An encryption authentication chip, a battery pack, a power supply control architecture and an electronic device

Abstract

The technical scheme of the present application provides an encryption authentication chip, a battery pack, a power supply control architecture and an electronic device. The encryption authentication chip is arranged in the battery pack. A power supply pin of the encryption authentication chip is connected to the positive electrode of the battery cell in the battery pack. A grounding pin of the encryption authentication chip is connected to the negative electrode of the battery cell in the battery pack. The encryption authentication chip comprises a power supply unit, a single-wire communication unit, a logic control unit, an encryption authentication unit and an online address editing unit. The present application supplies power to the power supply unit in the encryption authentication chip through the battery cell, greatly improving the stability of the normal operation of the encryption authentication chip. On the basis of improving the power supply stability, because the online address editing unit will automatically modify the first address to the original address after the power supply unit is powered off and the power supply is restored, the electronic product can accurately detect whether the battery cell in the battery pack is replaced by whether the new address modified by the online address editing unit can be used for communication after the electronic product is shipped.

Description

Technical Field

[0001] This invention relates to the field of batteries, and more particularly to an encryption authentication chip, a battery pack, a power control architecture, and an electronic device. Background Technology

[0002] With social progress and technological development, a wide variety of electronic products have emerged, and more and more of these products require identification tagging capabilities. For example, in recent years, the European Union has introduced a new battery law requiring the manufacturer to be responsible for recycling the product. This significantly increases the need for encrypted authentication chips with encryption functions to be installed in battery packs.

[0003] Then, existing encryption authentication chips cannot accurately detect if the battery cells in the battery pack have been replaced.

[0004] Therefore, providing an encrypted authentication chip that can accurately detect battery cell replacement has become a technical problem that the industry urgently needs to solve. Summary of the Invention

[0005] The technical problem solved by this invention is to provide an encryption authentication chip, a battery pack, a power control architecture, and an electronic device, thereby solving the problem of accurate detection of battery cell replacement.

[0006] To solve the above technical problems, the present invention provides an encryption authentication chip disposed within a battery pack. The power supply pin of the encryption authentication chip is connected to the positive terminal of a battery cell within the battery pack, and the ground pin of the encryption authentication chip is connected to the negative terminal of a battery cell within the battery pack. The encryption authentication chip includes:

[0007] A power supply unit, the input terminal of which is connected to the power supply pin of the encryption and authentication chip, is used to output an internal power supply voltage under the power supply of the battery cells in the battery pack;

[0008] A single-wire communication unit, wherein the single-wire communication unit is used to perform single-wire communication with an external system processor through a communication pin on the chip;

[0009] A logic control unit is configured to output a first extraction signal and a second extraction signal based on an externally input encryption and authentication signal, wherein the encryption and authentication signal is input by an external system processor through the single-wire communication unit.

[0010] An encryption authentication unit is configured to output a first electronic tag signal based on the first extracted signal. The encryption authentication unit is also configured to output a first encryption calibration signal based on the second extracted signal. Both the first electronic tag signal and the first encryption calibration signal are output externally by the single-wire communication unit through the communication pin.

[0011] An online address editing unit is provided, which is used to edit the single-line communication address of the encryption authentication chip to a first address according to the address editing signal input by the external input during the factory assembly stage of the battery pack. The online address editing unit is also used to automatically modify the first address back to the original address after the power supply unit loses power and resumes normal power supply. The original address is different from the first address.

[0012] Optionally, the power supply unit is specifically a nanoampere-level power supply voltage source.

[0013] Optionally, the nano-ampere power supply voltage source can operate with a working current of less than 100nA and a working voltage of greater than or equal to 1.5V in low-power mode. The low-power mode of the nano-ampere power supply voltage source can ensure that the first address of the online address editing unit is maintained because there is no power loss.

[0014] Optionally, the first address is specifically used to characterize a first parameter of the encryption authentication chip.

[0015] Optionally, the first parameter includes the oscillation frequency of the encryption authentication chip.

[0016] Optionally, the logic control unit is specifically an internal state machine logic circuit.

[0017] Accordingly, the technical solution of the present invention also provides a battery pack, including: a thermistor, a battery cell, a battery protection unit, and the encryption authentication chip provided by the technical solution of the present invention;

[0018] The communication pin of the encryption authentication chip is connected to the communication pin of the battery pack, and communicates with the external system processor via the communication pin of the battery pack. The power supply pin of the encryption authentication chip is connected to the positive terminal of the battery cell, and the ground pin of the encryption authentication chip is connected to the negative terminal of the battery cell.

[0019] The first end of the thermistor is connected to the temperature detection pin of the battery pack, and the second end of the thermistor is also connected to the negative terminal of the battery cell.

[0020] The positive terminal of the battery cell is connected to the positive pin of the battery pack, and the negative terminal of the battery cell is connected to the first terminal of the battery protection unit;

[0021] The second end of the battery protection unit is connected to the positive terminal of the battery cell, and the third end of the battery protection unit is connected to the negative terminal pin of the battery pack. The battery protection unit is used to cut off the external power supply of the battery pack when the voltage of the battery cell is lower than a first threshold.

[0022] Optionally, the battery protection unit includes a battery protection chip, a first NMOS transistor, a second NMOS transistor, a first resistor, and a second resistor; the power supply pin of the battery protection unit is connected to the second end of the first resistor, the first end of the first resistor serves as the second end of the battery protection unit, the ground pin of the battery protection chip serves as the first end of the battery protection unit, the input pin of the battery protection chip is connected to the second end of the second resistor, the first end of the second resistor serves as the third end of the battery protection unit, the first control pin of the battery protection chip is connected to the gate of the first NMOS transistor, the second control pin of the battery protection chip is connected to the gate of the second NMOS transistor, the source of the first NMOS transistor is connected to the ground pin of the battery protection chip, the drain of the first NMOS transistor is connected to the drain of the second NMOS transistor, and the source of the second NMOS transistor is connected to the first end of the second resistor.

[0023] Accordingly, the technical solution of the present invention also provides a power control architecture, including: the battery pack and system control motherboard provided by the technical solution of the present invention;

[0024] The system control motherboard includes a system processor and a power management chip. The input / output pins of the system processor are connected to the communication pins of the battery pack. The system processor is used to perform single-wire communication with the encryption and authentication chip and output the encryption and authentication signal. The temperature detection pin of the power management chip is connected to the temperature detection pin of the battery pack. The power management chip is used to detect the temperature of the battery pack based on the voltage of the thermistor. The power pin of the system control motherboard is connected to the positive pin of the battery pack, and the ground pin of the system control motherboard is connected to the negative pin of the battery pack.

[0025] Accordingly, the present invention also provides an electronic device, including the power control architecture provided by the present invention.

[0026] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects:

[0027] In the encryption authentication solution of this invention, the power supply pin of the encryption authentication chip is connected to the positive terminal of the battery cell inside the battery pack, and the ground pin of the encryption authentication chip is connected to the negative terminal of the battery cell inside the battery pack. The power supply unit inside the encryption authentication chip, which is used for internal power supply, is connected to the power supply pin of the encryption authentication chip. Power is supplied to the power supply unit inside the encryption authentication chip through the battery cell, which greatly improves the stability of the power supply unit. Based on the improved power supply stability, because the online address editing unit automatically modifies the first address to the original address after the power supply unit loses power and the power supply voltage is restored, the ability to communicate using the first address set by the online address editing unit during the factory assembly stage of the electronic pack can accurately detect whether the battery cell inside the battery pack has been replaced.

[0028] Furthermore, by setting the power supply unit to a nanoampere-level power supply voltage source, and the operating current of the nanoampere-level power supply voltage source in low power mode is less than 100nA, and the operating voltage is greater than or equal to 1.5V, the nanoampere-level power supply voltage source can maintain the first address in the online address editing unit without power loss and change under extremely low power consumption, which greatly improves the stability of the power supply unit and further improves the accuracy of detecting whether the battery cells in the battery pack have been replaced. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a sample of an encryption authentication chip.

[0030] Figure 2 This is a schematic diagram of the module structure of the encryption and authentication chip provided by the technical solution of this invention.

[0031] Figure 3 A circuit diagram of the battery pack provided for the technical solution of this invention;

[0032] Figure 4 A circuit diagram of the battery pack provided for the technical solution of this invention;

[0033] Figure 5 The circuit structure diagram of the power control architecture provided for the technical solution of the present invention. Detailed Implementation

[0034] As described in the background section, existing encryption authentication chips cannot accurately detect the replacement of battery cells within a battery pack. A detailed explanation follows with reference to the accompanying drawings.

[0035] Figure 1 This is a schematic diagram of an embodiment of an encryption authentication chip.

[0036] Please refer to Figure 1 , Figure 1The illustrated encryption authentication chip embodiment includes: a single-wire communication unit, a logic control unit, an encryption authentication unit, a hardware address unit, a flash memory counter, and capacitors and diodes for power supply. The single-wire communication unit is used for single-wire communication with an external system processor via a communication pin on the chip. When the external system processor needs to perform encryption authentication on the battery pack containing the encryption authentication chip, it outputs an encryption authentication signal to the logic control unit through the single-wire communication unit. The logic control unit, based on the externally input encryption authentication signal, extracts the electronic tag and encryption calibration code stored in the encryption authentication unit and outputs the electronic tag and encryption calibration code externally through the single-wire communication unit. The external system processor completes the encryption authentication of the battery pack by outputting the electronic tag and encryption calibration code through the encryption authentication chip. A high level on the communication pin of the encryption authentication chip, or a logic high level on the communication pin during communication, can charge the built-in capacitor through the built-in diode, thereby supplying power to the chip's internal components through the capacitor.

[0037] To prevent the battery cells in the battery pack from being replaced with counterfeit cells, the flash memory counter counts the remaining number of uses for each cell. For example, the flash memory counter initially stores a decimal number of 500, meaning the remaining number of uses for each cell is 500. Each time the external system processor detects that the battery pack has completed a charge-discharge cycle, it notifies the flash memory counter to decrement by 1 via the single-wire communication unit. The battery pack will fail the external system processor's encryption authentication when the stored value in the flash memory counter falls below a set threshold, for example, a threshold of 10. Therefore, when the stored value in the flash memory counter falls below the set threshold, even if the battery cells in the battery pack are removed and replaced with counterfeit cells, the battery pack will fail the external system processor's encryption authentication, triggering an alarm and restricting the battery pack's functionality. However, the problem with the above embodiment is that before the stored value in the flash memory counter falls below the set threshold, the battery pack with the counterfeit cells can still undergo normal encryption authentication, thus completing the remaining charge-discharge cycles and being used normally in the electronic product.

[0038] In view of this, the technical solution of the present invention provides a new encryption authentication chip, which is disposed in the battery pack. The power supply pin of the encryption authentication chip is connected to the positive terminal of the battery cell in the battery pack, and the ground pin of the encryption authentication chip is connected to the negative terminal of the battery cell in the battery pack.

[0039] in, Figure 2 This is a schematic diagram of the module structure of the encryption and authentication chip provided by the technical solution of this invention.

[0040] Please refer to Figure 2 The encryption authentication chip provided by the technical solution of this invention includes:

[0041] Power supply unit 100, the input terminal of which is connected to the power supply pin VDD of the encryption and authentication chip, the power supply unit 100 is used to output the internal power supply voltage InnerVDD under the power supply of the battery cells in the battery pack;

[0042] A single-wire communication unit 20 is used to perform single-wire communication with an external system processor through the communication pin CMD on the chip.

[0043] The logic control unit 30 is used to output a first extraction signal and a second extraction signal based on an externally input encryption and authentication signal, wherein the encryption and authentication signal is input by an external system processor through the single-wire communication unit 20.

[0044] The encryption and authentication unit 40 is used to output a first electronic tag signal according to the first extraction signal. The encryption and authentication unit 40 is also used to output a first encryption calibration signal according to the second extraction signal. The first electronic tag signal and the first encryption calibration signal are both output by the single-wire communication unit 20 through the communication pin CMD.

[0045] The online address editing unit 50 is used to edit the single-line communication address of the encryption authentication chip to a first address according to the externally input address editing signal during the factory assembly stage when the battery pack and system motherboard of the electronic product are assembled together. The online address editing unit 50 is also used to automatically modify the first address back to the original address after the power supply unit 100 stops and re-outputs the internal power supply voltage Inner VDD, wherein the original address is different from the first address.

[0046] Through the above-mentioned technical means, the technical solution of the present invention can accurately detect whether the battery cells in the battery pack have been replaced. The specific principle is as follows:

[0047] Because the power supply pin VDD of the encryption authentication chip is connected to the positive terminal of the battery cell inside the battery pack, and the ground pin GND of the encryption authentication chip is connected to the negative terminal of the battery cell inside the battery pack, the power supply unit 100 inside the encryption authentication chip, used for internal power supply, is connected to the power supply pin VDD of the encryption authentication chip. Compared with the prior art, which uses the high level or logic high level of the communication pin CMD to charge the built-in capacitor to achieve internal power supply of the chip, the present invention directly provides stable power supply to the power supply unit 100 through the battery cell. Unless the battery cell is disassembled or damaged, the power supply unit 100 will be able to continuously supply power to other working units inside the chip. Among them, the situation where the battery cell is damaged will directly trigger the alarm of the alarm battery pack, which is not considered here. At the same time, the single-wire communication address in the online address editing unit 50 will be edited into the first address by the system processor in the external system motherboard through the address editing signal input by the single-wire communication during the factory assembly stage when the battery pack and the external system motherboard are assembled together in the electronic product. After the electronic product leaves the factory, as long as the encryption authentication chip does not lose power, the single-line communication address of the online address editing unit 50 will remain at the first address. If the battery cells in the battery pack are replaced with counterfeit cells, the existing battery cells must be disassembled and the counterfeit cells reassembled, causing the power supply unit 100 to experience a power outage and re-powering, i.e., the encryption authentication chip's power outage and re-powering. After the encryption authentication chip is powered off and then powered on again, the first address stored in the online address editing unit 50 will be automatically modified to the original address, and the original address and the first address will not be the same. This prevents the external system processor from using the original first address to perform single-line communication with the encryption authentication chip, thus accurately detecting that the battery cells in the battery pack have been replaced.

[0048] It should be noted that the external system processor directly communicates with the encryption and authentication chip using the first address. If the communication fails, there is no need to check whether it is a new address, because if the address is incorrect, there is no way to check it, and if the address is correct, there is no need to check it either.

[0049] To make the above-mentioned objectives, features and beneficial effects of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0050] Please refer to Figure 2In one specific implementation, the power supply unit 100 is a nano-ampere power supply voltage source. The nano-ampere power supply voltage source operates with a current less than 100nA in low-power mode and an operating voltage greater than or equal to 1.5V. The low-power mode of the nano-ampere power supply voltage source can maintain the online address editing unit without power loss. The beneficial effect of this implementation is that as long as the power consumption of the nano-ampere power supply voltage source is maintained at 100nA, the online address editing unit can be guaranteed not to lose power, thereby maintaining the single-line communication address of the encryption and authentication chip unchanged. Therefore, even with a small-capacity 100mAh battery cell, its voltage drops from 2V to 1.5V, and its discharge capacity is only 1% of its own capacity, i.e., the cell's discharge capacity is only 1mAh. Adding the power consumption of other components in the battery pack besides the encryption and authentication chip, for example, 100nA, the single-line communication address of the encryption and authentication chip can still be maintained normally for at least 5000 hours, thereby greatly improving the stability of the power supply unit when the battery cell is not removed. The operating current and operating voltage parameters of the nanoampere-level power supply voltage source in low-power mode are feasible parameters for actual products. The specific data can be adjusted according to different actual applications and are not limited here.

[0051] It's important to note that it's extremely rare for an electronic product's battery cell voltage to remain below 2V for over 5000 hours during manufacturing, transportation, and use. During manufacturing and transportation, the battery cell voltage within the battery pack is typically maintained at 3.7V or even higher. Furthermore, when the device is powered off or under specific transportation conditions, battery consumption is very low, such as a few µA or even lower. Therefore, even after several months of transportation, the battery cell voltage will not drop below 3V, let alone 2V. Under normal use, an electronic product will automatically shut down when the battery cell voltage drops below 3.3V. Normally, users will not recharge the device after it has automatically shut down. Even if the device automatically shuts down due to a voltage drop below 3.3V, users will likely recharge it within hours, days, or even weeks after shutdown. Therefore, under normal use, it is highly unlikely that the battery cell voltage will be over-discharged below 2V.

[0052] This demonstrates that, with the encryption and authentication chip provided in this embodiment of the invention, it is virtually impossible for a low-voltage power outage (i.e., the battery cell voltage dropping below 1.5V) to occur under normal use and transportation scenarios for electronic products. Of course, scenarios where electronic products are accidentally damaged or lost during transportation, or where they are intentionally or accidentally damaged, lost, or discarded during use, are not within the scope of this embodiment of the invention.

[0053] It should be noted that the original address is specifically the default device address.

[0054] In one specific implementation, the first address is used to characterize data related to the first parameter of the encryption authentication chip. The first address is obtained by performing some calculations on the first parameter of the encryption authentication chip, such as inverse operations, to avoid leaking parameter information about the encryption authentication chip. Specifically, the first parameter includes the oscillation frequency of the encryption authentication chip; of course, it may also include the bandgap reference voltage of the encryption authentication chip, etc., which can be set according to requirements and is not limited here.

[0055] In one specific implementation, the logic control unit is an internal state machine logic circuit.

[0056] In summary, the encryption authentication chip provided in this embodiment of the invention directly supplies power to the power supply unit within the encryption authentication chip via the battery cells within the battery pack, thereby improving the stability of the power supply to the power supply unit. Simultaneously, the online address editing unit automatically modifies the first address to the original address after the power supply unit stops and re-outputs the internal power supply voltage. This allows for precise detection of whether the battery cells within the battery pack have been replaced by checking whether the address in the online address editing unit matches the original address.

[0057] Furthermore, by setting the power supply unit to a nano-ampere power supply voltage source, and the nano-ampere power supply voltage source can operate with a working current of less than 100nA and a working voltage of greater than or equal to 1.5V in low-power mode, the low-power mode of the nano-ampere power supply voltage source can maintain the device address modified by the online address editing unit without power loss, further improving the stability of the power supply unit, thereby greatly improving the accuracy of detecting whether the battery cells in the battery pack have been replaced.

[0058] The present invention also provides a new battery pack.

[0059] in, Figure 3 The circuit structure diagram of the battery pack provided by the technical solution of the present invention.

[0060] Please refer to Figure 3 The battery pack provided by the technical solution of the present invention includes: a thermistor Rntc, a battery cell B1, a battery protection unit 120, and the encryption and authentication chip 110 provided by the technical solution of the present invention;

[0061] The communication pin CMD of the encryption authentication chip 110 is connected to the communication pin CMD of the battery pack, and performs single-wire communication with the external system processor from the communication pin CMD of the battery pack. The power supply pin VDD of the encryption authentication chip 110 is connected to the positive terminal of the battery cell B1, and the ground pin GND of the encryption authentication chip 110 is connected to the negative terminal of the battery cell B1.

[0062] The first end of the thermistor Rntc is connected to the temperature detection pin NTC of the battery pack, and the second end of the thermistor Rntc is also connected to the negative terminal of the battery cell B1.

[0063] The positive terminal of cell B1 is connected to the positive pin PACK+ of the battery pack, and the negative terminal of cell B1 is connected to the first terminal of the battery protection unit 120.

[0064] The second end of the battery protection unit 120 is connected to the positive terminal of the battery cell B1, and the third end of the battery protection unit 120 is connected to the negative terminal pin PACK- of the battery pack. The battery protection unit 120 is used to cut off the external power supply of the battery pack when the voltage of the battery cell B1 is lower than a first threshold.

[0065] The above technical solution connects the power supply pin VDD of the encryption authentication chip 110 to the positive terminal of the battery cell B1, and connects the ground pin GND of the encryption authentication chip 110 to the negative terminal of the battery cell B1, so that the battery cell B1 is directly connected to the encryption authentication chip 110, thus ensuring the stability of the normal operation of the encryption authentication chip 110.

[0066] In one specific implementation, the temperature detection pin is an NTC pin.

[0067] Figure 4 The circuit structure diagram of the battery pack provided by the technical solution of the present invention.

[0068] Please refer to Figure 4In one specific embodiment, the battery protection unit 120 includes a battery protection chip 121, a first NMOS transistor M1, a second NMOS transistor M2, a first resistor R1, and a second resistor R2. The power supply pin VDD of the battery protection unit 120 is connected to the second end of the first resistor R1, and the first end of the first resistor R1 serves as the second end of the battery protection unit 120. The ground pin GND of the battery protection chip 121 serves as the first end of the battery protection unit 120. The input pin of the battery protection chip 121 is connected to the second end of the second resistor R2, and the first end of the second resistor R2 serves as the third end of the battery protection unit 120. The first control pin of the battery protection chip 121 is connected to the gate of the first NMOS transistor M1, and the second control pin of the battery protection chip 121 is connected to the gate of the second NMOS transistor M2. The source of the first NMOS transistor M1 is connected to the ground pin GND of the battery protection chip 121, the drain of the first NMOS transistor M1 is connected to the drain of the second NMOS transistor M2, and the source of the second NMOS transistor M2 is connected to the first end of the second resistor R2.

[0069] It should be noted that, due to the presence of the battery protection chip 121 in the battery pack, this protection module will generally control the first NMOS transistor M1 and the second NMOS transistor M2 to turn off when the voltage of the battery cell B1 discharges to below 2.0V, thereby disconnecting the negative terminal of the battery cell B1 from the negative terminal pin PACK- of the battery pack. This prevents the battery cell B1 from discharging externally, greatly reducing the power loss of the battery cell B1 and maintaining the normal operation of the encryption and authentication chip 110.

[0070] In one specific implementation, the thermistor Rntc is an NTC resistor.

[0071] The technical solution of the present invention also provides a new power control architecture.

[0072] in, Figure 5 The circuit structure diagram of the power control architecture provided for the technical solution of the present invention.

[0073] Please refer to Figure 5 The power control architecture provided by the technical solution of the present invention includes: a system control motherboard 2 and a battery pack 1 provided by the technical solution of the present invention;

[0074] The system control motherboard 2 includes a system processor 210 and a power management chip 220. The input / output pins of the system processor 210 are connected to the communication pin CMD of the battery pack 1. The system processor 210 is used to perform single-wire communication with the encryption and authentication chip 110 and output the encryption and authentication signal. The temperature detection pin NTC of the power management chip 220 is connected to the temperature detection pin NTC of the battery pack 1. The power management chip 220 is used to detect the temperature of the battery pack 1 based on the voltage of the thermistor Rntc. The power pin of the system control motherboard 2 is connected to the positive pin PACK+ of the battery pack 1, and the ground pin GND of the system control motherboard 2 is connected to the negative pin PACK- of the battery pack 1.

[0075] The technical solution of the present invention also provides a new electronic device, including the power control architecture provided by the technical solution of the present invention.

[0076] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An encryption authentication chip, disposed within a battery pack, characterized in that, The power supply pin of the encryption authentication chip is connected to the positive terminal of the battery cell inside the battery pack, and the ground pin of the encryption authentication chip is connected to the negative terminal of the battery cell inside the battery pack. The encryption authentication chip includes: A power supply unit, the input terminal of which is connected to the power supply pin of the encryption and authentication chip, is used to output an internal power supply voltage under the power supply of the battery cells in the battery pack; A single-wire communication unit, wherein the single-wire communication unit is used to perform single-wire communication with an external system processor through a communication pin on the chip; A logic control unit is configured to output a first extraction signal and a second extraction signal based on an externally input encryption and authentication signal, wherein the encryption and authentication signal is input by an external system processor through the single-wire communication unit. An encryption authentication unit is configured to output a first electronic tag signal based on the first extracted signal. The encryption authentication unit is also configured to output a first encryption calibration signal based on the second extracted signal. Both the first electronic tag signal and the first encryption calibration signal are output externally by the single-wire communication unit through the communication pin. An online address editing unit is used to edit the single-line communication address of the encryption authentication chip to a first address according to an externally input address editing signal. The online address editing unit is also used to automatically modify the first address back to the original address after the power supply unit loses power and resumes normal power supply. The original address is different from the first address. The first address is used to detect whether the battery cells in the battery pack have been replaced based on whether it can communicate with the encryption authentication chip.

2. The encryption authentication chip according to claim 1, characterized in that, The power supply unit is specifically a nanoampere-level power supply voltage source.

3. The encryption authentication chip according to claim 2, characterized in that, The nano-ampere power supply voltage source has an operating current of less than 100nA and an operating voltage of greater than or equal to 1.5V in low-power mode. The low-power mode of the nano-ampere power supply voltage source can maintain the first address of the online address editing unit because it has not lost power.

4. The encryption authentication chip according to claim 1, characterized in that, The first address is specifically used to characterize data related to the first parameter of the encryption authentication chip.

5. The encryption authentication chip according to claim 4, characterized in that, The first parameter includes the oscillation frequency of the encryption authentication chip.

6. The encryption authentication chip according to claim 1, characterized in that, The logic control unit is specifically an internal state machine logic circuit.

7. A battery pack, characterized in that, include: Thermistor, battery cell, battery protection unit, and the encryption authentication chip according to any one of claims 1 to 6; The communication pin of the encryption authentication chip is connected to the communication pin of the battery pack, and communicates with the external system processor via the communication pin of the battery pack. The power supply pin of the encryption authentication chip is connected to the positive terminal of the battery cell, and the ground pin of the encryption authentication chip is connected to the negative terminal of the battery cell. The first end of the thermistor is connected to the temperature detection pin of the battery pack, and the second end of the thermistor is also connected to the negative terminal of the battery cell. The positive terminal of the battery cell is connected to the positive pin of the battery pack, and the negative terminal of the battery cell is connected to the first terminal of the battery protection unit; The second end of the battery protection unit is connected to the positive terminal of the battery cell, and the third end of the battery protection unit is connected to the negative terminal pin of the battery pack. The battery protection unit is used to cut off the external power supply of the battery pack when the voltage of the battery cell is lower than a first threshold.

8. The battery pack according to claim 7, characterized in that, The battery protection unit includes a battery protection chip, a first NMOS transistor, a second NMOS transistor, a first resistor, and a second resistor. The power supply pin of the battery protection unit is connected to the second terminal of the first resistor, and the first terminal of the first resistor serves as the second terminal of the battery protection unit. The ground pin of the battery protection chip serves as the first terminal of the battery protection unit. The input pin of the battery protection chip is connected to the second terminal of the second resistor, and the first terminal of the second resistor serves as the third terminal of the battery protection unit. The first control pin of the battery protection chip is connected to the gate of the first NMOS transistor, and the second control pin of the battery protection chip is connected to the gate of the second NMOS transistor. The source of the first NMOS transistor is connected to the ground pin of the battery protection chip, the drain of the first NMOS transistor is connected to the drain of the second NMOS transistor, and the source of the second NMOS transistor is connected to the first terminal of the second resistor.

9. A power supply control system, characterized in that, include: The system control motherboard and the battery pack as described in claim 7; The system control motherboard includes a system processor and a power management chip. The input / output pins of the system processor are connected to the communication pins of the battery pack. The system processor is used to perform single-wire communication with the encryption and authentication chip and output the encryption and authentication signal. The temperature detection pin of the power management chip is connected to the temperature detection pin of the battery pack. The power management chip is used to detect the temperature of the battery pack based on the voltage of the thermistor. The power pin of the system control motherboard is connected to the positive pin of the battery pack, and the ground pin of the system control motherboard is connected to the negative pin of the battery pack.

10. An electronic device, characterized in that, Includes the power control system as described in claim 9.

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