Battery management device and method

Abstract

A battery management device according to an embodiment of the present disclosure includes: a measuring unit, which is connected to a battery and is configured to operate in a measurement mode during a predetermined measurement time in each preset measurement cycle and measure battery information including at least one of a voltage and a temperature of the battery while operating in the measurement mode; and a control unit, which is configured to operate in a communication mode during a preset operation time in each preset communication cycle, receive the battery information from the measuring unit while operating in the communication mode, set a next operation time point at which the measuring unit will operate in the measurement mode based on at least one of the communication cycle and the measurement time, and change the operation time for operating in the communication mode in each subsequent communication cycle based on the measurement time.

Description

Technical Field

[0001] This application claims priority from Korean Patent Application No. 10-2020-0085464 filed in Korea on Jul. 10, 2020, the disclosure of which is incorporated herein by reference.

[0002] The present disclosure relates to a battery management device and method, and more particularly, to a battery management device and method capable of effectively reducing power consumption required for battery information measurement and battery status diagnosis. Background Art

[0003] Recently, the demand for portable electronic products such as notebook computers, cameras, and portable phones has increased dramatically, and electric vehicles, energy storage batteries, robots, satellites, etc. have been developed in earnest. Therefore, high-performance batteries that allow repeated charging and discharging are being actively studied.

[0004] Currently commercially available batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, lithium batteries, etc. Among these batteries, lithium batteries have attracted much attention because they have almost no memory effect compared to nickel batteries and also have extremely low self-discharge rate and high energy density.

[0005] After these batteries are manufactured and assembled, they may undergo a distribution process for delivery to customers. During distribution, batteries naturally discharge, and in particular, if a defective battery is produced during the manufacturing process, the battery may discharge more than normal. Therefore, diagnosing battery defects by measuring battery voltage and temperature is one of the most important processes during battery distribution.

[0006] However, during the battery distribution process, workers have limitations in measuring the voltage and temperature of each battery.

[0007] In addition, since commercial power is not supplied in most cases during battery distribution, the battery voltage and temperature are measured by a battery management system (BMS), etc. In addition, even if the battery condition is diagnosed, the amount of power supplied to the BMS is inevitably limited.

[0008] Therefore, in order to continuously diagnose the status of the battery during the battery distribution process, it is necessary to develop a technology that can significantly reduce power consumption by reducing unnecessary power consumption. Summary of the Invention

[0009] Technical issues

[0010] The present disclosure is designed to solve the problems of the related art, and therefore the present disclosure relates to providing a battery management device and method that can reduce unnecessary power consumption in situations where the provided power is limited, such as during battery distribution, by synchronizing the time point when the measuring unit operates in the measurement mode with the time point when the control unit operates in the communication mode and reducing the operation time of the control unit operating in the communication mode.

[0011] These and other objects and advantages of the present disclosure can be understood from the following detailed description and more fully apparent from the exemplary embodiments of the present disclosure.In addition, it will be easily understood that the objects and advantages of the present disclosure can be achieved by the means shown in the appended claims and their combinations.

[0012] Technical Solution

[0013] A battery management device according to an aspect of the present disclosure may include: a measuring unit connected to a battery and configured to operate in a measurement mode during a predetermined measurement time in each preset measurement cycle and measure battery information including at least one of a voltage and a temperature of the battery while operating in the measurement mode; and a control unit configured to operate in a communication mode during a preset operation time in each preset communication cycle, receive the battery information from the measuring unit while operating in the communication mode, set a next operation time point at which the measuring unit will operate in the measurement mode based on at least one of the communication cycle and the measurement time, and change the operation time for operating in the communication mode in each subsequent communication cycle based on the measurement time.

[0014] The measurement unit may be configured to operate in the measurement mode at the next operation time point to measure the battery information, and operate in the measurement mode in each measurement cycle after measuring the battery information.

[0015] The control unit may be configured to set the next operation time point based on the measurement period so that the measurement unit operates in the measurement mode at an operation start point of the communication mode.

[0016] The operation time may be configured to be preset to correspond to the measurement period.

[0017] The control unit may be configured to change the operation time to correspond to the measurement time after the next operation time point is set.

[0018] When the battery is provided in plural, the measuring unit may be provided in plural to respectively correspond to the plural batteries, each measuring unit being configured to operate in each measurement cycle to measure battery information of a corresponding battery among the plural batteries.

[0019] The control unit may be configured to set a next operation time point of each of the plurality of measurement units based on at least one of the communication cycle and the measurement time.

[0020] The control unit may be configured to calculate, for each of the plurality of measurement units, a time interval between an operation starting point of the communication mode and an operation starting point of the measurement mode, and set a next operation time point of each of the plurality of measurement units based on the calculated time interval, the measurement cycle, and the measurement time.

[0021] The control unit may be configured to set the next operation time point of each of the plurality of measurement units according to the following Formula 1 based on an identification number of each of the plurality of measurement units,

[0022] [Formula 1]

[0023] T NEXT =T S -T GN +{(N-1)×T P}

[0024] Among them, T NEXT is the next operation time point, T S is the measurement period, N is an identification number set for each of the plurality of measurement units, the identification number is a positive number, T GN is the time interval between the operation start point of the communication mode of the control unit and the operation start point of the measurement mode of the measurement unit identified by number N, and T P is the measurement time.

[0025] The control unit may be configured to set the next operation time point and then change the operation time based on the number of the plurality of measurement units and the measurement time.

[0026] The control unit may be configured to change the operation time according to the following formula 2,

[0027] [Formula 2]

[0028] T Q =M×T P

[0029] Among them, T Qis the operation time, M is the number of the plurality of measurement units, and T P is the measurement time.

[0030] The measuring unit may be configured to store the battery information measured in each preset measurement period, and when the control unit operates in the communication mode while the measuring unit operates in the measurement mode, the measuring unit transmits all stored battery information to the control unit.

[0031] The control unit may be configured to set the next operation time point in each preset communication cycle.

[0032] The control unit can be configured to extract the voltage value and temperature value of the battery from the received battery information, obtain a voltage comparison result by comparing the extracted voltage value with a reference voltage value, obtain a temperature comparison result by comparing the extracted temperature value with a reference temperature value, and diagnose the state of the battery based on at least one of the voltage comparison result and the temperature comparison result.

[0033] According to another aspect of the present disclosure, a battery management method may include the following steps: a battery information measuring step, in which the battery information measuring step measures battery information including at least one of the voltage and temperature of the battery while operating in the measurement mode in each preset measurement cycle by a measuring unit operating in a measurement mode during a predetermined measurement time and operating in the measurement mode; a battery information receiving step, in which the battery information receiving step receives the battery information measured in the step of operating in the measurement mode while operating in the communication mode in each preset communication cycle by a control unit operating in a communication mode during a preset operation time and operating in the communication mode; an operation time point setting step, in which the operation time point setting step sets the next operation time point at which the measuring unit will operate in the measurement mode based on at least one of the communication cycle and the measurement time by the control unit; and an operation time changing step, in which the operation time for operating in the communication mode in each subsequent communication cycle is changed by the control unit based on the measurement time.

[0034] Beneficial effects

[0035] According to an aspect of the present disclosure, by synchronizing a point in time when the measurement unit operates in the measurement mode with a point in time when the control unit operates in the communication mode, there is an advantage of significantly reducing power consumption while the control unit operates in the communication mode.

[0036] The effects of the present disclosure are not limited to the above-mentioned effects, and those skilled in the art can clearly understand other effects that are not mentioned through the description of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings illustrate preferred embodiments of the present disclosure and, together with the above disclosure, are used to provide a further understanding of the technical features of the present disclosure. Therefore, the present disclosure is not to be construed as being limited to the accompanying drawings.

[0038] Figure 1 is a diagram schematically illustrating a battery management apparatus according to an embodiment of the present disclosure.

[0039] Figure 2 is a diagram schematically illustrating an exemplary configuration of a battery management apparatus according to an embodiment of the present disclosure.

[0040] Figure 3 is a diagram schematically illustrating an operation of a measuring unit of a battery management apparatus according to an embodiment of the present disclosure.

[0041] Figure 4 is a diagram schematically illustrating operations of a control unit of a battery management apparatus according to an embodiment of the present disclosure.

[0042] Figure 5 is a first comparative example schematically illustrating the operation of the battery management apparatus according to the embodiment of the present disclosure.

[0043] Figure 6 FIG. 1 is a first example schematically illustrating the operation of the battery management apparatus according to an embodiment of the present disclosure.

[0044] Figure 7 is a diagram schematically illustrating another exemplary configuration of a battery management apparatus according to an embodiment of the present disclosure.

[0045] Figure 8 is a second comparative example schematically illustrating the operation of the battery management apparatus according to the embodiment of the present disclosure.

[0046] Figure 9 FIG. 2 is a second example schematically illustrating the operation of the battery management apparatus according to the embodiment of the present disclosure.

[0047] Figure 10 is a diagram schematically illustrating a battery management method according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0048] It should be understood that the terms used in the specification and the appended claims should not be interpreted as limited to the general meaning and dictionary meaning, but should be interpreted based on the meaning and concepts corresponding to the technical aspects of the present disclosure on the basis of the principle that allows the inventor to define terms suitable for the best description.

[0049] Therefore, the descriptions presented herein are merely preferred examples for illustrative purposes only and are not intended to limit the scope of the present disclosure, so it should be understood that other equivalents and modifications may be made without departing from the scope of the present disclosure.

[0050] Additionally, in describing the present disclosure, when a detailed description of related known elements or functions is deemed to obscure the key subject matter of the present disclosure, the detailed description is omitted herein.

[0051] Terms including ordinal numbers such as “first,” “second,” etc. may be used to distinguish one element from another among various elements, but are not intended to limit the elements by the terms.

[0052] Throughout the specification, when a part is referred to as “including” or “comprising” any elements, it means that the part may further include other elements, and does not exclude other elements, unless specifically stated otherwise.

[0053] In addition, the term "control unit" described in the specification refers to a unit that processes at least one function or operation and can be implemented by hardware, software, or a combination of hardware and software.

[0054] In addition, throughout the specification, when a part is referred to as being “connected” to another part, it is not limited to the case where they are “directly connected” but also includes the case where they are “indirectly connected” with another element interposed therebetween.

[0055] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0056] Figure 1 is a diagram schematically illustrating a battery management apparatus 100 according to an embodiment of the present disclosure. Figure 2 is a diagram schematically illustrating an exemplary configuration of a battery management apparatus 100 according to an embodiment of the present disclosure.

[0057] Reference Figure 1 and Figure 2 , the battery management device 100 according to an embodiment of the present disclosure may include a measuring unit 110 and a control unit 120 .

[0058] The measuring unit 110 may be configured to be connected to the battery B.

[0059] Here, battery B refers to an independent battery cell having a negative terminal and a positive terminal and is physically separable. For example, a pouch-type lithium polymer battery cell can be considered battery B. Alternatively, a battery module in which one or more battery cells are connected in series and / or in parallel can be considered battery B.

[0060] In addition, the measuring unit 110 may be configured to: S ) in the predetermined measurement time (T P ) during operation in measurement mode.

[0061] Figure 3 is a diagram schematically illustrating an operation of the measurement unit 110 of the battery management apparatus 100 according to an embodiment of the present disclosure.

[0062] exist Figure 3 In an embodiment, the measuring unit 110 may operate in a measurement mode in an area marked in black, and the measuring unit 110 may operate in a standby mode in an area not marked in black.

[0063] Specifically, the measuring unit 110 may perform a measurement in each preset measurement period (T S ) in the measurement mode, and when the measurement unit 110 is not operating in the measurement mode, it operates in the standby mode. In addition, the measurement unit 110 may operate in the predetermined measurement time (T P ) during operation in measurement mode.

[0064] In addition, the measurement unit 110 may be configured to measure battery information including at least one of the voltage and temperature of the battery B while operating in the measurement mode.

[0065] For example, the measurement unit 110 may be connected to the positive terminal and the negative terminal of the battery B. In addition, the measurement unit 110 may measure the positive electrode voltage and the negative electrode voltage of the battery B and calculate the difference between the measured positive electrode voltage and the measured negative electrode voltage to calculate the voltage of the battery B. In addition, the measurement unit 110 may be connected to the battery B to measure the temperature of the battery B.

[0066] For example, during distribution, battery B may be stored in a container or similar location for a certain period of time. If measurement unit 110 cannot be connected to commercial power, the power that measurement unit 110 can receive from a power source provided in the container or similar location, or from an auxiliary source provided in measurement unit 110, may be limited. Therefore, to effectively use limited power, measurement unit 110 does not measure the voltage and temperature of battery B in standby mode, but may measure the voltage and / or temperature of battery B in measurement mode.

[0067] The control unit 120 may be configured to C ) during the preset operation time (T Q ) operates in communication mode.

[0068] Figure 4is a diagram schematically illustrating the operation of the control unit 120 of the battery management apparatus 100 according to an embodiment of the present disclosure.

[0069] exist Figure 4 In an embodiment, the control unit 120 may operate in the communication mode in the area marked in black, and the control unit 120 may operate in the standby mode in the area not marked in black.

[0070] Specifically, the control unit 120 performs a communication operation in each preset communication cycle (T C ) in the communication mode, and when the control unit 120 is not operating in the communication mode, it operates in the standby mode. In addition, the control unit 120 may be in a predetermined operation time (T Q ) during operation in communication mode.

[0071] As in the previous embodiment, during the distribution process of battery B, the power available to the measurement unit 110 and the control unit 120 may be limited. Therefore, similar to the measurement unit 110, in order to effectively use the limited power, the control unit 120 may communicate with the battery B in each preset communication cycle (T C ) operates in communication mode and operates in standby mode except for the period.

[0072] Additionally, the control unit 120 may be configured to receive battery information from the measurement unit 110 while operating in the communication mode.

[0073] Preferably, the measuring unit 110 may be operated in the measuring mode while the control unit 120 is operating in the communication mode. That is, when the control unit 120 is operating in the communication mode and the measuring unit 110 is operating in the measurement mode, the control unit 120 and the measuring unit 110 may be connected to communicate with each other. For this purpose, the operation time (T Q ) may be preset to correspond to the measurement period (T S ).

[0074] More preferably, the operation time (T Q ) can be combined with the measurement period (T S In this case, when the control unit 120 operates in the communication mode, the measuring unit 110 has no choice but to operate in the measurement mode, so the control unit 120 can receive the battery information from the measuring unit 110.

[0075] The measurement time (T P) can be significantly longer than the measurement period (T S That is, the measuring unit 110 can operate in the standby mode for most of the time in one cycle and only operate in the measuring time (T P ) period in the measurement mode to measure the battery information. In this case, in the case where commercial power is not connected to the measurement unit 110, in order to enable the measurement unit 110 to efficiently use limited power to measure the battery information, it is preferable that the measurement period (T) of the operation in the measurement mode is S ) is set to be greater than the measurement time (T P ) is relatively long and the measurement time (T P ) is set to be larger than the measurement period (T S ) is relatively short. For example, the measurement period (T S ) may be 1 [hour], and the measurement time (T P ) can be 100 [milliseconds].

[0076] In addition, the operation time (T Q ) can be significantly longer than the communication cycle (T C That is, the control unit 120 can operate in the standby mode for most of the time in one cycle and only in the operating time (T Q ) to receive battery information from the measuring unit 110. Similar to the measuring unit 110, in order for the control unit 120 to efficiently communicate with the measuring unit 110 using limited power in a situation where commercial power is not connected to the control unit 120, it is preferred that the communication period (T C ) is set to be longer than the operating time (T Q ) is relatively long and the operation time (T Q ) is set to be longer than the communication period (T C ) is relatively short. For example, the communication cycle (T C ) may be 6 [hours], and the operation time (T Q ) can be 1[hour].

[0077] Here, since the control unit 120 must operate in the operation mode for an operation time (T Q ) performs at least one communication with the measurement unit 110 during the operation time (T Q ) can be set to be equal to or greater than the measurement period (T SPreferably, the operation time (T Q ) and the measurement period (T S ) can be set to be the same. For example, the operation time (T Q ) and the measurement period (T S ) may be 1 [hour]. In addition, when the measuring unit 110 operates in the measuring mode, the control unit 120 may P , 100 [milliseconds]) during which the battery information is received from the measurement unit 110.

[0078] In addition, the control unit 120 may be configured to C ) and measurement time (T P ) to set at least one of the following operation time points at which the measurement unit 110 will operate in the measurement mode.

[0079] For example, the control unit 120 may be configured to determine the number of S ) to set the next operation time point so that the measuring unit 110 operates in the measurement mode at the operation start point of the communication mode. That is, after the control unit 120 receives the battery information from the measuring unit 110, the next operation time point of the measuring unit 110 may be set so that the measuring unit 110 operates in the next communication cycle (T C ) operates in the measurement mode at the point in time when the control unit 120 starts to operate in the communication mode.

[0080] That is, since the next operation time point of the measuring unit 110 is set by the control unit 120, the measuring unit 110 can operate in the next communication cycle (T C ) operates in the measurement mode at the same time point as the time point when the control unit 120 operates in the communication mode.

[0081] In addition, the control unit 120 may be configured to measure the time (T P ) changes in each subsequent communication cycle (T C ) in the communication mode (T Q ).

[0082] For example, assuming that the operation time (T Q ) is initially set to the measurement period (T S ) is the same as 1 [hour], and the measurement time (T P) is 100 [milliseconds]. In this case, if the measuring unit 110 does not operate in the measuring mode at the operation start point when the control unit 120 operates in the communication mode, the control unit 120 must C ) in the communication mode for a maximum of 1 [hour] in order to receive the battery information from the measurement unit 110. In addition, if the next operation time point of the measurement unit 110 is not changed, in order to receive the battery information within 100 [milliseconds] when the measurement unit 110 operates in the measurement mode, the control unit 120 must operate in the communication mode for a maximum of 1 [hour] in each communication cycle (T C ) operates in communication mode for 1 [hour].

[0083] Therefore, the control unit 120 can set the next operation time point of the measuring unit 110 so that the measuring unit 110 operates in the measurement mode at the operation start point of the operation in the communication mode. C ), the control unit 120 may operate in the communication mode and the measuring unit 110 may operate in the measurement mode, so even if the control unit 120 is only in the measurement time (T P , 100 [ms]), the control unit 120 operates in the communication mode, and the battery information can also be received from the measuring unit 110. That is, since the next operation time point of the measuring unit 110 is set by the control unit 120, the operation time (T Q ) can be reduced from 1 [hour] to 100 [milliseconds].

[0084] The battery managing apparatus 100 according to an embodiment of the present disclosure has an advantage of significantly saving power consumed when the control unit 120 operates in the communication mode by synchronizing a point in time when the measurement unit 110 operates in the measurement mode with a point in time when the control unit 120 operates in the communication mode.

[0085] In addition, the control unit 120 provided to the battery management device 100 according to the embodiment of the present disclosure may selectively include a processor, an application-specific integrated circuit (ASIC), other chipsets, logic circuits, registers, communication modems, data processing devices, etc. known in the art to execute the various control logics executed in the present disclosure. In addition, when the control logic is implemented in software, the control unit 120 can be implemented as a collection of program modules. In this case, the program modules can be stored in a memory and executed by the control unit 120. The memory can be located inside or outside the control unit 120 and can be connected to the control unit 120 through various well-known devices.

[0086] In the following, reference will be made to Figure 5Comparative Examples and Figure 6 The operation of the battery management device 100 is described in more detail with reference to an example.

[0087] Figure 5 1 is a first comparative example schematically illustrating the operation of the battery management device 100 according to an embodiment of the present disclosure. Specifically, Figure 5 is an example of the next operation time point of the measuring unit 110 and the operation time (T Q ) is a diagram of the unchanged comparative example.

[0088] Figure 6 1 is a first example schematically illustrating the operation of the battery management device 100 according to an embodiment of the present disclosure. Specifically, Figure 6 is a time point showing the next operation of the measuring unit 110 and the operation time of the control unit 120 according to the present disclosure (T Q )A diagram of an example of a change.

[0089] exist Figure 5 In the comparative example of FIG, the control unit 120 can operate in the communication mode at time point C1 and time point C3. Figure 4 and Figure 5 , the interval between the time points C1 and C2 and the interval between the time points C3 and C4 may be the operation time (T Q In addition, the interval between the time points C1 and C3 may be the communication cycle (T C ). In addition, the measurement unit 110 may operate in the measurement mode at each of the time points S0 to S7. Here, the interval between the time points S0 and S1, the interval between the time points S1 and S2, the interval between the time points S2 and S3, the interval between the time points S3 and S4, the interval between the time points S4 and S5, the interval between the time points S5 and S6, and the interval between the time points S6 and S7 may be the measurement period (T S Here, the operation time (T Q ) can be combined with the measurement period (T S )same.

[0090] Specifically, the control unit 120 may be configured to perform a measurement operation in the measurement cycle (T S ) corresponding to the time period in the communication mode to receive battery information from the measuring unit 110. That is, since the communication cycle (T C ) and the measurement period (T S) are not adjusted to correspond to each other, and thus the control unit 120 must operate in the communication mode during a longer time than required to actually receive the battery information in order to receive the battery information from the measurement unit 110.

[0091] For example, in Figure 5 In the comparative example of FIG, the time points C1 and C3 at which the control unit 120 operates in the communication mode are different from the time points S1 and S7 at which the measuring unit 110 operates in the measurement mode, respectively. Therefore, the control unit 120 has a problem in that it must operate in the communication mode for the same measurement period (T S ) corresponding time.

[0092] In addition, Figure 6 In the example shown in FIG, the control unit 120 may receive battery information from the measurement unit 110 and set the next operation time point of the measurement unit 110 while operating in the communication mode at time points C1 and C2. Specifically, the control unit 120 may set the operation end time point of the communication mode as the next operation time point of the measurement unit 110. That is, the operation end time point C2 of the communication mode of the control unit 120 and the next operation time point S2' of the measurement unit 110 may be the same.

[0093] Specifically, Figure 6 The hatched area in the example is Figure 5 The time point at which the measuring unit 110 operates in the measuring mode is consistent with the comparative example of FIG. Figure 5 and Figure 6 , Figure 5 The measuring unit 110 in the comparative example operates in the measuring mode at time points S2, S3, S4, S5, S6, and S7, while Figure 6 The measurement unit 110 in the example may operate in the measurement mode at time points S2 ′, S3 ′, S4 ′, S5 ′, S6 ′, and S7 ′.

[0094] In addition, Figure 6 In the example of FIG. 1 , the next communication cycle (T C The communication mode operation starting point (C3) of the control unit 120 and the measurement mode operation starting point (S7′) of the measurement unit 110 may be the same as each other. This is because the control unit 120 takes into account the communication cycle (T C ) and measurement time (T P ) has changed the next operation time point at which the measurement unit 110 will operate in the measurement mode within S2 to S2'.

[0095] Specifically, the measuring unit 110 may be configured to operate in the measuring mode at the next operating time point to measure the battery information, and after measuring the battery information, perform the measurement in each measuring cycle (T S ) to operate in measurement mode.

[0096] For example, refer to Figure 3 and Figure 6 , the measurement period of the measurement unit 110 itself (T S ) is maintained in the same manner as before, but at the next operation time point set by the control unit 120, the measurement unit 110 operates in the measurement mode. Therefore, at the same time points (C3 and S7'), the control unit 120 can operate in the communication mode, and the measurement unit 110 can operate in the measurement mode.

[0097] In addition, the control unit 120 may be configured to set the operation time (T Q ) is changed to the measurement time (T P ) corresponding to.

[0098] Specifically, after setting the next operation time point of the measurement unit 110, the control unit 120 may change the operation time (T Q ), thereby becoming the same as the measurement time (T P )same.

[0099] For example, the control unit 120 can know the time point when the measuring unit 110 starts to operate in the measuring mode and the time point when the measuring unit 110 starts to operate in the measuring mode based on the measuring period (T S ) Measurement time (T P ), so from the subsequent communication cycle (T C ) and the operation time (T Q ) may be set to be equal to the measurement time (T P That is, since the measuring unit 110 can also measure the operation time (T Q ) during the measurement mode, so even if the operation time (T Q ) becomes the same as the measurement time (T P ), the control unit 120 may also receive battery information from the measuring unit 110.

[0100] Therefore, according to the embodiment of the present disclosure, there is an advantage in that the operation time (T Q ), reducing unnecessary power consumption in situations where the power provided is limited (such as during the distribution process of battery B).

[0101] Figure 7 is a diagram schematically illustrating another exemplary configuration of the battery management apparatus 100 according to an embodiment of the present disclosure.

[0102] Specifically, Figure 7 is a diagram schematically showing an example in which a plurality of measurement units 110 are provided in the battery managing apparatus 100 so as to correspond to a plurality of batteries B, respectively.

[0103] When a plurality of batteries B are provided, the measurement unit 110 may be provided in plurality to correspond to the plurality of batteries B, respectively.

[0104] For example, in Figure 7 In the example of FIG, it is assumed that a first battery B1, a second battery B2, and a third battery B3 are provided. The battery management device 100 may include a first measurement unit 110a corresponding to the first battery B1, a second measurement unit 110b corresponding to the second battery B2, and a third measurement unit 110c corresponding to the third battery B3.

[0105] In addition, the measuring unit 110 may be configured to measure the S ) is operated to measure the battery information of the corresponding battery B among the multiple batteries B.

[0106] Specifically, the plurality of measuring units 110 may perform a measurement operation in each set measurement period (T S ) operates in the measurement mode to measure the battery information corresponding to battery B.

[0107] Preferably, Figure 7 In the example of FIG. 1 , the measurement period (T S ) and measurement time (T P However, the time points at which the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c respectively operate in the measurement mode may be different from or the same as each other.

[0108] For example, when the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c operate in the measurement mode at the same time, communication interference may occur while the control unit 120 receives battery information from the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c. Therefore, it is more preferred that the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c operate in the measurement mode at different time points.

[0109] The control unit 120 may be configured to C ) and measurement time (T P ) sets a next operation time point for each of the plurality of measurement units 110.

[0110] Specifically, the control unit 120 may be based on the communication cycle (T C ) and the measurement time (T P ), setting the next operation time point of each measurement unit in the plurality of measurement units 110.

[0111] Figure 8 1 is a second comparative example schematically illustrating the operation of the battery management device 100 according to an embodiment of the present disclosure. Specifically, Figure 8 is a time point showing the next operation of the plurality of measuring units 110 and the operation time of the control unit 120 (T Q ) is a diagram of the unchanged comparative example.

[0112] Figure 9 Schematically illustrates a second example of the operation of the battery management device 100 according to an embodiment of the present disclosure. Specifically, Figure 9 is a time point showing the next operation of the measuring unit 110 and the operation time of the control unit 120 according to the present disclosure (T Q )A diagram of an example of a change.

[0113] exist Figure 8 In the comparative example of FIG, the control unit 120 may operate in the communication mode at the time point C1. Specifically, the control unit 120 may operate in the communication mode at the time point C1. Q ) during the communication mode. In addition, the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c may operate in the communication mode during the measurement time (T P), respectively, during the period from time C1 to time C2, the control unit 120 operates in the measurement mode at time points S1, S2, and S3. That is, the control unit 120 may operate in the communication mode from time point C1 to time point C2 to receive battery information from each of the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c.

[0114] Afterwards, in Figure 8 In the comparative example of FIG, the control unit 120 may operate in the communication mode at time point C3. That is, the interval between time point C1 and time point C3 may be the same as the communication cycle (T C ) are the same. In this case, since the control unit 120 does not set the next operation time point of each of the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c and the operation time (T Q ) does not change, so there is a problem that the control unit 120 must P ) operates in the communication mode so as to receive battery information from each of the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c.

[0115] exist Figure 9 In the example, something like Figure 8 In the comparative example, the control unit 120 may operate in the communication mode from the time point C1 to the time point C2 to receive the battery information from each of the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c.

[0116] In addition, with Figure 8 The comparison examples are different. Figure 9 In the example of , the control unit 120 may set a next operation time point for each of the first measurement unit 110a, the second measurement unit 110b, and the third measurement unit 110c. That is, the next operation time point at which the first measurement unit 110a operates in the measurement mode may be set to time point C2, and the next operation time point at which the second measurement unit 110b operates in the measurement mode may be set to time point C2+T. P , and the next operation time point at which the third measurement unit 110c operates in the measurement mode may be set to the time point C2+2T P .

[0117] Thereafter, the first measuring unit 110a may operate in the measurement mode at the time point C2, and then may measure the value of the first measuring unit 110a in each measurement period (T S ) in the measurement mode. In addition, the second measurement unit 110b can operate at the time point C2+T POperate in measurement mode, then based on the time point C2+T P In each measurement cycle (T S ) in the measurement mode. In addition, the third measurement unit 110c can operate at the time point C2+2T P Operate in measurement mode, then based on the time point C2+2T P In each measurement cycle (T S ) to operate in measurement mode.

[0118] Here, the control unit 120 may be configured to set a next operation time point for each of the plurality of measurement units 110 according to the following Equation 1 based on the identification number of each of the plurality of measurement units 110 .

[0119] [Formula 1]

[0120] T NEXT =T S -T GN +{(N-1)×T P}

[0121] Here, T NEXT is the next operation time point, T S is a measurement period (TS), N is an identification number set for each of the plurality of measurement units 110, which is a positive number, and T GN is the time interval between the operation start point of the communication mode of the control unit 120 and the operation start point of the measurement mode of the measurement unit 110 whose identification number is N, and T P is the measurement time (T P ).

[0122] In the following, Figure 9 In the example of FIG. 1 , it is assumed that the identification number of the first measurement unit 110 a is 1 , the identification number of the second measurement unit 110 b is 2 , and the identification number of the third measurement unit 110 c is 3 .

[0123] Specifically, the control unit 120 may be configured to calculate a time interval between an operation start point of the communication mode and an operation start point of the measurement mode of each of the plurality of measurement units 110, and based on the calculated time interval, the measurement period (T S ) and measurement time (T P ) to set the next operation time point of each of the plurality of measurement units 10.

[0124] exist Figure 9 In the example of FIG, the operation starting point of the communication mode of the control unit 120 is time point C1. In addition, the operation starting point of the measurement mode of the first measurement unit 110a is S1. Referring to Formula 1, the T of the first measurement unit 110a calculated by the control unit 120 isGN is "S1-C1". That is, according to the formula "T S -(S1-C1)" to calculate the next operation time point (T NEXT Here, the measurement period (T S ) is “C2-C1” because it is the same as the operation time (T Q ) is the same. That is, the next operation time point (T NEXT ) is "C2-S1" calculated according to the formula "(C2-C1)-(S1-C1)". Therefore, the first measurement unit 110a can operate in the measurement mode after the time point "C2-S1" from the time point S1. That is, the first measurement unit 110a can operate in the measurement mode at the time point C2 according to the formula "S1+(C2-S1)".

[0125] Similarly, in Figure 9 In the example of , the operation starting point of the measurement mode of the second measurement unit 110b is S2. Referring to Formula 1, the T of the second measurement unit 110b calculated by the control unit 120 is GN is "S2-C1". That is, according to the formula "T S -(S2-C1)+T P ” to calculate the next operation time point (T NEXT Here, the measurement period (T S ) is “C2-C1” because it is the same as the operation time (T Q ) is the same. That is, the next operation time point (T NEXT ) is based on the formula “(C2-C1)-(S2-C1)+T P ” calculated “C2-S2+T P Therefore, the second measurement unit 110b can measure the time at the time point "C2-S2+T P " and then operates in the measurement mode. That is, the first measurement unit 110a can be measured according to the formula "S2+(C2-S2)+T P At time point C2+T P Operates in measurement mode.

[0126] Similarly, in Figure 9 In the example of , the operation starting point of the measurement mode of the third measurement unit 110c is S3. Referring to Formula 1, the T of the third measurement unit 110c calculated by the control unit 120 isGN is "S3-C1". That is, according to the formula "T S -(S3-C1)+2T P ” is used to calculate the next operation time point (T NEXT Here, the measurement period (T S ) is “C2-C1” because it is the same as the operation time (T Q That is, the next operation time point (T NEXT ) is based on the formula “(C2-C1)-(S3-C1)+2T P ” Calculated “C2-S3+2T P Therefore, the third measurement unit 110c can measure the time at the time point "C2-S3+2T" from the time point S3. P " and then operates in the measurement mode. That is, the third measurement unit 110c can be measured according to the formula "S3+(C2-S3)+2T P At time point C2+2T P Operates in measurement mode.

[0127] In addition, the control unit 120 may be configured to set the next operation time point based on the number of the plurality of measurement units 110 and the measurement time (T P ) to change the operation time (T Q ).

[0128] Specifically, the control unit 120 may be configured to change the operation time (T Q ).

[0129] [Formula 2]

[0130] T Q =M×T P

[0131] Here, T Q is the operation time (T Q ), M is the number of the plurality of measurement units 110, and T P is the measurement time (T P ).

[0132] exist Figure 9 In the example of FIG. 1 , the number of the plurality of measurement units 110 is 3. Therefore, referring to Formula 2, the control unit 120 can calculate the value of the plurality of measurement units 110 according to the formula “3×T P "From the next communication cycle (T C ) will start to operate in communication mode. Q ) is changed to 3TP That is, in the initial communication period (T C ), the operation time (T Q ) with the measurement period (T S ) is set to "C2-C1" in the same way, but from the next communication cycle (T C ), the operation time (T Q ) can be significantly reduced to "3T P ”.

[0133] Therefore, according to the embodiment of the present disclosure, the power consumption when the control unit 120 operates in the communication mode can be significantly saved. Figure 8 Comparative Examples and Figure 9 For example, since the measurement period (T S ) and the communication cycle (T C ) is unchanged, so there is an advantage in that the battery information can be measured equally while significantly reducing the power consumption of the control unit 120.

[0134] The measuring unit 110 may be configured to store the value of the measurement result in each preset measurement period (T S ) measured battery information.

[0135] Additionally, if the control unit 120 operates in the communication mode while the measurement unit 110 operates in the measurement mode, the measurement unit 110 may be configured to transmit all stored battery information to the control unit 120 .

[0136] Generally, since the measuring unit 110 is a sensing module, the storage space capable of storing the measured battery information may be smaller than the storage space of the control unit 120. Therefore, the measuring unit 110 may store the measured battery information in each measurement cycle (T S ) stores the measured battery information, and when the control unit 120 operates in the communication mode, transmits all the stored battery information to the control unit 120. Thereafter, the measuring unit 110 may secure a storage space for storing new battery information by deleting the stored battery information.

[0137] Alternatively, with Figure 9 Different from the example of , it is assumed that the communication cycle (T C) is increased than before in order to reduce the power consumption of the control unit 120 when operating in the communication mode. In this case, since the number of times the control unit 120 operates in the communication mode is reduced, the power consumption can be reduced. However, as the number of times the control unit 120 operates in the communication mode is reduced, the battery information to be stored by the measuring unit 110 will increase. That is, the measuring unit 110 may require a larger storage space. Therefore, in this case, there is a problem that the price of the measuring unit 110 included in the battery management device 100 will increase. In addition, compared with Figure 9 Different from the example, assuming that hundreds of batteries B are distributed, the battery management device 100 requires hundreds of measurement units 110 to respectively correspond to the batteries B. In this case, there is a problem in that the price of the battery management device 100 (specifically, the total price of hundreds of measurement units 110) will increase significantly.

[0138] In contrast, the battery management device 100 according to the embodiment of the present disclosure can synchronize the time point at which each of the plurality of measurement units 110 operates in the measurement mode with the time point at which the control unit 120 operates in the communication mode, and the control unit 120 can appropriately change the operation time (T Q ). Therefore, according to the embodiment of the present disclosure, there are advantages in that limited power can be used efficiently and the battery management apparatus 100 can be provided at a reasonable price.

[0139] The control unit 120 may be configured to: C ) sets the next operation time point of the measurement unit 110.

[0140] In an ideal state, when the control unit 120 sets the next operation time point of the measuring unit 110, the measuring unit 110 can set the next operation time point in each preset measurement period (T S However, in actual situations, due to the time when the operation mode of the measuring unit 110 is changed from the standby mode to the measuring mode, the time when the operation mode of the control unit 120 is changed from the standby mode to the communication mode, etc., the measurement period (T S ) or the communication cycle (T C ) may cause an error. Therefore, the control unit 120 may be configured to C ) to set the next operation time point of the measuring unit 110 in order to prevent such an error from occurring in advance.

[0141] The control unit 120 may be configured to extract a voltage value and a temperature value of the battery B from the received battery information.

[0142] In addition, the control unit 120 may be configured to obtain a voltage comparison result by comparing the extracted voltage value with a reference voltage value, and to obtain a temperature comparison result by comparing the extracted temperature value with a reference temperature value.

[0143] Here, the reference voltage value is a voltage value used as a standard for diagnosing the state of battery B as an abnormal state, and may be a preset value. Furthermore, the reference temperature value is a temperature value used as a standard for diagnosing the state of battery B as an abnormal state, and may be a preset value. Furthermore, the reference voltage value and the reference temperature value may be stored in a memory of the control unit 120.

[0144] Specifically, the control unit 120 can obtain a voltage comparison result by comparing the extracted voltage value with the reference voltage value. In addition, the control unit 120 can obtain a temperature comparison result by comparing the extracted temperature value with the reference temperature value.

[0145] In addition, the control unit 120 may be configured to diagnose the state of the battery B based on at least one of the voltage comparison result and the temperature comparison result.

[0146] Specifically, when the extracted voltage value is equal to or less than a reference voltage value or when the extracted temperature value is equal to or less than a reference temperature value, the control unit 120 may diagnose the state of the corresponding battery B as an abnormal state.

[0147] In addition, refer to Figure 1 and Figure 2 , the battery management device 100 according to an embodiment of the present disclosure may include a communication unit 130 .

[0148] The communication unit 130 may be configured to output the battery information received by the control unit 120 from the measurement unit 110 to the outside.

[0149] Specifically, the communication unit 130 may be configured to communicate with an external server and / or diagnostic device. Furthermore, the communication unit 130 may transmit the battery information received by the control unit 120 to the external server and / or diagnostic device. In this case, the external server and / or diagnostic device may receive the battery information from the communication unit 130 and diagnose the battery status based on the received battery information, the reference voltage value, and the reference temperature value.

[0150] For example, the external server may be a cloud server, and the diagnostic device may be a battery management system (BMS).

[0151] That is, according to an embodiment of the present disclosure, since the battery information obtained by the battery management device is stored in an external server and / or an external device, the battery status history during the distribution process can be efficiently stored. In addition, since the battery status can be diagnosed by the external server and / or external device, the battery status history and the battery status diagnosis results can be efficiently stored and managed.

[0152] Figure 10 is a diagram schematically illustrating a battery management method according to another embodiment of the present disclosure.

[0153] Each step of the battery management method according to another embodiment of the present disclosure may be performed by the battery management apparatus 100 according to an embodiment of the present disclosure.

[0154] Hereinafter, for the convenience of description, contents that are repeated with those previously described will be briefly described or omitted.

[0155] Reference Figure 10 The battery management method may include a battery information measuring step (S100), a battery information receiving step (S200), an operation time point setting step (S300), and an operation time changing step (S400).

[0156] The battery information measurement step (S100) is performed in each preset measurement period (T S ) in the predetermined measurement time (T P ) and measuring battery information including at least one of the voltage and temperature of the corresponding battery B while operating in the measurement mode, and may be performed by the measuring unit 110.

[0157] For example, in Figure 3 In the embodiment of the present invention, the measuring unit 110 may perform the following operations in each measuring cycle (T S ) at the measurement time (T P ) during the period of operation in the measurement mode. In addition, the measurement unit 110 may measure battery information including at least one of the voltage and temperature of the connected battery B while operating in the measurement mode.

[0158] The battery information receiving step (S200) is performed in each preset communication cycle (T C ) in the preset operation time (T Q ) and receiving the battery information measured in the step of operating in the measurement mode while operating in the communication mode, and can be performed by the control unit 120.

[0159] For example, in Figure 4 In the embodiment of the present invention, the control unit 120 may perform the following operations in each communication cycle (T C) during the operation time (T Q ) operates in the communication mode during the period. In addition, while the control unit 120 operates in the communication mode, the control unit 120 may receive battery information from the measurement unit 110 operating in the measurement mode.

[0160] The operation time point setting step (S300) is based on the communication cycle (T C ) and measurement time (T P ) to set at least one of the following steps to set the next operation time point at which the measurement unit 110 will operate in the measurement mode, and can be executed by the control unit 120.

[0161] Specifically, after receiving the battery information from the measurement unit 110 , the control unit 120 may set a next operation time point at which the measurement unit 110 should operate in the measurement mode by using Equation 1 above.

[0162] For example, in Figure 6 In the example of , the control unit 120 may set the next operation time point of the measuring unit 110 to be the same time point S2 ′ as the time point C2 .

[0163] As another example, in Figure 9 In the example of FIG, the control unit 120 may set the next operation time point of the first measurement unit 110a to the time point C2, and set the next operation time point of the second measurement unit 110b to the time point C2+T P and sets the next operation time point of the third measurement unit 110c to the time point C2+2T P .

[0164] The operation time changing step (S400) is based on the measurement time (T P ) changes in each subsequent communication cycle (T C ) in the communication mode (T Q ), and can be executed by the control unit 120.

[0165] Specifically, the control unit 120 may set C ) in the communication mode (T Q ) is set to the measurement time (T P )same.

[0166] For example, in Figure 6 In the example of Q ) is set to the measurement time (T P )same.

[0167] As another example, in Figure 9 In the example of Q ) is set to 3T P , the 3T P is the measurement time (T P ) and.

[0168] The embodiments of the present disclosure described above may be implemented not only by devices and methods but also by programs that implement functions corresponding to the configurations of the embodiments of the present disclosure or a recording medium having the program recorded thereon. Based on the above description of the embodiments, those skilled in the art can easily implement the program or recording medium.

[0169] The present disclosure has been described in detail. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the present disclosure, are given by way of illustration only, since various changes and modifications within the scope of the present disclosure will be apparent to those skilled in the art from this detailed description.

[0170] In addition, those skilled in the art may make many substitutions, modifications and changes to the disclosure described above without departing from the technical aspects of the disclosure, and the disclosure is not limited to the above-mentioned embodiments and drawings, and the various embodiments may be selectively combined in part or in whole to allow various modifications.

[0171] (Reference symbol)

[0172] 100: Battery management equipment

[0173] 110: Measurement unit

[0174] 110a: First measurement unit

[0175] 110b: Second unit of measurement

[0176] 110c: Third measurement unit

[0177] 120: Control unit

[0178] 130: Communication unit

[0179] B: Battery

[0180] B1: First Battery

[0181] B2: Second battery

[0182] B3: Third battery

Claims

1. A battery management device, comprising: a measuring unit connected to a battery and configured to operate in a measurement mode during a predetermined measurement time in each preset measurement cycle and measure battery information including at least one of a voltage and a temperature of the battery while operating in the measurement mode; as well as a control unit configured to operate in a communication mode during a preset operation time in each preset communication cycle, the control unit receiving the battery information from the measurement unit while operating in the communication mode, setting a next operation time point at which the measurement unit will operate in the measurement mode based on at least one of the communication cycle and the measurement time, and changing the operation time for operating in the communication mode in each subsequent communication cycle based on the measurement time, The time point at which the measuring unit operates in the measuring mode is synchronized with the time point at which the control unit operates in the communication mode.

2. The battery management device according to claim 1, in, The measurement unit is configured to operate in the measurement mode at the next operation time point to measure the battery information, and to operate in the measurement mode in each measurement cycle after measuring the battery information.

3. The battery management device according to claim 2, in, The control unit is configured to set the next operation time point based on the measurement period so that the measurement unit operates in the measurement mode at an operation start point of the communication mode.

4. The battery management device according to claim 1, in, The operation time is configured to be preset to correspond to the measurement period, and The control unit is configured to change the operation time to correspond to the measurement time after setting the next operation time point.

5. The battery management device according to claim 1, in, When the battery is provided in plural, the measuring unit is provided in plural to correspond to the plural batteries respectively, each measuring unit is configured to operate in each measurement cycle to measure battery information of a corresponding battery among the plural batteries, and The control unit is configured to set a next operation time point of each of the plurality of measurement units based on at least one of the communication cycle and the measurement time.

6. The battery management device according to claim 5, in, The control unit is configured to calculate, for each of the multiple measuring units, a time interval between an operation starting point of the communication mode and an operation starting point of the measurement mode, and set the next operation time point of each of the multiple measuring units based on the calculated time interval, the measurement cycle, and the measurement time.

7. The battery management device according to claim 6, in, The control unit is configured to set the next operation time point of each of the plurality of measurement units according to the following Formula 1 based on an identification number of each of the plurality of measurement units, [Formula 1] T NEXT =T S -T GN +{(N-1)×T P } Among them, T NEXT is the next operation time point, T S is the measurement period, N is an identification number set for each of the plurality of measurement units, the identification number is a positive number, T GN is the time interval between the operation start point of the communication mode of the control unit and the operation start point of the measurement mode of the measurement unit with identification number N, and T P is the measurement time.

8. The battery management device according to claim 5, in, The control unit is configured to set the next operation time point and then change the operation time based on the number of the plurality of measurement units and the measurement time.

9. The battery management device according to claim 8, in, The control unit is configured to change the operation time according to the following formula 2, [Formula 2] T Q =M×T P Among them, T Q is the operation time, M is the number of the plurality of measurement units, and T P is the measurement time.

10. The battery management device according to claim 1, in, The measuring unit is configured to store the battery information measured in each preset measurement period, and when the control unit operates in the communication mode while the measuring unit is operating in the measurement mode, the measuring unit transmits all the stored battery information to the control unit.

11. The battery management device according to claim 1, in, The control unit is configured to set the next operation time point in each preset communication cycle.

12. The battery management device according to claim 1, in, The control unit is configured to extract a voltage value and a temperature value of the battery from the received battery information, obtain a voltage comparison result by comparing the extracted voltage value with a reference voltage value, obtain a temperature comparison result by comparing the extracted temperature value with a reference temperature value, and diagnose a state of the battery based on at least one of the voltage comparison result and the temperature comparison result.

13. The battery management device according to claim 1, wherein: The measurement time is shorter than the measurement cycle, and the operation time is shorter than the communication cycle.

14. A battery management method, comprising the following steps: a battery information measuring step of measuring battery information including at least one of a voltage and a temperature of the battery by a measuring unit operating in a measurement mode during a predetermined measurement time in each preset measurement cycle and while operating in the measurement mode; a battery information receiving step of receiving, by a control unit, the battery information measured in the step of operating in the measurement mode while operating in the communication mode during a preset operation time in each preset communication cycle; an operation time point setting step of setting, by the control unit, a next operation time point at which the measurement unit will operate in the measurement mode based on at least one of the communication cycle and the measurement time; as well as an operation time changing step of changing, by the control unit, an operation time for operating in the communication mode in each subsequent communication cycle based on the measured time, The time point at which the measuring unit operates in the measuring mode is synchronized with the time point at which the control unit operates in the communication mode.

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