A pluggable battery management system, method and storage medium

Abstract

The present application proposes a pluggable battery management system, method and storage medium, wherein the battery management system includes an energy management system and a plurality of pluggable battery modules. The energy management system can connect a plurality of pluggable battery modules, and the pluggable battery module and the energy management system are connected by only one signal line and two communication lines, one end of the signal line is connected to the corresponding output pin and IN / PWM signal pin in the energy management system, and the other end is connected to the corresponding pluggable battery module; one end of the two communication lines is connected to the two first communication pins in the energy management system, and the other end is connected to the corresponding pluggable battery module. The pluggable battery management system proposed in the present application can realize the three functions of PACK in-place detection, PWM numbering, and hot plug without ignition by connecting the energy management system and the pluggable battery module with only one signal line, which greatly reduces the cost and improves the overall convenience and safety of the system.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage batteries, and in particular to a plug-in type battery management system, method and storage medium. Background Art

[0002] In the lithium battery powered system, there are products that require large capacity but require the PACK to be flexible to increase or decrease, so that they can be plugged in for power and removed for charging at any time. For example, lawn mowers, golf carts, electric motorcycles, new energy forklifts, etc. require a larger battery capacity, but for ease of operation, a plug-in battery expansion method is adopted. Its feature is that a group of PACK slot arrays are arranged on the vehicle body, allowing users to plug in a certain number of battery packs according to their needs. This slot array is managed by an EMS (energy management system) module, which is responsible for the battery insertion and removal management and charging and discharging control.

[0003] Similar products on the market generally have two connection sockets for power transmission and communication. Their communication lines include external auxiliary power, battery ID identification, battery lock signal, signal ground, CAN communication line, etc., which are often more than 10 pins. There are many electrical pins that need to be connected. It is very difficult to achieve electrical connection during mechanical plug-in, so the plug-in is limited to mechanical fixation and cannot be truly plug-in. After the battery is installed, a communication connector needs to be manually plugged into the battery, and in addition to connecting P+ / P-, there are at least 2 sets of connectors that need to be manually plugged in. Disassembly and assembly are inconvenient, and errors are easy to occur due to the inconvenience, or the interface is easily damaged due to too many plug-in and unplug connections, making routine maintenance difficult. Summary of the invention

[0004] To solve the above technical problems, the present application provides a pluggable battery management system, method and storage medium, which can realize the activation, numbering and hot plugging of pluggable battery modules with only one signal line and two communication lines.

[0005] In a first aspect, the present application provides a pluggable battery management system, which includes: an energy management system and a plurality of pluggable battery modules.

[0006] The energy management system includes a processor, and the processor includes a plurality of OUT pins, a plurality of IN / PWM pins and two first communication pins.

[0007] Each plug-in battery module is connected to the energy management system by a signal line and two communication lines. One end of the signal line is connected to the corresponding output pin and IN / PWM signal pin in the energy management system, and the other end is connected to the corresponding plug-in battery module.

[0008] One end of the two communication lines is connected to two first communication pins in the energy management system, and the other end is connected to the corresponding plug-in battery module.

[0009] The solution proposed in this application only relies on one signal line to connect the energy management system and the plug-in battery module, so as to realize the three functions of PACK in-place detection, PWM numbering, and hot plugging without ignition, which greatly reduces the cost and improves the overall convenience and safety of the system.

[0010] Furthermore, the pluggable battery module includes: an ON / ID pin, an ID_PWM pin, a WAK_UP pin, a battery positive pin, a battery negative pin and two second communication pins.

[0011] The ON / ID pin is connected to the signal line.

[0012] The two second communication pins are respectively connected to a communication line.

[0013] The communication interface of this case only needs 3 pins, 1 pin is the ON / ID pin, which has a composite function and can detect and activate the pluggable battery module. The other 2 pins are the second communication pins. Through this invention design, the number of pins in the pluggable battery module can be reduced, which is convenient for realizing electrical connection simultaneously during mechanical insertion.

[0014] The ID_PWM pin is used to receive a PWM numbering signal sent by the energy management system according to preset parameters, and to number the plug-in battery module according to the PWM numbering signal.

[0015] The positive battery pin and the negative battery pin are the power lines of the plug-in battery module.

[0016] Furthermore, the pluggable battery module includes: an undervoltage protection circuit and a current limiting circuit, and the undervoltage protection circuit and the current limiting circuit are connected to the energy management system through the battery positive pin.

[0017] When the energy management system is not connected to any pluggable battery module, it is in a power-off state. After the first pluggable battery module is plugged into the energy management system, the pluggable battery module provides a weak current through the undervoltage protection and current limiting circuit to start the power supply of the energy management system control board.

[0018] The undervoltage protection circuit can cut off the external supply when the plug-in battery module is low on power, protecting the plug-in battery module from being discharged. The current limiting module limits the external pre-output current to the mA level, and automatically cuts off the output when the output current is greater than the preset value.

[0019] Furthermore, a connector is provided between the energy management system and the pluggable battery module for physical connection.

[0020] The communication harness with 3 small pins and the power wires with 2 large pins are integrated into one connector.

[0021] Furthermore, the ON / ID pin is shorter than the battery positive pin and the battery negative pin.

[0022] Since the ON / ID pin is shorter than the positive and negative pins of the battery, when the plug-in battery module is forcibly unplugged, the ON / ID signal change can be detected first and an interruption can be generated. The plug-in battery module can quickly shut down the battery power channel to avoid sparking.

[0023] In a second aspect, the present application proposes a battery management method based on the pluggable battery management system described in the first aspect, the battery management method comprising:

[0024] S1: Detect whether the pluggable battery module is connected to the battery. If so, proceed to step S2; if not, proceed to step S3.

[0025] S2: Number the pluggable battery modules according to preset parameters and proceed to step S3.

[0026] S3: The management work of the current plug-in battery module is completed, and the management work of the next plug-in battery module is entered, and step S1 is entered again.

[0027] This battery management method improves management efficiency, accuracy and flexibility by automatically detecting and numbering battery modules, and reduces operating errors and maintenance costs. Numbering the inserted battery modules can ensure the independent tracking and management of each module, avoid confusion, and improve data accuracy. The plug-in battery module can encode and display the corresponding SOC, voltage, current, temperature and other information in the energy management system.

[0028] Since the method is based on the battery management system described in the first aspect, the method can also realize that any pluggable battery module can be plugged in or out at any time without affecting the overall power consumption of the system.

[0029] Furthermore, the step S1 includes:

[0030] Whether the pluggable battery module is connected to the battery is detected through the IN / PWM pin corresponding to the pluggable battery module.

[0031] If the pluggable battery module is not connected to a battery, the OUT pin corresponding to the pluggable battery module is at a high level.

[0032] If the pluggable battery module is connected to a battery, the OUT pin corresponding to the pluggable battery module is at a low level.

[0033] By setting the OUT pin to a high level and detecting the high and low levels of IN / PWM to poll the plug-in battery module, the detection is connected. When the plug-in battery module is detected to be connected, the corresponding OUT pin becomes a low level.

[0034] Furthermore, the step S2 includes:

[0035] The energy management system sends out a PWM signal according to preset parameters to number the pluggable battery modules.

[0036] The ID_PWM pin is used to receive a PWM numbering signal sent by the energy management system according to preset parameters, and to number the plug-in battery module according to the PWM numbering signal.

[0037] Furthermore, the step S1 further includes:

[0038] When the first plug-in battery module is connected to the battery, the undervoltage protection circuit and the current limiting circuit provide power supply to the energy management system.

[0039] When the energy management system is not connected to any pluggable battery module, it is in a power-off state. After the first pluggable battery module is plugged into the energy management system, the pluggable battery module provides a weak current through the undervoltage protection and current limiting circuit to start the power supply of the energy management system control board.

[0040] The undervoltage protection circuit can cut off the external supply when the plug-in battery module is low on power, protecting the plug-in battery module from being discharged. The current limiting module limits the external pre-output current to the mA level, and automatically cuts off the output when the output current is greater than the preset value.

[0041] In the third aspect, based on the same inventive concept, the present application also proposes a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a control processor, the battery management method described in the second aspect is implemented.

[0042] In the computer-readable storage medium, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk SolidState Disk (SSD)), etc.

[0043] In summary, the present application proposes a pluggable battery management system, method and storage medium, wherein the battery management system includes an energy management system and a plurality of pluggable battery modules. The energy management system can be connected to a plurality of pluggable battery modules, and the pluggable battery module is connected to the energy management system only by a signal line and two communication lines, one end of the signal line is connected to the corresponding output pin and IN / PWM signal pin in the energy management system, and the other end is connected to the corresponding pluggable battery module; one end of the two communication lines is connected to the two first communication pins in the energy management system, and the other end is connected to the corresponding pluggable battery module.

[0044] Compared with the prior art, this application has at least the following beneficial effects:

[0045] A pluggable battery management system proposed in this application only relies on one signal line to connect the energy management system and the pluggable battery module, thereby realizing three functions: PACK in-place detection, PWM numbering, and hot plug without ignition, which greatly reduces the cost and improves the overall convenience and safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of a pluggable battery management system shown in an embodiment of the present application.

[0047] Figure 2It is a circuit structure diagram of a pluggable battery module shown in an embodiment of the present application.

[0048] Figure 3 It is a schematic diagram of an undervoltage protection circuit and a current limiting circuit shown in an embodiment of the present application.

[0049] Figure 4 It is a flow chart of the plug-in type battery management method shown in the embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] Embodiment 1:

[0052] As attached Figure 1 As shown, the present application provides a pluggable battery management system, which includes: an energy management system (EMS) and a plurality of pluggable battery modules.

[0053] The energy management system includes a processor, and the processor includes a plurality of OUT pins, a plurality of IN / PWM pins and two first communication pins.

[0054] Each plug-in battery module is connected to the energy management system by a signal line and two communication lines. One end of the signal line is connected to the corresponding output pin and IN / PWM signal pin in the energy management system, and the other end is connected to the corresponding plug-in battery module.

[0055] One end of the two communication lines is connected to two first communication pins in the energy management system, and the other end is connected to the corresponding plug-in battery module.

[0056] The solution proposed in this application only relies on one signal line to connect the energy management system and the plug-in battery module, so as to realize the three functions of PACK in-place detection, PWM numbering, and hot plugging without ignition, which greatly reduces the cost and improves the overall convenience and safety of the system.

[0057] In an embodiment of the present invention, optionally, the energy management system includes a processor, a DCDC (direct current-to-direct current converter) and a power-on switch. The DCDC (direct current-to-direct current converter) is used to convert the voltage in the energy management system, and the power-on switch is used to turn on / off the energy management system.

[0058] In the embodiment of the present invention, optionally, the two communication interfaces are CAN_L and CAN_H respectively.

[0059] In the embodiment of the present invention, optionally, as shown in the attached Figure 2 As shown, the plug-in battery module includes: an ON / ID pin, an ID_PWM pin, a WAK_UP pin, a battery positive pin, a battery negative pin and two second communication pins.

[0060] The ON / ID pin is connected to the signal line.

[0061] The two second communication pins are respectively connected to a communication line.

[0062] The communication interface of this case only needs 3 pins, 1 pin is the ON / ID pin, which has a composite function and can detect and activate the pluggable battery module. The other 2 pins are the second communication pins. Through this invention design, the number of pins in the pluggable battery module can be reduced, which is convenient for realizing electrical connection simultaneously during mechanical insertion.

[0063] The ID_PWM pin is used to receive a PWM numbering signal sent by the energy management system according to preset parameters, and to number the plug-in battery module according to the PWM numbering signal.

[0064] PWM signal (Pulse Width Modulation signal) is a signal that controls electricity by adjusting the width of the pulse. It is commonly used to adjust motor speed, dim LED lights, and produce sound in audio applications, etc.

[0065] The duty cycle of a PWM signal refers to the ratio of the high level duration to the total cycle time, usually expressed as a percentage. The higher the duty cycle, the greater the output power.

[0066] The frequency of a PWM signal defines the number of repetitions in one cycle. The higher the frequency, the faster the change.

[0067] The positive battery pin and the negative battery pin are the power lines of the plug-in battery module.

[0068] The plug-in battery module includes an optocoupler, pin 1 of the optocoupler is connected to the ON / ID pin, pin 2 of the optocoupler is connected to the negative electrode pin of the battery, pin 3 of the optocoupler is grounded, and pin 4 of the optocoupler is connected to the ID_PWM pin and the WAK_UP pin.

[0069] An optocoupler (optocoupler or opto-isolator) is an electronic component used to provide electrical isolation between circuits while transmitting signals. It usually consists of a light-emitting diode (LED) and a light-sensitive element (such as a phototransistor, photodiode, or photo MOSFET).

[0070] In an embodiment of the present invention, optionally, the pluggable battery module includes: an undervoltage protection circuit and a current limiting circuit, and the undervoltage protection circuit and the current limiting circuit are connected to the energy management system through the battery positive pin.

[0071] When the energy management system is not connected to any pluggable battery module, it is in a power-off state. After the first pluggable battery module is plugged into the energy management system, the pluggable battery module provides a weak current through the undervoltage protection and current limiting circuit to start the power supply of the energy management system control board.

[0072] The undervoltage protection circuit can cut off the external supply when the plug-in battery module is low on power, protecting the plug-in battery module from being discharged. The current limiting module limits the external pre-output current to the mA level, and automatically cuts off the output when the output current is greater than the preset value.

[0073] In the embodiment of the present invention, optionally, the pluggable battery module is used to connect to a battery pack (PACK).

[0074] As attached Figure 3 As shown, DM is the network between the main charging MOS tube and the main discharging MOS tube of the PACK. The charging MOS can be used to block the charging current to prevent mutual charging between PACKs. The undervoltage protection module can cut off the external supply when the PACK power is low to protect the PACK from being discharged. The current limiting module limits the external pre-output current to the mA level, and automatically cuts off the output when the output current is greater than the preset value. At the same time, when the EMS is not connected to any PACK, it is in a power-free state. After a PACK is plugged into the EMS, the P+ main charging and discharging MOS is not turned on, and the DM (between the main charging and discharging MOS) provides a weak current through the undervoltage protection and current limiting circuit to start the EMS control board power supply and provide the VDD required by the EMS MCU (3V3 in this case).

[0075] In an embodiment of the present invention, optionally, a connector is provided between the energy management system and the pluggable battery module for physical connection.

[0076] The communication harness with 3 small pins and the power wires with 2 large pins are integrated into one connector.

[0077] In the embodiment of the present invention, optionally, the ON / ID pin is shorter than the battery positive pin and the battery negative pin.

[0078] Since the ON / ID pin is shorter than the positive and negative pins of the battery, when the PACK is forcibly unplugged, the ON / ID signal change can be detected first and an interruption can be generated. The plug-in battery module can quickly shut down the battery power channel to avoid sparking.

[0079] Embodiment 2:

[0080] As attached Figure 4 As shown, the present application proposes a battery management method based on the pluggable battery management system described in the first aspect, and the battery management method includes:

[0081] S1: Detect whether the pluggable battery module is connected to the battery. If so, proceed to step S2; if not, proceed to step S3.

[0082] S2: Number the pluggable battery modules according to preset parameters and proceed to step S3.

[0083] S3: The management work of the current plug-in battery module is completed, and the management work of the next plug-in battery module is entered, and step S1 is entered again.

[0084] This battery management method improves management efficiency, accuracy and flexibility by automatically detecting and numbering battery modules, and reduces operating errors and maintenance costs. Numbering the inserted battery modules can ensure the independent tracking and management of each module, avoid confusion, and improve data accuracy. The plug-in battery module can encode and display the corresponding SOC, voltage, current, temperature and other information in the energy management system.

[0085] Since the battery management method is based on the battery management system described in the first aspect, the method can also realize that any pluggable battery module can be plugged in or out at any time without affecting the overall power consumption of the system.

[0086] In the embodiment of the present invention, optionally, step S1 includes:

[0087] Whether the pluggable battery module is connected to the battery is detected through the IN / PWM pin corresponding to the pluggable battery module.

[0088] If the pluggable battery module is not connected to a battery, the OUT pin corresponding to the pluggable battery module is at a high level.

[0089] If the pluggable battery module is connected to a battery, the OUT pin corresponding to the pluggable battery module is at a low level.

[0090] By setting the OUT pin to a high level and detecting the high and low levels of IN / PWM to poll the plug-in battery module, the detection is connected. When the plug-in battery module is detected to be connected, the corresponding OUT pin becomes a low level.

[0091] In the embodiment of the present invention, optionally, step S2 includes:

[0092] The energy management system sends out a PWM signal according to preset parameters to number the pluggable battery modules.

[0093] The ID_PWM pin is used to receive a PWM numbering signal sent by the energy management system according to preset parameters, and to number the plug-in battery module according to the PWM numbering signal.

[0094] PWM signal (Pulse Width Modulation signal) is a signal that controls electricity by adjusting the width of the pulse. It is commonly used to adjust motor speed, dim LED lights, and produce sound in audio applications, etc.

[0095] The duty cycle of a PWM signal refers to the ratio of the high level duration to the total cycle time, usually expressed as a percentage. The higher the duty cycle, the greater the output power.

[0096] The frequency of a PWM signal defines the number of repetitions in one cycle. The higher the frequency, the faster the change.

[0097] In the embodiment of the present invention, optionally, the step S1 further includes:

[0098] When the first plug-in battery module is connected, the undervoltage protection circuit and the current limiting circuit provide power supply to the energy management system.

[0099] When the energy management system is not connected to any pluggable battery module, it is in a power-off state. After the first pluggable battery module is plugged into the energy management system, the pluggable battery module provides a weak current through the undervoltage protection and current limiting circuit to start the power supply of the energy management system control board.

[0100] The undervoltage protection circuit can cut off the external supply when the plug-in battery module is low on power, protecting the plug-in battery module from being discharged. The current limiting module limits the external pre-output current to the mA level, and automatically cuts off the output when the output current is greater than the preset value.

[0101] As a preferred embodiment, the battery management method is applicable to an energy management system (hereinafter referred to as EMS) and a pluggable battery module that can be inserted into a battery pack (hereinafter referred to as PACK). The EMS and the pluggable battery module establish a communication connection through CAN. The specific process is as follows:

[0102] When EMS is not connected to any PACK, it is in a power-off state. After the first PACK is plugged into the EMS, the P+ main charge and discharge MOS are not turned on, and the DM (the network between the main charge and discharge MOS tubes of the PACK) provides a weak current through the undervoltage protection and current limiting circuit to start the EMS control board power supply and provide the VDD (3V3 in this case) required by the MCU inside the EMS.

[0103] After the EMS MCU is started, the OUT pin is set to a high level, and the high and low levels of the IN / PWM pin are used to poll the PACK slot to detect whether there is a battery in place. When a battery is detected in a certain PACK slot, the OUT pin of the corresponding plug-in battery module becomes a low level, and an activation or wake-up high level is first sent on the IN / PWM pin of the corresponding plug-in battery module. After the PACK is activated and awakened, a CAN signal is blindly sent, indicating that the PACK is ready. The MCU inside the EMS then sends a PWM signal according to the preset parameters to number the battery. After the PACK receives the PWM signal, it translates and saves its own number in the MCU as an address mark for CAN communication.

[0104] After CAN communication is established, the system enters the working state, and the EMS decides whether to open or close the main charge or discharge MOS of the PACK according to the charge and discharge strategy. When the second or subsequent PACK is inserted, the MCU inside the EMS repeatedly polls and sends out number information, so that the newly connected battery completes self-coding. Until all batteries are connected.

[0105] EMS has power switch control for each PACK. The connection or disconnection of a battery is controlled by the MCU inside the device EMS according to the power consumption, battery status and overall strategy. It can continuously charge and discharge and balance the number of cycles of each battery to avoid mutual charging of batteries. This connection method between PACK and EMS solves the following working scenarios:

[0106] When the first PACK is connected to a device, the EMS starts the MCU under P+ pre-output and activates or wakes up the PACK through ON / ID;

[0107] When the second and subsequent PACKs are connected to the device, if it is in the off state, the PACK is activated by ON / ID;

[0108] Any PACK can be plugged in or out at any time without affecting the power consumption of the EMS (unless all PACKs are unplugged, or the PACKs in place are over-discharged and shut down).

[0109] PACK can encode and display the corresponding SOC, voltage, current, temperature and other information on the EMS side.

[0110] The solution proposed in this application eliminates the PACK in-position mechanical switch and mechanical lock (to prevent the PACK from being pulled out by mistake) of the battery compartment. In order to prevent the PACK from being pulled out by mistake and causing sparks when working at high current, the IN / PWM pin is set to send a high level after the PACK numbering is completed. This high level is input to the interrupt pin of the PACK MCU through the connector; the ON / ID pin on the PACK connector is set to be shorter than the P+ / P- pin. When the PACK is forcibly pulled out, the ON / ID signal change can be detected first and an interrupt can be generated in the MCU. The MCU inside the PACK can quickly shut down the battery power channel to avoid sparks.

[0111] The specific process of detection and numbering on the EMS side is as follows:

[0112] EMS internal MCU RESET;

[0113] The OUT pin is set to high level;

[0114] Determine whether the IN / PWM pin is at a high level. If so, return to the previous step; if not, proceed to the next step;

[0115] The OUT pin is set to low level, while the IN / PWM pin sends out a numbered PWM signal;

[0116] EMS internal MCU SUCC;

[0117] This poll is over.

[0118] When a subsequent PACK is inserted, the EMS internal MCU repeatedly polls and sends out numbering information, allowing the newly connected battery to complete self-coding until all batteries are connected.

[0119] The PACK end is in the process of access and numbering. The specific process is as follows:

[0120] PACK internal MCU RESET;

[0121] Determine whether the ID / PWM pin is at a low level. If so, proceed to the next step; if not, end;

[0122] The ID / PWM pin receives the numbered PWM signal from the IN / PWM pin and calculates the number;

[0123] CAN communication is established;

[0124] This PACK certification is complete.

[0125] Embodiment three:

[0126] Based on the same inventive concept, the present application also proposes a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a control processor, the battery management method as described in the second aspect is implemented.

[0127] In the computer-readable storage medium, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk SolidState Disk (SSD)), etc.

[0128] In summary, the present application proposes a pluggable battery management system, method and storage medium, wherein the battery management system includes an energy management system and a plurality of pluggable battery modules. The energy management system can be connected to a plurality of pluggable battery modules, and the pluggable battery module is connected to the energy management system only by a signal line and two communication lines, one end of the signal line is connected to the corresponding output pin and IN / PWM signal pin in the energy management system, and the other end is connected to the corresponding pluggable battery module; one end of the two communication lines is connected to the two first communication pins in the energy management system, and the other end is connected to the corresponding pluggable battery module.

[0129] A pluggable battery management system proposed in this application only relies on one signal line to connect the energy management system and the pluggable battery module, thereby realizing three functions: PACK in-place detection, PWM numbering, and hot plug without ignition, which greatly reduces the cost and improves the overall convenience and safety of the system.

[0130] In several embodiments provided in the present application, it is understood that each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved.

[0131] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for enabling an electronic device to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0132] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A plug-in battery management system, characterized in that: The battery management system comprises: an energy management system and a plurality of pluggable battery modules; Wherein, the energy management system comprises a processor, and the processor comprises a plurality of OUT pins, a plurality of IN / PWM pins and two first communication pins; A signal line and two communication lines are provided between each pluggable battery module and the energy management system for connection, one end of the signal line is connected to the corresponding output pin and IN / PWM signal pin in the energy management system, and the other end is connected to the corresponding pluggable battery module; One end of the two communication lines is connected to two first communication pins in the energy management system, and the other end is connected to the corresponding plug-in battery module.

2. The battery management system according to claim 1, characterized in that: The plug-in battery module includes: an ON / ID pin, an ID_PWM pin, a WAK_UP pin, a battery positive pin, a battery negative pin and two second communication pins; The ON / ID pin is connected to the signal line; The two second communication pins are respectively connected to a communication line.

3. The battery management system according to claim 2, characterized in that: The plug-in battery module comprises: an undervoltage protection circuit and a current limiting circuit, and the undervoltage protection circuit and the current limiting circuit are connected to the energy management system through the battery positive electrode pin.

4. The battery management system according to claim 1, characterized in that: A connector is provided between the energy management system and the pluggable battery module for physical connection.

5. The battery management system according to claim 2, characterized in that: The ON / ID pin is shorter than the battery positive pin and the battery negative pin.

6. A battery management method based on the pluggable battery management system according to any one of claims 1 to 5, the battery management method comprising: S1: Detect whether the pluggable battery module is connected to the battery. If so, proceed to step S2; if not, proceed to step S3; S2: numbering the pluggable battery modules according to preset parameters, and proceeding to step S3; S3: The management work of the current plug-in battery module is completed, and the management work of the next plug-in battery module is entered, and step S1 is entered again.

7. The battery management method according to claim 6, characterized in that: The step S1 comprises: Detecting whether the pluggable battery module is connected to a battery through the IN / PWM pin corresponding to the pluggable battery module; If the pluggable battery module is not connected to a battery, the OUT pin corresponding to the pluggable battery module is at a high level; If the pluggable battery module is connected to a battery, the OUT pin corresponding to the pluggable battery module is at a low level.

8. The battery management method according to claim 6, characterized in that: The step S2 comprises: The energy management system sends out a PWM signal according to preset parameters to number the pluggable battery modules.

9. The battery management method according to claim 6, characterized in that: The step S1 further comprises: When the first plug-in battery module is connected to the battery, the undervoltage protection circuit and the current limiting circuit provide power supply to the energy management system.

10. A computer-readable storage medium storing computer-executable instructions, characterized in that: When the computer executable instructions are executed by the control processor, the battery management method as described in any one of claims 6 to 9 is implemented.

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