CN109649192B - Model selection method and device for pre-charging device of electric vehicle - Google Patents
Model selection method and device for pre-charging device of electric vehicle Download PDFInfo
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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Abstract
The invention provides a model selection method and equipment of a pre-charging device of an electric automobile, wherein the pre-charging device comprises a pre-charging resistor, and the model selection method comprises the step of selecting the model of the pre-charging resistor; the type selection step of the pre-charging resistor comprises the following steps: providing a model selection parameter input interface and a model selection result output interface; the type selection parameter input interface acquires pre-charging input parameters, wherein the pre-charging input parameters comprise a finished automobile capacitance value, target pre-charging time, finished automobile total voltage and a pre-charging completion flag value, and the pre-charging completion flag value is the ratio of the target pre-charging voltage to the finished automobile total voltage; calculating a target resistance value of the pre-charging resistor according to the pre-charging input parameters; the model selection result output interface outputs a target resistance value to select the pre-charging resistor. According to the invention, the target parameters of the electric vehicle pre-charging device can be obtained by simply typing the parameters, so that a user can quickly and accurately complete the model selection of the electric vehicle pre-charging device, and the pre-charging efficiency and the user experience are improved.
Description
Technical Field
The invention relates to the technical field of pre-charging, in particular to a model selection method and device of a pre-charging device of an electric automobile.
Background
As electric vehicles become more popular, the need for pre-charging electric vehicles is also increasing. In the process of pre-charging, selecting a proper pre-charging device of the electric automobile is an especially important link.
However, in the prior art, a method and a device capable of selecting a type of a pre-charging device of an electric vehicle are lacked, so that a user cannot quickly and accurately match pre-charging related parameters, thereby influencing user experience and reducing pre-charging efficiency.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
The invention aims to overcome the defect that a user cannot quickly and accurately match related precharge parameters due to the lack of a method and equipment for selecting the type of an electric automobile precharge device in the prior art, and provides a method and equipment for selecting the type of the electric automobile precharge device.
The technical problem is solved by the following technical scheme:
the model selection method of the pre-charging device of the electric automobile comprises the steps of selecting the model of the pre-charging resistor;
the type selection step of the pre-charging resistor comprises the following steps:
providing a model selection parameter input interface and a model selection result output interface;
the type selection parameter input interface acquires pre-charging input parameters, wherein the pre-charging input parameters comprise a finished automobile capacitance value, target pre-charging time, finished automobile total voltage and a pre-charging completion flag value, and the pre-charging completion flag value is the ratio of the target pre-charging voltage to the finished automobile total voltage;
calculating a target resistance value of a pre-charging resistor according to the pre-charging input parameters;
and the model selection result output interface outputs the target resistance value to be used for selecting the pre-charging resistor.
Optionally, in the step of calculating the target resistance value of the pre-charge resistor according to the pre-charge input parameter, the target resistance value is calculated according to a calculation formula and the pre-charge input parameter;
the calculation formula includes the following formula:
wherein R is the target resistance value, C is the finished vehicle capacitance value, t is the target pre-charging time, ucFor the target precharge voltage, UsIs the total voltage of the whole vehicle.
Optionally, in the step of obtaining the precharge input parameter by the type selection parameter input interface, the precharge input parameter further includes a target precharge time range;
in the step of calculating the target resistance value of the pre-charging resistor according to the pre-charging input parameter, the target resistance value is calculated according to the calculation formula, the vehicle capacitance value, the target pre-charging time, the vehicle total voltage and the pre-charging completion flag value, or the target resistance value range is calculated according to the calculation formula, the vehicle capacitance value, the target pre-charging time range, the vehicle total voltage and the pre-charging completion flag value.
Optionally, the pre-charging device further comprises a contactor, and the type selection method further comprises a type selection step of the contactor;
the type selection step of the contactor comprises the following steps:
the model selection parameter input interface acquires the total voltage of the whole vehicle and also acquires the target resistance value or the target resistance value range;
calculating the lowest rated voltage of the contactor according to the total voltage of the whole vehicle, calculating the rated current of the contactor according to the total voltage of the whole vehicle and the target resistance value, or calculating the rated current range of the contactor according to the total voltage of the whole vehicle and the target resistance value range;
the model selection result output interface outputs the lowest rated voltage and the rated current, or the model selection result output interface outputs the lowest rated voltage and the rated current range to be used for selecting a contactor.
Optionally, in the step of calculating the lowest rated voltage of the contactor according to the total voltage of the entire vehicle, the lowest rated voltage is equal to the total voltage of the entire vehicle multiplied by n, and n is greater than or equal to 1.
Optionally, providing the type selection parameter input interface and the type selection result output interface through a program development environment;
the program development environment includes LabVIEW (a program development environment).
The model selection equipment of the pre-charging device of the electric automobile comprises a pre-charging resistor, and comprises a model selection parameter input interface, a calculation processing module and a model selection result output interface;
the type selection parameter input interface is configured to acquire pre-charging input parameters, wherein the pre-charging input parameters comprise a finished automobile capacitance value, a target pre-charging time, a finished automobile total voltage and a pre-charging completion flag value, and the pre-charging completion flag value is a ratio of the target pre-charging voltage to the finished automobile total voltage;
the calculation processing module is configured to calculate a target resistance value of a pre-charging resistor according to the pre-charging input parameter;
the type selection result output interface is configured to output the target resistance value for selecting a pre-charge resistor.
Optionally, the calculation processing module is configured to calculate the target resistance value according to a calculation formula and the precharge input parameter;
the calculation formula includes the following formula:
wherein R is the target resistance value, C is the finished vehicle capacitance value, t is the target pre-charging time, ucFor the target precharge voltage, UsIs the total voltage of the whole vehicle.
Optionally, the precharge input parameter further comprises a target precharge time range;
the computing processing module is configured to: and calculating the target resistance value according to the calculation formula, the finished automobile capacitance value, the target pre-charging time, the finished automobile total voltage and the pre-charging completion flag value, or calculating the target resistance value range according to the calculation formula, the finished automobile capacitance value, the target pre-charging time range, the finished automobile total voltage and the pre-charging completion flag value.
Optionally, the pre-charging device further comprises a contactor;
the type selection parameter input interface is further configured to obtain the target resistance value or the target resistance value range;
the calculation processing module is further configured to calculate the lowest rated voltage of the contactor according to the total voltage of the whole vehicle;
the calculation processing module is further configured to calculate the rated current of the contactor according to the total voltage of the whole vehicle and the target resistance value, or the calculation processing module is further configured to calculate the rated current range of the contactor according to the total voltage of the whole vehicle and the target resistance value range;
the model selection result output interface is further configured to output the lowest rated voltage and the rated current, or the model selection result output interface is further configured to output the lowest rated voltage and the rated current range for selecting a contactor.
Optionally, the lowest rated voltage is equal to the total voltage of the whole vehicle multiplied by n, and n is greater than or equal to 1.
Optionally, providing the type selection parameter input interface and the type selection result output interface through a program development environment;
the program development environment comprises LabVIEW.
On the basis of the common knowledge in the field, the preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
the model selection method and the device of the electric vehicle pre-charging device can obtain the target parameters of the electric vehicle pre-charging device through simply typing in the parameters, so that a user can quickly and accurately complete model selection on the electric vehicle pre-charging device, the pre-charging efficiency is improved, and the user experience is further improved.
Drawings
The features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
Fig. 1 is a flowchart illustrating a type selection procedure of a pre-charging resistor in a type selection method of a pre-charging device for an electric vehicle according to a preferred embodiment of the invention.
Fig. 2 is a flowchart illustrating a contactor type selection procedure of a method for selecting a type of an electric vehicle precharge device according to a preferred embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a type selection device of an electric vehicle pre-charging apparatus according to a preferred embodiment of the invention.
Description of reference numerals:
Type selection parameter input interface 2
Type selection result output interface 4
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be construed as imposing any limitation on the scope of the present invention.
The following description is presented to enable any person skilled in the art to make and use the invention and is incorporated in the context of a particular application. Various modifications, as well as various uses in different applications will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to a wide range of embodiments. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In the following detailed description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the practice of the invention may not necessarily be limited to these specific details. In other instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the present invention.
Note that where used, the designations left, right, front, back, top, bottom, positive, negative, clockwise, and counterclockwise are used for convenience only and do not imply any particular fixed orientation. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object.
The embodiment provides a model selection method of a pre-charging device of an electric automobile, wherein the pre-charging device comprises a pre-charging resistor and a contactor, and the model selection method comprises a model selection step of the pre-charging resistor and a model selection step of the contactor.
In this embodiment, the electric vehicle that needs to be precharged is a pure electric vehicle, but is not limited to a pure electric vehicle, and may be another type of electric vehicle, and may be selected accordingly according to actual conditions.
Specifically, as shown in fig. 1, the type selecting step of the pre-charging resistor includes the following steps:
In this step, the model selection parameter input interface and the model selection result output interface are provided through a program development environment of the upper computer.
In this embodiment, the program development environment is LabVIEW, but the program development environment is not particularly limited, and may be selected accordingly according to actual situations.
In the embodiment, the operation interface of the LabVIEW is written by software, so that the operation of users such as research personnel or maintenance personnel is more visual and humanized.
After step 101 is performed, step 102 is performed.
And 102, acquiring a pre-charging input parameter by the type selection parameter input interface.
In this step, a user inputs a pre-charging input parameter through an operation interface of the LabVIEW, and the type-selecting parameter input interface acquires the pre-charging input parameter.
In this embodiment, the precharge input parameters include a vehicle capacitance value (a capacitance value of an X capacitor between positive and negative voltages of a battery pack), a target precharge time, a vehicle total voltage (a total voltage that can be reached by a vehicle electrical platform), and a precharge completion flag value.
In this embodiment, the pre-charge completion flag value is a ratio of a target pre-charge voltage to the total voltage of the entire vehicle, for example, the target pre-charge voltage reaches 95% of the total voltage of the entire vehicle.
In this step, preferably, the precharge input parameter further includes a target precharge time range, that is, the type-selection parameter input interface obtains a target minimum precharge time and a target maximum precharge time.
After step 102 is performed, step 103 is performed.
In this step, the target resistance value is calculated based on a calculation formula of an RC circuit and the precharge input parameter.
The calculation formula includes the following formula:
wherein R is the target resistance value, C is the finished vehicle capacitance value, t is the target pre-charging time, ucFor the target precharge voltage, UsIs the total voltage of the whole vehicle.
In this step, it is preferable that the minimum value of the target precharge time and the maximum value of the target precharge time are respectively input into the above calculation formula, and the minimum value and the maximum value of the target resistance value are respectively calculated to determine the target resistance value range.
After step 103 is performed, step 104 is performed.
And 104, outputting the target resistance value by the model selection result output interface.
In this step, the model selection result output interface outputs the target resistance value, and preferably, the model selection result output interface outputs the target resistance value range, and the target resistance value or the target resistance value range is displayed in an operation interface of the LabVIEW.
After step 104 is performed, step 105 is performed.
In this step, a user, such as a developer or a maintenance worker, may conveniently select the pre-charge resistor of the corresponding parameter according to the target resistance value or the target resistance value range displayed in the operation interface.
Specifically, as shown in fig. 2, when the contactor type selection step is performed, the target resistance value or the target resistance value range output in the contactor type selection step for the pre-charge resistor is required, so that the contactor type selection step can be performed or selected after the step 104.
The type selection step of the contactor comprises the following steps:
In this step, the type selection parameter input interface obtains the total voltage of the entire vehicle and the target resistance value, and preferably, the type selection parameter input interface also obtains the range of the target resistance value.
After step 201 is performed, step 202 is performed.
In this step, the lowest rated voltage should be greater than or equal to the total voltage of the entire vehicle, so that the lowest rated voltage is equal to the total voltage of the entire vehicle multiplied by n, and n is greater than or equal to 1.
In this embodiment, n is preferably 1.1 to 1.3, but the value of n is not particularly limited, and may be selected accordingly according to actual situations.
In this step, the rated current of the contactor (the rated current of the high-voltage circuit where the contactor is located) is calculated according to the total voltage of the entire vehicle and the target resistance value, and preferably, the rated current range of the contactor is calculated according to the total voltage of the entire vehicle and the target resistance value range.
After step 202 is performed, step 203 is performed.
And step 203, outputting the lowest rated voltage and rated current by the model selection result output interface.
In this step, the model selection result output interface outputs the lowest rated voltage and the rated current, and the lowest rated voltage and the rated current are displayed in an operation interface of the LabVIEW.
Preferably, the type selection result output interface outputs the lowest rated voltage and the rated current range, and the lowest rated voltage and the rated current range are displayed in the operation interface.
After step 203 is performed, step 204 is performed.
And step 204, selecting a contactor.
In this step, a user such as a developer or a maintenance person may conveniently select a contactor of a corresponding parameter according to the lowest rated voltage and the rated current or the rated current range displayed in the operation interface.
The model selection method of the electric vehicle pre-charging device provided by the embodiment can obtain the target parameter of the electric vehicle pre-charging device through simply typing in the parameter, so that a user can quickly and accurately complete model selection on the electric vehicle pre-charging device, the pre-charging efficiency is improved, and the user experience is further improved.
As shown in fig. 3, the present embodiment further provides a model selection device 1 of an electric vehicle pre-charging device, the pre-charging device includes a pre-charging resistor and a contactor, and the model selection device 1 of the electric vehicle pre-charging device utilizes the model selection method of the electric vehicle pre-charging device as described above.
Specifically, the model selection device 1 of the electric vehicle pre-charging device comprises a model selection parameter input interface 2, a calculation processing module 3 and a model selection result output interface 4, wherein the calculation processing module 3 is in communication connection with the parameter input interface 2 and the model selection result output interface 4 respectively.
And a model selection parameter input interface 2 and a model selection result output interface 4 are provided through a program development environment of the upper computer.
In this embodiment, the program development environment is LabVIEW, but the program development environment is not particularly limited, and may be selected accordingly according to actual situations.
In the embodiment, the operation interface of the LabVIEW is written by software, so that the operation of users such as research personnel or maintenance personnel is more visual and humanized.
The type selection parameter input interface 2 is configured to obtain a precharge input parameter.
In this embodiment, the precharge input parameters include a vehicle capacitance value, a target precharge time, a vehicle total voltage, and a precharge completion flag value.
Preferably, the pre-charge input parameters further include a target pre-charge time range, that is, the type-selection parameter input interface obtains a target minimum pre-charge time and a target maximum pre-charge time.
The calculation processing module 3 is configured to calculate a target resistance value of the pre-charge resistor according to a calculation formula of an RC circuit and the pre-charge input parameter.
The calculation formula includes the following formula:
wherein R is the target resistance value, C is the finished vehicle capacitance value, t is the target pre-charging time, ucFor the target precharge voltage, UsIs the total voltage of the whole vehicle.
Preferably, the target minimum value of the pre-charge time and the target maximum value of the pre-charge time are respectively input into the above calculation formula, and the minimum value and the maximum value of the target resistance value are respectively calculated to determine the target resistance value range.
The type selection result output interface 4 is configured to output the target resistance value, and preferably, the type selection result output interface 4 is further configured to output the target resistance value range, and the target resistance value or the target resistance value range is displayed in the operational interface of LabVIEW.
And a user such as a research and development personnel or a maintenance personnel can conveniently select the pre-charging resistor with corresponding parameters according to the target resistance value or the target resistance value range displayed in the operation interface.
The type selection parameter input interface 2 is further configured to obtain the total voltage of the entire vehicle and the target resistance value, and preferably, the type selection parameter input interface is further configured to obtain the range of the target resistance value.
And the calculation processing module 3 is also configured to calculate the lowest rated voltage of the contactor according to the total voltage of the whole vehicle.
In this embodiment, the lowest rated voltage should be greater than or equal to the total voltage of the entire vehicle, so that the lowest rated voltage is equal to the total voltage of the entire vehicle multiplied by n, where n is greater than or equal to 1.
Preferably, n is 1.1-1.3, but the value of n is not particularly limited, and can be selected accordingly according to actual conditions.
And the calculation processing module 3 is also configured to calculate the rated current of the contactor according to the total voltage of the whole vehicle and the target resistance value.
Preferably, the calculation processing module 3 is further configured to calculate a rated current range of the contactor according to the total voltage of the entire vehicle and the target resistance value range.
The model selection result output interface 4 is further configured to output the lowest rated voltage and the rated current, which are displayed in an operation interface of LabVIEW.
Preferably, the type selection result output interface 4 is further configured to output the lowest rated voltage and the rated current range, and the lowest rated voltage and the rated current range are displayed in the operation interface.
In this embodiment, a user, such as a developer or a maintenance person, may conveniently select a contactor with corresponding parameters according to the lowest rated voltage and the rated current or the rated current range displayed in the operation interface.
The model selection equipment of electric automobile pre-charging device that this embodiment provided can obtain electric automobile pre-charging device's target parameter through simple parameter of typing to make the user accomplish the model selection to electric automobile pre-charging device fast and accurately, thereby promoted pre-charge efficiency, and then promoted user experience degree.
While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by one skilled in the art.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The model selection method of the pre-charging device of the electric automobile is characterized in that the pre-charging device comprises a pre-charging resistor, and the model selection method comprises the step of selecting the model of the pre-charging resistor;
the type selection step of the pre-charging resistor comprises the following steps:
providing a model selection parameter input interface and a model selection result output interface;
the type selection parameter input interface acquires pre-charging input parameters, wherein the pre-charging input parameters comprise a finished automobile capacitance value, target pre-charging time, finished automobile total voltage and a pre-charging completion flag value, and the pre-charging completion flag value is the ratio of the target pre-charging voltage to the finished automobile total voltage;
calculating a target resistance value of a pre-charging resistor according to a calculation formula and the pre-charging input parameter, wherein
R is the target resistance value, C is the finished vehicle capacitance value, t is the target pre-charging time, ucFor the target precharge voltage, UsThe total voltage of the whole vehicle is obtained;
and the model selection result output interface outputs the target resistance value to be used for selecting the pre-charging resistor.
2. The type selection method of claim 1, wherein in the step of obtaining a precharge input parameter at the type selection parameter input interface, the precharge input parameter further comprises a target precharge time range;
in the step of calculating the target resistance value of the pre-charging resistor according to the pre-charging input parameter, the target resistance value is calculated according to the calculation formula, the vehicle capacitance value, the target pre-charging time, the vehicle total voltage and the pre-charging completion flag value, or the target resistance value range is calculated according to the calculation formula, the vehicle capacitance value, the target pre-charging time range, the vehicle total voltage and the pre-charging completion flag value.
3. The type selection method according to claim 2, wherein the pre-charging device further comprises a contactor, and the type selection method further comprises the step of selecting the type of the contactor;
the type selection step of the contactor comprises the following steps:
the model selection parameter input interface acquires the total voltage of the whole vehicle and also acquires the target resistance value or the target resistance value range;
calculating the lowest rated voltage of the contactor according to the total voltage of the whole vehicle, calculating the rated current of the contactor according to the total voltage of the whole vehicle and the target resistance value, or calculating the rated current range of the contactor according to the total voltage of the whole vehicle and the target resistance value range;
the model selection result output interface outputs the lowest rated voltage and the rated current, or the model selection result output interface outputs the lowest rated voltage and the rated current range to be used for selecting a contactor.
4. The model selection method according to claim 3, characterized in that in the step of calculating the lowest rated voltage of the contactor according to the total voltage of the entire vehicle, the lowest rated voltage is equal to the total voltage of the entire vehicle multiplied by n, n being greater than or equal to 1.
5. The type selection method according to any one of claims 1 to 4, wherein the type selection parameter input interface and the type selection result output interface are provided through a program development environment;
the program development environment comprises LabVIEW.
6. The model selection equipment of the electric automobile pre-charging device is characterized in that the pre-charging device comprises a pre-charging resistor, and the model selection equipment comprises a model selection parameter input interface, a calculation processing module and a model selection result output interface;
the type selection parameter input interface is configured to acquire pre-charging input parameters, wherein the pre-charging input parameters comprise a finished automobile capacitance value, a target pre-charging time, a finished automobile total voltage and a pre-charging completion flag value, and the pre-charging completion flag value is a ratio of the target pre-charging voltage to the finished automobile total voltage;
the calculation processing module is configured to calculate a target resistance value of a pre-charging resistor according to a calculation formula and the pre-charging input parameter, wherein the target resistance value is obtained by calculating the target resistance value of the pre-charging resistor according to the calculation formula and the pre-charging input parameter
R is the target resistance value, C is the finished vehicle capacitance value, t is the target pre-charging time, ucFor the target precharge voltage, UsThe total voltage of the whole vehicle is obtained;
the type selection result output interface is configured to output the target resistance value for selecting a pre-charge resistor.
7. The type selection device of claim 6, wherein the precharge input parameter further comprises a target precharge time range;
the computing processing module is configured to: and calculating the target resistance value according to the calculation formula, the finished automobile capacitance value, the target pre-charging time, the finished automobile total voltage and the pre-charging completion flag value, or calculating the target resistance value range according to the calculation formula, the finished automobile capacitance value, the target pre-charging time range, the finished automobile total voltage and the pre-charging completion flag value.
8. The type selection device of claim 7, wherein the pre-charge apparatus further comprises a contactor;
the type selection parameter input interface is further configured to obtain the target resistance value or the target resistance value range;
the calculation processing module is further configured to calculate the lowest rated voltage of the contactor according to the total voltage of the whole vehicle;
the calculation processing module is further configured to calculate the rated current of the contactor according to the total voltage of the whole vehicle and the target resistance value, or the calculation processing module is further configured to calculate the rated current range of the contactor according to the total voltage of the whole vehicle and the target resistance value range;
the model selection result output interface is further configured to output the lowest rated voltage and the rated current, or the model selection result output interface is further configured to output the lowest rated voltage and the rated current range for selecting a contactor.
9. The type selection device of claim 8, wherein the lowest rated voltage is equal to the total vehicle voltage multiplied by n, n being greater than or equal to 1.
10. The type selection device according to any one of claims 6 to 9, wherein the type selection parameter input interface and the type selection result output interface are provided through a program development environment;
the program development environment comprises LabVIEW.
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| US9573474B2 (en) * | 2014-03-06 | 2017-02-21 | Ford Global Technologies, Llc | Capacitor precharging and capacitance/resistance measurement in electric vehicle drive system |
| CN104483614B (en) * | 2014-12-22 | 2017-08-25 | 重庆长安汽车股份有限公司 | A kind of pre-charge resistance durability test method and system |
| CN104915484A (en) * | 2015-05-28 | 2015-09-16 | 科力远混合动力技术有限公司 | Method for determining pre-charging resistance in high-voltage system for ni-mh hybrid electric vehicle |
| CN106364319B (en) * | 2016-09-19 | 2018-11-06 | 陕西法士特齿轮有限责任公司 | A kind of pure electric automobile preliminary filling circuit and method |
| US10476262B2 (en) * | 2017-03-24 | 2019-11-12 | Ford Global Technologies, Llc | Dual-bus battery precharge circuit |
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