CN109302120A - A kind of Control of Electric Vehicles method, electric car and computer readable storage medium - Google Patents
A kind of Control of Electric Vehicles method, electric car and computer readable storage medium Download PDFInfo
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- CN109302120A CN109302120A CN201811143936.4A CN201811143936A CN109302120A CN 109302120 A CN109302120 A CN 109302120A CN 201811143936 A CN201811143936 A CN 201811143936A CN 109302120 A CN109302120 A CN 109302120A
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- power device
- control
- current temperatures
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- electric vehicles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/68—Controlling or determining the temperature of the motor or of the drive based on the temperature of a drive component or a semiconductor component
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of Control of Electric Vehicles method, electric car and computer readable storage medium, the Control of Electric Vehicles method includes: the Current Temperatures T of power device adjacent position in acquisition and electric machine controller1；According to the Current Temperatures T1And default mapping relations calculate Current Temperatures T inside the power device2.The power control device for solving built-in temperature sensor existing for the electric machine controller temperature controller of electric car in the prior art is not easy to batch production or can not ensure in electric machine controller the problems such as the security monitoring of power device temperature without built-in temperature sensor there are thermometric accuracy is lower.
Description
Technical field
The present invention relates to electric vehicle engineering field more particularly to a kind of Control of Electric Vehicles methods, electric car and meter
Calculation machine readable storage medium storing program for executing.
Background technique
The electric machine controller of current new-energy automobile has (PCC) power (such as MOSFET) mostly, and (PCC) power (example
Such as MOSFET) an important performance number be temperature, generally there are two types of modes: (1) temperature for the temperature controlled acquisition of electric machine controller
Sensor is placed in (PCC) power (such as MOSFET) inside, and accuracy is higher, but due to temperature sensor patch welding procedure
It is more difficult, it is not easy to produce in batches.(2) temperature sensor is placed on the circuit board of (PCC) power (such as MOSFET) nearby,
The temperature of (PCC) power (such as MOSFET) is answered by the form feeling of heat transfer, and this method accuracy is lower.Therefore existing
There are the power control devices of built-in temperature sensor to be not easy to batch production or nothing for electric machine controller temperature controller in technology
There are the lower security monitorings that can not be ensured to power device temperature in electric machine controller of thermometric accuracy for built-in temperature sensor
The problems such as.
Summary of the invention
It is a primary object of the present invention to propose a kind of Control of Electric Vehicles method, electric car and computer-readable storage
Medium, it is intended to solve in the prior art electric machine controller temperature controller there are the power control devices of built-in temperature sensor not
It is easy to produce in batches or can not ensure to power device in electric machine controller without built-in temperature sensor there are thermometric accuracy is lower
The problems such as security monitoring of part temperature.
To achieve the above object, the present invention provides a kind of Control of Electric Vehicles method, the Control of Electric Vehicles method packet
Include following steps:
Obtain the Current Temperatures T with adjacent position outside power device in electric machine controller1；
According to the Current Temperatures T1And default mapping relations, calculate Current Temperatures T inside the power device2。
Preferably, the Control of Electric Vehicles method is further comprising the steps of:
According to the threshold value T of the power device internal temperature2maxAnd the default mapping relations, calculate the power device
Adjacent position temperature threshold T1max；
According to the temperature threshold T1maxExecute the Preservation tactics for being directed to the power device.
Preferably, according to the temperature threshold T1maxExecute be directed to the power device Preservation tactics the step of include:
By the Current Temperatures T1With the temperature threshold T1maxIt is compared；
In the Current Temperatures T1More than the temperature threshold T1maxWhen, protection control instruction is sent to electric machine controller.
Preferably, sending protection control instruction to electric machine controller includes assigning execution to electric machine controller to reduce power fortune
Row or the stopping the power device of the task.
Preferably, described according to the temperature threshold T1maxExecuting and being directed to the Preservation tactics of the power device further includes protecting
Tactful monitoring step is protected, the Preservation tactics monitoring step includes:
It obtains Preservation tactics and executes state；
As the Current Temperatures T1Less than the temperature threshold T1max, and the Preservation tactics are in when being performed state, hair
It terminates out and executes Preservation tactics instruction,
As the Current Temperatures T1When more than or equal to threshold value, the finger for maintaining the Preservation tactics instruction execution state is issued
It enables.
Preferably, the default mapping relations by acquiring multiple groups T under experimental conditions1And corresponding T2It is obtained.
Preferably, the threshold value T according to the power device internal temperature2maxAnd the default mapping relations, it obtains
The power device adjacent position temperature threshold T1maxThe step of include:
Obtain the threshold value T of the power device internal temperature2maxAnd the Current Temperatures T1With the Current Temperatures T2's
Related coefficient K；
According to T2max=K*T1maxCalculate the threshold value T of the power device internal temperature1max。
Preferably, the related coefficient K is by T in default experiment1And T2Linear fit obtains.
The present invention also proposes a kind of electric car, and the electric car includes: processor, memory and is stored in described deposit
On reservoir and the computer program that can run on the processor, the computer program are realized when being executed by the processor
The step of Control of Electric Vehicles method as described above.
The present invention also proposes a kind of computer readable storage medium, and calculating is stored on the computer readable storage medium
The step of machine program, the computer program realizes Control of Electric Vehicles method as described above when being executed by processor.
The control method of electric car provided by the invention, by obtaining and power device adjacent position in electric machine controller
Current Temperatures T1；According to the Current Temperatures T1And default mapping relations calculate Current Temperatures T inside the power device2.Solution
Having determined, there are the power control devices of built-in temperature sensor to be not easy to batch for electric machine controller temperature controller in the prior art
Production can not be ensured to power device temperature in electric machine controller without built-in temperature sensor there are thermometric accuracy is lower
The problems such as security monitoring.
Detailed description of the invention
Fig. 1 is the electric vehicle structure schematic diagram for the hardware running environment that the embodiment of the present invention is related to；
Fig. 2 is the flow diagram of the control method first embodiment of electric car of the present invention；
Fig. 3 is the flow diagram of the control method second embodiment of electric car of the present invention；
Fig. 4 is the flow diagram of the control method 3rd embodiment of electric car of the present invention；
Fig. 5 is the flow diagram of the control method fourth embodiment of electric car of the present invention；
Fig. 6 is the flow diagram of the 5th embodiment of control method of electric car of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
It is conflicting or when cannot achieve should people think that the combination of this technical solution is not present, also not the present invention claims protection
Within the scope of.
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to Fig.1, Fig. 1 is the electric vehicle structure schematic diagram for the hardware running environment that the embodiment of the present invention is related to.
As shown in Figure 1, the electric car may include: processor 1001, such as CPU, communication bus 1002, user interface
1003, network interface 1004, memory 1005.Wherein, communication bus 1002 is for realizing the connection communication between these components.
User interface 1003 may include display combination instrument (Meter), driving information input unit such as start switch, gear,
Braking and accelerator pedal etc.；Optional user interface 1003 can also include standard wireline interface and wireless interface.Network interface
1004 may include optionally standard wireline interface and wireless interface (such as WIFI interface).Memory 1005 can be high-speed RAM
Memory is also possible to stable memory (non-volatile memory), such as magnetic disk storage.Memory 1005 can
The storage device that can also be independently of aforementioned processor 1001 of choosing.
It will be understood by those skilled in the art that electric vehicle structure shown in Fig. 1 does not constitute the limit to electric car
It is fixed, it may include perhaps combining certain components or different component layouts than illustrating more or fewer components.It needs
Bright, the electric car includes all automobiles using power battery, including hybrid vehicle, plug-in hybrid
Automobile and fuel cell car etc..
In electric car shown in Fig. 1, network interface 1004 is mainly used for connecting network, and it is logical to carry out data with network
Letter；User interface 1003 is mainly used for connecting terminal, carries out data communication with terminal；Electric car of the present invention passes through processor
The control program of the electric car stored in 1001 calling memories 1005, and execute following operation (as shown in Figure 2):
Step S10, in acquisition and electric machine controller power device adjacent position Current Temperatures T1；
In this step, the power device can be MOSFET (metal oxide semiconductor field effect tube), described to work as
Preceding temperature T1It can be acquired as the temperature sensor on the circuit board where being located at the power device.
Step S20, according to the Current Temperatures T1And default mapping relations calculate Current Temperatures inside the power device
T2。
It in this step, can be in the or not prefabricated temperature sensing inside the power device by preset mapping relations
In the case where device, the Current Temperatures T inside the power device is relatively accurately obtained2, the preset mapping relations can be with
Obtained by experiment, when experiment, an experimental temperature sensor can be installed inside power device, and on circuit boards with reality
Acquire Current Temperatures T1Same position another experiment sensor is set, the operating power that laboratory adjusts power device changes function
Rate sensor internal temperature records the mapping relations between two experiment sensors temperature collected, i.e., default in step
Mapping relations.
The control method of electric car provided by the invention, by obtaining and power device adjacent position in electric machine controller
Current Temperatures T1；According to the Current Temperatures T1And default mapping relations calculate Current Temperatures T inside the power device2.Solution
The power control device of built-in temperature sensor of having determined is not easy to batch production or that there are thermometrics is accurate without built-in temperature sensor
Spend lower can not ensure in electric machine controller the problems such as the security monitoring of power device temperature.
Electric car of the present invention calls the control program of the electric car stored in memory 1005 by processor 1001,
Also execute following operation (as shown in Figure 3):
Step S30, according to the threshold value T of the power device internal temperature2maxAnd the default mapping relations, described in calculating
Power device adjacent position temperature threshold T1max；
In this step, the threshold value T of the power device internal temperature2maxIt can be by corresponding power device operation instructions
The maximum operation (service) temperature of middle record obtains.
Step S40, according to the temperature threshold T1maxExecute the Preservation tactics for being directed to the power device.
In this step, the Preservation tactics of the power device can be to reduce power device actual power or stopping function
The methods of rate device work.
The control method of electric car provided by the invention, by obtaining and power device adjacent position in electric machine controller
Current Temperatures T1；According to the Current Temperatures T1And default mapping relations calculate Current Temperatures T inside the power device2；Root
According to the threshold value T of the power device internal temperature2maxAnd the default mapping relations, calculate power device adjacent position temperature
Spend threshold value T1max；According to the temperature threshold T1maxExecute the Preservation tactics for being directed to the power device.It solves in the prior art
Electric machine controller temperature controller is not easy to produce in batches or can not ensured there are accuracy is lower there are technique production is more difficult
Temperature controls security problems.
Referring to Fig. 4, electric car of the present invention calls the electric car stored in memory 1005 by processor 1001
Program is controlled, following operation is also executed:
Step S401, by the Current Temperatures T1With the temperature threshold T1maxIt is compared；
In this step, by by T1With the temperature threshold T1maxIt is compared, it is right indeed through mapping relations
T2With the threshold value T of the power device internal temperature2maxIt compares, cleverly avoids needs and set inside power device
It is inconvenient caused by sensor to set, and using the mapping relations obtained are realized, can preferably ensure the T1With the temperature threshold
Value T1maxTo the T2With the temperature threshold T2maxRepresentative, comparison result is more reliable, ensure that and is executed by this result
For the opportunity accuracy of the Preservation tactics of the power device.
Step S402, in the Current Temperatures T1More than the temperature threshold T1maxWhen, control, which is sent, to electric machine controller refers to
It enables.Assigning protection control instruction to electric machine controller includes executing reducing Power operation or stopping the power device for task.
In this step, in the Current Temperatures T1More than the temperature threshold T1maxWhen, i.e., corresponding Current Temperatures T2It is super
Cross the temperature threshold T2maxWhen, the operation of the power device is reduced or stopped, enabling to the power device that can dissipate
It reduces in the process of heat or no longer obtains more heats, enable power control device effective temperature-reducing, avoid power control
Damage of the device processed because of long-time more than power control device caused by work high temperature limit.
Referring to Fig. 5, electric car of the present invention calls the electric car stored in memory 1005 by processor 1001
Control program, also execute following operation:
Step S403, Preservation tactics are obtained and executes state；
Specifically, in this step, the method for obtaining Preservation tactics execution can run shape by acquisition power device
State, such as power is run to judge.
Step S404, as the Current Temperatures T1Less than the temperature threshold T1max, and the Preservation tactics are in and are performed
When state, issues and terminate execution Preservation tactics instruction；
It is described to issue the setting for terminating and executing Preservation tactics instruction, so that the temperature in power control device drops to reasonable conjunction
When managing in range, normal full power use can be continued, ensure that can normal work when the temperature of power control device is not exceeded
Make.
Step S405, as the Current Temperatures T1When more than or equal to threshold value, issues and the Preservation tactics instruction is maintained to hold
The order of row state.
The setting of the order for maintaining the Preservation tactics instruction execution state, so that in the temperature of power control device
The temperature threshold T is not dropped to2maxWithin when, can continuously carry out Preservation tactics instruction, ensure that Preservation tactics instruction hold
Capable continued reliability.
The default mapping relations include preset mapping table, and the mapping table acquires multiple groups difference by preset experiment
Temperature T1And Current Temperatures T inside the corresponding power device2Manufactured mapping table.The mapping table can be for by experiment acquisition
Point-to-point irregular mapping table, can also be according to the mapping relations obtained in experimental data such as linear relationship, curved line relation
Deng mapping equation generate mapping table.
Referring to Fig. 6, electric car of the present invention calls the electric car stored in memory 1005 by processor 1001
Control program, also execute following operation:
Step S301, the threshold value T of the power device internal temperature is obtained2maxAnd the Current Temperatures T1With it is described current
Temperature T2Related coefficient K；
It in this step, can be in the or not prefabricated temperature sensing inside the power device by preset mapping relations
In the case where device, the Current Temperatures T inside the power device is relatively accurately obtained2, the preset mapping relations can be with
Obtained by experiment, when experiment, an experimental temperature sensor can be installed inside power device, and on circuit boards with reality
Acquire Current Temperatures T1Same position another experiment sensor is set, the operating power that laboratory adjusts power device changes function
Rate sensor internal temperature records two experiment sensors temperature collected, and two groups of temperature are fitted, phase relation is obtained
Number K.
In this step, the threshold value T of the power device internal temperature2maxIt can be by corresponding power device operation instructions
The maximum operation (service) temperature of middle record obtains.
Step S302, according to T2max=K*T1maxCalculate the threshold value T of the power device internal temperature1max。
In this step, the related coefficient obtained using preparatory experiment, as the power control device internal temperature and attached
The reliable mapping relations of nearly circuit board temperature accurate can know the temperature inside power control device, and calculate step letter
Single, computational efficiency is high, so that the execution of corresponding Preservation tactics instruction has the guarantee of timeliness.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the unit claims listing several devices, several in these devices can be by same hard
Part item embodies.The use of word first, second, and third does not indicate any sequence.These words can be explained
For title.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be vehicle control
Device processed etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Equivalent structure or equivalent flow shift made by specification and accompanying drawing content is applied directly or indirectly in other phases
The technical field of pass, is included within the scope of the present invention.
Claims (10)
1. a kind of Control of Electric Vehicles method, which is characterized in that the Control of Electric Vehicles method the following steps are included:
Obtain the Current Temperatures T with adjacent position outside power device in electric machine controller1；
According to the Current Temperatures T1And default mapping relations, calculate Current Temperatures T inside the power device2。
2. Control of Electric Vehicles method as described in claim 1, which is characterized in that the Control of Electric Vehicles method further includes
Following steps:
According to the threshold value T of the power device internal temperature2maxAnd the default mapping relations, it is adjacent to calculate the power device
Position temperature threshold T1max；
According to the temperature threshold T1maxExecute the Preservation tactics for being directed to the power device.
3. Control of Electric Vehicles method as claimed in claim 2, which is characterized in that according to the temperature threshold T1maxExecute needle
Include: to the step of Preservation tactics of the power device
By the Current Temperatures T1With the temperature threshold T1maxIt is compared；
In the Current Temperatures T1More than the temperature threshold T1maxWhen, protection control instruction is sent to electric machine controller.
4. Control of Electric Vehicles method as claimed in claim 3, which is characterized in that
Sending protection control instruction to electric machine controller includes assigning execution to electric machine controller to reduce Power operation or stopping institute
State the task of power device.
5. Control of Electric Vehicles method as claimed in claim 2, which is characterized in that described according to the temperature threshold T1maxIt holds
The hand-manipulating of needle further includes Preservation tactics monitoring step to the Preservation tactics of the power device, and the Preservation tactics monitoring step includes:
It obtains Preservation tactics and executes state；
As the Current Temperatures T1Less than the temperature threshold T1max, and the Preservation tactics are in when being performed state, are issued eventually
Preservation tactics instruction is only executed,
As the Current Temperatures T1When more than or equal to threshold value, the instruction for maintaining the Preservation tactics instruction execution state is issued.
6. Control of Electric Vehicles method as described in claim 1, which is characterized in that the default mapping relations are by testing
Under the conditions of acquire multiple groups T1And corresponding T2It is obtained.
7. Control of Electric Vehicles method as claimed in claim 6, which is characterized in that described according to temperature inside the power device
The threshold value T of degree2maxAnd the default mapping relations, obtain the power device adjacent position temperature threshold T1maxThe step of include:
Obtain the threshold value T of the power device internal temperature2maxAnd the Current Temperatures T1With the Current Temperatures T2Correlation
COEFFICIENT K；
According to T2max=K*T1maxCalculate the threshold value T of the power device internal temperature1max。
8. Control of Electric Vehicles method as claimed in claim 7, which is characterized in that the related coefficient K is by T in default experiment1
And T2Linear fit obtains.
9. a kind of electric car characterized by comprising processor, memory and be stored on the memory and can be in institute
The computer program run on processor is stated, such as claim 1 to 8 is realized when the computer program is executed by the processor
Any one of described in Control of Electric Vehicles method the step of.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program realizes such as Control of Electric Vehicles described in any item of the claim 1 to 8 when the computer program is executed by processor
The step of method.
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| CN201811143936.4A CN109302120A (en) | 2018-09-28 | 2018-09-28 | A kind of Control of Electric Vehicles method, electric car and computer readable storage medium |
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| CN201811143936.4A CN109302120A (en) | 2018-09-28 | 2018-09-28 | A kind of Control of Electric Vehicles method, electric car and computer readable storage medium |
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Application publication date: 20190201 |