formed in a flat plate shape, and the other one may be formed in an elastic piece shape so as to be elastically contacted with each other. 7 and 8, the first contact portion 161 formed on the first side surface S1 is formed in the shape of an elastic piece, the second contact portion 162 formed on the second side surface S2, The first contact portion 161 and the second contact portion 162 are brought into elastic contact with each other in the process of contacting the adjacent unit cell modules 100 to each other, The first contact portion 161 and the second contact portion 162 are maintained in good contact with each other according to the elastic contact structure even if the spaces between the unit cell modules 100 are generated. Therefore, the function of the voltage measurement cell terminal 160 for the battery cell 101 as described above can be stably performed.

As described above, the voltage measurement cell terminal 160 formed on the unit cell module 100 and the voltage measurement board terminal 610 formed on the main board 600 are not connected to each other through separate connecting parts, Both terminals 160 and 610 are formed in contact with each other in the process of mounting the connection terminal 100 and the connection electrodes 200 and 300 on the main board 600.

A plurality of unit cell modules 100 are coupled to the anode connection electrode 200 and the cathode connection electrode 300 and the anode connection electrode 200 and the cathode connection electrode 300 are connected to the main board 100. [ The voltage measurement cell terminal 160 of the unit cell module 100 closest to the main board 600 contacts the voltage measurement board terminal 610 of the main board 600 so that the voltage measurement cell terminal 160 of the unit cell module 100, The voltage measuring board terminal 610 and the voltage measuring board terminal 610 are formed to have positions and shapes corresponding to each other. At this time, no gap is generated between the voltage measuring cell terminal 160 and the voltage measuring board terminal 610, A module guide unit 700 for guiding a mounting position of the unit cell module 100 may be formed.

The module guide unit 700 may be formed simply as a bar protruding upward from the upper surface of the base plate 511 of the main case 500 as shown in FIGS. The mounting position of the unit cell module 100 is guided by the module guide unit 700 so that the voltage measurement cell terminal 160 of the unit cell module 100 is connected to the voltage measurement board terminal 610 of the main board 600 Can be brought into close contact with each other.

At this time, the voltage measurement cell terminal 160 and the voltage measurement board terminal 610 may be formed in the shape of an elastic piece so as to be brought into elastic contact with each other by an elastic force. For example, when the shape of the voltage measurement cell terminal 160 facing the main board 600 side is a flat type as shown in an enlarged view (a) of FIG. 9, the voltage measurement board terminal 610 may be formed in the shape of an elastic piece and when the shape of the voltage measurement cell terminal 160 facing the main board 600 side is formed into an elastic piece shape as shown in an enlarged view of FIG. The voltage measurement board terminal 610 of the main board 600 may be formed in a flat plate shape.

9, the expandable battery cell module assembly according to an embodiment of the present invention may include a unit cell module 100, The module guide portion 700 may be formed to be movable in a straight line toward the main board 600. In addition,

For example, as shown in FIG. 10, the module guide unit 700 may be configured to pass through a separate lead screw 710 having threads formed on the outer circumferential surface thereof and to be threadedly engaged therewith. According to this structure, The main body 700 can be linearly moved toward or away from the main board 600 in accordance with the rotation direction of the lead screw 710.

When the number of the unit cell modules 100 coupled to the connection electrodes 200 and 300 is changed by allowing the position of the module guide unit 700 to move linearly toward the main board 600, The position of the unit cell module 100 can be precisely guided by appropriately adjusting the position of the unit cell module 100 so that the voltage measuring cell terminal 160 and the voltage The contact state of the measurement board terminal 610 can be stably maintained.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: unit cell module 101: battery cell
110: positive electrode terminal 120: negative electrode terminal
130: Upper support block 131: Coupling hole
132: engaging projection 140: lower supporting block
150: connection terminal 160: voltage measurement cell terminal
200: anode connection electrode 300: cathode connection electrode
500: main case 510: main body
520: main body cover 600: main board
610: Voltage measurement board terminal 700: Module guide section
710: Lead Screw

Claims (11)

delete delete delete delete A main case having a receiving space formed therein;
A main board disposed in an inner space of the main case;
A plurality of unit cell modules having a plurality of battery cells connected in series and having positive and negative terminals respectively connected to the plurality of battery cells at one side; And
Wherein the unit cell module is mounted on the main board and the positive and negative terminals of the unit cell module are detachably contacted with each other and the plurality of unit cell modules are detachably coupled through the positive and negative terminals, Connecting electrode and cathode connecting electrode
Wherein the unit cell module includes a plurality of voltage measurement cell terminals capable of measuring a voltage of each of the plurality of battery cells and a voltage measurement board terminal connected to the voltage measurement cell terminal Respectively,
Wherein the anode connection electrode and the cathode connection electrode are elongated in one direction, one end in the longitudinal direction is coupled to the main board,
A plurality of the unit cell modules are arranged in a row along the longitudinal direction of the anode connection electrode and the cathode connection electrode and are detachably coupled to the anode connection electrode and the cathode connection electrode,
The unit cell module
The upper and lower support blocks, which are disposed at the upper and lower ends of the battery cell, respectively,
Wherein the positive terminal and the negative terminal are respectively protruded from one end of the upper support block and the lower support block, and a plurality of battery cells are formed in the upper support block and the lower support block from the positive terminal to the negative terminal A connection terminal for connecting the battery cells so as to be serially connected in series,
The voltage measurement cell terminal is formed in the upper support block and the lower support block in a form extending from the connection terminal,
The unit cell modules adjacent to each other are in contact with each other in such a manner that the side surfaces of the upper support block and the lower support block contact each other,
A plurality of voltage measurement cell terminals formed on each unit cell module in a state where a plurality of the unit cell modules are in contact with each other are electrically connected to each other with corresponding voltage measurement cell terminals of adjacent unit cell modules Of the battery cell assembly.
6. The method of claim 5,
A first contact portion for exposing the voltage measurement cell terminal is formed on a first side of the upper support block and the lower support block so that the voltage measurement cell terminals of adjacent unit cell modules can be electrically connected to each other, And a second contact portion through which the voltage measurement cell terminal is exposed is formed on the second opposite side,
Wherein the first contact portion and the second contact portion are formed at mutually corresponding positions so that adjacent unit cell modules can be contact-connected with each other in a state where the unit cell modules are in contact with each other.
The method according to claim 6,
Wherein one of the first contact portion and the second contact portion is formed in a flat plate shape and the other one is formed in an elastic piece shape to elastically contact each other.
8. The method of claim 7,
Wherein the voltage measurement board terminal is formed in a flat plate shape or an elastic plate shape so as to make elastic contact with the first contact portion or the second contact portion of the voltage measurement cell terminal formed in the unit cell module closest to the main board. Cell module assembly.
6. The method of claim 5,
The unit cell module is connected to the positive electrode connection electrode and the negative electrode connection electrode and is mounted on the main board together with the positive electrode connection electrode and the negative electrode connection electrode, Wherein the voltage measurement cell terminal and the voltage measurement board terminal are formed to correspond to each other so that the voltage measurement board terminal can be electrically contacted.
10. The method of claim 9,
In the process of mounting the positive electrode connection electrode and the negative electrode connection electrode having a plurality of the unit cell modules on the main board, the voltage measurement cell terminal of the unit cell module closest to the main board and the voltage measurement cell terminal of the main board, Wherein a module guide portion for guiding a mounting position of the unit cell module is formed on the main case so that the module can be brought into contact with the main body.
6. The method of claim 5,
A coupling groove is formed at one side of at least one of the upper support block and the lower support block of the unit cell module and a coupling protrusion is formed at the other side of the unit cell module at a position corresponding to the coupling groove to be inserted into the coupling groove, And the unit cell modules adjacent to each other are detachably coupled to each other in a state where the unit cell modules are in contact with each other as the coupling grooves and the coupling protrusions are inserted and coupled.

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