A lithium battery BMS program upgrade component

Abstract

The utility model discloses a lithium battery BMS program upgrade component, which is applied to a lithium battery electric bicycle, including a battery pack, a connecting line and a diagnostic box. The battery pack is arranged in the lithium battery electric bicycle, including a battery and a battery management module. The battery management module is electrically connected to the battery, including a control chip IC1 and a first communication interface. The diagnostic box includes a control chip IC2, a second communication interface and a storage module. The second communication interface is connected to the first communication interface line via a connecting line. The storage module is used to store BMS software program files that need to be upgraded. The control chip IC2 is used to read the BMS application software program from the storage module, and to exchange data with the battery pack through the second communication interface and the first communication interface. The control chip IC1 is used to receive and read the BMS software program file to complete the upgrade, which solves the pain point that the test personnel must download the lithium battery program upgrade through a computer in the current electric bicycle without remote upgrade, and improves the convenience of the operator.

Description

Technical Field

[0001] The utility model relates to the technical field of battery management, in particular to a lithium battery BMS program upgrade component. Background Art

[0002] In the existing technology, the current maintenance volume of the electric bicycle market is about 300 million, and lithium battery electric bicycles account for about 8% to 10%. In the actual use of the lithium battery protection board BMS, the BMS software needs to be upgraded due to the iterative development of functions. There are currently two ways to upgrade the BMS software: the first is to remotely upgrade the BMS program through the whole vehicle or charging cabinet. This function is more common in commercial shared electric motorcycles, and only a few car manufacturers on the civilian side support remote upgrades of whole vehicles. The other is for inspection personnel to connect the battery to the computer for offline upgrades, but the requirements for operators are relatively high, and the upgrade of the BMS software is very inconvenient. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a method to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is a lithium battery BMS program upgrade component, which is applied to lithium battery electric bicycles, including a battery pack, a connecting line and a diagnostic box, wherein:

[0005] The battery pack is arranged in the lithium battery electric bicycle, and includes a battery and a battery management module. The battery management module is electrically connected to the battery, and includes a control chip IC1 and a first communication interface.

[0006] The diagnostic box includes a control chip IC2, a second communication interface and a storage module. The second communication interface is connected to the first communication interface line through the connecting line. The storage module is used to store the BMS software program files that need to be upgraded.

[0007] The control chip IC2 is used to read the BMS application software program from the storage module and to exchange data with the battery pack through the second communication interface and the first communication interface. The control chip IC1 is used to receive and read the BMS software program file to complete the upgrade.

[0008] Furthermore, the battery management module further comprises a discharging MOS switch tube and a charging MOS switch tube. The source of the discharging MOS switch tube is connected to the negative terminal of the battery, and the drain is connected to the drain of the charging MOS switch tube.

[0009] Furthermore, the battery management module also includes a detection module. The detection module includes a voltage detection component, a switch control component and a current detection component. The voltage detection component is respectively connected to the positive terminal of the battery and the control chip IC1, and is used to detect and collect voltage information of the battery pack. The switch control component is respectively connected to the gate of the discharge MOS switch tube and the gate of the charge MOS switch tube, and is used to enable the battery pack to switch between the charge state and the discharge state. The current detection component is connected in series between the negative terminal of the battery and the source of the discharge MOS switch tube, and is used to detect and collect current information of the battery pack.

[0010] Furthermore, the diagnostic box also includes a power supply module, a key detection interface and a display module. The key detection interface is used for one-key operation of the program upgrade function. The power supply module is used to supply power to the diagnostic box. The display module is used to indicate the status of program upgrade completion or failure.

[0011] Furthermore, the battery management module also includes a Bluetooth module for connecting to an external mobile phone App to transmit voltage information and current information of the battery pack and read program upgrade commands.

[0012] Furthermore, the battery management module also includes a first discharge detection interface, and the diagnostic box also includes a second discharge detection interface. The first discharge detection interface is connected to the second discharge detection interface circuit via the connecting line for waking up the battery pack.

[0013] Preferably, the voltage of the battery is one of 48V, 60V or 72V.

[0014] Compared with the prior art, the present application has the following beneficial effects: the present application provides a lithium battery BMS program upgrade component, after the diagnostic box is connected to the battery pack signal of the lithium battery electric bicycle, a one-click BMS software upgrade is performed by clicking a button on the button detection interface, and the control chip IC2 copies the BMS software program file from the storage module, and transmits it to the battery pack through the communication interface for corresponding BMS software upgrade. At the same time, the diagnostic box supports connection with the mobile phone App through the Bluetooth module, and the BMS software upgrade is performed after checking the battery information, which solves the pain point that the inspectors must download the lithium battery program upgrade through a computer in the current context of electric bicycles without remote upgrades, thereby improving the convenience of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a circuit internal block diagram of a battery pack of an embodiment of a lithium battery BMS program upgrade component of the utility model;

[0016] Figure 2This is a circuit internal block diagram of a diagnostic box of an embodiment of a lithium battery BMS program upgrade component of the utility model;

[0017] Figure 3 This is a system structure block diagram of an embodiment of a lithium battery BMS program upgrade component of the utility model;

[0018] In the figure:

[0019] Battery-11; detection module-12; control chip IC1-13; first communication interface-14; first discharge detection interface-15; discharge MOS switch tube-16; charge MOS switch tube-17; voltage detection component-12-1; switch control component-12-2; current detection component-12-3; power supply module-21; Bluetooth module-22; storage module-23; control chip IC2-24; second communication interface-25; discharge detection interface-26; button detection interface-27; display module-28. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] refer to Figure 1 to Figure 3 , Figure 1 The circuit internal block diagram of a battery pack of a lithium battery BMS program upgrade component provided by an embodiment of the utility model is shown; Figure 2 The following is a circuit diagram of a diagnostic box for a lithium battery BMS program upgrade component provided by an embodiment of the utility model; Figure 3 A system structure block diagram of a lithium battery BMS program upgrade component provided by an embodiment of the utility model is shown.

[0022] like Figure 1 and Figure 2 As shown, the technical solution provided by this application is a lithium battery BMS program upgrade component, which is applied to lithium battery electric bicycles, including a battery pack, a connecting line and a diagnostic box, wherein:

[0023] The battery pack is arranged in a lithium battery electric bicycle, and includes a battery 11 and a battery 11 management module. The battery 11 management module is electrically connected to the battery, and includes a control chip IC1 (13) and a first communication interface 14.

[0024] The diagnostic box includes a control chip IC2 (24), a second communication interface 25 and a storage module 23. The second communication interface 25 is connected to the first communication interface 14 via a connection line. The storage module 23 is used to store the BMS software program files that need to be upgraded.

[0025] The control chip IC2 (24) is used to read the BMS application software program from the storage module 23, and to exchange data with the battery pack through the second communication interface 25 and the first communication interface 14. The control chip IC1 (13) is used to receive and read the BMS software program file to complete the upgrade.

[0026] The present application provides a lithium battery BMS program upgrade component, wherein a storage module 23 is used to store BMS software program files that need to be upgraded, the diagnostic box communicates with the battery pack via a communication interface, and the control chip IC2 (24) copies the BMS software program files from the storage module 23 and transmits them to the battery pack via the communication interface for data exchange, and can also transmit relevant status information of the battery pack, thereby solving the pain point that the test personnel must download the lithium battery 11 program upgrade through a computer in the current electric bicycle without remote upgrade, thereby improving the convenience of the operator.

[0027] Furthermore, the voltage of the battery 11 is one of 48V, 60V or 72V.

[0028] In some embodiments, reference Figure 1 to Figure 3 The battery 11 management module further includes a discharge MOS switch tube 16 and a charge MOS switch tube 17. The source of the discharge MOS switch tube 16 is connected to the negative terminal of the battery 11, and the drain is connected to the drain of the charge MOS switch tube 17.

[0029] The battery 11 management module also includes a detection module 12. The detection module 12 includes a voltage detection component 12-1, a switch control component 12-2 and a current detection component 12-3. The voltage detection component 12-1 is respectively connected to the positive terminal of the battery 11 and the control chip IC1 (13), and is used to detect and collect voltage information of the battery pack. The switch control component 12-2 is respectively connected to the gate of the discharge MOS switch tube 16 and the gate of the charge MOS switch tube 17, and is used to enable the battery pack to switch between the charge state and the discharge state. The current detection component 12-3 is connected in series between the negative terminal of the battery 11 and the source of the discharge MOS switch tube 16, and is used to detect and collect current information of the battery pack.

[0030] In some embodiments, reference Figure 1 to Figure 3 The diagnostic box also includes a power supply module 21, a key detection interface and a display module. The key detection interface is used for one-key operation of the program upgrade function. The power supply module 21 is used to supply power to the diagnostic box. The display module is used to indicate the status of program upgrade completion or failure.

[0031] Exemplarily, the power supply module 21 supplies power to each module in the diagnostic box. The display module in this solution is an LED lamp assembly, and the permanent state of the LED lamp assembly is off. When the program upgrade is completed, the LED lamp assembly lights up, and when the program upgrade fails, the LED lamp assembly remains off. A button is provided at the button detection interface. Clicking the button starts the diagnostic box, and the control chip IC2 (24) copies the BMS software program file from the storage module 23 and transmits it to the battery pack through the communication interface to perform the corresponding BMS software upgrade.

[0032] In some embodiments, reference Figure 1 to Figure 3 The battery 11 management module also includes a Bluetooth module 22, which is used to connect to an external mobile phone App to transmit voltage information and current information of the battery pack and read program upgrade commands.

[0033] The battery 11 management module further includes a first discharge detection interface 15, and the diagnosis box further includes a second discharge detection interface 26. The first discharge detection interface 15 is connected to the second discharge detection interface 26 via a connecting line for waking up the battery pack.

[0034] The diagnostic box is connected to the battery pack via two communication interfaces and two discharge detection interfaces. After the battery pack and the diagnostic box establish a communication connection, the BMS software can be upgraded in two ways.

[0035] The first method is that after the diagnosis box is successfully connected to the battery pack, the button at the button detection interface is clicked, and the control chip IC2 (24) reads the BMS application software program from the storage module 23 and exchanges data with the battery pack through the communication interface. When the data interaction is completed, the control chip IC2 (24) controls the display module to light up, indicating that the program upgrade is completed.

[0036] The second method is to establish a connection between the mobile phone and the Bluetooth module 22 of the diagnostic box, and then the diagnostic box communicates with the battery pack to transmit the voltage information and current information of the battery pack to the mobile phone, and present it on the software operation interface of the mobile phone App. After reading the relevant information of the battery pack, click the program upgrade button, the control chip IC2 (24) reads the program from the storage module 23, and exchanges data with the battery pack to download the program. After the program is downloaded successfully, the display module lights up, indicating that the program upgrade is complete.

[0037] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A lithium battery BMS program upgrade component, applied to lithium battery electric bicycles, characterized in that: Includes battery pack, connecting cables and diagnostic box, including: The battery pack is arranged in the lithium battery electric bicycle, and includes a battery and a battery management module; the battery management module is electrically connected to the battery, and includes a control chip IC1 and a first communication interface; The diagnostic box includes a control chip IC2, a second communication interface and a storage module; the second communication interface is connected to the first communication interface line through the connecting line; the storage module is used to store the BMS software program files that need to be upgraded; The control chip IC2 is used to read the BMS application software program from the storage module and to exchange data with the battery pack through the second communication interface and the first communication interface; the control chip IC1 is used to receive and read the BMS software program file to complete the upgrade.

2. The lithium battery BMS program upgrade component according to claim 1, characterized in that: The battery management module also includes a discharge MOS switch tube and a charge MOS switch tube; the source of the discharge MOS switch tube is connected to the negative terminal of the battery, and the drain is connected to the drain of the charge MOS switch tube.

3. The lithium battery BMS program upgrade component according to claim 2, characterized in that: The battery management module also includes a detection module; the detection module includes a voltage detection component, a switch control component and a current detection component; the voltage detection component is respectively connected to the positive terminal of the battery and the control chip IC1, and is used to detect and collect voltage information of the battery pack; the switch control component is respectively connected to the gate of the discharge MOS switch tube and the gate of the charge MOS switch tube, and is used to enable the battery pack to switch between the charging state and the discharge state; the current detection component is connected in series between the negative terminal of the battery and the source of the discharge MOS switch tube, and is used to detect and collect current information of the battery pack.

4. The lithium battery BMS program upgrade component according to claim 1, characterized in that: The diagnostic box also includes a power supply module, a button detection interface and a display module; the button detection interface is used for one-button operation of the program upgrade function; the power supply module is used to power the diagnostic box; the display module is used to indicate the status of program upgrade completion or failure.

5. The lithium battery BMS program upgrade component according to claim 1, characterized in that: The battery management module also includes a Bluetooth module for connecting to an external mobile phone App to transmit voltage information and current information of the battery pack and read program upgrade commands.

6. The lithium battery BMS program upgrade component according to claim 1, characterized in that: The battery management module further includes a first discharge detection interface, and the diagnosis box further includes a second discharge detection interface. The first discharge detection interface is connected to the second discharge detection interface circuit via the connection line for waking up the battery pack.

7. The lithium battery BMS program upgrade component according to claim 1, characterized in that: The voltage of the battery is one of 48V, 60V or 72V.

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