Printed circuit board and battery system using same

Abstract

The present invention relates to a printed circuit board and a battery system using same. The printed circuit board comprising: a plurality of BMIC mounting circuits for providing an electrical connection to each of a plurality of corresponding battery cells; and a connection module for providing an electrical connection between a first BMIC mounting circuit located at the outermost side from among the plurality of BMIC mounting circuits, a second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a first connection terminal, wherein the first connection terminal is connected to a master battery management system (MBMS), the connection module provides a connection between the second BMIC mounting circuit and the first connection terminal when a BMIC is not electrically connected to the first BMIC mounting circuit, and 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 when the BMIC is electrically connected to the first BMIC mounting circuit.

Description

Printed circuit board and battery system using the same

[0001] Cross-citation with related application(s)

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2023-0150972, filed November 3, 2023, the entire contents of which are incorporated herein by reference.

[0003] The present invention relates to a printed circuit board and a battery system using the same.

[0004] The battery system may include a plurality of CMCs (Cell Module Controllers) that measure information of each battery module and a master BMS (Master Battery Management System) that controls the plurality of CMCs.

[0005] Each of the plurality of CMCs may include a plurality of Battery Monitoring Integrated Circuits (BMICs), and each BMIC may be connected to a corresponding battery module to measure information of the battery module, such as cell voltage, module voltage, module temperature, etc.

[0006] However, the number of BMICs contained in each of the multiple CMCs may vary depending on the number of battery modules. Multiple CMCs containing different numbers of BMICs may have different layouts.

[0007] The present invention provides a printed circuit board of a CMC capable of configuring different numbers of BMICs, and provides a battery system capable of communicating between a master BMS and a plurality of CMCs capable of configuring different numbers of BMICs for a battery system including a plurality of CMCs.

[0008] According to one aspect of the invention, a printed circuit board comprises a plurality of BMIC mounting circuits providing electrical connections to each of a plurality of corresponding battery cells, and a connection module configured to provide an electrical connection between a first BMIC mounting circuit located at an outermost side of the plurality of BMIC mounting circuits and a second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a first connection terminal, wherein the first connection terminal is 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 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.

[0009] The above 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.

[0010] 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 a connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal.

[0011] The above 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.

[0012] When a resistor is electrically connected between one end and the other end of the third resistor mounting circuit, the connection module can provide an electrical connection between the first terminal and the fourth terminal.

[0013] 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 each one end and the other end may be open.

[0014] 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, wherein each of the plurality of CMCs includes a first connection terminal connected to the MBMS, a plurality of battery monitoring integrated circuits (BMICs) connected to a corresponding plurality of battery modules among the plurality of battery modules, a first BMIC mounting circuit connected to a battery module located at the outermost end of one of the plurality of corresponding battery modules, a second BMIC mounting circuit adjacent to the first BMIC mounting circuit and providing an electrical connection between the corresponding plurality of battery cells and the corresponding BMICs among the plurality of BMICs, and a connection module configured to provide an electrical connection between the first BMIC mounting circuit, the second BMIC mounting circuit, and the MBMS, wherein when the BMIC is not electrically connected to the first BMIC mounting circuit, the connection module is configured to connect the second BMIC mounting circuit and the MBMS. When the BMIC is electrically connected to the first BMIC mounting circuit, the connection module provides a connection between the MBMS and the first BMIC mounting circuit and a connection between the first BMIC mounting circuit and the second BMIC mounting circuit.

[0015] The above 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.

[0016] 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 a connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal.

[0017] The above 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.

[0018] When a resistor is electrically connected between one end and the other end of the third resistor mounting circuit, the connection module can provide an electrical connection between the first terminal and the fourth terminal.

[0019] 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 each one end and the other end may be open.

[0020] According to the present invention, a battery system including a plurality of CMCs having a relatively small number of types of layouts can be provided.

[0021] According to the present invention, a communication connection structure between multiple BMICs and a master BMS can be provided for a CMC having a different number of multiple BMICs included therein.

[0022] According to the present invention, even if the number of BMICs included in each of a plurality of CMCs having the same layout is different, a communication connection structure can be provided in which the last BMIC of each CMC can communicate with the next CMC or a master BMS (Battery Management System).

[0023] According to the present invention, a plurality of CMCs including different numbers of BMICs can be arranged on a battery circuit in various configurations, since this does not necessarily involve layout changes due to differences in the number of BMICs.

[0024] According to the present invention, the number of MDMs (Master Data Management) to be managed according to various CMC configuration forms can be reduced, thereby promoting management convenience.

[0025] According to the present invention, since a plurality of CMCs can have the same layout, in preparation for a circuit in which each CMC performs the same function for each BMIC inside but must configure a different layout depending on the difference in the number of BMICs, the types of CMC layouts on a single battery circuit are reduced, and accordingly, the number of elements to be managed is reduced, making circuit management easier.

[0026] According to the present invention, PCB management can be maintained in the same manner, and it can be advantageous in terms of management by changing the mounting location of the BMIC.

[0027] FIG. 1 is a block diagram schematically illustrating a battery system according to one embodiment.

[0028] FIG. 2 is a block diagram schematically illustrating a substrate of one of the two CMCs illustrated in FIG. 1.

[0029] FIG. 3 is a block diagram schematically illustrating a detailed configuration of one of the two connection modules illustrated in FIG. 1.

[0030] FIG. 4 is a block diagram showing a state in which resistors are mounted on two of the plurality of resistor mounting circuits shown in FIG. 3.

[0031] FIG. 5 is a block diagram schematically illustrating a detailed configuration of a connection module connected to a BMIC mounting circuit in which a BMIC is not mounted among the connection modules illustrated in FIG. 1.

[0032] FIG. 6 is a block diagram showing a state in which a resistor is mounted in one of the plurality of resistor mounting circuits illustrated in FIG. 5.

[0033] Figure 7 is an example diagram of a comparison circuit that does not include a connection module.

[0034] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the attached drawings. The same or similar components will be given the same or similar drawing reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and / or "part" used for components in the following description are given or used interchangeably only for the convenience of writing the specification, and do not in themselves have distinct meanings or roles. In addition, when describing the embodiments disclosed in this specification, if it is determined that a specific description of a related known technology may obscure the gist of the embodiments disclosed in this specification, a detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

[0035] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0036] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0037] Among the configurations according to one embodiment, a configuration that controls another configuration under specific control conditions may be installed with a program implemented as a set of commands that embody the control algorithms necessary to control the other configuration. The control configuration may process input data and stored data according to the installed program to generate output data. The control configuration may include non-volatile memory for storing the program and memory for storing data.

[0038] FIG. 1 is a block diagram schematically illustrating a battery system according to one embodiment.

[0039] 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 (Cell Module Controllers, CMCs) (200, 300), a master battery management system (MBMS) (400), and relays (500, 501).

[0040] Each of the plurality of battery modules (111-114, 121-123) may be implemented with two or more battery cells connected in series, 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) is assumed to include two or more battery cells connected in series.

[0041] One end of the relay (500, 501) is connected to a plurality of battery modules (111-114, 121-113), and the other end of the relay (500, 501) is connected to at least one component in an external device (2). Closing and opening of the relay (500, 501) can be controlled according to a relay control signal (RCS1, RCS2) supplied from the MBMS (400).

[0042] 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. If the external device (2) is a charger, both ends (P+, P-) of the battery system (1) are connected to the charger so that power can be supplied from the charger and charged. If the external device (2) is a load, both ends (P+, P-) of the battery system (1) are connected to the load so that power supplied by the battery pack (10) can be discharged through the load.

[0043] The MBMS (400) can measure voltage, current, insulation resistance, etc. of multiple battery modules (111-114, 121-123), or perform control operations required for measurement. The MBMS (400) can communicate with multiple CMCs (200, 300) in a daisy chain manner. For example, the MBMS (400) can communicate with multiple CMCs (200, 300) via ISO-SPI.

[0044] A plurality of CMCs (200, 300) can measure information of each of the plurality of battery modules (111-114, 121-123) and transmit the measured information to the MBMS (400). The information of each of the plurality of battery modules (111-114, 121-123) can include cell voltages, terminal voltages of each module, module temperatures, etc. of the battery cells provided in each of the plurality of battery modules (111-114, 121-123).

[0045] Each of the plurality of CMCs (200, 300) may be implemented as a printed circuit board (PCB). Each of the plurality of CMCs (200, 300) may include a plurality of battery monitoring integrated circuits (BMICs). Each of the plurality of CMCs (200, 300) may be referred to as a slave BMS in relation to the MBMS (400). The following description of each of the plurality of CMCs (200, 300) may also be viewed as a description of a printed circuit board on which each of the plurality of CMCs (200, 300) is implemented.

[0046] In Fig. 1, the number of CMCs (200, 300) is illustrated as two, but this is for convenience of explanation and the invention is not limited thereto. The battery system (1) may include two or more CMCs.

[0047] Also, in FIG. 1, the number of the plurality of battery modules (111-114, 121-123) is 7, and among these, the number of battery modules (111-114) connected to the CMC (200) is 4, and the number of battery modules (121-123) connected to the CMC (300) is 3. However, this is for convenience of explanation and the invention is not limited thereto. The battery system (1) includes 4 or more battery modules, and each of the plurality of CMCs can be connected to 2 or more battery modules.

[0048] The CMC (200) may include two terminals (P21_1, P21_2), a plurality of BMIC mounting circuits (221-224), a plurality of BMICs (231-234), a connection module (240), and a plurality of wires (LN21-LN24). The plurality of BMIC mounting circuits (221-224) may represent a plurality of circuits including a plurality of vias formed to mount each BMIC and a plurality of terminals to be connected to a plurality of battery cells. The two terminals (P21_1, P21_2) may be terminals formed to connect the CMC (200) to at least one remaining CMC (300) among the plurality of CMCs (200, 300) and the MBMS (300) in a daisy chain manner.

[0049] Hereinafter, the number of BMIC mounting circuits (221-224) is described as four, but this is only for convenience of explanation and the invention is not limited thereto. The CMC (200) may include a plurality of BMIC mounting circuits depending on the number of corresponding modules (111-114) among the plurality of battery modules (111-114, 121-123).

[0050] A corresponding BMIC (e.g., 231) among the plurality of BMICs (231-234) may be mounted on each of the plurality of BMIC mounting circuits (221-224) (e.g., 221). Each of the plurality of BMIC mounting circuits (221-224) (e.g., 221) may provide an 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 mounting 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) can be connected to both ends of each of the plurality of battery cells included in the corresponding battery module (111).

[0051] A plurality of BMIC mounting circuits (221-224) can be connected in a daisy chain manner. The BMIC mounting circuit (221) can be electrically connected to a terminal (P21_1) and can be electrically connected to a BMIC mounting circuit (222). The BMIC mounting circuit (222) can be electrically connected to a BMIC mounting circuit (223). The BMIC mounting circuit (223) can be electrically connected to a connection module (240) via a wire (LN21). The BMIC mounting circuit (224) can be electrically connected to a connection module (240) via a wire (LN22) and a wire (LN23). The connection module (240) can be electrically connected to a terminal (P21_2) via a wire (LN24). The wiring formed inside the CMC (200) below can be implemented as internal wiring (traces) on the substrate on which the CMC (200) is implemented.

[0052] 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 representing a voltage from each of the plurality of battery cells included in the battery module (111) and derive a cell voltage of each of the plurality of battery cells included in the battery module (111). The BMIC (232) may receive a signal representing a voltage from each of the plurality of battery cells included in the battery module (112) and derive a cell voltage of each of the plurality of battery cells included in the battery module (112). The BMIC (233) may receive a signal representing a voltage from each of the plurality of battery cells included in the battery module (113) and derive a cell voltage of each of the plurality of battery cells included in the battery module (113). BMIC (234) can receive a signal representing a voltage from each terminal of a plurality of battery cells included in the battery module (114) and derive a cell voltage of each of the plurality of battery cells included in the battery module (114).

[0053] A plurality of BMICs (231-233) can communicate in a daisy chain manner. A group of BMICs (231) among the plurality of 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.

[0054] Among the plurality of BMIC mounting circuits (221-224), a mounting circuit (e.g., 224) located at the outermost side can be connected to a battery module (e.g., 114) located at the outermost side among the battery modules (111-114) corresponding to the CMC (200). A BMIC (234) may or may not be mounted on the mounting circuit (e.g., 224) located at the outermost side among the plurality of BMIC mounting circuits (221-224) depending on the number and configuration of the plurality of battery modules (111-114, 121-123).

[0055] The CMC (300) may include two terminals (P31_1, P31_2), a plurality of BMIC mounting circuits (321-324), a plurality of BMICs (331-334), a connection module (340), and a plurality of wires (LN31-LN34). The plurality of BMIC mounting circuits (321-324) may represent a plurality of circuits including a plurality of vias formed to mount each BMIC and a plurality of terminals to be connected to a plurality of battery cells. The two terminals (P31_1, P31_2) may be terminals formed to connect the CMC (300) to at least one remaining CMC (200) among the plurality of CMCs (200, 300) and the MBMS (300) in a daisy chain manner.

[0056] Hereinafter, the number of BMIC mounting circuits (321-324) is described as four, but this is only for convenience of explanation and the invention is not limited thereto. The CMC (300) may include a plurality of BMIC mounting circuits depending on the number of corresponding modules (121-123) among the plurality of battery modules (111-114, 121-123).

[0057] A corresponding BMIC (e.g., 331) among the plurality of BMICs (331-334) may be mounted on 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 an 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 (e.g., 321-323) except for the outermost mounting circuit (e.g., 324) among the plurality of BMIC mounting circuits (321-324), each of the three BMICs (331-333) (e.g., 331) can 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) (e.g., 331) can be connected to both ends of each of the plurality of battery cells included in the corresponding battery module (e.g., 121).

[0058] A plurality of BMIC mounting circuits (321-324) can be connected in a daisy chain manner. The BMIC mounting circuit (321) can be electrically connected to a terminal (P31_1) and can be electrically connected to a BMIC mounting circuit (322). The BMIC mounting circuit (322) can be electrically connected to a BMIC mounting circuit (323). The BMIC mounting circuit (323) can be electrically connected to a connection module (340) via a wire (LN31). The BMIC mounting circuit (324) can be electrically connected to a connection module (240) via a wire (LN32) and a wire (LN33). The connection module (340) can be electrically connected to a terminal (P31_2) via a wire (LN34). The wiring formed inside the CMC (300) below can be implemented as internal wiring (traces) on the substrate on which the CMC (300) is implemented.

[0059] Among the plurality of BMIC mounting circuits (321-324), each of the remaining (e.g., 321-323) circuits (e.g., 331) except for the outermost mounting circuit (e.g., 324) may be connected to each of the opposite ends of the plurality of battery cells included in the corresponding battery module (e.g., 121) among the plurality of battery modules (121-123). The BMIC (331) may receive a signal representing a voltage from each of the opposite ends of the plurality of battery cells included in the battery module (121) and derive a cell voltage of each of the plurality of battery cells included in the battery module (121). The BMIC (332) may receive a signal representing a voltage from each of the opposite ends of the plurality of battery cells included in the battery module (122) and derive a cell voltage of each of the plurality of battery cells included in the battery module (122). BMIC (333) can receive a signal representing a voltage from each terminal of a plurality of battery cells included in the battery module (123) and derive a cell voltage of each of the plurality of battery cells included in the battery module (123).

[0060] Among the plurality of BMIC mounting circuits (321-324), a plurality of BMICs (331-333) electrically connected to the remaining (e.g., 321-323) except for the outermost mounting circuit (e.g., 324) can communicate in a daisy chain manner. A BMIC (331) among 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.

[0061] Among the plurality of BMIC mounting circuits (321-324), a mounting circuit (e.g., 324) located at the outermost side 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 way, a BMIC (334) may or may not be mounted on the mounting circuit (e.g., 324) located at the outermost side among the plurality of BMIC mounting circuits (321-324).

[0062] In Fig. 1, a BMIC (234) is mounted on a BMIC mounting circuit (224) and a BMIC (334) is not mounted on a BMIC mounting circuit (324). However, this is only for convenience of explanation and the invention is not limited thereto. Hereinafter, an embodiment in which a BMIC (234) is mounted on a BMIC mounting circuit (224) through a CMC (200) will be described, and another embodiment in which a BMIC (334) is not mounted on a BMIC mounting circuit (324) through a CMC (300) will be described.

[0063] 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 communicate. The connector (401) may be connected to a terminal (P21_1) via wiring. The terminal (P21_2) may be connected to the terminal (P31_1). The terminal (P31_2) may be connected to the connector (401). Each of 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 (Wireharness).

[0064] Each of the plurality of CMCs (200, 300) (e.g., 200) may provide a power path for daisy chaining communication between the plurality of BMIC mounting circuits (e.g., 221-224) and the BMIC mounting circuit (e.g., 221-224) in which the BMIC is mounted, in the case where the BMIC is mounted on each of the two BMIC mounting circuits (224, 324) and where the BMIC is not mounted. 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.

[0065] In FIG. 1, it is illustrated that a CMC (200) includes a connection module (240) connected to a BMIC mounting circuit (224), which is one of the outermost sides of a plurality of BMIC mounting circuits (221-224), and a CMC (300) includes a connection module (340) connected to a BMIC mounting circuit (324), which is one of the outermost sides of a plurality of BMIC mounting circuits (321-324), but this is for convenience of explanation and the invention is not limited thereto. Each of a plurality of CMCs (200, 300) may include one or more connection modules.

[0066] In some embodiments, the CMC may include a first connection module connected to a BMIC mounting circuit (e.g., 224) located at the outermost side of a plurality of BMIC mounting circuits (e.g., 221-224) and a second connection module connected to a BMIC mounting circuit (e.g., 221) located at the outermost side of the other plurality of BMIC mounting circuits (e.g., 221-224). In other embodiments, the connection module of the CMC may be connected to a BMIC mounting circuit (e.g., 221) located at the outermost side of the other plurality of BMIC mounting circuits (e.g., 221-224).

[0067] The connection module (240) can be connected to a BMIC mounting circuit (224) located at the outermost side among the plurality of BMIC mounting circuits (221-224), a BMIC mounting circuit (223) adjacent to the BMIC mounting circuit (224) located at the outermost side among the plurality of BMIC mounting circuits (221-224), and a terminal (P21_2). The connection module (240) can be connected to the BMIC mounting circuit (223) through a wire (LN21). The connection module (240) can be connected to the BMIC mounting circuit (224) through a wire (LN22) and a wire (LN23). The connection module (240) can be connected to the terminal (P21_2) through a wire (LN24).

[0068] The connection module (240) can connect three BMIC mounting circuits (221-223) excluding the BMIC mounting circuit (224) located at the outermost side among the plurality of BMIC mounting circuits (221-224) in a daisy chain manner through a power path including a wiring (LN21) and a wiring (LN24). Alternatively, the connection module (240) can connect four BMIC mounting circuits (221-224) in a daisy chain manner through a power path including a wiring (LN21), a wiring (LN22), a wiring (LN23), and a wiring (LN24).

[0069] The connection module (340) can be connected to a BMIC mounting circuit (324) located at the outermost side among a plurality of BMIC mounting circuits (321-324), a BMIC mounting circuit (323) adjacent to the BMIC mounting circuit (324) located at the outermost side among a plurality of BMIC mounting circuits (321-324), and a terminal (P31_2). The connection module (340) can be connected to the BMIC mounting circuit (323) through a wire (LN31). The connection module (340) can be connected to the BMIC mounting circuit (324) through a wire (LN32). The connection module (340) can be connected to the terminal (P31_2) through a wire (LN34).

[0070] The connection module (340) can connect three BMIC mounting circuits (321-323) excluding the BMIC mounting circuit (324) located at the outermost side among the plurality of BMIC mounting circuits (321-324) in a daisy chain manner through a power path including a wiring (LN31) and a wiring (LN34). Alternatively, the connection module (340) can connect four BMIC mounting circuits (321-324) in a daisy chain manner through a power path including a wiring (LN31), a wiring (LN32), a wiring (LN33), and a wiring (LN34).

[0071] FIG. 2 is a block diagram schematically illustrating a substrate of one of the two CMCs illustrated in FIG. 1.

[0072] Referring to FIG. 2, one of the two terminals (P21_1, P21_2) (e.g., P21_1) may be connected to the MBMS (401) via wiring, and the other of the two terminals (P21_1, P21_2) (e.g., P21_2) may be connected to a terminal (e.g., P31_1) of another CMC (e.g., 300 in FIG. 1) via wiring. The terminal (P21_2) may be connected to one end of the wiring (LN24).

[0073] The BMIC mounting 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 in which each of the pins of the BMIC chip is mounted. The BMIC (231) illustrated in FIG. 1 may be mounted on the BMIC mounting circuit (221) by having the pins of the BMIC (231) chip plugged into the plurality of vias (V2211, V2212, V2213_1-V2213_m1).

[0074] Each of the plurality of vias (V2213_1-V2213_m1) (e.g., V2213_1) can be electrically connected to a corresponding connection terminal (e.g., 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 constituting the battery module (111).

[0075] The via (V2211) can be electrically connected to the connection terminal (P2211). The connection terminal (P2211) can be connected to the terminal (P21_1) via wiring. The via (V2212) can be electrically connected to the connection terminal (P2212).

[0076] The BMIC mounting 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). Here, m2 may be a natural number greater than or equal to 3. Each of the plurality of vias (V2221, V2222, V2223_1-V2223_m2) may include a via hole in which each of the pins of the BMIC chip is mounted. The BMIC (232) illustrated in FIG. 1 may be mounted on the BMIC mounting circuit (222) by having the pins of the BMIC (232) chip plugged into the plurality of vias (V2221, V2222, V2223_1-V2223_m2).

[0077] Each of the plurality of vias (V2223_1-V2223_m2) (e.g., V2223_1) can be electrically connected to a corresponding connection terminal (e.g., 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 constituting the battery module (112).

[0078] 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 mounting circuit (221) through wiring. The via (V2222) can be electrically connected to the connection terminal (P2222).

[0079] The BMIC mounting 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 in which each of the pins of the BMIC chip is mounted. The BMIC (233) illustrated in FIG. 1 may be mounted on the BMIC mounting circuit (223) by having the pins of the BMIC (233) chip plugged into the plurality of vias (V2231, V2232, V2233_1-V2233_m3).

[0080] Each of the plurality of vias (V2233_1-V2233_m3) (e.g., V2233_1) 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 constituting the battery module (113).

[0081] 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 mounting circuit (222) via a wire. The via (V2232) can be electrically connected to the connection terminal (P2232). The connection terminal (P2232) can be connected to one end of the wire (LN21).

[0082] The BMIC mounting 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). Here, 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 in which each of the pins of the BMIC chip is mounted. The BMIC (234) illustrated in FIG. 1 may be mounted on the BMIC mounting circuit (224) by having the pins of the BMIC (234) chip plugged into the plurality of vias (V2241, V2242, V2243_1-V2243_m4).

[0083] Each of the plurality of vias (V2243_1-V2243_m3) (e.g., V2243_1) 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 constituting the battery module (113).

[0084] 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).

[0085] A connection module (240) may provide an electrical connection between a BMIC mounting circuit (e.g., 224) located at the outermost side among a plurality of BMIC mounting circuits (221-224), a BMIC mounting circuit (e.g., 223) adjacent to the BMIC mounting circuit (e.g., 224) located at the outermost side, and a terminal (P21_2). The connection module (240) may include a plurality of terminals (P24_1-P24_4).

[0086] Terminal (P24_1) is connected to the other end of wiring (LN21), terminal (P24_2) is connected to the other end of wiring (LN22), terminal (24_3) is connected to the other end of wiring (LN23), and terminal (P24_4) can be connected to the other end of wiring (LN24_4).

[0087] When a BMIC is electrically connected to a BMIC mounting circuit (e.g., 224) located at the outermost side among a plurality of BMIC mounting circuits (221-224), the connection module (240) can provide a connection between a BMIC mounting circuit (e.g., 223) adjacent to the BMIC mounting circuit (e.g., 224) located at the outermost side and a terminal (P21_2) through a wiring (LN21) and a wiring (LN24).

[0088] When a BMIC (e.g., 234 in FIG. 1) is electrically connected to a BMIC mounting circuit (e.g., 224) located at the outermost side among a plurality of BMIC mounting circuits (221-224), the connection module (240) can provide a connection between the BMIC mounting circuit (e.g., 224) located at the outermost side and a BMIC mounting circuit (e.g., 223) adjacent to the BMIC mounting circuit (e.g., 224) located at the outermost side through a wiring (LN21) and a wiring (LN22), and can provide a connection between the BMIC mounting circuit (e.g., 224) located at the outermost side and a terminal (P21_2) through a wiring (LN23) and a wiring (LN24).

[0089] FIG. 3 is a block diagram schematically illustrating a detailed configuration of one of the two connection modules illustrated in FIG. 1.

[0090] Referring to FIG. 3, the battery module (114) may include a plurality of battery cells (114_1-114_m4) connected in series. Here, m4 is a natural number greater than or equal to 3. The BMIC mounting circuit (224) may include a plurality of terminals (P2_1-P2_m4, P21, P22).

[0091] Both ends of a 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 a BMIC (234). The BMIC (234) can derive 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). The two terminals (P21, P22) can be connected to the BMIC (234).

[0092] The connection module (240) may include a plurality of terminals (P24_1-P24_4) and a plurality of resistor mounting circuits (241-243). One end of the wiring (LN21) may be connected to a terminal of the BMIC mounting circuit (223) illustrated in FIGS. 1 and 2 (for example, P2232 illustrated in FIG. 2), and the other end of the wiring (LN21) may be connected to the terminal (P24_1). One end of the wiring (LN24) may be connected to the terminal (P21_2) illustrated in FIGS. 1 and 2, and the other end of the wiring (LN24) may be connected to the terminal (P24_4). One end of the wiring (LN22) may be connected to the terminal (P21), and the other end of the wiring (LN22) may be connected to the terminal (P24_2). One end of the wiring (LN23) can be connected to the terminal (P22), and the other end of the wiring (LN23) can be connected to the terminal (P24).

[0093] Each of the plurality of resistor mounting circuits (241-243) may be an area formed such that a resistor is electrically connected between the two ends. The resistor mounting circuit (241) may include both ends (2411a, 2411b) and a mounting area (2412). The resistor mounting circuit (242) may include both ends (2421a, 2421b) and a mounting area (2422). The resistor mounting circuit (243) may include both ends (2431a, 2431b) and a mounting area (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 two ends to which the resistor is connected.

[0094] The resistors mounted in the plurality of resistor mounting circuits (241-243) below may have a resistance value lower than a predetermined reference resistance. For example, in one embodiment, the reference resistance is 0.02 ohms, and the resistor mounting circuit may be mounted with a so-called "0 ohm resistor" having a resistance value lower than 0.02 ohms.

[0095] A resistor may or may not be mounted in each of the plurality of mounting areas (2412, 2422, 2432). If a resistor is not mounted in each of the plurality of mounting areas (2412, 2422, 2432) (e.g., 2412), the terminals (e.g., 2411a, 2411b) of the corresponding resistor mounting circuit (e.g., 241) among the plurality of resistor mounting circuits (241-243) may be open.

[0096] The resistor mounting circuit (241) may be a circuit for providing an electrical connection between a terminal (P24_1) and a terminal (P24_2). One end (2411a) of the resistor mounting circuit (241) may be connected to the terminal (P24_2) via a wiring (LN242). The other end (2411b) of the resistor mounting 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 one end (2411a) and the other end (2411b) of the resistor mounting circuit (241), the connection module (240) may provide an electrical connection between the terminal (P24_1) and the terminal (P24_2). If the resistor is not electrically connected between one end (2411a) and the other end (2411b) of the resistor mounting circuit (241), the connection between one end (2411a) and the other end (2411b) of the resistor mounting circuit (241) may be open.

[0097] The resistor mounting 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 mounting circuit (242) may be connected to a node (ND2_1). The other end (2421b) of the resistor mounting circuit (242) may be connected to a node (ND2_2). The node (ND2_2) may be a node on the wiring (LN244) connected to the terminal (P24_4). When a resistor is electrically connected between one end (2421a) and the other end (2421b) of the resistor mounting circuit (242), the connection module (240) may provide an electrical connection between the terminal (P24_1) and the terminal (P24_4). If the resistor is not electrically connected between one end (2421a) and the other end (2421b) of the resistor mounting circuit (242), the connection between one end (2421a) and the other end (2421b) of the resistor mounting circuit (242) may be open.

[0098] The resistor mounting 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 mounting circuit (243) may be connected to the terminal (P24_3) via a wiring (LN243). The other end (2431b) of the resistor mounting circuit (243) may be connected to the node (ND2_2) via a wiring (LN244). When a resistor is electrically connected between one end (2431a) and the other end (2431b) of the resistor mounting circuit (243), the connection module (240) may provide an electrical connection between the terminal (P24_3) and the terminal (P24_4). If the resistor is not electrically connected between one end (2431a) and the other end (2431b) of the resistor mounting circuit (243), the connection between one end (2431a) and the other end (2431b) of the resistor mounting circuit (243) may be open.

[0099] FIG. 4 is a block diagram showing a state in which resistors are mounted on two of the plurality of resistor mounting circuits shown in FIG. 3.

[0100] Referring to FIG. 4, a resistor (R) can be mounted between the two ends (e.g., 2421a, 2421b) of each of the two resistor mounting circuits (241, 243) (e.g., 241). When a resistor (R) is mounted on each of the two resistor mounting circuits (241, 243), a power path including a wiring (LN21), a terminal (P24_1), a wiring (LN241) (and a node (ND2_1)), a resistor mounting circuit (241), a wiring (LN242), a terminal (P24_2), a wiring (LN22), a terminal (P21), a BMIC (234), a terminal (P22), a wiring (LN23), a terminal (P24_3), a wiring (LN243), a resistor mounting circuit (243), a wiring (LN244) (and a node (ND2_2)), a terminal (P24_4), and a wiring (LN24) can be formed. Since a resistor is not mounted on the resistor mounting circuit (242), the gap between the two ends (2421a, 2421b) is open, and therefore no current flows.

[0101] Referring to FIGS. 1 and 4, a plurality of BMIC mounting circuits (221-224) each electrically connected to a BMIC can be daisy-chained through a power path including a wiring (LN21), a terminal (P24_1), a wiring (LN241) (and a node (ND2_1)), a resistor mounting circuit (241), a wiring (LN242), a terminal (P24_2), a wiring (LN22), a terminal (P21), a BMIC (234), a terminal (P22), a wiring (LN23), a terminal (P24_3), a wiring (LN243), a resistor mounting circuit (243), a wiring (LN244) (and a node (ND2_2)), a terminal (P24_4), and a wiring (LN24).

[0102] FIG. 5 is a block diagram schematically illustrating a detailed configuration of a connection module connected to a BMIC mounting circuit in which a BMIC is not mounted among the connection modules illustrated in FIG. 1.

[0103] Referring to Fig. 5, the BMIC mounting circuit (224) may include a plurality of terminals (P3_1-P3_n, P31, P32). Here, n is a natural number greater than or equal to 3. A BMIC may not be mounted on the BMIC mounting circuit (324).

[0104]

[0105] *96 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 circuit (333) illustrated 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) illustrated 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).

[0106] Each of the plurality of resistor mounting circuits (341-343) may be an area formed so that a resistor is mounted between the two ends. The resistor mounting circuit (341) may include both ends (3411a, 3411b) and a mounting area (3412). The resistor mounting circuit (342) may include both ends (3421a, 3421b) and a mounting area (3422). The resistor mounting circuit (343) may include both ends (3431a, 3431b) and a mounting area (3432).

[0107] The resistors mounted in the plurality of resistor mounting circuits (341-343) below may have a resistance value lower than a predetermined reference resistance. For example, in one embodiment, the reference resistance is 0.02 ohms, and a so-called "0 ohm resistor" having a resistance value lower than 0.02 ohms may be mounted in the resistor mounting circuit.

[0108] A resistor may or may not be mounted in each of the plurality of mounting areas (3412, 3422, 3432). If a resistor is not mounted in each of the plurality of mounting areas (3412, 3422, 3432) (e.g., 3412), the terminals (e.g., 3411a, 3411b) of the corresponding resistor mounting circuit (e.g., 341) among the plurality of resistor mounting circuits (341-343) may be open.

[0109] The resistor mounting 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 mounting circuit (341) may be connected to the terminal (P34_2). The other end (3411b) of the resistor mounting 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 one end (3411a) and the other end (3411b) of the resistor mounting circuit (341), the connection module (340) may provide an electrical connection between the terminal (P34_1) and the terminal (P34_2). If a resistor is not electrically connected between one end (3411a) and the other end (3411b) of the resistor mounting circuit (341), the connection between one end (3411a) and the other end (3411b) of the resistor mounting circuit (341) may be open.

[0110] The resistor mounting 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 mounting circuit (342) may be connected to a node (ND3_1) via a wiring (LN342). The other end (3421b) of the resistor mounting circuit (342) may be connected to a 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 one end (3421a) and the other end (3421b) of the resistor mounting circuit (342), the connection module (340) may provide an electrical connection between the terminal (P34_1) and the terminal (P34_4). If a resistor is not electrically connected between one end (3421a) and the other end (3421b) of the resistor mounting circuit (342), the connection between one end (3421a) and the other end (3421b) of the resistor mounting circuit (342) may be open.

[0111] The resistor mounting 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 mounting circuit (343) may be connected to the terminal (P34_3). The other end (3431b) of the resistor mounting circuit (343) may be connected to the node (ND3_2). When a resistor is electrically connected between one end (3431a) and the other end (3431b) of the resistor mounting circuit (343), the connection module (340) may provide an electrical connection between the terminal (P34_3) and the terminal (P34_4). If a resistor is not electrically connected between one end (3431a) and the other end (3431b) of the resistor mounting circuit (343), the connection between one end (3431a) and the other end (3431b) of the resistor mounting circuit (343) may be open.

[0112] FIG. 6 is a block diagram showing a state in which a resistor is mounted in one of the plurality of resistor mounting circuits illustrated in FIG. 5.

[0113] Referring to Fig. 6, a resistor (R) may be mounted between the two ends (3421a, 3421b) of the resistor mounting circuit (342). When the resistor (R) is mounted on the resistor mounting circuit (342), a power path including a wiring (LN31), a terminal (P34_1), a wiring (LN341), a node (ND3_1), a wiring (LN342), the resistor mounting circuit (342), a wiring (LN343) (node ​​(ND3_2)), a terminal (34_4), and a wiring (LN34) may be formed. Since no resistor is mounted on each of the two resistor mounting circuits (341, 343) (e.g., 341), the two ends (e.g., 3421a, 3421b) are open, and therefore, no current flows.

[0114] Referring to FIGS. 1 and 6, three BMIC mounting circuits (321-323) among a plurality of BMIC mounting circuits (321-324) in which BMICs are electrically connected can be daisy-chained through a power path including a wiring (LN31), a terminal (P34_1), a wiring (LN341), a node (ND3_1), a wiring (LN342), a resistor mounting circuit (342), a wiring (LN343) (and a node (ND3_2)), a terminal (34_4), and a wiring (LN34).

[0115] Figure 7 is an example diagram of a comparison circuit that does not include a connection module.

[0116] The comparison circuit (6) illustrated in Fig. 7 is an example of a battery system, and may include a plurality of battery modules (611-614, 621-623), a plurality of CMCs (700, 800), an MBMS (900), and a relay (1000, 1001). Both ends (P6+, P6-) of the comparison circuit (6) may be connected to an external device (7).

[0117] 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) may be connected to four battery modules (611-614), and the three BMICs (831-833) may be connected to 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 mounting circuit according to one embodiment.

[0118] Two terminals (P71_1, P71_2) are connected to four BMICs (731-734) in a daisy chain manner through internal wiring to communicate, and two terminals (P81_1, P81_2) are connected to three BMICs (831-833) in a daisy chain manner through internal wiring to communicate. In this way, since the two CMCs (700, 800) each include different numbers of BMICs, the two CMCs (700, 800) have different types of internal wiring. According to the comparison circuit (6), the CMC (700) and the CMC (800) can be implemented with different boards.

[0119] The MBMS (900) may include a connector (901). The connector (901) may be connected to the CMC (700) and the CMC (800) in a daisy chain manner to communicate. The connector (901) may be connected to the terminal (P71_1) via wiring. The terminal (P71_2) may be connected to the terminal (P81_1). The terminal (P81_2) may be connected to the connector (901). Each of the connections between the connector (901) and the terminal (P71_1), between the terminal (P71_2) and the terminal (P81_1), and between the terminal (P81_2) and the connector (901) may be connected via external wiring.

[0120] In this way, depending on the battery configuration, CMC requires various applications for various CMC types, and implementation of as many as tens of CMCs may be required per battery pack. In a project that requires such various CMCs, a different printed circuit board and Bill Of Materials (BOM) are applied to each CMC, and in this case, an individual Master Data Management (MDM) may be required. As the number of MDMs in a battery pack increases, management becomes difficult, so a battery system (1) according to one embodiment is provided with a connection module (e.g., 240) for each of a plurality of CMCs (200, 300) (e.g., 200) so that they can be managed with the same printed circuit board, BOM, etc.

[0121] Referring to FIG. 1, in a battery system (1) according to one embodiment, among a plurality of BMIC mounting circuits (221-224) provided inside a CMC (200), BMIC mounting circuits (221-224) in which BMICs are mounted and electrically connected are connected in a daisy chain manner to communicate, and among a plurality of BMIC mounting circuits (321-324) provided inside a CMC (300), BMIC mounting circuits (221-223) in which BMICs are mounted and electrically connected are connected in a daisy chain manner to communicate. In this way, although the two CMCs (200, 300) each include different numbers of BMICs, they have the same form of internal wiring through each connection module (240, 340) and a plurality of wirings connected to each connection module (240, 340). Therefore, the two CMCs (200, 300) can be implemented with the same printed circuit board. In the battery system (1), a power path can be provided differently through a connection module (240, 340) depending on whether a BMIC is mounted on each of a plurality of BMIC mounting circuits (224, 324) in a plurality of CMCs (200, 300) implemented with the same substrate.

[0122] Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by a person having ordinary skill in the art to which the present invention pertains also fall within the scope of the present invention.

Claims

1. A plurality of BMIC mounting circuits providing electrical connections to each of the corresponding plurality of battery cells; and A connection module configured to provide an electrical connection between a first BMIC mounting circuit located at the outermost side of the plurality of BMIC mounting circuits, a second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a first connection terminal, The above first connection terminal is configured to be connected to a Master Battery Management System (MBMS), When the Battery Monitoring Integrated Circuit (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 the 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. Printed circuit board.

2. In paragraph 1, The above connection module, A first resistor mounting circuit having one end connected to a first terminal connected to the second BMIC mounting circuit through a first wiring, and the other end connected to a second terminal connected to the first BMIC mounting circuit through a second wiring; and A second resistor mounting circuit having one end connected to a third terminal connected to the first BMIC mounting circuit through a third wiring, and the other end connected to a fourth terminal connected to the first connection terminal through a fourth wiring. Printed circuit board.

3. In paragraph 2, 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 above connection module, Providing a connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal, Printed circuit board.

4. In paragraph 2, The above connection module, Further comprising a third resistor mounting circuit having one end connected to the first terminal and the other end connected to the fourth terminal. Printed circuit board.

5. In paragraph 4, When a resistor is electrically connected between one end and the other end of the above third resistor mounting circuit, The above connection module, Providing an electrical connection between the first terminal and the fourth terminal, Printed circuit board.

6. In paragraph 4, When the resistor is not electrically connected between one end and the other end of each of the first to third resistor mounting circuits, The space between each of the above ends is open, Printed circuit board.

7. Multiple battery modules connected in series; A plurality of cell module controllers (CMCs) connected to the plurality of battery modules; and Includes a Master Battery Management System (MBMS) that communicates with the above-mentioned multiple CMCs in a daisy chain manner, Each of the above multiple CMCs, A first connection terminal connected to the above MBMS; A plurality of battery monitoring integrated circuits (BMICs) connected to each of the plurality of corresponding battery modules among the plurality of battery modules; A first BMIC mounting circuit connected to a battery module located at the outermost side among the plurality of corresponding battery modules; A second BMIC mounting circuit adjacent to the first BMIC mounting circuit and providing electrical connections between a plurality of corresponding battery cells and a corresponding BMIC among the plurality of BMICs; and A connection module configured to provide an electrical connection between the first BMIC mounting circuit, the second BMIC mounting circuit, and the MBMS, When the 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 MBMS, When the BMIC is electrically connected to the first BMIC mounting circuit, the connection module provides a connection between the MBMS and the first BMIC mounting circuit and a connection between the first BMIC mounting circuit and the second BMIC mounting circuit. Battery system.

8. In paragraph 7, The above connection module, A first resistor mounting circuit having one end connected to a first terminal connected to the second BMIC mounting circuit through a first wiring, and the other end connected to a second terminal connected to the first BMIC mounting circuit through a second wiring; and A second resistor mounting circuit having one end connected to a third terminal connected to the first BMIC mounting circuit through a third wiring, and the other end connected to a fourth terminal connected to the first connection terminal through a fourth wiring. Battery system.

9. In paragraph 8, 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 above connection module, Providing a connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal, Battery system.

10. In paragraph 8, The above connection module, Further comprising a third resistor mounting circuit having one end connected to the first terminal and the other end connected to the fourth terminal. Battery system.

11. In paragraph 10, When a resistor is electrically connected between one end and the other end of the above third resistor mounting circuit, The above connection module, Providing an electrical connection between the first terminal and the fourth terminal, Battery system.

12. In paragraph 10, When the resistor is not electrically connected between one end and the other end of each of the first to third resistor mounting circuits, The space between each of the above ends is open, Battery system.

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