WO2015065078A1

WO2015065078A1 - Sensing block and battery package including same

Info

Publication number: WO2015065078A1
Application number: PCT/KR2014/010331
Authority: WO
Inventors: 안광욱
Original assignee: 타이코에이엠피(유)
Priority date: 2013-10-31
Filing date: 2014-10-31
Publication date: 2015-05-07

Abstract

A sensing block according to embodiments of the present invention may comprise: a block body portion including a terminal seating part, and a cell lead coupling part provided on one side or both sides of the terminal seating part; and a first contacting member seated on the terminal seating part and constituted of a conductive material.

Description

Sensing block and battery package containing same

The present invention relates to a sensing block and a battery package including the same.

Batteries can be divided into primary cells that are used and discarded once and secondary cells that can be recharged and reused.

Due to its advantages, secondary batteries have been applied to various technical fields throughout the industry, are widely used as energy sources for electronic devices, and solve air pollution of existing gasoline and diesel internal combustion engines using fossil fuels. It is attracting attention as an energy source for hybrid electric vehicles.

As the secondary battery, a nickel metal hydride (Ni-MH) battery is mainly used, and recently, use of a lithium ion battery and the like has also been attempted. In order to satisfy a high output and a large capacity, a secondary battery has a large capacity secondary battery battery pack used by connecting a small unit cell (hereinafter, referred to as a battery cell) in series or in parallel. In the secondary battery battery pack, battery cells may be stacked with high density, and square or pouch type batteries are used to increase space utilization.

Korean Patent No. 10-1230954 discloses (a) a plurality of battery cells or unit modules connected in series or in parallel, or a plurality of battery cells or unit modules connected in series and in parallel in a lateral direction. A battery cell stack stacked on and provided with a bus bar at a front portion thereof for connecting an electrode terminal of the battery cell to an external input / output terminal; (b) voltage sensing members electrically connected to electrode terminal connecting portions of battery cells respectively positioned on the front and rear surfaces of the battery cell stack and having connection terminals at ends thereof for detecting voltage of the battery cells or unit modules; (c) an upper case having a structure surrounding the end portion of one side of the battery cell stack and a part of an upper end and a lower end thereof, the upper case having a mounting part for inserting and mounting the voltage sensing members; And (d) a structure coupled to the upper case while surrounding the other end portion and the upper and lower portions of the battery cell stack, and a lower case having an external input / output terminal on the front side thereof. This is disclosed.

In the conventional battery module, there is a problem that it is difficult to recognize from the outside whether the electrical connection of the electrode terminal and the voltage sensing member of the battery cell is properly made. In addition, there is a disadvantage that the connection between the electrode terminal of the battery cell and the external input and output terminals is not robust.

It is an object of the present invention to provide a sensing block and a battery package including the same, which are easy to assemble and can reliably guarantee an electrical connection state.

According to an embodiment of the present invention, a sensing block includes: a block body part including a terminal seating part and a cell lead coupling part provided on one or both sides of the terminal seating part; And a first connection member seated on the terminal seating portion and made of a conductive material.

The sensing block may further include a cell stack fastening part provided on one side of the block body part to fix the block body part to the battery cell stack.

The first connection member may include a terminal body part seated on the terminal seating part; A bent part bent from both sides of the terminal body part and provided in a shape surrounding both sides of the terminal seating part; And a connection part provided at one end of the terminal body part and narrowing toward an outer side thereof.

The sensing block may include a circuit board provided with a plurality of first connection members and connected to the plurality of first connection members; And a header pin for collecting the signal flowing through the circuit board and transmitting the signal to the outside.

The block body portion may include a circuit board mounting portion on which the circuit board is mounted; And a cover part for protecting the header pin.

The block body part may further include a first locking part provided on one side of the terminal seating part in a hook shape, and the first connection member may include a first locking part formed in a shape corresponding to the first locking part; Further comprising a, by the coupling of the first locking portion and the first locking portion, the first connection member may be fixed to the block body portion.

The block body portion may further include a second locking portion protruding from an upper surface of the terminal seating portion, and the first connection member may further include a second locking portion perforated to correspond to the second locking portion. .

The cell lead coupling part is a hole drilled in one or both sides of the terminal seating part, and the cell lead is exposed to the outside of the sensing block through the cell lead coupling part, and the first connection member is connected to the terminal seating part. A terminal body portion seated on the; And a bent portion bent from both sides of the terminal body portion and inserted into the cell lead coupling portion.

A battery package according to an embodiment of the present invention, a battery assembly including a battery cell stack formed by stacking a plurality of battery cells with a cell lead, and the sensing block coupled to the side of the battery cell stack; And a lower housing provided below the battery assembly, wherein the cell lead is inserted into the cell lead coupling part to be electrically and structurally connected to the first connection member.

The cell lead coupling part is a hole drilled in one or both sides of the terminal seating part, and the cell lead is exposed to the outside of the sensing block through the cell lead coupling part and exposed to the outside of the sensing block among the cell leads. The bent portion may be bent and welded in contact with the first connecting member.

The cell lead coupling part may be a hole drilled in both sides of the terminal seating part, and a plurality of cell leads may be provided to penetrate through the holes drilled in the both sides to be exposed to the outside of the sensing block. The exposed portions of the sensing block may be bent and laminated on the first connection member, respectively.

The lower housing includes a second connecting member provided at a position corresponding to the first connecting member. When the battery assembly is coupled to the lower housing, the first connecting member is connected to the second connecting member. Can be.

The lower housing may further include a guide rail extending upward from a lower side to guide the battery assembly to the lower housing.

The guide rail may be inserted at intervals between the plurality of battery cells.

A coupling hole is formed at an end of at least a portion of the guide rail of the guide rail, and a coupling member penetrating the upper housing may be inserted into the coupling hole.

The lower housing may further include a cover insertion part formed at an edge portion of the second connection member and accommodating the cover part.

The first connection member may be provided in plurality, and the sensing block may include a circuit board to which the plurality of first connection members are connected; And a header pin for collecting and transmitting a signal flowing to the circuit board to the outside, wherein the block body part includes: a circuit board seating part on which the circuit board is seated; And a cover part for protecting the header pin, wherein the lower housing is formed at an edge of the second connection member and is coupled to the cover part.

The lower housing may include a heat sink surrounding a lower end of the battery assembly; And side surfaces disposed on both sides of the heat sink, and surrounding side surfaces of the battery assembly.

A battery package according to another exemplary embodiment of the present disclosure may include a battery cell stack formed by stacking a plurality of battery cells including a plurality of battery cell leads including cell leads; A sensing block including a block body portion, a slide rib protruding from one surface of the block body portion, and a first connecting member connected to the cell lead, wherein the sensing block is coupled to a side surface of the battery cell stack; And a lower housing including a guide rib for guiding the slide rib in a sliding manner and a second connecting member structurally and electrically coupled to the first connecting member, and coupled to the lower side of the battery cell stack. Can be.

The lower housing may further include a guide rail extending upward from a lower side to guide the battery cell stack to be coupled to the lower housing.

The first connection member may include a terminal body part seated on the terminal seating part; And a connection part provided at one end of the terminal body part and narrowing toward an outer side thereof, wherein the sensing block further comprises a cover part provided to surround at least a part of the connection part. The display device may further include a cover inserting portion recessed on one side of the second connection member and coupled to the cover portion.

According to the present invention, the assembly of the battery package can be simplified. Specifically, the battery cells are structurally seated in the housing only by mounting the battery cell stack with the sensing block attached to the lower housing, and at the same time, electrical coupling for voltage sensing is completed.

In addition, the battery cell lead is inserted into the sensing block fixed to the side of the cell stack, and then the producer or the user can easily check the electrical connection state by connecting the cell lead and the bus bar of the sensing block from the outer surface. In other words, there is an advantage that can guarantee the electrical connection state inside the battery package.

1 is an exploded perspective view of a battery package according to a first embodiment of the present invention.

2 is a view illustrating a process in which a battery assembly according to a first embodiment of the present invention is coupled to a lower housing.

3 is a partial perspective view of a lower housing including a second connecting member according to a first embodiment of the present invention.

4 is an exploded perspective view of a sensing block according to a first embodiment of the present invention.

5 is a view showing a process of connecting the cell lead and the first connection member.

6 is a front sectional view in a state in which the sensing block and the lower housing are coupled according to the first embodiment of the present invention.

7 is a side cross-sectional view in a state in which a sensing block and a lower housing are coupled according to a first embodiment of the present invention.

8 is a partial top view of the upper housing in a separated state in the battery package according to the first embodiment of the present invention.

9 is an exploded perspective view of a battery package according to a second embodiment of the present invention.

10 is a perspective view illustrating a state in which a battery cell stack, a sensing block, and a lower housing are coupled according to a second embodiment of the present invention.

11 is an exploded perspective view of a sensing block according to a second embodiment of the present invention.

12 is a partial perspective view of a lower housing including a second connecting member according to a second embodiment of the present invention.

13 is a cross-sectional view in a state in which a sensing block and a lower housing are coupled according to a second embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiments of the present invention, when it is determined that a detailed description of a related well-known configuration or function interferes with the understanding of the embodiments of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be "connected", "coupled" or "connected".

1 is an exploded perspective view of a battery package according to a first embodiment of the present invention, Figure 2 is a view showing a process in which the battery assembly according to the first embodiment of the present invention is coupled to the lower housing.

1 and 2, the battery package 100 according to the first embodiment of the present invention includes a battery assembly 110 including a battery cell stack 120 and a sensing block 130, and a lower housing. 140, the upper housing 150, and the sensing wire 160 may be included. In addition, the sensing wire 160 may be connected to a controller 170 for controlling the battery package 100.

The battery assembly 110 may include the battery cell stack 120 and a sensing block 130 attached to one side or both sides of the battery cell stack 120.

The battery cell stack 120 may be formed by stacking a plurality of battery cells. The battery cell may be plate-shaped. For example, the battery cell may have a structure such as a plate-shaped battery cell disclosed in FIG. 1 of Korean Patent No. 10-123094. Detailed description of the battery cell will be omitted.

The battery cell stack 120 may include the plurality of battery cells, the cell leads 122, and a power bus bar (not shown).

The cell lead 122 is provided on one side or both sides of the battery cell to transfer the voltage of the battery cell.

The lower housing 140 may be provided below the battery assembly 110 to cover at least a portion of a lower end and / or a side surface of the battery assembly 110. The lower housing 140 may include a central portion 142 and a side portion 144.

The central portion 142 is a portion surrounding the lower end of the battery assembly 110. On the upper surface of the central portion 142, a plurality of ribs for partitioning and supporting individual battery cells may be provided. The central portion 142 may be formed of a material having excellent thermal conductivity so as to perform a heat sink function for dissipating heat generated from the battery cell stack 120 to the outside. In this case, the center portion 142 may be referred to as a "heat sink." The heat sink may be formed of, for example, a metal material such as copper or aluminum having good thermal conductivity.

The side part 144 surrounds a part of the side surface of the battery assembly 110 and may be structurally and electrically coupled with the sensing block 130. The side portion 144 may be coupled to one side or both sides of the central portion 122. The side portion 144 may prevent an external force from being applied to the sensing block 130 from the outside. The side portion 144 may be formed of a material different from that of the central portion 142. For example, the side portion 144 may be made of a synthetic resin such as plastic.

The upper housing 150 may be provided above the battery assembly 110 to surround at least a portion of the top and / or side surfaces of the battery assembly 110.

The sensing wire 160 may transfer information of the battery cell stack 120 to the controller 170. The sensing wire 160 may transmit, for example, information about a voltage of the individual battery cell or the battery cell stack 120 (including a current required for measuring the state of the battery cell) to the controller 170. . One side of the sensing wire 160 may be connected to the second connection member 148 (see FIG. 3) provided in the lower housing 140, and the other side thereof may be connected to the controller 170.

The controller 170 may detect a state of the battery cell by using information transmitted from the sensing wire 160.

As illustrated in FIG. 2, the sensing block 130 may be coupled to one side or both sides of the battery cell stack 120 to form a battery assembly 110. In this case, the cell lead 122 and the first connection member 136 of the sensing block 130 may be structurally and electrically connected. The battery assembly 110 may be coupled to the lower housing 140. In this case, the first connection member 136 and the second connection member 148 (see FIG. 3) may be structurally and electrically connected. Through this assembly process, the cell lead 122 may be electrically connected to the sensing wire 160 through the second connection member 148.

Referring to FIG. 3, the lower housing 140 according to the first embodiment of the present invention may include a guide rail 146, a guide rib 147, and a second connection member 148.

The guide rail 146 may guide the battery assembly 110 to the lower housing 140. The guide rail 146 may be a rail extending upward from a lower side of the lower housing 140. The guide rail 146 may be formed at one side of the central portion 142 or the side portion 144. The guide rail 146 may guide the battery assembly 110 to be coupled or separated in the vertical direction with reference to FIG. 1. The guide rail 146 may be provided in plurality.

The guide rib 147 guides the battery cell stack 120 to be coupled to the lower housing 140. Specifically, the guide rib 147 guides the slide rib 137 (FIG. 4) to be described later to be coupled in a sliding manner. The guide rib 147 may protrude from an inner wall of the side portion 144. An upper end of the guide rib 147 may be formed to be inclined downward toward the inside to allow the battery cell stack 120 to be smoothly coupled.

The second connection member 148 is a portion to which the first connection member 136 is structurally and electrically coupled. The second connection member 148 may be formed at one side of the central portion 142 or the side portion 144. For example, the second connection member 148 may be provided inside the side portion 144. The second connection member 148 may be provided in plural in correspondence with the number of the first connection members 136.

Shapes of the second connection member 148 may be provided to be detachable from each other corresponding to the shape of the first connection member 136. For example, one connection member of the first connection member 136 and the second connection member 136 may protrude, and the other connection member may be provided in a recessed shape to be coupled to each other. According to this shape, in the assembling process of the battery assembly 110 and the lower housing 140, the first connection member 136 and the second connection member 148 may be structurally and electrically connected.

On the other hand, one side or both sides of the second connection member 148 may be formed in the cover insertion portion of the shape corresponding to the cover portion 139 (Fig. 4) to be described later. The cover insertion part may be coupled to the cover part 139. The cover insertion part may be provided in a tapered shape so that the cover part 139 may be inserted smoothly.

Referring to FIG. 4, the sensing block 130 according to the first embodiment of the present invention includes a block body part 131, a cell stack fastening part 135, a first connection member 136, and a power source. The bus bar support part 138 and the cover part 139 may be included.

The block body 131 forms an outer shape of the sensing block 130. The block body portion 131 may include a terminal seating portion 132, a cell lead coupling portion 133, a locking portion 134, and a slide rib 137.

The terminal seating portion 132 is a portion on which the first connection member 136 is seated.

The cell lead coupling part 133 may be provided at one side or both sides of the terminal seating part 132. The cell lead 122 may be inserted into the cell lead coupling unit 133 to be electrically and structurally connected to the first connection member 136.

The cell lead coupling part 133 may be, for example, a hole drilled in one side or both sides of the terminal seating part 132. In this case, the cell lead 122 may be inserted through the cell lead coupling part 133 and exposed to the outer surface of the sensing block 130. However, this is only one example, and the cell lead coupling part 133 is not necessarily formed as a hole.

The locking part 134 fixes the first connection member 136 to the terminal seating part 132.

The locking unit 134 may be provided in plural numbers to support the first connection member 136 in different directions. For example, the locking part 134 may include a first locking part 134a formed on a side surface of the terminal seating part 132 and a second locking part 134b formed on an upper surface of the terminal seating part 132. ) May be included.

The first locking portion 134a may be, for example, a groove recessed from a side surface of the terminal seating portion 132.

The second locking portion 134b may be, for example, a protrusion that protrudes from an upper surface of the terminal seating portion 132.

According to the

locking parts

134a and 134b, when the first connection member 136 is coupled to the second connection member 148, the first connection member 136 is pushed back by an insertion repulsion force. Can be prevented. In conclusion, according to the

locking parts

134a and 134b, the first connection member 136 and the second connection member 148 may be firmly coupled to each other.

On the other hand, unlike the illustrated, the first locking portion 134a is a protrusion, and the second locking portion 134b may also be a groove. Detailed description thereof will be omitted.

The cell stack fastening part 135 is provided at one side of the block body part 131 to fix the block body part 131 to the battery cell stack 120. For example, the cell stack fastening part 135 may have a shape that is bent from both ends of the block body part 131. As shown in FIG. 1, grooves having a shape corresponding to the cell stack fastening part 135 may be formed at both sides of the battery cell stack 120.

The slide rib 137 may protrude from one surface of the block body portion 131. The slide rib 137 may have a shape corresponding to the guide rib 147 formed in the lower housing 140. The slide rib 137 may be inserted into a space between two adjacent guide ribs 147. For example, as shown in FIG. 3, the lower housing 140 includes six guide ribs 147, and as illustrated in FIG. 4, the sensing block 130 includes three guide ribs 147 corresponding to the six guide ribs 147. A slide rib 137 may be provided. However, in the present invention, the number of the guide ribs 147 and the slide ribs 137 is not limited. By the slide rib 137 and the guide rib 147, the sensing block 130 and the lower housing 150 can be stably coupled to the correct position. The first connecting member 136 may include a terminal body portion 136a, a bent portion 136b, a locking

portion

136c and 136e, and a connecting portion 136d.

The terminal body portion 136a forms an outer shape of the first connecting member 136.

The bent portion 136b may be bent from both sides of the terminal body 136a and may be provided in a shape surrounding both sides of the terminal seating portion 132.

The locking

portions

136c and 136e are formed in a shape corresponding to the

locking portions

134a and 134b to fix the first connection member 136 to the terminal seating portion 132.

The locking

portions

136c and 136e may be provided in plurality. For example, the locking

portions

136c and 136e may include a first locking portion 136c fastened to the first locking portion 134a and a second locking portion fastening to the second locking portion 134b. 136e).

The first locking portion 136c may be formed in the terminal body portion 136a or the bent portion 136b. For example, the first catching part 136c may be formed by cutting a portion where the terminal body part 136a and the bent part 136b are adjacent to each other.

The second locking portion 136e may be formed in the terminal body portion 136a. For example, the second locking portion 136e may be a hole drilled in the terminal body portion 136. The first locking portion 134b may be inserted into the second locking portion 136e.

The connecting portion 136d is a portion that is coupled to the second connecting member 148. The connection part 136d may protrude, for example, into a wedge shape. The connection part 136 may have a shape in which at least a portion thereof narrows toward the outside. In other words, the width of the end portion of the connecting portion 136 may be formed to be narrower than the width of the remaining portion, so that the connecting portion 136d and the second connecting member 148 may be easily coupled.

Alternatively, the shapes of the connecting portion 136d and the second connecting member 148 may be reversed. For example, the second connection member 148 may protrude in a wedge shape, and the connection part 136d may be provided to be detachable from each other in correspondence with the shape of the second connection member 148.

The power bus bar support unit 138 may allow the power bus bar (not shown) to be spaced apart from the cell lead 122. In other words, the power bus bar support unit 138 may prevent the power bus bar (not shown) from directly contacting the cell lead 122. The power busbar support part 138 may be a non-conductive material connected to the block body part 131. The power bus bar support part 138 may be provided integrally with the block body part 131 or may be provided as a separate member.

The cover part 139 may be provided to surround at least a part of the connection part 136d. The cover part 139 may extend from the block body part 131 in a direction in which the connection part 136d is exposed. The cover part 139 may be formed on one side or both sides of the connection part 136d. The cover part 139 may extend outwardly than the connection part 136d. According to the cover part 139, the connection part 136d can be prevented from being bent under unexpected external force in a work process.

The cover part 139 may be coupled to a cover insertion part provided at one side or both sides of the second connection member 148. An end portion of the cover portion 139 may be provided in a tapered shape. According to such a shape, the cover part 139 may be gently inserted into the cover insertion part.

5 is a view illustrating a process of connecting the cell lead and the first connection member.

Referring to FIG. 5, in the process of coupling the sensing block 130 to the battery cell stack 120, the cell lead 122 penetrates through the cell lead coupling unit 133 to sense the sensing block 130. ) Can be exposed to the outside. Two cell leads 122 may be disposed at both sides with respect to one first connection member 136.

The exposed portion of one of the two cell leads 122 may be bent to be in contact with the first connection member 136. Likewise, the exposed portion of the other cell lead 122 may be bent to be in contact with the first connection member 136. In this manner, the cell lead 122 and the first connection member 136 may be electrically connected.

In order to secure the electrical connection in the above state, it is also possible to weld the cell lead 122 and the first connection member 136, or to fix by a bolt fixing method. As the welding method, laser welding, ultrasonic welding, or the like may be used.

By the above method, it is possible to visually check whether the cell lead 122 and the first connection member 136 are properly connected to the outside of the battery assembly 110.

6 is a front sectional view in a state in which the sensing block and the lower housing are coupled according to the first embodiment of the present invention, and FIG. 7 is a state in which the sensing block and the lower housing are coupled according to the first embodiment of the present invention. 8 is a side cross-sectional view, and FIG. 8 is a view illustrating a part of a top view of a state in which an upper housing is separated from a battery package according to a first embodiment of the present invention.

6 to 8, when the battery assembly 110 is coupled to the lower housing 140, the connecting portion 136d of the first connecting member 136 may be connected to the second connecting member 148. Can be.

In addition, the guide rails 146 may be inserted at intervals between the battery cell stack 120 and the sensing block 130 to prevent the battery assembly 110 from moving in the right and left directions. The guide rail 146 may be inserted into a space between a plurality of individual battery cells constituting the battery cell stack 120.

9 is an exploded perspective view of a battery package according to a second embodiment of the present invention, Figure 10 is a perspective view showing a state in which the battery cell stack, the sensing block and the lower housing according to the second embodiment of the present invention is coupled. Unless stated to the contrary, the description of the first embodiment may be equally applicable to the second embodiment. Duplicate descriptions will be omitted below.

9 and 10, the battery package 200 according to the second embodiment of the present invention includes a battery assembly 210 including a battery cell stack 220 and a sensing block 230, and a lower housing. 240 and an upper housing 250. The cell lead 122 may be provided in the battery cell stack 220.

As in the first embodiment of the present disclosure, the cell lead 122 may be connected to the first connection member 236 (see FIG. 11) of the sensing block 230.

Referring to FIG. 11, the sensing block 230 according to the second embodiment of the present invention may include a block body part 231, a cell stack fastening part 235, and a first connection member 236. Can be.

The block body part 231 may include a terminal seating part 232, a cell lead coupling part 233, a locking part 134, and a circuit board seating part 237.

The terminal seating portion 232 is a portion on which the first connection member 236 is seated.

The cell lead coupling part 233 may be provided on one side or both sides of the terminal seating part 232. The cell lead 122 may be inserted into the cell lead coupler 233 to be electrically and structurally connected to the first connection member 236.

The cell lead coupling part 233 may be, for example, a hole which is drilled in one side or both sides of the terminal seating part 232. In this case, the cell lead 122 may be inserted through the cell lead coupling part 233 to be exposed to the outer surface of the sensing block 230.

The locking portion 234 fixes the first connection member 236 to the terminal seating portion 232. The locking part 234 may be formed at one side of the terminal seating part 232. The locking portion 234 may be, for example, a hook shape.

The circuit board mounting part 237 is a space in which the circuit board 236e is seated. The circuit board mounting part 237 may be recessed on one side of the block body part 231. The circuit board seating part 237 may be formed long in a direction crossing the length direction of the terminal seating part 232. For example, the circuit board mounting part 237 may be formed in a direction perpendicular to the terminal seating part 232. The circuit board 236e may be firmly fixed by the circuit board mounting part 237.

The cover part 237a may be extended on one side of the circuit board seating part 237. The cover part 237a may function to protect the header pin 236f.

For example, the cover part 237a may be provided on the opposite side of the terminal seating part 232 about the circuit board seating part 237. The cover part 237a may be provided at a central portion of the circuit board seating part 237. The cover part 237a may be formed in a substantially 'c' shape.

By the cover part 237a, the header pin 236f may be prevented from being bent or damaged by an external force. In addition, according to the shape of the cover portion 237a, it may be engaged with the cover inserting portion 249 to be described later to guide the header pin 236f to be inserted in the correct direction.

The cell stack fastening part 235 is provided at one side of the block body part 231 to fix the block body part 231 to the battery cell stack 220. For example, the cell stack fastening part 235 may be bent from both ends of the block body part 231. The cell stack fastening part 234 may have a hook shape, for example.

The first connection member 236 includes a terminal body portion 236a, a bent portion 236b, a locking portion 236c, a connecting portion 236d, a circuit board 236e, and a header pin 236f. It may include.

The terminal body portion 236a forms an outer shape of the first connection member 236. The cell lead 122 may be connected to the terminal body 236a.

The bent portion 236b may be bent from both sides of the terminal body portion 216a and may be provided in a shape surrounding both sides of the terminal seating portion 232.

The locking portion 236c is formed in a shape corresponding to the locking portion 234 to fix the first connection member 236 to the terminal seating portion 232. The locking portion 236c may be formed in the terminal body portion 236a or the bent portion 236b. For example, the locking portion 236c may be formed by cutting a portion where the terminal body 236a and the bent portion 236b are adjacent to each other.

The connection part 236d may be connected to the circuit board 236e. When the plurality of connection portions 136d is provided, the plurality of connection portions 136d may be connected to one circuit board 236e and electrically connected to each other. The cell lead 122 and the circuit board 236e may be electrically connected through the connection part 236d.

The circuit board 236e may be electrically connected to the connection part 236d to transmit information transmitted from the cell lead 122 to the second connection member 248 (see FIG. 12), which will be described later. The circuit board 236e may be seated on the circuit board mounting part 237.

The header pin 236f may be provided at one side of the circuit board 236e and may be coupled to the second connection member 248. The header pin 236f may be provided inside the cover part 237a. In other words, the cover part 237a may be provided to surround at least a portion of the header pin 236f.

For example, the header pin 236f may be provided on the opposite side of the terminal body portion 236a about the circuit board 236e. The header pin 236f may be provided at the center of the circuit board 236e.

Referring to FIG. 12, the lower housing 240 according to the second embodiment of the present invention may include a guide rail 246 and a second connection member 248.

The guide rail 246 may guide the battery assembly 210 to the lower housing 240. The guide rail 246 may be a rail extending upward from a lower side of the lower housing 240. The guide rail 246 may be formed at one side of the central portion 242 or the side portion 244. The guide rail 246 may guide the battery assembly 210 to be coupled or separated in the vertical direction with reference to FIG. 8.

The second connection member 248 is a portion to which the first connection member 236 is structurally and electrically coupled. The second connection member 248 may be provided at a position corresponding to the first connection member 236. The second connection member 248 may be provided to be detachably attached to the header pin 246f.

A cover inserting portion 249 for inserting the cover portion 237a may be formed at an edge portion of the second connection member 248. The cover inserting portion 249 may be a groove recessed from one surface of the lower housing 240 or a hole in which a portion of the lower housing 240 is cut.

The cover insertion part 249 may be formed in a shape corresponding to the cover part 237a. For example, the cover insertion part 249 may be formed in a "c" shape.

In the process of assembling the battery assembly 210 and the lower housing 240, the first connection member 236 and the second connection member 248 may be structurally and electrically connected to each other.

As shown in FIG. 13, when the battery assembly 210 is coupled to the lower housing 240, the header pin 236f of the first connecting member 236 may be connected to the second connecting member 248. . In other words, only the assembly of the battery assembly 210 and the lower housing 240 may allow the first connection member 236 and the second connection member 248 to be structurally and electrically connected to each other.

According to the present invention, the assembly of the battery package can be simplified. Specifically, the battery cells are structurally seated in the housing only by mounting the battery cell stack with the sensing block attached to the lower housing, and at the same time, electrical coupling for voltage sensing is completed. In addition, the battery cell lead is inserted into the sensing block fixed to the side of the cell stack, and then the producer or the user can easily check the electrical connection state by connecting the cell lead and the bus bar of the sensing block from the outer surface. In other words, there is an advantage that can guarantee the electrical connection state inside the battery package.

The embodiments described above are merely to describe the preferred embodiments of the present invention, the scope of the present invention is not limited to the described embodiments, the technical spirit and patents of the present invention by those skilled in the art Various changes, modifications, or substitutions may be made within the scope of the claims, and such embodiments should be considered to be within the scope of the present invention.

Claims

A block body part including a terminal seating part and a cell lead coupling part provided on one or both sides of the terminal seating part; And

And a first connection member seated on the terminal seat and provided with a conductive material.
The method of claim 1,

And a cell stack fastening part provided on one side of the block body part to fix the block body part to the battery cell stack.
The method of claim 1,

The first connection member,

A terminal body part seated on the terminal seating part;

A bent part bent from both sides of the terminal body part and provided in a shape surrounding both sides of the terminal seating part; And

And a connection part provided at one end of the terminal body part and narrowing toward an outer side thereof.
The method of claim 1,

The first connecting member is provided in plurality,

A circuit board to which the plurality of first connection members are connected; And

And a header pin for collecting and transmitting a signal flowing through the circuit board to the outside.
The method of claim 4, wherein

The block body portion,

A circuit board mounting part on which the circuit board is mounted; And

Sensing block further comprises a cover portion for protecting the header pin
The method of claim 1,

The block body portion further includes a first locking portion provided on one side of the terminal seating portion in a hook shape.

The first connection member further includes a first locking portion formed in a shape corresponding to the first locking portion.

And the first connection member is fixed to the block body part by coupling the first locking part and the first locking part.
The method of claim 1,

The block body portion further includes a second locking portion protruding from an upper surface of the terminal seating portion.

The first connecting member further includes a second locking portion which is drilled to correspond to the second locking portion.
The method of claim 7, wherein

The cell lead coupling part is a hole drilled in one or both sides of the terminal seating part, and the cell lead is exposed to the outside of the sensing block through the cell lead coupling part.

The first connection member,

A terminal body part seated on the terminal seating part; And

And a bending portion bent from both sides of the terminal body portion and inserted into the cell lead coupling portion.
A battery assembly including a battery cell stack formed by stacking a plurality of battery cells with cell leads, and a sensing block coupled to a side surface of the battery cell stack; And

And a lower housing provided below the battery assembly.

The sensing block,

A block body part including a terminal seating part and a cell lead coupling part provided on one or both sides of the terminal seating part; And

And a first connection member seated on the terminal seating portion and made of a conductive material.

The cell lead is inserted into the cell lead coupling portion, the battery package, characterized in that electrically connected to the first connection member structurally.
The method of claim 9,

The cell lead coupling part is a hole drilled in one or both sides of the terminal seating part, and the cell lead is exposed to the outside of the sensing block through the cell lead coupling part.

The part of the cell lead exposed to the outside of the sensing block is bent, the battery package, characterized in that welded in contact with the first connection member.
The method of claim 9,

The cell lead coupling portion is a hole drilled in both sides of the terminal seating portion,

The cell leads are provided in plural numbers and penetrate through the holes drilled in the both sides to be exposed to the outside of the sensing block.

Part of the cell lead exposed to the outside of the sensing block, each of the battery package, characterized in that bent and laminated on the first connection member.
The method of claim 9,

The lower housing,

And a second connecting member provided at a position corresponding to the first connecting member.

And when the battery assembly is coupled to the lower housing, the first connection member is connected to the second connection member.
The method of claim 12,

The lower housing,

And a guide rail extending upward from a lower side to guide coupling of the battery assembly to the lower housing.
The method of claim 13,

The guide rail,

The battery package, characterized in that inserted into the interval between the plurality of battery cells.
The method of claim 13,

An upper housing provided above the battery assembly; And

Further comprising; a fastening member for fastening the upper housing and the lower housing,

A coupling tool is formed at an end of at least a part of the guide rail of the guide rail, and the fastening member is inserted into the coupling tool through the upper housing.
The method of claim 9,

The first connecting member is provided in plurality,

The sensing block,

A circuit board to which the plurality of first connection members are connected; And

And a header pin for collecting the signal flowing through the circuit board and transmitting the signal to the outside.

The lower housing,

And a second connection member provided at a position corresponding to the header pin.

And when the battery assembly is coupled to the lower housing, the header pin is connected to the second connecting member.
The method of claim 16,

The block body portion may include a circuit board mounting portion on which the circuit board is mounted; And a cover part for protecting the header pin.

The lower housing further includes a cover insertion part formed at an edge of the second connection member and coupled to the cover part.
The method of claim 9,

The lower housing,

A heat sink surrounding a lower end of the battery assembly; And

And side surfaces disposed on both sides of the heat sink and surrounding side surfaces of the battery assembly.
A battery cell stack formed by stacking a plurality of battery cells with cell leads;

A sensing block including a block body portion, a slide rib protruding from one surface of the block body portion, and a first connecting member connected to the cell lead, wherein the sensing block is coupled to a side surface of the battery cell stack; And

And a guide rib for guiding the slide rib in a sliding manner, and a lower housing coupled to the lower side of the battery cell stack, the lower housing including a second connecting member structurally and electrically coupled to the first connecting member. package.
The method of claim 19,

The first connection member,

A terminal body part seated on the block body part; And

A connection part provided at one end of the terminal body part and narrowing toward an outer side thereof;

The sensing block,

Further comprising a cover portion provided to surround at least a portion of the connecting portion,

The lower housing,

A battery package further comprising: a cover insertion portion recessed on one side of the second connection member and coupled to the cover portion.