KR20200072295A - Battery management system, vehicle and controlling method for controlling the same - Google Patents

Abstract

The present invention relates to a battery management system, a vehicle including the same, and a method for controlling the vehicle. According to an embodiment of the present invention, the battery management system comprises: a communication unit configured to wirelessly communicate with an electronic device; a control unit configured to extract a main schedule from schedule information of a user when the communication unit receives the schedule information of the user from the electronic device through wireless communication, and to calculate an amount of a charging current when the electronic device starts to be charged in a vehicle charging module based on the extracted main schedule; and a current control unit configured to perform duty ratio control to supply the calculated amount of the charging current to the charging module.

Description

Battery management system, vehicle and vehicle control method including same {BATTERY MANAGEMENT SYSTEM, VEHICLE AND CONTROLLING METHOD FOR CONTROLLING THE SAME}

The present invention relates to a battery management system, a vehicle including the same, and a method for controlling the vehicle.

In general, most electronic devices require charging. In this regard, the demand for charging electronic devices is increasing in the vehicle interior, and accordingly, a charging port is provided to support a more convenient charging environment for the user inside the vehicle.

In addition, the charging methods of electronic devices are diversifying today. For example, a wireless charger is supported in addition to a device that supports charging using an existing charging port.

However, unless the user arbitrarily connects the electronic device to the vehicle charging port or the wireless charger, charging of the electronic device is not performed, and in the conventional case, it was common to charge the battery at a constant charging speed by a predetermined charging mode. Accordingly, when the charging mode is set, it is common to adjust the amount of power consumption for charging in the system inside the electronic device, and thus, when the vehicle battery cannot set an appropriate charging speed, there is a problem in that the life of the vehicle battery is reduced.

Accordingly, by improving the method of charging the battery with a constant charging speed in a predetermined charging mode, it is possible for the user to select a charging mode for determining the charging speed, such as a fast charging mode or a slow charging mode. When it is necessary to complete charging, there is a problem in that it is impossible to charge as many electronic devices as desired.

In one aspect, in a battery management system, as a user determines a charging speed required for a user's electronic device in consideration of state information of an electronic device to be charged, the user wants to solve the inconvenience of having to select a charging mode arbitrarily. .

One aspect of the present invention is to provide an appropriate charging speed in determining a charging speed of a battery in a battery management system, thereby solving the problem of shortening the battery life.

In addition, an aspect of the present disclosure is to provide a battery management apparatus for controlling a charging speed and the like to charge a terminal so as not to adversely affect battery life due to overcharging when a user electronic device is charged, and a vehicle and vehicle control method including the same.

The battery management system according to an aspect, when the communication unit for wireless communication with the electronic device and the communication unit receives the user's schedule information from the electronic device through wireless communication, extracts a main schedule from the user's schedule information, and extracts the extracted schedule. A control unit calculating a magnitude of a charging current when the electronic device starts charging on a vehicle charging module based on a main schedule; And a current adjuster performing duty ratio control to supply the calculated magnitude of the charging current to the charging module.

In addition, when the electronic device is charged to the vehicle charging module, the control unit acquires battery capacity and battery charge remaining information of the electronic device, and the main unit is obtained from the time when the electronic device starts charging the vehicle charging module. The magnitude of the charging current may be calculated based on the elapsed time until a certain time point, the obtained battery capacity, and the remaining battery charge information.

In addition, the control unit may determine a charging mode of the electronic device according to the calculated magnitude of the charging current.

In addition, the current control unit may further include; at least one switch for adjusting the size of the calculated charging current.

In addition, the control unit determines at least one charging mode according to the calculated magnitude of the charging current, and the current adjusting unit further comprises: at least one switch having different duty ratios according to the at least one charging mode; It can contain.

In addition, the control unit divides the error between the obtained battery capacity and the remaining battery charge information by the elapsed time from the time the electronic device starts charging to the main charging point to the vehicle charging module to determine the magnitude of the charging current. Can decide.

In addition, the controller may extract keywords related to an outdoor schedule or a long distance schedule from the user's schedule information.

In addition, a vehicle including the battery management system according to an aspect may be provided.

A vehicle control method according to another aspect includes: wirelessly communicating with an electronic device to receive schedule information stored in the electronic device; When the user's schedule information is received from the electronic device, extracting a main schedule from the user's schedule information; Calculating a magnitude of a charging current when the electronic device starts charging on the vehicle charging module based on the extracted main schedule; And performing duty ratio control to supply the calculated magnitude of the charging current to the charging module.

In addition, when the electronic device is charged to the vehicle charging module, obtaining the battery capacity of the electronic device and the remaining battery charge information may further include.

In addition, when the electronic device starts charging the vehicle charging module based on the extracted main schedule, calculating the magnitude of the charging current; In the vehicle charging module, the size of the charging current may be calculated based on the elapsed time from the time when the electronic device starts charging to the main constant time, the obtained battery capacity, and the remaining battery charge information.

The method may further include determining a charging mode of the electronic device according to the calculated magnitude of the charging current.

In addition, performing a duty ratio control to supply the magnitude of the calculated charging current to the charging module includes: at least one switch for adjusting the magnitude of the calculated charging current has a different duty ratio; The magnitude of the charging current can be adjusted.

In addition, calculating the magnitude of the charging current when the electronic device starts charging on the vehicle charging module based on the extracted main schedule; The control unit may include an error between the obtained battery capacity and the remaining battery charge information. Divided by the elapsed time from the time when the electronic device starts charging to the main constant time in the vehicle charging module to determine the magnitude of the charging current.

In addition, when the user's schedule information is received from the electronic device, extracting a main schedule from the user's schedule information; extracting keywords related to an outdoor schedule or a long-distance schedule from the user's schedule information .

One aspect may solve the inconvenience of the user having to arbitrarily select a charging mode by determining a charging speed required for the user's electronic device in consideration of state information of the electronic device to be charged.

In addition, as the battery management system of the vehicle directly determines the charging speed of the battery, an appropriate charging speed can be provided, thereby solving the problem of shortening the battery life for the vehicle.

In addition, one side may be controlled so as not to adversely affect the battery life by overcharging when the user electronic device is charged by adjusting the charging speed of the user electronic device.

1 is a block diagram of a battery management apparatus and a schematic diagram showing a communication method of a battery management apparatus with vehicle equipment.
2 is a view illustrating a position in which a charger (charge module) can be installed in a vehicle according to an embodiment.
3 is a schematic diagram illustrating a schedule of a user electronic device acquired by a battery management apparatus according to an embodiment.
4 is a schematic diagram showing a charging current setting method of a vehicle battery according to an embodiment.
5 and 6 are schematic diagrams showing a method for setting a charging current of a vehicle battery according to an embodiment.
7 is a flowchart illustrating a method for controlling a vehicle including a battery management system in one embodiment.

The same reference numerals refer to the same components throughout the specification. This specification does not describe all elements of the embodiments, and overlaps between general contents or embodiments in the technical field to which the present invention pertains are omitted. The term'unit, module, member, block' used in the specification may be implemented by software or hardware, and according to embodiments, a plurality of'unit, module, member, block' may be implemented as one component, It is also possible that one'part, module, member, block' includes a plurality of components.

Throughout the specification, when a part is "connected" to another part, this includes not only a direct connection but also an indirect connection, and an indirect connection includes connecting through a wireless communication network. do.

Also, when a part “includes” a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise specified.

Terms such as first and second are used to distinguish one component from other components, and the component is not limited by the above-mentioned terms.

Singular expressions include plural expressions, unless the context clearly has an exception.

In each step, the identification code is used for convenience of explanation. The identification code does not describe the order of each step, and each step can be executed differently from the specified order unless a specific order is clearly stated in the context. have.

The disclosed invention relates to a vehicle charging device, a vehicle, and a vehicle control method, specifically, a vehicle charging device, a vehicle, and a vehicle provided to enable efficient management of the charging capacity of each charger for a vehicle in which a plurality of chargers are installed therein It relates to a control method.

The vehicle charging device according to the disclosed invention may be installed inside the vehicle, and the following description of the vehicle may include a description of the vehicle charging apparatus, and duplicate description will be omitted.

Hereinafter, working principles and embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a battery management system and a schematic diagram showing a communication method of an external device of the battery management system.

The battery management system (Battery Management System 200) according to an embodiment is to manage the vehicle battery 60, as shown in Figure 1, the controller 210 for controlling the overall operation of the battery management system 200 , Current control unit including a switch for adjusting the amount of current of the battery 300, the communication unit 220 for communicating with an electronic device connected to the vehicle 100 in a wired manner or an electronic device connected wirelessly to the vehicle 100 ( 230).

At this time, the vehicle battery 60 controlled by the battery management system 200 generates electric power of high voltage and supplies the generated electric power to the motor, the generator, and various electric devices in the vehicle. In addition, the vehicle battery 60 may supply power generated in electronic devices that require charging connected to the vehicle. The battery 300 may be charged by receiving power supplied from the generator.

The battery management system 200 also obtains information related to the electronic device to be charged from the charging module 185 installed inside the vehicle to manage the battery. For example, referring to FIG. 2, a possible schematic position of a charging device included in the charging module 185 is shown in a vehicle. Referring to FIG. 2, a charger (charge module) may be installed around the inside of a seat, a gear box, a center fascia, or a rear door inside a vehicle.

For example, the charging module 185 may be installed in the driver's seat 110-1 or the passenger seat 110-2 inside the vehicle, and may be installed in the center console portion around the gear box 120, It can be installed in the form of a multi-terminal around the center fascia, or around the inside of the rear door. On the other hand, the installation position of the charging module 185 is not limited by the examples illustrated in FIG. 2, and can be installed at various positions in the vehicle according to a designer's intention.

The charging module 185 may include a charging module 185 that is provided in the form of a USB charging port and charged by a wired charging method, and a charger that is charged by a wireless charging method according to an installation location in the vehicle of the charging module 185. It can be an inclusive concept. Hereinafter, for convenience of description, an embodiment of the present invention will be described by taking a case where the charger is provided in the form of a USB charging port.

Next, the battery management system 200 communicates with the user's terminal 1 over the air. The specific content of the battery management system 200 communicating with the user's terminal 1 over the air may be performed by the communication unit 220 of the battery management system 200.

Specifically, the communication unit 220 may include one or more components that enable communication with an external device, and may include, for example, at least one of a short-range communication module, a wired communication module, and a wireless communication module. The short-range communication module transmits signals using a wireless communication network at a short distance, such as a Bluetooth module, an infrared communication module, a radio frequency identification (RFID) communication module, a wireless local access network (WLAN) communication module, an NFC communication module, and a Zigbee communication module. It may include various short-range communication modules to transmit and receive.

The wired communication module includes various wires such as a controller area network (CAN) communication module, a local area network (LAN) module, a wide area network (WAN) module, or a value added network (VAN) module. In addition to communication modules, various cable communication such as Universal Serial Bus (USB), High Definition Multimedia Interface (HDMI), Digital Visual Interface (DVI), recommended standard232 (RS-232), power line communication, or plain old telephone service (POTS) It may include modules.

The wireless communication module includes a Wi-Fi module, a Wireless broadband module, global system for mobile communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), and universal mobile telecommunications system (UMTS). ), a wireless communication module supporting various wireless communication methods such as Time Division Multiple Access (TDMA), Long Term Evolution (LTE), and the like.

Accordingly, the communication unit 220 may obtain information from the user terminal 1 based on the wireless communication module. At this time, the obtained information may be data related to the schedule shown in FIG. 3.

Next, the control unit 210 controls the battery management system 200 as a whole, and the control unit 210 includes components of the vehicle 100, for example, a charging module 185, and a vehicle battery 60 ) Can be controlled. The controller 210 may include various processors including at least one chip on which an integrated circuit is formed.

The controller 210 performs an operation described above using a memory (not shown) that stores data for an algorithm or a program that reproduces the algorithm for controlling the operation of components in the vehicle 100 and data stored in the memory. It can be implemented as a processor. In this case, the memory and the processor may be implemented as separate chips, and may be implemented as a single chip according to embodiments.

These memories are non-volatile memory devices such as cache, read only memory (ROM), programmable ROM (PROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EPMROM), and flash memory or random access memory (RAM) Memory), or a hard disk drive (HDD, Hard Disk Drive), may be implemented as at least one of a storage medium such as a CD-ROM, but is not limited thereto. The memory may be a memory implemented in a separate chip from the above-described processor in relation to the controller 210, or may be implemented in a single chip from the processor.

Hereinafter, a method in which the control unit 210 acquires schedule information of the user from the user terminal 1 obtained through wireless communication to determine the output current of the vehicle battery 60 will be described. Specifically, FIG. 3 is a schematic diagram showing a schedule of the user terminal 1 acquired by the battery management system 200 according to an embodiment.

The communication unit 220 of the battery management system 200 acquires schedule information included in the user terminal from the user terminal 1 based on the wireless communication module. Accordingly, the controller 210 of the battery management system 200 extracts an outdoor or long-range battery usage keyword from the acquired schedule information, and uses it to predict whether to charge from the vehicle battery 60.

Specifically, as illustrated in FIG. 3, the communication unit 220 is schedule information and business schedule information of December 20 including long distance outing information “Pyeongtaek business trip” from the user's schedule information based on the wireless communication module 12/21 day schedule information including "IT seminar" and 12/22 day schedule information including "outside road fishing" as outdoor outing information are acquired.

At this time, the schedule information of the user acquired by the wireless communication module is not acquired selectively, but all schedule information obtainable when the user terminal 1 and the vehicle's battery management system 200 are wirelessly connected are acquired. do.

However, in order to selectively acquire data from all acquired schedule information, data selection may be performed by the controller 210 of the battery management system 200.

For example, the controller 210 extracts an outdoor or long-range battery use keyword from the acquired schedule information. Specifically, the controller 210 searches for preset keyword used for outdoor or long-distance outing in the schedule information. For example, "business trip", "trip". Keywords such as “camping”, “fishing”, “mountain”, “river”, and “sea” may be preset as keywords used for outdoor or long-distance outing. However, the keyword may be arbitrarily added or deleted by the user.

Accordingly, in the embodiment of FIG. 3, the control unit 210 may select the keyword “business” on December 20 to include a battery usage keyword for long-distance outing, and the keyword “fishing” on the 12/22 day. It can be selected that contains the keyword used for going out the door.

In addition, although not shown in the drawings, the controller 210 according to an embodiment may also use keywords related to battery use (eg, “battery charging required”).

Also, the communication unit 220 may acquire battery charging state information of the user terminal 1.

Therefore, the controller 210 of the battery management system 200 needs to predict the battery usage plan of the user terminal based on the extracted keyword information, and measure the remaining battery capacity of the user terminal based on the battery charge status information to charge the battery to full charge. Calculate the amount of current. Accordingly, FIG. 4 is a schematic diagram showing a method for setting a charging current of a vehicle battery according to an embodiment.

4, the battery management system 200 according to an embodiment charges current from the current (t0) time extracted from the schedule information of the user terminal 1 to the start (D-Day) day of the schedule extracted It shows the setting method.

For example, the extracted schedule means a date corresponding to a long-distance outing keyword, or a date corresponding to a long-out keyword.

The battery management system 200 also acquires battery capacity information of the terminal 1 through the communication unit 220. For example, it is assumed that the battery capacity of the terminal 1 requiring charging in the embodiment of FIG. 4 is 30,000mAh.

At this time, it is assumed that the primary charging has started at a time (t1) that has elapsed a certain time from the current (t0). Charging starts means a time when the user connects the terminal 1 to the charging module 185. At this time, the battery management system 200 also acquires the remaining charge information of the current user terminal 1 battery. 4, it is assumed that the remaining battery charge is 10,000mAh.

For example, in FIG. 4, the remaining time is 40 [hr] remaining from the time when the primary charging starts (t1) to the start of the extracted schedule (D-Day), and the controller 210 of the battery management system 200 is It is possible to calculate 40 [hr] information, which is the time remaining until the start of the schedule, and determine the charging current accordingly.

That is, the controller 210 may determine the magnitude of the charging current by [Equation 1] below.

[Equation 1]

(Battery capacity [mAh]-Battery charge remaining [mAh])/Remaining time (hr) = Charging current [mA].

Therefore, in the case of FIG. 4, the controller 210 determines the charging current amount with the current amount of 500 mA when the primary charging starts.

However, if the user does not connect the charging module 185 to the charging module 185 after a certain period of time has elapsed since charging is not started from the first charging start time t1, a new charging starts at the starting time t2 It may happen that the current needs to be reset.

For example, in the case of FIG. 4, it is assumed that the secondary charging is newly started at the time of the secondary charging start t2. Charging starts means a time when the user connects the terminal 1 to the charging module 185. At this time, the battery management system 200 also acquires the remaining charge information of the current user terminal 1 battery. In the case of Figure 4, it is assumed that the remaining battery charge at the time of the second charging start (t2) is 15,000mAh.

In addition, the control unit 210 calculates remaining time information from the start of the second charging (t2) to the start of the extracted schedule (D-Day). In the case of FIG. 4, that is, the remaining time from the start of the second charging (t2) is 20 [hr], and the amount of charging current when the battery is charged for 20 [hr] is based on [Equation 1]. Can be calculated.

Therefore, in the case of FIG. 4, the control unit 210 determines the charging current amount with the current amount of 750 mA when the secondary charging starts.

At this time, the control unit 210 may determine the fast charging mode or the slow charging mode when charging the terminal 1 based on the remaining time and the required charging amount information. At this time, if the amount of charging current that is greater than or equal to the preset threshold is calculated, it is determined as the fast charging mode.

Accordingly, the controller 210 may determine a mode at the time of charging in consideration of a starting point of charging to determine the remaining time and a starting point of the extracted schedule.

Next, the control unit 210 secures the calculated amount of charging current from the vehicle battery 60 to supply an appropriate current to the charging module 185 connected to the terminal 1, the current included in the battery management system 200 The control unit 230 is controlled. Specifically, the current control unit 230 includes a first switch 231 and a second switch 232, the charging current from the battery cell of the vehicle battery 60 is a constant current, the first switch 231 And the second switch 232 may vary the charging current of the battery cell. That is, in the case of the present invention, to include the two switches 231 and 232 in the current control unit 230, in order to supply the output current output from the vehicle battery 60 to the battery of the terminal 1 in various magnitudes of current A plurality of switches may be further included. For example, the control unit 210 may determine a variable duty ratio in order to accurately supply the charging current required to the terminal 1.

In the case of the present invention, the current adjusting unit 230 performs current pulse modulation through the first switch 231 or the second switch 232.

For example, FIG. 5 is a schematic diagram showing current pulse modulation when supplying charging current to the terminal 1 via the first switch 231 of the current adjusting unit 230, and FIG. 6 is a schematic diagram of the current adjusting unit 230 It is a schematic diagram showing the current pulse modulation when the charging current is supplied to the terminal 1 via the second switch 232.

Specifically, as shown in FIG. 5, the first switch 231 has a duty modulation ratio of 50%, and when the constant current in the first vehicle battery 60 is A[mA], the first switch 231 The charging module 185 is supplied with a half amount of charging current through the switch 231.

On the other hand, in the case of the second switch 232, as shown in FIG. 6, when the duty modulation ratio (Duty rate) is 100% and the constant current in the first vehicle battery 60 is A[mA], the second 2 A charging current amount of A[mA] equal to the initial constant current size is supplied to the charging module 185 through the switch 232.

Accordingly, the battery management system 200 increases convenience when rapidly charging the corresponding terminal 1 when the battery of the user terminal 1 is generally a lithium ion battery or a secondary battery, but the battery life is rapidly reduced. There is a problem that can be solved if the supply of the charging current is too small, the time required to fully buffer the time.

Accordingly, as the charging current amount is determined by obtaining the user's schedule information, it may be effective in securing convenience according to the user's situation and extending the life of the battery.

In the above, each configuration of the battery management system 200 has been described.

Hereinafter, a control operation of the battery management system 200 will be described.

First, the battery management system 200 receives certain data from the user terminal 1 (700). Specifically, the communication unit 220 in the battery management system 200 wirelessly acquires certain data from the user terminal 1. At this time, it is possible to obtain schedule information included in a specific app (Application) in the user terminal (1).

Thereafter, the battery management system 200 extracts a main schedule keyword from the received schedule data (710). At this time, the main keyword to be extracted is a keyword that is determined by the user to require a lot of charging from the vehicle battery 60, and the outdoor schedule or long-distance outing information may correspond to this. That is, the controller 210 in the battery management system 200 may check schedule information including the corresponding main schedule keyword, and calculate remaining time information until the schedule is generated.

In particular, when the user's terminal 1 is connected to the charging module 185 of the vehicle 100 (YES in 720), the controller 210 calculates the magnitude of the charging current in consideration of the user's schedule (730). Specifically, the battery capacity [mAh] and the remaining battery charge [mAh] of the terminal 1 at the time when the user terminal 1 is connected, and elapsed from the time when the user terminal 1 is connected to the time when the corresponding schedule occurs The amount of charging current can be determined in consideration of time.

In addition, although the control unit 210 is not illustrated in FIG. 7, the control unit 210 may determine a fast charging mode or a slow charging mode according to the size of the charging current determined by the control unit 210.

In addition, the control unit 210 controls the current duty ratio of the current output from the vehicle battery 60 in order to supply the current to the user terminal 1 according to the calculated size of the charging current (740). That is, by controlling the duty ratio according to the size of the charging current for supplying the current size of the constant current output from the vehicle battery 60 to the user terminal 1, the size of the charging current is adjusted, and the terminal is set to the size of the charging current. The battery of the terminal 1 may be charged by supplying a current to the terminal 750.

A vehicle charging device, a vehicle, and a control method for a vehicle according to the disclosed invention have been described above. The technical spirit of the invention is not limited by the examples described above, and should be broadly understood as a concept including changes within a range that can be easily considered by a person skilled in the art.

1: Terminal
60: for vehicles
100: vehicle
200: battery management system
210: control unit
220: communication unit
230: current control unit
231: first switch
232: second switch

Claims (8)

A communication unit wirelessly communicating with the electronic device;
When the communication unit receives the user's schedule information from the electronic device through wireless communication, extracts a main schedule from the user's schedule information, and starts charging the electronic device to the vehicle charging module based on the extracted main schedule A control unit for calculating the magnitude of the charging current; And
Battery management system comprising a; current control unit for performing a duty ratio control to supply the magnitude of the calculated charging current to the charging module. According to claim 1,
The control unit,
When the electronic device is charged in the vehicle charging module, obtains battery capacity and battery charge remaining information of the electronic device,
A battery management system for calculating the magnitude of the charging current based on the elapsed time from the time when the electronic device starts charging to the vehicle charging module to the main constant time, the acquired battery capacity, and the remaining battery charge information. According to claim 2,
The control unit,
A battery management system that determines a charging mode of the electronic device according to the calculated amount of charging current. According to claim 1,
The current control unit,
And at least one switch for adjusting the magnitude of the calculated charging current. The method of claim 4,
The control unit determines at least one charging mode according to the calculated magnitude of the charging current,
The current control unit,
And at least one switch having different duty ratios according to the at least one charging mode. According to claim 2,
The controller determines the magnitude of the charging current by dividing the error between the obtained battery capacity and the remaining battery charge information by the elapsed time from the time when the electronic device starts charging to the main constant time in the vehicle charging module. Battery management system. According to claim 1,
The control unit,
A battery management system that extracts keywords related to outdoor schedules or long-distance schedules from the user's schedule information. The vehicle according to claim 1, comprising the battery management system.

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