Battery anti-theft method and battery anti-theft system for power battery

Abstract

The invention relates to the technical field of battery anti-theft, in particular to a battery anti-theft method and a battery anti-theft system of a power battery. The battery anti-theft system comprises a battery acquisition unit which is powered by a power battery pack, is installed on the power battery pack and is used for acquiring and updating state information of the power battery pack; and the vehicle control unit is in hard wire connection with the battery acquisition unit, and the vehicle control unit is configured to send an alarm signal when a hard wire signal between the vehicle control unit and the battery acquisition unit is disconnected and the state information of the power battery pack is displayed to be abnormal. The power battery pack of the automobile supplies power to the acquisition unit for acquiring the battery state information, so that the power supply stability is improved, and the anti-theft function failure caused by external power supply abnormity is avoided.

Description

Technical Field

[0001] This application relates to the technical field of battery anti-theft, and particularly to a battery anti-theft method and a battery anti-theft system for a power battery. Background Art

[0002] In recent years, with the development of the new energy vehicle industry, the proportion of new energy vehicles has been increasing. The battery system is the heart of a new energy vehicle and has a relatively high value in itself. Therefore, the battery systems on some vehicles have become targets for theft.

[0003] To prevent the power batteries on vehicles from being stolen by others, related technologies monitor the position of the batteries through an anti-theft system and report abnormal situations when the batteries are stolen. Currently, the basic battery anti-theft systems use external power supplies. The vehicle electronic alarm anti-theft system is based on the central door lock, and a control circuit for the anti-theft system is added to prevent the vehicle from being moved while alarming, so as to deter thieves mentally and effectively prevent vehicle theft. However, as an electronic device, if the power supply of the electronic alarm anti-theft system is maliciously cut off, the electronic alarm anti-theft system will lose its anti-theft function. Summary of the Invention

[0004] In view of the problem in the related technologies that, as an electronic device, the electronic alarm anti-theft system has unstable power supply, and even under malicious damage, the electronic alarm anti-theft system will lose its anti-theft function.

[0005] In a first aspect, an embodiment of the present application provides a battery anti-theft system for a power battery. The battery anti-theft system includes:

[0006] A battery acquisition unit powered by the power battery pack, which is installed on the power battery pack, and the battery acquisition unit is used to acquire and update the status information of the power battery pack;

[0007] A vehicle controller, which is hard-wired to the battery acquisition unit, and the vehicle controller is configured to:

[0008] When the hard-wired signal between the vehicle controller and the battery acquisition unit is disconnected and the status information of the power battery pack shows an abnormality, the vehicle controller sends an alarm signal.

[0009] In combination with the first aspect, in an implementation, the battery anti-theft system further includes: a remote communication terminal, which is signal-connected to the vehicle controller, and the remote communication terminal is used to receive the alarm signal from the vehicle controller and send battery theft information to a receiving platform.

[0010] In combination with the first aspect, in one embodiment, it further includes: a battery management controller, which is signal - connected to the battery acquisition unit and the vehicle controller. The battery management controller is used to receive the status information of the battery acquisition unit and display the real - time status information and position information of each battery cell in the power battery pack.

[0011] In combination with the first aspect, in one embodiment, it further includes: a timer, which is connected to the battery management controller. The timer is used to periodically wake up the battery management controller.

[0012] In combination with the first aspect, in one embodiment, it further includes: a low - voltage power supply, which is electrically connected to the battery management controller and the vehicle controller.

[0013] In combination with the first aspect, in one embodiment, the battery acquisition unit includes: an acquisition chip, and the acquisition chip is installed on the battery cell.

[0014] In a second aspect, an embodiment of the present application provides a battery anti - theft method using the above - mentioned battery anti - theft system, including:

[0015] Using the battery acquisition unit to update the status information of the power battery pack in real - time;

[0016] Monitoring the on - off situation of the hard - wire signal between the vehicle controller and the battery acquisition unit, and controlling the vehicle controller to execute actions according to the on - off situation of the hard - wire signal; wherein,

[0017] When the vehicle controller and the battery acquisition unit maintain hard - wire connection, the vehicle controller is kept in a sleep state;

[0018] When the hard - wire signal between the vehicle controller and the battery acquisition unit is disconnected, the vehicle controller is woken up and driven to send an alarm signal.

[0019] In combination with the second aspect, in one embodiment, the step of using the battery acquisition unit to update the status information of the power battery pack in real - time includes:

[0020] Using the battery cell with the highest voltage in the power battery pack as the power - supply battery to supply power to the battery acquisition unit;

[0021] Periodically waking up the battery management controller to calculate the voltage value of each battery cell, and replacing the power - supply battery according to the real - time voltage values of all battery cells.

[0022] In combination with the second aspect, in one embodiment, the step of waking up the vehicle controller and driving the vehicle controller to send an alarm signal includes:

[0023] Wake up the vehicle control unit and drive the vehicle control unit to wake up the battery management controller; wherein,

[0024] When the battery management controller is woken up, the power battery pack is checked for its status by the battery management controller, and the vehicle control unit determines whether to send an alarm signal according to the status check result;

[0025] When the battery management controller cannot be woken up, the vehicle control unit sends an alarm signal.

[0026] Combined with the second aspect, in one implementation, the power battery pack is checked for its status by the battery management controller, and the vehicle control unit determines whether to send an alarm signal according to the status check result, including:

[0027] When the battery management controller detects that all the battery cells are in normal status, the vehicle control unit reports a fault in the battery anti-theft system;

[0028] When the battery management controller detects that there is a loss of status data of the battery cells, the vehicle control unit sends an alarm signal.

[0029] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0030] The present application supplies power to the acquisition unit for collecting battery status information through the power battery pack of the vehicle, improving the power supply stability and avoiding the failure of the anti-theft function caused by abnormal external power supply. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of an embodiment of the battery anti-theft system of the present application;

[0032] In the figure: 1, power battery pack; 11, battery cell; 12, battery management controller; 13, timer; 2, battery acquisition unit; 21, acquisition chip; 3, remote communication terminal; 4, vehicle control unit; 5, MOS tube; 6, low-voltage power supply. Detailed Embodiments

[0033] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0034] In the related art, as an electronic device, the electronic alarm and anti-theft system has problems such as unstable power supply. Even under malicious damage, the electronic alarm and anti-theft system will lose its anti-theft function.

[0035] In a first aspect, an embodiment of the present application provides a battery anti-theft system for a power battery. The battery anti-theft system includes: a battery acquisition unit 2 and a vehicle controller 4; wherein,

[0036] The battery acquisition unit 2 is powered by the power battery pack 1, is installed on the power battery pack 1, and is used to collect and update the status information of the power battery pack 1; the vehicle controller 4 is hard-wired to the battery acquisition unit 2, and the vehicle controller 4 is configured to:

[0037] When the hard-wired signal between the vehicle controller 4 and the battery acquisition unit 2 is disconnected and the status information of the power battery pack 1 shows an abnormality, the vehicle controller 4 sends an alarm signal.

[0038] It can be understood that in the embodiment of the present application, the battery acquisition unit 2 continuously collects and updates the real-time status of the power battery pack 1 after the vehicle goes into sleep. Therefore, once the battery is stolen, the hard-wired signal between the battery acquisition unit 2 and the vehicle controller 4 will be immediately disconnected, thereby triggering the vehicle controller 4 to check the status information of the power battery pack 1. Once data abnormality is found, an alarm signal will be immediately sent to prevent the battery from being stolen. Further, when the vehicle stops and enters the vehicle sleep state, the power battery pack 1 of the vehicle continuously powers the battery acquisition unit 2, thereby avoiding the risk of the anti-theft alarm function failing due to unstable external power supply or even damage to the external power supply.

[0039] In some preferred embodiments, the battery anti-theft system further includes: a remote communication terminal 3, which is signal-connected to the vehicle controller 4, and the remote communication terminal 3 is used to receive the alarm signal of the vehicle controller 4 and send battery theft information to the receiving platform.

[0040] Optionally, the remote communication terminal 3 can be a TBOX (Telematics Box), which is a remote communication terminal on the vehicle, a product integrating body network and wireless communication functions, and can provide Telematics services.

[0041] It can be understood that after receiving the alarm signal sent by the vehicle controller 4, the remote communication terminal 3 can timely send battery theft information to the customer and the receiving platform. The battery theft information includes the number, location, and time of the stolen batteries, etc., which is convenient for the customer to discover and handle in a timely manner.

[0042] In some optional embodiments, the battery anti-theft system of the power battery further includes: a battery management controller 12, which is signal-connected to the battery acquisition unit 2 and the vehicle controller 4. The battery management controller 12 is configured to receive the status information of the battery acquisition unit 2 and display the real-time status information and position information of each battery cell 11 in the power battery pack 1.

[0043] It should be noted that the battery management controller 12 can update and display the status of the battery cell 11 according to information such as the voltage and temperature of the battery cell 11 collected by the battery acquisition unit 2.

[0044] Furthermore, the battery anti-theft system of the power battery further includes: a timer 13, which is connected to the battery management controller 12. The timer 13 is configured to wake up the battery management controller 12 regularly.

[0045] It should be noted that since the anti-theft system is generally enabled when the vehicle is parked and in a sleep state, in order to save power, the battery management controller 12 should not be in a long-term running state. The battery management controller 12 can be woken up regularly by the timer 13 to update and display the status of the battery cell 11.

[0046] In some optional embodiments, the battery anti-theft system of the power battery further includes: a low-voltage power supply 6, which is electrically connected to the battery management controller 12 and the vehicle controller 4.

[0047] It can be understood that the low-voltage power supply 6 is used to supply power to the battery management controller 12 and the vehicle controller 4 to keep the two components operating for the whole vehicle.

[0048] In some optional embodiments, the battery acquisition unit 2 includes: an acquisition chip 21, and the acquisition chips 21 are all installed on one battery cell 11.

[0049] It can be understood that the acquisition chip 21 (AFE) is an acquisition chip for acquiring the voltage and temperature of the battery cell. One AFE can acquire information data such as the voltage and temperature of multiple battery cells.

[0050] In a second aspect, the present application provides a battery anti-theft method using the battery anti-theft system in any of the above embodiments, which includes:

[0051] Step S1: After the vehicle stops and enters the sleep state, use the power battery pack 1 to supply power to the battery acquisition unit 2.

[0052] It can be understood that the present application uses the power battery pack 1 of the whole vehicle to supply power to the battery acquisition unit, avoiding the risks of unstable external power supply and easy damage, and improving the working stability of the anti-theft system.

[0053] Specifically, the above step S1 includes:

[0054] Step S1a: Use the battery cell 11 with the highest voltage in the power battery pack 1 as the power supply battery to supply power to the battery acquisition unit 2.

[0055] Specifically, the above step S1a includes:

[0056] Step A: Before the whole vehicle stops and enters the sleep state, record the value of the highest voltage among all the battery cells 11 in the electric battery pack 1, and calculate the time it takes for the battery cell with the highest voltage to reach the average voltage of all the battery cells 11 during its operation in the low-power mode.

[0057] Step B: After entering the sleep state, the battery management controller 12 drives the battery cell 11 with the highest voltage among all the battery cells 11 to supply power to the acquisition chip 21, and the acquisition chip 21 is in the low-power mode at this time.

[0058] Step S1b: Regularly wake up the battery management controller 12 to calculate the voltage value of each battery cell 11, and replace the power supply battery according to the real-time voltage values of all the battery cells 11.

[0059] In some preferred embodiments, take the time when the battery cell 11 with the highest voltage during the previous charging step reaches the average voltage of all the battery cells 11 as a time segment, regularly wake up the BMS according to this time segment, update the battery cell 11 with the highest voltage in a timely manner, and switch the corresponding battery cell 11 with the highest voltage as the power supply battery to supply power to the acquisition chip 21.

[0060] It should be noted that by adopting the above power supply strategy, the present application effectively utilizes the redundant power consumption of the battery cells 11, ensures the consistency of the battery cells 11 in the battery system, and at the same time avoids the failure of the anti-theft function caused by abnormal external power supply.

[0061] Step S2: Use the battery acquisition unit 2 to update the status information of the power battery pack 1 in real time.

[0062] It should be noted that after the battery acquisition unit 2 acquires the information of the battery cells 11, it transmits the information to the battery management controller 12, and starts to update the status information of the battery cells 11 each time the battery management controller 12 is awakened.

[0063] Step S3: Monitor the on / off status of the hardwired signal between the vehicle controller 4 and the battery acquisition unit 2, and control the vehicle controller 4 to perform actions according to the on / off status of the hardwired signal.

[0064] It can be understood that multiple acquisition chips 21 and the vehicle controller 4 are connected by hard wires. Once the battery is stolen, the corresponding hard wire signal is disconnected, triggering the vehicle controller 4 to be awakened.

[0065] Specifically, the above step S3 includes:

[0066] Case 1: When the vehicle controller 4 is hard-wired to the battery acquisition unit 2, the vehicle controller 4 is kept in a sleep state;

[0067] Case 2: When the hard wire signal between the vehicle controller 4 and the battery acquisition unit 2 is disconnected, the vehicle controller 4 is awakened. Further, the vehicle controller 4 awakens the battery management controller 12 to check the state of the power battery pack 1. If the battery management controller 12 cannot be awakened or data of some acquisition chips 21 is lost, it is determined that the power battery pack 1 has been stolen.

[0068] Further, after it is determined that the power battery pack 1 has been stolen, the vehicle controller 4 awakens the remote communication terminal 3 and sends a battery system theft message to the remote communication terminal 3; when the remote communication terminal 3 is awakened and receives the battery system theft message sent by the vehicle controller 4, it immediately sends battery theft information to the customer and the platform to remind the customer and the integrity center to handle it.

[0069] Case 3: When the hard wire signal between the vehicle controller 4 and the battery acquisition unit 2 is disconnected, the vehicle controller 4 is awakened. Further, the vehicle controller 4 awakens the battery management controller 12. If the battery management controller 12 can be awakened and the vehicle controller 4 receives normal battery data from the battery management controller 12, it is determined that the anti-theft system has a fault, and a battery anti-theft function fault code is sent to the vehicle instrument.

[0070] In a third aspect, an embodiment of the present application provides a battery anti-theft device. The battery anti-theft device can be a device with data processing functions such as a personal computer (PC), a laptop computer, a server, etc.

[0071] Among them, the communication bus can be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0072] The communication interface includes input / output (I / O) interfaces, physical interfaces, and logical interfaces, etc., which are used to interconnect the components inside the battery anti-theft device, as well as interfaces used to interconnect the battery anti-theft device with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, an optical fiber interface, an ATM interface, etc.; the user device can be a display screen (Display), a keyboard (Keyboard), etc.

[0073] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical memory, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0074] The processor can be a general-purpose processor, which can call the battery anti-theft program stored in the memory and execute the battery anti-theft method provided by the embodiments of the present application. For example, the general-purpose processor can be a central processing unit (CPU). Among them, the method executed when the battery anti-theft program is called can refer to the various embodiments of the battery anti-theft method of the present application, which will not be elaborated here.

[0075] Fourthly, the embodiments of the present application further provide a computer-readable storage medium.

[0076] The battery anti-theft program is stored on the computer-readable storage medium of the present application. When the battery anti-theft program is executed by a processor, the implemented battery anti-theft method includes:

[0077] Step S1: After the whole vehicle stops and enters the sleep state, use the power battery pack 1 to supply power to the battery acquisition unit 2.

[0078] It can be understood that the present application uses the power battery pack 1 of the whole vehicle to supply power to the battery acquisition unit, avoiding the risks of unstable external power supply and easy damage, and improving the working stability of the anti-theft system.

[0079] Specifically, the above step S1 includes:

[0080] Step S1a: Use the battery cell 11 with the highest voltage in the power battery pack 1 as the power supply battery to supply power to the battery acquisition unit 2.

[0081] Specifically, the above step S1a includes:

[0082] Step A: Before the whole vehicle stops and enters the sleep state, record the value of the highest voltage among all the battery cells 11 in the electric battery pack 1, and calculate the time when the highest battery cell reaches the average voltage of all the battery cells 11 during the operation in the low-power mode.

[0083] Step B: After entering the sleep state, the battery management controller 12 drives the battery cell 11 with the highest voltage among all battery cells 11 to supply power to the acquisition chip 21, and the acquisition chip 21 is in the low-power mode at this time.

[0084] Step S1b: Regularly wake up the battery management controller 12 to calculate the voltage values of each battery cell 11, and replace the power supply battery according to the real-time voltage values of all battery cells 11.

[0085] In some preferred embodiments, the time when the battery cell 11 with the highest voltage in the previous charging step reaches the average voltage of all battery cells 11 during operation is used as a time segment. The BMS is woken up regularly according to this time segment, the battery cell 11 with the highest voltage is updated in time, and the battery cell 11 corresponding to the highest voltage is switched as the power supply battery to supply power to the acquisition chip 21.

[0086] It should be noted that by adopting the above power supply strategy, the present application effectively utilizes the redundant power consumption of the battery cells 11, ensures the consistency of the battery cells 11 in the battery system, and at the same time avoids the failure of the anti-theft function caused by abnormal external power supply.

[0087] Step S2: Use the battery acquisition unit 2 to update the state information of the power battery pack 1 in real time.

[0088] It should be noted that after the battery acquisition unit 2 acquires the information of the battery cells 11, it transmits the information to the battery management controller 12, and the state information of the battery cells 11 starts to be updated after each wake-up of the battery management controller 12.

[0089] Step S3: Monitor the on / off status of the hard-wired signal between the vehicle controller 4 and the battery acquisition unit 2, and control the vehicle controller 4 to perform actions according to the on / off status of the hard-wired signal.

[0090] It can be understood that the multiple acquisition chips 21 and the vehicle controller 4 are connected by hard wires. Once the battery is stolen, the corresponding hard-wired signal is disconnected, triggering the vehicle controller 4 to be woken up.

[0091] Specifically, the above step S3 includes:

[0092] Case 1: When the vehicle controller 4 and the battery acquisition unit 2 maintain a hard-wired connection, the vehicle controller 4 remains in the sleep state;

[0093] Case 2: When the hard-wired signal between the vehicle controller 4 and the battery acquisition unit 2 is disconnected, the vehicle controller 4 is woken up. Further, the vehicle controller 4 wakes up the battery management controller 12 to check the state of the power battery pack 1. If the battery management controller 12 cannot be woken up or data of some acquisition chips 21 is lost, it is determined that the power battery pack 1 has been stolen.

[0094] Further, after it is determined that the power battery pack 1 has been stolen, the vehicle controller 4 wakes up the remote communication terminal 3 and sends a battery system theft message to the remote communication terminal 3; when the remote communication terminal 3 is woken up and receives the battery system theft message sent by the vehicle controller 4, it immediately sends battery theft information to the customer and the platform to remind the customer and the integrity center to handle it.

[0095] Case 3: When the hardwired signal between the vehicle controller 4 and the battery acquisition unit 2 is disconnected, the vehicle controller 4 is woken up. Further, the vehicle controller 4 wakes up the battery management controller 12. If the battery management controller 12 can be woken up and the vehicle controller 4 receives normal battery data from the battery management controller 12, it is determined that there is a fault in the anti-theft system, and a battery anti-theft function fault code is sent to the vehicle instrument.

[0096] Among them, the method implemented when the battery anti-theft program is executed can refer to the various embodiments of the battery anti-theft method of the present application, which will not be elaborated here.

[0097] In summary, the present application wakes up the battery management controller regularly. After the battery system goes into sleep, the power supply of the acquisition chip is powered by the battery cells. When the calculated highest cell voltage reaches the average cell voltage considering the loss of the acquisition chip, the battery management controller is woken up, and the second-highest voltage battery cell is switched to supply power to the acquisition chip, effectively utilizing the excess power consumption of the cells and ensuring the consistency of the battery cells in the battery system. This self-powered battery system anti-theft device avoids the failure of the anti-theft function caused by abnormal external power supply. The design of this device is reasonable and is expected to have strong feasibility. It can quickly give an early warning when battery theft occurs, has low power consumption, and avoids the failure of the anti-theft function caused by abnormal external power supply in the past.

[0098] It should be noted that the serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments.

[0099] The terms "including" and "having" and any variations thereof in the specification, claims and drawings of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include unlisted steps or units, or may optionally further include other steps or units inherent to these processes, methods, products or devices. The descriptions of terms such as "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit that "first", "second" and "third" are of different types.

[0100] In the description of the embodiments of the present application, words such as "exemplary", "for example", or "for illustration" are used to denote examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary", "for example", or "for illustration" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary", "for example", or "for illustration" is intended to present the relevant concepts in a specific manner.

[0101] In the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may represent A or B; "and / or" in the text is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0102] In some processes described in the embodiments of the present application, a plurality of operations or steps appear in a specific order. However, it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or may be executed in parallel. The serial numbers of the operations are only used to distinguish different operations, and the serial numbers themselves do not represent any execution order. Additionally, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0103] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above and includes several instructions for causing a terminal device to execute the methods described in various embodiments of the present application.

[0104] The above are only the preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structural or equivalent process transformation made by using the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A battery anti-theft system for a power battery, characterized in that The battery anti-theft system includes: A battery acquisition unit (2) powered by the power battery pack (1), which is installed on the power battery pack (1), and the battery acquisition unit (2) is used to acquire and update the status information of the power battery pack (1); A vehicle controller (4) that is hard-wired to the battery acquisition unit (2), and the vehicle controller (4) is configured as: When the hard-wired signal between the vehicle controller (4) and the battery acquisition unit (2) is disconnected and the status information of the power battery pack (1) shows an abnormality, the vehicle controller (4) sends an alarm signal.

2. The battery anti-theft system of the power battery according to claim 1, characterized in that, The battery anti-theft system further includes: A remote communication terminal (3) that is signal-connected to the vehicle controller (4), and the remote communication terminal (3) is used to receive the alarm signal of the vehicle controller (4) and send battery theft information to the receiving platform.

3. The battery anti-theft system of the power battery according to claim 1, characterized in that, It further includes: A battery management controller (12) that is signal-connected to the battery acquisition unit (2) and the vehicle controller (4), and the battery management controller (12) is used to receive the status information of the battery acquisition unit (2) and display the real-time status information and position information of each battery cell (11) in the power battery pack (1).

4. The battery anti-theft system of the power battery according to claim 3, characterized in that, It further includes: A timer (13) that is connected to the battery management controller (12), and the timer (13) is used to periodically wake up the battery management controller (12).

5. The battery anti-theft system of the power battery according to claim 4, characterized in that, It further includes: A low-voltage power supply (6) that is electrically connected to the battery management controller (12) and the vehicle controller (4).

6. The battery anti-theft system of the power battery according to claim 3, characterized in that, The battery acquisition unit (2) includes: An acquisition chip (21), and the acquisition chip (21) is installed on the battery cell (11).

7. A battery anti-theft method using the battery anti-theft system as described in claim 1, characterized in that, It includes: Using the battery acquisition unit (2) to update the status information of the power battery pack (1) in real time; Monitoring the on / off status of the hard-wired signal between the vehicle controller (4) and the battery acquisition unit (2), and controlling the vehicle controller (4) to perform actions according to the on / off status of the hard-wired signal; wherein, When the vehicle controller (4) maintains a hard-wired connection with the battery acquisition unit (2), the vehicle controller (4) is put into a sleep state; When the hard-wired signal between the vehicle controller (4) and the battery acquisition unit (2) is disconnected, the vehicle controller (4) is woken up and driven to send an alarm signal.

8. The battery anti-theft method according to claim 7, characterized in that, The using the battery acquisition unit (2) to update the status information of the power battery pack (1) in real time includes: Using the battery cell (11) with the highest voltage in the power battery pack (1) as the power supply battery to supply power to the battery acquisition unit (2); Periodically waking up the battery management controller (12) to calculate the voltage value of each battery cell (11), and replacing the power supply battery according to the real-time voltage values of all battery cells (11).

9. The battery anti-theft method according to claim 7, characterized in that, The waking up the vehicle controller (4) and driving the vehicle controller (4) to send an alarm signal includes: Waking up the vehicle controller (4) and driving the vehicle controller (4) to wake up the battery management controller (12); wherein, When the battery management controller (12) is awakened, the power battery pack (1) is subjected to a status check by the battery management controller (12), and the vehicle controller (4) determines whether to send an alarm signal according to the status check result; When the battery management controller (12) cannot be awakened, the vehicle controller (4) sends an alarm signal.

10. The battery anti-theft method according to claim 9, wherein, The status check of the power battery pack (1) by the battery management controller (12), and the vehicle controller (4) determines whether to send an alarm signal according to the status check result, including: When the battery management controller (12) detects that all the battery cells (11) are in normal status, the vehicle controller (4) reports a battery anti-theft system fault; When the battery management controller (12) detects that the status data of the battery cell (11) is lost, the vehicle controller (4) sends an alarm signal.

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