Battery heating apparatus and operating method thereof

Abstract

A battery heating apparatus according to one embodiment herein may include: a state-of-charge calculation unit for calculating a state-of-charge (SOC) of a battery; a sensor unit for measuring the voltage, current or temperature of the battery; a control unit configured to determine a charging power of the battery based on an SOC of the battery and a maximum charging power of a charger that charges the battery, and determine whether to heat the battery based on the measured temperature and the charging power; and a heating unit for heating the battery when it is determined to heat the battery.

Description

Technical Field

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2022-0132751 filed in the Korean Intellectual Property Office on October 14, 2022, the entire contents of which are incorporated herein by reference. Technical Field

[0004] Embodiments disclosed herein relate to a battery heating device and an operating method thereof. Background Art

[0005] Recently, research and development of secondary batteries have been actively carried out. In this article, the secondary battery as a rechargeable / dischargeable battery may include all conventional nickel (Ni) / cadmium (Cd) batteries, Ni / metal hydride (MH) batteries, etc. and recent lithium-ion batteries. In secondary batteries, lithium-ion batteries have a much higher energy density than traditional Ni / Cd batteries, Ni / MH batteries, etc. In addition, lithium-ion batteries can be made small and lightweight, so that lithium-ion batteries have been used as power sources for mobile devices, and recently, the use range of lithium-ion batteries has been expanded to the power source of electric vehicles, attracting attention as the next generation of energy storage media.

[0006] The battery undergoes different chemical changes therein depending on the temperature during charging. When charging is performed in a low temperature state or a high temperature state of the battery, the performance of the battery may be reduced or the function of the battery may be permanently damaged. For example, during charging of a battery having a certain temperature or lower, a swelling phenomenon in which the battery swells may occur and thus its function may be damaged. In order to solve this problem, a system has been used to heat the battery when the temperature of the battery is a certain temperature or lower before or during charging of the battery. Summary of the invention

[0007] Technical issues

[0008] In connection with the battery heating system, conventionally, since a preset heating function is activated only when the temperature of the battery is a certain temperature or lower without considering the specifications and charging state of the battery, the specifications of the charger, etc., unnecessary power consumption occurs.

[0009] The embodiments disclosed herein are intended to provide a battery heating device and an operating method thereof, wherein power consumption caused by unnecessary battery heating can be reduced by determining whether to heat the battery based on various parameters (e.g., the charging state and temperature of the battery and the maximum charging power of the charger).

[0010] Technical problems of the embodiments disclosed herein are not limited to the above-mentioned technical problems, and other unmentioned technical problems will be clearly understood by those of ordinary skill in the art from the following description.

[0011] Technical Solution

[0012] A battery heating device according to an embodiment disclosed herein includes: a charging state calculation unit, which is configured to calculate a charging state SoC of a battery; a sensor unit, which is configured to measure a voltage, a current or a temperature of the battery; a controller, which is configured to determine a charging power of the battery based on the charging state of the battery and a maximum charging power of a charger for charging the battery, and to determine whether to heat the battery based on the measured temperature and the charging power; and a heating unit, which is configured to heat the battery when it is determined to heat the battery.

[0013] The battery heating apparatus according to the embodiment disclosed herein may further include a data acquisition unit configured to acquire information related to the maximum charging power from an external server based on a user input for specifying the charger.

[0014] In the battery heating device according to the embodiment disclosed herein, the controller may be further configured to estimate the maximum charging power based on the voltage and current of the battery measured by the sensor unit within a specified time when the battery is charged by the charger.

[0015] The battery heating device according to the embodiment disclosed herein may further include a data acquisition unit configured to acquire charging history information of the battery from the external server, wherein the controller may further be configured to estimate the maximum charging power based on the charging history information.

[0016] In the battery heating device according to the embodiment disclosed herein, the controller may also be configured to: calculate an expected charge amount of the battery based on the charge state and the target charge state; and determine a charging power less than or equal to the maximum charging power based on the expected charge amount.

[0017] In the battery heating device according to the embodiment disclosed herein, the controller may be further configured to: calculate an estimated required charging time of the battery based on the estimated charge amount; and determine the charging power based on the estimated required charging time.

[0018] In the battery heating device according to the embodiment disclosed herein, the controller may also be configured to: determine whether the battery can be charged with the charging power based on the temperature; and when it is determined that the battery cannot be charged with the charging power, determine to heat the battery.

[0019] In the battery heating device according to the embodiment disclosed herein, the controller may also be configured to: calculate a reference temperature required to charge the battery with the charging power; and when the temperature is less than the reference temperature, determine that the battery cannot be charged with the charging power.

[0020] A battery heating method according to an embodiment disclosed herein includes the following steps: calculating a state of charge SoC of a battery; determining a charging power of the battery based on the state of charge of the battery and a maximum charging power of a charger that charges the battery; measuring a temperature of the battery; determining whether to heat the battery based on the charging power and the measured temperature; and heating the battery when it is determined to heat the battery.

[0021] The battery heating method according to the embodiment disclosed herein may further include acquiring information about the maximum charging power from an external server based on a user input for specifying the charger.

[0022] The battery heating method according to the embodiment disclosed herein may further include estimating the maximum charging power based on a voltage and a current of the battery measured by the sensor unit within a specified time when the battery is charged by the charger.

[0023] In the battery heating method according to the embodiment disclosed herein, determining the charging power may include: calculating an expected charging amount of the battery based on the charging state and the target charging state; and determining a charging power less than or equal to the maximum charging power based on the expected charging amount.

[0024] In the battery heating method according to the embodiment disclosed herein, determining the charging power may include: calculating an estimated required charging time of the battery based on the estimated charge amount; and determining the charging power based on the estimated required charging time.

[0025] In a battery heating method according to an embodiment disclosed herein, determining whether to heat the battery block may include: determining whether the battery can be charged with the charging power based on the measured temperature; and when it is determined that the battery cannot be charged with the charging power, determining to heat the battery.

[0026] In a battery heating method according to an embodiment disclosed herein, determining whether the battery can be charged with the charging power may include: calculating a reference temperature required to charge the battery with the charging power; and when the measured temperature is less than the reference temperature, determining that the battery cannot be charged with the charging power.

[0027] Beneficial Effects

[0028] According to the embodiments disclosed herein, the efficiency of power consumption may be improved by determining whether to heat a battery based on various parameters (eg, a charge state and temperature of the battery and a maximum charging power of a charger).

[0029] According to the embodiments disclosed herein, power consumption caused by unnecessary battery heating can be reduced.

[0030] Furthermore, various effects directly or indirectly recognized from the present disclosure can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a block diagram of a battery heating system according to an embodiment.

[0032] Figure 2 is an operation flow chart of the battery heating apparatus according to the embodiment.

[0033] Figure 3 is an operation flow chart of the battery heating apparatus according to the embodiment.

[0034] Figure 4 is an operation flow chart of the battery heating apparatus according to the embodiment.

[0035] Figure 5 is an operation flow chart of the battery heating apparatus according to the embodiment. DETAILED DESCRIPTION

[0036] Hereinafter, various embodiments of the present disclosure will be disclosed with reference to the accompanying drawings. However, the description is not intended to limit the present disclosure to a specific embodiment, but should be construed to include various modifications, equivalents and / or substitutions according to the embodiments of the present disclosure.

[0037] It should be understood that the various embodiments of this document and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, and include various changes, equivalents, or replacements of the corresponding embodiments. With respect to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It should be understood that the singular form of a noun corresponding to an item may include one or more things, unless the relevant context clearly indicates otherwise.

[0038] As used herein, each of phrases such as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B or C,” “at least one of A, B and C,” and “at least one of A, B, or C” may include any or all possible combinations of items enumerated together in the corresponding one of the phrases. Unless otherwise specified, terms such as “first,” “second,” “first,” “second,” “A,” “B,” “(a),” or “(b)” may be used to simply distinguish corresponding components from one another and do not limit the components in other respects (e.g., importance or order).

[0039] Herein, it should be understood that when an element (e.g., a first element) is referred to as being “connected with,” “coupled with,” or “linked with,” or “coupled to,” or “connected to” another element (e.g., a second element) with or without the term “operably” or “communicatively,” this means that the element can be connected to the other element directly (e.g., by wire), wirelessly, or via a third element.

[0040] According to an embodiment of the present disclosure, the method according to various embodiments of the present disclosure disclosed herein may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or distributed online (e.g., downloaded or uploaded) via an application store, or distributed directly between two user devices. If distributed online, at least a portion of the computer program product may be temporarily generated or at least temporarily stored in a machine-readable storage medium (such as a manufacturer server, a server of an application store, or a relay server).

[0041] According to various embodiments, each component (e.g., module or program) of the above-mentioned components may include a single entity or multiple entities, and some of the multiple entities may be individually arranged in different components. According to various embodiments, one or more of the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform one or more functions of each component in the multiple components in the same or similar manner as performed by the corresponding components in the multiple components before integration. According to various embodiments, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or heuristically, or one or more operations may be performed or omitted in different orders, or one or more other operations may be added.

[0042] Figure 1 is a block diagram of a battery heating system according to an embodiment.

[0043] Reference Figure 1 , the battery heating system 100 may include a battery 110 and a battery heating device 120 .

[0044] The battery heating device 120 may include a sensor unit 121, a charging state calculation unit 122, a heating unit 123, a data acquisition unit 124 and / or a controller 125. According to some embodiments, in the battery heating device 120, the Figure 1 At least one component of the present invention may be included, or one or more other components may be added.

[0045] The sensor unit 121 may be electrically connected to the battery 110. According to an embodiment, the sensor unit 121 may measure the voltage, current, or temperature of the battery 110. According to an embodiment, the sensor unit 121 may receive a measurement control signal from the controller 125 to measure the voltage, current, or temperature of the battery 110. Whenever the measurement control signal is received from the controller 125, the sensor unit 121 may measure the voltage, current, or temperature of the battery 110. According to an embodiment, the sensor unit 121 may transfer the measured voltage value, current value, or temperature value to the charge state calculation unit 122 and / or the controller 125.

[0046] The charging state calculation unit 122 may calculate a charging state (SoC) of the battery 110. According to an embodiment, the charging state calculation unit 122 may calculate the charging state of the battery 110 based on at least one of a voltage value, a current value, or a temperature value of the battery 110 transmitted from the sensor unit 121. According to an embodiment, the charging state calculation unit 122 may transfer the calculated charging state of the battery 110 to the controller 125.

[0047] The heating unit 123 may be a heating device disposed adjacent to the battery 110 to increase the temperature of the battery 110. According to an embodiment, the heating unit 123 may heat the battery 110 whenever a heating control signal is received from the controller 125.

[0048] The data acquisition unit 124 may receive data from an external device and / or an external server by wire or wirelessly. According to an embodiment, the data acquisition unit 124 may acquire information related to the maximum charging power of a charger for charging the battery 110 or charging history information of the battery 110 from an external server. According to an embodiment, the data acquisition unit 124 may transfer the acquired data to the controller 125.

[0049] The controller 125 may be electrically connected to the sensor unit 121, the state of charge calculation unit 122, the heating unit 123, and the data acquisition unit 124. According to an embodiment, the controller 125 may execute software to control at least one other component connected to the controller 125, and may process or calculate various data. According to an embodiment, the controller 125 may control at least one other component connected to the controller 125 to perform the overall operation of the battery heating device 120. The controller 125 may include at least one of a processing device such as an application specific integrated circuit (ASIC), a digital signal processor (DSP), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), a microcontroller, or a microprocessor.

[0050] According to an embodiment, the controller 125 may determine the charging power of the battery 110. Herein, the charging power may mean the power to be supplied from the charger to the battery 110 to charge the battery 110. According to an embodiment, the controller 125 may determine the charging power of the battery 110 based on the maximum charging power of the charger for charging the battery 110 and the charging state of the battery 110.

[0051] According to an embodiment, the controller 125 may identify whether there is a user input for specifying a charger for charging the battery 110. According to an embodiment, the battery heating device 120 may obtain the user input from an external device through the data acquisition unit 124. According to another embodiment, the battery heating device 120 may include an interface unit to receive a user input for specifying a charger for charging the battery 110.

[0052] According to an embodiment, when it is recognized that there is a user input for specifying a charger, the controller 125 may obtain information about the maximum charging power of the charger from an external server. According to an embodiment, the controller 125 may obtain information about the maximum charging power of the charger specified by the user from an external server through the data acquisition unit 124. For example, when it is recognized that there is a user input for specifying a first electric vehicle charging station, the controller 125 may obtain information about the maximum charging power (e.g., 220 kW) of the first electric vehicle charging station from an external server through the data acquisition unit 124.

[0053] According to an embodiment, when it is recognized that there is no user input for specifying a charger, the controller 125 may identify whether the battery 110 is charged. For example, the controller 125 may identify whether the battery 110 is charged based on whether the battery 110 is electrically connected to an external device. In another example, the controller 125 may identify whether the battery 110 is charged based on a voltage change or a current change of the battery 110.

[0054] According to an embodiment, when it is recognized that the battery 110 is being charged, the controller 125 may estimate the maximum charging power of the charger based on the voltage and current of the battery measured within a specified time. According to an embodiment, the controller 125 may acquire the charging history information of the battery 110 from an external server through the data acquisition unit 124. In this case, the controller 125 may further estimate the maximum charging power of the charger based on the acquired charging history information.

[0055] According to an embodiment, the controller 125 may calculate an estimated charge capacity of the battery 110 based on the charge state and the target charge state of the battery 110. Here, the target charge state may be set based on a user's charging mode using an external device including the battery 110, or may be a charge state preset by the user. The estimated charge capacity may mean a difference between the target charge state and the current charge state of the battery 110.

[0056] According to an embodiment, the controller 125 may calculate an estimated required charging time of the battery 110 based on the estimated charge amount.

[0057] According to an embodiment, the controller 125 may determine the charging power of the battery 110 based on the expected charging amount or the expected required charging time. According to an embodiment, the controller 125 may determine the charging power of the battery 110 within a range lower than the maximum charging power of the charger according to the expected charging amount or the expected required charging time. For example, for a higher expected charging amount, the controller 125 may determine the charging power of the battery 110 to be higher within a range lower than the maximum charging power of the charger. In another example, for a longer expected required charging time, the controller 125 may determine the charging power of the battery 110 to be higher within a range lower than the maximum charging power of the charger.

[0058] According to an embodiment, the controller 125 may measure the temperature of the battery 110 through the sensor unit 121 .

[0059] According to an embodiment, the controller 125 may determine whether to heat the battery 110 based on the temperature of the battery 110. According to an embodiment, the controller 125 may determine whether the battery 110 can be charged with the determined charging power.

[0060] According to an embodiment, the controller 125 may calculate a reference temperature based on the determined charging power of the battery 110. Here, the reference temperature may be a temperature required to charge the battery 110 with the determined charging power. That is, the reference temperature may be a temperature at which a battery expansion phenomenon occurs when the battery 110 is charged with the determined charging power at a temperature lower than the reference temperature.

[0061] According to an embodiment, the controller 125 may identify whether the temperature of the battery 110 is less than a reference temperature.

[0062] According to an embodiment, when it is identified that the temperature of the battery 110 is less than the reference temperature, the controller 125 may determine that the battery 110 cannot be charged with the charging power. In this case, the controller 125 may heat the battery 110. According to an embodiment, the controller 125 may control the heating unit 123 to heat the battery 110.

[0063] According to an embodiment, when it is identified that the temperature of the battery 110 is greater than or equal to the reference temperature, the controller 125 may determine that the battery 110 can be charged with the charging power. In this case, the controller 125 may not perform battery heating.

[0064] In this way, the battery heating device 120 can prevent the battery swelling phenomenon by determining whether to heat the battery 110 according to whether the temperature of the battery 110 is less than the reference temperature or greater than or equal to the reference temperature. The reference temperature can be calculated according to the charging power determined based on the charging state of the battery 110 and the maximum charging power of the charger, thereby minimizing unnecessary battery heating. Therefore, the battery heating device 120 can reduce unnecessary power consumption.

[0065] Figure 2 is an operation flow chart of a battery heating device according to an embodiment. Figure 1 to describe the components Figure 2 .

[0066] Figure 2 The illustrated embodiments may be examples, and the order of operations according to various embodiments of the present disclosure may be different from Figure 2 The order shown and can be omitted Figure 2 For some of the operations shown, the order of operations may be changed, or the operations may be combined.

[0067] refer to Figure 2 In operation 205 , the battery heating device 120 may calculate the state of charge of the battery 110 . According to an embodiment, the battery heating device 120 may calculate the state of charge of the battery 110 based on at least one of a voltage value, a current value, or a temperature value of the battery 110 .

[0068] In operation 210, the battery heating device 120 may determine the charging power of the battery 110. Herein, the charging power may mean the power to be supplied from the charger to the battery 110 to charge the battery 110. According to an embodiment, the battery heating device 120 may determine the charging power of the battery 110 based on the maximum charging power of the charger for charging the battery 110 calculated in operation 205 and the charging state of the battery 110. According to an embodiment, the battery heating device 120 may determine that the charging power of the battery 110 is less than or equal to the maximum charging power of the charger. The battery heating device 120 may also determine the charging power of the battery 110 based on an estimated charging amount calculated based on the charging state of the battery 110. For example, the battery heating device 120 may determine the charging power of the battery 110 to be higher for a higher estimated charging amount.

[0069] Reference Figure 3 The operation of acquiring or estimating the maximum charging power of the charger performed by the battery heating device 120 will be described in detail. Figure 4 The operation of determining the charging power performed by the battery heating device 120 is described in detail.

[0070] In operation 215 , the battery heating device 120 may measure the temperature of the battery 110 .

[0071] In operation 220 , the battery heating device 120 may determine whether to heat the battery 110 . According to an embodiment, the battery heating device 120 may determine whether to heat the battery 110 based on the temperature of the battery 110 measured in operation 215 .

[0072] According to an embodiment, the battery heating device 120 may determine whether the battery 110 can be charged with the charging power determined in operation 210. For example, when the temperature of the battery 110 is lower than a reference temperature, the battery heating device 120 may determine that the battery 110 cannot be charged with the charging power. Here, the reference temperature may be a temperature required to charge the battery 110 with the charging power determined in operation 210. That is, the reference temperature may be a temperature at which a battery swelling phenomenon occurs when the battery 110 is charged with the charging power determined in operation 210 at a temperature lower than the reference temperature.

[0073] In this way, the battery heating device 120 can prevent the battery swelling phenomenon by determining whether to heat the battery 110 according to whether the temperature of the battery 110 is less than the reference temperature or greater than or equal to the reference temperature. The reference temperature can be calculated according to the charging power determined based on the charging state of the battery 110 and the maximum charging power of the charger, thereby minimizing unnecessary battery heating. Therefore, the battery heating device 120 can reduce unnecessary power consumption.

[0074] Reference Figure 3 The operation of determining whether to perform battery heating, which is performed by the battery heating device 120 , is described in detail.

[0075] When it is determined to heat the battery 110 in operation 220 (“Yes”), the battery heating device 120 may heat the battery 110 in operation 225 . According to an embodiment, the battery heating device 120 may control the heating unit 123 to heat the battery 110 .

[0076] Figure 3 is an operation flow chart of a battery heating device according to an embodiment. Figure 1 to describe the components Figure 3 .

[0077] Figure 3 The illustrated embodiments may be examples, and the order of operations according to various embodiments of the present disclosure may be different from Figure 3 The order shown and can be omitted Figure 3 For some of the operations shown, the order of operations may be changed, or the operations may be combined.

[0078] Figure 3 is used to describe obtaining or estimating Figure 2 FIG. 2 is a diagram of a method of determining a maximum charging power of a charger for charging the battery 110 among factors required for the battery heating device 120 to determine the charging power in operation 210 of FIG.

[0079] refer to Figure 3 In operation 305, the battery heating device 120 may identify whether there is a user input for specifying a charger for charging the battery 110. According to an embodiment, the battery heating device 120 may obtain a user input made through an external device including the battery 110. According to another embodiment, the battery heating device 120 may include an interface unit to receive a user input for specifying a charger for charging the battery 110. In this case, the battery heating device 120 may perform operation 305 based on the user input received through the interface unit.

[0080] When it is identified in operation 305 that there is a user input for specifying a charger (“Yes”), the battery heating device 120 may acquire information about the maximum charging power of the charger from an external server in operation 310. According to an embodiment, the battery heating device 120 may acquire information about the maximum charging power of the charger specified in operation 305 from an external server through the data acquisition unit 124. For example, when it is identified in operation 305 that there is a user input for specifying a first electric vehicle charging station, the battery heating device 120 may acquire information about the maximum charging power (e.g., 220 kW) of the first electric vehicle charging station from an external server through the data acquisition unit 124.

[0081] When it is identified in operation 305 that there is no user input for specifying a charger (“No”), the battery heating device 120 may identify whether the battery 110 is charged in operation 315. For example, the battery heating device 120 may identify whether the battery 110 is charged based on whether the battery 110 is electrically connected to an external device. In another example, the battery heating device 120 may identify whether the battery 110 is charged based on a voltage change or a current change of the battery 110.

[0082] When it is identified in operation 315 that the battery 110 is not charged (“No”), the battery heating device 120 may terminate the operation corresponding to Figure 3 operation.

[0083] When it is identified in operation 315 that the battery 110 is being charged ("Yes"), the battery heating device 120 may estimate the maximum charging power of the charger based on the voltage and current of the battery measured within a specified time in operation 320. According to an embodiment, the battery heating device 120 may acquire charging history information of the battery 110 from an external server. In this case, the battery heating device 120 may further estimate the maximum charging power of the charger based on the acquired charging history information.

[0084] Figure 4 is an operation flow chart of a battery heating device according to an embodiment. Figure 1 to describe the components Figure 4 .

[0085] Figure 4 The illustrated embodiments may be examples, and the order of operations according to various embodiments of the present disclosure may be different from Figure 4 The order shown and can be omitted Figure 4 For some of the operations shown, the order of operations may be changed, or operations may be combined. Figure 4 Operation 410 is omitted.

[0086] Figure 4 is used to describe in detail Figure 2 FIG. 2 is a diagram of a method of determining charging power performed by the battery heating device 120 in operation 210 of FIG.

[0087] refer to Figure 4 In operation 405, the battery heating device 120 may calculate the estimated charge amount of the battery 110. According to an embodiment, the battery heating device 120 may calculate the estimated charge amount of the battery 110 based on the Figure 2 The estimated charge capacity of the battery 110 is calculated based on the charge state calculated in operation 205 and the target charge state of the battery 110. Here, the target charge state may be set based on a charging mode of a user using an external device including the battery 110, or may be a charge state preset by a user. The estimated charge capacity may mean a difference between the target charge state and the charge state calculated in operation 205.

[0088] In operation 410 , the battery heating device 120 may calculate an estimated required charging time of the battery 110 . According to an embodiment, the battery heating device 120 may calculate an estimated required charging time of the battery 110 based on the estimated charge amount calculated in operation 405 .

[0089] In operation 415, the battery heating device 120 may determine the charging power of the battery 110. Herein, the charging power may mean the power supplied from the charger to the battery 110 to charge the battery 110. According to an embodiment, the battery heating device 120 may determine the charging power of the battery 110 based on the estimated charging amount calculated in operation 405 or the estimated required charging time calculated in operation 410.

[0090] According to an embodiment, the battery heating device 120 may determine the charging power of the battery 110 within a range lower than the maximum charging power of the charger according to the expected charging amount or the expected required charging time. For example, the battery heating device 120 may determine the charging power of the battery 110 to be higher within a range lower than the maximum charging power of the charger for a higher expected charging amount. In another example, the battery heating device 120 may determine the charging power of the battery 110 to be higher within a range lower than the maximum charging power of the charger for a longer expected required charging time.

[0091] Figure 5 is an operation flow chart of a battery heating device according to an embodiment. Figure 1 to describe the components Figure 5 .

[0092] Figure 5 The illustrated embodiments may be examples, and the order of operations according to various embodiments of the present disclosure may be different from Figure 5The order shown and can be omitted Figure 5 For some of the operations shown, the order of operations may be changed, or the operations may be combined.

[0093] Figure 5 It is used to describe in detail Figure 2 1 and 225 , in which the battery heating device 120 determines whether to perform battery heating and performs heating on the battery.

[0094] refer to Figure 5 In operation 505, the battery heating device 120 may calculate a reference temperature. According to an embodiment, the battery heating device 120 may calculate a reference temperature based on the Figure 2 The reference temperature is calculated based on the charging power determined in operation 210. Here, the reference temperature may be Figure 2 The reference temperature may be a temperature required to charge the battery 110 with the charging power determined in operation 210. That is, the reference temperature may be a temperature at which a battery swelling phenomenon occurs when the battery 110 is charged with the charging power determined in operation 210 at a temperature lower than the reference temperature.

[0095] In operation 510 , the battery heating device 120 may identify Figure 2 Whether the temperature of the battery 110 measured in operation 215 is less than the reference temperature calculated in operation 505 .

[0096] When it is identified in operation 510 that the temperature of the battery 110 is less than the reference temperature (“Yes”), the battery heating device 120 may determine in operation 515 that the battery 110 cannot be charged with the charging power.

[0097] In operation 520 , the battery heating device 120 may heat the battery 110 . According to an embodiment, the battery heating device 120 may control the heating unit 123 to heat the battery 110 .

[0098] When it is identified in operation 510 that the temperature of the battery 110 is greater than or equal to the reference temperature (“No”), the battery heating device 120 may determine that the battery 110 can be charged with the charging power in operation 525. In this case, the battery heating device 120 may not perform battery heating.

[0099] In this way, the battery heating device 120 can prevent the battery swelling phenomenon by determining whether to heat the battery 110 according to whether the temperature of the battery 110 is less than the reference temperature or greater than or equal to the reference temperature. The reference temperature can be calculated according to the charging power determined based on the charging state of the battery 110 and the maximum charging power of the charger, thereby minimizing unnecessary battery heating. Therefore, the battery heating device 120 can reduce unnecessary power consumption.

[0100] Unless otherwise specified, the above terms such as "including", "consisting of" or "having" may mean that the corresponding components may be inherent and should therefore be interpreted as further including other components rather than excluding other components. Unless otherwise defined, all terms including technical or scientific terms have the same meaning as those generally understood by ordinary technicians in the field to which the embodiments disclosed herein belong. Terms defined in dictionaries and generally used terms should be interpreted as having the same meaning as the contextual meaning of the relevant technology, and should not be interpreted as having an ideal or overly formal meaning unless they are clearly defined in this document.

Claims

1. A battery heating device, comprising: a state of charge calculation unit, the state of charge calculation unit being configured to calculate a state of charge SoC of a battery; a sensor unit configured to measure a voltage, a current or a temperature of the battery; a controller configured to determine a charging power of the battery based on the charging state of the battery and a maximum charging power of a charger that charges the battery, and to determine whether to heat the battery based on the measured temperature and the charging power; as well as A heating unit is configured to heat the battery when it is determined to heat the battery. 2 . The battery heating device according to claim 1 , further comprising a data acquisition unit configured to acquire information related to the maximum charging power from an external server based on a user input for specifying the charger. 3 .

3. The battery heating device according to claim 1, wherein: The controller is further configured to estimate the maximum charging power based on a voltage and a current of the battery measured by the sensor unit within a specified time when the battery is charged by the charger.

4. The battery heating device according to claim 3, further comprising a data acquisition unit configured to acquire charging history information of the battery from the external server, in, The controller is further configured to estimate the maximum charging power further based on the charging history information.

5. The battery heating device according to claim 1, wherein: The controller is also configured to: calculating an estimated charge capacity of the battery based on the state of charge and a target state of charge; and Based on the estimated charge amount, a charging power that is less than or equal to the maximum charging power is determined.

6. The battery heating device according to claim 5, wherein: The controller is also configured to: Based on the estimated charge amount, calculating an estimated required charging time of the battery; and The charging power is determined based on the estimated required charging time.

7. The battery heating device according to claim 1, wherein: The controller is also configured to: Based on the temperature, determining whether the battery can be charged with the charging power; and When it is determined that the battery cannot be charged with the charging power, it is determined to heat the battery.

8. The battery heating device according to claim 7, wherein: The controller is also configured to: calculating a reference temperature required to charge the battery with the charging power; and When the temperature is less than the reference temperature, it is determined that the battery cannot be charged with the charging power.

9. A battery heating method, comprising the following steps: Calculate the battery's state of charge SoC; determining a charging power of the battery based on the charging state of the battery and a maximum charging power of a charger for charging the battery; measuring a temperature of the battery; determining whether to heat the battery based on the charging power and the measured temperature; as well as When it is determined to heat the battery, the battery is heated. 10 . The battery heating method according to claim 9 , further comprising acquiring information about the maximum charging power from an external server based on a user input for specifying the charger.

11. The battery heating method according to claim 9, further comprising: The maximum charging power is estimated based on a voltage and a current of the battery measured by a sensor unit within a specified time when the battery is charged by the charger.

12. The battery heating method according to claim 9, wherein: Determining the charging power includes: calculating an estimated charge capacity of the battery based on the state of charge and a target state of charge; and Based on the estimated charge amount, a charging power that is less than or equal to the maximum charging power is determined.

13. The battery heating method according to claim 12, wherein: Determining the charging power includes: calculating an estimated required charging time of the battery based on the estimated charge amount; and The charging power is determined based on the estimated required charging time.

14. The battery heating method according to claim 8, wherein: Determining whether to heat the battery includes: determining whether the battery can be charged with the charging power based on the measured temperature; and When it is determined that the battery cannot be charged with the charging power, it is determined to heat the battery.

15. The battery heating method according to claim 14, wherein: Determining whether the battery can be charged with the charging power includes: calculating a reference temperature required to charge the battery with the charging power; and When the measured temperature is less than the reference temperature, it is determined that the battery cannot be charged with the charging power.

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