TWI702768B - Systems and methods for battery management of electronic vehicles, and related computer program products - Google Patents

Abstract

Systems and methods for battery management of electronic vehicles are provided. The system for battery management of electronic vehicles at least includes a battery storage device. First, the battery storage device is provided with at least one battery. Then, a connection state with a first network and a power supply state of an external power source are detected, wherein the external power source supplies power to the battery storage device. When it is detected that the first network is in an offline state and the power state of the external power source is an unpowered or low battery state, the power is output to the battery storage device through the at least one battery.

Description

Battery management system and method for electric vehicles, and related computer programs product

The present invention relates to a battery management system and a method thereof, and particularly relates to a battery management system and method suitable for managing batteries in a battery storage device of an electric vehicle.

In recent years, with the popularization of environmental protection awareness, the development of electric vehicles that use electric energy as a power source to replace traditional vehicles powered by fossil fuels has gradually become an important goal in the automotive field. Therefore, electric vehicles such as electric motorcycles are becoming more and more popular. universal. In order to save charging time, electric vehicle charging equipment must charge electric vehicles with higher power. In addition, for electric vehicles with different battery systems, the required charging voltage and charging current are also different. As the battery capacity of electric vehicles increases, the charging voltage required to charge electric vehicles also increases. The current charging method for electric vehicles can be directly charging the battery or removing the battery to a battery storage device for charging.

Generally speaking, a battery storage device can have multiple battery slots, and each slot can hold one or more batteries. The user of an electric vehicle can put its battery in any available slot in the battery storage device and Perform a specified operation to charge. Some battery storage devices also allow users to perform a battery exchange service, allowing users of electric vehicles to exchange their batteries with any available battery in the battery storage device, and directly place their battery in any battery storage device Available slot and perform a specified operation to take out a usable battery for use. Generally speaking, the battery storage device must be plugged in or powered by an external power source to maintain the normal operation of the machine. However, when power is interrupted due to a power outage or external power supply interruption or stop of power supply, the battery storage device cannot operate normally because the battery storage device cannot obtain the required power.

In view of this, the present invention provides a battery management system and method for a battery storage device, which can be used to continuously provide the power required for the operation of the battery storage device after the external power supply of the battery storage device is interrupted or stopped, and can extend the use time of the battery storage device , And can provide emergency handling and notification capabilities for battery storage devices in the event of a power failure.

A battery management method for an electric vehicle according to an embodiment of the present invention is applicable to a battery storage device. The method includes the following steps. First, at least one battery is provided for the battery storage device. Then, the connection status with a first network and the power supply status of an external power supply are detected, wherein the external power supply is supplied to the battery storage device. When it is detected that it is in an offline state with the first network and the power supply state of the external power source is no power supply or low power state, output power to the battery storage device through at least one battery.

A battery management system for an electric vehicle according to an embodiment of the present invention includes at least one battery storage device. The battery storage device includes at least one first slot for accommodating and charging a first battery, a network connection unit, a power detection unit, and a controller. The controller is coupled to the network connection unit, the power detection unit and the first slot, and is used to detect the connection status with a first network through the network connection unit and to detect an external device through the power detection unit The power supply status of the power supply, where the external power supply is supplied to the battery storage device, and when it is detected that the first network is offline and the power supply status of the external power supply is unpowered or low power status, power is output through at least one battery To the battery storage device.

In some embodiments, in response to detecting that the first network is offline and the power supply state of the external power supply is unpowered or low battery, a reminder message is sent to a specific target through a second network.

In some embodiments, corresponding to the detection that the first network is offline and the power supply state of the external power supply is unpowered or low power, the battery storage device enters a function limited mode, wherein, in the function limited mode , Only allow the battery storage device to perform a specific necessary operation and prohibit the battery storage device from performing other operations. In some embodiments, the specific necessary operation is a display operation.

In some embodiments, the above method further includes the following steps: providing a backup power source for the battery storage device; when it is detected that the first network is offline and the power supply state of the corresponding battery storage device is unpowered or low power state, Supply power to the battery storage device through a backup power supply; continuously detect the power supply status of one of the corresponding backup power sources; and when the power supply status of the corresponding backup power supply is When the state is no power supply or low power state, power is output to the battery storage device through at least one battery.

In some embodiments, the connection status with the first network is continuously detected and when a connection status with the first network is detected, a power shortage notification is sent to a server through the first network.

In some embodiments, the power supply state of the corresponding battery storage device is continuously detected, and when the power supply state of the corresponding battery storage device becomes a power supply state, stop outputting power to the battery storage device through at least one battery and output power to the at least one battery .

The above-mentioned method of the present invention can exist in the form of code. When the program code is loaded and executed by the machine, the machine becomes a device for implementing the invention.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following specific examples are accompanied by accompanying drawings, which are described in detail as follows.

100: Battery management system for electric vehicles

110: Battery storage device

112: first slot

113: The first battery

114: Battery detection unit

116: display unit

117: network connection unit

118: Controller

119: standby power

S310, S320, S330: steps

S410, S420: steps

Figure 1 is a schematic diagram showing a battery management system for an electric vehicle according to an embodiment of the present invention.

Figure 2 is a schematic diagram showing a battery management system for an electric vehicle according to another embodiment of the present invention.

Figure 3 is a flowchart showing a battery management method for an electric vehicle according to an embodiment of the present invention.

Figure 4 is a flowchart showing a battery management method for an electric vehicle according to another embodiment of the present invention.

Figure 1 shows a battery management system for an electric vehicle according to an embodiment of the invention. As shown in FIG. 1, the battery management system 100 for an electric vehicle according to an embodiment of the present invention includes at least one battery storage device 110. The battery storage device 110 has a specific space to accommodate the battery of the electric vehicle and can charge the battery in the space. For example, in one embodiment, the battery storage device 110 may be a charging station with multiple battery slots and charging and/or battery exchange functions, allowing users of electric vehicles to insert their electric vehicle batteries into them Charging in a battery slot or The battery of the electric vehicle can be inserted into it to perform a battery exchange service with a battery on the battery slot, but it is not limited to this. In some embodiments, the electric vehicle may be a two-wheel electric vehicle such as an electric vehicle, an electric bicycle, etc., but the present invention is not limited thereto. The battery storage device 110 may at least include one or more first slots 112, a power detection unit 114, a display unit 116, a network connection unit 117, and a controller 118. For example, the controller 118 may be a general-purpose controller, a microcontroller (Micro-Control Unit, MCU), or a digital signal controller (Digital Signal Processor, DSP), etc., to provide data analysis, processing, and calculation functions , But the present invention is not limited to this.

Each first slot 112 is used to accommodate and charge a first battery 113. The battery 113 can be any electrical energy storage device that can store or generate electric charge, and can provide at least part of the electricity consumed by the prime mover of the electric vehicle. In one embodiment, the first battery 113 is a portable rechargeable battery, where the portable rechargeable battery can include any electrical energy storage device that can store or generate charges, including but not limited to lead/acid storage batteries, nickel /Cd storage battery, lithium ion storage battery, thin film lithium storage battery, nickel/metal hybrid storage battery, and the like. In some embodiments, the first battery 113 may also be an electric energy storage device such as a super capacitor or an ultra high capacitor. For example, in one embodiment, the battery storage device 110 may include 9 slots 112, and each slot 112 can accommodate a first battery 113 of an electric vehicle such as an electric vehicle. The battery storage device 110 has a charging capability. When the first battery 113 is inserted into an available slot 112 (ie, an empty slot 112 where no battery is inserted), the battery storage device 110 can charge the first battery 113 or Management of battery exchange. The battery storage device 110 can provide a charging service, and can respond to a charging request of a user by inserting the user into the first battery 113 of the slot 112 for charging. The battery storage device 110 also provides a battery exchange service. In response to a battery exchange request of a user, one of the first batteries 113 in all the slots 112 is selected for the user to access, for use with the user’s The second battery performs battery exchange service. It must be noted that the aforementioned number of slots is only an example of this case, and the present invention is not limited to this. Any number of slots can be applied to the present invention.

The power detection unit 114 can be used to detect the power of the battery and detect the power supply status of an external power source (not shown in Figure 1) corresponding to the battery storage device 110, wherein the external power source (for example: mains) supplies power to the battery storage device 110, so that the battery storage device 110 provides the above-mentioned services. In some embodiments, the power detection unit 114 may have a detection circuit or other power detection software and hardware components to perform power detection on a specific battery to generate a power detection. Test data. For example, the power detection unit 114 may perform power detection on each first battery 113 in the first slot 112 and generate power data of each first battery 113. In some embodiments, the power detection unit 114 may have a detection circuit or other power detection software and hardware components to perform power detection on the external power supply to generate a power supply status data. In some embodiments, the power detection unit 114 can detect the power of the second battery when the user inserts a second battery into the first slot 112 and generate power data corresponding to the second battery. In one embodiment, the power data of the first battery 113 is used to indicate the current power or remaining power of the first battery 113. In other words, the controller 118 can obtain the first power data indicating the current power or the remaining power of the first battery 113 through the power detection result of the power detection unit 114, and can determine the external power supply through the power supply status data of the power detection unit 114 Power supply status. The display unit 116 is used to display related data, such as text, images, information, and user interface. In some embodiments, the display unit 116 displays a user interface through which the user can input the aforementioned charging request or the aforementioned battery exchange request. In some embodiments, the network connection unit 117 can be connected to a network, such as a wired network, a telecommunication network, and a wireless network, such as a Bluetooth network, a Wi-Fi network, and so on. In some embodiments, the network connection unit 117 may be a wireless network connection unit. With the wireless network connection unit, the battery storage device 110 may have a network access capability. The battery storage device 110 can be coupled to other electronic devices with network access capabilities through a wireless network, such as a Bluetooth network, a Wi-Fi network, etc. In one embodiment, the battery storage device 110 may be coupled to a smart phone via a wireless network, such as a Bluetooth network, a Wi-Fi network, etc. It is worth noting that, in some embodiments, the wireless network connection unit may be a network connection unit with low energy consumption technology, such as Bluetooth Smart technology. There are two modes in Bluetooth Smart technology, such as peripheral mode and central mode. Among them, in the central mode, the network connection unit can receive data from the network connection unit of other electronic devices, and has the ability to actively connect to other electronic devices. In the peripheral mode, the network connection unit can broadcast the signal, such as its own identification data. However, the network connection unit cannot actively connect to other electronic devices in the peripheral mode. In some embodiments, the wireless network connection unit is in a peripheral mode. In other words, the wireless network connection unit has a data broadcasting capability, and the wireless network connection unit can only be passively connected by other electronic devices, but cannot actively connect to other electronic devices. In some embodiments, the battery storage device 110 may use a wireless network connection unit to broadcast its identification data. By identifying the data, other electronic devices can be connected to the battery storage device. The controller 118 can control the battery storage device 110 The operation of related software and hardware and the implementation of the battery management method for electric vehicles in this case will be explained later.

Figure 2 shows a battery management system for an electric vehicle according to an embodiment of the invention. As shown in Figure 2, the battery management system 100 for an electric vehicle according to an embodiment of the present invention includes at least one battery storage device 110. The battery storage device 110 has a specific space to accommodate the battery of the electric vehicle and can charge the battery in the space. For example, in one embodiment, the battery storage device 110 may be a charging station with multiple battery slots and charging and/or battery exchange functions, allowing users of electric vehicles to insert their electric vehicle batteries into them A battery slot can be charged or the battery of an electric vehicle can be inserted into it to perform a battery exchange service with a battery on the battery slot, but it is not limited to this. In some embodiments, the electric vehicle may be a two-wheel electric vehicle such as an electric vehicle, an electric bicycle, etc., but the present invention is not limited thereto. The battery storage device 110 may at least include one or more first slots 112, a power detection unit 114, a display unit 116, a network connection unit 117, a backup power supply 119, and a controller 118. For example, the controller 118 may be a general-purpose controller, a microcontroller (Micro-Control Unit, MCU), or a digital signal controller (Digital Signal Processor, DSP), etc., to provide data analysis, processing, and calculation functions , But the present invention is not limited to this.

Each first slot 112 is used to accommodate and charge a first battery 113. The battery 113 can be any electrical energy storage device that can store or generate electric charge, and can provide at least part of the electricity consumed by the prime mover of the electric vehicle. In one embodiment, the first battery 113 is a portable rechargeable battery, where the portable rechargeable battery can include any electrical energy storage device that can store or generate charges, including but not limited to lead/acid storage batteries, nickel /Cd storage battery, lithium ion storage battery, thin film lithium storage battery, nickel/metal hybrid storage battery, and the like. In some embodiments, the first battery 113 may also be an electric energy storage device such as a super capacitor or an ultra high capacitor. For example, in one embodiment, the battery storage device 110 may include 9 slots 112, and each slot 112 can accommodate a first battery 113 of an electric vehicle such as an electric vehicle. The battery storage device 110 has a charging capability. When the first battery 113 is inserted into an available slot 112 (ie, an empty slot 112 where no battery is inserted), the battery storage device 110 can charge the first battery 113 or Management of battery exchange. The battery storage device 110 can provide a charging service, and can respond to a charging request of a user by inserting the user into the first battery 113 of the slot 112 for charging. The battery storage device 110 also provides a battery exchange service, which can respond to a user’s battery exchange request from all slots 112 One of the first batteries 113 is selected for the user to take, and is used for battery exchange service with a second battery of the user. It must be noted that the aforementioned number of slots is only an example of this case, and the present invention is not limited to this. Any number of slots can be applied to the present invention.

The power detection unit 114 can be used to detect the power of the battery and detect the power supply status of an external power source (not shown in Figure 1) corresponding to the battery storage device 110, wherein the external power source (for example: mains) supplies power to the battery storage device 110, so that the battery storage device 110 provides the above-mentioned services. In some embodiments, the power detection unit 114 may have a detection circuit or other power detection software and hardware components to perform power detection on a specific battery to generate power detection data. For example, the power detection unit 114 may perform power detection on each first battery 113 in the first slot 112 and generate power data of each first battery 113. In some embodiments, the power detection unit 114 may have a detection circuit or other power detection software and hardware components to perform power detection on the external power supply to generate a power supply status data. In some embodiments, the power detection unit 114 can detect the power of the second battery when the user inserts a second battery into the first slot 112 and generate power data corresponding to the second battery. In one embodiment, the power data of the first battery 113 is used to indicate the current power or remaining power of the first battery 113. In other words, the controller 118 can obtain the first power data indicating the current power or the remaining power of the first battery 113 through the power detection result of the power detection unit 114, and can determine the external power supply through the power supply status data of the power detection unit 114 Power supply status. The display unit 116 is used to display related data, such as text, images, information, and user interface. In some embodiments, the display unit 116 displays a user interface through which the user can input the aforementioned charging request or the aforementioned battery exchange request. In some embodiments, the network connection unit 117 can be connected to a network, such as a wired network, a telecommunication network, and a wireless network, such as a Bluetooth network, a Wi-Fi network, and so on. In some embodiments, the network connection unit 117 may be a wireless network connection unit. With the wireless network connection unit, the battery storage device 110 may have a network access capability. With the wireless network connection unit, the battery storage device 110 can have a network access capability. The battery storage device 110 can be coupled to other electronic devices with network access capabilities through a wireless network, such as a Bluetooth network, a Wi-Fi network, etc. In one embodiment, the battery storage device 110 may be coupled to a smart phone via a wireless network, such as a Bluetooth network, a Wi-Fi network, etc. It is worth noting that, in some embodiments, the wireless network connection unit may be a network connection unit with low energy consumption technology, such as Bluetooth Smart technology. There are two modes in Bluetooth Smart technology, such as peripheral mode, and Central mode. Among them, in the central mode, the network connection unit can receive data from the network connection unit of other electronic devices, and has the ability to actively connect to other electronic devices. In the peripheral mode, the network connection unit can broadcast the signal, such as its own identification data. However, the network connection unit cannot actively connect to other electronic devices in the peripheral mode. In some embodiments, the wireless network connection unit is in a peripheral mode. In other words, the wireless network connection unit has a data broadcasting capability, and the wireless network connection unit can only be passively connected by other electronic devices, but cannot actively connect to other electronic devices. In some embodiments, the battery storage device 110 may use a wireless network connection unit to broadcast its identification data. By identifying the data, other electronic devices can be connected to the battery storage device. The backup power source 119 can provide power to the battery storage device 110 under a specific condition for short-term power use. For example, in one embodiment, the backup power source 119 may be an uninterruptible power system, but the invention is not limited to this. The controller 118 can control the operations of related software and hardware in the battery storage device 110 and execute the battery management method of the electric vehicle in this case. The relevant details will be described later.

Figure 3 shows a battery management method for an electric vehicle according to an embodiment of the invention. The battery management method for an electric vehicle according to the embodiment of the present invention is applicable to a battery management system, such as the battery management system 100 in FIGS. 1 and 2 and is executed by the controller 118 in the battery storage device 110. For example, in one embodiment, the battery storage device 110 may be a charging station with multiple battery slots and charging and/or battery exchange functions, allowing users of electric vehicles to insert their electric vehicle batteries into them A battery slot can be charged or the battery of an electric vehicle can be inserted into it to perform a battery exchange service with a battery on the battery slot, but it is not limited to this. In this embodiment, it is assumed that the battery storage device 110 is connected to an external power source (for example, commercial power) to charge the first battery 113.

First, in step S310, at least one battery (for example, the first battery 113) of the battery storage device is provided. Then, in step S320, the connection status with a first network and the power supply status of an external power supply are detected. Specifically, the battery storage device can detect the connection status with the first network through the network connection unit and can detect the power supply status of the external power supply of the corresponding battery storage device through the power detection unit. When the network connection unit is connected to the first network, it is in a connection state, and when the network connection unit is not connected to the first network, it is in an offline state. Similarly, when the external power supply has enough power to supply the battery storage device, the power supply state of the external power supply is the power supply state. Conversely, when the external power supply does not have enough power to supply the battery storage device When the device is stored or the power supply to the battery storage device is stopped, the power supply state of the external power supply is no power supply or low power state. In some embodiments, the power detection unit 114 may have a detection circuit or other power detection software and hardware components to perform power detection on a specific battery to generate power detection data. For example, the power detection unit 114 may perform power detection on each first battery 113 in the first slot 112 and generate power data of each first battery 113. In some embodiments, the power detection unit 114 may have a detection circuit or other power detection software and hardware components to perform power detection on the external power supply to generate a power supply status data. When it is detected that it is in an offline state with the first network and the power supply state of the external power source is no power supply or low power state, in step S330, power is output to the battery storage device through at least one battery. Thus, when the connection with the first network is offline and the power supply state of the external power supply is no power supply or low power state, the battery in the battery storage device can output power to the battery storage device to maintain the normal operation of the battery storage device.

In some embodiments, the battery storage device can detect and obtain a current power level of each battery through the power detection unit. In this embodiment, the battery refers to the battery available for use in the battery storage device. It is worth noting that, in some embodiments, the power detection unit may have a detection circuit or other power detection software and hardware components to perform power detection on each battery to generate power data of the corresponding battery. In one embodiment, the power data of the corresponding battery is used to indicate the current power of the battery. After obtaining the current power of all batteries, the battery storage device determines the location and number of power supply batteries to be used to power the battery storage device according to the current power of all batteries, wherein the remaining power of the selected power supply battery is higher than a predetermined power. In some embodiments, the predetermined power amount may be defined as a power amount higher than 80%, but is not limited thereto. It is reminded that the value of the established power can be adjusted according to the actual use environment and strategy. In an embodiment, the battery storage device may first find out one or more candidate batteries that meet the requirement of a power higher than the predetermined power from all the second batteries, and then select one of the candidate batteries as the power supply battery. In one embodiment, the power supply battery is the one with the highest power among the candidate batteries. In another embodiment, the power supply battery is the one with the lowest power among the candidate batteries. In another embodiment, the power supply battery is one of the candidate batteries randomly selected, but the invention is not limited to this.

Figure 4 shows a battery management method for an electric vehicle according to another embodiment of the present invention. The battery management method for an electric vehicle according to the embodiment of the present invention is applicable to a battery management system, such as the battery management system 100 in FIGS. 1 and 2 and is executed by the controller 118 in the battery storage device 110. For example, in one embodiment, the battery storage device 110 may have multiple batteries A charging station with charging and/or battery swapping functions allows users of electric vehicles to insert their electric vehicle’s battery into one of the battery slots for charging or to insert their electric vehicle’s battery into it for charging. A battery in the battery slot performs a battery exchange service, but it is not limited to this. In this embodiment, it is assumed that the battery storage device 110 is connected to an external power source (for example, commercial power) to charge the first battery 113.

First, in step S410, the power detection unit continuously detects the power supply status of the external power supply of the corresponding battery storage device. When the power supply state of the corresponding battery storage device becomes a power supply state, in step S420, stop outputting power to the battery storage device through the at least one battery and output power from the battery storage device to the at least one battery.

In some embodiments, when it is detected that the first network is offline and the power supply state of the external power supply is unpowered or low power state, the battery storage device can pass through a second network other than the first network For example, a wireless network or a Bluetooth network or a 4G network sends a reminder message to a specific target, where the specific target can be the management or maintenance personnel of the corresponding battery storage device. The above-mentioned reminder message can be a short message to inform the management or maintenance personnel of the corresponding battery storage device that the power supply of the battery storage device has been stopped, and someone needs to be dispatched to deal with it as soon as possible. In this way, the battery storage device can still operate for a period of time after the external power supply is stopped, so that after receiving the reminder message, the management or maintenance personnel have more time to process before the battery storage device completely stops functioning. Increase crisis management capabilities.

In some embodiments, corresponding to the detection that the first network is offline and the power supply state of the external power supply is unpowered or low power, the battery storage device may enter a function-restricted mode. In the mode, the battery storage device is only allowed to perform a specific necessary operation and the battery storage device is prohibited from performing other operations. In some embodiments, the specific necessary operation is a display operation, such as displaying only a prompt that the power is about to run out or providing only necessary display power, and not allowing battery charging or switching off or shutting down the power in other places, thereby Can save unnecessary power consumption.

In some embodiments, the battery storage device may further include a backup power source (for example: an uninterrupted power system (UPS)), when the battery storage device detects that the first network is offline and the corresponding battery storage device is powered When the state is not powered, the battery storage device first supplies power to the battery storage device through a backup power source. Then, the battery storage device continuously detects the power supply state of one of the corresponding backup power sources. When the power supply status of the corresponding backup power supply is no power supply or low power status, through At least one battery outputs power to the battery storage device. That is to say, in this embodiment, when the battery storage device has a built-in backup power supply, the backup power supply will be used for power supply first. Once the power of the backup power supply is almost used up, it can output power to the battery storage through at least one battery Device, which can extend the effective use time of the battery storage device.

In some embodiments, after the battery storage device outputs power through at least one battery, it can continuously detect the connection status with the first network through the network connection unit and when it detects that it is a connection with the first network In the state (that is, when the network connection is restored), a power shortage notification can be sent to a server through the first network. After the server receives the power shortage notification through the first network, it can send a notification to the relevant personnel for troubleshooting or subsequent processing, so as to prevent the battery storage device from being unavailable for a long time due to insufficient power or power interruption. In some embodiments, after the battery storage device outputs power through at least one battery, the battery storage device continuously detects the power supply state of the corresponding battery storage device and when the power supply state of the corresponding battery storage device becomes a power supply state (ie: When power supply is restored), stop outputting power to the battery storage device through at least one battery and output power to at least one battery.

The following is an example for description, but it is understandable that the present invention is not limited thereto. In this embodiment, an external power source (e.g., utility power) supplies the power required by the battery storage device and the battery storage device is connected to a server through a first network, so that all batteries in the slot of the battery storage device Charge it. When a power failure occurs, the external power supply will be stopped or interrupted and the network connection will also be interrupted. The battery storage device will detect that the external power supply status of the corresponding battery storage device is not powered or low and the battery is stored The device and the first network are in an offline state, so according to the remaining battery power of the battery storage device and the power demand of the corresponding battery storage device, the battery is discharged, and sufficient power is output to the battery storage device through one or more batteries. Maintain the normal operation of the battery storage device. At this time, some functions can be restricted according to actual needs to extend the use time of the battery storage device. Later, when the power is restored, the external power supply will be restored and the network will be reconnected. The battery storage device will detect that the external power supply state of the corresponding battery storage device has changed to the power supply state and the battery storage device The first network becomes connected, so the battery storage device stops outputting power through at least one battery. In some embodiments, the battery storage device can recharge these batteries used as emergency power sources.

Therefore, through the battery management system and method of the battery storage device in this case, It can be used to continuously provide the power required for the operation of the battery storage device after the external power supply of the battery storage device is interrupted or stopped, can extend the effective use time of the battery storage device, and provide emergency handling and notification capabilities of the battery storage device in the event of a power failure .

The method of the present invention, or a specific type or part thereof, can exist in the form of code. The code can be contained in physical media, such as floppy disks, CDs, hard disks, or any other machine-readable (such as computer-readable) storage media, or not limited to external forms of computer program products. Among them, When the program code is loaded and executed by a machine, such as a computer, the machine becomes a device for participating in the present invention. The code can also be transmitted through some transmission media, such as wire or cable, optical fiber, or any transmission type. When the code is received, loaded and executed by a machine, such as a computer, the machine becomes used to participate in this Invented device. When implemented in a general-purpose processing unit, the program code combined with the processing unit provides a unique device that operates similar to the application of specific logic circuits.

Although the present invention has been disclosed as above in the preferred embodiment, it is not intended to limit the present invention. Anyone familiar with the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be subject to the scope of the attached patent application.

S310, S320, S330: steps

Claims (8)

A battery management method for an electric vehicle, suitable for a battery storage device, includes the following steps: providing the battery storage device with at least one battery; detecting the connection status with a first network and the power supply status of an external power source, wherein the The external power supply supplies power to the battery storage device; when it is detected that the first network is in an offline state and the power supply state of the external power supply is unpowered or low power state, output power to the battery through the at least one battery Storage device; and corresponding to the detection that the first network is in the offline state and the power supply state of the external power supply is unpowered or low power state, causing the battery storage device to enter a function limited mode, wherein, in the In the function-restricted mode, only the battery storage device is allowed to perform a specific necessary operation and the battery storage device is prohibited from performing other operations. According to the first item of the scope of patent application, the battery management method for electric vehicles further includes the following steps: corresponding to detecting that the first network is in the offline state and the external power supply is in an unpowered or low battery state, Send a reminder message to a specific target through a second network. According to the battery management method for electric vehicles in the first item of the scope of patent application, the specific necessary operation is a display operation. According to item 1 of the scope of patent application, the battery management method for electric vehicles further includes the following steps: providing a backup power source for the battery storage device; When it is detected that the first network is in the offline state and the power supply state of the corresponding battery storage device is unpowered or low power state, supply power to the battery storage device through the backup power source; continuously detect the corresponding backup A power supply state of the power supply; and when the power supply state corresponding to the backup power supply is an unpowered or low power state, output power to the battery storage device through the at least one battery. According to the first item of the scope of patent application, the battery management method for electric vehicles further includes: continuously detecting the connection status with the first network; and when detecting a connection status with the first network, Send a power shortage notification to a server through the first network. According to the first item of the scope of patent application, the battery management method for electric vehicles further includes: continuously detecting the power supply state of the battery storage device; and when the power supply state of the external power supply corresponding to the battery storage device becomes a power supply state When, stop outputting power to the battery storage device through the at least one battery and output power from the battery storage device to the at least one battery. A battery management system for an electric vehicle includes: a battery storage device, which includes: at least one first slot for accommodating and charging at least one first battery; a network connection unit; and a power detection unit; as well as A controller, coupled to the network connection unit, the power detection unit, and the first slot, for detecting the connection status with a first network through the network connection unit and the power The detection unit detects the power supply status of an external power supply, where the external power supply is supplied to the battery storage device, and when it is detected that the first network is in an offline state and the power supply status of the external power supply is unpowered or In the low battery state, output power to the battery storage device through the at least one battery, wherein the controller continuously detects the power supply state of the battery storage device and when the power supply state of the battery storage device becomes a power supply In the state, stop outputting power to the battery storage device through the at least one battery and output power to the at least one battery from the battery storage device. A computer program product is used to be loaded by a machine and execute a battery management method of an electric vehicle for managing a plurality of first batteries of a battery storage device. The computer program product includes: a first program code, To receive and detect the connection status with a first network and the power supply status of an external power supply, wherein the external power supply is supplied to the battery storage device; and a second code for detecting the connection with the first network When a network is in an offline state and the power supply state of the external power source is no power supply or low power state, power is output to the battery storage device through at least one of the first batteries.

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