Battery and operation method thereof

Abstract

A battery according to an embodiment disclosed in the present document may comprise: a first measurement unit for measuring a first voltage which is the voltage between a first bus bar connecting a first battery cell and a second battery cell and a second bus bar connecting a third battery cell and a fourth battery cell and transferring the first voltage to a management unit; a second measurement unit for measuring a second voltage which is the voltage between a third bus bar connecting the second battery cell and the third battery cell and a fourth bus bar connecting the fourth battery cell and a fifth battery cell and transferring the second voltage to the management unit; and the management unit for calculating the voltage of the third battery cell by performing a mathematical operation for the first voltage and the second voltage.

Description

Battery and its operation method

[0001] Cross-citation with related applications

[0002] This invention claims the benefit of priority from Korean Patent Application No. 10-2023-0190771, filed on December 26, 2023, and all contents of the document in that Korean Patent Application are incorporated herein by reference.

[0003] Technology field

[0004] The embodiments disclosed in this document relate to a battery and a method of operating the same.

[0005] Recently, active research and development has been conducted on secondary batteries. The term "secondary battery" refers to a rechargeable battery, encompassing both conventional Ni / Cd and Ni / MH batteries, as well as recent lithium-ion batteries. Among secondary batteries, lithium-ion batteries have the advantage of a much higher energy density than conventional Ni / Cd and Ni / MH batteries. Furthermore, lithium-ion batteries can be manufactured in small, lightweight designs, making them ideal power sources for portable devices. Furthermore, lithium-ion batteries are gaining traction as a next-generation energy storage medium, with their applications expanding to include power sources for electric vehicles.

[0006] A battery may include a battery module configured with multiple battery cells connected in series. However, if the multiple battery cells connected in series have a battery cell form with a long distance between electrodes (e.g., a bidirectional tab pouch cell), there is a problem in that a sensing line must be configured from each of the two electrodes of each battery cell to an ICB (Inter Connected Board) or module BMS to measure the voltage of each battery cell, and the voltage data must be transmitted to an upper controller using a separate wireless IC.

[0007] One purpose of the embodiments disclosed in this document is to provide a battery and an operating method thereof capable of efficiently measuring battery cell voltage.

[0008] One purpose of the embodiments disclosed in this document is to provide a battery and a method of operating the same, which can simplify the internal configuration and / or wiring of the battery.

[0009] The technical problems of the embodiments disclosed in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the descriptions below.

[0010] A battery according to one embodiment disclosed in the present document may include a first measuring unit that measures a first voltage, which is a voltage between a first bus bar connecting a first battery cell and a second battery cell, and a second bus bar connecting a third battery cell and a fourth battery cell, and transmits the first voltage to a management unit, a second measuring unit that measures a second voltage, which is a voltage between a third bus bar connecting the second battery cell and the third battery cell, and a fourth bus bar connecting the fourth battery cell and a fifth battery cell, and transmits the second voltage to the management unit, and a management unit that mathematically calculates the first voltage and the second voltage to calculate the voltage of the third battery cell.

[0011] In one embodiment, the management unit can divide the first voltage in half to produce a first intermediate voltage and a second intermediate voltage, respectively.

[0012] In one embodiment, the management unit can derive a third intermediate voltage by subtracting the second intermediate voltage from the second voltage.

[0013] In one embodiment, the management unit can divide the second voltage in half to produce a fourth intermediate voltage and a fifth intermediate voltage, respectively.

[0014] In one embodiment, the management unit can obtain a sixth intermediate voltage by averaging the third intermediate voltage and the fourth intermediate voltage.

[0015] In one embodiment, the management unit can calculate the voltage of the third battery cell by differentiating the sixth intermediate voltage from the second voltage.

[0016] In one embodiment, the management unit can calculate the voltage of at least one of the first battery cell, the second battery cell, and the fourth battery cell using the voltage of the third battery cell.

[0017] In one embodiment, the first measuring unit and the second measuring unit may each include a wireless communication module for communicating with the management unit.

[0018] A method of operating a battery according to one embodiment disclosed in the present document may include an operation of measuring a first voltage, which is a voltage between a first bus bar connecting a first battery cell and a second battery cell and a second bus bar connecting a third battery cell and a fourth battery cell, an operation of measuring a second voltage, which is a voltage between a third bus bar connecting the second battery cell and the third battery cell and a fourth bus bar connecting the fourth battery cell and a fifth battery cell, and an operation of mathematically calculating the first voltage and the second voltage to calculate a voltage of the third battery cell.

[0019] In one embodiment, the operation of mathematically calculating the first voltage and the second voltage to calculate the voltage of the third battery cell may include an operation of dividing the first voltage in half to calculate a first intermediate voltage and a second intermediate voltage, an operation of calculating a third intermediate voltage by subtracting the second intermediate voltage from the second voltage, an operation of dividing the second voltage in half to calculate a fourth intermediate voltage and a fifth intermediate voltage, and an operation of calculating the voltage of the third battery cell using the third intermediate voltage and the fourth intermediate voltage.

[0020] In one embodiment, the operation of calculating the voltage of the third battery cell using the third intermediate voltage and the fourth intermediate voltage may include the operation of obtaining a sixth intermediate voltage by averaging the third intermediate voltage and the fourth intermediate voltage, and the operation of calculating the voltage of the third battery cell by subtracting the sixth intermediate voltage from the second voltage.

[0021] In one embodiment, the method may further include an operation of calculating the voltage of at least one of the first battery cell, the second battery cell, and the fourth battery cell using the voltage of the third battery cell.

[0022] The battery and its operating method according to the embodiments disclosed in this document can efficiently measure battery cell voltage.

[0023] The battery and its operating method according to the embodiments disclosed in this document can simplify the internal configuration and / or wiring of the battery.

[0024] FIG. 1 is a drawing showing a battery according to one embodiment disclosed in this document.

[0025] FIG. 2 is a drawing showing a battery according to one embodiment disclosed in this document in more detail.

[0026] FIG. 3 is a drawing showing the configuration of a battery according to one embodiment disclosed in this document.

[0027] Figures 4 to 6 are flowcharts showing a method of operating a battery according to one embodiment disclosed in this document.

[0028] FIG. 7 shows a computing system executing a method of operating a battery management device according to another embodiment disclosed in this document.

[0029] Hereinafter, embodiments disclosed in this document will be described in detail with reference to exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components are given identical reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments disclosed in this document, detailed descriptions of related known structures or functions will be omitted if they are deemed to hinder understanding of the embodiments disclosed in this document.

[0030] In describing the components of the embodiments disclosed in this document, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components and do not limit the nature, order, or sequence of the components. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments disclosed in this document belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined in this application.

[0031] FIG. 1 is a drawing showing a battery according to one embodiment disclosed in this document.

[0032] Referring to FIG. 1, a battery (100) according to one embodiment disclosed in the present document may include a battery module (110), a battery management device (120), and a relay (130).

[0033] According to various embodiments, the battery (100) may include a battery pack, and the following description will assume that the battery (100) is a battery pack. In addition, FIG. 1 illustrates a case where the battery management device (120) is included within the battery (100), but is not limited thereto, and the battery management device (120) may be configured as a separate device from the battery (100).

[0034] The battery module (110) may include a plurality of battery cells (111, 112, 113, 114, 115). In FIG. 1, the number of battery cells is illustrated as 5, but the present invention is not limited thereto, and the battery module (110) may be configured to include n (n is a natural number greater than or equal to 2) battery cells. According to an embodiment, the plurality of battery cells (111, 112, 113, 114, 115) may be connected in series with each other. The plurality of battery cells (111, 112, 113, 114, 115) may be, but are not limited to, a lithium-ion (Li-ion) battery, a lithium-ion polymer (Li-ion polymer) battery, a nickel-cadmium (Ni-Cd) battery, a nickel-metal hydride (Ni-MH) battery, etc.

[0035] According to various embodiments, when the battery pack (100) has a cell-to-pack (CTP) structure, the battery pack (100) may be configured to include a plurality of battery cells (111, 112, 113, 114, 115) without a separate distinct configuration such as a battery module (110).

[0036] Meanwhile, in FIG. 1, a case is illustrated where there is one battery module (110), but depending on the embodiment, the battery module (110) may be configured in multiple pieces.

[0037] The battery module (110) can supply power to a target device (not shown). For this purpose, the battery module (110) can be electrically connected to the target device. Here, the target device can include an electrical, electronic, or mechanical device that operates by receiving power from a battery pack (100) including a plurality of battery cells (111, 112, 113, 114, 115). For example, the target device can be, but is not limited to, an electric vehicle (EV).

[0038] A battery management device (120) can manage the status of a battery module (110), a plurality of battery cells (111, 112, 113, 114, 115), and / or a battery pack (100). According to various embodiments, the battery management device (120) can include a Battery Management System (BMS), and the operation of the battery management device (120) can be performed by the BMS, as well as by various devices such as a server, a cloud charger, or a charger / discharger.

[0039] According to an embodiment, the battery management device (120) can manage and / or control the state and / or operation of the battery module (110). For example, the battery management device (120) can manage and / or control the state and / or operation of a plurality of battery cells (111, 112, 113, 114, 115) included in the battery module (110). The battery management device (120) can manage charging and / or discharging of the battery module (110).

[0040] In addition, the battery management device (120) can monitor the voltage, current, temperature, etc. of the battery module (110) and / or each of the plurality of battery cells (111, 112, 113, 114, 115) included in the battery module (110). In addition, for monitoring by the battery management device (120), sensors (e.g., gas sensors, temperature sensors, etc.) or various measurement modules not shown may be additionally installed at any location of the battery module (110), the charging / discharging path, or the battery module (110). The battery management device (120) can calculate parameters indicating the state of the battery module (110), such as SOC (State of Charge) or SOH (State of Health), based on the measured values ​​of the monitored voltage, current, temperature, etc.

[0041] In an embodiment, the battery management device (120) can control the operation of the relay (130). For example, the battery management device (120) can short-circuit the relay (130) to supply power to the target device. In addition, the battery management device (120) can short-circuit the relay (130) when a charging device is connected to the battery pack (100). In FIG. 1, one relay (130) is illustrated, but in various embodiments, the relay (120) may be configured in multiple numbers.

[0042] Hereinafter, with reference to FIGS. 2 and 3, the operation of the battery (100) acquiring the voltage of multiple battery cells (111, 112, 113, 114, 115) will be described in more detail.

[0043] FIG. 2 is a drawing showing a battery according to one embodiment disclosed in this document in more detail. FIG. 3 is a drawing showing the configuration of a battery according to one embodiment disclosed in this document.

[0044] Referring to FIGS. 2 and 3, a plurality of battery cells (111, 112, 113, 114, 115) can be connected in series to each other via a busbar.

[0045] According to an embodiment, the plurality of battery cells (111, 112, 113, 114, 115) may have a bidirectional electrode tab structure. For example, the first battery cell (111) may include a (+) electrode tab (positive electrode tab, 111a) and a (-) electrode tab (negative electrode tab, 111b). The second battery cell (112) may include a (+) electrode tab (112a) and a (-) electrode tab (112b). The third battery cell (113) may include a (+) electrode tab (113a) and a (-) electrode tab (113b). The fourth battery cell (114) may include a (+) electrode tab (114a) and a (-) electrode tab (114b). The fifth battery cell (115) may include a (+) electrode tab (115a) and a (-) electrode tab (115b).

[0046] According to an embodiment, the first battery cell (111) and the second battery cell (112) can be connected in series through the first bus bar (11). That is, the first bus bar (11) can electrically connect the (+) electrode tab (111a) of the first battery cell (111) and the (-) electrode tab (112b) of the second battery cell (112).

[0047] Similarly, the third battery cell (113) and the fourth battery cell (114) can be connected in series through the second bus bar (12). That is, the second bus bar (12) can electrically connect the (+) electrode tab (113a) of the third battery cell (113) and the (-) electrode tab (114b) of the fourth battery cell (114).

[0048] Additionally, the second battery cell (112) and the third battery cell (113) can be connected in series through the third bus bar (13). That is, the third bus bar (13) can electrically connect the (+) electrode tab (112a) of the second battery cell (111) and the (-) electrode tab (113b) of the third battery cell (112).

[0049] The fourth battery cell (114) and the fifth battery cell (115) can be connected in series through the fourth bus bar (14). That is, the fourth bus bar (14) can electrically connect the (+) electrode tab (114a) of the fourth battery cell (114) and the (-) electrode tab (115b) of the fifth battery cell (115).

[0050] The first measuring unit (130) can measure the voltage between the first bus bar (11) and the second bus bar (12). According to an embodiment, the first measuring unit (130) can be manufactured in the form of a flexible substrate and placed on the first bus bar (11) and / or the second bus bar (12), but is not limited thereto.

[0051] The first measuring unit (130) may include a first sensing unit (131) and a first wireless communication module (132). The first sensing unit (131) may sense / measure the voltage between the first bus bar (11) and the second bus bar (12) to obtain a first voltage (V1). Here, the first voltage (V1) may be a value that includes the voltages of the second battery cell (112) and the third battery cell (113) connected in series. The first wireless communication module (132) may transmit the measured first voltage (V1) to the management unit (120).

[0052] The second measuring unit (140) can measure the voltage between the third bus bar (13) and the fourth bus bar (14). According to an embodiment, the second measuring unit (140) can be manufactured in the form of a flexible substrate and placed on the third bus bar (13) and / or the fourth bus bar (14), but is not limited thereto.

[0053] The second measuring unit (140) may include a second sensing unit (141) and a second wireless communication module (142). The second sensing unit (141) may sense / measure the voltage between the third bus bar (13) and the fourth bus bar (14) to obtain a second voltage (V2). Here, the second voltage (V2) may be a value that includes the voltages of the third battery cell (113) and the fourth battery cell (114) connected in series. The second wireless communication module (142) may transmit the measured second voltage (V2) to the management unit (120).

[0054] In FIG. 2, the first measuring unit (130) and the second measuring unit (140) are exemplarily illustrated, but are not limited thereto, and a measuring unit (nth measuring unit) is respectively arranged between adjacent bus bars (e.g., the third bus bar (13) and the (-) electrode tab side bus bar of the first battery cell (111)), so as to sense / measure the voltage between the bus bars.

[0055] Hereinafter, an operation of the management unit (120) calculating the voltages of a plurality of battery cells (111, 112, 114, 115) including the third battery cell (113) through mathematical operations will be described. As described above, the first voltage (V1) below may be a value including the voltages of the second battery cell (112) and the third battery cell (113) connected in series, and the second voltage (V2) may be a value including the voltages of the third battery cell (113) and the fourth battery cell (114) connected in series.

[0056] The management unit (120) can divide the first voltage (V1) in half to produce a first intermediate voltage (V_L1) and a second intermediate voltage (V_U1), respectively. The management unit (120) can subtract the second intermediate voltage (V_U1) from the second voltage (V2) to produce a third intermediate voltage (V_U2(1)). In addition, the management unit (120) can divide the second voltage (V2) in half to produce a fourth intermediate voltage (V_U2) and a fifth intermediate voltage (V_L2), respectively.

[0057] The management unit (120) can obtain the sixth intermediate voltage (V_avg) by averaging the third intermediate voltage (V_U2(1)) and the fourth intermediate voltage (V_U2), but is not limited thereto, and the management unit (120) can obtain the sixth intermediate voltage (V_Uavg) by calculating the third intermediate voltage (V_U2(1)) and the fourth intermediate voltage (V_U2) through various mathematical operations. The management unit (120) can calculate the voltage (Vcell3) of the third battery cell (113) by subtracting the sixth intermediate voltage (V_Uavg) from the second voltage (V2).

[0058] That is, the management unit (120) can calculate the voltage (Vcell3) of the third battery cell (113) through mathematical calculation based on the fact that the voltage (Vcell3) of the third battery cell (113) is commonly included in the first voltage (V1) which is the voltage between the first bus bar (11) and the second bus bar (12) and the second voltage (V2) which is the voltage between the third bus bar (13) and the fourth bus bar (14).

[0059] The management unit (120) can calculate the voltage of each of the plurality of battery cells (111, 112, 114, 115) by repeating the above-described operations.

[0060] In addition, according to various embodiments, the management unit (120) can calculate the voltage (Vcell2) of the second battery cell (112) by subtracting the voltage (Vcell3) of the third battery cell (113) from the first voltage (V1), and can also calculate the voltage (Vcell4) of the fourth battery cell (114) by subtracting the voltage (Vcell3) of the third battery cell (113) from the second voltage (V2).

[0061] According to various embodiments, the management unit (120) may include a battery pack BMS.

[0062] In the case of general cell voltage measurement technologies, the cell voltage is measured by configuring a sensing line that is connected from each of the two electrode tabs of each cell to the ICB (Inter Connected Board) or module BMS, so a separate configuration for cell voltage measurement is required and there is a problem in that the wiring line is complicated. However, according to the embodiments disclosed in the present document, the first measurement unit (130) and the second measurement unit (140) directly transmit the sensed / measured first voltage (V1) and second voltage (V2) to the management unit (120) via wireless communication, and the management unit (120) can calculate the voltage of a plurality of battery cells (111, 112, 114, 115) including the third battery cell (113) by mathematically calculating the first voltage (V1) and the second voltage (V2) as described below, so that the battery cell voltage can be efficiently measured and the internal configuration and / or wiring of the battery (100) can be simplified.

[0063] Figures 4 to 6 are flowcharts showing a method of operating a battery according to one embodiment disclosed in this document.

[0064] First, referring to FIG. 4, the operating method of a battery according to an embodiment disclosed in the present document may include an operation (S110) of measuring a first voltage, which is a voltage between a first bus bar connecting a first battery cell and a second battery cell and a second bus bar connecting a third battery cell and a fourth battery cell, an operation (S120) of measuring a second voltage, which is a voltage between a third bus bar connecting a second battery cell and a third battery cell and a fourth bus bar connecting a fourth battery cell and a fifth battery cell, and an operation (S130) of mathematically calculating the first voltage and the second voltage to calculate the voltage of the third battery cell.

[0065] Below, operations S110 to S130 are specifically described with reference to FIGS. 2 and 3.

[0066] In operation S110, the first sensing unit (131) of the first measuring unit (130) can sense / measure the voltage between the first bus bar (11) and the second bus bar (12) to obtain the first voltage (V1). Here, the first voltage (V1) may be a value that includes the voltages of the second battery cell (112) and the third battery cell (113) connected in series. The first wireless communication module (132) of the first measuring unit (130) can transmit the measured first voltage (V1) to the management unit (120).

[0067] In operation S120, the second sensing unit (141) of the second measuring unit (140) can sense / measure the voltage between the third bus bar (13) and the fourth bus bar (14) to obtain the second voltage (V2). Here, the second voltage (V2) may be a value that includes the voltages of the third battery cell (113) and the fourth battery cell (114) connected in series. The second wireless communication module (142) can transmit the measured second voltage (V2) to the management unit (120).

[0068] In operation S130, the management unit (120) can mathematically calculate the first voltage (V1) and the second voltage (V2) to calculate the voltage (Vcell3) of the third battery cell (113). Operation S130 may include operations S131 to S134 illustrated in FIG. 5.

[0069] Referring to FIG. 5, operation S130 may include an operation of dividing a first voltage in half to produce a first intermediate voltage and a second intermediate voltage, respectively (S131), an operation of subtracting a second intermediate voltage from a second voltage to produce a third intermediate voltage, an operation of dividing the second voltage in half to produce a fourth intermediate voltage and a fifth intermediate voltage, respectively (S133), and an operation of using the third intermediate voltage and the fourth intermediate voltage to produce a voltage of a third battery cell, respectively (S134).

[0070] In operation S131, the management unit (120) can divide the first voltage (V1) into two halves to produce a first intermediate voltage (V_L1) and a second intermediate voltage (V_U1), respectively.

[0071] In operation S132, the management unit (120) can calculate a third intermediate voltage (V_U2(1)) by subtracting the second intermediate voltage (V_U1) from the second voltage (V2).

[0072] In operation S133, the management unit (120) can divide the second voltage (V2) into two halves to produce a fourth intermediate voltage (V_U2) and a fifth intermediate voltage (V_L2), respectively.

[0073] In operation S134, the management unit (120) can calculate the voltage (Vcell3) of the third battery cell (113) using the third intermediate voltage (V_U2(1)) and the fourth intermediate voltage (V_U2).

[0074] Referring to FIG. 6, operation S134 may include an operation (S134a) of obtaining a sixth intermediate voltage by averaging the third intermediate voltage and the fourth intermediate voltage, and an operation (S134b) of calculating the voltage of the third battery cell by subtracting the sixth intermediate voltage from the second voltage.

[0075] In operation S134a, the management unit (120) can obtain the sixth intermediate voltage (V) by averaging the third intermediate voltage (V_U2(1)) and the fourth intermediate voltage (V_U2), but is not limited thereto, and the management unit (120) can obtain the sixth intermediate voltage (V_Uavg) by calculating the third intermediate voltage (V_U2(1)) and the fourth intermediate voltage (V_U2) through various mathematical operations.

[0076] In operation S134b, the management unit (120) can calculate the voltage (Vcell3) of the third battery cell (113) by subtracting the sixth intermediate voltage (V_Uavg) from the second voltage (V2).

[0077] That is, the management unit (120) can calculate the voltage (Vcell3) of the third battery cell (113) through mathematical calculation based on the fact that the voltage (Vcell3) of the third battery cell (113) is commonly included in the first voltage (V1) which is the voltage between the first bus bar (11) and the second bus bar (12) and the second voltage (V2) which is the voltage between the third bus bar (13) and the fourth bus bar (14).

[0078] Furthermore, the management unit (120) can calculate the voltage of each of the plurality of battery cells (111, 112, 114, 115) by repeating the above-described operation. In addition, according to various embodiments, the management unit (120) can calculate the voltage (Vcell2) of the second battery cell (112) by differentiating the voltage (Vcell3) of the third battery cell (113) from the first voltage (V1), and can also calculate the voltage (Vcell4) of the fourth battery cell (114) by differentiating the voltage (Vcell3) of the third battery cell (113) from the second voltage (V2).

[0079] FIG. 7 illustrates a computing system executing a method of operating a battery according to another embodiment disclosed in this document.

[0080] Referring to FIG. 7, a computing system (200) according to an embodiment disclosed in this document may include an MCU (210), a memory (220), an input / output I / F (230), and a communication I / F (240).

[0081] The MCU (210) may be a processor that executes various programs (e.g., a battery cell voltage calculation program) stored in the memory (220) and performs the functions of the battery management device (120) described with reference to FIGS. 1 to 3, or a processor that executes the battery operation method described with reference to FIGS. 4 to 6.

[0082] The memory (220) can store various programs related to calculating the SOH of a battery cell and determining whether cell balancing is to be performed, a battery connection failure determination program, a battery data transmission program, a battery diagnosis program, a battery cell voltage calculation program, etc. In addition, the memory (220) can store various data such as voltage, SOC, SOH data, sensing values, and temperature of each battery cell.

[0083] Such memories (220) may be provided in multiple numbers as needed. The memories (220) may be volatile memories or non-volatile memories. As volatile memories (220), RAM, DRAM, SRAM, etc. may be used. As non-volatile memories (220), ROM, PROM, EAROM, EPROM, EEPROM, flash memories, etc. may be used. The examples of the memories (220) listed above are merely examples and are not limited to these examples.

[0084] The input / output I / F (230) can provide an interface that enables data transmission and reception between an input device (not shown) such as a keyboard, mouse, or touch panel, and an output device (not shown) such as a display and the MCU (210).

[0085] The communication I / F (240) is a component capable of transmitting and receiving various data with a server, and may be any device capable of supporting wired or wireless communication. For example, programs for calculating the SOH of battery cells, determining balancing targets, various data, battery data transmission programs, battery diagnostic programs, etc. can be transmitted and received from a separately provided external server via the communication I / F (240).

[0086] In this way, the operating method of the battery management device according to one embodiment disclosed in this document can be recorded in the memory (220) and executed by the MCU (210).

[0087] The above description is merely an example of the technical idea disclosed in this document, and those skilled in the art to which the embodiments disclosed in this document pertain may make various modifications and variations without departing from the essential characteristics of the embodiments disclosed in this document.

[0088] Accordingly, the embodiments disclosed in this document are intended to illustrate, rather than limit, the technical concepts disclosed in this document, and the scope of the technical concepts disclosed in this document is not limited by these embodiments. The scope of protection of the technical concepts disclosed in this document should be interpreted by the claims below, and all technical concepts within the equivalent scope should be interpreted as being included within the scope of the rights of this document.

Claims

1. A first measuring unit that measures a first voltage, which is a voltage between a first bus bar connecting a first battery cell and a second battery cell and a second bus bar connecting a third battery cell and a fourth battery cell, and transmits the first voltage to a management unit; A second measuring unit that measures a second voltage, which is a voltage between a third bus bar connecting the second battery cell and the third battery cell and a fourth bus bar connecting the fourth battery cell and the fifth battery cell, and transmits the second voltage to the management unit; and A battery including a management unit that mathematically calculates the first voltage and the second voltage to calculate the voltage of the third battery cell.

2. In paragraph 1, A battery wherein the above management unit divides the first voltage in half to produce a first intermediate voltage and a second intermediate voltage, respectively.

3. In paragraph 2, The above management unit is a battery that produces a third intermediate voltage by differentiating the second intermediate voltage from the second voltage.

4. In paragraph 3, The above management unit is a battery that divides the second voltage in half to produce a fourth intermediate voltage and a fifth intermediate voltage, respectively.

5. In paragraph 4, The above management unit is a battery that obtains a sixth intermediate voltage by averaging the third intermediate voltage and the fourth intermediate voltage.

6. In paragraph 5, A battery wherein the management unit calculates the voltage of the third battery cell by differentiating the sixth intermediate voltage from the second voltage.

7. In paragraph 6, A battery wherein the management unit calculates the voltage of at least one of the first battery cell, the second battery cell, and the fourth battery cell using the voltage of the third battery cell.

8. In paragraph 1, A battery wherein the first measuring unit and the second measuring unit each include a wireless communication module for communicating with the management unit.

9. An operation of measuring a first voltage, which is a voltage between a first bus bar connecting a first battery cell and a second battery cell and a second bus bar connecting a third battery cell and a fourth battery cell; An operation of measuring a second voltage, which is a voltage between a third bus bar connecting the second battery cell and the third battery cell and a fourth bus bar connecting the fourth battery cell and the fifth battery cell; and A method of operating a battery, comprising an operation of mathematically calculating the first voltage and the second voltage to calculate the voltage of the third battery cell.

10. In paragraph 9, The operation of calculating the voltage of the third battery cell by mathematically calculating the first voltage and the second voltage is an operation of calculating the first intermediate voltage and the second intermediate voltage by dividing the first voltage in half, respectively; An operation of generating a third intermediate voltage by differentiating the second intermediate voltage from the second voltage; An operation of dividing the second voltage into two halves to produce a fourth intermediate voltage and a fifth intermediate voltage, respectively; and A method of operating a battery, comprising an operation of calculating a voltage of the third battery cell using the third intermediate voltage and the fourth intermediate voltage.

11. In Article 10, An operation of calculating the voltage of the third battery cell using the third intermediate voltage and the fourth intermediate voltage is an operation of obtaining a sixth intermediate voltage by averaging the third intermediate voltage and the fourth intermediate voltage; and A method of operating a battery, comprising an operation of calculating a voltage of the third battery cell by differentiating the sixth intermediate voltage from the second voltage.

12. In paragraph 10, A method of operating a battery further comprising an operation of calculating the voltage of at least one of the first battery cell, the second battery cell, and the fourth battery cell using the voltage of the third battery cell.

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