KR20180025642A - Connecting board and battery pack including the same - Google Patents

Abstract

The present invention relates to a connecting board and a battery pack including the same. According to one embodiment of the present invention, the connecting board is mounted on a battery pack including a plurality of battery modules, one master BMS and a plurality of slave BMSs. The connecting board comprises: a plate formed with a first conductive pattern and supporting the master BMS and the slave BMSs; a plurality of sensing connectors disposed on the plate and connected to the battery modules respectively through a plurality of voltage sensing lines; a plurality of slave connectors disposed on the plate, coupled to the slave BMSs, respectively, and each including first to third slave ports; and a master connector disposed on the plate, coupled to the master BMS, and including a master port connected to a communications port of the master BMS. A first slave port of each of the slave connectors is connected to any one of the sensing connectors through the first conductive pattern. A sensing port, a first communications port and a second communications port of each of the slave BMSs are connected to first to third slave ports of any one of the slave connectors, respectively. Each of the slave connectors includes a filter for filtering signals.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a connecting board,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a connecting board and a battery pack including the same, which can improve the space utilization inside the battery pack and perform signal filtering.

2. Description of the Related Art In recent years, demand for portable electronic products such as notebook computers, video cameras, and portable telephones has rapidly increased, and electric vehicles, storage batteries for energy storage, robots, and satellites have been developed in earnest. Researches are being actively conducted.

Among the commercially available batteries, there are nickel cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among them, lithium batteries have almost no memory effect compared with nickel-based batteries, It is very popular because it has very low energy density.

The minimum unit of the battery may be referred to as a battery cell, and a plurality of battery cells connected in series may constitute a battery module. In addition, a plurality of battery modules may be connected in series or in parallel to constitute a battery pack.

BACKGROUND ART [0002] A battery pack mounted on an electric vehicle or the like generally includes a plurality of battery modules connected to each other in series or in parallel. The battery pack includes at least one battery management system (hereinafter, referred to as 'BMS') that monitors the state of each battery module included therein and performs a control operation corresponding to the monitored state.

Since each battery module included in the battery pack includes a plurality of battery cells, there is a limitation in monitoring the state of all the battery cells included in the battery pack using a single BMS. Recently, a BMS is installed for each of a predetermined number of battery modules included in a battery pack. One of the plurality of BMSs is set as a master BMS, and the remaining BMSs are set as slave BMSs, Is widely used.

FIG. 1 shows a general layout of a battery pack 10 mounted on an electric vehicle 1, and FIG. 2 schematically shows a battery pack shown in FIG. 1 viewed from above.

Referring to Figs. 1 and 2, the battery pack 10 may be disposed under the electric vehicle 1. At this time, in order to secure a spacious room, the height of the battery pack 10 is limited. Accordingly, the battery pack 10 is designed to have a structure in which one battery module 100 included therein is horizontally dispersed and disposed along the ground instead of the stack structure in which the other battery module 100 is disposed on the other battery module 100 .

Each of the slave BMSs 200 installed for each predetermined number of battery modules 100 is connected to the master BMS 300 through a communication network such as a CAN (Control Area Network) And transmits the data to the master BMS 300. The master BMS 300 controls the states of the battery cells included in the battery module of the master BMS 300 according to a control signal provided from the master BMS 300. [

At this time, as shown in FIG. 2, when the slave BMSs 200 are distributed and arranged for each of the regions corresponding to the battery modules 100 to which the slave BMSs 200 are attached, the utilization of the inner space of the battery pack 10 is reduced none.

For example, when the slave BMS 200 is disposed between the battery modules 100 as shown in FIG. 2, due to the size of the slave BMS 200 itself, 100) can not be disposed and the area to be wasted is minimized.

SUMMARY OF THE INVENTION The present invention is conceived to solve the problems described above, and it is an object of the present invention to provide a BMS that monitors the state of a battery module included in a battery pack, It is intended to provide a board.

Another object of the present invention is to provide a connecting board for forming a conductive pattern for electrical connection between a battery module and a BMS and performing signal filtering between the master BMS and the slave BMS.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It is also to be understood that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations thereof.

Various embodiments of the present invention for achieving the above object are as follows.

In a connecting board according to an aspect of the present invention, a connecting board mounted to a battery pack including a plurality of battery modules, a master BMS, and a plurality of slave BMSs is formed with a first conductive pattern, A plate for supporting a plurality of slave BMSs; A plurality of sensing connectors disposed on the plate and individually connected to the respective battery modules via a plurality of voltage sensing lines; A plurality of slave connectors disposed on the plate and individually coupled to the respective slave BMSs and including first to third slave ports; And a master connector disposed on the plate and coupled to the master BMS, the master connector including a master port connected to a communication port of the master BMS, wherein the first slave port of each slave connector has a first master port Wherein the sensing port, the first communication port, and the second communication port of each slave BMS are connected to any one of the plurality of sensing connectors via a conductive pattern, And are individually connected to the slave ports. In addition, each of the slave connectors includes a filter for filtering a signal.

According to another aspect of the present invention, there is provided a battery pack comprising: a plurality of battery modules each including a plurality of battery cells; A plurality of slave BMSs for individually monitoring the states of the plurality of battery modules, respectively; A master BMS for collecting data monitored by the plurality of slave BMSs and individually controlling the plurality of slave BMSs based on the collected data; And a connecting board for providing a communication interface between the master BMS and the plurality of slave BMSs, wherein the connecting board comprises: a plate on which a first conductive pattern is formed and which supports the master BMS and the plurality of slave BMSs; A plurality of sensing connectors disposed on the plate and individually connected to the respective battery modules via a plurality of voltage sensing lines; A plurality of slave connectors disposed on the plate and individually coupled to each of the slave BMSs and including first to third slave ports; And a master connector disposed on the plate and coupled to the master BMS and including a master port connected to a communication port of the master BMS.

Wherein the first slave port of each slave connector is connected to one of the plurality of sensing connectors via the first conductive pattern and the sensing port, the first communication port, and the second communication port of each slave BMS , And are individually connected to the first to third slave ports of any one of the plurality of slave connectors, and each of the slave connectors includes a filter for filtering communication signals.

The details of other embodiments are included in the detailed description and drawings.

According to an embodiment of the present invention, BMSs that individually monitor the states of the battery modules included in the battery pack are integrally mounted on a single connecting board disposed in a designated area inside the battery pack, The utilization can be increased.

In addition, since the filter for performing signal filtering between the slave BMS and the master BMS is mounted on the connecting board, it is possible to reduce the number of filters and to exhibit flexibility with respect to the design change of the battery module.

In addition, since a plurality of battery modules and a plurality of BMSs are mutually electrically connected through a conductive pattern formed on a single connecting board, it is possible to solve the problem of changing the design of the BMS for each battery pack.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention. And should not be construed as limiting.
1 shows a general arrangement of a battery pack mounted on an electric vehicle.
FIG. 2 is a schematic view of the battery pack shown in FIG. 1 viewed from above.
3 is a plan view schematically showing a battery pack according to an embodiment of the present invention.
FIG. 4 is an enlarged view of the connecting board shown in FIG.
FIG. 5 shows a state in which both the slave BMS and the master BMS are separated from the connecting board shown in FIG.
Fig. 6 schematically shows a slave BMS and a master BMS configured to be connectable to the connecting board shown in Fig. 4. Fig.
7 schematically shows the slave connector and the master connector shown in Fig.
8 and 9 show the connection relationship between the battery module of the battery pack and the slave BMS when the connecting board is not used.
FIG. 10 is a view showing a connection relationship between any one of the battery modules of the battery pack shown in FIG. 3 and a sensing connector.
11 is an enlarged view of the first area shown in FIG.
12 is a view showing an incision along the line XX 'in FIG.
FIG. 13 is an enlarged view of the second region shown in FIG.
FIG. 14 is a view showing an incision along the line YY 'in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise. In addition, the term " control unit " as described in the specification means a unit for processing at least one function or operation, and may be implemented by hardware or software, or a combination of hardware and software.

In addition, throughout the specification, when a portion is referred to as being "connected" to another portion, it is not necessarily the case that it is "directly connected", but also "indirectly connected" .

Hereinafter, in the case where there are a plurality of the same kind of configurations, in order to distinguish one configuration from the other, "-n" or "n" is referred to in the reference numerals of the respective configurations. For example, when there are two configurations of 'X', 'X-1' or 'X1' is assigned to any one of them and 'X-2' or 'X2' .

FIG. 3 is a plan view schematically showing a battery pack 20 according to an embodiment of the present invention, FIG. 4 is an enlarged view of the connecting board 400 shown in FIG. 3, and FIG. The slave BMS 200 and the master BMS 300 are separated from the connecting board 400 shown in FIG.

3 to 5, the battery pack 20 includes a case 21, a plurality of battery modules 100-1 to 100-9, a master BMS 300, a plurality of slave BMSs 200-1 to 200- -9 and a connecting board 400. For the sake of understanding, it is assumed that the case 21 shown in Fig. 3 has the same shape and size as the case 11 shown in Fig.

The case 21 defines a space for accommodating the plurality of battery modules 100-1 to 100-9, the master BMS 300, the plurality of slave BMSs 200, and the connecting board 400. The case 21 may be configured to at least partially separate the structures accommodated in the inner space from the outside.

At least a part of the case 21 may be made of a thermally conductive material so that the heat emitted from the battery module 100 may be discharged to the outside of the case 21. [ Of course, a cooling fan or the like for discharging heat inside the battery pack 20 may be additionally installed inside the case 21. [

Each slave BMS 200 is electrically connected to each of the different battery modules 100 to individually monitor the states of the connected battery modules 100 and provide the monitored data to the master BMS 300 through a communication interface do. The slave BMS 200 converts or encodes the monitored data into a signal used in the communication interface and provides it to the master BMS 300. The signal generated by the slave BMS 200 is filtered by the filter 434 included in the connecting board 400 and is provided to the master BMS 300.

The master BMS 300 collects the signals generated by the plurality of slave BMSs 200-1 to 200-9 and supplies the slave BMSs 200-1 to 200-9 included in the battery pack 20, 200-9, and outputs a signal for controlling each of the slave BMSs 200-1 to 200-9 individually. The master BMS 300 may be connected to communicate with an external device (e.g., a vehicle ECU) through a communication port provided therein.

3, the plurality of slave BMSs 200-1 to 200-9 are connected to the battery modules 100-1 to 200-9 in comparison with the battery pack 10 shown in FIG. There is a major difference in that they are integrally mounted on one connecting board 400 rather than being distributed in the regions corresponding to the connecting boards 100-9.

Accordingly, the distance between the battery modules 100-1 to 100-9 arranged in a predetermined form can be relatively narrowed, and the area of the wasted area D is significantly reduced as compared with FIG. 2, The battery module 100 may be disposed in the case 21.

In contrast to the case where the maximum number of battery modules 100-1 to 100-8 can be accommodated in the case 11 shown in FIG. 2, the case 21 shown in FIG. ~ 100-9) can be accommodated.

At this time, the plurality of battery modules 100-1 to 100-9 may be arranged in a predetermined area of the case 21 in the form of a 3X3 array as shown in the figure. Although not shown, the battery modules 100-1 through 100-9 may be electrically connected in series through a power line.

4 and 5, the connecting board 400 includes a plate 410, a plurality of sensing connectors CA-1 to CA-9, a plurality of slave connectors CB-1 to CB-9, (CC). The connecting board 400 may be disposed in an area of the internal space of the case 21 that is not overlapped with the area where the battery modules 100-1 to 100-9 are disposed.

The plate 410 basically plays a role of supporting the plurality of slave BMSs 200-1 to 200-9 and the master BMS 300. Specifically, the plurality of slave BMSs 200-1 to 200-9 and the master BMS 300 may be physically fixed to the connecting board 400. [ A plurality of conductive patterns may be formed in a portion of the plate 410, and at least a portion of the conductive pattern may be formed of an insulating material.

A plurality of sensing connectors (CA-1 to CA-9) are disposed on the plate (410). Specifically, the plurality of sensing connectors CA-1 to CA-9 may be arranged in an area including a part of the rim of the plate 410. [

At this time, in order to facilitate the electrical connection between the sensing connectors CA-1 to CA-9 and the battery modules 100-1 to 100-9, the sensing connectors CA-1 to CA- -1 to CB-9 and the master connector CC in the battery module 100-1 to 100-9.

The number of the sensing connectors CA-1 to CA-9 is equal to or greater than the number of the battery modules 100-1 to 100-9, and each battery module 100 is connected to a plurality of voltage sensing lines And can be individually connected to one sensing connector CA. For example, the battery module 100-1 may be connected to a sensing connector CA-1 different from the sensing connector CA-2 to which the other battery module 100-2 is connected.

A plurality of slave connectors CB-1 to CB-9 are disposed on the plate 410. [ The plurality of slave connectors CB-1 to CB-9 have a structure that can be individually coupled to each slave BMS 200. [ Each slave connector CB can provide a communication path to the slave BMS 200 coupled thereto with the sensing connector CA, another slave connector and the master connector CC.

The master connector (CC) is disposed on the plate (410). The master connector (CC) has a structure that can be coupled to the master BMS (300). The master connector CC may provide a communication path to the slave connector CB and the external device to the master BMS 300 coupled thereto.

At this time, the master connector CC may be disposed further away from the battery module 100 than the slave connector CB. In other words, the slave connector CB can be disposed closer to the battery module 100 than the master connector CC.

According to an embodiment, the connecting board 400 may include a fastening portion. The plurality of slave BMSs 200 and the master BMSs 300 can be stably fixed to the plate 410 through the fastening portions. For example, the fastening portion may include a plurality of mounting holes 411, and each slave BMS 200 or master BMS 300 may be fixedly coupled to at least one mounting hole 411 through bolts and nuts. Of course, each slave BMS 200 or master BMS 300 may be fixed to the plate 410 through various means such as an adhesive instead of the mounting hole 411.

According to an embodiment, at least one of the sensing connectors CA-1 to CA-9, slave connectors CB-1 to CB-9 and master connector CC is configured to be removable from the plate 410 . Accordingly, when only the plate 410 is required to be replaced at the connecting board 400, the sensing connectors CA-1 to CA-9, the slave connectors CB-1 to CB-9, Can be detached from the existing plate 410, and then can be attached to the new plate 410 and used again.

FIG. 6 schematically shows a slave BMS 200 and a master BMS 300 configured to be coupled to the connecting board 400 shown in FIG. 4. FIG. 7 schematically shows a slave connector CB and a master Connector (CC).

Referring to FIG. 6, the slave BMS 200 may include a substrate 210 and an integrated circuit 220.

The substrate 210 is configured to support the integrated circuit 220. For example, the integrated circuit 220 may be configured to have a structure that can be seated on one side of the substrate 210.

The integrated circuit 220 is physically coupled to the substrate 210 and is fixedly supported by the substrate 210. One or more integrated circuits 220 may be provided for each slave BMS 200, and one integrated circuit 220 is provided for each slave BMS 200 for convenience of description in FIG.

The integrated circuit 220 may include a sensing port 221, a first communication port 222, and a second communication port 223. The sensing port 221 may include a plurality of terminals. As shown in the figure, when six terminals S1 to S6 are included in the sensing port 221, the slave BMS 200 can measure the voltages at both ends of up to five battery cells individually. Hereinafter, the voltage across each battery cell will be referred to as a 'cell voltage'.

At this time, a plurality of wirings, which are individually connected to at least one of the sensing port 221, the first communication port 222, and the second communication port 223 included in the integrated circuit 220, are formed on the substrate 210 . The wiring of the substrate 210 may be formed by a printing method.

The terminals S included in the sensing port 221 are electrically connected to each battery cell 101 of the battery module 100 through a voltage sensing line. That is, one end of each voltage sensing line is connected to the positive electrode or the negative electrode of the battery cell 101, and the other end is connected to one of the terminals of the sensing port 221. At this time, one voltage sensing line may be connected to a common node of two adjacent battery cells 101.

The master BMS 300 may include a substrate 310 and an integrated circuit 320. The integrated circuit 320 may include a first communication port 321 and a second communication port 322.

Meanwhile, each slave BMS 200 may refer to a plurality of BMSs included in the battery pack 20 other than the BMS designated as the master BMS 300. In this case, the master BMS 300 may be implemented to have the same circuit structure as the slave BMS 200, except that the sensing port 221 may be omitted.

Referring to FIG. 7, each slave connector CB includes first to third slave ports 431 to 433 and a filter 434.

The first communication port 222 and the second communication port 223 of the slave BMS 200 are connected to the first to third communication ports 222 and 223 in a state where the slave BMS 200 is coupled to the slave connector CB. And are individually connected to the slave ports 431 to 433. That is, the sensing port 221 is connected to the first slave port 431, the first communication port 222 is connected to the second slave port 432, the second communication port 223 is connected to the third slave port 431, (433).

The first slave port 431 is formed with a plurality of terminals T1 to T6. The number of the terminals S1 to S6 formed in the sensing port 221 may be the same as the number of the terminals T1 to T6 formed in the first slave port 431. In this case, the terminals S1 to S6 of the sensing port 221 and the terminals T1 to T6 of the first slave port 431 can be connected one to one.

The filter 434 functions to filter the signal generated on the communication interface. The signal may be a digital pulse and the filter 434 may be coupled to the communication interface if the signal (e.g., a pulse) originating on the communication interface generates a voltage above a first threshold or generates a voltage below a second threshold The signal can be adjusted to a voltage within the normal range to perform signal filtering. For example, if the voltage of the signal is above a first threshold, the filter 434 lowers the voltage of the signal to a normal range, and if the voltage of the signal is below a second threshold, The voltage of the signal is raised. By this filter 434, the signal generated on the communication path is normally transmitted to the master BMS 300 without distortion.

The filter 434 may comprise one or more circuit elements for signal filtering. The filter 434 is connected to the slave connector CB between the filter 434 and the second slave port 432 so that the filter 434 is electrically connected to the second slave port 432 and the third slave port 434, A conductive pattern may be formed and a conductive pattern may be formed between the filter 434 and the third slave port 433. [

The master connector (CC) includes first and second master ports (441, 442). The first communication port 321 and the second communication port 322 of the master BMS 300 are connected to the first master port 441 and the second communication port 322 respectively in the state where the master BMS 300 is coupled to the master connector CC. And are individually connected to the master port 442.

8 and 9 show the connection relationship between the battery module 100 and the slave BMS 200 when the connecting board 400 is not used.

FIG. 8 is a diagram illustrating a configuration in which a battery module 100a including four battery cells 101-1 to 100-4 connected in series to a slave BMS 200 configured to individually monitor cell voltages of up to five cells .

Each battery cell 101 included in the battery module 100a is connected to the sensing port 221 of the slave BMS 200 through a plurality of voltage sensing lines LS-1 to LS- do. Specifically, the anode and the cathode of each battery cell 101 are connected to the slave BMS 200 through different voltage sensing lines. At this time, only one voltage sensing line (LS) may be connected between two adjacent battery cells (101). For example, only one voltage sensing line LS-2 can be connected to the common node between the anode of the battery cell 101-1 and the cathode of the battery cell 101-2.

In order to connect the other end of each voltage sensing line LS to the sensing port 221 formed in the integrated circuit 220 of the slave BMS 200, A pattern must be formed. That is, the voltage sensing lines LS-1 to LS-5 are individually connected to the terminals S1 to S6 of the sensing port 221 through the wires K1 to K6.

At this time, since only the terminals S1 to S5 can receive the voltage signals of the battery cells 101-1 to 100-4, the remaining terminal S6 is connected to the voltage sensing And may be commonly connected to the line LS-5. Alternatively, the wiring K6 may be omitted, and in this case, the terminal S6 may be held in an open state not connected to any voltage sensing lines.

9 can be referred to for describing the problem when the battery module 100a is replaced with the battery module 100b. The battery module 100b has a form in which a battery cell 101-5 is added to the battery module 100a. 8 and 9, integrated circuit 220 may be used to connect terminal S6 to voltage sensing line LS-6, although cell voltages of up to five battery cells 101 may be individually measured. There is a problem that it is impossible to measure the cell voltage of the battery cell 101-6 because the essential wiring is not formed on the substrate 210. [ In other words, since the wiring lines K1 to K6 formed on the substrate 210 can be connected only to the five voltage sensing lines LS-1 to LS-5, the terminal S6 included in the sensing port 221 is connected to the voltage The connection with the sensing line LS-6 is impossible.

That is, as shown in FIG. 8, the battery module 100a including the four battery cells 101-1 to 101-4 includes five battery cells 101-1 to 101-5 as shown in FIG. 9, There is a problem that the design change of the slave BMS 200 is inevitable when the battery module 100b is replaced with the battery module 100b. This problem occurs because the wiring lines K1 to K6 for electrical connection between the slave BMS 200 and the voltage sensing line LS are formed directly on the substrate 210 of the slave BMS 200. [

10 is a view showing a connection relationship between any one battery module 100 of the battery pack 20 shown in FIG. 3 and a sensing connector CA. For convenience of explanation, the connection relationship between the battery module 101-1 and the sensing connector CA-1 will be mainly described.

Referring to FIG. 10, the battery module 100-1 may include four battery cells 101-1 to 101-4 connected in series. In this case, the four battery cells 101-1 to 101-4 can be connected to the sensing connector CA-1 via the five voltage sensing lines LS-1 to LS-5.

10 shows only the voltage sensing lines LS-1 to LS-5 for connecting the battery module 101-1 and the sensing connector CA-1. However, the remaining battery modules 101-2 to 101-9, It is apparent to those skilled in the art that there are voltage sensing lines for connecting the sensing connectors CA-2 to CA-9 individually.

In this case, a total of 45 voltage sensing lines for the complete connection between the nine battery modules 100-1 to 100-9 and the nine sensing connectors CA-1 to CA-9 are provided in the battery pack 20 .

FIG. 11 is a view showing an enlarged view of the first area AREA 1 shown in FIG. 10, and FIG. 12 is a view showing an incision along the line X-X 'in FIG.

A conductive pattern for connection between the sensing connector CA and the first slave port 431 is formed on the plate 410. Such a conductive pattern includes a plurality of wiring sets. Each wiring assembly is connected between any one sensing connector CA and any one of the first slave ports 431. That is, each sensing connector CA is individually connected to each of the slave connectors CB through a set of wires.

10 to 12, a wiring set P1 for connecting the sensing connector CA-1 to the first slave port 431 of the slave connector CB-1 can be identified.

The wiring set P1 includes a plurality of wirings W1 to W5. The wirings W1 to W5 are connected to the voltage sensing lines LS-1 to LS-5 connected to the sensing connector CA-1 via the first slave port 431 of the slave connector CB- Terminals T1 to T6 individually. For example, the voltage sensing line LS-3 may be connected to the terminal T3 via one wiring W3 to the wiring set P1.

At this time, at least one of the wirings included in the wiring set P1 may be branched into two or more and connected to different terminals of the first slave port 431. [ For example, as shown in the figure, the wiring W5 may be branched into two strands W5a and W5b, and the two strands W5a and W5b may be connected to the two terminals T5 and T6, respectively. Since the two terminals T5 and T6 are connected to one voltage sensing line LS-5, it is obvious to those skilled in the art that the voltage signals input to the two terminals T5 and T6 may be the same .

Of course, the wiring W5 may not be branched at the plate 410, and in this case, at least one of the terminals of the first slave port 431, T6, may not be connected to any wiring.

11 and 12, a conductive pattern for connecting the sensing port 221 of the integrated circuit 220 of the slave BMS 200 to the voltage sensing line is formed on the plate 210, not the substrate 210 of the slave BMS 200, So that the slave BMS 200 can be used in a wider range. When the conductive pattern including the wiring set P1 is directly formed on the substrate 210 of the slave BMS 200, the number of the battery cells 101 included in the battery module 100 is changed The slave BMS 200 must be redesigned every time. In contrast, when the conductive pattern including the wiring set P1 is formed on the plate 410 of the connecting board 400, even if the number of the battery cells 101 included in the battery module 100 is changed, Only the plate 410 needs to be replaced without redesigning the slave BMS 200, so that the slave BMS 200 having the same circuit structure can be mounted on battery packs of various specifications and used.

FIG. 13 is an enlarged view of the second area AREA 2 shown in FIG. 10, and FIG. 14 is a view showing an incision along the line Y-Y 'in FIG.

The plate 410 may be provided with a conductive pattern P2 for forming a communication interface between the plurality of slave connectors CB-1 to CB-9 and the master connector CC. For example, the communication interface formed through the conductive pattern P2 may include a daisy chain. The third slave port 433 of each slave connector CB is connected to at least one second slave port 432 of the remaining slave connectors CB via the conductive pattern or the first master of the master connector CC Port 441 as shown in FIG. The slave connectors CB-1 to CB-9 also include a filter 434 for filtering signals generated at the communication interface and the filter 434 is connected between the slave connectors CB-1 to CB- Filters the generated communication signal or filters signals generated between the slave connectors CB-1 to CB-9 and the master connector CC. Meanwhile, although not shown in FIG. 13, the second master port 442 can form a signal transmission path with an external device.

Referring to FIGS. 13 and 14, a signal transmission path between the two slave connectors CB-8 and CB-9 and the master connector CC through the conductive pattern P2 is shown.

Specifically, the signal generated at the slave BMS 200-8 is filtered through the filter 434 of the slave connector CB-8 and then transmitted to the second communication port 223 through the slave connector CB-8. Via the first slave port 433 of the slave BMS 200-9 through the path of the second slave port 432 of the conductive pattern P2-1 and the slave connector CB- 222 < / RTI >

The signal generated in the slave BMS 200-9 is filtered through the filter 434 of the slave connector CB-9 and then transmitted to the second communication port 223 through the slave connector CB- The first master port 441 of the master connector CC reaches the first communication port 321 of the master BMS 300 via the path of the third master port 433, the conductive pattern P2-2, .

Thus, a signal generated in one slave BMS 200 may be transmitted to the master BMS 300 directly after being filtered by the filter 434 of the slave connector or via another slave BMS 200. Also, the signal output from the master BMS 300 may be transmitted to the at least one slave BMS 200 through the conductive pattern P2.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative, The present invention is not limited to the drawings, but all or some of the embodiments may be selectively combined so that various modifications may be made.

20: Battery pack
21: Case
100: Battery module
101: Battery cell
200: Slave BMS
300: Master BMS
CA: sensing connector
CB: Slave connector
CC: Master connector
400: Connecting board
410: Plate

Claims (14)

1. A connecting board mounted on a battery pack including a plurality of battery modules, a master BMS, and a plurality of slave BMSs,
A plate on which a first conductive pattern is formed and which supports the master BMS and the plurality of slave BMSs;
A plurality of sensing connectors disposed on the plate and individually connected to the respective battery modules via a plurality of voltage sensing lines;
A plurality of slave connectors disposed on the plate and individually coupled to the respective slave BMSs and including first to third slave ports; And
A master connector disposed on the plate and coupled to the master BMS and including a master port connected to a communication port of the master BMS,
Wherein a first slave port of each slave connector is connected to any one of the plurality of sensing connectors via the first conductive pattern,
The sensing port, the first communication port, and the second communication port of each slave BMS are individually connected to any one of the first to third slave ports of the plurality of slave connectors,
Each of the slave connectors including a filter for filtering a signal. The method according to claim 1,
A fastening portion formed on the plate and physically fixing the respective slave BMS to the respective slave connectors;
Further comprising a connecting board. The method according to claim 1,
Wherein at least one of the plurality of slave connectors comprises:
And is configured to be detachable from the plate. The method according to claim 1,
The first conductive pattern may include:
And a number of wiring assemblies equal to the number of slave connectors arranged on the plate,
Each sensing connector comprising:
Wherein the plurality of slave connectors are individually connected to the respective slave connectors through one set of wires included in the first conductive pattern. 5. The method of claim 4,
The terminals included in the first slave ports of the respective slave connectors are connected to the terminals included in the sensing ports of the respective slave BMS in a one-
Wherein each of the voltage sensing lines is connected to at least one terminal included in a first slave port of the slave connector through any one of the wires included in the wiring assembly. The method according to claim 1,
A second conductive pattern is further formed on the plate,
And a third slave port of each slave connector,
And connected to the master port of the master connector or the second slave port of any one of the remaining slave connectors through the second conductive pattern. The method according to claim 1,
The connecting board includes:
Wherein the battery pack is disposed in a second region of the internal region of the battery pack that is not overlapped with the first region in which the plurality of battery modules are disposed. The method according to claim 1,
The filter includes:
A connecting board for filtering signals occurring at the communication interface between the slave connectors or for filtering signals generated at the communication interface between the slave connector and the master connector. In the battery pack,
A plurality of battery modules each including a plurality of battery cells;
A plurality of slave BMSs for individually monitoring the states of the plurality of battery modules, respectively;
A master BMS for collecting data monitored by the plurality of slave BMSs and individually controlling the plurality of slave BMSs based on the collected data; And
And a connecting board for providing a communication interface between the master BMS and the plurality of slave BMSs,
The connecting board includes:
A plate on which a first conductive pattern is formed and which supports the master BMS and the plurality of slave BMSs;
A plurality of sensing connectors disposed on the plate and individually connected to the respective battery modules via a plurality of voltage sensing lines;
A plurality of slave connectors disposed on the plate and individually coupled to each of the slave BMSs and including first to third slave ports; And
A master connector disposed on the plate and coupled to the master BMS and including a master port connected to a communication port of the master BMS,
Wherein a first slave port of each slave connector is connected to any one of the plurality of sensing connectors via the first conductive pattern,
The sensing port, the first communication port, and the second communication port of each slave BMS are individually connected to any one of the first to third slave ports of the plurality of slave connectors,
Each of said slave connectors including a filter for filtering communication signals. 10. The method of claim 9,
The first conductive pattern may include:
And a number of wiring assemblies equal to the number of slave connectors arranged on the plate,
Each sensing connector comprising:
And each of the plurality of slave connectors is individually connected via a set of wires included in the first conductive pattern. 11. The method of claim 10,
The terminals included in the first slave ports of the respective slave connectors are connected to the terminals included in the sensing ports of the respective slave BMS in a one-
Wherein each of the voltage sensing lines is connected to at least one terminal included in a first slave port of the slave connector through any one of wires included in the wiring assembly. 10. The method of claim 9,
Wherein the plurality of battery modules include:
A battery pack (10)
The connecting board includes:
And the second area is not overlapped with the first area inside the battery pack. 10. The method of claim 9,
The filter includes:
Wherein the signal generated at the communication interface between the slave connectors is filtered or the signal generated at the communication interface between the slave connector and the master connector is filtered. The battery pack according to any one of claims 9 to 13,
The electric vehicle.

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