Battery system for anti-counterfeiting authentication based on single-wire communication

Abstract

The present disclosure provides a battery system based on single-wire communication for anti-counterfeiting authentication, belonging to the technical field of battery anti-counterfeiting. The battery system based on single-wire communication for anti-counterfeiting authentication comprises a verification device and a battery built-in security chip connected through a single communication line. The verification device comprises a power supply module, a data processing and verification module, and a signal generation circuit, which is used to generate a verification signal according to verification data. The battery built-in security chip comprises a power management module, a data storage and processing module, and a signal modulation circuit, which is used to modulate response data into a response signal. The communication line is used to realize the bidirectional communication of the verification signal and the response signal. The high-level holding time of the verification signal and the response signal is greater than the low-level holding time. The present disclosure can effectively reduce the design and production costs of the battery and the built-in security chip while ensuring high battery anti-counterfeiting security.

Description

Technical Field

[0001] This disclosure relates to the field of battery anti-counterfeiting technology, and in particular to a battery system for anti-counterfeiting authentication based on single-wire communication. Background Technology

[0002] Counterfeit and substandard battery products are rampant in the current battery market. Traditional anti-counterfeiting methods, such as label anti-counterfeiting, are easily copied by criminals using simple printing techniques and pasted onto counterfeit batteries, making it difficult for consumers to distinguish between genuine and fake products. While QR code anti-counterfeiting enhances anti-counterfeiting capabilities to some extent, QR codes also pose a risk of being scanned and copied, and consumers need additional scanning devices for verification, increasing verification costs and operational complexity.

[0003] Some advanced anti-counterfeiting technologies use common encryption chips, but these technologies usually require complex circuit connections to achieve data transmission and processing, and encryption chips often require independent power supplies. This not only increases the production cost of batteries, but also increases the design difficulty and size of batteries, which is not conducive to the miniaturization and low-cost development of battery products. Utility Model Content

[0004] This disclosure provides a battery system for anti-counterfeiting authentication based on single-wire communication, which can effectively reduce the design and production costs of the battery and its built-in security chip while ensuring high anti-counterfeiting security. The technical solution includes at least the following:

[0005] On one hand, a battery system for anti-counterfeiting authentication based on single-wire communication is provided, including a verification device and a battery-embedded safety chip connected via a single communication line. The verification device includes a power module, a data processing and verification module, and a signal generation circuit. The power module supplies power to the verification device. The data processing and verification module outputs verification data to the signal generation circuit and can determine the authenticity of the battery based on the received response signal. The signal generation circuit generates a verification signal based on the verification data. The battery-embedded safety chip includes a power management module, a data storage and processing module, and a signal modulation circuit. The power management module extracts and stores electrical energy from the communication line to power the battery-embedded safety chip. The data storage and processing module stores battery anti-counterfeiting data and can output response data to the signal modulation circuit based on the received verification signal. The signal modulation circuit modulates the response data into a response signal. The communication line enables bidirectional communication between the verification signal and the response signal, wherein the high-level duration of the verification signal and the response signal is longer than the low-level duration.

[0006] Optionally, the verification device further includes a first communication interface, which is electrically connected to the data processing and verification module and the signal generation circuit; the battery-embedded safety chip further includes a second communication interface, which is electrically connected to the data storage and processing module and the signal modulation circuit; the first communication interface and the second communication interface are connected via the communication line.

[0007] Optionally, the power management module includes a current protection submodule and an energy storage submodule. The first end of the current protection submodule is connected to the communication line; the first end of the energy storage submodule is connected to the power supply port of the battery's built-in safety chip and the second end of the current protection submodule, and the second end of the energy storage submodule is grounded. The current protection submodule is configured to allow current to flow from the first end to the second end when the communication line transmits a verification signal, and to block current when the communication line transmits an acknowledgment signal.

[0008] Optionally, the current protection submodule includes a unidirectional diode, the anode of which is the first terminal of the current protection submodule, and the cathode of which is the second terminal of the current protection submodule; the energy storage submodule includes a capacitor.

[0009] Optionally, the signal generation circuit is further configured to, based on the verification data, maintain a low level for W microseconds before transmitting each byte as a start; maintain a high level for X microseconds, then maintain a low level for L microseconds before restoring a high level to send the digital 1; maintain a high level for Y microseconds, then maintain a low level for L microseconds before restoring a high level to send the digital 0, thereby generating the verification signal conforming to a custom single-wire communication protocol, wherein X is greater than L, Y is greater than L, and X is not equal to Y.

[0010] Optionally, the signal modulation circuit is further configured to, based on the response data, maintain a low level for W microseconds before transmitting each byte as a start; maintain a high level for X microseconds, then maintain a low level for L microseconds before returning to a high level to send the digital 1; maintain a high level for Y microseconds, then maintain a low level for L microseconds before returning to a high level to send the digital 0, thereby generating the response signal conforming to a custom single-wire communication protocol, wherein X is greater than L, Y is greater than L, and X is not equal to Y.

[0011] Optionally, the data storage and processing module is further configured to sign the received verification signal according to the cryptographic algorithm matched by the battery's built-in security chip and output the response data to the signal modulation circuit; the data processing and verification module is further configured to verify the signature information of the received response signal according to the matched cryptographic algorithm to determine the authenticity of the battery.

[0012] Optionally, the verification device further includes a display module, which is electrically connected to the data processing and verification module and is used to display the result of the battery authenticity determination.

[0013] Optionally, the verification device is also used to monitor the level of the communication line and to indicate a communication timeout when the communication line remains at a high level for a threshold time.

[0014] Optionally, the ground wires of the verification device and the battery's built-in security chip are interconnected.

[0015] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0016] In this embodiment, a single communication line is used to connect the verification device and the battery's built-in safety chip. The power module, data processing and verification module, and signal generation circuit in the verification device work in conjunction with the power management module, data storage and processing module, and signal modulation circuit in the battery's built-in safety chip. This allows for simple and reliable bidirectional communication between the verification and response signals, accurately determining the authenticity of the battery and improving the accuracy, reliability, and security of battery anti-counterfeiting. The verification and response signals communicate bidirectionally via a single communication line, and the high-level signal is held for a longer duration than the low-level signal. This allows the power management module to extract and store sufficient electrical energy from the communication line to stably power the battery's built-in safety chip during data transmission. The built-in safety chip requires no additional complex circuitry or independent power supply, making it easy to integrate into various types of batteries without significantly impacting the battery's original structure or manufacturing process. Therefore, while ensuring high battery anti-counterfeiting security, the design and manufacturing costs of the battery and the built-in safety chip are effectively reduced. Furthermore, this battery system based on single-line communication can quickly complete battery anti-counterfeiting verification without additional barcode scanning equipment, improving the convenience of anti-counterfeiting verification. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a battery system for anti-counterfeiting authentication based on single-wire communication, provided in an embodiment of this disclosure.

[0019] Figure 2 This is a timing diagram of a custom single-line communication protocol provided in an embodiment of this disclosure;

[0020] Figure 3 This is a timing diagram for sending two consecutive bits of data provided in an embodiment of this disclosure.

[0021] Figure label:

[0022] 100: Verification device; 101: Power module; 102: Data processing and verification module; 103: Signal generation circuit; 104: First communication interface; 200: Battery built-in safety chip; 201: Data storage and processing module; 202: Signal modulation circuit; 203: Second communication interface; 204: Power supply port; 210: Power management module; 211: Current protection submodule; 212: Energy storage submodule; 300: Communication line. Detailed Implementation

[0023] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. “Up,” “down,” “left,” “right,” etc., are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes. A and / or B indicates the presence of three cases: A, B, and A and B.

[0024] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of a battery system for anti-counterfeiting authentication based on single-wire communication, provided in an embodiment of this disclosure. Figure 1 As shown, the battery system for anti-counterfeiting authentication based on single-wire communication includes a verification device 100 and a battery-embedded security chip 200 connected via a single communication line 300.

[0026] The verification device 100 includes a power supply module 101, a data processing and verification module 102, and a signal generation circuit 103. The power supply module 101 supplies power to the verification device 100. The data processing and verification module 102 outputs verification data to the signal generation circuit 103 and can determine the authenticity of the battery based on the received response signal. The signal generation circuit 103 generates a verification signal based on the verification data. The battery-embedded safety chip 200 includes a power management module 210, a data storage and processing module 201, and a signal modulation circuit 202. The power management module 210 extracts and stores electrical energy from the communication line 300 to power the battery-embedded safety chip 200. The data storage and processing module 201 stores battery anti-counterfeiting data and can output response data to the signal modulation circuit 202 based on the received verification signal. The signal modulation circuit 202 modulates the response data into a response signal. The communication line 300 enables bidirectional communication between the verification signal and the response signal. The high-level signal in both the verification signal and the response signal is held for a longer period than the low-level signal.

[0027] In this embodiment, by using a single communication line 300 to connect the verification device 100 and the battery-embedded safety chip 200, the power module 101, data processing and verification module 102, and signal generation circuit 103 in the verification device 100 cooperate with the power management module 210, data storage and processing module 201, and signal modulation circuit 202 in the battery-embedded safety chip 200 to simply and reliably realize bidirectional communication between verification signals and response signals, thereby accurately determining the authenticity of the battery and improving the accuracy, reliability, and security of battery anti-counterfeiting. The verification and response signals achieve bidirectional communication via a single communication line 300. The high-level signal in both signals is held for a longer duration than the low-level signal. This allows the power management module 210 to extract and store sufficient electrical energy from the communication line 300 to stably power the battery's built-in safety chip 200 during data transmission. The built-in safety chip 200 requires no additional complex circuitry or independent power supply, making it easy to integrate into various battery types without significantly impacting the battery's original structure or manufacturing process. Therefore, it effectively reduces the design and manufacturing costs of the battery and the built-in safety chip while maintaining high anti-counterfeiting security. Furthermore, this battery system based on single-wire communication enables rapid anti-counterfeiting verification without the need for additional scanning equipment, improving the convenience of the verification process.

[0028] Optionally, the verification device 100 further includes a first communication interface 104, which is electrically connected to the data processing and verification module 102 and the signal generation circuit 103. The battery-embedded safety chip 200 also includes a second communication interface 203, which is electrically connected to the data storage and processing module 201 and the signal modulation circuit 202. The first communication interface 104 and the second communication interface 203 are connected via a communication line 300. The first communication interface 104 can transmit verification signals from the verification device 100 to the communication line 300 and can receive response signals transmitted from the communication line 300. The second communication interface 203 can receive verification signals transmitted from the communication line 300 and can transmit response signals from the battery-embedded safety chip 200 to the communication line 300, thereby better realizing bidirectional communication between verification signals and response signals.

[0029] Figure 2 This is a timing diagram of a custom single-wire communication protocol provided in an embodiment of this disclosure. See also... Figure 1 and Figure 2 For example, the signal generation circuit 103 is further configured to, based on the verification data, maintain a low level for W microseconds before transmitting each byte as a start; maintain a high level for X microseconds, then maintain a low level for L microseconds before returning to a high level to send the digital 1; maintain a high level for Y microseconds, then maintain a low level for L microseconds before returning to a high level to send the digital 0, thereby generating a verification signal conforming to a custom single-wire communication protocol, wherein X is greater than L, Y is greater than L, and X is not equal to Y.

[0030] For example, the signal modulation circuit 202 is further configured to, based on the response data, maintain a low level for W microseconds before transmitting each byte as a start; maintain a high level for X microseconds, then maintain a low level for L microseconds before returning to a high level to transmit the digital 1; maintain a high level for Y microseconds, then maintain a low level for L microseconds before returning to a high level to transmit the digital 0, thereby generating an response signal conforming to a custom single-wire communication protocol, wherein X is greater than L, Y is greater than L, and X is not equal to Y.

[0031] In other words, both the verification signal and the response signal conform to the same custom single-wire communication protocol. This not only simplifies the single-wire communication method but also ensures that the power management module 210 extracts and stores sufficient electrical energy from the communication line 300 to stably power the battery-embedded safety chip 200 during data transmission. Because the duration of high and low levels differs significantly when transmitting digital 1s and 0s, and the high level is maintained for a longer period, even with a certain clock deviation during communication, there is still sufficient time to identify and process the signal. Therefore, the timing can be guaranteed to have a high clock fault tolerance rate for communication, reducing misjudgments and verification failures caused by communication faults, and improving the stability and reliability of communication during the entire battery system's anti-counterfeiting verification process. For example, when there is a slight error in the clocks of the verification device 100 and the battery-embedded safety chip 200, as long as the error range is within a certain limit, the battery-embedded safety chip 200 can still accurately distinguish the signal formats of digital 1s and 0s, and will not cause data parsing errors due to clock deviations.

[0032] For example, the verification device 100 is also used to keep the communication line 300 at a high level in the idle state. Since the verification device 100 is the active initiator of communication during battery anti-counterfeiting verification, the battery's built-in safety chip plays a passive response role. In the idle state, where there is no bidirectional communication of verification and response signals, keeping the communication line 300 at a high level allows the power management module 210 to effectively store energy, which is beneficial for achieving stable power supply to the battery's built-in safety chip 200.

[0033] Figure 3 This is a timing diagram for sending two consecutive bits of data provided in an embodiment of this disclosure. Figure 3 The diagram illustrates the timing for transmitting two consecutive bits of data (0 and 0), two consecutive bits of data (0 and 1), two consecutive bits of data (1 and 0), and two consecutive bits of data (1 and 1). It should be noted that during data transmission, the low level is maintained for only W microseconds before transmitting each byte (8 bits of data), not before each individual bit of data.

[0034] In one possible implementation, W=3, X=12, Y=24, and L=3. In other embodiments, the values ​​of W, X, Y, and L can be adjusted according to actual needs, as long as the above-mentioned size relationship is satisfied; this disclosure does not impose any restrictions on this.

[0035] like Figure 1As shown, optionally, the power management module 210 includes a current protection submodule 211 and an energy storage submodule 212. The first terminal of the current protection submodule 211 is connected to the communication line 300. The first terminal of the energy storage submodule 212 is connected to the power supply port 204 of the battery-embedded safety chip 200 and the second terminal of the current protection submodule 211, and the second terminal of the energy storage submodule 212 is grounded. The current protection submodule 211 allows current to flow from its first terminal to its second terminal when the communication line 300 transmits a verification signal, and blocks current when the communication line 300 transmits a response signal. By setting up the current protection submodule 211 and the energy storage submodule 212, the level change of the communication line 300 can be sensitively detected. During the high level period, electrical energy can be continuously obtained from the communication line 300 and stored in the energy storage submodule 212, providing stable power support for the various functional modules of the battery built-in safety chip 200. The current protection submodule 211 can prevent the current from flowing backward when the battery built-in safety chip 200 transmits the response signal to the communication line 300, thereby protecting the circuit.

[0036] For example, the current protection submodule 211 includes a unidirectional diode, with the anode of the unidirectional diode being the first terminal of the current protection submodule 211 and the cathode of the unidirectional diode being the second terminal of the current protection submodule 211. The energy storage submodule 212 includes a capacitor.

[0037] For example, the battery-embedded security chip 200 can be a security chip with functions such as secure storage, digital signature, and encryption / decryption.

[0038] For example, the battery-embedded security chip 200 is also used to automatically enter a power-saving mode when no verification signal is received for a period of time, thereby reducing power consumption. This reduces energy consumption when there is no verification requirement, which helps extend the lifespan of the battery-embedded security chip 200 and improves the overall performance and battery life of the battery system based on single-wire communication for anti-counterfeiting authentication.

[0039] Optionally, the data storage and processing module 201 is further configured to sign the received verification signal according to the cryptographic algorithm matched by the battery's built-in security chip 200 and output response data to the signal modulation circuit 202. The data processing and verification module 102 is further configured to verify the signature information of the received response signal according to the matched cryptographic algorithm to determine the authenticity of the battery. This can effectively improve the accuracy, reliability, and security of battery anti-counterfeiting.

[0040] For example, the verification device 100 also includes a display module, which is electrically connected to the data processing and verification module 102 and is used to display the result of the battery authenticity determination.

[0041] Optionally, the verification device 100 is also used to monitor the voltage level of the communication line 300, and to indicate a communication timeout when the communication line 300 remains at a high level for a threshold time. This ensures the reliability and stability of the battery anti-counterfeiting verification.

[0042] For example, the threshold time can be 40 microseconds to 50 microseconds. For instance, the verification device 100 can monitor the level of the communication line 300 and, when the communication line 300 remains at a high level for 50 microseconds, indicate a communication timeout, initiate an error handling procedure, indicate verification failure, or attempt to resend the verification command.

[0043] Optionally, the verification device 100 is grounded via a ground wire, and the battery-embedded safety chip 200 is grounded via a ground wire.

[0044] In one possible implementation, the ground wires of the verification device 100 and the battery-embedded safety chip 200 are interconnected. This allows a stable reference potential to be formed.

[0045] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A battery system for anti-counterfeiting authentication based on single-wire communication, characterized in that, This includes verification equipment connected via a single communication line and a battery-embedded security chip. The verification device includes a power module, a data processing and verification module, and a signal generation circuit. The power module is used to supply power to the verification device. The data processing and verification module is used to output verification data to the signal generation circuit and can determine the authenticity of the battery based on the received response signal. The signal generation circuit is used to generate a verification signal based on the verification data. The battery-embedded safety chip includes a power management module, a data storage and processing module, and a signal modulation circuit. The power management module is used to extract and store electrical energy from the communication line to power the battery-embedded safety chip. The data storage and processing module is used to store battery anti-counterfeiting data and can output response data to the signal modulation circuit according to the received verification signal. The signal modulation circuit is used to modulate the response data into the response signal. The communication line is used to realize bidirectional communication between the verification signal and the response signal, wherein the high level of the verification signal and the response signal is held for a longer period than the low level.

2. The battery system for anti-counterfeiting authentication based on single-wire communication according to claim 1, characterized in that, The verification device further includes a first communication interface, which is electrically connected to the data processing and verification module and the signal generation circuit. The battery-embedded safety chip also includes a second communication interface, which is electrically connected to the data storage and processing module and the signal modulation circuit. The first communication interface and the second communication interface are connected via the communication line.

3. The battery system for anti-counterfeiting authentication based on single-wire communication according to claim 1, characterized in that, The power management module includes a current protection submodule and an energy storage submodule. The first end of the current protection submodule is connected to the communication line; The first end of the energy storage submodule is connected to the power supply port of the battery's built-in safety chip and the second end of the current protection submodule, and the second end of the energy storage submodule is grounded. The current protection submodule is used to allow current to flow from the first end of the current protection submodule to the second end when the communication line transmits a verification signal, and to block current when the communication line transmits an acknowledgment signal.

4. The battery system for anti-counterfeiting authentication based on single-wire communication according to claim 3, characterized in that, The current protection submodule includes a unidirectional diode, the anode of which is the first terminal of the current protection submodule, and the cathode of which is the second terminal of the current protection submodule. The energy storage submodule includes a capacitor.

5. The battery system for anti-counterfeiting authentication based on single-wire communication according to claim 1, characterized in that, The signal generation circuit is further configured to, based on the verification data, maintain a low level for W microseconds before transmitting each byte as a start; maintain a high level for X microseconds, then maintain a low level for L microseconds before restoring a high level to send the digital 1; maintain a high level for Y microseconds, then maintain a low level for L microseconds before restoring a high level to send the digital 0, thereby generating the verification signal conforming to the custom single-wire communication protocol, wherein X is greater than L, Y is greater than L, and X is not equal to Y.

6. The battery system for anti-counterfeiting authentication based on single-wire communication according to claim 1, characterized in that, The signal modulation circuit is further configured to, based on the response data, maintain a low level for W microseconds before transmitting each byte as a start; maintain a high level for X microseconds, then maintain a low level for L microseconds before returning to a high level to send the digital 1; maintain a high level for Y microseconds, then maintain a low level for L microseconds before returning to a high level to send the digital 0, thereby generating the response signal conforming to the custom single-wire communication protocol, wherein X is greater than L, Y is greater than L, and X is not equal to Y.

7. The battery system for anti-counterfeiting authentication based on single-wire communication according to any one of claims 1 to 6, characterized in that, The data storage and processing module is also used to sign the received verification signal according to the cryptographic algorithm matched by the battery's built-in security chip and output the response data to the signal modulation circuit; The data processing and verification module is also used to verify the signature information of the received response signal according to the matching cryptographic algorithm in order to determine the authenticity of the battery.

8. The battery system for anti-counterfeiting authentication based on single-wire communication according to claim 7, characterized in that, The verification device also includes a display module, which is electrically connected to the data processing and verification module and is used to display the result of the battery authenticity determination.

9. The battery system for anti-counterfeiting authentication based on single-wire communication according to any one of claims 1 to 6 and claim 8, characterized in that, The verification device is also used to monitor the voltage level of the communication line and to indicate a communication timeout when the communication line remains at a high voltage level for a threshold time.

10. The battery system for anti-counterfeiting authentication based on single-wire communication according to any one of claims 1 to 6 and claim 8, characterized in that, The verification device and the ground wire of the battery's built-in security chip are interconnected.

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