Battery exchange device, battery state diagnosis server device and method, and battery exchange system including same

Abstract

The present invention relates to a battery exchange device, a battery state diagnosis server device and method, and a battery exchange system including the same, and the battery exchange device, battery state diagnosis server device and method, and a battery exchange system including the same discharge a specific battery pack whose charging has been interrupted, calculate at least one piece of state information for the discharged specific battery pack, resume charging of the specific battery pack, and calculate impedance information from at least one piece of state information for the battery pack, thereby determining the state of health (SoH) of the battery pack and whether or not there is a defect from the impedance information, thereby providing a highly efficient and reliable battery exchange device, battery state diagnosis server device and method, and a battery exchange system including the same.

Description

[Technical field]

[0001] This application claims the benefit of the filing date of Korean Patent Application No. 10-2021-0119789, filed with the Korean Intellectual Property Office on September 8, 2021, and all of the contents disclosed in the documents of that Korean patent application are incorporated herein by reference.

[0002] The present invention relates to a battery exchange device, a battery status diagnosis server device and method, and a battery exchange system including the same, and more specifically, to a battery exchange device, a battery status diagnosis server device and method, and a battery exchange system including the same that measures impedance in real time while charging a battery pack and determines the degree of deterioration and whether or not there is a defect in the battery pack. [Background technology]

[0003] In the past, the voltage, current, and temperature of a battery pack were measured separately to estimate the deterioration level of the battery pack. However, the conventional method of measuring the deterioration level of a battery pack has a disadvantage that the measurement result has a large error range and the capacity of the battery pack is overestimated, which causes a problem that the battery usage time is shorter than the estimated capacity of the battery.

[0004] In addition, the conventional battery pack deterioration level estimating device has difficulty in advance diagnosing internal defects in batteries of battery cells, appliances, or electronic devices, and therefore has difficulty in advance detecting fires or explosions.

[0005] Accordingly, a method for measuring the impedance of a battery has been proposed recently for accurate estimation of deterioration and diagnosis of defects in a battery pack.

[0006] However, the conventional impedance measurement method has a drawback in that it is difficult to diagnose defects in a battery pack that occur during use because it is difficult to perform real-time measurement. Summary of the Invention [Problem to be solved by the invention]

[0007] SUMMARY OF THE PRESENT EMBODIMENT In order to solve the above problems, an object of the present invention is to provide a highly efficient and reliable battery exchange device for measuring the state information of a battery pack.

[0008] Another object of the present invention to solve the above problems is to provide a highly efficient and reliable battery status diagnosis server device that measures impedance from status information of a battery pack and determines the degree of deterioration and presence or absence of a defect in the battery pack.

[0009] Another object of the present invention to solve the above problems is to provide a highly efficient and reliable battery status diagnosis method for determining the degree of deterioration and the presence or absence of a defect in a battery pack by measuring impedance from status information of the battery pack.

[0010] Another object of the present invention to solve the above problems is to provide a highly efficient and reliable battery exchange system that measures impedance from status information of a battery pack to determine the degree of deterioration and the presence or absence of a defect in the battery pack. [Means for solving the problem]

[0011] In order to achieve the above object, one embodiment of the present invention provides a battery exchange device for charging at least one battery pack, comprising: a charger for charging the battery pack; a discharger for discharging the battery pack; a measuring device for measuring at least one status information of the battery pack; and a controller for interrupting operation of the charger and controlling the discharger to operate when a charging rate of the battery pack reaches a specific reference value, and measuring status information of the battery pack in a discharged state by the measuring device.

[0012] Here, when the controller completes measuring the state information of the battery pack in a discharged state, the controller may control the charger to operate and resume charging so that the battery pack is fully charged.

[0013] In addition, the controller may cooperate with an external server to transmit at least one state information of the battery pack to the external server.

[0014] At this time, the state information of the battery pack may include at least one of the voltage (V), current (I) and temperature (T) of the battery pack.

[0015] Also, the discharger can discharge the battery pack so that a pulse-shaped discharge current is output.

[0016] In accordance with another embodiment of the present invention for achieving the above object, a battery status diagnosis server device for diagnosing a status of a battery pack using at least one status information of the battery pack includes a memory and a processor for executing at least one instruction stored in the memory, the at least one instruction including an instruction to receive and store at least one status information of the battery pack, an instruction to calculate impedance information from the at least one status information of the battery pack, and an instruction to calculate a state of health (SoH) of the battery pack from the impedance information.

[0017] At this time, at least one state information of the battery pack can be obtained from a battery exchange device.

[0018] The state information of the battery pack may include at least one of a voltage (V), a current (I) and a temperature (T) of the battery pack.

[0019] On the other hand, the at least one instruction of the battery status diagnosis server device may include an instruction to calculate a change in internal resistance of the battery pack from at least one status information of the battery pack, and an instruction to calculate a degree of health (SoH) of the battery pack from the change in internal resistance of the battery pack.

[0020] Also, the at least one command of the battery status diagnosis server device may further include a command to determine whether or not the battery pack is defective based on a state of health (SoH) of the battery pack.

[0021] In addition, the at least one instruction of the battery status diagnosis server device may include an instruction to compare the state of health (SoH) of the battery pack with a reference state of health (SoH) of a battery pack under the same conditions, and an instruction to determine that a defect has occurred in the battery pack when a difference between the state of health (SoH) of the battery pack and the reference state of health (SoH) is greater than or equal to a threshold value.

[0022] In order to achieve the above object, according to another embodiment of the present invention, a battery status diagnosis method for diagnosing a status of a battery pack using at least one status information of the battery pack includes a step of receiving and storing at least one status information of the battery pack, a step of calculating impedance information from the at least one status information of the battery pack, and a step of calculating a state of health (SoH) of the battery pack from the impedance information.

[0023] At this time, at least one state information of the battery pack can be obtained from a battery exchange device.

[0024] The state information of the battery pack may include at least one of a voltage (V), a current (I) and a temperature (T) of the battery pack.

[0025] On the other hand, the step of calculating the degree of health (SoH) of the battery pack may include a step of calculating a change in internal resistance of the battery pack from at least one state information of the battery pack, and a step of calculating the degree of health (SoH) of the battery pack from the change in internal resistance of the battery pack.

[0026] The battery state diagnosis method may further include determining whether the battery pack is defective based on a state of health (SoH) of the battery pack.

[0027] Here, the step of determining whether the battery pack is defective may include a step of comparing the state of health (SoH) of the battery pack with a reference state of health (SoH) of a battery pack under the same conditions, and a step of determining that a defect has occurred in the battery pack when a difference between the state of health (SoH) of the battery pack and the reference state of health (SoH) is equal to or exceeds a threshold value.

[0028] In accordance with yet another embodiment of the present invention to achieve the above object, a battery exchange system which charges a battery pack accommodated in at least one battery housing section and diagnoses a status of the battery pack includes a battery exchange device which interrupts charging of the battery pack, measures at least one piece of status information, and resumes charging of the battery pack, and a battery status diagnosis server device which receives at least one piece of status information of the battery pack from the battery exchange device and calculates impedance information of the battery pack.

[0029] Here, the battery exchange device can interrupt charging of the battery when the state of charge (SoC) of the battery pack reaches a specific reference value.

[0030] Also, the battery exchange device may discharge the battery pack in which charging has been interrupted, and measure the at least one state information.

[0031] On the other hand, the battery state diagnosis server device can calculate the state of health (SoH) of the battery pack by using the impedance information of the battery pack.

[0032] Furthermore, the battery state diagnosis server device can determine whether or not the battery pack is defective by using impedance information of the battery pack. Effect of the Invention

[0033] The battery exchange device, battery status diagnosis server device and method, and battery exchange system including the same according to the embodiments of the present invention can provide a highly efficient and reliable battery exchange device, battery status diagnosis server device and method, and battery exchange system including the same, which discharges a specific battery pack whose charging has been interrupted, calculates at least one piece of status information for the discharged specific battery pack, resumes charging of the specific battery pack, and calculates impedance information from at least one piece of status information for the battery pack, thereby determining the degree of health (SoH) and whether or not there is a defect of the battery pack from the impedance information. [Brief description of the drawings]

[0034] [Figure 1] FIG. 1 is a block diagram of a conventional battery exchange system. [Diagram 2] 1 is a block diagram of a battery exchange system according to an embodiment of the present invention. [Diagram 3] 4 is a graph showing a pulse signal waveform of a discharge current of a battery pack according to an embodiment of the present invention. [Figure 4] FIG. 2 is a block diagram of a battery state diagnosis server device according to an embodiment of the present invention. [Diagram 5] 4 is a flow chart for explaining a method for diagnosing the state of a battery using a battery exchange system according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Since the present invention can be modified in various ways and has various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, it is understood that this is not intended to limit the present invention to the specific embodiment, but includes all modifications, equivalents, and alternatives within the spirit and technical scope of the present invention. Similar reference numerals are used for similar components while describing each drawing.

[0036] Terms such as first, second, A, B, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only to distinguish one component from another. For example, a first component may be named a second component, and similarly, a second component may be named a first component, without departing from the scope of the present invention. The term "and / or" includes a combination of multiple associated listed items or any of multiple associated listed items.

[0037] When a component is referred to as being "coupled" or "connected" to another component, it should be understood that the component may be directly coupled or connected to the other component, but that there may be other components in between. In contrast, when a component is referred to as being "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between.

[0038] The terms used in this application are merely used to describe certain embodiments and are not intended to limit the present invention. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this application, the terms "include" or "have" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and are not intended to preclude the presence or additional possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0039] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted as having an ideal or overly formal meaning unless expressly defined in this application.

[0040] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0041] FIG. 1 is a block diagram of a conventional battery exchange system.

[0042] Referring to FIG. 1, a conventional battery exchange system is provided in the form of a battery exchange device in which a charger is individually connected to a battery receiving part in which a battery pack is received, and an external server that stores the charge amount of the battery pack.

[0043] As a result, conventional battery exchange systems only provide the charging function of the battery pack, and are therefore unable to take into account changes in the impedance of the battery pack and the resulting deterioration and defects of the battery pack, resulting in reduced reliability.

[0044] Meanwhile, the battery exchange system according to an embodiment of the present invention measures status information while charging a specific battery pack, calculates the impedance of the specific battery pack from the measured status information, and uses the calculated impedance to determine the state of health (SoH) and the presence or absence of a defect, thereby providing a highly efficient and reliable battery exchange system.

[0045] The battery exchange system according to the embodiment of the present invention will be described in more detail with reference to the following drawings.

[0046] FIG. 2 is a block diagram of a battery exchange system according to an embodiment of the present invention.

[0047] Referring to FIG. 2, a battery exchange system according to an embodiment of the present invention may include a battery exchange device D and an external battery state diagnosis server device S.

[0048] More specifically, the battery exchange device D can be linked to the external battery state diagnosis server device S through external communication. As a result, the battery exchange system can control charging of the battery pack P accommodated in the battery accommodation unit by the battery exchange device D, measure at least one piece of state information of the specific battery pack P, and determine and provide impedance information, a degradation level (State of Health, SoH), and the presence or absence of a defect of the specific battery pack P based on the at least one piece of state information of the specific battery pack P measured by the external battery state diagnosis server device S.

[0049] The above-mentioned components D and S of the battery exchange system according to the embodiment of the present invention will be described in more detail. The battery exchange device D can include at least one battery housing section.

[0050] The battery housing section can accommodate a battery pack P that is inserted from the outside by a user. This allows the battery exchange device D to charge at least one battery pack P accommodated in the battery housing section and diagnose in real time whether or not the battery pack P is defective during charging.

[0051] Furthermore, the battery exchange device D can provide the user with a battery pack P that has been fully charged, among the battery packs P housed in at least one battery housing section.

[0052] If the battery exchange device D is described in more detail by components, the battery exchange device D may include a charger 1000, a discharger 3000, a measuring device 5000, and a controller 7000.

[0053] Here, the charger 1000, the discharger 3000, and the meter 5000 may be connected in parallel, and the charger 1000, the discharger 3000, and the meter 5000 may be connected to the controller 7000 through internal communication. According to an embodiment, the internal communication may be provided as any one of UART, CAN, LIN, and Ethernet.

[0054] The charger 1000 is provided as at least one in the battery exchange device D, and can charge at least one battery pack P accommodated in a battery accommodating section. Here, the battery pack P is a device for storing energy, and can be applied to at least one electric device to provide power to the device. For example, the at least one electric device may be any one of an electric scooter, a kickboard, a car, a robot, or a drone.

[0055] According to the embodiment, when at least one battery pack P is accommodated in at least one battery accommodating section, at least one charger 1000 can be individually connected to at least one battery pack P. In other words, the charger 1000 can be connected to a specific battery pack P on a one-to-one basis.

[0056] For example, more specifically, when N battery packs P and N chargers 1000 are provided, the + and - terminals of the first charger 1000 can be connected to the + and - terminals of the battery accommodating section in which the first battery pack P1 is accommodated, respectively, and the + and - terminals of the Nth charger 1000 can be connected to the + and - terminals of the battery accommodating section in which the Nth battery pack P1 is accommodated, respectively. N It can be connected to the + and - terminals of the battery housing part in which the battery is housed.

[0057] When the charger 1000 receives a first control signal from the controller 7000 described below, it can convert the AC power provided to the battery exchange device D into DC power and charge a specific battery pack P individually connected thereto.

[0058] Furthermore, the charger 1000 can suspend charging of a specific battery pack P that is being charged when it receives a second control signal from the controller 7000, which will be described later. According to an embodiment, the controller 7000, which will be described later, can transmit a second control signal to the charger 1000 when the charge level of a specific battery pack P that is being charged meets a specific reference value. This enables the charger 1000 to suspend charging of the specific battery pack P that is being charged. For example, the second control signal can be transmitted when the charge level of a specific battery pack P reaches 50%. End When it is, it can be transmitted.

[0059] The discharger 3000 is provided as at least one in the battery exchange device, and is capable of discharging at least one battery pack P accommodated in the battery accommodating section.

[0060] More specifically, when at least one battery pack P is accommodated in at least one battery accommodating section, at least one discharger 3000 may be individually connected to at least one battery pack P. In other words, the discharger 3000 may be connected to a specific battery pack P on a one-to-one basis.

[0061] For example, when N battery packs P and N dischargers 3000 are provided, the + and - terminals of the first discharger 3000 can be connected to the + and - terminals of the battery accommodating section in which the first battery pack P1 is accommodated, respectively, and the + and - terminals of the Nth discharger 3000 can be connected to the + and - terminals of the Nth battery pack P1, respectively. N It can be connected to the + and - terminals of the battery housing part in which the battery is housed.

[0062] When the discharger 3000 receives a third control signal from the controller 7000, which will be described later, it can discharge a specific battery pack P that is individually connected.

[0063] According to the embodiment, the discharger 3000 may receive a third control signal from the controller 7000. More specifically, the discharger 3000 may receive the third control signal from the controller 7000 after the charging rate of the battery pack P satisfies a specific reference value and charging is interrupted.

[0064] The discharger 3000 can discharge the battery pack P when it receives a third control signal from the controller 7000 .

[0065] At this time, the discharger 3000 can discharge the specific battery pack P so that the discharge current is output in a pulse signal waveform.

[0066] FIG. 3 is a graph showing a pulse signal waveform of a discharge current of a battery pack according to an embodiment of the present invention.

[0067] Referring to FIG. 3, the discharger 3000 can adjust at least one parameter of the amplitude, period, and frequency so that the discharge current of a specific battery pack P has various pulse waveforms.

[0068] According to an embodiment, the discharger 3000 can discharge the battery pack P such that a discharge current is output in one period within 10 seconds at a rate of 0.5C.

[0069] According to another embodiment, the discharger 3000 can discharge the battery pack P such that a discharge current is output in three periods within 20 seconds at a 1C rate.

[0070] Here, the C rate can be defined as the amount of discharge that can be achieved during a certain period of time when the battery pack is discharged at a specific constant current. For example, when a battery pack with a charging capacity of 3000 mA / h is used, the discharger 3000 according to the embodiment can output a maximum discharge current of 3000 mA at a 1C rate.

[0071] However, the battery exchange device D is not limited to the disclosed one, and instead of the discharger 3000, the charger 1000 can be adjusted to output a charging current in the form of a pulse signal.

[0072] Referring back to FIG. 1, the measuring device 5000 may receive a fourth control signal from the controller 7000 to measure at least one status information of the battery pack P.

[0073] To explain more specifically with reference to the embodiment, when at least one battery pack P is accommodated in at least one battery accommodating section, at least one measuring device 5000 can be individually connected to at least one battery pack P. In other words, the measuring device 5000 can be connected to a specific battery pack P on a one-to-one basis.

[0074] For example, when N battery packs P and N measuring devices 5000 are provided, the + and - terminals of the first measuring device 5000 can be connected to the + and - terminals of the battery housing portion housing the first battery pack P1, respectively, and the + and - terminals of the Nth measuring device 5000 can be connected to the + and - terminals of the Nth battery pack P1, respectively. N It can be connected to the + and - terminals of the battery housing part in which the battery is housed.

[0075] However, the measuring device 5000 is not limited to the disclosed one and may be provided in a single form. More specifically, one measuring device 5000 may be connected to at least one switch (not shown) connected to at least one battery pack P. Thus, the measuring device 5000 may measure status information of at least one battery pack P connected to the switch in a one-to-one relationship according to the On / Off of the at least one switch.

[0076] As described above, when the measuring device 5000 receives a fourth control signal from the controller 7000, which will be described later, it can measure at least one piece of status information of a specific battery pack P individually connected thereto.

[0077] To explain this in more detail according to the embodiment, the measuring device 5000 may receive a fourth control signal from the controller 7000. Here, the fourth control signal may be transmitted after the controller 7000 transmits the third control signal. In other words, the measuring device 5000 may measure at least one status information from a specific battery pack P in a discharging state. For example, the at least one status information may include at least one of a voltage (V), a current (I), and a temperature (T).

[0078] Thereafter, the measuring device 5000 can transmit at least one measured status information to the controller 7000 described below.

[0079] As described above, the controller 7000 can be connected to the charger 1000, the discharger 3000, and the meter 5000 through internal communication. Thus, the controller 7000 can transmit operation control signals to the charger 1000, the discharger 3000, and the meter 5000, or receive at least one piece of measurement information from the charger 1000, the discharger 3000, and the meter 5000.

[0080] According to an embodiment, when a battery pack P is accommodated in at least one battery accommodating section, the controller 7000 may transmit a first control signal to a specific charger 1000 connected to the battery accommodating section. Here, the first control signal may be a control signal for starting the operation of the charger 1000.

[0081] According to another embodiment, the controller 7000 can send a second control signal to the charger 1000 when the state of charge (SoC) of a specific battery pack P reaches a specific reference value during operation of the charger 1000 according to the first control signal. Here, the second control signal can be a control signal for interrupting operation of the charger 1000, and the specific reference value of the state of charge (SoC) of the specific battery pack can be 50%.

[0082] In other words, the controller 7000 detects when the state of charge (SoC) of a particular battery pack is 50%. End In this case, a second control signal can be sent to the charger 1000 to interrupt charging of the specific battery pack P.

[0083] In addition, the controller 7000 may transmit a third control signal to the discharger 3000 connected in parallel to the charger 1000 after transmitting the second control signal to the charger 1000 .

[0084] Here, the third control signal is a signal that controls the operation of the discharger 3000, and the discharger 3000 can discharge the battery pack P, whose charging has been interrupted by the second control signal, so that a pulsed discharge current is output.

[0085] Thereafter, the controller 7000 can send a fourth control signal to the measuring device 5000 connected in parallel with the charger 1000 and the discharger 3000. In other words, the controller 7000 can operate the measuring device 5000 and receive at least one status information of the specific battery pack P measured by the measuring device 5000.

[0086] In addition, the controller 7000 can be connected to a battery state diagnosis server device S, which will be described later, through external communication. Here, the external communication may be at least one of wired wireless communication such as Ethernet, 3G, 4G, and 5G.

[0087] The controller 7000 is connected to an external battery status diagnosis server device S and can transmit status information of a specific battery pack P received from the measuring device 5000 to the battery status diagnosis server device S. Thereafter, the controller 7000 can receive impedance information of the specific battery pack P calculated from the external battery status diagnosis server device S.

[0088] Here, the impedance information of the specific battery pack P can be calculated by the external battery state diagnosis server device S using the state information of the specific battery pack P.

[0089] Thereafter, the controller 7000 can transmit a first control signal to the charger 1000 connected to the specific battery pack P. This allows the charger 1000 to resume charging the specific battery pack P whose charging has been interrupted, and to fully charge the specific battery pack P.

[0090] The battery state diagnosis server device S can be linked to the controller 7000 through external communication. Thus, the battery state diagnosis server device S can store at least one state information of a specific battery pack P received from the controller 7000. Here, the state information can include voltage (V), current (I), and temperature (T) information of the specific battery pack P as described above.

[0091] The battery state diagnosis server device S can diagnose the state of the battery pack P in real time using the received state information of the specific battery pack P.

[0092] More specifically, the battery state diagnosis server device S can calculate impedance information of a specific battery pack P using state information of the specific battery pack P received by the controller 7000.

[0093] The battery state diagnosis server device S can store the calculated impedance information of the specific battery pack P, and transmit the stored impedance information to the controller 7000.

[0094] The battery state diagnosis server device S can calculate the degree of deterioration (State of Health, SoH) of a particular battery pack P based on the impedance information of the battery pack P.

[0095] According to the embodiment, the battery state diagnosis server device S can calculate a change in the internal resistance of a specific battery pack P in response to a change in the impedance of the specific battery pack P.

[0096] Thereafter, the battery state diagnosis server device S can calculate the deterioration level of the specific battery pack P from the calculated change in internal resistance. For example, if the internal resistance increases, the life of the specific battery pack P may become shorter and the deterioration level (SoH) may become higher.

[0097] Furthermore, the battery state diagnosis server device S can determine whether or not a specific battery pack P has a defect based on the impedance information of the specific battery pack P.

[0098] To explain more specifically using an embodiment, the battery status diagnosis server device S can compare the degree of health (SoH) of a specific battery pack P calculated from the impedance change of the specific battery pack P with the degree of health (SoH) of a reference battery pack under the same conditions.

[0099] At this time, if the degree of health (SoH) of a specific battery pack P differs from the reference degree of health (SoH) by a threshold value or more, the battery state diagnosis server device S can determine that a defect has occurred in the specific battery pack P. Here, the defect can include defects in a battery cell, an electric device, an appliance, etc.

[0100] FIG. 4 is a block diagram of a battery state diagnosis server device according to an embodiment of the present invention. Referring to FIG. 4, the battery server diagnostic device S may include a memory 100 , a processor 200 , a transceiver device 300 , an input interface device 400 , an output interface device 500 and a storage device 600 .

[0101] According to the embodiment, the components 100, 200, 300, 400, 500, and 600 included in the battery server diagnostic device S are connected by a bus 700 and can communicate with each other.

[0102] Among the components 100, 200, 300, 400, 500, and 600 of the battery server diagnostic device S, the memory 100 and the storage device 600 may be composed of at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory 100 and the storage device 600 may be composed of at least one of a read only memory (ROM) and a random access memory (RAM).

[0103] Among other things, memory 100 may contain at least one instruction that is executed by processor 200 .

[0104] According to an embodiment, the at least one command may include an command to receive and store at least one status information of the battery pack, an command to calculate impedance information from the at least one status information of the battery pack, and an command to calculate a state of health (SoH) of the battery pack from the impedance information.

[0105] The processor 200 may represent a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to embodiments of the present invention are performed.

[0106] The processor 200 is capable of executing at least one program command stored in the memory 100, as described above.

[0107] The battery exchange system including the battery exchange device and the battery state diagnosis server device according to the embodiment of the present invention has been described above. In the following, a battery state diagnosis method using the battery exchange system will be described in more detail.

[0108] FIG. 5 is a flow diagram for explaining a method for diagnosing the state of a battery using a battery exchange system according to an embodiment of the present invention.

[0109] Referring to FIG. 5, the battery exchange system can check whether a specific battery pack P in a discharged state is accommodated in the battery accommodating section (S1000).

[0110] At this time, when a battery pack P is accommodated in at least one battery accommodating section, the battery exchange system can charge the battery pack P by operating the charger 1000 connected to the battery accommodating section using a first control signal from the controller 7000 (S2000).

[0111] Thereafter, when the battery pack P being charged by the first control signal reaches a specific criterion threshold (S3000), the battery exchange system can interrupt the operation of the charger 1000 using a second control signal of the controller 7000 (S4000). Here, the specific criterion may be the state of charge (SoC) of the battery pack. In other words, the battery exchange system can interrupt the operation of the charger 1000 using the second control signal of the controller 7000 when the state of charge (SoC) of the battery pack P being charged is 50% or more.

[0112] Thereafter, the battery exchange system can operate the discharger 3000 using the third control signal of the controller 7000. Thus, the battery exchange system can discharge the battery pack P whose charging has been interrupted by the second control signal (S5000). Here, the discharger 3000 can discharge the specific battery pack P so as to output a pulse-shaped signal waveform that clearly indicates the change in the discharge current.

[0113] Thereafter, the battery exchange system can operate the measuring device 5000 using the fourth control signal of the controller 7000. Thus, the battery exchange system can measure at least one state information of the specific battery pack in the discharged state (S6000). Here, the at least one state information can include at least one of the voltage (V), the current (I), and the temperature (T) as described above.

[0114] Thereafter, the battery exchange system can store at least one piece of measured status information in the battery status diagnosis server device S (S7000).

[0115] Meanwhile, the battery exchange system can operate the charger 1000 in response to a first control signal from the controller 7000 to recharge the particular battery pack P for which charging has been interrupted until it is fully charged (S8000).

[0116] Furthermore, the battery exchange system can calculate impedance information of a specific battery pack P using at least one piece of status information stored in the battery status diagnosis server device S (S9000).

[0117] The battery exchange system can use the battery state diagnosis server device S to calculate the degree of deterioration (State of Health, SoH) of the specific battery pack P based on the impedance information of the specific battery pack P (S10000).

[0118] To explain in more detail with reference to an embodiment, the battery exchange system can calculate a change in internal resistance of the specific battery pack P according to a change in impedance of the specific battery pack P. Then, based on the calculated change in internal resistance, the battery exchange system can calculate the deterioration level of the specific battery pack P. For example, if the internal resistance increases, the life of the specific battery pack P may be shortened, and the deterioration level of the specific battery pack P may increase.

[0119] Furthermore, the battery exchange system can use the battery state diagnosis server device S to determine whether or not the specific battery pack P has a defect based on the impedance information of the specific battery pack P (S11000).

[0120] To explain more specifically using an embodiment, the battery exchange system can use a battery status diagnosis server device S to compare the degree of health (SoH) of a specific battery pack P of the battery pack calculated from the impedance change of the specific battery pack P with the degree of health (SoH) of a reference battery pack under the same conditions.

[0121] At this time, if the degree of health (SoH) of a specific battery pack P has a difference from the reference degree of health (SoH) that is equal to or greater than a threshold value, the battery state diagnosis server device S in the battery exchange system can determine that a defect has occurred in the specific battery pack P. Here, the defect can include defects in a battery cell, an electrical device, an appliance, etc.

[0122] As described above, a battery exchange device, a battery state diagnosis server device and method, and a battery exchange system including the same according to the embodiments of the present invention can be provided.

[0123] The battery exchange device, battery status diagnosis server device and method, and battery exchange system including the same according to the embodiments of the present invention can provide a highly efficient and reliable battery exchange device, battery status diagnosis server device and method, and battery exchange system including the same, which discharges a specific battery pack whose charging has been interrupted, calculates at least one piece of status information for the discharged specific battery pack, resumes charging of the specific battery pack, and calculates impedance information from at least one piece of status information for the battery pack, thereby determining the degree of health (SoH) and whether or not there is a defect of the battery pack from the impedance information.

[0124] The operation of the method according to the embodiment of the present invention can be embodied as a computer readable program or code in a computer readable recording medium. The computer readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. In addition, the computer readable recording medium can be distributed to computer systems connected via a network, and the computer readable program or code can be stored and executed in a distributed manner.

[0125] Additionally, the computer readable recording medium may include a hardware device specially configured to store and execute program instructions, such as a ROM, a RAM, a flash memory, etc. The program instructions may include not only machine code, such as produced by a compiler, but also high-level language code that can be executed by a computer using an interpreter, etc.

[0126] Some aspects of the invention have been described in the context of an apparatus, but it may also be presented in terms of a corresponding method, where a block or apparatus corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may be presented in terms of a corresponding block or item or feature of a corresponding apparatus. Some or all of the method steps may be performed by (or using) a hardware apparatus, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, one or more of the most important method steps may be performed by such an apparatus.

[0127] Although the present invention has been described with reference to preferred embodiments thereof, those skilled in the art will understand that various modifications and variations of the present invention can be made without departing from the spirit and scope of the present invention as set forth in the following claims. [Explanation of symbols]

[0128] 1000: Charger 3000: Discharger 5000: Measuring device 7000: Controller 9000: Server 100: Memory 200: Processor 300: Transmitter / receiver 400: Input interface device 500: Output interface device 600: Storage device 700: Bus P: Battery pack

Claims

1. A battery exchange device including a plurality of battery housings and a controller, Each of the plurality of battery housing sections is a charger that charges the battery packs accommodated in each of the plurality of battery accommodation sections; a discharger for discharging the battery pack; and a meter for measuring at least one status information of the battery pack; Equipped with the controller interrupts the operation of the charger when the charging rate of the battery pack reaches a specific reference value, controls the discharger to operate, and measures state information of the battery pack in a discharging state by the meter; Battery replacement device.

2. 2 . The battery exchange device according to claim 1 , wherein the controller, upon completing measurement of state information of the battery pack in a discharged state, controls the charger to operate and resumes charging so that the battery pack is fully charged.

3. The battery exchange device according to claim 1 , wherein the controller cooperates with an external server to transmit at least one state information of the battery pack to the external server.

4. The battery exchange device according to claim 1 , wherein the state information of the battery pack includes at least one of a voltage, a current, and a temperature of the battery pack.

5. 5. The battery exchange device according to claim 1, wherein the discharger discharges the battery pack so as to output a pulsed discharge current.

6. 1. A server device for diagnosing a state of a battery pack using at least one piece of state information of the battery pack, The server device includes: Memory, and A processor for executing at least one instruction stored in said memory. Including, The at least one instruction: instructions for receiving and storing at least one status information of the battery pack; instructions for calculating impedance information from at least one state information of the battery pack; and A command to calculate a deterioration level of the battery pack from the impedance information. Including, The at least one instruction: instructions to calculate a change in internal resistance of the battery pack from the impedance information; and A command to calculate a deterioration level of the battery pack from a change in the internal resistance of the battery pack. A battery state diagnosis server device comprising:

7. The battery status diagnosis server device according to claim 6 , wherein the at least one state information of the battery pack is obtained from a battery exchange device.

8. 7. The battery state diagnosis server device according to claim 6, wherein the state information of the battery pack includes at least one of a voltage, a current, and a temperature of the battery pack.

9. The at least one instruction:

9. The battery state diagnosis server device according to claim 6, further comprising a command for determining whether or not said battery pack is defective based on a deterioration level of said battery pack.

10. The at least one instruction: instructions for comparing the deterioration level of the battery pack with a reference deterioration level of a battery pack under the same conditions; and a command to determine that a defect has occurred in the battery pack when a difference between the deterioration level of the battery pack and the reference deterioration level is equal to or exceeds a threshold value; The battery state diagnosis server device according to claim 9 .

11. 1. A method for diagnosing a state of a battery pack using at least one state information of the battery pack, comprising: receiving and storing at least one status information of the battery pack; calculating impedance information from at least one state information of the battery pack; and Calculating a deterioration level of the battery pack from the impedance information. Including, The step of calculating a deterioration level of the battery pack includes: calculating a change in internal resistance of the battery pack from the impedance information; and Calculating a deterioration level of the battery pack from a change in the internal resistance of the battery pack. A battery state diagnosis method comprising:

12. The method of claim 11, wherein the at least one status information of the battery pack is obtained from a battery exchange device.

13. The battery state diagnosis method according to claim 11 , wherein the state information of the battery pack includes at least one of a voltage, a current, and a temperature of the battery pack.

14. The battery state diagnosis method according to any one of claims 11 to 13, further comprising the step of determining whether or not the battery pack is defective based on a deterioration level of the battery pack.

15. The step of determining whether or not the battery pack is defective includes: Comparing the deterioration level of the battery pack with a reference deterioration level of a battery pack under the same conditions; and determining that a defect has occurred in the battery pack when a difference between the deterioration level of the battery pack and the reference deterioration level is equal to or exceeds a threshold value; The battery state diagnosis method according to claim 14 , comprising:

16. 1. A battery exchange system that charges a battery pack accommodated in at least one battery accommodating section and diagnoses a state of the battery pack, a battery exchange device that interrupts charging of the battery pack, measures at least one state information, and resumes charging of the battery pack; and a battery state diagnosis server device that receives at least one state information of the battery pack from the battery exchange device and calculates impedance information of the battery pack; Including, The battery state diagnosis server device includes: A battery exchange system that calculates a change in internal resistance of the battery pack from the impedance information of the battery pack, and calculates a deterioration level of the battery pack from the change in internal resistance of the battery pack.

17. The battery exchange device includes:

17. The battery exchange system according to claim 16, wherein charging of the battery pack is interrupted when the charging rate of the battery pack reaches a specific reference value.

18. The battery exchange device includes: The battery exchange system according to claim 16 , further comprising discharging the battery pack in which charging has been suspended to measure the at least one state information.

19. The battery state diagnosis server device includes: The battery exchange system according to any one of claims 16 to 18, wherein the presence or absence of a defect in the battery pack is determined using a degree of deterioration of the battery pack.

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