A lithium battery protection plate activation device and method

Abstract

The application provides a lithium battery protection plate activation device and method in the technical field of lithium battery formation and capacity grading, which comprises a host computer, an Ethernet communication module, a main control chip and a plurality of optocoupler on-off modules; one end of the Ethernet communication module is connected with the host computer, and the other end is connected with the main control chip; the main control chip is connected with each optocoupler on-off module; the Ethernet communication module comprises an Ethernet chip U30, a resistor R16, a resistor R129, a capacitor C10, a capacitor C165, a capacitor C166, a capacitor C167, a capacitor C173, a capacitor C174 and a crystal oscillator Y4. The application has the advantages that the activation efficiency of the lithium battery protection plate is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery formation and grading technology, and particularly relates to a lithium battery protection plate activation device and method. BACKGROUND

[0002] The dust collector, the sweeping robot, the electric scooter and the like on the market are all equipped with lithium batteries, and in order to ensure the safety of the products, the lithium batteries are all provided with protection plates. The B+ interface and the B- interface on the protection plate are used to connect the lithium battery, and the P+ interface and the P- interface are used to output voltage. Under normal circumstances, the MOS tube on the protection plate is in an off state, and the P+ interface and the P- interface do not output voltage. A wire needs to be used to short the B- interface and the P- interface, so that the P+ interface and the P- interface output voltage.

[0003] After the lithium battery is produced, the lithium battery needs to be subjected to formation and grading. The formation is to perform initial charging and discharging on the lithium battery to activate the internal chemical substances, and the grading is to perform capacity sorting on the lithium battery. If the lithium battery with the protection plate is subjected to formation and grading, the P+ interface and the P- interface must output voltage, which requires that a wire is used to short the B- interface and the P- interface, that is, the protection plate is activated. However, for the formation and grading of the batch lithium battery, the manual operation is low in efficiency.

[0004] Therefore, how to provide a lithium battery protection plate activation device and method to improve the activation efficiency of the lithium battery protection plate becomes a technical problem to be solved. SUMMARY

[0005] The present application aims to provide a lithium battery protection plate activation device and method to improve the activation efficiency of the lithium battery protection plate.

[0006] In a first aspect, the present application provides a lithium battery protection plate activation device, which comprises a host computer, an Ethernet communication module, a master control chip and a plurality of optocoupler on-off modules.

[0007] One end of the Ethernet communication module is connected with the host computer, and the other end is connected with the master control chip. The master control chip is connected with each optocoupler on-off module.

[0008] The Ethernet communication module comprises an Ethernet chip U30, a resistor R16, a resistor R129, a capacitor C10, a capacitor C165, a capacitor C166, a capacitor C167, a capacitor C173, a capacitor C174 and a crystal oscillator Y4.

[0009] The pin 1 of the Ethernet chip U30 is connected with the resistor R116, the pins 3, 4, 5, 6, 7, 9, 10 are connected with the master control chip, the pin 11 is connected with one end of the resistor R129, and the pin 12 is connected with the other end of the resistor R129;

[0010] The capacitor C10, the capacitor C167 and the capacitor C166 are connected in parallel, one end of which is connected with the pins 13, 14, 15, 16, 19, 20, 21 of the Ethernet chip U30, and the other end of which is connected with one end of the capacitor C165 and the pin 23 of the Ethernet chip U30; the other end of the capacitor C165 is connected with the pin 22 of the Ethernet chip U30;

[0011] One end of the crystal oscillator Y4 is connected with the pin 24 of the Ethernet chip U30 and one end of the capacitor C174, and the other end of the crystal oscillator Y4 is connected with the pin 25 of the Ethernet chip U30 and one end of the capacitor C173; the other end of the capacitor C173 is connected with the other end of the capacitor C174.

[0012] Further, the model of the Ethernet chip U30 is LAN8720A.

[0013] Further, the optical coupling on-off module comprises an optical coupling relay Q1, a resistor R45 and a resistor R46.

[0014] One end of the resistor R45 is connected with the pin 1 of the optical coupling relay Q1, and the other end of the resistor R45 is connected with the pin 2 of the optical coupling relay Q1 and one end of the resistor R46; the other end of the resistor R46 is connected with the master control chip.

[0015] Further, the model of the optical coupling relay Q1 is AA24F.

[0016] Further, the model of the master control chip is STM32F4.

[0017] In a second aspect, the application provides a lithium battery protection board activation method, comprising the following steps:

[0018] In step S1, the host computer obtains an input activation task carrying a channel number through a visual interface.

[0019] In step S2, the host computer converts the activation task into instruction content through a preset instruction format, obtains a current timestamp, performs hash calculation on the instruction content and the timestamp to obtain a hash value, and generates a protection board activation instruction based on the instruction content, the timestamp and the hash value.

[0020] In step S3, the host computer sends the protection board activation instruction to the master control chip through an Ethernet communication module.

[0021] Step S4, after the master control chip verifies the received protection board activation instruction, the channel number carried by the protection board activation instruction is used to synchronously control the corresponding photoelectric coupling on-off module to attract, so as to automatically short the B-interface and P-interface of the protection board.

[0022] Further, the step S4 is specifically:

[0023] The master control chip receives the protection board activation instruction in real time, analyzes the protection board activation instruction to obtain the instruction content, timestamp and hash value, performs integrity verification on the instruction content and timestamp through the hash value, performs time limit verification through the timestamp, and then performs format verification on the instruction content based on the preset instruction format, analyzes the instruction content to obtain the channel number, and synchronously controls the corresponding photoelectric coupling on-off module to attract based on the channel number, so as to automatically short the B-interface and P-interface of the protection board.

[0024] The application has the advantages that:

[0025] 1. By setting the upper computer, the Ethernet communication module, the master control chip and the plurality of photoelectric coupling on-off modules, the upper computer, the Ethernet communication module, the master control chip and the photoelectric coupling on-off module are connected in sequence, the upper computer sends the protection board activation instruction to the master control chip through the Ethernet communication module, the corresponding photoelectric coupling on-off modules are controlled to be turned on and turned off in batches through the master control chip, the lithium battery protection board is activated in batches, and the activation efficiency of the lithium battery protection board is greatly improved.

[0026] 2. The activation task is converted into instruction content by the preset instruction format, the current timestamp is obtained, the hash value is obtained by performing hash calculation on the instruction content and the timestamp, the protection board activation instruction is generated based on the instruction content, the timestamp and the hash value, and is sent to the master control chip, and the integrity verification is performed through the hash value, the time limit verification is performed through the timestamp, and the format verification is performed through the instruction format, so that the illegal protection board activation instruction is avoided, and the safety of the lithium battery protection board activation is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The application will be further described below with reference to the drawings and embodiments.

[0028] Fig. 1 is a circuit principle block diagram of a lithium battery protection board activation device.

[0029] Fig. 2 is a circuit diagram of the Ethernet communication module.

[0030] Fig. 3 is a circuit diagram of the photoelectric coupling on-off module.

[0031] Fig. 4This is a flowchart of a lithium battery protection board activation method according to the present invention. Detailed Implementation

[0032] The technical solution in this application embodiment has the following general idea: the host computer sends a protection board activation command to the main control chip through the Ethernet communication module, and the main control chip controls the corresponding optocoupler switching modules to switch on and off in batches to activate the lithium battery protection boards in batches, replacing the traditional manual operation and thus improving the activation efficiency of the lithium battery protection boards.

[0033] Please refer to Figs. 1 to 4 As shown, a preferred embodiment of the lithium battery protection board activation device of the present invention includes a host computer, an Ethernet communication module, a main control chip, and several optocoupler switching modules.

[0034] One end of the Ethernet communication module is connected to the host computer, and the other end is connected to the main control chip; the main control chip is connected to each optocoupler switching module.

[0035] The Ethernet communication module includes an Ethernet chip U30, a resistor R16, a resistor R129, a capacitor C10, a capacitor C165, a capacitor C166, a capacitor C167, a capacitor C173, a capacitor C174, and a crystal oscillator Y4.

[0036] Pin 1 of the Ethernet chip U30 is connected to resistor R116, pins 3, 4, 5, 6, 7, 9, and 10 are connected to the main control chip, pin 11 is connected to one end of resistor R129, and pin 12 is connected to the other end of resistor R129.

[0037] After capacitors C10, C167, and C166 are connected in parallel, one end is connected to pins 13, 14, 15, 16, 19, 20, and 21 of Ethernet chip U30, and the other end is connected to one end of capacitor C165 and pin 23 of Ethernet chip U30; the other end of capacitor C165 is connected to pin 22 of Ethernet chip U30.

[0038] One end of the crystal oscillator Y4 is connected to pin 24 of the Ethernet chip U30 and one end of the capacitor C174, and the other end is connected to pin 25 of the Ethernet chip U30 and one end of the capacitor C173; the other end of the capacitor C173 is connected to the other end of the capacitor C174.

[0039] The model of the Ethernet chip U30 is LAN8720A. LAN8720A is a low-power 10 / 100M Ethernet chip, which can establish the best connection with the destination host through self-negotiation, supports HP Auto-MD IX (automatic detection of the required cable connection type of the current connection) automatic flip function, and can change the connection to straight or cross connection without changing the network cable. The main control chip is connected with the host chip through the RMII interface, and the host chip realizes the UDP communication by transplanting the LWIP protocol stack.

[0040] The optical coupling on-off module comprises an optical coupling relay Q1, a resistor R45 and a resistor R46.

[0041] One end of the resistor R45 is connected with the pin 1 of the optical coupling relay Q1, and the other end is connected with the pin 2 of the optical coupling relay Q1 and one end of the resistor R46; the other end of the resistor R46 is connected with the main control chip.

[0042] The model of the optical coupling relay Q1 is AA24F, the maximum load voltage is 40V, and the maximum load current is 3.5A.

[0043] The model of the main control chip is STM32F4. STM32F4 is a high-performance microcontroller based on Cortex-M4 core, which adopts 90nm NVM process and ART technology, and internally integrates an Ethernet peripheral. It is actually a medium access control through a DMA controller, which can send and receive data packets through the Ethernet peripheral according to the IEEE 802.3-2002 standard.

[0044] The preferred embodiment of the lithium battery protection board activation method comprises the following steps:

[0045] Step S1, the host computer obtains the input activation task carrying the channel number through the visual interface;

[0046] Step S2, the host computer converts the activation task into instruction content through a preset instruction format, obtains the current timestamp, performs hash calculation on the instruction content and the timestamp to obtain a hash value, and generates a protection board activation instruction based on the instruction content, the timestamp and the hash value;

[0047] Step S3, the host computer sends the protection board activation instruction to the main control chip through the Ethernet communication module;

[0048] Step S4, after the main control chip checks the received protection board activation instruction, the channel number carried by the protection board activation instruction is used to synchronously control the corresponding optical coupling on-off module to be attracted, so as to automatically short the B-interface and the P-interface of the protection board.

[0049] The step S4 is specifically:

[0050] The main control chip receives the protection board activation instruction in real time, analyzes the protection board activation instruction to obtain instruction content, a timestamp and a hash value, performs integrity verification on the instruction content and the timestamp through the hash value, performs time limit verification through the timestamp, performs format verification on the instruction content based on a preset instruction format, analyzes the instruction content to obtain a channel number, and synchronously controls the corresponding optocoupler on-off module to be attracted based on the channel number, so as to automatically short-circuit the B-interface and the P-interface of the protection board.

[0051] In summary, the application has the following advantages:

[0052] 1. By setting the upper computer, the Ethernet communication module, the main control chip and the plurality of optocoupler on-off modules, the upper computer, the Ethernet communication module, the main control chip and the optocoupler on-off modules are connected in sequence, the upper computer sends the protection board activation instruction to the main control chip through the Ethernet communication module, the corresponding optocoupler on-off modules are controlled to be turned on and turned off in batches through the main control chip, the lithium battery protection board is activated in batches, and the activation efficiency of the lithium battery protection board is greatly improved.

[0053] 2. The activation task is converted into instruction content by the preset instruction format, the current timestamp is obtained, the hash value is obtained by performing hash calculation on the instruction content and the timestamp, the protection board activation instruction is generated based on the instruction content, the timestamp and the hash value and is sent to the main control chip, the integrity verification is performed through the hash value, the time limit verification is performed through the timestamp, the format verification is performed through the instruction format, the illegal protection board activation instruction is avoided, and the safety of the lithium battery protection board activation is greatly improved.

[0054] Although the specific embodiments of the application are described above, those skilled in the art should understand that the specific embodiments described are only illustrative, and are not intended to limit the scope of the application, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the application should be covered within the scope of the claims of the application.

Claims

1. A method of activating a lithium battery protection board, the method comprising: The method needs to use one lithium battery protection plate activation device, which comprises one upper computer, one Ethernet communication module, one main control chip and a plurality of optical coupling on-off modules; ​ One end of the Ethernet communication module is connected with the upper computer, and the other end is connected with the main control chip; the main control chip is connected with each optical coupling on-off module; The Ethernet communication module comprises one Ethernet chip U30, one resistor R116, one resistor R129, one capacitor C10, one capacitor C165, one capacitor C166, one capacitor C167, one capacitor C173, one capacitor C174 and one crystal oscillator Y4; Pin 1 of the Ethernet chip U30 is connected with the resistor R116, pins 3, 4, 5, 6, 7, 9, 10 are connected with the main control chip, pin 11 is connected with one end of the resistor R129, and pin 12 is connected with the other end of the resistor R129; The capacitor C10, the capacitor C167 and the capacitor C166 are connected in parallel, one end of which is connected with pins 13, 14, 15, 16, 19, 20 and 21 of the Ethernet chip U30, and the other end is connected with one end of the capacitor C165 and pin 23 of the Ethernet chip U30; the other end of the capacitor C165 is connected with pin 22 of the Ethernet chip U30; One end of the crystal oscillator Y4 is connected with pin 24 of the Ethernet chip U30 and one end of the capacitor C174, and the other end is connected with pin 25 of the Ethernet chip U30 and one end of the capacitor C173; the other end of the capacitor C173 is connected with the other end of the capacitor C174; The model of the Ethernet chip U30 is LAN8720A; The optical coupling on-off module comprises one optical coupling relay Q1, one resistor R45 and one resistor R46; One end of the resistor R45 is connected with pin 1 of the optical coupling relay Q1, and the other end is connected with pin 2 of the optical coupling relay Q1 and one end of the resistor R46; the other end of the resistor R46 is connected with the main control chip; The model of the optical coupling relay Q1 is AA24F; The model of the main control chip is STM32F4; The method comprises the following steps: Step S1, the upper computer obtains the input activation task carrying the channel number through the visual interface; Step S2, the upper computer converts the activation task into instruction content through a preset instruction format, obtains the current timestamp, performs hash calculation on the instruction content and the timestamp to obtain a hash value, and generates a protection plate activation instruction based on the instruction content, the timestamp and the hash value; Step S3, the upper computer sends the protection plate activation instruction to the main control chip through the Ethernet communication module; Step S4, after the main control chip verifies the received protection plate activation instruction, the channel number carried by the protection plate activation instruction is used to synchronously control the corresponding optical coupling on-off module to be attracted, so as to automatically short the B-interface and the P-interface of the protection plate.

2. The lithium battery protection board activation method as described in claim 1, characterized in that: The step S4 is specifically: The master control chip receives the protection board activation instruction in real time, analyzes the protection board activation instruction to obtain instruction content, a timestamp, and a hash value, performs integrity verification on the instruction content and the timestamp through the hash value, performs time limit verification through the timestamp, performs format verification on the instruction content based on a preset instruction format, analyzes the instruction content to obtain a channel number, and synchronously controls the corresponding photoelectric coupling on-off module to be attracted based on the channel number, so as to automatically short-circuit the B-interface and the P-interface of the protection board.

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