Printed circuit board and battery system using same

Abstract

The invention relates to a printed circuit board and a battery system using the same. The printed circuit board comprises a plurality of BMIC installation circuits used for providing electric connection for each of a plurality of corresponding battery cells; and a connection module for providing an electrical connection between a first BMIC mounting circuit disposed at an outermost side among the plurality of BMIC mounting circuits, a second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a first connection terminal connected to a main battery management system (MBMS), the first BMIC mounting circuit being electrically connected to the first BMIC mounting circuit when the BMIC is not electrically connected to the first BMIC mounting circuit, and the second BMIC mounting circuit being electrically connected to the second BMIC mounting circuit when the BMIC is not electrically connected to the second 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, and 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

Technical Field

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

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

[0003] The present disclosure relates to a printed circuit board and a battery system using the printed circuit board. Background Art

[0004] The battery system may include a plurality of cell module controllers (CMCs) that each measure information of each battery module and a main battery management system (BMS) 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 each corresponding battery module to measure information of the battery module, for example, cell voltage, module voltage, or module temperature.

[0006] However, depending on the number of battery modules, the number of BMICs included in each of the plurality of CMCs may not be constant. A plurality of CMCs including different numbers of BMICs may have different layouts. Summary of the Invention

[0007] Technical issues

[0008] The present disclosure is directed to a printed circuit board (PCB) including a cell module controller (CMC) that can include different numbers of battery monitoring integrated circuits (BMICs), and a battery system that includes multiple CMCs and enables communication between the multiple CMCs that can include different numbers of BMICs and a main battery management system (BMS).

[0009] Technical Solution

[0010] According to one aspect, a printed circuit board (PCB) is provided, comprising: a plurality of battery monitoring integrated circuit (BMIC) mounting circuits, each BMIC mounting circuit providing electrical connections for a plurality of battery cells corresponding thereto; and a connection module providing electrical connections between a first BMIC mounting circuit disposed at the outermost side of one side 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 main battery management system MBMS, and when the BMIC is not electrically connected to the first BMIC mounting circuit, the connection module provides connections between the second BMIC mounting circuit and the first connection terminal, and when the BMIC is electrically connected to the first BMIC mounting circuit, the connection module provides connections between the first connection terminal and the first BMIC mounting circuit and between the first BMIC mounting circuit and the second BMIC mounting circuit.

[0011] The connection module may include: a first resistor mounting circuit, one end of the first resistor mounting circuit being connected to a first terminal, the first terminal being connected to the second BMIC mounting circuit via a first wiring, and the other end of the first resistor mounting circuit being connected to a second terminal, the second terminal being connected to the first BMIC mounting circuit via a second wiring; and a second resistor mounting circuit, one end of the second resistor mounting circuit being connected to a third terminal, the third terminal being connected to the first BMIC mounting circuit via a third wiring, and the other end of the second resistor mounting circuit being connected to a fourth terminal, the fourth terminal being connected to the first connection terminal via a fourth wiring.

[0012] A resistor can be electrically connected between one end and the other end of the first resistor mounting circuit, and when the 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.

[0013] 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.

[0014] A resistor is electrically connected between one end and the other end of the third resistor mounting circuit, and the connection module may provide an electrical connection between the first terminal and the fourth terminal.

[0015] When there is no electrically connected resistor between one end and the other end of each of the first resistor mounting circuit, the second resistor mounting circuit and the third resistor mounting circuit, each of the first resistor mounting circuit, the second resistor mounting circuit and the third resistor mounting circuit can be open-circuited between one end and the other end thereof.

[0016] According to another aspect, a battery system is provided, comprising: a plurality of battery modules connected in series; a plurality of cell module controllers (CMCs), the plurality of CMCs being connected to the plurality of battery modules; and a master battery management system (MBMS), the MBMS communicating with the plurality of CMCs in a daisy-chain manner, wherein each of the plurality of CMCs comprises: a first connection terminal connected to the MBMS; a plurality of battery monitoring integrated circuits (BMICs), each BMIC being connected to each of a corresponding plurality of battery modules among the plurality of battery modules; a first BMIC mounting circuit, the first BMIC mounting circuit being connected to a battery module disposed at the outermost side of one side among the corresponding plurality of battery modules among the plurality of battery modules; and a second BMIC a mounting circuit, wherein the second BMIC mounting circuit is adjacent to the first BMIC mounting circuit and provides electrical connections between a plurality of battery cells corresponding thereto and corresponding BMICs among the plurality of BMICs; and a connection module, wherein the connection module provides electrical connections between the first BMIC mounting circuit, the second BMIC mounting circuit, and the MBMS, and when the BMIC is not electrically connected to the first BMIC mounting circuit, the connection module provides connections between the second BMIC mounting circuit and the MBMS, and when the BMIC is electrically connected to the first BMIC mounting circuit, the connection module provides connections between the MBMS and the first BMIC mounting circuit, and between the first BMIC mounting circuit and the second BMIC mounting circuit.

[0017] The connection module may include: a first resistor mounting circuit, one end of the first resistor mounting circuit being connected to a first terminal, the first terminal being connected to the second BMIC mounting circuit via a first wiring, and the other end of the first resistor mounting circuit being connected to a second terminal, the second terminal being connected to the first BMIC mounting circuit via a second wiring; and a second resistor mounting circuit, one end of the second resistor mounting circuit being connected to a third terminal, the third terminal being connected to the first BMIC mounting circuit via a third wiring, and the other end of the second resistor mounting circuit being connected to a fourth terminal, the fourth terminal being connected to the first connection terminal via a fourth wiring.

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

[0019] 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.

[0020] When a resistor is electrically connected between one end and the other end of the third resistor mounting circuit, the connection module may provide an electrical connection between the first terminal and the fourth terminal.

[0021] When there is no electrically connected resistor between one end and the other end of each of the first resistor mounting circuit, the second resistor mounting circuit and the third resistor mounting circuit, each of the first resistor mounting circuit, the second resistor mounting circuit and the third resistor mounting circuit can be open-circuited between one end and the other end thereof.

[0022] Beneficial effects

[0023] As described above, the present disclosure may provide a battery system including a plurality of CMCs having fewer types of layouts.

[0024] The present disclosure may provide a communication connection structure between multiple BMICs and a master BMS for a CMC including different numbers of BMICs therein.

[0025] The present disclosure may provide a communication connection structure in which the last BMIC of each CMC can communicate with the next CMC or a master battery management system (BMS) even when a plurality of CMCs having the same layout include different numbers of BMICs.

[0026] According to the present disclosure, a plurality of CMCs including different numbers of BMICs may not necessarily involve layout changes due to the difference in the number of BMICs and thus be provided in various configuration types on a battery circuit.

[0027] According to the present disclosure, the number of master data management (MDM) to be managed can be reduced based on various CMC configuration types, thereby improving management efficiency.

[0028] According to the present disclosure, multiple CMCs can have the same layout. Therefore, compared to a circuit where each CMC performs the same function for each internal BMIC, requiring a different layout based on the number of BMICs, the number of CMC layout types within a single battery circuit can be reduced, thereby reducing the number of components to be managed, which can facilitate circuit management.

[0029] The present disclosure may be advantageous in terms of management by maintaining the same PCB management and changing the mounting location of the BMIC. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a block diagram schematically illustrating a battery system according to an embodiment.

[0031] Figure 2 It is schematically shown Figure 1 Block diagram of a board for one of the two cell module controllers (CMCs) shown.

[0032] Figure 3 It is schematically shown Figure 1 Block diagram of the detailed configuration of one of the two connection modules shown.

[0033] Figure 4 is shown where the resistor is mounted Figure 3 A block diagram showing the state of two of the multiple resistor installation circuits shown.

[0034] Figure 5 is schematically shown in Figure 1 A block diagram showing a detailed configuration of a connection module connected to a battery monitoring integrated circuit (BMIC) mounting circuit that does not have a BMIC mounted thereon, among the connection modules shown.

[0035] Figure 6 is shown where the resistor is mounted Figure 5 Block diagram showing the status of one of the multiple resistor mounting circuits shown.

[0036] Figure 7 This is an example diagram of a comparison circuit excluding the connection module. DETAILED DESCRIPTION

[0037] Hereinafter, embodiments of the present disclosure are described in detail with reference to the accompanying drawings, and the same or similar components are represented by the same or similar reference numerals, and their overlapping descriptions are omitted. The terms "module" and / or "unit" for components described in the following description are only used to make the specification easy to understand. Therefore, these terms themselves do not have meanings or roles that distinguish one from another. In addition, when describing the embodiments of the present disclosure, detailed descriptions of situations where the detailed description of known technologies related to the present disclosure may obscure the main points are omitted. In addition, it should be understood that the drawings are provided only to make the embodiments of the present disclosure easy to understand, and the spirit of the present disclosure is not limited to the drawings, and includes all modifications, equivalents and replacements included in the spirit and scope of the present disclosure.

[0038] Terms including ordinal numbers such as "first" and "second" may be used to describe various components. However, these components are not limited to these terms. These terms are only used to distinguish one component from another.

[0039] It should also be understood that terms such as “including” and “having” used in this application specify the presence of features, quantities, steps, operations, components, parts, or a combination thereof mentioned in the specification, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, components, parts, or a combination thereof.

[0040] According to an embodiment, a program implemented as an instruction set embodying a control algorithm necessary to control another configuration can be installed in a configuration for controlling the other configuration under specific control conditions within the configuration. The control configuration can generate output data by processing input data and stored data based on the installed program. The control configuration may include a non-volatile memory for storing the program and a memory for storing data.

[0041] Figure 1 is a block diagram schematically illustrating a battery system according to an embodiment.

[0042] Reference Figure 1 The battery system 1 may include a plurality of battery modules 111 to 114 and 121 to 123 , a plurality of cell module controllers (CMCs) 200 and 300 , a master battery management system (MBMS) 400 , and relays 500 and 501 .

[0043] The plurality of battery modules 111 to 114 and 121 to 123 may each be implemented as two or more battery cells connected in series, and the plurality of battery cells may include two or more battery cells connected in parallel and in series, or two or more battery cells connected in parallel. Hereinafter, for ease of description, it is assumed that the plurality of battery modules 111 to 114 and 121 to 123 each include two or more battery cells connected in series.

[0044] The relay 500 or 501 may have one end connected to the plurality of battery modules 111 to 114 or 121 to 123 and the other end connected to at least one component of the external device 2. Closing and opening of the relay 500 or 501 may be controlled based on the relay control signal RCS1 or RCS2 provided from the MBMS 400.

[0045] The battery system 1 can be connected to an external device 2. The external device 2 may include a load or a charging device, such as an inverter or converter. When the external device 2 is a charger, the terminals P+ and P- of the battery system 1 can be connected to the charger and supplied with power for charging. When the external device 2 is a load, both the terminals P+ and P- of the battery system 1 can be connected to the load, and the power supplied by the battery pack 10 can be discharged through the load.

[0046] The MBMS 400 can measure the voltage, current, insulation resistance, and the like of each of the plurality of battery modules 111 to 114 and 121 to 123, or perform control operations required for the measurements. The MBMS 400 can be connected to and communicate with the plurality of CMCs 200 and 300 in a daisy-chain manner. For example, the MBMS 400 can communicate with the plurality of CMCs 200 and 300 via an isolated serial peripheral interface (ISO-SPI).

[0047] The plurality of CMCs 200 and 300 may each measure information of the plurality of battery modules 111 to 114 and 121 to 123 and transmit the information to the MBMS 400. The information of the plurality of battery modules 111 to 114 and 121 to 123 may include a cell voltage of each battery cell provided in the plurality of battery modules 111 to 114 and 121 to 123, a voltage across each module, a module temperature, and the like.

[0048] Each of the multiple CMCs 200 and 300 can be implemented on a printed circuit board (PCB). Each of the multiple CMCs 200 and 300 can include multiple battery monitoring integrated circuits (BMICs). Each of the multiple CMCs 200 and 300 can be considered a slave BMS in relationship to the MBMS 400. The following description of the multiple CMCs 200 and 300 can also be considered a description of the printed circuit board on which each of the multiple CMCs 200 and 300 is implemented.

[0049] Figure 1 The number of the plurality of CMCs 200 and 300 is shown to be two, which is described for convenience of description, and the present disclosure is not limited thereto. The battery system 1 may include two or more CMCs.

[0050] in addition, Figure 1The plurality of battery modules 111 to 114 and 121 to 123 are shown as seven battery modules. Of these battery modules, four battery modules 111 to 114 are connected to the CMC 200, and three battery modules 121 to 123 are connected to the CMC 300. This is for convenience of description, and the present disclosure is not limited thereto. The battery system 1 may include four or more battery modules, and each of the plurality of CMCs may be connected to two or more battery modules.

[0051] CMC 200 may include two terminals P21_1 and P21_2, multiple BMIC mounting circuits 221 to 224, multiple BMICs 231 to 234, a connection module 240, and multiple wiring lines LN21 to LN24. The multiple BMIC mounting circuits 221 to 224 may indicate multiple circuits including multiple through-holes formed to mount corresponding BMICs and multiple terminals connected to multiple battery cells. The two terminals P21_1 and P21_2 may be terminals formed to allow CMC 200 to be daisy-chained to MBMS 300 and at least one remaining CMC 300 among the multiple CMCs 200 and 300.

[0052] Hereinafter, the number of the plurality of BMIC mounting circuits 221 to 224 is described as four, which is merely for the sake of convenience and the present disclosure is not limited thereto. The CMC 200 may include a plurality of BMIC mounting circuits depending on the number of corresponding modules 111 to 114 among the plurality of battery modules 111 to 114 and 121 to 123.

[0053] Each of the plurality of BMIC mounting circuits 221 to 224 (e.g., circuit 221) may have its corresponding BMIC (e.g., BMIC 231) among the plurality of BMICs 231 to 234. Each of the plurality of BMIC mounting circuits 221 to 224 (e.g., circuit 221) may provide electrical connections between the plurality of battery cells included in its corresponding battery module (e.g., module 111) among the plurality of battery modules 111 to 114 and its corresponding BMIC (e.g., BMIC 231) among the plurality of BMICs 231 to 234. When the plurality of BMICs 231 to 234 are electrically connected to the plurality of BMIC mounting circuits 221 to 224, each of the plurality of BMICs 231 to 234 (e.g., BMIC 231) may be connected to both ends of its corresponding battery module 111 among the plurality of battery modules 111 to 114. In detail, each of the plurality of BMICs 231 to 234 (eg, the BMIC 231 ) may be connected to both ends of a plurality of battery cells included in its corresponding battery module 111 .

[0054] Multiple BMIC mounting circuits 221 to 224 can be connected to each other in a daisy-chain manner. BMIC mounting circuit 221 can be electrically connected to terminal P21_1 and to BMIC mounting circuit 222. BMIC mounting circuit 222 can be electrically connected to BMIC mounting circuit 223. BMIC mounting circuit 223 can be electrically connected to connection module 240 via wiring LN21. BMIC mounting circuit 224 can be electrically connected to connection module 240 via wiring LN21 and wiring LN23. Connection module 240 can be electrically connected to terminal P21_2 via wiring LN24. The wiring formed inside CMC 200 described below can be implemented as internal wiring (traces) on the board on which CMC 200 is implemented.

[0055] Each of the plurality of BMICs 231 to 234 (e.g., BMIC 231) may be connected to both ends of a plurality of battery cells included in its corresponding battery module (e.g., module 111) among the plurality of battery modules 111 to 114. BMIC 231 may receive a signal indicating a voltage across each of the plurality of battery cells included in battery module 111 and obtain a cell voltage for each of the plurality of battery cells included in battery module 111. BMIC 232 may receive a signal indicating a voltage across each of the plurality of battery cells included in battery module 112 and obtain a cell voltage for each of the plurality of battery cells included in battery module 112. BMIC 233 may receive a signal indicating a voltage across each of the plurality of battery cells included in battery module 113 and obtain a cell voltage for each of the plurality of battery cells included in battery module 113. The BMIC 234 may receive a signal indicating a voltage across each of the 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 .

[0056] Multiple BMICs 231 to 233 can be connected to each other in a daisy-chain manner. BMIC 231, provided at one end of the multiple BMICs 231 to 233, can communicate with terminal P21_1 to transmit and receive signals and / or data. BMIC 231 can communicate with BMIC 232 to transmit and receive signals and / or data. BMIC 232 can communicate with BMIC 233 to transmit and receive signals and / or data. BMIC 233 can communicate with BMIC 234 to transmit and receive signals and / or data.

[0057] The mounting circuit (e.g., circuit 224) disposed at the outermost side of one side among the plurality of BMIC mounting circuits 221 to 224 may be connected to a battery module (e.g., module 114) disposed at the outermost side of the battery modules 111 to 114 corresponding to the CMC 200. The mounting circuit (e.g., circuit 224) disposed at the outermost side of one side among the plurality of BMIC mounting circuits 221 to 224 may or may not have the BMIC 334 mounted thereon, depending on the number and configuration of the plurality of battery modules 111 to 114 and 121 to 123.

[0058] The CMC 300 may include two terminals P31_1 and P31_2, multiple BMIC mounting circuits 321 to 324, multiple BMICs 331 to 334, a connection module 340, and multiple wiring lines LN31 to LN34. The multiple BMIC mounting circuits 321 to 324 may indicate multiple circuits including multiple through-holes formed to mount corresponding BMICs and multiple terminals connected to multiple battery cells. The two terminals P31_1 and P31_2 may be terminals formed to allow the CMC 300 to be daisy-chained to the MBMS 300 and at least one remaining CMC 200 among the multiple CMCs 200 and 300.

[0059] Hereinafter, the number of the plurality of BMIC mounting circuits 321 to 324 is described as four, which is merely for the sake of convenience and the present disclosure is not limited thereto. The CMC 300 may include a plurality of BMIC mounting circuits depending on the number of corresponding modules 121 to 123 among the plurality of battery modules 111 to 114 and 121 to 123.

[0060] Each of the plurality of BMIC mounting circuits 321 to 324 (e.g., circuit 321) may have its corresponding BMIC (e.g., BMIC 331) among the plurality of BMICs 331 to 334. Each of the plurality of BMIC mounting circuits 321 to 324 (e.g., circuit 321) may provide electrical connection between the plurality of battery cells included in its corresponding battery module (e.g., module 121) among the plurality of battery modules 121 to 123 and its corresponding BMIC (e.g., BMIC 331) among the plurality of BMICs 331 to 334. When the three BMICs 331 to 333 are electrically connected to the remaining mounting circuits (e.g., circuits 321 to 323) of the plurality of BMIC mounting circuits 321 to 324, excluding the mounting circuit (e.g., circuit 324) disposed at the outermost side of one side, each of the three BMICs 331 to 333 (e.g., BMIC 331) can be connected to both ends of its corresponding battery module (e.g., module 121) among the plurality of battery modules 121 to 123. Specifically, each of the plurality of BMICs 331 to 333 (e.g., BMIC 331) can be connected to both ends of each of the plurality of battery cells included in its corresponding battery module (e.g., module 121).

[0061] Multiple BMIC mounting circuits 321 to 324 can be connected to each other in a daisy-chain manner. BMIC mounting circuit 321 can be electrically connected to terminal P31_1 and to BMIC mounting circuit 322. BMIC mounting circuit 322 can be electrically connected to BMIC mounting circuit 323. BMIC mounting circuit 323 can be electrically connected to connection module 340 via wiring LN31. BMIC mounting circuit 324 can be electrically connected to connection module 340 via wiring LN32 and wiring LN33. Connection module 340 can be electrically connected to terminal P31_2 via wiring LN34. The wiring formed inside CMC 300 described below can be implemented as internal wiring (traces) on the board on which CMC 300 is implemented.

[0062] Each of the remaining circuits (e.g., circuits 321 to 323) among the plurality of BMIC mounting circuits 321 to 324, excluding the mounting circuit (e.g., circuit 324) disposed at the outermost side of one side, (e.g., BMIC 331) can be connected to both ends of each of the plurality of battery cells included in its corresponding battery module (e.g., module 121) among the plurality of battery modules 121 to 123. BMIC 331 can receive a signal indicating the voltage across each of the plurality of battery cells included in battery module 121 and obtain the cell voltage of each of the plurality of battery cells included in battery module 121. BMIC 332 can receive a signal indicating the voltage across each of the plurality of battery cells included in battery module 122 and obtain the cell voltage of each of the plurality of battery cells included in battery module 122. BMIC 333 can receive a signal indicating the voltage across each of the plurality of battery cells included in battery module 123 and obtain the cell voltage of each of the plurality of battery cells included in battery module 123.

[0063] The plurality of BMICs 331 to 333 are electrically connected to the remaining circuits (e.g., circuits 321 to 323) of the plurality of BMIC mounting circuits 321 to 324, excluding the mounting circuit (e.g., circuit 324) located at the outermost side of one side, and can communicate with each other in a daisy-chain manner. BMIC 331, located at one end of the plurality of BMICs 331 to 333, can communicate with terminal P31_1 to transmit and receive signals and / or data. BMIC 331 can communicate with BMIC 332 to transmit and receive signals and / or data. BMIC 332 can communicate with BMIC 333 to transmit and receive signals and / or data. BMIC 333 can communicate with BMIC 334 to transmit and receive signals and / or data.

[0064] The mounting circuit (e.g., circuit 324) disposed on the outermost side of one side among the plurality of BMIC mounting circuits 321 to 324 may not be connected to a battery module because there is no corresponding battery module corresponding to the CMC 300 among the battery modules 121 to 123. As described above, the mounting circuit (e.g., circuit 324) disposed at the outermost side of one side among the plurality of BMIC mounting circuits 321 to 324 may or may not have the BMIC 334 mounted thereon.

[0065] Figure 1The BMIC 234 is shown as being mounted on the BMIC mounting circuit 224 and the BMIC 334 is not mounted on the BMIC mounting circuit 324. This is for ease of description and the present disclosure is not limited thereto. The following description describes an embodiment in which the BMIC 234 is mounted on the BMIC mounting circuit 224 via the CMC 200 and another embodiment in which the BMIC 334 is not mounted on the BMIC mounting circuit 324 via the CMC 300.

[0066] MBMS 400 may include connector 401. Connector 401 can be connected to CMCs 200 and 300 in a daisy-chain manner and communicate therewith. Connector 401 can be connected to terminal P21_1 via wiring. Terminal P21_2 can be connected to terminal P31_1. Terminal P31_2 can be connected to connector 401. Connector 401 and terminal P21_1, terminal P21_2 and terminal P31_1, and terminal P31_2 and connector 401 can each be connected via external wiring (wiring harness).

[0067] In a case where a BMIC is mounted on each of the two BMIC mounting circuits 224 and 324 or is not mounted on each of the two BMIC mounting circuits 224 and 324, each of the plurality of CMCs 200 and 300 (e.g., CMC 200) can provide a power path for connecting and communicating with the BMIC mounting circuits (e.g., circuits 221 to 224) on which the BMIC is mounted, among the plurality of BMIC mounting circuits (e.g., circuits 221 to 224) in a daisy-chain manner. Each of the plurality of CMCs 200 and 300 (e.g., CMC 200) can include a connection module (e.g., 240) for providing the power path.

[0068] Figure 1 CMC 200 is shown as including a connection module 240 connected to BMIC mounting circuit 224, which is one of the outermost of the plurality of BMIC mounting circuits 221 to 224, and CMC 300 is shown as including a connection module 340 connected to BMIC mounting circuit 324, which is one of the outermost of the plurality of BMIC mounting circuits 321 to 324. This is for convenience of description and the present disclosure is not limited thereto. Each of the plurality of CMCs 200 and 300 may include at least one connection module.

[0069] In some embodiments, the CMC may include a first connection module connected to a BMIC mounting circuit (e.g., circuit 224) located at the outermost side of one side among a plurality of BMIC mounting circuits (e.g., circuits 221 to 224), and a second connection module connected to a BMIC mounting circuit (e.g., circuit 221) located at the other outermost side of the plurality of BMIC mounting circuits (e.g., circuits 221 to 224). In another embodiment, the connection module of the CMC may be connected to a BMIC mounting circuit (e.g., circuit 221) located at the other outermost side of the plurality of BMIC mounting circuits (e.g., circuits 221 to 224).

[0070] The connection module 240 can be connected to the BMIC mounting circuit 224 located at the outermost side of the plurality of BMIC mounting circuits 221 to 224, the BMIC mounting circuit 223 adjacent to the BMIC mounting circuit 224 located at the outermost side of the plurality of BMIC mounting circuits 221 to 224, and the terminal P21_2. The connection module 240 can be connected to the BMIC mounting circuit 223 via the wiring LN21. The connection module 240 can be connected to the BMIC mounting circuit 224 via the wiring LN21 and the wiring LN23. The connection module 240 can be connected to the terminal P21_2 via the wiring LN24.

[0071] The connection module 240 may connect the remaining three BMIC mounting circuits 221 to 223 to one another in a daisy-chain manner, excluding the BMIC mounting circuit 224 disposed at the outermost side of one side among the plurality of BMIC mounting circuits 221 to 224, via a power path including the wiring LN21 and the wiring LN24. Alternatively, the connection module 240 may connect the four BMIC mounting circuits 221 to 224 to one another in a daisy-chain manner via a power path including the wiring LN21, the wiring LN22, the wiring LN23, and the wiring LN24.

[0072] The connection module 340 can be connected to the BMIC mounting circuit 324 located at the outermost side of the plurality of BMIC mounting circuits 321 to 324, the BMIC mounting circuit 323 adjacent to the BMIC mounting circuit 324 located at the outermost side of the plurality of BMIC mounting circuits 321 to 324, and the terminal P21_2. The connection module 340 can be connected to the BMIC mounting circuit 323 via the wiring LN31. The connection module 240 can be connected to the BMIC mounting circuit 324 via the wiring LN32 and the wiring LN32. The connection module 340 can be connected to the terminal P31_2 via the wiring LN34.

[0073] The connection module 340 may connect the remaining three BMIC mounting circuits 321 to 323 to one another in a daisy-chain manner, excluding the BMIC mounting circuit 324 disposed at the outermost side of one side, among the plurality of BMIC mounting circuits 321 to 324, via a power path including the wiring LN31 and the wiring LN34. Alternatively, the connection module 340 may connect the four BMIC mounting circuits 321 to 324 to one another in a daisy-chain manner via a power path including the wiring LN31, the wiring LN32, the wiring LN33, and the wiring LN34.

[0074] Figure 2 It is schematically shown Figure 1 A block diagram of one of the two cell module controller (CMC) boards shown.

[0075] Reference Figure 2 , one of the two terminals P21_1 and P21_2 (eg, terminal P21_1) may be connected to the MBMS 401 via wiring, and the other of the two terminals P21_1 and P21_2 (eg, terminal P21_2) may be connected to another CMC (eg, Figure 1 The terminal P21_2 may be connected to one end of the wiring LN24.

[0076] The BMIC mounting circuit 221 may include a plurality of connection terminals P2211, P2212, and P2213_1 to P2213_m1 and a plurality of through holes V2211, V2212, and V2213_1 to V2213_m1. Here, m1 may be a natural number greater than or equal to 3. Each of the plurality of through holes V2211, V2212, and V2213_1 to V2213_m1 may include a through hole in which each chip pin of the BMIC is mounted. Figure 1 In the illustrated BMIC 231 , chip pins of the BMIC 231 may be inserted into a plurality of through-holes V2211 , V2212 , and V2213_1 to V2213_m1 and mounted on the BMIC mounting circuit 221 .

[0077] Each of the plurality of through-holes V2213_1 to V2213_m1 (e.g., through-hole V2213_1) can be electrically connected to its corresponding connection terminal (e.g., terminal P2213_1) among the plurality of connection terminals (terminals P2213_1 to P2213_m1). The connection terminals P2213_1 to 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 and included in the battery module 111.

[0078] The via V2211 may be electrically connected to the connection terminal P2211. The connection terminal P2211 may be connected to the terminal P21_1 via a wiring. The via V2212 may be electrically connected to the connection terminal P2212.

[0079] The BMIC mounting circuit 222 may include a plurality of connection terminals P2221, P2222, and P2223_1 to P2223_m2 and a plurality of through holes V2221, V2222, and V2223_1 to V2223_m2. Here, m2 may be a natural number greater than or equal to 3. Each of the plurality of through holes V2221, V2222, and V2223_1 to V2223_m2 may include a through hole in which each chip pin of the BMIC is mounted. Figure 1 In the illustrated BMIC 232 , chip pins of the BMIC 232 may be inserted into a plurality of through-holes V2221 , V2222 , and V2223_1 to V2223_m2 and mounted on the BMIC mounting circuit 222 .

[0080] Each of the plurality of through-holes V2223_1 to V2223_m2 (e.g., through-hole V2223_1) can be electrically connected to its corresponding connection terminal (e.g., terminal P2223_1) among the plurality of connection terminals (terminals P2223_1 to P2223_m2). The connection terminals P2223_1 to 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 and included in the battery module 112.

[0081] The through-hole V2221 may be electrically connected to the connection terminal P2221. The connection terminal P2221 may be connected to the connection terminal P2212 of the BMIC mounting circuit 221 via a wiring. The through-hole V2222 may be electrically connected to the connection terminal P2222.

[0082] The BMIC mounting circuit 223 may include a plurality of connection terminals P2231, P2232, and P2233_1 to P2233_m3 and a plurality of through holes V2231, V2232, and V2233_1 to V2233_m3. Here, m3 may be a natural number greater than or equal to 3. Each of the plurality of through holes V2231, V2232, and V2233_1 to V2233_m3 may include a through hole in which each chip pin of the BMIC is mounted. Figure 1 In the illustrated BMIC 233 , chip pins of the BMIC 232 may be inserted into a plurality of through-holes V2231 , V2232 , and V2233_1 to V2233_m3 and mounted on the BMIC mounting circuit 223 .

[0083] Each of the plurality of through-holes V2233_1 to V2233_m3 (e.g., through-hole V2233_1) can be electrically connected to its corresponding connection terminal (e.g., terminal P2233_1) among the plurality of connection terminals (terminals P2233_1 to P2233_m3). The connection terminals P2223_1 to 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 and included in the battery module 113.

[0084] The through-hole V2231 may be electrically connected to the connection terminal P2231. The connection terminal P2231 may be connected to the connection terminal P2222 of the BMIC mounting circuit 222 via a wiring. The through-hole V2232 may be electrically connected to the connection terminal P2232. The connection terminal P2232 may be connected to one end of the wiring LN21.

[0085] The BMIC mounting circuit 224 may include a plurality of connection terminals P2241, P2242, and P2243_1 to P2243_m4 and a plurality of through holes V2241, V2242, and V2243_1 to V2243_m4. Here, m4 may be a natural number greater than or equal to 3. Each of the plurality of through holes V2241, V2242, and V2243_1 to V2243_m4 may include a through hole in which each chip pin of the BMIC is mounted. Figure 1 In the illustrated BMIC 234 , chip pins of the BMIC 234 may be inserted into a plurality of through-holes V2241 , V2242 , and V2243_1 to V2243_m4 and mounted on the BMIC mounting circuit 224 .

[0086] Each of the plurality of through-holes V2243_1 to V2243_m3 (e.g., through-hole V2243_1) can be electrically connected to its corresponding connection terminal (e.g., terminal P2243_1) among the plurality of connection terminals (terminals P2243_1 to P2243_m4). The connection terminals P2233_1 to 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 and included in the battery module 113.

[0087] 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.

[0088] The connection module 240 can provide electrical connections between the BMIC mounting circuit (e.g., circuit 224) located at the outermost side of the plurality of BMIC mounting circuits 221 to 224, the BMIC mounting circuit (e.g., circuit 223) adjacent to the BMIC mounting circuit (e.g., circuit 224) located at the outermost side of the plurality of BMIC mounting circuits 221 to 224, and the terminal P21_2. The connection module 240 can include a plurality of terminals P24_1 to P24_4.

[0089] The terminal P24_1 may be connected to the other end of the wiring LN21 , the terminal P24_2 may be connected to the other end of the wiring LN22 , the terminal 24_3 may be connected to the other end of the wiring LN23 , and the terminal P24_4 may be connected to the other end of the wiring LN24_4 .

[0090] When the BMIC is electrically connected to a BMIC mounting circuit (e.g., circuit 224) disposed at the outermost side of one side among the plurality of BMIC mounting circuits 221 to 224, the connection module 240 may provide connection between a BMIC mounting circuit (e.g., circuit 223) adjacent to the BMIC mounting circuit (e.g., circuit 224) disposed at the outermost side of one side and the terminal P21_2 via the wiring LN21 and the wiring LN24.

[0091] When BMIC (e.g. Figure 1 When the BMIC 234 in the circuit 221 is electrically connected to the BMIC mounting circuit (e.g., 224) set at the outermost side of one side among the multiple BMIC mounting circuits 221 to 224, the connection module 240 can provide a connection between the BMIC mounting circuit (e.g., circuit 224) set at the outermost side of one side and a BMIC mounting circuit (e.g., circuit 223) adjacent to the BMIC mounting circuit (e.g., circuit 224) set at the outermost side of one side via the wiring LN21 and the wiring LN22, and provide a connection between the BMIC mounting circuit (e.g., circuit 224) set at the outermost side of one side and the terminal P21_2 via the wiring LN23 and the wiring LN24.

[0092] Figure 3 It is schematically shown Figure 1 Block diagram of the detailed configuration of one of the two connection modules shown.

[0093] Reference Figure 3 The battery module 114 may include a plurality of battery cells 114_1 to 114_m4 connected in series, wherein m4 is a natural number greater than or equal to 3. The BMIC mounting circuit 224 may include a plurality of terminals P2_1 to P2_m4, P21, and P22.

[0094] Both ends of each of the plurality of battery cells 114_1 to 114_m may be connected to each of the plurality of terminals P2_1 to P2_m4. The plurality of terminals P2_1 to P2_m may be connected to a BMIC 234. The BMIC 234 may derive the voltage across each of the plurality of battery cells 114_1 to 114_m based on signals received from the plurality of terminals P2_1 to P2_m. The two terminals P21 and P22 may be connected to the BMIC 234.

[0095] The connection module 240 may include a plurality of terminals P24_1 to P24_4 and a plurality of resistor mounting circuits 241 to 243. One end of the wiring LN21 may be connected to Figure 1 and Figure 2 The terminals of the BMIC mounting circuit 223 shown (eg, Figure 2 The other end of the wiring LN21 is connected to the terminal P24_1. One end of the wiring LN24 can be connected to the terminal P22_2. Figure 1 and Figure 2 One end of wiring LN22 can be connected to terminal P21, and the other end of wiring LN22 is connected to terminal P24_2. One end of wiring LN23 can be connected to terminal P22, and the other end of wiring LN23 is connected to terminal P24.

[0096] Each of the plurality of resistor mounting circuits 241 to 243 may be an area formed to allow a resistor to be electrically connected between its two ends. The resistor mounting circuit 241 may include two ends 2411a and 2411b and a mounting area 2412. The resistor mounting circuit 242 may include two ends 2421a and 2421b and a mounting area 2422. The resistor mounting circuit 243 may include two ends 2431a and 2431b and a mounting area 2432. When a resistor is connected between the two ends of each of the plurality of resistor mounting circuits 241 to 243, an electrical connection may be provided between the two ends to which the resistor is connected.

[0097] Each resistor mounted on the plurality of resistor mounting circuits 241 to 243 described below may have a resistance value smaller than a predetermined reference resistor. For example, in an embodiment, the reference resistor may be 0.02 ohms, and the resistor mounting circuit may have a resistor called a "0 ohm resistor" having a resistance value smaller than 0.02 ohms mounted thereon.

[0098] Each of the plurality of mounting areas 2412, 2422, and 2432 may or may not have a resistor mounted thereon. When no resistor is mounted on each of the plurality of mounting areas 2412, 2422, and 2432 (e.g., area 2412), the corresponding resistor mounting circuit (e.g., circuit 241) among the plurality of resistor mounting circuits 241 to 243 may be open-circuited between both ends (e.g., end portions 2411a and 2411b).

[0099] The resistor mounting 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 mounting circuit 241 may be connected to the terminal P24_2 via wiring LN242. The other end 2411b of the resistor mounting circuit 241 may be connected to the node ND2_1 via 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. When no resistor is electrically connected between one end 2411a and the other end 2411b of the resistor mounting circuit 241, the resistor mounting circuit 241 may be open circuited between one end 2411a and the other end 2411b.

[0100] 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 the node ND2_1. The other end 2421b of the resistor mounting circuit 242 may be connected to the 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 the 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. When no resistor is electrically connected between the one end 2421a and the other end 2421b of the resistor mounting circuit 242, the resistor mounting circuit 242 may be open circuited between the one end 2421a and the other end 2421b.

[0101] 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 wiring LN243. The other end 2431b of the resistor mounting circuit 243 may be connected to the node ND2_2 via 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. When no resistor is electrically connected between one end 2431a and the other end 2431b of the resistor mounting circuit 243, the resistor mounting circuit 243 may be open circuited between one end 2431a and the other end 2431b.

[0102] Figure 4 is shown where the resistor is mounted Figure 3 A block diagram showing the state of two of the multiple resistor installation circuits shown.

[0103] Reference Figure 4 , the resistor R may be mounted between both ends (e.g., ends 2421a and 2421b) of each of the two resistor mounting circuits 241 and 243 (e.g., resistor 241). When the resistor R is mounted on each of the two resistor mounting circuits 241 and 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 mounting circuit 241, the wiring LN242, the terminal P24_2, the wiring LN22, the terminal P21, the BMIC 234, the terminal P22, the wiring LN23, the terminal P24_3, the wiring LN243, the resistor mounting circuit 243, the wiring LN244 (and the node ND2_2), the terminal P24_4, and the wiring LN24. The resistor mounting circuit 242 may not have a resistor mounted thereon, and thus the circuit may be open between the ends 2421 a and 2421 b , thereby preventing any current from flowing.

[0104] Reference Figure 1 and Figure 4 , multiple BMIC mounting circuits 221 to 224, each electrically connected to the BMIC, can be connected in a daisy-chain manner via a power path including the wiring LN21, the terminal P24_1, the wiring LN241 (and the node ND2_1), the resistor mounting circuit 241, the wiring LN242, the terminal P24_2, the wiring LN22, the terminal P21, the BMIC 234, the terminal P22, the wiring LN23, the terminal P24_3, the wiring LN243, the resistor mounting circuit 243, the wiring LN244 (and the node ND2_2), the terminal P24_4 and the wiring LN24.

[0105] Figure 5 is schematically shown in Figure 1 A block diagram showing a detailed configuration of a connection module connected to a battery monitoring integrated circuit (BMIC) mounting circuit that does not have a BMIC mounted thereon, among the connection modules shown.

[0106] Reference Figure 5 The BMIC mounting circuit 224 may include a plurality of terminals P3_1 to P3_n, P31, and P32, wherein n is a natural number greater than or equal to 3. The BMIC mounting circuit 324 may not have a BMIC mounted thereon.

[0107] The connection module 340 may include a plurality of terminals P34_1 to P34_4 and a plurality of resistor mounting circuits 341 to 343. One end of the wiring LN31 may be connected to Figure 1 The BMIC 333 shown in FIG. 1 and the other end of the wiring LN31 are connected to the terminal P34_1. One end of the wiring LN2 can be connected to Figure 1 The wiring LN33 can be connected to the terminal P32, and the other end of the wiring LN33 is connected to the terminal P34_3.

[0108] Each of the plurality of resistor mounting circuits 341 to 343 may be an area formed to allow a resistor to be mounted between both ends of the circuit. The resistor mounting circuit 341 may include both ends 3411a and 3411b and a mounting area 3412. The resistor mounting circuit 342 may include both ends 3421a and 3421b and a mounting area 3422. The resistor mounting circuit 343 may include both ends 3431a and 3431b and a mounting area 3432.

[0109] Each resistor mounted on the plurality of resistor mounting circuits 341 to 343 described below may have a resistance value smaller than a predetermined reference resistor. For example, in an embodiment, the reference resistor may be 0.02 ohms, and the resistor mounting circuit may have a resistor called a "0 ohm resistor" having a resistance value smaller than 0.02 ohms mounted thereon.

[0110] Each of the plurality of mounting areas 3412, 3422, and 3432 may or may not have a resistor mounted thereon. When no resistor is mounted on each of the plurality of mounting areas 3412, 3422, and 3432 (e.g., area 3412), the corresponding resistor mounting circuit (e.g., circuit 341) among the plurality of resistor mounting circuits 341 to 343 may be open-circuited between both ends (e.g., end portions 3411a and 3411b).

[0111] 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 a 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. When no resistor is electrically connected between one end 3411a and the other end 3411b of the resistor mounting circuit 341, the resistor mounting circuit 341 may be open circuited between one end 3411a and the other end 3411b.

[0112] 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 the node ND3_1 via wiring LN342. The other end 2431b of the resistor mounting circuit 342 may be connected to the node ND3_2 via 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. When no resistor is electrically connected between one end 3421a and the other end 3421b of the resistor mounting circuit 342, the resistor mounting circuit 342 may be open circuited between one end 3421a and the other end 3421b.

[0113] The resistor installation circuit 343 can be a circuit for providing an electrical connection between the terminal P34_3 and the terminal P34_4. One end 3431a of the resistor installation circuit 343 can be connected to the terminal P34_3. The other end 3431b of the resistor installation circuit 343 can 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 installation circuit 343, the connection module 340 can provide an electrical connection between the terminal P34_3 and the terminal P34_4. When no resistor is electrically connected between the one end 3431a and the other end 3431b of the resistor installation circuit 343, the resistor installation circuit 343 can be open circuited between the one end 3431a and the other end 3431b.

[0114] Figure 6 is shown where the resistor is mounted Figure 5 Block diagram showing the status of one of the multiple resistor mounting circuits shown.

[0115] Reference Figure 6 , the resistor R may be mounted between the two ends 3421a and 3421b of the resistor mounting circuit 342. When the resistor R is mounted on the resistor mounting circuit 342, a power path may be formed, which includes the wiring LN31, the terminal P34_1, the wiring LN341, the node ND3_1, the wiring LN342, the resistor mounting circuit 342, the wiring LN343 (node ​​ND3_2), the terminal P34_4, and the wiring LN34. Each of the two resistor mounting circuits 341 and 343 (for example, the circuit 341) may not have a resistor mounted thereon, and therefore the circuit may be open between the two ends 3421a and 3421b, thereby preventing any current from flowing.

[0116] Reference Figure 1 and Figure 6 , three BMIC mounting circuits 321 to 323 electrically connected to the BMIC among the multiple BMIC mounting circuits 321 to 324 can be connected in a daisy-chain manner through a power path including the wiring LN31, the terminal P34_1, the wiring LN341, the node ND3_1, the wiring LN342, the resistor mounting circuit 342, the wiring LN343 (and the node ND3_2), the terminal P34_4 and the wiring LN34.

[0117] Figure 7 This is an example diagram of a comparison circuit excluding the connection module.

[0118] As an example of a battery system, Figure 7The illustrated comparison circuit 6 may include a plurality of battery modules 611 to 614 and 621 to 623, a plurality of CMCs 700 and 800, an MBMS 900, and relays 1000 and 1001. Both ends P6+ and P6- of the comparison circuit 6 may be connected to an external device 7.

[0119] The CMC 700 may include two terminals P71_1 and P71_2 and four BMICs 731 to 734, and the CMC 800 may include two terminals P81_1 and P81_2 and three BMICs 831 to 833. The four BMICs 731 to 734 may be connected to the four battery modules 611 to 614, and the three BMICs 831 to 833 may be connected to the three battery modules 621 to 623. According to an embodiment, each of the four BMICs 731 to 734 and the three BMICs 831 to 833 may be electrically connected to a circuit corresponding to the BMIC mounting circuit.

[0120] The two terminals P71_1 and P71_2 can be connected to and communicate with four BMICs 731 to 734 in a daisy-chain manner via internal wiring, and the two terminals P81_1 and P81_2 can be connected to and communicate with three BMICs 831 to 833 in a daisy-chain manner via internal wiring. In this way, the two CMCs 700 and 800 can each include a different number of BMICs, and therefore, the two CMCs 700 and 800 can have different types of internal wiring. Based on the comparison circuit 6, CMCs 700 and 800 can be implemented on different boards.

[0121] MBMS 900 may include a connector 901. Connector 901 can be connected to CMCs 700 and 800 in a daisy-chain manner and communicate therewith. Connector 901 can be connected to terminal P71_1 via wiring. Terminal P71_2 can be connected to terminal P81_1. Terminal P81_2 can be connected to connector 901. Connector 901 and terminal P71_1, terminal P71_2 and terminal P81_1, and terminal P81_2 and connector 901 can each be connected via external wiring (wiring harness).

[0122] As described above, depending on the battery configuration, CMCs may be required for various applications using different CMC types, and each battery pack may need to implement up to dozens of CMCs. In projects requiring such a variety of CMCs, each CMC may use a different printed circuit board and bill of materials (BOM), which may require separate master data management (MDM). As a battery pack uses more MDMs, their management may become difficult. Therefore, the battery system 1 according to an embodiment may have a connection module (e.g., module 240) included in each of the multiple CMCs 200 and 300 (e.g., CMC 200), and thus be managed using the same printed circuit board, BOM, etc.

[0123] Reference Figure 1 In the battery system 1 according to the embodiment, the BMIC mounting circuits 221 to 224, each having a BMIC mounted thereon and electrically connected to one another within the CMC 200, can be connected and communicated with one another in a daisy-chain manner. Furthermore, the BMIC mounting circuits 321 to 323, each having a BMIC mounted thereon and electrically connected to one another within the CMC 300, can be connected and communicated with one another in a daisy-chain manner. As described above, although the two CMCs 200 and 300 include different numbers of BMICs, the CMCs can have the same type of internal wiring, including the plurality of wiring connected to the respective 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 , the plurality of CMCs 200 and 300 implemented on the same board may provide different power paths through the connection modules 240 and 340 according to whether a BMIC is mounted on each of the plurality of BMIC mounting circuits 224 and 324 .

[0124] Although the embodiments of the present disclosure have been described in detail above, the scope of the present disclosure is not limited thereto, and various modifications and improvements made by those skilled in the art to which the present disclosure pertains also fall within the scope of the present disclosure.

Claims

1. A printed circuit board (PCB), comprising: Multiple battery monitoring integrated circuit (BMIC) mounting circuits, each BMIC mounting circuit providing electrical connections for a corresponding plurality of battery cells; as well as a connection module that provides electrical connection between a first BMIC mounting circuit disposed at the outermost side of one side among the plurality of BMIC mounting circuits, a second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a first connection terminal; The first connection terminal is connected to the main battery management system 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 first connection terminal, and When the 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.

2. The PCB according to claim 1, wherein The connection module includes: a first resistor mounting circuit having one end connected to a first terminal and the other end connected to a second terminal, the first terminal being connected to the second BMIC mounting circuit via a first wiring, and the second terminal being connected to the first BMIC mounting circuit via a second wiring; and a second resistor mounting circuit, one end of the second resistor mounting circuit being connected to a third terminal, and the other end of the second resistor mounting circuit being connected to a fourth terminal, the third terminal being connected to the first BMIC mounting circuit via a third wiring, and the fourth terminal being connected to the first connection terminal via a fourth wiring.

3. The PCB according to claim 2, wherein: A resistor is electrically connected between one end and the other end of the first resistor mounting circuit, and when the resistor is electrically connected between one end and the other end of the second resistor mounting circuit, The connection module provides: An electrical connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal.

4. The PCB according to claim 2, wherein The connection module also includes: a third resistor mounting circuit having one end connected to the first terminal and the other end connected to the fourth terminal.

5. The PCB according to claim 4, wherein When a resistor is electrically connected between one end and the other end of the third resistor installation circuit, The connection module provides: An electrical connection between the first terminal and the fourth terminal.

6. The PCB according to claim 4, wherein When no resistor is electrically connected between one end and the other end of each of the first resistor mounting circuit, the second resistor mounting circuit, and the third resistor mounting circuit, Each of the first resistor mounting circuit, the second resistor mounting circuit, and the third resistor mounting circuit is open between one end and the other end thereof.

7. A battery system, comprising: multiple battery modules connected in series; a plurality of cell module controllers CMC, the plurality of CMCs being connected to the plurality of battery modules; as well as a master battery management system MBMS, the MBMS communicating with the plurality of CMCs in a daisy-chain manner, Each of the plurality of CMCs comprises: a first connection terminal, the first connection terminal being connected to the MBMS, a plurality of battery monitoring integrated circuits BMIC, each BMIC being connected to each of a corresponding plurality of battery modules among the plurality of battery modules; a first BMIC mounting circuit connected to a corresponding battery module disposed at an outermost side of one side among the plurality of battery modules; a second BMIC mounting circuit adjacent to the first BMIC mounting circuit and providing electrical connections between a plurality of battery cells corresponding to the second BMIC mounting circuit and corresponding BMICs among the plurality of BMICs; and a connection module, the connection module providing 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, and 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.

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

9. The system according to claim 8, wherein: A resistor is electrically connected between one end and the other end of the first resistor mounting circuit, and when the resistor is electrically connected between one end and the other end of the second resistor mounting circuit, The connection module provides: An electrical connection between the first terminal and the second terminal and an electrical connection between the third terminal and the fourth terminal.

10. The system according to claim 8, wherein: The connection module also includes: a third resistor mounting circuit having one end connected to the first terminal and the other end connected to the fourth terminal.

11. The system according to claim 10, wherein: When a resistor is electrically connected between one end and the other end of the third resistor installation circuit, The connection module provides: An electrical connection between the first terminal and the fourth terminal.

12. The system according to claim 10, wherein: When no resistor is electrically connected between one end and the other end of each of the first resistor mounting circuit, the second resistor mounting circuit, and the third resistor mounting circuit, Each of the first resistor mounting circuit, the second resistor mounting circuit, and the third resistor mounting circuit is open between one end and the other end thereof.

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