Printed circuit board and battery system using the same

Abstract

The present invention relates to a printed circuit board and a battery system using the same, wherein the printed circuit board includes a plurality of BMIC mounting circuits each providing electrical connection to a corresponding plurality of battery cells, a first BMIC mounting circuit located at the outermost side of one of the plurality of BMIC mounting circuits, a second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a connection module configured to provide electrical connection between first connection terminals, the first connection terminal being connected to a master battery management system (MBMS), and when a BMIC is not electrically connected to the first BMIC mounting circuit, the connection module provides a connection between the second BMIC mounting circuit and the first connection terminal, and when a BMIC is electrically connected to the first BMIC mounting circuit, the connection module provides a connection between the first connection terminal and the first BMIC mounting circuit and a connection between the first BMIC mounting circuit and the second BMIC mounting circuit.

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0150972 dated November 3, 2023, and all contents disclosed in the documents of this Korean patent application are incorporated herein by reference.

[0002] The present invention relates to a printed circuit board and a battery system using the same. [Background technology]

[0003] The battery system may include a plurality of CMCs (Cell Module Controllers) that measure information about each battery module and a master BMS (Master Battery Management System) that controls the plurality of CMCs.

[0004] Each of the multiple CMCs may include multiple BMICs (Battery Monitoring Integrated Circuits), each connected to a corresponding battery module, and capable of measuring information of the battery module, such as cell voltage, module voltage, module temperature, etc.

[0005] However, the number of BMICs included in each of the plurality of CMCs may vary depending on the number of battery modules, and thus, the plurality of CMCs including different numbers of BMICs may have different layouts. Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention aims to provide a CMC printed circuit board that allows for configurations of different numbers of BMICs, and to provide a battery system that allows communication between multiple CMCs, each with a different number of BMICs, and a master BMS for a battery system including multiple CMCs. [Means for solving the problem]

[0007] According to one aspect of the invention, a printed circuit board includes a plurality of BMIC mounting circuits each providing electrical connection to a corresponding plurality of battery cells, a first BMIC mounting circuit located at the outermost position on one side of the plurality of BMIC mounting circuits, and a second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a connection module configured to provide electrical connection between first connection terminals, the first connection terminals being configured to be connected to a Master Battery Management System (MBMS), and when a Battery Monitoring Integrated Circuit (BMIC) is not electrically connected to the first BMIC mounting circuit, the connection module provides connection between the second BMIC mounting circuit and the first connection terminal, and when a BMIC is electrically connected to the first BMIC mounting circuit, the connection module provides connection between the first connection terminal and the first BMIC mounting circuit and connection between the first BMIC mounting circuit and the second BMIC mounting circuit.

[0008] The connection module may include a first resistor mounting circuit having one end connected to a first terminal connected to the second BMIC mounting circuit via a first wiring and the other end connected to a second terminal connected to the first BMIC mounting circuit via a second wiring, and a second resistor mounting circuit having one end connected to a third terminal connected to the first BMIC mounting circuit via a third wiring and the other end connected to a fourth terminal connected to the first connection terminal via a fourth wiring.

[0009] When a resistor is electrically connected between one end and the other end of the first resistor mounting circuit and a resistor is electrically connected between one end and the other end of the second resistor mounting circuit, the connection module can provide an electrical connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal.

[0010] The connection module may further include a third resistor mounting circuit having one end connected to the first terminal and the other end connected to the fourth terminal.

[0011] When a resistor is electrically connected between one end and the other end of the third resistor implementation circuit, the connection module can provide an electrical connection between the first terminal and the fourth terminal.

[0012] When a resistor is not electrically connected between one end and the other end of each of the first to third resistor mounting circuits, the connection between the one end and the other end of each of the first to third resistor mounting circuits can be open.

[0013] According to another aspect of the invention, a battery system includes a plurality of battery modules connected in series, a plurality of cell module controllers (CMCs) connected to the plurality of battery modules, and a master battery management system (MBMS) communicating with the plurality of CMCs in a daisy chain manner, each of the plurality of CMCs having a first connection terminal connected to the MBMS, and a plurality of battery monitoring integrated circuits (BMIs) connected to corresponding battery modules of the plurality of battery modules. a first BMIC mounted circuit connected to an outermost battery module on one side of the corresponding plurality of battery modules; a second BMIC mounted circuit adjacent to the first BMIC mounted circuit and providing electrical connection between the corresponding plurality of battery cells and the corresponding BMIC among the plurality of BMICs; and a connection module configured to provide electrical connection between the first BMIC mounted circuit, the second BMIC mounted circuit, and the MBMS, wherein when a BMIC is not electrically connected to the first BMIC mounted circuit, the connection module provides connection between the second BMIC mounted circuit and the MBMS, and when a BMIC is electrically connected to the first BMIC mounted circuit, the connection module provides connection between the MBMS and the first BMIC mounted circuit and connection between the first BMIC mounted circuit and the second BMIC mounted circuit.

[0014] The connection module may include a first resistor mounting circuit having one end connected to a first terminal connected to the second BMIC mounting circuit via a first wiring and the other end connected to a second terminal connected to the first BMIC mounting circuit via a second wiring, and a second resistor mounting circuit having one end connected to a third terminal connected to the first BMIC mounting circuit via a third wiring and the other end connected to a fourth terminal connected to the first connection terminal via a fourth wiring.

[0015] When a resistor is electrically connected between one end and the other end of the first resistor mounting circuit and a resistor is electrically connected between one end and the other end of the second resistor mounting circuit, the connection module can provide an electrical connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal.

[0016] The connection module may further include a third resistor mounting circuit having one end connected to the first terminal and the other end connected to the fourth terminal.

[0017] When a resistor is electrically connected between one end and the other end of the third resistor implementation circuit, the connection module can provide an electrical connection between the first terminal and the fourth terminal.

[0018] When a resistor is not electrically connected between one end and the other end of each of the first to third resistor mounting circuits, the connection between the one end and the other end of each of the first to third resistor mounting circuits can be open. [Effects of the Invention]

[0019] Embodiments of the present invention can provide a battery system including multiple CMCs with a relatively small number of different layouts.

[0020] According to the embodiment of the present invention, the number of BMICs included therein can provide a communication connection structure between the BMICs and the master BMS to other CMCs.

[0021] An embodiment of the present invention provides a communication connection structure in which the last BMIC in each CMC can communicate with the next CMC or a master BMS (Battery Management System), even if the number of BMICs included in each CMC is different, each having the same layout.

[0022] According to the embodiment of the present invention, multiple CMCs including different numbers of BMICs can be arranged on the battery circuit in various configurations without necessarily requiring layout changes depending on the number of BMICs.

[0023] According to an embodiment of the present invention, the number of MDMs (Master Data Management) managed by various CMC configurations can be reduced, thereby providing management convenience.

[0024] According to an embodiment of the present invention, multiple CMCs can have the same layout, which is in contrast to circuits in which each CMC performs the same function for each internal BMIC but requires different layouts depending on the number of BMICs. Also, the number of CMC layout types on a single battery circuit is reduced, which reduces the number of elements that need to be managed and simplifies circuit management.

[0025] According to the embodiment of the present invention, PCB management is unified, and it is advantageous from the management aspect through the change of the mounting position of the BMIC. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a block diagram illustrating a battery system according to an embodiment. [Figure 2] FIG. 2 is a block diagram showing a schematic diagram of one substrate of the two CMCs shown in FIG. 1. [Figure 3] 2 is a block diagram showing a detailed configuration of one of the two connection modules shown in FIG. 1. FIG. [Figure 4] 4 is a block diagram showing a state in which resistors are mounted in two of the plurality of resistor-mounted circuits shown in FIG. 3. FIG. [Figure 5] 2 is a block diagram schematically illustrating a detailed configuration of a connection module connected to a BMIC-mounted circuit in which a BMIC is not mounted, among the connection modules shown in FIG. 1. FIG. [Figure 6]6 is a block diagram showing a state in which a resistor is mounted in one of the plurality of resistor-mounted circuits shown in FIG. 5. FIG. [Figure 7] FIG. 10 is an exemplary diagram of a comparison circuit that does not include a connection module. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, the embodiments disclosed herein will be described in detail with reference to the accompanying drawings. Identical or similar components will be designated by the same or similar reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and / or "section" used in the following description for components are added or used interchangeably solely for ease of description and do not have any distinct meanings or functions. Furthermore, when describing the embodiments disclosed herein, if a detailed description of related prior art is deemed to detract from the gist of the embodiments disclosed herein, such detailed description will be omitted. Furthermore, the accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, and the technical concepts disclosed herein should not be limited by the accompanying drawings. It should be understood that the accompanying drawings include all modifications, equivalents, or alternatives within the concept and technical scope of the present invention.

[0028] Terms including ordinal numbers such as first, second, etc. may be used to describe various components, but the components are not limited by the terms. These terms are used only to distinguish one component from another.

[0029] In this application, terms such as "comprise" or "have" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are to be understood as not precluding the possible presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0030] In one embodiment, a configuration that controls another configuration under specific control conditions can be installed with a program implemented as a set of instructions that embodies a control algorithm required to control the other configuration. The control configuration can process input data and stored data to generate output data according to the installed program. The control configuration can include a non-volatile memory for storing the program and a memory for storing data.

[0031] FIG. 1 is a block diagram illustrating a battery system according to one embodiment.

[0032] Referring to FIG. 1, the battery system 1 may include a plurality of battery modules 111-114, 121-123, a plurality of cell module controllers (CMCs) 200, 300, a master battery management system (MBMS) 400, and relays 500, 501.

[0033] Each of the plurality of battery modules 111-114, 121-123 may be realized by two or more battery cells connected in series, a plurality of battery cells each including two or more battery cells connected in parallel, or two or more battery cells connected in parallel. Hereinafter, for convenience of explanation, each of the plurality of battery modules 111-114, 121-123 will be referred to as including two or more battery cells connected in series.

[0034] One end of the relays 500, 501 is connected to the plurality of battery modules 111-114, 121-113, and the other end of the relays 500, 501 is connected to at least one component of the external device 2. The closing and opening of the relays 500, 501 can be controlled by relay control signals (RCS1, RCS2) supplied from the MBMS 400.

[0035] The battery system 1 can be connected to an external device 2. The external device 2 can include a load and a charging device such as an inverter or a converter. When the external device 2 is a charger, both ends (P+, P-) of the battery system 1 are connected to the charger, and the battery system 1 can be charged by receiving power from the charger. When the external device 2 is a load, both ends (P+, P-) of the battery system 1 are connected to the load, and power supplied by the battery pack 10 can be discharged through the load.

[0036] The MBMS 400 can measure the voltage, current, insulation resistance, etc. of multiple battery modules 111-114, 121-123 and perform control operations required for the measurements. The MBMS 400 can be connected to multiple CMCs 200, 300 in a daisy chain manner and communicate with them. For example, the MBMS 400 can perform ISO-SPI communication with multiple CMCs 200, 300.

[0037] The CMCs 200 and 300 may measure information on each of the battery modules 111-114 and 121-123 and transmit the information to the MBMS 400. The information on each of the battery modules 111-114 and 121-123 may include the cell voltage of the battery cells included in each of the battery modules 111-114 and 121-123, the voltage across each module, and the module temperature.

[0038] Each of the multiple CMCs 200, 300 may be realized by a printed circuit board (PCB), and each of the multiple CMCs 200, 300 may include multiple battery monitoring integrated circuits (BMICs).

[0039] Each of the multiple CMCs 200, 300 can be called a slave BMS in relation to the MBMS 400. Hereinafter, the description of each of the multiple CMCs 200, 300 can also be seen as a description of the printed circuit board on which each of the multiple CMCs 200, 300 is implemented.

[0040] 1, the number of CMCs 200, 300 is shown as two, but this is for convenience of explanation and the invention is not limited thereto. The battery system 1 can include two or more CMCs.

[0041] 1 shows seven battery modules 111-114, 121-123, four battery modules 111-114 connected to CMC 200, and three battery modules 121-123 connected to CMC 300, but this is for convenience of explanation and the invention is not limited thereto. Battery system 1 includes four or more battery modules, and each of the multiple CMCs can be connected to two or more battery modules.

[0042] The CMC 200 may include two terminals (P21_1, P21_2), multiple BMIC mounting circuits 221-224, multiple BMICs 231-234, a connection module 240, and multiple wirings (LN21-LN24). The multiple BMIC mounting circuits 221-224 may represent multiple circuits including multiple vias formed to mount each BMIC and multiple terminals for connecting with multiple battery cells. The two terminals (P21_1, P21_2) may be terminals formed so that the CMC 200 is connected in a daisy chain manner to at least one remaining CMC 300 and MBMS 400 among the multiple CMCs 200, 300.

[0043] In the following description, the number of the BMIC integrated circuits 221-224 will be described as four, but this is for convenience of explanation and the invention is not limited thereto. The CMC 200 may include a number of BMIC integrated circuits corresponding to the number of corresponding modules 111-114 among the battery modules 111-114, 121-123.

[0044] A corresponding BMIC (e.g., 231) among the plurality of BMICs 231-234 may be mounted in each of the plurality of BMIC-implemented circuits 221-224 (e.g., 221). Each of the plurality of BMIC-implemented circuits 221-224 (e.g., 221) may provide electrical connection between a plurality of battery cells included in a corresponding battery module (e.g., 111) among the plurality of battery modules 111-114 and a corresponding BMIC (e.g., 231) among the plurality of BMICs 231-234. When the plurality of BMICs 231-234 are electrically connected to the plurality of BMIC-implemented circuits 221-224, each of the plurality of BMICs 231-234 (e.g., 231) may be connected to both ends of a corresponding battery module 111 among the plurality of battery modules 111-114. Specifically, each of the plurality of BMICs 231-234 (e.g., 231) may be connected to both ends of a corresponding battery cell included in the corresponding battery module 111.

[0045] The multiple BMIC integrated circuits 221-224 can be connected in a daisy chain configuration. The BMIC integrated circuit 221 can be electrically connected to a terminal (P21_1) and electrically connected to the BMIC integrated circuit 222. The BMIC integrated circuit 222 can be electrically connected to the BMIC integrated circuit 223. The BMIC integrated circuit 223 can be electrically connected to the connection module 240 via a wiring (LN21). The BMIC integrated circuit 224 can be electrically connected to the connection module 240 via a wiring (LN22) and a wiring (LN23). The connection module 240 can be electrically connected to the terminal (P21_2) via a wiring (LN24). Hereinafter, the wiring formed inside the CMC 200 can be realized by internal wiring (trace) on the substrate on which the CMC 200 is implemented.

[0046] Each of the plurality of BMICs 231-234 (e.g., 231) may be connected to both ends of each of the plurality of battery cells included in a corresponding battery module (e.g., 111) among the plurality of battery modules 111-114. The BMIC 231 may receive a signal indicating a voltage from both ends of each of the plurality of battery cells included in the battery module 111 and derive the cell voltage of each of the plurality of battery cells included in the battery module 111. The BMIC 232 may receive a signal indicating a voltage from both ends of each of the plurality of battery cells included in the battery module 112 and derive the cell voltage of each of the plurality of battery cells included in the battery module 112. The BMIC 233 may receive a signal indicating a voltage from both ends of each of the plurality of battery cells included in the battery module 113 and derive the cell voltage of each of the plurality of battery cells included in the battery module 113. The BMIC 234 may receive a signal indicating a voltage from both ends of each of the plurality of battery cells included in the battery module 114 and derive the cell voltage of each of the plurality of battery cells included in the battery module 114.

[0047] The multiple BMICs 231-233 can communicate in a daisy chain manner. The BMIC 231 at one end of the multiple BMICs 231-233 can communicate with a terminal (P21_1) to transmit and receive signals and / or data. The BMIC 231 can communicate with the BMIC 232 to transmit and receive signals and / or data. The BMIC 232 can communicate with the BMIC 233 to transmit and receive signals and / or data. The BMIC 233 can communicate with the BMIC 234 to transmit and receive signals and / or data.

[0048] The outermost one of the BMIC circuits 221-224 (e.g., 224) may be connected to the outermost one of the battery modules 111-114 corresponding to the CMC 200. The outermost one of the BMIC circuits 221-224 (e.g., 224) may or may not be equipped with a BMIC 234 depending on the number and configuration of the battery modules 111-114, 121-123.

[0049] The CMC 300 may include two terminals (P31_1, P31_2), multiple BMIC mounting circuits 321-324, multiple BMICs 331-334, a connection module 340, and multiple wirings (LN31-LN34). The multiple BMIC mounting circuits 321-324 may represent multiple circuits including multiple vias formed to mount each BMIC and multiple terminals for connecting with multiple battery cells. The two terminals (P31_1, P31_2) may be terminals formed so that the CMC 300 is connected to at least one remaining CMC 200 and MBMS 400 among the multiple CMCs 200, 300 in a daisy chain manner.

[0050] Hereinafter, the number of the plurality of BMIC integrated circuits 321-324 will be described as four, but this is for convenience of explanation and the invention is not limited thereto. The CMC 300 may include a plurality of BMIC integrated circuits according to the number of corresponding modules 121-123 among the plurality of battery modules 111-114, 121-123.

[0051] A corresponding BMIC (e.g., 331) among the plurality of BMICs 331-334 may be mounted in each of the plurality of BMIC mounting circuits 321-324 (e.g., 321). Each of the plurality of BMIC mounting circuits 321-324 (e.g., 321) may provide electrical connection between a plurality of battery cells included in a corresponding battery module (e.g., 121) among the plurality of battery modules 121-123 and a corresponding BMIC (e.g., 331) among the plurality of BMICs 331-334. When three BMICs 331-333 are electrically connected to the remaining BMIC mounting circuits 321-324 (e.g., 321-323) except for the outermost mounting circuit (e.g., 324) on one side, each of the three BMICs 331-333 (e.g., 331) may be connected to both ends of a corresponding battery module (e.g., 121) among the plurality of battery modules 121-123. Specifically, each of the plurality of BMICs 331-333 (eg, 331) can be connected to both ends of each of the plurality of battery cells included in the corresponding battery module (eg, 121).

[0052] The multiple BMIC integrated circuits 321-324 can be connected in a daisy chain configuration. The BMIC integrated circuit 321 can be electrically connected to the terminal (P31_1) and electrically connected to the BMIC integrated circuit 322. The BMIC integrated circuit 322 can be electrically connected to the BMIC integrated circuit 323. The BMIC integrated circuit 323 can be electrically connected to the connection module 340 via the wiring (LN31). The BMIC integrated circuit 324 can be electrically connected to the connection module 340 via the wiring (LN32) and the wiring (LN33). The connection module 340 can be electrically connected to the terminal (P31_2) via the wiring (LN34). Hereinafter, the wiring formed inside the CMC 300 can be realized by internal wiring (trace) on the substrate on which the CMC 300 is implemented.

[0053] Each of the remaining BMIC implementation circuits (e.g., 321-323) (e.g., 331) among the plurality of BMIC implementation circuits 321-324, excluding the outermost implementation circuit (e.g., 324) on one side, may be connected to both ends of each of a plurality of battery cells included in a corresponding battery module (e.g., 121) among the plurality of battery modules 121-123. The BMIC 331 may receive a signal indicating a voltage from both ends of each of the plurality of battery cells included in the battery module 121 and derive the cell voltage of each of the plurality of battery cells included in the battery module 121. The BMIC 332 may receive a signal indicating a voltage from both ends of each of the plurality of battery cells included in the battery module 122 and derive the cell voltage of each of the plurality of battery cells included in the battery module 122. The BMIC 333 may receive a signal indicating a voltage from both ends of each of the plurality of battery cells included in the battery module 123 and derive the cell voltage of each of the plurality of battery cells included in the battery module 123.

[0054] Among the plurality of BMIC implementation circuits 321-324, the plurality of BMICs 331-333 electrically connected to the remaining implementation circuits (e.g., 321-323) except for the outermost implementation circuit (e.g., 324) on one side can communicate in a daisy chain manner. The BMIC 331 at one end of the plurality of BMICs 331-333 can communicate with a terminal (P31_1) to transmit and receive signals and / or data. The BMIC 331 can communicate with the BMIC 332 to transmit and receive signals and / or data. The BMIC 332 can communicate with the BMIC 333 to transmit and receive signals and / or data. The BMIC 333 can communicate with the BMIC 334 to transmit and receive signals and / or data.

[0055] The outermost mounted circuit (e.g., 324) on one side of the plurality of BMIC mounted circuits 321-324 may not be connected to a battery module because there is no corresponding battery module among the battery modules 121-123 corresponding to the CMC 300. In this manner, the outermost mounted circuit (e.g., 324) on one side of the plurality of BMIC mounted circuits 321-324 may or may not have a BMIC 334 mounted thereon.

[0056] 1 illustrates an example in which a BMIC 234 is implemented in the BMIC-integrated circuit 224 and a BMIC 334 is not implemented in the BMIC-integrated circuit 324, but this is for convenience of explanation and the invention is not limited to this. Below, we will explain one embodiment in which a BMIC 234 is implemented in the BMIC-integrated circuit 224 via a CMC 200, and another embodiment in which a BMIC 334 is not implemented in the BMIC-integrated circuit 324 via a CMC 300.

[0057] The MBMS 400 may include a connector 401. The connector 401 may be connected to the CMC 200 and the CMC 300 in a daisy chain manner to perform communication. The connector 401 may be connected to a terminal (P21_1) via wiring. The terminal (P21_2) may be connected to a terminal (P31_1). The terminal (P31_2) may be connected to the connector 401. The connector 401 and the terminal (P21_1), the terminal (P21_2) and the terminal (P31_1), and the terminal (P31_2) and the connector 401 may be connected via external wiring (wire harness).

[0058] Each of the plurality of CMCs 200, 300 (e.g., 200) may provide a power path for communication by being daisy-chained to a BMIC-mounted circuit (e.g., 221-224) among the plurality of BMIC-mounted circuits (e.g., 221-224) in which a BMIC is mounted, in the case where a BMIC is mounted in each of the two BMIC-mounted circuits 224, 324 and in the case where a BMIC is not mounted in each of the two BMIC-mounted circuits 224, 324. Each of the plurality of CMCs 200, 300 (e.g., 200) may include a connection module (e.g., 240) for providing such a power path.

[0059] 1, CMC 200 is shown as including a connection module 240 connected to BMIC circuit 224, which is one of the outermost BMIC circuit implementations 221-224 on one side, and CMC 300 is shown as including a connection module 340 connected to BMIC circuit 324, which is one of the outermost BMIC circuit implementations 321-324 on one side, for convenience of explanation, but the invention is not limited thereto. Each of the multiple CMCs 200, 300 can include one or more connection modules.

[0060] In one embodiment, the CMC may include a first connection module connected to the outermost BMIC circuit (e.g., 224) on one side of the plurality of BMIC circuits (e.g., 221-224) and a second connection module connected to the outermost BMIC circuit (e.g., 221) on the other side of the plurality of BMIC circuits (e.g., 221-224). In another embodiment, the connection module of the CMC may be connected to the outermost BMIC circuit (e.g., 221) on the other side of the plurality of BMIC circuits (e.g., 221-224).

[0061] The connection module 240 can be connected to the BMIC circuit 224 located on the outermost side of the multiple BMIC circuits 221-224, the BMIC circuit 223 adjacent to the BMIC circuit 224 located on the outermost side of the multiple BMIC circuits 221-224, and the terminal (P21_2). The connection module 240 can be connected to the BMIC circuit 223 via wiring (LN21). The connection module 240 can be connected to the BMIC circuit 224 via wiring (LN22) and wiring (LN23). The connection module 240 can be connected to the terminal (P21_2) via wiring (LN24).

[0062] The connection module 240 can connect the remaining three BMIC circuits 221-223, excluding the outermost BMIC circuit 224 on one side, in a daisy chain manner via a power path including the wiring (LN21) and the wiring (LN24). Alternatively, the connection module 240 can connect the four BMIC circuits 221-224 in a daisy chain manner via a power path including the wiring (LN21), the wiring (LN22), the wiring (LN23), and the wiring (LN24).

[0063] The connection module 340 can be connected to the BMIC circuit 324 located on the outermost side of the multiple BMIC circuits 321-324, the BMIC circuit 323 adjacent to the BMIC circuit 324 located on the outermost side of the multiple BMIC circuits 321-324, and the terminal (P31_2). The connection module 340 can be connected to the BMIC circuit 323 via wiring (LN31). The connection module 340 can be connected to the BMIC circuit 324 via wiring (LN32) and wiring (LN32). The connection module 340 can be connected to the terminal (P31_2) via wiring (LN34).

[0064] The connection module 340 can connect the remaining three BMIC circuits 321-323, excluding the outermost BMIC circuit 324, in a daisy chain manner through a power path including the wiring (LN31) and the wiring (LN34). Alternatively, the connection module 340 can connect the four BMIC circuits 321-324 in a daisy chain manner through a power path including the wiring (LN31), the wiring (LN32), the wiring (LN33), and the wiring (LN34).

[0065] FIG. 2 is a block diagram showing a schematic diagram of one substrate of the two CMCs shown in FIG.

[0066] 2, one (e.g., P21_1) of the two terminals (P21_1, P21_2) can be connected to MBMS 400 via a wire, and the other (e.g., P21_2) of the two terminals (P21_1, P21_2) can be connected to a terminal (e.g., P31_1) of another CMC (e.g., 300 in FIG. 1) via a wire. Terminal (P21_2) can be connected to one end of wire (LN24).

[0067] The BMIC implementation circuit 221 may include a plurality of connection terminals (P2211, P2212, P2213_1-P2213_m1) and a plurality of vias (V2211, V2212, V2213_1-V2213_m1). Here, m1 may be a natural number greater than or equal to 3. Each of the plurality of vias (V2211, V2212, V2213_1-V2213_m1) may include a via hole into which each of the pins of the BMIC chip is mounted. The BMIC 231 shown in FIG. 1 may be mounted on the BMIC implementation circuit 221 by inserting the pins of the BMIC 231 chip into the plurality of vias (V2211, V2212, V2213_1-V2213_m1).

[0068] Each of the plurality of vias (V2213_1-V2213_m1) (for example, V2213_1) can be electrically connected to a corresponding connection terminal (for example, P2213_1) among the plurality of connection terminals (P2213_1-P2213_m1). The connection terminals (P2213_1-P2213_m1) connected to the battery module 111 can be connected to both ends of each of the plurality of battery cells connected in series that constitute the battery module 111.

[0069] The via (V2211) can be electrically connected to the connection terminal (P2211). The connection terminal (P2211) can be connected to the terminal (P21_1) through a wiring. The via (V2212) can be electrically connected to the connection terminal (P2212).

[0070] The BMIC implementation circuit 222 may include a plurality of connection terminals (P2221, P2222, P2223_1-P2223_m2) and a plurality of vias (V2221, V2222, V2223_1-V2223_m2), where m2 may be a natural number greater than or equal to 3.

[0071] Each of the vias (V2221, V2222, V2223_1-V2223_m2) may include a via hole to which each of the pins of the BMIC chip is mounted. The BMIC 232 shown in FIG. 1 may be mounted on the BMIC mounting circuit 222 by inserting the pins of the BMIC 232 chip into the vias (V2221, V2222, V2223_1-V2223_m2).

[0072] Each of the plurality of vias (V2223_1-V2223_m2) (for example, V2223_1) can be electrically connected to a corresponding connection terminal (for example, P2223_1) among the plurality of connection terminals (P2223_1-P2223_m2). The connection terminals (P2223_1-P2223_m2) connected to the battery module 112 can be connected to both ends of each of the plurality of battery cells connected in series that constitute the battery module 112.

[0073] The via (V2221) can be electrically connected to the connection terminal (P2221). The connection terminal (P2221) can be connected to the connection terminal (P2212) of the BMIC implementation circuit 221 through wiring. The via (V2222) can be electrically connected to the connection terminal (P2222).

[0074] The BMIC implementation circuit 223 may include a plurality of connection terminals (P2231, P2232, P2233_1-P2233_m3) and a plurality of vias (V2231, V2232, V2233_1-V2233_m3). Here, m3 may be a natural number greater than or equal to 3. Each of the plurality of vias (V2231, V2232, V2233_1-V2233_m3) may include a via hole into which each of the pins of the BMIC chip is mounted. The BMIC 233 shown in FIG. 1 may be mounted on the BMIC implementation circuit 223 by inserting the pins of the BMIC 233 chip into the plurality of vias (V2231, V2232, V2233_1-V2233_m3).

[0075] Each (e.g., V2233_1) of the plurality of vias (V2233_1-V2233_m3) can be electrically connected to a corresponding connection terminal (e.g., P2233_1) among the plurality of connection terminals (P2233_1-P2233_m3). The connection terminals (P2223_1-P2223_m3) connected to the battery module 113 can be connected to both ends of each of the plurality of battery cells connected in series that constitute the battery module 113.

[0076] The via (V2231) can be electrically connected to the connection terminal (P2231). The connection terminal (P2231) can be connected to the connection terminal (P2222) of the BMIC implementation circuit 222 via wiring. The via (V2232) can be electrically connected to the connection terminal (P2232). The connection terminal (P2232) can be connected to one end of wiring (LN21).

[0077] The BMIC implementation circuit 224 may include a plurality of connection terminals (P2241, P2242, P2243_1-P2243_m4) and a plurality of vias (V2241, V2242, V2243_1-V2243_m4), where m4 may be a natural number greater than or equal to 3. Each of the plurality of vias (V2241, V2242, V2243_1-V2243_m4) may include a via hole into which each of the pins of the BMIC chip is mounted. The BMIC 234 shown in FIG. 1 may be mounted on the BMIC implementation circuit 224 by inserting the pins of the BMIC 234 chip into the plurality of vias (V2241, V2242, V2243_1-V2243_m4).

[0078] Each (e.g., V2243_1) of the plurality of vias (V2243_1-V2243_m3) can be electrically connected to a corresponding connection terminal (e.g., P2243_1) among the plurality of connection terminals (P2243_1-P2243_m4). The connection terminals (P2233_1-P2233_m4) connected to the battery module 113 can be connected to both ends of each of the plurality of battery cells connected in series that constitute the battery module 113.

[0079] The via (V2241) can be electrically connected to the connection terminal (P2241). The connection terminal (P2241) can be connected to one end of the wiring (LN22). The via (V2242) can be electrically connected to the connection terminal (P2242). The connection terminal (P2242) can be connected to one end of the wiring (LN23).

[0080] The connection module 240 may provide electrical connection between the outermost BMIC circuit (e.g., 224) on one side of the plurality of BMIC circuits 221-224, the BMIC circuit (e.g., 223) adjacent to the outermost BMIC circuit (e.g., 224) on one side, and the terminal (P21_2). The connection module 240 may include a plurality of terminals (P24_1-P24_4).

[0081] The terminal (P24_1) can be connected to the other end of the wiring (LN21), the terminal (P24_2) can be connected to the other end of the wiring (LN22), the terminal (P24_3) can be connected to the other end of the wiring (LN23), and the terminal (P24_4) can be connected to the other end of the wiring (LN24_4).

[0082] When a BMIC is electrically connected to the BMIC implementation circuit (e.g., 224) located at the outermost position on one side among the plurality of BMIC implementation circuits 221-224, the connection module 240 can provide a connection between the BMIC implementation circuit (e.g., 223) adjacent to the BMIC implementation circuit (e.g., 224) located at the outermost position on one side and the terminal (P21_2) via wiring (LN21) and wiring (LN24).

[0083] When a BMIC (e.g., 234 in FIG. 1) is electrically connected to a BMIC implementation circuit (e.g., 224) located at the outermost position on one side among the plurality of BMIC implementation circuits 221-224, the connection module 240 provides a connection between the BMIC implementation circuit (e.g., 224) located at the outermost position on one side and the BMIC implementation circuit (e.g., 223) adjacent to the BMIC implementation circuit (e.g., 224) located at the outermost position on one side via wiring (LN21) and wiring (LN22), and can provide a connection between the BMIC implementation circuit (e.g., 224) located at the outermost position on one side and terminal (P21_2) via wiring (LN23) and wiring (LN24).

[0084] FIG. 3 is a block diagram showing a detailed schematic configuration of one of the two connection modules shown in FIG.

[0085] 3, the battery module 114 may include a plurality of battery cells 114_1-114_m4 connected in series, where m4 is a natural number equal to or greater than 3. The BMIC implementation circuit 224 may include a plurality of terminals (P2_1-P2_m4, P21, P22).

[0086] Both ends of the plurality of battery cells 114_1-114_m4 can be connected to a plurality of terminals (P2_1-P2_m4). The plurality of terminals (P2_1-P2_m4) can be connected to the BMIC 234. The BMIC 234 can derive the voltages across each of the plurality of battery cells 114_1-114_m4 based on signals received from the plurality of terminals (P2_1-P2_m4). Two terminals (P21, P22) can be connected to the BMIC 234.

[0087] The connection module 240 may include a plurality of terminals (P24_1-P24_4) and a plurality of resistor implementation circuits 241-243. One end of the wiring (LN21) may be connected to a terminal (e.g., P2232 shown in FIG. 2) of the BMIC implementation circuit 223 shown in FIGS. 1 and 2, and the other end of the wiring (LN21) may be connected to a terminal (P24_1). One end of the wiring (LN24) may be connected to a terminal (P21_2) shown in FIGS. 1 and 2, and the other end of the wiring (LN24) may be connected to a terminal (P24_4). One end of the wiring (LN22) may be connected to a terminal (P21), and the other end of the wiring (LN22) may be connected to a terminal (P24_2). One end of the wiring (LN23) may be connected to a terminal (P22), and the other end of the wiring (LN23) may be connected to a terminal (P24).

[0088] Each of the plurality of resistor mounting circuits 241-243 may be a region formed so that a resistor is electrically connected between both ends. Resistor mounting circuit 241 may include both ends 2411a, 2411b and a mounting region 2412. Resistor mounting circuit 242 may include both ends 2421a, 2421b and a mounting region 2422. Resistor mounting circuit 243 may include both ends 2431a, 2431b and a mounting region 2432. When a resistor is connected between both ends of each of the plurality of resistor mounting circuits 241-243, an electrical connection may be provided between the ends to which the resistor is connected.

[0089] Hereinafter, the resistors implemented in the plurality of resistor implementation circuits 241-243 may have resistance values ​​less than a predetermined reference resistance. For example, in one embodiment, the reference resistance is 0.02 ohms, and the resistor implementation circuits may implement so-called "0 ohm resistors" having resistance values ​​less than 0.02 ohms.

[0090] Resistors may or may not be mounted in each of the multiple mounting areas 2412, 2422, and 2432. When a resistor is not mounted in each of the multiple mounting areas 2412, 2422, and 2432 (e.g., 2412), both ends (e.g., 2411a and 2411b) of a corresponding resistor mounting circuit (e.g., 241) among the multiple resistor mounting circuits 241-243 can be open.

[0091] The resistor implementation circuit 241 may be a circuit for providing an electrical connection between the terminal (P24_1) and the terminal (P24_2). One end 2411a of the resistor implementation circuit 241 may be connected to the terminal (P24_2) via a wiring (LN242). The other end 2411b of the resistor implementation circuit 241 may be connected to a node (ND2_1) via a wiring (LN241). The node (ND2_1) may be a node on the wiring (LN241) connected to the terminal (P24_1). When a resistor is electrically connected between the one end 2411a and the other end 2411b of the resistor implementation circuit 241, the connection module 240 can provide an electrical connection between the terminal (P24_1) and the terminal (P24_2). When a resistor is not electrically connected between one end 2411a and the other end 2411b of the resistor mounted circuit 241, the resistor mounted circuit 241 can be open between one end 2411a and the other end 2411b.

[0092] The resistor implementation circuit 242 may be a circuit for providing an electrical connection between the terminal (P24_1) and the terminal (P24_4). One end 2421a of the resistor implementation circuit 242 may be connected to a node (ND2_1). The other end 2421b of the resistor implementation circuit 242 may be connected to a node (ND2_2). The node (ND2_2) may be a node on a wiring (LN244) connected to the terminal (P24_4). When a resistor is electrically connected between the one end 2421a and the other end 2421b of the resistor implementation circuit 242, the connection module 240 may provide an electrical connection between the terminal (P24_1) and the terminal (P24_4). When a resistor is not electrically connected between the one end 2421a and the other end 2421b of the resistor implementation circuit 242, the one end 2421a and the other end 2421b of the resistor implementation circuit 242 may be open.

[0093] The resistor implementation circuit 243 may be a circuit for providing an electrical connection between the terminal (P24_3) and the terminal (P24_4). One end 2431a of the resistor implementation circuit 243 can be connected to the terminal (P24_3) via a wiring (LN243). The other end 2431b of the resistor implementation circuit 243 can be connected to the node (ND2_2) via a wiring (LN244). When a resistor is electrically connected between the one end 2431a and the other end 2431b of the resistor implementation circuit 243, the connection module 240 can provide an electrical connection between the terminal (P24_3) and the terminal (P24_4). When a resistor is not electrically connected between the one end 2431a and the other end 2431b of the resistor implementation circuit 243, the one end 2431a and the other end 2431b of the resistor implementation circuit 243 can be open.

[0094] FIG. 4 is a block diagram showing a state in which resistors are mounted in two of the plurality of resistor-mounted circuits shown in FIG.

[0095] 4, a resistor (R) may be implemented between both ends (e.g., 2421a, 2421b) of each (e.g., 241) of the two resistor implementation circuits 241, 243. When the resistor (R) is implemented in each of the two resistor implementation circuits 241, 243, a power path may be formed that includes the wiring (LN21), the terminal (P24_1), the wiring (LN241) (and the node (ND2_1)), the resistor implementation circuit 241, the wiring (LN242), the terminal (P24_2), the wiring (LN22), the terminal (P21), the BMIC234, the terminal (P22), the wiring (LN23), the terminal (P24_3), the wiring (LN243), the resistor implementation circuit 243, the wiring (LN244) (and the node (ND2_2)), the terminal (P24_4), and the wiring (LN24). No resistor is mounted on the resistor mounted circuit 242, and both ends 2421a and 2421b are open, so no current flows.

[0096] Referring to Figures 1 and 4, multiple BMIC implementation circuits 221-224, each electrically connected to a BMIC, can be connected in a daisy chain manner via a power path including wiring (LN21), terminal (P24_1), wiring (LN241) (and node (ND2_1)), resistor implementation circuit 241, wiring (LN242), terminal (P24_2), wiring (LN22), terminal (P21), BMIC 234, terminal (P22), wiring (LN23), terminal (P24_3), wiring (LN243), resistor implementation circuit 243, wiring (LN244) (and node (ND2_2)), terminal (P24_4), and wiring (LN24).

[0097] FIG. 5 is a block diagram diagrammatically showing the detailed configuration of a connection module connected to a BMIC-mounted circuit in which no BMIC is mounted, among the connection modules shown in FIG.

[0098] 5, the BMIC implementation circuit 224 may include multiple terminals (P3_1-P3_n, P31, P32), where n is a natural number equal to or greater than 3. The BMIC implementation circuit 324 may not include a BMIC.

[0099] The connection module 340 may include a plurality of terminals (P34_1-P34_4) and a plurality of resistor mounting circuits 341-343. One end of the wiring (LN31) may be connected to the BMIC 333 shown in FIG. 1, and the other end of the wiring (LN31) may be connected to the terminal (P34_1). One end of the wiring (LN2) may be connected to the terminal (P31_2) shown in FIG. 1, and the other end of the wiring (LN34) may be connected to the terminal (P34_4). One end of the wiring (LN32) may be connected to the terminal (P31), and the other end of the wiring (LN32) may be connected to the terminal (P34_2). One end of the wiring (LN33) may be connected to the terminal (P32), and the other end of the wiring (LN33) may be connected to the terminal (P34_3).

[0100] Each of the plurality of resistor mounting circuits 341-343 may be an area formed so that a resistor is mounted between its two ends. Resistor mounting circuit 341 may include two ends 3411a, 3411b and a mounting area 3412. Resistor mounting circuit 342 may include two ends 3421a, 3421b and a mounting area 3422. Resistor mounting circuit 343 may include two ends 3431a, 3431b and a mounting area 3432.

[0101] Hereinafter, the resistors implemented in the plurality of resistor implementation circuits 341-343 may have resistance values ​​less than a predetermined reference resistance. For example, in one embodiment, the reference resistance is 0.02 ohms, and the resistor implementation circuits may be implemented with so-called "0 ohm resistors" having resistance values ​​less than 0.02 ohms.

[0102] A resistor may or may not be mounted in each of the multiple mounting areas 3412, 3422, and 3432. When a resistor is not mounted in each of the multiple mounting areas 3412, 3422, and 3432 (for example, 3412), the two ends (for example, 3411a and 3411b) of the corresponding resistor mounting circuit (for example, 341) among the multiple resistor mounting circuits 341-343 can be open.

[0103] The resistor implementation circuit 341 may be a circuit for providing an electrical connection between the terminal (P34_1) and the terminal (P34_2). One end 3411a of the resistor implementation circuit 341 may be connected to the terminal (P34_2). The other end 3411b of the resistor implementation circuit 341 may be connected to the node (ND3_1). The node (ND3_1) may be a node on the wiring (LN341) connected to the terminal (P34_1). When a resistor is electrically connected between the one end 3411a and the other end 3411b of the resistor implementation circuit 341, the connection module 340 may provide an electrical connection between the terminal (P34_1) and the terminal (P34_2). When a resistor is not electrically connected between the one end 3411a and the other end 3411b of the resistor implementation circuit 341, the one end 3411a and the other end 3411b of the resistor implementation circuit 341 may be open.

[0104] The resistor implementation circuit 342 may be a circuit for providing an electrical connection between the terminal (P34_1) and the terminal (P34_4). One end 3421a of the resistor implementation circuit 342 may be connected to the node (ND3_1) via a wiring (LN342). The other end 3421b of the resistor implementation circuit 342 may be connected to the node (ND3_2) via a wiring (LN343). The node (ND3_2) may be a node on the wiring (LN343) connected to the terminal (P34_4). When a resistor is electrically connected between the one end 3421a and the other end 3421b of the resistor implementation circuit 342, the connection module 340 may provide an electrical connection between the terminal (P34_1) and the terminal (P34_4). When a resistor is not electrically connected between one end 3421a and the other end 3421b of the resistor mounting circuit 342, the resistor mounting circuit 342 can be open between one end 3421a and the other end 3421b.

[0105] The resistor implementation circuit 343 may be a circuit for providing an electrical connection between the terminal (P34_3) and the terminal (P34_4). One end 3431a of the resistor implementation circuit 343 may be connected to the terminal (P34_3). The other end 3431b of the resistor implementation circuit 343 may be connected to the node (ND3_2). When a resistor is electrically connected between the one end 3431a and the other end 3431b of the resistor implementation circuit 343, the connection module 340 may provide an electrical connection between the terminal (P34_3) and the terminal (P34_4). When a resistor is not electrically connected between the one end 3431a and the other end 3431b of the resistor implementation circuit 343, the one end 3431a and the other end 3431b of the resistor implementation circuit 343 may be open.

[0106] FIG. 6 is a block diagram showing a state in which a resistor is mounted on one of the plurality of resistor-mounted circuits shown in FIG.

[0107] 6, a resistor (R) can be implemented between both ends 3421a and 3421b of the resistor implementation circuit 342. When the resistor (R) is implemented in the resistor implementation circuit 342, a power path can be formed including the wiring (LN31), the terminal (P34_1), the wiring (LN341), the node (ND3_1), the wiring (LN342), the resistor implementation circuit 342, the wiring (LN343), the node (ND3_2), the terminal (34_4), and the wiring (LN34). No resistor is implemented in each of the two resistor implementation circuits 341 and 343 (e.g., 341), and the ends (e.g., 3421a and 3421b) are open, so no current flows.

[0108] Referring to FIGS. 1 and 6, three BMIC implementation circuits 321-323, to which BMICs are electrically connected, can be connected in a daisy chain manner among the multiple BMIC implementation circuits 321-324 via a power path including wiring (LN31), terminal (P34_1), wiring (LN341), node (ND3_1), wiring (LN342), resistor implementation circuit 342, wiring (LN343) (and node (ND3_2), terminal (P34_4), and wiring (LN34)).

[0109] FIG. 7 is an exemplary diagram of a comparison circuit that does not include a connection module.

[0110] 7 is an example of a battery system and may include multiple battery modules 611-614, 621-623, multiple CMCs 700, 800, an MBMS 900, and relays 1000, 1001. Both ends (P6+, P6−) of the comparison circuit 6 may be connected to an external device 7.

[0111] The CMC 700 includes two terminals (P71_1, P71_2) and four BMICs (731-734), and the CMC 800 includes two terminals (P81_1, P81_2) and three BMICs 831-833. The four BMICs 731-734 can be connected to the four battery modules 611-614, and the three BMICs 831-833 can be connected to the three battery modules 621-623. Each of the four BMICs 731-734 and the three BMICs 831-833 may be electrically connected to a circuit corresponding to a BMIC implementation circuit according to one embodiment.

[0112] The two terminals (P71_1, P71_2) are connected to four BMICs 731-734 in a daisy chain configuration via internal wiring to communicate, and the two terminals (P81_1, P81_2) are connected to three BMICs 831-833 in a daisy chain configuration via internal wiring to communicate. Because the two CMCs 700, 800 each include a different number of BMICs, the two CMCs 700, 800 have different types of internal wiring. According to the comparison circuit 6, the CMCs 700 and 800 can be implemented on different boards.

[0113] The MBMS 900 may include a connector 901. The connector 901 may be daisy-chained with the CMC 700 and the CMC 800 to communicate with them. The connector 901 may be connected to a terminal (P71_1) via wiring. The terminal (P71_2) may be connected to a terminal (P81_1). The terminal (P81_2) may be connected to the connector 901. The connector 901 and the terminal (P71_1), the terminal (P71_2) and the terminal (P81_1), and the terminal (P81_2) and the connector 901 may be connected via external wiring.

[0114] As such, depending on the battery configuration, various CMCs may be required for various CMC types, and up to dozens of different CMCs may be required per battery pack. In projects requiring various CMCs, different printed circuit boards and bills of materials (BOMs) may be applied for each CMC, which may require individual master data management (MDMs). Since management becomes difficult when there are many MDMs in a battery pack, a battery system 1 according to one embodiment includes a connection module (e.g., 240) in each of the multiple CMCs 200, 300 (e.g., 200) so that they can be managed using the same printed circuit board, BOM, etc.

[0115] 1 , in a battery system 1 according to one embodiment, among the plurality of BMIC-mounted circuits 221-224 provided inside a CMC 200, BMIC-mounted circuits 221-224, in which BMICs are mounted and electrically connected, are connected in a daisy chain to communicate, and among the plurality of BMIC-mounted circuits 321-324 provided inside a CMC 300, BMIC-mounted circuits 221-223, in which BMICs are mounted and electrically connected, are connected in a daisy chain to communicate. Thus, the two CMCs 200 and 300 differ in the number of BMICs included but have the same internal wiring via their respective connection modules 240 and 340 and the multiple wirings connected to the connection modules 240 and 340. Therefore, the two CMCs 200 and 300 can be implemented on the same printed circuit board. In the battery system 1, in the multiple CMCs 200, 300 implemented on the same board, the power paths can be made different via the connection modules 240, 340 depending on whether a BMIC is mounted in each of the multiple BMIC-mounted circuits 224, 324.

[0116] Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited to these examples, and various modifications and improvements made by those skilled in the art to which the present invention pertains also fall within the scope of the present invention.

Claims

1. a plurality of BMIC-mounted circuits providing electrical connections to each of a corresponding plurality of battery cells; and a connection module configured to provide electrical connection between a first BMIC assembly circuit located at an outermost position on one side of the plurality of BMIC assembly circuits, a second BMIC assembly circuit adjacent to the first BMIC assembly circuit, and a first connection terminal; the first connection terminal is configured to be connected to an MBMS; When a BMIC is not electrically connected to the first BMIC mounting circuit, the connection module provides a connection between the second BMIC mounting circuit and the first connection terminal; When a BMIC is electrically connected to the first BMIC assembly circuit, the connection module provides a connection between the first connection terminal and the first BMIC assembly circuit and a connection between the first BMIC assembly circuit and the second BMIC assembly circuit. Printed circuit board.

2. The connection module includes: a first resistor mounted circuit having one end connected to a first terminal connected to the second BMIC mounted circuit via a first wiring and having the other end connected to a second terminal connected to the first BMIC mounted circuit via a second wiring; and a second resistor mounted circuit having one end connected to a third terminal connected to the first BMIC mounted circuit via a third wiring, and the other end connected to a fourth terminal connected to the first connection terminal via a fourth wiring; The printed circuit board of claim 1 .

3. When a resistor is electrically connected between one end and the other end of the first resistor mounting circuit and a resistor is electrically connected between one end and the other end of the second resistor mounting circuit, The connection module includes: providing an electrical connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal; The printed circuit board of claim 2.

4. The connection module includes: a third resistor mounted circuit having one end connected to the first terminal and the other end connected to the fourth terminal; The printed circuit board of claim 2.

5. When a resistor is electrically connected between one end and the other end of the third resistor mounting circuit, The connection module includes: providing an electrical connection between the first terminal and the fourth terminal; 5. The printed circuit board of claim 4.

6. When a resistor is not electrically connected between one end and the other end of each of the first to third resistor mounted circuits, The first to third resistor mounting circuits are each open between one end and the other end.

5. The printed circuit board of claim 4.

7. a plurality of battery modules connected in series; a plurality of CMCs connected to the plurality of battery modules; and an MBMS communicating with the plurality of CMCs in a daisy chain manner; Each of the plurality of CMCs a first connection terminal connected to the MBMS; a plurality of BMICs connected to corresponding battery modules among the plurality of battery modules; a first BMIC mounting circuit connected to the battery module located at the outermost position on one side among the corresponding plurality of battery modules; a second BMIC assembly adjacent to the first BMIC assembly and providing electrical connections between a corresponding plurality of battery cells and a corresponding one of the plurality of BMICs; and a connection module configured to provide an electrical connection between the first BMIC implementation circuit, the second BMIC implementation circuit, and the MBMS; When a BMIC is not electrically connected to the first BMIC mounted circuit, the connection module provides a connection between the second BMIC mounted circuit and the MBMS; When a BMIC is electrically connected to the first BMIC mounted circuit, the connection module provides a connection between the MBMS and the first BMIC mounted circuit and a connection between the first BMIC mounted circuit and the second BMIC mounted circuit. Battery system.

8. The connection module includes: a first resistor mounted circuit having one end connected to a first terminal connected to the second BMIC mounted circuit via a first wiring and having the other end connected to a second terminal connected to the first BMIC mounted circuit via a second wiring; and a second resistor mounted circuit having one end connected to a third terminal connected to the first BMIC mounted circuit via a third wiring, and the other end connected to a fourth terminal connected to the first connection terminal via a fourth wiring; The battery system of claim 7.

9. When a resistor is electrically connected between one end and the other end of the first resistor mounting circuit and a resistor is electrically connected between one end and the other end of the second resistor mounting circuit, The connection module includes: providing an electrical connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal; The battery system of claim 8.

10. The connection module includes: a third resistor mounted circuit having one end connected to the first terminal and the other end connected to the fourth terminal; The battery system of claim 8.

11. When a resistor is electrically connected between one end and the other end of the third resistor mounting circuit, The connection module includes: providing an electrical connection between the first terminal and the fourth terminal; The battery system of claim 10.

12. When a resistor is not electrically connected between one end and the other end of each of the first to third resistor mounted circuits, The first to third resistor mounting circuits are each open between one end and the other end. The battery system of claim 10.

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