CN114274779A - Device and method for collecting temperature information and controlling early warning of new energy electric vehicle - Google Patents

Device and method for collecting temperature information and controlling early warning of new energy electric vehicle Download PDF

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CN114274779A
CN114274779A CN202210052018.0A CN202210052018A CN114274779A CN 114274779 A CN114274779 A CN 114274779A CN 202210052018 A CN202210052018 A CN 202210052018A CN 114274779 A CN114274779 A CN 114274779A
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temperature
battery
motor
early warning
energy electric
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CN114274779B (en
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张兴华
张瑞民
李平
徐利强
刘堂俊
霍梦楠
李春林
冯忠友
陈真
王世超
周中荣
康科超
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Chengdu Automobile Vocational And Technical School
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Chengdu Automobile Vocational And Technical School
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Abstract

The invention belongs to the technical field of new energy electric vehicles, and discloses a device and a method for collecting temperature information acquisition and early warning control of a new energy electric vehicle, wherein a battery temperature detection component and a motor temperature detection component of the device for collecting temperature information acquisition and early warning control of the new energy electric vehicle are respectively connected with a data acquisition unit through signals, and the data acquisition unit and a voice alarm are respectively connected with a vehicle-mounted controller; the battery temperature detection assembly and the motor temperature detection assembly are respectively provided with a plurality of wireless temperature detectors. The battery temperature detection assembly and the motor temperature detection assembly are arranged to respectively detect the temperature parameters of the battery and the motor, and the battery temperature detection assembly and the motor temperature detection assembly are respectively arranged to be a plurality of wireless temperature detectors to detect the temperatures of different positions of the battery and the motor, so that the real-time performance of temperature detection can be effectively improved, the laying of a line is omitted, and the installation is convenient.

Description

Device and method for collecting temperature information and controlling early warning of new energy electric vehicle
Technical Field
The invention belongs to the technical field of new energy electric vehicles, and particularly relates to a device and a method for collecting temperature information and controlling early warning of a new energy electric vehicle.
Background
At present, the new forms of energy electric motor car is a novel power source car, and most new forms of energy electric motor cars adopt electric power as the motive power, and the polymer lithium cell of large capacity is preferred, and the battery can produce the heat in charging and the discharge process, and the too high life and the working property that can influence the lithium cell of temperature, consequently are necessary to the inspection of the temperature of new forms of energy electric motor car battery main part. The temperature detection device of the existing new energy electric vehicle is connected through wires, the circuit laying is complex, and the installation, the disassembly and the replacement are also complex.
Some current temperature-detecting device for new forms of energy electric motor car only carry out temperature detection to the battery, do not detect the temperature of motor, can't protect the operation of motor, do not detect every battery to the device that detects battery temperature moreover yet mostly, and the testing result is not comprehensive enough.
Through the above analysis, the problems and defects of the prior art are as follows: the temperature detection mode of the existing new energy electric vehicle can only detect the temperature of a single detection point, the temperature detection accuracy is low, and the connecting line is complex and is not easy to install.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device and a method for collecting temperature information and controlling early warning of a new energy electric vehicle.
The device for collecting temperature information and controlling early warning of the new energy electric vehicle, which is realized in the invention, is provided with the following components: the device comprises a battery temperature detection assembly, a motor temperature detection assembly, a data acquisition unit and a voice alarm;
the battery temperature detection assembly and the motor temperature detection assembly are respectively connected with a data collector through signals, and the data collector and the voice alarm are respectively connected with the vehicle-mounted controller through a connecting circuit;
the battery temperature detection assembly is provided with a plurality of wireless temperature detectors which are arranged at different positions outside the automobile battery;
the motor temperature detection assembly is provided with a plurality of wireless temperature detectors which are arranged at different positions outside the motor of the automobile.
In one embodiment, the wireless temperature detector is provided with a shell, an annular magnet is embedded at the lower end of the shell, an operation controller, a temperature sensor and a first ZigBee signal transmitter are fixed in the middle of the shell, a detection end of the temperature sensor is located in the middle of the annular magnet, the temperature sensor and the first ZigBee signal transmitter are respectively connected with the operation controller through a connecting circuit, and the first ZigBee signal transmitter is connected with a data acquisition unit through a wireless signal.
In one embodiment, a storage battery is fixed inside the shell, a charging port is embedded at the outer end of the shell, and the inner side of the charging port is connected with the storage battery through a connecting line;
the inside of the shell is fixed with a buzzer, and the buzzer is connected with the operation controller through a connecting circuit.
In one embodiment, the data acquisition unit is provided with a mounting box, a single chip microcomputer, a second ZigBee signal transmitter and a memory are arranged on the inner side of the mounting box, and the single chip microcomputer is connected with the second ZigBee signal transmitter and the memory through a connecting circuit.
In one embodiment, a plurality of mounting plates are fixed at the bottom edge of the mounting box through screws, and a long-strip-shaped fixing hole is formed in the middle of each mounting plate; the inside of the mounting box is fixed with a GSM remote signal transmitter, and the GSM remote signal transmitter is connected with the single chip microcomputer through a connecting line.
Another object of the present invention is to provide a new energy electric vehicle temperature information collection and early warning control method for implementing the new energy electric vehicle temperature information collection and early warning control device, wherein the new energy electric vehicle temperature information collection and early warning control method includes:
the voice alarm and the data collector are respectively connected with a vehicle-mounted controller of the electric automobile, and the data collector is fixed through the mounting plate and the strip-shaped fixing hole; the plurality of wireless temperature detectors are respectively arranged at different positions on the surfaces of the automobile battery and the automobile motor and are adsorbed and fixed by the annular magnets; detecting temperature parameters of the battery and the motor respectively;
the temperature sensor collects temperature data, the collected temperature data are transmitted to the data collector through the first ZigBee signal transmitter and the second ZigBee signal transmitter, the data collector transmits the collected data to the vehicle-mounted controller for detection and local storage through the memory, and when the vehicle-mounted controller detects that the temperature data are abnormal, voice alarm reminding is timely carried out on abnormal states through the voice alarm;
and the running controller in the wireless temperature detector which detects the abnormity controls the buzzer to send out an alarm sound, so that a fault point is determined in time.
In one embodiment, the method for detecting whether the temperature data is abnormal by the vehicle-mounted controller comprises the following steps:
(1) firstly, the vehicle-mounted controller selects a temperature random number s' belonging to Zpλ 'is randomly chosen for i ∈ {1, …, l }, all'i,γ′i∈ZpAnd calculating the temperature parameters of the battery and the motor as follows:
Figure BDA0003474595970000031
temperature parameter CT of battery and motor processed by output partout＝{s′,C0,(Ci,1,Ci,2,λ′i,γ′i)i∈{1,…,l}}；
(2) The temperature parameter calculating chip of the vehicle-mounted controller receives the CToutThen, whether the result is correct or not is verified, and first, the result is checked
Figure BDA0003474595970000032
Whether the result is true or not; if the result is not true, directly outputting b to be 0, and representing that the calculated result is incorrect; otherwise, for i e {1, …, l }, the temperature parameter calculation chip of the vehicle-mounted controller calculates:
ti＝(aλ′i-vρ(i)·γi-H(ρ(i))·γi)mod p；
Figure BDA0003474595970000041
then, a security parameter r is selected, and s is randomly selected1,…,sl∈{0,1}rThe CA selects a random number a ∈ ZpAnd calculating:
Figure BDA0003474595970000042
Figure BDA0003474595970000043
if it is not
Figure BDA0003474595970000044
The output b is 1, which indicates that the calculation result is correct; otherwise, the output b is equal to 0, which indicates that the result is wrong;
(3) the temperature parameter calculation chip of the vehicle-mounted controller verifies the CToutIf the attribute is correct, the rest processing operation is continuously finished, wherein A represents an l multiplied by n matrix, and l is the total number of the attribute; the function rho maps each row of the matrix into an attribute, and a temperature parameter calculation chip of the vehicle-mounted controller firstly selects a random number s ∈ Z equal to a set valuepAnd a random vector
Figure BDA0003474595970000045
Wherein, y2,…,ynIs used to share s; for i ∈ {1, …, l }, calculate
Figure BDA0003474595970000046
AiRepresents the ith row of matrix A; then, γ is randomly selected again1,γ2,…,γl∈ZpAnd calculating the temperature parameters of the battery and the motor as follows:
Figure BDA0003474595970000047
wherein, C', Ci,3,Ci,4For correcting s, λi,γi；CvFor verifying the processed result; g1，g2Is G1，G2Finally, the temperature parameter CT of the complete battery and the complete motor is output as { C, C', C ═ C0,(Ci,1,Ci,2,Ci,3,Ci,4)i∈{1,…,l},Cv,(A,ρ)}。
In one embodiment, the method of determining a point of failure comprises:
μkand dkRespectively representing the delay from the wireless temperature detector to the operation controller and the delay from the operation controller to the actuator caused by the temperature detection network, and respectively taking values in a finite set gamma {0, …, mu } and theta {0, …, d }, and respectively obtaining a transition probability matrix G ═ lambda [ [ lambda ] ]ij]，H＝[πrs]，λijAnd pirsThe following were used:
λij＝Prob{μk+1＝j|μk＝i},πrs＝Prob{dk+1＝s|dk＝r}
in the formula ofij≥0，
Figure BDA0003474595970000051
Random variable alpha with value of 0,1k,βkRespectively indicating that data packets between the wireless temperature detector and the operation controller and between the operation controller and the actuator are lost, and indicating that the data packets are successfully transmitted when the value of the random variable is 1; otherwise, the data packet transmission failure is represented, and the following characteristics are satisfied:
Prob{αk＝1}＝E{αk}＝a,
Prob{αk＝0}＝1-a,
Var{αk}＝E{(αk-a)2}＝(1-a)a＝b2,
Prob{βk＝1}＝E{βk}＝c,
Prob{βk＝0}＝1-c,
Var{βk}＝E{(βk-c)2}＝(1-c)c＝e2,
wherein Prob {. cndot }, E {. cndot } and Var {. cndot } are probability, expectation and variance, respectively, and a, b and E are positive real numbers;
the temperature detection network state equation is as follows:
Figure BDA0003474595970000052
wherein xk∈RwIs a vector of the states of the system,
Figure BDA0003474595970000053
is the system control input vector, yk∈RgIs a systematic measurement output vector, fk∈RpIs a system fault signal, dk∈RqIs an external interference signal A of limited energyp，Bp，Bd，Bf，CfIs a constant matrix of appropriate dimensions.
In one embodiment, the fault detector is constructed on the run controller side:
Figure BDA0003474595970000061
wherein
Figure BDA0003474595970000062
Is a fault detector state vector that is,
Figure BDA0003474595970000063
is the fault detector output vector, rk∈RqIs the residual vector, V is the residual gain matrix, and L is the residual gain matrix to be determined.
In one embodiment, the fault detector receives a system output
Figure BDA0003474595970000064
And control inputs acting on the controlled object
Figure BDA0003474595970000065
Respectively expressed as:
Figure BDA0003474595970000066
the following feedback control law is adopted:
Figure BDA0003474595970000067
the following state estimation error and residual error are defined respectively:
Figure BDA0003474595970000068
rek＝rk-fk
defining an augmented vector
Figure BDA0003474595970000069
The closed loop system equation is obtained as follows:
Figure BDA00034745959700000610
wherein
Figure BDA00034745959700000611
C＝[0 -Cp],I1＝I -I∈Rn×2n,
Figure BDA00034745959700000612
I3＝0 I∈Rq×(p+q)。
By combining all the technical schemes, the invention has the advantages and positive effects that:
the battery temperature detection assembly and the motor temperature detection assembly are arranged to respectively detect the temperature parameters of the battery and the motor, so that the detection is comprehensive, and the voice alarm can be used for timely carrying out voice alarm reminding on abnormal states; through setting up battery temperature detect assembly and motor temperature detect assembly respectively to a plurality of wireless thermodetector, can detect the temperature of the different positions of battery and motor, can effectively improve the real-time of temperature detection, guarantee the degree of accuracy and the reliability of testing result, save laying of circuit moreover, simple to operate.
The wireless temperature detector can be quickly and fixedly installed through the annular magnet, the ZigBee signal transmitter is used for signal transmission, power consumption can be effectively reduced, the service life is prolonged, electric quantity supplement can be conveniently carried out on an internal storage battery through the charging port, an alarm sound can be sent out through the buzzer when the temperature is too high, and the position of the alarm point can be conveniently confirmed.
The data acquisition unit can utilize the memory to store cycle data so as to realize local storage of detection data, the mounting box can be conveniently fixed through the mounting plate and the strip-shaped fixing hole, the detection result can be sent to a remote monitoring terminal through the GSM remote signal transmitter, and remote monitoring can be realized.
The comprehensive mathematical model of the temperature detection network, which simultaneously comprises the delay from the wireless temperature detector to the operation controller, the packet loss, the delay from the operation controller to the actuator and the packet loss, has important theoretical significance for perfecting the temperature control theory, and simultaneously, the fault detector is capable of sensitively detecting the fault, namely the abnormity based on the temperature by the aid of the collaborative design method and practice, so that the comprehensive mathematical model of the temperature detection network has important practical significance for reducing loss caused by the fault and improving the product quality.
The intelligent control of the vehicle-mounted controller provides technical support for temperature anomaly detection and data processing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for collecting temperature information and performing early warning control on a new energy electric vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a wireless temperature detector according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a data collector provided in an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the interior of the wireless temperature detector according to the embodiment of the present invention.
Fig. 5 is a flowchart of a new energy electric vehicle temperature information acquisition and early warning control method provided by the embodiment of the invention.
In the figure: 1. a battery temperature detection assembly; 2. a voice alarm; 3. a vehicle-mounted controller; 4. a motor temperature detection assembly; 5. an automotive electric machine; 6. a data acquisition unit; 7. an automotive battery; 8. a housing; 9. a ring magnet; 10. an operation controller; 11. a temperature sensor; 12. a first ZigBee signal transmitter; 13. a storage battery; 14. a charging port; 15. a buzzer; 16. mounting a box; 17. a single chip microcomputer; 18. a second ZigBee signal transmitter; 19. a memory; 20. mounting a plate; 21. a strip-shaped fixing hole; 22. GSM remote signal transmitter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail in one embodiment with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a device and a method for collecting temperature information and controlling early warning of a new energy electric vehicle, and the invention is described in detail below by combining with the attached drawings.
As shown in fig. 1, the device for collecting temperature information and performing early warning control on a new energy electric vehicle provided by the embodiment of the invention comprises: the device comprises a battery temperature detection component 1, a voice alarm 2, a vehicle-mounted controller 3, a motor temperature detection component 4 and a data acquisition unit 6.
The battery temperature detection component 1 and the motor temperature detection component 4 are respectively connected with a data acquisition unit 6 through signals, and the data acquisition unit 6 and the voice alarm 2 are respectively connected with the vehicle-mounted controller 3 through a connecting circuit; the battery temperature detection assembly 1 is provided with a plurality of wireless temperature detectors which are arranged at different positions outside the automobile battery 7; the motor temperature detection assembly 4 is provided with a plurality of wireless temperature detectors which are arranged at different positions outside the automobile motor 5.
As shown in fig. 2, the wireless temperature detector in the embodiment of the present invention is provided with a housing 8, an annular magnet 9 is embedded in a lower end of the housing 8, an operation controller 10, a temperature sensor 11 and a first ZigBee signal transmitter 12 are fixed in the middle of the housing 8, a detection end of the temperature sensor 11 is located in the middle of the annular magnet 9, the temperature sensor 11 and the first ZigBee signal transmitter 12 are respectively connected with the operation controller 10 through a connection circuit, and the first ZigBee signal transmitter 12 is connected with the data collector 6 through a wireless signal. Can carry out quick fixed mounting through annular magnetite 9, utilize zigBee signal transmission ware to carry out signal transmission, can effectively reduce the consumption, increase of service life. A storage battery 13 is fixed inside the shell 8, a charging port 14 is embedded at the outer end of the shell 8, and the inner side of the charging port 14 is connected with the storage battery 13 through a connecting circuit. The internal battery 13 can be conveniently replenished with electricity through the charging port 14. A buzzer 15 is fixed on the inner side of the shell 8, and the buzzer 15 is connected with the operation controller 10 through a connecting line. The buzzer 15 can give out alarm sound when the temperature is too high, so that the position of the alarm point can be conveniently confirmed.
As shown in fig. 3 and 4, the data acquisition unit 6 in the embodiment of the present invention is provided with a mounting box 16, a plurality of mounting plates 20 are fixed to the bottom edge of the mounting box 16 through screws, and a strip-shaped fixing hole 21 is formed in the middle of each mounting plate 20. The mounting plate 20 and the elongated fixing hole 21 facilitate the fixing of the mounting box 16. The inner side of the mounting box 16 is provided with a single chip microcomputer 17, a second ZigBee signal transmitter 18 and a memory 19, and the single chip microcomputer 17 is connected with the second ZigBee signal transmitter 18 and the memory 19 through a connecting line. The memory 19 can be used for cyclic data storage, so that local storage of the detection data can be realized. The inside of the mounting box 16 is also fixed with a GSM remote signal transmitter 22, and the GSM remote signal transmitter 22 is connected with the single chip microcomputer 17 through a connecting line. The detection result can be transmitted to a remote monitoring terminal through the GSM remote signal transmitter 22, so that remote monitoring can be realized.
The technical solution of the present invention is further described below with reference to specific examples.
Example 1
The invention provides a vehicle-mounted controller 3, and a method for detecting whether temperature data is abnormal by the vehicle-mounted controller 3 comprises the following steps:
(1) the vehicle-mounted controller 3 firstly selects a temperature random number s' belonging to Zpλ 'is randomly chosen for i ∈ {1, …, l }, all'i,γ′i∈ZpAnd calculating the temperature parameters of the battery and the motor as follows:
Figure BDA0003474595970000101
temperature parameter CT of battery and motor processed by output partout＝{s′,C0,(Ci,1,Ci,2,λ′i,γ′i)i∈{1,…,l}}；
(2) The temperature parameter calculating chip of the vehicle-mounted controller 3 receives the CToutThen, whether the result is correct or not is verified, and first, the result is checked
Figure BDA0003474595970000102
Whether the result is true or not; if the result is not true, directly outputting b to be 0, and representing that the calculated result is incorrect; otherwise, for i ∈ {1, …, l }, the temperature parameter calculation chip of the vehicle-mounted controller 3 calculates:
ti＝(aλ′i-vρ(i)·γi-H(ρ(i))·γi)mod p；
Figure BDA0003474595970000103
then, a security parameter r is selected, and s is randomly selected1,…,sl∈{0,1}rThe CA selects a random number a ∈ ZpAnd calculating:
Figure BDA0003474595970000111
Figure BDA0003474595970000112
if it is not
Figure BDA0003474595970000113
The output b is 1, which indicates that the calculation result is correct; otherwise, the output b is equal to 0, which indicates that the result is wrong;
(3) the temperature parameter calculation chip of the vehicle-mounted controller 3 verifies CToutIf the attribute is correct, the rest processing operation is continuously finished, wherein A represents an l multiplied by n matrix, and l is the total number of the attribute; the function rho maps each row of the matrix into an attribute, and a temperature parameter calculation chip of the vehicle-mounted controller 3 firstly selects a random number s ∈ Z equal to a set valuepAnd a random vector
Figure BDA0003474595970000114
Wherein, y2,…,ynIs used to share s; for i ∈ {1, …, l }, calculate
Figure BDA0003474595970000115
AiRepresents the ith row of matrix A; then, γ is randomly selected again1,γ2,…,γl∈ZpAnd calculating the temperature parameters of the battery and the motor as follows:
Figure BDA0003474595970000116
wherein, C', Ci,3,Ci,4For correcting s, λi,γi；CvFor verifying the processed result; g1，g2Is G1，G2Finally, the temperature parameter CT of the complete battery and the complete motor is output as { C, C', C ═ C0,(Ci,1,Ci,2,Ci,3,Ci,4)i∈{1,…,l},Cv,(A,ρ)}。
Example 2
As shown in fig. 5, the invention provides a temperature information collection and early warning control method for a new energy electric vehicle, which comprises the following steps:
and S101, respectively connecting the voice alarm 2 and the data collector 6 to a vehicle-mounted controller 3 of the electric vehicle, and fixing the data collector 6 through the mounting plate 20 and the strip-shaped fixing hole 21. A plurality of wireless temperature detectors are respectively arranged on different positions of the surfaces of an automobile battery 7 and an automobile motor 5 and are adsorbed and fixed through a ring-shaped magnet 9. The temperature parameters of the battery and the motor can be detected respectively, and the detection is comprehensive.
S102, the temperature sensor 11 collects temperature data, the collected temperature data are transmitted to the data collector 6 through the first ZigBee signal transmitter 12 and the second ZigBee signal transmitter 18, the data collector 6 transmits the collected data to the vehicle-mounted controller 3 for detection and local storage through the memory 19, and when the vehicle-mounted controller 3 detects that the temperature data are abnormal, voice alarm reminding can be timely performed on abnormal states through the voice alarm 2.
S103, the operation controller 10 in the wireless temperature detector which detects the abnormity controls the buzzer 15 to give out alarm sound, so that maintenance personnel can determine a fault point in time.
Example 3
Based on embodiment 2, the method for determining the fault point includes:
μkand dkRespectively representing the delay from the wireless temperature detector to the vehicle-mounted controller 3 and the delay from the vehicle-mounted controller 3 to the actuator caused by the temperature detection network, respectively taking values in a finite set gamma {0, …, mu }, and theta {0, …, d }, respectively, and respectively obtaining a transition probability matrix G ═ lambda [ [ lambda ] ]ij]，H＝[πrs]，λijAnd pirsThe following were used:
λij＝Prob{μk+1＝j|μk＝i},πrs＝Prob{dk+1＝s|dk＝r}
in the formula ofij≥0，
Figure BDA0003474595970000121
Random variable alpha with value of 0,1k,βkRespectively indicating that data packets between the wireless temperature detector and the vehicle-mounted controller 3 and between the vehicle-mounted controller 3 and the actuator are lost, and indicating that the data packets are successfully transmitted when the random variable value is 1; otherwise, the data packet transmission failure is represented, and the following characteristics are satisfied:
Prob{αk＝1}＝E{αk}＝a,
Prob{αk＝0}＝1-a,
Var{αk}＝E{(αk-a)2}＝(1-a)a＝b2,
Prob{βk＝1}＝E{βk}＝c,
Prob{βk＝0}＝1-c,
Var{βk}＝E{(βk-c)2}＝(1-c)c＝e2,
wherein Prob {. cndot }, E {. cndot } and Var {. cndot } are probability, expectation and variance, respectively, and a, b and E are positive real numbers;
the temperature detection network state equation is as follows:
Figure BDA0003474595970000131
wherein xk∈RwIs a vector of the states of the system,
Figure BDA0003474595970000132
is the system control input vector, yk∈RgIs a systematic measurement output vector, fk∈RpIs a system fault signal, dk∈RqIs an external interference signal A of limited energyp，Bp，Bd，Bf，CfIs a constant matrix of appropriate dimensions.
Preferably, a fault detector is constructed at the on-board controller 3 end:
Figure BDA0003474595970000133
wherein
Figure BDA0003474595970000134
Is a fault detector state vector that is,
Figure BDA0003474595970000135
is the fault detector output vector, rk∈RqIs the residual vector, V is the residual gain matrix, and L is the residual gain matrix to be determined.
Preferably, the fault detector receives a system output
Figure BDA0003474595970000136
And control inputs acting on the controlled object
Figure BDA0003474595970000137
Respectively expressed as:
Figure BDA0003474595970000138
the following feedback control law is adopted:
Figure BDA0003474595970000139
the following state estimation error and residual error are defined respectively:
Figure BDA00034745959700001310
rek＝rk-fk
defining an augmented vector
Figure BDA0003474595970000141
The closed loop system equation is obtained as follows:
Figure BDA0003474595970000142
wherein
Figure BDA0003474595970000143
C＝[0 -Cp],I1＝I -I∈Rn×2n,
Figure BDA0003474595970000144
I3＝0 I∈Rq×(p+q)。
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a new forms of energy electric motor car collection temperature information gathers and early warning control's device which characterized in that, new forms of energy electric motor car collection temperature information gathers and early warning control's device is provided with: the device comprises a battery temperature detection assembly, a motor temperature detection assembly, a data acquisition unit and a voice alarm;
the battery temperature detection assembly and the motor temperature detection assembly are respectively connected with a data collector through signals, and the data collector and the voice alarm are respectively connected with the vehicle-mounted controller through a connecting circuit;
the battery temperature detection assembly is provided with a plurality of wireless temperature detectors which are arranged at different positions outside the automobile battery;
the motor temperature detection assembly is provided with a plurality of wireless temperature detectors which are arranged at different positions outside the motor of the automobile.
2. The new energy electric vehicle temperature information acquisition and early warning control device as claimed in claim 1, wherein the wireless temperature detector is provided with a housing, an annular magnet is embedded at the lower end of the housing, an operation controller, a temperature sensor and a first ZigBee signal transmitter are fixed in the middle of the housing, a detection end of the temperature sensor is located in the middle of the annular magnet, the temperature sensor and the first ZigBee signal transmitter are respectively connected with the operation controller through a connection circuit, and the first ZigBee signal transmitter is connected with the data collector through a wireless signal.
3. The device for collecting temperature information and controlling early warning as claimed in claim 2, wherein a storage battery is fixed inside the housing, a charging port is embedded at the outer end of the housing, and the inner side of the charging port is connected with the storage battery through a connecting line;
the inside of the shell is fixed with a buzzer, and the buzzer is connected with the operation controller through a connecting circuit.
4. The new energy electric vehicle temperature information acquisition and early warning control device as claimed in claim 1, wherein the data acquisition unit is provided with a mounting box, a single chip microcomputer, a second ZigBee signal transmitter and a memory are arranged on the inner side of the mounting box, and the single chip microcomputer is connected with the second ZigBee signal transmitter and the memory through a connecting circuit.
5. The new-energy electric vehicle temperature information acquisition and early warning control device as claimed in claim 4, wherein a plurality of mounting plates are fixed to the bottom edge of the mounting box through screws, and a long fixing hole is formed in the middle of each mounting plate; the inside of the mounting box is fixed with a GSM remote signal transmitter, and the GSM remote signal transmitter is connected with the single chip microcomputer through a connecting line.
6. A new energy electric vehicle set temperature information acquisition and early warning control method for realizing the device for acquiring and early warning control of the new energy electric vehicle set temperature information according to any one of claims 1 to 5, wherein the new energy electric vehicle set temperature information acquisition and early warning control method comprises the following steps:
the voice alarm and the data collector are respectively connected with a vehicle-mounted controller of the electric automobile, and the data collector is fixed through the mounting plate and the strip-shaped fixing hole; the plurality of wireless temperature detectors are respectively arranged at different positions on the surfaces of the automobile battery and the automobile motor and are adsorbed and fixed by the annular magnets; detecting temperature parameters of the battery and the motor respectively;
the temperature sensor collects temperature data, the collected temperature data are transmitted to the data collector through the first ZigBee signal transmitter and the second ZigBee signal transmitter, the data collector transmits the collected data to the vehicle-mounted controller for detection and local storage through the memory, and when the vehicle-mounted controller detects that the temperature data are abnormal, voice alarm reminding is timely carried out on abnormal states through the voice alarm;
and the running controller in the wireless temperature detector which detects the abnormity controls the buzzer to send out an alarm sound, so that a fault point is determined in time.
7. The new energy electric vehicle set temperature information acquisition and early warning control method according to claim 6, wherein the method for detecting whether the temperature data is abnormal by the vehicle-mounted controller comprises the following steps:
(1) firstly, the vehicle-mounted controller selects a temperature random number s' belonging to Zpλ 'is randomly chosen for i ∈ {1, …, l }, all'i,γ′i∈ZpAnd calculating the temperature parameters of the battery and the motor as follows:
Figure FDA0003474595960000031
temperature parameter CT of battery and motor processed by output partout＝{s′,C0,(Ci,1,Ci,2,λ′i,γ′i)i∈{1,…,l}}；
(2) The temperature parameter calculating chip of the vehicle-mounted controller receives the CToutThen, whether the result is correct or not is verified, and first, the result is checked
Figure FDA0003474595960000032
Whether the result is true or not; if the result is not true, directly outputting b to be 0, and representing that the calculated result is incorrect; otherwise, for i e {1, …, l }, the temperature parameter calculation chip of the vehicle-mounted controller calculates:
ti＝(aλ′i-vρ(i)·γi-H(ρ(i))·γi)mod p；
Figure FDA0003474595960000033
then, a security parameter r is selected, and s is randomly selected1,…,sl∈{0,1}rThe CA selects a random number a ∈ ZpAnd calculating:
Figure FDA0003474595960000034
Figure FDA0003474595960000035
if it is not
Figure FDA0003474595960000036
The output b is 1, which indicates that the calculation result is correct; otherwise, the output b is equal to 0, which indicates that the result is wrong;
(3) the temperature parameter calculation chip of the vehicle-mounted controller verifies the CToutIf the attribute is correct, the rest processing operation is continuously finished, wherein A represents an l multiplied by n matrix, and l is the total number of the attribute; the function rho maps each row of the matrix into an attribute, and a temperature parameter calculation chip of the vehicle-mounted controller firstly selects a random number s ∈ Z equal to a set valuepAnd a random vector
Figure FDA0003474595960000038
Wherein, y2,…,ynIs used to share s; for i ∈ {1, …, l }, calculate
Figure FDA0003474595960000037
AiRepresents the ith row of matrix A; then, γ is randomly selected again1,γ2,…,γl∈ZpAnd calculating the temperature parameters of the battery and the motor as follows:
Figure FDA0003474595960000041
wherein, C', Ci,3,Ci,4For correcting s, λi,γi；CvFor verifying the processed result; g1，g2Is G1，G2Finally, the temperature parameter CT of the complete battery and the complete motor is output as { C, C', C ═ C0,(Ci,1,Ci,2,Ci,3,Ci,4)i∈{1,…,l},Cv,(A,ρ)}。
8. The new energy electric vehicle set temperature information acquisition and early warning control method according to claim 6, wherein the method for determining the fault point comprises the following steps:
μkand dkRespectively representing the delay from the wireless temperature detector to the operation controller and the delay from the operation controller to the actuator caused by the temperature detection network, and respectively taking values in a finite set gamma {0, …, mu } and theta {0, …, d }, and respectively obtaining a transition probability matrix G ═ lambda [ [ lambda ] ]ij]，H＝[πrs]，λijAnd pirsThe following were used:
λij＝Prob{μk+1＝j|μk＝i},πrs＝Prob{dk+1＝s|dk＝r}
in the formula ofij≥0，
Figure FDA0003474595960000042
Random variable alpha with value of 0,1k,βkRespectively indicating that data packets between the wireless temperature detector and the operation controller and between the operation controller and the actuator are lost, and indicating that the data packets are successfully transmitted when the value of the random variable is 1; otherwise, the data packet transmission failure is represented, and the following characteristics are satisfied:
Prob{αk＝1}＝E{αk}＝a,
Prob{αk＝0}＝1-a,
Var{αk}＝E{(αk-a)2}＝(1-a)a＝b2,
Prob{βk＝1}＝E{βk}＝c,
Prob{βk＝0}＝1-c,
Var{βk}＝E{(βk-c)2}＝(1-c)c＝e2,
wherein Prob {. cndot }, E {. cndot } and Var {. cndot } are probability, expectation and variance, respectively, and a, b and E are positive real numbers;
the temperature detection network state equation is as follows:
Figure FDA0003474595960000051
wherein xk∈RwIs a vector of the states of the system,
Figure FDA0003474595960000052
is the system control input vector, yk∈RgIs a systematic measurement output vector, fk∈RpIs a system fault signal, dk∈RqIs an external interference signal A of limited energyp，Bp，Bd，Bf，CfIs a constant matrix of appropriate dimensions.
9. The new energy electric vehicle set temperature information acquisition and early warning control method according to claim 6, characterized in that a fault detector is constructed at the end of an operation controller:
Figure FDA0003474595960000053
wherein
Figure FDA0003474595960000054
Is a fault detector state vector that is,
Figure FDA0003474595960000055
is the fault detector output vector, rk∈RqIs the residual vector, V is the residual gain matrix, and L is the residual gain matrix to be determined.
10. The new energy electric vehicle set temperature information acquisition and early warning control method as claimed in claim 9, characterized in that the system output received by the fault detector
Figure FDA0003474595960000056
And control inputs acting on the controlled object
Figure FDA0003474595960000057
Respectively expressed as:
Figure FDA0003474595960000058
the following feedback control law is adopted:
Figure FDA0003474595960000059
the following state estimation error and residual error are defined respectively:
Figure FDA00034745959600000510
rek＝rk-fk
defining an augmented vector
Figure FDA0003474595960000061
The closed loop system equation is obtained as follows:
Figure FDA0003474595960000062
wherein
Figure FDA0003474595960000063
C＝[0 -Cp],I1＝I -I∈Rn×2n,
Figure FDA0003474595960000064
I3＝0I∈Rq×(p+q)。
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