Summary of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency, the High voltage accessory energy management of a kind of pure electric automobile especially set out, and the energy of the method conservative control high pressure adnexa uses.
For reaching above-mentioned purpose, embodiments of the invention propose the High voltage accessory energy management of a kind of pure electric automobile, comprise the steps: to receive the adnexa sent from the high pressure adnexa of pure electric automobile to open and ask, and obtain the current whole vehicle information of described pure electric automobile and the high-tension battery state-of-charge of described pure electric automobile；Current whole vehicle information according to described pure electric automobile judges the duty of described pure electric automobile, when judging that described pure electric automobile is in normal operating conditions, it is judged that whether the high-tension battery state-of-charge of described pure electric automobile meets the work requirements power of described high pressure adnexa；When the high-tension battery state-of-charge judging described pure electric automobile meets the work requirements power of described high pressure adnexa, calculate the operation demand power of described pure electric automobile, and the battery available discharge power of described operation demand power Yu described pure electric automobile is compared；And when described operation demand power is less than the battery available discharge power of described pure electric automobile, agree to that described adnexa opens request to open described high pressure adnexa.
The High voltage accessory energy management of pure electric automobile according to embodiments of the present invention, in vehicle operation, it is possible to the energy of conservative control high pressure adnexa uses.And when battery utilisable energy is limited, under not affecting safe premise, preferentially meet operator demand's power, thus ensureing normal vehicle operation.
In one embodiment of the invention, as one or more in meeting the following conditions, refuse described adnexa and open request or close the high pressure adnexa having turned on: judge that described pure electric automobile is not on described normal operating conditions；Described high-tension battery charged shape body does not meet the work requirements power of described high pressure adnexa；Or described operation demand power is equal to or more than the battery available discharge power of described pure electric automobile.
In one embodiment of the invention, by gathering high-tension battery state-of-charge described in the battery charge state signal acquisition of described pure electric automobile.
In one embodiment of the invention, the operation demand power of the described pure electric automobile of described calculating, comprise the steps: to receive the accelerator pedal signal of the gas pedal from described pure electric automobile；The operation demand power of electric automobile is gone out according to the calculating of described accelerator pedal signal.
In one embodiment of the invention, the difference power of the battery available discharge power calculating described pure electric automobile and the maximum demanded power of described high pressure adnexa is also comprised the steps:；The operation demand power of described pure electric automobile is compared to control described high pressure adnexa with the battery available discharge power of described pure electric automobile with the difference power of the maximum demanded power of described high pressure adnexa and enters corresponding mode of operation.
In one embodiment of the invention, when the operation demand merit of described pure electric automobile is less than or equal to described difference power, then described high pressure adnexa enters normal mode of operation；When the operation demand power of described pure electric automobile is more than described difference power, then described high pressure adnexa is partly into normal mode of operation.
Aspect and advantage that the present invention adds will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining the present invention, and is not construed as limiting the claims.
With reference to as explained below and accompanying drawing, it will be clear that these and other aspects of embodiments of the invention.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, all changes within the scope of embodiments of the invention include falling into attached claims spirit and intension, amendment and equivalent.
The High voltage accessory energy management of pure electric automobile according to embodiments of the present invention is described below with reference to Fig. 1.
As it is shown in figure 1, the High voltage accessory energy management of the pure electric automobile of embodiment of the present invention offer, comprise the steps:
Step S101, receives the adnexa sent from the high pressure adnexa of pure electric automobile and opens and ask, and obtain the current whole vehicle information of pure electric automobile and the high-tension battery state-of-charge of pure electric automobile.
The high pressure adnexa of pure electric automobile can be electricity air-conditioning, electric heater etc., and the operation of above-mentioned high pressure adnexa will consume substantial amounts of electric energy.Before above-mentioned high pressure adnexa is opened, it is necessary to send adnexa to VMS (vehiclemanagementsystem, entire car controller) and open request, VMS assess whether to open high pressure adnexa.
Entire car controller VMS receives the adnexa unlatching request that high pressure adnexa sends, and gathers current whole vehicle information and the high-tension battery SOC (StateofCharge, state-of-charge) of pure electric automobile.
Step S102, judges the duty of pure electric automobile according to the whole vehicle information of pure electric automobile, when judging that pure electric automobile is in normal operating conditions, it is judged that whether the high-tension battery state-of-charge of pure electric automobile meets the work requirements power of high pressure adnexa.
Entire car controller judges the current operating conditions of pure electric automobile according to the current whole vehicle information of the pure electric automobile collected in step S101.When judging that pure electric automobile is in normal condition, determine whether whether the high-tension battery state-of-charge of pure electric automobile meets the work requirements power of high pressure adnexa.If it is determined that pure electric automobile is not on normal condition, then refusal adnexa is opened request or closes the adnexa having been switched on.
In an embodiment of the present invention, by entire car controller from the battery charge state signal gathering pure electric automobile bus to obtain high-tension battery state-of-charge.Then, it is judged that whether the high-tension battery state-of-charge of pure electric automobile meets the work requirements power of high pressure adnexa.
Step S103, when the high-tension battery state-of-charge judging pure electric automobile meets the work requirements power of high pressure adnexa, calculates the operation demand power of pure electric automobile, and is compared by the battery available discharge power of operation demand power Yu described pure electric automobile.
When the high-tension battery state-of-charge judging pure electric automobile meets the work requirements power of high pressure adnexa, determine whether that whether the demand power of driver is less than battery available discharge power.If it is determined that the high-tension battery state-of-charge of pure electric automobile does not meet the work requirements power of high pressure adnexa, then refusal adnexa is opened request or closes the adnexa having been switched on.
In an embodiment of the present invention, entire car controller receive the accelerator pedal signal of the gas pedal from pure electric automobile, then calculate the operation demand power of driver according to this accelerator pedal signal.
Step S104, when operation demand power is less than the battery available discharge power of pure electric automobile, agrees to that adnexa opens request to open high pressure adnexa.
When judging the operation demand power of driver less than the battery available discharge power of pure electric automobile, illustrate that the energy of battery enough supports the operation of high pressure adnexa.Entire car controller agrees to above-mentioned unlatching request, and opens high pressure adnexa.
In one embodiment of the invention, also comprise the steps: to judge that pure electric automobile is available for the power that high pressure adnexa uses.Specifically, first the difference power of the battery available discharge power of pure electric automobile and the maximum demanded power of high pressure adnexa is calculated, then the operation demand power of this pure electric automobile is compared with the difference power of the maximum demanded power of high pressure adnexa with the battery available discharge power of pure electric automobile, control high pressure adnexa according to comparative result and enter corresponding mode of operation.
When the operation demand merit of pure electric automobile is less than or equal to difference power, then high pressure adnexa enters normal mode of operation.When the operation demand power of pure electric automobile is more than difference power, then high pressure accessory power is limited, only allows partial high pressure adnexa to run.Now need the priority according to adnexa to judge, first ensure the normal operation with vehicle security related accessories, then consider further that the adnexa that car load comfortableness is relevant.
Below with reference to Fig. 2, the High voltage accessory energy management of the pure electric automobile of the embodiment of the present invention is described in detail.
Step S201, it is judged that whether pure electric automobile is in normal operating conditions.If it is, perform step S203, otherwise perform step S202.
Entire car controller VMS receives the adnexa unlatching request that high pressure adnexa sends, and gathers current whole vehicle information and the high-tension battery SOC of pure electric automobile.The current whole vehicle information of the pure electric automobile collected judges the current operating conditions of pure electric automobile.When judging that pure electric automobile is in normal condition, perform step S203, otherwise perform step S202.
Step S202, it is invalid that request opened by adnexa.
Entire car controller refusal adnexa is opened request or closes the adnexa having been switched on.
Step S203, it may be judged whether request opened by the adnexa for high pressure adnexa, if it is performs step S204, otherwise performs step S202.
Step S204, it is judged that whether high-tension battery state-of-charge meets the work requirements power of high pressure adnexa, if it is, perform step S205, otherwise performs step S202.
By entire car controller from the battery charge state signal gathering pure electric automobile bus to obtain high-tension battery state-of-charge.Then, it is judged that whether the high-tension battery state-of-charge of pure electric automobile meets the work requirements power of high pressure adnexa.When the high-tension battery state-of-charge judging pure electric automobile meets the work requirements power of high pressure adnexa, performing step S205, otherwise perform step S202, refusal adnexa is opened request or closes the adnexa having been switched on.
Step S205, it is judged that whether the demand power of driver is less than battery available discharge power, if it is, perform step S206, otherwise performs step S202.
When judging the operation demand power of driver less than the battery available discharge power of pure electric automobile, illustrate that the energy of battery enough supports the operation of high pressure adnexa.Entire car controller agrees to above-mentioned unlatching request, and opens high pressure adnexa, otherwise performs step S202, and refusal adnexa is opened request or closes the adnexa having been switched on.
Step S206, it is judged that whether operator demand's power consume the difference of peak power less than battery available discharge power and adnexa, if it is, perform step S207, otherwise performs step S208.
After judging that whether the demand power of driver is less than battery available discharge power, determine whether that pure electric automobile is available for the power that high pressure adnexa uses.
Step S207, high pressure adnexa enters normal mode of operation.
When the operation demand merit of pure electric automobile is less than or equal to difference power, then high pressure adnexa enters normal mode of operation.
Step S208, accessory power is limited.
When the operation demand power of pure electric automobile is more than difference power, then high pressure accessory power is limited, only allows partial high pressure adnexa to run.Now need the priority according to adnexa to judge, first ensure the normal operation with vehicle security related accessories, then consider further that the adnexa that car load comfortableness is relevant.
The High voltage accessory energy management of pure electric automobile according to embodiments of the present invention, in vehicle operation, it is possible to the energy of conservative control high pressure adnexa uses.And when battery utilisable energy is limited, under not affecting safe premise, preferentially meet operator demand's power, thus ensureing normal vehicle operation.
Describe in flow chart or in this any process described otherwise above or method and be construed as, represent and include the module of code of executable instruction of one or more step for realizing specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press order that is shown or that discuss, including according to involved function by basic mode simultaneously or in the opposite order, performing function, this should be understood by embodiments of the invention person of ordinary skill in the field.
Represent in flow charts or in this logic described otherwise above and/or step, such as, it is considered the sequencing list of executable instruction for realizing logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (such as computer based system, including the system of processor or other can from instruction execution system, device or equipment instruction fetch the system performing instruction), or use in conjunction with these instruction execution systems, device or equipment.For the purpose of this specification, " computer-readable medium " can be any can comprise, store, communicate, propagate or transmission procedure is for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium includes following: have the electrical connection section (electronic installation) of one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read only memory (ROM), erasable edit read only memory (EPROM or flash memory), fiber device, and portable optic disk read only memory (CDROM).Additionally, computer-readable medium can even is that the paper that can print described program thereon or other suitable media, because can such as by paper or other media be carried out optical scanning, then carry out editing, interpreting or be processed to electronically obtain described program with other suitable methods if desired, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple steps or method can realize with the storage software or firmware in memory and by suitable instruction execution system execution.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic of logic gates for data signal realizes logic function, there is the special IC of suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries can be by the hardware that program carrys out instruction relevant and complete, described program can be stored in a kind of computer-readable recording medium, this program upon execution, including the step one or a combination set of of embodiment of the method.
Additionally, each functional unit in each embodiment of the present invention can be integrated in a processing module, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a module.Above-mentioned integrated module both can adopt the form of hardware to realize, it would however also be possible to employ the form of software function module realizes.If described integrated module is using the form realization of software function module and as independent production marketing or use, it is also possible to be stored in a computer read/write memory medium.
Storage medium mentioned above can be read only memory, disk or CD etc..
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, being appreciated that and these embodiments can be carried out multiple change, amendment, replacement and modification without departing from the principles and spirit of the present invention, the scope of the invention and equivalency.