Lithium battery protection board activation device and method

Abstract

The invention provides a lithium battery protection board activation device and method in the technical field of lithium battery formation and capacity grading. The device comprises an upper 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 upper computer, and the other end of the Ethernet communication module 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 method has the advantage that the activation efficiency of the lithium battery protection plate is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery capacity conversion, and in particular to a lithium battery protection plate activation device and method. Background Art

[0002] Vacuum cleaners, sweeping robots, electric scooters, etc. on the market are all equipped with lithium batteries. For product safety, lithium batteries are equipped with protection boards; the B+ and B- interfaces on the protection board are used to connect lithium batteries, and the P+ and P- interfaces are used for voltage output; under normal circumstances, the MOS tube on the protection board is in the off state, and the P+ and P- interfaces have no voltage output. A wire is needed to short-circuit the B- and P- interfaces so that the P+ and P- interfaces will have voltage output.

[0003] After the lithium battery is produced, it needs to be split. Splitting is the initial charge and discharge of the lithium battery to activate the internal chemical substances, and splitting is the capacity sorting of the lithium battery. If the lithium battery with a protection board is split, the P+ interface and the P- interface must have voltage output, which requires manual use of a wire to short-circuit the B- interface and the P- interface to activate the protection board; but for the splitting of batch lithium batteries, manual operation is inefficient.

[0004] Therefore, how to provide a lithium battery protection board activation device and method to improve the activation efficiency of the lithium battery protection board has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a lithium battery protection board activation device and method to improve the activation efficiency of the lithium battery protection board.

[0006] In a first aspect, the present invention provides a lithium battery protection board activation device, comprising a host computer, an Ethernet communication module, a main control chip and a plurality of optical coupling on-off modules;

[0007] 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 optical coupling on-off module;

[0008] 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;

[0009] Pin 1 of the Ethernet chip U30 is connected to the 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 the resistor R129, and pin 12 is connected to the other end of the resistor R129;

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

[0011] 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.

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

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

[0014] One end of the resistor R45 is connected to pin 1 of the optocoupler relay Q1 , and the other end is connected to pin 2 of the optocoupler relay Q1 and one end of the resistor R46 ; the other end of the resistor R46 is connected to the main control chip.

[0015] Furthermore, the model of the optical coupler relay Q1 is AA24F.

[0016] Furthermore, the model of the main control chip is STM32F4.

[0017] In a second aspect, the present invention provides a method for activating a lithium battery protection board, comprising the following steps:

[0018] Step S1, the host computer obtains the input activation task carrying the channel number through the visual interface;

[0019] 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 timestamp to obtain a hash value, and generates a protection board activation instruction based on the instruction content, timestamp and hash value;

[0020] Step S3, the host computer sends the protection board activation instruction to the main control chip through the Ethernet communication module;

[0021] Step S4: After the main control chip verifies the received protection board activation instruction, it synchronously controls the corresponding optical coupling on-off module to be attracted based on the channel number carried in the protection board activation instruction to automatically short-circuit the B-interface and the P-interface of the protection board.

[0022] Furthermore, the step S4 is specifically as follows:

[0023] The main control chip receives the protection board activation instruction in real time, parses the protection board activation instruction to obtain the instruction content, timestamp and hash value, performs integrity check on the instruction content and timestamp through the hash value, performs timeliness check through the timestamp, and then performs format check on the instruction content based on the preset instruction format, parses the instruction content to obtain the channel number, and synchronously controls the corresponding optical coupling on-off module to be attracted based on the channel number, so as to automatically short-circuit the B-interface and P-interface of the protection board.

[0024] The advantages of the present invention are:

[0025] 1. By setting up a host computer, an Ethernet communication module, a main control chip and several optocoupler on-off modules, the host computer, the Ethernet communication module, the main control chip and the optocoupler on-off modules are connected in sequence. The host computer sends a protection board activation instruction to the main control chip through the Ethernet communication module. The main control chip can control the optocoupler on-off modules corresponding to the batch to be turned on and off, so as to activate the lithium battery protection board in batches, thereby greatly improving the activation efficiency of the lithium battery protection board.

[0026] 2. Convert the activation task into instruction content through the preset instruction format, obtain the current timestamp, perform hash calculation on the instruction content and timestamp to obtain the hash value, generate the protection board activation instruction based on the instruction content, timestamp and hash value and send it to the main control chip, and then perform integrity check through the hash value, time check through the timestamp, and format check through the instruction format to avoid executing illegal protection board activation instructions, thereby greatly improving the safety of lithium battery protection board activation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0028] Figure 1 The invention discloses a circuit principle block diagram of a lithium battery protection board activation device.

[0029] Figure 2 It is a circuit diagram of the Ethernet communication module of the present invention.

[0030] Figure 3 It is a circuit diagram of the optical coupling on-off module of the present invention.

[0031] Figure 4The present invention is a flow chart of a lithium battery protection board activation method. DETAILED DESCRIPTION

[0032] The overall idea of ​​the technical solution in the embodiment of the present application is as follows: the host computer sends a protection board activation instruction to the main control chip through the Ethernet communication module, and the main control chip controls the batch-corresponding optocoupler on-off modules to activate the lithium battery protection boards in batches, replacing traditional manual operations, thereby improving the activation efficiency of the lithium battery protection boards.

[0033] Please refer to Figures 1 to 4 As shown, a preferred embodiment of a lithium battery protection board activation device of the present invention includes a host computer, an Ethernet communication module, a main control chip and a plurality of optical coupling on-off 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 optical coupling on-off 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 the 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 the resistor R129, and pin 12 is connected to the other end of the resistor R129;

[0037] After the capacitor C10, the capacitor C167 and the capacitor C166 are connected in parallel, one end is connected to the pins 13, 14, 15, 16, 19, 20, 21 of the Ethernet chip U30, and the other end is connected to one end of the capacitor C165 and the pin 23 of the Ethernet chip U30; the other end of the capacitor C165 is connected to the pin 22 of the 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 that can establish the best connection with the destination host through self-negotiation, supports HPAuto-MD IX (automatically detects the cable connection type required for the current connection) automatic flip function, and can change the connection to a direct connection or a cross connection without changing the network cable. It is connected to the main control chip through the RMII interface, and the main control chip realizes UDP communication by transplanting the LWIP protocol stack.

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

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

[0042] The model of the optical coupler 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 the Cortex-M4 core, using 90 nanometer NVM process and ART technology, with an internal integrated Ethernet peripheral, which is actually a media access control through a DMA controller, and can send and receive data packets through the Ethernet peripheral according to the IEEE 802.3-2002 standard.

[0044] A preferred embodiment of a lithium battery protection board activation method of the present invention 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 timestamp to obtain a hash value, and generates a protection board activation instruction based on the instruction content, timestamp and 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 verifies the received protection board activation instruction, it synchronously controls the corresponding optical coupling on-off module to be attracted based on the channel number carried in the protection board activation instruction to automatically short-circuit the B-interface and the P-interface of the protection board.

[0049] The step S4 is specifically as follows:

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

[0051] In summary, the advantages of the present invention are:

[0052] 1. By setting up a host computer, an Ethernet communication module, a main control chip and several optocoupler on-off modules, the host computer, the Ethernet communication module, the main control chip and the optocoupler on-off modules are connected in sequence. The host computer sends a protection board activation instruction to the main control chip through the Ethernet communication module. The main control chip can control the optocoupler on-off modules corresponding to the batch to be turned on and off, so as to activate the lithium battery protection board in batches, thereby greatly improving the activation efficiency of the lithium battery protection board.

[0053] 2. Convert the activation task into instruction content through the preset instruction format, obtain the current timestamp, perform hash calculation on the instruction content and timestamp to obtain the hash value, generate the protection board activation instruction based on the instruction content, timestamp and hash value and send it to the main control chip, and then perform integrity check through the hash value, time check through the timestamp, and format check through the instruction format to avoid executing illegal protection board activation instructions, thereby greatly improving the safety of lithium battery protection board activation.

[0054] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A lithium battery protection board activation device, characterized in that: It includes a host computer, an Ethernet communication module, a main control chip and several optical coupling on-off modules; 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 optical coupling on-off module; 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; Pin 1 of the Ethernet chip U30 is connected to the 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 the resistor R129, and pin 12 is connected to the other end of the resistor R129; After the capacitor C10, the capacitor C167 and the capacitor C166 are connected in parallel, one end is connected to the pins 13, 14, 15, 16, 19, 20, 21 of the Ethernet chip U30, and the other end is connected to one end of the capacitor C165 and the pin 23 of the Ethernet chip U30; the other end of the capacitor C165 is connected to the pin 22 of the Ethernet chip U30; 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.

2. A lithium battery protection board activation device as claimed in claim 1, characterized in that: The model of the Ethernet chip U30 is LAN8720A.

3. A lithium battery protection board activation device as claimed in claim 1, characterized in that: The optical coupling on-off module includes an optical coupling relay Q1, a resistor R45 and a resistor R46; One end of the resistor R45 is connected to pin 1 of the optocoupler relay Q1 , and the other end is connected to pin 2 of the optocoupler relay Q1 and one end of the resistor R46 ; the other end of the resistor R46 is connected to the main control chip.

4. A lithium battery protection board activation device as claimed in claim 3, characterized in that: The model of the optical coupler relay Q1 is AA24F.

5. A lithium battery protection board activation device as claimed in claim 1, characterized in that: The model of the main control chip is STM32F4.

6. A method for activating a lithium battery protection board, characterized in that: The method requires the use of an activation device as claimed in any one of claims 1 to 5, comprising the following steps: Step S1, the host computer obtains the input activation task carrying the channel number through the visual interface; 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 timestamp to obtain a hash value, and generates a protection board activation instruction based on the instruction content, timestamp and hash value; Step S3, the host computer sends the protection board activation instruction to the main control chip through the Ethernet communication module; Step S4: After the main control chip verifies the received protection board activation instruction, it synchronously controls the corresponding optical coupling on-off module to be attracted based on the channel number carried in the protection board activation instruction to automatically short-circuit the B-interface and the P-interface of the protection board.

7. A lithium battery protection board activation method as claimed in claim 6, characterized in that: The step S4 is specifically as follows: The main control chip receives the protection board activation instruction in real time, parses the protection board activation instruction to obtain the instruction content, timestamp and hash value, performs integrity check on the instruction content and timestamp through the hash value, performs timeliness check through the timestamp, and then performs format check on the instruction content based on the preset instruction format, parses the instruction content to obtain the channel number, and synchronously controls the corresponding optical coupling on-off module to be attracted based on the channel number, so as to automatically short-circuit the B-interface and P-interface of the protection board.

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