KR102047480B1 - Battery module and battery pack including the same - Google Patents

Abstract

Battery module according to an aspect of the present invention for solving the above problems, a plurality of secondary batteries each having an electrode lead, and at least one secondary battery of the secondary batteries, respectively, a plurality of stacked in multiple stages A cartridge stack comprising cartridges; An ICB housing having a connection pin protruding in a predetermined connection direction, the bus bar being connected to the electrode lead, and coupled to one surface of the cartridge stack; And a sensing connector assembly connected to the connecting pin to sense the pressure of the secondary batteries; The sensing connector assembly includes a sensing housing having a connection hole into which the connection pin is inserted and a receptacle coupled to the inside of the connection hole to be connected to the connection pin inserted into the connection hole. The present invention has a structure in which the fastening and connection aspects of the bus bar connected to the secondary batteries and the sensing housing for electrically connecting the bus bar with an external measurement circuit are exposed to the outside, so that the bus bar and the sensing housing are fastened. And time can be checked for connection, reducing the time required to check the connection and connection of the busbar and the sensing housing, and the failure of the voltage measurement of secondary batteries due to the non-connection and disconnection of the busbar and the sensing housing. You can prevent it.

Description

Battery module and battery pack including same {Battery module and battery pack including the same}

The present invention relates to a battery module and a battery pack including the same.

In recent years, the demand for portable electronic products such as notebooks, video cameras, mobile phones, etc. has been rapidly increased, and development of electric vehicles, storage batteries for energy storage, robots, satellites, etc. has been in earnest, and thus high-performance secondary batteries capable of repeating charge and discharge There is an active research on.

Commercially available secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, and thus are free of charge and discharge. The self-discharge rate is very low and the energy density is high.

Such lithium secondary batteries mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively. The lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with the positive electrode active material and the negative electrode active material are disposed with a separator interposed therebetween, and an exterior material for sealing and storing the electrode assembly together with an electrolyte, that is, a battery case.

In general, a lithium secondary battery may be classified into a can type secondary battery in which an electrode assembly is embedded in a metal can and a pouch type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of the exterior material.

Recently, secondary batteries are widely used not only in small devices such as portable electronic devices but also in medium and large devices such as automobiles and power storage devices. When used in such medium and large devices, a large number of secondary batteries are electrically connected to increase capacity and output. In particular, the pouch type secondary battery is widely used in such a medium-large size device because of its easy storage and lamination.

The battery module may refer to a component in which a plurality of secondary batteries are connected in series or in parallel in order to increase capacity and output. The battery module includes a sensing member for sensing the voltage of the secondary batteries in order to maintain stable performance. In general, the sensing member is mounted and installed inside the module case provided to surround the battery module to protect it from the outside. The sensing member is fastened and connected to the electrode leads of the secondary batteries to electrically connect the electrode leads of the secondary batteries to an external measurement circuit. Connect with However, when the sensing member is mounted inside the module case as described above, since the fastening and connection aspects of the busbar and the sensing member are covered by the module case, it is difficult to visually check whether the busbar and the sensing member are fastened and connected. Therefore, the conventional battery module takes a long time to check whether the busbar and the sensing member are fastened and connected, and it is difficult to stably perform voltage measurement of secondary batteries.

The present invention has been made in view of the above-described problem, and a battery module having an improved structure to easily check the fastening and connection aspects of a sensing member for sensing a voltage of a bus bar and secondary batteries connected to secondary batteries and the same Its purpose is to provide a battery pack that includes.

Battery module according to an aspect of the present invention for solving the above problems, a plurality of secondary batteries each having an electrode lead, and at least one secondary battery of the secondary batteries, respectively, a plurality of stacked in multiple stages A cartridge stack comprising cartridges; An ICB housing having a connection pin protruding in a predetermined connection direction, the bus bar being connected to the electrode lead, and coupled to one surface of the cartridge stack; And a sensing connector assembly connected to the connection pin to sense the pressure of the secondary batteries; The sensing connector assembly may include a sensing housing having a connection hole into which the connection pin is inserted and a receptacle mounted inside the connection hole to be connected to the connection pin inserted into the connection hole.

Preferably, the ICB housing further includes a lead hole perforated to allow an end of the electrode lead to pass, the bus bar is coupled to an outer surface of the ICB housing, and the electrode lead passes through the lead hole. An end protruding to the outside of the ICB housing is formed by bending at a predetermined angle, and has a connection part connected to the bus bar at a predetermined connection point.

Preferably, further comprising a cooling plate coupled to the other surface of the cartridge stack, wherein the connecting pin protrudes toward the cooling plate, and the sensing housing is configured to provide the cooling plate when the cooling plate is coupled to the cartridge stack. The connection pin is inserted into the connection hole is characterized in that coupled to the predetermined coupling position of the cooling plate to be connected to the receptacle.

Preferably, the sensing connector assembly, the sensing wire is coupled and connected to the receptacle; And a sensing connector coupled to and connected to the sensing wire.

Preferably, the connection connector assembly further comprises a connection connector assembly for electrically connecting the sensing connector assembly with an external measurement circuit capable of measuring the voltage of the secondary batteries, wherein the connection connector assembly comprises: a sub connector fastened and connected to the sensing connector; A main connector fastened and connected to a circuit connector of the measurement circuit; And a connection wire for electrically connecting the sub connector and the main connector.

Preferably, the sensing connector is coupled to the sensing housing, wherein the sub-connector is coupled to a predetermined engagement position of the ICB housing to be engaged with the sensing connector when the cooling plate is coupled to the cartridge stack. do.

Battery pack according to another aspect of the present invention for solving the above problems is characterized in that it comprises the above-described battery module.

An automobile according to another aspect of the present invention for solving the above problems is characterized in that it comprises the battery pack described above.

The battery module and the battery pack including the same according to the present invention have the following effects.

First, since the fastening and connection aspects of the bus bar connected to the secondary batteries and the sensing housing for electrically connecting the bus bar to an external measurement circuit are exposed to the outside, whether the bus bar and the sensing housing are fastened and connected. Time can be checked to reduce the time required to check whether the busbar and the sensing housing are fastened and connected, and to prevent the failure of voltage measurement of secondary batteries due to the unfastened or unconnected busbar and the sensing housing. have.

Second, since the bus bar and the sensing housing are automatically fastened and connected when installing a cooling plate for cooling the secondary batteries, the assembly of the battery module is required compared to when the bus bar and the sensing housing are individually fastened and connected. Save time.

1 is an exploded perspective view of the front of a battery module according to a preferred embodiment of the present invention.
Figure 2 is an exploded perspective view of the rear of the battery module shown in FIG.
3 is a cross-sectional view taken along the line II ′ of the cartridge stack shown in FIG. 1.
4 is a perspective view illustrating a schematic configuration of the secondary battery illustrated in FIG. 3.
FIG. 5 is a partial enlarged view of area A of FIG. 3; FIG.
FIG. 6 is a partially enlarged view of area B of FIG. 3; FIG.
7 is an exploded perspective view of the cooling plate and the sensing connector assembly shown in FIG. 2.
8 is a perspective view of the cooling plate and the sensing connector assembly shown in FIG.
9 is a rear perspective view of the battery module shown in FIG.
FIG. 10 is a cross-sectional view taken along line II-II ′ of the battery module shown in FIG. 9. FIG.
FIG. 11A is a front perspective view of the first sensing housing shown in FIG. 7. FIG.
FIG. 11B is a rear perspective view of the first sensing housing shown in FIG. 7. FIG.
12 is a partially enlarged view of area C of FIG. 10.
13A is a front perspective view of the second sensing housing shown in FIG. 7.
FIG. 13B is a rear perspective view of the second sensing housing shown in FIG. 7. FIG.
FIG. 14 is an enlarged view of a portion D of FIG. 10. FIG.
FIG. 15 is a rear view of the battery module shown in FIG. 9.

The terms or words used in this specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

In the drawings, the size of each component or a specific portion constituting the components is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. Thus, the size of each component does not entirely reflect its actual size. If it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, such description will be omitted.

1 is an exploded perspective view of the battery module according to a preferred embodiment of the present invention, and FIG. 2 is an exploded perspective view of the battery module illustrated in FIG. 1.

1 and 2, a battery module 1 according to a preferred embodiment of the present invention includes a plurality of secondary cells 12 having electrode leads 16 and at least one of the secondary cells 12. A cartridge stack 10 having a plurality of cartridges 14 stacked in multiple stages, each containing a secondary battery 12; An ICB housing 20 having a connection pin protruding in a predetermined connection direction, the bus bar being connected to the electrode leads 16 of the secondary batteries 12, and coupled to one surface of the cartridge stack 10; A cooling plate 30 dissipating heat generated in the secondary batteries 12 to the outside and coupled to the other surface of the cartridge stack 10; A sensing connector assembly 40 having a sensing housing connected to a connection pin of a bus bar to sense a voltage of the secondary batteries 12 and coupled to a cooling plate 30; And a connecting connector assembly 50 electrically connecting the sensing connector assembly 40 to an external measurement circuit and coupled to the ICB housing 20. A plurality of such battery modules 1 may be connected by a predetermined electrical connection method to configure a battery pack. In addition, such a battery pack may be installed and used in an automobile.

3 is a cross-sectional view taken along line II ′ of the cartridge stack illustrated in FIG. 1, and FIG. 4 is a perspective view illustrating a schematic configuration of the secondary battery illustrated in FIG. 3.

First, the cartridge stack 10 is a member for accommodating a plurality of secondary batteries 12.

As illustrated in FIG. 3, the cartridge stack 10 includes a plurality of cartridges 12 and a plurality of cartridges respectively accommodating at least one secondary battery 12 of the secondary batteries 12. 14).

The secondary batteries 12 are preferably composed of lithium polymer batteries. However, the present invention is not limited thereto, and the secondary batteries 12 may include lithium ion batteries, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries, and the like.

The secondary batteries 12 are preferably configured in a pouch type, as shown in FIG. However, the present invention is not limited thereto, and the secondary batteries 12 may be formed in a cylindrical shape, a square shape, or the like.

As illustrated in FIG. 4, the secondary battery 12 is provided at one end of the secondary battery 12, and includes a first electrode lead 16 having a polarity of one of a positive electrode and a negative electrode, and a secondary battery 12. It is provided at the other end of, and includes a second electrode lead 18 having a polarity of the other of the positive electrode and the negative electrode.

The cartridges 14 each receive and hold these secondary batteries 12 such that the electrode leads 16 protrude out of the cartridge 14, as shown in FIG. 3. Thus, the secondary batteries 12 are prevented from flowing by these cartridges 14.

The cartridges 14 are configured to be stackable with each other to facilitate stacking and assembly of the secondary batteries 12. Thus, the cartridges 14 are stacked in multiple stages to form the cartridge stack 10.

5 is a partially enlarged view of region A of FIG. 3, and FIG. 6 is a partially enlarged view of region B of FIG. 3.

Next, the ICB housing 20 is a member for electrically connecting the secondary batteries 12.

The ICB housing 20 electrically connects the first ICB housing 60 that electrically connects the first electrode leads 16 of the secondary batteries 12 and the second electrode leads 18 of the secondary batteries 12 to each other. And a second ICB housing 70 for connecting.

As illustrated in FIG. 1, the first ICB housing 60 may include a first lead hole 62 and a first lead hole 62 that are perforated to pass the first electrode leads 16 of the secondary batteries 12. And a first bus bar 64 connected to the first electrode lead 16 of the secondary batteries 12 passing through). As shown in FIG. 1, the first ICB housing 60 is disposed on the front surface of the cartridge stack 10 so that the first electrode leads 16 of the secondary batteries 12 pass through the first lead holes 62. Combined.

As illustrated in FIG. 1, a plurality of first lead holes 62 are perforated at predetermined intervals so that the first electrode leads 16 of the secondary batteries 12 may pass through, respectively.

As shown in FIG. 1, the first bus bar 64 is mounted to an outer surface of the first ICB housing 60 to surround at least a portion of the circumference of the first lead holes 62. The number of installations of the first bus bars 64 is not particularly limited, and at least one first bus bar 64 may be installed according to an electrical connection method of the secondary batteries 12. For example, as illustrated in FIG. 1, a pair of first bus bars 64 may be provided. In addition, when the plurality of first bus bars 64 are provided, the first bus bars 64 may be shorted or opened according to the electrical connection method of the secondary batteries 12.

As shown in FIG. 1, the first bus bar 64 includes a first connection tab 66 provided at a lower end portion. The first connection tab 66 includes a first connecting pin 66a protruding toward the lower side of the cartridge stack 10, that is, toward the cooling plate 30. The number of installation of the first connection tabs 66 is not particularly limited, and at least one first connection tab 66 may be installed according to an electrical connection method of the secondary batteries 12. For example, as shown in FIG. 1, one first connection tab 66 may be provided for each first bus bar 64.

This first bus bar 64 is electrically connected to the first connection portion 16a of the first electrode leads 16 at a predetermined connection point P, as shown in FIG. 5. As illustrated in FIG. 5, the first connecting portion 16a may have a first end portion of the first electrode leads 16 protruding out of the first ICB housing 60 through the first lead hole 62. The bus bar 64 is bent and formed at a predetermined angle to be connected at the connection point P.

As shown in FIG. 2, the second ICB housing 70 includes a second lead hole 72 and a second lead hole 72 that are perforated to pass through the second electrode lead 18 of the secondary batteries 12. The second bus bar 74 is connected to the second electrode lead 18 of the secondary batteries 12 passing through). As shown in FIG. 2, the second ICB housing 70 includes the cartridge stack 10 of the cartridge stack 10 such that the second electrode leads 18 of the secondary batteries 12 pass through the second lead holes 72. Is coupled to the rear.

As illustrated in FIG. 2, a plurality of second lead holes 72 are drilled at predetermined intervals so that the electrode leads 16 of the secondary batteries 12 may pass through, respectively.

As shown in FIG. 2, the second bus bar 74 is mounted to an outer surface of the second ICB housing 70 to surround at least a portion of the circumference of the second lead holes 72. The number of installations of the second bus bars 74 is not particularly limited, and at least one second bus bar 74 may be installed according to an electrical connection method of the secondary batteries 12. For example, a pair of second bus bars 74 may be provided, as shown in FIG. 2. In addition, when a plurality of second bus bars 74 are provided, the second bus bars 74 may be shorted or opened according to the electrical connection method of the secondary batteries 12.

As illustrated in FIG. 2, the second bus bar 74 includes a second connection tab 76 provided at a lower end thereof. The second connection tab 76 includes a second connecting pin 76a protruding toward the lower side of the cartridge stack 10, that is, toward the cooling plate 30. The number of installation of the second connection tabs 76 is not particularly limited, and at least one second connection tab 76 may be installed according to the electrical connection method of the secondary batteries 12. For example, as shown in FIG. 2, the second connection tab 76 may be provided only on the second bus bar 74 of any one of the second bus bars 74.

As shown in FIG. 6, the second bus bar 74 is electrically connected to the second connection portion 18a of the second electrode leads 18 at a predetermined connection point P. As shown in FIG. As shown in FIG. 6, the second connection part 18a has a second end portion of the second electrode leads 18 protruding out of the second ICB housing 70 through the second lead hole 72. The bus bar 74 is bent at a predetermined angle so as to be connected to the connection point P.

FIG. 7 is an exploded perspective view of the cooling plate and the sensing connector assembly illustrated in FIG. 2, and FIG. 8 is a combined perspective view of the cooling plate and the sensing connector assembly illustrated in FIG. 2, and FIG. 9 is a rear view of the battery module illustrated in FIG. 2. 10 is a perspective view, and FIG. 10 is a cross-sectional view taken along line II-II 'of the battery module shown in FIG. 9.

Next, the cooling plate 30 is a member for dissipating heat generated in the secondary batteries 12 to the outside.

As shown in FIG. 7, the cooling plate 30 is formed from the plate body 32, the first coupling portion 34 extending from one end of the plate body 32, and the other end of the plate body 32. It may include a second coupling portion 36 is formed to extend, and a wire insertion groove 38 is provided to be inserted into the sensing wire 45 of the sensing connector assembly 40 to be described later.

The cooling plate 30 is coupled to the bottom surface of the cartridge stack 10 in a state of being integrally coupled with the sensing connector assembly 40, as shown in FIGS. 8 and 9. More specifically, the cooling plate 30, as shown in FIG. 10, the plate body 32 is in contact with the cartridges 14 and the first coupling portion 34 is in contact with the first ICB housing 60. The second coupling portion 36 is faced and coupled to the bottom surface of the cartridge stack 10 so as to face the second ICB housing 70. The coupling method of the cooling plate 30 and the cartridge stack 10 is not particularly limited, and the cooling plate 30 and the cartridge stack 10 may be coupled using various coupling methods such as screw coupling and hook coupling.

The cooling plate 30 receives the heat generated from the secondary batteries 12 through the cartridges 14 and releases the heat to the outside, thereby cooling the secondary batteries 12.

Next, the sensing connector assembly 40 is a member for sensing the voltage of the secondary batteries 12.

As illustrated in FIG. 7, the sensing connector assembly 40 may include a first sensing housing 41 and a second bus bar that may be connected to the first connection pin 66a of the first bus bar 64. A sensing wire 45 coupled to and connected to the second sensing housing 43, the sensing housings 41 and 43, and the sensing wire 45 so as to be connectable with the second connecting pin 76a of the 74. And a sensing connector 47 that is coupled and connected. The sensing connector assembly 40 is integrally coupled with the cooling plate 30, as shown in FIG. 8.

FIG. 11A is a front perspective view of the first sensing housing shown in FIG. 7, FIG. 11B is a rear perspective view of the first sensing housing shown in FIG. 7, and FIG. 12 is a partially enlarged view of region C of FIG. 10.

The first sensing housing 41 includes a first connecting hole 41a into which the first connecting pin 66a of the first connecting tab 66 is inserted, and a first housing pedestal for supporting the first sensing housing 41. 41b, a first coupling rib 41c for coupling the first coupling portion 34 of the cooling plate 30 and the first sensing housing 41, and the sensing wire 45 to the wire insertion groove 38. The first receptacle mounted inside the first connecting hole 41a to be engaged and connected to the first wire guide groove 41d guided to the first connecting hole 66a and the first connecting pin 66a inserted into the first connecting hole 41a. And 41e.

As shown in FIG. 11A, the first connection hole 41a is drilled to penetrate the first sensing housing 41 in the vertical direction. The first connecting hole 41a has a predetermined shape such that the first connecting pin 66a and the first receptacle 41e are inserted and fixed, respectively.

The first connection holes 41a are formed in the same number as the first connection tabs 66. For example, when a pair of first connection tabs 66 are provided, as shown in FIG. 11A, a pair of first connection holes 41a may be formed correspondingly. When the pair of first connection holes 41a are formed as described above, the first connection holes 41a are formed to be spaced apart from each other by the same interval as the distance between the first connection pins 66a.

As shown in FIG. 11B, the first housing pedestal 41b has a rear side direction of the first sensing housing 41 at the lower end of the first sensing housing 41 so as to support the first sensing housing 41. Extending toward.

As illustrated in FIG. 11B, the first coupling rib 41c extends from the rear surface of the first sensing housing 41 toward the rearward direction of the first sensing housing 41. The number of the first coupling ribs 41c is not particularly limited. For example, as illustrated in FIG. 11B, a plurality of first coupling ribs 41c may be formed at predetermined intervals.

This first engagement rib 41c is equal to the thickness of the first engagement portion 34 from the first housing pedestal 41b or is smaller than the thickness of the first engagement portion 34, as shown in FIG. 11B. It is formed so as to be spaced apart by a small interval.

As shown in FIGS. 11A and 11B, the first wire guide groove 41d is recessed in the lower end of the first sensing housing 41 to face the wire insertion groove 38 of the cooling plate 30. As shown in FIG. 12, the first wire guide groove 41d guides the first sensing wire 45a coupled and connected to the first receptacle 41e toward the wire insertion groove 38.

As shown in FIG. 12, the first receptacle 41e is mounted inside the first connecting hole 41a to be engaged and connected to the first connecting pin 66a inserted into the first connecting hole 41a. Is installed. The first receptacle 41e preferably has a clip structure that can be clipped to the first connecting pin 66a, but is not limited thereto.

The first receptacle 41e is provided with the same number as the first connection holes 41a. For example, in the case where a pair of first connection holes 41a are provided, a pair of first receptacles 41e may be provided, one for each first connection hole 41a. The first receptacle 41e may be electrically connected to the first electrode lead 16 of the secondary batteries 12 through the first bus bar 64 to sense the voltage of the secondary batteries 12. .

12, the end portion of the first coupling part 34 is fitted into the gap between the first housing pedestal 41b and the first coupling ribs 41c as shown in FIG. 12. The first coupling part 34 is coupled to a predetermined coupling position. The predetermined coupling position means that when the cooling plate 30 integrally coupled with the first sensing housing 41 is coupled to the bottom surface of the cartridge stack 10, the first connection pin 66a is connected to the first connection hole ( It refers to a position that can be inserted into 41a) and coupled and connected to the first receptacle 41e. Meanwhile, the first sensing housing 41 has been described as being fitted to the first coupling part 34, but is not limited thereto. That is, the first sensing housing 41 may be coupled to the first coupling part 34 by various coupling methods such as screw coupling and hook coupling.

 FIG. 13A is a front perspective view of the second sensing housing illustrated in FIG. 7, FIG. 13B is a rear perspective view of the second sensing housing illustrated in FIG. 7, and FIG. 14 is a partially enlarged view of region D of FIG. 10.

 The second sensing housing 43 includes a second connecting hole 43a into which the second connecting pin 76a is inserted, a connector fitting groove 43b to which the sensing connector 47 is fitted, and a second sensing housing ( A second housing pedestal 43c for supporting 43, a second coupling rib 43d for coupling the second coupling portion 36 of the cooling plate 30 and the second sensing housing 43, and a sensing wire ( The inside of the second connecting hole 43a to be connected to the second wire guide groove 43e for guiding the 45 toward the sensing connector 52 and the second connecting pin 76a inserted into the second connecting hole 43a. And a second receptacle 43f mounted to it.

As shown in FIG. 13A, the second connection hole 43a is drilled to penetrate the second sensing housing 43 in the vertical direction. The second connecting hole 43a has a predetermined shape such that the second connecting pin 76a and the second receptacle 43f are inserted and fixed, respectively.

The second connection holes 43a have the same number as the second connection tabs 76. For example, when one second connection tab 76 is provided, as shown in FIG. 13A, one second connection hole 43a may be formed correspondingly.

As shown in FIG. 13A, the connector fitting groove 43b is recessed at a predetermined engagement position on the front surface of the second sensing housing 43 so as to have a shape corresponding to the sensing connector 47. As shown in FIG. 14, the predetermined coupling position includes a sensing connector 47 fitted into the connector fitting groove 43b when the cooling plate 30 is coupled to the bottom surface of the cartridge stack 10. 2 refers to a position that is fastened to and coupled with the sub connector 52 coupled to the ICB housing 70.

As shown in FIG. 13B, the second housing pedestal 43c has a rear side direction of the second sensing housing 43 at the lower end of the second sensing housing 43 so as to support the second sensing housing 43. Extending toward.

As shown in FIG. 13B, the second coupling rib 43d extends from the rear surface of the second sensing housing 43 toward the rear side of the second sensing housing 43. The number of formation of the second coupling ribs 43d is not particularly limited. For example, as illustrated in FIG. 13B, a plurality of second coupling ribs 43d may be formed at predetermined intervals.

The second coupling rib 43d is formed to be spaced apart from the second housing pedestal 43c by an interval equal to the thickness of the second coupling portion 36 or slightly smaller than the thickness of the second coupling portion 36. .

As shown in FIGS. 13A and 13B, the second wire guide groove 43e is recessed in the lower end of the second sensing housing 43 to face the wire insertion groove 38 of the cooling plate 30. As shown in FIG. 14, the second wire guide groove 43e guides the first sensing wire 45a drawn from the wire insertion groove 38 toward the sensing connector 47.

As shown in FIG. 14, the second receptacle 43f is mounted inside the second connection hole 43a to be engaged and connected to the second connection pin 76a inserted into the second connection hole 43a. Is installed. The second receptacle 43f preferably has a clip structure that can be clipped to the second connecting pin 76a, but is not limited thereto.

The second receptacle 43f is provided with the same number as the second connection holes 43a. For example, when one second connection hole 43a is provided, one second receptacle 43f may be provided and installed in the second connection hole 43a. The second receptacle 43f may be electrically connected to the second electrode lead 18 of the secondary batteries 12 through the second bus bar 74 to sense the voltage of the secondary batteries 12. .

As shown in FIG. 14, the second sensing housing 43 has an end portion of the second coupling portion 36 fitted into a gap between the second housing pedestal 43c and the second coupling rib 43d. , Is coupled to a predetermined engagement position of the second coupling portion 36. The predetermined coupling position means that the second connecting pin 76a is connected to the bottom surface of the cartridge stack 10 when the cooling plate 30 integrally coupled with the second sensing housing 43 is connected to the second connection hole ( It refers to a position that can be inserted into 43a) and coupled and connected to the second receptacle 43f.

Meanwhile, the second sensing housing 43 is described as being fitted to the second coupling part 36, but is not limited thereto. That is, the second sensing housing 43 may be coupled to the second coupling part 36 by various coupling methods such as screw coupling and hook coupling.

The sensing wire 45 is provided to electrically connect each receptacle with the sensing connector 47. To this end, the sensing wire 45 electrically connects the first sensing wire 45a for electrically connecting the first receptacle 41e and the sensing connector 47, and the second receptacle 43f and the sensing connector 47. It may include a second sensing wire 45b for connecting.

As shown in FIG. 7, one end of the first sensing wire 45a is coupled to and connected to the first receptacle 41e, and the other end of the first sensing wire 45a is coupled to and connected to the sensing connector 47. And the sensing connector 47 to be electrically connected. To this end, the first sensing wire 45a in FIG. 7 has one end drawn out from the wire insertion groove 38 toward the front side of the cartridge stack 10 and the other end of the cartridge stack from the wire insertion groove 38. It is inserted into the wire insertion groove 38 so as to be drawn out in the rearward direction of the (10).

The first sensing wire 45a is provided with the same number as the first receptacle 41e. For example, when a pair of first receptacles 41e are provided, correspondingly, a pair of first sensing wires 45a are provided to electrically connect each of the first receptacles 41e and the sensing connector 47. Can connect

As shown in FIG. 7, one end of the second sensing wire 45b is connected to the second receptacle 43f and the other end of the second sensing wire 45b is connected to the second receptacle 43f and the sensing connector. (47) is electrically connected.

The second sensing wire 45b is provided with the same number as the second receptacle 43f. For example, when one second receptacle 43f is provided, one second sensing wire 45b may be provided.

FIG. 15 is a rear view of the battery module shown in FIG. 9.

As illustrated in FIG. 15, the sensing connector 47 is coupled and connected to each sensing wire 45. The sensing connector 47 is preferably composed of a male connector which can be fastened and connected to each sensing wire 45 individually, but is not limited thereto.

The sensing connector 47 is inserted into and fitted into the connector fitting groove 43b of the second sensing housing 43 to be coupled to the second sensing housing 43. However, the present invention is not limited thereto, and the sensing connector 47 may be coupled to the second sensing housing 43 by various coupling methods such as screw coupling and hook coupling. This sensing connector 47 is fastened and connected to the sub connector 52 when the cooling plate 30 is coupled to the lower surface of the cartridge stack 10, as shown in FIG. 15.

Next, the connecting connector assembly 50 is a member for electrically connecting with the measurement circuit external to the sensing connector assembly 40.

The structure of the connecting connector assembly 50 is not particularly limited. For example, as shown in FIG. 15, the connecting connector assembly 50 may include a sub connector 52 that is fastened and connected to the sensing connector 47, and a circuit connector (not shown) included in an external measurement circuit. And a main connector 54 fastened and connected thereto, and a connection wire 56 electrically connecting the sub connector 52 and the main connector 54.

Sub connector 52 is preferably composed of a female connector that can be fastened and connected to the sensing connector 47, but is not limited thereto. This sub connector 52 is coupled to a predetermined engagement position of the outer surface of the second ICB housing 70, as shown in FIG. 15. As shown in FIG. 15, the predetermined coupling position means that when the cooling plate 30 integrally coupled with the sensing connector assembly 40 is coupled to the bottom surface of the cartridge stack 10, This refers to a position at which the sub connector 52 is fastened and connected. The method of coupling the sub connector 52 and the second ICB housing 70 is not particularly limited, and the sub connector 52 and the second ICB housing 70 may be coupled using various coupling methods such as fitting coupling and hook coupling. have.

The main connector 54 is preferably constituted by a female connector which can be fastened and connected to the circuit connector of the measurement circuit, but is not limited thereto. 15, the main connector 54 is coupled to a predetermined engagement position of the outer surface of the second ICB housing 70 so as to be spaced apart from the sub connector 52 by a predetermined distance. The coupling method of the main connector 54 and the second ICB housing 70 is not particularly limited, and the main connector 54 and the second ICB housing 70 may be coupled using various coupling methods such as fitting coupling and hook coupling. have.

As shown in FIG. 15, the main connector 54 is electrically connected to the sub connector 52 by a connection wire 56, and is fastened and connected to a circuit connector included in an external measurement circuit. Then, the measurement circuit may receive the voltage sensed by the receptacle through the main connector 54 and measure the voltage of the secondary batteries 12.

As shown in FIG. 15, the connecting wire 56 has one end coupled and connected to the sub connector 52 and the other end coupled and connected to the main connector 54, so that the sub connector 52 and the main connector ( 54) are electrically connected.

In the battery module 1, the connection pins 66a and 76a of the bus bars 64 and 74 are inserted into the connection holes 41a and 43a of the sensing housings 41 and 43 so that the sensing housing ( The secondary batteries 12 and the main connector 54 are connected by engaging with the receptacles 41e and 43f of the 41 and 43 and engaging the sensing connector 47 and the sub connector 52. However, the bus bars 64 and 74 and the sub connector 52 are mounted on the outer surface of the ICB housing 20, and the sensing housings 41 and 43 are coupled to the ends of the cooling plate 30, and the sensing connectors are provided. 47 is coupled to the outer surface of the sensing housing 41, 43. That is, in the battery module 1, the connection pins 66a and 76a of the bus bars 64 and 74 are inserted into the connection holes 41a and 43a of the sensing housings 41 and 43, and The aspect in which the connector 47 and the sub connector 52 are fastened is exposed to the outside. Therefore, the battery module 1 senses whether or not the connecting pins 66a and 76a of the bus bars 64 and 74 are inserted into the connecting holes 41a and 43a of the sensing housings 41 and 43. If only externally checking whether the connector 47 and the sub connector 52 are fastened, it is possible to check whether the members provided between the secondary batteries 12 and the main connector 54 are connected. You can save time.

In addition, the battery module 1 is coupled to the cooling plate 30 and the cartridge stack 10 through a single process of coupling the cooling plate 30 to the cartridge stack 10, and the secondary battery 12. It has a structure capable of simultaneously performing the connection operation of the sensing member for sensing the voltage of (). Therefore, the battery module 1 can reduce the time required for the work, as compared with the case of separately performing the joining and connecting work of the above-mentioned members.

Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto and will be described below by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the claims.

1: battery module
10: cartridge stack
12: secondary battery
14: cartridge
16: electrode lead
20: ICB housing
30: cooling plate
40: sensing connector assembly
41: first sensing housing
43: second sensing housing
45: sensing wire
47: sensing connector
50: connecting connector assembly
52: sub connector
54: main connector
56: connecting wire
60: first ICB housing
62: first lead hole
64: first bus bar
66: first connection tab
70: second ICB housing
72: second lead hole
74: second busbar
76: second connection tab

Claims (8)

A cartridge stack including a plurality of secondary batteries each having an electrode lead, and a plurality of cartridges each accommodating at least one secondary battery of the secondary batteries and stacked in multiple stages;
An ICB housing having a connection pin protruding in a predetermined connection direction, the bus bar being connected to the electrode lead, and coupled to one surface of the cartridge stack; And
A sensing connector assembly connected to the connection pin to sense a voltage of the secondary batteries;
The sensing connector assembly,
And a sensing housing having a connection hole into which the connection pin is inserted and a receptacle mounted inside the connection hole to be connected to the connection pin inserted into the connection hole.
The ICB housing further includes a lead hole bored to allow an end of the electrode lead to pass therethrough,
The bus bar is coupled to the outer surface of the ICB housing,
The electrode lead has a connection portion formed by bending an end portion projecting out of the ICB housing through the lead hole by a predetermined angle and connected to the bus bar at a predetermined connection point,
Further comprising a cooling plate coupled to the other surface of the cartridge stack,
The connecting pin protrudes toward the cooling plate,
The sensing housing is coupled to a predetermined engagement position of the cooling plate such that the connecting pin is inserted into the connection hole and connected to the receptacle when the cooling plate is coupled to the cartridge stack,
The sensing connector assembly,
Sensing wires coupled and connected to the receptacle; And
Further comprising a sensing connector coupled and connected to the sensing wire,
And a connection connector assembly electrically connecting the sensing connector assembly to an external measurement circuit capable of measuring a voltage of the secondary batteries.
The connecting connector assembly,
A sub connector fastened and connected to the sensing connector;
A main connector fastened and connected to a circuit connector of the measurement circuit; And
A connection wire electrically connecting the sub connector and the main connector;
And a side in which the connection pin is inserted into the connection hole is exposed to the outside, and a side in which the sensing connector and the sub connector are coupled to the outside is exposed to the outside. delete delete delete delete The method of claim 1,
The sensing connector is coupled to the sensing housing,
And the sub connector is fixed to a predetermined fixed position of the ICB housing so as to be engaged with the sensing connector when the cooling plate is coupled to the cartridge stack. A battery pack comprising the battery module according to claim 1. An automobile comprising the battery pack according to claim 7.

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