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A fuel cell diagnostic access method
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An access method and fuel cell technology, applied in the direction of battery/fuel cell control devices, electrical devices, electric vehicles, etc., can solve the problems of reducing the module security of fuel cell systems, so as to ensure information security and prevent being hacked The effect of destruction
Active Publication Date: 2020-06-23
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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[0003] At present, fixed algorithms and operators are used for the diagnosis access verification of the whole vehicle. Access verification, but this method reduces the safety of the modules of the fuel cell system
Method used
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example 1
[0138] Example 1: For the access verification of the stack controller in the fuel cell system, the following methods are used:
[0139] The upper computer sends a verification command 061:72 03 01 to the stack controller to apply for access verification, and the read verification codes are 0x00, 0x11, 0x22, 0x33, 0x44, 0x55.
[0140] The safety level of the stack controller is level 1. Then the continuous array is: 0x00, 0x11, 0x22, 0x33, 0x44, 0x55; the seed code is: 0x00, 0x11, 0x22, 0x33, 0x44, 0x55; then: 0x00+0x00, 0x11+0x11, 0x22+0x22, 0x33+0x33 , 0x44+0x44, 0x55+0x55=0x00, 0x22, 0x44, 0x66, 0x88, 0xAA=0000 0000, 0010 0010, 0100 0100, 0110 0110, 1000 1000, 1010 1010, the key obtained by inverting it is: 1111 1011 1101, 1011 1011, 1001 1001, 0111 0111, 0101 0101 = 0xFF, 0xDD, 0xBB, 0x99, 0x77, 0x55.
example 2
[0141] Example 2: For the access verification of the air compressor controller in the fuel cell system, the following methods are used:
[0142] The upper computer sends a verification command 057:72 03 03 to the air compressor controller to apply for access verification, and the read verification subcodes are 0x62, 0x17, 0x3A, 0x42, 0x66, 0x30.
[0143] The safety level of the air compressor controller is level 2, and the number of verification cycles is 6; then the continuous array is: 0x89, 0x5C, 0xE8, 0x09, 0x99, 0xC0; the seed code is: 0x17, 0x32, 0x00, 0xE6, 0x26, 0x05 ; Then: [0x89, 0x5C, 0xE8, 0x09, 0x99, 0xC0]+[0x17, 0x32, 0x00, 0xE6, 0x26, 0x05]=[0xA0, 0x8E, 0xE8, 0xEF, 0xBF, 0xC5]=1010 0000, 1000 1110 , 1110 1000, 1110 1111, 1011 1111, 1100 0101, the key obtained by inverting it is: 0101 1111, 0111 0001, 0001 0111, 0001 0000, 0100 0000, 0011 1010 = 0x5F, 0x71, 030, 0x17, 0x.
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Abstract
The invention relates to the technical field of vehicle controller diagnosis, in particular to a fuel cell diagnosis connecting method. The method comprises the steps of starting diagnosis; sending achecking instruction to a controller to be diagnosed to perform first-stage safety checking; after the first-stage safety checking is passed, obtaining a production serial number of the controller anda seed code of a current operational cycle; according to the production serial number, obtaining a checking subcode and the security level; according to the checking subcode and the security level, obtaining a continuous array through calculation; according to the continuous array and the seed code, obtaining a secret key through calculation; sending the secret key to the controller so as to perform second-level security checking; checking whether the second-level security checking is passed or not, and if yes, diagnosing the controller. According to the fuel cell diagnosis connecting method,the fuel cellinformation security is ensured.
Description
technical field [0001] The present invention relates to the technical field of diagnosis of vehicle controllers, in particular to a fuel cell diagnosis access method. Background technique [0002] A hydrogen fuel cell is a new type of battery that generates electrical energy through the electrochemical action of hydrogen and oxygen. Its energy conversion efficiency can be as high as 60%-70%, and its actual efficiency is about twice that of an ordinary internal combustion engine. The chemical reaction process of the fuel cell will not produce harmful products, so it is a real "zero emission, zero pollution" vehicle, and it is the inevitable direction of new energy and clean power vehicles in the future. When the fuel cell system executes the diagnostic access operation of the upper computer of the controller, it is necessary to use the diagnostic access method for verification to ensure that the information of the fuel cell cannot be operated, monitored, and read at will to e...
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