Anti-theft device and vehicle

Abstract

The utility model provides an anti-theft device and a vehicle. The anti-theft device comprises a constant electric interface used for being electrically connected with a constant electric power source of the vehicle. And the battery pack interface is electrically connected with the power supply end of the battery pack. And the interlocking interface is used for being electrically connected with a high-voltage interlocking interface of the battery pack. The NAND circuit comprises a first input end and a second input end. The first input end is electrically connected with the constant electric interface. And the second input end is electrically connected with the interlocking interface. And the input end of the first voltage converter is electrically connected with the battery pack interface. The enabling end of the first voltage converter is electrically connected to the output end of the NAND circuit. And the input end of the second voltage converter is electrically connected with the output end of the first voltage converter and the constant electric interface. And the enabling end of the second voltage converter is electrically connected with the output end of the first voltage converter. By arranging the NAND circuit, the anti-theft device does not need to detect a constant electric interface and an interlocking interface for a long time, the circuit structure is simplified, and the power consumption is reduced.

Description

Technical Field

[0001] This application relates to the technical field of battery pack anti-theft, and particularly to an anti-theft device and a vehicle. Background Art

[0002] With the continuous development of the industry, new energy vehicles have become gradually popular. The battery pack is the core heavy asset in new energy vehicles. Due to its high value, the battery pack is easily stolen. After the battery pack is removed from the vehicle, thieves will sell the whole battery pack or further disassemble it and sell the battery cells separately. Currently, a T-BOX (Telematics BOX) is provided on the vehicle, which can send positioning information. However, when the battery pack is detached from the vehicle, the T-BOX cannot give an alarm, and the user still has a relatively high risk of asset loss. Currently, although there are some anti-theft devices that can perform detachment alarm for the battery pack, their circuit structures are complex and the power consumption is high. Utility Model Content

[0003] This application provides an anti-theft device and a vehicle to solve related technical problems.

[0004] This application provides an anti-theft device, including:

[0005] A constant power interface for electrically connecting to the constant power supply of the vehicle;

[0006] A battery pack interface for electrically connecting to the power supply end of the battery pack of the vehicle;

[0007] An interlock interface for electrically connecting to the high-voltage interlock interface of the battery pack;

[0008] A NAND circuit including a first input terminal and a second input terminal, the first input terminal is electrically connected to the constant power interface, and the second input terminal is electrically connected to the interlock interface;

[0009] A first voltage converter, the input terminal of the first voltage converter is electrically connected to the battery pack interface, and the enable terminal of the first voltage converter is electrically connected to the output terminal of the NAND circuit;

[0010] A second voltage converter, the input terminal of the second voltage converter is electrically connected to the output terminal of the first voltage converter and the constant power interface; the enable terminal of the second voltage converter is electrically connected to the output terminal of the first voltage converter;

[0011] A positioning module for obtaining position information;

[0012] A communication module for sending position information;

[0013] A processor, the power supply terminal of the processor is electrically connected to the output terminal of the second voltage converter, and the processor is electrically connected to the positioning module and the communication module respectively, and is configured to send the position information to the communication module when the second voltage converter supplies power to the processor.

[0014] Further, the first input terminal is electrically connected to the processor and is configured to detect the signal of the vehicle's constant power supply; the second input terminal is electrically connected to the processor and is configured to detect the high-voltage interlock signal of the battery pack.

[0015] Further, it further includes a wake-up module, the wake-up module is electrically connected to the first input terminal and the second input terminal; the output terminal of the wake-up module is electrically connected to the enable terminal of the second voltage converter; when the signal of at least one of the first input terminal and the second input terminal is disconnected, the wake-up module can output a signal to enable the second voltage converter.

[0016] Further, it further includes a timing module, the output terminal of the timing module is electrically connected to the enable terminal of the second voltage converter to periodically enable the second voltage converter.

[0017] Further, it further includes a photosensitive sensor, the photosensitive sensor is electrically connected to the enable terminal of the second voltage converter, when the battery pack is disassembled, the photosensitive sensor converts the optical signal into an electrical signal to enable the second voltage converter.

[0018] Further, it further includes a communication module for information interaction with the BMS of the battery pack, the communication module is connected to the processor through a transmission bus; the output terminal of the communication module is electrically connected to the enable terminal of the second voltage converter.

[0019] Further, it further includes an output module, the input terminal of the output module is electrically connected to the processor so that the processor can control the output module to supply power externally.

[0020] Further, the positioning module and the communication module are integrally provided.

[0021] Further, the communication module includes an antenna, and the antenna is installed inside the battery pack.

[0022] This application also provides a vehicle, including: a battery pack and the above anti-theft device.

[0023] The technical solution provided by this application can at least achieve the following technical effects: By setting up a NAND circuit, the anti-theft device uses the change of the level to wake up the power supply of the processor, without the need to detect the constant power interface and the interlock interface for a long time. While having the function of alarming when the battery pack is detached, the circuit structure is simplified and the power consumption of the anti-theft device is reduced.

[0024] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments that conform to this specification, and are used together with the specification to explain the principles of this specification.

[0026] Figure 1 is a schematic block diagram of an anti-theft device in an exemplary embodiment of this application;

[0027] Figure 2 is a circuit diagram of an anti-theft device in an exemplary embodiment of this application;

[0028] Figure 3 is a schematic structural diagram of a vehicle in an exemplary embodiment of this application.

[0029] Description of the reference numerals in the drawings: anti-theft device, 1; constant power interface, 11; battery pack interface, 12; interlock interface, 13; spare interface, 14; NAND circuit, 20; first input terminal, 21; second input terminal, 22; first voltage converter, 31; second voltage converter, 32; processor, 40; positioning module, 51; communication module, 52; antenna, 521; timing module, 53; wake-up module, 54; photosensitive sensor, 55; communication module, 56; output module, 57; vehicle, 60; battery pack, 61. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Here, the technical solutions in the embodiments (or "embodiment modes") of this application will be clearly and completely described in conjunction with the drawings. When the following description involves the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0031] If there are terms related to directional indication or positional relationship in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, terms such as "first" and "second" involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0032] The battery pack is a core heavy asset in new energy vehicles. Due to its high value, the battery pack is easily stolen. Traditional anti-theft devices lack alarms when the battery pack is detached from the vehicle, resulting in a relatively high risk of asset loss for users or companies leasing vehicles. The present application provides an anti-theft device and a vehicle to solve the related technical problems.

[0033] As Figure 1 and Figure 2 As shown, the present application provides an anti-theft device 1, including a constant power interface 11, a battery pack interface 12, an interlock interface 13, a NAND circuit 20, a first voltage converter 31, a second voltage converter 32, a processor 40, a positioning module 51, and a communication module 52.

[0034] The constant power interface 11 is used to be electrically connected to the constant power supply of the vehicle. The battery pack interface 12 is used to be electrically connected to the power supply end of the battery pack. The interlock interface 13 is used to be electrically connected to the high-voltage interlock interface of the battery pack. The NAND circuit 20 includes a first input terminal 21 and a second input terminal 22. The first input terminal 21 is electrically connected to the constant power interface 11, and the second input terminal 22 is electrically connected to the interlock interface 13.

[0035] The input end of the first voltage converter 31 is electrically connected to the battery pack interface 12, and the enable end of the first voltage converter 31 is electrically connected to the output end of the NAND circuit 20. The input end of the second voltage converter 32 is electrically connected to the output end of the first voltage converter 31 and the constant power interface 11. The enable end of the second voltage converter 32 is electrically connected to the output end of the first voltage converter 31.

[0036] The power supply end of the processor 40 is electrically connected to the output end of the second voltage converter 32. The positioning module 51 is used to obtain position information. The communication module 52 is used to send position information. The processor 40 is electrically connected to the positioning module 51 and the communication module 52 respectively, and is used to send the position information to the communication module 52 when the second voltage converter 32 supplies power to the processor 40.

[0037] When the battery pack is detached from the vehicle body, the voltages in the constant power supply interface 11 and the interlock interface 13 disappear, and the NAND circuit 20 can output a signal to enable the first voltage converter 31. At this time, the first voltage converter 31 converts the voltage of the battery pack interface 12 and outputs it to the second voltage converter 32. While enabling the second voltage converter 32, it provides an input to the second voltage converter 32. The second voltage converter 32 outputs a voltage to the processor 40 to supply power to the processor 40. The processor 40 transmits the position information obtained by the positioning module 51 to the cloud platform through the communication module 52 to give an early warning of the detachment of the battery pack.

[0038] Therefore, the anti-theft device 1 provided by this application has the function of alarming when the battery pack is detached. When the battery pack is detached from the vehicle, the anti-theft device 1 can promptly send the position to the data platform, enabling users or rental companies to track it in a timely manner and reducing the risk of asset losses. At the same time, by setting the NAND circuit 20 and the voltage converter, and using the method of voltage conversion to supply power and wake up the processor 40, it is not necessary to detect the constant power supply interface 11 and the interlock interface 13 for a long time, simplifying the circuit and reducing the power consumption of the anti-theft device 1.

[0039] As Figure 3 shown, this application also provides a vehicle 60, including a battery pack 61 and the above-mentioned anti-theft device 1. Since the anti-theft device 1 can give an alarm in a timely manner when the battery pack 61 is detached from the vehicle, the vehicle of this application has good anti-theft ability, reducing the risk of asset losses for users or rental companies. The anti-theft device 1 can be installed inside the battery pack 61 to prevent being damaged by thieves, further improving the anti-theft ability of the vehicle.

[0040] The vehicle 60 of this application can be an electric vehicle, specifically a commercial vehicle, a passenger vehicle, a logistics vehicle, etc., and the specific vehicle type is not limited. The anti-theft device 1 can be set with a wide power supply range to adapt to the voltages of different types of vehicles. For example: the power supply range that the anti-theft device 1 can accept is greater than or equal to 8V and less than or equal to 36V.

[0041] As Figure 2 shown, the constant power supply interface 11 receives the voltage signal of the vehicle's constant power supply, that is, Figure 2 the "KL30" (German Klemme, pin) signal shown in

[0042] The battery pack interface 12 receives the high-voltage signal of the battery pack, that is, Figure 2The "HV" (High Voltage) signal shown in the figure is used to supply power to the anti-theft device 1 after being converted when the constant power interface 11 is disconnected from the vehicle's constant power voltage. Therefore, when the battery pack is removed from the vehicle, the anti-theft device can still continue to work. The high voltage can use a flyback power supply, and the provided voltage is greater than or equal to 250V and less than or equal to 500V. Also, there is a high voltage interlock circuit in the battery pack, and the anti-theft device 1 will only be powered by one of the constant power supply or the battery pack high voltage power supply to protect the circuit.

[0043] The NAND circuit 20 can be an integrated NAND gate module. The first input terminal 21 can be electrically connected to the processor 40 for detecting the voltage signal of the vehicle's constant power supply. The second input terminal 22 can be electrically connected to the processor 40 for detecting the high voltage interlock signal of the battery pack. The processor 40 can detect the constant power supply of the vehicle and the high voltage interlock signal of the battery pack during the power supply state, improving the accuracy of the battery disconnection judgment.

[0044] As Figure 2 shown, the processor 40 can be an MCU (Microcontroller Unit) module, and the specific type is not limited. The processor 40 is connected with a WDO (Watch Dog Output) module for resetting the processor 40. The WDO module is electrically connected to the output terminal of the second voltage converter 32 to obtain power supply.

[0045] When the processor 40 sends information to the data platform, in addition to location information such as longitude and latitude, it can also send information such as time and the SN (Serial Number) code of the anti-theft device, and comprehensively compare with the VIN (Vehicle Identification Number) of the corresponding vehicle on the data platform and the location information of the T-BOX, which can further improve the tracking efficiency and the anti-theft ability of the vehicle.

[0046] The positioning module 51 can be a GPS (Global Positioning System) module, and the specific type is not limited. The communication module 52 can be a 4G module, and the specific type is not limited. The communication module 52 includes an antenna 521, and the antenna 521 is installed inside the battery pack and is not easily disassembled to avoid being damaged by thieves. In some embodiments, the positioning module 51 and the information sending module 52 can be integrally arranged to reduce the layout area and reduce radiation.

[0047] The integrated module with integrated positioning and communication functions can be powered through the output terminal of the second voltage converter 32. An LDO (Low-dropout regulator) module can be provided between the integrated module and the second voltage converter 32 to meet the voltage requirements of the integrated module. The integrated module can be connected to the processor 40 through a UART (Universal Asynchronous Receiver / Transmitter) bus for signal transmission. During the upper computer debugging stage, the integrated module can send an enable signal, that is, Figure 2 the "GPS_EN" signal shown in Figure 2 to wake up the processor 40. Similarly, during the upper computer debugging stage, the processor 40 can also send an enable signal, that is,

[0048] the "MCU_EN" signal shown in Figure 1 and Figure 2 to wake up the integrated module.

[0049] In some embodiments, as shown in

[0050] the anti-theft device 1 may further include a timing module 53. The output terminal of the timing module 53 is electrically connected to the enable terminal of the second voltage converter 32 to periodically enable the second voltage converter 32. By periodically enabling the second voltage converter 32, the processor 40 is periodically woken up to detect signals at the first input terminal 21 and the second input terminal 22 and send information such as the position to the data platform, so as to further improve the anti-theft performance of the vehicle.

[0051] The user can also choose whether to send information such as the position according to their own needs. When the processor 40 is woken up, it can only detect the first input terminal 21 and the second input terminal 22. When it detects that the vehicle's constant power signal or the high-voltage interlock signal is disconnected, the processor 40 sends the position information to the data platform.

[0050] The timing module 53 is electrically connected to the constant power interface 11 and the output terminal of the first voltage converter 31 to obtain power supply. The timing module 53 can be connected to an LDO to meet the voltage magnitude requirements for its own power supply. The timing module 53 can specifically be an RTC (Real Time Clock) module, which sends an enable signal, that is, the "RTC_EN" signal shown in the figure, to the second voltage converter 32 through its output terminal to wake up the processor 40. The specific type of the timing module 53 is not limited.

[0051] The timing module 53 and the processor 40 can be connected via I2C (Inter-Integrated Circuit). After the host computer is connected to the processor 40, it can set the period for the timing module 53 to wake up the processor 40. For example, the timing module 53 can wake up the processor 40 once every 1 second, 10 minutes, 30 minutes, 1 hour, 4 hours, 12 hours, or 24 hours, and send relevant information to the data platform. The specific wake-up period is not limited and can be set according to the tracking requirements of users or rental companies for the vehicle. When key tracking is required, the wake-up frequency of the timing module 53 can be increased. The processor 40 is in a sleep state at other times to reduce power consumption.

[0052] In some embodiments, the anti-theft device 1 may further include a wake-up module 54. The wake-up module 54 is electrically connected to the first input terminal 21 and the second input terminal 22. The output terminal of the wake-up module 54 is electrically connected to the enable terminal of the second voltage converter 32. When the signal of at least one of the first input terminal 21 and the second input terminal 22 is disconnected, the wake-up module 54 can output a signal to enable the second voltage converter 32. By adding the wake-up module 54, the first input terminal 21 and the second input terminal 22 are detected, and when the voltage signal is detected to be disconnected, the processor 40 is woken up, improving the timeliness and accuracy of the battery pack disconnection alarm.

[0053] In some theft scenarios, only one of the constant power interface 11 and the interlock interface 13 is disconnected from the outside. For example, when only the interlock interface 13 is disconnected from the outside while the constant power interface 11 is still connected to the outside, since there is a high-voltage interlock circuit in the battery pack, the anti-theft device 1 is still powered by the constant power supply, and the high-voltage power supply of the battery pack is not input. Therefore, although the first voltage converter 31 is in an enabled state, due to the absence of an input voltage, the first voltage converter 31 cannot output a voltage to enable the second voltage converter 32, resulting in the processor 40 not being able to be woken up. At this time, by adding the wake-up module 54, an enable signal can be output through the wake-up module 54, that is Figure 1 the "Wake1" signal shown in, to wake up the processor 40, increasing the theft scenarios that the anti-theft device 1 can monitor and further improving the anti-theft performance of the vehicle.

[0054] The wake-up module 54 can be an electronic module integrating a detection unit and an output unit, and the specific module type is not limited. The wake-up module 54 can output a PWM (Pulse Width Modulation) wave, and the specific waveform type is not limited. The PWM signal has high precision and can expand the equivalent voltage range of the output signal by adjusting the width and duty cycle. A Schmitt trigger can be connected between the wake-up module 54 and the enable terminal of the second voltage converter 32 to improve anti-interference and stability.

[0055] The following specifically describes the scenarios that the battery pack may encounter. When the battery pack is normally installed in a vehicle, the constant power interface 11 and the interlock interface 13 are normally connected to the outside. The anti-theft device 1 is powered by the vehicle's constant power supply, and the timing module 53 is used to periodically wake up the processor 40 to detect the first input terminal 21 and the second input terminal 22.

[0056] When the constant power interface 11 is disconnected from the outside while the interlock interface 13 is normally connected to the outside, the anti-theft device 1 is powered by the high-voltage power supply of the battery pack. The processor 40 is awakened, periodically sends location information, and continuously detects the signals of the first input terminal 21 and the second input terminal 22 until the constant power interface 11 is normally connected to the outside.

[0057] If it is detected during this period that the interlock interface 13 is also disconnected from the outside, the processor 40 will continuously obtain location information and send the data to the data platform. After the user or rental company receives the information on the data platform, they can make the next judgment. If the battery pack is stolen, it will be tracked in a timely manner. If the battery pack is legally removed, the data upload of the anti-theft device 1 will be stopped through after-sales tools.

[0058] When the interlock interface 13 is disconnected from the outside while the constant power interface 11 is normally connected to the outside, due to the existence of the interlock circuit, the anti-theft device 1 is powered by the vehicle's constant power supply and continuously detects the signals of the first input terminal 21 and the second input terminal 22 until the interlock interface 13 is normally connected to the outside.

[0059] If it is detected during this period that the constant power interface 11 is also disconnected from the outside, the anti-theft device 1 switches to high-voltage power supply. The processor 40 will continuously obtain location information and send the relevant data to the data platform. The user or rental company can judge whether the battery pack is stolen or legally removed to track it or stop the data upload of the anti-theft device 1 through after-sales tools.

[0060] When the battery pack is just out of the factory and not installed in a vehicle, the anti-theft device 1 is powered by the high voltage of the battery pack. Before leaving the factory, the flag bit of the processor 40 can be written through the host computer to indicate that the battery pack is in the factory state. When the anti-theft device 1 recognizes the vehicle's constant power supply signal or the high-voltage interlock signal, it periodically wakes up the processor 40 through the timing module 53, detects the signals of the first input terminal 21 and the second input terminal 22, and sends information to the data platform.

[0061] When both the constant power interface 11 and the interlock interface 13 are disconnected from the outside, the anti-theft device 1 is powered by high voltage. The processor 40 continuously obtains location information and sends the information to the data platform. The user or rental company can judge whether the battery pack is stolen or legally removed to track it or stop the data upload of the anti-theft device 1 through after-sales tools.

[0062] In some embodiments, such as Figure 2 shown, the anti-theft device 1 may further include a photosensitive sensor 55. The photosensitive sensor 55 is electrically connected to the enable terminal of the second voltage converter 32. When the battery pack is disassembled, the photosensitive sensor 55 converts the optical signal into an electrical signal to enable the second voltage converter 32. When the housing of the battery pack is damaged, the photosensitive sensor 55 receives the optical signal and outputs an electrical signal, that is Figure 2 the "Wake2" signal shown in

[0063] to enable the second voltage converter 32 to wake up the processor 40 and send information such as the position to the data platform, so that the anti-theft device 1 has the function of unpacking alarm, further improving the anti-theft performance of the vehicle.

[0064] In one embodiment, such as Figure 2 shown, the anti-theft device 1 may further include a communication module 56 for information interaction with the BMS (Battery Management System) of the battery pack. The communication module 56 is connected to the processor 40 through a transmission bus. The output terminal of the communication module 56 is electrically connected to the enable terminal of the second voltage converter 32.

[0065] After the processor 40 is powered on and awakened, it can use the communication module 56 to interact with the BMS to obtain the status of the battery pack. When the network is poor, if the data platform does not receive relevant information, the BMS can use the communication module 56 to send a signal to enable the second voltage converter 32, that is Figure 1 the "CAN_EN" signal shown in

[0066] to wake up the processor 40 to continuously send information to the data platform.

[0067] In one embodiment, such as Figure 2As shown, the anti-theft device 1 may further include an output module 57. The input end of the output module 57 is electrically connected to the processor 40, so that the processor 40 can control the output module 57 to supply power externally.

[0068] By providing the output module 57, the anti-theft device 1 can supply power externally, improving the expandability of the anti-theft device 1. Designers can select the power supply object of the anti-theft device 1 according to actual needs, such as supplying power to the BMS, etc. The output module 57 can be an HSD (High Side Driver) module, and the specific type is not limited. The output voltage of the output module 57 can be 12V or 24V, etc., and the specific voltage value is not limited.

[0069] In other embodiments, as Figure 2 shown, a spare interface 14 can be provided on the anti-theft device 1 to further improve the expandability of the anti-theft device 1. The number of spare interfaces 14 can be multiple, capable of inputting or outputting levels or PWM. The processor 40 can detect the voltage of multiple nodes in the circuit to judge the working state of the circuit, that is Figure 2 the "Sample" signal shown in

[0070] As Figure 1 shown, the anti-theft device 1 of the present application integrates multiple functions such as positioning, detachment alarm, unpacking alarm, etc. It can timely lock the position where the battery pack is stolen, can effectively prevent asset losses, and improve the anti-theft performance of the vehicle. Moreover, the anti-theft device 1 is provided with a DO (Digital Output) terminal and a DI (Digital Input) terminal, which can judge the circuit state through the sensor input signal, and can also output signals externally to communicate with the BMS or supply power externally, improving the expandability of the anti-theft device 1.

[0071] Since the anti-theft device 1 is independently provided and integrates multiple functions, the vehicle does not need to additionally set more components. The anti-theft device 1 can be installed in multiple battery packs, and replacement and maintenance are also relatively convenient. At the same time, since the anti-theft device 1 is installed in the battery pack, it is not easily damaged, has a long service life, and can protect the entire life cycle of the battery pack.

[0072] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. An anti-theft device, characterized in that: include: A normal power interface, used for electrically connecting to a normal power source of a vehicle; A battery pack interface, used to electrically connect to a power supply terminal of a battery pack of the vehicle; An interlocking interface, used to electrically connect to a high-voltage interlocking interface of the battery pack; A NAND circuit, comprising a first input terminal and a second input terminal, wherein the first input terminal is electrically connected to the normal power interface, and the second input terminal is electrically connected to the interlocking interface; A first voltage converter, wherein an input terminal of the first voltage converter is electrically connected to the battery pack interface, and an enable terminal of the first voltage converter is electrically connected to an output terminal of the NAND circuit; A second voltage converter, wherein an input terminal of the second voltage converter is electrically connected to an output terminal of the first voltage converter and the normal power interface; an enable terminal of the second voltage converter is electrically connected to an output terminal of the first voltage converter; Positioning module, used to obtain location information; A communication module, used for sending location information; A processor, wherein the power supply end of the processor is electrically connected to the output end of the second voltage converter, and the processor is electrically connected to the positioning module and the communication module respectively, and is used to send the position information to the communication module when the second voltage converter supplies power to the processor.

2. The anti-theft device according to claim 1, characterized in that: The first input terminal is electrically connected to the processor for detecting a signal of a normal power supply of the vehicle; the second input terminal is electrically connected to the processor for detecting a high-voltage interlock signal of a battery pack.

3. The anti-theft device according to claim 1, characterized in that: It also includes a wake-up module, which is electrically connected to the first input terminal and the second input terminal; the output terminal of the wake-up module is electrically connected to the enable terminal of the second voltage converter; when the signal of at least one of the first input terminal and the second input terminal is disconnected, the wake-up module can output a signal to enable the second voltage converter.

4. The anti-theft device according to claim 1, characterized in that: It also includes a timing module, the output end of the timing module is electrically connected to the enable end of the second voltage converter to periodically enable the second voltage converter.

5. The anti-theft device according to claim 1, characterized in that: It also includes a photosensor, which is electrically connected to the enable end of the second voltage converter. When the battery pack is disassembled, the photosensor converts the optical signal into an electrical signal to enable the second voltage converter.

6. The anti-theft device according to claim 1, characterized in that: It also includes a communication module for exchanging information with the BMS of the battery pack, wherein the communication module is connected to the processor via a transmission bus; and the output end of the communication module is electrically connected to the enable end of the second voltage converter.

7. The anti-theft device according to claim 1, characterized in that: An output module is also included, and an input end of the output module is electrically connected to the processor so that the processor can control the output module to supply power to the outside.

8. The anti-theft device according to claim 1, characterized in that: The positioning module is integrated with the communication module.

9. The anti-theft device according to claim 1, characterized in that: The communication module includes an antenna, and the antenna is installed inside the battery pack.

10. A vehicle, characterized in that: include: A battery pack and an anti-theft device as claimed in any one of claims 1 to 9.

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