Battery replacing system and battery replacing cabinet based on NFC (Near Field Communication)

Abstract

The utility model relates to an NFC-based battery replacement system and a battery replacement cabinet, the NFC-based battery replacement system comprises a main control unit, an NFC unit and a radio frequency unit, the main control unit is provided with a main control chip, an operation state indication circuit, a network state indication circuit and a network mode indication circuit, the radio frequency unit is provided with a radio frequency chip, the NFC unit is provided with a connection circuit, and the connection circuit is connected with the main control chip. The running state indicating circuit, the network state indicating circuit, the network mode indicating circuit, the radio frequency chip and the connecting circuit are all connected with the main control chip, the network state indicating circuit is used for indicating the network state of the power conversion system, and the network mode indicating circuit is used for indicating the network mode of the power conversion system. And the main control chip is used for controlling the bin door of the battery replacement cabinet to be opened according to the card ID of the NFC label and an encryption algorithm when the battery is close to the NFC induction area of the battery replacement cabinet. The battery is close to the NFC induction area of the battery replacement cabinet, rapid battery replacement is achieved, and the safety of the system is improved through the built-in encryption algorithm and the encryption sector of the NFC label.

Description

Technical Field

[0001] This application relates to the technical field of battery replacement for intelligent battery replacement cabinets. Specifically, it relates to a battery replacement system and a battery replacement cabinet based on NFC. Background Art

[0002] The battery replacement cabinet is a product for quickly replacing batteries for electric vehicle users such as riders, outsourced delivery guys, and express delivery guys, and can help these users quickly complete the replacement of electric vehicle batteries.

[0003] Currently, intelligent battery replacement cabinets on the market include battery replacement methods based on "scanning QR codes" and "facial recognition". Among them, the disadvantage of the "scanning QR code" battery replacement method is that when a user comes to the battery replacement cabinet, they need to take out their mobile phone, unlock the screen, find and open the corresponding APP or small program, and find the "scan code" button in the software, and then scan the cabinet QR code to perform the battery replacement operation. The steps are cumbersome and not convenient for users who are eager to replace the battery. The disadvantage of the "facial recognition" battery replacement method is that before facial recognition, it is necessary to remove accessories that cover the face, such as helmets and masks. The steps are cumbersome, causing great trouble to people for battery replacement, and having the disadvantages of difficult battery replacement and long battery replacement time. Summary of the Utility Model

[0004] The purpose of this application is to provide a battery replacement system and a battery replacement cabinet based on NFC to solve the problems of cumbersome battery replacement steps, difficult battery replacement, and long battery replacement time existing in the existing QR code scanning battery replacement method and facial recognition battery replacement method.

[0005] To solve the above problems, this application adopts the following technical solutions to achieve:

[0006] The first aspect of this application provides a battery replacement system based on NFC, including: a main control unit, an NFC unit, and a radio frequency unit. The main control unit is provided with a main control chip, an operating status indication circuit, a network status indication circuit, and a network mode indication circuit. The radio frequency unit is provided with a radio frequency chip. The NFC unit is provided with a connection circuit. The operating status indication circuit, the network status indication circuit, the network mode indication circuit, the radio frequency chip, and the connection circuit are all connected to the main control chip. Among them, the operating status indication circuit is used to indicate the operating status of the battery replacement system, the network status indication circuit is used to indicate the network status of the battery replacement system, the network mode indication circuit is used to indicate the network mode of the battery replacement system, and the main control chip is used to control the opening of the cabinet door of the battery replacement cabinet according to the card ID of the NFC tag and the encryption algorithm when the battery approaches the NFC induction area of the battery replacement cabinet.

[0007] Further, the main control unit includes a first capacitive reactance circuit, the first capacitive reactance circuit is connected to the main control chip, and the other end of the first capacitive reactance circuit is grounded.

[0008] Further, the main control unit includes a reset circuit, and the reset circuit is connected to the main control chip.

[0009] Further, the operation status indication circuit includes a first triode, a first LED lamp and a first resistor. The first resistor is respectively connected to the base of the first triode and the main control chip. The collector of the first triode is connected to the first LED lamp, and the emitter of the first triode is grounded.

[0010] Further, the network status indication circuit includes a second triode, a second LED lamp and a second resistor. The second resistor is respectively connected to the base of the second triode and the main control chip. The collector of the second triode is connected to the second LED lamp, and the emitter of the second triode is grounded.

[0011] Further, the network mode indication circuit includes a third triode, a third LED lamp and a third resistor. The third resistor is respectively connected to the base of the third triode and the main control chip. The collector of the third triode is connected to the third LED lamp, and the emitter of the third triode is grounded.

[0012] Further, the radio frequency unit includes a crystal oscillator circuit, and the crystal oscillator circuit is connected to the radio frequency chip.

[0013] Further, the radio frequency unit includes a second capacitive reactance circuit. One end of the second capacitive reactance circuit is connected to the radio frequency chip, and the other end of the second capacitive reactance circuit is grounded.

[0014] The present application also provides a battery swapping cabinet, including the NFC-based battery swapping system as described in any one of the above.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: when the battery approaches the NFC sensing area of the battery swapping cabinet, the main control chip controls the opening of the cabinet door of the battery swapping cabinet according to the card ID of the NFC tag and the encryption algorithm. Without relying on mobile phone scanning codes or when the battery swapping cabinet is offline, by approaching the NFC sensing area of the battery swapping cabinet with the NFC tag built in the battery, the battery swapping cabinet reads the NFC tag for encrypted interactive communication, and through the one-card-one-password algorithm, confirms the legitimacy of the battery, drives the warehouse control system to open the empty warehouse, put in the battery, and take out the new battery, realizing an end-to-end NFC fast battery swapping method that does not rely on mobile phone scanning codes and does not rely on platform communication verification. Furthermore, only by approaching the NFC sensing area of the battery swapping cabinet with the battery can fast battery swapping be achieved, simplifying the battery swapping operation. At the same time, through the built-in encryption algorithm and the encrypted sector of the NFC tag, the security of the system is improved. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of a main control unit provided by an embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of an NFC unit provided by an embodiment of the present application;

[0018] Figure 3 It is a schematic diagram of a radio frequency unit provided by an embodiment of the present application; and

[0019] Figure 4 It is a system block diagram of a battery swapping system based on NFC provided by an embodiment of the present application.

[0020] Description of the Reference Numerals:

[0021] 100, main control unit; 110, main control chip; 120, operating status indication circuit; 121, first triode; 122, first LED lamp; 123, first resistor; 130, network status indication circuit; 131, second triode; 132, second LED lamp; 133, second resistor; 140, network mode indication circuit; 141, third triode; 142, third LED lamp; 143, third resistor; 150, first capacitive reactance circuit; 160, reset circuit; 200, NFC unit; 210, connection circuit; 300, radio frequency unit; 310, radio frequency chip; 320, crystal oscillator circuit; 330, second capacitive reactance circuit. Detailed Embodiments

[0022] The following will describe in detail the specific embodiments of the present application with reference to the accompanying drawings.

[0023] It should be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other. The detailed description in the specific embodiments should be understood as an explanatory illustration of the gist of the present application and should not be regarded as an improper limitation of the present application.

[0024] It should be understood that the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. These orientation terms are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0025] Currently, the common intelligent battery swapping cabinets on the market include battery swapping methods based on "scanning QR codes", "facial recognition", etc. Among them, the disadvantage of the "scanning QR code" battery swapping method is that when a user comes to the battery swapping cabinet, they need to take out their mobile phone, unlock the screen, find and open the corresponding APP or small program, and then find the "scan code" button in the software to scan the QR code on the cabinet to perform the battery swapping operation. The steps are cumbersome and inconvenient for users who are eager to swap batteries. The disadvantage of the "facial recognition" battery swapping method is that before facial recognition, it is necessary to remove accessories that cover the face, such as helmets and masks. The steps are cumbersome, bringing great trouble to people's battery swapping, and having the disadvantages of difficult battery swapping and long battery swapping time.

[0026] In view of this, the present application provides an NFC-based battery swapping system to solve the problems brought by the "scanning QR code" battery swapping method and the "facial recognition" battery swapping method. In the NFC-based battery swapping system of the embodiments of the present application, without relying on mobile phone QR code scanning or when the battery swapping cabinet is offline, by bringing the NFC tag built in the battery close to the NFC sensing area of the battery swapping cabinet, the battery swapping cabinet reads the NFC tag for encrypted interactive communication. Through the one-card-one-password algorithm, the legitimacy of the battery is confirmed, and the warehouse control system is driven to open the empty warehouse, put in the battery, and take out the new battery. It has an extremely fast warehouse opening speed and realizes an end-to-end NFC fast battery swapping method that does not rely on mobile phone QR code scanning and does not rely on platform communication verification. For example, the battery swapping system can be applied to a battery pack with a metal shell. The battery shell is built with an NFC anti-metal tag and pasted on the inner wall of the battery shell. The NFC communication board of the battery swapping system is internally composed of an RFID reader chip and performs serial communication with the 4G communication board of the battery swapping cabinet for reading and writing the NFC anti-metal tag built in the battery shell. The encrypted sector of the NFC tag will be pre-written with a key according to the encryption algorithm. The key is calculated by MD5 based on the ID of the tag and a string of keys and written to the third block of the sector and set to be non-readable and non-writable. When the user's battery approaches the NFC sensing area of the battery swapping cabinet, the key will be calculated using the same encryption algorithm according to the read card ID of the NFC tag. And this key is used to read the encrypted sector of the NFC. If it can be successfully read, it means it is a legitimate battery, and the warehouse control system drives to open the empty warehouse, allowing the user to put in the battery and take out the new battery. It realizes the functions of fast induction and door opening for battery swapping.

[0027] Figure 1 Schematic diagram of a main control unit provided by an embodiment of the present application Figure 2 Schematic diagram of an NFC unit provided by an embodiment of the present application Figure 3 Schematic diagram of a radio frequency unit provided by an embodiment of the present application Figure 4 System block diagram of an NFC-based battery swapping system provided by an embodiment of the present application

[0028] As Figures 1 to 4As shown in the figure, an embodiment of the present application provides a battery swapping system based on NFC, including: a main control unit 100, an NFC unit 200, and a radio frequency unit 300. The main control unit 100 is provided with a main control chip 110, an operating status indication circuit 120, a network status indication circuit 130, and a network mode indication circuit 140. The radio frequency unit 300 is provided with a radio frequency chip 310. The NFC unit 200 is provided with a connection circuit 210. The operating status indication circuit 120, the network status indication circuit 130, the network mode indication circuit 140, the radio frequency chip 310, and the connection circuit 210 are all connected to the main control chip 110. Among them, the operating status indication circuit 120 is used to indicate the operating status of the battery swapping system, the network status indication circuit 130 is used to indicate the network status of the battery swapping system, the network mode indication circuit 140 is used to indicate the network mode of the battery swapping system, and the main control chip 110 is used to control the opening of the compartment door of the battery swapping cabinet according to the card ID of the NFC tag and the encryption algorithm when the battery approaches the NFC sensing area of the battery swapping cabinet.

[0029] Specifically, the user brings the battery equipped with the NFC anti-metal tag close to the NFC sensing area of the battery swapping cabinet. When the battery approaches the sensing area, the connection circuit 210 of the NFC unit 200 transmits the signal to the main control chip 110. The main control chip 110 calculates the key according to the card ID of the NFC tag and the preset encryption algorithm. The main control chip 110 communicates with the main control unit of the battery swapping cabinet through the radio frequency chip 310 of the radio frequency unit 300 to verify the legitimacy of the battery.

[0030] If the battery is legal, the main control unit of the battery swapping cabinet will control the opening of the compartment door, allowing the user to put the battery into the battery swapping cabinet or take out a new battery from the battery swapping cabinet. The operating status indication circuit 120 is used to indicate the operating status of the system, the network status indication circuit 130 is used to indicate the network status of the system, and the network mode indication circuit 140 is used to indicate the network mode of the system. The user does not need to perform cumbersome operations such as scanning codes or face recognition. Just bring the battery close to the NFC sensing area of the battery swapping cabinet to achieve fast battery swapping, which simplifies the battery swapping operation. At the same time, through the built-in encryption algorithm and the encrypted sector of the NFC tag, the security of the system is improved.

[0031] By bringing the NFC tag built into the battery close to the NFC sensing area of the battery swapping cabinet, the battery swapping cabinet reads the NFC tag for encrypted interactive communication. Through the one-card-one-password algorithm, the legitimacy of the battery is confirmed, and the warehouse control system is driven to open the empty warehouse, put in the battery, and take out the new battery, realizing an end-to-end NFC fast battery swapping method that does not rely on mobile phone code scanning or platform communication verification. Furthermore, just bringing the battery close to the NFC sensing area of the battery swapping cabinet can achieve fast battery swapping, which simplifies the battery swapping operation. At the same time, through the built-in encryption algorithm and the encrypted sector of the NFC tag, the security of the system is improved.

[0032] In some embodiments, the main control unit 100 includes a first capacitive reactance circuit 150. The first capacitive reactance circuit 150 is connected to the main control chip 110, and the other end of the first capacitive reactance circuit 150 is grounded.

[0033] Specifically, the first capacitive reactance circuit 150 is connected to the power supply terminal VCC_4G_3V8. While the first capacitive reactance circuit 150 is grounded, it is also connected to the main control chip 110. The first capacitive reactance circuit 150 is provided with a plurality of capacitors with different capacitance values, so as to filter different components, making the signal entering the main control chip 110 more accurate. It should be noted that different capacitors of the first capacitive reactance circuit 150 are connected to multiple pins of the main control chip 110.

[0034] In some embodiments, the main control unit 100 includes a reset circuit 160. The reset circuit 160 is connected to the main control chip 110.

[0035] Specifically, when the system has an abnormality or needs to be restarted, the user can press the reset switch to trigger the reset circuit 160. After the reset circuit 160 receives the reset signal, it will send a reset request to the main control chip 110. After receiving the reset request, the main control chip 110 will perform a reset operation, resetting its own operating state to the initial state to complete the reset operation. For example, the reset circuit 160 is provided with two reset switches. The two reset switches are respectively connected to different pins of the main control chip 110, and a TVS tube is also provided on the line connecting the reset switch and the main control chip 110 for protection.

[0036] In some embodiments, the operating state indication circuit 120 includes a first triode 121, a first LED lamp 122, and a first resistor 123. The first resistor 123 is respectively connected to the base of the first triode 121 and the main control chip 110. The collector of the first triode 121 is connected to the first LED lamp 122, and the emitter of the first triode 123 is grounded.

[0037] Specifically, the first LED lamp 122 is connected to the power supply terminal VCC_4G_3V8 through a resistor. The first LED lamp 122 is connected to the collector of the first triode 121. The base of the first triode 121 is connected to the main control chip 110 through the first resistor 123, and the emitter of the first triode 123 is grounded. The base of the first triode 121 is also grounded through another resistor. For example, the first LED lamp 122 emits red light, and through the red light state (lit, flashing, extinguished, etc.), the operating condition of the operating state indication circuit 120 is characterized, and then the operating condition of the battery swapping system of the embodiments of the present application is indicated.

[0038] In some embodiments, the network status indication circuit 130 includes a second triode 131, a second LED 132, and a second resistor 133. The second resistor 133 is connected to the base of the second triode 131 and the main control chip 110 respectively. The collector of the second triode 131 is connected to the second LED 132, and the emitter of the second triode 131 is grounded.

[0039] Specifically, the second LED 132 is connected to the power supply terminal VCC_4G_3V8 through a resistor. The second LED 132 is connected to the collector of the second triode 131. The base of the second triode 131 is connected to the main control chip 110 through the second resistor 133. The emitter of the second triode 133 is grounded. The base of the second triode 131 is also grounded through another resistor. For example, the second LED 132 emits blue light, and the operating condition of the network status indication circuit 130 is characterized by the blue light state (lit, flashing, extinguished, etc.), thereby indicating the network status of the battery swapping system according to the embodiments of the present application.

[0040] In some embodiments, the network mode indication circuit 140 includes a third triode 141, a third LED 142, and a third resistor 143. The third resistor 143 is connected to the base of the third triode 141 and the main control chip 110 respectively. The collector of the third triode 141 is connected to the third LED 142, and the emitter of the third triode 141 is grounded.

[0041] Specifically, the third LED 142 is connected to the power supply terminal VCC_4G_3V8 through a resistor. The third LED 142 is connected to the collector of the third triode 141. The base of the third triode 141 is connected to the main control chip 110 through the third resistor 143. The emitter of the third triode 143 is grounded. The base of the third triode 141 is also grounded through another resistor. For example, the third LED 142 emits green light, and the network mode of the battery swapping system according to the embodiments of the present application is characterized by the green light state (lit, flashing, extinguished, etc.).

[0042] In some embodiments, the radio frequency unit 300 includes a crystal oscillator circuit 320, and the crystal oscillator circuit 320 is connected to the radio frequency chip 310.

[0043] Specifically, the crystal oscillator circuit 320 provides a stable clock signal for the RF chip 310 to ensure the reliability and stability of the RF unit 300. The crystal oscillator circuit 320 is configured to generate an accurate clock signal, which is used to provide a time reference for the RF chip 310. The RF chip 310 receives the clock signal from the crystal oscillator circuit 320 through its input terminal, and the RF chip 310 uses this clock signal to synchronize its internal operations, including modulation, demodulation, frequency synthesis, etc. Under the processing of the RF chip 310, wireless communication signals can be correctly transmitted or received. For example, the crystal oscillator circuit 320 is a passive crystal oscillator, which utilizes the physical properties of crystal materials to oscillate at a specific frequency, generating an accurate oscillation signal and a stable clock signal. The passive crystal oscillator does not require an external power supply to operate and only needs to be coupled to the circuit through a capacitor, thus simplifying the circuit design and reducing power consumption.

[0044] In some embodiments, the RF unit 300 includes a second capacitive reactance circuit 330. One end of the second capacitive reactance circuit 330 is connected to the RF chip 310, and the other end of the second capacitive reactance circuit 330 is grounded.

[0045] Specifically, the second capacitive reactance circuit 330 is configured to provide a capacitive reactance value at one end of the RF chip 310 to balance the operating environment of the RF chip 310. The RF chip 310 is connected to one end of the second capacitive reactance circuit 330 so as to filter the RF signal through the second capacitive reactance circuit 330. Under the processing of the RF chip 310, the wireless communication signal can be transmitted or received more accurately and effectively.

[0046] The embodiment of the present application also provides a battery swapping cabinet, including the NFC-based battery swapping system as described in any one of the above.

[0047] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present application.

Claims

1. A battery swapping system based on NFC, characterized in that Comprising: A main control unit, an NFC unit and a radio frequency unit. The main control unit is provided with a main control chip, an operating status indication circuit, a network status indication circuit and a network mode indication circuit. The radio frequency unit is provided with a radio frequency chip. The NFC unit is provided with a connection circuit. The operating status indication circuit, the network status indication circuit, the network mode indication circuit, the radio frequency chip and the connection circuit are all connected to the main control chip. Among them, the operating status indication circuit is used to indicate the operating status of the battery swapping system, the network status indication circuit is used to indicate the network status of the battery swapping system, the network mode indication circuit is used to indicate the network mode of the battery swapping system, and the main control chip is used to control the opening of the compartment door of the battery swapping cabinet according to the card ID of the NFC tag and the encryption algorithm when the battery approaches the NFC induction area of the battery swapping cabinet.

2. The battery swapping system based on NFC according to claim 1, wherein, The main control unit includes a first capacitive reactance circuit, the first capacitive reactance circuit is connected to the main control chip, and the other end of the first capacitive reactance circuit is grounded.

3. The battery swapping system based on NFC according to claim 2, wherein, The main control unit includes a reset circuit, and the reset circuit is connected to the main control chip.

4. The battery swapping system based on NFC according to claim 3, wherein, The operating status indication circuit includes a first triode, a first LED lamp and a first resistor. The first resistor is respectively connected to the base of the first triode and the main control chip. The collector of the first triode is connected to the first LED lamp, and the emitter of the first triode is grounded.

5. The battery swapping system based on NFC according to claim 1, characterized in that The network status indication circuit includes a second triode, a second LED lamp and a second resistor. The second resistor is respectively connected to the base of the second triode and the main control chip. The collector of the second triode is connected to the second LED lamp, and the emitter of the second triode is grounded.

6. The battery swapping system based on NFC according to claim 1, wherein The network mode indication circuit includes a third triode, a third LED lamp and a third resistor. The third resistor is respectively connected to the base of the third triode and the main control chip. The collector of the third triode is connected to the third LED lamp, and the emitter of the third triode is grounded.

7. The battery swapping system based on NFC according to claim 1, wherein The radio frequency unit includes a crystal oscillator circuit, and the crystal oscillator circuit is connected to the radio frequency chip.

8. The battery swapping system based on NFC according to claim 1, wherein The radio frequency unit includes a second capacitive reactance circuit. One end of the second capacitive reactance circuit is connected to the radio frequency chip, and the other end of the second capacitive reactance circuit is grounded.

9. A battery swapping cabinet, characterized in that, Comprising the NFC-based battery swapping system according to any one of claims 1-8.

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