Safety control method for preventing illegal modification of motorcycle

Abstract

A safety control method for preventing illegal modification of a motorcycle is characterized by comprising the following steps: 1, constructing a motorcycle modification prevention control management system; 2, binding of the whole vehicle is completed, and the diagnostic tool generates a key set and sends the key set to a corresponding key library; 3, before the motorcycle is powered on, the encryption module obtains motor equipment information of the motor controller and carries out encoding encryption; 4, the battery encryption module decrypts the encrypted data of the motor; 5, the battery encryption module carries out decoding and legality authentication on the decryption data of the motor controller; 6, the battery encryption module obtains the battery equipment information of the battery system and carries out coding encryption; 7, the encryption module decrypts the battery encryption data; 8, the encryption module carries out decoding and legality authentication on the battery decryption data; 9, the motor controller and the battery system are successfully matched, and the motorcycle is normally powered on to work. The method has the advantages that unauthorized equipment can be prevented from getting on the vehicle for use and a user can be prevented from illegally refitting the vehicle, and equipment safety of the user is protected.

Description

Technical Field

[0001] The invention relates to the technical field of motorcycle safety detection, and in particular to a safety control method for preventing illegal modification of motorcycles. Background Art

[0002] At present, domestic electric motorcycle products have simple structures, weak power, and low technical requirements. Many users generally modify the three-electric system after purchase, such as increasing the power of the motor controller and replacing batteries with larger capacity.

[0003] As long as the existing batteries have similar dimensions, users can replace them with larger capacity battery packs to increase their range, but their reliability is often ignored.

[0004] Customers illegally adjust the parameters of the motor controller or replace the electronic control to improve its acceleration performance and maximum vehicle speed.

[0005] The power amplification of the motor controller will lead to excessive system power and excessive device temperature rise; excessive acceleration and high vehicle speed will create various risks of traffic safety accidents; and illegal battery replacement will not only fail to guarantee the quality of the battery, but may also cause it to be incompatible with the motorcycle's charging and discharging system, resulting in battery failure or even spontaneous combustion during use and charging.

[0006] Disadvantages of existing technology: The existing motor controller or VCU cannot accurately determine whether it is an original vehicle battery or a modified battery; at the same time, the battery cannot determine whether its corresponding electrical equipment is an original vehicle electronic control or a modified electronic control equipment, thus providing convenience for users to illegally modify it. Summary of the invention

[0007] The invention provides a safety control method for preventing illegal modification of motorcycles, which can prevent unauthorized equipment from being mounted and used and users from illegally modifying vehicles, thereby protecting the safety of users' equipment.

[0008] To achieve the above object, the present invention provides a safety control method for preventing illegal modification of motorcycles, the key of which is to include the following steps:

[0009] Step 1: Construct a motorcycle anti-modification control and management system, wherein the motorcycle anti-modification control and management system is provided with a diagnostic tool, a mobile user terminal and a manufacturer management platform, wherein the diagnostic tool and the mobile user terminal are wirelessly connected to the manufacturer management platform; the diagnostic tool is also connected to the motorcycle via a CAN diagnostic interface, and the mobile user terminal is wirelessly connected to the motorcycle; the motorcycle is provided with a motor controller and a battery system with one-to-one authentication matching, wherein a key library and an encryption module are provided in the motor controller, and a battery key library and a battery encryption module are provided in the battery system;

[0010] Step 2: The motorcycle is bound to the motor controller and the battery system. The manufacturer management platform generates the encryption key set a and the corresponding decryption key set b of the motor controller, the battery encryption key set c and the corresponding battery decryption key set d through an encryption algorithm, and sends the encryption key set a and the battery decryption key set c of the motor controller to the key library, and sends the decryption key set b and the battery encryption key set d of the motor controller to the battery key library;

[0011] Step 3: Before the motorcycle is powered on, the encryption module in the motor controller obtains the device information x1 of the motor controller, and encodes the device information x1 to obtain the motor controller encoding information x2;

[0012] The encryption module obtains the encryption key a in the key library i Encrypt the motor controller encoding information x2 to obtain motor controller encrypted data x3, and send the motor controller encoding information x2 and the motor controller encrypted data x3 to the battery system;

[0013] Step 4: The battery encryption module in the battery system obtains the corresponding motor controller decryption key b from the battery key library according to the motor controller encrypted data x3. i Decrypt the motor controller encrypted data x3. If the decryption is successful, the motor controller decrypted data x4 is obtained, and the process goes to step 5. If the decryption fails, the process goes to step 10.

[0014] Step 5: The battery encryption module compares the motor controller decrypted data x4 with the motor controller encoding information x2. When the motor controller decrypted data x4 is consistent with the motor controller encoding information x2, the process proceeds to step 6; otherwise, the process proceeds to step 10;

[0015] Step 6: The battery encryption module in the battery system obtains the battery device information y1 of the battery system, and encodes the battery device information y1 to obtain the battery encoding information y2;

[0016] The battery encryption module obtains the battery encryption key c in the battery key library i Encrypt the battery encoding information y2 to obtain battery encrypted data y3, and send the battery encoding information y2 and the battery encrypted data y3 to the motor controller;

[0017] Step 7: The encryption module in the motor controller obtains the corresponding battery decryption key d from the key library according to the battery encryption data y3. i Decrypt the battery encrypted data y3. If the decryption is successful, the battery decrypted data y4 is obtained, and the process goes to step 8. If the decryption fails, the process goes to step 10.

[0018] Step 8: The encryption module compares the battery decryption data y4 with the battery coding information y2. When the battery decryption data y4 is consistent with the battery coding information y2, the process proceeds to step 9; otherwise, the process proceeds to step 10;

[0019] Step 9: The motor controller and the battery system are successfully matched one-to-one, and the motorcycle is powered on and works normally;

[0020] Step 10: The one-to-one authentication matching between the motor controller and the battery system fails, the motor controller is prohibited from working, and the battery system is prohibited from starting the discharge function.

[0021] Through the above design, corresponding encryption modules and key libraries are set in the motor controller and battery system to realize the validity verification between modules to prevent illegal replacement; before use, the key is saved in the corresponding key library in advance, and external reading is prohibited; before power-on, the modules and the keys are verified for validity through the set keys under a certain delivery logic. Only when the legally recognized modules match, the three-electric system can be powered on normally, otherwise power-on should be prohibited.

[0022] All motorcycles can use a one-machine-one-key mode. Even if two motorcycles of the same model are swapped, authentication will fail due to inconsistent device keys, resulting in failure to use the device normally. This can effectively protect the user's device security.

[0023] Preferably, in step 2, the binding process of the motorcycle, the motor controller and the battery system is as follows:

[0024] S1: The mobile user terminal or the diagnostic tool obtains the device information x1, the battery device information y1 and the vehicle information of the motorcycle, and sends a binding request to the manufacturer management platform;

[0025] S2: The manufacturer management platform verifies the binding status of the motorcycle, the motor controller and the battery system according to the binding request. When the binding status of the motorcycle, the motor controller and the battery system are all unbound or unbound, enter S3; when the binding status of the motorcycle or the motor controller or the battery system is bound, the binding fails, and the manufacturer management platform records the current binding request and triggers a background security warning;

[0026] S3: The manufacturer management platform verifies whether the motorcycle, motor controller and battery system are legally authorized by the manufacturer based on the device information x1, battery device information y1 and the motorcycle's vehicle information. When the verification result is legal, the binding is successful; otherwise, the binding fails.

[0027] Through the above design, the binding of illegal terminals can be effectively avoided, and the behavior can be identified and prevented in a timely manner.

[0028] As a preferred embodiment: when a new module is added to the motorcycle, it is first unbound and then rebound; the unbinding process is as follows;

[0029] W1: The mobile user terminal or diagnostic tool obtains the device information x1, the battery device information y1 and the motorcycle's vehicle information, and sends an unbinding request to the manufacturer management platform;

[0030] W2: The manufacturer management platform verifies the binding status of the motorcycle, the motor controller and the battery system according to the unbinding request. When the binding status of the motorcycle, the motor controller and the battery system are all unbound or unbound, the process ends. When the binding status of the motorcycle, the motor controller and the battery system is mutually bound, the manufacturer management platform cancels the binding information of the motorcycle, the motor controller and the battery system and completes the unbinding.

[0031] W3: The manufacturer management platform cancels all keys of the key library and the battery key library.

[0032] Users can unbind device modules. After unbinding, all module binding information will be invalid and can be re-bound.

[0033] Preferably, in step 3, the motor controller device information x1 includes but is not limited to the specification model, production batch number, serial number and manufacturer information of the motor controller;

[0034] In step 6, the battery pack equipment information y1 includes but is not limited to the specification model, production batch number, serial number and manufacturer information of the battery pack.

[0035] As a preferred embodiment: the manufacturer management platform is provided with a manufacturer rental platform, and the mobile user terminal is installed with a rental APP;

[0036] When the mobile user initiates a rental order request to the manufacturer's rental platform through the rental APP, the diagnostic tool automatically unbinds and binds the motorcycle and the rented motor controller or battery system. The rental process is as follows:

[0037] L1: The mobile user terminal obtains device information corresponding to the motorcycle, the motor controller and the new battery system, generates rental order information, and sends the rental order information to the manufacturer rental platform;

[0038] L2: The manufacturer rental platform verifies the legitimacy of the motorcycle, motor controller and battery system according to the rental order information. When the verification result is legal, the original binding information of the motorcycle or motor controller or battery system in the order is unbound, and then the motorcycle, motor controller and battery system in the order are rebound to enter L3; when the verification result is illegal, the manufacturer rental platform sends an order rejection message to the mobile user terminal, and the process ends;

[0039] L3: The manufacturer rental platform dynamically generates a new motor controller encryption key set a and a corresponding decryption key set b, a battery encryption key set c and a corresponding battery decryption key set d, and sends them to the mobile user terminal;

[0040] L4: The mobile user terminal forwards the new motor controller's encryption key set a and the corresponding decryption key set b, the battery encryption key set c and the corresponding battery decryption key set d to the motor controller and battery system, updates the corresponding motor controller key library and battery key library, and completes the new lease binding.

[0041] Through the above design, the user's demand for battery replacement can be met, the application requirements of multiple scenarios can be met, and the practicality of the present invention is improved.

[0042] Preferably, in step 1, the diagnostic tool and the mobile user terminal are connected to the manufacturer management platform via a wireless communication network, the mobile user terminal is connected to the motorcycle via Bluetooth, and a CAN communication network is integrated in the motorcycle.

[0043] Preferably, in step 2, the encryption algorithm is either a symmetric encryption algorithm or an asymmetric encryption algorithm.

[0044] Depending on the different encryption modules of the controller, the encryption algorithm may be a symmetric encryption algorithm or an asymmetric encryption algorithm, so the encryption key and the decryption key may be the same or different.

[0045] The beneficial effects of the present invention are as follows: after adopting encryption technology, mutual verification is required before the modules are powered on to prevent unauthorized devices from being used on the vehicle. The verification data is transmitted or verified in an encrypted manner, which has high technical requirements and is difficult to modify, and can effectively prevent users from illegally modifying the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the process of the present invention;

[0047] Figure 2 This is the structural diagram of the motorcycle anti-modification control management system;

[0048] Figure 3 This is a schematic diagram of the vehicle-machine binding process in the embodiment;

[0049] Figure 4 This is a schematic diagram of the vehicle machine unbinding process in the embodiment;

[0050] Figure 5 Schematic diagram of the vehicle machine rental process in the embodiment. DETAILED DESCRIPTION

[0051] The present invention is further described in detail below in conjunction with the accompanying drawings and specific examples. The following examples or drawings are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0052] like Figure 1 A safety control method for preventing illegal modification of motorcycles is shown, comprising the following steps:

[0053] Step 1: Construct a motorcycle anti-modification control and management system, which is provided with a diagnostic tool, a mobile user terminal and a manufacturer management platform. The diagnostic tool and the mobile user terminal are connected to the manufacturer management platform via a wireless communication network; the diagnostic tool is also connected to the motorcycle via a CAN diagnostic interface, and the mobile user terminal is connected to the motorcycle via Bluetooth, such as Figure 2 As shown; the motorcycle is provided with a motor controller and a battery system with one-to-one authentication matching, the motor controller is provided with a key library and an encryption module, and the battery system is provided with a battery key library and a battery encryption module;

[0054] Step 2: The motorcycle is bound to the motor controller and the battery system. The manufacturer management platform generates the encryption key set a and the corresponding decryption key set b of the motor controller, the battery encryption key set c and the corresponding battery decryption key set d through an encryption algorithm, and sends the encryption key set a and the battery decryption key set c of the motor controller to the key library, and sends the decryption key set b and the battery encryption key set d of the motor controller to the battery key library;

[0055] Step 3: Before the motorcycle is powered on, the encryption module in the motor controller obtains the device information x1 of the motor controller, and encodes the device information x1 to obtain the motor controller encoding information x2;

[0056] The encryption module obtains the encryption key a in the key library i Encrypt the motor controller encoding information x2 to obtain motor controller encrypted data x3, and send the motor controller encoding information x2 and the motor controller encrypted data x3 to the battery system;

[0057] Step 4: The battery encryption module in the battery system obtains the corresponding motor controller decryption key b from the battery key library according to the motor controller encrypted data x3. iDecrypt the motor controller encrypted data x3. If the decryption is successful, the motor controller decrypted data x4 is obtained, and the process goes to step 5. If the decryption fails, the process goes to step 10.

[0058] Step 5: The battery encryption module compares the motor controller decrypted data x4 with the motor controller encoding information x2. When the motor controller decrypted data x4 is consistent with the motor controller encoding information x2, the process proceeds to step 6; otherwise, the process proceeds to step 10;

[0059] Step 6: The battery encryption module in the battery system obtains the battery device information y1 of the battery system, and encodes the battery device information y1 to obtain the battery encoding information y2;

[0060] The battery encryption module obtains the battery encryption key c in the battery key library i Encrypt the battery encoding information y2 to obtain battery encrypted data y3, and send the battery encoding information y2 and the battery encrypted data y3 to the motor controller;

[0061] Step 7: The encryption module in the motor controller obtains the corresponding battery decryption key d from the key library according to the battery encryption data y3. i Decrypt the battery encrypted data y3. If the decryption is successful, the battery decrypted data y4 is obtained, and the process goes to step 8. If the decryption fails, the process goes to step 10.

[0062] Step 8: The encryption module compares the battery decryption data y4 with the battery coding information y2. When the battery decryption data y4 is consistent with the battery coding information y2, the process proceeds to step 9; otherwise, the process proceeds to step 10;

[0063] Step 9: The motor controller and the battery system are successfully matched one-to-one, and the motorcycle is powered on and works normally;

[0064] Step 10: The one-to-one authentication matching between the motor controller and the battery system fails, the motor controller is prohibited from working, and the battery system is prohibited from starting the discharge function.

[0065] In step 3, the motor controller device information x1 includes the specification model, production batch number, serial number and manufacturer information of the motor controller;

[0066] In step 6, the battery pack equipment information y1 includes the specification model, production batch number, serial number and manufacturer information of the battery pack.

[0067] In step 2, the encryption algorithm is either a symmetric encryption algorithm or an asymmetric encryption algorithm.

[0068] like Figure 3 As shown: In step 2, the binding process of the motorcycle, the motor controller and the battery system is as follows:

[0069] S1: The mobile user terminal or the diagnostic tool obtains the device information x1, the battery device information y1 and the vehicle information of the motorcycle, and sends a binding request to the manufacturer management platform;

[0070] S2: The manufacturer management platform verifies the binding status of the motorcycle, the motor controller and the battery system according to the binding request. When the binding status of the motorcycle, the motor controller and the battery system are all unbound or unbound, enter S3; when the binding status of the motorcycle or the motor controller or the battery system is bound, the binding fails, and the manufacturer management platform records the current binding request and triggers a background security warning;

[0071] S3: The manufacturer management platform verifies whether the motorcycle, motor controller and battery system are legally authorized by the manufacturer based on the device information x1, battery device information y1 and the motorcycle's vehicle information. When the verification result is legal, the binding is successful; otherwise, the binding fails.

[0072] like Figure 4 As shown: when a new module is added to the motorcycle, it is first unbound and then rebound; the unbinding process is as follows;

[0073] W1: The mobile user terminal or diagnostic tool obtains the device information x1, the battery device information y1 and the motorcycle's vehicle information, and sends an unbinding request to the manufacturer management platform;

[0074] W2: The manufacturer management platform verifies the binding status of the motorcycle, the motor controller and the battery system according to the unbinding request. When the binding status of the motorcycle, the motor controller and the battery system are all unbound or unbound, the process ends. When the binding status of the motorcycle, the motor controller and the battery system is mutually bound, the manufacturer management platform cancels the binding information of the motorcycle, the motor controller and the battery system and completes the unbinding.

[0075] W3: The manufacturer management platform cancels all keys of the key library and the battery key library.

[0076] like Figure 5 As shown: the manufacturer management platform is provided with a manufacturer rental platform, and the mobile user terminal is installed with a rental APP;

[0077] When the mobile user initiates a rental order request to the manufacturer's rental platform through the rental APP, the diagnostic tool automatically unbinds and binds the motorcycle and the rented motor controller or battery system. The rental process is as follows:

[0078] L1: The mobile user terminal obtains device information corresponding to the motorcycle, the motor controller and the new battery system, generates rental order information, and sends the rental order information to the manufacturer rental platform;

[0079] L2: The manufacturer rental platform verifies the legitimacy of the motorcycle, motor controller and battery system according to the rental order information. When the verification result is legal, the original binding information of the motorcycle or motor controller or battery system in the order is unbound, and then the motorcycle, motor controller and battery system in the order are rebound to enter L3; when the verification result is illegal, the manufacturer rental platform sends an order rejection message to the mobile user terminal, and the process ends;

[0080] L3: The manufacturer rental platform dynamically generates a new motor controller encryption key set a and a corresponding decryption key set b, a battery encryption key set c and a corresponding battery decryption key set d, and sends them to the mobile user terminal;

[0081] L4: The mobile user terminal forwards the new motor controller's encryption key set a and the corresponding decryption key set b, the battery encryption key set c and the corresponding battery decryption key set d to the motor controller and battery system, updates the corresponding motor controller key library and battery key library, and completes the new lease binding.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety control method for preventing illegal modification of motorcycles, characterized in that: The following steps are involved: Step 1: Construct a motorcycle anti-modification control and management system, wherein the motorcycle anti-modification control and management system is provided with a diagnostic tool, a mobile user terminal and a manufacturer management platform, wherein the diagnostic tool and the mobile user terminal are wirelessly connected to the manufacturer management platform; the diagnostic tool is also connected to the motorcycle via a CAN diagnostic interface, and the mobile user terminal is wirelessly connected to the motorcycle; the motorcycle is provided with a motor controller and a battery system with one-to-one authentication matching, wherein a key library and an encryption module are provided in the motor controller, and a battery key library and a battery encryption module are provided in the battery system; Step 2: The motorcycle is bound to the motor controller and the battery system. The manufacturer management platform generates the encryption key set a and the corresponding decryption key set b of the motor controller, the battery encryption key set c and the corresponding battery decryption key set d through an encryption algorithm, and sends the encryption key set a and the battery decryption key set c of the motor controller to the key library, and sends the decryption key set b and the battery encryption key set d of the motor controller to the battery key library; Step 3: Before the motorcycle is powered on, the encryption module in the motor controller obtains the device information x1 of the motor controller, and encodes the device information x1 to obtain the motor controller encoding information x2; The encryption module obtains the encryption key a in the key library i Encrypt the motor controller encoding information x2 to obtain motor controller encrypted data x3, and send the motor controller encoding information x2 and the motor controller encrypted data x3 to the battery system; Step 4: The battery encryption module in the battery system obtains the corresponding motor controller decryption key b from the battery key library according to the motor controller encrypted data x3. i Decrypt the motor controller encrypted data x3. If the decryption is successful, the motor controller decrypted data x4 is obtained, and the process goes to step 5. If the decryption fails, the process goes to step 10. Step 5: The battery encryption module compares the motor controller decrypted data x4 with the motor controller encoding information x2. When the motor controller decrypted data x4 is consistent with the motor controller encoding information x2, the process proceeds to step 6; otherwise, the process proceeds to step 10; Step 6: The battery encryption module in the battery system obtains the battery device information y1 of the battery system, and encodes the battery device information y1 to obtain the battery encoding information y2; The battery encryption module obtains the battery encryption key c in the battery key library i Encrypt the battery encoding information y2 to obtain battery encrypted data y3, and send the battery encoding information y2 and the battery encrypted data y3 to the motor controller; Step 7: The encryption module in the motor controller obtains the corresponding battery decryption key d from the key library according to the battery encryption data y3. i Decrypt the battery encrypted data y3. If the decryption is successful, the battery decrypted data y4 is obtained, and the process goes to step 8. If the decryption fails, the process goes to step 10. Step 8: The encryption module compares the battery decryption data y4 with the battery coding information y2. When the battery decryption data y4 is consistent with the battery coding information y2, the process proceeds to step 9. Otherwise, go to step 10; Step 9: The motor controller and the battery system are successfully matched one-to-one, and the motorcycle is powered on and works normally; Step 10: The one-to-one authentication matching between the motor controller and the battery system fails, the motor controller is prohibited from working, and the battery system is prohibited from starting the discharge function.

2. The safety control method for preventing illegal modification of motorcycles according to claim 1 is characterized in that: In step 2, the binding process of the motorcycle, the motor controller and the battery system is as follows: S1: The mobile user terminal or the diagnostic tool obtains the device information x1, the battery device information y1 and the vehicle information of the motorcycle, and sends a binding request to the manufacturer management platform; S2: The manufacturer management platform verifies the binding status of the motorcycle, the motor controller and the battery system according to the binding request. When the binding status of the motorcycle, the motor controller and the battery system are all unbound or unbound, enter S3; when the binding status of the motorcycle or the motor controller or the battery system is bound, the binding fails, and the manufacturer management platform records the current binding request and triggers a background security warning; S3: The manufacturer management platform verifies whether the motorcycle, motor controller and battery system are legally authorized by the manufacturer based on the device information x1, battery device information y1 and the motorcycle's vehicle information. When the verification result is legal, the binding is successful; otherwise, the binding fails.

3. The safety control method for preventing illegal modification of motorcycles according to claim 2 is characterized in that: When a new module is added to the motorcycle, it is first unbound and then rebound; the unbinding process is as follows; W1: The mobile user terminal or diagnostic tool obtains the device information x1, the battery device information y1 and the motorcycle's vehicle information, and sends an unbinding request to the manufacturer management platform; W2: The manufacturer management platform verifies the binding status of the motorcycle, the motor controller and the battery system according to the unbinding request. When the binding status of the motorcycle, the motor controller and the battery system are all unbound or unbound, the process ends. When the binding status of the motorcycle, the motor controller and the battery system is mutually bound, the manufacturer management platform cancels the binding information of the motorcycle, the motor controller and the battery system and completes the unbinding. W3: The manufacturer management platform cancels all keys of the key library and the battery key library.

4. The safety control method for preventing illegal modification of motorcycles according to claim 1 is characterized in that: In step 3, the motor controller device information x1 includes but is not limited to the specification model, production batch number, serial number and manufacturer information of the motor controller; In step 6, the battery pack equipment information y1 includes but is not limited to the specification model, production batch number, serial number and manufacturer information of the battery pack.

5. The safety control method for preventing illegal modification of motorcycles according to claim 2 is characterized in that: The manufacturer management platform is provided with a manufacturer rental platform, and the mobile user terminal is installed with a rental APP; When the mobile user initiates a rental order request to the manufacturer's rental platform through the rental APP, the diagnostic tool automatically unbinds and binds the motorcycle and the rented motor controller or battery system. The rental process is as follows: L1: The mobile user terminal obtains device information corresponding to the motorcycle, the motor controller and the new battery system, generates rental order information, and sends the rental order information to the manufacturer rental platform; L2: The manufacturer rental platform verifies the legitimacy of the motorcycle, motor controller and battery system according to the rental order information. When the verification result is legal, the original binding information of the motorcycle or motor controller or battery system in the order is unbound, and then the motorcycle, motor controller and battery system in the order are rebound to enter L3; when the verification result is illegal, the manufacturer rental platform sends an order rejection message to the mobile user terminal, and the process ends; L3: The manufacturer rental platform dynamically generates a new motor controller encryption key set a and a corresponding decryption key set b, a battery encryption key set c and a corresponding battery decryption key set d, and sends them to the mobile user terminal; L4: The mobile user terminal forwards the new motor controller's encryption key set a and the corresponding decryption key set b, the battery encryption key set c and the corresponding battery decryption key set d to the motor controller and battery system, updates the corresponding motor controller key library and battery key library, and completes the new lease binding.

6. The safety control method for preventing illegal modification of motorcycles according to claim 1 is characterized in that: In step 1, the diagnostic tool and the mobile user terminal are connected to the manufacturer management platform via a wireless communication network, and the mobile user terminal is connected to the motorcycle via Bluetooth, and a CAN communication network is integrated in the motorcycle.

7. The safety control method for preventing illegal modification of motorcycles according to claim 1 is characterized in that: In step 2, the encryption algorithm is either a symmetric encryption algorithm or an asymmetric encryption algorithm.

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