阅读说明：本技术 用于电动汽车移动智能补电系统的补电方法 (Power supplementing method for mobile intelligent power supplementing system of electric automobile ) 是由 郭黎青 田志龙 张心 张克贺 于 2021-09-01 设计创作，主要内容包括：本发明提供了用于电动汽车移动智能补电系统的补电方法,属于电动汽车移动智能补电系统技术领域,该补电系统包括双向充放电模块、控制单元、人机交互单元、计量单元、充放电连接装置、直流充电座和电池包,所述双向充放电模块通过交流接触器KMA1与市电三相输电线电连接,所述双向充放电模块与所述控制单元电连接,所述人机交互单元和所述计量单元均与所述控制单元电连接,本发明可使电动汽车用户无需到固定充电桩地点进行充放电,只需有国标插头的场所即可开始充放电,大大提高了充电设备使用的便捷性,给用户带来了更好的充放电体验,使电动汽车多余电量可回馈国家电网,利用峰谷电价可增加用户的收益。(The invention provides a power supplementing method for an electric automobile mobile intelligent power supplementing system, which belongs to the technical field of the electric automobile mobile intelligent power supplementing system, and comprises a bidirectional charge-discharge module, a control unit, a human-computer interaction unit, a metering unit, a charge-discharge connection device, a direct current charging seat and a battery pack, wherein the bidirectional charge-discharge module is electrically connected with a mains supply three-phase power transmission line through an alternating current contactor KMA1, the bidirectional charge-discharge module is electrically connected with the control unit, and the human-computer interaction unit and the metering unit are electrically connected with the control unit. The use of peak-to-valley electricity prices can increase the user's revenue.)

1. The power supply method for the mobile intelligent power supply system of the electric automobile is characterized in that the power supply system comprises a bidirectional charge-discharge module, a control unit, a man-machine interaction unit, a metering unit, a charge-discharge connection device, a direct-current charging seat and a battery pack, wherein the bidirectional charge-discharge module is electrically connected with a three-phase power transmission line of a mains supply through an alternating-current contactor KMA1, the bidirectional charge-discharge module is electrically connected with the control unit, the man-machine interaction unit and the metering unit are electrically connected with the control unit, the bidirectional charge-discharge module is electrically connected with the charge-discharge connection device through a direct-current contactor KM1 and a direct-current contactor KM2 respectively, the bidirectional charge-discharge module is electrically connected with the battery pack through a direct-current contactor KM3 and a direct-current contactor KM4 respectively, and the metering unit is electrically connected between the bidirectional charge-discharge module and the direct-current contactor KM1 and the direct-current contactor KM2, the direct current charging seat is electrically connected between the direct current contactor KM4 and the direct current contactor KM3 and the battery pack through a direct current contactor KM7 and a direct current contactor KM8 respectively, one end of the direct current contactor KM7 and one end of the direct current contactor KM8 are electrically connected between the alternating current contactor KMA1 and the bidirectional charging and discharging module through a direct current contactor KM6 and a direct current contactor KM5 respectively, the charging and discharging connecting device can be connected with an electric automobile, and the direct current charging seat can be connected with a direct current charging pile;

the power supply method applied to the power supply system comprises the following steps:

when the commercial power three-phase power transmission line is used for charging the electric automobile, a user inputs an instruction through the human-computer interaction unit, the human-computer interaction unit transmits the instruction to the control unit, the control unit controls the alternating current contactor KMA1, the direct current contactor KM1 and the direct current contactor KM2 to be closed according to the user instruction, the control unit adjusts the bidirectional charging and discharging module to enter an AC/DC charging mode, after electric energy is input into the commercial power three-phase power transmission line, the alternating current is converted into direct current through the bidirectional charging and discharging module, the electric energy is transmitted to the electric automobile through the charging and discharging connecting device, and at the moment, the metering unit meters and outputs electric quantity to realize the function of charging the electric automobile through commercial power input;

when the battery pack is used for charging the electric automobile, a user inputs an instruction through the human-computer interaction unit, the human-computer interaction unit transmits the instruction to the control unit, the control unit controls the direct-current contactor KM5, the direct-current contactor KM6, the direct-current contactor KM1 and the direct-current contactor KM2 to be closed according to the user instruction, the control unit adjusts the bidirectional charging and discharging module to enter a DC/DC charging mode, after the battery pack outputs electric energy, the electric energy is conveyed to the charging and discharging connecting device through the charging and discharging connecting device and is conveyed to the electric automobile through the charging and discharging connecting device, and at the moment, the metering unit meters and outputs the electric energy to realize the function of charging the electric automobile through the battery pack.

2. The power supply method for the mobile intelligent power supply system of the electric vehicle as claimed in claim 1, wherein the bidirectional charging and discharging module comprises a MOS transistor V1, a MOS transistor V2, a MOS transistor V3, a MOS transistor V4, a MOS transistor V5, a MOS transistor V6, a MOS transistor V7, a MOS transistor V8, a MOS transistor V9, a MOS transistor V10, a MOS transistor V11, a MOS transistor V12, a MOS transistor V13, a MOS transistor 14, an inductor L1, an inductor L2, an inductor L3, an inductor L4, a capacitor C1, a capacitor C2, a capacitor C3, an electrolytic capacitor CD1, a current transformer CT1, a connector P1 and a connector P2, wherein the 4, 3 and 2 pins of the connector P1 are respectively electrically connected with the inductor L1, the inductor L3 and the 1 pin of the inductor L4, the MOS transistor V4 and the MOS transistor V4, the MOS transistor V4 and the MOS transistor V4 are electrically connected between the MOS transistor V4 and the MOS transistor V3628, the MOS transistor V369, the MOS transistor V and the MOS transistor V9, the transistor V12, the inductor L12, the inductor V466, the inductor L9, the inductor V466, the inductor L, the inductor V, the inductor L4, the inductor L9, the inductor L4, the inductor V9, the inductor V, the inductor L4, the inductor V9, the inductor V, the inductor L599, the inductor V9, the inductor V, and the inductor V, the inductor V9, the, The source of the MOS transistor V11 and the source of the MOS transistor V8 are electrically connected, the source of the MOS transistor V1 is electrically connected to the drain of the MOS transistor V13, the source of the MOS transistor V2 is electrically connected to the drain of the MOS transistor V9, the source of the MOS transistor V3 is electrically connected to the drain of the MOS transistor V10, the source of the MOS transistor V4 is electrically connected to the drain of the MOS transistor V11, the source of the MOS transistor V5 is electrically connected to the drain of the MOS transistor V8, the 2-pin of the inductor L1 is electrically connected between the source of the MOS transistor V3 and the drain of the MOS transistor V10, the 2-pin of the inductor L3 is electrically connected between the source of the MOS transistor V2 and the drain of the MOS transistor V9, the 2-pin of the inductor L4 is electrically connected between the source of the MOS transistor V1 and the drain of the MOS transistor V13, and the positive electrode of the MOS transistor V86 4 and the capacitor C1, the capacitor C2 and the negative electrode of the capacitor C1 are respectively and electrically connected between the source of the MOS transistor V10 and the source of the MOS transistor V11, the MOS transistor V6 and the drain of the MOS transistor V7 are electrically connected, the MOS transistor V12 and the source of the MOS transistor V14 are electrically connected, the source of the MOS transistor V6 is electrically connected to the drain of the MOS transistor V12, the source of the MOS transistor V7 is electrically connected to the drain of the MOS transistor V14, the positive and negative electrodes of the electrolytic capacitor CD1 are connected in parallel to the drain of the MOS transistor V7 and the source of the MOS transistor V14, the positive and negative electrodes of the electrolytic capacitor CD1 are respectively and electrically connected to the 1 pin and the 2 pin of the connector P2, the 1 pin of the current transformer CT1 is respectively and electrically connected between the source of the MOS transistor V11 and the drain of the MOS transistor V868453 through the inductor L2 and the capacitor C3, and the 2 pin of the current transformer CT 56 is electrically connected between the source of the MOS transistor V828453 and the drain of the MOS transistor V5, the 3 pins of the current transformer CT1 are electrically connected between the source of the MOS transistor V6 and the drain of the MOS transistor V12, and the 4 pins of the current transformer CT1 are electrically connected between the source of the MOS transistor V7 and the drain of the MOS transistor V14.

3. The power supplementing method for the electric vehicle mobile intelligent power supplementing system according to claim 1, wherein when the electric vehicle is used for discharging the national grid, a user inputs a command through the human-computer interaction unit, the human-computer interaction unit transmits the command to the control unit, the control unit controls the direct current contactor KM1, the direct current contactor KM2 and the alternating current contactor KMA1 to be closed according to the user command, the control unit regulates the bidirectional charging and discharging module to enter a DC/AC discharging mode, after the electric vehicle is discharged and is input through the charging and discharging connection device, the bidirectional charging and discharging module converts direct current into alternating current and transmits electric energy to a mains supply three-phase power transmission line, and finally the electric vehicle reaches the national grid, and the metering unit meters and outputs the electric energy to achieve the function of discharging the national grid by the electric vehicle.

4. The power supplementing method for the electric automobile mobile intelligent power supplementing system according to claim 1, wherein when the battery pack is used for discharging the national power grid, a user inputs an instruction through the man-machine interaction unit, the man-machine interaction unit transmits the instruction to the control unit, the control unit controls the direct current contactor KM3, the direct current contactor KM4 and the alternating current contactor KMA1 to be closed according to the user instruction, the control unit regulates the bidirectional charging and discharging module to enter a DC/AC discharging mode, after the battery pack is discharged, the bidirectional charging and discharging module converts direct current into alternating current and transmits electric energy to a mains supply three-phase power transmission line, and finally the electric energy reaches the national power grid, and the metering unit meters and outputs the electric energy to achieve the function that the battery pack discharges the national power grid.

5. The power supplementing method for the electric vehicle mobile intelligent power supplementing system according to claim 1, wherein when the commercial power three-phase power transmission line is used for charging the battery pack, a user inputs an instruction through the human-computer interaction unit, the human-computer interaction unit transmits the instruction to the control unit, the control unit controls the alternating current contactor KMA1, the direct current contactor KM3 and the direct current contactor KM4 to be closed according to the user instruction, the control unit regulates the bidirectional charging and discharging module to enter an AC/DC charging mode, after the commercial power three-phase power transmission line inputs electric energy, the bidirectional charging and discharging module converts the alternating current into direct current, and finally the electric energy is transmitted to the battery pack, and at the moment, the metering unit meters and outputs the electric energy so as to realize the charging function of the commercial power input on the battery pack.

6. The power supply method for the mobile intelligent power supply system of the electric automobile as claimed in claim 1, wherein the power supply method further comprises the step of inputting a command through the human-computer interaction unit by a user when the battery pack is charged by using the dc charging base, and transmitting the command to the control unit by the human-computer interaction unit, so that the control unit interacts with the external dc charging pile through the dc charging base according to the command of the user and controls the dc contactor KM7 and the dc contactor KM8 to be closed, and the dc charging pile can transmit electric energy to the battery pack through the dc charging base, so as to realize the function of charging the battery pack by the external dc charging pile.

Technical Field

The invention belongs to the technical field of electric automobile mobile intelligent power supply systems, and particularly relates to a power supply method for an electric automobile mobile intelligent power supply system.

Background

As a green vehicle with wide development prospect, the new energy automobile can be popularized extremely rapidly in the future, and the market prospect in the future is very huge. Along with new energy automobile's continuous increase, the demand of filling electric pile is also further expanding. The electric automobile mobile intelligent power supply system provides charging service for the electric automobile at any time and any place. Because its advantage such as portable, need not to occupy city land resource, nimble maneuver has compensatied a lot of short boards of fixed electric pile of filling just, can be applied to many scenes that fill electric pile and be difficult to popularize. For example, under the conditions of emergency rescue electricity supplement, peak charging period, parking space occupation of the charging pile and the like of the electric automobile, in addition, in many areas such as areas with insufficient charging pile construction, old communities and the like, the mobile electricity supplement car is also a good charging mode. Its intelligent realization uses this equipment can use the country net alternating current to charge electric automobile, can use the battery package of area itself to charge electric automobile, can use electric automobile/self battery package to net discharge to the country, also can use direct current to fill electric pile or commercial power to its self battery through this equipment benefit electricity, and multiple charge-discharge mode is optional realizes that the country is netted and electric automobile between multiple energy is mutual.

The value of removing the benefit electricity is really not just as the replenishment of fixed charging stake far away, lies in its important a ring in as electric automobile energy net in the future, will produce huge economic benefits. In recent years, the economic benefit is mainly that the charging is carried out in the valley period of the power grid, the discharging is carried out in the peak period of the electricity price, the charging cost is reduced, the energy is fully utilized, and the economic benefit can be generated; and secondly, the retired battery can be digested, the residual value of the battery is fully utilized, an energy storage closed network of the electric automobile is formed, and the value is higher.

The existing mobile power supply system has a single charging and discharging mode, can only charge the mobile power supply system from the forward direction of a power grid, and does not have the capability of reversely supplying power to the power grid by the mobile power supply system, and the electricity consumption peak of the power grid is usually in the daytime and in the evening, so that the situations of insufficient electric energy in the daytime and surplus waste at night can be caused.

Disclosure of Invention

The embodiment of the invention provides a power supplementing method for a mobile intelligent power supplementing system of an electric automobile, and aims to solve the problems that the existing mobile power supplementing system is single in charging and discharging mode, can only charge the mobile power supplementing system in a forward direction through a power grid, and does not have the capability of reversely supplying power to the power grid through the mobile power supplementing system.

In view of the above problems, the technical solution proposed by the present invention is:

the power supply method for the mobile intelligent power supply system of the electric automobile is characterized in that the power supply system comprises a bidirectional charge-discharge module, a control unit, a man-machine interaction unit, a metering unit, a charge-discharge connection device, a direct-current charging seat and a battery pack, wherein the bidirectional charge-discharge module is electrically connected with a three-phase power transmission line of a mains supply through an alternating-current contactor KMA1, the bidirectional charge-discharge module is electrically connected with the control unit, the man-machine interaction unit and the metering unit are electrically connected with the control unit, the bidirectional charge-discharge module is electrically connected with the charge-discharge connection device through a direct-current contactor KM1 and a direct-current contactor KM2 respectively, the bidirectional charge-discharge module is electrically connected with the battery pack through a direct-current contactor KM3 and a direct-current contactor KM4 respectively, and the metering unit is electrically connected between the bidirectional charge-discharge module and the direct-current contactor KM1 and the direct-current contactor KM2, the direct current charging seat is electrically connected between the direct current contactor KM4 and the direct current contactor KM3 and the battery pack through a direct current contactor KM7 and a direct current contactor KM8 respectively, one end of the direct current contactor KM7 and one end of the direct current contactor KM8 are electrically connected between the alternating current contactor KMA1 and the bidirectional charging and discharging module through a direct current contactor KM6 and a direct current contactor KM5 respectively, the charging and discharging connecting device can be connected with an electric automobile, and the direct current charging seat can be connected with a direct current charging pile;

the power supply method applied to the power supply system comprises the following steps:

when the commercial power three-phase power transmission line is used for charging the electric automobile, a user inputs an instruction through the human-computer interaction unit, the human-computer interaction unit transmits the instruction to the control unit, the control unit controls the alternating current contactor KMA1, the direct current contactor KM1 and the direct current contactor KM2 to be closed according to the user instruction, the control unit adjusts the bidirectional charging and discharging module to enter an AC/DC charging mode, after electric energy is input into the commercial power three-phase power transmission line, the alternating current is converted into direct current through the bidirectional charging and discharging module, the electric energy is transmitted to the electric automobile through the charging and discharging connecting device, and at the moment, the metering unit meters and outputs electric quantity to realize the function of charging the electric automobile through commercial power input;

when the battery pack is used for charging the electric automobile, a user inputs an instruction through the human-computer interaction unit, the human-computer interaction unit transmits the instruction to the control unit, the control unit controls the direct-current contactor KM5, the direct-current contactor KM6, the direct-current contactor KM1 and the direct-current contactor KM2 to be closed according to the user instruction, the control unit adjusts the bidirectional charging and discharging module to enter a DC/DC charging mode, after the battery pack outputs electric energy, the electric energy is conveyed to the charging and discharging connecting device through the charging and discharging connecting device and is conveyed to the electric automobile through the charging and discharging connecting device, and at the moment, the metering unit meters and outputs the electric energy to realize the function of charging the electric automobile through the battery pack.

As a preferred technical solution of the present invention, the bidirectional charging and discharging module includes a MOS transistor V1, a MOS transistor V2, a MOS transistor V3, a MOS transistor V4, a MOS transistor V5, a MOS transistor V6, a MOS transistor V7, a MOS transistor V8, a MOS transistor V9, a MOS transistor V10, a MOS transistor V11, a MOS transistor V12, a MOS transistor V13, a MOS transistor 14, an inductor L1, an inductor L2, an inductor L3, an inductor L4, a capacitor C1, a capacitor C2, a capacitor C3, an electrolytic capacitor CD1, a current transformer CT1, a connector P1 and a connector P2, wherein a pin 4, a pin 3 and a pin 2 of the connector P2 are electrically connected to a pin 1 of the inductor L2, the inductor L2 and a pin 1 of the inductor L2, the MOS transistor V2 and the drain of the MOS transistor V2 are electrically connected to each other, a source of the MOS transistor V1 is electrically connected to a drain of the MOS transistor V13, a source of the MOS transistor V2 is electrically connected to a drain of the MOS transistor V9, a source of the MOS transistor V3 is electrically connected to a drain of the MOS transistor V10, a source of the MOS transistor V4 is electrically connected to a drain of the MOS transistor V11, a source of the MOS transistor V5 is electrically connected to a drain of the MOS transistor V8, a 2-pin of the inductor L1 is electrically connected between the source of the MOS transistor V3 and the drain of the MOS transistor V10, a 2-pin of the inductor L3 is electrically connected between the source of the MOS transistor V2 and the drain of the MOS transistor V9, a 2-pin of the inductor L4 is electrically connected between the source of the MOS transistor V1 and the drain of the MOS transistor V13, a source of the capacitor C13 and a drain of the MOS transistor V13 are electrically connected to the drain of the MOS transistor V13, and a cathode of the capacitor C13 and a cathode of the MOS transistor V13 are electrically connected to the capacitor C13, the MOS tube V6 and the drain of the MOS tube V7 are electrically connected, the MOS tube V12 and the source of the MOS tube V14 are electrically connected, the source of the MOS tube V6 and the drain of the MOS tube V12 are electrically connected, the source of the MOS tube V7 and the drain of the MOS tube V14 are electrically connected, the positive and negative poles of the electrolytic capacitor CD1 are connected in parallel with the drain of the MOS tube V7 and the source of the MOS tube V14, the positive and negative poles of the electrolytic capacitor CD1 are respectively electrically connected with the pin 1 and the pin 2 of the connector P2, the pin 1 of the current CT1 is respectively and electrically connected between the source of the MOS tube V7 and the drain of the MOS tube V11 through the inductor L2 and the capacitor C3, the pin 2 of the current transformer CT1 is electrically connected between the source of the MOS tube V5 and the drain of the MOS tube V8, and the pin 3 of the current transformer 1 is electrically connected between the source of the MOS tube V6 and the drain of the MOS tube V12, the 4 pins of the current transformer CT1 are electrically connected between the source of the MOS transistor V7 and the drain of the MOS transistor V14.

As a preferred technical scheme of the invention, the power supply method further comprises the steps that when the electric vehicle discharges the national power grid, a user inputs an instruction through the human-computer interaction unit, the human-computer interaction unit transmits the instruction to the control unit, the control unit controls the direct current contactor KM1, the direct current contactor KM2 and the alternating current contactor KMA1 to be closed according to the instruction of the user, the control unit adjusts the bidirectional charging and discharging module to enter a DC/AC discharging mode, after the electric vehicle discharges and is input through the charging and discharging connection device, the bidirectional charging and discharging module converts direct current into alternating current and transmits electric energy to a three-phase power transmission line, and finally the electric energy reaches the national power grid, and the metering unit meters and outputs the electric energy to achieve the discharging function of the electric vehicle on the national power grid.

As a preferred technical scheme of the invention, the power supply method further comprises the steps that when the battery pack is used for discharging the national power grid, a user inputs an instruction through the human-computer interaction unit, the human-computer interaction unit transmits the instruction to the control unit, the control unit controls the direct current contactor KM3, the direct current contactor KM4 and the alternating current contactor KMA1 to be closed according to the instruction of the user, the control unit regulates the bidirectional charging and discharging module to enter a DC/AC discharging mode, the battery pack is discharged, then the direct current is converted into alternating current through the bidirectional charging and discharging module, electric energy is transmitted to a mains supply three-phase power transmission line, and finally the electric energy reaches the national power grid, and at the moment, the metering unit meters and outputs the electric energy, so that the battery pack discharges the national power grid.

As a preferred technical solution of the present invention, when the commercial power three-phase power line is used to charge the battery pack, a user inputs an instruction through the human-computer interaction unit, and the human-computer interaction unit transmits the instruction to the control unit, the control unit controls the AC contactor KMA1, the DC contactor KM3, and the DC contactor KM4 to be closed according to the user instruction, and the control unit adjusts the bidirectional charging and discharging module to enter an AC/DC charging mode, after the commercial power three-phase power line inputs electric energy, the bidirectional charging and discharging module converts the AC electric energy into the DC electric energy, and finally the electric energy is transmitted to the battery pack, and at this time, the metering unit meters and outputs the electric energy, so as to realize the commercial power input to charge the battery pack.

As a preferred technical solution of the present invention, the power supply method further includes that when the dc charging base is used to charge the battery pack, a user inputs an instruction through the human-computer interaction unit, and the human-computer interaction unit transmits the instruction to the control unit, so that the control unit interacts with an external dc charging pile through the dc charging base according to the instruction of the user, and controls the dc contactor KM7 and the dc contactor KM8 to be closed, and the dc charging pile can transmit electric energy to the battery pack through the dc charging base, so as to realize a function of charging the battery pack by the external dc charging pile.

Compared with the prior art, the invention has the beneficial effects that:

(1) the control unit provided by the invention can control the bidirectional charge-discharge module to perform corresponding charge-discharge according to the external connection equipment and the control instruction, and controls the AC contactor and the plurality of DC contactors to be switched on or switched off to realize different functions; the alternating current of the commercial power three-phase transmission line that can use the national grid charges to electric automobile, can use the battery package of self to charge to electric automobile, can use electric automobile self on-vehicle battery to discharge to the national grid, also can use direct current to fill electric pile and pass through the DC charging seat and mend the electricity to the battery package, and multiple charge-discharge mode can be selected and realized the multiple energy interaction between national grid and the electric automobile.

(2) According to the invention, the user of the electric automobile can start charging and discharging only in a place with a national standard plug without charging and discharging at a fixed charging pile place, so that the use convenience of the charging equipment is greatly improved, better charging and discharging experience is brought to the user, the surplus electric quantity of the electric automobile can be fed back to a national power grid, and the income of the user can be increased by utilizing the peak-valley electricity price.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

FIG. 1 is a schematic structural diagram of a power supplementing method for a mobile intelligent power supplementing system of an electric vehicle, which is disclosed by the invention;

fig. 2 to fig. 7 are schematic diagrams of operation of an embodiment 1 to an embodiment 6 of a power supplement method for an electric vehicle mobile intelligent power supplement system disclosed by the present invention;

fig. 8 is a schematic circuit diagram of a bidirectional charging and discharging module of the power supplementing method for the mobile intelligent power supplementing system of the electric vehicle disclosed by the invention.

Description of reference numerals: 1. a bidirectional charge and discharge module; 2. a control unit; 3. a human-computer interaction unit; 4. a metering unit; 5. a charge and discharge connection device; 6. a DC charging stand; 7. a battery pack.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the referenced apparatus or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Examples

Referring to the attached figure 1, the invention provides a technical scheme: the power supply method for the mobile intelligent power supply system of the electric automobile comprises a bidirectional charge-discharge module 1, a control unit 2, a man-machine interaction unit 3, a metering unit 4, a charge-discharge connecting device 5, a direct-current charging seat 6 and a battery pack 7, wherein the bidirectional charge-discharge module 1 is electrically connected with a mains supply three-phase power transmission line through an alternating-current contactor KMA1, the bidirectional charge-discharge module 1 is electrically connected with the control unit 2, the man-machine interaction unit 3 and the metering unit 4 are electrically connected with the control unit 2, the bidirectional charge-discharge module 1 is electrically connected with the charge-discharge connecting device 5 through a direct-current contactor KM1 and a direct-current contactor KM2, the bidirectional charge-discharge module 1 is electrically connected with the battery pack 7 through a direct-current contactor KM3 and a direct-current contactor KM4, the metering unit 4 is electrically connected between the bidirectional charge-discharge module 1 and a direct-current contactor KM1 and a direct-current contactor 5631, and the direct-current charging seat 6 is electrically connected with a direct-current contactor KM4 and a direct-current contactor KM8 respectively Between the contactor KM3 and the battery pack 7, one end of the direct current contactor KM7 and one end of the direct current contactor KM8 are electrically connected between the alternating current contactor KMA1 and the bidirectional charging and discharging module 1 through the direct current contactor KM6 and the direct current contactor KM5 respectively, the charging and discharging connecting device 5 can be connected with an electric automobile, and the direct current charging base 6 can be connected with the direct current charging pile.

In this embodiment, the control unit 2 includes an MCU control chip and a control circuit, the human-computer interaction unit 3 may be a touch screen or an external control device, the metering unit 4 includes a metering chip and a metering circuit, the charging and discharging connection device 5 includes a charging gun, a gun holder and a connection circuit, and the aforementioned chip, circuit and product components are all the prior art, and therefore, detailed description thereof is omitted here.

Referring to fig. 8, the bidirectional charging/discharging module 1 includes a MOS transistor V1, a MOS transistor V2, a MOS transistor V3, a MOS transistor V4, a MOS transistor V5, a MOS transistor V6, a MOS transistor V7, a MOS transistor V8, a MOS transistor V9, a MOS transistor V10, a MOS transistor V11, a MOS transistor V12, a MOS transistor 14, an inductor L12, a capacitor C12, an electrolytic capacitor CD 12, a current transformer 12, a connector P12 and a connector P12, a 4 pin, a 3 pin and a 2 pin of the connector P12 are electrically connected to a1 pin of the inductor L12, an inductor L12 and an inductor L12, a MOS transistor V12, a drain of the MOS transistor V12 and a drain of the MOS transistor V12 are electrically connected to a drain of the MOS transistor V12, the source of the MOS transistor V4 is electrically connected to the drain of the MOS transistor V11, the source of the MOS transistor V5 is electrically connected to the drain of the MOS transistor V8, the 2-pin of the inductor L8 is electrically connected between the source of the MOS transistor V8 and the drain of the MOS transistor V8, the drain of the MOS transistor V8 and the drain of the MOS transistor V8 are electrically connected to the positive pole of the capacitor C8 and the positive pole of the capacitor C8, the source of the MOS transistor V8 and the negative pole of the capacitor C8 are electrically connected between the source of the MOS transistor V8, the drain of the MOS transistor V8 and the drain of the MOS transistor V8 are electrically connected in parallel, the drain of the MOS transistor V8 and the anode and the drain of the MOS transistor V8 are electrically connected to the drain of the MOS transistor V8. The positive electrode and the negative electrode of the electrolytic capacitor CD1 are respectively and electrically connected with a pin 1 and a pin 2 of a connector P2, a pin 1 of a current transformer CT1 is respectively and electrically connected between the source of the MOS tube and the drain of the MOS tube V11 through an inductor L2 and a capacitor C3, a pin 2 of a current transformer CT1 is electrically connected between the source of the MOS tube V5 and the drain of the MOS tube V8, a pin 3 of a current transformer CT1 is electrically connected between the source of the MOS tube V6 and the drain of the MOS tube V12, and a pin 4 of the current transformer CT1 is electrically connected between the source of the MOS tube V7 and the drain of the MOS tube V14.

In this embodiment, the bidirectional charging and discharging module 1 adjusts the AC/DC, DC/DC or DC/AC charging module according to the instruction of the control unit 2, and performs AC to DC conversion, DC to DC conversion or DC to AC conversion according to the following working modes of embodiments 1 to 6, thereby implementing a power supply system to complete various power supply modes.

Example 1

When the electric automobile is charged by using the mains supply three-phase power transmission line, a user inputs an instruction through the human-computer interaction unit 3, the human-computer interaction unit 3 transmits the instruction to the control unit 2, the control unit 2 controls the alternating current contactor KMA1, the direct current contactor KM1 and the direct current contactor KM2 to be closed according to the user instruction, the control unit 2 adjusts the bidirectional charging and discharging module 1 to enter an AC/DC charging mode, after electric energy is input by the mains supply three-phase power transmission line, the alternating current is converted into the direct current through the bidirectional charging and discharging module 1, the electric energy is conveyed to the electric automobile through the charging and discharging connecting device 5, and at the moment, the metering unit 4 meters and outputs the electric energy to realize the function of charging the electric automobile by mains supply input.

Example 2

When the battery pack 7 is used for charging the electric automobile, a user inputs an instruction through the human-computer interaction unit 3, the human-computer interaction unit 3 transmits the instruction to the control unit 2, the control unit 2 controls the direct-current contactor KM5, the direct-current contactor KM6, the direct-current contactor KM1 and the direct-current contactor KM2 to be closed according to the user instruction, the control unit 2 adjusts the bidirectional charging and discharging module 1 to enter a DC/DC charging mode, after the battery pack 7 outputs electric energy, the electric energy is transmitted to the charging and discharging connecting device 5 through the charging and discharging connecting device 5, and is transmitted to the electric automobile through the charging and discharging connecting device 5, at the moment, the metering unit 4 meters and outputs the electric energy, so that the battery pack 7 can charge the electric automobile.

Example 3

When the electric automobile is used for discharging a national power grid, a user inputs an instruction through the human-computer interaction unit 3, the human-computer interaction unit 3 transmits the instruction to the control unit 2, the control unit 2 controls the direct-current contactor KM1, the direct-current contactor KM2 and the alternating-current contactor KMA1 to close the cavity system unit 2 according to the user instruction and adjusts the bidirectional charging and discharging module 1 to enter a DC/AC discharging mode, after the electric automobile is discharged and is input through the charging and discharging connection device 5, the bidirectional charging and discharging module 1 converts direct current into alternating current and transmits electric energy to a mains supply three-phase power transmission line, the electric energy finally reaches the national power grid, and the metering unit 4 meters and outputs electric energy at the moment so as to achieve the function of discharging the electric automobile to the national power grid.

Example 4

When the battery pack 7 is used for discharging a national power grid, a user inputs an instruction through the human-computer interaction unit 3, the human-computer interaction unit 3 transmits the instruction to the control unit 2, the control unit 2 controls the direct-current contactor KM3, the direct-current contactor KM4 and the alternating-current contactor KMA1 to close the cavity system unit 2 and adjust the bidirectional charging and discharging module 1 to enter a DC/AC discharging mode according to the instruction of the user, after the battery pack 7 is discharged, direct current is converted into alternating current through the bidirectional charging and discharging module 1, electric energy is transmitted to a mains supply three-phase power transmission line and finally reaches the national power grid, and at the moment, the metering unit 4 meters and outputs electric quantity to achieve the function that the battery pack 7 discharges the national power grid.

Example 5

When the commercial power three-phase power transmission line is used for charging the battery pack 7, a user inputs instructions through the human-computer interaction unit 3, the human-computer interaction unit 3 transmits the instructions to the control unit 2, the control unit 2 controls the alternating current contactor KMA1, the direct current contactor KM3 and the direct current contactor KM4 to be closed according to the user instructions, the control unit 2 adjusts the bidirectional charging and discharging module 1 to enter an AC/DC charging mode, after electric energy is input through the commercial power three-phase power transmission line, the alternating current is converted into the direct current through the bidirectional charging and discharging module 1, the electric energy is finally transmitted to the battery pack 7, and at the moment, the metering unit 4 meters and outputs the electric energy to realize the function of charging the battery pack 7 through commercial power input.

Example 6

When the direct-current charging seat 6 is used for charging the battery pack 7, a user inputs instructions through the human-computer interaction unit 3, the human-computer interaction unit 3 transmits instructions to the control unit 2, then the control unit 2 interacts with the external direct-current charging pile through the direct-current charging seat 6 according to the instructions of the user, the direct-current contactor KM7 and the direct-current contactor KM8 are controlled to be closed, the direct-current charging pile can convey electric energy to the battery pack 7 through the direct-current charging seat 6, and the external direct-current charging pile can charge the battery pack 7.

One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:

(1) the control unit provided by the invention can control the bidirectional charge-discharge module to perform corresponding charge-discharge according to the external connection equipment and the control instruction, and controls the AC contactor and the plurality of DC contactors to be switched on or switched off to realize different functions; the alternating current of the commercial power three-phase transmission line that can use the national grid charges to electric automobile, can use the battery package of self to charge to electric automobile, can use electric automobile self on-vehicle battery to discharge to the national grid, also can use direct current to fill electric pile and pass through the DC charging seat and mend the electricity to the battery package, and multiple charge-discharge mode can be selected and realized the multiple energy interaction between national grid and the electric automobile.

(2) According to the invention, the user of the electric automobile can start charging and discharging only in a place with a national standard plug without charging and discharging at a fixed charging pile place, so that the use convenience of the charging equipment is greatly improved, better charging and discharging experience is brought to the user, the surplus electric quantity of the electric automobile can be fed back to a national power grid, and the income of the user can be increased by utilizing the peak-valley electricity price.

It should be noted that the model specifications of MOS transistor V1, MOS transistor V2, MOS transistor V3, MOS transistor V4, MOS transistor V5, MOS transistor V6, MOS transistor V7, MOS transistor V8, MOS transistor V9, MOS transistor V10, MOS transistor V11, MOS transistor V12, MOS transistor V13, MOS transistor 14, inductor L1, inductor L2, inductor L3, inductor L4, capacitor C1, capacitor C2, capacitor C3, electrolytic capacitor CD1, current transformer CT1, connector P1, and connector P2 need to be determined according to the actual specifications of the device, and the specific model selection calculation method adopts the prior art in the field, and therefore details are omitted.

The power supply and the principle of MOS transistor V1, MOS transistor V2, MOS transistor V3, MOS transistor V4, MOS transistor V5, MOS transistor V6, MOS transistor V7, MOS transistor V8, MOS transistor V9, MOS transistor V10, MOS transistor V11, MOS transistor V12, MOS transistor V13, MOS transistor 14, inductor L1, inductor L2, inductor L3, inductor L4, capacitor C1, capacitor C2, capacitor C3, electrolytic capacitor CD1, current transformer CT1, connector P1 and connector P2 are clear to those skilled in the art, and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.